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S_init_interp is a better place to diddle with PL_opargs
[perl5.git] / util.c
CommitLineData
a0d0e21e 1/* util.c
a687059c 2 *
4eb8286e 3 * Copyright (c) 1991-1999, 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
cd39f2b6
JH		 81#ifdef MACOS_TRADITIONAL
82extern void * gSacrificialGoat;
83#define MAC_CHECK_GOAT(p) if (!gSacrificialGoat && p) { PerlMem_free(p); p = NULL; } else
84#endif
85
bd4080b3 86Malloc_t
4f63d024 87Perl_safesysmalloc(MEM_SIZE size)
8d063cd8 88{
54aff467 89 dTHX;
bd4080b3 90 Malloc_t ptr;
55497cff 91#ifdef HAS_64K_LIMIT
62b28dd9 92 if (size > 0xffff) {
bf49b057 93 PerlIO_printf(Perl_error_log,
16cebae2 94 "Allocation too large: %lx\n", size) FLUSH;
54aff467 95 my_exit(1);
62b28dd9 96 }
55497cff 97#endif /* HAS_64K_LIMIT */
34de22dd
LW		 98#ifdef DEBUGGING
99 if ((long)size < 0)
4f63d024 100 Perl_croak_nocontext("panic: malloc");
34de22dd 101#endif
6ad3d225 102 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
cd39f2b6
JH		 103#ifdef MACOS_TRADITIONAL
104 MAC_CHECK_GOAT(ptr);
105#endif
7b0972df 106 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05d) malloc %ld bytes\n",PTR2UV(ptr),PL_an++,(long)size));
8d063cd8
LW		 107 if (ptr != Nullch)
108 return ptr;
3280af22 109 else if (PL_nomemok)
7c0587c8 110 return Nullch;
8d063cd8 111 else {
bf49b057 112 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 113 my_exit(1);
4e35701f 114 return Nullch;
8d063cd8
LW		 115 }
116 /*NOTREACHED*/
117}
118
f2517201 119/* paranoid version of system's realloc() */
8d063cd8 120
bd4080b3 121Malloc_t
4f63d024 122Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 123{
54aff467 124 dTHX;
bd4080b3 125 Malloc_t ptr;
ecfc5424 126#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
6ad3d225 127 Malloc_t PerlMem_realloc();
ecfc5424 128#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 129
55497cff 130#ifdef HAS_64K_LIMIT
5f05dabc 131 if (size > 0xffff) {
bf49b057 132 PerlIO_printf(Perl_error_log,
5f05dabc 133 "Reallocation too large: %lx\n", size) FLUSH;
54aff467 134 my_exit(1);
5f05dabc 135 }
55497cff 136#endif /* HAS_64K_LIMIT */
7614df0c 137 if (!size) {
f2517201 138 safesysfree(where);
7614df0c
JD		 139 return NULL;
140 }
141
378cc40b 142 if (!where)
f2517201 143 return safesysmalloc(size);
34de22dd
LW		 144#ifdef DEBUGGING
145 if ((long)size < 0)
4f63d024 146 Perl_croak_nocontext("panic: realloc");
34de22dd 147#endif
7614df0c 148 ptr = PerlMem_realloc(where,size);
79072805 149
cd39f2b6
JH		 150#ifdef MACOS_TRADITIONAL
151 MAC_CHECK_GOAT(ptr);
152#endif
153
7b0972df
JH		 154 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05d) rfree\n",PTR2UV(where),PL_an++));
155 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05d) realloc %ld bytes\n",PTR2UV(ptr),PL_an++,(long)size));
79072805 156
8d063cd8
LW		 157 if (ptr != Nullch)
158 return ptr;
3280af22 159 else if (PL_nomemok)
7c0587c8 160 return Nullch;
8d063cd8 161 else {
bf49b057 162 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 163 my_exit(1);
4e35701f 164 return Nullch;
8d063cd8
LW		 165 }
166 /*NOTREACHED*/
167}
168
f2517201 169/* safe version of system's free() */
8d063cd8 170
54310121 171Free_t
4f63d024 172Perl_safesysfree(Malloc_t where)
8d063cd8 173{
54aff467 174 dTHX;
7b0972df 175 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05d) free\n",PTR2UV(where),PL_an++));
378cc40b 176 if (where) {
de3bb511 177 /*SUPPRESS 701*/
6ad3d225 178 PerlMem_free(where);
378cc40b 179 }
8d063cd8
LW		 180}
181
f2517201 182/* safe version of system's calloc() */
1050c9ca 183
bd4080b3 184Malloc_t
4f63d024 185Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 186{
54aff467 187 dTHX;
bd4080b3 188 Malloc_t ptr;
1050c9ca 189
55497cff 190#ifdef HAS_64K_LIMIT
5f05dabc 191 if (size * count > 0xffff) {
bf49b057 192 PerlIO_printf(Perl_error_log,
5f05dabc 193 "Allocation too large: %lx\n", size * count) FLUSH;
54aff467 194 my_exit(1);
5f05dabc 195 }
55497cff 196#endif /* HAS_64K_LIMIT */
1050c9ca 197#ifdef DEBUGGING
198 if ((long)size < 0 || (long)count < 0)
4f63d024 199 Perl_croak_nocontext("panic: calloc");
1050c9ca 200#endif
0b7c1c42 201 size *= count;
6ad3d225 202 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
cd39f2b6
JH		 203#ifdef MACOS_TRADITIONAL
204 MAC_CHECK_GOAT(ptr);
205#endif
7b0972df 206 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05d) calloc %ld x %ld bytes\n",PTR2UV(ptr),PL_an++,(long)count,(long)size));
1050c9ca 207 if (ptr != Nullch) {
208 memset((void*)ptr, 0, size);
209 return ptr;
210 }
3280af22 211 else if (PL_nomemok)
1050c9ca 212 return Nullch;
213 else {
bf49b057 214 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 215 my_exit(1);
4e35701f 216 return Nullch;
1050c9ca 217 }
218 /*NOTREACHED*/
219}
220
a687059c
LW		 221#ifdef LEAKTEST
222
8c52afec
IZ		 223struct mem_test_strut {
224 union {
225 long type;
226 char c[2];
227 } u;
228 long size;
229};
230
231# define ALIGN sizeof(struct mem_test_strut)
232
233# define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
234# define typeof_chunk(ch) \
235 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
236# define set_typeof_chunk(ch,t) \
237 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
238#define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
239 ? MAXYCOUNT - 1 \
240 : ( (size) > 40 \
241 ? ((size) - 1)/8 + 5 \
242 : ((size) - 1)/4))
8d063cd8 243
bd4080b3 244Malloc_t
4f63d024 245Perl_safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 246{
8c52afec 247 register char* where = (char*)safemalloc(size + ALIGN);
8d063cd8 248
8c52afec
IZ		 249 xcount[x] += size;
250 xycount[x][SIZE_TO_Y(size)]++;
251 set_typeof_chunk(where, x);
252 sizeof_chunk(where) = size;
253 return (Malloc_t)(where + ALIGN);
8d063cd8 254}
8d063cd8 255
bd4080b3 256Malloc_t
4f63d024 257Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
a687059c 258{
8c52afec
IZ		 259 char *where = (char*)wh;
260
261 if (!wh)
262 return safexmalloc(0,size);
263
264 {
265 MEM_SIZE old = sizeof_chunk(where - ALIGN);
266 int t = typeof_chunk(where - ALIGN);
267 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
268
269 xycount[t][SIZE_TO_Y(old)]--;
270 xycount[t][SIZE_TO_Y(size)]++;
271 xcount[t] += size - old;
272 sizeof_chunk(new) = size;
273 return (Malloc_t)(new + ALIGN);
274 }
a687059c
LW		 275}
276
277void
4f63d024 278Perl_safexfree(Malloc_t wh)
a687059c 279{
79072805 280 I32 x;
8c52afec
IZ		 281 char *where = (char*)wh;
282 MEM_SIZE size;
283
a687059c
LW		 284 if (!where)
285 return;
286 where -= ALIGN;
8c52afec 287 size = sizeof_chunk(where);
a687059c 288 x = where[0] + 100 * where[1];
8c52afec
IZ		 289 xcount[x] -= size;
290 xycount[x][SIZE_TO_Y(size)]--;
a687059c
LW		 291 safefree(where);
292}
293
bd4080b3 294Malloc_t
4f63d024 295Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 296{
8c52afec
IZ		 297 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
298 xcount[x] += size;
299 xycount[x][SIZE_TO_Y(size)]++;
300 memset((void*)(where + ALIGN), 0, size * count);
301 set_typeof_chunk(where, x);
302 sizeof_chunk(where) = size;
303 return (Malloc_t)(where + ALIGN);
1050c9ca 304}
305
864dbfa3 306STATIC void
cea2e8a9 307S_xstat(pTHX_ int flag)
8d063cd8 308{
8c52afec
IZ		 309 register I32 i, j, total = 0;
310 I32 subtot[MAXYCOUNT];
8d063cd8 311
8c52afec
IZ		 312 for (j = 0; j < MAXYCOUNT; j++) {
313 subtot[j] = 0;
314 }
315
bf49b057 316 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 317 for (i = 0; i < MAXXCOUNT; i++) {
8c52afec
IZ		 318 total += xcount[i];
319 for (j = 0; j < MAXYCOUNT; j++) {
320 subtot[j] += xycount[i][j];
321 }
322 if (flag == 0
323 ? xcount[i] /* Have something */
324 : (flag == 2
325 ? xcount[i] != lastxcount[i] /* Changed */
326 : xcount[i] > lastxcount[i])) { /* Growed */
bf49b057 327 PerlIO_printf(Perl_debug_log,"%2d %02d %7ld ", i / 100, i % 100,
8c52afec 328 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
a687059c 329 lastxcount[i] = xcount[i];
8c52afec
IZ		 330 for (j = 0; j < MAXYCOUNT; j++) {
331 if ( flag == 0
332 ? xycount[i][j] /* Have something */
333 : (flag == 2
334 ? xycount[i][j] != lastxycount[i][j] /* Changed */
335 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
bf49b057 336 PerlIO_printf(Perl_debug_log,"%3ld ",
8c52afec
IZ		 337 flag == 2
338 ? xycount[i][j] - lastxycount[i][j]
339 : xycount[i][j]);
340 lastxycount[i][j] = xycount[i][j];
341 } else {
bf49b057 342 PerlIO_printf(Perl_debug_log, " . ", xycount[i][j]);
8c52afec
IZ		 343 }
344 }
bf49b057 345 PerlIO_printf(Perl_debug_log, "\n");
8c52afec
IZ		 346 }
347 }
348 if (flag != 2) {
bf49b057 349 PerlIO_printf(Perl_debug_log, "Total %7ld ", total);
8c52afec
IZ		 350 for (j = 0; j < MAXYCOUNT; j++) {
351 if (subtot[j]) {
bf49b057 352 PerlIO_printf(Perl_debug_log, "%3ld ", subtot[j]);
8c52afec 353 } else {
bf49b057 354 PerlIO_printf(Perl_debug_log, " . ");
8c52afec 355 }
8d063cd8 356 }
bf49b057 357 PerlIO_printf(Perl_debug_log, "\n");
8d063cd8 358 }
8d063cd8 359}
a687059c
LW		 360
361#endif /* LEAKTEST */
8d063cd8
LW		 362
363/* copy a string up to some (non-backslashed) delimiter, if any */
364
365char *
864dbfa3 366Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 367{
fc36a67e 368 register I32 tolen;
369 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW		 370 if (*from == '\\') {
371 if (from[1] == delim)
372 from++;
fc36a67e 373 else {
374 if (to < toend)
375 *to++ = *from;
376 tolen++;
377 from++;
378 }
378cc40b 379 }
bedebaa5 380 else if (*from == delim)
8d063cd8 381 break;
fc36a67e 382 if (to < toend)
383 *to++ = *from;
8d063cd8 384 }
bedebaa5
CS		 385 if (to < toend)
386 *to = '\0';
fc36a67e 387 *retlen = tolen;
8d063cd8
LW		 388 return from;
389}
390
391/* return ptr to little string in big string, NULL if not found */
378cc40b 392/* This routine was donated by Corey Satten. */
8d063cd8
LW		 393
394char *
864dbfa3 395Perl_instr(pTHX_ register const char *big, register const char *little)
378cc40b 396{
08105a92 397 register const char *s, *x;
79072805 398 register I32 first;
378cc40b 399
a687059c 400 if (!little)
08105a92 401 return (char*)big;
a687059c 402 first = *little++;
378cc40b 403 if (!first)
08105a92 404 return (char*)big;
378cc40b
LW		 405 while (*big) {
406 if (*big++ != first)
407 continue;
408 for (x=big,s=little; *s; /**/ ) {
409 if (!*x)
410 return Nullch;
411 if (*s++ != *x++) {
412 s--;
413 break;
414 }
415 }
416 if (!*s)
08105a92 417 return (char*)(big-1);
378cc40b
LW		 418 }
419 return Nullch;
420}
8d063cd8 421
a687059c
LW		 422/* same as instr but allow embedded nulls */
423
424char *
864dbfa3 425Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
8d063cd8 426{
08105a92 427 register const char *s, *x;
79072805 428 register I32 first = *little;
08105a92 429 register const char *littleend = lend;
378cc40b 430
a0d0e21e 431 if (!first && little >= littleend)
08105a92 432 return (char*)big;
de3bb511
LW		 433 if (bigend - big < littleend - little)
434 return Nullch;
a687059c
LW		 435 bigend -= littleend - little++;
436 while (big <= bigend) {
437 if (*big++ != first)
438 continue;
439 for (x=big,s=little; s < littleend; /**/ ) {
440 if (*s++ != *x++) {
441 s--;
442 break;
443 }
444 }
445 if (s >= littleend)
08105a92 446 return (char*)(big-1);
378cc40b 447 }
a687059c
LW		 448 return Nullch;
449}
450
451/* reverse of the above--find last substring */
452
453char *
864dbfa3 454Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
a687059c 455{
08105a92
GS		 456 register const char *bigbeg;
457 register const char *s, *x;
79072805 458 register I32 first = *little;
08105a92 459 register const char *littleend = lend;
a687059c 460
a0d0e21e 461 if (!first && little >= littleend)
08105a92 462 return (char*)bigend;
a687059c
LW		 463 bigbeg = big;
464 big = bigend - (littleend - little++);
465 while (big >= bigbeg) {
466 if (*big-- != first)
467 continue;
468 for (x=big+2,s=little; s < littleend; /**/ ) {
469 if (*s++ != *x++) {
470 s--;
471 break;
472 }
473 }
474 if (s >= littleend)
08105a92 475 return (char*)(big+1);
378cc40b 476 }
a687059c 477 return Nullch;
378cc40b 478}
a687059c 479
bbce6d69 480/*
481 * Set up for a new ctype locale.
482 */
55497cff 483void
864dbfa3 484Perl_new_ctype(pTHX_ const char *newctype)
ef7eada9 485{
36477c24 486#ifdef USE_LOCALE_CTYPE
487
bbce6d69 488 int i;
ef7eada9 489
bbce6d69 490 for (i = 0; i < 256; i++) {
491 if (isUPPER_LC(i))
22c35a8c 492 PL_fold_locale[i] = toLOWER_LC(i);
bbce6d69 493 else if (isLOWER_LC(i))
22c35a8c 494 PL_fold_locale[i] = toUPPER_LC(i);
bbce6d69 495 else
22c35a8c 496 PL_fold_locale[i] = i;
bbce6d69 497 }
bbce6d69 498
36477c24 499#endif /* USE_LOCALE_CTYPE */
500}
bbce6d69 501
502/*
503 * Set up for a new collation locale.
504 */
505void
864dbfa3 506Perl_new_collate(pTHX_ const char *newcoll)
bbce6d69 507{
36477c24 508#ifdef USE_LOCALE_COLLATE
509
bbce6d69 510 if (! newcoll) {
3280af22
NIS		 511 if (PL_collation_name) {
512 ++PL_collation_ix;
513 Safefree(PL_collation_name);
514 PL_collation_name = NULL;
515 PL_collation_standard = TRUE;
516 PL_collxfrm_base = 0;
517 PL_collxfrm_mult = 2;
bbce6d69 518 }
519 return;
520 }
521
3280af22
NIS		 522 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
523 ++PL_collation_ix;
524 Safefree(PL_collation_name);
525 PL_collation_name = savepv(newcoll);
526 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 527
bbce6d69 528 {
529 /* 2: at most so many chars ('a', 'b'). */
530 /* 50: surely no system expands a char more. */
531#define XFRMBUFSIZE (2 * 50)
532 char xbuf[XFRMBUFSIZE];
533 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
534 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
535 SSize_t mult = fb - fa;
536 if (mult < 1)
cea2e8a9 537 Perl_croak(aTHX_ "strxfrm() gets absurd");
3280af22
NIS		 538 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
539 PL_collxfrm_mult = mult;
bbce6d69 540 }
bbce6d69 541 }
bbce6d69 542
36477c24 543#endif /* USE_LOCALE_COLLATE */
544}
bbce6d69 545
097ee67d 546void
51371543 547Perl_set_numeric_radix(pTHX)
097ee67d
JH		 548{
549#ifdef USE_LOCALE_NUMERIC
550# ifdef HAS_LOCALECONV
551 struct lconv* lc;
552
553 lc = localeconv();
554 if (lc && lc->decimal_point)
555 /* We assume that decimal separator aka the radix
556 * character is always a single character. If it
557 * ever is a string, this needs to be rethunk. */
558 PL_numeric_radix = *lc->decimal_point;
559 else
560 PL_numeric_radix = 0;
561# endif /* HAS_LOCALECONV */
097ee67d
JH		 562#endif /* USE_LOCALE_NUMERIC */
563}
564
bbce6d69 565/*
566 * Set up for a new numeric locale.
567 */
568void
864dbfa3 569Perl_new_numeric(pTHX_ const char *newnum)
bbce6d69 570{
36477c24 571#ifdef USE_LOCALE_NUMERIC
572
bbce6d69 573 if (! newnum) {
3280af22
NIS		 574 if (PL_numeric_name) {
575 Safefree(PL_numeric_name);
576 PL_numeric_name = NULL;
577 PL_numeric_standard = TRUE;
578 PL_numeric_local = TRUE;
bbce6d69 579 }
580 return;
581 }
582
3280af22
NIS		 583 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
584 Safefree(PL_numeric_name);
585 PL_numeric_name = savepv(newnum);
586 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
587 PL_numeric_local = TRUE;
51371543 588 set_numeric_radix();
bbce6d69 589 }
36477c24 590
591#endif /* USE_LOCALE_NUMERIC */
bbce6d69 592}
593
594void
864dbfa3 595Perl_set_numeric_standard(pTHX)
bbce6d69 596{
5f05dabc 597#ifdef USE_LOCALE_NUMERIC
598
3280af22 599 if (! PL_numeric_standard) {
bbce6d69 600 setlocale(LC_NUMERIC, "C");
3280af22
NIS		 601 PL_numeric_standard = TRUE;
602 PL_numeric_local = FALSE;
bbce6d69 603 }
5f05dabc 604
605#endif /* USE_LOCALE_NUMERIC */
bbce6d69 606}
607
608void
864dbfa3 609Perl_set_numeric_local(pTHX)
bbce6d69 610{
5f05dabc 611#ifdef USE_LOCALE_NUMERIC
612
3280af22
NIS		 613 if (! PL_numeric_local) {
614 setlocale(LC_NUMERIC, PL_numeric_name);
615 PL_numeric_standard = FALSE;
616 PL_numeric_local = TRUE;
51371543 617 set_numeric_radix();
bbce6d69 618 }
bbce6d69 619
36477c24 620#endif /* USE_LOCALE_NUMERIC */
5f05dabc 621}
36477c24 622
36477c24 623/*
624 * Initialize locale awareness.
625 */
f0c5b223 626int
864dbfa3 627Perl_init_i18nl10n(pTHX_ int printwarn)
f0c5b223
TB		 628{
629 int ok = 1;
630 /* returns
631 * 1 = set ok or not applicable,
632 * 0 = fallback to C locale,
633 * -1 = fallback to C locale failed
634 */
bbce6d69 635
36477c24 636#ifdef USE_LOCALE
bbce6d69 637
36477c24 638#ifdef USE_LOCALE_CTYPE
bbce6d69 639 char *curctype = NULL;
36477c24 640#endif /* USE_LOCALE_CTYPE */
641#ifdef USE_LOCALE_COLLATE
bbce6d69 642 char *curcoll = NULL;
36477c24 643#endif /* USE_LOCALE_COLLATE */
644#ifdef USE_LOCALE_NUMERIC
bbce6d69 645 char *curnum = NULL;
36477c24 646#endif /* USE_LOCALE_NUMERIC */
3aeabbed
JH		 647#ifdef __GLIBC__
648 char *language = PerlEnv_getenv("LANGUAGE");
649#endif
76e3520e
GS		 650 char *lc_all = PerlEnv_getenv("LC_ALL");
651 char *lang = PerlEnv_getenv("LANG");
bbce6d69 652 bool setlocale_failure = FALSE;
f0c5b223 653
02b32252
CS		 654#ifdef LOCALE_ENVIRON_REQUIRED
655
656 /*
657 * Ultrix setlocale(..., "") fails if there are no environment
658 * variables from which to get a locale name.
659 */
660
661 bool done = FALSE;
662
663#ifdef LC_ALL
664 if (lang) {
665 if (setlocale(LC_ALL, ""))
666 done = TRUE;
667 else
668 setlocale_failure = TRUE;
669 }
0644c9cb 670 if (!setlocale_failure) {
02b32252 671#ifdef USE_LOCALE_CTYPE
0644c9cb
IS		 672 if (! (curctype =
673 setlocale(LC_CTYPE,
674 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
02b32252
CS		 675 ? "" : Nullch)))
676 setlocale_failure = TRUE;
677#endif /* USE_LOCALE_CTYPE */
678#ifdef USE_LOCALE_COLLATE
0644c9cb
IS		 679 if (! (curcoll =
680 setlocale(LC_COLLATE,
681 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
02b32252
CS		 682 ? "" : Nullch)))
683 setlocale_failure = TRUE;
684#endif /* USE_LOCALE_COLLATE */
685#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS		 686 if (! (curnum =
687 setlocale(LC_NUMERIC,
688 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
02b32252
CS		 689 ? "" : Nullch)))
690 setlocale_failure = TRUE;
691#endif /* USE_LOCALE_NUMERIC */
692 }
693
0644c9cb 694#endif /* LC_ALL */
02b32252 695
0644c9cb 696#endif /* !LOCALE_ENVIRON_REQUIRED */
5f05dabc 697
0644c9cb 698#ifdef LC_ALL
bbce6d69 699 if (! setlocale(LC_ALL, ""))
700 setlocale_failure = TRUE;
0644c9cb 701#endif /* LC_ALL */
bbce6d69 702
0644c9cb 703 if (!setlocale_failure) {
36477c24 704#ifdef USE_LOCALE_CTYPE
0644c9cb
IS		 705 if (! (curctype = setlocale(LC_CTYPE, "")))
706 setlocale_failure = TRUE;
36477c24 707#endif /* USE_LOCALE_CTYPE */
708#ifdef USE_LOCALE_COLLATE
0644c9cb
IS		 709 if (! (curcoll = setlocale(LC_COLLATE, "")))
710 setlocale_failure = TRUE;
36477c24 711#endif /* USE_LOCALE_COLLATE */
712#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS		 713 if (! (curnum = setlocale(LC_NUMERIC, "")))
714 setlocale_failure = TRUE;
36477c24 715#endif /* USE_LOCALE_NUMERIC */
0644c9cb 716 }
02b32252 717
5f05dabc 718 if (setlocale_failure) {
719 char *p;
720 bool locwarn = (printwarn > 1 ||
721 printwarn &&
76e3520e 722 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)));
20cec16a 723
5f05dabc 724 if (locwarn) {
725#ifdef LC_ALL
726
bf49b057 727 PerlIO_printf(Perl_error_log,
5f05dabc 728 "perl: warning: Setting locale failed.\n");
729
730#else /* !LC_ALL */
731
bf49b057 732 PerlIO_printf(Perl_error_log,
bbce6d69 733 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 734#ifdef USE_LOCALE_CTYPE
bbce6d69 735 if (! curctype)
bf49b057 736 PerlIO_printf(Perl_error_log, "LC_CTYPE ");
36477c24 737#endif /* USE_LOCALE_CTYPE */
738#ifdef USE_LOCALE_COLLATE
bbce6d69 739 if (! curcoll)
bf49b057 740 PerlIO_printf(Perl_error_log, "LC_COLLATE ");
36477c24 741#endif /* USE_LOCALE_COLLATE */
742#ifdef USE_LOCALE_NUMERIC
bbce6d69 743 if (! curnum)
bf49b057 744 PerlIO_printf(Perl_error_log, "LC_NUMERIC ");
36477c24 745#endif /* USE_LOCALE_NUMERIC */
bf49b057 746 PerlIO_printf(Perl_error_log, "\n");
bbce6d69 747
5f05dabc 748#endif /* LC_ALL */
749
bf49b057 750 PerlIO_printf(Perl_error_log,
bbce6d69 751 "perl: warning: Please check that your locale settings:\n");
ef7eada9 752
3aeabbed 753#ifdef __GLIBC__
bf49b057 754 PerlIO_printf(Perl_error_log,
3aeabbed
JH		 755 "\tLANGUAGE = %c%s%c,\n",
756 language ? '"' : '(',
757 language ? language : "unset",
758 language ? '"' : ')');
759#endif
760
bf49b057 761 PerlIO_printf(Perl_error_log,
bbce6d69 762 "\tLC_ALL = %c%s%c,\n",
763 lc_all ? '"' : '(',
764 lc_all ? lc_all : "unset",
765 lc_all ? '"' : ')');
5f05dabc 766
767 {
768 char **e;
769 for (e = environ; *e; e++) {
770 if (strnEQ(*e, "LC_", 3)
771 && strnNE(*e, "LC_ALL=", 7)
772 && (p = strchr(*e, '=')))
bf49b057 773 PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n",
fb73857a 774 (int)(p - *e), *e, p + 1);
5f05dabc 775 }
776 }
777
bf49b057 778 PerlIO_printf(Perl_error_log,
bbce6d69 779 "\tLANG = %c%s%c\n",
5f05dabc 780 lang ? '"' : '(',
bbce6d69 781 lang ? lang : "unset",
782 lang ? '"' : ')');
ef7eada9 783
bf49b057 784 PerlIO_printf(Perl_error_log,
bbce6d69 785 " are supported and installed on your system.\n");
5f05dabc 786 }
ef7eada9 787
5f05dabc 788#ifdef LC_ALL
789
790 if (setlocale(LC_ALL, "C")) {
791 if (locwarn)
bf49b057 792 PerlIO_printf(Perl_error_log,
5f05dabc 793 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 794 ok = 0;
ef7eada9 795 }
5f05dabc 796 else {
797 if (locwarn)
bf49b057 798 PerlIO_printf(Perl_error_log,
5f05dabc 799 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
800 ok = -1;
801 }
bbce6d69 802
5f05dabc 803#else /* ! LC_ALL */
804
805 if (0
36477c24 806#ifdef USE_LOCALE_CTYPE
5f05dabc 807 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24 808#endif /* USE_LOCALE_CTYPE */
809#ifdef USE_LOCALE_COLLATE
5f05dabc 810 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24 811#endif /* USE_LOCALE_COLLATE */
812#ifdef USE_LOCALE_NUMERIC
5f05dabc 813 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 814#endif /* USE_LOCALE_NUMERIC */
5f05dabc 815 )
816 {
817 if (locwarn)
bf49b057 818 PerlIO_printf(Perl_error_log,
5f05dabc 819 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
820 ok = -1;
bbce6d69 821 }
5f05dabc 822
bbce6d69 823#endif /* ! LC_ALL */
5f05dabc 824
825#ifdef USE_LOCALE_CTYPE
826 curctype = setlocale(LC_CTYPE, Nullch);
827#endif /* USE_LOCALE_CTYPE */
828#ifdef USE_LOCALE_COLLATE
829 curcoll = setlocale(LC_COLLATE, Nullch);
830#endif /* USE_LOCALE_COLLATE */
831#ifdef USE_LOCALE_NUMERIC
832 curnum = setlocale(LC_NUMERIC, Nullch);
833#endif /* USE_LOCALE_NUMERIC */
ef7eada9
JH		 834 }
835
36477c24 836#ifdef USE_LOCALE_CTYPE
864dbfa3 837 new_ctype(curctype);
36477c24 838#endif /* USE_LOCALE_CTYPE */
bbce6d69 839
36477c24 840#ifdef USE_LOCALE_COLLATE
864dbfa3 841 new_collate(curcoll);
36477c24 842#endif /* USE_LOCALE_COLLATE */
bbce6d69 843
36477c24 844#ifdef USE_LOCALE_NUMERIC
864dbfa3 845 new_numeric(curnum);
36477c24 846#endif /* USE_LOCALE_NUMERIC */
ef7eada9 847
36477c24 848#endif /* USE_LOCALE */
ef7eada9 849
f0c5b223
TB		 850 return ok;
851}
852
bbce6d69 853/* Backwards compatibility. */
854int
864dbfa3 855Perl_init_i18nl14n(pTHX_ int printwarn)
bbce6d69 856{
864dbfa3 857 return init_i18nl10n(printwarn);
bbce6d69 858}
ef7eada9 859
36477c24 860#ifdef USE_LOCALE_COLLATE
ef7eada9 861
bbce6d69 862/*
863 * mem_collxfrm() is a bit like strxfrm() but with two important
864 * differences. First, it handles embedded NULs. Second, it allocates
865 * a bit more memory than needed for the transformed data itself.
866 * The real transformed data begins at offset sizeof(collationix).
867 * Please see sv_collxfrm() to see how this is used.
868 */
869char *
864dbfa3 870Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
bbce6d69 871{
872 char *xbuf;
76e3520e 873 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69 874
875 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
876 /* the +1 is for the terminating NUL. */
877
3280af22 878 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
76e3520e 879 New(171, xbuf, xAlloc, char);
bbce6d69 880 if (! xbuf)
881 goto bad;
882
3280af22
NIS		 883 *(U32*)xbuf = PL_collation_ix;
884 xout = sizeof(PL_collation_ix);
bbce6d69 885 for (xin = 0; xin < len; ) {
886 SSize_t xused;
887
888 for (;;) {
76e3520e 889 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69 890 if (xused == -1)
891 goto bad;
76e3520e 892 if (xused < xAlloc - xout)
bbce6d69 893 break;
76e3520e
GS		 894 xAlloc = (2 * xAlloc) + 1;
895 Renew(xbuf, xAlloc, char);
bbce6d69 896 if (! xbuf)
897 goto bad;
898 }
ef7eada9 899
bbce6d69 900 xin += strlen(s + xin) + 1;
901 xout += xused;
902
903 /* Embedded NULs are understood but silently skipped
904 * because they make no sense in locale collation. */
905 }
ef7eada9 906
bbce6d69 907 xbuf[xout] = '\0';
3280af22 908 *xlen = xout - sizeof(PL_collation_ix);
bbce6d69 909 return xbuf;
910
911 bad:
912 Safefree(xbuf);
913 *xlen = 0;
914 return NULL;
ef7eada9
JH		 915}
916
36477c24 917#endif /* USE_LOCALE_COLLATE */
bbce6d69 918
cf93c79d
IZ		 919#define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
920
921/* As a space optimization, we do not compile tables for strings of length
922 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
923 special-cased in fbm_instr().
924
925 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
926
378cc40b 927void
7506f9c3 928Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
378cc40b 929{
942e002e
GS		 930 register U8 *s;
931 register U8 *table;
79072805 932 register U32 i;
0b71040e 933 STRLEN len;
79072805
LW		 934 I32 rarest = 0;
935 U32 frequency = 256;
936
cf93c79d
IZ		 937 if (flags & FBMcf_TAIL)
938 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
942e002e 939 s = (U8*)SvPV_force(sv, len);
07f14f54 940 (void)SvUPGRADE(sv, SVt_PVBM);
cf93c79d
IZ		 941 if (len == 0) /* TAIL might be on on a zero-length string. */
942 return;
02128f11 943 if (len > 2) {
7506f9c3 944 U8 mlen;
cf93c79d
IZ		 945 unsigned char *sb;
946
7506f9c3 947 if (len > 255)
cf93c79d 948 mlen = 255;
7506f9c3
GS		 949 else
950 mlen = (U8)len;
951 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
cf93c79d 952 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
7506f9c3
GS		 953 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
954 memset((void*)table, mlen, 256);
955 table[-1] = (U8)flags;
02128f11 956 i = 0;
7506f9c3 957 sb = s - mlen + 1; /* first char (maybe) */
cf93c79d
IZ		 958 while (s >= sb) {
959 if (table[*s] == mlen)
7506f9c3 960 table[*s] = (U8)i;
cf93c79d
IZ		 961 s--, i++;
962 }
378cc40b 963 }
bbce6d69 964 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 965 SvVALID_on(sv);
378cc40b 966
463ee0b2 967 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69 968 for (i = 0; i < len; i++) {
22c35a8c 969 if (PL_freq[s[i]] < frequency) {
bbce6d69 970 rarest = i;
22c35a8c 971 frequency = PL_freq[s[i]];
378cc40b
LW		 972 }
973 }
79072805
LW		 974 BmRARE(sv) = s[rarest];
975 BmPREVIOUS(sv) = rarest;
cf93c79d
IZ		 976 BmUSEFUL(sv) = 100; /* Initial value */
977 if (flags & FBMcf_TAIL)
978 SvTAIL_on(sv);
7506f9c3
GS		 979 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
980 BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW		 981}
982
cf93c79d
IZ		 983/* If SvTAIL(littlestr), it has a fake '\n' at end. */
984/* If SvTAIL is actually due to \Z or \z, this gives false positives
985 if multiline */
986
378cc40b 987char *
864dbfa3 988Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
378cc40b 989{
a687059c 990 register unsigned char *s;
cf93c79d
IZ		 991 STRLEN l;
992 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
993 register STRLEN littlelen = l;
994 register I32 multiline = flags & FBMrf_MULTILINE;
995
996 if (bigend - big < littlelen) {
997 check_tail:
998 if ( SvTAIL(littlestr)
999 && (bigend - big == littlelen - 1)
1000 && (littlelen == 1
1001 || *big == *little && memEQ(big, little, littlelen - 1)))
1002 return (char*)big;
1003 return Nullch;
1004 }
378cc40b 1005
cf93c79d
IZ		 1006 if (littlelen <= 2) { /* Special-cased */
1007 register char c;
1008
1009 if (littlelen == 1) {
1010 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
1011 /* Know that bigend != big. */
1012 if (bigend[-1] == '\n')
1013 return (char *)(bigend - 1);
1014 return (char *) bigend;
1015 }
1016 s = big;
1017 while (s < bigend) {
1018 if (*s == *little)
1019 return (char *)s;
1020 s++;
1021 }
1022 if (SvTAIL(littlestr))
1023 return (char *) bigend;
1024 return Nullch;
1025 }
1026 if (!littlelen)
1027 return (char*)big; /* Cannot be SvTAIL! */
1028
1029 /* littlelen is 2 */
1030 if (SvTAIL(littlestr) && !multiline) {
1031 if (bigend[-1] == '\n' && bigend[-2] == *little)
1032 return (char*)bigend - 2;
1033 if (bigend[-1] == *little)
1034 return (char*)bigend - 1;
1035 return Nullch;
1036 }
1037 {
1038 /* This should be better than FBM if c1 == c2, and almost
1039 as good otherwise: maybe better since we do less indirection.
1040 And we save a lot of memory by caching no table. */
1041 register unsigned char c1 = little[0];
1042 register unsigned char c2 = little[1];
1043
1044 s = big + 1;
1045 bigend--;
1046 if (c1 != c2) {
1047 while (s <= bigend) {
1048 if (s[0] == c2) {
1049 if (s[-1] == c1)
1050 return (char*)s - 1;
1051 s += 2;
1052 continue;
3fe6f2dc 1053 }
cf93c79d
IZ		 1054 next_chars:
1055 if (s[0] == c1) {
1056 if (s == bigend)
1057 goto check_1char_anchor;
1058 if (s[1] == c2)
1059 return (char*)s;
1060 else {
1061 s++;
1062 goto next_chars;
1063 }
1064 }
1065 else
1066 s += 2;
1067 }
1068 goto check_1char_anchor;
1069 }
1070 /* Now c1 == c2 */
1071 while (s <= bigend) {
1072 if (s[0] == c1) {
1073 if (s[-1] == c1)
1074 return (char*)s - 1;
1075 if (s == bigend)
1076 goto check_1char_anchor;
1077 if (s[1] == c1)
1078 return (char*)s;
1079 s += 3;
02128f11 1080 }
c277df42 1081 else
cf93c79d 1082 s += 2;
c277df42 1083 }
c277df42 1084 }
cf93c79d
IZ		 1085 check_1char_anchor: /* One char and anchor! */
1086 if (SvTAIL(littlestr) && (*bigend == *little))
1087 return (char *)bigend; /* bigend is already decremented. */
1088 return Nullch;
d48672a2 1089 }
cf93c79d 1090 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
bbce6d69 1091 s = bigend - littlelen;
7506f9c3 1092 if (s >= big && bigend[-1] == '\n' && *s == *little
cf93c79d
IZ		 1093 /* Automatically of length > 2 */
1094 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
7506f9c3 1095 {
bbce6d69 1096 return (char*)s; /* how sweet it is */
7506f9c3
GS		 1097 }
1098 if (s[1] == *little
1099 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1100 {
cf93c79d 1101 return (char*)s + 1; /* how sweet it is */
7506f9c3 1102 }
02128f11
IZ		 1103 return Nullch;
1104 }
cf93c79d
IZ		 1105 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1106 char *b = ninstr((char*)big,(char*)bigend,
1107 (char*)little, (char*)little + littlelen);
1108
1109 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1110 /* Chop \n from littlestr: */
1111 s = bigend - littlelen + 1;
7506f9c3
GS		 1112 if (*s == *little
1113 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1114 {
3fe6f2dc 1115 return (char*)s;
7506f9c3 1116 }
cf93c79d 1117 return Nullch;
a687059c 1118 }
cf93c79d 1119 return b;
a687059c 1120 }
cf93c79d
IZ		 1121
1122 { /* Do actual FBM. */
1123 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1124 register unsigned char *oldlittle;
1125
1126 if (littlelen > bigend - big)
1127 return Nullch;
1128 --littlelen; /* Last char found by table lookup */
1129
1130 s = big + littlelen;
1131 little += littlelen; /* last char */
1132 oldlittle = little;
1133 if (s < bigend) {
1134 register I32 tmp;
1135
1136 top2:
1137 /*SUPPRESS 560*/
7506f9c3 1138 if ((tmp = table[*s])) {
62b28dd9 1139#ifdef POINTERRIGOR
cf93c79d
IZ		 1140 if (bigend - s > tmp) {
1141 s += tmp;
1142 goto top2;
1143 }
bbce6d69 1144 s += tmp;
62b28dd9 1145#else
cf93c79d 1146 if ((s += tmp) < bigend)
62b28dd9 1147 goto top2;
cf93c79d
IZ		 1148#endif
1149 goto check_end;
1150 }
1151 else { /* less expensive than calling strncmp() */
1152 register unsigned char *olds = s;
1153
1154 tmp = littlelen;
1155
1156 while (tmp--) {
1157 if (*--s == *--little)
1158 continue;
1159 differ:
1160 s = olds + 1; /* here we pay the price for failure */
1161 little = oldlittle;
1162 if (s < bigend) /* fake up continue to outer loop */
1163 goto top2;
1164 goto check_end;
1165 }
1166 return (char *)s;
a687059c 1167 }
378cc40b 1168 }
cf93c79d
IZ		 1169 check_end:
1170 if ( s == bigend && (table[-1] & FBMcf_TAIL)
1171 && memEQ(bigend - littlelen, oldlittle - littlelen, littlelen) )
1172 return (char*)bigend - littlelen;
1173 return Nullch;
378cc40b 1174 }
378cc40b
LW		 1175}
1176
c277df42
IZ		 1177/* start_shift, end_shift are positive quantities which give offsets
1178 of ends of some substring of bigstr.
1179 If `last' we want the last occurence.
1180 old_posp is the way of communication between consequent calls if
1181 the next call needs to find the .
1182 The initial *old_posp should be -1.
cf93c79d
IZ		 1183
1184 Note that we take into account SvTAIL, so one can get extra
1185 optimizations if _ALL flag is set.
c277df42
IZ		 1186 */
1187
cf93c79d
IZ		 1188/* If SvTAIL is actually due to \Z or \z, this gives false positives
1189 if PL_multiline. In fact if !PL_multiline the autoritative answer
1190 is not supported yet. */
1191
378cc40b 1192char *
864dbfa3 1193Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1194{
5c0ca799 1195 dTHR;
a687059c
LW		 1196 register unsigned char *s, *x;
1197 register unsigned char *big;
79072805
LW		 1198 register I32 pos;
1199 register I32 previous;
1200 register I32 first;
a687059c 1201 register unsigned char *little;
c277df42 1202 register I32 stop_pos;
a687059c 1203 register unsigned char *littleend;
c277df42 1204 I32 found = 0;
378cc40b 1205
c277df42 1206 if (*old_posp == -1
3280af22 1207 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
cf93c79d
IZ		 1208 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1209 cant_find:
1210 if ( BmRARE(littlestr) == '\n'
1211 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1212 little = (unsigned char *)(SvPVX(littlestr));
1213 littleend = little + SvCUR(littlestr);
1214 first = *little++;
1215 goto check_tail;
1216 }
378cc40b 1217 return Nullch;
cf93c79d
IZ		 1218 }
1219
463ee0b2 1220 little = (unsigned char *)(SvPVX(littlestr));
79072805 1221 littleend = little + SvCUR(littlestr);
378cc40b 1222 first = *little++;
c277df42 1223 /* The value of pos we can start at: */
79072805 1224 previous = BmPREVIOUS(littlestr);
463ee0b2 1225 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ		 1226 /* The value of pos we can stop at: */
1227 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
cf93c79d
IZ		 1228 if (previous + start_shift > stop_pos) {
1229 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1230 goto check_tail;
1231 return Nullch;
1232 }
c277df42 1233 while (pos < previous + start_shift) {
3280af22 1234 if (!(pos += PL_screamnext[pos]))
cf93c79d 1235 goto cant_find;
378cc40b 1236 }
de3bb511 1237#ifdef POINTERRIGOR
bbce6d69 1238 do {
ef64f398 1239 if (pos >= stop_pos) break;
bbce6d69 1240 if (big[pos-previous] != first)
1241 continue;
1242 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69 1243 if (*s++ != *x++) {
1244 s--;
1245 break;
de3bb511 1246 }
bbce6d69 1247 }
c277df42
IZ		 1248 if (s == littleend) {
1249 *old_posp = pos;
1250 if (!last) return (char *)(big+pos-previous);
1251 found = 1;
1252 }
6b88bc9c 1253 } while ( pos += PL_screamnext[pos] );
c277df42 1254 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW		 1255#else /* !POINTERRIGOR */
1256 big -= previous;
bbce6d69 1257 do {
ef64f398 1258 if (pos >= stop_pos) break;
bbce6d69 1259 if (big[pos] != first)
1260 continue;
1261 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69 1262 if (*s++ != *x++) {
1263 s--;
1264 break;
378cc40b 1265 }
bbce6d69 1266 }
c277df42
IZ		 1267 if (s == littleend) {
1268 *old_posp = pos;
1269 if (!last) return (char *)(big+pos);
1270 found = 1;
1271 }
3280af22 1272 } while ( pos += PL_screamnext[pos] );
cf93c79d
IZ		 1273 if (last && found)
1274 return (char *)(big+(*old_posp));
de3bb511 1275#endif /* POINTERRIGOR */
cf93c79d
IZ		 1276 check_tail:
1277 if (!SvTAIL(littlestr) || (end_shift > 0))
1278 return Nullch;
1279 /* Ignore the trailing "\n". This code is not microoptimized */
1280 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1281 stop_pos = littleend - little; /* Actual littlestr len */
1282 if (stop_pos == 0)
1283 return (char*)big;
1284 big -= stop_pos;
1285 if (*big == first
1286 && ((stop_pos == 1) || memEQ(big + 1, little, stop_pos - 1)))
1287 return (char*)big;
1288 return Nullch;
8d063cd8
LW		 1289}
1290
79072805 1291I32
864dbfa3 1292Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
79072805 1293{
bbce6d69 1294 register U8 *a = (U8 *)s1;
1295 register U8 *b = (U8 *)s2;
79072805 1296 while (len--) {
22c35a8c 1297 if (*a != *b && *a != PL_fold[*b])
bbce6d69 1298 return 1;
1299 a++,b++;
1300 }
1301 return 0;
1302}
1303
1304I32
864dbfa3 1305Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
bbce6d69 1306{
1307 register U8 *a = (U8 *)s1;
1308 register U8 *b = (U8 *)s2;
1309 while (len--) {
22c35a8c 1310 if (*a != *b && *a != PL_fold_locale[*b])
bbce6d69 1311 return 1;
1312 a++,b++;
79072805
LW		 1313 }
1314 return 0;
1315}
1316
8d063cd8
LW		 1317/* copy a string to a safe spot */
1318
1319char *
864dbfa3 1320Perl_savepv(pTHX_ const char *sv)
8d063cd8 1321{
a687059c 1322 register char *newaddr;
8d063cd8 1323
79072805
LW		 1324 New(902,newaddr,strlen(sv)+1,char);
1325 (void)strcpy(newaddr,sv);
8d063cd8
LW		 1326 return newaddr;
1327}
1328
a687059c
LW		 1329/* same thing but with a known length */
1330
1331char *
864dbfa3 1332Perl_savepvn(pTHX_ const char *sv, register I32 len)
a687059c
LW		 1333{
1334 register char *newaddr;
1335
1336 New(903,newaddr,len+1,char);
79072805 1337 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW		 1338 newaddr[len] = '\0'; /* is now */
1339 return newaddr;
1340}
1341
cea2e8a9 1342/* the SV for Perl_form() and mess() is not kept in an arena */
fc36a67e 1343
76e3520e 1344STATIC SV *
cea2e8a9 1345S_mess_alloc(pTHX)
fc36a67e 1346{
e72dc28c 1347 dTHR;
fc36a67e 1348 SV *sv;
1349 XPVMG *any;
1350
e72dc28c
GS		 1351 if (!PL_dirty)
1352 return sv_2mortal(newSVpvn("",0));
1353
0372dbb6
GS		 1354 if (PL_mess_sv)
1355 return PL_mess_sv;
1356
fc36a67e 1357 /* Create as PVMG now, to avoid any upgrading later */
1358 New(905, sv, 1, SV);
1359 Newz(905, any, 1, XPVMG);
1360 SvFLAGS(sv) = SVt_PVMG;
1361 SvANY(sv) = (void*)any;
1362 SvREFCNT(sv) = 1 << 30; /* practically infinite */
e72dc28c 1363 PL_mess_sv = sv;
fc36a67e 1364 return sv;
1365}
1366
c5be433b 1367#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1368char *
1369Perl_form_nocontext(const char* pat, ...)
1370{
1371 dTHX;
c5be433b 1372 char *retval;
cea2e8a9
GS		 1373 va_list args;
1374 va_start(args, pat);
c5be433b 1375 retval = vform(pat, &args);
cea2e8a9 1376 va_end(args);
c5be433b 1377 return retval;
cea2e8a9 1378}
c5be433b 1379#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9 1380
8990e307 1381char *
864dbfa3 1382Perl_form(pTHX_ const char* pat, ...)
8990e307 1383{
c5be433b 1384 char *retval;
46fc3d4c 1385 va_list args;
46fc3d4c 1386 va_start(args, pat);
c5be433b 1387 retval = vform(pat, &args);
46fc3d4c 1388 va_end(args);
c5be433b
GS		 1389 return retval;
1390}
1391
1392char *
1393Perl_vform(pTHX_ const char *pat, va_list *args)
1394{
1395 SV *sv = mess_alloc();
1396 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
e72dc28c 1397 return SvPVX(sv);
46fc3d4c 1398}
a687059c 1399
5a844595
GS		 1400#if defined(PERL_IMPLICIT_CONTEXT)
1401SV *
1402Perl_mess_nocontext(const char *pat, ...)
1403{
1404 dTHX;
1405 SV *retval;
1406 va_list args;
1407 va_start(args, pat);
1408 retval = vmess(pat, &args);
1409 va_end(args);
1410 return retval;
1411}
1412#endif /* PERL_IMPLICIT_CONTEXT */
1413
06bf62c7 1414SV *
5a844595
GS		 1415Perl_mess(pTHX_ const char *pat, ...)
1416{
1417 SV *retval;
1418 va_list args;
1419 va_start(args, pat);
1420 retval = vmess(pat, &args);
1421 va_end(args);
1422 return retval;
1423}
1424
1425SV *
1426Perl_vmess(pTHX_ const char *pat, va_list *args)
46fc3d4c 1427{
e72dc28c 1428 SV *sv = mess_alloc();
46fc3d4c 1429 static char dgd[] = " during global destruction.\n";
1430
cd39f2b6
JH		 1431#ifdef MACOS_TRADITIONAL
1432 sv_setpv(sv, "# ");
1433 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
1434 if (SvPVX(sv)[2] == '#')
1435 sv_insert(sv, 0, 2, "", 0);
1436#else
fc36a67e 1437 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
cd39f2b6 1438#endif
46fc3d4c 1439 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1440 dTHR;
b9c39e73 1441 if (PL_curcop->cop_line)
57def98f 1442 Perl_sv_catpvf(aTHX_ sv, " at %_ line %"IVdf,
cf2093f6 1443 GvSV(PL_curcop->cop_filegv), (IV)PL_curcop->cop_line);
515f54a1
GS		 1444 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1445 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1446 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
57def98f 1447 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
cf2093f6
JH		 1448 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1449 line_mode ? "line" : "chunk",
1450 (IV)IoLINES(GvIOp(PL_last_in_gv)));
a687059c 1451 }
9efbc0eb 1452#ifdef USE_THREADS
e8e6f333
GS		 1453 if (thr->tid)
1454 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
9efbc0eb 1455#endif
515f54a1 1456 sv_catpv(sv, PL_dirty ? dgd : ".\n");
cd39f2b6
JH		 1457#ifdef MACOS_TRADITIONAL
1458 if (PL_curcop->cop_line) {
1459 MPWPosIndication(sv, SvPVX(GvSV(PL_curcop->cop_filegv)), PL_curcop->cop_line);
1460 sv_catpv(sv, "\n");
1461 }
1462#endif
a687059c 1463 }
06bf62c7 1464 return sv;
a687059c
LW		 1465}
1466
c5be433b
GS		 1467OP *
1468Perl_vdie(pTHX_ const char* pat, va_list *args)
36477c24 1469{
5dc0d613 1470 dTHR;
36477c24 1471 char *message;
3280af22 1472 int was_in_eval = PL_in_eval;
36477c24 1473 HV *stash;
1474 GV *gv;
1475 CV *cv;
06bf62c7
GS		 1476 SV *msv;
1477 STRLEN msglen;
36477c24 1478
bf49b057 1479 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1480 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1481 thr, PL_curstack, PL_mainstack));
36477c24 1482
06bf62c7 1483 if (pat) {
5a844595
GS		 1484 msv = vmess(pat, args);
1485 if (PL_errors && SvCUR(PL_errors)) {
1486 sv_catsv(PL_errors, msv);
1487 message = SvPV(PL_errors, msglen);
1488 SvCUR_set(PL_errors, 0);
1489 }
1490 else
1491 message = SvPV(msv,msglen);
06bf62c7
GS		 1492 }
1493 else {
1494 message = Nullch;
1495 }
36477c24 1496
bf49b057 1497 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1498 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1499 thr, message, PL_diehook));
3280af22 1500 if (PL_diehook) {
cea2e8a9 1501 /* sv_2cv might call Perl_croak() */
3280af22 1502 SV *olddiehook = PL_diehook;
1738f5c4 1503 ENTER;
3280af22
NIS		 1504 SAVESPTR(PL_diehook);
1505 PL_diehook = Nullsv;
1738f5c4
CS		 1506 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1507 LEAVE;
1508 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1509 dSP;
774d564b 1510 SV *msg;
1511
1512 ENTER;
79cb57f6 1513 if (message) {
06bf62c7 1514 msg = newSVpvn(message, msglen);
4e6ea2c3
GS		 1515 SvREADONLY_on(msg);
1516 SAVEFREESV(msg);
1517 }
1518 else {
1519 msg = ERRSV;
1520 }
1738f5c4 1521
e788e7d3 1522 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1523 PUSHMARK(SP);
1738f5c4
CS		 1524 XPUSHs(msg);
1525 PUTBACK;
0cdb2077 1526 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1527 POPSTACK;
774d564b 1528 LEAVE;
1738f5c4 1529 }
36477c24 1530 }
1531
06bf62c7 1532 PL_restartop = die_where(message, msglen);
bf49b057 1533 DEBUG_S(PerlIO_printf(Perl_debug_log,
7c06b590 1534 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1535 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1536 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1537 JMPENV_JUMP(3);
3280af22 1538 return PL_restartop;
36477c24 1539}
1540
c5be433b 1541#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1542OP *
1543Perl_die_nocontext(const char* pat, ...)
a687059c 1544{
cea2e8a9
GS		 1545 dTHX;
1546 OP *o;
a687059c 1547 va_list args;
cea2e8a9 1548 va_start(args, pat);
c5be433b 1549 o = vdie(pat, &args);
cea2e8a9
GS		 1550 va_end(args);
1551 return o;
1552}
c5be433b 1553#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9
GS		 1554
1555OP *
1556Perl_die(pTHX_ const char* pat, ...)
1557{
1558 OP *o;
1559 va_list args;
1560 va_start(args, pat);
c5be433b 1561 o = vdie(pat, &args);
cea2e8a9
GS		 1562 va_end(args);
1563 return o;
1564}
1565
c5be433b
GS		 1566void
1567Perl_vcroak(pTHX_ const char* pat, va_list *args)
cea2e8a9
GS		 1568{
1569 dTHR;
de3bb511 1570 char *message;
748a9306
LW		 1571 HV *stash;
1572 GV *gv;
1573 CV *cv;
06bf62c7
GS		 1574 SV *msv;
1575 STRLEN msglen;
a687059c 1576
5a844595
GS		 1577 msv = vmess(pat, args);
1578 if (PL_errors && SvCUR(PL_errors)) {
1579 sv_catsv(PL_errors, msv);
1580 message = SvPV(PL_errors, msglen);
1581 SvCUR_set(PL_errors, 0);
1582 }
1583 else
1584 message = SvPV(msv,msglen);
1585
b900a521
JH		 1586 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1587 PTR2UV(thr), message));
5a844595 1588
3280af22 1589 if (PL_diehook) {
cea2e8a9 1590 /* sv_2cv might call Perl_croak() */
3280af22 1591 SV *olddiehook = PL_diehook;
1738f5c4 1592 ENTER;
3280af22
NIS		 1593 SAVESPTR(PL_diehook);
1594 PL_diehook = Nullsv;
20cec16a 1595 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS		 1596 LEAVE;
1597 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1598 dSP;
774d564b 1599 SV *msg;
1600
1601 ENTER;
06bf62c7 1602 msg = newSVpvn(message, msglen);
774d564b 1603 SvREADONLY_on(msg);
1604 SAVEFREESV(msg);
20cec16a 1605
e788e7d3 1606 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1607 PUSHMARK(SP);
1738f5c4 1608 XPUSHs(msg);
20cec16a 1609 PUTBACK;
864dbfa3 1610 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1611 POPSTACK;
774d564b 1612 LEAVE;
20cec16a 1613 }
748a9306 1614 }
3280af22 1615 if (PL_in_eval) {
06bf62c7 1616 PL_restartop = die_where(message, msglen);
6224f72b 1617 JMPENV_JUMP(3);
a0d0e21e 1618 }
d175a3f0
GS		 1619 {
1620#ifdef USE_SFIO
1621 /* SFIO can really mess with your errno */
1622 int e = errno;
1623#endif
bf49b057
GS		 1624 PerlIO *serr = Perl_error_log;
1625
1626 PerlIO_write(serr, message, msglen);
1627 (void)PerlIO_flush(serr);
d175a3f0
GS		 1628#ifdef USE_SFIO
1629 errno = e;
1630#endif
1631 }
cd39f2b6
JH		 1632#ifdef MACOS_TRADITIONAL
1633 MacPosCommit();
1634#endif
f86702cc 1635 my_failure_exit();
a687059c
LW		 1636}
1637
c5be433b 1638#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1639void
cea2e8a9 1640Perl_croak_nocontext(const char *pat, ...)
a687059c 1641{
cea2e8a9 1642 dTHX;
a687059c 1643 va_list args;
cea2e8a9 1644 va_start(args, pat);
c5be433b 1645 vcroak(pat, &args);
cea2e8a9
GS		 1646 /* NOTREACHED */
1647 va_end(args);
1648}
1649#endif /* PERL_IMPLICIT_CONTEXT */
1650
1651void
1652Perl_croak(pTHX_ const char *pat, ...)
1653{
1654 va_list args;
1655 va_start(args, pat);
c5be433b 1656 vcroak(pat, &args);
cea2e8a9
GS		 1657 /* NOTREACHED */
1658 va_end(args);
1659}
1660
c5be433b
GS		 1661void
1662Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1663{
de3bb511 1664 char *message;
748a9306
LW		 1665 HV *stash;
1666 GV *gv;
1667 CV *cv;
06bf62c7
GS		 1668 SV *msv;
1669 STRLEN msglen;
a687059c 1670
5a844595 1671 msv = vmess(pat, args);
06bf62c7 1672 message = SvPV(msv, msglen);
a687059c 1673
3280af22 1674 if (PL_warnhook) {
cea2e8a9 1675 /* sv_2cv might call Perl_warn() */
11343788 1676 dTHR;
3280af22 1677 SV *oldwarnhook = PL_warnhook;
1738f5c4 1678 ENTER;
3280af22
NIS		 1679 SAVESPTR(PL_warnhook);
1680 PL_warnhook = Nullsv;
20cec16a 1681 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS		 1682 LEAVE;
1683 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1684 dSP;
774d564b 1685 SV *msg;
1686
1687 ENTER;
06bf62c7 1688 msg = newSVpvn(message, msglen);
774d564b 1689 SvREADONLY_on(msg);
1690 SAVEFREESV(msg);
1691
e788e7d3 1692 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1693 PUSHMARK(SP);
774d564b 1694 XPUSHs(msg);
20cec16a 1695 PUTBACK;
864dbfa3 1696 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1697 POPSTACK;
774d564b 1698 LEAVE;
20cec16a 1699 return;
1700 }
748a9306 1701 }
bf49b057
GS		 1702 {
1703 PerlIO *serr = Perl_error_log;
1704
1705 PerlIO_write(serr, message, msglen);
a687059c 1706#ifdef LEAKTEST
bf49b057
GS		 1707 DEBUG_L(*message == '!'
1708 ? (xstat(message[1]=='!'
1709 ? (message[2]=='!' ? 2 : 1)
1710 : 0)
1711 , 0)
1712 : 0);
a687059c 1713#endif
bf49b057
GS		 1714 (void)PerlIO_flush(serr);
1715 }
a687059c 1716}
8d063cd8 1717
c5be433b 1718#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1719void
1720Perl_warn_nocontext(const char *pat, ...)
1721{
1722 dTHX;
1723 va_list args;
1724 va_start(args, pat);
c5be433b 1725 vwarn(pat, &args);
cea2e8a9
GS		 1726 va_end(args);
1727}
1728#endif /* PERL_IMPLICIT_CONTEXT */
1729
1730void
1731Perl_warn(pTHX_ const char *pat, ...)
1732{
1733 va_list args;
1734 va_start(args, pat);
c5be433b 1735 vwarn(pat, &args);
cea2e8a9
GS		 1736 va_end(args);
1737}
1738
c5be433b
GS		 1739#if defined(PERL_IMPLICIT_CONTEXT)
1740void
1741Perl_warner_nocontext(U32 err, const char *pat, ...)
1742{
1743 dTHX;
1744 va_list args;
1745 va_start(args, pat);
1746 vwarner(err, pat, &args);
1747 va_end(args);
1748}
1749#endif /* PERL_IMPLICIT_CONTEXT */
1750
599cee73 1751void
864dbfa3 1752Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM		 1753{
1754 va_list args;
c5be433b
GS		 1755 va_start(args, pat);
1756 vwarner(err, pat, &args);
1757 va_end(args);
1758}
1759
1760void
1761Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1762{
1763 dTHR;
599cee73
PM		 1764 char *message;
1765 HV *stash;
1766 GV *gv;
1767 CV *cv;
06bf62c7
GS		 1768 SV *msv;
1769 STRLEN msglen;
599cee73 1770
5a844595 1771 msv = vmess(pat, args);
06bf62c7 1772 message = SvPV(msv, msglen);
599cee73
PM		 1773
1774 if (ckDEAD(err)) {
1775#ifdef USE_THREADS
b900a521 1776 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
599cee73
PM		 1777#endif /* USE_THREADS */
1778 if (PL_diehook) {
cea2e8a9 1779 /* sv_2cv might call Perl_croak() */
599cee73
PM		 1780 SV *olddiehook = PL_diehook;
1781 ENTER;
1782 SAVESPTR(PL_diehook);
1783 PL_diehook = Nullsv;
1784 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1785 LEAVE;
1786 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1787 dSP;
1788 SV *msg;
1789
1790 ENTER;
06bf62c7 1791 msg = newSVpvn(message, msglen);
599cee73
PM		 1792 SvREADONLY_on(msg);
1793 SAVEFREESV(msg);
1794
1795 PUSHMARK(sp);
1796 XPUSHs(msg);
1797 PUTBACK;
864dbfa3 1798 call_sv((SV*)cv, G_DISCARD);
599cee73
PM		 1799
1800 LEAVE;
1801 }
1802 }
1803 if (PL_in_eval) {
06bf62c7 1804 PL_restartop = die_where(message, msglen);
599cee73
PM		 1805 JMPENV_JUMP(3);
1806 }
bf49b057
GS		 1807 {
1808 PerlIO *serr = Perl_error_log;
1809 PerlIO_write(serr, message, msglen);
1810 (void)PerlIO_flush(serr);
1811 }
599cee73
PM		 1812 my_failure_exit();
1813
1814 }
1815 else {
1816 if (PL_warnhook) {
cea2e8a9 1817 /* sv_2cv might call Perl_warn() */
599cee73
PM		 1818 dTHR;
1819 SV *oldwarnhook = PL_warnhook;
1820 ENTER;
1821 SAVESPTR(PL_warnhook);
1822 PL_warnhook = Nullsv;
1823 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1824 LEAVE;
1825 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1826 dSP;
1827 SV *msg;
1828
1829 ENTER;
06bf62c7 1830 msg = newSVpvn(message, msglen);
599cee73
PM		 1831 SvREADONLY_on(msg);
1832 SAVEFREESV(msg);
1833
1834 PUSHMARK(sp);
1835 XPUSHs(msg);
1836 PUTBACK;
864dbfa3 1837 call_sv((SV*)cv, G_DISCARD);
599cee73
PM		 1838
1839 LEAVE;
1840 return;
1841 }
1842 }
bf49b057
GS		 1843 {
1844 PerlIO *serr = Perl_error_log;
1845 PerlIO_write(serr, message, msglen);
599cee73 1846#ifdef LEAKTEST
bf49b057 1847 DEBUG_L(xstat());
599cee73 1848#endif
bf49b057
GS		 1849 (void)PerlIO_flush(serr);
1850 }
599cee73
PM		 1851 }
1852}
1853
a0d0e21e 1854#ifndef VMS /* VMS' my_setenv() is in VMS.c */
2c2d71f5 1855#if !defined(WIN32) && !defined(CYGWIN)
8d063cd8 1856void
864dbfa3 1857Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1858{
f2517201
GS		 1859#ifndef PERL_USE_SAFE_PUTENV
1860 /* most putenv()s leak, so we manipulate environ directly */
79072805 1861 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1862
3280af22 1863 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW		 1864 I32 j;
1865 I32 max;
fe14fcc3
LW		 1866 char **tmpenv;
1867
de3bb511 1868 /*SUPPRESS 530*/
fe14fcc3 1869 for (max = i; environ[max]; max++) ;
f2517201
GS		 1870 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1871 for (j=0; j<max; j++) { /* copy environment */
1872 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1873 strcpy(tmpenv[j], environ[j]);
1874 }
fe14fcc3
LW		 1875 tmpenv[max] = Nullch;
1876 environ = tmpenv; /* tell exec where it is now */
1877 }
a687059c 1878 if (!val) {
f2517201 1879 safesysfree(environ[i]);
a687059c
LW		 1880 while (environ[i]) {
1881 environ[i] = environ[i+1];
1882 i++;
1883 }
1884 return;
1885 }
8d063cd8 1886 if (!environ[i]) { /* does not exist yet */
f2517201 1887 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW		 1888 environ[i+1] = Nullch; /* make sure it's null terminated */
1889 }
fe14fcc3 1890 else
f2517201
GS		 1891 safesysfree(environ[i]);
1892 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1893
a687059c 1894 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
f2517201
GS		 1895
1896#else /* PERL_USE_SAFE_PUTENV */
1897 char *new_env;
1898
1899 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
f2517201 1900 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
f2517201
GS		 1901 (void)putenv(new_env);
1902#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW		 1903}
1904
2c2d71f5
JH		 1905#else /* WIN32 || CYGWIN */
1906#if defined(CYGWIN)
1cab015a
EF		 1907/*
1908 * Save environ of perl.exe, currently Cygwin links in separate environ's
1909 * for each exe/dll. Probably should be a member of impure_ptr.
1910 */
1911static char ***Perl_main_environ;
1912
1913EXTERN_C void
1914Perl_my_setenv_init(char ***penviron)
1915{
1916 Perl_main_environ = penviron;
1917}
1918
1919void
1920my_setenv(char *nam, char *val)
1921{
1922 /* You can not directly manipulate the environ[] array because
1923 * the routines do some additional work that syncs the Cygwin
1924 * environment with the Windows environment.
1925 */
1926 char *oldstr = environ[setenv_getix(nam)];
1927
1928 if (!val) {
1929 if (!oldstr)
1930 return;
1931 unsetenv(nam);
1932 Safefree(oldstr);
1933 return;
1934 }
1935 setenv(nam, val, 1);
1936 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1937 if(oldstr && environ[setenv_getix(nam)] != oldstr)
1938 Safefree(oldstr);
1939}
3e3baf6d 1940#else /* if WIN32 */
68dc0745 1941
1942void
864dbfa3 1943Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 1944{
3e3baf6d
TB		 1945
1946#ifdef USE_WIN32_RTL_ENV
1947
68dc0745 1948 register char *envstr;
1949 STRLEN namlen = strlen(nam);
3e3baf6d
TB		 1950 STRLEN vallen;
1951 char *oldstr = environ[setenv_getix(nam)];
1952
1953 /* putenv() has totally broken semantics in both the Borland
1954 * and Microsoft CRTLs. They either store the passed pointer in
1955 * the environment without making a copy, or make a copy and don't
1956 * free it. And on top of that, they dont free() old entries that
1957 * are being replaced/deleted. This means the caller must
1958 * free any old entries somehow, or we end up with a memory
1959 * leak every time my_setenv() is called. One might think
1960 * one could directly manipulate environ[], like the UNIX code
1961 * above, but direct changes to environ are not allowed when
1962 * calling putenv(), since the RTLs maintain an internal
1963 * *copy* of environ[]. Bad, bad, *bad* stink.
1964 * GSAR 97-06-07
1965 */
68dc0745 1966
3e3baf6d
TB		 1967 if (!val) {
1968 if (!oldstr)
1969 return;
1970 val = "";
1971 vallen = 0;
1972 }
1973 else
1974 vallen = strlen(val);
f2517201 1975 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 1976 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 1977 (void)PerlEnv_putenv(envstr);
3e3baf6d 1978 if (oldstr)
f2517201 1979 safesysfree(oldstr);
3e3baf6d 1980#ifdef _MSC_VER
f2517201 1981 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB		 1982#endif
1983
1984#else /* !USE_WIN32_RTL_ENV */
1985
ac5c734f
GS		 1986 register char *envstr;
1987 STRLEN len = strlen(nam) + 3;
1988 if (!val) {
1989 val = "";
1990 }
1991 len += strlen(val);
1992 New(904, envstr, len, char);
1993 (void)sprintf(envstr,"%s=%s",nam,val);
1994 (void)PerlEnv_putenv(envstr);
1995 Safefree(envstr);
3e3baf6d
TB		 1996
1997#endif
1998}
1999
2000#endif /* WIN32 */
1cab015a 2001#endif
3e3baf6d
TB		 2002
2003I32
864dbfa3 2004Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB		 2005{
2006 register I32 i, len = strlen(nam);
2007
2008 for (i = 0; environ[i]; i++) {
2009 if (
2010#ifdef WIN32
2011 strnicmp(environ[i],nam,len) == 0
2012#else
2013 strnEQ(environ[i],nam,len)
2014#endif
2015 && environ[i][len] == '=')
2016 break; /* strnEQ must come first to avoid */
2017 } /* potential SEGV's */
2018 return i;
68dc0745 2019}
2020
a0d0e21e 2021#endif /* !VMS */
378cc40b 2022
16d20bd9 2023#ifdef UNLINK_ALL_VERSIONS
79072805 2024I32
864dbfa3 2025Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 2026{
79072805 2027 I32 i;
378cc40b 2028
6ad3d225 2029 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW		 2030 return i ? 0 : -1;
2031}
2032#endif
2033
85e6fe83 2034#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 2035char *
864dbfa3 2036Perl_my_bcopy(pTHX_ register const char *from,register char *to,register I32 len)
378cc40b
LW		 2037{
2038 char *retval = to;
2039
7c0587c8
LW		 2040 if (from - to >= 0) {
2041 while (len--)
2042 *to++ = *from++;
2043 }
2044 else {
2045 to += len;
2046 from += len;
2047 while (len--)
faf8582f 2048 *(--to) = *(--from);
7c0587c8 2049 }
378cc40b
LW		 2050 return retval;
2051}
ffed7fef 2052#endif
378cc40b 2053
fc36a67e 2054#ifndef HAS_MEMSET
2055void *
864dbfa3 2056Perl_my_memset(pTHX_ register char *loc, register I32 ch, register I32 len)
fc36a67e 2057{
2058 char *retval = loc;
2059
2060 while (len--)
2061 *loc++ = ch;
2062 return retval;
2063}
2064#endif
2065
7c0587c8 2066#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 2067char *
864dbfa3 2068Perl_my_bzero(pTHX_ register char *loc, register I32 len)
378cc40b
LW		 2069{
2070 char *retval = loc;
2071
2072 while (len--)
2073 *loc++ = 0;
2074 return retval;
2075}
2076#endif
7c0587c8 2077
36477c24 2078#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2079I32
864dbfa3 2080Perl_my_memcmp(pTHX_ const char *s1, const char *s2, register I32 len)
7c0587c8 2081{
36477c24 2082 register U8 *a = (U8 *)s1;
2083 register U8 *b = (U8 *)s2;
79072805 2084 register I32 tmp;
7c0587c8
LW		 2085
2086 while (len--) {
36477c24 2087 if (tmp = *a++ - *b++)
7c0587c8
LW		 2088 return tmp;
2089 }
2090 return 0;
2091}
36477c24 2092#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2093
fe14fcc3 2094#ifndef HAS_VPRINTF
a687059c 2095
85e6fe83 2096#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2097char *
2098#else
2099int
2100#endif
08105a92 2101vsprintf(char *dest, const char *pat, char *args)
a687059c
LW		 2102{
2103 FILE fakebuf;
2104
2105 fakebuf._ptr = dest;
2106 fakebuf._cnt = 32767;
35c8bce7
LW		 2107#ifndef _IOSTRG
2108#define _IOSTRG 0
2109#endif
a687059c
LW		 2110 fakebuf._flag = _IOWRT|_IOSTRG;
2111 _doprnt(pat, args, &fakebuf); /* what a kludge */
2112 (void)putc('\0', &fakebuf);
85e6fe83 2113#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2114 return(dest);
2115#else
2116 return 0; /* perl doesn't use return value */
2117#endif
2118}
2119
fe14fcc3 2120#endif /* HAS_VPRINTF */
a687059c
LW		 2121
2122#ifdef MYSWAP
ffed7fef 2123#if BYTEORDER != 0x4321
a687059c 2124short
864dbfa3 2125Perl_my_swap(pTHX_ short s)
a687059c
LW		 2126{
2127#if (BYTEORDER & 1) == 0
2128 short result;
2129
2130 result = ((s & 255) << 8) + ((s >> 8) & 255);
2131 return result;
2132#else
2133 return s;
2134#endif
2135}
2136
2137long
864dbfa3 2138Perl_my_htonl(pTHX_ long l)
a687059c
LW		 2139{
2140 union {
2141 long result;
ffed7fef 2142 char c[sizeof(long)];
a687059c
LW		 2143 } u;
2144
ffed7fef 2145#if BYTEORDER == 0x1234
a687059c
LW		 2146 u.c[0] = (l >> 24) & 255;
2147 u.c[1] = (l >> 16) & 255;
2148 u.c[2] = (l >> 8) & 255;
2149 u.c[3] = l & 255;
2150 return u.result;
2151#else
ffed7fef 2152#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2153 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2154#else
79072805
LW		 2155 register I32 o;
2156 register I32 s;
a687059c 2157
ffed7fef
LW		 2158 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2159 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW		 2160 }
2161 return u.result;
2162#endif
2163#endif
2164}
2165
2166long
864dbfa3 2167Perl_my_ntohl(pTHX_ long l)
a687059c
LW		 2168{
2169 union {
2170 long l;
ffed7fef 2171 char c[sizeof(long)];
a687059c
LW		 2172 } u;
2173
ffed7fef 2174#if BYTEORDER == 0x1234
a687059c
LW		 2175 u.c[0] = (l >> 24) & 255;
2176 u.c[1] = (l >> 16) & 255;
2177 u.c[2] = (l >> 8) & 255;
2178 u.c[3] = l & 255;
2179 return u.l;
2180#else
ffed7fef 2181#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2182 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2183#else
79072805
LW		 2184 register I32 o;
2185 register I32 s;
a687059c
LW		 2186
2187 u.l = l;
2188 l = 0;
ffed7fef
LW		 2189 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2190 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW		 2191 }
2192 return l;
2193#endif
2194#endif
2195}
2196
ffed7fef 2197#endif /* BYTEORDER != 0x4321 */
988174c1
LW		 2198#endif /* MYSWAP */
2199
2200/*
2201 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2202 * If these functions are defined,
2203 * the BYTEORDER is neither 0x1234 nor 0x4321.
2204 * However, this is not assumed.
2205 * -DWS
2206 */
2207
2208#define HTOV(name,type) \
2209 type \
ba106d47 2210 name (register type n) \
988174c1
LW		 2211 { \
2212 union { \
2213 type value; \
2214 char c[sizeof(type)]; \
2215 } u; \
79072805
LW		 2216 register I32 i; \
2217 register I32 s; \
988174c1
LW		 2218 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2219 u.c[i] = (n >> s) & 0xFF; \
2220 } \
2221 return u.value; \
2222 }
2223
2224#define VTOH(name,type) \
2225 type \
ba106d47 2226 name (register type n) \
988174c1
LW		 2227 { \
2228 union { \
2229 type value; \
2230 char c[sizeof(type)]; \
2231 } u; \
79072805
LW		 2232 register I32 i; \
2233 register I32 s; \
988174c1
LW		 2234 u.value = n; \
2235 n = 0; \
2236 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2237 n += (u.c[i] & 0xFF) << s; \
2238 } \
2239 return n; \
2240 }
2241
2242#if defined(HAS_HTOVS) && !defined(htovs)
2243HTOV(htovs,short)
2244#endif
2245#if defined(HAS_HTOVL) && !defined(htovl)
2246HTOV(htovl,long)
2247#endif
2248#if defined(HAS_VTOHS) && !defined(vtohs)
2249VTOH(vtohs,short)
2250#endif
2251#if defined(HAS_VTOHL) && !defined(vtohl)
2252VTOH(vtohl,long)
2253#endif
a687059c 2254
5f05dabc 2255 /* VMS' my_popen() is in VMS.c, same with OS/2. */
cd39f2b6 2256#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
760ac839 2257PerlIO *
864dbfa3 2258Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW		 2259{
2260 int p[2];
8ac85365 2261 register I32 This, that;
d8a83dd3 2262 register Pid_t pid;
79072805 2263 SV *sv;
1738f5c4 2264 I32 doexec = strNE(cmd,"-");
e446cec8
IZ		 2265 I32 did_pipes = 0;
2266 int pp[2];
a687059c 2267
45bc9206 2268 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ		 2269#ifdef OS2
2270 if (doexec) {
2271 return my_syspopen(cmd,mode);
2272 }
2273#endif
8ac85365
NIS		 2274 This = (*mode == 'w');
2275 that = !This;
3280af22 2276 if (doexec && PL_tainting) {
bbce6d69 2277 taint_env();
2278 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2279 }
c2267164
IZ		 2280 if (PerlProc_pipe(p) < 0)
2281 return Nullfp;
e446cec8
IZ		 2282 if (doexec && PerlProc_pipe(pp) >= 0)
2283 did_pipes = 1;
a687059c
LW		 2284 while ((pid = (doexec?vfork():fork())) < 0) {
2285 if (errno != EAGAIN) {
6ad3d225 2286 PerlLIO_close(p[This]);
e446cec8
IZ		 2287 if (did_pipes) {
2288 PerlLIO_close(pp[0]);
2289 PerlLIO_close(pp[1]);
2290 }
a687059c 2291 if (!doexec)
cea2e8a9 2292 Perl_croak(aTHX_ "Can't fork");
a687059c
LW		 2293 return Nullfp;
2294 }
2295 sleep(5);
2296 }
2297 if (pid == 0) {
79072805
LW		 2298 GV* tmpgv;
2299
30ac6d9b
GS		 2300#undef THIS
2301#undef THAT
a687059c 2302#define THIS that
8ac85365 2303#define THAT This
6ad3d225 2304 PerlLIO_close(p[THAT]);
e446cec8
IZ		 2305 if (did_pipes) {
2306 PerlLIO_close(pp[0]);
2307#if defined(HAS_FCNTL) && defined(F_SETFD)
2308 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2309#endif
2310 }
a687059c 2311 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS		 2312 PerlLIO_dup2(p[THIS], *mode == 'r');
2313 PerlLIO_close(p[THIS]);
a687059c 2314 }
4435c477 2315#ifndef OS2
a687059c 2316 if (doexec) {
a0d0e21e 2317#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW		 2318 int fd;
2319
2320#ifndef NOFILE
2321#define NOFILE 20
2322#endif
6b88bc9c 2323 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ		 2324 if (fd != pp[1])
2325 PerlLIO_close(fd);
ae986130 2326#endif
e446cec8 2327 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2328 PerlProc__exit(1);
a687059c 2329 }
4435c477 2330#endif /* defined OS2 */
de3bb511 2331 /*SUPPRESS 560*/
85e6fe83 2332 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
d8a83dd3 2333 sv_setiv(GvSV(tmpgv), getpid());
3280af22
NIS		 2334 PL_forkprocess = 0;
2335 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW		 2336 return Nullfp;
2337#undef THIS
2338#undef THAT
2339 }
62b28dd9 2340 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2341 PerlLIO_close(p[that]);
e446cec8
IZ		 2342 if (did_pipes)
2343 PerlLIO_close(pp[1]);
8ac85365 2344 if (p[that] < p[This]) {
6ad3d225
GS		 2345 PerlLIO_dup2(p[This], p[that]);
2346 PerlLIO_close(p[This]);
8ac85365 2347 p[This] = p[that];
62b28dd9 2348 }
3280af22 2349 sv = *av_fetch(PL_fdpid,p[This],TRUE);
a0d0e21e 2350 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2351 SvIVX(sv) = pid;
3280af22 2352 PL_forkprocess = pid;
e446cec8
IZ		 2353 if (did_pipes && pid > 0) {
2354 int errkid;
2355 int n = 0, n1;
2356
2357 while (n < sizeof(int)) {
2358 n1 = PerlLIO_read(pp[0],
2359 (void*)(((char*)&errkid)+n),
2360 (sizeof(int)) - n);
2361 if (n1 <= 0)
2362 break;
2363 n += n1;
2364 }
2f96c702
IZ		 2365 PerlLIO_close(pp[0]);
2366 did_pipes = 0;
e446cec8
IZ		 2367 if (n) { /* Error */
2368 if (n != sizeof(int))
cea2e8a9 2369 Perl_croak(aTHX_ "panic: kid popen errno read");
e446cec8
IZ		 2370 errno = errkid; /* Propagate errno from kid */
2371 return Nullfp;
2372 }
2373 }
2374 if (did_pipes)
2375 PerlLIO_close(pp[0]);
8ac85365 2376 return PerlIO_fdopen(p[This], mode);
a687059c 2377}
7c0587c8 2378#else
55497cff 2379#if defined(atarist) || defined(DJGPP)
7c0587c8 2380FILE *popen();
760ac839 2381PerlIO *
864dbfa3 2382Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2383{
760ac839 2384 /* Needs work for PerlIO ! */
55497cff 2385 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 2386 PERL_FLUSHALL_FOR_CHILD;
55497cff 2387 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW		 2388}
2389#endif
2390
2391#endif /* !DOSISH */
a687059c 2392
748a9306 2393#ifdef DUMP_FDS
35ff7856 2394void
864dbfa3 2395Perl_dump_fds(pTHX_ char *s)
ae986130
LW		 2396{
2397 int fd;
2398 struct stat tmpstatbuf;
2399
bf49b057 2400 PerlIO_printf(Perl_debug_log,"%s", s);
ae986130 2401 for (fd = 0; fd < 32; fd++) {
6ad3d225 2402 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
bf49b057 2403 PerlIO_printf(Perl_debug_log," %d",fd);
ae986130 2404 }
bf49b057 2405 PerlIO_printf(Perl_debug_log,"\n");
ae986130 2406}
35ff7856 2407#endif /* DUMP_FDS */
ae986130 2408
fe14fcc3 2409#ifndef HAS_DUP2
fec02dd3 2410int
ba106d47 2411dup2(int oldfd, int newfd)
a687059c 2412{
a0d0e21e 2413#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD		 2414 if (oldfd == newfd)
2415 return oldfd;
6ad3d225 2416 PerlLIO_close(newfd);
fec02dd3 2417 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2418#else
fc36a67e 2419#define DUP2_MAX_FDS 256
2420 int fdtmp[DUP2_MAX_FDS];
79072805 2421 I32 fdx = 0;
ae986130
LW		 2422 int fd;
2423
fe14fcc3 2424 if (oldfd == newfd)
fec02dd3 2425 return oldfd;
6ad3d225 2426 PerlLIO_close(newfd);
fc36a67e 2427 /* good enough for low fd's... */
6ad3d225 2428 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2429 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2430 PerlLIO_close(fd);
fc36a67e 2431 fd = -1;
2432 break;
2433 }
ae986130 2434 fdtmp[fdx++] = fd;
fc36a67e 2435 }
ae986130 2436 while (fdx > 0)
6ad3d225 2437 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2438 return fd;
62b28dd9 2439#endif
a687059c
LW		 2440}
2441#endif
2442
ff68c719 2443
2444#ifdef HAS_SIGACTION
2445
2446Sighandler_t
864dbfa3 2447Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2448{
2449 struct sigaction act, oact;
2450
2451 act.sa_handler = handler;
2452 sigemptyset(&act.sa_mask);
2453 act.sa_flags = 0;
2454#ifdef SA_RESTART
2455 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2456#endif
85264bed
CS		 2457#ifdef SA_NOCLDWAIT
2458 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2459 act.sa_flags |= SA_NOCLDWAIT;
2460#endif
ff68c719 2461 if (sigaction(signo, &act, &oact) == -1)
36477c24 2462 return SIG_ERR;
ff68c719 2463 else
36477c24 2464 return oact.sa_handler;
ff68c719 2465}
2466
2467Sighandler_t
864dbfa3 2468Perl_rsignal_state(pTHX_ int signo)
ff68c719 2469{
2470 struct sigaction oact;
2471
2472 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2473 return SIG_ERR;
2474 else
2475 return oact.sa_handler;
2476}
2477
2478int
864dbfa3 2479Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2480{
2481 struct sigaction act;
2482
2483 act.sa_handler = handler;
2484 sigemptyset(&act.sa_mask);
2485 act.sa_flags = 0;
2486#ifdef SA_RESTART
2487 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2488#endif
85264bed
CS		 2489#ifdef SA_NOCLDWAIT
2490 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2491 act.sa_flags |= SA_NOCLDWAIT;
2492#endif
ff68c719 2493 return sigaction(signo, &act, save);
2494}
2495
2496int
864dbfa3 2497Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2498{
2499 return sigaction(signo, save, (struct sigaction *)NULL);
2500}
2501
2502#else /* !HAS_SIGACTION */
2503
2504Sighandler_t
864dbfa3 2505Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2506{
6ad3d225 2507 return PerlProc_signal(signo, handler);
ff68c719 2508}
2509
2510static int sig_trapped;
2511
2512static
2513Signal_t
4e35701f 2514sig_trap(int signo)
ff68c719 2515{
2516 sig_trapped++;
2517}
2518
2519Sighandler_t
864dbfa3 2520Perl_rsignal_state(pTHX_ int signo)
ff68c719 2521{
2522 Sighandler_t oldsig;
2523
2524 sig_trapped = 0;
6ad3d225
GS		 2525 oldsig = PerlProc_signal(signo, sig_trap);
2526 PerlProc_signal(signo, oldsig);
ff68c719 2527 if (sig_trapped)
6ad3d225 2528 PerlProc_kill(getpid(), signo);
ff68c719 2529 return oldsig;
2530}
2531
2532int
864dbfa3 2533Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2534{
6ad3d225 2535 *save = PerlProc_signal(signo, handler);
ff68c719 2536 return (*save == SIG_ERR) ? -1 : 0;
2537}
2538
2539int
864dbfa3 2540Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2541{
6ad3d225 2542 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719 2543}
2544
2545#endif /* !HAS_SIGACTION */
2546
5f05dabc 2547 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
cd39f2b6 2548#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
79072805 2549I32
864dbfa3 2550Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2551{
ff68c719 2552 Sigsave_t hstat, istat, qstat;
a687059c 2553 int status;
a0d0e21e 2554 SV **svp;
d8a83dd3
JH		 2555 Pid_t pid;
2556 Pid_t pid2;
03136e13
CS		 2557 bool close_failed;
2558 int saved_errno;
2559#ifdef VMS
2560 int saved_vaxc_errno;
2561#endif
22fae026
TM		 2562#ifdef WIN32
2563 int saved_win32_errno;
2564#endif
a687059c 2565
3280af22 2566 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
d8a83dd3 2567 pid = SvIVX(*svp);
a0d0e21e 2568 SvREFCNT_dec(*svp);
3280af22 2569 *svp = &PL_sv_undef;
ddcf38b7
IZ		 2570#ifdef OS2
2571 if (pid == -1) { /* Opened by popen. */
2572 return my_syspclose(ptr);
2573 }
2574#endif
03136e13
CS		 2575 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2576 saved_errno = errno;
2577#ifdef VMS
2578 saved_vaxc_errno = vaxc$errno;
2579#endif
22fae026
TM		 2580#ifdef WIN32
2581 saved_win32_errno = GetLastError();
2582#endif
03136e13 2583 }
7c0587c8 2584#ifdef UTS
6ad3d225 2585 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2586#endif
ff68c719 2587 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2588 rsignal_save(SIGINT, SIG_IGN, &istat);
2589 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306 2590 do {
1d3434b8
GS		 2591 pid2 = wait4pid(pid, &status, 0);
2592 } while (pid2 == -1 && errno == EINTR);
ff68c719 2593 rsignal_restore(SIGHUP, &hstat);
2594 rsignal_restore(SIGINT, &istat);
2595 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS		 2596 if (close_failed) {
2597 SETERRNO(saved_errno, saved_vaxc_errno);
2598 return -1;
2599 }
1d3434b8 2600 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2601}
4633a7c4
LW		 2602#endif /* !DOSISH */
2603
cd39f2b6 2604#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
79072805 2605I32
d8a83dd3 2606Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
20188a90 2607{
79072805
LW		 2608 SV *sv;
2609 SV** svp;
fc36a67e 2610 char spid[TYPE_CHARS(int)];
20188a90
LW		 2611
2612 if (!pid)
2613 return -1;
20188a90 2614 if (pid > 0) {
7b0972df 2615 sprintf(spid, "%"IVdf, (IV)pid);
3280af22
NIS		 2616 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2617 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2618 *statusp = SvIVX(*svp);
3280af22 2619 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2620 return pid;
2621 }
2622 }
2623 else {
79072805 2624 HE *entry;
20188a90 2625
3280af22
NIS		 2626 hv_iterinit(PL_pidstatus);
2627 if (entry = hv_iternext(PL_pidstatus)) {
a0d0e21e 2628 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2629 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2630 *statusp = SvIVX(sv);
7b0972df 2631 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2632 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2633 return pid;
2634 }
2635 }
79072805 2636#ifdef HAS_WAITPID
367f3c24
IZ		 2637# ifdef HAS_WAITPID_RUNTIME
2638 if (!HAS_WAITPID_RUNTIME)
2639 goto hard_way;
2640# endif
f55ee38a 2641 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ		 2642#endif
2643#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2644 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ		 2645#endif
2646#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2647 hard_way:
a0d0e21e
LW		 2648 {
2649 I32 result;
2650 if (flags)
cea2e8a9 2651 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2652 else {
76e3520e 2653 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW		 2654 pidgone(result,*statusp);
2655 if (result < 0)
2656 *statusp = -1;
2657 }
2658 return result;
a687059c
LW		 2659 }
2660#endif
a687059c 2661}
2d7a9237 2662#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2663
7c0587c8 2664void
de3bb511 2665/*SUPPRESS 590*/
d8a83dd3 2666Perl_pidgone(pTHX_ Pid_t pid, int status)
a687059c 2667{
79072805 2668 register SV *sv;
fc36a67e 2669 char spid[TYPE_CHARS(int)];
a687059c 2670
7b0972df 2671 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2672 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2673 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2674 SvIVX(sv) = status;
20188a90 2675 return;
a687059c
LW		 2676}
2677
55497cff 2678#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2679int pclose();
ddcf38b7
IZ		 2680#ifdef HAS_FORK
2681int /* Cannot prototype with I32
2682 in os2ish.h. */
ba106d47 2683my_syspclose(PerlIO *ptr)
ddcf38b7 2684#else
79072805 2685I32
864dbfa3 2686Perl_my_pclose(pTHX_ PerlIO *ptr)
ddcf38b7 2687#endif
a687059c 2688{
760ac839
LW		 2689 /* Needs work for PerlIO ! */
2690 FILE *f = PerlIO_findFILE(ptr);
2691 I32 result = pclose(f);
933fea7f
GS		 2692#if defined(DJGPP)
2693 result = (result << 8) & 0xff00;
2694#endif
760ac839
LW		 2695 PerlIO_releaseFILE(ptr,f);
2696 return result;
a687059c 2697}
7c0587c8 2698#endif
9f68db38
LW		 2699
2700void
864dbfa3 2701Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2702{
79072805 2703 register I32 todo;
08105a92 2704 register const char *frombase = from;
9f68db38
LW		 2705
2706 if (len == 1) {
08105a92 2707 register const char c = *from;
9f68db38 2708 while (count-- > 0)
5926133d 2709 *to++ = c;
9f68db38
LW		 2710 return;
2711 }
2712 while (count-- > 0) {
2713 for (todo = len; todo > 0; todo--) {
2714 *to++ = *from++;
2715 }
2716 from = frombase;
2717 }
2718}
0f85fab0 2719
463ee0b2 2720U32
65202027 2721Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW		 2722{
2723 long along;
2724
27e2fb84 2725#if CASTFLAGS & 2
34de22dd
LW		 2726# define BIGDOUBLE 2147483648.0
2727 if (f >= BIGDOUBLE)
2728 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2729#endif
0f85fab0
LW		 2730 if (f >= 0.0)
2731 return (unsigned long)f;
2732 along = (long)f;
2733 return (unsigned long)along;
2734}
ed6116ce 2735# undef BIGDOUBLE
5d94fbed 2736
5d94fbed
AD		 2737/* Unfortunately, on some systems the cast_uv() function doesn't
2738 work with the system-supplied definition of ULONG_MAX. The
2739 comparison (f >= ULONG_MAX) always comes out true. It must be a
2740 problem with the compiler constant folding.
2741
2742 In any case, this workaround should be fine on any two's complement
2743 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2744 ccflags.
2745 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2746*/
1eb770ff 2747
2748/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2749 of LONG_(MIN/MAX).
2750 -- Kenneth Albanowski <kjahds@kjahds.com>
2751*/
2752
20cec16a 2753#ifndef MY_UV_MAX
2754# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD		 2755#endif
2756
ed6116ce 2757I32
65202027 2758Perl_cast_i32(pTHX_ NV f)
ed6116ce 2759{
20cec16a 2760 if (f >= I32_MAX)
2761 return (I32) I32_MAX;
2762 if (f <= I32_MIN)
2763 return (I32) I32_MIN;
ed6116ce
LW		 2764 return (I32) f;
2765}
a0d0e21e
LW		 2766
2767IV
65202027 2768Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2769{
25da4f38
IZ		 2770 if (f >= IV_MAX) {
2771 UV uv;
2772
65202027 2773 if (f >= (NV)UV_MAX)
25da4f38
IZ		 2774 return (IV) UV_MAX;
2775 uv = (UV) f;
2776 return (IV)uv;
2777 }
20cec16a 2778 if (f <= IV_MIN)
2779 return (IV) IV_MIN;
a0d0e21e
LW		 2780 return (IV) f;
2781}
5d94fbed
AD		 2782
2783UV
65202027 2784Perl_cast_uv(pTHX_ NV f)
5d94fbed 2785{
20cec16a 2786 if (f >= MY_UV_MAX)
2787 return (UV) MY_UV_MAX;
25da4f38
IZ		 2788 if (f < 0) {
2789 IV iv;
2790
2791 if (f < IV_MIN)
2792 return (UV)IV_MIN;
2793 iv = (IV) f;
2794 return (UV) iv;
2795 }
5d94fbed
AD		 2796 return (UV) f;
2797}
2798
fe14fcc3 2799#ifndef HAS_RENAME
79072805 2800I32
864dbfa3 2801Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2802{
93a17b20
LW		 2803 char *fa = strrchr(a,'/');
2804 char *fb = strrchr(b,'/');
62b28dd9
LW		 2805 struct stat tmpstatbuf1;
2806 struct stat tmpstatbuf2;
46fc3d4c 2807 SV *tmpsv = sv_newmortal();
62b28dd9
LW		 2808
2809 if (fa)
2810 fa++;
2811 else
2812 fa = a;
2813 if (fb)
2814 fb++;
2815 else
2816 fb = b;
2817 if (strNE(a,b))
2818 return FALSE;
2819 if (fa == a)
46fc3d4c 2820 sv_setpv(tmpsv, ".");
62b28dd9 2821 else
46fc3d4c 2822 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2823 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW		 2824 return FALSE;
2825 if (fb == b)
46fc3d4c 2826 sv_setpv(tmpsv, ".");
62b28dd9 2827 else
46fc3d4c 2828 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2829 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW		 2830 return FALSE;
2831 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2832 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2833}
fe14fcc3
LW		 2834#endif /* !HAS_RENAME */
2835
9e24b6e2 2836NV
864dbfa3 2837Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
4f19785b
WSI		 2838{
2839 register char *s = start;
9e24b6e2
JH		 2840 register NV rnv = 0.0;
2841 register UV ruv = 0;
252aa082 2842 register bool seenb = FALSE;
9e24b6e2 2843 register bool overflowed = FALSE;
252aa082
JH		 2844
2845 for (; len-- && *s; s++) {
2846 if (!(*s == '0' || *s == '1')) {
2847 if (*s == '_')
9e24b6e2 2848 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 2849 if (seenb == FALSE && *s == 'b' && ruv == 0) {
252aa082
JH		 2850 /* Disallow 0bbb0b0bbb... */
2851 seenb = TRUE;
252aa082
JH		 2852 continue;
2853 }
2854 else {
2855 dTHR;
627300f0
JH		 2856 if (ckWARN(WARN_DIGIT))
2857 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2858 "Illegal binary digit '%c' ignored", *s);
2859 break;
2860 }
9e24b6e2
JH		 2861 }
2862 if (!overflowed) {
2863 register UV xuv = ruv << 1;
2864
2865 if ((xuv >> 1) != ruv) {
2866 dTHR;
2867 overflowed = TRUE;
2868 rnv = (NV) ruv;
627300f0
JH		 2869 if (ckWARN_d(WARN_OVERFLOW))
2870 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH		 2871 "Integer overflow in binary number");
2872 } else
2873 ruv = xuv | (*s - '0');
2874 }
2875 if (overflowed) {
2876 rnv *= 2;
2877 /* If an NV has not enough bits in its mantissa to
2878 * represent an UV this summing of small low-order numbers
2879 * is a waste of time (because the NV cannot preserve
2880 * the low-order bits anyway): we could just remember when
2881 * did we overflow and in the end just multiply rnv by the
2cc4c2dc 2882 * right amount. */
9e24b6e2 2883 rnv += (*s - '0');
f248d071 2884 }
4f19785b 2885 }
9e24b6e2
JH		 2886 if (!overflowed)
2887 rnv = (NV) ruv;
893fe2c2 2888 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2889#if UVSIZE > 4
893fe2c2
JH		 2890 || (!overflowed && ruv > 0xffffffff )
2891#endif
2892 ) {
252aa082 2893 dTHR;
627300f0
JH		 2894 if (ckWARN(WARN_PORTABLE))
2895 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2896 "Binary number > 0b11111111111111111111111111111111 non-portable");
4f19785b
WSI		 2897 }
2898 *retlen = s - start;
9e24b6e2 2899 return rnv;
4f19785b 2900}
9e24b6e2
JH		 2901
2902NV
864dbfa3 2903Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 2904{
2905 register char *s = start;
9e24b6e2
JH		 2906 register NV rnv = 0.0;
2907 register UV ruv = 0;
2908 register bool overflowed = FALSE;
252aa082
JH		 2909
2910 for (; len-- && *s; s++) {
2911 if (!(*s >= '0' && *s <= '7')) {
2912 if (*s == '_')
9e24b6e2 2913 continue; /* Note: does not check for __ and the like. */
252aa082 2914 else {
f84f607d
JH		 2915 /* Allow \octal to work the DWIM way (that is, stop scanning
2916 * as soon as non-octal characters are seen, complain only iff
2917 * someone seems to want to use the digits eight and nine). */
252aa082
JH		 2918 if (*s == '8' || *s == '9') {
2919 dTHR;
627300f0
JH		 2920 if (ckWARN(WARN_DIGIT))
2921 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2922 "Illegal octal digit '%c' ignored", *s);
2923 }
2924 break;
2925 }
55497cff 2926 }
9e24b6e2 2927 if (!overflowed) {
893fe2c2 2928 register UV xuv = ruv << 3;
9e24b6e2
JH		 2929
2930 if ((xuv >> 3) != ruv) {
2931 dTHR;
2932 overflowed = TRUE;
2933 rnv = (NV) ruv;
627300f0
JH		 2934 if (ckWARN_d(WARN_OVERFLOW))
2935 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH		 2936 "Integer overflow in octal number");
2937 } else
2938 ruv = xuv | (*s - '0');
2939 }
2940 if (overflowed) {
2941 rnv *= 8.0;
2942 /* If an NV has not enough bits in its mantissa to
2943 * represent an UV this summing of small low-order numbers
2944 * is a waste of time (because the NV cannot preserve
2945 * the low-order bits anyway): we could just remember when
2946 * did we overflow and in the end just multiply rnv by the
2947 * right amount of 8-tuples. */
2948 rnv += (NV)(*s - '0');
2949 }
fe14fcc3 2950 }
9e24b6e2
JH		 2951 if (!overflowed)
2952 rnv = (NV) ruv;
893fe2c2 2953 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2954#if UVSIZE > 4
893fe2c2
JH		 2955 || (!overflowed && ruv > 0xffffffff )
2956#endif
2957 ) {
d008e5eb 2958 dTHR;
627300f0
JH		 2959 if (ckWARN(WARN_PORTABLE))
2960 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2961 "Octal number > 037777777777 non-portable");
d008e5eb 2962 }
fe14fcc3 2963 *retlen = s - start;
9e24b6e2 2964 return rnv;
fe14fcc3
LW		 2965}
2966
9e24b6e2 2967NV
864dbfa3 2968Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 2969{
2970 register char *s = start;
9e24b6e2
JH		 2971 register NV rnv = 0.0;
2972 register UV ruv = 0;
252aa082 2973 register bool seenx = FALSE;
9e24b6e2 2974 register bool overflowed = FALSE;
9e24b6e2 2975 char *hexdigit;
fe14fcc3 2976
9e24b6e2
JH		 2977 for (; len-- && *s; s++) {
2978 hexdigit = strchr((char *) PL_hexdigit, *s);
2979 if (!hexdigit) {
2980 if (*s == '_')
2981 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 2982 if (seenx == FALSE && *s == 'x' && ruv == 0) {
252aa082
JH		 2983 /* Disallow 0xxx0x0xxx... */
2984 seenx = TRUE;
252aa082
JH		 2985 continue;
2986 }
a0ed51b3 2987 else {
d008e5eb 2988 dTHR;
627300f0
JH		 2989 if (ckWARN(WARN_DIGIT))
2990 Perl_warner(aTHX_ WARN_DIGIT,
252aa082 2991 "Illegal hexadecimal digit '%c' ignored", *s);
a0ed51b3
LW		 2992 break;
2993 }
2994 }
9e24b6e2
JH		 2995 if (!overflowed) {
2996 register UV xuv = ruv << 4;
2997
2998 if ((xuv >> 4) != ruv) {
2999 dTHR;
3000 overflowed = TRUE;
3001 rnv = (NV) ruv;
627300f0
JH		 3002 if (ckWARN_d(WARN_OVERFLOW))
3003 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH		 3004 "Integer overflow in hexadecimal number");
3005 } else
3006 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3007 }
3008 if (overflowed) {
3009 rnv *= 16.0;
3010 /* If an NV has not enough bits in its mantissa to
3011 * represent an UV this summing of small low-order numbers
3012 * is a waste of time (because the NV cannot preserve
3013 * the low-order bits anyway): we could just remember when
3014 * did we overflow and in the end just multiply rnv by the
3015 * right amount of 16-tuples. */
3016 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3017 }
6ff81951 3018 }
9e24b6e2
JH		 3019 if (!overflowed)
3020 rnv = (NV) ruv;
893fe2c2 3021 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3022#if UVSIZE > 4
893fe2c2
JH		 3023 || (!overflowed && ruv > 0xffffffff )
3024#endif
3025 ) {
252aa082 3026 dTHR;
627300f0
JH		 3027 if (ckWARN(WARN_PORTABLE))
3028 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082
JH		 3029 "Hexadecimal number > 0xffffffff non-portable");
3030 }
fe14fcc3 3031 *retlen = s - start;
9e24b6e2 3032 return rnv;
fe14fcc3 3033}
760ac839 3034
491527d0 3035char*
864dbfa3 3036Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0
GS		 3037{
3038 dTHR;
3039 char *xfound = Nullch;
3040 char *xfailed = Nullch;
0f31cffe 3041 char tmpbuf[MAXPATHLEN];
491527d0
GS		 3042 register char *s;
3043 I32 len;
3044 int retval;
3045#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3046# define SEARCH_EXTS ".bat", ".cmd", NULL
3047# define MAX_EXT_LEN 4
3048#endif
3049#ifdef OS2
3050# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3051# define MAX_EXT_LEN 4
3052#endif
3053#ifdef VMS
3054# define SEARCH_EXTS ".pl", ".com", NULL
3055# define MAX_EXT_LEN 4
3056#endif
3057 /* additional extensions to try in each dir if scriptname not found */
3058#ifdef SEARCH_EXTS
3059 char *exts[] = { SEARCH_EXTS };
3060 char **ext = search_ext ? search_ext : exts;
3061 int extidx = 0, i = 0;
3062 char *curext = Nullch;
3063#else
3064# define MAX_EXT_LEN 0
3065#endif
3066
3067 /*
3068 * If dosearch is true and if scriptname does not contain path
3069 * delimiters, search the PATH for scriptname.
3070 *
3071 * If SEARCH_EXTS is also defined, will look for each
3072 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3073 * while searching the PATH.
3074 *
3075 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3076 * proceeds as follows:
3077 * If DOSISH or VMSISH:
3078 * + look for ./scriptname{,.foo,.bar}
3079 * + search the PATH for scriptname{,.foo,.bar}
3080 *
3081 * If !DOSISH:
3082 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3083 * this will not look in '.' if it's not in the PATH)
3084 */
84486fc6 3085 tmpbuf[0] = '\0';
491527d0
GS		 3086
3087#ifdef VMS
3088# ifdef ALWAYS_DEFTYPES
3089 len = strlen(scriptname);
3090 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3091 int hasdir, idx = 0, deftypes = 1;
3092 bool seen_dot = 1;
3093
3094 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3095# else
3096 if (dosearch) {
3097 int hasdir, idx = 0, deftypes = 1;
3098 bool seen_dot = 1;
3099
3100 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3101# endif
3102 /* The first time through, just add SEARCH_EXTS to whatever we
3103 * already have, so we can check for default file types. */
3104 while (deftypes ||
84486fc6 3105 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS		 3106 {
3107 if (deftypes) {
3108 deftypes = 0;
84486fc6 3109 *tmpbuf = '\0';
491527d0 3110 }
84486fc6
GS		 3111 if ((strlen(tmpbuf) + strlen(scriptname)
3112 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 3113 continue; /* don't search dir with too-long name */
84486fc6 3114 strcat(tmpbuf, scriptname);
491527d0
GS		 3115#else /* !VMS */
3116
3117#ifdef DOSISH
3118 if (strEQ(scriptname, "-"))
3119 dosearch = 0;
3120 if (dosearch) { /* Look in '.' first. */
3121 char *cur = scriptname;
3122#ifdef SEARCH_EXTS
3123 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3124 while (ext[i])
3125 if (strEQ(ext[i++],curext)) {
3126 extidx = -1; /* already has an ext */
3127 break;
3128 }
3129 do {
3130#endif
3131 DEBUG_p(PerlIO_printf(Perl_debug_log,
3132 "Looking for %s\n",cur));
017f25f1
IZ		 3133 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3134 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS		 3135 dosearch = 0;
3136 scriptname = cur;
3137#ifdef SEARCH_EXTS
3138 break;
3139#endif
3140 }
3141#ifdef SEARCH_EXTS
3142 if (cur == scriptname) {
3143 len = strlen(scriptname);
84486fc6 3144 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 3145 break;
84486fc6 3146 cur = strcpy(tmpbuf, scriptname);
491527d0
GS		 3147 }
3148 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 3149 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS		 3150#endif
3151 }
3152#endif
3153
cd39f2b6
JH		 3154#ifdef MACOS_TRADITIONAL
3155 if (dosearch && !strchr(scriptname, ':') &&
3156 (s = PerlEnv_getenv("Commands")))
3157#else
491527d0
GS		 3158 if (dosearch && !strchr(scriptname, '/')
3159#ifdef DOSISH
3160 && !strchr(scriptname, '\\')
3161#endif
cd39f2b6
JH		 3162 && (s = PerlEnv_getenv("PATH")))
3163#endif
3164 {
491527d0
GS		 3165 bool seen_dot = 0;
3166
3280af22
NIS		 3167 PL_bufend = s + strlen(s);
3168 while (s < PL_bufend) {
cd39f2b6
JH		 3169#ifdef MACOS_TRADITIONAL
3170 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3171 ',',
3172 &len);
3173#else
491527d0
GS		 3174#if defined(atarist) || defined(DOSISH)
3175 for (len = 0; *s
3176# ifdef atarist
3177 && *s != ','
3178# endif
3179 && *s != ';'; len++, s++) {
84486fc6
GS		 3180 if (len < sizeof tmpbuf)
3181 tmpbuf[len] = *s;
491527d0 3182 }
84486fc6
GS		 3183 if (len < sizeof tmpbuf)
3184 tmpbuf[len] = '\0';
491527d0 3185#else /* ! (atarist || DOSISH) */
3280af22 3186 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS		 3187 ':',
3188 &len);
3189#endif /* ! (atarist || DOSISH) */
cd39f2b6 3190#endif /* MACOS_TRADITIONAL */
3280af22 3191 if (s < PL_bufend)
491527d0 3192 s++;
84486fc6 3193 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0 3194 continue; /* don't search dir with too-long name */
cd39f2b6
JH		 3195#ifdef MACOS_TRADITIONAL
3196 if (len && tmpbuf[len - 1] != ':')
3197 tmpbuf[len++] = ':';
3198#else
491527d0 3199 if (len
61ae2fbf 3200#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS		 3201 && tmpbuf[len - 1] != '/'
3202 && tmpbuf[len - 1] != '\\'
491527d0
GS		 3203#endif
3204 )
84486fc6
GS		 3205 tmpbuf[len++] = '/';
3206 if (len == 2 && tmpbuf[0] == '.')
491527d0 3207 seen_dot = 1;
cd39f2b6 3208#endif
84486fc6 3209 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS		 3210#endif /* !VMS */
3211
3212#ifdef SEARCH_EXTS
84486fc6 3213 len = strlen(tmpbuf);
491527d0
GS		 3214 if (extidx > 0) /* reset after previous loop */
3215 extidx = 0;
3216 do {
3217#endif
84486fc6 3218 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3219 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ		 3220 if (S_ISDIR(PL_statbuf.st_mode)) {
3221 retval = -1;
3222 }
491527d0
GS		 3223#ifdef SEARCH_EXTS
3224 } while ( retval < 0 /* not there */
3225 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3226 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS		 3227 );
3228#endif
3229 if (retval < 0)
3230 continue;
3280af22
NIS		 3231 if (S_ISREG(PL_statbuf.st_mode)
3232 && cando(S_IRUSR,TRUE,&PL_statbuf)
cd39f2b6 3233#if !defined(DOSISH) && !defined(MACOS_TRDITIONAL)
3280af22 3234 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS		 3235#endif
3236 )
3237 {
84486fc6 3238 xfound = tmpbuf; /* bingo! */
491527d0
GS		 3239 break;
3240 }
3241 if (!xfailed)
84486fc6 3242 xfailed = savepv(tmpbuf);
491527d0
GS		 3243 }
3244#ifndef DOSISH
017f25f1
IZ		 3245 if (!xfound && !seen_dot && !xfailed &&
3246 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3247 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS		 3248#endif
3249 seen_dot = 1; /* Disable message. */
9ccb31f9
GS		 3250 if (!xfound) {
3251 if (flags & 1) { /* do or die? */
cea2e8a9 3252 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS		 3253 (xfailed ? "execute" : "find"),
3254 (xfailed ? xfailed : scriptname),
3255 (xfailed ? "" : " on PATH"),
3256 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3257 }
3258 scriptname = Nullch;
3259 }
491527d0
GS		 3260 if (xfailed)
3261 Safefree(xfailed);
3262 scriptname = xfound;
3263 }
9ccb31f9 3264 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS		 3265}
3266
3267
11343788 3268#ifdef USE_THREADS
12ca11f6
MB		 3269#ifdef FAKE_THREADS
3270/* Very simplistic scheduler for now */
3271void
3272schedule(void)
3273{
c7848ba1 3274 thr = thr->i.next_run;
12ca11f6
MB		 3275}
3276
3277void
864dbfa3 3278Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB		 3279{
3280 *cp = 0;
3281}
3282
3283void
864dbfa3 3284Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3285{
51dd5992 3286 perl_os_thread t;
12ca11f6
MB		 3287 perl_cond cond = *cp;
3288
3289 if (!cond)
3290 return;
3291 t = cond->thread;
3292 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3293 t->i.next_run = thr->i.next_run;
3294 thr->i.next_run->i.prev_run = t;
3295 t->i.prev_run = thr;
3296 thr->i.next_run = t;
3297 thr->i.wait_queue = 0;
12ca11f6
MB		 3298 /* Remove from the wait queue */
3299 *cp = cond->next;
3300 Safefree(cond);
3301}
3302
3303void
864dbfa3 3304Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3305{
51dd5992 3306 perl_os_thread t;
12ca11f6
MB		 3307 perl_cond cond, cond_next;
3308
3309 for (cond = *cp; cond; cond = cond_next) {
3310 t = cond->thread;
3311 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3312 t->i.next_run = thr->i.next_run;
3313 thr->i.next_run->i.prev_run = t;
3314 t->i.prev_run = thr;
3315 thr->i.next_run = t;
3316 thr->i.wait_queue = 0;
12ca11f6
MB		 3317 /* Remove from the wait queue */
3318 cond_next = cond->next;
3319 Safefree(cond);
3320 }
3321 *cp = 0;
3322}
3323
3324void
864dbfa3 3325Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB		 3326{
3327 perl_cond cond;
3328
c7848ba1 3329 if (thr->i.next_run == thr)
cea2e8a9 3330 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
12ca11f6 3331
0f15f207 3332 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB		 3333 cond->thread = thr;
3334 cond->next = *cp;
3335 *cp = cond;
c7848ba1 3336 thr->i.wait_queue = cond;
12ca11f6 3337 /* Remove ourselves from runnable queue */
c7848ba1
MB		 3338 thr->i.next_run->i.prev_run = thr->i.prev_run;
3339 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB		 3340}
3341#endif /* FAKE_THREADS */
3342
0d85d877 3343#ifdef PTHREAD_GETSPECIFIC_INT
52e1cb5e 3344struct perl_thread *
864dbfa3 3345Perl_getTHR(pTHX)
11343788
MB		 3346{
3347 pthread_addr_t t;
3348
6b88bc9c 3349 if (pthread_getspecific(PL_thr_key, &t))
cea2e8a9 3350 Perl_croak(aTHX_ "panic: pthread_getspecific");
52e1cb5e 3351 return (struct perl_thread *) t;
11343788 3352}
0d85d877 3353#endif
f93b4edd
MB		 3354
3355MAGIC *
864dbfa3 3356Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB		 3357{
3358 MAGIC *mg;
3359
3360 SvUPGRADE(sv, SVt_PVMG);
3361 mg = mg_find(sv, 'm');
3362 if (!mg) {
3363 condpair_t *cp;
3364
3365 New(53, cp, 1, condpair_t);
3366 MUTEX_INIT(&cp->mutex);
3367 COND_INIT(&cp->owner_cond);
3368 COND_INIT(&cp->cond);
3369 cp->owner = 0;
28a8573f 3370 MUTEX_LOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB		 3371 mg = mg_find(sv, 'm');
3372 if (mg) {
3373 /* someone else beat us to initialising it */
28a8573f 3374 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB		 3375 MUTEX_DESTROY(&cp->mutex);
3376 COND_DESTROY(&cp->owner_cond);
3377 COND_DESTROY(&cp->cond);
3378 Safefree(cp);
3379 }
3380 else {
3381 sv_magic(sv, Nullsv, 'm', 0, 0);
3382 mg = SvMAGIC(sv);
3383 mg->mg_ptr = (char *)cp;
565764a8 3384 mg->mg_len = sizeof(cp);
28a8573f 3385 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
bf49b057 3386 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
c7848ba1 3387 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB		 3388 }
3389 }
3390 return mg;
3391}
a863c7d1
MB		 3392
3393/*
199100c8
MB		 3394 * Make a new perl thread structure using t as a prototype. Some of the
3395 * fields for the new thread are copied from the prototype thread, t,
3396 * so t should not be running in perl at the time this function is
3397 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3398 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3399 */
52e1cb5e 3400struct perl_thread *
864dbfa3 3401Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3402{
c5be433b 3403#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3404 struct perl_thread *thr;
cea2e8a9 3405#endif
a863c7d1 3406 SV *sv;
199100c8
MB		 3407 SV **svp;
3408 I32 i;
3409
79cb57f6 3410 sv = newSVpvn("", 0);
52e1cb5e
JH		 3411 SvGROW(sv, sizeof(struct perl_thread) + 1);
3412 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3413 thr = (Thread) SvPVX(sv);
949ced2d 3414#ifdef DEBUGGING
52e1cb5e 3415 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS		 3416 PL_markstack = 0;
3417 PL_scopestack = 0;
3418 PL_savestack = 0;
3419 PL_retstack = 0;
3420 PL_dirty = 0;
3421 PL_localizing = 0;
949ced2d
GS		 3422 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3423#else
3424 Zero(thr, 1, struct perl_thread);
3425#endif
199100c8 3426
0b94c7bb 3427 PL_protect = MEMBER_TO_FPTR(Perl_default_protect);
312caa8e 3428
199100c8 3429 thr->oursv = sv;
cea2e8a9 3430 init_stacks();
a863c7d1 3431
533c011a 3432 PL_curcop = &PL_compiling;
c5be433b 3433 thr->interp = t->interp;
199100c8 3434 thr->cvcache = newHV();
54b9620d 3435 thr->threadsv = newAV();
a863c7d1 3436 thr->specific = newAV();
79cb57f6 3437 thr->errsv = newSVpvn("", 0);
a863c7d1
MB		 3438 thr->flags = THRf_R_JOINABLE;
3439 MUTEX_INIT(&thr->mutex);
199100c8 3440
d55594ae
GS		 3441 /* top_env needs to be non-zero. It points to an area
3442 in which longjmp() stuff is stored, as C callstack
3443 info there at least is thread specific this has to
3444 be per-thread. Otherwise a 'die' in a thread gives
3445 that thread the C stack of last thread to do an eval {}!
3446 See comments in scope.h
3447 Initialize top entry (as in perl.c for main thread)
3448 */
533c011a
NIS		 3449 PL_start_env.je_prev = NULL;
3450 PL_start_env.je_ret = -1;
3451 PL_start_env.je_mustcatch = TRUE;
3452 PL_top_env = &PL_start_env;
3453
faef0170 3454 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
533c011a
NIS		 3455 PL_restartop = 0;
3456
b099ddc0 3457 PL_statname = NEWSV(66,0);
5a844595 3458 PL_errors = newSVpvn("", 0);
b099ddc0 3459 PL_maxscream = -1;
0b94c7bb
GS		 3460 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3461 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3462 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3463 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3464 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
b099ddc0
GS		 3465 PL_regindent = 0;
3466 PL_reginterp_cnt = 0;
3467 PL_lastscream = Nullsv;
3468 PL_screamfirst = 0;
3469 PL_screamnext = 0;
3470 PL_reg_start_tmp = 0;
3471 PL_reg_start_tmpl = 0;
14ed4b74 3472 PL_reg_poscache = Nullch;
b099ddc0
GS		 3473
3474 /* parent thread's data needs to be locked while we make copy */
3475 MUTEX_LOCK(&t->mutex);
3476
312caa8e
CS		 3477 PL_protect = t->Tprotect;
3478
b099ddc0
GS		 3479 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3480 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3481 PL_curstash = t->Tcurstash; /* always be set to main? */
3482
6b88bc9c 3483 PL_tainted = t->Ttainted;
84fee439
NIS		 3484 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3485 PL_nrs = newSVsv(t->Tnrs);
3486 PL_rs = SvREFCNT_inc(PL_nrs);
3487 PL_last_in_gv = Nullgv;
3488 PL_ofslen = t->Tofslen;
3489 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3490 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3491 PL_chopset = t->Tchopset;
3492 PL_formtarget = newSVsv(t->Tformtarget);
3493 PL_bodytarget = newSVsv(t->Tbodytarget);
3494 PL_toptarget = newSVsv(t->Ttoptarget);
533c011a 3495
54b9620d
MB		 3496 /* Initialise all per-thread SVs that the template thread used */
3497 svp = AvARRAY(t->threadsv);
93965878 3498 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 3499 if (*svp && *svp != &PL_sv_undef) {
199100c8 3500 SV *sv = newSVsv(*svp);
54b9620d 3501 av_store(thr->threadsv, i, sv);
533c011a 3502 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
bf49b057 3503 DEBUG_S(PerlIO_printf(Perl_debug_log,
54b9620d 3504 "new_struct_thread: copied threadsv %d %p->%p\n",i, t, thr));
199100c8
MB		 3505 }
3506 }
940cb80d 3507 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 3508
533c011a
NIS		 3509 MUTEX_LOCK(&PL_threads_mutex);
3510 PL_nthreads++;
3511 thr->tid = ++PL_threadnum;
199100c8
MB		 3512 thr->next = t->next;
3513 thr->prev = t;
3514 t->next = thr;
3515 thr->next->prev = thr;
533c011a 3516 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 3517
b099ddc0
GS		 3518 /* done copying parent's state */
3519 MUTEX_UNLOCK(&t->mutex);
3520
a863c7d1 3521#ifdef HAVE_THREAD_INTERN
4f63d024 3522 Perl_init_thread_intern(thr);
a863c7d1 3523#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB		 3524 return thr;
3525}
11343788 3526#endif /* USE_THREADS */
760ac839
LW		 3527
3528#ifdef HUGE_VAL
3529/*
3530 * This hack is to force load of "huge" support from libm.a
3531 * So it is in perl for (say) POSIX to use.
3532 * Needed for SunOS with Sun's 'acc' for example.
3533 */
65202027 3534NV
8ac85365 3535Perl_huge(void)
760ac839
LW		 3536{
3537 return HUGE_VAL;
3538}
3539#endif
4e35701f 3540
22239a37
NIS		 3541#ifdef PERL_GLOBAL_STRUCT
3542struct perl_vars *
864dbfa3 3543Perl_GetVars(pTHX)
22239a37 3544{
533c011a 3545 return &PL_Vars;
22239a37 3546}
31fb1209
NIS		 3547#endif
3548
3549char **
864dbfa3 3550Perl_get_op_names(pTHX)
31fb1209 3551{
22c35a8c 3552 return PL_op_name;
31fb1209
NIS		 3553}
3554
3555char **
864dbfa3 3556Perl_get_op_descs(pTHX)
31fb1209 3557{
22c35a8c 3558 return PL_op_desc;
31fb1209 3559}
9e6b2b00
GS		 3560
3561char *
864dbfa3 3562Perl_get_no_modify(pTHX)
9e6b2b00 3563{
22c35a8c 3564 return (char*)PL_no_modify;
9e6b2b00
GS		 3565}
3566
3567U32 *
864dbfa3 3568Perl_get_opargs(pTHX)
9e6b2b00 3569{
22c35a8c 3570 return PL_opargs;
9e6b2b00 3571}
51aa15f3 3572
0cb96387
GS		 3573PPADDR_t*
3574Perl_get_ppaddr(pTHX)
3575{
3576 return &PL_ppaddr;
3577}
3578
a6c40364
GS		 3579#ifndef HAS_GETENV_LEN
3580char *
864dbfa3 3581Perl_getenv_len(pTHX_ char *env_elem, unsigned long *len)
a6c40364
GS		 3582{
3583 char *env_trans = PerlEnv_getenv(env_elem);
3584 if (env_trans)
3585 *len = strlen(env_trans);
3586 return env_trans;
f675dbe5
CB		 3587}
3588#endif
3589
dc9e4912
GS		 3590
3591MGVTBL*
864dbfa3 3592Perl_get_vtbl(pTHX_ int vtbl_id)
dc9e4912
GS		 3593{
3594 MGVTBL* result = Null(MGVTBL*);
3595
3596 switch(vtbl_id) {
3597 case want_vtbl_sv:
3598 result = &PL_vtbl_sv;
3599 break;
3600 case want_vtbl_env:
3601 result = &PL_vtbl_env;
3602 break;
3603 case want_vtbl_envelem:
3604 result = &PL_vtbl_envelem;
3605 break;
3606 case want_vtbl_sig:
3607 result = &PL_vtbl_sig;
3608 break;
3609 case want_vtbl_sigelem:
3610 result = &PL_vtbl_sigelem;
3611 break;
3612 case want_vtbl_pack:
3613 result = &PL_vtbl_pack;
3614 break;
3615 case want_vtbl_packelem:
3616 result = &PL_vtbl_packelem;
3617 break;
3618 case want_vtbl_dbline:
3619 result = &PL_vtbl_dbline;
3620 break;
3621 case want_vtbl_isa:
3622 result = &PL_vtbl_isa;
3623 break;
3624 case want_vtbl_isaelem:
3625 result = &PL_vtbl_isaelem;
3626 break;
3627 case want_vtbl_arylen:
3628 result = &PL_vtbl_arylen;
3629 break;
3630 case want_vtbl_glob:
3631 result = &PL_vtbl_glob;
3632 break;
3633 case want_vtbl_mglob:
3634 result = &PL_vtbl_mglob;
3635 break;
3636 case want_vtbl_nkeys:
3637 result = &PL_vtbl_nkeys;
3638 break;
3639 case want_vtbl_taint:
3640 result = &PL_vtbl_taint;
3641 break;
3642 case want_vtbl_substr:
3643 result = &PL_vtbl_substr;
3644 break;
3645 case want_vtbl_vec:
3646 result = &PL_vtbl_vec;
3647 break;
3648 case want_vtbl_pos:
3649 result = &PL_vtbl_pos;
3650 break;
3651 case want_vtbl_bm:
3652 result = &PL_vtbl_bm;
3653 break;
3654 case want_vtbl_fm:
3655 result = &PL_vtbl_fm;
3656 break;
3657 case want_vtbl_uvar:
3658 result = &PL_vtbl_uvar;
3659 break;
3660#ifdef USE_THREADS
3661 case want_vtbl_mutex:
3662 result = &PL_vtbl_mutex;
3663 break;
3664#endif
3665 case want_vtbl_defelem:
3666 result = &PL_vtbl_defelem;
3667 break;
3668 case want_vtbl_regexp:
3669 result = &PL_vtbl_regexp;
3670 break;
3671 case want_vtbl_regdata:
3672 result = &PL_vtbl_regdata;
3673 break;
3674 case want_vtbl_regdatum:
3675 result = &PL_vtbl_regdatum;
3676 break;
3c90161d 3677#ifdef USE_LOCALE_COLLATE
dc9e4912
GS		 3678 case want_vtbl_collxfrm:
3679 result = &PL_vtbl_collxfrm;
3680 break;
3c90161d 3681#endif
dc9e4912
GS		 3682 case want_vtbl_amagic:
3683 result = &PL_vtbl_amagic;
3684 break;
3685 case want_vtbl_amagicelem:
3686 result = &PL_vtbl_amagicelem;
3687 break;
810b8aa5
GS		 3688 case want_vtbl_backref:
3689 result = &PL_vtbl_backref;
3690 break;
dc9e4912
GS		 3691 }
3692 return result;
3693}
3694
767df6a1 3695I32
864dbfa3 3696Perl_my_fflush_all(pTHX)
767df6a1
JH		 3697{
3698#ifdef FFLUSH_NULL
ce720889 3699 return PerlIO_flush(NULL);
767df6a1
JH		 3700#else
3701 long open_max = -1;
ed39a0f2 3702# if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
d2201af2
AD		 3703# ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3704 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3705# else
767df6a1
JH		 3706# if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3707 open_max = sysconf(_SC_OPEN_MAX);
3708# else
3709# ifdef FOPEN_MAX
d2201af2 3710 open_max = FOPEN_MAX;
767df6a1
JH		 3711# else
3712# ifdef OPEN_MAX
d2201af2 3713 open_max = OPEN_MAX;
767df6a1
JH		 3714# else
3715# ifdef _NFILE
d2201af2 3716 open_max = _NFILE;
767df6a1
JH		 3717# endif
3718# endif
3719# endif
3720# endif
d2201af2 3721# endif
767df6a1
JH		 3722 if (open_max > 0) {
3723 long i;
3724 for (i = 0; i < open_max; i++)
d2201af2
AD		 3725 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3726 STDIO_STREAM_ARRAY[i]._file < open_max &&
3727 STDIO_STREAM_ARRAY[i]._flag)
3728 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
767df6a1
JH		 3729 return 0;
3730 }
3731# endif
3732 SETERRNO(EBADF,RMS$_IFI);
3733 return EOF;
3734#endif
3735}
097ee67d 3736
65202027 3737NV
5b877257 3738Perl_my_atof(pTHX_ const char* s) {
097ee67d 3739#ifdef USE_LOCALE_NUMERIC
d43ce814 3740 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
65202027 3741 NV x, y;
097ee67d 3742
65202027 3743 x = Perl_atof(s);
097ee67d 3744 SET_NUMERIC_STANDARD();
65202027 3745 y = Perl_atof(s);
097ee67d
JH		 3746 SET_NUMERIC_LOCAL();
3747 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3748 return y;
3749 return x;
65202027
DS		 3750 }
3751 else
3752 return Perl_atof(s);
097ee67d 3753#else
65202027 3754 return Perl_atof(s);
097ee67d
JH		 3755#endif
3756}
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