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a0d0e21e 1/* sv.c
79072805 2 *
3818b22b 3 * Copyright (c) 1991-2000, Larry Wall
79072805
LW		 4 *
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
7 *
a0d0e21e
LW		 8 */
9
10/*
11 * "I wonder what the Entish is for 'yes' and 'no'," he thought.
79072805
LW		 12 */
13
14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_SV_C
79072805 16#include "perl.h"
79072805 17
51371543 18#define FCALL *f
6fc92669 19#define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) sv_force_normal(sv)
2c5424a7 20
51371543
GS		 21static void do_report_used(pTHXo_ SV *sv);
22static void do_clean_objs(pTHXo_ SV *sv);
23#ifndef DISABLE_DESTRUCTOR_KLUDGE
24static void do_clean_named_objs(pTHXo_ SV *sv);
25#endif
26static void do_clean_all(pTHXo_ SV *sv);
27
4561caa4
CS		 28/*
29 * "A time to plant, and a time to uproot what was planted..."
30 */
31
053fc874
GS		 32#define plant_SV(p) \
33 STMT_START { \
34 SvANY(p) = (void *)PL_sv_root; \
35 SvFLAGS(p) = SVTYPEMASK; \
36 PL_sv_root = (p); \
37 --PL_sv_count; \
38 } STMT_END
a0d0e21e 39
fba3b22e 40/* sv_mutex must be held while calling uproot_SV() */
053fc874
GS		 41#define uproot_SV(p) \
42 STMT_START { \
43 (p) = PL_sv_root; \
44 PL_sv_root = (SV*)SvANY(p); \
45 ++PL_sv_count; \
46 } STMT_END
47
48#define new_SV(p) \
49 STMT_START { \
50 LOCK_SV_MUTEX; \
51 if (PL_sv_root) \
52 uproot_SV(p); \
53 else \
54 (p) = more_sv(); \
55 UNLOCK_SV_MUTEX; \
56 SvANY(p) = 0; \
57 SvREFCNT(p) = 1; \
58 SvFLAGS(p) = 0; \
59 } STMT_END
463ee0b2 60
a0d0e21e 61#ifdef DEBUGGING
4561caa4 62
053fc874
GS		 63#define del_SV(p) \
64 STMT_START { \
65 LOCK_SV_MUTEX; \
66 if (PL_debug & 32768) \
67 del_sv(p); \
68 else \
69 plant_SV(p); \
70 UNLOCK_SV_MUTEX; \
71 } STMT_END
a0d0e21e 72
76e3520e 73STATIC void
cea2e8a9 74S_del_sv(pTHX_ SV *p)
463ee0b2 75{
3280af22 76 if (PL_debug & 32768) {
4633a7c4 77 SV* sva;
a0d0e21e
LW		 78 SV* sv;
79 SV* svend;
80 int ok = 0;
3280af22 81 for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
4633a7c4
LW		 82 sv = sva + 1;
83 svend = &sva[SvREFCNT(sva)];
a0d0e21e
LW		 84 if (p >= sv && p < svend)
85 ok = 1;
86 }
87 if (!ok) {
0453d815
PM		 88 if (ckWARN_d(WARN_INTERNAL))
89 Perl_warner(aTHX_ WARN_INTERNAL,
1d7c1841
GS		 90 "Attempt to free non-arena SV: 0x%"UVxf,
91 PTR2UV(p));
a0d0e21e
LW		 92 return;
93 }
94 }
4561caa4 95 plant_SV(p);
463ee0b2 96}
a0d0e21e 97
4561caa4
CS		 98#else /* ! DEBUGGING */
99
100#define del_SV(p) plant_SV(p)
101
102#endif /* DEBUGGING */
463ee0b2 103
4633a7c4 104void
864dbfa3 105Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags)
463ee0b2 106{
4633a7c4 107 SV* sva = (SV*)ptr;
463ee0b2
LW		 108 register SV* sv;
109 register SV* svend;
14dd3ad8 110 Zero(ptr, size, char);
4633a7c4
LW		 111
112 /* The first SV in an arena isn't an SV. */
3280af22 113 SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */
4633a7c4
LW		 114 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
115 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
116
3280af22
NIS		 117 PL_sv_arenaroot = sva;
118 PL_sv_root = sva + 1;
4633a7c4
LW		 119
120 svend = &sva[SvREFCNT(sva) - 1];
121 sv = sva + 1;
463ee0b2 122 while (sv < svend) {
a0d0e21e 123 SvANY(sv) = (void *)(SV*)(sv + 1);
8990e307 124 SvFLAGS(sv) = SVTYPEMASK;
463ee0b2
LW		 125 sv++;
126 }
127 SvANY(sv) = 0;
4633a7c4
LW		 128 SvFLAGS(sv) = SVTYPEMASK;
129}
130
fba3b22e 131/* sv_mutex must be held while calling more_sv() */
76e3520e 132STATIC SV*
cea2e8a9 133S_more_sv(pTHX)
4633a7c4 134{
4561caa4
CS		 135 register SV* sv;
136
3280af22
NIS		 137 if (PL_nice_chunk) {
138 sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0);
139 PL_nice_chunk = Nullch;
c07a80fd 140 }
1edc1566 141 else {
142 char *chunk; /* must use New here to match call to */
143 New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */
144 sv_add_arena(chunk, 1008, 0);
145 }
4561caa4
CS		 146 uproot_SV(sv);
147 return sv;
463ee0b2
LW		 148}
149
76e3520e 150STATIC void
cea2e8a9 151S_visit(pTHX_ SVFUNC_t f)
8990e307 152{
4633a7c4 153 SV* sva;
8990e307
LW		 154 SV* sv;
155 register SV* svend;
156
3280af22 157 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
4633a7c4 158 svend = &sva[SvREFCNT(sva)];
4561caa4
CS		 159 for (sv = sva + 1; sv < svend; ++sv) {
160 if (SvTYPE(sv) != SVTYPEMASK)
51371543 161 (FCALL)(aTHXo_ sv);
8990e307
LW		 162 }
163 }
164}
165
166void
864dbfa3 167Perl_sv_report_used(pTHX)
4561caa4 168{
0b94c7bb 169 visit(do_report_used);
4561caa4
CS		 170}
171
4561caa4 172void
864dbfa3 173Perl_sv_clean_objs(pTHX)
4561caa4 174{
3280af22 175 PL_in_clean_objs = TRUE;
0b94c7bb 176 visit(do_clean_objs);
4561caa4 177#ifndef DISABLE_DESTRUCTOR_KLUDGE
2d0f3c12 178 /* some barnacles may yet remain, clinging to typeglobs */
0b94c7bb 179 visit(do_clean_named_objs);
4561caa4 180#endif
3280af22 181 PL_in_clean_objs = FALSE;
4561caa4
CS		 182}
183
8990e307 184void
864dbfa3 185Perl_sv_clean_all(pTHX)
8990e307 186{
3280af22 187 PL_in_clean_all = TRUE;
0b94c7bb 188 visit(do_clean_all);
3280af22 189 PL_in_clean_all = FALSE;
8990e307 190}
463ee0b2 191
4633a7c4 192void
864dbfa3 193Perl_sv_free_arenas(pTHX)
4633a7c4
LW		 194{
195 SV* sva;
196 SV* svanext;
612f20c3 197 XPV *arena, *arenanext;
4633a7c4
LW		 198
199 /* Free arenas here, but be careful about fake ones. (We assume
200 contiguity of the fake ones with the corresponding real ones.) */
201
3280af22 202 for (sva = PL_sv_arenaroot; sva; sva = svanext) {
4633a7c4
LW		 203 svanext = (SV*) SvANY(sva);
204 while (svanext && SvFAKE(svanext))
205 svanext = (SV*) SvANY(svanext);
206
207 if (!SvFAKE(sva))
1edc1566 208 Safefree((void *)sva);
4633a7c4 209 }
5f05dabc 210
612f20c3
GS		 211 for (arena = PL_xiv_arenaroot; arena; arena = arenanext) {
212 arenanext = (XPV*)arena->xpv_pv;
213 Safefree(arena);
214 }
215 PL_xiv_arenaroot = 0;
216
217 for (arena = PL_xnv_arenaroot; arena; arena = arenanext) {
218 arenanext = (XPV*)arena->xpv_pv;
219 Safefree(arena);
220 }
221 PL_xnv_arenaroot = 0;
222
223 for (arena = PL_xrv_arenaroot; arena; arena = arenanext) {
224 arenanext = (XPV*)arena->xpv_pv;
225 Safefree(arena);
226 }
227 PL_xrv_arenaroot = 0;
228
229 for (arena = PL_xpv_arenaroot; arena; arena = arenanext) {
230 arenanext = (XPV*)arena->xpv_pv;
231 Safefree(arena);
232 }
233 PL_xpv_arenaroot = 0;
234
235 for (arena = (XPV*)PL_xpviv_arenaroot; arena; arena = arenanext) {
236 arenanext = (XPV*)arena->xpv_pv;
237 Safefree(arena);
238 }
239 PL_xpviv_arenaroot = 0;
240
241 for (arena = (XPV*)PL_xpvnv_arenaroot; arena; arena = arenanext) {
242 arenanext = (XPV*)arena->xpv_pv;
243 Safefree(arena);
244 }
245 PL_xpvnv_arenaroot = 0;
246
247 for (arena = (XPV*)PL_xpvcv_arenaroot; arena; arena = arenanext) {
248 arenanext = (XPV*)arena->xpv_pv;
249 Safefree(arena);
250 }
251 PL_xpvcv_arenaroot = 0;
252
253 for (arena = (XPV*)PL_xpvav_arenaroot; arena; arena = arenanext) {
254 arenanext = (XPV*)arena->xpv_pv;
255 Safefree(arena);
256 }
257 PL_xpvav_arenaroot = 0;
258
259 for (arena = (XPV*)PL_xpvhv_arenaroot; arena; arena = arenanext) {
260 arenanext = (XPV*)arena->xpv_pv;
261 Safefree(arena);
262 }
263 PL_xpvhv_arenaroot = 0;
264
265 for (arena = (XPV*)PL_xpvmg_arenaroot; arena; arena = arenanext) {
266 arenanext = (XPV*)arena->xpv_pv;
267 Safefree(arena);
268 }
269 PL_xpvmg_arenaroot = 0;
270
271 for (arena = (XPV*)PL_xpvlv_arenaroot; arena; arena = arenanext) {
272 arenanext = (XPV*)arena->xpv_pv;
273 Safefree(arena);
274 }
275 PL_xpvlv_arenaroot = 0;
276
277 for (arena = (XPV*)PL_xpvbm_arenaroot; arena; arena = arenanext) {
278 arenanext = (XPV*)arena->xpv_pv;
279 Safefree(arena);
280 }
281 PL_xpvbm_arenaroot = 0;
282
283 for (arena = (XPV*)PL_he_arenaroot; arena; arena = arenanext) {
284 arenanext = (XPV*)arena->xpv_pv;
285 Safefree(arena);
286 }
287 PL_he_arenaroot = 0;
288
3280af22
NIS		 289 if (PL_nice_chunk)
290 Safefree(PL_nice_chunk);
291 PL_nice_chunk = Nullch;
292 PL_nice_chunk_size = 0;
293 PL_sv_arenaroot = 0;
294 PL_sv_root = 0;
4633a7c4
LW		 295}
296
1d7c1841
GS		 297void
298Perl_report_uninit(pTHX)
299{
300 if (PL_op)
301 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit,
302 " in ", PL_op_desc[PL_op->op_type]);
303 else
304 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit, "", "");
305}
306
76e3520e 307STATIC XPVIV*
cea2e8a9 308S_new_xiv(pTHX)
463ee0b2 309{
ea7c11a3 310 IV* xiv;
cbe51380
GS		 311 LOCK_SV_MUTEX;
312 if (!PL_xiv_root)
313 more_xiv();
314 xiv = PL_xiv_root;
315 /*
316 * See comment in more_xiv() -- RAM.
317 */
318 PL_xiv_root = *(IV**)xiv;
319 UNLOCK_SV_MUTEX;
320 return (XPVIV*)((char*)xiv - STRUCT_OFFSET(XPVIV, xiv_iv));
463ee0b2
LW		 321}
322
76e3520e 323STATIC void
cea2e8a9 324S_del_xiv(pTHX_ XPVIV *p)
463ee0b2 325{
23e6a22f 326 IV* xiv = (IV*)((char*)(p) + STRUCT_OFFSET(XPVIV, xiv_iv));
cbe51380 327 LOCK_SV_MUTEX;
3280af22
NIS		 328 *(IV**)xiv = PL_xiv_root;
329 PL_xiv_root = xiv;
cbe51380 330 UNLOCK_SV_MUTEX;
463ee0b2
LW		 331}
332
cbe51380 333STATIC void
cea2e8a9 334S_more_xiv(pTHX)
463ee0b2 335{
ea7c11a3
SM		 336 register IV* xiv;
337 register IV* xivend;
8c52afec
IZ		 338 XPV* ptr;
339 New(705, ptr, 1008/sizeof(XPV), XPV);
3280af22
NIS		 340 ptr->xpv_pv = (char*)PL_xiv_arenaroot; /* linked list of xiv arenas */
341 PL_xiv_arenaroot = ptr; /* to keep Purify happy */
a0d0e21e 342
ea7c11a3
SM		 343 xiv = (IV*) ptr;
344 xivend = &xiv[1008 / sizeof(IV) - 1];
345 xiv += (sizeof(XPV) - 1) / sizeof(IV) + 1; /* fudge by size of XPV */
3280af22 346 PL_xiv_root = xiv;
463ee0b2 347 while (xiv < xivend) {
ea7c11a3 348 *(IV**)xiv = (IV *)(xiv + 1);
463ee0b2
LW		 349 xiv++;
350 }
ea7c11a3 351 *(IV**)xiv = 0;
463ee0b2
LW		 352}
353
76e3520e 354STATIC XPVNV*
cea2e8a9 355S_new_xnv(pTHX)
463ee0b2 356{
65202027 357 NV* xnv;
cbe51380
GS		 358 LOCK_SV_MUTEX;
359 if (!PL_xnv_root)
360 more_xnv();
361 xnv = PL_xnv_root;
65202027 362 PL_xnv_root = *(NV**)xnv;
cbe51380
GS		 363 UNLOCK_SV_MUTEX;
364 return (XPVNV*)((char*)xnv - STRUCT_OFFSET(XPVNV, xnv_nv));
463ee0b2
LW		 365}
366
76e3520e 367STATIC void
cea2e8a9 368S_del_xnv(pTHX_ XPVNV *p)
463ee0b2 369{
65202027 370 NV* xnv = (NV*)((char*)(p) + STRUCT_OFFSET(XPVNV, xnv_nv));
cbe51380 371 LOCK_SV_MUTEX;
65202027 372 *(NV**)xnv = PL_xnv_root;
3280af22 373 PL_xnv_root = xnv;
cbe51380 374 UNLOCK_SV_MUTEX;
463ee0b2
LW		 375}
376
cbe51380 377STATIC void
cea2e8a9 378S_more_xnv(pTHX)
463ee0b2 379{
65202027
DS		 380 register NV* xnv;
381 register NV* xnvend;
612f20c3
GS		 382 XPV *ptr;
383 New(711, ptr, 1008/sizeof(XPV), XPV);
384 ptr->xpv_pv = (char*)PL_xnv_arenaroot;
385 PL_xnv_arenaroot = ptr;
386
387 xnv = (NV*) ptr;
65202027
DS		 388 xnvend = &xnv[1008 / sizeof(NV) - 1];
389 xnv += (sizeof(XPVIV) - 1) / sizeof(NV) + 1; /* fudge by sizeof XPVIV */
3280af22 390 PL_xnv_root = xnv;
463ee0b2 391 while (xnv < xnvend) {
65202027 392 *(NV**)xnv = (NV*)(xnv + 1);
463ee0b2
LW		 393 xnv++;
394 }
65202027 395 *(NV**)xnv = 0;
463ee0b2
LW		 396}
397
76e3520e 398STATIC XRV*
cea2e8a9 399S_new_xrv(pTHX)
ed6116ce
LW		 400{
401 XRV* xrv;
cbe51380
GS		 402 LOCK_SV_MUTEX;
403 if (!PL_xrv_root)
404 more_xrv();
405 xrv = PL_xrv_root;
406 PL_xrv_root = (XRV*)xrv->xrv_rv;
407 UNLOCK_SV_MUTEX;
408 return xrv;
ed6116ce
LW		 409}
410
76e3520e 411STATIC void
cea2e8a9 412S_del_xrv(pTHX_ XRV *p)
ed6116ce 413{
cbe51380 414 LOCK_SV_MUTEX;
3280af22
NIS		 415 p->xrv_rv = (SV*)PL_xrv_root;
416 PL_xrv_root = p;
cbe51380 417 UNLOCK_SV_MUTEX;
ed6116ce
LW		 418}
419
cbe51380 420STATIC void
cea2e8a9 421S_more_xrv(pTHX)
ed6116ce 422{
ed6116ce
LW		 423 register XRV* xrv;
424 register XRV* xrvend;
612f20c3
GS		 425 XPV *ptr;
426 New(712, ptr, 1008/sizeof(XPV), XPV);
427 ptr->xpv_pv = (char*)PL_xrv_arenaroot;
428 PL_xrv_arenaroot = ptr;
429
430 xrv = (XRV*) ptr;
ed6116ce 431 xrvend = &xrv[1008 / sizeof(XRV) - 1];
612f20c3
GS		 432 xrv += (sizeof(XPV) - 1) / sizeof(XRV) + 1;
433 PL_xrv_root = xrv;
ed6116ce
LW		 434 while (xrv < xrvend) {
435 xrv->xrv_rv = (SV*)(xrv + 1);
436 xrv++;
437 }
438 xrv->xrv_rv = 0;
ed6116ce
LW		 439}
440
76e3520e 441STATIC XPV*
cea2e8a9 442S_new_xpv(pTHX)
463ee0b2
LW		 443{
444 XPV* xpv;
cbe51380
GS		 445 LOCK_SV_MUTEX;
446 if (!PL_xpv_root)
447 more_xpv();
448 xpv = PL_xpv_root;
449 PL_xpv_root = (XPV*)xpv->xpv_pv;
450 UNLOCK_SV_MUTEX;
451 return xpv;
463ee0b2
LW		 452}
453
76e3520e 454STATIC void
cea2e8a9 455S_del_xpv(pTHX_ XPV *p)
463ee0b2 456{
cbe51380 457 LOCK_SV_MUTEX;
3280af22
NIS		 458 p->xpv_pv = (char*)PL_xpv_root;
459 PL_xpv_root = p;
cbe51380 460 UNLOCK_SV_MUTEX;
463ee0b2
LW		 461}
462
cbe51380 463STATIC void
cea2e8a9 464S_more_xpv(pTHX)
463ee0b2 465{
463ee0b2
LW		 466 register XPV* xpv;
467 register XPV* xpvend;
612f20c3
GS		 468 New(713, xpv, 1008/sizeof(XPV), XPV);
469 xpv->xpv_pv = (char*)PL_xpv_arenaroot;
470 PL_xpv_arenaroot = xpv;
471
463ee0b2 472 xpvend = &xpv[1008 / sizeof(XPV) - 1];
612f20c3 473 PL_xpv_root = ++xpv;
463ee0b2
LW		 474 while (xpv < xpvend) {
475 xpv->xpv_pv = (char*)(xpv + 1);
476 xpv++;
477 }
478 xpv->xpv_pv = 0;
463ee0b2
LW		 479}
480
932e9ff9
VB		 481STATIC XPVIV*
482S_new_xpviv(pTHX)
483{
484 XPVIV* xpviv;
485 LOCK_SV_MUTEX;
486 if (!PL_xpviv_root)
487 more_xpviv();
488 xpviv = PL_xpviv_root;
489 PL_xpviv_root = (XPVIV*)xpviv->xpv_pv;
490 UNLOCK_SV_MUTEX;
491 return xpviv;
492}
493
494STATIC void
495S_del_xpviv(pTHX_ XPVIV *p)
496{
497 LOCK_SV_MUTEX;
498 p->xpv_pv = (char*)PL_xpviv_root;
499 PL_xpviv_root = p;
500 UNLOCK_SV_MUTEX;
501}
502
932e9ff9
VB		 503STATIC void
504S_more_xpviv(pTHX)
505{
506 register XPVIV* xpviv;
507 register XPVIV* xpvivend;
612f20c3
GS		 508 New(714, xpviv, 1008/sizeof(XPVIV), XPVIV);
509 xpviv->xpv_pv = (char*)PL_xpviv_arenaroot;
510 PL_xpviv_arenaroot = xpviv;
511
932e9ff9 512 xpvivend = &xpviv[1008 / sizeof(XPVIV) - 1];
612f20c3 513 PL_xpviv_root = ++xpviv;
932e9ff9
VB		 514 while (xpviv < xpvivend) {
515 xpviv->xpv_pv = (char*)(xpviv + 1);
516 xpviv++;
517 }
518 xpviv->xpv_pv = 0;
519}
520
932e9ff9
VB		 521STATIC XPVNV*
522S_new_xpvnv(pTHX)
523{
524 XPVNV* xpvnv;
525 LOCK_SV_MUTEX;
526 if (!PL_xpvnv_root)
527 more_xpvnv();
528 xpvnv = PL_xpvnv_root;
529 PL_xpvnv_root = (XPVNV*)xpvnv->xpv_pv;
530 UNLOCK_SV_MUTEX;
531 return xpvnv;
532}
533
534STATIC void
535S_del_xpvnv(pTHX_ XPVNV *p)
536{
537 LOCK_SV_MUTEX;
538 p->xpv_pv = (char*)PL_xpvnv_root;
539 PL_xpvnv_root = p;
540 UNLOCK_SV_MUTEX;
541}
542
932e9ff9
VB		 543STATIC void
544S_more_xpvnv(pTHX)
545{
546 register XPVNV* xpvnv;
547 register XPVNV* xpvnvend;
612f20c3
GS		 548 New(715, xpvnv, 1008/sizeof(XPVNV), XPVNV);
549 xpvnv->xpv_pv = (char*)PL_xpvnv_arenaroot;
550 PL_xpvnv_arenaroot = xpvnv;
551
932e9ff9 552 xpvnvend = &xpvnv[1008 / sizeof(XPVNV) - 1];
612f20c3 553 PL_xpvnv_root = ++xpvnv;
932e9ff9
VB		 554 while (xpvnv < xpvnvend) {
555 xpvnv->xpv_pv = (char*)(xpvnv + 1);
556 xpvnv++;
557 }
558 xpvnv->xpv_pv = 0;
559}
560
932e9ff9
VB		 561STATIC XPVCV*
562S_new_xpvcv(pTHX)
563{
564 XPVCV* xpvcv;
565 LOCK_SV_MUTEX;
566 if (!PL_xpvcv_root)
567 more_xpvcv();
568 xpvcv = PL_xpvcv_root;
569 PL_xpvcv_root = (XPVCV*)xpvcv->xpv_pv;
570 UNLOCK_SV_MUTEX;
571 return xpvcv;
572}
573
574STATIC void
575S_del_xpvcv(pTHX_ XPVCV *p)
576{
577 LOCK_SV_MUTEX;
578 p->xpv_pv = (char*)PL_xpvcv_root;
579 PL_xpvcv_root = p;
580 UNLOCK_SV_MUTEX;
581}
582
932e9ff9
VB		 583STATIC void
584S_more_xpvcv(pTHX)
585{
586 register XPVCV* xpvcv;
587 register XPVCV* xpvcvend;
612f20c3
GS		 588 New(716, xpvcv, 1008/sizeof(XPVCV), XPVCV);
589 xpvcv->xpv_pv = (char*)PL_xpvcv_arenaroot;
590 PL_xpvcv_arenaroot = xpvcv;
591
932e9ff9 592 xpvcvend = &xpvcv[1008 / sizeof(XPVCV) - 1];
612f20c3 593 PL_xpvcv_root = ++xpvcv;
932e9ff9
VB		 594 while (xpvcv < xpvcvend) {
595 xpvcv->xpv_pv = (char*)(xpvcv + 1);
596 xpvcv++;
597 }
598 xpvcv->xpv_pv = 0;
599}
600
932e9ff9
VB		 601STATIC XPVAV*
602S_new_xpvav(pTHX)
603{
604 XPVAV* xpvav;
605 LOCK_SV_MUTEX;
606 if (!PL_xpvav_root)
607 more_xpvav();
608 xpvav = PL_xpvav_root;
609 PL_xpvav_root = (XPVAV*)xpvav->xav_array;
610 UNLOCK_SV_MUTEX;
611 return xpvav;
612}
613
614STATIC void
615S_del_xpvav(pTHX_ XPVAV *p)
616{
617 LOCK_SV_MUTEX;
618 p->xav_array = (char*)PL_xpvav_root;
619 PL_xpvav_root = p;
620 UNLOCK_SV_MUTEX;
621}
622
932e9ff9
VB		 623STATIC void
624S_more_xpvav(pTHX)
625{
626 register XPVAV* xpvav;
627 register XPVAV* xpvavend;
612f20c3
GS		 628 New(717, xpvav, 1008/sizeof(XPVAV), XPVAV);
629 xpvav->xav_array = (char*)PL_xpvav_arenaroot;
630 PL_xpvav_arenaroot = xpvav;
631
932e9ff9 632 xpvavend = &xpvav[1008 / sizeof(XPVAV) - 1];
612f20c3 633 PL_xpvav_root = ++xpvav;
932e9ff9
VB		 634 while (xpvav < xpvavend) {
635 xpvav->xav_array = (char*)(xpvav + 1);
636 xpvav++;
637 }
638 xpvav->xav_array = 0;
639}
640
932e9ff9
VB		 641STATIC XPVHV*
642S_new_xpvhv(pTHX)
643{
644 XPVHV* xpvhv;
645 LOCK_SV_MUTEX;
646 if (!PL_xpvhv_root)
647 more_xpvhv();
648 xpvhv = PL_xpvhv_root;
649 PL_xpvhv_root = (XPVHV*)xpvhv->xhv_array;
650 UNLOCK_SV_MUTEX;
651 return xpvhv;
652}
653
654STATIC void
655S_del_xpvhv(pTHX_ XPVHV *p)
656{
657 LOCK_SV_MUTEX;
658 p->xhv_array = (char*)PL_xpvhv_root;
659 PL_xpvhv_root = p;
660 UNLOCK_SV_MUTEX;
661}
662
932e9ff9
VB		 663STATIC void
664S_more_xpvhv(pTHX)
665{
666 register XPVHV* xpvhv;
667 register XPVHV* xpvhvend;
612f20c3
GS		 668 New(718, xpvhv, 1008/sizeof(XPVHV), XPVHV);
669 xpvhv->xhv_array = (char*)PL_xpvhv_arenaroot;
670 PL_xpvhv_arenaroot = xpvhv;
671
932e9ff9 672 xpvhvend = &xpvhv[1008 / sizeof(XPVHV) - 1];
612f20c3 673 PL_xpvhv_root = ++xpvhv;
932e9ff9
VB		 674 while (xpvhv < xpvhvend) {
675 xpvhv->xhv_array = (char*)(xpvhv + 1);
676 xpvhv++;
677 }
678 xpvhv->xhv_array = 0;
679}
680
932e9ff9
VB		 681STATIC XPVMG*
682S_new_xpvmg(pTHX)
683{
684 XPVMG* xpvmg;
685 LOCK_SV_MUTEX;
686 if (!PL_xpvmg_root)
687 more_xpvmg();
688 xpvmg = PL_xpvmg_root;
689 PL_xpvmg_root = (XPVMG*)xpvmg->xpv_pv;
690 UNLOCK_SV_MUTEX;
691 return xpvmg;
692}
693
694STATIC void
695S_del_xpvmg(pTHX_ XPVMG *p)
696{
697 LOCK_SV_MUTEX;
698 p->xpv_pv = (char*)PL_xpvmg_root;
699 PL_xpvmg_root = p;
700 UNLOCK_SV_MUTEX;
701}
702
932e9ff9
VB		 703STATIC void
704S_more_xpvmg(pTHX)
705{
706 register XPVMG* xpvmg;
707 register XPVMG* xpvmgend;
612f20c3
GS		 708 New(719, xpvmg, 1008/sizeof(XPVMG), XPVMG);
709 xpvmg->xpv_pv = (char*)PL_xpvmg_arenaroot;
710 PL_xpvmg_arenaroot = xpvmg;
711
932e9ff9 712 xpvmgend = &xpvmg[1008 / sizeof(XPVMG) - 1];
612f20c3 713 PL_xpvmg_root = ++xpvmg;
932e9ff9
VB		 714 while (xpvmg < xpvmgend) {
715 xpvmg->xpv_pv = (char*)(xpvmg + 1);
716 xpvmg++;
717 }
718 xpvmg->xpv_pv = 0;
719}
720
932e9ff9
VB		 721STATIC XPVLV*
722S_new_xpvlv(pTHX)
723{
724 XPVLV* xpvlv;
725 LOCK_SV_MUTEX;
726 if (!PL_xpvlv_root)
727 more_xpvlv();
728 xpvlv = PL_xpvlv_root;
729 PL_xpvlv_root = (XPVLV*)xpvlv->xpv_pv;
730 UNLOCK_SV_MUTEX;
731 return xpvlv;
732}
733
734STATIC void
735S_del_xpvlv(pTHX_ XPVLV *p)
736{
737 LOCK_SV_MUTEX;
738 p->xpv_pv = (char*)PL_xpvlv_root;
739 PL_xpvlv_root = p;
740 UNLOCK_SV_MUTEX;
741}
742
932e9ff9
VB		 743STATIC void
744S_more_xpvlv(pTHX)
745{
746 register XPVLV* xpvlv;
747 register XPVLV* xpvlvend;
612f20c3
GS		 748 New(720, xpvlv, 1008/sizeof(XPVLV), XPVLV);
749 xpvlv->xpv_pv = (char*)PL_xpvlv_arenaroot;
750 PL_xpvlv_arenaroot = xpvlv;
751
932e9ff9 752 xpvlvend = &xpvlv[1008 / sizeof(XPVLV) - 1];
612f20c3 753 PL_xpvlv_root = ++xpvlv;
932e9ff9
VB		 754 while (xpvlv < xpvlvend) {
755 xpvlv->xpv_pv = (char*)(xpvlv + 1);
756 xpvlv++;
757 }
758 xpvlv->xpv_pv = 0;
759}
760
932e9ff9
VB		 761STATIC XPVBM*
762S_new_xpvbm(pTHX)
763{
764 XPVBM* xpvbm;
765 LOCK_SV_MUTEX;
766 if (!PL_xpvbm_root)
767 more_xpvbm();
768 xpvbm = PL_xpvbm_root;
769 PL_xpvbm_root = (XPVBM*)xpvbm->xpv_pv;
770 UNLOCK_SV_MUTEX;
771 return xpvbm;
772}
773
774STATIC void
775S_del_xpvbm(pTHX_ XPVBM *p)
776{
777 LOCK_SV_MUTEX;
778 p->xpv_pv = (char*)PL_xpvbm_root;
779 PL_xpvbm_root = p;
780 UNLOCK_SV_MUTEX;
781}
782
932e9ff9
VB		 783STATIC void
784S_more_xpvbm(pTHX)
785{
786 register XPVBM* xpvbm;
787 register XPVBM* xpvbmend;
612f20c3
GS		 788 New(721, xpvbm, 1008/sizeof(XPVBM), XPVBM);
789 xpvbm->xpv_pv = (char*)PL_xpvbm_arenaroot;
790 PL_xpvbm_arenaroot = xpvbm;
791
932e9ff9 792 xpvbmend = &xpvbm[1008 / sizeof(XPVBM) - 1];
612f20c3 793 PL_xpvbm_root = ++xpvbm;
932e9ff9
VB		 794 while (xpvbm < xpvbmend) {
795 xpvbm->xpv_pv = (char*)(xpvbm + 1);
796 xpvbm++;
797 }
798 xpvbm->xpv_pv = 0;
799}
800
d33b2eba
GS		 801#ifdef LEAKTEST
802# define my_safemalloc(s) (void*)safexmalloc(717,s)
803# define my_safefree(p) safexfree((char*)p)
804#else
805# define my_safemalloc(s) (void*)safemalloc(s)
806# define my_safefree(p) safefree((char*)p)
807#endif
463ee0b2 808
d33b2eba 809#ifdef PURIFY
463ee0b2 810
d33b2eba
GS		 811#define new_XIV() my_safemalloc(sizeof(XPVIV))
812#define del_XIV(p) my_safefree(p)
ed6116ce 813
d33b2eba
GS		 814#define new_XNV() my_safemalloc(sizeof(XPVNV))
815#define del_XNV(p) my_safefree(p)
463ee0b2 816
d33b2eba
GS		 817#define new_XRV() my_safemalloc(sizeof(XRV))
818#define del_XRV(p) my_safefree(p)
8c52afec 819
d33b2eba
GS		 820#define new_XPV() my_safemalloc(sizeof(XPV))
821#define del_XPV(p) my_safefree(p)
9b94d1dd 822
d33b2eba
GS		 823#define new_XPVIV() my_safemalloc(sizeof(XPVIV))
824#define del_XPVIV(p) my_safefree(p)
932e9ff9 825
d33b2eba
GS		 826#define new_XPVNV() my_safemalloc(sizeof(XPVNV))
827#define del_XPVNV(p) my_safefree(p)
932e9ff9 828
d33b2eba
GS		 829#define new_XPVCV() my_safemalloc(sizeof(XPVCV))
830#define del_XPVCV(p) my_safefree(p)
932e9ff9 831
d33b2eba
GS		 832#define new_XPVAV() my_safemalloc(sizeof(XPVAV))
833#define del_XPVAV(p) my_safefree(p)
834
835#define new_XPVHV() my_safemalloc(sizeof(XPVHV))
836#define del_XPVHV(p) my_safefree(p)
8c52afec 837
d33b2eba
GS		 838#define new_XPVMG() my_safemalloc(sizeof(XPVMG))
839#define del_XPVMG(p) my_safefree(p)
840
841#define new_XPVLV() my_safemalloc(sizeof(XPVLV))
842#define del_XPVLV(p) my_safefree(p)
843
844#define new_XPVBM() my_safemalloc(sizeof(XPVBM))
845#define del_XPVBM(p) my_safefree(p)
846
847#else /* !PURIFY */
848
849#define new_XIV() (void*)new_xiv()
850#define del_XIV(p) del_xiv((XPVIV*) p)
851
852#define new_XNV() (void*)new_xnv()
853#define del_XNV(p) del_xnv((XPVNV*) p)
9b94d1dd 854
d33b2eba
GS		 855#define new_XRV() (void*)new_xrv()
856#define del_XRV(p) del_xrv((XRV*) p)
9b94d1dd 857
d33b2eba
GS		 858#define new_XPV() (void*)new_xpv()
859#define del_XPV(p) del_xpv((XPV *)p)
860
861#define new_XPVIV() (void*)new_xpviv()
862#define del_XPVIV(p) del_xpviv((XPVIV *)p)
863
864#define new_XPVNV() (void*)new_xpvnv()
865#define del_XPVNV(p) del_xpvnv((XPVNV *)p)
866
867#define new_XPVCV() (void*)new_xpvcv()
868#define del_XPVCV(p) del_xpvcv((XPVCV *)p)
869
870#define new_XPVAV() (void*)new_xpvav()
871#define del_XPVAV(p) del_xpvav((XPVAV *)p)
872
873#define new_XPVHV() (void*)new_xpvhv()
874#define del_XPVHV(p) del_xpvhv((XPVHV *)p)
8c52afec 875
d33b2eba
GS		 876#define new_XPVMG() (void*)new_xpvmg()
877#define del_XPVMG(p) del_xpvmg((XPVMG *)p)
878
879#define new_XPVLV() (void*)new_xpvlv()
880#define del_XPVLV(p) del_xpvlv((XPVLV *)p)
881
882#define new_XPVBM() (void*)new_xpvbm()
883#define del_XPVBM(p) del_xpvbm((XPVBM *)p)
884
885#endif /* PURIFY */
9b94d1dd 886
d33b2eba
GS		 887#define new_XPVGV() my_safemalloc(sizeof(XPVGV))
888#define del_XPVGV(p) my_safefree(p)
889
890#define new_XPVFM() my_safemalloc(sizeof(XPVFM))
891#define del_XPVFM(p) my_safefree(p)
8c52afec 892
d33b2eba
GS		 893#define new_XPVIO() my_safemalloc(sizeof(XPVIO))
894#define del_XPVIO(p) my_safefree(p)
8990e307 895
954c1994
GS		 896/*
897=for apidoc sv_upgrade
898
899Upgrade an SV to a more complex form. Use C<SvUPGRADE>. See
900C<svtype>.
901
902=cut
903*/
904
79072805 905bool
864dbfa3 906Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt)
79072805
LW		 907{
908 char* pv;
909 U32 cur;
910 U32 len;
a0d0e21e 911 IV iv;
65202027 912 NV nv;
79072805
LW		 913 MAGIC* magic;
914 HV* stash;
915
916 if (SvTYPE(sv) == mt)
917 return TRUE;
918
a5f75d66
AD		 919 if (mt < SVt_PVIV)
920 (void)SvOOK_off(sv);
921
79072805
LW		 922 switch (SvTYPE(sv)) {
923 case SVt_NULL:
924 pv = 0;
925 cur = 0;
926 len = 0;
927 iv = 0;
928 nv = 0.0;
929 magic = 0;
930 stash = 0;
931 break;
79072805
LW		 932 case SVt_IV:
933 pv = 0;
934 cur = 0;
935 len = 0;
463ee0b2 936 iv = SvIVX(sv);
65202027 937 nv = (NV)SvIVX(sv);
79072805
LW		 938 del_XIV(SvANY(sv));
939 magic = 0;
940 stash = 0;
ed6116ce 941 if (mt == SVt_NV)
463ee0b2 942 mt = SVt_PVNV;
ed6116ce
LW		 943 else if (mt < SVt_PVIV)
944 mt = SVt_PVIV;
79072805
LW		 945 break;
946 case SVt_NV:
947 pv = 0;
948 cur = 0;
949 len = 0;
463ee0b2 950 nv = SvNVX(sv);
1bd302c3 951 iv = I_V(nv);
79072805
LW		 952 magic = 0;
953 stash = 0;
954 del_XNV(SvANY(sv));
955 SvANY(sv) = 0;
ed6116ce 956 if (mt < SVt_PVNV)
79072805
LW		 957 mt = SVt_PVNV;
958 break;
ed6116ce
LW		 959 case SVt_RV:
960 pv = (char*)SvRV(sv);
961 cur = 0;
962 len = 0;
56431972
RB		 963 iv = PTR2IV(pv);
964 nv = PTR2NV(pv);
ed6116ce
LW		 965 del_XRV(SvANY(sv));
966 magic = 0;
967 stash = 0;
968 break;
79072805 969 case SVt_PV:
463ee0b2 970 pv = SvPVX(sv);
79072805
LW		 971 cur = SvCUR(sv);
972 len = SvLEN(sv);
973 iv = 0;
974 nv = 0.0;
975 magic = 0;
976 stash = 0;
977 del_XPV(SvANY(sv));
748a9306
LW		 978 if (mt <= SVt_IV)
979 mt = SVt_PVIV;
980 else if (mt == SVt_NV)
981 mt = SVt_PVNV;
79072805
LW		 982 break;
983 case SVt_PVIV:
463ee0b2 984 pv = SvPVX(sv);
79072805
LW		 985 cur = SvCUR(sv);
986 len = SvLEN(sv);
463ee0b2 987 iv = SvIVX(sv);
79072805
LW		 988 nv = 0.0;
989 magic = 0;
990 stash = 0;
991 del_XPVIV(SvANY(sv));
992 break;
993 case SVt_PVNV:
463ee0b2 994 pv = SvPVX(sv);
79072805
LW		 995 cur = SvCUR(sv);
996 len = SvLEN(sv);
463ee0b2
LW		 997 iv = SvIVX(sv);
998 nv = SvNVX(sv);
79072805
LW		 999 magic = 0;
1000 stash = 0;
1001 del_XPVNV(SvANY(sv));
1002 break;
1003 case SVt_PVMG:
463ee0b2 1004 pv = SvPVX(sv);
79072805
LW		 1005 cur = SvCUR(sv);
1006 len = SvLEN(sv);
463ee0b2
LW		 1007 iv = SvIVX(sv);
1008 nv = SvNVX(sv);
79072805
LW		 1009 magic = SvMAGIC(sv);
1010 stash = SvSTASH(sv);
1011 del_XPVMG(SvANY(sv));
1012 break;
1013 default:
cea2e8a9 1014 Perl_croak(aTHX_ "Can't upgrade that kind of scalar");
79072805
LW		 1015 }
1016
1017 switch (mt) {
1018 case SVt_NULL:
cea2e8a9 1019 Perl_croak(aTHX_ "Can't upgrade to undef");
79072805
LW		 1020 case SVt_IV:
1021 SvANY(sv) = new_XIV();
463ee0b2 1022 SvIVX(sv) = iv;
79072805
LW		 1023 break;
1024 case SVt_NV:
1025 SvANY(sv) = new_XNV();
463ee0b2 1026 SvNVX(sv) = nv;
79072805 1027 break;
ed6116ce
LW		 1028 case SVt_RV:
1029 SvANY(sv) = new_XRV();
1030 SvRV(sv) = (SV*)pv;
ed6116ce 1031 break;
79072805
LW		 1032 case SVt_PV:
1033 SvANY(sv) = new_XPV();
463ee0b2 1034 SvPVX(sv) = pv;
79072805
LW		 1035 SvCUR(sv) = cur;
1036 SvLEN(sv) = len;
1037 break;
1038 case SVt_PVIV:
1039 SvANY(sv) = new_XPVIV();
463ee0b2 1040 SvPVX(sv) = pv;
79072805
LW		 1041 SvCUR(sv) = cur;
1042 SvLEN(sv) = len;
463ee0b2 1043 SvIVX(sv) = iv;
79072805 1044 if (SvNIOK(sv))
a0d0e21e 1045 (void)SvIOK_on(sv);
79072805
LW		 1046 SvNOK_off(sv);
1047 break;
1048 case SVt_PVNV:
1049 SvANY(sv) = new_XPVNV();
463ee0b2 1050 SvPVX(sv) = pv;
79072805
LW		 1051 SvCUR(sv) = cur;
1052 SvLEN(sv) = len;
463ee0b2
LW		 1053 SvIVX(sv) = iv;
1054 SvNVX(sv) = nv;
79072805
LW		 1055 break;
1056 case SVt_PVMG:
1057 SvANY(sv) = new_XPVMG();
463ee0b2 1058 SvPVX(sv) = pv;
79072805
LW		 1059 SvCUR(sv) = cur;
1060 SvLEN(sv) = len;
463ee0b2
LW		 1061 SvIVX(sv) = iv;
1062 SvNVX(sv) = nv;
79072805
LW		 1063 SvMAGIC(sv) = magic;
1064 SvSTASH(sv) = stash;
1065 break;
1066 case SVt_PVLV:
1067 SvANY(sv) = new_XPVLV();
463ee0b2 1068 SvPVX(sv) = pv;
79072805
LW		 1069 SvCUR(sv) = cur;
1070 SvLEN(sv) = len;
463ee0b2
LW		 1071 SvIVX(sv) = iv;
1072 SvNVX(sv) = nv;
79072805
LW		 1073 SvMAGIC(sv) = magic;
1074 SvSTASH(sv) = stash;
1075 LvTARGOFF(sv) = 0;
1076 LvTARGLEN(sv) = 0;
1077 LvTARG(sv) = 0;
1078 LvTYPE(sv) = 0;
1079 break;
1080 case SVt_PVAV:
1081 SvANY(sv) = new_XPVAV();
463ee0b2
LW		 1082 if (pv)
1083 Safefree(pv);
2304df62 1084 SvPVX(sv) = 0;
d1bf51dd 1085 AvMAX(sv) = -1;
93965878 1086 AvFILLp(sv) = -1;
463ee0b2
LW		 1087 SvIVX(sv) = 0;
1088 SvNVX(sv) = 0.0;
1089 SvMAGIC(sv) = magic;
1090 SvSTASH(sv) = stash;
1091 AvALLOC(sv) = 0;
79072805
LW		 1092 AvARYLEN(sv) = 0;
1093 AvFLAGS(sv) = 0;
1094 break;
1095 case SVt_PVHV:
1096 SvANY(sv) = new_XPVHV();
463ee0b2
LW		 1097 if (pv)
1098 Safefree(pv);
1099 SvPVX(sv) = 0;
1100 HvFILL(sv) = 0;
1101 HvMAX(sv) = 0;
1102 HvKEYS(sv) = 0;
1103 SvNVX(sv) = 0.0;
79072805
LW		 1104 SvMAGIC(sv) = magic;
1105 SvSTASH(sv) = stash;
79072805
LW		 1106 HvRITER(sv) = 0;
1107 HvEITER(sv) = 0;
1108 HvPMROOT(sv) = 0;
1109 HvNAME(sv) = 0;
79072805
LW		 1110 break;
1111 case SVt_PVCV:
1112 SvANY(sv) = new_XPVCV();
748a9306 1113 Zero(SvANY(sv), 1, XPVCV);
463ee0b2 1114 SvPVX(sv) = pv;
79072805
LW		 1115 SvCUR(sv) = cur;
1116 SvLEN(sv) = len;
463ee0b2
LW		 1117 SvIVX(sv) = iv;
1118 SvNVX(sv) = nv;
79072805
LW		 1119 SvMAGIC(sv) = magic;
1120 SvSTASH(sv) = stash;
79072805
LW		 1121 break;
1122 case SVt_PVGV:
1123 SvANY(sv) = new_XPVGV();
463ee0b2 1124 SvPVX(sv) = pv;
79072805
LW		 1125 SvCUR(sv) = cur;
1126 SvLEN(sv) = len;
463ee0b2
LW		 1127 SvIVX(sv) = iv;
1128 SvNVX(sv) = nv;
79072805
LW		 1129 SvMAGIC(sv) = magic;
1130 SvSTASH(sv) = stash;
93a17b20 1131 GvGP(sv) = 0;
79072805
LW		 1132 GvNAME(sv) = 0;
1133 GvNAMELEN(sv) = 0;
1134 GvSTASH(sv) = 0;
a5f75d66 1135 GvFLAGS(sv) = 0;
79072805
LW		 1136 break;
1137 case SVt_PVBM:
1138 SvANY(sv) = new_XPVBM();
463ee0b2 1139 SvPVX(sv) = pv;
79072805
LW		 1140 SvCUR(sv) = cur;
1141 SvLEN(sv) = len;
463ee0b2
LW		 1142 SvIVX(sv) = iv;
1143 SvNVX(sv) = nv;
79072805
LW		 1144 SvMAGIC(sv) = magic;
1145 SvSTASH(sv) = stash;
1146 BmRARE(sv) = 0;
1147 BmUSEFUL(sv) = 0;
1148 BmPREVIOUS(sv) = 0;
1149 break;
1150 case SVt_PVFM:
1151 SvANY(sv) = new_XPVFM();
748a9306 1152 Zero(SvANY(sv), 1, XPVFM);
463ee0b2 1153 SvPVX(sv) = pv;
79072805
LW		 1154 SvCUR(sv) = cur;
1155 SvLEN(sv) = len;
463ee0b2
LW		 1156 SvIVX(sv) = iv;
1157 SvNVX(sv) = nv;
79072805
LW		 1158 SvMAGIC(sv) = magic;
1159 SvSTASH(sv) = stash;
79072805 1160 break;
8990e307
LW		 1161 case SVt_PVIO:
1162 SvANY(sv) = new_XPVIO();
748a9306 1163 Zero(SvANY(sv), 1, XPVIO);
8990e307
LW		 1164 SvPVX(sv) = pv;
1165 SvCUR(sv) = cur;
1166 SvLEN(sv) = len;
1167 SvIVX(sv) = iv;
1168 SvNVX(sv) = nv;
1169 SvMAGIC(sv) = magic;
1170 SvSTASH(sv) = stash;
85e6fe83 1171 IoPAGE_LEN(sv) = 60;
8990e307
LW		 1172 break;
1173 }
1174 SvFLAGS(sv) &= ~SVTYPEMASK;
1175 SvFLAGS(sv) |= mt;
79072805
LW		 1176 return TRUE;
1177}
1178
79072805 1179int
864dbfa3 1180Perl_sv_backoff(pTHX_ register SV *sv)
79072805
LW		 1181{
1182 assert(SvOOK(sv));
463ee0b2
LW		 1183 if (SvIVX(sv)) {
1184 char *s = SvPVX(sv);
1185 SvLEN(sv) += SvIVX(sv);
1186 SvPVX(sv) -= SvIVX(sv);
79072805 1187 SvIV_set(sv, 0);
463ee0b2 1188 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
79072805
LW		 1189 }
1190 SvFLAGS(sv) &= ~SVf_OOK;
a0d0e21e 1191 return 0;
79072805
LW		 1192}
1193
954c1994
GS		 1194/*
1195=for apidoc sv_grow
1196
1197Expands the character buffer in the SV. This will use C<sv_unref> and will
1198upgrade the SV to C<SVt_PV>. Returns a pointer to the character buffer.
1199Use C<SvGROW>.
1200
1201=cut
1202*/
1203
79072805 1204char *
864dbfa3 1205Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen)
79072805
LW		 1206{
1207 register char *s;
1208
55497cff 1209#ifdef HAS_64K_LIMIT
79072805 1210 if (newlen >= 0x10000) {
1d7c1841
GS		 1211 PerlIO_printf(Perl_debug_log,
1212 "Allocation too large: %"UVxf"\n", (UV)newlen);
79072805
LW		 1213 my_exit(1);
1214 }
55497cff 1215#endif /* HAS_64K_LIMIT */
a0d0e21e
LW		 1216 if (SvROK(sv))
1217 sv_unref(sv);
79072805
LW		 1218 if (SvTYPE(sv) < SVt_PV) {
1219 sv_upgrade(sv, SVt_PV);
463ee0b2 1220 s = SvPVX(sv);
79072805
LW		 1221 }
1222 else if (SvOOK(sv)) { /* pv is offset? */
1223 sv_backoff(sv);
463ee0b2 1224 s = SvPVX(sv);
79072805
LW		 1225 if (newlen > SvLEN(sv))
1226 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
c6f8c383
GA		 1227#ifdef HAS_64K_LIMIT
1228 if (newlen >= 0x10000)
1229 newlen = 0xFFFF;
1230#endif
79072805
LW		 1231 }
1232 else
463ee0b2 1233 s = SvPVX(sv);
79072805 1234 if (newlen > SvLEN(sv)) { /* need more room? */
8d6dde3e 1235 if (SvLEN(sv) && s) {
f5a32c7f 1236#if defined(MYMALLOC) && !defined(LEAKTEST)
8d6dde3e
IZ		 1237 STRLEN l = malloced_size((void*)SvPVX(sv));
1238 if (newlen <= l) {
1239 SvLEN_set(sv, l);
1240 return s;
1241 } else
c70c8a0a 1242#endif
79072805 1243 Renew(s,newlen,char);
8d6dde3e 1244 }
79072805
LW		 1245 else
1246 New(703,s,newlen,char);
1247 SvPV_set(sv, s);
1248 SvLEN_set(sv, newlen);
1249 }
1250 return s;
1251}
1252
954c1994
GS		 1253/*
1254=for apidoc sv_setiv
1255
1256Copies an integer into the given SV. Does not handle 'set' magic. See
1257C<sv_setiv_mg>.
1258
1259=cut
1260*/
1261
79072805 1262void
864dbfa3 1263Perl_sv_setiv(pTHX_ register SV *sv, IV i)
79072805 1264{
2213622d 1265 SV_CHECK_THINKFIRST(sv);
463ee0b2
LW		 1266 switch (SvTYPE(sv)) {
1267 case SVt_NULL:
79072805 1268 sv_upgrade(sv, SVt_IV);
463ee0b2
LW		 1269 break;
1270 case SVt_NV:
1271 sv_upgrade(sv, SVt_PVNV);
1272 break;
ed6116ce 1273 case SVt_RV:
463ee0b2 1274 case SVt_PV:
79072805 1275 sv_upgrade(sv, SVt_PVIV);
463ee0b2 1276 break;
a0d0e21e
LW		 1277
1278 case SVt_PVGV:
a0d0e21e
LW		 1279 case SVt_PVAV:
1280 case SVt_PVHV:
1281 case SVt_PVCV:
1282 case SVt_PVFM:
1283 case SVt_PVIO:
11343788
MB		 1284 {
1285 dTHR;
cea2e8a9 1286 Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0),
22c35a8c 1287 PL_op_desc[PL_op->op_type]);
11343788 1288 }
463ee0b2 1289 }
a0d0e21e 1290 (void)SvIOK_only(sv); /* validate number */
a5f75d66 1291 SvIVX(sv) = i;
463ee0b2 1292 SvTAINT(sv);
79072805
LW		 1293}
1294
954c1994
GS		 1295/*
1296=for apidoc sv_setiv_mg
1297
1298Like C<sv_setiv>, but also handles 'set' magic.
1299
1300=cut
1301*/
1302
79072805 1303void
864dbfa3 1304Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i)
ef50df4b
GS		 1305{
1306 sv_setiv(sv,i);
1307 SvSETMAGIC(sv);
1308}
1309
954c1994
GS		 1310/*
1311=for apidoc sv_setuv
1312
1313Copies an unsigned integer into the given SV. Does not handle 'set' magic.
1314See C<sv_setuv_mg>.
1315
1316=cut
1317*/
1318
ef50df4b 1319void
864dbfa3 1320Perl_sv_setuv(pTHX_ register SV *sv, UV u)
55497cff 1321{
25da4f38
IZ		 1322 sv_setiv(sv, 0);
1323 SvIsUV_on(sv);
1324 SvUVX(sv) = u;
55497cff 1325}
1326
954c1994
GS		 1327/*
1328=for apidoc sv_setuv_mg
1329
1330Like C<sv_setuv>, but also handles 'set' magic.
1331
1332=cut
1333*/
1334
55497cff 1335void
864dbfa3 1336Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u)
ef50df4b
GS		 1337{
1338 sv_setuv(sv,u);
1339 SvSETMAGIC(sv);
1340}
1341
954c1994
GS		 1342/*
1343=for apidoc sv_setnv
1344
1345Copies a double into the given SV. Does not handle 'set' magic. See
1346C<sv_setnv_mg>.
1347
1348=cut
1349*/
1350
ef50df4b 1351void
65202027 1352Perl_sv_setnv(pTHX_ register SV *sv, NV num)
79072805 1353{
2213622d 1354 SV_CHECK_THINKFIRST(sv);
a0d0e21e
LW		 1355 switch (SvTYPE(sv)) {
1356 case SVt_NULL:
1357 case SVt_IV:
79072805 1358 sv_upgrade(sv, SVt_NV);
a0d0e21e 1359 break;
a0d0e21e
LW		 1360 case SVt_RV:
1361 case SVt_PV:
1362 case SVt_PVIV:
79072805 1363 sv_upgrade(sv, SVt_PVNV);
a0d0e21e 1364 break;
827b7e14 1365
a0d0e21e 1366 case SVt_PVGV:
a0d0e21e
LW		 1367 case SVt_PVAV:
1368 case SVt_PVHV:
1369 case SVt_PVCV:
1370 case SVt_PVFM:
1371 case SVt_PVIO:
11343788
MB		 1372 {
1373 dTHR;
cea2e8a9 1374 Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0),
22c35a8c 1375 PL_op_name[PL_op->op_type]);
11343788 1376 }
79072805 1377 }
463ee0b2 1378 SvNVX(sv) = num;
a0d0e21e 1379 (void)SvNOK_only(sv); /* validate number */
463ee0b2 1380 SvTAINT(sv);
79072805
LW		 1381}
1382
954c1994
GS		 1383/*
1384=for apidoc sv_setnv_mg
1385
1386Like C<sv_setnv>, but also handles 'set' magic.
1387
1388=cut
1389*/
1390
ef50df4b 1391void
65202027 1392Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num)
ef50df4b
GS		 1393{
1394 sv_setnv(sv,num);
1395 SvSETMAGIC(sv);
1396}
1397
76e3520e 1398STATIC void
cea2e8a9 1399S_not_a_number(pTHX_ SV *sv)
a0d0e21e 1400{
11343788 1401 dTHR;
a0d0e21e
LW		 1402 char tmpbuf[64];
1403 char *d = tmpbuf;
1404 char *s;
dc28f22b
GA		 1405 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1406 /* each *s can expand to 4 chars + "...\0",
1407 i.e. need room for 8 chars */
a0d0e21e 1408
dc28f22b 1409 for (s = SvPVX(sv); *s && d < limit; s++) {
bbce6d69 1410 int ch = *s & 0xFF;
1411 if (ch & 128 && !isPRINT_LC(ch)) {
a0d0e21e
LW		 1412 *d++ = 'M';
1413 *d++ = '-';
1414 ch &= 127;
1415 }
bbce6d69 1416 if (ch == '\n') {
1417 *d++ = '\\';
1418 *d++ = 'n';
1419 }
1420 else if (ch == '\r') {
1421 *d++ = '\\';
1422 *d++ = 'r';
1423 }
1424 else if (ch == '\f') {
1425 *d++ = '\\';
1426 *d++ = 'f';
1427 }
1428 else if (ch == '\\') {
1429 *d++ = '\\';
1430 *d++ = '\\';
1431 }
1432 else if (isPRINT_LC(ch))
a0d0e21e
LW		 1433 *d++ = ch;
1434 else {
1435 *d++ = '^';
bbce6d69 1436 *d++ = toCTRL(ch);
a0d0e21e
LW		 1437 }
1438 }
1439 if (*s) {
1440 *d++ = '.';
1441 *d++ = '.';
1442 *d++ = '.';
1443 }
1444 *d = '\0';
1445
533c011a 1446 if (PL_op)
42d38218
MS		 1447 Perl_warner(aTHX_ WARN_NUMERIC,
1448 "Argument \"%s\" isn't numeric in %s", tmpbuf,
1449 PL_op_desc[PL_op->op_type]);
a0d0e21e 1450 else
42d38218
MS		 1451 Perl_warner(aTHX_ WARN_NUMERIC,
1452 "Argument \"%s\" isn't numeric", tmpbuf);
a0d0e21e
LW		 1453}
1454
cf2093f6 1455/* the number can be converted to integer with atol() or atoll() */
25da4f38
IZ		 1456#define IS_NUMBER_TO_INT_BY_ATOL 0x01
1457#define IS_NUMBER_TO_INT_BY_ATOF 0x02 /* atol() may be != atof() */
1458#define IS_NUMBER_NOT_IV 0x04 /* (IV)atof() may be != atof() */
1459#define IS_NUMBER_NEG 0x08 /* not good to cache UV */
300aed98 1460#define IS_NUMBER_INFINITY 0x10 /* this is big */
25da4f38
IZ		 1461
1462/* Actually, ISO C leaves conversion of UV to IV undefined, but
1463 until proven guilty, assume that things are not that bad... */
1464
a0d0e21e 1465IV
864dbfa3 1466Perl_sv_2iv(pTHX_ register SV *sv)
79072805
LW		 1467{
1468 if (!sv)
1469 return 0;
8990e307 1470 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 1471 mg_get(sv);
1472 if (SvIOKp(sv))
1473 return SvIVX(sv);
748a9306 1474 if (SvNOKp(sv)) {
25da4f38 1475 return I_V(SvNVX(sv));
748a9306 1476 }
36477c24 1477 if (SvPOKp(sv) && SvLEN(sv))
1478 return asIV(sv);
3fe9a6f1 1479 if (!SvROK(sv)) {
d008e5eb 1480 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1481 dTHR;
d008e5eb 1482 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1483 report_uninit();
c6ee37c5 1484 }
36477c24 1485 return 0;
3fe9a6f1 1486 }
463ee0b2 1487 }
ed6116ce 1488 if (SvTHINKFIRST(sv)) {
a0d0e21e 1489 if (SvROK(sv)) {
a0d0e21e
LW		 1490 SV* tmpstr;
1491 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
9e7bc3e8 1492 return SvIV(tmpstr);
56431972 1493 return PTR2IV(SvRV(sv));
a0d0e21e 1494 }
0336b60e
IZ		 1495 if (SvREADONLY(sv) && !SvOK(sv)) {
1496 dTHR;
1497 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 1498 report_uninit();
ed6116ce
LW		 1499 return 0;
1500 }
79072805 1501 }
25da4f38
IZ		 1502 if (SvIOKp(sv)) {
1503 if (SvIsUV(sv)) {
1504 return (IV)(SvUVX(sv));
1505 }
1506 else {
1507 return SvIVX(sv);
1508 }
463ee0b2 1509 }
748a9306 1510 if (SvNOKp(sv)) {
25da4f38
IZ		 1511 /* We can cache the IV/UV value even if it not good enough
1512 * to reconstruct NV, since the conversion to PV will prefer
cf2093f6 1513 * NV over IV/UV.
25da4f38
IZ		 1514 */
1515
1516 if (SvTYPE(sv) == SVt_NV)
1517 sv_upgrade(sv, SVt_PVNV);
1518
a5f75d66 1519 (void)SvIOK_on(sv);
65202027 1520 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
748a9306 1521 SvIVX(sv) = I_V(SvNVX(sv));
25da4f38 1522 else {
ff68c719 1523 SvUVX(sv) = U_V(SvNVX(sv));
25da4f38
IZ		 1524 SvIsUV_on(sv);
1525 ret_iv_max:
cf2093f6 1526 DEBUG_c(PerlIO_printf(Perl_debug_log,
57def98f 1527 "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n",
56431972 1528 PTR2UV(sv),
57def98f
JH		 1529 SvUVX(sv),
1530 SvUVX(sv)));
25da4f38
IZ		 1531 return (IV)SvUVX(sv);
1532 }
748a9306
LW		 1533 }
1534 else if (SvPOKp(sv) && SvLEN(sv)) {
25da4f38
IZ		 1535 I32 numtype = looks_like_number(sv);
1536
1537 /* We want to avoid a possible problem when we cache an IV which
1538 may be later translated to an NV, and the resulting NV is not
1539 the translation of the initial data.
1540
1541 This means that if we cache such an IV, we need to cache the
1542 NV as well. Moreover, we trade speed for space, and do not
1543 cache the NV if not needed.
1544 */
1545 if (numtype & IS_NUMBER_NOT_IV) {
1546 /* May be not an integer. Need to cache NV if we cache IV
1547 * - otherwise future conversion to NV will be wrong. */
65202027 1548 NV d;
25da4f38 1549
097ee67d 1550 d = Atof(SvPVX(sv));
25da4f38
IZ		 1551
1552 if (SvTYPE(sv) < SVt_PVNV)
1553 sv_upgrade(sv, SVt_PVNV);
1554 SvNVX(sv) = d;
1555 (void)SvNOK_on(sv);
1556 (void)SvIOK_on(sv);
65202027 1557#if defined(USE_LONG_DOUBLE)
1d7c1841
GS		 1558 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1559 PTR2UV(sv), SvNVX(sv)));
65202027 1560#else
1d7c1841
GS		 1561 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%g)\n",
1562 PTR2UV(sv), SvNVX(sv)));
65202027 1563#endif
65202027 1564 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
25da4f38
IZ		 1565 SvIVX(sv) = I_V(SvNVX(sv));
1566 else {
1567 SvUVX(sv) = U_V(SvNVX(sv));
1568 SvIsUV_on(sv);
1569 goto ret_iv_max;
1570 }
1571 }
1572 else if (numtype) {
1573 /* The NV may be reconstructed from IV - safe to cache IV,
1574 which may be calculated by atol(). */
1575 if (SvTYPE(sv) == SVt_PV)
1576 sv_upgrade(sv, SVt_PVIV);
1577 (void)SvIOK_on(sv);
cf2093f6 1578 SvIVX(sv) = Atol(SvPVX(sv));
25da4f38
IZ		 1579 }
1580 else { /* Not a number. Cache 0. */
1581 dTHR;
1582
1583 if (SvTYPE(sv) < SVt_PVIV)
1584 sv_upgrade(sv, SVt_PVIV);
25da4f38 1585 (void)SvIOK_on(sv);
7b9e3c00 1586 SvIVX(sv) = 0;
25da4f38
IZ		 1587 if (ckWARN(WARN_NUMERIC))
1588 not_a_number(sv);
1589 }
93a17b20 1590 }
79072805 1591 else {
11343788 1592 dTHR;
599cee73 1593 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1d7c1841 1594 report_uninit();
25da4f38
IZ		 1595 if (SvTYPE(sv) < SVt_IV)
1596 /* Typically the caller expects that sv_any is not NULL now. */
1597 sv_upgrade(sv, SVt_IV);
a0d0e21e 1598 return 0;
79072805 1599 }
1d7c1841
GS		 1600 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n",
1601 PTR2UV(sv),SvIVX(sv)));
25da4f38 1602 return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv);
79072805
LW		 1603}
1604
ff68c719 1605UV
864dbfa3 1606Perl_sv_2uv(pTHX_ register SV *sv)
ff68c719 1607{
1608 if (!sv)
1609 return 0;
1610 if (SvGMAGICAL(sv)) {
1611 mg_get(sv);
1612 if (SvIOKp(sv))
1613 return SvUVX(sv);
1614 if (SvNOKp(sv))
1615 return U_V(SvNVX(sv));
36477c24 1616 if (SvPOKp(sv) && SvLEN(sv))
1617 return asUV(sv);
3fe9a6f1 1618 if (!SvROK(sv)) {
d008e5eb 1619 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1620 dTHR;
d008e5eb 1621 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1622 report_uninit();
c6ee37c5 1623 }
36477c24 1624 return 0;
3fe9a6f1 1625 }
ff68c719 1626 }
1627 if (SvTHINKFIRST(sv)) {
1628 if (SvROK(sv)) {
ff68c719 1629 SV* tmpstr;
1630 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
9e7bc3e8 1631 return SvUV(tmpstr);
56431972 1632 return PTR2UV(SvRV(sv));
ff68c719 1633 }
0336b60e
IZ		 1634 if (SvREADONLY(sv) && !SvOK(sv)) {
1635 dTHR;
1636 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 1637 report_uninit();
ff68c719 1638 return 0;
1639 }
1640 }
25da4f38
IZ		 1641 if (SvIOKp(sv)) {
1642 if (SvIsUV(sv)) {
1643 return SvUVX(sv);
1644 }
1645 else {
1646 return (UV)SvIVX(sv);
1647 }
ff68c719 1648 }
1649 if (SvNOKp(sv)) {
25da4f38
IZ		 1650 /* We can cache the IV/UV value even if it not good enough
1651 * to reconstruct NV, since the conversion to PV will prefer
cf2093f6 1652 * NV over IV/UV.
25da4f38
IZ		 1653 */
1654 if (SvTYPE(sv) == SVt_NV)
1655 sv_upgrade(sv, SVt_PVNV);
ff68c719 1656 (void)SvIOK_on(sv);
25da4f38
IZ		 1657 if (SvNVX(sv) >= -0.5) {
1658 SvIsUV_on(sv);
1659 SvUVX(sv) = U_V(SvNVX(sv));
1660 }
1661 else {
1662 SvIVX(sv) = I_V(SvNVX(sv));
1663 ret_zero:
cf2093f6 1664 DEBUG_c(PerlIO_printf(Perl_debug_log,
07270b1a 1665 "0x%"UVxf" 2uv(%"IVdf" => %"IVdf") (as signed)\n",
57def98f
JH		 1666 PTR2UV(sv),
1667 SvIVX(sv),
1668 (IV)(UV)SvIVX(sv)));
25da4f38
IZ		 1669 return (UV)SvIVX(sv);
1670 }
ff68c719 1671 }
1672 else if (SvPOKp(sv) && SvLEN(sv)) {
25da4f38
IZ		 1673 I32 numtype = looks_like_number(sv);
1674
1675 /* We want to avoid a possible problem when we cache a UV which
1676 may be later translated to an NV, and the resulting NV is not
1677 the translation of the initial data.
1678
1679 This means that if we cache such a UV, we need to cache the
1680 NV as well. Moreover, we trade speed for space, and do not
1681 cache the NV if not needed.
1682 */
1683 if (numtype & IS_NUMBER_NOT_IV) {
1684 /* May be not an integer. Need to cache NV if we cache IV
1685 * - otherwise future conversion to NV will be wrong. */
65202027 1686 NV d;
25da4f38 1687
cf2093f6 1688 d = Atof(SvPVX(sv));
25da4f38
IZ		 1689
1690 if (SvTYPE(sv) < SVt_PVNV)
1691 sv_upgrade(sv, SVt_PVNV);
1692 SvNVX(sv) = d;
1693 (void)SvNOK_on(sv);
1694 (void)SvIOK_on(sv);
65202027 1695#if defined(USE_LONG_DOUBLE)
1d7c1841
GS		 1696 DEBUG_c(PerlIO_printf(Perl_debug_log,
1697 "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1698 PTR2UV(sv), SvNVX(sv)));
65202027 1699#else
1d7c1841
GS		 1700 DEBUG_c(PerlIO_printf(Perl_debug_log,
1701 "0x%"UVxf" 2nv(%g)\n",
1702 PTR2UV(sv), SvNVX(sv)));
65202027 1703#endif
25da4f38
IZ		 1704 if (SvNVX(sv) < -0.5) {
1705 SvIVX(sv) = I_V(SvNVX(sv));
1706 goto ret_zero;
1707 } else {
1708 SvUVX(sv) = U_V(SvNVX(sv));
1709 SvIsUV_on(sv);
1710 }
1711 }
1712 else if (numtype & IS_NUMBER_NEG) {
1713 /* The NV may be reconstructed from IV - safe to cache IV,
1714 which may be calculated by atol(). */
1715 if (SvTYPE(sv) == SVt_PV)
1716 sv_upgrade(sv, SVt_PVIV);
1717 (void)SvIOK_on(sv);
cf2093f6 1718 SvIVX(sv) = (IV)Atol(SvPVX(sv));
25da4f38
IZ		 1719 }
1720 else if (numtype) { /* Non-negative */
1721 /* The NV may be reconstructed from UV - safe to cache UV,
1722 which may be calculated by strtoul()/atol. */
1723 if (SvTYPE(sv) == SVt_PV)
1724 sv_upgrade(sv, SVt_PVIV);
1725 (void)SvIOK_on(sv);
1726 (void)SvIsUV_on(sv);
1727#ifdef HAS_STRTOUL
cf2093f6 1728 SvUVX(sv) = Strtoul(SvPVX(sv), Null(char**), 10);
25da4f38
IZ		 1729#else /* no atou(), but we know the number fits into IV... */
1730 /* The only problem may be if it is negative... */
cf2093f6 1731 SvUVX(sv) = (UV)Atol(SvPVX(sv));
25da4f38
IZ		 1732#endif
1733 }
1734 else { /* Not a number. Cache 0. */
1735 dTHR;
1736
1737 if (SvTYPE(sv) < SVt_PVIV)
1738 sv_upgrade(sv, SVt_PVIV);
25da4f38
IZ		 1739 (void)SvIOK_on(sv);
1740 (void)SvIsUV_on(sv);
7b9e3c00
GS		 1741 SvUVX(sv) = 0; /* We assume that 0s have the
1742 same bitmap in IV and UV. */
25da4f38
IZ		 1743 if (ckWARN(WARN_NUMERIC))
1744 not_a_number(sv);
1745 }
ff68c719 1746 }
1747 else {
d008e5eb 1748 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1749 dTHR;
d008e5eb 1750 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1751 report_uninit();
c6ee37c5 1752 }
25da4f38
IZ		 1753 if (SvTYPE(sv) < SVt_IV)
1754 /* Typically the caller expects that sv_any is not NULL now. */
1755 sv_upgrade(sv, SVt_IV);
ff68c719 1756 return 0;
1757 }
25da4f38 1758
1d7c1841
GS		 1759 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
1760 PTR2UV(sv),SvUVX(sv)));
25da4f38 1761 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
ff68c719 1762}
1763
65202027 1764NV
864dbfa3 1765Perl_sv_2nv(pTHX_ register SV *sv)
79072805
LW		 1766{
1767 if (!sv)
1768 return 0.0;
8990e307 1769 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 1770 mg_get(sv);
1771 if (SvNOKp(sv))
1772 return SvNVX(sv);
a0d0e21e 1773 if (SvPOKp(sv) && SvLEN(sv)) {
d008e5eb 1774 dTHR;
599cee73 1775 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
a0d0e21e 1776 not_a_number(sv);
097ee67d 1777 return Atof(SvPVX(sv));
a0d0e21e 1778 }
25da4f38
IZ		 1779 if (SvIOKp(sv)) {
1780 if (SvIsUV(sv))
65202027 1781 return (NV)SvUVX(sv);
25da4f38 1782 else
65202027 1783 return (NV)SvIVX(sv);
25da4f38 1784 }
16d20bd9 1785 if (!SvROK(sv)) {
d008e5eb 1786 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1787 dTHR;
d008e5eb 1788 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1789 report_uninit();
c6ee37c5 1790 }
16d20bd9
AD		 1791 return 0;
1792 }
463ee0b2 1793 }
ed6116ce 1794 if (SvTHINKFIRST(sv)) {
a0d0e21e 1795 if (SvROK(sv)) {
a0d0e21e
LW		 1796 SV* tmpstr;
1797 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)))
9e7bc3e8 1798 return SvNV(tmpstr);
56431972 1799 return PTR2NV(SvRV(sv));
a0d0e21e 1800 }
0336b60e 1801 if (SvREADONLY(sv) && !SvOK(sv)) {
d008e5eb 1802 dTHR;
599cee73 1803 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 1804 report_uninit();
ed6116ce
LW		 1805 return 0.0;
1806 }
79072805
LW		 1807 }
1808 if (SvTYPE(sv) < SVt_NV) {
463ee0b2
LW		 1809 if (SvTYPE(sv) == SVt_IV)
1810 sv_upgrade(sv, SVt_PVNV);
1811 else
1812 sv_upgrade(sv, SVt_NV);
572bbb43 1813#if defined(USE_LONG_DOUBLE)
097ee67d
JH		 1814 DEBUG_c({
1815 RESTORE_NUMERIC_STANDARD();
1d7c1841
GS		 1816 PerlIO_printf(Perl_debug_log,
1817 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
1818 PTR2UV(sv), SvNVX(sv));
572bbb43
GS		 1819 RESTORE_NUMERIC_LOCAL();
1820 });
65202027 1821#else
572bbb43
GS		 1822 DEBUG_c({
1823 RESTORE_NUMERIC_STANDARD();
1d7c1841
GS		 1824 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
1825 PTR2UV(sv), SvNVX(sv));
097ee67d
JH		 1826 RESTORE_NUMERIC_LOCAL();
1827 });
572bbb43 1828#endif
79072805
LW		 1829 }
1830 else if (SvTYPE(sv) < SVt_PVNV)
1831 sv_upgrade(sv, SVt_PVNV);
748a9306
LW		 1832 if (SvIOKp(sv) &&
1833 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
93a17b20 1834 {
65202027 1835 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
93a17b20 1836 }
748a9306 1837 else if (SvPOKp(sv) && SvLEN(sv)) {
d008e5eb 1838 dTHR;
599cee73 1839 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
a0d0e21e 1840 not_a_number(sv);
097ee67d 1841 SvNVX(sv) = Atof(SvPVX(sv));
93a17b20 1842 }
79072805 1843 else {
11343788 1844 dTHR;
599cee73 1845 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1d7c1841 1846 report_uninit();
25da4f38
IZ		 1847 if (SvTYPE(sv) < SVt_NV)
1848 /* Typically the caller expects that sv_any is not NULL now. */
1849 sv_upgrade(sv, SVt_NV);
a0d0e21e 1850 return 0.0;
79072805
LW		 1851 }
1852 SvNOK_on(sv);
572bbb43 1853#if defined(USE_LONG_DOUBLE)
097ee67d
JH		 1854 DEBUG_c({
1855 RESTORE_NUMERIC_STANDARD();
1d7c1841
GS		 1856 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1857 PTR2UV(sv), SvNVX(sv));
572bbb43
GS		 1858 RESTORE_NUMERIC_LOCAL();
1859 });
65202027 1860#else
572bbb43
GS		 1861 DEBUG_c({
1862 RESTORE_NUMERIC_STANDARD();
1d7c1841
GS		 1863 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
1864 PTR2UV(sv), SvNVX(sv));
097ee67d
JH		 1865 RESTORE_NUMERIC_LOCAL();
1866 });
572bbb43 1867#endif
463ee0b2 1868 return SvNVX(sv);
79072805
LW		 1869}
1870
76e3520e 1871STATIC IV
cea2e8a9 1872S_asIV(pTHX_ SV *sv)
36477c24 1873{
1874 I32 numtype = looks_like_number(sv);
65202027 1875 NV d;
36477c24 1876
25da4f38 1877 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
cf2093f6 1878 return Atol(SvPVX(sv));
d008e5eb
GS		 1879 if (!numtype) {
1880 dTHR;
1881 if (ckWARN(WARN_NUMERIC))
1882 not_a_number(sv);
1883 }
097ee67d 1884 d = Atof(SvPVX(sv));
25da4f38 1885 return I_V(d);
36477c24 1886}
1887
76e3520e 1888STATIC UV
cea2e8a9 1889S_asUV(pTHX_ SV *sv)
36477c24 1890{
1891 I32 numtype = looks_like_number(sv);
1892
84902520 1893#ifdef HAS_STRTOUL
25da4f38 1894 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
cf2093f6 1895 return Strtoul(SvPVX(sv), Null(char**), 10);
84902520 1896#endif
d008e5eb
GS		 1897 if (!numtype) {
1898 dTHR;
1899 if (ckWARN(WARN_NUMERIC))
1900 not_a_number(sv);
1901 }
097ee67d 1902 return U_V(Atof(SvPVX(sv)));
36477c24 1903}
1904
25da4f38
IZ		 1905/*
1906 * Returns a combination of (advisory only - can get false negatives)
1907 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF, IS_NUMBER_NOT_IV,
1908 * IS_NUMBER_NEG
1909 * 0 if does not look like number.
1910 *
1911 * In fact possible values are 0 and
1912 * IS_NUMBER_TO_INT_BY_ATOL 123
1913 * IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV 123.1
1914 * IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV 123e0
300aed98 1915 * IS_NUMBER_INFINITY
25da4f38
IZ		 1916 * with a possible addition of IS_NUMBER_NEG.
1917 */
1918
954c1994
GS		 1919/*
1920=for apidoc looks_like_number
1921
1922Test if an the content of an SV looks like a number (or is a
1923number).
1924
1925=cut
1926*/
1927
36477c24 1928I32
864dbfa3 1929Perl_looks_like_number(pTHX_ SV *sv)
36477c24 1930{
1931 register char *s;
1932 register char *send;
1933 register char *sbegin;
25da4f38
IZ		 1934 register char *nbegin;
1935 I32 numtype = 0;
300aed98 1936 I32 sawinf = 0;
36477c24 1937 STRLEN len;
1938
1939 if (SvPOK(sv)) {
1940 sbegin = SvPVX(sv);
1941 len = SvCUR(sv);
1942 }
1943 else if (SvPOKp(sv))
1944 sbegin = SvPV(sv, len);
1945 else
1946 return 1;
1947 send = sbegin + len;
1948
1949 s = sbegin;
1950 while (isSPACE(*s))
1951 s++;
25da4f38
IZ		 1952 if (*s == '-') {
1953 s++;
1954 numtype = IS_NUMBER_NEG;
1955 }
1956 else if (*s == '+')
36477c24 1957 s++;
ff0cee69 1958
25da4f38
IZ		 1959 nbegin = s;
1960 /*
097ee67d
JH		 1961 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can be converted
1962 * to _integer_ with atol() and IS_NUMBER_TO_INT_BY_ATOF if you need
1963 * (int)atof().
25da4f38
IZ		 1964 */
1965
300aed98 1966 /* next must be digit or the radix separator or beginning of infinity */
ff0cee69 1967 if (isDIGIT(*s)) {
1968 do {
1969 s++;
1970 } while (isDIGIT(*s));
25da4f38
IZ		 1971
1972 if (s - nbegin >= TYPE_DIGITS(IV)) /* Cannot cache ato[ul]() */
1973 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
1974 else
1975 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
1976
097ee67d
JH		 1977 if (*s == '.'
1978#ifdef USE_LOCALE_NUMERIC
1979 || IS_NUMERIC_RADIX(*s)
1980#endif
1981 ) {
ff0cee69 1982 s++;
25da4f38 1983 numtype |= IS_NUMBER_NOT_IV;
097ee67d 1984 while (isDIGIT(*s)) /* optional digits after the radix */
ff0cee69 1985 s++;
1986 }
36477c24 1987 }
097ee67d
JH		 1988 else if (*s == '.'
1989#ifdef USE_LOCALE_NUMERIC
1990 || IS_NUMERIC_RADIX(*s)
1991#endif
1992 ) {
ff0cee69 1993 s++;
25da4f38 1994 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV;
097ee67d 1995 /* no digits before the radix means we need digits after it */
ff0cee69 1996 if (isDIGIT(*s)) {
1997 do {
1998 s++;
1999 } while (isDIGIT(*s));
2000 }
2001 else
2002 return 0;
2003 }
300aed98
JH		 2004 else if (*s == 'I' || *s == 'i') {
2005 s++; if (*s != 'N' && *s != 'n') return 0;
2006 s++; if (*s != 'F' && *s != 'f') return 0;
2007 s++; if (*s == 'I' || *s == 'i') {
2008 s++; if (*s != 'N' && *s != 'n') return 0;
2009 s++; if (*s != 'I' && *s != 'i') return 0;
2010 s++; if (*s != 'T' && *s != 't') return 0;
2011 s++; if (*s != 'Y' && *s != 'y') return 0;
2012 }
2013 sawinf = 1;
2014 }
ff0cee69 2015 else
2016 return 0;
2017
300aed98
JH		 2018 if (sawinf)
2019 numtype = IS_NUMBER_INFINITY;
2020 else {
2021 /* we can have an optional exponent part */
2022 if (*s == 'e' || *s == 'E') {
2023 numtype &= ~IS_NUMBER_NEG;
2024 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
36477c24 2025 s++;
300aed98
JH		 2026 if (*s == '+' || *s == '-')
2027 s++;
2028 if (isDIGIT(*s)) {
2029 do {
2030 s++;
2031 } while (isDIGIT(*s));
2032 }
2033 else
2034 return 0;
2035 }
36477c24 2036 }
2037 while (isSPACE(*s))
2038 s++;
2039 if (s >= send)
2040 return numtype;
2041 if (len == 10 && memEQ(sbegin, "0 but true", 10))
25da4f38 2042 return IS_NUMBER_TO_INT_BY_ATOL;
36477c24 2043 return 0;
2044}
2045
79072805 2046char *
864dbfa3 2047Perl_sv_2pv_nolen(pTHX_ register SV *sv)
1fa8b10d
JD		 2048{
2049 STRLEN n_a;
2050 return sv_2pv(sv, &n_a);
2051}
2052
25da4f38 2053/* We assume that buf is at least TYPE_CHARS(UV) long. */
864dbfa3 2054static char *
25da4f38
IZ		 2055uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2056{
25da4f38
IZ		 2057 char *ptr = buf + TYPE_CHARS(UV);
2058 char *ebuf = ptr;
2059 int sign;
25da4f38
IZ		 2060
2061 if (is_uv)
2062 sign = 0;
2063 else if (iv >= 0) {
2064 uv = iv;
2065 sign = 0;
2066 } else {
2067 uv = -iv;
2068 sign = 1;
2069 }
2070 do {
2071 *--ptr = '0' + (uv % 10);
2072 } while (uv /= 10);
2073 if (sign)
2074 *--ptr = '-';
2075 *peob = ebuf;
2076 return ptr;
2077}
2078
1fa8b10d 2079char *
864dbfa3 2080Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
79072805
LW		 2081{
2082 register char *s;
2083 int olderrno;
46fc3d4c 2084 SV *tsv;
25da4f38
IZ		 2085 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2086 char *tmpbuf = tbuf;
79072805 2087
463ee0b2
LW		 2088 if (!sv) {
2089 *lp = 0;
2090 return "";
2091 }
8990e307 2092 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 2093 mg_get(sv);
2094 if (SvPOKp(sv)) {
2095 *lp = SvCUR(sv);
2096 return SvPVX(sv);
2097 }
cf2093f6 2098 if (SvIOKp(sv)) {
cf2093f6 2099 if (SvIsUV(sv))
57def98f 2100 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
cf2093f6 2101 else
57def98f 2102 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
46fc3d4c 2103 tsv = Nullsv;
a0d0e21e 2104 goto tokensave;
463ee0b2
LW		 2105 }
2106 if (SvNOKp(sv)) {
2d4389e4 2107 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
46fc3d4c 2108 tsv = Nullsv;
a0d0e21e 2109 goto tokensave;
463ee0b2 2110 }
16d20bd9 2111 if (!SvROK(sv)) {
d008e5eb 2112 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 2113 dTHR;
d008e5eb 2114 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 2115 report_uninit();
c6ee37c5 2116 }
16d20bd9
AD		 2117 *lp = 0;
2118 return "";
2119 }
463ee0b2 2120 }
ed6116ce
LW		 2121 if (SvTHINKFIRST(sv)) {
2122 if (SvROK(sv)) {
a0d0e21e
LW		 2123 SV* tmpstr;
2124 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)))
9e7bc3e8 2125 return SvPV(tmpstr,*lp);
ed6116ce
LW		 2126 sv = (SV*)SvRV(sv);
2127 if (!sv)
2128 s = "NULLREF";
2129 else {
f9277f47
IZ		 2130 MAGIC *mg;
2131
ed6116ce 2132 switch (SvTYPE(sv)) {
f9277f47
IZ		 2133 case SVt_PVMG:
2134 if ( ((SvFLAGS(sv) &
2135 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
3149a8e4 2136 == (SVs_OBJECT|SVs_RMG))
57668c4d 2137 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
f9277f47 2138 && (mg = mg_find(sv, 'r'))) {
5c0ca799 2139 dTHR;
2cd61cdb 2140 regexp *re = (regexp *)mg->mg_obj;
1bd3ad17 2141
2cd61cdb 2142 if (!mg->mg_ptr) {
8782bef2
GB		 2143 char *fptr = "msix";
2144 char reflags[6];
2145 char ch;
2146 int left = 0;
2147 int right = 4;
2148 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2149
155aba94 2150 while((ch = *fptr++)) {
8782bef2
GB		 2151 if(reganch & 1) {
2152 reflags[left++] = ch;
2153 }
2154 else {
2155 reflags[right--] = ch;
2156 }
2157 reganch >>= 1;
2158 }
2159 if(left != 4) {
2160 reflags[left] = '-';
2161 left = 5;
2162 }
2163
2164 mg->mg_len = re->prelen + 4 + left;
2165 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2166 Copy("(?", mg->mg_ptr, 2, char);
2167 Copy(reflags, mg->mg_ptr+2, left, char);
2168 Copy(":", mg->mg_ptr+left+2, 1, char);
2169 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
1bd3ad17
IZ		 2170 mg->mg_ptr[mg->mg_len - 1] = ')';
2171 mg->mg_ptr[mg->mg_len] = 0;
2172 }
3280af22 2173 PL_reginterp_cnt += re->program[0].next_off;
1bd3ad17
IZ		 2174 *lp = mg->mg_len;
2175 return mg->mg_ptr;
f9277f47
IZ		 2176 }
2177 /* Fall through */
ed6116ce
LW		 2178 case SVt_NULL:
2179 case SVt_IV:
2180 case SVt_NV:
2181 case SVt_RV:
2182 case SVt_PV:
2183 case SVt_PVIV:
2184 case SVt_PVNV:
f9277f47 2185 case SVt_PVBM: s = "SCALAR"; break;
ed6116ce
LW		 2186 case SVt_PVLV: s = "LVALUE"; break;
2187 case SVt_PVAV: s = "ARRAY"; break;
2188 case SVt_PVHV: s = "HASH"; break;
2189 case SVt_PVCV: s = "CODE"; break;
2190 case SVt_PVGV: s = "GLOB"; break;
1d2dff63 2191 case SVt_PVFM: s = "FORMAT"; break;
36477c24 2192 case SVt_PVIO: s = "IO"; break;
ed6116ce
LW		 2193 default: s = "UNKNOWN"; break;
2194 }
46fc3d4c 2195 tsv = NEWSV(0,0);
ed6116ce 2196 if (SvOBJECT(sv))
cea2e8a9 2197 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
ed6116ce 2198 else
46fc3d4c 2199 sv_setpv(tsv, s);
57def98f 2200 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
a0d0e21e 2201 goto tokensaveref;
463ee0b2 2202 }
ed6116ce
LW		 2203 *lp = strlen(s);
2204 return s;
79072805 2205 }
0336b60e
IZ		 2206 if (SvREADONLY(sv) && !SvOK(sv)) {
2207 dTHR;
2208 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 2209 report_uninit();
ed6116ce
LW		 2210 *lp = 0;
2211 return "";
79072805 2212 }
79072805 2213 }
25da4f38
IZ		 2214 if (SvNOKp(sv)) { /* See note in sv_2uv() */
2215 /* XXXX 64-bit? IV may have better precision... */
34d861e4
JH		 2216 /* I tried changing this for to be 64-bit-aware and
2217 * the t/op/numconvert.t became very, very, angry.
2218 * --jhi Sep 1999 */
79072805
LW		 2219 if (SvTYPE(sv) < SVt_PVNV)
2220 sv_upgrade(sv, SVt_PVNV);
2221 SvGROW(sv, 28);
463ee0b2 2222 s = SvPVX(sv);
79072805 2223 olderrno = errno; /* some Xenix systems wipe out errno here */
79072805 2224#ifdef apollo
463ee0b2 2225 if (SvNVX(sv) == 0.0)
79072805
LW		 2226 (void)strcpy(s,"0");
2227 else
2228#endif /*apollo*/
bbce6d69 2229 {
2d4389e4 2230 Gconvert(SvNVX(sv), NV_DIG, 0, s);
bbce6d69 2231 }
79072805 2232 errno = olderrno;
a0d0e21e
LW		 2233#ifdef FIXNEGATIVEZERO
2234 if (*s == '-' && s[1] == '0' && !s[2])
2235 strcpy(s,"0");
2236#endif
79072805
LW		 2237 while (*s) s++;
2238#ifdef hcx
2239 if (s[-1] == '.')
46fc3d4c 2240 *--s = '\0';
79072805
LW		 2241#endif
2242 }
748a9306 2243 else if (SvIOKp(sv)) {
25da4f38 2244 U32 isIOK = SvIOK(sv);
0336b60e 2245 U32 isUIOK = SvIsUV(sv);
25da4f38
IZ		 2246 char buf[TYPE_CHARS(UV)];
2247 char *ebuf, *ptr;
2248
79072805
LW		 2249 if (SvTYPE(sv) < SVt_PVIV)
2250 sv_upgrade(sv, SVt_PVIV);
0336b60e 2251 if (isUIOK)
25da4f38 2252 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
0336b60e 2253 else
25da4f38 2254 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
0336b60e
IZ		 2255 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2256 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2257 SvCUR_set(sv, ebuf - ptr);
46fc3d4c 2258 s = SvEND(sv);
0336b60e 2259 *s = '\0';
25da4f38 2260 if (isIOK)
64f14228
GA		 2261 SvIOK_on(sv);
2262 else
2263 SvIOKp_on(sv);
0336b60e
IZ		 2264 if (isUIOK)
2265 SvIsUV_on(sv);
2266 SvPOK_on(sv);
79072805
LW		 2267 }
2268 else {
11343788 2269 dTHR;
0336b60e
IZ		 2270 if (ckWARN(WARN_UNINITIALIZED)
2271 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2272 {
1d7c1841 2273 report_uninit();
0336b60e 2274 }
a0d0e21e 2275 *lp = 0;
25da4f38
IZ		 2276 if (SvTYPE(sv) < SVt_PV)
2277 /* Typically the caller expects that sv_any is not NULL now. */
2278 sv_upgrade(sv, SVt_PV);
a0d0e21e 2279 return "";
79072805 2280 }
463ee0b2
LW		 2281 *lp = s - SvPVX(sv);
2282 SvCUR_set(sv, *lp);
79072805 2283 SvPOK_on(sv);
1d7c1841
GS		 2284 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2285 PTR2UV(sv),SvPVX(sv)));
463ee0b2 2286 return SvPVX(sv);
a0d0e21e
LW		 2287
2288 tokensave:
2289 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2290 /* Sneaky stuff here */
2291
2292 tokensaveref:
46fc3d4c 2293 if (!tsv)
96827780 2294 tsv = newSVpv(tmpbuf, 0);
46fc3d4c 2295 sv_2mortal(tsv);
2296 *lp = SvCUR(tsv);
2297 return SvPVX(tsv);
a0d0e21e
LW		 2298 }
2299 else {
2300 STRLEN len;
46fc3d4c 2301 char *t;
2302
2303 if (tsv) {
2304 sv_2mortal(tsv);
2305 t = SvPVX(tsv);
2306 len = SvCUR(tsv);
2307 }
2308 else {
96827780
MB		 2309 t = tmpbuf;
2310 len = strlen(tmpbuf);
46fc3d4c 2311 }
a0d0e21e 2312#ifdef FIXNEGATIVEZERO
46fc3d4c 2313 if (len == 2 && t[0] == '-' && t[1] == '0') {
2314 t = "0";
2315 len = 1;
2316 }
a0d0e21e
LW		 2317#endif
2318 (void)SvUPGRADE(sv, SVt_PV);
46fc3d4c 2319 *lp = len;
a0d0e21e
LW		 2320 s = SvGROW(sv, len + 1);
2321 SvCUR_set(sv, len);
46fc3d4c 2322 (void)strcpy(s, t);
6bf554b4 2323 SvPOKp_on(sv);
a0d0e21e
LW		 2324 return s;
2325 }
463ee0b2
LW		 2326}
2327
7340a771
GS		 2328char *
2329Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2330{
560a288e
GS		 2331 STRLEN n_a;
2332 return sv_2pvbyte(sv, &n_a);
7340a771
GS		 2333}
2334
2335char *
2336Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2337{
2338 return sv_2pv(sv,lp);
2339}
2340
2341char *
2342Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2343{
560a288e
GS		 2344 STRLEN n_a;
2345 return sv_2pvutf8(sv, &n_a);
7340a771
GS		 2346}
2347
2348char *
2349Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2350{
560a288e 2351 sv_utf8_upgrade(sv);
7340a771
GS		 2352 return sv_2pv(sv,lp);
2353}
2354
463ee0b2
LW		 2355/* This function is only called on magical items */
2356bool
864dbfa3 2357Perl_sv_2bool(pTHX_ register SV *sv)
463ee0b2 2358{
8990e307 2359 if (SvGMAGICAL(sv))
463ee0b2
LW		 2360 mg_get(sv);
2361
a0d0e21e
LW		 2362 if (!SvOK(sv))
2363 return 0;
2364 if (SvROK(sv)) {
11343788 2365 dTHR;
a0d0e21e
LW		 2366 SV* tmpsv;
2367 if (SvAMAGIC(sv) && (tmpsv = AMG_CALLun(sv,bool_)))
9e7bc3e8 2368 return SvTRUE(tmpsv);
a0d0e21e
LW		 2369 return SvRV(sv) != 0;
2370 }
463ee0b2 2371 if (SvPOKp(sv)) {
11343788
MB		 2372 register XPV* Xpvtmp;
2373 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2374 (*Xpvtmp->xpv_pv > '0' ||
2375 Xpvtmp->xpv_cur > 1 ||
2376 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
463ee0b2
LW		 2377 return 1;
2378 else
2379 return 0;
2380 }
2381 else {
2382 if (SvIOKp(sv))
2383 return SvIVX(sv) != 0;
2384 else {
2385 if (SvNOKp(sv))
2386 return SvNVX(sv) != 0.0;
2387 else
2388 return FALSE;
2389 }
2390 }
79072805
LW		 2391}
2392
c461cf8f
JH		 2393/*
2394=for apidoc sv_utf8_upgrade
2395
2396Convert the PV of an SV to its UTF8-encoded form.
2397
2398=cut
2399*/
2400
560a288e
GS		 2401void
2402Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2403{
2404 int hicount;
2405 char *c;
2406
2407 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2408 return;
2409
2410 /* This function could be much more efficient if we had a FLAG
2411 * to signal if there are any hibit chars in the string
2412 */
2413 hicount = 0;
2414 for (c = SvPVX(sv); c < SvEND(sv); c++) {
2415 if (*c & 0x80)
2416 hicount++;
2417 }
2418
2419 if (hicount) {
2420 char *src, *dst;
2421 SvGROW(sv, SvCUR(sv) + hicount + 1);
2422
2423 src = SvEND(sv) - 1;
2424 SvCUR_set(sv, SvCUR(sv) + hicount);
2425 dst = SvEND(sv) - 1;
2426
2427 while (src < dst) {
2428 if (*src & 0x80) {
2429 dst--;
2430 uv_to_utf8((U8*)dst, (U8)*src--);
2431 dst--;
2432 }
2433 else {
2434 *dst-- = *src--;
2435 }
2436 }
2437
2438 SvUTF8_on(sv);
2439 }
2440}
2441
c461cf8f
JH		 2442/*
2443=for apidoc sv_utf8_downgrade
2444
2445Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2446This may not be possible if the PV contains non-byte encoding characters;
2447if this is the case, either returns false or, if C<fail_ok> is not
2448true, croaks.
2449
2450=cut
2451*/
2452
560a288e
GS		 2453bool
2454Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2455{
2456 if (SvPOK(sv) && SvUTF8(sv)) {
2457 char *c = SvPVX(sv);
2458 char *first_hi = 0;
2459 /* need to figure out if this is possible at all first */
2460 while (c < SvEND(sv)) {
2461 if (*c & 0x80) {
2462 I32 len;
ce32ed4b 2463 UV uv = utf8_to_uv((U8*)c, &len);
560a288e
GS		 2464 if (uv >= 256) {
2465 if (fail_ok)
2466 return FALSE;
2467 else {
2468 /* XXX might want to make a callback here instead */
9a54186f 2469 Perl_croak(aTHX_ "Big byte");
560a288e
GS		 2470 }
2471 }
2472 if (!first_hi)
2473 first_hi = c;
2474 c += len;
2475 }
2476 else {
2477 c++;
2478 }
2479 }
2480
2481 if (first_hi) {
2482 char *src = first_hi;
2483 char *dst = first_hi;
2484 while (src < SvEND(sv)) {
2485 if (*src & 0x80) {
2486 I32 len;
ce32ed4b 2487 U8 u = (U8)utf8_to_uv((U8*)src, &len);
560a288e
GS		 2488 *dst++ = u;
2489 src += len;
2490 }
2491 else {
2492 *dst++ = *src++;
2493 }
2494 }
2495 SvCUR_set(sv, dst - SvPVX(sv));
2496 }
2497 SvUTF8_off(sv);
2498 }
2499 return TRUE;
2500}
2501
c461cf8f
JH		 2502/*
2503=for apidoc sv_utf8_encode
2504
2505Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
2506flag so that it looks like bytes again. Nothing calls this.
2507
2508=cut
2509*/
2510
560a288e
GS		 2511void
2512Perl_sv_utf8_encode(pTHX_ register SV *sv)
2513{
2514 sv_utf8_upgrade(sv);
2515 SvUTF8_off(sv);
2516}
2517
2518bool
2519Perl_sv_utf8_decode(pTHX_ register SV *sv)
2520{
2521 if (SvPOK(sv)) {
2522 char *c;
2523 bool has_utf = FALSE;
2524 if (!sv_utf8_downgrade(sv, TRUE))
2525 return FALSE;
2526
2527 /* it is actually just a matter of turning the utf8 flag on, but
2528 * we want to make sure everything inside is valid utf8 first.
2529 */
2530 c = SvPVX(sv);
2531 while (c < SvEND(sv)) {
2532 if (*c & 0x80) {
2533 I32 len;
2534 (void)utf8_to_uv((U8*)c, &len);
2535 if (len == 1) {
2536 /* bad utf8 */
2537 return FALSE;
2538 }
2539 c += len;
2540 has_utf = TRUE;
2541 }
2542 else {
2543 c++;
2544 }
2545 }
2546
2547 if (has_utf)
2548 SvUTF8_on(sv);
2549 }
2550 return TRUE;
2551}
2552
2553
79072805 2554/* Note: sv_setsv() should not be called with a source string that needs
463ee0b2 2555 * to be reused, since it may destroy the source string if it is marked
79072805
LW		 2556 * as temporary.
2557 */
2558
954c1994
GS		 2559/*
2560=for apidoc sv_setsv
2561
2562Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2563The source SV may be destroyed if it is mortal. Does not handle 'set'
2564magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2565C<sv_setsv_mg>.
2566
2567=cut
2568*/
2569
79072805 2570void
864dbfa3 2571Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
79072805 2572{
11343788 2573 dTHR;
8990e307
LW		 2574 register U32 sflags;
2575 register int dtype;
2576 register int stype;
463ee0b2 2577
79072805
LW		 2578 if (sstr == dstr)
2579 return;
2213622d 2580 SV_CHECK_THINKFIRST(dstr);
79072805 2581 if (!sstr)
3280af22 2582 sstr = &PL_sv_undef;
8990e307
LW		 2583 stype = SvTYPE(sstr);
2584 dtype = SvTYPE(dstr);
79072805 2585
a0d0e21e 2586 SvAMAGIC_off(dstr);
9e7bc3e8 2587
463ee0b2 2588 /* There's a lot of redundancy below but we're going for speed here */
79072805 2589
8990e307 2590 switch (stype) {
79072805 2591 case SVt_NULL:
aece5585 2592 undef_sstr:
20408e3c
GS		 2593 if (dtype != SVt_PVGV) {
2594 (void)SvOK_off(dstr);
2595 return;
2596 }
2597 break;
463ee0b2 2598 case SVt_IV:
aece5585
GA		 2599 if (SvIOK(sstr)) {
2600 switch (dtype) {
2601 case SVt_NULL:
8990e307 2602 sv_upgrade(dstr, SVt_IV);
aece5585
GA		 2603 break;
2604 case SVt_NV:
8990e307 2605 sv_upgrade(dstr, SVt_PVNV);
aece5585
GA		 2606 break;
2607 case SVt_RV:
2608 case SVt_PV:
a0d0e21e 2609 sv_upgrade(dstr, SVt_PVIV);
aece5585
GA		 2610 break;
2611 }
2612 (void)SvIOK_only(dstr);
2613 SvIVX(dstr) = SvIVX(sstr);
25da4f38
IZ		 2614 if (SvIsUV(sstr))
2615 SvIsUV_on(dstr);
aece5585
GA		 2616 SvTAINT(dstr);
2617 return;
8990e307 2618 }
aece5585
GA		 2619 goto undef_sstr;
2620
463ee0b2 2621 case SVt_NV:
aece5585
GA		 2622 if (SvNOK(sstr)) {
2623 switch (dtype) {
2624 case SVt_NULL:
2625 case SVt_IV:
8990e307 2626 sv_upgrade(dstr, SVt_NV);
aece5585
GA		 2627 break;
2628 case SVt_RV:
2629 case SVt_PV:
2630 case SVt_PVIV:
a0d0e21e 2631 sv_upgrade(dstr, SVt_PVNV);
aece5585
GA		 2632 break;
2633 }
2634 SvNVX(dstr) = SvNVX(sstr);
2635 (void)SvNOK_only(dstr);
2636 SvTAINT(dstr);
2637 return;
8990e307 2638 }
aece5585
GA		 2639 goto undef_sstr;
2640
ed6116ce 2641 case SVt_RV:
8990e307 2642 if (dtype < SVt_RV)
ed6116ce 2643 sv_upgrade(dstr, SVt_RV);
c07a80fd 2644 else if (dtype == SVt_PVGV &&
2645 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2646 sstr = SvRV(sstr);
a5f75d66 2647 if (sstr == dstr) {
1d7c1841
GS		 2648 if (GvIMPORTED(dstr) != GVf_IMPORTED
2649 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2650 {
a5f75d66 2651 GvIMPORTED_on(dstr);
1d7c1841 2652 }
a5f75d66
AD		 2653 GvMULTI_on(dstr);
2654 return;
2655 }
c07a80fd 2656 goto glob_assign;
2657 }
ed6116ce 2658 break;
463ee0b2 2659 case SVt_PV:
fc36a67e 2660 case SVt_PVFM:
8990e307 2661 if (dtype < SVt_PV)
463ee0b2 2662 sv_upgrade(dstr, SVt_PV);
463ee0b2
LW		 2663 break;
2664 case SVt_PVIV:
8990e307 2665 if (dtype < SVt_PVIV)
463ee0b2 2666 sv_upgrade(dstr, SVt_PVIV);
463ee0b2
LW		 2667 break;
2668 case SVt_PVNV:
8990e307 2669 if (dtype < SVt_PVNV)
463ee0b2 2670 sv_upgrade(dstr, SVt_PVNV);
463ee0b2 2671 break;
4633a7c4
LW		 2672 case SVt_PVAV:
2673 case SVt_PVHV:
2674 case SVt_PVCV:
4633a7c4 2675 case SVt_PVIO:
533c011a 2676 if (PL_op)
cea2e8a9 2677 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
22c35a8c 2678 PL_op_name[PL_op->op_type]);
4633a7c4 2679 else
cea2e8a9 2680 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
4633a7c4
LW		 2681 break;
2682
79072805 2683 case SVt_PVGV:
8990e307 2684 if (dtype <= SVt_PVGV) {
c07a80fd 2685 glob_assign:
a5f75d66 2686 if (dtype != SVt_PVGV) {
a0d0e21e
LW		 2687 char *name = GvNAME(sstr);
2688 STRLEN len = GvNAMELEN(sstr);
463ee0b2 2689 sv_upgrade(dstr, SVt_PVGV);
6662521e 2690 sv_magic(dstr, dstr, '*', Nullch, 0);
85aff577 2691 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
a0d0e21e
LW		 2692 GvNAME(dstr) = savepvn(name, len);
2693 GvNAMELEN(dstr) = len;
2694 SvFAKE_on(dstr); /* can coerce to non-glob */
2695 }
7bac28a0 2696 /* ahem, death to those who redefine active sort subs */
3280af22
NIS		 2697 else if (PL_curstackinfo->si_type == PERLSI_SORT
2698 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
cea2e8a9 2699 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
7bac28a0 2700 GvNAME(dstr));
a0d0e21e 2701 (void)SvOK_off(dstr);
a5f75d66 2702 GvINTRO_off(dstr); /* one-shot flag */
1edc1566 2703 gp_free((GV*)dstr);
79072805 2704 GvGP(dstr) = gp_ref(GvGP(sstr));
8990e307 2705 SvTAINT(dstr);
1d7c1841
GS		 2706 if (GvIMPORTED(dstr) != GVf_IMPORTED
2707 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2708 {
a5f75d66 2709 GvIMPORTED_on(dstr);
1d7c1841 2710 }
a5f75d66 2711 GvMULTI_on(dstr);
79072805
LW		 2712 return;
2713 }
2714 /* FALL THROUGH */
2715
2716 default:
973f89ab
CS		 2717 if (SvGMAGICAL(sstr)) {
2718 mg_get(sstr);
2719 if (SvTYPE(sstr) != stype) {
2720 stype = SvTYPE(sstr);
2721 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2722 goto glob_assign;
2723 }
2724 }
ded42b9f 2725 if (stype == SVt_PVLV)
6fc92669 2726 (void)SvUPGRADE(dstr, SVt_PVNV);
ded42b9f 2727 else
6fc92669 2728 (void)SvUPGRADE(dstr, stype);
79072805
LW		 2729 }
2730
8990e307
LW		 2731 sflags = SvFLAGS(sstr);
2732
2733 if (sflags & SVf_ROK) {
2734 if (dtype >= SVt_PV) {
2735 if (dtype == SVt_PVGV) {
2736 SV *sref = SvREFCNT_inc(SvRV(sstr));
2737 SV *dref = 0;
a5f75d66 2738 int intro = GvINTRO(dstr);
a0d0e21e
LW		 2739
2740 if (intro) {
2741 GP *gp;
1d7c1841 2742 gp_free((GV*)dstr);
a5f75d66 2743 GvINTRO_off(dstr); /* one-shot flag */
a0d0e21e 2744 Newz(602,gp, 1, GP);
44a8e56a 2745 GvGP(dstr) = gp_ref(gp);
a0d0e21e 2746 GvSV(dstr) = NEWSV(72,0);
1d7c1841 2747 GvLINE(dstr) = CopLINE(PL_curcop);
1edc1566 2748 GvEGV(dstr) = (GV*)dstr;
a0d0e21e 2749 }
a5f75d66 2750 GvMULTI_on(dstr);
8990e307
LW		 2751 switch (SvTYPE(sref)) {
2752 case SVt_PVAV:
a0d0e21e
LW		 2753 if (intro)
2754 SAVESPTR(GvAV(dstr));
2755 else
2756 dref = (SV*)GvAV(dstr);
8990e307 2757 GvAV(dstr) = (AV*)sref;
39bac7f7 2758 if (!GvIMPORTED_AV(dstr)
1d7c1841
GS		 2759 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2760 {
a5f75d66 2761 GvIMPORTED_AV_on(dstr);
1d7c1841 2762 }
8990e307
LW		 2763 break;
2764 case SVt_PVHV:
a0d0e21e
LW		 2765 if (intro)
2766 SAVESPTR(GvHV(dstr));
2767 else
2768 dref = (SV*)GvHV(dstr);
8990e307 2769 GvHV(dstr) = (HV*)sref;
39bac7f7 2770 if (!GvIMPORTED_HV(dstr)
1d7c1841
GS		 2771 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2772 {
a5f75d66 2773 GvIMPORTED_HV_on(dstr);
1d7c1841 2774 }
8990e307
LW		 2775 break;
2776 case SVt_PVCV:
8ebc5c01 2777 if (intro) {
2778 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2779 SvREFCNT_dec(GvCV(dstr));
2780 GvCV(dstr) = Nullcv;
68dc0745 2781 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
3280af22 2782 PL_sub_generation++;
8ebc5c01 2783 }
a0d0e21e 2784 SAVESPTR(GvCV(dstr));
8ebc5c01 2785 }
68dc0745 2786 else
2787 dref = (SV*)GvCV(dstr);
2788 if (GvCV(dstr) != (CV*)sref) {
748a9306 2789 CV* cv = GvCV(dstr);
4633a7c4 2790 if (cv) {
68dc0745 2791 if (!GvCVGEN((GV*)dstr) &&
2792 (CvROOT(cv) || CvXSUB(cv)))
2793 {
fe5e78ed
GS		 2794 SV *const_sv = cv_const_sv(cv);
2795 bool const_changed = TRUE;
2796 if(const_sv)
2797 const_changed = sv_cmp(const_sv,
2798 op_const_sv(CvSTART((CV*)sref),
036b4402 2799 (CV*)sref));
7bac28a0 2800 /* ahem, death to those who redefine
2801 * active sort subs */
3280af22
NIS		 2802 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2803 PL_sortcop == CvSTART(cv))
cea2e8a9 2804 Perl_croak(aTHX_
7bac28a0 2805 "Can't redefine active sort subroutine %s",
2806 GvENAME((GV*)dstr));
036b4402 2807 if ((const_changed && const_sv) || ckWARN(WARN_REDEFINE))
e476b1b5 2808 Perl_warner(aTHX_ WARN_REDEFINE, const_sv ?
fe5e78ed
GS		 2809 "Constant subroutine %s redefined"
2810 : "Subroutine %s redefined",
2f34f9d4 2811 GvENAME((GV*)dstr));
9607fc9c 2812 }
3fe9a6f1 2813 cv_ckproto(cv, (GV*)dstr,
2814 SvPOK(sref) ? SvPVX(sref) : Nullch);
4633a7c4 2815 }
a5f75d66 2816 GvCV(dstr) = (CV*)sref;
7a4c00b4 2817 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
a5f75d66 2818 GvASSUMECV_on(dstr);
3280af22 2819 PL_sub_generation++;
a5f75d66 2820 }
39bac7f7 2821 if (!GvIMPORTED_CV(dstr)
1d7c1841
GS		 2822 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2823 {
a5f75d66 2824 GvIMPORTED_CV_on(dstr);
1d7c1841 2825 }
8990e307 2826 break;
91bba347
LW		 2827 case SVt_PVIO:
2828 if (intro)
2829 SAVESPTR(GvIOp(dstr));
2830 else
2831 dref = (SV*)GvIOp(dstr);
2832 GvIOp(dstr) = (IO*)sref;
2833 break;
f4d13ee9
JH		 2834 case SVt_PVFM:
2835 if (intro)
2836 SAVESPTR(GvFORM(dstr));
2837 else
2838 dref = (SV*)GvFORM(dstr);
2839 GvFORM(dstr) = (CV*)sref;
2840 break;
8990e307 2841 default:
a0d0e21e
LW		 2842 if (intro)
2843 SAVESPTR(GvSV(dstr));
2844 else
2845 dref = (SV*)GvSV(dstr);
8990e307 2846 GvSV(dstr) = sref;
39bac7f7 2847 if (!GvIMPORTED_SV(dstr)
1d7c1841
GS		 2848 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2849 {
a5f75d66 2850 GvIMPORTED_SV_on(dstr);
1d7c1841 2851 }
8990e307
LW		 2852 break;
2853 }
2854 if (dref)
2855 SvREFCNT_dec(dref);
a0d0e21e
LW		 2856 if (intro)
2857 SAVEFREESV(sref);
8990e307
LW		 2858 SvTAINT(dstr);
2859 return;
2860 }
a0d0e21e 2861 if (SvPVX(dstr)) {
760ac839 2862 (void)SvOOK_off(dstr); /* backoff */
50483b2c
JD		 2863 if (SvLEN(dstr))
2864 Safefree(SvPVX(dstr));
a0d0e21e
LW		 2865 SvLEN(dstr)=SvCUR(dstr)=0;
2866 }
8990e307 2867 }
a0d0e21e 2868 (void)SvOK_off(dstr);
8990e307 2869 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
ed6116ce 2870 SvROK_on(dstr);
8990e307 2871 if (sflags & SVp_NOK) {
ed6116ce
LW		 2872 SvNOK_on(dstr);
2873 SvNVX(dstr) = SvNVX(sstr);
2874 }
8990e307 2875 if (sflags & SVp_IOK) {
a0d0e21e 2876 (void)SvIOK_on(dstr);
ed6116ce 2877 SvIVX(dstr) = SvIVX(sstr);
2b1c7e3e 2878 if (sflags & SVf_IVisUV)
25da4f38 2879 SvIsUV_on(dstr);
ed6116ce 2880 }
a0d0e21e
LW		 2881 if (SvAMAGIC(sstr)) {
2882 SvAMAGIC_on(dstr);
2883 }
ed6116ce 2884 }
8990e307 2885 else if (sflags & SVp_POK) {
79072805
LW		 2886
2887 /*
2888 * Check to see if we can just swipe the string. If so, it's a
2889 * possible small lose on short strings, but a big win on long ones.
463ee0b2
LW		 2890 * It might even be a win on short strings if SvPVX(dstr)
2891 * has to be allocated and SvPVX(sstr) has to be freed.
79072805
LW		 2892 */
2893
ff68c719 2894 if (SvTEMP(sstr) && /* slated for free anyway? */
01b73108 2895 SvREFCNT(sstr) == 1 && /* and no other references to it? */
a5f75d66
AD		 2896 !(sflags & SVf_OOK)) /* and not involved in OOK hack? */
2897 {
adbc6bb1 2898 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
a5f75d66
AD		 2899 if (SvOOK(dstr)) {
2900 SvFLAGS(dstr) &= ~SVf_OOK;
2901 Safefree(SvPVX(dstr) - SvIVX(dstr));
2902 }
50483b2c 2903 else if (SvLEN(dstr))
a5f75d66 2904 Safefree(SvPVX(dstr));
79072805 2905 }
a5f75d66 2906 (void)SvPOK_only(dstr);
463ee0b2 2907 SvPV_set(dstr, SvPVX(sstr));
79072805
LW		 2908 SvLEN_set(dstr, SvLEN(sstr));
2909 SvCUR_set(dstr, SvCUR(sstr));
f4e86e0f 2910
79072805 2911 SvTEMP_off(dstr);
2b1c7e3e 2912 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
79072805
LW		 2913 SvPV_set(sstr, Nullch);
2914 SvLEN_set(sstr, 0);
a5f75d66
AD		 2915 SvCUR_set(sstr, 0);
2916 SvTEMP_off(sstr);
79072805
LW		 2917 }
2918 else { /* have to copy actual string */
8990e307
LW		 2919 STRLEN len = SvCUR(sstr);
2920
2921 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2922 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2923 SvCUR_set(dstr, len);
2924 *SvEND(dstr) = '\0';
a0d0e21e 2925 (void)SvPOK_only(dstr);
79072805 2926 }
3aa33fe5 2927 if ((sflags & SVf_UTF8) && !IN_BYTE)
a7cb1f99 2928 SvUTF8_on(dstr);
79072805 2929 /*SUPPRESS 560*/
8990e307 2930 if (sflags & SVp_NOK) {
79072805 2931 SvNOK_on(dstr);
463ee0b2 2932 SvNVX(dstr) = SvNVX(sstr);
79072805 2933 }
8990e307 2934 if (sflags & SVp_IOK) {
a0d0e21e 2935 (void)SvIOK_on(dstr);
463ee0b2 2936 SvIVX(dstr) = SvIVX(sstr);
2b1c7e3e 2937 if (sflags & SVf_IVisUV)
25da4f38 2938 SvIsUV_on(dstr);
79072805
LW		 2939 }
2940 }
8990e307 2941 else if (sflags & SVp_NOK) {
463ee0b2 2942 SvNVX(dstr) = SvNVX(sstr);
a0d0e21e 2943 (void)SvNOK_only(dstr);
2b1c7e3e 2944 if (sflags & SVf_IOK) {
a0d0e21e 2945 (void)SvIOK_on(dstr);
463ee0b2 2946 SvIVX(dstr) = SvIVX(sstr);
25da4f38 2947 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2b1c7e3e 2948 if (sflags & SVf_IVisUV)
25da4f38 2949 SvIsUV_on(dstr);
79072805
LW		 2950 }
2951 }
8990e307 2952 else if (sflags & SVp_IOK) {
a0d0e21e 2953 (void)SvIOK_only(dstr);
463ee0b2 2954 SvIVX(dstr) = SvIVX(sstr);
2b1c7e3e 2955 if (sflags & SVf_IVisUV)
25da4f38 2956 SvIsUV_on(dstr);
79072805
LW		 2957 }
2958 else {
20408e3c 2959 if (dtype == SVt_PVGV) {
e476b1b5
GS		 2960 if (ckWARN(WARN_MISC))
2961 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
20408e3c
GS		 2962 }
2963 else
2964 (void)SvOK_off(dstr);
a0d0e21e 2965 }
463ee0b2 2966 SvTAINT(dstr);
79072805
LW		 2967}
2968
954c1994
GS		 2969/*
2970=for apidoc sv_setsv_mg
2971
2972Like C<sv_setsv>, but also handles 'set' magic.
2973
2974=cut
2975*/
2976
79072805 2977void
864dbfa3 2978Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
ef50df4b
GS		 2979{
2980 sv_setsv(dstr,sstr);
2981 SvSETMAGIC(dstr);
2982}
2983
954c1994
GS		 2984/*
2985=for apidoc sv_setpvn
2986
2987Copies a string into an SV. The C<len> parameter indicates the number of
2988bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2989
2990=cut
2991*/
2992
ef50df4b 2993void
864dbfa3 2994Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
79072805 2995{
c6f8c383 2996 register char *dptr;
4561caa4
CS		 2997 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2998 elicit a warning, but it won't hurt. */
2213622d 2999 SV_CHECK_THINKFIRST(sv);
463ee0b2 3000 if (!ptr) {
a0d0e21e 3001 (void)SvOK_off(sv);
463ee0b2
LW		 3002 return;
3003 }
6fc92669 3004 (void)SvUPGRADE(sv, SVt_PV);
c6f8c383 3005
79072805 3006 SvGROW(sv, len + 1);
c6f8c383
GA		 3007 dptr = SvPVX(sv);
3008 Move(ptr,dptr,len,char);
3009 dptr[len] = '\0';
79072805 3010 SvCUR_set(sv, len);
a0d0e21e 3011 (void)SvPOK_only(sv); /* validate pointer */
463ee0b2 3012 SvTAINT(sv);
79072805
LW		 3013}
3014
954c1994
GS		 3015/*
3016=for apidoc sv_setpvn_mg
3017
3018Like C<sv_setpvn>, but also handles 'set' magic.
3019
3020=cut
3021*/
3022
79072805 3023void
864dbfa3 3024Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
ef50df4b
GS		 3025{
3026 sv_setpvn(sv,ptr,len);
3027 SvSETMAGIC(sv);
3028}
3029
954c1994
GS		 3030/*
3031=for apidoc sv_setpv
3032
3033Copies a string into an SV. The string must be null-terminated. Does not
3034handle 'set' magic. See C<sv_setpv_mg>.
3035
3036=cut
3037*/
3038
ef50df4b 3039void
864dbfa3 3040Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
79072805
LW		 3041{
3042 register STRLEN len;
3043
2213622d 3044 SV_CHECK_THINKFIRST(sv);
463ee0b2 3045 if (!ptr) {
a0d0e21e 3046 (void)SvOK_off(sv);
463ee0b2
LW		 3047 return;
3048 }
79072805 3049 len = strlen(ptr);
6fc92669 3050 (void)SvUPGRADE(sv, SVt_PV);
c6f8c383 3051
79072805 3052 SvGROW(sv, len + 1);
463ee0b2 3053 Move(ptr,SvPVX(sv),len+1,char);
79072805 3054 SvCUR_set(sv, len);
a0d0e21e 3055 (void)SvPOK_only(sv); /* validate pointer */
463ee0b2
LW		 3056 SvTAINT(sv);
3057}
3058
954c1994
GS		 3059/*
3060=for apidoc sv_setpv_mg
3061
3062Like C<sv_setpv>, but also handles 'set' magic.
3063
3064=cut
3065*/
3066
463ee0b2 3067void
864dbfa3 3068Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
ef50df4b
GS		 3069{
3070 sv_setpv(sv,ptr);
3071 SvSETMAGIC(sv);
3072}
3073
954c1994
GS		 3074/*
3075=for apidoc sv_usepvn
3076
3077Tells an SV to use C<ptr> to find its string value. Normally the string is
3078stored inside the SV but sv_usepvn allows the SV to use an outside string.
3079The C<ptr> should point to memory that was allocated by C<malloc>. The
3080string length, C<len>, must be supplied. This function will realloc the
3081memory pointed to by C<ptr>, so that pointer should not be freed or used by
3082the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3083See C<sv_usepvn_mg>.
3084
3085=cut
3086*/
3087
ef50df4b 3088void
864dbfa3 3089Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
463ee0b2 3090{
2213622d 3091 SV_CHECK_THINKFIRST(sv);
c6f8c383 3092 (void)SvUPGRADE(sv, SVt_PV);
463ee0b2 3093 if (!ptr) {
a0d0e21e 3094 (void)SvOK_off(sv);
463ee0b2
LW		 3095 return;
3096 }
a0ed51b3 3097 (void)SvOOK_off(sv);
50483b2c 3098 if (SvPVX(sv) && SvLEN(sv))
463ee0b2
LW		 3099 Safefree(SvPVX(sv));
3100 Renew(ptr, len+1, char);
3101 SvPVX(sv) = ptr;
3102 SvCUR_set(sv, len);
3103 SvLEN_set(sv, len+1);
3104 *SvEND(sv) = '\0';
a0d0e21e 3105 (void)SvPOK_only(sv); /* validate pointer */
463ee0b2 3106 SvTAINT(sv);
79072805
LW		 3107}
3108
954c1994
GS		 3109/*
3110=for apidoc sv_usepvn_mg
3111
3112Like C<sv_usepvn>, but also handles 'set' magic.
3113
3114=cut
3115*/
3116
ef50df4b 3117void
864dbfa3 3118Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
ef50df4b 3119{
51c1089b 3120 sv_usepvn(sv,ptr,len);
ef50df4b
GS		 3121 SvSETMAGIC(sv);
3122}
3123
6fc92669 3124void
864dbfa3 3125Perl_sv_force_normal(pTHX_ register SV *sv)
0f15f207 3126{
2213622d
GA		 3127 if (SvREADONLY(sv)) {
3128 dTHR;
3280af22 3129 if (PL_curcop != &PL_compiling)
cea2e8a9 3130 Perl_croak(aTHX_ PL_no_modify);
0f15f207 3131 }
2213622d
GA		 3132 if (SvROK(sv))
3133 sv_unref(sv);
6fc92669
GS		 3134 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3135 sv_unglob(sv);
0f15f207
MB		 3136}
3137
954c1994
GS		 3138/*
3139=for apidoc sv_chop
3140
3141Efficient removal of characters from the beginning of the string buffer.
3142SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3143the string buffer. The C<ptr> becomes the first character of the adjusted
3144string.
3145
3146=cut
3147*/
3148
79072805 3149void
864dbfa3 3150Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
8ac85365
NIS		 3151
3152
79072805
LW		 3153{
3154 register STRLEN delta;
3155
a0d0e21e 3156 if (!ptr || !SvPOKp(sv))
79072805 3157 return;
2213622d 3158 SV_CHECK_THINKFIRST(sv);
79072805
LW		 3159 if (SvTYPE(sv) < SVt_PVIV)
3160 sv_upgrade(sv,SVt_PVIV);
3161
3162 if (!SvOOK(sv)) {
50483b2c
JD		 3163 if (!SvLEN(sv)) { /* make copy of shared string */
3164 char *pvx = SvPVX(sv);
3165 STRLEN len = SvCUR(sv);
3166 SvGROW(sv, len + 1);
3167 Move(pvx,SvPVX(sv),len,char);
3168 *SvEND(sv) = '\0';
3169 }
463ee0b2 3170 SvIVX(sv) = 0;
79072805
LW		 3171 SvFLAGS(sv) |= SVf_OOK;
3172 }
25da4f38 3173 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
463ee0b2 3174 delta = ptr - SvPVX(sv);
79072805
LW		 3175 SvLEN(sv) -= delta;
3176 SvCUR(sv) -= delta;
463ee0b2
LW		 3177 SvPVX(sv) += delta;
3178 SvIVX(sv) += delta;
79072805
LW		 3179}
3180
954c1994
GS		 3181/*
3182=for apidoc sv_catpvn
3183
3184Concatenates the string onto the end of the string which is in the SV. The
3185C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3186'set' magic. See C<sv_catpvn_mg>.
3187
3188=cut
3189*/
3190
79072805 3191void
864dbfa3 3192Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
79072805 3193{
463ee0b2 3194 STRLEN tlen;
748a9306 3195 char *junk;
a0d0e21e 3196
748a9306 3197 junk = SvPV_force(sv, tlen);
463ee0b2 3198 SvGROW(sv, tlen + len + 1);
4633a7c4
LW		 3199 if (ptr == junk)
3200 ptr = SvPVX(sv);
463ee0b2 3201 Move(ptr,SvPVX(sv)+tlen,len,char);
79072805
LW		 3202 SvCUR(sv) += len;
3203 *SvEND(sv) = '\0';
d41ff1b8 3204 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3205 SvTAINT(sv);
79072805
LW		 3206}
3207
954c1994
GS		 3208/*
3209=for apidoc sv_catpvn_mg
3210
3211Like C<sv_catpvn>, but also handles 'set' magic.
3212
3213=cut
3214*/
3215
79072805 3216void
864dbfa3 3217Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
ef50df4b
GS		 3218{
3219 sv_catpvn(sv,ptr,len);
3220 SvSETMAGIC(sv);
3221}
3222
954c1994
GS		 3223/*
3224=for apidoc sv_catsv
3225
3226Concatenates the string from SV C<ssv> onto the end of the string in SV
3227C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3228
3229=cut
3230*/
3231
ef50df4b 3232void
864dbfa3 3233Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
79072805
LW		 3234{
3235 char *s;
463ee0b2 3236 STRLEN len;
79072805
LW		 3237 if (!sstr)
3238 return;
155aba94 3239 if ((s = SvPV(sstr, len))) {
e84ff256 3240 if (DO_UTF8(sstr)) {
560a288e 3241 sv_utf8_upgrade(dstr);
e84ff256 3242 sv_catpvn(dstr,s,len);
560a288e 3243 SvUTF8_on(dstr);
e84ff256
GS		 3244 }
3245 else
3246 sv_catpvn(dstr,s,len);
560a288e 3247 }
79072805
LW		 3248}
3249
954c1994
GS		 3250/*
3251=for apidoc sv_catsv_mg
3252
3253Like C<sv_catsv>, but also handles 'set' magic.
3254
3255=cut
3256*/
3257
79072805 3258void
864dbfa3 3259Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
ef50df4b
GS		 3260{
3261 sv_catsv(dstr,sstr);
3262 SvSETMAGIC(dstr);
3263}
3264
954c1994
GS		 3265/*
3266=for apidoc sv_catpv
3267
3268Concatenates the string onto the end of the string which is in the SV.
3269Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3270
3271=cut
3272*/
3273
ef50df4b 3274void
864dbfa3 3275Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
79072805
LW		 3276{
3277 register STRLEN len;
463ee0b2 3278 STRLEN tlen;
748a9306 3279 char *junk;
79072805 3280
79072805
LW		 3281 if (!ptr)
3282 return;
748a9306 3283 junk = SvPV_force(sv, tlen);
79072805 3284 len = strlen(ptr);
463ee0b2 3285 SvGROW(sv, tlen + len + 1);
4633a7c4
LW		 3286 if (ptr == junk)
3287 ptr = SvPVX(sv);
463ee0b2 3288 Move(ptr,SvPVX(sv)+tlen,len+1,char);
79072805 3289 SvCUR(sv) += len;
d41ff1b8 3290 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3291 SvTAINT(sv);
79072805
LW		 3292}
3293
954c1994
GS		 3294/*
3295=for apidoc sv_catpv_mg
3296
3297Like C<sv_catpv>, but also handles 'set' magic.
3298
3299=cut
3300*/
3301
ef50df4b 3302void
864dbfa3 3303Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
ef50df4b 3304{
51c1089b 3305 sv_catpv(sv,ptr);
ef50df4b
GS		 3306 SvSETMAGIC(sv);
3307}
3308
79072805 3309SV *
864dbfa3 3310Perl_newSV(pTHX_ STRLEN len)
79072805
LW		 3311{
3312 register SV *sv;
3313
4561caa4 3314 new_SV(sv);
79072805
LW		 3315 if (len) {
3316 sv_upgrade(sv, SVt_PV);
3317 SvGROW(sv, len + 1);
3318 }
3319 return sv;
3320}
3321
1edc1566 3322/* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3323
954c1994
GS		 3324/*
3325=for apidoc sv_magic
3326
3327Adds magic to an SV.
3328
3329=cut
3330*/
3331
79072805 3332void
864dbfa3 3333Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
79072805
LW		 3334{
3335 MAGIC* mg;
3336
0f15f207
MB		 3337 if (SvREADONLY(sv)) {
3338 dTHR;
3280af22 3339 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
cea2e8a9 3340 Perl_croak(aTHX_ PL_no_modify);
0f15f207 3341 }
4633a7c4 3342 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
748a9306
LW		 3343 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3344 if (how == 't')
565764a8 3345 mg->mg_len |= 1;
463ee0b2 3346 return;
748a9306 3347 }
463ee0b2
LW		 3348 }
3349 else {
c6f8c383 3350 (void)SvUPGRADE(sv, SVt_PVMG);
463ee0b2 3351 }
79072805
LW		 3352 Newz(702,mg, 1, MAGIC);
3353 mg->mg_moremagic = SvMAGIC(sv);
463ee0b2 3354
79072805 3355 SvMAGIC(sv) = mg;
c277df42 3356 if (!obj || obj == sv || how == '#' || how == 'r')
8990e307 3357 mg->mg_obj = obj;
85e6fe83 3358 else {
11343788 3359 dTHR;
8990e307 3360 mg->mg_obj = SvREFCNT_inc(obj);
85e6fe83
LW		 3361 mg->mg_flags |= MGf_REFCOUNTED;
3362 }
79072805 3363 mg->mg_type = how;
565764a8 3364 mg->mg_len = namlen;
1edc1566 3365 if (name)
3366 if (namlen >= 0)
3367 mg->mg_ptr = savepvn(name, namlen);
c6ee37c5 3368 else if (namlen == HEf_SVKEY)
1edc1566 3369 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3370
79072805
LW		 3371 switch (how) {
3372 case 0:
22c35a8c 3373 mg->mg_virtual = &PL_vtbl_sv;
79072805 3374 break;
a0d0e21e 3375 case 'A':
22c35a8c 3376 mg->mg_virtual = &PL_vtbl_amagic;
a0d0e21e
LW		 3377 break;
3378 case 'a':
22c35a8c 3379 mg->mg_virtual = &PL_vtbl_amagicelem;
a0d0e21e
LW		 3380 break;
3381 case 'c':
3382 mg->mg_virtual = 0;
3383 break;
79072805 3384 case 'B':
22c35a8c 3385 mg->mg_virtual = &PL_vtbl_bm;
79072805 3386 break;
6cef1e77 3387 case 'D':
22c35a8c 3388 mg->mg_virtual = &PL_vtbl_regdata;
6cef1e77
IZ		 3389 break;
3390 case 'd':
22c35a8c 3391 mg->mg_virtual = &PL_vtbl_regdatum;
6cef1e77 3392 break;
79072805 3393 case 'E':
22c35a8c 3394 mg->mg_virtual = &PL_vtbl_env;
79072805 3395 break;
55497cff 3396 case 'f':
22c35a8c 3397 mg->mg_virtual = &PL_vtbl_fm;
55497cff 3398 break;
79072805 3399 case 'e':
22c35a8c 3400 mg->mg_virtual = &PL_vtbl_envelem;
79072805 3401 break;
93a17b20 3402 case 'g':
22c35a8c 3403 mg->mg_virtual = &PL_vtbl_mglob;
93a17b20 3404 break;
463ee0b2 3405 case 'I':
22c35a8c 3406 mg->mg_virtual = &PL_vtbl_isa;
463ee0b2
LW		 3407 break;
3408 case 'i':
22c35a8c 3409 mg->mg_virtual = &PL_vtbl_isaelem;
463ee0b2 3410 break;
16660edb 3411 case 'k':
22c35a8c 3412 mg->mg_virtual = &PL_vtbl_nkeys;
16660edb 3413 break;
79072805 3414 case 'L':
a0d0e21e 3415 SvRMAGICAL_on(sv);
93a17b20
LW		 3416 mg->mg_virtual = 0;
3417 break;
3418 case 'l':
22c35a8c 3419 mg->mg_virtual = &PL_vtbl_dbline;
79072805 3420 break;
f93b4edd
MB		 3421#ifdef USE_THREADS
3422 case 'm':
22c35a8c 3423 mg->mg_virtual = &PL_vtbl_mutex;
f93b4edd
MB		 3424 break;
3425#endif /* USE_THREADS */
36477c24 3426#ifdef USE_LOCALE_COLLATE
bbce6d69 3427 case 'o':
22c35a8c 3428 mg->mg_virtual = &PL_vtbl_collxfrm;
bbce6d69 3429 break;
36477c24 3430#endif /* USE_LOCALE_COLLATE */
463ee0b2 3431 case 'P':
22c35a8c 3432 mg->mg_virtual = &PL_vtbl_pack;
463ee0b2
LW		 3433 break;
3434 case 'p':
a0d0e21e 3435 case 'q':
22c35a8c 3436 mg->mg_virtual = &PL_vtbl_packelem;
463ee0b2 3437 break;
c277df42 3438 case 'r':
22c35a8c 3439 mg->mg_virtual = &PL_vtbl_regexp;
c277df42 3440 break;
79072805 3441 case 'S':
22c35a8c 3442 mg->mg_virtual = &PL_vtbl_sig;
79072805
LW		 3443 break;
3444 case 's':
22c35a8c 3445 mg->mg_virtual = &PL_vtbl_sigelem;
79072805 3446 break;
463ee0b2 3447 case 't':
22c35a8c 3448 mg->mg_virtual = &PL_vtbl_taint;
565764a8 3449 mg->mg_len = 1;
463ee0b2 3450 break;
79072805 3451 case 'U':
22c35a8c 3452 mg->mg_virtual = &PL_vtbl_uvar;
79072805
LW		 3453 break;
3454 case 'v':
22c35a8c 3455 mg->mg_virtual = &PL_vtbl_vec;
79072805
LW		 3456 break;
3457 case 'x':
22c35a8c 3458 mg->mg_virtual = &PL_vtbl_substr;
79072805 3459 break;
5f05dabc 3460 case 'y':
22c35a8c 3461 mg->mg_virtual = &PL_vtbl_defelem;
5f05dabc 3462 break;
79072805 3463 case '*':
22c35a8c 3464 mg->mg_virtual = &PL_vtbl_glob;
79072805
LW		 3465 break;
3466 case '#':
22c35a8c 3467 mg->mg_virtual = &PL_vtbl_arylen;
79072805 3468 break;
a0d0e21e 3469 case '.':
22c35a8c 3470 mg->mg_virtual = &PL_vtbl_pos;
a0d0e21e 3471 break;
810b8aa5
GS		 3472 case '<':
3473 mg->mg_virtual = &PL_vtbl_backref;
3474 break;
4633a7c4
LW		 3475 case '~': /* Reserved for use by extensions not perl internals. */
3476 /* Useful for attaching extension internal data to perl vars. */
3477 /* Note that multiple extensions may clash if magical scalars */
3478 /* etc holding private data from one are passed to another. */
3479 SvRMAGICAL_on(sv);
a0d0e21e 3480 break;
79072805 3481 default:
cea2e8a9 3482 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
463ee0b2 3483 }
8990e307
LW		 3484 mg_magical(sv);
3485 if (SvGMAGICAL(sv))
3486 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
463ee0b2
LW		 3487}
3488
c461cf8f
JH		 3489/*
3490=for apidoc sv_unmagic
3491
3492Removes magic from an SV.
3493
3494=cut
3495*/
3496
463ee0b2 3497int
864dbfa3 3498Perl_sv_unmagic(pTHX_ SV *sv, int type)
463ee0b2
LW		 3499{
3500 MAGIC* mg;
3501 MAGIC** mgp;
91bba347 3502 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
463ee0b2
LW		 3503 return 0;
3504 mgp = &SvMAGIC(sv);
3505 for (mg = *mgp; mg; mg = *mgp) {
3506 if (mg->mg_type == type) {
3507 MGVTBL* vtbl = mg->mg_virtual;
3508 *mgp = mg->mg_moremagic;
1d7c1841 3509 if (vtbl && vtbl->svt_free)
fc0dc3b3 3510 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
463ee0b2 3511 if (mg->mg_ptr && mg->mg_type != 'g')
565764a8 3512 if (mg->mg_len >= 0)
1edc1566 3513 Safefree(mg->mg_ptr);
565764a8 3514 else if (mg->mg_len == HEf_SVKEY)
1edc1566 3515 SvREFCNT_dec((SV*)mg->mg_ptr);
a0d0e21e
LW		 3516 if (mg->mg_flags & MGf_REFCOUNTED)
3517 SvREFCNT_dec(mg->mg_obj);
463ee0b2
LW		 3518 Safefree(mg);
3519 }
3520 else
3521 mgp = &mg->mg_moremagic;
79072805 3522 }
91bba347 3523 if (!SvMAGIC(sv)) {
463ee0b2 3524 SvMAGICAL_off(sv);
8990e307 3525 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
463ee0b2
LW		 3526 }
3527
3528 return 0;
79072805
LW		 3529}
3530
c461cf8f
JH		 3531/*
3532=for apidoc sv_rvweaken
3533
3534Weaken a reference.
3535
3536=cut
3537*/
3538
810b8aa5 3539SV *
864dbfa3 3540Perl_sv_rvweaken(pTHX_ SV *sv)
810b8aa5
GS		 3541{
3542 SV *tsv;
3543 if (!SvOK(sv)) /* let undefs pass */
3544 return sv;
3545 if (!SvROK(sv))
cea2e8a9 3546 Perl_croak(aTHX_ "Can't weaken a nonreference");
810b8aa5
GS		 3547 else if (SvWEAKREF(sv)) {
3548 dTHR;
3549 if (ckWARN(WARN_MISC))
cea2e8a9 3550 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
810b8aa5
GS		 3551 return sv;
3552 }
3553 tsv = SvRV(sv);
3554 sv_add_backref(tsv, sv);
3555 SvWEAKREF_on(sv);
3556 SvREFCNT_dec(tsv);
3557 return sv;
3558}
3559
3560STATIC void
cea2e8a9 3561S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
810b8aa5
GS		 3562{
3563 AV *av;
3564 MAGIC *mg;
3565 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3566 av = (AV*)mg->mg_obj;
3567 else {
3568 av = newAV();
3569 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3570 SvREFCNT_dec(av); /* for sv_magic */
3571 }
3572 av_push(av,sv);
3573}
3574
3575STATIC void
cea2e8a9 3576S_sv_del_backref(pTHX_ SV *sv)
810b8aa5
GS		 3577{
3578 AV *av;
3579 SV **svp;
3580 I32 i;
3581 SV *tsv = SvRV(sv);
3582 MAGIC *mg;
3583 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
cea2e8a9 3584 Perl_croak(aTHX_ "panic: del_backref");
810b8aa5
GS		 3585 av = (AV *)mg->mg_obj;
3586 svp = AvARRAY(av);
3587 i = AvFILLp(av);
3588 while (i >= 0) {
3589 if (svp[i] == sv) {
3590 svp[i] = &PL_sv_undef; /* XXX */
3591 }
3592 i--;
3593 }
3594}
3595
954c1994
GS		 3596/*
3597=for apidoc sv_insert
3598
3599Inserts a string at the specified offset/length within the SV. Similar to
3600the Perl substr() function.
3601
3602=cut
3603*/
3604
79072805 3605void
864dbfa3 3606Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
79072805
LW		 3607{
3608 register char *big;
3609 register char *mid;
3610 register char *midend;
3611 register char *bigend;
3612 register I32 i;
6ff81951
GS		 3613 STRLEN curlen;
3614
79072805 3615
8990e307 3616 if (!bigstr)
cea2e8a9 3617 Perl_croak(aTHX_ "Can't modify non-existent substring");
6ff81951 3618 SvPV_force(bigstr, curlen);
60fa28ff 3619 (void)SvPOK_only_UTF8(bigstr);
6ff81951
GS		 3620 if (offset + len > curlen) {
3621 SvGROW(bigstr, offset+len+1);
3622 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3623 SvCUR_set(bigstr, offset+len);
3624 }
79072805 3625
69b47968 3626 SvTAINT(bigstr);
79072805
LW		 3627 i = littlelen - len;
3628 if (i > 0) { /* string might grow */
a0d0e21e 3629 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
79072805
LW		 3630 mid = big + offset + len;
3631 midend = bigend = big + SvCUR(bigstr);
3632 bigend += i;
3633 *bigend = '\0';
3634 while (midend > mid) /* shove everything down */
3635 *--bigend = *--midend;
3636 Move(little,big+offset,littlelen,char);
3637 SvCUR(bigstr) += i;
3638 SvSETMAGIC(bigstr);
3639 return;
3640 }
3641 else if (i == 0) {
463ee0b2 3642 Move(little,SvPVX(bigstr)+offset,len,char);
79072805
LW		 3643 SvSETMAGIC(bigstr);
3644 return;
3645 }
3646
463ee0b2 3647 big = SvPVX(bigstr);
79072805
LW		 3648 mid = big + offset;
3649 midend = mid + len;
3650 bigend = big + SvCUR(bigstr);
3651
3652 if (midend > bigend)
cea2e8a9 3653 Perl_croak(aTHX_ "panic: sv_insert");
79072805
LW		 3654
3655 if (mid - big > bigend - midend) { /* faster to shorten from end */
3656 if (littlelen) {
3657 Move(little, mid, littlelen,char);
3658 mid += littlelen;
3659 }
3660 i = bigend - midend;
3661 if (i > 0) {
3662 Move(midend, mid, i,char);
3663 mid += i;
3664 }
3665 *mid = '\0';
3666 SvCUR_set(bigstr, mid - big);
3667 }
3668 /*SUPPRESS 560*/
155aba94 3669 else if ((i = mid - big)) { /* faster from front */
79072805
LW		 3670 midend -= littlelen;
3671 mid = midend;
3672 sv_chop(bigstr,midend-i);
3673 big += i;
3674 while (i--)
3675 *--midend = *--big;
3676 if (littlelen)
3677 Move(little, mid, littlelen,char);
3678 }
3679 else if (littlelen) {
3680 midend -= littlelen;
3681 sv_chop(bigstr,midend);
3682 Move(little,midend,littlelen,char);
3683 }
3684 else {
3685 sv_chop(bigstr,midend);
3686 }
3687 SvSETMAGIC(bigstr);
3688}
3689
c461cf8f
JH		 3690/*
3691=for apidoc sv_replace
3692
3693Make the first argument a copy of the second, then delete the original.
3694
3695=cut
3696*/
79072805
LW		 3697
3698void
864dbfa3 3699Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
79072805 3700{
0453d815 3701 dTHR;
79072805 3702 U32 refcnt = SvREFCNT(sv);
2213622d 3703 SV_CHECK_THINKFIRST(sv);
0453d815
PM		 3704 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3705 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
93a17b20 3706 if (SvMAGICAL(sv)) {
a0d0e21e
LW		 3707 if (SvMAGICAL(nsv))
3708 mg_free(nsv);
3709 else
3710 sv_upgrade(nsv, SVt_PVMG);
93a17b20 3711 SvMAGIC(nsv) = SvMAGIC(sv);
a0d0e21e 3712 SvFLAGS(nsv) |= SvMAGICAL(sv);
93a17b20
LW		 3713 SvMAGICAL_off(sv);
3714 SvMAGIC(sv) = 0;
3715 }
79072805
LW		 3716 SvREFCNT(sv) = 0;
3717 sv_clear(sv);
477f5d66 3718 assert(!SvREFCNT(sv));
79072805
LW		 3719 StructCopy(nsv,sv,SV);
3720 SvREFCNT(sv) = refcnt;
1edc1566 3721 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
463ee0b2 3722 del_SV(nsv);
79072805
LW		 3723}
3724
c461cf8f
JH		 3725/*
3726=for apidoc sv_clear
3727
3728Clear an SV, making it empty. Does not free the memory used by the SV
3729itself.
3730
3731=cut
3732*/
3733
79072805 3734void
864dbfa3 3735Perl_sv_clear(pTHX_ register SV *sv)
79072805 3736{
ec12f114 3737 HV* stash;
79072805
LW		 3738 assert(sv);
3739 assert(SvREFCNT(sv) == 0);
3740
ed6116ce 3741 if (SvOBJECT(sv)) {
e858de61 3742 dTHR;
3280af22 3743 if (PL_defstash) { /* Still have a symbol table? */
4e35701f 3744 djSP;
8ebc5c01 3745 GV* destructor;
837485b6 3746 SV tmpref;
a0d0e21e 3747
837485b6
GS		 3748 Zero(&tmpref, 1, SV);
3749 sv_upgrade(&tmpref, SVt_RV);
3750 SvROK_on(&tmpref);
3751 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3752 SvREFCNT(&tmpref) = 1;
8ebc5c01 3753
4e8e7886
GS		 3754 do {
3755 stash = SvSTASH(sv);
3756 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3757 if (destructor) {
3758 ENTER;
e788e7d3 3759 PUSHSTACKi(PERLSI_DESTROY);
837485b6 3760 SvRV(&tmpref) = SvREFCNT_inc(sv);
4e8e7886
GS		 3761 EXTEND(SP, 2);
3762 PUSHMARK(SP);
837485b6 3763 PUSHs(&tmpref);
4e8e7886 3764 PUTBACK;
864dbfa3
GS		 3765 call_sv((SV*)GvCV(destructor),
3766 G_DISCARD|G_EVAL|G_KEEPERR);
4e8e7886 3767 SvREFCNT(sv)--;
d3acc0f7 3768 POPSTACK;
3095d977 3769 SPAGAIN;
4e8e7886
GS		 3770 LEAVE;
3771 }
3772 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
8ebc5c01 3773
837485b6 3774 del_XRV(SvANY(&tmpref));
6f44e0a4
JP		 3775
3776 if (SvREFCNT(sv)) {
3777 if (PL_in_clean_objs)
cea2e8a9 3778 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
6f44e0a4
JP		 3779 HvNAME(stash));
3780 /* DESTROY gave object new lease on life */
3781 return;
3782 }
a0d0e21e 3783 }
4e8e7886 3784
a0d0e21e 3785 if (SvOBJECT(sv)) {
4e8e7886 3786 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
a0d0e21e
LW		 3787 SvOBJECT_off(sv); /* Curse the object. */
3788 if (SvTYPE(sv) != SVt_PVIO)
3280af22 3789 --PL_sv_objcount; /* XXX Might want something more general */
a0d0e21e 3790 }
463ee0b2 3791 }
c07a80fd 3792 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
a0d0e21e 3793 mg_free(sv);
ec12f114 3794 stash = NULL;
79072805 3795 switch (SvTYPE(sv)) {
8990e307 3796 case SVt_PVIO:
df0bd2f4
GS		 3797 if (IoIFP(sv) &&
3798 IoIFP(sv) != PerlIO_stdin() &&
5f05dabc 3799 IoIFP(sv) != PerlIO_stdout() &&
3800 IoIFP(sv) != PerlIO_stderr())
93578b34 3801 {
f2b5be74 3802 io_close((IO*)sv, FALSE);
93578b34 3803 }
1d7c1841 3804 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
1236053a 3805 PerlDir_close(IoDIRP(sv));
1d7c1841 3806 IoDIRP(sv) = (DIR*)NULL;
8990e307
LW		 3807 Safefree(IoTOP_NAME(sv));
3808 Safefree(IoFMT_NAME(sv));
3809 Safefree(IoBOTTOM_NAME(sv));
a0d0e21e 3810 /* FALL THROUGH */
79072805 3811 case SVt_PVBM:
a0d0e21e 3812 goto freescalar;
79072805 3813 case SVt_PVCV:
748a9306 3814 case SVt_PVFM:
85e6fe83 3815 cv_undef((CV*)sv);
a0d0e21e 3816 goto freescalar;
79072805 3817 case SVt_PVHV:
85e6fe83 3818 hv_undef((HV*)sv);
a0d0e21e 3819 break;
79072805 3820 case SVt_PVAV:
85e6fe83 3821 av_undef((AV*)sv);
a0d0e21e 3822 break;
02270b4e
GS		 3823 case SVt_PVLV:
3824 SvREFCNT_dec(LvTARG(sv));
3825 goto freescalar;
a0d0e21e 3826 case SVt_PVGV:
1edc1566 3827 gp_free((GV*)sv);
a0d0e21e 3828 Safefree(GvNAME(sv));
ec12f114
JPC		 3829 /* cannot decrease stash refcount yet, as we might recursively delete
3830 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3831 of stash until current sv is completely gone.
3832 -- JohnPC, 27 Mar 1998 */
3833 stash = GvSTASH(sv);
a0d0e21e 3834 /* FALL THROUGH */
79072805 3835 case SVt_PVMG:
79072805
LW		 3836 case SVt_PVNV:
3837 case SVt_PVIV:
a0d0e21e
LW		 3838 freescalar:
3839 (void)SvOOK_off(sv);
79072805
LW		 3840 /* FALL THROUGH */
3841 case SVt_PV:
a0d0e21e 3842 case SVt_RV:
810b8aa5
GS		 3843 if (SvROK(sv)) {
3844 if (SvWEAKREF(sv))
3845 sv_del_backref(sv);
3846 else
3847 SvREFCNT_dec(SvRV(sv));
3848 }
1edc1566 3849 else if (SvPVX(sv) && SvLEN(sv))
463ee0b2 3850 Safefree(SvPVX(sv));
79072805 3851 break;
a0d0e21e 3852/*
79072805 3853 case SVt_NV:
79072805 3854 case SVt_IV:
79072805
LW		 3855 case SVt_NULL:
3856 break;
a0d0e21e 3857*/
79072805
LW		 3858 }
3859
3860 switch (SvTYPE(sv)) {
3861 case SVt_NULL:
3862 break;
79072805
LW		 3863 case SVt_IV:
3864 del_XIV(SvANY(sv));
3865 break;
3866 case SVt_NV:
3867 del_XNV(SvANY(sv));
3868 break;
ed6116ce
LW		 3869 case SVt_RV:
3870 del_XRV(SvANY(sv));
3871 break;
79072805
LW		 3872 case SVt_PV:
3873 del_XPV(SvANY(sv));
3874 break;
3875 case SVt_PVIV:
3876 del_XPVIV(SvANY(sv));
3877 break;
3878 case SVt_PVNV:
3879 del_XPVNV(SvANY(sv));
3880 break;
3881 case SVt_PVMG:
3882 del_XPVMG(SvANY(sv));
3883 break;
3884 case SVt_PVLV:
3885 del_XPVLV(SvANY(sv));
3886 break;
3887 case SVt_PVAV:
3888 del_XPVAV(SvANY(sv));
3889 break;
3890 case SVt_PVHV:
3891 del_XPVHV(SvANY(sv));
3892 break;
3893 case SVt_PVCV:
3894 del_XPVCV(SvANY(sv));
3895 break;
3896 case SVt_PVGV:
3897 del_XPVGV(SvANY(sv));
ec12f114
JPC		 3898 /* code duplication for increased performance. */
3899 SvFLAGS(sv) &= SVf_BREAK;
3900 SvFLAGS(sv) |= SVTYPEMASK;
3901 /* decrease refcount of the stash that owns this GV, if any */
3902 if (stash)
3903 SvREFCNT_dec(stash);
3904 return; /* not break, SvFLAGS reset already happened */
79072805
LW		 3905 case SVt_PVBM:
3906 del_XPVBM(SvANY(sv));
3907 break;
3908 case SVt_PVFM:
3909 del_XPVFM(SvANY(sv));
3910 break;
8990e307
LW		 3911 case SVt_PVIO:
3912 del_XPVIO(SvANY(sv));
3913 break;
79072805 3914 }
a0d0e21e 3915 SvFLAGS(sv) &= SVf_BREAK;
8990e307 3916 SvFLAGS(sv) |= SVTYPEMASK;
79072805
LW		 3917}
3918
3919SV *
864dbfa3 3920Perl_sv_newref(pTHX_ SV *sv)
79072805 3921{
463ee0b2 3922 if (sv)
dce16143 3923 ATOMIC_INC(SvREFCNT(sv));
79072805
LW		 3924 return sv;
3925}
3926
c461cf8f
JH		 3927/*
3928=for apidoc sv_free
3929
3930Free the memory used by an SV.
3931
3932=cut
3933*/
3934
79072805 3935void
864dbfa3 3936Perl_sv_free(pTHX_ SV *sv)
79072805 3937{
0453d815 3938 dTHR;
dce16143
MB		 3939 int refcount_is_zero;
3940
79072805
LW		 3941 if (!sv)
3942 return;
a0d0e21e
LW		 3943 if (SvREFCNT(sv) == 0) {
3944 if (SvFLAGS(sv) & SVf_BREAK)
3945 return;
3280af22 3946 if (PL_in_clean_all) /* All is fair */
1edc1566 3947 return;
d689ffdd
JP		 3948 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3949 /* make sure SvREFCNT(sv)==0 happens very seldom */
3950 SvREFCNT(sv) = (~(U32)0)/2;
3951 return;
3952 }
0453d815
PM		 3953 if (ckWARN_d(WARN_INTERNAL))
3954 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
79072805
LW		 3955 return;
3956 }
dce16143
MB		 3957 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3958 if (!refcount_is_zero)
8990e307 3959 return;
463ee0b2
LW		 3960#ifdef DEBUGGING
3961 if (SvTEMP(sv)) {
0453d815 3962 if (ckWARN_d(WARN_DEBUGGING))
f248d071 3963 Perl_warner(aTHX_ WARN_DEBUGGING,
1d7c1841
GS		 3964 "Attempt to free temp prematurely: SV 0x%"UVxf,
3965 PTR2UV(sv));
79072805 3966 return;
79072805 3967 }
463ee0b2 3968#endif
d689ffdd
JP		 3969 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3970 /* make sure SvREFCNT(sv)==0 happens very seldom */
3971 SvREFCNT(sv) = (~(U32)0)/2;
3972 return;
3973 }
79072805 3974 sv_clear(sv);
477f5d66
CS		 3975 if (! SvREFCNT(sv))
3976 del_SV(sv);
79072805
LW		 3977}
3978
954c1994
GS		 3979/*
3980=for apidoc sv_len
3981
3982Returns the length of the string in the SV. See also C<SvCUR>.
3983
3984=cut
3985*/
3986
79072805 3987STRLEN
864dbfa3 3988Perl_sv_len(pTHX_ register SV *sv)
79072805 3989{
748a9306 3990 char *junk;
463ee0b2 3991 STRLEN len;
79072805
LW		 3992
3993 if (!sv)
3994 return 0;
3995
8990e307 3996 if (SvGMAGICAL(sv))
565764a8 3997 len = mg_length(sv);
8990e307 3998 else
748a9306 3999 junk = SvPV(sv, len);
463ee0b2 4000 return len;
79072805
LW		 4001}
4002
c461cf8f
JH		 4003/*
4004=for apidoc sv_len_utf8
4005
4006Returns the number of characters in the string in an SV, counting wide
4007UTF8 bytes as a single character.
4008
4009=cut
4010*/
4011
a0ed51b3 4012STRLEN
864dbfa3 4013Perl_sv_len_utf8(pTHX_ register SV *sv)
a0ed51b3 4014{
dfe13c55
GS		 4015 U8 *s;
4016 U8 *send;
a0ed51b3
LW		 4017 STRLEN len;
4018
4019 if (!sv)
4020 return 0;
4021
4022#ifdef NOTYET
4023 if (SvGMAGICAL(sv))
4024 len = mg_length(sv);
4025 else
4026#endif
dfe13c55 4027 s = (U8*)SvPV(sv, len);
a0ed51b3
LW		 4028 send = s + len;
4029 len = 0;
4030 while (s < send) {
4031 s += UTF8SKIP(s);
4032 len++;
4033 }
4034 return len;
4035}
4036
4037void
864dbfa3 4038Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
a0ed51b3 4039{
dfe13c55
GS		 4040 U8 *start;
4041 U8 *s;
4042 U8 *send;
a0ed51b3
LW		 4043 I32 uoffset = *offsetp;
4044 STRLEN len;
4045
4046 if (!sv)
4047 return;
4048
dfe13c55 4049 start = s = (U8*)SvPV(sv, len);
a0ed51b3
LW		 4050 send = s + len;
4051 while (s < send && uoffset--)
4052 s += UTF8SKIP(s);
bb40f870
GA		 4053 if (s >= send)
4054 s = send;
a0ed51b3
LW		 4055 *offsetp = s - start;
4056 if (lenp) {
4057 I32 ulen = *lenp;
4058 start = s;
4059 while (s < send && ulen--)
4060 s += UTF8SKIP(s);
bb40f870
GA		 4061 if (s >= send)
4062 s = send;
a0ed51b3
LW		 4063 *lenp = s - start;
4064 }
4065 return;
4066}
4067
4068void
864dbfa3 4069Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
a0ed51b3 4070{
dfe13c55
GS		 4071 U8 *s;
4072 U8 *send;
a0ed51b3
LW		 4073 STRLEN len;
4074
4075 if (!sv)
4076 return;
4077
dfe13c55 4078 s = (U8*)SvPV(sv, len);
a0ed51b3 4079 if (len < *offsetp)
cea2e8a9 4080 Perl_croak(aTHX_ "panic: bad byte offset");
a0ed51b3
LW		 4081 send = s + *offsetp;
4082 len = 0;
4083 while (s < send) {
4084 s += UTF8SKIP(s);
4085 ++len;
4086 }
4087 if (s != send) {
0453d815
PM		 4088 dTHR;
4089 if (ckWARN_d(WARN_UTF8))
4090 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
a0ed51b3
LW		 4091 --len;
4092 }
4093 *offsetp = len;
4094 return;
4095}
4096
954c1994
GS		 4097/*
4098=for apidoc sv_eq
4099
4100Returns a boolean indicating whether the strings in the two SVs are
4101identical.
4102
4103=cut
4104*/
4105
79072805 4106I32
864dbfa3 4107Perl_sv_eq(pTHX_ register SV *str1, register SV *str2)
79072805
LW		 4108{
4109 char *pv1;
463ee0b2 4110 STRLEN cur1;
79072805 4111 char *pv2;
463ee0b2 4112 STRLEN cur2;
79072805
LW		 4113
4114 if (!str1) {
4115 pv1 = "";
4116 cur1 = 0;
4117 }
463ee0b2
LW		 4118 else
4119 pv1 = SvPV(str1, cur1);
79072805 4120
92d29cee
JH		 4121 if (cur1) {
4122 if (!str2)
4123 return 0;
ae3dfdc1 4124 if (SvUTF8(str1) != SvUTF8(str2) && !IN_BYTE) {
92d29cee
JH		 4125 if (SvUTF8(str1)) {
4126 sv_utf8_upgrade(str2);
4127 }
4128 else {
4129 sv_utf8_upgrade(str1);
4130 }
4131 }
4132 }
4133 pv2 = SvPV(str2, cur2);
79072805
LW		 4134
4135 if (cur1 != cur2)
4136 return 0;
4137
36477c24 4138 return memEQ(pv1, pv2, cur1);
79072805
LW		 4139}
4140
954c1994
GS		 4141/*
4142=for apidoc sv_cmp
4143
4144Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4145string in C<sv1> is less than, equal to, or greater than the string in
4146C<sv2>.
4147
4148=cut
4149*/
4150
79072805 4151I32
864dbfa3 4152Perl_sv_cmp(pTHX_ register SV *str1, register SV *str2)
79072805 4153{
560a288e
GS		 4154 STRLEN cur1, cur2;
4155 char *pv1, *pv2;
79072805 4156 I32 retval;
560a288e
GS		 4157
4158 if (str1) {
4159 pv1 = SvPV(str1, cur1);
4160 }
4161 else {
4162 cur1 = 0;
4163 }
4164
4165 if (str2) {
4166 if (SvPOK(str2)) {
4167 if (SvPOK(str1) && SvUTF8(str1) != SvUTF8(str2) && !IN_BYTE) {
4168 /* must upgrade other to UTF8 first */
4169 if (SvUTF8(str1)) {
4170 sv_utf8_upgrade(str2);
4171 }
4172 else {
4173 sv_utf8_upgrade(str1);
4174 /* refresh pointer and length */
4175 pv1 = SvPVX(str1);
4176 cur1 = SvCUR(str1);
4177 }
4178 }
4179 pv2 = SvPVX(str2);
4180 cur2 = SvCUR(str2);
4181 }
4182 else {
4183 pv2 = sv_2pv(str2, &cur2);
4184 }
4185 }
4186 else {
4187 cur2 = 0;
4188 }
79072805 4189
bbce6d69 4190 if (!cur1)
4191 return cur2 ? -1 : 0;
16660edb 4192
bbce6d69 4193 if (!cur2)
4194 return 1;
79072805 4195
bbce6d69 4196 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
16660edb 4197
bbce6d69 4198 if (retval)
4199 return retval < 0 ? -1 : 1;
16660edb 4200
bbce6d69 4201 if (cur1 == cur2)
4202 return 0;
4203 else
4204 return cur1 < cur2 ? -1 : 1;
4205}
16660edb 4206
c461cf8f
JH		 4207/*
4208=for apidoc sv_cmp_locale
4209
4210Compares the strings in two SVs in a locale-aware manner. See
4211L</sv_cmp_locale>
4212
4213=cut
4214*/
4215
bbce6d69 4216I32
864dbfa3 4217Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
bbce6d69 4218{
36477c24 4219#ifdef USE_LOCALE_COLLATE
16660edb 4220
bbce6d69 4221 char *pv1, *pv2;
4222 STRLEN len1, len2;
4223 I32 retval;
16660edb 4224
3280af22 4225 if (PL_collation_standard)
bbce6d69 4226 goto raw_compare;
16660edb 4227
bbce6d69 4228 len1 = 0;
8ac85365 4229 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
bbce6d69 4230 len2 = 0;
8ac85365 4231 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
16660edb 4232
bbce6d69 4233 if (!pv1 || !len1) {
4234 if (pv2 && len2)
4235 return -1;
4236 else
4237 goto raw_compare;
4238 }
4239 else {
4240 if (!pv2 || !len2)
4241 return 1;
4242 }
16660edb 4243
bbce6d69 4244 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
16660edb 4245
bbce6d69 4246 if (retval)
16660edb 4247 return retval < 0 ? -1 : 1;
4248
bbce6d69 4249 /*
4250 * When the result of collation is equality, that doesn't mean
4251 * that there are no differences -- some locales exclude some
4252 * characters from consideration. So to avoid false equalities,
4253 * we use the raw string as a tiebreaker.
4254 */
16660edb 4255
bbce6d69 4256 raw_compare:
4257 /* FALL THROUGH */
16660edb 4258
36477c24 4259#endif /* USE_LOCALE_COLLATE */
16660edb 4260
bbce6d69 4261 return sv_cmp(sv1, sv2);
4262}
79072805 4263
36477c24 4264#ifdef USE_LOCALE_COLLATE
7a4c00b4 4265/*
4266 * Any scalar variable may carry an 'o' magic that contains the
4267 * scalar data of the variable transformed to such a format that
4268 * a normal memory comparison can be used to compare the data
4269 * according to the locale settings.
4270 */
bbce6d69 4271char *
864dbfa3 4272Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
bbce6d69 4273{
7a4c00b4 4274 MAGIC *mg;
16660edb 4275
8ac85365 4276 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
3280af22 4277 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
bbce6d69 4278 char *s, *xf;
4279 STRLEN len, xlen;
4280
7a4c00b4 4281 if (mg)
4282 Safefree(mg->mg_ptr);
bbce6d69 4283 s = SvPV(sv, len);
4284 if ((xf = mem_collxfrm(s, len, &xlen))) {
ff0cee69 4285 if (SvREADONLY(sv)) {
4286 SAVEFREEPV(xf);
4287 *nxp = xlen;
3280af22 4288 return xf + sizeof(PL_collation_ix);
ff0cee69 4289 }
7a4c00b4 4290 if (! mg) {
4291 sv_magic(sv, 0, 'o', 0, 0);
4292 mg = mg_find(sv, 'o');
4293 assert(mg);
bbce6d69 4294 }
7a4c00b4 4295 mg->mg_ptr = xf;
565764a8 4296 mg->mg_len = xlen;
7a4c00b4 4297 }
4298 else {
ff0cee69 4299 if (mg) {
4300 mg->mg_ptr = NULL;
565764a8 4301 mg->mg_len = -1;
ff0cee69 4302 }
bbce6d69 4303 }
4304 }
7a4c00b4 4305 if (mg && mg->mg_ptr) {
565764a8 4306 *nxp = mg->mg_len;
3280af22 4307 return mg->mg_ptr + sizeof(PL_collation_ix);
bbce6d69 4308 }
4309 else {
4310 *nxp = 0;
4311 return NULL;
16660edb 4312 }
79072805
LW		 4313}
4314
36477c24 4315#endif /* USE_LOCALE_COLLATE */
bbce6d69 4316
c461cf8f
JH		 4317/*
4318=for apidoc sv_gets
4319
4320Get a line from the filehandle and store it into the SV, optionally
4321appending to the currently-stored string.
4322
4323=cut
4324*/
4325
79072805 4326char *
864dbfa3 4327Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
79072805 4328{
aeea060c 4329 dTHR;
c07a80fd 4330 char *rsptr;
4331 STRLEN rslen;
4332 register STDCHAR rslast;
4333 register STDCHAR *bp;
4334 register I32 cnt;
4335 I32 i;
4336
2213622d 4337 SV_CHECK_THINKFIRST(sv);
6fc92669 4338 (void)SvUPGRADE(sv, SVt_PV);
99491443 4339
ff68c719 4340 SvSCREAM_off(sv);
c07a80fd 4341
3280af22 4342 if (RsSNARF(PL_rs)) {
c07a80fd 4343 rsptr = NULL;
4344 rslen = 0;
4345 }
3280af22 4346 else if (RsRECORD(PL_rs)) {
5b2b9c68
HM		 4347 I32 recsize, bytesread;
4348 char *buffer;
4349
4350 /* Grab the size of the record we're getting */
3280af22 4351 recsize = SvIV(SvRV(PL_rs));
5b2b9c68 4352 (void)SvPOK_only(sv); /* Validate pointer */
e670df4e 4353 buffer = SvGROW(sv, recsize + 1);
5b2b9c68
HM		 4354 /* Go yank in */
4355#ifdef VMS
4356 /* VMS wants read instead of fread, because fread doesn't respect */
4357 /* RMS record boundaries. This is not necessarily a good thing to be */
4358 /* doing, but we've got no other real choice */
4359 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4360#else
4361 bytesread = PerlIO_read(fp, buffer, recsize);
4362#endif
4363 SvCUR_set(sv, bytesread);
e670df4e 4364 buffer[bytesread] = '\0';
5b2b9c68
HM		 4365 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4366 }
3280af22 4367 else if (RsPARA(PL_rs)) {
c07a80fd 4368 rsptr = "\n\n";
4369 rslen = 2;
4370 }
4371 else
3280af22 4372 rsptr = SvPV(PL_rs, rslen);
c07a80fd 4373 rslast = rslen ? rsptr[rslen - 1] : '\0';
4374
3280af22 4375 if (RsPARA(PL_rs)) { /* have to do this both before and after */
79072805 4376 do { /* to make sure file boundaries work right */
760ac839 4377 if (PerlIO_eof(fp))
a0d0e21e 4378 return 0;
760ac839 4379 i = PerlIO_getc(fp);
79072805 4380 if (i != '\n') {
a0d0e21e
LW		 4381 if (i == -1)
4382 return 0;
760ac839 4383 PerlIO_ungetc(fp,i);
79072805
LW		 4384 break;
4385 }
4386 } while (i != EOF);
4387 }
c07a80fd 4388
760ac839
LW		 4389 /* See if we know enough about I/O mechanism to cheat it ! */
4390
4391 /* This used to be #ifdef test - it is made run-time test for ease
4392 of abstracting out stdio interface. One call should be cheap
4393 enough here - and may even be a macro allowing compile
4394 time optimization.
4395 */
4396
4397 if (PerlIO_fast_gets(fp)) {
4398
4399 /*
4400 * We're going to steal some values from the stdio struct
4401 * and put EVERYTHING in the innermost loop into registers.
4402 */
4403 register STDCHAR *ptr;
4404 STRLEN bpx;
4405 I32 shortbuffered;
4406
16660edb 4407#if defined(VMS) && defined(PERLIO_IS_STDIO)
4408 /* An ungetc()d char is handled separately from the regular
4409 * buffer, so we getc() it back out and stuff it in the buffer.
4410 */
4411 i = PerlIO_getc(fp);
4412 if (i == EOF) return 0;
4413 *(--((*fp)->_ptr)) = (unsigned char) i;
4414 (*fp)->_cnt++;
4415#endif
c07a80fd 4416
c2960299 4417 /* Here is some breathtakingly efficient cheating */
c07a80fd 4418
a20bf0c3 4419 cnt = PerlIO_get_cnt(fp); /* get count into register */
a0d0e21e 4420 (void)SvPOK_only(sv); /* validate pointer */
79072805
LW		 4421 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4422 if (cnt > 80 && SvLEN(sv) > append) {
4423 shortbuffered = cnt - SvLEN(sv) + append + 1;
4424 cnt -= shortbuffered;
4425 }
4426 else {
4427 shortbuffered = 0;
bbce6d69 4428 /* remember that cnt can be negative */
4429 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
79072805
LW		 4430 }
4431 }
4432 else
4433 shortbuffered = 0;
c07a80fd 4434 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
a20bf0c3 4435 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
16660edb 4436 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4437 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
16660edb 4438 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841
GS		 4439 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4440 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4441 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
79072805
LW		 4442 for (;;) {
4443 screamer:
93a17b20 4444 if (cnt > 0) {
c07a80fd 4445 if (rslen) {
760ac839
LW		 4446 while (cnt > 0) { /* this | eat */
4447 cnt--;
c07a80fd 4448 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4449 goto thats_all_folks; /* screams | sed :-) */
4450 }
4451 }
4452 else {
36477c24 4453 Copy(ptr, bp, cnt, char); /* this | eat */
c07a80fd 4454 bp += cnt; /* screams | dust */
4455 ptr += cnt; /* louder | sed :-) */
a5f75d66 4456 cnt = 0;
93a17b20 4457 }
79072805
LW		 4458 }
4459
748a9306 4460 if (shortbuffered) { /* oh well, must extend */
79072805
LW		 4461 cnt = shortbuffered;
4462 shortbuffered = 0;
c07a80fd 4463 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
79072805
LW		 4464 SvCUR_set(sv, bpx);
4465 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
c07a80fd 4466 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
79072805
LW		 4467 continue;
4468 }
4469
16660edb 4470 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841
GS		 4471 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4472 PTR2UV(ptr),(long)cnt));
a20bf0c3 4473 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
16660edb 4474 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841
GS		 4475 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4476 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4477 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
16660edb 4478 /* This used to call 'filbuf' in stdio form, but as that behaves like
774d564b 4479 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4480 another abstraction. */
760ac839 4481 i = PerlIO_getc(fp); /* get more characters */
16660edb 4482 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841
GS		 4483 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4484 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4485 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
a20bf0c3
JH		 4486 cnt = PerlIO_get_cnt(fp);
4487 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
16660edb 4488 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4489 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
79072805 4490
748a9306
LW		 4491 if (i == EOF) /* all done for ever? */
4492 goto thats_really_all_folks;
4493
c07a80fd 4494 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
79072805
LW		 4495 SvCUR_set(sv, bpx);
4496 SvGROW(sv, bpx + cnt + 2);
c07a80fd 4497 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4498
760ac839 4499 *bp++ = i; /* store character from PerlIO_getc */
79072805 4500
c07a80fd 4501 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
79072805 4502 goto thats_all_folks;
79072805
LW		 4503 }
4504
4505thats_all_folks:
c07a80fd 4506 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
36477c24 4507 memNE((char*)bp - rslen, rsptr, rslen))
760ac839 4508 goto screamer; /* go back to the fray */
79072805
LW		 4509thats_really_all_folks:
4510 if (shortbuffered)
4511 cnt += shortbuffered;
16660edb 4512 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4513 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
a20bf0c3 4514 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
16660edb 4515 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841
GS		 4516 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4517 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4518 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
79072805 4519 *bp = '\0';
760ac839 4520 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
16660edb 4521 DEBUG_P(PerlIO_printf(Perl_debug_log,
fb73857a 4522 "Screamer: done, len=%ld, string=|%.*s|\n",
4523 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
760ac839
LW		 4524 }
4525 else
79072805 4526 {
4d2c4e07 4527#ifndef EPOC
760ac839 4528 /*The big, slow, and stupid way */
c07a80fd 4529 STDCHAR buf[8192];
4d2c4e07
OF		 4530#else
4531 /* Need to work around EPOC SDK features */
4532 /* On WINS: MS VC5 generates calls to _chkstk, */
4533 /* if a `large' stack frame is allocated */
4534 /* gcc on MARM does not generate calls like these */
4535 STDCHAR buf[1024];
4536#endif
79072805 4537
760ac839 4538screamer2:
c07a80fd 4539 if (rslen) {
760ac839
LW		 4540 register STDCHAR *bpe = buf + sizeof(buf);
4541 bp = buf;
4542 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4543 ; /* keep reading */
4544 cnt = bp - buf;
c07a80fd 4545 }
4546 else {
760ac839 4547 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
16660edb 4548 /* Accomodate broken VAXC compiler, which applies U8 cast to
4549 * both args of ?: operator, causing EOF to change into 255
4550 */
4551 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
c07a80fd 4552 }
79072805
LW		 4553
4554 if (append)
760ac839 4555 sv_catpvn(sv, (char *) buf, cnt);
79072805 4556 else
760ac839 4557 sv_setpvn(sv, (char *) buf, cnt);
c07a80fd 4558
4559 if (i != EOF && /* joy */
4560 (!rslen ||
4561 SvCUR(sv) < rslen ||
36477c24 4562 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
79072805
LW		 4563 {
4564 append = -1;
63e4d877
CS		 4565 /*
4566 * If we're reading from a TTY and we get a short read,
4567 * indicating that the user hit his EOF character, we need
4568 * to notice it now, because if we try to read from the TTY
4569 * again, the EOF condition will disappear.
4570 *
4571 * The comparison of cnt to sizeof(buf) is an optimization
4572 * that prevents unnecessary calls to feof().
4573 *
4574 * - jik 9/25/96
4575 */
4576 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4577 goto screamer2;
79072805
LW		 4578 }
4579 }
4580
3280af22 4581 if (RsPARA(PL_rs)) { /* have to do this both before and after */
c07a80fd 4582 while (i != EOF) { /* to make sure file boundaries work right */
760ac839 4583 i = PerlIO_getc(fp);
79072805 4584 if (i != '\n') {
760ac839 4585 PerlIO_ungetc(fp,i);
79072805
LW		 4586 break;
4587 }
4588 }
4589 }
c07a80fd 4590
4591 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
79072805
LW		 4592}
4593
760ac839 4594
954c1994
GS		 4595/*
4596=for apidoc sv_inc
4597
4598Auto-increment of the value in the SV.
4599
4600=cut
4601*/
4602
79072805 4603void
864dbfa3 4604Perl_sv_inc(pTHX_ register SV *sv)
79072805
LW		 4605{
4606 register char *d;
463ee0b2 4607 int flags;
79072805
LW		 4608
4609 if (!sv)
4610 return;
b23a5f78
GB		 4611 if (SvGMAGICAL(sv))
4612 mg_get(sv);
ed6116ce 4613 if (SvTHINKFIRST(sv)) {
0f15f207
MB		 4614 if (SvREADONLY(sv)) {
4615 dTHR;
3280af22 4616 if (PL_curcop != &PL_compiling)
cea2e8a9 4617 Perl_croak(aTHX_ PL_no_modify);
0f15f207 4618 }
a0d0e21e 4619 if (SvROK(sv)) {
b5be31e9 4620 IV i;
9e7bc3e8
JD		 4621 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4622 return;
56431972 4623 i = PTR2IV(SvRV(sv));
b5be31e9
SM		 4624 sv_unref(sv);
4625 sv_setiv(sv, i);
a0d0e21e 4626 }
ed6116ce 4627 }
8990e307 4628 flags = SvFLAGS(sv);
8990e307 4629 if (flags & SVp_NOK) {
a0d0e21e 4630 (void)SvNOK_only(sv);
55497cff 4631 SvNVX(sv) += 1.0;
4632 return;
4633 }
4634 if (flags & SVp_IOK) {
25da4f38
IZ		 4635 if (SvIsUV(sv)) {
4636 if (SvUVX(sv) == UV_MAX)
65202027 4637 sv_setnv(sv, (NV)UV_MAX + 1.0);
25da4f38
IZ		 4638 else
4639 (void)SvIOK_only_UV(sv);
4640 ++SvUVX(sv);
4641 } else {
4642 if (SvIVX(sv) == IV_MAX)
65202027 4643 sv_setnv(sv, (NV)IV_MAX + 1.0);
25da4f38
IZ		 4644 else {
4645 (void)SvIOK_only(sv);
4646 ++SvIVX(sv);
4647 }
55497cff 4648 }
79072805
LW		 4649 return;
4650 }
8990e307 4651 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4633a7c4
LW		 4652 if ((flags & SVTYPEMASK) < SVt_PVNV)
4653 sv_upgrade(sv, SVt_NV);
463ee0b2 4654 SvNVX(sv) = 1.0;
a0d0e21e 4655 (void)SvNOK_only(sv);
79072805
LW		 4656 return;
4657 }
463ee0b2 4658 d = SvPVX(sv);
79072805
LW		 4659 while (isALPHA(*d)) d++;
4660 while (isDIGIT(*d)) d++;
4661 if (*d) {
097ee67d 4662 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
79072805
LW		 4663 return;
4664 }
4665 d--;
463ee0b2 4666 while (d >= SvPVX(sv)) {
79072805
LW		 4667 if (isDIGIT(*d)) {
4668 if (++*d <= '9')
4669 return;
4670 *(d--) = '0';
4671 }
4672 else {
9d116dd7
JH		 4673#ifdef EBCDIC
4674 /* MKS: The original code here died if letters weren't consecutive.
4675 * at least it didn't have to worry about non-C locales. The
4676 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4677 * arranged in order (although not consecutively) and that only
4678 * [A-Za-z] are accepted by isALPHA in the C locale.
4679 */
4680 if (*d != 'z' && *d != 'Z') {
4681 do { ++*d; } while (!isALPHA(*d));
4682 return;
4683 }
4684 *(d--) -= 'z' - 'a';
4685#else
79072805
LW		 4686 ++*d;
4687 if (isALPHA(*d))
4688 return;
4689 *(d--) -= 'z' - 'a' + 1;
9d116dd7 4690#endif
79072805
LW		 4691 }
4692 }
4693 /* oh,oh, the number grew */
4694 SvGROW(sv, SvCUR(sv) + 2);
4695 SvCUR(sv)++;
463ee0b2 4696 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
79072805
LW		 4697 *d = d[-1];
4698 if (isDIGIT(d[1]))
4699 *d = '1';
4700 else
4701 *d = d[1];
4702}
4703
954c1994
GS		 4704/*
4705=for apidoc sv_dec
4706
4707Auto-decrement of the value in the SV.
4708
4709=cut
4710*/
4711
79072805 4712void
864dbfa3 4713Perl_sv_dec(pTHX_ register SV *sv)
79072805 4714{
463ee0b2
LW		 4715 int flags;
4716
79072805
LW		 4717 if (!sv)
4718 return;
b23a5f78
GB		 4719 if (SvGMAGICAL(sv))
4720 mg_get(sv);
ed6116ce 4721 if (SvTHINKFIRST(sv)) {
0f15f207
MB		 4722 if (SvREADONLY(sv)) {
4723 dTHR;
3280af22 4724 if (PL_curcop != &PL_compiling)
cea2e8a9 4725 Perl_croak(aTHX_ PL_no_modify);
0f15f207 4726 }
a0d0e21e 4727 if (SvROK(sv)) {
b5be31e9 4728 IV i;
9e7bc3e8
JD		 4729 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4730 return;
56431972 4731 i = PTR2IV(SvRV(sv));
b5be31e9
SM		 4732 sv_unref(sv);
4733 sv_setiv(sv, i);
a0d0e21e 4734 }
ed6116ce 4735 }
8990e307 4736 flags = SvFLAGS(sv);
8990e307 4737 if (flags & SVp_NOK) {
463ee0b2 4738 SvNVX(sv) -= 1.0;
a0d0e21e 4739 (void)SvNOK_only(sv);
79072805
LW		 4740 return;
4741 }
55497cff 4742 if (flags & SVp_IOK) {
25da4f38
IZ		 4743 if (SvIsUV(sv)) {
4744 if (SvUVX(sv) == 0) {
4745 (void)SvIOK_only(sv);
4746 SvIVX(sv) = -1;
4747 }
4748 else {
4749 (void)SvIOK_only_UV(sv);
4750 --SvUVX(sv);
4751 }
4752 } else {
4753 if (SvIVX(sv) == IV_MIN)
65202027 4754 sv_setnv(sv, (NV)IV_MIN - 1.0);
25da4f38
IZ		 4755 else {
4756 (void)SvIOK_only(sv);
4757 --SvIVX(sv);
4758 }
55497cff 4759 }
4760 return;
4761 }
8990e307 4762 if (!(flags & SVp_POK)) {
4633a7c4
LW		 4763 if ((flags & SVTYPEMASK) < SVt_PVNV)
4764 sv_upgrade(sv, SVt_NV);
463ee0b2 4765 SvNVX(sv) = -1.0;
a0d0e21e 4766 (void)SvNOK_only(sv);
79072805
LW		 4767 return;
4768 }
097ee67d 4769 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
79072805
LW		 4770}
4771
954c1994
GS		 4772/*
4773=for apidoc sv_mortalcopy
4774
4775Creates a new SV which is a copy of the original SV. The new SV is marked
4776as mortal.
4777
4778=cut
4779*/
4780
79072805
LW		 4781/* Make a string that will exist for the duration of the expression
4782 * evaluation. Actually, it may have to last longer than that, but
4783 * hopefully we won't free it until it has been assigned to a
4784 * permanent location. */
4785
4786SV *
864dbfa3 4787Perl_sv_mortalcopy(pTHX_ SV *oldstr)
79072805 4788{
11343788 4789 dTHR;
463ee0b2 4790 register SV *sv;
79072805 4791
4561caa4 4792 new_SV(sv);
79072805 4793 sv_setsv(sv,oldstr);
677b06e3
GS		 4794 EXTEND_MORTAL(1);
4795 PL_tmps_stack[++PL_tmps_ix] = sv;
8990e307
LW		 4796 SvTEMP_on(sv);
4797 return sv;
4798}
4799
954c1994
GS		 4800/*
4801=for apidoc sv_newmortal
4802
4803Creates a new SV which is mortal. The reference count of the SV is set to 1.
4804
4805=cut
4806*/
4807
8990e307 4808SV *
864dbfa3 4809Perl_sv_newmortal(pTHX)
8990e307 4810{
11343788 4811 dTHR;
8990e307
LW		 4812 register SV *sv;
4813
4561caa4 4814 new_SV(sv);
8990e307 4815 SvFLAGS(sv) = SVs_TEMP;
677b06e3
GS		 4816 EXTEND_MORTAL(1);
4817 PL_tmps_stack[++PL_tmps_ix] = sv;
79072805
LW		 4818 return sv;
4819}
4820
954c1994
GS		 4821/*
4822=for apidoc sv_2mortal
4823
4824Marks an SV as mortal. The SV will be destroyed when the current context
4825ends.
4826
4827=cut
4828*/
4829
79072805
LW		 4830/* same thing without the copying */
4831
4832SV *
864dbfa3 4833Perl_sv_2mortal(pTHX_ register SV *sv)
79072805 4834{
11343788 4835 dTHR;
79072805
LW		 4836 if (!sv)
4837 return sv;
d689ffdd 4838 if (SvREADONLY(sv) && SvIMMORTAL(sv))
11162842 4839 return sv;
677b06e3
GS		 4840 EXTEND_MORTAL(1);
4841 PL_tmps_stack[++PL_tmps_ix] = sv;
8990e307 4842 SvTEMP_on(sv);
79072805
LW		 4843 return sv;
4844}
4845
954c1994
GS		 4846/*
4847=for apidoc newSVpv
4848
4849Creates a new SV and copies a string into it. The reference count for the
4850SV is set to 1. If C<len> is zero, Perl will compute the length using
4851strlen(). For efficiency, consider using C<newSVpvn> instead.
4852
4853=cut
4854*/
4855
79072805 4856SV *
864dbfa3 4857Perl_newSVpv(pTHX_ const char *s, STRLEN len)
79072805 4858{
463ee0b2 4859 register SV *sv;
79072805 4860
4561caa4 4861 new_SV(sv);
79072805
LW		 4862 if (!len)
4863 len = strlen(s);
4864 sv_setpvn(sv,s,len);
4865 return sv;
4866}
4867
954c1994
GS		 4868/*
4869=for apidoc newSVpvn
4870
4871Creates a new SV and copies a string into it. The reference count for the
4872SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4873string. You are responsible for ensuring that the source string is at least
4874C<len> bytes long.
4875
4876=cut
4877*/
4878
9da1e3b5 4879SV *
864dbfa3 4880Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
9da1e3b5
MUN		 4881{
4882 register SV *sv;
4883
4884 new_SV(sv);
9da1e3b5
MUN		 4885 sv_setpvn(sv,s,len);
4886 return sv;
4887}
4888
cea2e8a9 4889#if defined(PERL_IMPLICIT_CONTEXT)
46fc3d4c 4890SV *
cea2e8a9 4891Perl_newSVpvf_nocontext(const char* pat, ...)
46fc3d4c 4892{
cea2e8a9 4893 dTHX;
46fc3d4c 4894 register SV *sv;
4895 va_list args;
46fc3d4c 4896 va_start(args, pat);
c5be433b 4897 sv = vnewSVpvf(pat, &args);
46fc3d4c 4898 va_end(args);
4899 return sv;
4900}
cea2e8a9 4901#endif
46fc3d4c 4902
954c1994
GS		 4903/*
4904=for apidoc newSVpvf
4905
4906Creates a new SV an initialize it with the string formatted like
4907C<sprintf>.
4908
4909=cut
4910*/
4911
cea2e8a9
GS		 4912SV *
4913Perl_newSVpvf(pTHX_ const char* pat, ...)
4914{
4915 register SV *sv;
4916 va_list args;
cea2e8a9 4917 va_start(args, pat);
c5be433b 4918 sv = vnewSVpvf(pat, &args);
cea2e8a9
GS		 4919 va_end(args);
4920 return sv;
4921}
46fc3d4c 4922
79072805 4923SV *
c5be433b
GS		 4924Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4925{
4926 register SV *sv;
4927 new_SV(sv);
4928 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4929 return sv;
4930}
4931
954c1994
GS		 4932/*
4933=for apidoc newSVnv
4934
4935Creates a new SV and copies a floating point value into it.
4936The reference count for the SV is set to 1.
4937
4938=cut
4939*/
4940
c5be433b 4941SV *
65202027 4942Perl_newSVnv(pTHX_ NV n)
79072805 4943{
463ee0b2 4944 register SV *sv;
79072805 4945
4561caa4 4946 new_SV(sv);
79072805
LW		 4947 sv_setnv(sv,n);
4948 return sv;
4949}
4950
954c1994
GS		 4951/*
4952=for apidoc newSViv
4953
4954Creates a new SV and copies an integer into it. The reference count for the
4955SV is set to 1.
4956
4957=cut
4958*/
4959
79072805 4960SV *
864dbfa3 4961Perl_newSViv(pTHX_ IV i)
79072805 4962{
463ee0b2 4963 register SV *sv;
79072805 4964
4561caa4 4965 new_SV(sv);
79072805
LW		 4966 sv_setiv(sv,i);
4967 return sv;
4968}
4969
954c1994 4970/*
1a3327fb
JH		 4971=for apidoc newSVuv
4972
4973Creates a new SV and copies an unsigned integer into it.
4974The reference count for the SV is set to 1.
4975
4976=cut
4977*/
4978
4979SV *
4980Perl_newSVuv(pTHX_ UV u)
4981{
4982 register SV *sv;
4983
4984 new_SV(sv);
4985 sv_setuv(sv,u);
4986 return sv;
4987}
4988
4989/*
954c1994
GS		 4990=for apidoc newRV_noinc
4991
4992Creates an RV wrapper for an SV. The reference count for the original
4993SV is B<not> incremented.
4994
4995=cut
4996*/
4997
2304df62 4998SV *
864dbfa3 4999Perl_newRV_noinc(pTHX_ SV *tmpRef)
2304df62 5000{
11343788 5001 dTHR;
2304df62
AD		 5002 register SV *sv;
5003
4561caa4 5004 new_SV(sv);
2304df62 5005 sv_upgrade(sv, SVt_RV);
76e3520e 5006 SvTEMP_off(tmpRef);
d689ffdd 5007 SvRV(sv) = tmpRef;
2304df62 5008 SvROK_on(sv);
2304df62
AD		 5009 return sv;
5010}
5011
954c1994 5012/* newRV_inc is #defined to newRV in sv.h */
5f05dabc 5013SV *
864dbfa3 5014Perl_newRV(pTHX_ SV *tmpRef)
5f05dabc 5015{
5f6447b6 5016 return newRV_noinc(SvREFCNT_inc(tmpRef));
5f05dabc 5017}
5f05dabc 5018
954c1994
GS		 5019/*
5020=for apidoc newSVsv
5021
5022Creates a new SV which is an exact duplicate of the original SV.
5023
5024=cut
5025*/
5026
79072805
LW		 5027/* make an exact duplicate of old */
5028
5029SV *
864dbfa3 5030Perl_newSVsv(pTHX_ register SV *old)
79072805 5031{
0453d815 5032 dTHR;
463ee0b2 5033 register SV *sv;
79072805
LW		 5034
5035 if (!old)
5036 return Nullsv;
8990e307 5037 if (SvTYPE(old) == SVTYPEMASK) {
0453d815
PM		 5038 if (ckWARN_d(WARN_INTERNAL))
5039 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
79072805
LW		 5040 return Nullsv;
5041 }
4561caa4 5042 new_SV(sv);
ff68c719 5043 if (SvTEMP(old)) {
5044 SvTEMP_off(old);
463ee0b2 5045 sv_setsv(sv,old);
ff68c719 5046 SvTEMP_on(old);
79072805
LW		 5047 }
5048 else
463ee0b2
LW		 5049 sv_setsv(sv,old);
5050 return sv;
79072805
LW		 5051}
5052
5053void
864dbfa3 5054Perl_sv_reset(pTHX_ register char *s, HV *stash)
79072805
LW		 5055{
5056 register HE *entry;
5057 register GV *gv;
5058 register SV *sv;
5059 register I32 i;
5060 register PMOP *pm;
5061 register I32 max;
4802d5d7 5062 char todo[PERL_UCHAR_MAX+1];
79072805 5063
49d8d3a1
MB		 5064 if (!stash)
5065 return;
5066
79072805
LW		 5067 if (!*s) { /* reset ?? searches */
5068 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
48c036b1 5069 pm->op_pmdynflags &= ~PMdf_USED;
79072805
LW		 5070 }
5071 return;
5072 }
5073
5074 /* reset variables */
5075
5076 if (!HvARRAY(stash))
5077 return;
463ee0b2
LW		 5078
5079 Zero(todo, 256, char);
79072805 5080 while (*s) {
4802d5d7 5081 i = (unsigned char)*s;
79072805
LW		 5082 if (s[1] == '-') {
5083 s += 2;
5084 }
4802d5d7 5085 max = (unsigned char)*s++;
79072805 5086 for ( ; i <= max; i++) {
463ee0b2
LW		 5087 todo[i] = 1;
5088 }
a0d0e21e 5089 for (i = 0; i <= (I32) HvMAX(stash); i++) {
79072805 5090 for (entry = HvARRAY(stash)[i];
9e35f4b3
GS		 5091 entry;
5092 entry = HeNEXT(entry))
5093 {
1edc1566 5094 if (!todo[(U8)*HeKEY(entry)])
463ee0b2 5095 continue;
1edc1566 5096 gv = (GV*)HeVAL(entry);
79072805 5097 sv = GvSV(gv);
9e35f4b3
GS		 5098 if (SvTHINKFIRST(sv)) {
5099 if (!SvREADONLY(sv) && SvROK(sv))
5100 sv_unref(sv);
5101 continue;
5102 }
a0d0e21e 5103 (void)SvOK_off(sv);
79072805
LW		 5104 if (SvTYPE(sv) >= SVt_PV) {
5105 SvCUR_set(sv, 0);
463ee0b2
LW		 5106 if (SvPVX(sv) != Nullch)
5107 *SvPVX(sv) = '\0';
44a8e56a 5108 SvTAINT(sv);
79072805
LW		 5109 }
5110 if (GvAV(gv)) {
5111 av_clear(GvAV(gv));
5112 }
44a8e56a 5113 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
463ee0b2 5114 hv_clear(GvHV(gv));
a0d0e21e 5115#ifndef VMS /* VMS has no environ array */
3280af22 5116 if (gv == PL_envgv)
79072805 5117 environ[0] = Nullch;
a0d0e21e 5118#endif
79072805
LW		 5119 }
5120 }
5121 }
5122 }
5123}
5124
46fc3d4c 5125IO*
864dbfa3 5126Perl_sv_2io(pTHX_ SV *sv)
46fc3d4c 5127{
5128 IO* io;
5129 GV* gv;
2d8e6c8d 5130 STRLEN n_a;
46fc3d4c 5131
5132 switch (SvTYPE(sv)) {
5133 case SVt_PVIO:
5134 io = (IO*)sv;
5135 break;
5136 case SVt_PVGV:
5137 gv = (GV*)sv;
5138 io = GvIO(gv);
5139 if (!io)
cea2e8a9 5140 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
46fc3d4c 5141 break;
5142 default:
5143 if (!SvOK(sv))
cea2e8a9 5144 Perl_croak(aTHX_ PL_no_usym, "filehandle");
46fc3d4c 5145 if (SvROK(sv))
5146 return sv_2io(SvRV(sv));
2d8e6c8d 5147 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
46fc3d4c 5148 if (gv)
5149 io = GvIO(gv);
5150 else
5151 io = 0;
5152 if (!io)
cea2e8a9 5153 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
46fc3d4c 5154 break;
5155 }
5156 return io;
5157}
5158
79072805 5159CV *
864dbfa3 5160Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
79072805
LW		 5161{
5162 GV *gv;
5163 CV *cv;
2d8e6c8d 5164 STRLEN n_a;
79072805
LW		 5165
5166 if (!sv)
93a17b20 5167 return *gvp = Nullgv, Nullcv;
79072805 5168 switch (SvTYPE(sv)) {
79072805
LW		 5169 case SVt_PVCV:
5170 *st = CvSTASH(sv);
5171 *gvp = Nullgv;
5172 return (CV*)sv;
5173 case SVt_PVHV:
5174 case SVt_PVAV:
5175 *gvp = Nullgv;
5176 return Nullcv;
8990e307
LW		 5177 case SVt_PVGV:
5178 gv = (GV*)sv;
a0d0e21e 5179 *gvp = gv;
8990e307
LW		 5180 *st = GvESTASH(gv);
5181 goto fix_gv;
5182
79072805 5183 default:
a0d0e21e
LW		 5184 if (SvGMAGICAL(sv))
5185 mg_get(sv);
5186 if (SvROK(sv)) {
0f4592ef 5187 dTHR;
f5284f61
IZ		 5188 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5189 tryAMAGICunDEREF(to_cv);
5190
62f274bf
GS		 5191 sv = SvRV(sv);
5192 if (SvTYPE(sv) == SVt_PVCV) {
5193 cv = (CV*)sv;
5194 *gvp = Nullgv;
5195 *st = CvSTASH(cv);
5196 return cv;
5197 }
5198 else if(isGV(sv))
5199 gv = (GV*)sv;
5200 else
cea2e8a9 5201 Perl_croak(aTHX_ "Not a subroutine reference");
a0d0e21e 5202 }
62f274bf 5203 else if (isGV(sv))
79072805
LW		 5204 gv = (GV*)sv;
5205 else
2d8e6c8d 5206 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
79072805
LW		 5207 *gvp = gv;
5208 if (!gv)
5209 return Nullcv;
5210 *st = GvESTASH(gv);
8990e307 5211 fix_gv:
8ebc5c01 5212 if (lref && !GvCVu(gv)) {
4633a7c4 5213 SV *tmpsv;
748a9306 5214 ENTER;
4633a7c4 5215 tmpsv = NEWSV(704,0);
16660edb 5216 gv_efullname3(tmpsv, gv, Nullch);
f6ec51f7
GS		 5217 /* XXX this is probably not what they think they're getting.
5218 * It has the same effect as "sub name;", i.e. just a forward
5219 * declaration! */
774d564b 5220 newSUB(start_subparse(FALSE, 0),
4633a7c4
LW		 5221 newSVOP(OP_CONST, 0, tmpsv),
5222 Nullop,
8990e307 5223 Nullop);
748a9306 5224 LEAVE;
8ebc5c01 5225 if (!GvCVu(gv))
cea2e8a9 5226 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
8990e307 5227 }
8ebc5c01 5228 return GvCVu(gv);
79072805
LW		 5229 }
5230}
5231
c461cf8f
JH		 5232/*
5233=for apidoc sv_true
5234
5235Returns true if the SV has a true value by Perl's rules.
5236
5237=cut
5238*/
5239
79072805 5240I32
864dbfa3 5241Perl_sv_true(pTHX_ register SV *sv)
79072805 5242{
4e35701f 5243 dTHR;
8990e307
LW		 5244 if (!sv)
5245 return 0;
79072805 5246 if (SvPOK(sv)) {
4e35701f
NIS		 5247 register XPV* tXpv;
5248 if ((tXpv = (XPV*)SvANY(sv)) &&
c2f1de04 5249 (tXpv->xpv_cur > 1 ||
4e35701f 5250 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
79072805
LW		 5251 return 1;
5252 else
5253 return 0;
5254 }
5255 else {
5256 if (SvIOK(sv))
463ee0b2 5257 return SvIVX(sv) != 0;
79072805
LW		 5258 else {
5259 if (SvNOK(sv))
463ee0b2 5260 return SvNVX(sv) != 0.0;
79072805 5261 else
463ee0b2 5262 return sv_2bool(sv);
79072805
LW		 5263 }
5264 }
5265}
79072805 5266
ff68c719 5267IV
864dbfa3 5268Perl_sv_iv(pTHX_ register SV *sv)
85e6fe83 5269{
25da4f38
IZ		 5270 if (SvIOK(sv)) {
5271 if (SvIsUV(sv))
5272 return (IV)SvUVX(sv);
ff68c719 5273 return SvIVX(sv);
25da4f38 5274 }
ff68c719 5275 return sv_2iv(sv);
85e6fe83 5276}
85e6fe83 5277
ff68c719 5278UV
864dbfa3 5279Perl_sv_uv(pTHX_ register SV *sv)
ff68c719 5280{
25da4f38
IZ		 5281 if (SvIOK(sv)) {
5282 if (SvIsUV(sv))
5283 return SvUVX(sv);
5284 return (UV)SvIVX(sv);
5285 }
ff68c719 5286 return sv_2uv(sv);
5287}
85e6fe83 5288
65202027 5289NV
864dbfa3 5290Perl_sv_nv(pTHX_ register SV *sv)
79072805 5291{
ff68c719 5292 if (SvNOK(sv))
5293 return SvNVX(sv);
5294 return sv_2nv(sv);
79072805 5295}
79072805 5296
79072805 5297char *
864dbfa3 5298Perl_sv_pv(pTHX_ SV *sv)
1fa8b10d
JD		 5299{
5300 STRLEN n_a;
5301
5302 if (SvPOK(sv))
5303 return SvPVX(sv);
5304
5305 return sv_2pv(sv, &n_a);
5306}
5307
5308char *
864dbfa3 5309Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
79072805 5310{
85e6fe83
LW		 5311 if (SvPOK(sv)) {
5312 *lp = SvCUR(sv);
a0d0e21e 5313 return SvPVX(sv);
85e6fe83 5314 }
463ee0b2 5315 return sv_2pv(sv, lp);
79072805 5316}
79072805 5317
c461cf8f
JH		 5318/*
5319=for apidoc sv_pvn_force
5320
5321Get a sensible string out of the SV somehow.
5322
5323=cut
5324*/
5325
a0d0e21e 5326char *
864dbfa3 5327Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
a0d0e21e
LW		 5328{
5329 char *s;
5330
6fc92669
GS		 5331 if (SvTHINKFIRST(sv) && !SvROK(sv))
5332 sv_force_normal(sv);
a0d0e21e
LW		 5333
5334 if (SvPOK(sv)) {
5335 *lp = SvCUR(sv);
5336 }
5337 else {
748a9306 5338 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
6fc92669 5339 dTHR;
cea2e8a9 5340 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
6fc92669 5341 PL_op_name[PL_op->op_type]);
a0d0e21e 5342 }
4633a7c4
LW		 5343 else
5344 s = sv_2pv(sv, lp);
a0d0e21e
LW		 5345 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5346 STRLEN len = *lp;
5347
5348 if (SvROK(sv))
5349 sv_unref(sv);
5350 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5351 SvGROW(sv, len + 1);
5352 Move(s,SvPVX(sv),len,char);
5353 SvCUR_set(sv, len);
5354 *SvEND(sv) = '\0';
5355 }
5356 if (!SvPOK(sv)) {
5357 SvPOK_on(sv); /* validate pointer */
5358 SvTAINT(sv);
1d7c1841
GS		 5359 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5360 PTR2UV(sv),SvPVX(sv)));
a0d0e21e
LW		 5361 }
5362 }
5363 return SvPVX(sv);
5364}
5365
5366char *
7340a771
GS		 5367Perl_sv_pvbyte(pTHX_ SV *sv)
5368{
5369 return sv_pv(sv);
5370}
5371
5372char *
5373Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5374{
5375 return sv_pvn(sv,lp);
5376}
5377
5378char *
5379Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5380{
5381 return sv_pvn_force(sv,lp);
5382}
5383
5384char *
5385Perl_sv_pvutf8(pTHX_ SV *sv)
5386{
560a288e 5387 sv_utf8_upgrade(sv);
7340a771
GS		 5388 return sv_pv(sv);
5389}
5390
5391char *
5392Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5393{
560a288e 5394 sv_utf8_upgrade(sv);
7340a771
GS		 5395 return sv_pvn(sv,lp);
5396}
5397
c461cf8f
JH		 5398/*
5399=for apidoc sv_pvutf8n_force
5400
5401Get a sensible UTF8-encoded string out of the SV somehow. See
5402L</sv_pvn_force>.
5403
5404=cut
5405*/
5406
7340a771
GS		 5407char *
5408Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5409{
560a288e 5410 sv_utf8_upgrade(sv);
7340a771
GS		 5411 return sv_pvn_force(sv,lp);
5412}
5413
c461cf8f
JH		 5414/*
5415=for apidoc sv_reftype
5416
5417Returns a string describing what the SV is a reference to.
5418
5419=cut
5420*/
5421
7340a771 5422char *
864dbfa3 5423Perl_sv_reftype(pTHX_ SV *sv, int ob)
a0d0e21e
LW		 5424{
5425 if (ob && SvOBJECT(sv))
5426 return HvNAME(SvSTASH(sv));
5427 else {
5428 switch (SvTYPE(sv)) {
5429 case SVt_NULL:
5430 case SVt_IV:
5431 case SVt_NV:
5432 case SVt_RV:
5433 case SVt_PV:
5434 case SVt_PVIV:
5435 case SVt_PVNV:
5436 case SVt_PVMG:
5437 case SVt_PVBM:
5438 if (SvROK(sv))
5439 return "REF";
5440 else
5441 return "SCALAR";
5442 case SVt_PVLV: return "LVALUE";
5443 case SVt_PVAV: return "ARRAY";
5444 case SVt_PVHV: return "HASH";
5445 case SVt_PVCV: return "CODE";
5446 case SVt_PVGV: return "GLOB";
1d2dff63 5447 case SVt_PVFM: return "FORMAT";
27f9d8f3 5448 case SVt_PVIO: return "IO";
a0d0e21e
LW		 5449 default: return "UNKNOWN";
5450 }
5451 }
5452}
5453
954c1994
GS		 5454/*
5455=for apidoc sv_isobject
5456
5457Returns a boolean indicating whether the SV is an RV pointing to a blessed
5458object. If the SV is not an RV, or if the object is not blessed, then this
5459will return false.
5460
5461=cut
5462*/
5463
463ee0b2 5464int
864dbfa3 5465Perl_sv_isobject(pTHX_ SV *sv)
85e6fe83 5466{
68dc0745 5467 if (!sv)
5468 return 0;
5469 if (SvGMAGICAL(sv))
5470 mg_get(sv);
85e6fe83
LW		 5471 if (!SvROK(sv))
5472 return 0;
5473 sv = (SV*)SvRV(sv);
5474 if (!SvOBJECT(sv))
5475 return 0;
5476 return 1;
5477}
5478
954c1994
GS		 5479/*
5480=for apidoc sv_isa
5481
5482Returns a boolean indicating whether the SV is blessed into the specified
5483class. This does not check for subtypes; use C<sv_derived_from> to verify
5484an inheritance relationship.
5485
5486=cut
5487*/
5488
85e6fe83 5489int
864dbfa3 5490Perl_sv_isa(pTHX_ SV *sv, const char *name)
463ee0b2 5491{
68dc0745 5492 if (!sv)
5493 return 0;
5494 if (SvGMAGICAL(sv))
5495 mg_get(sv);
ed6116ce 5496 if (!SvROK(sv))
463ee0b2 5497 return 0;
ed6116ce
LW		 5498 sv = (SV*)SvRV(sv);
5499 if (!SvOBJECT(sv))
463ee0b2
LW		 5500 return 0;
5501
5502 return strEQ(HvNAME(SvSTASH(sv)), name);
5503}
5504
954c1994
GS		 5505/*
5506=for apidoc newSVrv
5507
5508Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5509it will be upgraded to one. If C<classname> is non-null then the new SV will
5510be blessed in the specified package. The new SV is returned and its
5511reference count is 1.
5512
5513=cut
5514*/
5515
463ee0b2 5516SV*
864dbfa3 5517Perl_newSVrv(pTHX_ SV *rv, const char *classname)
463ee0b2 5518{
11343788 5519 dTHR;
463ee0b2
LW		 5520 SV *sv;
5521
4561caa4 5522 new_SV(sv);
51cf62d8 5523
2213622d 5524 SV_CHECK_THINKFIRST(rv);
51cf62d8 5525 SvAMAGIC_off(rv);
51cf62d8
OT		 5526
5527 if (SvTYPE(rv) < SVt_RV)
5528 sv_upgrade(rv, SVt_RV);
5529
5530 (void)SvOK_off(rv);
053fc874 5531 SvRV(rv) = sv;
ed6116ce 5532 SvROK_on(rv);
463ee0b2 5533
a0d0e21e
LW		 5534 if (classname) {
5535 HV* stash = gv_stashpv(classname, TRUE);
5536 (void)sv_bless(rv, stash);
5537 }
5538 return sv;
5539}
5540
954c1994
GS		 5541/*
5542=for apidoc sv_setref_pv
5543
5544Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5545argument will be upgraded to an RV. That RV will be modified to point to
5546the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5547into the SV. The C<classname> argument indicates the package for the
5548blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5549will be returned and will have a reference count of 1.
5550
5551Do not use with other Perl types such as HV, AV, SV, CV, because those
5552objects will become corrupted by the pointer copy process.
5553
5554Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5555
5556=cut
5557*/
5558
a0d0e21e 5559SV*
864dbfa3 5560Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
a0d0e21e 5561{
189b2af5 5562 if (!pv) {
3280af22 5563 sv_setsv(rv, &PL_sv_undef);
189b2af5
GS		 5564 SvSETMAGIC(rv);
5565 }
a0d0e21e 5566 else
56431972 5567 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
a0d0e21e
LW		 5568 return rv;
5569}
5570
954c1994
GS		 5571/*
5572=for apidoc sv_setref_iv
5573
5574Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5575argument will be upgraded to an RV. That RV will be modified to point to
5576the new SV. The C<classname> argument indicates the package for the
5577blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5578will be returned and will have a reference count of 1.
5579
5580=cut
5581*/
5582
a0d0e21e 5583SV*
864dbfa3 5584Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
a0d0e21e
LW		 5585{
5586 sv_setiv(newSVrv(rv,classname), iv);
5587 return rv;
5588}
5589
954c1994
GS		 5590/*
5591=for apidoc sv_setref_nv
5592
5593Copies a double into a new SV, optionally blessing the SV. The C<rv>
5594argument will be upgraded to an RV. That RV will be modified to point to
5595the new SV. The C<classname> argument indicates the package for the
5596blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5597will be returned and will have a reference count of 1.
5598
5599=cut
5600*/
5601
a0d0e21e 5602SV*
65202027 5603Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
a0d0e21e
LW		 5604{
5605 sv_setnv(newSVrv(rv,classname), nv);
5606 return rv;
5607}
463ee0b2 5608
954c1994
GS		 5609/*
5610=for apidoc sv_setref_pvn
5611
5612Copies a string into a new SV, optionally blessing the SV. The length of the
5613string must be specified with C<n>. The C<rv> argument will be upgraded to
5614an RV. That RV will be modified to point to the new SV. The C<classname>
5615argument indicates the package for the blessing. Set C<classname> to
5616C<Nullch> to avoid the blessing. The new SV will be returned and will have
5617a reference count of 1.
5618
5619Note that C<sv_setref_pv> copies the pointer while this copies the string.
5620
5621=cut
5622*/
5623
a0d0e21e 5624SV*
864dbfa3 5625Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
a0d0e21e
LW		 5626{
5627 sv_setpvn(newSVrv(rv,classname), pv, n);
463ee0b2
LW		 5628 return rv;
5629}
5630
954c1994
GS		 5631/*
5632=for apidoc sv_bless
5633
5634Blesses an SV into a specified package. The SV must be an RV. The package
5635must be designated by its stash (see C<gv_stashpv()>). The reference count
5636of the SV is unaffected.
5637
5638=cut
5639*/
5640
a0d0e21e 5641SV*
864dbfa3 5642Perl_sv_bless(pTHX_ SV *sv, HV *stash)
a0d0e21e 5643{
11343788 5644 dTHR;
76e3520e 5645 SV *tmpRef;
a0d0e21e 5646 if (!SvROK(sv))
cea2e8a9 5647 Perl_croak(aTHX_ "Can't bless non-reference value");
76e3520e
GS		 5648 tmpRef = SvRV(sv);
5649 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5650 if (SvREADONLY(tmpRef))
cea2e8a9 5651 Perl_croak(aTHX_ PL_no_modify);
76e3520e
GS		 5652 if (SvOBJECT(tmpRef)) {
5653 if (SvTYPE(tmpRef) != SVt_PVIO)
3280af22 5654 --PL_sv_objcount;
76e3520e 5655 SvREFCNT_dec(SvSTASH(tmpRef));
2e3febc6 5656 }
a0d0e21e 5657 }
76e3520e
GS		 5658 SvOBJECT_on(tmpRef);
5659 if (SvTYPE(tmpRef) != SVt_PVIO)
3280af22 5660 ++PL_sv_objcount;
76e3520e
GS		 5661 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5662 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
a0d0e21e 5663
2e3febc6
CS		 5664 if (Gv_AMG(stash))
5665 SvAMAGIC_on(sv);
5666 else
5667 SvAMAGIC_off(sv);
a0d0e21e
LW		 5668
5669 return sv;
5670}
5671
76e3520e 5672STATIC void
cea2e8a9 5673S_sv_unglob(pTHX_ SV *sv)
a0d0e21e 5674{
850fabdf
GS		 5675 void *xpvmg;
5676
a0d0e21e
LW		 5677 assert(SvTYPE(sv) == SVt_PVGV);
5678 SvFAKE_off(sv);
5679 if (GvGP(sv))
1edc1566 5680 gp_free((GV*)sv);
e826b3c7
GS		 5681 if (GvSTASH(sv)) {
5682 SvREFCNT_dec(GvSTASH(sv));
5683 GvSTASH(sv) = Nullhv;
5684 }
a0d0e21e
LW		 5685 sv_unmagic(sv, '*');
5686 Safefree(GvNAME(sv));
a5f75d66 5687 GvMULTI_off(sv);
850fabdf
GS		 5688
5689 /* need to keep SvANY(sv) in the right arena */
5690 xpvmg = new_XPVMG();
5691 StructCopy(SvANY(sv), xpvmg, XPVMG);
5692 del_XPVGV(SvANY(sv));
5693 SvANY(sv) = xpvmg;
5694
a0d0e21e
LW		 5695 SvFLAGS(sv) &= ~SVTYPEMASK;
5696 SvFLAGS(sv) |= SVt_PVMG;
5697}
5698
954c1994
GS		 5699/*
5700=for apidoc sv_unref
5701
5702Unsets the RV status of the SV, and decrements the reference count of
5703whatever was being referenced by the RV. This can almost be thought of
5704as a reversal of C<newSVrv>. See C<SvROK_off>.
5705
5706=cut
5707*/
5708
ed6116ce 5709void
864dbfa3 5710Perl_sv_unref(pTHX_ SV *sv)
ed6116ce 5711{
a0d0e21e 5712 SV* rv = SvRV(sv);
810b8aa5
GS		 5713
5714 if (SvWEAKREF(sv)) {
5715 sv_del_backref(sv);
5716 SvWEAKREF_off(sv);
5717 SvRV(sv) = 0;
5718 return;
5719 }
ed6116ce
LW		 5720 SvRV(sv) = 0;
5721 SvROK_off(sv);
4633a7c4
LW		 5722 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
5723 SvREFCNT_dec(rv);
8e07c86e 5724 else
4633a7c4 5725 sv_2mortal(rv); /* Schedule for freeing later */
ed6116ce 5726}
8990e307 5727
bbce6d69 5728void
864dbfa3 5729Perl_sv_taint(pTHX_ SV *sv)
bbce6d69 5730{
5731 sv_magic((sv), Nullsv, 't', Nullch, 0);
5732}
5733
5734void
864dbfa3 5735Perl_sv_untaint(pTHX_ SV *sv)
bbce6d69 5736{
13f57bf8 5737 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
36477c24 5738 MAGIC *mg = mg_find(sv, 't');
5739 if (mg)
565764a8 5740 mg->mg_len &= ~1;
36477c24 5741 }
bbce6d69 5742}
5743
5744bool
864dbfa3 5745Perl_sv_tainted(pTHX_ SV *sv)
bbce6d69 5746{
13f57bf8 5747 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
36477c24 5748 MAGIC *mg = mg_find(sv, 't');
155aba94 5749 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
36477c24 5750 return TRUE;
5751 }
5752 return FALSE;
bbce6d69 5753}
5754
954c1994
GS		 5755/*
5756=for apidoc sv_setpviv
5757
5758Copies an integer into the given SV, also updating its string value.
5759Does not handle 'set' magic. See C<sv_setpviv_mg>.
5760
5761=cut
5762*/
5763
84902520 5764void
864dbfa3 5765Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
84902520 5766{
25da4f38
IZ		 5767 char buf[TYPE_CHARS(UV)];
5768 char *ebuf;
5769 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
84902520 5770
25da4f38 5771 sv_setpvn(sv, ptr, ebuf - ptr);
84902520
TB		 5772}
5773
ef50df4b 5774
954c1994
GS		 5775/*
5776=for apidoc sv_setpviv_mg
5777
5778Like C<sv_setpviv>, but also handles 'set' magic.
5779
5780=cut
5781*/
5782
ef50df4b 5783void
864dbfa3 5784Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
ef50df4b 5785{
25da4f38
IZ		 5786 char buf[TYPE_CHARS(UV)];
5787 char *ebuf;
5788 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5789
5790 sv_setpvn(sv, ptr, ebuf - ptr);
ef50df4b
GS		 5791 SvSETMAGIC(sv);
5792}
5793
cea2e8a9
GS		 5794#if defined(PERL_IMPLICIT_CONTEXT)
5795void
5796Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5797{
5798 dTHX;
5799 va_list args;
5800 va_start(args, pat);
c5be433b 5801 sv_vsetpvf(sv, pat, &args);
cea2e8a9
GS		 5802 va_end(args);
5803}
5804
5805
5806void
5807Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5808{
5809 dTHX;
5810 va_list args;
5811 va_start(args, pat);
c5be433b 5812 sv_vsetpvf_mg(sv, pat, &args);
cea2e8a9 5813 va_end(args);
cea2e8a9
GS		 5814}
5815#endif
5816
954c1994
GS		 5817/*
5818=for apidoc sv_setpvf
5819
5820Processes its arguments like C<sprintf> and sets an SV to the formatted
5821output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5822
5823=cut
5824*/
5825
46fc3d4c 5826void
864dbfa3 5827Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
46fc3d4c 5828{
5829 va_list args;
46fc3d4c 5830 va_start(args, pat);
c5be433b 5831 sv_vsetpvf(sv, pat, &args);
46fc3d4c 5832 va_end(args);
5833}
5834
c5be433b
GS		 5835void
5836Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5837{
5838 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5839}
ef50df4b 5840
954c1994
GS		 5841/*
5842=for apidoc sv_setpvf_mg
5843
5844Like C<sv_setpvf>, but also handles 'set' magic.
5845
5846=cut
5847*/
5848
ef50df4b 5849void
864dbfa3 5850Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
ef50df4b
GS		 5851{
5852 va_list args;
ef50df4b 5853 va_start(args, pat);
c5be433b 5854 sv_vsetpvf_mg(sv, pat, &args);
ef50df4b 5855 va_end(args);
c5be433b
GS		 5856}
5857
5858void
5859Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5860{
5861 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
ef50df4b
GS		 5862 SvSETMAGIC(sv);
5863}
5864
cea2e8a9
GS		 5865#if defined(PERL_IMPLICIT_CONTEXT)
5866void
5867Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5868{
5869 dTHX;
5870 va_list args;
5871 va_start(args, pat);
c5be433b 5872 sv_vcatpvf(sv, pat, &args);
cea2e8a9
GS		 5873 va_end(args);
5874}
5875
5876void
5877Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5878{
5879 dTHX;
5880 va_list args;
5881 va_start(args, pat);
c5be433b 5882 sv_vcatpvf_mg(sv, pat, &args);
cea2e8a9 5883 va_end(args);
cea2e8a9
GS		 5884}
5885#endif
5886
954c1994
GS		 5887/*
5888=for apidoc sv_catpvf
5889
5890Processes its arguments like C<sprintf> and appends the formatted output
5891to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5892typically be called after calling this function to handle 'set' magic.
5893
5894=cut
5895*/
5896
46fc3d4c 5897void
864dbfa3 5898Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
46fc3d4c 5899{
5900 va_list args;
46fc3d4c 5901 va_start(args, pat);
c5be433b 5902 sv_vcatpvf(sv, pat, &args);
46fc3d4c 5903 va_end(args);
5904}
5905
ef50df4b 5906void
c5be433b
GS		 5907Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5908{
5909 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5910}
5911
954c1994
GS		 5912/*
5913=for apidoc sv_catpvf_mg
5914
5915Like C<sv_catpvf>, but also handles 'set' magic.
5916
5917=cut
5918*/
5919
c5be433b 5920void
864dbfa3 5921Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
ef50df4b
GS		 5922{
5923 va_list args;
ef50df4b 5924 va_start(args, pat);
c5be433b 5925 sv_vcatpvf_mg(sv, pat, &args);
ef50df4b 5926 va_end(args);
c5be433b
GS		 5927}
5928
5929void
5930Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5931{
5932 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
ef50df4b
GS		 5933 SvSETMAGIC(sv);
5934}
5935
954c1994
GS		 5936/*
5937=for apidoc sv_vsetpvfn
5938
5939Works like C<vcatpvfn> but copies the text into the SV instead of
5940appending it.
5941
5942=cut
5943*/
5944
46fc3d4c 5945void
7d5ea4e7 5946Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
46fc3d4c 5947{
5948 sv_setpvn(sv, "", 0);
7d5ea4e7 5949 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
46fc3d4c 5950}
5951
954c1994
GS		 5952/*
5953=for apidoc sv_vcatpvfn
5954
5955Processes its arguments like C<vsprintf> and appends the formatted output
5956to an SV. Uses an array of SVs if the C style variable argument list is
5957missing (NULL). When running with taint checks enabled, indicates via
5958C<maybe_tainted> if results are untrustworthy (often due to the use of
5959locales).
5960
5961=cut
5962*/
5963
46fc3d4c 5964void
7d5ea4e7 5965Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
46fc3d4c 5966{
e858de61 5967 dTHR;
46fc3d4c 5968 char *p;
5969 char *q;
5970 char *patend;
fc36a67e 5971 STRLEN origlen;
46fc3d4c 5972 I32 svix = 0;
c635e13b 5973 static char nullstr[] = "(null)";
7e2040f0 5974 SV *argsv;
46fc3d4c 5975
5976 /* no matter what, this is a string now */
fc36a67e 5977 (void)SvPV_force(sv, origlen);
46fc3d4c 5978
fc36a67e 5979 /* special-case "", "%s", and "%_" */
46fc3d4c 5980 if (patlen == 0)
5981 return;
fc36a67e 5982 if (patlen == 2 && pat[0] == '%') {
5983 switch (pat[1]) {
5984 case 's':
c635e13b 5985 if (args) {
5986 char *s = va_arg(*args, char*);
5987 sv_catpv(sv, s ? s : nullstr);
5988 }
7e2040f0 5989 else if (svix < svmax) {
fc36a67e 5990 sv_catsv(sv, *svargs);
7e2040f0
GS		 5991 if (DO_UTF8(*svargs))
5992 SvUTF8_on(sv);
5993 }
fc36a67e 5994 return;
5995 case '_':
5996 if (args) {
7e2040f0
GS		 5997 argsv = va_arg(*args, SV*);
5998 sv_catsv(sv, argsv);
5999 if (DO_UTF8(argsv))
6000 SvUTF8_on(sv);
fc36a67e 6001 return;
6002 }
6003 /* See comment on '_' below */
6004 break;
6005 }
46fc3d4c 6006 }
6007
6008 patend = (char*)pat + patlen;
6009 for (p = (char*)pat; p < patend; p = q) {
6010 bool alt = FALSE;
6011 bool left = FALSE;
b22c7a20
GS		 6012 bool vectorize = FALSE;
6013 bool utf = FALSE;
46fc3d4c 6014 char fill = ' ';
6015 char plus = 0;
6016 char intsize = 0;
6017 STRLEN width = 0;
fc36a67e 6018 STRLEN zeros = 0;
46fc3d4c 6019 bool has_precis = FALSE;
6020 STRLEN precis = 0;
7e2040f0 6021 bool is_utf = FALSE;
46fc3d4c 6022
6023 char esignbuf[4];
806e7201 6024 U8 utf8buf[UTF8_MAXLEN];
46fc3d4c 6025 STRLEN esignlen = 0;
6026
6027 char *eptr = Nullch;
fc36a67e 6028 STRLEN elen = 0;
089c015b
JH		 6029 /* Times 4: a decimal digit takes more than 3 binary digits.
6030 * NV_DIG: mantissa takes than many decimal digits.
6031 * Plus 32: Playing safe. */
6032 char ebuf[IV_DIG * 4 + NV_DIG + 32];
2d4389e4
JH		 6033 /* large enough for "%#.#f" --chip */
6034 /* what about long double NVs? --jhi */
b22c7a20
GS		 6035
6036 SV *vecsv;
a05b299f 6037 U8 *vecstr = Null(U8*);
b22c7a20 6038 STRLEN veclen = 0;
46fc3d4c 6039 char c;
6040 int i;
6041 unsigned base;
6042 IV iv;
6043 UV uv;
65202027 6044 NV nv;
46fc3d4c 6045 STRLEN have;
6046 STRLEN need;
6047 STRLEN gap;
b22c7a20
GS		 6048 char *dotstr = ".";
6049 STRLEN dotstrlen = 1;
46fc3d4c 6050
6051 for (q = p; q < patend && *q != '%'; ++q) ;
6052 if (q > p) {
6053 sv_catpvn(sv, p, q - p);
6054 p = q;
6055 }
6056 if (q++ >= patend)
6057 break;
6058
fc36a67e 6059 /* FLAGS */
6060
46fc3d4c 6061 while (*q) {
6062 switch (*q) {
6063 case ' ':
6064 case '+':
6065 plus = *q++;
6066 continue;
6067
6068 case '-':
6069 left = TRUE;
6070 q++;
6071 continue;
6072
6073 case '0':
6074 fill = *q++;
6075 continue;
6076
6077 case '#':
6078 alt = TRUE;
6079 q++;
6080 continue;
6081
b22c7a20
GS		 6082 case '*': /* printf("%*vX",":",$ipv6addr) */
6083 if (q[1] != 'v')
6084 break;
6085 q++;
6086 if (args)
6087 vecsv = va_arg(*args, SV*);
6088 else if (svix < svmax)
6089 vecsv = svargs[svix++];
9c3dd3fe
GS		 6090 else
6091 continue;
b22c7a20
GS		 6092 dotstr = SvPVx(vecsv,dotstrlen);
6093 if (DO_UTF8(vecsv))
6094 is_utf = TRUE;
6095 /* FALL THROUGH */
6096
6097 case 'v':
6098 vectorize = TRUE;
6099 q++;
b22c7a20
GS		 6100 continue;
6101
fc36a67e 6102 default:
6103 break;
6104 }
6105 break;
6106 }
46fc3d4c 6107
fc36a67e 6108 /* WIDTH */
6109
6110 switch (*q) {
6111 case '1': case '2': case '3':
6112 case '4': case '5': case '6':
6113 case '7': case '8': case '9':
6114 width = 0;
6115 while (isDIGIT(*q))
6116 width = width * 10 + (*q++ - '0');
6117 break;
6118
6119 case '*':
6120 if (args)
6121 i = va_arg(*args, int);
6122 else
6123 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6124 left |= (i < 0);
6125 width = (i < 0) ? -i : i;
6126 q++;
6127 break;
6128 }
6129
6130 /* PRECISION */
46fc3d4c 6131
fc36a67e 6132 if (*q == '.') {
6133 q++;
6134 if (*q == '*') {
46fc3d4c 6135 if (args)
6136 i = va_arg(*args, int);
6137 else
6138 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
fc36a67e 6139 precis = (i < 0) ? 0 : i;
46fc3d4c 6140 q++;
fc36a67e 6141 }
6142 else {
6143 precis = 0;
6144 while (isDIGIT(*q))
6145 precis = precis * 10 + (*q++ - '0');
6146 }
6147 has_precis = TRUE;
6148 }
46fc3d4c 6149
bb2899ba
GS		 6150 if (vectorize) {
6151 if (args) {
6152 vecsv = va_arg(*args, SV*);
6153 vecstr = (U8*)SvPVx(vecsv,veclen);
6154 utf = DO_UTF8(vecsv);
6155 }
6156 else if (svix < svmax) {
6157 vecsv = svargs[svix++];
6158 vecstr = (U8*)SvPVx(vecsv,veclen);
6159 utf = DO_UTF8(vecsv);
6160 }
6161 else {
6162 vecstr = (U8*)"";
6163 veclen = 0;
6164 }
6165 }
6166
fc36a67e 6167 /* SIZE */
46fc3d4c 6168
fc36a67e 6169 switch (*q) {
6f9bb7fd
GS		 6170#ifdef HAS_QUAD
6171 case 'L': /* Ld */
6172 case 'q': /* qd */
6173 intsize = 'q';
6174 q++;
6175 break;
6176#endif
fc36a67e 6177 case 'l':
cf2093f6
JH		 6178#ifdef HAS_QUAD
6179 if (*(q + 1) == 'l') { /* lld */
fc36a67e 6180 intsize = 'q';
6181 q += 2;
46fc3d4c 6182 break;
cf2093f6 6183 }
fc36a67e 6184#endif
6f9bb7fd 6185 /* FALL THROUGH */
fc36a67e 6186 case 'h':
cf2093f6 6187 /* FALL THROUGH */
fc36a67e 6188 case 'V':
6189 intsize = *q++;
46fc3d4c 6190 break;
6191 }
6192
fc36a67e 6193 /* CONVERSION */
6194
46fc3d4c 6195 switch (c = *q++) {
6196
6197 /* STRINGS */
6198
6199 case '%':
6200 eptr = q - 1;
6201 elen = 1;
6202 goto string;
6203
6204 case 'c':
7e2040f0
GS		 6205 if (args)
6206 uv = va_arg(*args, int);
6207 else
6208 uv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
3969a896 6209 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
dfe13c55
GS		 6210 eptr = (char*)utf8buf;
6211 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
7e2040f0
GS		 6212 is_utf = TRUE;
6213 }
6214 else {
6215 c = (char)uv;
6216 eptr = &c;
6217 elen = 1;
a0ed51b3 6218 }
46fc3d4c 6219 goto string;
6220
46fc3d4c 6221 case 's':
6222 if (args) {
fc36a67e 6223 eptr = va_arg(*args, char*);
c635e13b 6224 if (eptr)
1d7c1841
GS		 6225#ifdef MACOS_TRADITIONAL
6226 /* On MacOS, %#s format is used for Pascal strings */
6227 if (alt)
6228 elen = *eptr++;
6229 else
6230#endif
c635e13b 6231 elen = strlen(eptr);
6232 else {
6233 eptr = nullstr;
6234 elen = sizeof nullstr - 1;
6235 }
46fc3d4c 6236 }
a0ed51b3 6237 else if (svix < svmax) {
7e2040f0
GS		 6238 argsv = svargs[svix++];
6239 eptr = SvPVx(argsv, elen);
6240 if (DO_UTF8(argsv)) {
a0ed51b3
LW		 6241 if (has_precis && precis < elen) {
6242 I32 p = precis;
7e2040f0 6243 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
a0ed51b3
LW		 6244 precis = p;
6245 }
6246 if (width) { /* fudge width (can't fudge elen) */
7e2040f0 6247 width += elen - sv_len_utf8(argsv);
a0ed51b3 6248 }
7e2040f0 6249 is_utf = TRUE;
a0ed51b3
LW		 6250 }
6251 }
46fc3d4c 6252 goto string;
6253
fc36a67e 6254 case '_':
6255 /*
6256 * The "%_" hack might have to be changed someday,
6257 * if ISO or ANSI decide to use '_' for something.
6258 * So we keep it hidden from users' code.
6259 */
6260 if (!args)
6261 goto unknown;
7e2040f0
GS		 6262 argsv = va_arg(*args,SV*);
6263 eptr = SvPVx(argsv, elen);
6264 if (DO_UTF8(argsv))
6265 is_utf = TRUE;
fc36a67e 6266
46fc3d4c 6267 string:
b22c7a20 6268 vectorize = FALSE;
46fc3d4c 6269 if (has_precis && elen > precis)
6270 elen = precis;
6271 break;
6272
6273 /* INTEGERS */
6274
fc36a67e 6275 case 'p':
c2e66d9e
GS		 6276 if (alt)
6277 goto unknown;
fc36a67e 6278 if (args)
56431972 6279 uv = PTR2UV(va_arg(*args, void*));
fc36a67e 6280 else
56431972 6281 uv = (svix < svmax) ? PTR2UV(svargs[svix++]) : 0;
fc36a67e 6282 base = 16;
6283 goto integer;
6284
46fc3d4c 6285 case 'D':
29fe7a80 6286#ifdef IV_IS_QUAD
22f3ae8c 6287 intsize = 'q';
29fe7a80 6288#else
46fc3d4c 6289 intsize = 'l';
29fe7a80 6290#endif
46fc3d4c 6291 /* FALL THROUGH */
6292 case 'd':
6293 case 'i':
b22c7a20
GS		 6294 if (vectorize) {
6295 I32 ulen;
6296 if (!veclen) {
6297 vectorize = FALSE;
6298 break;
6299 }
6300 if (utf)
6301 iv = (IV)utf8_to_uv(vecstr, &ulen);
6302 else {
a05b299f 6303 iv = *vecstr;
b22c7a20
GS		 6304 ulen = 1;
6305 }
6306 vecstr += ulen;
6307 veclen -= ulen;
6308 }
6309 else if (args) {
46fc3d4c 6310 switch (intsize) {
6311 case 'h': iv = (short)va_arg(*args, int); break;
6312 default: iv = va_arg(*args, int); break;
6313 case 'l': iv = va_arg(*args, long); break;
fc36a67e 6314 case 'V': iv = va_arg(*args, IV); break;
cf2093f6
JH		 6315#ifdef HAS_QUAD
6316 case 'q': iv = va_arg(*args, Quad_t); break;
6317#endif
46fc3d4c 6318 }
6319 }
6320 else {
6321 iv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
6322 switch (intsize) {
6323 case 'h': iv = (short)iv; break;
be28567c 6324 default: break;
46fc3d4c 6325 case 'l': iv = (long)iv; break;
fc36a67e 6326 case 'V': break;
cf2093f6
JH		 6327#ifdef HAS_QUAD
6328 case 'q': iv = (Quad_t)iv; break;
6329#endif
46fc3d4c 6330 }
6331 }
6332 if (iv >= 0) {
6333 uv = iv;
6334 if (plus)
6335 esignbuf[esignlen++] = plus;
6336 }
6337 else {
6338 uv = -iv;
6339 esignbuf[esignlen++] = '-';
6340 }
6341 base = 10;
6342 goto integer;
6343
fc36a67e 6344 case 'U':
29fe7a80 6345#ifdef IV_IS_QUAD
22f3ae8c 6346 intsize = 'q';
29fe7a80 6347#else
fc36a67e 6348 intsize = 'l';
29fe7a80 6349#endif
fc36a67e 6350 /* FALL THROUGH */
6351 case 'u':
6352 base = 10;
6353 goto uns_integer;
6354
4f19785b
WSI		 6355 case 'b':
6356 base = 2;
6357 goto uns_integer;
6358
46fc3d4c 6359 case 'O':
29fe7a80 6360#ifdef IV_IS_QUAD
22f3ae8c 6361 intsize = 'q';
29fe7a80 6362#else
46fc3d4c 6363 intsize = 'l';
29fe7a80 6364#endif
46fc3d4c 6365 /* FALL THROUGH */
6366 case 'o':
6367 base = 8;
6368 goto uns_integer;
6369
6370 case 'X':
46fc3d4c 6371 case 'x':
6372 base = 16;
46fc3d4c 6373
6374 uns_integer:
b22c7a20
GS		 6375 if (vectorize) {
6376 I32 ulen;
6377 vector:
6378 if (!veclen) {
6379 vectorize = FALSE;
6380 break;
6381 }
6382 if (utf)
6383 uv = utf8_to_uv(vecstr, &ulen);
6384 else {
a05b299f 6385 uv = *vecstr;
b22c7a20
GS		 6386 ulen = 1;
6387 }
6388 vecstr += ulen;
6389 veclen -= ulen;
6390 }
6391 else if (args) {
46fc3d4c 6392 switch (intsize) {
6393 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6394 default: uv = va_arg(*args, unsigned); break;
6395 case 'l': uv = va_arg(*args, unsigned long); break;
fc36a67e 6396 case 'V': uv = va_arg(*args, UV); break;
cf2093f6
JH		 6397#ifdef HAS_QUAD
6398 case 'q': uv = va_arg(*args, Quad_t); break;
6399#endif
46fc3d4c 6400 }
6401 }
6402 else {
6403 uv = (svix < svmax) ? SvUVx(svargs[svix++]) : 0;
6404 switch (intsize) {
6405 case 'h': uv = (unsigned short)uv; break;
be28567c 6406 default: break;
46fc3d4c 6407 case 'l': uv = (unsigned long)uv; break;
fc36a67e 6408 case 'V': break;
cf2093f6
JH		 6409#ifdef HAS_QUAD
6410 case 'q': uv = (Quad_t)uv; break;
6411#endif
46fc3d4c 6412 }
6413 }
6414
6415 integer:
46fc3d4c 6416 eptr = ebuf + sizeof ebuf;
fc36a67e 6417 switch (base) {
6418 unsigned dig;
6419 case 16:
c10ed8b9
HS		 6420 if (!uv)
6421 alt = FALSE;
1d7c1841
GS		 6422 p = (char*)((c == 'X')
6423 ? "0123456789ABCDEF" : "0123456789abcdef");
fc36a67e 6424 do {
6425 dig = uv & 15;
6426 *--eptr = p[dig];
6427 } while (uv >>= 4);
6428 if (alt) {
46fc3d4c 6429 esignbuf[esignlen++] = '0';
fc36a67e 6430 esignbuf[esignlen++] = c; /* 'x' or 'X' */
46fc3d4c 6431 }
fc36a67e 6432 break;
6433 case 8:
6434 do {
6435 dig = uv & 7;
6436 *--eptr = '0' + dig;
6437 } while (uv >>= 3);
6438 if (alt && *eptr != '0')
6439 *--eptr = '0';
6440 break;
4f19785b
WSI		 6441 case 2:
6442 do {
6443 dig = uv & 1;
6444 *--eptr = '0' + dig;
6445 } while (uv >>= 1);
eda88b6d
JH		 6446 if (alt) {
6447 esignbuf[esignlen++] = '0';
7481bb52 6448 esignbuf[esignlen++] = 'b';
eda88b6d 6449 }
4f19785b 6450 break;
fc36a67e 6451 default: /* it had better be ten or less */
6bc102ca 6452#if defined(PERL_Y2KWARN)
e476b1b5 6453 if (ckWARN(WARN_Y2K)) {
6bc102ca
GS		 6454 STRLEN n;
6455 char *s = SvPV(sv,n);
6456 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6457 && (n == 2 || !isDIGIT(s[n-3])))
6458 {
e476b1b5 6459 Perl_warner(aTHX_ WARN_Y2K,
6bc102ca
GS		 6460 "Possible Y2K bug: %%%c %s",
6461 c, "format string following '19'");
6462 }
6463 }
6464#endif
fc36a67e 6465 do {
6466 dig = uv % base;
6467 *--eptr = '0' + dig;
6468 } while (uv /= base);
6469 break;
46fc3d4c 6470 }
6471 elen = (ebuf + sizeof ebuf) - eptr;
c10ed8b9
HS		 6472 if (has_precis) {
6473 if (precis > elen)
6474 zeros = precis - elen;
6475 else if (precis == 0 && elen == 1 && *eptr == '0')
6476 elen = 0;
6477 }
46fc3d4c 6478 break;
6479
6480 /* FLOATING POINT */
6481
fc36a67e 6482 case 'F':
6483 c = 'f'; /* maybe %F isn't supported here */
6484 /* FALL THROUGH */
46fc3d4c 6485 case 'e': case 'E':
fc36a67e 6486 case 'f':
46fc3d4c 6487 case 'g': case 'G':
6488
6489 /* This is evil, but floating point is even more evil */
6490
b22c7a20 6491 vectorize = FALSE;
fc36a67e 6492 if (args)
65202027 6493 nv = va_arg(*args, NV);
fc36a67e 6494 else
6495 nv = (svix < svmax) ? SvNVx(svargs[svix++]) : 0.0;
6496
6497 need = 0;
6498 if (c != 'e' && c != 'E') {
6499 i = PERL_INT_MIN;
73b309ea 6500 (void)Perl_frexp(nv, &i);
fc36a67e 6501 if (i == PERL_INT_MIN)
cea2e8a9 6502 Perl_die(aTHX_ "panic: frexp");
c635e13b 6503 if (i > 0)
fc36a67e 6504 need = BIT_DIGITS(i);
6505 }
6506 need += has_precis ? precis : 6; /* known default */
6507 if (need < width)
6508 need = width;
6509
46fc3d4c 6510 need += 20; /* fudge factor */
80252599
GS		 6511 if (PL_efloatsize < need) {
6512 Safefree(PL_efloatbuf);
6513 PL_efloatsize = need + 20; /* more fudge */
6514 New(906, PL_efloatbuf, PL_efloatsize, char);
7d5ea4e7 6515 PL_efloatbuf[0] = '\0';
46fc3d4c 6516 }
6517
6518 eptr = ebuf + sizeof ebuf;
6519 *--eptr = '\0';
6520 *--eptr = c;
65202027 6521#ifdef USE_LONG_DOUBLE
cf2093f6 6522 {
7a7a2329 6523 static char const my_prifldbl[] = PERL_PRIfldbl;
f320eb41
JH		 6524 char const *p = my_prifldbl + sizeof my_prifldbl - 3;
6525 while (p >= my_prifldbl) { *--eptr = *p--; }
cf2093f6 6526 }
65202027 6527#endif
46fc3d4c 6528 if (has_precis) {
6529 base = precis;
6530 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6531 *--eptr = '.';
6532 }
6533 if (width) {
6534 base = width;
6535 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6536 }
6537 if (fill == '0')
6538 *--eptr = fill;
84902520
TB		 6539 if (left)
6540 *--eptr = '-';
46fc3d4c 6541 if (plus)
6542 *--eptr = plus;
6543 if (alt)
6544 *--eptr = '#';
6545 *--eptr = '%';
6546
097ee67d
JH		 6547 {
6548 RESTORE_NUMERIC_STANDARD();
6549 (void)sprintf(PL_efloatbuf, eptr, nv);
6550 RESTORE_NUMERIC_LOCAL();
6551 }
46fc3d4c 6552
80252599
GS		 6553 eptr = PL_efloatbuf;
6554 elen = strlen(PL_efloatbuf);
46fc3d4c 6555 break;
6556
fc36a67e 6557 /* SPECIAL */
6558
6559 case 'n':
b22c7a20 6560 vectorize = FALSE;
fc36a67e 6561 i = SvCUR(sv) - origlen;
6562 if (args) {
c635e13b 6563 switch (intsize) {
6564 case 'h': *(va_arg(*args, short*)) = i; break;
6565 default: *(va_arg(*args, int*)) = i; break;
6566 case 'l': *(va_arg(*args, long*)) = i; break;
6567 case 'V': *(va_arg(*args, IV*)) = i; break;
cf2093f6
JH		 6568#ifdef HAS_QUAD
6569 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6570#endif
c635e13b 6571 }
fc36a67e 6572 }
6573 else if (svix < svmax)
c2e66d9e 6574 sv_setuv_mg(svargs[svix++], (UV)i);
fc36a67e 6575 continue; /* not "break" */
6576
6577 /* UNKNOWN */
6578
46fc3d4c 6579 default:
fc36a67e 6580 unknown:
b22c7a20 6581 vectorize = FALSE;
599cee73 6582 if (!args && ckWARN(WARN_PRINTF) &&
533c011a 6583 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
c635e13b 6584 SV *msg = sv_newmortal();
cea2e8a9 6585 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
533c011a 6586 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
0f4b6630 6587 if (c) {
0f4b6630
JH		 6588 if (isPRINT(c))
6589 Perl_sv_catpvf(aTHX_ msg,
6590 "\"%%%c\"", c & 0xFF);
6591 else
6592 Perl_sv_catpvf(aTHX_ msg,
57def98f 6593 "\"%%\\%03"UVof"\"",
0f4b6630 6594 (UV)c & 0xFF);
0f4b6630 6595 } else
c635e13b 6596 sv_catpv(msg, "end of string");
894356b3 6597 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
c635e13b 6598 }
fb73857a 6599
6600 /* output mangled stuff ... */
6601 if (c == '\0')
6602 --q;
46fc3d4c 6603 eptr = p;
6604 elen = q - p;
fb73857a 6605
6606 /* ... right here, because formatting flags should not apply */
6607 SvGROW(sv, SvCUR(sv) + elen + 1);
6608 p = SvEND(sv);
6609 memcpy(p, eptr, elen);
6610 p += elen;
6611 *p = '\0';
6612 SvCUR(sv) = p - SvPVX(sv);
6613 continue; /* not "break" */
46fc3d4c 6614 }
6615
fc36a67e 6616 have = esignlen + zeros + elen;
46fc3d4c 6617 need = (have > width ? have : width);
6618 gap = need - have;
6619
b22c7a20 6620 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
46fc3d4c 6621 p = SvEND(sv);
6622 if (esignlen && fill == '0') {
6623 for (i = 0; i < esignlen; i++)
6624 *p++ = esignbuf[i];
6625 }
6626 if (gap && !left) {
6627 memset(p, fill, gap);
6628 p += gap;
6629 }
6630 if (esignlen && fill != '0') {
6631 for (i = 0; i < esignlen; i++)
6632 *p++ = esignbuf[i];
6633 }
fc36a67e 6634 if (zeros) {
6635 for (i = zeros; i; i--)
6636 *p++ = '0';
6637 }
46fc3d4c 6638 if (elen) {
6639 memcpy(p, eptr, elen);
6640 p += elen;
6641 }
6642 if (gap && left) {
6643 memset(p, ' ', gap);
6644 p += gap;
6645 }
b22c7a20
GS		 6646 if (vectorize) {
6647 if (veclen) {
6648 memcpy(p, dotstr, dotstrlen);
6649 p += dotstrlen;
6650 }
6651 else
6652 vectorize = FALSE; /* done iterating over vecstr */
6653 }
7e2040f0
GS		 6654 if (is_utf)
6655 SvUTF8_on(sv);
46fc3d4c 6656 *p = '\0';
6657 SvCUR(sv) = p - SvPVX(sv);
b22c7a20
GS		 6658 if (vectorize) {
6659 esignlen = 0;
6660 goto vector;
6661 }
46fc3d4c 6662 }
6663}
51371543 6664
1d7c1841
GS		 6665#if defined(USE_ITHREADS)
6666
6667#if defined(USE_THREADS)
6668# include "error: USE_THREADS and USE_ITHREADS are incompatible"
6669#endif
6670
1d7c1841
GS		 6671#ifndef GpREFCNT_inc
6672# define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6673#endif
6674
6675
6676#define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6677#define av_dup(s) (AV*)sv_dup((SV*)s)
6678#define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6679#define hv_dup(s) (HV*)sv_dup((SV*)s)
6680#define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6681#define cv_dup(s) (CV*)sv_dup((SV*)s)
6682#define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6683#define io_dup(s) (IO*)sv_dup((SV*)s)
6684#define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6685#define gv_dup(s) (GV*)sv_dup((SV*)s)
6686#define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6687#define SAVEPV(p) (p ? savepv(p) : Nullch)
6688#define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6689
6690REGEXP *
6691Perl_re_dup(pTHX_ REGEXP *r)
6692{
6693 /* XXX fix when pmop->op_pmregexp becomes shared */
6694 return ReREFCNT_inc(r);
6695}
6696
6697PerlIO *
6698Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6699{
6700 PerlIO *ret;
6701 if (!fp)
6702 return (PerlIO*)NULL;
6703
6704 /* look for it in the table first */
6705 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6706 if (ret)
6707 return ret;
6708
6709 /* create anew and remember what it is */
6710 ret = PerlIO_fdupopen(fp);
6711 ptr_table_store(PL_ptr_table, fp, ret);
6712 return ret;
6713}
6714
6715DIR *
6716Perl_dirp_dup(pTHX_ DIR *dp)
6717{
6718 if (!dp)
6719 return (DIR*)NULL;
6720 /* XXX TODO */
6721 return dp;
6722}
6723
6724GP *
6725Perl_gp_dup(pTHX_ GP *gp)
6726{
6727 GP *ret;
6728 if (!gp)
6729 return (GP*)NULL;
6730 /* look for it in the table first */
6731 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6732 if (ret)
6733 return ret;
6734
6735 /* create anew and remember what it is */
6736 Newz(0, ret, 1, GP);
6737 ptr_table_store(PL_ptr_table, gp, ret);
6738
6739 /* clone */
6740 ret->gp_refcnt = 0; /* must be before any other dups! */
6741 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6742 ret->gp_io = io_dup_inc(gp->gp_io);
6743 ret->gp_form = cv_dup_inc(gp->gp_form);
6744 ret->gp_av = av_dup_inc(gp->gp_av);
6745 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6746 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6747 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6748 ret->gp_cvgen = gp->gp_cvgen;
6749 ret->gp_flags = gp->gp_flags;
6750 ret->gp_line = gp->gp_line;
6751 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6752 return ret;
6753}
6754
6755MAGIC *
6756Perl_mg_dup(pTHX_ MAGIC *mg)
6757{
6758 MAGIC *mgret = (MAGIC*)NULL;
6759 MAGIC *mgprev;
6760 if (!mg)
6761 return (MAGIC*)NULL;
6762 /* look for it in the table first */
6763 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6764 if (mgret)
6765 return mgret;
6766
6767 for (; mg; mg = mg->mg_moremagic) {
6768 MAGIC *nmg;
6769 Newz(0, nmg, 1, MAGIC);
6770 if (!mgret)
6771 mgret = nmg;
6772 else
6773 mgprev->mg_moremagic = nmg;
6774 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6775 nmg->mg_private = mg->mg_private;
6776 nmg->mg_type = mg->mg_type;
6777 nmg->mg_flags = mg->mg_flags;
6778 if (mg->mg_type == 'r') {
6779 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6780 }
6781 else {
6782 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6783 ? sv_dup_inc(mg->mg_obj)
6784 : sv_dup(mg->mg_obj);
6785 }
6786 nmg->mg_len = mg->mg_len;
6787 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6788 if (mg->mg_ptr && mg->mg_type != 'g') {
6789 if (mg->mg_len >= 0) {
6790 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6791 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6792 AMT *amtp = (AMT*)mg->mg_ptr;
6793 AMT *namtp = (AMT*)nmg->mg_ptr;
6794 I32 i;
6795 for (i = 1; i < NofAMmeth; i++) {
6796 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6797 }
6798 }
6799 }
6800 else if (mg->mg_len == HEf_SVKEY)
6801 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6802 }
6803 mgprev = nmg;
6804 }
6805 return mgret;
6806}
6807
6808PTR_TBL_t *
6809Perl_ptr_table_new(pTHX)
6810{
6811 PTR_TBL_t *tbl;
6812 Newz(0, tbl, 1, PTR_TBL_t);
6813 tbl->tbl_max = 511;
6814 tbl->tbl_items = 0;
6815 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6816 return tbl;
6817}
6818
6819void *
6820Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6821{
6822 PTR_TBL_ENT_t *tblent;
d2a79402 6823 UV hash = PTR2UV(sv);
1d7c1841
GS		 6824 assert(tbl);
6825 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6826 for (; tblent; tblent = tblent->next) {
6827 if (tblent->oldval == sv)
6828 return tblent->newval;
6829 }
6830 return (void*)NULL;
6831}
6832
6833void
6834Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6835{
6836 PTR_TBL_ENT_t *tblent, **otblent;
6837 /* XXX this may be pessimal on platforms where pointers aren't good
6838 * hash values e.g. if they grow faster in the most significant
6839 * bits */
d2a79402 6840 UV hash = PTR2UV(oldv);
1d7c1841
GS		 6841 bool i = 1;
6842
6843 assert(tbl);
6844 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6845 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6846 if (tblent->oldval == oldv) {
6847 tblent->newval = newv;
6848 tbl->tbl_items++;
6849 return;
6850 }
6851 }
6852 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6853 tblent->oldval = oldv;
6854 tblent->newval = newv;
6855 tblent->next = *otblent;
6856 *otblent = tblent;
6857 tbl->tbl_items++;
6858 if (i && tbl->tbl_items > tbl->tbl_max)
6859 ptr_table_split(tbl);
6860}
6861
6862void
6863Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6864{
6865 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6866 UV oldsize = tbl->tbl_max + 1;
6867 UV newsize = oldsize * 2;
6868 UV i;
6869
6870 Renew(ary, newsize, PTR_TBL_ENT_t*);
6871 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6872 tbl->tbl_max = --newsize;
6873 tbl->tbl_ary = ary;
6874 for (i=0; i < oldsize; i++, ary++) {
6875 PTR_TBL_ENT_t **curentp, **entp, *ent;
6876 if (!*ary)
6877 continue;
6878 curentp = ary + oldsize;
6879 for (entp = ary, ent = *ary; ent; ent = *entp) {
d2a79402 6880 if ((newsize & PTR2UV(ent->oldval)) != i) {
1d7c1841
GS		 6881 *entp = ent->next;
6882 ent->next = *curentp;
6883 *curentp = ent;
6884 continue;
6885 }
6886 else
6887 entp = &ent->next;
6888 }
6889 }
6890}
6891
6892#ifdef DEBUGGING
6893char *PL_watch_pvx;
6894#endif
6895
6896SV *
6897Perl_sv_dup(pTHX_ SV *sstr)
6898{
1d7c1841
GS		 6899 SV *dstr;
6900
6901 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6902 return Nullsv;
6903 /* look for it in the table first */
6904 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6905 if (dstr)
6906 return dstr;
6907
6908 /* create anew and remember what it is */
6909 new_SV(dstr);
6910 ptr_table_store(PL_ptr_table, sstr, dstr);
6911
6912 /* clone */
6913 SvFLAGS(dstr) = SvFLAGS(sstr);
6914 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6915 SvREFCNT(dstr) = 0; /* must be before any other dups! */
6916
6917#ifdef DEBUGGING
6918 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
6919 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
6920 PL_watch_pvx, SvPVX(sstr));
6921#endif
6922
6923 switch (SvTYPE(sstr)) {
6924 case SVt_NULL:
6925 SvANY(dstr) = NULL;
6926 break;
6927 case SVt_IV:
6928 SvANY(dstr) = new_XIV();
6929 SvIVX(dstr) = SvIVX(sstr);
6930 break;
6931 case SVt_NV:
6932 SvANY(dstr) = new_XNV();
6933 SvNVX(dstr) = SvNVX(sstr);
6934 break;
6935 case SVt_RV:
6936 SvANY(dstr) = new_XRV();
6937 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6938 break;
6939 case SVt_PV:
6940 SvANY(dstr) = new_XPV();
6941 SvCUR(dstr) = SvCUR(sstr);
6942 SvLEN(dstr) = SvLEN(sstr);
6943 if (SvROK(sstr))
6944 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6945 else if (SvPVX(sstr) && SvLEN(sstr))
6946 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6947 else
6948 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6949 break;
6950 case SVt_PVIV:
6951 SvANY(dstr) = new_XPVIV();
6952 SvCUR(dstr) = SvCUR(sstr);
6953 SvLEN(dstr) = SvLEN(sstr);
6954 SvIVX(dstr) = SvIVX(sstr);
6955 if (SvROK(sstr))
6956 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6957 else if (SvPVX(sstr) && SvLEN(sstr))
6958 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6959 else
6960 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6961 break;
6962 case SVt_PVNV:
6963 SvANY(dstr) = new_XPVNV();
6964 SvCUR(dstr) = SvCUR(sstr);
6965 SvLEN(dstr) = SvLEN(sstr);
6966 SvIVX(dstr) = SvIVX(sstr);
6967 SvNVX(dstr) = SvNVX(sstr);
6968 if (SvROK(sstr))
6969 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6970 else if (SvPVX(sstr) && SvLEN(sstr))
6971 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6972 else
6973 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6974 break;
6975 case SVt_PVMG:
6976 SvANY(dstr) = new_XPVMG();
6977 SvCUR(dstr) = SvCUR(sstr);
6978 SvLEN(dstr) = SvLEN(sstr);
6979 SvIVX(dstr) = SvIVX(sstr);
6980 SvNVX(dstr) = SvNVX(sstr);
6981 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
6982 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
6983 if (SvROK(sstr))
6984 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
6985 else if (SvPVX(sstr) && SvLEN(sstr))
6986 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
6987 else
6988 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
6989 break;
6990 case SVt_PVBM:
6991 SvANY(dstr) = new_XPVBM();
6992 SvCUR(dstr) = SvCUR(sstr);
6993 SvLEN(dstr) = SvLEN(sstr);
6994 SvIVX(dstr) = SvIVX(sstr);
6995 SvNVX(dstr) = SvNVX(sstr);
6996 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
6997 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
6998 if (SvROK(sstr))
6999 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7000 else if (SvPVX(sstr) && SvLEN(sstr))
7001 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7002 else
7003 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7004 BmRARE(dstr) = BmRARE(sstr);
7005 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7006 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7007 break;
7008 case SVt_PVLV:
7009 SvANY(dstr) = new_XPVLV();
7010 SvCUR(dstr) = SvCUR(sstr);
7011 SvLEN(dstr) = SvLEN(sstr);
7012 SvIVX(dstr) = SvIVX(sstr);
7013 SvNVX(dstr) = SvNVX(sstr);
7014 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7015 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7016 if (SvROK(sstr))
7017 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7018 else if (SvPVX(sstr) && SvLEN(sstr))
7019 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7020 else
7021 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7022 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7023 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7024 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7025 LvTYPE(dstr) = LvTYPE(sstr);
7026 break;
7027 case SVt_PVGV:
7028 SvANY(dstr) = new_XPVGV();
7029 SvCUR(dstr) = SvCUR(sstr);
7030 SvLEN(dstr) = SvLEN(sstr);
7031 SvIVX(dstr) = SvIVX(sstr);
7032 SvNVX(dstr) = SvNVX(sstr);
7033 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7034 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7035 if (SvROK(sstr))
7036 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7037 else if (SvPVX(sstr) && SvLEN(sstr))
7038 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7039 else
7040 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7041 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7042 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7043 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7044 GvFLAGS(dstr) = GvFLAGS(sstr);
7045 GvGP(dstr) = gp_dup(GvGP(sstr));
7046 (void)GpREFCNT_inc(GvGP(dstr));
7047 break;
7048 case SVt_PVIO:
7049 SvANY(dstr) = new_XPVIO();
7050 SvCUR(dstr) = SvCUR(sstr);
7051 SvLEN(dstr) = SvLEN(sstr);
7052 SvIVX(dstr) = SvIVX(sstr);
7053 SvNVX(dstr) = SvNVX(sstr);
7054 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7055 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7056 if (SvROK(sstr))
7057 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7058 else if (SvPVX(sstr) && SvLEN(sstr))
7059 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7060 else
7061 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7062 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7063 if (IoOFP(sstr) == IoIFP(sstr))
7064 IoOFP(dstr) = IoIFP(dstr);
7065 else
7066 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7067 /* PL_rsfp_filters entries have fake IoDIRP() */
7068 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7069 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7070 else
7071 IoDIRP(dstr) = IoDIRP(sstr);
7072 IoLINES(dstr) = IoLINES(sstr);
7073 IoPAGE(dstr) = IoPAGE(sstr);
7074 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7075 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7076 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7077 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7078 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7079 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7080 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7081 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7082 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7083 IoTYPE(dstr) = IoTYPE(sstr);
7084 IoFLAGS(dstr) = IoFLAGS(sstr);
7085 break;
7086 case SVt_PVAV:
7087 SvANY(dstr) = new_XPVAV();
7088 SvCUR(dstr) = SvCUR(sstr);
7089 SvLEN(dstr) = SvLEN(sstr);
7090 SvIVX(dstr) = SvIVX(sstr);
7091 SvNVX(dstr) = SvNVX(sstr);
7092 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7093 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7094 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7095 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7096 if (AvARRAY((AV*)sstr)) {
7097 SV **dst_ary, **src_ary;
7098 SSize_t items = AvFILLp((AV*)sstr) + 1;
7099
7100 src_ary = AvARRAY((AV*)sstr);
7101 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7102 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7103 SvPVX(dstr) = (char*)dst_ary;
7104 AvALLOC((AV*)dstr) = dst_ary;
7105 if (AvREAL((AV*)sstr)) {
7106 while (items-- > 0)
7107 *dst_ary++ = sv_dup_inc(*src_ary++);
7108 }
7109 else {
7110 while (items-- > 0)
7111 *dst_ary++ = sv_dup(*src_ary++);
7112 }
7113 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7114 while (items-- > 0) {
7115 *dst_ary++ = &PL_sv_undef;
7116 }
7117 }
7118 else {
7119 SvPVX(dstr) = Nullch;
7120 AvALLOC((AV*)dstr) = (SV**)NULL;
7121 }
7122 break;
7123 case SVt_PVHV:
7124 SvANY(dstr) = new_XPVHV();
7125 SvCUR(dstr) = SvCUR(sstr);
7126 SvLEN(dstr) = SvLEN(sstr);
7127 SvIVX(dstr) = SvIVX(sstr);
7128 SvNVX(dstr) = SvNVX(sstr);
7129 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7130 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7131 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7132 if (HvARRAY((HV*)sstr)) {
1d7c1841
GS		 7133 STRLEN i = 0;
7134 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7135 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7136 Newz(0, dxhv->xhv_array,
7137 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7138 while (i <= sxhv->xhv_max) {
7139 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7140 !!HvSHAREKEYS(sstr));
7141 ++i;
7142 }
7143 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7144 }
7145 else {
7146 SvPVX(dstr) = Nullch;
7147 HvEITER((HV*)dstr) = (HE*)NULL;
7148 }
7149 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7150 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7151 break;
7152 case SVt_PVFM:
7153 SvANY(dstr) = new_XPVFM();
7154 FmLINES(dstr) = FmLINES(sstr);
7155 goto dup_pvcv;
7156 /* NOTREACHED */
7157 case SVt_PVCV:
7158 SvANY(dstr) = new_XPVCV();
7159dup_pvcv:
7160 SvCUR(dstr) = SvCUR(sstr);
7161 SvLEN(dstr) = SvLEN(sstr);
7162 SvIVX(dstr) = SvIVX(sstr);
7163 SvNVX(dstr) = SvNVX(sstr);
7164 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7165 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7166 if (SvPVX(sstr) && SvLEN(sstr))
7167 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7168 else
7169 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7170 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7171 CvSTART(dstr) = CvSTART(sstr);
7172 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7173 CvXSUB(dstr) = CvXSUB(sstr);
7174 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7175 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7176 CvDEPTH(dstr) = CvDEPTH(sstr);
7177 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7178 /* XXX padlists are real, but pretend to be not */
7179 AvREAL_on(CvPADLIST(sstr));
7180 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7181 AvREAL_off(CvPADLIST(sstr));
7182 AvREAL_off(CvPADLIST(dstr));
7183 }
7184 else
7185 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7186 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7187 CvFLAGS(dstr) = CvFLAGS(sstr);
7188 break;
7189 default:
7190 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7191 break;
7192 }
7193
7194 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7195 ++PL_sv_objcount;
7196
7197 return dstr;
7198}
7199
7200PERL_CONTEXT *
7201Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7202{
7203 PERL_CONTEXT *ncxs;
7204
7205 if (!cxs)
7206 return (PERL_CONTEXT*)NULL;
7207
7208 /* look for it in the table first */
7209 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7210 if (ncxs)
7211 return ncxs;
7212
7213 /* create anew and remember what it is */
7214 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7215 ptr_table_store(PL_ptr_table, cxs, ncxs);
7216
7217 while (ix >= 0) {
7218 PERL_CONTEXT *cx = &cxs[ix];
7219 PERL_CONTEXT *ncx = &ncxs[ix];
7220 ncx->cx_type = cx->cx_type;
7221 if (CxTYPE(cx) == CXt_SUBST) {
7222 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7223 }
7224 else {
7225 ncx->blk_oldsp = cx->blk_oldsp;
7226 ncx->blk_oldcop = cx->blk_oldcop;
7227 ncx->blk_oldretsp = cx->blk_oldretsp;
7228 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7229 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7230 ncx->blk_oldpm = cx->blk_oldpm;
7231 ncx->blk_gimme = cx->blk_gimme;
7232 switch (CxTYPE(cx)) {
7233 case CXt_SUB:
7234 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7235 ? cv_dup_inc(cx->blk_sub.cv)
7236 : cv_dup(cx->blk_sub.cv));
7237 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7238 ? av_dup_inc(cx->blk_sub.argarray)
7239 : Nullav);
7240 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7241 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7242 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7243 ncx->blk_sub.lval = cx->blk_sub.lval;
7244 break;
7245 case CXt_EVAL:
7246 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7247 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
0f79a09d 7248 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
1d7c1841
GS		 7249 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7250 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7251 break;
7252 case CXt_LOOP:
7253 ncx->blk_loop.label = cx->blk_loop.label;
7254 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7255 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7256 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7257 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7258 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7259 ? cx->blk_loop.iterdata
7260 : gv_dup((GV*)cx->blk_loop.iterdata));
a4b82a6f
GS		 7261 ncx->blk_loop.oldcurpad
7262 = (SV**)ptr_table_fetch(PL_ptr_table,
7263 cx->blk_loop.oldcurpad);
1d7c1841
GS		 7264 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7265 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7266 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7267 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7268 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7269 break;
7270 case CXt_FORMAT:
7271 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7272 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7273 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7274 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7275 break;
7276 case CXt_BLOCK:
7277 case CXt_NULL:
7278 break;
7279 }
7280 }
7281 --ix;
7282 }
7283 return ncxs;
7284}
7285
7286PERL_SI *
7287Perl_si_dup(pTHX_ PERL_SI *si)
7288{
7289 PERL_SI *nsi;
7290
7291 if (!si)
7292 return (PERL_SI*)NULL;
7293
7294 /* look for it in the table first */
7295 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7296 if (nsi)
7297 return nsi;
7298
7299 /* create anew and remember what it is */
7300 Newz(56, nsi, 1, PERL_SI);
7301 ptr_table_store(PL_ptr_table, si, nsi);
7302
7303 nsi->si_stack = av_dup_inc(si->si_stack);
7304 nsi->si_cxix = si->si_cxix;
7305 nsi->si_cxmax = si->si_cxmax;
7306 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7307 nsi->si_type = si->si_type;
7308 nsi->si_prev = si_dup(si->si_prev);
7309 nsi->si_next = si_dup(si->si_next);
7310 nsi->si_markoff = si->si_markoff;
7311
7312 return nsi;
7313}
7314
7315#define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7316#define TOPINT(ss,ix) ((ss)[ix].any_i32)
7317#define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7318#define TOPLONG(ss,ix) ((ss)[ix].any_long)
7319#define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7320#define TOPIV(ss,ix) ((ss)[ix].any_iv)
7321#define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7322#define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7323#define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7324#define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7325#define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7326#define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7327
7328/* XXXXX todo */
7329#define pv_dup_inc(p) SAVEPV(p)
7330#define pv_dup(p) SAVEPV(p)
7331#define svp_dup_inc(p,pp) any_dup(p,pp)
7332
7333void *
7334Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7335{
7336 void *ret;
7337
7338 if (!v)
7339 return (void*)NULL;
7340
7341 /* look for it in the table first */
7342 ret = ptr_table_fetch(PL_ptr_table, v);
7343 if (ret)
7344 return ret;
7345
7346 /* see if it is part of the interpreter structure */
7347 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7348 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7349 else
7350 ret = v;
7351
7352 return ret;
7353}
7354
7355ANY *
7356Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7357{
7358 ANY *ss = proto_perl->Tsavestack;
7359 I32 ix = proto_perl->Tsavestack_ix;
7360 I32 max = proto_perl->Tsavestack_max;
7361 ANY *nss;
7362 SV *sv;
7363 GV *gv;
7364 AV *av;
7365 HV *hv;
7366 void* ptr;
7367 int intval;
7368 long longval;
7369 GP *gp;
7370 IV iv;
7371 I32 i;
7372 char *c;
7373 void (*dptr) (void*);
7374 void (*dxptr) (pTHXo_ void*);
e977893f 7375 OP *o;
1d7c1841
GS		 7376
7377 Newz(54, nss, max, ANY);
7378
7379 while (ix > 0) {
7380 i = POPINT(ss,ix);
7381 TOPINT(nss,ix) = i;
7382 switch (i) {
7383 case SAVEt_ITEM: /* normal string */
7384 sv = (SV*)POPPTR(ss,ix);
7385 TOPPTR(nss,ix) = sv_dup_inc(sv);
7386 sv = (SV*)POPPTR(ss,ix);
7387 TOPPTR(nss,ix) = sv_dup_inc(sv);
7388 break;
7389 case SAVEt_SV: /* scalar reference */
7390 sv = (SV*)POPPTR(ss,ix);
7391 TOPPTR(nss,ix) = sv_dup_inc(sv);
7392 gv = (GV*)POPPTR(ss,ix);
7393 TOPPTR(nss,ix) = gv_dup_inc(gv);
7394 break;
f4dd75d9
GS		 7395 case SAVEt_GENERIC_PVREF: /* generic char* */
7396 c = (char*)POPPTR(ss,ix);
7397 TOPPTR(nss,ix) = pv_dup(c);
7398 ptr = POPPTR(ss,ix);
7399 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7400 break;
1d7c1841
GS		 7401 case SAVEt_GENERIC_SVREF: /* generic sv */
7402 case SAVEt_SVREF: /* scalar reference */
7403 sv = (SV*)POPPTR(ss,ix);
7404 TOPPTR(nss,ix) = sv_dup_inc(sv);
7405 ptr = POPPTR(ss,ix);
7406 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7407 break;
7408 case SAVEt_AV: /* array reference */
7409 av = (AV*)POPPTR(ss,ix);
7410 TOPPTR(nss,ix) = av_dup_inc(av);
7411 gv = (GV*)POPPTR(ss,ix);
7412 TOPPTR(nss,ix) = gv_dup(gv);
7413 break;
7414 case SAVEt_HV: /* hash reference */
7415 hv = (HV*)POPPTR(ss,ix);
7416 TOPPTR(nss,ix) = hv_dup_inc(hv);
7417 gv = (GV*)POPPTR(ss,ix);
7418 TOPPTR(nss,ix) = gv_dup(gv);
7419 break;
7420 case SAVEt_INT: /* int reference */
7421 ptr = POPPTR(ss,ix);
7422 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7423 intval = (int)POPINT(ss,ix);
7424 TOPINT(nss,ix) = intval;
7425 break;
7426 case SAVEt_LONG: /* long reference */
7427 ptr = POPPTR(ss,ix);
7428 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7429 longval = (long)POPLONG(ss,ix);
7430 TOPLONG(nss,ix) = longval;
7431 break;
7432 case SAVEt_I32: /* I32 reference */
7433 case SAVEt_I16: /* I16 reference */
7434 case SAVEt_I8: /* I8 reference */
7435 ptr = POPPTR(ss,ix);
7436 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7437 i = POPINT(ss,ix);
7438 TOPINT(nss,ix) = i;
7439 break;
7440 case SAVEt_IV: /* IV reference */
7441 ptr = POPPTR(ss,ix);
7442 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7443 iv = POPIV(ss,ix);
7444 TOPIV(nss,ix) = iv;
7445 break;
7446 case SAVEt_SPTR: /* SV* reference */
7447 ptr = POPPTR(ss,ix);
7448 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7449 sv = (SV*)POPPTR(ss,ix);
7450 TOPPTR(nss,ix) = sv_dup(sv);
7451 break;
7452 case SAVEt_VPTR: /* random* reference */
7453 ptr = POPPTR(ss,ix);
7454 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7455 ptr = POPPTR(ss,ix);
7456 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7457 break;
7458 case SAVEt_PPTR: /* char* reference */
7459 ptr = POPPTR(ss,ix);
7460 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7461 c = (char*)POPPTR(ss,ix);
7462 TOPPTR(nss,ix) = pv_dup(c);
7463 break;
7464 case SAVEt_HPTR: /* HV* reference */
7465 ptr = POPPTR(ss,ix);
7466 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7467 hv = (HV*)POPPTR(ss,ix);
7468 TOPPTR(nss,ix) = hv_dup(hv);
7469 break;
7470 case SAVEt_APTR: /* AV* reference */
7471 ptr = POPPTR(ss,ix);
7472 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7473 av = (AV*)POPPTR(ss,ix);
7474 TOPPTR(nss,ix) = av_dup(av);
7475 break;
7476 case SAVEt_NSTAB:
7477 gv = (GV*)POPPTR(ss,ix);
7478 TOPPTR(nss,ix) = gv_dup(gv);
7479 break;
7480 case SAVEt_GP: /* scalar reference */
7481 gp = (GP*)POPPTR(ss,ix);
7482 TOPPTR(nss,ix) = gp = gp_dup(gp);
7483 (void)GpREFCNT_inc(gp);
7484 gv = (GV*)POPPTR(ss,ix);
7485 TOPPTR(nss,ix) = gv_dup_inc(c);
7486 c = (char*)POPPTR(ss,ix);
7487 TOPPTR(nss,ix) = pv_dup(c);
7488 iv = POPIV(ss,ix);
7489 TOPIV(nss,ix) = iv;
7490 iv = POPIV(ss,ix);
7491 TOPIV(nss,ix) = iv;
7492 break;
7493 case SAVEt_FREESV:
7494 sv = (SV*)POPPTR(ss,ix);
7495 TOPPTR(nss,ix) = sv_dup_inc(sv);
7496 break;
7497 case SAVEt_FREEOP:
7498 ptr = POPPTR(ss,ix);
7499 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7500 /* these are assumed to be refcounted properly */
7501 switch (((OP*)ptr)->op_type) {
7502 case OP_LEAVESUB:
7503 case OP_LEAVESUBLV:
7504 case OP_LEAVEEVAL:
7505 case OP_LEAVE:
7506 case OP_SCOPE:
7507 case OP_LEAVEWRITE:
e977893f
GS		 7508 TOPPTR(nss,ix) = ptr;
7509 o = (OP*)ptr;
7510 OpREFCNT_inc(o);
1d7c1841
GS		 7511 break;
7512 default:
7513 TOPPTR(nss,ix) = Nullop;
7514 break;
7515 }
7516 }
7517 else
7518 TOPPTR(nss,ix) = Nullop;
7519 break;
7520 case SAVEt_FREEPV:
7521 c = (char*)POPPTR(ss,ix);
7522 TOPPTR(nss,ix) = pv_dup_inc(c);
7523 break;
7524 case SAVEt_CLEARSV:
7525 longval = POPLONG(ss,ix);
7526 TOPLONG(nss,ix) = longval;
7527 break;
7528 case SAVEt_DELETE:
7529 hv = (HV*)POPPTR(ss,ix);
7530 TOPPTR(nss,ix) = hv_dup_inc(hv);
7531 c = (char*)POPPTR(ss,ix);
7532 TOPPTR(nss,ix) = pv_dup_inc(c);
7533 i = POPINT(ss,ix);
7534 TOPINT(nss,ix) = i;
7535 break;
7536 case SAVEt_DESTRUCTOR:
7537 ptr = POPPTR(ss,ix);
7538 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7539 dptr = POPDPTR(ss,ix);
ef75a179 7540 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
1d7c1841
GS		 7541 break;
7542 case SAVEt_DESTRUCTOR_X:
7543 ptr = POPPTR(ss,ix);
7544 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7545 dxptr = POPDXPTR(ss,ix);
ef75a179 7546 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
1d7c1841
GS		 7547 break;
7548 case SAVEt_REGCONTEXT:
7549 case SAVEt_ALLOC:
7550 i = POPINT(ss,ix);
7551 TOPINT(nss,ix) = i;
7552 ix -= i;
7553 break;
7554 case SAVEt_STACK_POS: /* Position on Perl stack */
7555 i = POPINT(ss,ix);
7556 TOPINT(nss,ix) = i;
7557 break;
7558 case SAVEt_AELEM: /* array element */
7559 sv = (SV*)POPPTR(ss,ix);
7560 TOPPTR(nss,ix) = sv_dup_inc(sv);
7561 i = POPINT(ss,ix);
7562 TOPINT(nss,ix) = i;
7563 av = (AV*)POPPTR(ss,ix);
7564 TOPPTR(nss,ix) = av_dup_inc(av);
7565 break;
7566 case SAVEt_HELEM: /* hash element */
7567 sv = (SV*)POPPTR(ss,ix);
7568 TOPPTR(nss,ix) = sv_dup_inc(sv);
7569 sv = (SV*)POPPTR(ss,ix);
7570 TOPPTR(nss,ix) = sv_dup_inc(sv);
7571 hv = (HV*)POPPTR(ss,ix);
7572 TOPPTR(nss,ix) = hv_dup_inc(hv);
7573 break;
7574 case SAVEt_OP:
7575 ptr = POPPTR(ss,ix);
7576 TOPPTR(nss,ix) = ptr;
7577 break;
7578 case SAVEt_HINTS:
7579 i = POPINT(ss,ix);
7580 TOPINT(nss,ix) = i;
7581 break;
c4410b1b
GS		 7582 case SAVEt_COMPPAD:
7583 av = (AV*)POPPTR(ss,ix);
7584 TOPPTR(nss,ix) = av_dup(av);
7585 break;
1d7c1841
GS		 7586 default:
7587 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7588 }
7589 }
7590
7591 return nss;
7592}
7593
7594#ifdef PERL_OBJECT
7595#include "XSUB.h"
7596#endif
7597
7598PerlInterpreter *
7599perl_clone(PerlInterpreter *proto_perl, UV flags)
7600{
7601#ifdef PERL_OBJECT
7602 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7603#endif
7604
7605#ifdef PERL_IMPLICIT_SYS
7606 return perl_clone_using(proto_perl, flags,
7607 proto_perl->IMem,
7608 proto_perl->IMemShared,
7609 proto_perl->IMemParse,
7610 proto_perl->IEnv,
7611 proto_perl->IStdIO,
7612 proto_perl->ILIO,
7613 proto_perl->IDir,
7614 proto_perl->ISock,
7615 proto_perl->IProc);
7616}
7617
7618PerlInterpreter *
7619perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7620 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7621 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7622 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7623 struct IPerlDir* ipD, struct IPerlSock* ipS,
7624 struct IPerlProc* ipP)
7625{
7626 /* XXX many of the string copies here can be optimized if they're
7627 * constants; they need to be allocated as common memory and just
7628 * their pointers copied. */
7629
7630 IV i;
1d7c1841
GS		 7631# ifdef PERL_OBJECT
7632 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7633 ipD, ipS, ipP);
ba869deb 7634 PERL_SET_THX(pPerl);
1d7c1841
GS		 7635# else /* !PERL_OBJECT */
7636 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
ba869deb 7637 PERL_SET_THX(my_perl);
1d7c1841
GS		 7638
7639# ifdef DEBUGGING
7640 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7641 PL_markstack = 0;
7642 PL_scopestack = 0;
7643 PL_savestack = 0;
7644 PL_retstack = 0;
7645# else /* !DEBUGGING */
7646 Zero(my_perl, 1, PerlInterpreter);
7647# endif /* DEBUGGING */
7648
7649 /* host pointers */
7650 PL_Mem = ipM;
7651 PL_MemShared = ipMS;
7652 PL_MemParse = ipMP;
7653 PL_Env = ipE;
7654 PL_StdIO = ipStd;
7655 PL_LIO = ipLIO;
7656 PL_Dir = ipD;
7657 PL_Sock = ipS;
7658 PL_Proc = ipP;
7659# endif /* PERL_OBJECT */
7660#else /* !PERL_IMPLICIT_SYS */
7661 IV i;
1d7c1841 7662 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 7663 PERL_SET_THX(my_perl);
1d7c1841
GS		 7664
7665# ifdef DEBUGGING
7666 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7667 PL_markstack = 0;
7668 PL_scopestack = 0;
7669 PL_savestack = 0;
7670 PL_retstack = 0;
7671# else /* !DEBUGGING */
7672 Zero(my_perl, 1, PerlInterpreter);
7673# endif /* DEBUGGING */
7674#endif /* PERL_IMPLICIT_SYS */
7675
7676 /* arena roots */
7677 PL_xiv_arenaroot = NULL;
7678 PL_xiv_root = NULL;
612f20c3 7679 PL_xnv_arenaroot = NULL;
1d7c1841 7680 PL_xnv_root = NULL;
612f20c3 7681 PL_xrv_arenaroot = NULL;
1d7c1841 7682 PL_xrv_root = NULL;
612f20c3 7683 PL_xpv_arenaroot = NULL;
1d7c1841 7684 PL_xpv_root = NULL;
612f20c3 7685 PL_xpviv_arenaroot = NULL;
1d7c1841 7686 PL_xpviv_root = NULL;
612f20c3 7687 PL_xpvnv_arenaroot = NULL;
1d7c1841 7688 PL_xpvnv_root = NULL;
612f20c3 7689 PL_xpvcv_arenaroot = NULL;
1d7c1841 7690 PL_xpvcv_root = NULL;
612f20c3 7691 PL_xpvav_arenaroot = NULL;
1d7c1841 7692 PL_xpvav_root = NULL;
612f20c3 7693 PL_xpvhv_arenaroot = NULL;
1d7c1841 7694 PL_xpvhv_root = NULL;
612f20c3 7695 PL_xpvmg_arenaroot = NULL;
1d7c1841 7696 PL_xpvmg_root = NULL;
612f20c3 7697 PL_xpvlv_arenaroot = NULL;
1d7c1841 7698 PL_xpvlv_root = NULL;
612f20c3 7699 PL_xpvbm_arenaroot = NULL;
1d7c1841 7700 PL_xpvbm_root = NULL;
612f20c3 7701 PL_he_arenaroot = NULL;
1d7c1841
GS		 7702 PL_he_root = NULL;
7703 PL_nice_chunk = NULL;
7704 PL_nice_chunk_size = 0;
7705 PL_sv_count = 0;
7706 PL_sv_objcount = 0;
7707 PL_sv_root = Nullsv;
7708 PL_sv_arenaroot = Nullsv;
7709
7710 PL_debug = proto_perl->Idebug;
7711
7712 /* create SV map for pointer relocation */
7713 PL_ptr_table = ptr_table_new();
7714
7715 /* initialize these special pointers as early as possible */
7716 SvANY(&PL_sv_undef) = NULL;
7717 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7718 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7719 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7720
7721#ifdef PERL_OBJECT
7722 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7723#else
7724 SvANY(&PL_sv_no) = new_XPVNV();
7725#endif
7726 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7727 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7728 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7729 SvCUR(&PL_sv_no) = 0;
7730 SvLEN(&PL_sv_no) = 1;
7731 SvNVX(&PL_sv_no) = 0;
7732 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7733
7734#ifdef PERL_OBJECT
7735 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7736#else
7737 SvANY(&PL_sv_yes) = new_XPVNV();
7738#endif
7739 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7740 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7741 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7742 SvCUR(&PL_sv_yes) = 1;
7743 SvLEN(&PL_sv_yes) = 2;
7744 SvNVX(&PL_sv_yes) = 1;
7745 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7746
7747 /* create shared string table */
7748 PL_strtab = newHV();
7749 HvSHAREKEYS_off(PL_strtab);
7750 hv_ksplit(PL_strtab, 512);
7751 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7752
7753 PL_compiling = proto_perl->Icompiling;
7754 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7755 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7756 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7757 if (!specialWARN(PL_compiling.cop_warnings))
7758 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7759 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7760
7761 /* pseudo environmental stuff */
7762 PL_origargc = proto_perl->Iorigargc;
7763 i = PL_origargc;
7764 New(0, PL_origargv, i+1, char*);
7765 PL_origargv[i] = '\0';
7766 while (i-- > 0) {
7767 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7768 }
7769 PL_envgv = gv_dup(proto_perl->Ienvgv);
7770 PL_incgv = gv_dup(proto_perl->Iincgv);
7771 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7772 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7773 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7774 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7775
7776 /* switches */
7777 PL_minus_c = proto_perl->Iminus_c;
a7cb1f99 7778 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
1d7c1841
GS		 7779 PL_localpatches = proto_perl->Ilocalpatches;
7780 PL_splitstr = proto_perl->Isplitstr;
7781 PL_preprocess = proto_perl->Ipreprocess;
7782 PL_minus_n = proto_perl->Iminus_n;
7783 PL_minus_p = proto_perl->Iminus_p;
7784 PL_minus_l = proto_perl->Iminus_l;
7785 PL_minus_a = proto_perl->Iminus_a;
7786 PL_minus_F = proto_perl->Iminus_F;
7787 PL_doswitches = proto_perl->Idoswitches;
7788 PL_dowarn = proto_perl->Idowarn;
7789 PL_doextract = proto_perl->Idoextract;
7790 PL_sawampersand = proto_perl->Isawampersand;
7791 PL_unsafe = proto_perl->Iunsafe;
7792 PL_inplace = SAVEPV(proto_perl->Iinplace);
7793 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7794 PL_perldb = proto_perl->Iperldb;
7795 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7796
7797 /* magical thingies */
7798 /* XXX time(&PL_basetime) when asked for? */
7799 PL_basetime = proto_perl->Ibasetime;
7800 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7801
7802 PL_maxsysfd = proto_perl->Imaxsysfd;
7803 PL_multiline = proto_perl->Imultiline;
7804 PL_statusvalue = proto_perl->Istatusvalue;
7805#ifdef VMS
7806 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7807#endif
7808
7809 /* shortcuts to various I/O objects */
7810 PL_stdingv = gv_dup(proto_perl->Istdingv);
7811 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7812 PL_defgv = gv_dup(proto_perl->Idefgv);
7813 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7814 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7815 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7816
7817 /* shortcuts to regexp stuff */
7818 PL_replgv = gv_dup(proto_perl->Ireplgv);
7819
7820 /* shortcuts to misc objects */
7821 PL_errgv = gv_dup(proto_perl->Ierrgv);
7822
7823 /* shortcuts to debugging objects */
7824 PL_DBgv = gv_dup(proto_perl->IDBgv);
7825 PL_DBline = gv_dup(proto_perl->IDBline);
7826 PL_DBsub = gv_dup(proto_perl->IDBsub);
7827 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7828 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7829 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7830 PL_lineary = av_dup(proto_perl->Ilineary);
7831 PL_dbargs = av_dup(proto_perl->Idbargs);
7832
7833 /* symbol tables */
7834 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7835 PL_curstash = hv_dup(proto_perl->Tcurstash);
7836 PL_debstash = hv_dup(proto_perl->Idebstash);
7837 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7838 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7839
7840 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7841 PL_endav = av_dup_inc(proto_perl->Iendav);
7d30b5c4 7842 PL_checkav = av_dup_inc(proto_perl->Icheckav);
1d7c1841
GS		 7843 PL_initav = av_dup_inc(proto_perl->Iinitav);
7844
7845 PL_sub_generation = proto_perl->Isub_generation;
7846
7847 /* funky return mechanisms */
7848 PL_forkprocess = proto_perl->Iforkprocess;
7849
7850 /* subprocess state */
7851 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7852
7853 /* internal state */
7854 PL_tainting = proto_perl->Itainting;
7855 PL_maxo = proto_perl->Imaxo;
7856 if (proto_perl->Iop_mask)
7857 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7858 else
7859 PL_op_mask = Nullch;
7860
7861 /* current interpreter roots */
7862 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7863 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7864 PL_main_start = proto_perl->Imain_start;
e977893f 7865 PL_eval_root = proto_perl->Ieval_root;
1d7c1841
GS		 7866 PL_eval_start = proto_perl->Ieval_start;
7867
7868 /* runtime control stuff */
7869 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7870 PL_copline = proto_perl->Icopline;
7871
7872 PL_filemode = proto_perl->Ifilemode;
7873 PL_lastfd = proto_perl->Ilastfd;
7874 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7875 PL_Argv = NULL;
7876 PL_Cmd = Nullch;
7877 PL_gensym = proto_perl->Igensym;
7878 PL_preambled = proto_perl->Ipreambled;
7879 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7880 PL_laststatval = proto_perl->Ilaststatval;
7881 PL_laststype = proto_perl->Ilaststype;
7882 PL_mess_sv = Nullsv;
7883
7884 PL_orslen = proto_perl->Iorslen;
7885 PL_ors = SAVEPVN(proto_perl->Iors, PL_orslen);
7886 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7887
7888 /* interpreter atexit processing */
7889 PL_exitlistlen = proto_perl->Iexitlistlen;
7890 if (PL_exitlistlen) {
7891 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7892 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7893 }
7894 else
7895 PL_exitlist = (PerlExitListEntry*)NULL;
7896 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7897
7898 PL_profiledata = NULL;
7899 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7900 /* PL_rsfp_filters entries have fake IoDIRP() */
7901 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7902
7903 PL_compcv = cv_dup(proto_perl->Icompcv);
7904 PL_comppad = av_dup(proto_perl->Icomppad);
7905 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7906 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7907 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
7908 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
7909 proto_perl->Tcurpad);
7910
7911#ifdef HAVE_INTERP_INTERN
7912 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
7913#endif
7914
7915 /* more statics moved here */
7916 PL_generation = proto_perl->Igeneration;
7917 PL_DBcv = cv_dup(proto_perl->IDBcv);
1d7c1841
GS		 7918
7919 PL_in_clean_objs = proto_perl->Iin_clean_objs;
7920 PL_in_clean_all = proto_perl->Iin_clean_all;
7921
7922 PL_uid = proto_perl->Iuid;
7923 PL_euid = proto_perl->Ieuid;
7924 PL_gid = proto_perl->Igid;
7925 PL_egid = proto_perl->Iegid;
7926 PL_nomemok = proto_perl->Inomemok;
7927 PL_an = proto_perl->Ian;
7928 PL_cop_seqmax = proto_perl->Icop_seqmax;
7929 PL_op_seqmax = proto_perl->Iop_seqmax;
7930 PL_evalseq = proto_perl->Ievalseq;
7931 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
7932 PL_origalen = proto_perl->Iorigalen;
7933 PL_pidstatus = newHV(); /* XXX flag for cloning? */
7934 PL_osname = SAVEPV(proto_perl->Iosname);
7935 PL_sh_path = SAVEPV(proto_perl->Ish_path);
7936 PL_sighandlerp = proto_perl->Isighandlerp;
7937
7938
7939 PL_runops = proto_perl->Irunops;
7940
7941 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
7942
7943#ifdef CSH
7944 PL_cshlen = proto_perl->Icshlen;
7945 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
7946#endif
7947
7948 PL_lex_state = proto_perl->Ilex_state;
7949 PL_lex_defer = proto_perl->Ilex_defer;
7950 PL_lex_expect = proto_perl->Ilex_expect;
7951 PL_lex_formbrack = proto_perl->Ilex_formbrack;
7952 PL_lex_dojoin = proto_perl->Ilex_dojoin;
7953 PL_lex_starts = proto_perl->Ilex_starts;
7954 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
7955 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
7956 PL_lex_op = proto_perl->Ilex_op;
7957 PL_lex_inpat = proto_perl->Ilex_inpat;
7958 PL_lex_inwhat = proto_perl->Ilex_inwhat;
7959 PL_lex_brackets = proto_perl->Ilex_brackets;
7960 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
7961 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
7962 PL_lex_casemods = proto_perl->Ilex_casemods;
7963 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
7964 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
7965
7966 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
7967 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
7968 PL_nexttoke = proto_perl->Inexttoke;
7969
7970 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
7971 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
7972 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
7973 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
7974 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
7975 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
7976 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
7977 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
7978 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
7979 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
7980 PL_pending_ident = proto_perl->Ipending_ident;
7981 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
7982
7983 PL_expect = proto_perl->Iexpect;
7984
7985 PL_multi_start = proto_perl->Imulti_start;
7986 PL_multi_end = proto_perl->Imulti_end;
7987 PL_multi_open = proto_perl->Imulti_open;
7988 PL_multi_close = proto_perl->Imulti_close;
7989
7990 PL_error_count = proto_perl->Ierror_count;
7991 PL_subline = proto_perl->Isubline;
7992 PL_subname = sv_dup_inc(proto_perl->Isubname);
7993
7994 PL_min_intro_pending = proto_perl->Imin_intro_pending;
7995 PL_max_intro_pending = proto_perl->Imax_intro_pending;
7996 PL_padix = proto_perl->Ipadix;
7997 PL_padix_floor = proto_perl->Ipadix_floor;
7998 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
7999
8000 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8001 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8002 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8003 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8004 PL_last_lop_op = proto_perl->Ilast_lop_op;
8005 PL_in_my = proto_perl->Iin_my;
8006 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8007#ifdef FCRYPT
8008 PL_cryptseen = proto_perl->Icryptseen;
8009#endif
8010
8011 PL_hints = proto_perl->Ihints;
8012
8013 PL_amagic_generation = proto_perl->Iamagic_generation;
8014
8015#ifdef USE_LOCALE_COLLATE
8016 PL_collation_ix = proto_perl->Icollation_ix;
8017 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8018 PL_collation_standard = proto_perl->Icollation_standard;
8019 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8020 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8021#endif /* USE_LOCALE_COLLATE */
8022
8023#ifdef USE_LOCALE_NUMERIC
8024 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8025 PL_numeric_standard = proto_perl->Inumeric_standard;
8026 PL_numeric_local = proto_perl->Inumeric_local;
8027 PL_numeric_radix = proto_perl->Inumeric_radix;
8028#endif /* !USE_LOCALE_NUMERIC */
8029
8030 /* utf8 character classes */
8031 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8032 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8033 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8034 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8035 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8036 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8037 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8038 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8039 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8040 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8041 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8042 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8043 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8044 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8045 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8046 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8047 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8048
8049 /* swatch cache */
8050 PL_last_swash_hv = Nullhv; /* reinits on demand */
8051 PL_last_swash_klen = 0;
8052 PL_last_swash_key[0]= '\0';
8053 PL_last_swash_tmps = (U8*)NULL;
8054 PL_last_swash_slen = 0;
8055
8056 /* perly.c globals */
8057 PL_yydebug = proto_perl->Iyydebug;
8058 PL_yynerrs = proto_perl->Iyynerrs;
8059 PL_yyerrflag = proto_perl->Iyyerrflag;
8060 PL_yychar = proto_perl->Iyychar;
8061 PL_yyval = proto_perl->Iyyval;
8062 PL_yylval = proto_perl->Iyylval;
8063
8064 PL_glob_index = proto_perl->Iglob_index;
8065 PL_srand_called = proto_perl->Isrand_called;
8066 PL_uudmap['M'] = 0; /* reinits on demand */
8067 PL_bitcount = Nullch; /* reinits on demand */
8068
8069 if (proto_perl->Ipsig_ptr) {
8070 int sig_num[] = { SIG_NUM };
8071 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8072 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8073 for (i = 1; PL_sig_name[i]; i++) {
8074 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8075 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8076 }
8077 }
8078 else {
8079 PL_psig_ptr = (SV**)NULL;
8080 PL_psig_name = (SV**)NULL;
8081 }
8082
8083 /* thrdvar.h stuff */
8084
8085 if (flags & 1) {
8086 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8087 PL_tmps_ix = proto_perl->Ttmps_ix;
8088 PL_tmps_max = proto_perl->Ttmps_max;
8089 PL_tmps_floor = proto_perl->Ttmps_floor;
8090 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8091 i = 0;
8092 while (i <= PL_tmps_ix) {
8093 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8094 ++i;
8095 }
8096
8097 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8098 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8099 Newz(54, PL_markstack, i, I32);
8100 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8101 - proto_perl->Tmarkstack);
8102 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8103 - proto_perl->Tmarkstack);
8104 Copy(proto_perl->Tmarkstack, PL_markstack,
8105 PL_markstack_ptr - PL_markstack + 1, I32);
8106
8107 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8108 * NOTE: unlike the others! */
8109 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8110 PL_scopestack_max = proto_perl->Tscopestack_max;
8111 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8112 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8113
8114 /* next push_return() sets PL_retstack[PL_retstack_ix]
8115 * NOTE: unlike the others! */
8116 PL_retstack_ix = proto_perl->Tretstack_ix;
8117 PL_retstack_max = proto_perl->Tretstack_max;
8118 Newz(54, PL_retstack, PL_retstack_max, OP*);
8119 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8120
8121 /* NOTE: si_dup() looks at PL_markstack */
8122 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8123
8124 /* PL_curstack = PL_curstackinfo->si_stack; */
8125 PL_curstack = av_dup(proto_perl->Tcurstack);
8126 PL_mainstack = av_dup(proto_perl->Tmainstack);
8127
8128 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8129 PL_stack_base = AvARRAY(PL_curstack);
8130 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8131 - proto_perl->Tstack_base);
8132 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8133
8134 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8135 * NOTE: unlike the others! */
8136 PL_savestack_ix = proto_perl->Tsavestack_ix;
8137 PL_savestack_max = proto_perl->Tsavestack_max;
8138 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8139 PL_savestack = ss_dup(proto_perl);
8140 }
8141 else {
8142 init_stacks();
985e7056 8143 ENTER; /* perl_destruct() wants to LEAVE; */
1d7c1841
GS		 8144 }
8145
8146 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8147 PL_top_env = &PL_start_env;
8148
8149 PL_op = proto_perl->Top;
8150
8151 PL_Sv = Nullsv;
8152 PL_Xpv = (XPV*)NULL;
8153 PL_na = proto_perl->Tna;
8154
8155 PL_statbuf = proto_perl->Tstatbuf;
8156 PL_statcache = proto_perl->Tstatcache;
8157 PL_statgv = gv_dup(proto_perl->Tstatgv);
8158 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8159#ifdef HAS_TIMES
8160 PL_timesbuf = proto_perl->Ttimesbuf;
8161#endif
8162
8163 PL_tainted = proto_perl->Ttainted;
8164 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8165 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8166 PL_rs = sv_dup_inc(proto_perl->Trs);
8167 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8168 PL_ofslen = proto_perl->Tofslen;
8169 PL_ofs = SAVEPVN(proto_perl->Tofs, PL_ofslen);
8170 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8171 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8172 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8173 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8174 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8175
8176 PL_restartop = proto_perl->Trestartop;
8177 PL_in_eval = proto_perl->Tin_eval;
8178 PL_delaymagic = proto_perl->Tdelaymagic;
8179 PL_dirty = proto_perl->Tdirty;
8180 PL_localizing = proto_perl->Tlocalizing;
8181
14dd3ad8 8182#ifdef PERL_FLEXIBLE_EXCEPTIONS
1d7c1841 8183 PL_protect = proto_perl->Tprotect;
14dd3ad8 8184#endif
1d7c1841
GS		 8185 PL_errors = sv_dup_inc(proto_perl->Terrors);
8186 PL_av_fetch_sv = Nullsv;
8187 PL_hv_fetch_sv = Nullsv;
8188 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8189 PL_modcount = proto_perl->Tmodcount;
8190 PL_lastgotoprobe = Nullop;
8191 PL_dumpindent = proto_perl->Tdumpindent;
8192
8193 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8194 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8195 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8196 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8197 PL_sortcxix = proto_perl->Tsortcxix;
8198 PL_efloatbuf = Nullch; /* reinits on demand */
8199 PL_efloatsize = 0; /* reinits on demand */
8200
8201 /* regex stuff */
8202
8203 PL_screamfirst = NULL;
8204 PL_screamnext = NULL;
8205 PL_maxscream = -1; /* reinits on demand */
8206 PL_lastscream = Nullsv;
8207
8208 PL_watchaddr = NULL;
8209 PL_watchok = Nullch;
8210
8211 PL_regdummy = proto_perl->Tregdummy;
8212 PL_regcomp_parse = Nullch;
8213 PL_regxend = Nullch;
8214 PL_regcode = (regnode*)NULL;
8215 PL_regnaughty = 0;
8216 PL_regsawback = 0;
8217 PL_regprecomp = Nullch;
8218 PL_regnpar = 0;
8219 PL_regsize = 0;
8220 PL_regflags = 0;
8221 PL_regseen = 0;
8222 PL_seen_zerolen = 0;
8223 PL_seen_evals = 0;
8224 PL_regcomp_rx = (regexp*)NULL;
8225 PL_extralen = 0;
8226 PL_colorset = 0; /* reinits PL_colors[] */
8227 /*PL_colors[6] = {0,0,0,0,0,0};*/
8228 PL_reg_whilem_seen = 0;
8229 PL_reginput = Nullch;
8230 PL_regbol = Nullch;
8231 PL_regeol = Nullch;
8232 PL_regstartp = (I32*)NULL;
8233 PL_regendp = (I32*)NULL;
8234 PL_reglastparen = (U32*)NULL;
8235 PL_regtill = Nullch;
8236 PL_regprev = '\n';
8237 PL_reg_start_tmp = (char**)NULL;
8238 PL_reg_start_tmpl = 0;
8239 PL_regdata = (struct reg_data*)NULL;
8240 PL_bostr = Nullch;
8241 PL_reg_flags = 0;
8242 PL_reg_eval_set = 0;
8243 PL_regnarrate = 0;
8244 PL_regprogram = (regnode*)NULL;
8245 PL_regindent = 0;
8246 PL_regcc = (CURCUR*)NULL;
8247 PL_reg_call_cc = (struct re_cc_state*)NULL;
8248 PL_reg_re = (regexp*)NULL;
8249 PL_reg_ganch = Nullch;
8250 PL_reg_sv = Nullsv;
8251 PL_reg_magic = (MAGIC*)NULL;
8252 PL_reg_oldpos = 0;
8253 PL_reg_oldcurpm = (PMOP*)NULL;
8254 PL_reg_curpm = (PMOP*)NULL;
8255 PL_reg_oldsaved = Nullch;
8256 PL_reg_oldsavedlen = 0;
8257 PL_reg_maxiter = 0;
8258 PL_reg_leftiter = 0;
8259 PL_reg_poscache = Nullch;
8260 PL_reg_poscache_size= 0;
8261
8262 /* RE engine - function pointers */
8263 PL_regcompp = proto_perl->Tregcompp;
8264 PL_regexecp = proto_perl->Tregexecp;
8265 PL_regint_start = proto_perl->Tregint_start;
8266 PL_regint_string = proto_perl->Tregint_string;
8267 PL_regfree = proto_perl->Tregfree;
8268
8269 PL_reginterp_cnt = 0;
8270 PL_reg_starttry = 0;
8271
8272#ifdef PERL_OBJECT
8273 return (PerlInterpreter*)pPerl;
8274#else
8275 return my_perl;
8276#endif
8277}
8278
8279#else /* !USE_ITHREADS */
51371543
GS		 8280
8281#ifdef PERL_OBJECT
51371543
GS		 8282#include "XSUB.h"
8283#endif
8284
1d7c1841
GS		 8285#endif /* USE_ITHREADS */
8286
51371543
GS		 8287static void
8288do_report_used(pTHXo_ SV *sv)
8289{
8290 if (SvTYPE(sv) != SVTYPEMASK) {
bf49b057 8291 PerlIO_printf(Perl_debug_log, "****\n");
51371543
GS		 8292 sv_dump(sv);
8293 }
8294}
8295
8296static void
8297do_clean_objs(pTHXo_ SV *sv)
8298{
8299 SV* rv;
8300
8301 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8302 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8303 SvROK_off(sv);
8304 SvRV(sv) = 0;
8305 SvREFCNT_dec(rv);
8306 }
8307
8308 /* XXX Might want to check arrays, etc. */
8309}
8310
8311#ifndef DISABLE_DESTRUCTOR_KLUDGE
8312static void
8313do_clean_named_objs(pTHXo_ SV *sv)
8314{
f472eb5c 8315 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
51371543 8316 if ( SvOBJECT(GvSV(sv)) ||
155aba94
GS		 8317 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8318 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8319 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8320 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
51371543
GS		 8321 {
8322 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8323 SvREFCNT_dec(sv);
8324 }
8325 }
8326}
8327#endif
8328
8329static void
8330do_clean_all(pTHXo_ SV *sv)
8331{
1d7c1841 8332 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
51371543
GS		 8333 SvFLAGS(sv) |= SVf_BREAK;
8334 SvREFCNT_dec(sv);
8335}
8336
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