This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
https://perl5.git.perl.org / perl5.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
fixes for Pod::Html issues (from Wolfgang Laun
[perl5.git] / util.c
CommitLineData
a0d0e21e 1/* util.c
a687059c 2 *
3818b22b 3 * Copyright (c) 1991-2000, Larry Wall
a687059c 4 *
d48672a2
LW		 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.
8d063cd8 7 *
8d063cd8 8 */
a0d0e21e
LW		 9
10/*
11 * "Very useful, no doubt, that was to Saruman; yet it seems that he was
12 * not content." --Gandalf
13 */
8d063cd8 14
8d063cd8 15#include "EXTERN.h"
864dbfa3 16#define PERL_IN_UTIL_C
8d063cd8 17#include "perl.h"
62b28dd9 18
e1dfb34b 19#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
a687059c 20#include <signal.h>
62b28dd9 21#endif
a687059c 22
36477c24 23#ifndef SIG_ERR
24# define SIG_ERR ((Sighandler_t) -1)
25#endif
26
bd4080b3 27/* XXX If this causes problems, set i_unistd=undef in the hint file. */
85e6fe83 28#ifdef I_UNISTD
8990e307
LW		 29# include <unistd.h>
30#endif
31
a687059c
LW		 32#ifdef I_VFORK
33# include <vfork.h>
34#endif
35
94b6baf5
AD		 36/* Put this after #includes because fork and vfork prototypes may
37 conflict.
38*/
39#ifndef HAS_VFORK
40# define vfork fork
41#endif
42
fe14fcc3
LW		 43#ifdef I_FCNTL
44# include <fcntl.h>
45#endif
46#ifdef I_SYS_FILE
47# include <sys/file.h>
48#endif
49
ff68c719 50#ifdef I_SYS_WAIT
51# include <sys/wait.h>
52#endif
53
097ee67d
JH		 54#ifdef I_LOCALE
55# include <locale.h>
56#endif
57
8d063cd8 58#define FLUSH
8d063cd8 59
a0d0e21e 60#ifdef LEAKTEST
a0d0e21e 61
8c52afec
IZ		 62long xcount[MAXXCOUNT];
63long lastxcount[MAXXCOUNT];
64long xycount[MAXXCOUNT][MAXYCOUNT];
65long lastxycount[MAXXCOUNT][MAXYCOUNT];
66
a0d0e21e 67#endif
a863c7d1 68
16cebae2
GS		 69#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
70# define FD_CLOEXEC 1 /* NeXT needs this */
71#endif
72
f2517201 73/* paranoid version of system's malloc() */
8d063cd8 74
a687059c
LW		 75/* NOTE: Do not call the next three routines directly. Use the macros
76 * in handy.h, so that we can easily redefine everything to do tracking of
77 * allocated hunks back to the original New to track down any memory leaks.
20cec16a 78 * XXX This advice seems to be widely ignored :-( --AD August 1996.
a687059c
LW		 79 */
80
bd4080b3 81Malloc_t
4f63d024 82Perl_safesysmalloc(MEM_SIZE size)
8d063cd8 83{
54aff467 84 dTHX;
bd4080b3 85 Malloc_t ptr;
55497cff 86#ifdef HAS_64K_LIMIT
62b28dd9 87 if (size > 0xffff) {
bf49b057 88 PerlIO_printf(Perl_error_log,
16cebae2 89 "Allocation too large: %lx\n", size) FLUSH;
54aff467 90 my_exit(1);
62b28dd9 91 }
55497cff 92#endif /* HAS_64K_LIMIT */
34de22dd
LW		 93#ifdef DEBUGGING
94 if ((long)size < 0)
4f63d024 95 Perl_croak_nocontext("panic: malloc");
34de22dd 96#endif
6ad3d225 97 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
da927450 98 PERL_ALLOC_CHECK(ptr);
97835f67 99 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
8d063cd8
LW		 100 if (ptr != Nullch)
101 return ptr;
3280af22 102 else if (PL_nomemok)
7c0587c8 103 return Nullch;
8d063cd8 104 else {
bf49b057 105 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 106 my_exit(1);
4e35701f 107 return Nullch;
8d063cd8
LW		 108 }
109 /*NOTREACHED*/
110}
111
f2517201 112/* paranoid version of system's realloc() */
8d063cd8 113
bd4080b3 114Malloc_t
4f63d024 115Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 116{
54aff467 117 dTHX;
bd4080b3 118 Malloc_t ptr;
ecfc5424 119#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
6ad3d225 120 Malloc_t PerlMem_realloc();
ecfc5424 121#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 122
55497cff 123#ifdef HAS_64K_LIMIT
5f05dabc 124 if (size > 0xffff) {
bf49b057 125 PerlIO_printf(Perl_error_log,
5f05dabc 126 "Reallocation too large: %lx\n", size) FLUSH;
54aff467 127 my_exit(1);
5f05dabc 128 }
55497cff 129#endif /* HAS_64K_LIMIT */
7614df0c 130 if (!size) {
f2517201 131 safesysfree(where);
7614df0c
JD		 132 return NULL;
133 }
134
378cc40b 135 if (!where)
f2517201 136 return safesysmalloc(size);
34de22dd
LW		 137#ifdef DEBUGGING
138 if ((long)size < 0)
4f63d024 139 Perl_croak_nocontext("panic: realloc");
34de22dd 140#endif
7614df0c 141 ptr = PerlMem_realloc(where,size);
da927450 142 PERL_ALLOC_CHECK(ptr);
cd39f2b6 143
97835f67
JH		 144 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++));
145 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
79072805 146
8d063cd8
LW		 147 if (ptr != Nullch)
148 return ptr;
3280af22 149 else if (PL_nomemok)
7c0587c8 150 return Nullch;
8d063cd8 151 else {
bf49b057 152 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 153 my_exit(1);
4e35701f 154 return Nullch;
8d063cd8
LW		 155 }
156 /*NOTREACHED*/
157}
158
f2517201 159/* safe version of system's free() */
8d063cd8 160
54310121 161Free_t
4f63d024 162Perl_safesysfree(Malloc_t where)
8d063cd8 163{
54aff467 164 dTHX;
97835f67 165 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++));
378cc40b 166 if (where) {
de3bb511 167 /*SUPPRESS 701*/
6ad3d225 168 PerlMem_free(where);
378cc40b 169 }
8d063cd8
LW		 170}
171
f2517201 172/* safe version of system's calloc() */
1050c9ca 173
bd4080b3 174Malloc_t
4f63d024 175Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 176{
54aff467 177 dTHX;
bd4080b3 178 Malloc_t ptr;
1050c9ca 179
55497cff 180#ifdef HAS_64K_LIMIT
5f05dabc 181 if (size * count > 0xffff) {
bf49b057 182 PerlIO_printf(Perl_error_log,
5f05dabc 183 "Allocation too large: %lx\n", size * count) FLUSH;
54aff467 184 my_exit(1);
5f05dabc 185 }
55497cff 186#endif /* HAS_64K_LIMIT */
1050c9ca 187#ifdef DEBUGGING
188 if ((long)size < 0 || (long)count < 0)
4f63d024 189 Perl_croak_nocontext("panic: calloc");
1050c9ca 190#endif
0b7c1c42 191 size *= count;
6ad3d225 192 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
da927450 193 PERL_ALLOC_CHECK(ptr);
97835f67 194 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) calloc %ld x %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)count,(long)size));
1050c9ca 195 if (ptr != Nullch) {
196 memset((void*)ptr, 0, size);
197 return ptr;
198 }
3280af22 199 else if (PL_nomemok)
1050c9ca 200 return Nullch;
201 else {
bf49b057 202 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 203 my_exit(1);
4e35701f 204 return Nullch;
1050c9ca 205 }
206 /*NOTREACHED*/
207}
208
a687059c
LW		 209#ifdef LEAKTEST
210
8c52afec
IZ		 211struct mem_test_strut {
212 union {
213 long type;
214 char c[2];
215 } u;
216 long size;
217};
218
219# define ALIGN sizeof(struct mem_test_strut)
220
221# define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
222# define typeof_chunk(ch) \
223 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
224# define set_typeof_chunk(ch,t) \
225 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
226#define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
227 ? MAXYCOUNT - 1 \
228 : ( (size) > 40 \
229 ? ((size) - 1)/8 + 5 \
230 : ((size) - 1)/4))
8d063cd8 231
bd4080b3 232Malloc_t
4f63d024 233Perl_safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 234{
8c52afec 235 register char* where = (char*)safemalloc(size + ALIGN);
8d063cd8 236
8c52afec
IZ		 237 xcount[x] += size;
238 xycount[x][SIZE_TO_Y(size)]++;
239 set_typeof_chunk(where, x);
240 sizeof_chunk(where) = size;
241 return (Malloc_t)(where + ALIGN);
8d063cd8 242}
8d063cd8 243
bd4080b3 244Malloc_t
4f63d024 245Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
a687059c 246{
8c52afec
IZ		 247 char *where = (char*)wh;
248
249 if (!wh)
250 return safexmalloc(0,size);
251
252 {
253 MEM_SIZE old = sizeof_chunk(where - ALIGN);
254 int t = typeof_chunk(where - ALIGN);
255 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
256
257 xycount[t][SIZE_TO_Y(old)]--;
258 xycount[t][SIZE_TO_Y(size)]++;
259 xcount[t] += size - old;
260 sizeof_chunk(new) = size;
261 return (Malloc_t)(new + ALIGN);
262 }
a687059c
LW		 263}
264
265void
4f63d024 266Perl_safexfree(Malloc_t wh)
a687059c 267{
79072805 268 I32 x;
8c52afec
IZ		 269 char *where = (char*)wh;
270 MEM_SIZE size;
271
a687059c
LW		 272 if (!where)
273 return;
274 where -= ALIGN;
8c52afec 275 size = sizeof_chunk(where);
a687059c 276 x = where[0] + 100 * where[1];
8c52afec
IZ		 277 xcount[x] -= size;
278 xycount[x][SIZE_TO_Y(size)]--;
a687059c
LW		 279 safefree(where);
280}
281
bd4080b3 282Malloc_t
4f63d024 283Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 284{
8c52afec
IZ		 285 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
286 xcount[x] += size;
287 xycount[x][SIZE_TO_Y(size)]++;
288 memset((void*)(where + ALIGN), 0, size * count);
289 set_typeof_chunk(where, x);
290 sizeof_chunk(where) = size;
291 return (Malloc_t)(where + ALIGN);
1050c9ca 292}
293
864dbfa3 294STATIC void
cea2e8a9 295S_xstat(pTHX_ int flag)
8d063cd8 296{
8c52afec
IZ		 297 register I32 i, j, total = 0;
298 I32 subtot[MAXYCOUNT];
8d063cd8 299
8c52afec
IZ		 300 for (j = 0; j < MAXYCOUNT; j++) {
301 subtot[j] = 0;
302 }
303
bf49b057 304 PerlIO_printf(Perl_debug_log, " Id subtot 4 8 12 16 20 24 28 32 36 40 48 56 64 72 80 80+\n", total);
a687059c 305 for (i = 0; i < MAXXCOUNT; i++) {
8c52afec
IZ		 306 total += xcount[i];
307 for (j = 0; j < MAXYCOUNT; j++) {
308 subtot[j] += xycount[i][j];
309 }
310 if (flag == 0
311 ? xcount[i] /* Have something */
312 : (flag == 2
313 ? xcount[i] != lastxcount[i] /* Changed */
314 : xcount[i] > lastxcount[i])) { /* Growed */
bf49b057 315 PerlIO_printf(Perl_debug_log,"%2d %02d %7ld ", i / 100, i % 100,
8c52afec 316 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
a687059c 317 lastxcount[i] = xcount[i];
8c52afec
IZ		 318 for (j = 0; j < MAXYCOUNT; j++) {
319 if ( flag == 0
320 ? xycount[i][j] /* Have something */
321 : (flag == 2
322 ? xycount[i][j] != lastxycount[i][j] /* Changed */
323 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
bf49b057 324 PerlIO_printf(Perl_debug_log,"%3ld ",
8c52afec
IZ		 325 flag == 2
326 ? xycount[i][j] - lastxycount[i][j]
327 : xycount[i][j]);
328 lastxycount[i][j] = xycount[i][j];
329 } else {
bf49b057 330 PerlIO_printf(Perl_debug_log, " . ", xycount[i][j]);
8c52afec
IZ		 331 }
332 }
bf49b057 333 PerlIO_printf(Perl_debug_log, "\n");
8c52afec
IZ		 334 }
335 }
336 if (flag != 2) {
bf49b057 337 PerlIO_printf(Perl_debug_log, "Total %7ld ", total);
8c52afec
IZ		 338 for (j = 0; j < MAXYCOUNT; j++) {
339 if (subtot[j]) {
bf49b057 340 PerlIO_printf(Perl_debug_log, "%3ld ", subtot[j]);
8c52afec 341 } else {
bf49b057 342 PerlIO_printf(Perl_debug_log, " . ");
8c52afec 343 }
8d063cd8 344 }
bf49b057 345 PerlIO_printf(Perl_debug_log, "\n");
8d063cd8 346 }
8d063cd8 347}
a687059c
LW		 348
349#endif /* LEAKTEST */
8d063cd8
LW		 350
351/* copy a string up to some (non-backslashed) delimiter, if any */
352
353char *
864dbfa3 354Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 355{
fc36a67e 356 register I32 tolen;
357 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW		 358 if (*from == '\\') {
359 if (from[1] == delim)
360 from++;
fc36a67e 361 else {
362 if (to < toend)
363 *to++ = *from;
364 tolen++;
365 from++;
366 }
378cc40b 367 }
bedebaa5 368 else if (*from == delim)
8d063cd8 369 break;
fc36a67e 370 if (to < toend)
371 *to++ = *from;
8d063cd8 372 }
bedebaa5
CS		 373 if (to < toend)
374 *to = '\0';
fc36a67e 375 *retlen = tolen;
8d063cd8
LW		 376 return from;
377}
378
379/* return ptr to little string in big string, NULL if not found */
378cc40b 380/* This routine was donated by Corey Satten. */
8d063cd8
LW		 381
382char *
864dbfa3 383Perl_instr(pTHX_ register const char *big, register const char *little)
378cc40b 384{
08105a92 385 register const char *s, *x;
79072805 386 register I32 first;
378cc40b 387
a687059c 388 if (!little)
08105a92 389 return (char*)big;
a687059c 390 first = *little++;
378cc40b 391 if (!first)
08105a92 392 return (char*)big;
378cc40b
LW		 393 while (*big) {
394 if (*big++ != first)
395 continue;
396 for (x=big,s=little; *s; /**/ ) {
397 if (!*x)
398 return Nullch;
399 if (*s++ != *x++) {
400 s--;
401 break;
402 }
403 }
404 if (!*s)
08105a92 405 return (char*)(big-1);
378cc40b
LW		 406 }
407 return Nullch;
408}
8d063cd8 409
a687059c
LW		 410/* same as instr but allow embedded nulls */
411
412char *
864dbfa3 413Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
8d063cd8 414{
08105a92 415 register const char *s, *x;
79072805 416 register I32 first = *little;
08105a92 417 register const char *littleend = lend;
378cc40b 418
a0d0e21e 419 if (!first && little >= littleend)
08105a92 420 return (char*)big;
de3bb511
LW		 421 if (bigend - big < littleend - little)
422 return Nullch;
a687059c
LW		 423 bigend -= littleend - little++;
424 while (big <= bigend) {
425 if (*big++ != first)
426 continue;
427 for (x=big,s=little; s < littleend; /**/ ) {
428 if (*s++ != *x++) {
429 s--;
430 break;
431 }
432 }
433 if (s >= littleend)
08105a92 434 return (char*)(big-1);
378cc40b 435 }
a687059c
LW		 436 return Nullch;
437}
438
439/* reverse of the above--find last substring */
440
441char *
864dbfa3 442Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
a687059c 443{
08105a92
GS		 444 register const char *bigbeg;
445 register const char *s, *x;
79072805 446 register I32 first = *little;
08105a92 447 register const char *littleend = lend;
a687059c 448
a0d0e21e 449 if (!first && little >= littleend)
08105a92 450 return (char*)bigend;
a687059c
LW		 451 bigbeg = big;
452 big = bigend - (littleend - little++);
453 while (big >= bigbeg) {
454 if (*big-- != first)
455 continue;
456 for (x=big+2,s=little; s < littleend; /**/ ) {
457 if (*s++ != *x++) {
458 s--;
459 break;
460 }
461 }
462 if (s >= littleend)
08105a92 463 return (char*)(big+1);
378cc40b 464 }
a687059c 465 return Nullch;
378cc40b 466}
a687059c 467
bbce6d69 468/*
469 * Set up for a new ctype locale.
470 */
55497cff 471void
864dbfa3 472Perl_new_ctype(pTHX_ const char *newctype)
ef7eada9 473{
36477c24 474#ifdef USE_LOCALE_CTYPE
475
bbce6d69 476 int i;
ef7eada9 477
bbce6d69 478 for (i = 0; i < 256; i++) {
479 if (isUPPER_LC(i))
22c35a8c 480 PL_fold_locale[i] = toLOWER_LC(i);
bbce6d69 481 else if (isLOWER_LC(i))
22c35a8c 482 PL_fold_locale[i] = toUPPER_LC(i);
bbce6d69 483 else
22c35a8c 484 PL_fold_locale[i] = i;
bbce6d69 485 }
bbce6d69 486
36477c24 487#endif /* USE_LOCALE_CTYPE */
488}
bbce6d69 489
490/*
491 * Set up for a new collation locale.
492 */
493void
864dbfa3 494Perl_new_collate(pTHX_ const char *newcoll)
bbce6d69 495{
36477c24 496#ifdef USE_LOCALE_COLLATE
497
bbce6d69 498 if (! newcoll) {
3280af22
NIS		 499 if (PL_collation_name) {
500 ++PL_collation_ix;
501 Safefree(PL_collation_name);
502 PL_collation_name = NULL;
503 PL_collation_standard = TRUE;
504 PL_collxfrm_base = 0;
505 PL_collxfrm_mult = 2;
bbce6d69 506 }
507 return;
508 }
509
3280af22
NIS		 510 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
511 ++PL_collation_ix;
512 Safefree(PL_collation_name);
513 PL_collation_name = savepv(newcoll);
514 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 515
bbce6d69 516 {
517 /* 2: at most so many chars ('a', 'b'). */
518 /* 50: surely no system expands a char more. */
519#define XFRMBUFSIZE (2 * 50)
520 char xbuf[XFRMBUFSIZE];
521 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
522 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
523 SSize_t mult = fb - fa;
524 if (mult < 1)
cea2e8a9 525 Perl_croak(aTHX_ "strxfrm() gets absurd");
3280af22
NIS		 526 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
527 PL_collxfrm_mult = mult;
bbce6d69 528 }
bbce6d69 529 }
bbce6d69 530
36477c24 531#endif /* USE_LOCALE_COLLATE */
532}
bbce6d69 533
097ee67d 534void
51371543 535Perl_set_numeric_radix(pTHX)
097ee67d
JH		 536{
537#ifdef USE_LOCALE_NUMERIC
538# ifdef HAS_LOCALECONV
539 struct lconv* lc;
540
541 lc = localeconv();
542 if (lc && lc->decimal_point)
543 /* We assume that decimal separator aka the radix
544 * character is always a single character. If it
545 * ever is a string, this needs to be rethunk. */
546 PL_numeric_radix = *lc->decimal_point;
547 else
548 PL_numeric_radix = 0;
549# endif /* HAS_LOCALECONV */
097ee67d
JH		 550#endif /* USE_LOCALE_NUMERIC */
551}
552
bbce6d69 553/*
554 * Set up for a new numeric locale.
555 */
556void
864dbfa3 557Perl_new_numeric(pTHX_ const char *newnum)
bbce6d69 558{
36477c24 559#ifdef USE_LOCALE_NUMERIC
560
bbce6d69 561 if (! newnum) {
3280af22
NIS		 562 if (PL_numeric_name) {
563 Safefree(PL_numeric_name);
564 PL_numeric_name = NULL;
565 PL_numeric_standard = TRUE;
566 PL_numeric_local = TRUE;
bbce6d69 567 }
568 return;
569 }
570
3280af22
NIS		 571 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
572 Safefree(PL_numeric_name);
573 PL_numeric_name = savepv(newnum);
574 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
575 PL_numeric_local = TRUE;
51371543 576 set_numeric_radix();
bbce6d69 577 }
36477c24 578
579#endif /* USE_LOCALE_NUMERIC */
bbce6d69 580}
581
582void
864dbfa3 583Perl_set_numeric_standard(pTHX)
bbce6d69 584{
5f05dabc 585#ifdef USE_LOCALE_NUMERIC
586
3280af22 587 if (! PL_numeric_standard) {
bbce6d69 588 setlocale(LC_NUMERIC, "C");
3280af22
NIS		 589 PL_numeric_standard = TRUE;
590 PL_numeric_local = FALSE;
bbce6d69 591 }
5f05dabc 592
593#endif /* USE_LOCALE_NUMERIC */
bbce6d69 594}
595
596void
864dbfa3 597Perl_set_numeric_local(pTHX)
bbce6d69 598{
5f05dabc 599#ifdef USE_LOCALE_NUMERIC
600
3280af22
NIS		 601 if (! PL_numeric_local) {
602 setlocale(LC_NUMERIC, PL_numeric_name);
603 PL_numeric_standard = FALSE;
604 PL_numeric_local = TRUE;
51371543 605 set_numeric_radix();
bbce6d69 606 }
bbce6d69 607
36477c24 608#endif /* USE_LOCALE_NUMERIC */
5f05dabc 609}
36477c24 610
36477c24 611/*
612 * Initialize locale awareness.
613 */
f0c5b223 614int
864dbfa3 615Perl_init_i18nl10n(pTHX_ int printwarn)
f0c5b223
TB		 616{
617 int ok = 1;
618 /* returns
619 * 1 = set ok or not applicable,
620 * 0 = fallback to C locale,
621 * -1 = fallback to C locale failed
622 */
bbce6d69 623
36477c24 624#ifdef USE_LOCALE
bbce6d69 625
36477c24 626#ifdef USE_LOCALE_CTYPE
bbce6d69 627 char *curctype = NULL;
36477c24 628#endif /* USE_LOCALE_CTYPE */
629#ifdef USE_LOCALE_COLLATE
bbce6d69 630 char *curcoll = NULL;
36477c24 631#endif /* USE_LOCALE_COLLATE */
632#ifdef USE_LOCALE_NUMERIC
bbce6d69 633 char *curnum = NULL;
36477c24 634#endif /* USE_LOCALE_NUMERIC */
3aeabbed
JH		 635#ifdef __GLIBC__
636 char *language = PerlEnv_getenv("LANGUAGE");
637#endif
76e3520e
GS		 638 char *lc_all = PerlEnv_getenv("LC_ALL");
639 char *lang = PerlEnv_getenv("LANG");
bbce6d69 640 bool setlocale_failure = FALSE;
f0c5b223 641
02b32252
CS		 642#ifdef LOCALE_ENVIRON_REQUIRED
643
644 /*
645 * Ultrix setlocale(..., "") fails if there are no environment
646 * variables from which to get a locale name.
647 */
648
649 bool done = FALSE;
650
651#ifdef LC_ALL
652 if (lang) {
653 if (setlocale(LC_ALL, ""))
654 done = TRUE;
655 else
656 setlocale_failure = TRUE;
657 }
0644c9cb 658 if (!setlocale_failure) {
02b32252 659#ifdef USE_LOCALE_CTYPE
0644c9cb
IS		 660 if (! (curctype =
661 setlocale(LC_CTYPE,
662 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
02b32252
CS		 663 ? "" : Nullch)))
664 setlocale_failure = TRUE;
665#endif /* USE_LOCALE_CTYPE */
666#ifdef USE_LOCALE_COLLATE
0644c9cb
IS		 667 if (! (curcoll =
668 setlocale(LC_COLLATE,
669 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
02b32252
CS		 670 ? "" : Nullch)))
671 setlocale_failure = TRUE;
672#endif /* USE_LOCALE_COLLATE */
673#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS		 674 if (! (curnum =
675 setlocale(LC_NUMERIC,
676 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
02b32252
CS		 677 ? "" : Nullch)))
678 setlocale_failure = TRUE;
679#endif /* USE_LOCALE_NUMERIC */
680 }
681
0644c9cb 682#endif /* LC_ALL */
02b32252 683
0644c9cb 684#endif /* !LOCALE_ENVIRON_REQUIRED */
5f05dabc 685
0644c9cb 686#ifdef LC_ALL
bbce6d69 687 if (! setlocale(LC_ALL, ""))
688 setlocale_failure = TRUE;
0644c9cb 689#endif /* LC_ALL */
bbce6d69 690
0644c9cb 691 if (!setlocale_failure) {
36477c24 692#ifdef USE_LOCALE_CTYPE
0644c9cb
IS		 693 if (! (curctype = setlocale(LC_CTYPE, "")))
694 setlocale_failure = TRUE;
36477c24 695#endif /* USE_LOCALE_CTYPE */
696#ifdef USE_LOCALE_COLLATE
0644c9cb
IS		 697 if (! (curcoll = setlocale(LC_COLLATE, "")))
698 setlocale_failure = TRUE;
36477c24 699#endif /* USE_LOCALE_COLLATE */
700#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS		 701 if (! (curnum = setlocale(LC_NUMERIC, "")))
702 setlocale_failure = TRUE;
36477c24 703#endif /* USE_LOCALE_NUMERIC */
0644c9cb 704 }
02b32252 705
5f05dabc 706 if (setlocale_failure) {
707 char *p;
708 bool locwarn = (printwarn > 1 ||
709 printwarn &&
76e3520e 710 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)));
20cec16a 711
5f05dabc 712 if (locwarn) {
713#ifdef LC_ALL
714
bf49b057 715 PerlIO_printf(Perl_error_log,
5f05dabc 716 "perl: warning: Setting locale failed.\n");
717
718#else /* !LC_ALL */
719
bf49b057 720 PerlIO_printf(Perl_error_log,
bbce6d69 721 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 722#ifdef USE_LOCALE_CTYPE
bbce6d69 723 if (! curctype)
bf49b057 724 PerlIO_printf(Perl_error_log, "LC_CTYPE ");
36477c24 725#endif /* USE_LOCALE_CTYPE */
726#ifdef USE_LOCALE_COLLATE
bbce6d69 727 if (! curcoll)
bf49b057 728 PerlIO_printf(Perl_error_log, "LC_COLLATE ");
36477c24 729#endif /* USE_LOCALE_COLLATE */
730#ifdef USE_LOCALE_NUMERIC
bbce6d69 731 if (! curnum)
bf49b057 732 PerlIO_printf(Perl_error_log, "LC_NUMERIC ");
36477c24 733#endif /* USE_LOCALE_NUMERIC */
bf49b057 734 PerlIO_printf(Perl_error_log, "\n");
bbce6d69 735
5f05dabc 736#endif /* LC_ALL */
737
bf49b057 738 PerlIO_printf(Perl_error_log,
bbce6d69 739 "perl: warning: Please check that your locale settings:\n");
ef7eada9 740
3aeabbed 741#ifdef __GLIBC__
bf49b057 742 PerlIO_printf(Perl_error_log,
3aeabbed
JH		 743 "\tLANGUAGE = %c%s%c,\n",
744 language ? '"' : '(',
745 language ? language : "unset",
746 language ? '"' : ')');
747#endif
748
bf49b057 749 PerlIO_printf(Perl_error_log,
bbce6d69 750 "\tLC_ALL = %c%s%c,\n",
751 lc_all ? '"' : '(',
752 lc_all ? lc_all : "unset",
753 lc_all ? '"' : ')');
5f05dabc 754
755 {
756 char **e;
757 for (e = environ; *e; e++) {
758 if (strnEQ(*e, "LC_", 3)
759 && strnNE(*e, "LC_ALL=", 7)
760 && (p = strchr(*e, '=')))
bf49b057 761 PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n",
fb73857a 762 (int)(p - *e), *e, p + 1);
5f05dabc 763 }
764 }
765
bf49b057 766 PerlIO_printf(Perl_error_log,
bbce6d69 767 "\tLANG = %c%s%c\n",
5f05dabc 768 lang ? '"' : '(',
bbce6d69 769 lang ? lang : "unset",
770 lang ? '"' : ')');
ef7eada9 771
bf49b057 772 PerlIO_printf(Perl_error_log,
bbce6d69 773 " are supported and installed on your system.\n");
5f05dabc 774 }
ef7eada9 775
5f05dabc 776#ifdef LC_ALL
777
778 if (setlocale(LC_ALL, "C")) {
779 if (locwarn)
bf49b057 780 PerlIO_printf(Perl_error_log,
5f05dabc 781 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 782 ok = 0;
ef7eada9 783 }
5f05dabc 784 else {
785 if (locwarn)
bf49b057 786 PerlIO_printf(Perl_error_log,
5f05dabc 787 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
788 ok = -1;
789 }
bbce6d69 790
5f05dabc 791#else /* ! LC_ALL */
792
793 if (0
36477c24 794#ifdef USE_LOCALE_CTYPE
5f05dabc 795 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24 796#endif /* USE_LOCALE_CTYPE */
797#ifdef USE_LOCALE_COLLATE
5f05dabc 798 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24 799#endif /* USE_LOCALE_COLLATE */
800#ifdef USE_LOCALE_NUMERIC
5f05dabc 801 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 802#endif /* USE_LOCALE_NUMERIC */
5f05dabc 803 )
804 {
805 if (locwarn)
bf49b057 806 PerlIO_printf(Perl_error_log,
5f05dabc 807 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
808 ok = -1;
bbce6d69 809 }
5f05dabc 810
bbce6d69 811#endif /* ! LC_ALL */
5f05dabc 812
813#ifdef USE_LOCALE_CTYPE
814 curctype = setlocale(LC_CTYPE, Nullch);
815#endif /* USE_LOCALE_CTYPE */
816#ifdef USE_LOCALE_COLLATE
817 curcoll = setlocale(LC_COLLATE, Nullch);
818#endif /* USE_LOCALE_COLLATE */
819#ifdef USE_LOCALE_NUMERIC
820 curnum = setlocale(LC_NUMERIC, Nullch);
821#endif /* USE_LOCALE_NUMERIC */
ef7eada9
JH		 822 }
823
36477c24 824#ifdef USE_LOCALE_CTYPE
864dbfa3 825 new_ctype(curctype);
36477c24 826#endif /* USE_LOCALE_CTYPE */
bbce6d69 827
36477c24 828#ifdef USE_LOCALE_COLLATE
864dbfa3 829 new_collate(curcoll);
36477c24 830#endif /* USE_LOCALE_COLLATE */
bbce6d69 831
36477c24 832#ifdef USE_LOCALE_NUMERIC
864dbfa3 833 new_numeric(curnum);
36477c24 834#endif /* USE_LOCALE_NUMERIC */
ef7eada9 835
36477c24 836#endif /* USE_LOCALE */
ef7eada9 837
f0c5b223
TB		 838 return ok;
839}
840
bbce6d69 841/* Backwards compatibility. */
842int
864dbfa3 843Perl_init_i18nl14n(pTHX_ int printwarn)
bbce6d69 844{
864dbfa3 845 return init_i18nl10n(printwarn);
bbce6d69 846}
ef7eada9 847
36477c24 848#ifdef USE_LOCALE_COLLATE
ef7eada9 849
bbce6d69 850/*
851 * mem_collxfrm() is a bit like strxfrm() but with two important
852 * differences. First, it handles embedded NULs. Second, it allocates
853 * a bit more memory than needed for the transformed data itself.
854 * The real transformed data begins at offset sizeof(collationix).
855 * Please see sv_collxfrm() to see how this is used.
856 */
857char *
864dbfa3 858Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
bbce6d69 859{
860 char *xbuf;
76e3520e 861 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69 862
863 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
864 /* the +1 is for the terminating NUL. */
865
3280af22 866 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
76e3520e 867 New(171, xbuf, xAlloc, char);
bbce6d69 868 if (! xbuf)
869 goto bad;
870
3280af22
NIS		 871 *(U32*)xbuf = PL_collation_ix;
872 xout = sizeof(PL_collation_ix);
bbce6d69 873 for (xin = 0; xin < len; ) {
874 SSize_t xused;
875
876 for (;;) {
76e3520e 877 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69 878 if (xused == -1)
879 goto bad;
76e3520e 880 if (xused < xAlloc - xout)
bbce6d69 881 break;
76e3520e
GS		 882 xAlloc = (2 * xAlloc) + 1;
883 Renew(xbuf, xAlloc, char);
bbce6d69 884 if (! xbuf)
885 goto bad;
886 }
ef7eada9 887
bbce6d69 888 xin += strlen(s + xin) + 1;
889 xout += xused;
890
891 /* Embedded NULs are understood but silently skipped
892 * because they make no sense in locale collation. */
893 }
ef7eada9 894
bbce6d69 895 xbuf[xout] = '\0';
3280af22 896 *xlen = xout - sizeof(PL_collation_ix);
bbce6d69 897 return xbuf;
898
899 bad:
900 Safefree(xbuf);
901 *xlen = 0;
902 return NULL;
ef7eada9
JH		 903}
904
36477c24 905#endif /* USE_LOCALE_COLLATE */
bbce6d69 906
cf93c79d
IZ		 907#define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
908
909/* As a space optimization, we do not compile tables for strings of length
910 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
911 special-cased in fbm_instr().
912
913 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
914
954c1994
GS		 915/*
916=for apidoc fbm_compile
917
918Analyses the string in order to make fast searches on it using fbm_instr()
919-- the Boyer-Moore algorithm.
920
921=cut
922*/
923
378cc40b 924void
7506f9c3 925Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
378cc40b 926{
942e002e
GS		 927 register U8 *s;
928 register U8 *table;
79072805 929 register U32 i;
0b71040e 930 STRLEN len;
79072805
LW		 931 I32 rarest = 0;
932 U32 frequency = 256;
933
cf93c79d
IZ		 934 if (flags & FBMcf_TAIL)
935 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
942e002e 936 s = (U8*)SvPV_force(sv, len);
07f14f54 937 (void)SvUPGRADE(sv, SVt_PVBM);
cf93c79d
IZ		 938 if (len == 0) /* TAIL might be on on a zero-length string. */
939 return;
02128f11 940 if (len > 2) {
7506f9c3 941 U8 mlen;
cf93c79d
IZ		 942 unsigned char *sb;
943
7506f9c3 944 if (len > 255)
cf93c79d 945 mlen = 255;
7506f9c3
GS		 946 else
947 mlen = (U8)len;
948 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
cf93c79d 949 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
7506f9c3
GS		 950 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
951 memset((void*)table, mlen, 256);
952 table[-1] = (U8)flags;
02128f11 953 i = 0;
7506f9c3 954 sb = s - mlen + 1; /* first char (maybe) */
cf93c79d
IZ		 955 while (s >= sb) {
956 if (table[*s] == mlen)
7506f9c3 957 table[*s] = (U8)i;
cf93c79d
IZ		 958 s--, i++;
959 }
378cc40b 960 }
bbce6d69 961 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 962 SvVALID_on(sv);
378cc40b 963
463ee0b2 964 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69 965 for (i = 0; i < len; i++) {
22c35a8c 966 if (PL_freq[s[i]] < frequency) {
bbce6d69 967 rarest = i;
22c35a8c 968 frequency = PL_freq[s[i]];
378cc40b
LW		 969 }
970 }
79072805
LW		 971 BmRARE(sv) = s[rarest];
972 BmPREVIOUS(sv) = rarest;
cf93c79d
IZ		 973 BmUSEFUL(sv) = 100; /* Initial value */
974 if (flags & FBMcf_TAIL)
975 SvTAIL_on(sv);
7506f9c3
GS		 976 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
977 BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW		 978}
979
cf93c79d
IZ		 980/* If SvTAIL(littlestr), it has a fake '\n' at end. */
981/* If SvTAIL is actually due to \Z or \z, this gives false positives
982 if multiline */
983
954c1994
GS		 984/*
985=for apidoc fbm_instr
986
987Returns the location of the SV in the string delimited by C<str> and
988C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
989does not have to be fbm_compiled, but the search will not be as fast
990then.
991
992=cut
993*/
994
378cc40b 995char *
864dbfa3 996Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
378cc40b 997{
a687059c 998 register unsigned char *s;
cf93c79d
IZ		 999 STRLEN l;
1000 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
1001 register STRLEN littlelen = l;
1002 register I32 multiline = flags & FBMrf_MULTILINE;
1003
1004 if (bigend - big < littlelen) {
1005 check_tail:
1006 if ( SvTAIL(littlestr)
1007 && (bigend - big == littlelen - 1)
1008 && (littlelen == 1
1009 || *big == *little && memEQ(big, little, littlelen - 1)))
1010 return (char*)big;
1011 return Nullch;
1012 }
378cc40b 1013
cf93c79d
IZ		 1014 if (littlelen <= 2) { /* Special-cased */
1015 register char c;
1016
1017 if (littlelen == 1) {
1018 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
1019 /* Know that bigend != big. */
1020 if (bigend[-1] == '\n')
1021 return (char *)(bigend - 1);
1022 return (char *) bigend;
1023 }
1024 s = big;
1025 while (s < bigend) {
1026 if (*s == *little)
1027 return (char *)s;
1028 s++;
1029 }
1030 if (SvTAIL(littlestr))
1031 return (char *) bigend;
1032 return Nullch;
1033 }
1034 if (!littlelen)
1035 return (char*)big; /* Cannot be SvTAIL! */
1036
1037 /* littlelen is 2 */
1038 if (SvTAIL(littlestr) && !multiline) {
1039 if (bigend[-1] == '\n' && bigend[-2] == *little)
1040 return (char*)bigend - 2;
1041 if (bigend[-1] == *little)
1042 return (char*)bigend - 1;
1043 return Nullch;
1044 }
1045 {
1046 /* This should be better than FBM if c1 == c2, and almost
1047 as good otherwise: maybe better since we do less indirection.
1048 And we save a lot of memory by caching no table. */
1049 register unsigned char c1 = little[0];
1050 register unsigned char c2 = little[1];
1051
1052 s = big + 1;
1053 bigend--;
1054 if (c1 != c2) {
1055 while (s <= bigend) {
1056 if (s[0] == c2) {
1057 if (s[-1] == c1)
1058 return (char*)s - 1;
1059 s += 2;
1060 continue;
3fe6f2dc 1061 }
cf93c79d
IZ		 1062 next_chars:
1063 if (s[0] == c1) {
1064 if (s == bigend)
1065 goto check_1char_anchor;
1066 if (s[1] == c2)
1067 return (char*)s;
1068 else {
1069 s++;
1070 goto next_chars;
1071 }
1072 }
1073 else
1074 s += 2;
1075 }
1076 goto check_1char_anchor;
1077 }
1078 /* Now c1 == c2 */
1079 while (s <= bigend) {
1080 if (s[0] == c1) {
1081 if (s[-1] == c1)
1082 return (char*)s - 1;
1083 if (s == bigend)
1084 goto check_1char_anchor;
1085 if (s[1] == c1)
1086 return (char*)s;
1087 s += 3;
02128f11 1088 }
c277df42 1089 else
cf93c79d 1090 s += 2;
c277df42 1091 }
c277df42 1092 }
cf93c79d
IZ		 1093 check_1char_anchor: /* One char and anchor! */
1094 if (SvTAIL(littlestr) && (*bigend == *little))
1095 return (char *)bigend; /* bigend is already decremented. */
1096 return Nullch;
d48672a2 1097 }
cf93c79d 1098 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
bbce6d69 1099 s = bigend - littlelen;
7506f9c3 1100 if (s >= big && bigend[-1] == '\n' && *s == *little
cf93c79d
IZ		 1101 /* Automatically of length > 2 */
1102 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
7506f9c3 1103 {
bbce6d69 1104 return (char*)s; /* how sweet it is */
7506f9c3
GS		 1105 }
1106 if (s[1] == *little
1107 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1108 {
cf93c79d 1109 return (char*)s + 1; /* how sweet it is */
7506f9c3 1110 }
02128f11
IZ		 1111 return Nullch;
1112 }
cf93c79d
IZ		 1113 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1114 char *b = ninstr((char*)big,(char*)bigend,
1115 (char*)little, (char*)little + littlelen);
1116
1117 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1118 /* Chop \n from littlestr: */
1119 s = bigend - littlelen + 1;
7506f9c3
GS		 1120 if (*s == *little
1121 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1122 {
3fe6f2dc 1123 return (char*)s;
7506f9c3 1124 }
cf93c79d 1125 return Nullch;
a687059c 1126 }
cf93c79d 1127 return b;
a687059c 1128 }
cf93c79d
IZ		 1129
1130 { /* Do actual FBM. */
1131 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1132 register unsigned char *oldlittle;
1133
1134 if (littlelen > bigend - big)
1135 return Nullch;
1136 --littlelen; /* Last char found by table lookup */
1137
1138 s = big + littlelen;
1139 little += littlelen; /* last char */
1140 oldlittle = little;
1141 if (s < bigend) {
1142 register I32 tmp;
1143
1144 top2:
1145 /*SUPPRESS 560*/
7506f9c3 1146 if ((tmp = table[*s])) {
62b28dd9 1147#ifdef POINTERRIGOR
cf93c79d
IZ		 1148 if (bigend - s > tmp) {
1149 s += tmp;
1150 goto top2;
1151 }
bbce6d69 1152 s += tmp;
62b28dd9 1153#else
cf93c79d 1154 if ((s += tmp) < bigend)
62b28dd9 1155 goto top2;
cf93c79d
IZ		 1156#endif
1157 goto check_end;
1158 }
1159 else { /* less expensive than calling strncmp() */
1160 register unsigned char *olds = s;
1161
1162 tmp = littlelen;
1163
1164 while (tmp--) {
1165 if (*--s == *--little)
1166 continue;
1167 differ:
1168 s = olds + 1; /* here we pay the price for failure */
1169 little = oldlittle;
1170 if (s < bigend) /* fake up continue to outer loop */
1171 goto top2;
1172 goto check_end;
1173 }
1174 return (char *)s;
a687059c 1175 }
378cc40b 1176 }
cf93c79d
IZ		 1177 check_end:
1178 if ( s == bigend && (table[-1] & FBMcf_TAIL)
1179 && memEQ(bigend - littlelen, oldlittle - littlelen, littlelen) )
1180 return (char*)bigend - littlelen;
1181 return Nullch;
378cc40b 1182 }
378cc40b
LW		 1183}
1184
c277df42
IZ		 1185/* start_shift, end_shift are positive quantities which give offsets
1186 of ends of some substring of bigstr.
1187 If `last' we want the last occurence.
1188 old_posp is the way of communication between consequent calls if
1189 the next call needs to find the .
1190 The initial *old_posp should be -1.
cf93c79d
IZ		 1191
1192 Note that we take into account SvTAIL, so one can get extra
1193 optimizations if _ALL flag is set.
c277df42
IZ		 1194 */
1195
cf93c79d
IZ		 1196/* If SvTAIL is actually due to \Z or \z, this gives false positives
1197 if PL_multiline. In fact if !PL_multiline the autoritative answer
1198 is not supported yet. */
1199
378cc40b 1200char *
864dbfa3 1201Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1202{
5c0ca799 1203 dTHR;
a687059c
LW		 1204 register unsigned char *s, *x;
1205 register unsigned char *big;
79072805
LW		 1206 register I32 pos;
1207 register I32 previous;
1208 register I32 first;
a687059c 1209 register unsigned char *little;
c277df42 1210 register I32 stop_pos;
a687059c 1211 register unsigned char *littleend;
c277df42 1212 I32 found = 0;
378cc40b 1213
c277df42 1214 if (*old_posp == -1
3280af22 1215 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
cf93c79d
IZ		 1216 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1217 cant_find:
1218 if ( BmRARE(littlestr) == '\n'
1219 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1220 little = (unsigned char *)(SvPVX(littlestr));
1221 littleend = little + SvCUR(littlestr);
1222 first = *little++;
1223 goto check_tail;
1224 }
378cc40b 1225 return Nullch;
cf93c79d
IZ		 1226 }
1227
463ee0b2 1228 little = (unsigned char *)(SvPVX(littlestr));
79072805 1229 littleend = little + SvCUR(littlestr);
378cc40b 1230 first = *little++;
c277df42 1231 /* The value of pos we can start at: */
79072805 1232 previous = BmPREVIOUS(littlestr);
463ee0b2 1233 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ		 1234 /* The value of pos we can stop at: */
1235 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
cf93c79d
IZ		 1236 if (previous + start_shift > stop_pos) {
1237 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1238 goto check_tail;
1239 return Nullch;
1240 }
c277df42 1241 while (pos < previous + start_shift) {
3280af22 1242 if (!(pos += PL_screamnext[pos]))
cf93c79d 1243 goto cant_find;
378cc40b 1244 }
de3bb511 1245#ifdef POINTERRIGOR
bbce6d69 1246 do {
ef64f398 1247 if (pos >= stop_pos) break;
bbce6d69 1248 if (big[pos-previous] != first)
1249 continue;
1250 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69 1251 if (*s++ != *x++) {
1252 s--;
1253 break;
de3bb511 1254 }
bbce6d69 1255 }
c277df42
IZ		 1256 if (s == littleend) {
1257 *old_posp = pos;
1258 if (!last) return (char *)(big+pos-previous);
1259 found = 1;
1260 }
6b88bc9c 1261 } while ( pos += PL_screamnext[pos] );
c277df42 1262 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW		 1263#else /* !POINTERRIGOR */
1264 big -= previous;
bbce6d69 1265 do {
ef64f398 1266 if (pos >= stop_pos) break;
bbce6d69 1267 if (big[pos] != first)
1268 continue;
1269 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69 1270 if (*s++ != *x++) {
1271 s--;
1272 break;
378cc40b 1273 }
bbce6d69 1274 }
c277df42
IZ		 1275 if (s == littleend) {
1276 *old_posp = pos;
1277 if (!last) return (char *)(big+pos);
1278 found = 1;
1279 }
3280af22 1280 } while ( pos += PL_screamnext[pos] );
cf93c79d
IZ		 1281 if (last && found)
1282 return (char *)(big+(*old_posp));
de3bb511 1283#endif /* POINTERRIGOR */
cf93c79d
IZ		 1284 check_tail:
1285 if (!SvTAIL(littlestr) || (end_shift > 0))
1286 return Nullch;
1287 /* Ignore the trailing "\n". This code is not microoptimized */
1288 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1289 stop_pos = littleend - little; /* Actual littlestr len */
1290 if (stop_pos == 0)
1291 return (char*)big;
1292 big -= stop_pos;
1293 if (*big == first
1294 && ((stop_pos == 1) || memEQ(big + 1, little, stop_pos - 1)))
1295 return (char*)big;
1296 return Nullch;
8d063cd8
LW		 1297}
1298
79072805 1299I32
864dbfa3 1300Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
79072805 1301{
bbce6d69 1302 register U8 *a = (U8 *)s1;
1303 register U8 *b = (U8 *)s2;
79072805 1304 while (len--) {
22c35a8c 1305 if (*a != *b && *a != PL_fold[*b])
bbce6d69 1306 return 1;
1307 a++,b++;
1308 }
1309 return 0;
1310}
1311
1312I32
864dbfa3 1313Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
bbce6d69 1314{
1315 register U8 *a = (U8 *)s1;
1316 register U8 *b = (U8 *)s2;
1317 while (len--) {
22c35a8c 1318 if (*a != *b && *a != PL_fold_locale[*b])
bbce6d69 1319 return 1;
1320 a++,b++;
79072805
LW		 1321 }
1322 return 0;
1323}
1324
8d063cd8
LW		 1325/* copy a string to a safe spot */
1326
954c1994
GS		 1327/*
1328=for apidoc savepv
1329
1330Copy a string to a safe spot. This does not use an SV.
1331
1332=cut
1333*/
1334
8d063cd8 1335char *
864dbfa3 1336Perl_savepv(pTHX_ const char *sv)
8d063cd8 1337{
a687059c 1338 register char *newaddr;
8d063cd8 1339
79072805
LW		 1340 New(902,newaddr,strlen(sv)+1,char);
1341 (void)strcpy(newaddr,sv);
8d063cd8
LW		 1342 return newaddr;
1343}
1344
a687059c
LW		 1345/* same thing but with a known length */
1346
954c1994
GS		 1347/*
1348=for apidoc savepvn
1349
1350Copy a string to a safe spot. The C<len> indicates number of bytes to
1351copy. This does not use an SV.
1352
1353=cut
1354*/
1355
a687059c 1356char *
864dbfa3 1357Perl_savepvn(pTHX_ const char *sv, register I32 len)
a687059c
LW		 1358{
1359 register char *newaddr;
1360
1361 New(903,newaddr,len+1,char);
79072805 1362 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW		 1363 newaddr[len] = '\0'; /* is now */
1364 return newaddr;
1365}
1366
cea2e8a9 1367/* the SV for Perl_form() and mess() is not kept in an arena */
fc36a67e 1368
76e3520e 1369STATIC SV *
cea2e8a9 1370S_mess_alloc(pTHX)
fc36a67e 1371{
e72dc28c 1372 dTHR;
fc36a67e 1373 SV *sv;
1374 XPVMG *any;
1375
e72dc28c
GS		 1376 if (!PL_dirty)
1377 return sv_2mortal(newSVpvn("",0));
1378
0372dbb6
GS		 1379 if (PL_mess_sv)
1380 return PL_mess_sv;
1381
fc36a67e 1382 /* Create as PVMG now, to avoid any upgrading later */
1383 New(905, sv, 1, SV);
1384 Newz(905, any, 1, XPVMG);
1385 SvFLAGS(sv) = SVt_PVMG;
1386 SvANY(sv) = (void*)any;
1387 SvREFCNT(sv) = 1 << 30; /* practically infinite */
e72dc28c 1388 PL_mess_sv = sv;
fc36a67e 1389 return sv;
1390}
1391
c5be433b 1392#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1393char *
1394Perl_form_nocontext(const char* pat, ...)
1395{
1396 dTHX;
c5be433b 1397 char *retval;
cea2e8a9
GS		 1398 va_list args;
1399 va_start(args, pat);
c5be433b 1400 retval = vform(pat, &args);
cea2e8a9 1401 va_end(args);
c5be433b 1402 return retval;
cea2e8a9 1403}
c5be433b 1404#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9 1405
8990e307 1406char *
864dbfa3 1407Perl_form(pTHX_ const char* pat, ...)
8990e307 1408{
c5be433b 1409 char *retval;
46fc3d4c 1410 va_list args;
46fc3d4c 1411 va_start(args, pat);
c5be433b 1412 retval = vform(pat, &args);
46fc3d4c 1413 va_end(args);
c5be433b
GS		 1414 return retval;
1415}
1416
1417char *
1418Perl_vform(pTHX_ const char *pat, va_list *args)
1419{
1420 SV *sv = mess_alloc();
1421 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
e72dc28c 1422 return SvPVX(sv);
46fc3d4c 1423}
a687059c 1424
5a844595
GS		 1425#if defined(PERL_IMPLICIT_CONTEXT)
1426SV *
1427Perl_mess_nocontext(const char *pat, ...)
1428{
1429 dTHX;
1430 SV *retval;
1431 va_list args;
1432 va_start(args, pat);
1433 retval = vmess(pat, &args);
1434 va_end(args);
1435 return retval;
1436}
1437#endif /* PERL_IMPLICIT_CONTEXT */
1438
06bf62c7 1439SV *
5a844595
GS		 1440Perl_mess(pTHX_ const char *pat, ...)
1441{
1442 SV *retval;
1443 va_list args;
1444 va_start(args, pat);
1445 retval = vmess(pat, &args);
1446 va_end(args);
1447 return retval;
1448}
1449
1450SV *
1451Perl_vmess(pTHX_ const char *pat, va_list *args)
46fc3d4c 1452{
e72dc28c 1453 SV *sv = mess_alloc();
46fc3d4c 1454 static char dgd[] = " during global destruction.\n";
1455
fc36a67e 1456 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1457 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1458 dTHR;
57843af0 1459 if (CopLINE(PL_curcop))
ed094faf
GS		 1460 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1461 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
515f54a1
GS		 1462 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1463 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1464 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
57def98f 1465 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
cf2093f6
JH		 1466 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1467 line_mode ? "line" : "chunk",
1468 (IV)IoLINES(GvIOp(PL_last_in_gv)));
a687059c 1469 }
9efbc0eb 1470#ifdef USE_THREADS
e8e6f333
GS		 1471 if (thr->tid)
1472 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
9efbc0eb 1473#endif
515f54a1 1474 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1475 }
06bf62c7 1476 return sv;
a687059c
LW		 1477}
1478
c5be433b
GS		 1479OP *
1480Perl_vdie(pTHX_ const char* pat, va_list *args)
36477c24 1481{
5dc0d613 1482 dTHR;
36477c24 1483 char *message;
3280af22 1484 int was_in_eval = PL_in_eval;
36477c24 1485 HV *stash;
1486 GV *gv;
1487 CV *cv;
06bf62c7
GS		 1488 SV *msv;
1489 STRLEN msglen;
36477c24 1490
bf49b057 1491 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1492 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1493 thr, PL_curstack, PL_mainstack));
36477c24 1494
06bf62c7 1495 if (pat) {
5a844595
GS		 1496 msv = vmess(pat, args);
1497 if (PL_errors && SvCUR(PL_errors)) {
1498 sv_catsv(PL_errors, msv);
1499 message = SvPV(PL_errors, msglen);
1500 SvCUR_set(PL_errors, 0);
1501 }
1502 else
1503 message = SvPV(msv,msglen);
06bf62c7
GS		 1504 }
1505 else {
1506 message = Nullch;
0f79a09d 1507 msglen = 0;
06bf62c7 1508 }
36477c24 1509
bf49b057 1510 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1511 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1512 thr, message, PL_diehook));
3280af22 1513 if (PL_diehook) {
cea2e8a9 1514 /* sv_2cv might call Perl_croak() */
3280af22 1515 SV *olddiehook = PL_diehook;
1738f5c4 1516 ENTER;
3280af22
NIS		 1517 SAVESPTR(PL_diehook);
1518 PL_diehook = Nullsv;
1738f5c4
CS		 1519 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1520 LEAVE;
1521 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1522 dSP;
774d564b 1523 SV *msg;
1524
1525 ENTER;
79cb57f6 1526 if (message) {
06bf62c7 1527 msg = newSVpvn(message, msglen);
4e6ea2c3
GS		 1528 SvREADONLY_on(msg);
1529 SAVEFREESV(msg);
1530 }
1531 else {
1532 msg = ERRSV;
1533 }
1738f5c4 1534
e788e7d3 1535 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1536 PUSHMARK(SP);
1738f5c4
CS		 1537 XPUSHs(msg);
1538 PUTBACK;
0cdb2077 1539 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1540 POPSTACK;
774d564b 1541 LEAVE;
1738f5c4 1542 }
36477c24 1543 }
1544
06bf62c7 1545 PL_restartop = die_where(message, msglen);
bf49b057 1546 DEBUG_S(PerlIO_printf(Perl_debug_log,
7c06b590 1547 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1548 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1549 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1550 JMPENV_JUMP(3);
3280af22 1551 return PL_restartop;
36477c24 1552}
1553
c5be433b 1554#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1555OP *
1556Perl_die_nocontext(const char* pat, ...)
a687059c 1557{
cea2e8a9
GS		 1558 dTHX;
1559 OP *o;
a687059c 1560 va_list args;
cea2e8a9 1561 va_start(args, pat);
c5be433b 1562 o = vdie(pat, &args);
cea2e8a9
GS		 1563 va_end(args);
1564 return o;
1565}
c5be433b 1566#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9
GS		 1567
1568OP *
1569Perl_die(pTHX_ const char* pat, ...)
1570{
1571 OP *o;
1572 va_list args;
1573 va_start(args, pat);
c5be433b 1574 o = vdie(pat, &args);
cea2e8a9
GS		 1575 va_end(args);
1576 return o;
1577}
1578
c5be433b
GS		 1579void
1580Perl_vcroak(pTHX_ const char* pat, va_list *args)
cea2e8a9
GS		 1581{
1582 dTHR;
de3bb511 1583 char *message;
748a9306
LW		 1584 HV *stash;
1585 GV *gv;
1586 CV *cv;
06bf62c7
GS		 1587 SV *msv;
1588 STRLEN msglen;
a687059c 1589
5a844595
GS		 1590 msv = vmess(pat, args);
1591 if (PL_errors && SvCUR(PL_errors)) {
1592 sv_catsv(PL_errors, msv);
1593 message = SvPV(PL_errors, msglen);
1594 SvCUR_set(PL_errors, 0);
1595 }
1596 else
1597 message = SvPV(msv,msglen);
1598
b900a521
JH		 1599 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1600 PTR2UV(thr), message));
5a844595 1601
3280af22 1602 if (PL_diehook) {
cea2e8a9 1603 /* sv_2cv might call Perl_croak() */
3280af22 1604 SV *olddiehook = PL_diehook;
1738f5c4 1605 ENTER;
3280af22
NIS		 1606 SAVESPTR(PL_diehook);
1607 PL_diehook = Nullsv;
20cec16a 1608 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS		 1609 LEAVE;
1610 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1611 dSP;
774d564b 1612 SV *msg;
1613
1614 ENTER;
06bf62c7 1615 msg = newSVpvn(message, msglen);
774d564b 1616 SvREADONLY_on(msg);
1617 SAVEFREESV(msg);
20cec16a 1618
e788e7d3 1619 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1620 PUSHMARK(SP);
1738f5c4 1621 XPUSHs(msg);
20cec16a 1622 PUTBACK;
864dbfa3 1623 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1624 POPSTACK;
774d564b 1625 LEAVE;
20cec16a 1626 }
748a9306 1627 }
3280af22 1628 if (PL_in_eval) {
06bf62c7 1629 PL_restartop = die_where(message, msglen);
6224f72b 1630 JMPENV_JUMP(3);
a0d0e21e 1631 }
d175a3f0
GS		 1632 {
1633#ifdef USE_SFIO
1634 /* SFIO can really mess with your errno */
1635 int e = errno;
1636#endif
bf49b057
GS		 1637 PerlIO *serr = Perl_error_log;
1638
1639 PerlIO_write(serr, message, msglen);
1640 (void)PerlIO_flush(serr);
d175a3f0
GS		 1641#ifdef USE_SFIO
1642 errno = e;
1643#endif
1644 }
f86702cc 1645 my_failure_exit();
a687059c
LW		 1646}
1647
c5be433b 1648#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1649void
cea2e8a9 1650Perl_croak_nocontext(const char *pat, ...)
a687059c 1651{
cea2e8a9 1652 dTHX;
a687059c 1653 va_list args;
cea2e8a9 1654 va_start(args, pat);
c5be433b 1655 vcroak(pat, &args);
cea2e8a9
GS		 1656 /* NOTREACHED */
1657 va_end(args);
1658}
1659#endif /* PERL_IMPLICIT_CONTEXT */
1660
954c1994
GS		 1661/*
1662=for apidoc croak
1663
1664This is the XSUB-writer's interface to Perl's C<die> function. Use this
1665function the same way you use the C C<printf> function. See
1666C<warn>.
1667
1668=cut
1669*/
1670
cea2e8a9
GS		 1671void
1672Perl_croak(pTHX_ const char *pat, ...)
1673{
1674 va_list args;
1675 va_start(args, pat);
c5be433b 1676 vcroak(pat, &args);
cea2e8a9
GS		 1677 /* NOTREACHED */
1678 va_end(args);
1679}
1680
c5be433b
GS		 1681void
1682Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1683{
de3bb511 1684 char *message;
748a9306
LW		 1685 HV *stash;
1686 GV *gv;
1687 CV *cv;
06bf62c7
GS		 1688 SV *msv;
1689 STRLEN msglen;
a687059c 1690
5a844595 1691 msv = vmess(pat, args);
06bf62c7 1692 message = SvPV(msv, msglen);
a687059c 1693
3280af22 1694 if (PL_warnhook) {
cea2e8a9 1695 /* sv_2cv might call Perl_warn() */
11343788 1696 dTHR;
3280af22 1697 SV *oldwarnhook = PL_warnhook;
1738f5c4 1698 ENTER;
3280af22
NIS		 1699 SAVESPTR(PL_warnhook);
1700 PL_warnhook = Nullsv;
20cec16a 1701 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS		 1702 LEAVE;
1703 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1704 dSP;
774d564b 1705 SV *msg;
1706
1707 ENTER;
06bf62c7 1708 msg = newSVpvn(message, msglen);
774d564b 1709 SvREADONLY_on(msg);
1710 SAVEFREESV(msg);
1711
e788e7d3 1712 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1713 PUSHMARK(SP);
774d564b 1714 XPUSHs(msg);
20cec16a 1715 PUTBACK;
864dbfa3 1716 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1717 POPSTACK;
774d564b 1718 LEAVE;
20cec16a 1719 return;
1720 }
748a9306 1721 }
bf49b057
GS		 1722 {
1723 PerlIO *serr = Perl_error_log;
1724
1725 PerlIO_write(serr, message, msglen);
a687059c 1726#ifdef LEAKTEST
bf49b057
GS		 1727 DEBUG_L(*message == '!'
1728 ? (xstat(message[1]=='!'
1729 ? (message[2]=='!' ? 2 : 1)
1730 : 0)
1731 , 0)
1732 : 0);
a687059c 1733#endif
bf49b057
GS		 1734 (void)PerlIO_flush(serr);
1735 }
a687059c 1736}
8d063cd8 1737
c5be433b 1738#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1739void
1740Perl_warn_nocontext(const char *pat, ...)
1741{
1742 dTHX;
1743 va_list args;
1744 va_start(args, pat);
c5be433b 1745 vwarn(pat, &args);
cea2e8a9
GS		 1746 va_end(args);
1747}
1748#endif /* PERL_IMPLICIT_CONTEXT */
1749
954c1994
GS		 1750/*
1751=for apidoc warn
1752
1753This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1754function the same way you use the C C<printf> function. See
1755C<croak>.
1756
1757=cut
1758*/
1759
cea2e8a9
GS		 1760void
1761Perl_warn(pTHX_ const char *pat, ...)
1762{
1763 va_list args;
1764 va_start(args, pat);
c5be433b 1765 vwarn(pat, &args);
cea2e8a9
GS		 1766 va_end(args);
1767}
1768
c5be433b
GS		 1769#if defined(PERL_IMPLICIT_CONTEXT)
1770void
1771Perl_warner_nocontext(U32 err, const char *pat, ...)
1772{
1773 dTHX;
1774 va_list args;
1775 va_start(args, pat);
1776 vwarner(err, pat, &args);
1777 va_end(args);
1778}
1779#endif /* PERL_IMPLICIT_CONTEXT */
1780
599cee73 1781void
864dbfa3 1782Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM		 1783{
1784 va_list args;
c5be433b
GS		 1785 va_start(args, pat);
1786 vwarner(err, pat, &args);
1787 va_end(args);
1788}
1789
1790void
1791Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1792{
1793 dTHR;
599cee73
PM		 1794 char *message;
1795 HV *stash;
1796 GV *gv;
1797 CV *cv;
06bf62c7
GS		 1798 SV *msv;
1799 STRLEN msglen;
599cee73 1800
5a844595 1801 msv = vmess(pat, args);
06bf62c7 1802 message = SvPV(msv, msglen);
599cee73
PM		 1803
1804 if (ckDEAD(err)) {
1805#ifdef USE_THREADS
b900a521 1806 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
599cee73
PM		 1807#endif /* USE_THREADS */
1808 if (PL_diehook) {
cea2e8a9 1809 /* sv_2cv might call Perl_croak() */
599cee73
PM		 1810 SV *olddiehook = PL_diehook;
1811 ENTER;
1812 SAVESPTR(PL_diehook);
1813 PL_diehook = Nullsv;
1814 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1815 LEAVE;
1816 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1817 dSP;
1818 SV *msg;
1819
1820 ENTER;
06bf62c7 1821 msg = newSVpvn(message, msglen);
599cee73
PM		 1822 SvREADONLY_on(msg);
1823 SAVEFREESV(msg);
1824
1825 PUSHMARK(sp);
1826 XPUSHs(msg);
1827 PUTBACK;
864dbfa3 1828 call_sv((SV*)cv, G_DISCARD);
599cee73
PM		 1829
1830 LEAVE;
1831 }
1832 }
1833 if (PL_in_eval) {
06bf62c7 1834 PL_restartop = die_where(message, msglen);
599cee73
PM		 1835 JMPENV_JUMP(3);
1836 }
bf49b057
GS		 1837 {
1838 PerlIO *serr = Perl_error_log;
1839 PerlIO_write(serr, message, msglen);
1840 (void)PerlIO_flush(serr);
1841 }
599cee73
PM		 1842 my_failure_exit();
1843
1844 }
1845 else {
1846 if (PL_warnhook) {
cea2e8a9 1847 /* sv_2cv might call Perl_warn() */
599cee73
PM		 1848 dTHR;
1849 SV *oldwarnhook = PL_warnhook;
1850 ENTER;
1851 SAVESPTR(PL_warnhook);
1852 PL_warnhook = Nullsv;
1853 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1854 LEAVE;
1855 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1856 dSP;
1857 SV *msg;
1858
1859 ENTER;
06bf62c7 1860 msg = newSVpvn(message, msglen);
599cee73
PM		 1861 SvREADONLY_on(msg);
1862 SAVEFREESV(msg);
1863
1864 PUSHMARK(sp);
1865 XPUSHs(msg);
1866 PUTBACK;
864dbfa3 1867 call_sv((SV*)cv, G_DISCARD);
599cee73
PM		 1868
1869 LEAVE;
1870 return;
1871 }
1872 }
bf49b057
GS		 1873 {
1874 PerlIO *serr = Perl_error_log;
1875 PerlIO_write(serr, message, msglen);
599cee73 1876#ifdef LEAKTEST
bf49b057 1877 DEBUG_L(xstat());
599cee73 1878#endif
bf49b057
GS		 1879 (void)PerlIO_flush(serr);
1880 }
599cee73
PM		 1881 }
1882}
1883
a0d0e21e 1884#ifndef VMS /* VMS' my_setenv() is in VMS.c */
d308986b 1885#if !defined(WIN32) && !defined(__CYGWIN__)
8d063cd8 1886void
864dbfa3 1887Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1888{
f2517201
GS		 1889#ifndef PERL_USE_SAFE_PUTENV
1890 /* most putenv()s leak, so we manipulate environ directly */
79072805 1891 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1892
3280af22 1893 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW		 1894 I32 j;
1895 I32 max;
fe14fcc3
LW		 1896 char **tmpenv;
1897
de3bb511 1898 /*SUPPRESS 530*/
fe14fcc3 1899 for (max = i; environ[max]; max++) ;
f2517201
GS		 1900 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1901 for (j=0; j<max; j++) { /* copy environment */
1902 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1903 strcpy(tmpenv[j], environ[j]);
1904 }
fe14fcc3
LW		 1905 tmpenv[max] = Nullch;
1906 environ = tmpenv; /* tell exec where it is now */
1907 }
a687059c 1908 if (!val) {
f2517201 1909 safesysfree(environ[i]);
a687059c
LW		 1910 while (environ[i]) {
1911 environ[i] = environ[i+1];
1912 i++;
1913 }
1914 return;
1915 }
8d063cd8 1916 if (!environ[i]) { /* does not exist yet */
f2517201 1917 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW		 1918 environ[i+1] = Nullch; /* make sure it's null terminated */
1919 }
fe14fcc3 1920 else
f2517201
GS		 1921 safesysfree(environ[i]);
1922 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1923
a687059c 1924 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
f2517201
GS		 1925
1926#else /* PERL_USE_SAFE_PUTENV */
1927 char *new_env;
1928
1929 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
f2517201 1930 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
f2517201
GS		 1931 (void)putenv(new_env);
1932#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW		 1933}
1934
d308986b
GS		 1935#else /* WIN32 || __CYGWIN__ */
1936#if defined(__CYGWIN__)
1cab015a
EF		 1937/*
1938 * Save environ of perl.exe, currently Cygwin links in separate environ's
1939 * for each exe/dll. Probably should be a member of impure_ptr.
1940 */
1941static char ***Perl_main_environ;
1942
1943EXTERN_C void
1944Perl_my_setenv_init(char ***penviron)
1945{
1946 Perl_main_environ = penviron;
1947}
1948
1949void
0a9fdc5d 1950Perl_my_setenv(pTHX_ char *nam, char *val)
1cab015a
EF		 1951{
1952 /* You can not directly manipulate the environ[] array because
1953 * the routines do some additional work that syncs the Cygwin
1954 * environment with the Windows environment.
1955 */
1956 char *oldstr = environ[setenv_getix(nam)];
1957
1958 if (!val) {
1959 if (!oldstr)
1960 return;
1961 unsetenv(nam);
d702ae42 1962 safesysfree(oldstr);
1cab015a
EF		 1963 return;
1964 }
1965 setenv(nam, val, 1);
1966 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1967 if(oldstr && environ[setenv_getix(nam)] != oldstr)
d702ae42 1968 safesysfree(oldstr);
1cab015a 1969}
3e3baf6d 1970#else /* if WIN32 */
68dc0745 1971
1972void
864dbfa3 1973Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 1974{
3e3baf6d
TB		 1975
1976#ifdef USE_WIN32_RTL_ENV
1977
68dc0745 1978 register char *envstr;
1979 STRLEN namlen = strlen(nam);
3e3baf6d
TB		 1980 STRLEN vallen;
1981 char *oldstr = environ[setenv_getix(nam)];
1982
1983 /* putenv() has totally broken semantics in both the Borland
1984 * and Microsoft CRTLs. They either store the passed pointer in
1985 * the environment without making a copy, or make a copy and don't
1986 * free it. And on top of that, they dont free() old entries that
1987 * are being replaced/deleted. This means the caller must
1988 * free any old entries somehow, or we end up with a memory
1989 * leak every time my_setenv() is called. One might think
1990 * one could directly manipulate environ[], like the UNIX code
1991 * above, but direct changes to environ are not allowed when
1992 * calling putenv(), since the RTLs maintain an internal
1993 * *copy* of environ[]. Bad, bad, *bad* stink.
1994 * GSAR 97-06-07
1995 */
68dc0745 1996
3e3baf6d
TB		 1997 if (!val) {
1998 if (!oldstr)
1999 return;
2000 val = "";
2001 vallen = 0;
2002 }
2003 else
2004 vallen = strlen(val);
f2517201 2005 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 2006 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 2007 (void)PerlEnv_putenv(envstr);
3e3baf6d 2008 if (oldstr)
f2517201 2009 safesysfree(oldstr);
3e3baf6d 2010#ifdef _MSC_VER
f2517201 2011 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB		 2012#endif
2013
2014#else /* !USE_WIN32_RTL_ENV */
2015
ac5c734f
GS		 2016 register char *envstr;
2017 STRLEN len = strlen(nam) + 3;
2018 if (!val) {
2019 val = "";
2020 }
2021 len += strlen(val);
2022 New(904, envstr, len, char);
2023 (void)sprintf(envstr,"%s=%s",nam,val);
2024 (void)PerlEnv_putenv(envstr);
2025 Safefree(envstr);
3e3baf6d
TB		 2026
2027#endif
2028}
2029
2030#endif /* WIN32 */
1cab015a 2031#endif
3e3baf6d
TB		 2032
2033I32
864dbfa3 2034Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB		 2035{
2036 register I32 i, len = strlen(nam);
2037
2038 for (i = 0; environ[i]; i++) {
2039 if (
2040#ifdef WIN32
2041 strnicmp(environ[i],nam,len) == 0
2042#else
2043 strnEQ(environ[i],nam,len)
2044#endif
2045 && environ[i][len] == '=')
2046 break; /* strnEQ must come first to avoid */
2047 } /* potential SEGV's */
2048 return i;
68dc0745 2049}
2050
a0d0e21e 2051#endif /* !VMS */
378cc40b 2052
16d20bd9 2053#ifdef UNLINK_ALL_VERSIONS
79072805 2054I32
864dbfa3 2055Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 2056{
79072805 2057 I32 i;
378cc40b 2058
6ad3d225 2059 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW		 2060 return i ? 0 : -1;
2061}
2062#endif
2063
7a3f2258 2064/* this is a drop-in replacement for bcopy() */
85e6fe83 2065#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 2066char *
7a3f2258 2067Perl_my_bcopy(register const char *from,register char *to,register I32 len)
378cc40b
LW		 2068{
2069 char *retval = to;
2070
7c0587c8
LW		 2071 if (from - to >= 0) {
2072 while (len--)
2073 *to++ = *from++;
2074 }
2075 else {
2076 to += len;
2077 from += len;
2078 while (len--)
faf8582f 2079 *(--to) = *(--from);
7c0587c8 2080 }
378cc40b
LW		 2081 return retval;
2082}
ffed7fef 2083#endif
378cc40b 2084
7a3f2258 2085/* this is a drop-in replacement for memset() */
fc36a67e 2086#ifndef HAS_MEMSET
2087void *
7a3f2258 2088Perl_my_memset(register char *loc, register I32 ch, register I32 len)
fc36a67e 2089{
2090 char *retval = loc;
2091
2092 while (len--)
2093 *loc++ = ch;
2094 return retval;
2095}
2096#endif
2097
7a3f2258 2098/* this is a drop-in replacement for bzero() */
7c0587c8 2099#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 2100char *
7a3f2258 2101Perl_my_bzero(register char *loc, register I32 len)
378cc40b
LW		 2102{
2103 char *retval = loc;
2104
2105 while (len--)
2106 *loc++ = 0;
2107 return retval;
2108}
2109#endif
7c0587c8 2110
7a3f2258 2111/* this is a drop-in replacement for memcmp() */
36477c24 2112#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2113I32
7a3f2258 2114Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
7c0587c8 2115{
36477c24 2116 register U8 *a = (U8 *)s1;
2117 register U8 *b = (U8 *)s2;
79072805 2118 register I32 tmp;
7c0587c8
LW		 2119
2120 while (len--) {
36477c24 2121 if (tmp = *a++ - *b++)
7c0587c8
LW		 2122 return tmp;
2123 }
2124 return 0;
2125}
36477c24 2126#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2127
fe14fcc3 2128#ifndef HAS_VPRINTF
a687059c 2129
85e6fe83 2130#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2131char *
2132#else
2133int
2134#endif
08105a92 2135vsprintf(char *dest, const char *pat, char *args)
a687059c
LW		 2136{
2137 FILE fakebuf;
2138
2139 fakebuf._ptr = dest;
2140 fakebuf._cnt = 32767;
35c8bce7
LW		 2141#ifndef _IOSTRG
2142#define _IOSTRG 0
2143#endif
a687059c
LW		 2144 fakebuf._flag = _IOWRT|_IOSTRG;
2145 _doprnt(pat, args, &fakebuf); /* what a kludge */
2146 (void)putc('\0', &fakebuf);
85e6fe83 2147#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2148 return(dest);
2149#else
2150 return 0; /* perl doesn't use return value */
2151#endif
2152}
2153
fe14fcc3 2154#endif /* HAS_VPRINTF */
a687059c
LW		 2155
2156#ifdef MYSWAP
ffed7fef 2157#if BYTEORDER != 0x4321
a687059c 2158short
864dbfa3 2159Perl_my_swap(pTHX_ short s)
a687059c
LW		 2160{
2161#if (BYTEORDER & 1) == 0
2162 short result;
2163
2164 result = ((s & 255) << 8) + ((s >> 8) & 255);
2165 return result;
2166#else
2167 return s;
2168#endif
2169}
2170
2171long
864dbfa3 2172Perl_my_htonl(pTHX_ long l)
a687059c
LW		 2173{
2174 union {
2175 long result;
ffed7fef 2176 char c[sizeof(long)];
a687059c
LW		 2177 } u;
2178
ffed7fef 2179#if BYTEORDER == 0x1234
a687059c
LW		 2180 u.c[0] = (l >> 24) & 255;
2181 u.c[1] = (l >> 16) & 255;
2182 u.c[2] = (l >> 8) & 255;
2183 u.c[3] = l & 255;
2184 return u.result;
2185#else
ffed7fef 2186#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2187 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2188#else
79072805
LW		 2189 register I32 o;
2190 register I32 s;
a687059c 2191
ffed7fef
LW		 2192 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2193 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW		 2194 }
2195 return u.result;
2196#endif
2197#endif
2198}
2199
2200long
864dbfa3 2201Perl_my_ntohl(pTHX_ long l)
a687059c
LW		 2202{
2203 union {
2204 long l;
ffed7fef 2205 char c[sizeof(long)];
a687059c
LW		 2206 } u;
2207
ffed7fef 2208#if BYTEORDER == 0x1234
a687059c
LW		 2209 u.c[0] = (l >> 24) & 255;
2210 u.c[1] = (l >> 16) & 255;
2211 u.c[2] = (l >> 8) & 255;
2212 u.c[3] = l & 255;
2213 return u.l;
2214#else
ffed7fef 2215#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2216 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2217#else
79072805
LW		 2218 register I32 o;
2219 register I32 s;
a687059c
LW		 2220
2221 u.l = l;
2222 l = 0;
ffed7fef
LW		 2223 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2224 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW		 2225 }
2226 return l;
2227#endif
2228#endif
2229}
2230
ffed7fef 2231#endif /* BYTEORDER != 0x4321 */
988174c1
LW		 2232#endif /* MYSWAP */
2233
2234/*
2235 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2236 * If these functions are defined,
2237 * the BYTEORDER is neither 0x1234 nor 0x4321.
2238 * However, this is not assumed.
2239 * -DWS
2240 */
2241
2242#define HTOV(name,type) \
2243 type \
ba106d47 2244 name (register type n) \
988174c1
LW		 2245 { \
2246 union { \
2247 type value; \
2248 char c[sizeof(type)]; \
2249 } u; \
79072805
LW		 2250 register I32 i; \
2251 register I32 s; \
988174c1
LW		 2252 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2253 u.c[i] = (n >> s) & 0xFF; \
2254 } \
2255 return u.value; \
2256 }
2257
2258#define VTOH(name,type) \
2259 type \
ba106d47 2260 name (register type n) \
988174c1
LW		 2261 { \
2262 union { \
2263 type value; \
2264 char c[sizeof(type)]; \
2265 } u; \
79072805
LW		 2266 register I32 i; \
2267 register I32 s; \
988174c1
LW		 2268 u.value = n; \
2269 n = 0; \
2270 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2271 n += (u.c[i] & 0xFF) << s; \
2272 } \
2273 return n; \
2274 }
2275
2276#if defined(HAS_HTOVS) && !defined(htovs)
2277HTOV(htovs,short)
2278#endif
2279#if defined(HAS_HTOVL) && !defined(htovl)
2280HTOV(htovl,long)
2281#endif
2282#if defined(HAS_VTOHS) && !defined(vtohs)
2283VTOH(vtohs,short)
2284#endif
2285#if defined(HAS_VTOHL) && !defined(vtohl)
2286VTOH(vtohl,long)
2287#endif
a687059c 2288
5f05dabc 2289 /* VMS' my_popen() is in VMS.c, same with OS/2. */
cd39f2b6 2290#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
760ac839 2291PerlIO *
864dbfa3 2292Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW		 2293{
2294 int p[2];
8ac85365 2295 register I32 This, that;
d8a83dd3 2296 register Pid_t pid;
79072805 2297 SV *sv;
1738f5c4 2298 I32 doexec = strNE(cmd,"-");
e446cec8
IZ		 2299 I32 did_pipes = 0;
2300 int pp[2];
a687059c 2301
45bc9206 2302 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ		 2303#ifdef OS2
2304 if (doexec) {
2305 return my_syspopen(cmd,mode);
2306 }
2307#endif
8ac85365
NIS		 2308 This = (*mode == 'w');
2309 that = !This;
3280af22 2310 if (doexec && PL_tainting) {
bbce6d69 2311 taint_env();
2312 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2313 }
c2267164
IZ		 2314 if (PerlProc_pipe(p) < 0)
2315 return Nullfp;
e446cec8
IZ		 2316 if (doexec && PerlProc_pipe(pp) >= 0)
2317 did_pipes = 1;
a687059c
LW		 2318 while ((pid = (doexec?vfork():fork())) < 0) {
2319 if (errno != EAGAIN) {
6ad3d225 2320 PerlLIO_close(p[This]);
e446cec8
IZ		 2321 if (did_pipes) {
2322 PerlLIO_close(pp[0]);
2323 PerlLIO_close(pp[1]);
2324 }
a687059c 2325 if (!doexec)
cea2e8a9 2326 Perl_croak(aTHX_ "Can't fork");
a687059c
LW		 2327 return Nullfp;
2328 }
2329 sleep(5);
2330 }
2331 if (pid == 0) {
79072805
LW		 2332 GV* tmpgv;
2333
30ac6d9b
GS		 2334#undef THIS
2335#undef THAT
a687059c 2336#define THIS that
8ac85365 2337#define THAT This
6ad3d225 2338 PerlLIO_close(p[THAT]);
e446cec8
IZ		 2339 if (did_pipes) {
2340 PerlLIO_close(pp[0]);
2341#if defined(HAS_FCNTL) && defined(F_SETFD)
2342 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2343#endif
2344 }
a687059c 2345 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS		 2346 PerlLIO_dup2(p[THIS], *mode == 'r');
2347 PerlLIO_close(p[THIS]);
a687059c 2348 }
4435c477 2349#ifndef OS2
a687059c 2350 if (doexec) {
a0d0e21e 2351#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW		 2352 int fd;
2353
2354#ifndef NOFILE
2355#define NOFILE 20
2356#endif
6b88bc9c 2357 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ		 2358 if (fd != pp[1])
2359 PerlLIO_close(fd);
ae986130 2360#endif
e446cec8 2361 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2362 PerlProc__exit(1);
a687059c 2363 }
4435c477 2364#endif /* defined OS2 */
de3bb511 2365 /*SUPPRESS 560*/
85e6fe83 2366 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
7766f137 2367 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
3280af22
NIS		 2368 PL_forkprocess = 0;
2369 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW		 2370 return Nullfp;
2371#undef THIS
2372#undef THAT
2373 }
62b28dd9 2374 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2375 PerlLIO_close(p[that]);
e446cec8
IZ		 2376 if (did_pipes)
2377 PerlLIO_close(pp[1]);
8ac85365 2378 if (p[that] < p[This]) {
6ad3d225
GS		 2379 PerlLIO_dup2(p[This], p[that]);
2380 PerlLIO_close(p[This]);
8ac85365 2381 p[This] = p[that];
62b28dd9 2382 }
3280af22 2383 sv = *av_fetch(PL_fdpid,p[This],TRUE);
a0d0e21e 2384 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2385 SvIVX(sv) = pid;
3280af22 2386 PL_forkprocess = pid;
e446cec8
IZ		 2387 if (did_pipes && pid > 0) {
2388 int errkid;
2389 int n = 0, n1;
2390
2391 while (n < sizeof(int)) {
2392 n1 = PerlLIO_read(pp[0],
2393 (void*)(((char*)&errkid)+n),
2394 (sizeof(int)) - n);
2395 if (n1 <= 0)
2396 break;
2397 n += n1;
2398 }
2f96c702
IZ		 2399 PerlLIO_close(pp[0]);
2400 did_pipes = 0;
e446cec8
IZ		 2401 if (n) { /* Error */
2402 if (n != sizeof(int))
cea2e8a9 2403 Perl_croak(aTHX_ "panic: kid popen errno read");
e446cec8
IZ		 2404 errno = errkid; /* Propagate errno from kid */
2405 return Nullfp;
2406 }
2407 }
2408 if (did_pipes)
2409 PerlLIO_close(pp[0]);
8ac85365 2410 return PerlIO_fdopen(p[This], mode);
a687059c 2411}
7c0587c8 2412#else
55497cff 2413#if defined(atarist) || defined(DJGPP)
7c0587c8 2414FILE *popen();
760ac839 2415PerlIO *
864dbfa3 2416Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2417{
760ac839 2418 /* Needs work for PerlIO ! */
55497cff 2419 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 2420 PERL_FLUSHALL_FOR_CHILD;
55497cff 2421 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW		 2422}
2423#endif
2424
2425#endif /* !DOSISH */
a687059c 2426
748a9306 2427#ifdef DUMP_FDS
35ff7856 2428void
864dbfa3 2429Perl_dump_fds(pTHX_ char *s)
ae986130
LW		 2430{
2431 int fd;
2432 struct stat tmpstatbuf;
2433
bf49b057 2434 PerlIO_printf(Perl_debug_log,"%s", s);
ae986130 2435 for (fd = 0; fd < 32; fd++) {
6ad3d225 2436 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
bf49b057 2437 PerlIO_printf(Perl_debug_log," %d",fd);
ae986130 2438 }
bf49b057 2439 PerlIO_printf(Perl_debug_log,"\n");
ae986130 2440}
35ff7856 2441#endif /* DUMP_FDS */
ae986130 2442
fe14fcc3 2443#ifndef HAS_DUP2
fec02dd3 2444int
ba106d47 2445dup2(int oldfd, int newfd)
a687059c 2446{
a0d0e21e 2447#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD		 2448 if (oldfd == newfd)
2449 return oldfd;
6ad3d225 2450 PerlLIO_close(newfd);
fec02dd3 2451 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2452#else
fc36a67e 2453#define DUP2_MAX_FDS 256
2454 int fdtmp[DUP2_MAX_FDS];
79072805 2455 I32 fdx = 0;
ae986130
LW		 2456 int fd;
2457
fe14fcc3 2458 if (oldfd == newfd)
fec02dd3 2459 return oldfd;
6ad3d225 2460 PerlLIO_close(newfd);
fc36a67e 2461 /* good enough for low fd's... */
6ad3d225 2462 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2463 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2464 PerlLIO_close(fd);
fc36a67e 2465 fd = -1;
2466 break;
2467 }
ae986130 2468 fdtmp[fdx++] = fd;
fc36a67e 2469 }
ae986130 2470 while (fdx > 0)
6ad3d225 2471 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2472 return fd;
62b28dd9 2473#endif
a687059c
LW		 2474}
2475#endif
2476
ff68c719 2477
2478#ifdef HAS_SIGACTION
2479
2480Sighandler_t
864dbfa3 2481Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2482{
2483 struct sigaction act, oact;
2484
2485 act.sa_handler = handler;
2486 sigemptyset(&act.sa_mask);
2487 act.sa_flags = 0;
2488#ifdef SA_RESTART
2489 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2490#endif
85264bed
CS		 2491#ifdef SA_NOCLDWAIT
2492 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2493 act.sa_flags |= SA_NOCLDWAIT;
2494#endif
ff68c719 2495 if (sigaction(signo, &act, &oact) == -1)
36477c24 2496 return SIG_ERR;
ff68c719 2497 else
36477c24 2498 return oact.sa_handler;
ff68c719 2499}
2500
2501Sighandler_t
864dbfa3 2502Perl_rsignal_state(pTHX_ int signo)
ff68c719 2503{
2504 struct sigaction oact;
2505
2506 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2507 return SIG_ERR;
2508 else
2509 return oact.sa_handler;
2510}
2511
2512int
864dbfa3 2513Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2514{
2515 struct sigaction act;
2516
2517 act.sa_handler = handler;
2518 sigemptyset(&act.sa_mask);
2519 act.sa_flags = 0;
2520#ifdef SA_RESTART
2521 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2522#endif
85264bed
CS		 2523#ifdef SA_NOCLDWAIT
2524 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2525 act.sa_flags |= SA_NOCLDWAIT;
2526#endif
ff68c719 2527 return sigaction(signo, &act, save);
2528}
2529
2530int
864dbfa3 2531Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2532{
2533 return sigaction(signo, save, (struct sigaction *)NULL);
2534}
2535
2536#else /* !HAS_SIGACTION */
2537
2538Sighandler_t
864dbfa3 2539Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2540{
6ad3d225 2541 return PerlProc_signal(signo, handler);
ff68c719 2542}
2543
2544static int sig_trapped;
2545
2546static
2547Signal_t
4e35701f 2548sig_trap(int signo)
ff68c719 2549{
2550 sig_trapped++;
2551}
2552
2553Sighandler_t
864dbfa3 2554Perl_rsignal_state(pTHX_ int signo)
ff68c719 2555{
2556 Sighandler_t oldsig;
2557
2558 sig_trapped = 0;
6ad3d225
GS		 2559 oldsig = PerlProc_signal(signo, sig_trap);
2560 PerlProc_signal(signo, oldsig);
ff68c719 2561 if (sig_trapped)
7766f137 2562 PerlProc_kill(PerlProc_getpid(), signo);
ff68c719 2563 return oldsig;
2564}
2565
2566int
864dbfa3 2567Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2568{
6ad3d225 2569 *save = PerlProc_signal(signo, handler);
ff68c719 2570 return (*save == SIG_ERR) ? -1 : 0;
2571}
2572
2573int
864dbfa3 2574Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2575{
6ad3d225 2576 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719 2577}
2578
2579#endif /* !HAS_SIGACTION */
2580
5f05dabc 2581 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
cd39f2b6 2582#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
79072805 2583I32
864dbfa3 2584Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2585{
ff68c719 2586 Sigsave_t hstat, istat, qstat;
a687059c 2587 int status;
a0d0e21e 2588 SV **svp;
d8a83dd3
JH		 2589 Pid_t pid;
2590 Pid_t pid2;
03136e13
CS		 2591 bool close_failed;
2592 int saved_errno;
2593#ifdef VMS
2594 int saved_vaxc_errno;
2595#endif
22fae026
TM		 2596#ifdef WIN32
2597 int saved_win32_errno;
2598#endif
a687059c 2599
3280af22 2600 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
d8a83dd3 2601 pid = SvIVX(*svp);
a0d0e21e 2602 SvREFCNT_dec(*svp);
3280af22 2603 *svp = &PL_sv_undef;
ddcf38b7
IZ		 2604#ifdef OS2
2605 if (pid == -1) { /* Opened by popen. */
2606 return my_syspclose(ptr);
2607 }
2608#endif
03136e13
CS		 2609 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2610 saved_errno = errno;
2611#ifdef VMS
2612 saved_vaxc_errno = vaxc$errno;
2613#endif
22fae026
TM		 2614#ifdef WIN32
2615 saved_win32_errno = GetLastError();
2616#endif
03136e13 2617 }
7c0587c8 2618#ifdef UTS
6ad3d225 2619 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2620#endif
ff68c719 2621 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2622 rsignal_save(SIGINT, SIG_IGN, &istat);
2623 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306 2624 do {
1d3434b8
GS		 2625 pid2 = wait4pid(pid, &status, 0);
2626 } while (pid2 == -1 && errno == EINTR);
ff68c719 2627 rsignal_restore(SIGHUP, &hstat);
2628 rsignal_restore(SIGINT, &istat);
2629 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS		 2630 if (close_failed) {
2631 SETERRNO(saved_errno, saved_vaxc_errno);
2632 return -1;
2633 }
1d3434b8 2634 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2635}
4633a7c4
LW		 2636#endif /* !DOSISH */
2637
cd39f2b6 2638#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
79072805 2639I32
d8a83dd3 2640Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
20188a90 2641{
79072805
LW		 2642 SV *sv;
2643 SV** svp;
fc36a67e 2644 char spid[TYPE_CHARS(int)];
20188a90
LW		 2645
2646 if (!pid)
2647 return -1;
20188a90 2648 if (pid > 0) {
7b0972df 2649 sprintf(spid, "%"IVdf, (IV)pid);
3280af22
NIS		 2650 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2651 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2652 *statusp = SvIVX(*svp);
3280af22 2653 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2654 return pid;
2655 }
2656 }
2657 else {
79072805 2658 HE *entry;
20188a90 2659
3280af22
NIS		 2660 hv_iterinit(PL_pidstatus);
2661 if (entry = hv_iternext(PL_pidstatus)) {
a0d0e21e 2662 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2663 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2664 *statusp = SvIVX(sv);
7b0972df 2665 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2666 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2667 return pid;
2668 }
2669 }
79072805 2670#ifdef HAS_WAITPID
367f3c24
IZ		 2671# ifdef HAS_WAITPID_RUNTIME
2672 if (!HAS_WAITPID_RUNTIME)
2673 goto hard_way;
2674# endif
f55ee38a 2675 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ		 2676#endif
2677#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2678 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ		 2679#endif
2680#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2681 hard_way:
a0d0e21e
LW		 2682 {
2683 I32 result;
2684 if (flags)
cea2e8a9 2685 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2686 else {
76e3520e 2687 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW		 2688 pidgone(result,*statusp);
2689 if (result < 0)
2690 *statusp = -1;
2691 }
2692 return result;
a687059c
LW		 2693 }
2694#endif
a687059c 2695}
2d7a9237 2696#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2697
7c0587c8 2698void
de3bb511 2699/*SUPPRESS 590*/
d8a83dd3 2700Perl_pidgone(pTHX_ Pid_t pid, int status)
a687059c 2701{
79072805 2702 register SV *sv;
fc36a67e 2703 char spid[TYPE_CHARS(int)];
a687059c 2704
7b0972df 2705 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2706 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2707 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2708 SvIVX(sv) = status;
20188a90 2709 return;
a687059c
LW		 2710}
2711
55497cff 2712#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2713int pclose();
ddcf38b7
IZ		 2714#ifdef HAS_FORK
2715int /* Cannot prototype with I32
2716 in os2ish.h. */
ba106d47 2717my_syspclose(PerlIO *ptr)
ddcf38b7 2718#else
79072805 2719I32
864dbfa3 2720Perl_my_pclose(pTHX_ PerlIO *ptr)
ddcf38b7 2721#endif
a687059c 2722{
760ac839
LW		 2723 /* Needs work for PerlIO ! */
2724 FILE *f = PerlIO_findFILE(ptr);
2725 I32 result = pclose(f);
933fea7f
GS		 2726#if defined(DJGPP)
2727 result = (result << 8) & 0xff00;
2728#endif
760ac839
LW		 2729 PerlIO_releaseFILE(ptr,f);
2730 return result;
a687059c 2731}
7c0587c8 2732#endif
9f68db38
LW		 2733
2734void
864dbfa3 2735Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2736{
79072805 2737 register I32 todo;
08105a92 2738 register const char *frombase = from;
9f68db38
LW		 2739
2740 if (len == 1) {
08105a92 2741 register const char c = *from;
9f68db38 2742 while (count-- > 0)
5926133d 2743 *to++ = c;
9f68db38
LW		 2744 return;
2745 }
2746 while (count-- > 0) {
2747 for (todo = len; todo > 0; todo--) {
2748 *to++ = *from++;
2749 }
2750 from = frombase;
2751 }
2752}
0f85fab0 2753
463ee0b2 2754U32
65202027 2755Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW		 2756{
2757 long along;
2758
27e2fb84 2759#if CASTFLAGS & 2
34de22dd
LW		 2760# define BIGDOUBLE 2147483648.0
2761 if (f >= BIGDOUBLE)
2762 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2763#endif
0f85fab0
LW		 2764 if (f >= 0.0)
2765 return (unsigned long)f;
2766 along = (long)f;
2767 return (unsigned long)along;
2768}
ed6116ce 2769# undef BIGDOUBLE
5d94fbed 2770
5d94fbed
AD		 2771/* Unfortunately, on some systems the cast_uv() function doesn't
2772 work with the system-supplied definition of ULONG_MAX. The
2773 comparison (f >= ULONG_MAX) always comes out true. It must be a
2774 problem with the compiler constant folding.
2775
2776 In any case, this workaround should be fine on any two's complement
2777 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2778 ccflags.
2779 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2780*/
1eb770ff 2781
2782/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2783 of LONG_(MIN/MAX).
2784 -- Kenneth Albanowski <kjahds@kjahds.com>
2785*/
2786
20cec16a 2787#ifndef MY_UV_MAX
2788# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD		 2789#endif
2790
ed6116ce 2791I32
65202027 2792Perl_cast_i32(pTHX_ NV f)
ed6116ce 2793{
20cec16a 2794 if (f >= I32_MAX)
2795 return (I32) I32_MAX;
2796 if (f <= I32_MIN)
2797 return (I32) I32_MIN;
ed6116ce
LW		 2798 return (I32) f;
2799}
a0d0e21e
LW		 2800
2801IV
65202027 2802Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2803{
25da4f38
IZ		 2804 if (f >= IV_MAX) {
2805 UV uv;
2806
65202027 2807 if (f >= (NV)UV_MAX)
25da4f38
IZ		 2808 return (IV) UV_MAX;
2809 uv = (UV) f;
2810 return (IV)uv;
2811 }
20cec16a 2812 if (f <= IV_MIN)
2813 return (IV) IV_MIN;
a0d0e21e
LW		 2814 return (IV) f;
2815}
5d94fbed
AD		 2816
2817UV
65202027 2818Perl_cast_uv(pTHX_ NV f)
5d94fbed 2819{
20cec16a 2820 if (f >= MY_UV_MAX)
2821 return (UV) MY_UV_MAX;
25da4f38
IZ		 2822 if (f < 0) {
2823 IV iv;
2824
2825 if (f < IV_MIN)
2826 return (UV)IV_MIN;
2827 iv = (IV) f;
2828 return (UV) iv;
2829 }
5d94fbed
AD		 2830 return (UV) f;
2831}
2832
fe14fcc3 2833#ifndef HAS_RENAME
79072805 2834I32
864dbfa3 2835Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2836{
93a17b20
LW		 2837 char *fa = strrchr(a,'/');
2838 char *fb = strrchr(b,'/');
62b28dd9
LW		 2839 struct stat tmpstatbuf1;
2840 struct stat tmpstatbuf2;
46fc3d4c 2841 SV *tmpsv = sv_newmortal();
62b28dd9
LW		 2842
2843 if (fa)
2844 fa++;
2845 else
2846 fa = a;
2847 if (fb)
2848 fb++;
2849 else
2850 fb = b;
2851 if (strNE(a,b))
2852 return FALSE;
2853 if (fa == a)
46fc3d4c 2854 sv_setpv(tmpsv, ".");
62b28dd9 2855 else
46fc3d4c 2856 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2857 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW		 2858 return FALSE;
2859 if (fb == b)
46fc3d4c 2860 sv_setpv(tmpsv, ".");
62b28dd9 2861 else
46fc3d4c 2862 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2863 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW		 2864 return FALSE;
2865 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2866 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2867}
fe14fcc3
LW		 2868#endif /* !HAS_RENAME */
2869
9e24b6e2 2870NV
864dbfa3 2871Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
4f19785b
WSI		 2872{
2873 register char *s = start;
9e24b6e2
JH		 2874 register NV rnv = 0.0;
2875 register UV ruv = 0;
252aa082 2876 register bool seenb = FALSE;
9e24b6e2 2877 register bool overflowed = FALSE;
252aa082
JH		 2878
2879 for (; len-- && *s; s++) {
2880 if (!(*s == '0' || *s == '1')) {
2881 if (*s == '_')
9e24b6e2 2882 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 2883 if (seenb == FALSE && *s == 'b' && ruv == 0) {
252aa082
JH		 2884 /* Disallow 0bbb0b0bbb... */
2885 seenb = TRUE;
252aa082
JH		 2886 continue;
2887 }
2888 else {
2889 dTHR;
627300f0
JH		 2890 if (ckWARN(WARN_DIGIT))
2891 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2892 "Illegal binary digit '%c' ignored", *s);
2893 break;
2894 }
9e24b6e2
JH		 2895 }
2896 if (!overflowed) {
2897 register UV xuv = ruv << 1;
2898
2899 if ((xuv >> 1) != ruv) {
2900 dTHR;
2901 overflowed = TRUE;
2902 rnv = (NV) ruv;
627300f0
JH		 2903 if (ckWARN_d(WARN_OVERFLOW))
2904 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH		 2905 "Integer overflow in binary number");
2906 } else
2907 ruv = xuv | (*s - '0');
2908 }
2909 if (overflowed) {
2910 rnv *= 2;
2911 /* If an NV has not enough bits in its mantissa to
2912 * represent an UV this summing of small low-order numbers
2913 * is a waste of time (because the NV cannot preserve
2914 * the low-order bits anyway): we could just remember when
2915 * did we overflow and in the end just multiply rnv by the
2cc4c2dc 2916 * right amount. */
9e24b6e2 2917 rnv += (*s - '0');
f248d071 2918 }
4f19785b 2919 }
9e24b6e2
JH		 2920 if (!overflowed)
2921 rnv = (NV) ruv;
893fe2c2 2922 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2923#if UVSIZE > 4
893fe2c2
JH		 2924 || (!overflowed && ruv > 0xffffffff )
2925#endif
2926 ) {
252aa082 2927 dTHR;
627300f0
JH		 2928 if (ckWARN(WARN_PORTABLE))
2929 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2930 "Binary number > 0b11111111111111111111111111111111 non-portable");
4f19785b
WSI		 2931 }
2932 *retlen = s - start;
9e24b6e2 2933 return rnv;
4f19785b 2934}
9e24b6e2
JH		 2935
2936NV
864dbfa3 2937Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 2938{
2939 register char *s = start;
9e24b6e2
JH		 2940 register NV rnv = 0.0;
2941 register UV ruv = 0;
2942 register bool overflowed = FALSE;
252aa082
JH		 2943
2944 for (; len-- && *s; s++) {
2945 if (!(*s >= '0' && *s <= '7')) {
2946 if (*s == '_')
9e24b6e2 2947 continue; /* Note: does not check for __ and the like. */
252aa082 2948 else {
f84f607d
JH		 2949 /* Allow \octal to work the DWIM way (that is, stop scanning
2950 * as soon as non-octal characters are seen, complain only iff
2951 * someone seems to want to use the digits eight and nine). */
252aa082
JH		 2952 if (*s == '8' || *s == '9') {
2953 dTHR;
627300f0
JH		 2954 if (ckWARN(WARN_DIGIT))
2955 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2956 "Illegal octal digit '%c' ignored", *s);
2957 }
2958 break;
2959 }
55497cff 2960 }
9e24b6e2 2961 if (!overflowed) {
893fe2c2 2962 register UV xuv = ruv << 3;
9e24b6e2
JH		 2963
2964 if ((xuv >> 3) != ruv) {
2965 dTHR;
2966 overflowed = TRUE;
2967 rnv = (NV) ruv;
627300f0
JH		 2968 if (ckWARN_d(WARN_OVERFLOW))
2969 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH		 2970 "Integer overflow in octal number");
2971 } else
2972 ruv = xuv | (*s - '0');
2973 }
2974 if (overflowed) {
2975 rnv *= 8.0;
2976 /* If an NV has not enough bits in its mantissa to
2977 * represent an UV this summing of small low-order numbers
2978 * is a waste of time (because the NV cannot preserve
2979 * the low-order bits anyway): we could just remember when
2980 * did we overflow and in the end just multiply rnv by the
2981 * right amount of 8-tuples. */
2982 rnv += (NV)(*s - '0');
2983 }
fe14fcc3 2984 }
9e24b6e2
JH		 2985 if (!overflowed)
2986 rnv = (NV) ruv;
893fe2c2 2987 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2988#if UVSIZE > 4
893fe2c2
JH		 2989 || (!overflowed && ruv > 0xffffffff )
2990#endif
2991 ) {
d008e5eb 2992 dTHR;
627300f0
JH		 2993 if (ckWARN(WARN_PORTABLE))
2994 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2995 "Octal number > 037777777777 non-portable");
d008e5eb 2996 }
fe14fcc3 2997 *retlen = s - start;
9e24b6e2 2998 return rnv;
fe14fcc3
LW		 2999}
3000
9e24b6e2 3001NV
864dbfa3 3002Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 3003{
3004 register char *s = start;
9e24b6e2
JH		 3005 register NV rnv = 0.0;
3006 register UV ruv = 0;
252aa082 3007 register bool seenx = FALSE;
9e24b6e2 3008 register bool overflowed = FALSE;
9e24b6e2 3009 char *hexdigit;
fe14fcc3 3010
9e24b6e2
JH		 3011 for (; len-- && *s; s++) {
3012 hexdigit = strchr((char *) PL_hexdigit, *s);
3013 if (!hexdigit) {
3014 if (*s == '_')
3015 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 3016 if (seenx == FALSE && *s == 'x' && ruv == 0) {
252aa082
JH		 3017 /* Disallow 0xxx0x0xxx... */
3018 seenx = TRUE;
252aa082
JH		 3019 continue;
3020 }
a0ed51b3 3021 else {
d008e5eb 3022 dTHR;
627300f0
JH		 3023 if (ckWARN(WARN_DIGIT))
3024 Perl_warner(aTHX_ WARN_DIGIT,
252aa082 3025 "Illegal hexadecimal digit '%c' ignored", *s);
a0ed51b3
LW		 3026 break;
3027 }
3028 }
9e24b6e2
JH		 3029 if (!overflowed) {
3030 register UV xuv = ruv << 4;
3031
3032 if ((xuv >> 4) != ruv) {
3033 dTHR;
3034 overflowed = TRUE;
3035 rnv = (NV) ruv;
627300f0
JH		 3036 if (ckWARN_d(WARN_OVERFLOW))
3037 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH		 3038 "Integer overflow in hexadecimal number");
3039 } else
3040 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3041 }
3042 if (overflowed) {
3043 rnv *= 16.0;
3044 /* If an NV has not enough bits in its mantissa to
3045 * represent an UV this summing of small low-order numbers
3046 * is a waste of time (because the NV cannot preserve
3047 * the low-order bits anyway): we could just remember when
3048 * did we overflow and in the end just multiply rnv by the
3049 * right amount of 16-tuples. */
3050 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3051 }
6ff81951 3052 }
9e24b6e2
JH		 3053 if (!overflowed)
3054 rnv = (NV) ruv;
893fe2c2 3055 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3056#if UVSIZE > 4
893fe2c2
JH		 3057 || (!overflowed && ruv > 0xffffffff )
3058#endif
3059 ) {
252aa082 3060 dTHR;
627300f0
JH		 3061 if (ckWARN(WARN_PORTABLE))
3062 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082
JH		 3063 "Hexadecimal number > 0xffffffff non-portable");
3064 }
fe14fcc3 3065 *retlen = s - start;
9e24b6e2 3066 return rnv;
fe14fcc3 3067}
760ac839 3068
491527d0 3069char*
864dbfa3 3070Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0
GS		 3071{
3072 dTHR;
3073 char *xfound = Nullch;
3074 char *xfailed = Nullch;
0f31cffe 3075 char tmpbuf[MAXPATHLEN];
491527d0
GS		 3076 register char *s;
3077 I32 len;
3078 int retval;
3079#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3080# define SEARCH_EXTS ".bat", ".cmd", NULL
3081# define MAX_EXT_LEN 4
3082#endif
3083#ifdef OS2
3084# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3085# define MAX_EXT_LEN 4
3086#endif
3087#ifdef VMS
3088# define SEARCH_EXTS ".pl", ".com", NULL
3089# define MAX_EXT_LEN 4
3090#endif
3091 /* additional extensions to try in each dir if scriptname not found */
3092#ifdef SEARCH_EXTS
3093 char *exts[] = { SEARCH_EXTS };
3094 char **ext = search_ext ? search_ext : exts;
3095 int extidx = 0, i = 0;
3096 char *curext = Nullch;
3097#else
3098# define MAX_EXT_LEN 0
3099#endif
3100
3101 /*
3102 * If dosearch is true and if scriptname does not contain path
3103 * delimiters, search the PATH for scriptname.
3104 *
3105 * If SEARCH_EXTS is also defined, will look for each
3106 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3107 * while searching the PATH.
3108 *
3109 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3110 * proceeds as follows:
3111 * If DOSISH or VMSISH:
3112 * + look for ./scriptname{,.foo,.bar}
3113 * + search the PATH for scriptname{,.foo,.bar}
3114 *
3115 * If !DOSISH:
3116 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3117 * this will not look in '.' if it's not in the PATH)
3118 */
84486fc6 3119 tmpbuf[0] = '\0';
491527d0
GS		 3120
3121#ifdef VMS
3122# ifdef ALWAYS_DEFTYPES
3123 len = strlen(scriptname);
3124 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3125 int hasdir, idx = 0, deftypes = 1;
3126 bool seen_dot = 1;
3127
3128 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3129# else
3130 if (dosearch) {
3131 int hasdir, idx = 0, deftypes = 1;
3132 bool seen_dot = 1;
3133
3134 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3135# endif
3136 /* The first time through, just add SEARCH_EXTS to whatever we
3137 * already have, so we can check for default file types. */
3138 while (deftypes ||
84486fc6 3139 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS		 3140 {
3141 if (deftypes) {
3142 deftypes = 0;
84486fc6 3143 *tmpbuf = '\0';
491527d0 3144 }
84486fc6
GS		 3145 if ((strlen(tmpbuf) + strlen(scriptname)
3146 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 3147 continue; /* don't search dir with too-long name */
84486fc6 3148 strcat(tmpbuf, scriptname);
491527d0
GS		 3149#else /* !VMS */
3150
3151#ifdef DOSISH
3152 if (strEQ(scriptname, "-"))
3153 dosearch = 0;
3154 if (dosearch) { /* Look in '.' first. */
3155 char *cur = scriptname;
3156#ifdef SEARCH_EXTS
3157 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3158 while (ext[i])
3159 if (strEQ(ext[i++],curext)) {
3160 extidx = -1; /* already has an ext */
3161 break;
3162 }
3163 do {
3164#endif
3165 DEBUG_p(PerlIO_printf(Perl_debug_log,
3166 "Looking for %s\n",cur));
017f25f1
IZ		 3167 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3168 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS		 3169 dosearch = 0;
3170 scriptname = cur;
3171#ifdef SEARCH_EXTS
3172 break;
3173#endif
3174 }
3175#ifdef SEARCH_EXTS
3176 if (cur == scriptname) {
3177 len = strlen(scriptname);
84486fc6 3178 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 3179 break;
84486fc6 3180 cur = strcpy(tmpbuf, scriptname);
491527d0
GS		 3181 }
3182 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 3183 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS		 3184#endif
3185 }
3186#endif
3187
cd39f2b6
JH		 3188#ifdef MACOS_TRADITIONAL
3189 if (dosearch && !strchr(scriptname, ':') &&
3190 (s = PerlEnv_getenv("Commands")))
3191#else
491527d0
GS		 3192 if (dosearch && !strchr(scriptname, '/')
3193#ifdef DOSISH
3194 && !strchr(scriptname, '\\')
3195#endif
cd39f2b6
JH		 3196 && (s = PerlEnv_getenv("PATH")))
3197#endif
3198 {
491527d0
GS		 3199 bool seen_dot = 0;
3200
3280af22
NIS		 3201 PL_bufend = s + strlen(s);
3202 while (s < PL_bufend) {
cd39f2b6
JH		 3203#ifdef MACOS_TRADITIONAL
3204 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3205 ',',
3206 &len);
3207#else
491527d0
GS		 3208#if defined(atarist) || defined(DOSISH)
3209 for (len = 0; *s
3210# ifdef atarist
3211 && *s != ','
3212# endif
3213 && *s != ';'; len++, s++) {
84486fc6
GS		 3214 if (len < sizeof tmpbuf)
3215 tmpbuf[len] = *s;
491527d0 3216 }
84486fc6
GS		 3217 if (len < sizeof tmpbuf)
3218 tmpbuf[len] = '\0';
491527d0 3219#else /* ! (atarist || DOSISH) */
3280af22 3220 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS		 3221 ':',
3222 &len);
3223#endif /* ! (atarist || DOSISH) */
cd39f2b6 3224#endif /* MACOS_TRADITIONAL */
3280af22 3225 if (s < PL_bufend)
491527d0 3226 s++;
84486fc6 3227 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0 3228 continue; /* don't search dir with too-long name */
cd39f2b6
JH		 3229#ifdef MACOS_TRADITIONAL
3230 if (len && tmpbuf[len - 1] != ':')
3231 tmpbuf[len++] = ':';
3232#else
491527d0 3233 if (len
61ae2fbf 3234#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS		 3235 && tmpbuf[len - 1] != '/'
3236 && tmpbuf[len - 1] != '\\'
491527d0
GS		 3237#endif
3238 )
84486fc6
GS		 3239 tmpbuf[len++] = '/';
3240 if (len == 2 && tmpbuf[0] == '.')
491527d0 3241 seen_dot = 1;
cd39f2b6 3242#endif
84486fc6 3243 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS		 3244#endif /* !VMS */
3245
3246#ifdef SEARCH_EXTS
84486fc6 3247 len = strlen(tmpbuf);
491527d0
GS		 3248 if (extidx > 0) /* reset after previous loop */
3249 extidx = 0;
3250 do {
3251#endif
84486fc6 3252 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3253 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ		 3254 if (S_ISDIR(PL_statbuf.st_mode)) {
3255 retval = -1;
3256 }
491527d0
GS		 3257#ifdef SEARCH_EXTS
3258 } while ( retval < 0 /* not there */
3259 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3260 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS		 3261 );
3262#endif
3263 if (retval < 0)
3264 continue;
3280af22
NIS		 3265 if (S_ISREG(PL_statbuf.st_mode)
3266 && cando(S_IRUSR,TRUE,&PL_statbuf)
73811745 3267#if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3280af22 3268 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS		 3269#endif
3270 )
3271 {
84486fc6 3272 xfound = tmpbuf; /* bingo! */
491527d0
GS		 3273 break;
3274 }
3275 if (!xfailed)
84486fc6 3276 xfailed = savepv(tmpbuf);
491527d0
GS		 3277 }
3278#ifndef DOSISH
017f25f1
IZ		 3279 if (!xfound && !seen_dot && !xfailed &&
3280 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3281 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS		 3282#endif
3283 seen_dot = 1; /* Disable message. */
9ccb31f9
GS		 3284 if (!xfound) {
3285 if (flags & 1) { /* do or die? */
cea2e8a9 3286 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS		 3287 (xfailed ? "execute" : "find"),
3288 (xfailed ? xfailed : scriptname),
3289 (xfailed ? "" : " on PATH"),
3290 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3291 }
3292 scriptname = Nullch;
3293 }
491527d0
GS		 3294 if (xfailed)
3295 Safefree(xfailed);
3296 scriptname = xfound;
3297 }
9ccb31f9 3298 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS		 3299}
3300
3301
11343788 3302#ifdef USE_THREADS
12ca11f6
MB		 3303#ifdef FAKE_THREADS
3304/* Very simplistic scheduler for now */
3305void
3306schedule(void)
3307{
c7848ba1 3308 thr = thr->i.next_run;
12ca11f6
MB		 3309}
3310
3311void
864dbfa3 3312Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB		 3313{
3314 *cp = 0;
3315}
3316
3317void
864dbfa3 3318Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3319{
51dd5992 3320 perl_os_thread t;
12ca11f6
MB		 3321 perl_cond cond = *cp;
3322
3323 if (!cond)
3324 return;
3325 t = cond->thread;
3326 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3327 t->i.next_run = thr->i.next_run;
3328 thr->i.next_run->i.prev_run = t;
3329 t->i.prev_run = thr;
3330 thr->i.next_run = t;
3331 thr->i.wait_queue = 0;
12ca11f6
MB		 3332 /* Remove from the wait queue */
3333 *cp = cond->next;
3334 Safefree(cond);
3335}
3336
3337void
864dbfa3 3338Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3339{
51dd5992 3340 perl_os_thread t;
12ca11f6
MB		 3341 perl_cond cond, cond_next;
3342
3343 for (cond = *cp; cond; cond = cond_next) {
3344 t = cond->thread;
3345 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3346 t->i.next_run = thr->i.next_run;
3347 thr->i.next_run->i.prev_run = t;
3348 t->i.prev_run = thr;
3349 thr->i.next_run = t;
3350 thr->i.wait_queue = 0;
12ca11f6
MB		 3351 /* Remove from the wait queue */
3352 cond_next = cond->next;
3353 Safefree(cond);
3354 }
3355 *cp = 0;
3356}
3357
3358void
864dbfa3 3359Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB		 3360{
3361 perl_cond cond;
3362
c7848ba1 3363 if (thr->i.next_run == thr)
cea2e8a9 3364 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
12ca11f6 3365
0f15f207 3366 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB		 3367 cond->thread = thr;
3368 cond->next = *cp;
3369 *cp = cond;
c7848ba1 3370 thr->i.wait_queue = cond;
12ca11f6 3371 /* Remove ourselves from runnable queue */
c7848ba1
MB		 3372 thr->i.next_run->i.prev_run = thr->i.prev_run;
3373 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB		 3374}
3375#endif /* FAKE_THREADS */
3376
0d85d877 3377#ifdef PTHREAD_GETSPECIFIC_INT
52e1cb5e 3378struct perl_thread *
864dbfa3 3379Perl_getTHR(pTHX)
11343788
MB		 3380{
3381 pthread_addr_t t;
3382
6b88bc9c 3383 if (pthread_getspecific(PL_thr_key, &t))
cea2e8a9 3384 Perl_croak(aTHX_ "panic: pthread_getspecific");
52e1cb5e 3385 return (struct perl_thread *) t;
11343788 3386}
0d85d877 3387#endif
f93b4edd
MB		 3388
3389MAGIC *
864dbfa3 3390Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB		 3391{
3392 MAGIC *mg;
3393
3394 SvUPGRADE(sv, SVt_PVMG);
3395 mg = mg_find(sv, 'm');
3396 if (!mg) {
3397 condpair_t *cp;
3398
3399 New(53, cp, 1, condpair_t);
3400 MUTEX_INIT(&cp->mutex);
3401 COND_INIT(&cp->owner_cond);
3402 COND_INIT(&cp->cond);
3403 cp->owner = 0;
1feb2720 3404 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB		 3405 mg = mg_find(sv, 'm');
3406 if (mg) {
3407 /* someone else beat us to initialising it */
1feb2720 3408 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB		 3409 MUTEX_DESTROY(&cp->mutex);
3410 COND_DESTROY(&cp->owner_cond);
3411 COND_DESTROY(&cp->cond);
3412 Safefree(cp);
3413 }
3414 else {
3415 sv_magic(sv, Nullsv, 'm', 0, 0);
3416 mg = SvMAGIC(sv);
3417 mg->mg_ptr = (char *)cp;
565764a8 3418 mg->mg_len = sizeof(cp);
1feb2720 3419 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
bf49b057 3420 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
c7848ba1 3421 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB		 3422 }
3423 }
3424 return mg;
3425}
a863c7d1
MB		 3426
3427/*
199100c8
MB		 3428 * Make a new perl thread structure using t as a prototype. Some of the
3429 * fields for the new thread are copied from the prototype thread, t,
3430 * so t should not be running in perl at the time this function is
3431 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3432 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3433 */
52e1cb5e 3434struct perl_thread *
864dbfa3 3435Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3436{
c5be433b 3437#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3438 struct perl_thread *thr;
cea2e8a9 3439#endif
a863c7d1 3440 SV *sv;
199100c8
MB		 3441 SV **svp;
3442 I32 i;
3443
79cb57f6 3444 sv = newSVpvn("", 0);
52e1cb5e
JH		 3445 SvGROW(sv, sizeof(struct perl_thread) + 1);
3446 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3447 thr = (Thread) SvPVX(sv);
949ced2d 3448#ifdef DEBUGGING
52e1cb5e 3449 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS		 3450 PL_markstack = 0;
3451 PL_scopestack = 0;
3452 PL_savestack = 0;
3453 PL_retstack = 0;
3454 PL_dirty = 0;
3455 PL_localizing = 0;
949ced2d
GS		 3456 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3457#else
3458 Zero(thr, 1, struct perl_thread);
3459#endif
199100c8
MB		 3460
3461 thr->oursv = sv;
cea2e8a9 3462 init_stacks();
a863c7d1 3463
533c011a 3464 PL_curcop = &PL_compiling;
c5be433b 3465 thr->interp = t->interp;
199100c8 3466 thr->cvcache = newHV();
54b9620d 3467 thr->threadsv = newAV();
a863c7d1 3468 thr->specific = newAV();
79cb57f6 3469 thr->errsv = newSVpvn("", 0);
a863c7d1
MB		 3470 thr->flags = THRf_R_JOINABLE;
3471 MUTEX_INIT(&thr->mutex);
199100c8 3472
5c831c24 3473 JMPENV_BOOTSTRAP;
533c011a 3474
faef0170 3475 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
533c011a
NIS		 3476 PL_restartop = 0;
3477
b099ddc0 3478 PL_statname = NEWSV(66,0);
5a844595 3479 PL_errors = newSVpvn("", 0);
b099ddc0 3480 PL_maxscream = -1;
0b94c7bb
GS		 3481 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3482 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3483 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3484 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3485 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
b099ddc0
GS		 3486 PL_regindent = 0;
3487 PL_reginterp_cnt = 0;
3488 PL_lastscream = Nullsv;
3489 PL_screamfirst = 0;
3490 PL_screamnext = 0;
3491 PL_reg_start_tmp = 0;
3492 PL_reg_start_tmpl = 0;
14ed4b74 3493 PL_reg_poscache = Nullch;
b099ddc0
GS		 3494
3495 /* parent thread's data needs to be locked while we make copy */
3496 MUTEX_LOCK(&t->mutex);
3497
312caa8e
CS		 3498 PL_protect = t->Tprotect;
3499
b099ddc0
GS		 3500 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3501 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3502 PL_curstash = t->Tcurstash; /* always be set to main? */
3503
6b88bc9c 3504 PL_tainted = t->Ttainted;
84fee439
NIS		 3505 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3506 PL_nrs = newSVsv(t->Tnrs);
3507 PL_rs = SvREFCNT_inc(PL_nrs);
3508 PL_last_in_gv = Nullgv;
3509 PL_ofslen = t->Tofslen;
3510 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3511 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3512 PL_chopset = t->Tchopset;
84fee439
NIS		 3513 PL_bodytarget = newSVsv(t->Tbodytarget);
3514 PL_toptarget = newSVsv(t->Ttoptarget);
5c831c24
GS		 3515 if (t->Tformtarget == t->Ttoptarget)
3516 PL_formtarget = PL_toptarget;
3517 else
3518 PL_formtarget = PL_bodytarget;
533c011a 3519
54b9620d
MB		 3520 /* Initialise all per-thread SVs that the template thread used */
3521 svp = AvARRAY(t->threadsv);
93965878 3522 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 3523 if (*svp && *svp != &PL_sv_undef) {
199100c8 3524 SV *sv = newSVsv(*svp);
54b9620d 3525 av_store(thr->threadsv, i, sv);
533c011a 3526 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
bf49b057 3527 DEBUG_S(PerlIO_printf(Perl_debug_log,
f1dbda3d
JH		 3528 "new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
3529 (IV)i, t, thr));
199100c8
MB		 3530 }
3531 }
940cb80d 3532 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 3533
533c011a
NIS		 3534 MUTEX_LOCK(&PL_threads_mutex);
3535 PL_nthreads++;
3536 thr->tid = ++PL_threadnum;
199100c8
MB		 3537 thr->next = t->next;
3538 thr->prev = t;
3539 t->next = thr;
3540 thr->next->prev = thr;
533c011a 3541 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 3542
b099ddc0
GS		 3543 /* done copying parent's state */
3544 MUTEX_UNLOCK(&t->mutex);
3545
a863c7d1 3546#ifdef HAVE_THREAD_INTERN
4f63d024 3547 Perl_init_thread_intern(thr);
a863c7d1 3548#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB		 3549 return thr;
3550}
11343788 3551#endif /* USE_THREADS */
760ac839
LW		 3552
3553#ifdef HUGE_VAL
3554/*
3555 * This hack is to force load of "huge" support from libm.a
3556 * So it is in perl for (say) POSIX to use.
3557 * Needed for SunOS with Sun's 'acc' for example.
3558 */
65202027 3559NV
8ac85365 3560Perl_huge(void)
760ac839
LW		 3561{
3562 return HUGE_VAL;
3563}
3564#endif
4e35701f 3565
22239a37
NIS		 3566#ifdef PERL_GLOBAL_STRUCT
3567struct perl_vars *
864dbfa3 3568Perl_GetVars(pTHX)
22239a37 3569{
533c011a 3570 return &PL_Vars;
22239a37 3571}
31fb1209
NIS		 3572#endif
3573
3574char **
864dbfa3 3575Perl_get_op_names(pTHX)
31fb1209 3576{
22c35a8c 3577 return PL_op_name;
31fb1209
NIS		 3578}
3579
3580char **
864dbfa3 3581Perl_get_op_descs(pTHX)
31fb1209 3582{
22c35a8c 3583 return PL_op_desc;
31fb1209 3584}
9e6b2b00
GS		 3585
3586char *
864dbfa3 3587Perl_get_no_modify(pTHX)
9e6b2b00 3588{
22c35a8c 3589 return (char*)PL_no_modify;
9e6b2b00
GS		 3590}
3591
3592U32 *
864dbfa3 3593Perl_get_opargs(pTHX)
9e6b2b00 3594{
22c35a8c 3595 return PL_opargs;
9e6b2b00 3596}
51aa15f3 3597
0cb96387
GS		 3598PPADDR_t*
3599Perl_get_ppaddr(pTHX)
3600{
3601 return &PL_ppaddr;
3602}
3603
a6c40364
GS		 3604#ifndef HAS_GETENV_LEN
3605char *
864dbfa3 3606Perl_getenv_len(pTHX_ char *env_elem, unsigned long *len)
a6c40364
GS		 3607{
3608 char *env_trans = PerlEnv_getenv(env_elem);
3609 if (env_trans)
3610 *len = strlen(env_trans);
3611 return env_trans;
f675dbe5
CB		 3612}
3613#endif
3614
dc9e4912
GS		 3615
3616MGVTBL*
864dbfa3 3617Perl_get_vtbl(pTHX_ int vtbl_id)
dc9e4912
GS		 3618{
3619 MGVTBL* result = Null(MGVTBL*);
3620
3621 switch(vtbl_id) {
3622 case want_vtbl_sv:
3623 result = &PL_vtbl_sv;
3624 break;
3625 case want_vtbl_env:
3626 result = &PL_vtbl_env;
3627 break;
3628 case want_vtbl_envelem:
3629 result = &PL_vtbl_envelem;
3630 break;
3631 case want_vtbl_sig:
3632 result = &PL_vtbl_sig;
3633 break;
3634 case want_vtbl_sigelem:
3635 result = &PL_vtbl_sigelem;
3636 break;
3637 case want_vtbl_pack:
3638 result = &PL_vtbl_pack;
3639 break;
3640 case want_vtbl_packelem:
3641 result = &PL_vtbl_packelem;
3642 break;
3643 case want_vtbl_dbline:
3644 result = &PL_vtbl_dbline;
3645 break;
3646 case want_vtbl_isa:
3647 result = &PL_vtbl_isa;
3648 break;
3649 case want_vtbl_isaelem:
3650 result = &PL_vtbl_isaelem;
3651 break;
3652 case want_vtbl_arylen:
3653 result = &PL_vtbl_arylen;
3654 break;
3655 case want_vtbl_glob:
3656 result = &PL_vtbl_glob;
3657 break;
3658 case want_vtbl_mglob:
3659 result = &PL_vtbl_mglob;
3660 break;
3661 case want_vtbl_nkeys:
3662 result = &PL_vtbl_nkeys;
3663 break;
3664 case want_vtbl_taint:
3665 result = &PL_vtbl_taint;
3666 break;
3667 case want_vtbl_substr:
3668 result = &PL_vtbl_substr;
3669 break;
3670 case want_vtbl_vec:
3671 result = &PL_vtbl_vec;
3672 break;
3673 case want_vtbl_pos:
3674 result = &PL_vtbl_pos;
3675 break;
3676 case want_vtbl_bm:
3677 result = &PL_vtbl_bm;
3678 break;
3679 case want_vtbl_fm:
3680 result = &PL_vtbl_fm;
3681 break;
3682 case want_vtbl_uvar:
3683 result = &PL_vtbl_uvar;
3684 break;
3685#ifdef USE_THREADS
3686 case want_vtbl_mutex:
3687 result = &PL_vtbl_mutex;
3688 break;
3689#endif
3690 case want_vtbl_defelem:
3691 result = &PL_vtbl_defelem;
3692 break;
3693 case want_vtbl_regexp:
3694 result = &PL_vtbl_regexp;
3695 break;
3696 case want_vtbl_regdata:
3697 result = &PL_vtbl_regdata;
3698 break;
3699 case want_vtbl_regdatum:
3700 result = &PL_vtbl_regdatum;
3701 break;
3c90161d 3702#ifdef USE_LOCALE_COLLATE
dc9e4912
GS		 3703 case want_vtbl_collxfrm:
3704 result = &PL_vtbl_collxfrm;
3705 break;
3c90161d 3706#endif
dc9e4912
GS		 3707 case want_vtbl_amagic:
3708 result = &PL_vtbl_amagic;
3709 break;
3710 case want_vtbl_amagicelem:
3711 result = &PL_vtbl_amagicelem;
3712 break;
810b8aa5
GS		 3713 case want_vtbl_backref:
3714 result = &PL_vtbl_backref;
3715 break;
dc9e4912
GS		 3716 }
3717 return result;
3718}
3719
767df6a1 3720I32
864dbfa3 3721Perl_my_fflush_all(pTHX)
767df6a1
JH		 3722{
3723#ifdef FFLUSH_NULL
ce720889 3724 return PerlIO_flush(NULL);
767df6a1
JH		 3725#else
3726 long open_max = -1;
ed39a0f2 3727# if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
d2201af2
AD		 3728# ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3729 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3730# else
767df6a1
JH		 3731# if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3732 open_max = sysconf(_SC_OPEN_MAX);
3733# else
3734# ifdef FOPEN_MAX
d2201af2 3735 open_max = FOPEN_MAX;
767df6a1
JH		 3736# else
3737# ifdef OPEN_MAX
d2201af2 3738 open_max = OPEN_MAX;
767df6a1
JH		 3739# else
3740# ifdef _NFILE
d2201af2 3741 open_max = _NFILE;
767df6a1
JH		 3742# endif
3743# endif
3744# endif
3745# endif
d2201af2 3746# endif
767df6a1
JH		 3747 if (open_max > 0) {
3748 long i;
3749 for (i = 0; i < open_max; i++)
d2201af2
AD		 3750 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3751 STDIO_STREAM_ARRAY[i]._file < open_max &&
3752 STDIO_STREAM_ARRAY[i]._flag)
3753 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
767df6a1
JH		 3754 return 0;
3755 }
3756# endif
3757 SETERRNO(EBADF,RMS$_IFI);
3758 return EOF;
3759#endif
3760}
097ee67d 3761
65202027 3762NV
69282e91
GS		 3763Perl_my_atof(pTHX_ const char* s)
3764{
097ee67d 3765#ifdef USE_LOCALE_NUMERIC
d43ce814 3766 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
65202027 3767 NV x, y;
097ee67d 3768
65202027 3769 x = Perl_atof(s);
097ee67d 3770 SET_NUMERIC_STANDARD();
65202027 3771 y = Perl_atof(s);
097ee67d
JH		 3772 SET_NUMERIC_LOCAL();
3773 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3774 return y;
3775 return x;
65202027
DS		 3776 }
3777 else
3778 return Perl_atof(s);
097ee67d 3779#else
65202027 3780 return Perl_atof(s);
097ee67d
JH		 3781#endif
3782}
69282e91
GS		 3783
3784void
3785Perl_report_closed_fh(pTHX_ GV *gv, IO *io, const char *func, const char *obj)
3786{
3787 SV *sv;
3788 char *name;
3789
3790 assert(gv);
3791
3792 sv = sv_newmortal();
3793 gv_efullname3(sv, gv, Nullch);
3794 name = SvPVX(sv);
3795
3796 Perl_warner(aTHX_ WARN_CLOSED, "%s() on closed %s %s", func, obj, name);
3797
3798 if (io && IoDIRP(io))
3799 Perl_warner(aTHX_ WARN_CLOSED,
3800 "(Are you trying to call %s() on dirhandle %s?)\n",
3801 func, name);
3802}
Unnamed repository; edit this file 'description' to name the repository.