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[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
PP
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
PP
50#ifdef I_SYS_WAIT
51# include <sys/wait.h>
52#endif
53
097ee67d
JH
54#ifdef I_LOCALE
55# include <locale.h>
56#endif
57
8d063cd8 58#define FLUSH
8d063cd8 59
a0d0e21e 60#ifdef LEAKTEST
a0d0e21e 61
8c52afec
IZ
62long xcount[MAXXCOUNT];
63long lastxcount[MAXXCOUNT];
64long xycount[MAXXCOUNT][MAXYCOUNT];
65long lastxycount[MAXXCOUNT][MAXYCOUNT];
66
a0d0e21e 67#endif
a863c7d1 68
16cebae2
GS
69#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
70# define FD_CLOEXEC 1 /* NeXT needs this */
71#endif
72
f2517201 73/* paranoid version of system's malloc() */
8d063cd8 74
a687059c
LW
75/* NOTE: Do not call the next three routines directly. Use the macros
76 * in handy.h, so that we can easily redefine everything to do tracking of
77 * allocated hunks back to the original New to track down any memory leaks.
20cec16a 78 * XXX This advice seems to be widely ignored :-( --AD August 1996.
a687059c
LW
79 */
80
bd4080b3 81Malloc_t
4f63d024 82Perl_safesysmalloc(MEM_SIZE size)
8d063cd8 83{
bd4080b3 84 Malloc_t ptr;
55497cff 85#ifdef HAS_64K_LIMIT
62b28dd9 86 if (size > 0xffff) {
16cebae2
GS
87 PerlIO_printf(PerlIO_stderr(),
88 "Allocation too large: %lx\n", size) FLUSH;
89 WITH_THX(my_exit(1));
62b28dd9 90 }
55497cff 91#endif /* HAS_64K_LIMIT */
34de22dd
LW
92#ifdef DEBUGGING
93 if ((long)size < 0)
4f63d024 94 Perl_croak_nocontext("panic: malloc");
34de22dd 95#endif
6ad3d225 96 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
79072805 97#if !(defined(I286) || defined(atarist))
3280af22 98 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) malloc %ld bytes\n",ptr,PL_an++,(long)size));
79072805 99#else
6b88bc9c 100 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) malloc %ld bytes\n",ptr,PL_an++,(long)size));
8d063cd8
LW
101#endif
102 if (ptr != Nullch)
103 return ptr;
3280af22 104 else if (PL_nomemok)
7c0587c8 105 return Nullch;
8d063cd8 106 else {
22c35a8c 107 PerlIO_puts(PerlIO_stderr(),PL_no_mem) FLUSH;
4f63d024 108 WITH_THX(my_exit(1));
4e35701f 109 return Nullch;
8d063cd8
LW
110 }
111 /*NOTREACHED*/
112}
113
f2517201 114/* paranoid version of system's realloc() */
8d063cd8 115
bd4080b3 116Malloc_t
4f63d024 117Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 118{
bd4080b3 119 Malloc_t ptr;
ecfc5424 120#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
6ad3d225 121 Malloc_t PerlMem_realloc();
ecfc5424 122#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 123
55497cff 124#ifdef HAS_64K_LIMIT
5f05dabc
PP
125 if (size > 0xffff) {
126 PerlIO_printf(PerlIO_stderr(),
127 "Reallocation too large: %lx\n", size) FLUSH;
4f63d024 128 WITH_THX(my_exit(1));
5f05dabc 129 }
55497cff 130#endif /* HAS_64K_LIMIT */
7614df0c 131 if (!size) {
f2517201 132 safesysfree(where);
7614df0c
JD
133 return NULL;
134 }
135
378cc40b 136 if (!where)
f2517201 137 return safesysmalloc(size);
34de22dd
LW
138#ifdef DEBUGGING
139 if ((long)size < 0)
4f63d024 140 Perl_croak_nocontext("panic: realloc");
34de22dd 141#endif
7614df0c 142 ptr = PerlMem_realloc(where,size);
79072805
LW
143
144#if !(defined(I286) || defined(atarist))
145 DEBUG_m( {
3280af22
NIS
146 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) rfree\n",where,PL_an++);
147 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) realloc %ld bytes\n",ptr,PL_an++,(long)size);
79072805
LW
148 } )
149#else
150 DEBUG_m( {
6b88bc9c
GS
151 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) rfree\n",where,PL_an++);
152 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) realloc %ld bytes\n",ptr,PL_an++,(long)size);
79072805 153 } )
8d063cd8 154#endif
79072805 155
8d063cd8
LW
156 if (ptr != Nullch)
157 return ptr;
3280af22 158 else if (PL_nomemok)
7c0587c8 159 return Nullch;
8d063cd8 160 else {
22c35a8c 161 PerlIO_puts(PerlIO_stderr(),PL_no_mem) FLUSH;
4f63d024 162 WITH_THX(my_exit(1));
4e35701f 163 return Nullch;
8d063cd8
LW
164 }
165 /*NOTREACHED*/
166}
167
f2517201 168/* safe version of system's free() */
8d063cd8 169
54310121 170Free_t
4f63d024 171Perl_safesysfree(Malloc_t where)
8d063cd8 172{
79072805 173#if !(defined(I286) || defined(atarist))
3280af22 174 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%x: (%05d) free\n",(char *) where,PL_an++));
79072805 175#else
6b88bc9c 176 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) free\n",(char *) where,PL_an++));
8d063cd8 177#endif
378cc40b 178 if (where) {
de3bb511 179 /*SUPPRESS 701*/
6ad3d225 180 PerlMem_free(where);
378cc40b 181 }
8d063cd8
LW
182}
183
f2517201 184/* safe version of system's calloc() */
1050c9ca 185
bd4080b3 186Malloc_t
4f63d024 187Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 188{
bd4080b3 189 Malloc_t ptr;
1050c9ca 190
55497cff 191#ifdef HAS_64K_LIMIT
5f05dabc
PP
192 if (size * count > 0xffff) {
193 PerlIO_printf(PerlIO_stderr(),
194 "Allocation too large: %lx\n", size * count) FLUSH;
4f63d024 195 WITH_THX(my_exit(1));
5f05dabc 196 }
55497cff 197#endif /* HAS_64K_LIMIT */
1050c9ca
PP
198#ifdef DEBUGGING
199 if ((long)size < 0 || (long)count < 0)
4f63d024 200 Perl_croak_nocontext("panic: calloc");
1050c9ca 201#endif
0b7c1c42 202 size *= count;
6ad3d225 203 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
1050c9ca 204#if !(defined(I286) || defined(atarist))
3280af22 205 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) calloc %ld x %ld bytes\n",ptr,PL_an++,(long)count,(long)size));
1050c9ca 206#else
6b88bc9c 207 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) calloc %ld x %ld bytes\n",ptr,PL_an++,(long)count,(long)size));
1050c9ca 208#endif
1050c9ca
PP
209 if (ptr != Nullch) {
210 memset((void*)ptr, 0, size);
211 return ptr;
212 }
3280af22 213 else if (PL_nomemok)
1050c9ca
PP
214 return Nullch;
215 else {
22c35a8c 216 PerlIO_puts(PerlIO_stderr(),PL_no_mem) FLUSH;
4f63d024 217 WITH_THX(my_exit(1));
4e35701f 218 return Nullch;
1050c9ca
PP
219 }
220 /*NOTREACHED*/
221}
222
a687059c
LW
223#ifdef LEAKTEST
224
8c52afec
IZ
225struct mem_test_strut {
226 union {
227 long type;
228 char c[2];
229 } u;
230 long size;
231};
232
233# define ALIGN sizeof(struct mem_test_strut)
234
235# define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
236# define typeof_chunk(ch) \
237 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
238# define set_typeof_chunk(ch,t) \
239 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
240#define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
241 ? MAXYCOUNT - 1 \
242 : ( (size) > 40 \
243 ? ((size) - 1)/8 + 5 \
244 : ((size) - 1)/4))
8d063cd8 245
bd4080b3 246Malloc_t
4f63d024 247Perl_safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 248{
8c52afec 249 register char* where = (char*)safemalloc(size + ALIGN);
8d063cd8 250
8c52afec
IZ
251 xcount[x] += size;
252 xycount[x][SIZE_TO_Y(size)]++;
253 set_typeof_chunk(where, x);
254 sizeof_chunk(where) = size;
255 return (Malloc_t)(where + ALIGN);
8d063cd8 256}
8d063cd8 257
bd4080b3 258Malloc_t
4f63d024 259Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
a687059c 260{
8c52afec
IZ
261 char *where = (char*)wh;
262
263 if (!wh)
264 return safexmalloc(0,size);
265
266 {
267 MEM_SIZE old = sizeof_chunk(where - ALIGN);
268 int t = typeof_chunk(where - ALIGN);
269 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
270
271 xycount[t][SIZE_TO_Y(old)]--;
272 xycount[t][SIZE_TO_Y(size)]++;
273 xcount[t] += size - old;
274 sizeof_chunk(new) = size;
275 return (Malloc_t)(new + ALIGN);
276 }
a687059c
LW
277}
278
279void
4f63d024 280Perl_safexfree(Malloc_t wh)
a687059c 281{
79072805 282 I32 x;
8c52afec
IZ
283 char *where = (char*)wh;
284 MEM_SIZE size;
285
a687059c
LW
286 if (!where)
287 return;
288 where -= ALIGN;
8c52afec 289 size = sizeof_chunk(where);
a687059c 290 x = where[0] + 100 * where[1];
8c52afec
IZ
291 xcount[x] -= size;
292 xycount[x][SIZE_TO_Y(size)]--;
a687059c
LW
293 safefree(where);
294}
295
bd4080b3 296Malloc_t
4f63d024 297Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 298{
8c52afec
IZ
299 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
300 xcount[x] += size;
301 xycount[x][SIZE_TO_Y(size)]++;
302 memset((void*)(where + ALIGN), 0, size * count);
303 set_typeof_chunk(where, x);
304 sizeof_chunk(where) = size;
305 return (Malloc_t)(where + ALIGN);
1050c9ca
PP
306}
307
864dbfa3 308STATIC void
cea2e8a9 309S_xstat(pTHX_ int flag)
8d063cd8 310{
8c52afec
IZ
311 register I32 i, j, total = 0;
312 I32 subtot[MAXYCOUNT];
8d063cd8 313
8c52afec
IZ
314 for (j = 0; j < MAXYCOUNT; j++) {
315 subtot[j] = 0;
316 }
317
318 PerlIO_printf(PerlIO_stderr(), " Id subtot 4 8 12 16 20 24 28 32 36 40 48 56 64 72 80 80+\n", total);
a687059c 319 for (i = 0; i < MAXXCOUNT; i++) {
8c52afec
IZ
320 total += xcount[i];
321 for (j = 0; j < MAXYCOUNT; j++) {
322 subtot[j] += xycount[i][j];
323 }
324 if (flag == 0
325 ? xcount[i] /* Have something */
326 : (flag == 2
327 ? xcount[i] != lastxcount[i] /* Changed */
328 : xcount[i] > lastxcount[i])) { /* Growed */
329 PerlIO_printf(PerlIO_stderr(),"%2d %02d %7ld ", i / 100, i % 100,
330 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
a687059c 331 lastxcount[i] = xcount[i];
8c52afec
IZ
332 for (j = 0; j < MAXYCOUNT; j++) {
333 if ( flag == 0
334 ? xycount[i][j] /* Have something */
335 : (flag == 2
336 ? xycount[i][j] != lastxycount[i][j] /* Changed */
337 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
338 PerlIO_printf(PerlIO_stderr(),"%3ld ",
339 flag == 2
340 ? xycount[i][j] - lastxycount[i][j]
341 : xycount[i][j]);
342 lastxycount[i][j] = xycount[i][j];
343 } else {
344 PerlIO_printf(PerlIO_stderr(), " . ", xycount[i][j]);
345 }
346 }
347 PerlIO_printf(PerlIO_stderr(), "\n");
348 }
349 }
350 if (flag != 2) {
351 PerlIO_printf(PerlIO_stderr(), "Total %7ld ", total);
352 for (j = 0; j < MAXYCOUNT; j++) {
353 if (subtot[j]) {
354 PerlIO_printf(PerlIO_stderr(), "%3ld ", subtot[j]);
355 } else {
356 PerlIO_printf(PerlIO_stderr(), " . ");
357 }
8d063cd8 358 }
8c52afec 359 PerlIO_printf(PerlIO_stderr(), "\n");
8d063cd8 360 }
8d063cd8 361}
a687059c
LW
362
363#endif /* LEAKTEST */
8d063cd8
LW
364
365/* copy a string up to some (non-backslashed) delimiter, if any */
366
367char *
864dbfa3 368Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 369{
fc36a67e
PP
370 register I32 tolen;
371 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW
372 if (*from == '\\') {
373 if (from[1] == delim)
374 from++;
fc36a67e
PP
375 else {
376 if (to < toend)
377 *to++ = *from;
378 tolen++;
379 from++;
380 }
378cc40b 381 }
bedebaa5 382 else if (*from == delim)
8d063cd8 383 break;
fc36a67e
PP
384 if (to < toend)
385 *to++ = *from;
8d063cd8 386 }
bedebaa5
CS
387 if (to < toend)
388 *to = '\0';
fc36a67e 389 *retlen = tolen;
8d063cd8
LW
390 return from;
391}
392
393/* return ptr to little string in big string, NULL if not found */
378cc40b 394/* This routine was donated by Corey Satten. */
8d063cd8
LW
395
396char *
864dbfa3 397Perl_instr(pTHX_ register const char *big, register const char *little)
378cc40b 398{
08105a92 399 register const char *s, *x;
79072805 400 register I32 first;
378cc40b 401
a687059c 402 if (!little)
08105a92 403 return (char*)big;
a687059c 404 first = *little++;
378cc40b 405 if (!first)
08105a92 406 return (char*)big;
378cc40b
LW
407 while (*big) {
408 if (*big++ != first)
409 continue;
410 for (x=big,s=little; *s; /**/ ) {
411 if (!*x)
412 return Nullch;
413 if (*s++ != *x++) {
414 s--;
415 break;
416 }
417 }
418 if (!*s)
08105a92 419 return (char*)(big-1);
378cc40b
LW
420 }
421 return Nullch;
422}
8d063cd8 423
a687059c
LW
424/* same as instr but allow embedded nulls */
425
426char *
864dbfa3 427Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
8d063cd8 428{
08105a92 429 register const char *s, *x;
79072805 430 register I32 first = *little;
08105a92 431 register const char *littleend = lend;
378cc40b 432
a0d0e21e 433 if (!first && little >= littleend)
08105a92 434 return (char*)big;
de3bb511
LW
435 if (bigend - big < littleend - little)
436 return Nullch;
a687059c
LW
437 bigend -= littleend - little++;
438 while (big <= bigend) {
439 if (*big++ != first)
440 continue;
441 for (x=big,s=little; s < littleend; /**/ ) {
442 if (*s++ != *x++) {
443 s--;
444 break;
445 }
446 }
447 if (s >= littleend)
08105a92 448 return (char*)(big-1);
378cc40b 449 }
a687059c
LW
450 return Nullch;
451}
452
453/* reverse of the above--find last substring */
454
455char *
864dbfa3 456Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
a687059c 457{
08105a92
GS
458 register const char *bigbeg;
459 register const char *s, *x;
79072805 460 register I32 first = *little;
08105a92 461 register const char *littleend = lend;
a687059c 462
a0d0e21e 463 if (!first && little >= littleend)
08105a92 464 return (char*)bigend;
a687059c
LW
465 bigbeg = big;
466 big = bigend - (littleend - little++);
467 while (big >= bigbeg) {
468 if (*big-- != first)
469 continue;
470 for (x=big+2,s=little; s < littleend; /**/ ) {
471 if (*s++ != *x++) {
472 s--;
473 break;
474 }
475 }
476 if (s >= littleend)
08105a92 477 return (char*)(big+1);
378cc40b 478 }
a687059c 479 return Nullch;
378cc40b 480}
a687059c 481
bbce6d69
PP
482/*
483 * Set up for a new ctype locale.
484 */
55497cff 485void
864dbfa3 486Perl_new_ctype(pTHX_ const char *newctype)
ef7eada9 487{
36477c24
PP
488#ifdef USE_LOCALE_CTYPE
489
bbce6d69 490 int i;
ef7eada9 491
bbce6d69
PP
492 for (i = 0; i < 256; i++) {
493 if (isUPPER_LC(i))
22c35a8c 494 PL_fold_locale[i] = toLOWER_LC(i);
bbce6d69 495 else if (isLOWER_LC(i))
22c35a8c 496 PL_fold_locale[i] = toUPPER_LC(i);
bbce6d69 497 else
22c35a8c 498 PL_fold_locale[i] = i;
bbce6d69 499 }
bbce6d69 500
36477c24
PP
501#endif /* USE_LOCALE_CTYPE */
502}
bbce6d69
PP
503
504/*
505 * Set up for a new collation locale.
506 */
507void
864dbfa3 508Perl_new_collate(pTHX_ const char *newcoll)
bbce6d69 509{
36477c24
PP
510#ifdef USE_LOCALE_COLLATE
511
bbce6d69 512 if (! newcoll) {
3280af22
NIS
513 if (PL_collation_name) {
514 ++PL_collation_ix;
515 Safefree(PL_collation_name);
516 PL_collation_name = NULL;
517 PL_collation_standard = TRUE;
518 PL_collxfrm_base = 0;
519 PL_collxfrm_mult = 2;
bbce6d69
PP
520 }
521 return;
522 }
523
3280af22
NIS
524 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
525 ++PL_collation_ix;
526 Safefree(PL_collation_name);
527 PL_collation_name = savepv(newcoll);
528 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 529
bbce6d69
PP
530 {
531 /* 2: at most so many chars ('a', 'b'). */
532 /* 50: surely no system expands a char more. */
533#define XFRMBUFSIZE (2 * 50)
534 char xbuf[XFRMBUFSIZE];
535 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
536 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
537 SSize_t mult = fb - fa;
538 if (mult < 1)
cea2e8a9 539 Perl_croak(aTHX_ "strxfrm() gets absurd");
3280af22
NIS
540 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
541 PL_collxfrm_mult = mult;
bbce6d69 542 }
bbce6d69 543 }
bbce6d69 544
36477c24
PP
545#endif /* USE_LOCALE_COLLATE */
546}
bbce6d69 547
097ee67d 548void
51371543 549Perl_set_numeric_radix(pTHX)
097ee67d
JH
550{
551#ifdef USE_LOCALE_NUMERIC
552# ifdef HAS_LOCALECONV
553 struct lconv* lc;
554
555 lc = localeconv();
556 if (lc && lc->decimal_point)
557 /* We assume that decimal separator aka the radix
558 * character is always a single character. If it
559 * ever is a string, this needs to be rethunk. */
560 PL_numeric_radix = *lc->decimal_point;
561 else
562 PL_numeric_radix = 0;
563# endif /* HAS_LOCALECONV */
564#else
565 PL_numeric_radix = 0;
566#endif /* USE_LOCALE_NUMERIC */
567}
568
bbce6d69
PP
569/*
570 * Set up for a new numeric locale.
571 */
572void
864dbfa3 573Perl_new_numeric(pTHX_ const char *newnum)
bbce6d69 574{
36477c24
PP
575#ifdef USE_LOCALE_NUMERIC
576
bbce6d69 577 if (! newnum) {
3280af22
NIS
578 if (PL_numeric_name) {
579 Safefree(PL_numeric_name);
580 PL_numeric_name = NULL;
581 PL_numeric_standard = TRUE;
582 PL_numeric_local = TRUE;
bbce6d69
PP
583 }
584 return;
585 }
586
3280af22
NIS
587 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
588 Safefree(PL_numeric_name);
589 PL_numeric_name = savepv(newnum);
590 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
591 PL_numeric_local = TRUE;
51371543 592 set_numeric_radix();
bbce6d69 593 }
36477c24
PP
594
595#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
596}
597
598void
864dbfa3 599Perl_set_numeric_standard(pTHX)
bbce6d69 600{
5f05dabc
PP
601#ifdef USE_LOCALE_NUMERIC
602
3280af22 603 if (! PL_numeric_standard) {
bbce6d69 604 setlocale(LC_NUMERIC, "C");
3280af22
NIS
605 PL_numeric_standard = TRUE;
606 PL_numeric_local = FALSE;
bbce6d69 607 }
5f05dabc
PP
608
609#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
610}
611
612void
864dbfa3 613Perl_set_numeric_local(pTHX)
bbce6d69 614{
5f05dabc
PP
615#ifdef USE_LOCALE_NUMERIC
616
3280af22
NIS
617 if (! PL_numeric_local) {
618 setlocale(LC_NUMERIC, PL_numeric_name);
619 PL_numeric_standard = FALSE;
620 PL_numeric_local = TRUE;
51371543 621 set_numeric_radix();
bbce6d69 622 }
bbce6d69 623
36477c24 624#endif /* USE_LOCALE_NUMERIC */
5f05dabc 625}
36477c24 626
36477c24
PP
627/*
628 * Initialize locale awareness.
629 */
f0c5b223 630int
864dbfa3 631Perl_init_i18nl10n(pTHX_ int printwarn)
f0c5b223
TB
632{
633 int ok = 1;
634 /* returns
635 * 1 = set ok or not applicable,
636 * 0 = fallback to C locale,
637 * -1 = fallback to C locale failed
638 */
bbce6d69 639
36477c24 640#ifdef USE_LOCALE
bbce6d69 641
36477c24 642#ifdef USE_LOCALE_CTYPE
bbce6d69 643 char *curctype = NULL;
36477c24
PP
644#endif /* USE_LOCALE_CTYPE */
645#ifdef USE_LOCALE_COLLATE
bbce6d69 646 char *curcoll = NULL;
36477c24
PP
647#endif /* USE_LOCALE_COLLATE */
648#ifdef USE_LOCALE_NUMERIC
bbce6d69 649 char *curnum = NULL;
36477c24 650#endif /* USE_LOCALE_NUMERIC */
3aeabbed
JH
651#ifdef __GLIBC__
652 char *language = PerlEnv_getenv("LANGUAGE");
653#endif
76e3520e
GS
654 char *lc_all = PerlEnv_getenv("LC_ALL");
655 char *lang = PerlEnv_getenv("LANG");
bbce6d69 656 bool setlocale_failure = FALSE;
f0c5b223 657
02b32252
CS
658#ifdef LOCALE_ENVIRON_REQUIRED
659
660 /*
661 * Ultrix setlocale(..., "") fails if there are no environment
662 * variables from which to get a locale name.
663 */
664
665 bool done = FALSE;
666
667#ifdef LC_ALL
668 if (lang) {
669 if (setlocale(LC_ALL, ""))
670 done = TRUE;
671 else
672 setlocale_failure = TRUE;
673 }
0644c9cb 674 if (!setlocale_failure) {
02b32252 675#ifdef USE_LOCALE_CTYPE
0644c9cb
IS
676 if (! (curctype =
677 setlocale(LC_CTYPE,
678 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
02b32252
CS
679 ? "" : Nullch)))
680 setlocale_failure = TRUE;
681#endif /* USE_LOCALE_CTYPE */
682#ifdef USE_LOCALE_COLLATE
0644c9cb
IS
683 if (! (curcoll =
684 setlocale(LC_COLLATE,
685 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
02b32252
CS
686 ? "" : Nullch)))
687 setlocale_failure = TRUE;
688#endif /* USE_LOCALE_COLLATE */
689#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS
690 if (! (curnum =
691 setlocale(LC_NUMERIC,
692 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
02b32252
CS
693 ? "" : Nullch)))
694 setlocale_failure = TRUE;
695#endif /* USE_LOCALE_NUMERIC */
696 }
697
0644c9cb 698#endif /* LC_ALL */
02b32252 699
0644c9cb 700#endif /* !LOCALE_ENVIRON_REQUIRED */
5f05dabc 701
0644c9cb 702#ifdef LC_ALL
bbce6d69
PP
703 if (! setlocale(LC_ALL, ""))
704 setlocale_failure = TRUE;
0644c9cb 705#endif /* LC_ALL */
bbce6d69 706
0644c9cb 707 if (!setlocale_failure) {
36477c24 708#ifdef USE_LOCALE_CTYPE
0644c9cb
IS
709 if (! (curctype = setlocale(LC_CTYPE, "")))
710 setlocale_failure = TRUE;
36477c24
PP
711#endif /* USE_LOCALE_CTYPE */
712#ifdef USE_LOCALE_COLLATE
0644c9cb
IS
713 if (! (curcoll = setlocale(LC_COLLATE, "")))
714 setlocale_failure = TRUE;
36477c24
PP
715#endif /* USE_LOCALE_COLLATE */
716#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS
717 if (! (curnum = setlocale(LC_NUMERIC, "")))
718 setlocale_failure = TRUE;
36477c24 719#endif /* USE_LOCALE_NUMERIC */
0644c9cb 720 }
02b32252 721
5f05dabc
PP
722 if (setlocale_failure) {
723 char *p;
724 bool locwarn = (printwarn > 1 ||
725 printwarn &&
76e3520e 726 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)));
20cec16a 727
5f05dabc
PP
728 if (locwarn) {
729#ifdef LC_ALL
730
731 PerlIO_printf(PerlIO_stderr(),
732 "perl: warning: Setting locale failed.\n");
733
734#else /* !LC_ALL */
735
ef7eada9 736 PerlIO_printf(PerlIO_stderr(),
bbce6d69 737 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 738#ifdef USE_LOCALE_CTYPE
bbce6d69 739 if (! curctype)
5f05dabc 740 PerlIO_printf(PerlIO_stderr(), "LC_CTYPE ");
36477c24
PP
741#endif /* USE_LOCALE_CTYPE */
742#ifdef USE_LOCALE_COLLATE
bbce6d69 743 if (! curcoll)
5f05dabc 744 PerlIO_printf(PerlIO_stderr(), "LC_COLLATE ");
36477c24
PP
745#endif /* USE_LOCALE_COLLATE */
746#ifdef USE_LOCALE_NUMERIC
bbce6d69 747 if (! curnum)
5f05dabc 748 PerlIO_printf(PerlIO_stderr(), "LC_NUMERIC ");
36477c24 749#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
750 PerlIO_printf(PerlIO_stderr(), "\n");
751
5f05dabc
PP
752#endif /* LC_ALL */
753
760ac839 754 PerlIO_printf(PerlIO_stderr(),
bbce6d69 755 "perl: warning: Please check that your locale settings:\n");
ef7eada9 756
3aeabbed
JH
757#ifdef __GLIBC__
758 PerlIO_printf(PerlIO_stderr(),
759 "\tLANGUAGE = %c%s%c,\n",
760 language ? '"' : '(',
761 language ? language : "unset",
762 language ? '"' : ')');
763#endif
764
ef7eada9 765 PerlIO_printf(PerlIO_stderr(),
bbce6d69
PP
766 "\tLC_ALL = %c%s%c,\n",
767 lc_all ? '"' : '(',
768 lc_all ? lc_all : "unset",
769 lc_all ? '"' : ')');
5f05dabc
PP
770
771 {
772 char **e;
773 for (e = environ; *e; e++) {
774 if (strnEQ(*e, "LC_", 3)
775 && strnNE(*e, "LC_ALL=", 7)
776 && (p = strchr(*e, '=')))
777 PerlIO_printf(PerlIO_stderr(), "\t%.*s = \"%s\",\n",
fb73857a 778 (int)(p - *e), *e, p + 1);
5f05dabc
PP
779 }
780 }
781
ef7eada9 782 PerlIO_printf(PerlIO_stderr(),
bbce6d69 783 "\tLANG = %c%s%c\n",
5f05dabc 784 lang ? '"' : '(',
bbce6d69
PP
785 lang ? lang : "unset",
786 lang ? '"' : ')');
ef7eada9 787
bbce6d69
PP
788 PerlIO_printf(PerlIO_stderr(),
789 " are supported and installed on your system.\n");
5f05dabc 790 }
ef7eada9 791
5f05dabc
PP
792#ifdef LC_ALL
793
794 if (setlocale(LC_ALL, "C")) {
795 if (locwarn)
796 PerlIO_printf(PerlIO_stderr(),
797 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 798 ok = 0;
ef7eada9 799 }
5f05dabc
PP
800 else {
801 if (locwarn)
802 PerlIO_printf(PerlIO_stderr(),
803 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
804 ok = -1;
805 }
bbce6d69 806
5f05dabc
PP
807#else /* ! LC_ALL */
808
809 if (0
36477c24 810#ifdef USE_LOCALE_CTYPE
5f05dabc 811 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24
PP
812#endif /* USE_LOCALE_CTYPE */
813#ifdef USE_LOCALE_COLLATE
5f05dabc 814 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24
PP
815#endif /* USE_LOCALE_COLLATE */
816#ifdef USE_LOCALE_NUMERIC
5f05dabc 817 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 818#endif /* USE_LOCALE_NUMERIC */
5f05dabc
PP
819 )
820 {
821 if (locwarn)
bbce6d69 822 PerlIO_printf(PerlIO_stderr(),
5f05dabc
PP
823 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
824 ok = -1;
bbce6d69 825 }
5f05dabc 826
bbce6d69 827#endif /* ! LC_ALL */
5f05dabc
PP
828
829#ifdef USE_LOCALE_CTYPE
830 curctype = setlocale(LC_CTYPE, Nullch);
831#endif /* USE_LOCALE_CTYPE */
832#ifdef USE_LOCALE_COLLATE
833 curcoll = setlocale(LC_COLLATE, Nullch);
834#endif /* USE_LOCALE_COLLATE */
835#ifdef USE_LOCALE_NUMERIC
836 curnum = setlocale(LC_NUMERIC, Nullch);
837#endif /* USE_LOCALE_NUMERIC */
ef7eada9
JH
838 }
839
36477c24 840#ifdef USE_LOCALE_CTYPE
864dbfa3 841 new_ctype(curctype);
36477c24 842#endif /* USE_LOCALE_CTYPE */
bbce6d69 843
36477c24 844#ifdef USE_LOCALE_COLLATE
864dbfa3 845 new_collate(curcoll);
36477c24 846#endif /* USE_LOCALE_COLLATE */
bbce6d69 847
36477c24 848#ifdef USE_LOCALE_NUMERIC
864dbfa3 849 new_numeric(curnum);
36477c24 850#endif /* USE_LOCALE_NUMERIC */
ef7eada9 851
36477c24 852#endif /* USE_LOCALE */
ef7eada9 853
f0c5b223
TB
854 return ok;
855}
856
bbce6d69
PP
857/* Backwards compatibility. */
858int
864dbfa3 859Perl_init_i18nl14n(pTHX_ int printwarn)
bbce6d69 860{
864dbfa3 861 return init_i18nl10n(printwarn);
bbce6d69 862}
ef7eada9 863
36477c24 864#ifdef USE_LOCALE_COLLATE
ef7eada9 865
bbce6d69
PP
866/*
867 * mem_collxfrm() is a bit like strxfrm() but with two important
868 * differences. First, it handles embedded NULs. Second, it allocates
869 * a bit more memory than needed for the transformed data itself.
870 * The real transformed data begins at offset sizeof(collationix).
871 * Please see sv_collxfrm() to see how this is used.
872 */
873char *
864dbfa3 874Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
bbce6d69
PP
875{
876 char *xbuf;
76e3520e 877 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69
PP
878
879 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
880 /* the +1 is for the terminating NUL. */
881
3280af22 882 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
76e3520e 883 New(171, xbuf, xAlloc, char);
bbce6d69
PP
884 if (! xbuf)
885 goto bad;
886
3280af22
NIS
887 *(U32*)xbuf = PL_collation_ix;
888 xout = sizeof(PL_collation_ix);
bbce6d69
PP
889 for (xin = 0; xin < len; ) {
890 SSize_t xused;
891
892 for (;;) {
76e3520e 893 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69
PP
894 if (xused == -1)
895 goto bad;
76e3520e 896 if (xused < xAlloc - xout)
bbce6d69 897 break;
76e3520e
GS
898 xAlloc = (2 * xAlloc) + 1;
899 Renew(xbuf, xAlloc, char);
bbce6d69
PP
900 if (! xbuf)
901 goto bad;
902 }
ef7eada9 903
bbce6d69
PP
904 xin += strlen(s + xin) + 1;
905 xout += xused;
906
907 /* Embedded NULs are understood but silently skipped
908 * because they make no sense in locale collation. */
909 }
ef7eada9 910
bbce6d69 911 xbuf[xout] = '\0';
3280af22 912 *xlen = xout - sizeof(PL_collation_ix);
bbce6d69
PP
913 return xbuf;
914
915 bad:
916 Safefree(xbuf);
917 *xlen = 0;
918 return NULL;
ef7eada9
JH
919}
920
36477c24 921#endif /* USE_LOCALE_COLLATE */
bbce6d69 922
cf93c79d
IZ
923#define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
924
925/* As a space optimization, we do not compile tables for strings of length
926 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
927 special-cased in fbm_instr().
928
929 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
930
378cc40b 931void
864dbfa3 932Perl_fbm_compile(pTHX_ SV *sv, U32 flags /* not used yet */)
378cc40b 933{
942e002e
GS
934 register U8 *s;
935 register U8 *table;
79072805 936 register U32 i;
0b71040e 937 STRLEN len;
79072805
LW
938 I32 rarest = 0;
939 U32 frequency = 256;
940
cf93c79d
IZ
941 if (flags & FBMcf_TAIL)
942 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
942e002e 943 s = (U8*)SvPV_force(sv, len);
07f14f54 944 (void)SvUPGRADE(sv, SVt_PVBM);
cf93c79d
IZ
945 if (len == 0) /* TAIL might be on on a zero-length string. */
946 return;
02128f11 947 if (len > 2) {
cf93c79d
IZ
948 I32 mlen = len;
949 unsigned char *sb;
950
951 if (mlen > 255)
952 mlen = 255;
953 Sv_Grow(sv,len + 256 + FBM_TABLE_OFFSET);
954 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
955 s = table - 1 - FBM_TABLE_OFFSET; /* Last char */
02128f11 956 for (i = 0; i < 256; i++) {
cf93c79d 957 table[i] = mlen;
02128f11 958 }
cf93c79d 959 table[-1] = flags; /* Not used yet */
02128f11 960 i = 0;
cf93c79d
IZ
961 sb = s - mlen;
962 while (s >= sb) {
963 if (table[*s] == mlen)
964 table[*s] = i;
965 s--, i++;
966 }
378cc40b 967 }
bbce6d69 968 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 969 SvVALID_on(sv);
378cc40b 970
463ee0b2 971 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69 972 for (i = 0; i < len; i++) {
22c35a8c 973 if (PL_freq[s[i]] < frequency) {
bbce6d69 974 rarest = i;
22c35a8c 975 frequency = PL_freq[s[i]];
378cc40b
LW
976 }
977 }
79072805
LW
978 BmRARE(sv) = s[rarest];
979 BmPREVIOUS(sv) = rarest;
cf93c79d
IZ
980 BmUSEFUL(sv) = 100; /* Initial value */
981 if (flags & FBMcf_TAIL)
982 SvTAIL_on(sv);
760ac839 983 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW
984}
985
cf93c79d
IZ
986/* If SvTAIL(littlestr), it has a fake '\n' at end. */
987/* If SvTAIL is actually due to \Z or \z, this gives false positives
988 if multiline */
989
378cc40b 990char *
864dbfa3 991Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
378cc40b 992{
a687059c 993 register unsigned char *s;
cf93c79d
IZ
994 STRLEN l;
995 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
996 register STRLEN littlelen = l;
997 register I32 multiline = flags & FBMrf_MULTILINE;
998
999 if (bigend - big < littlelen) {
1000 check_tail:
1001 if ( SvTAIL(littlestr)
1002 && (bigend - big == littlelen - 1)
1003 && (littlelen == 1
1004 || *big == *little && memEQ(big, little, littlelen - 1)))
1005 return (char*)big;
1006 return Nullch;
1007 }
378cc40b 1008
cf93c79d
IZ
1009 if (littlelen <= 2) { /* Special-cased */
1010 register char c;
1011
1012 if (littlelen == 1) {
1013 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
1014 /* Know that bigend != big. */
1015 if (bigend[-1] == '\n')
1016 return (char *)(bigend - 1);
1017 return (char *) bigend;
1018 }
1019 s = big;
1020 while (s < bigend) {
1021 if (*s == *little)
1022 return (char *)s;
1023 s++;
1024 }
1025 if (SvTAIL(littlestr))
1026 return (char *) bigend;
1027 return Nullch;
1028 }
1029 if (!littlelen)
1030 return (char*)big; /* Cannot be SvTAIL! */
1031
1032 /* littlelen is 2 */
1033 if (SvTAIL(littlestr) && !multiline) {
1034 if (bigend[-1] == '\n' && bigend[-2] == *little)
1035 return (char*)bigend - 2;
1036 if (bigend[-1] == *little)
1037 return (char*)bigend - 1;
1038 return Nullch;
1039 }
1040 {
1041 /* This should be better than FBM if c1 == c2, and almost
1042 as good otherwise: maybe better since we do less indirection.
1043 And we save a lot of memory by caching no table. */
1044 register unsigned char c1 = little[0];
1045 register unsigned char c2 = little[1];
1046
1047 s = big + 1;
1048 bigend--;
1049 if (c1 != c2) {
1050 while (s <= bigend) {
1051 if (s[0] == c2) {
1052 if (s[-1] == c1)
1053 return (char*)s - 1;
1054 s += 2;
1055 continue;
3fe6f2dc 1056 }
cf93c79d
IZ
1057 next_chars:
1058 if (s[0] == c1) {
1059 if (s == bigend)
1060 goto check_1char_anchor;
1061 if (s[1] == c2)
1062 return (char*)s;
1063 else {
1064 s++;
1065 goto next_chars;
1066 }
1067 }
1068 else
1069 s += 2;
1070 }
1071 goto check_1char_anchor;
1072 }
1073 /* Now c1 == c2 */
1074 while (s <= bigend) {
1075 if (s[0] == c1) {
1076 if (s[-1] == c1)
1077 return (char*)s - 1;
1078 if (s == bigend)
1079 goto check_1char_anchor;
1080 if (s[1] == c1)
1081 return (char*)s;
1082 s += 3;
02128f11 1083 }
c277df42 1084 else
cf93c79d 1085 s += 2;
c277df42 1086 }
c277df42 1087 }
cf93c79d
IZ
1088 check_1char_anchor: /* One char and anchor! */
1089 if (SvTAIL(littlestr) && (*bigend == *little))
1090 return (char *)bigend; /* bigend is already decremented. */
1091 return Nullch;
d48672a2 1092 }
cf93c79d 1093 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
bbce6d69 1094 s = bigend - littlelen;
cf93c79d 1095 if (s >= big
02128f11 1096 && bigend[-1] == '\n'
cf93c79d
IZ
1097 && *s == *little
1098 /* Automatically of length > 2 */
1099 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
bbce6d69 1100 return (char*)s; /* how sweet it is */
cf93c79d
IZ
1101 if (s[1] == *little && memEQ((char*)s + 2,(char*)little + 1,
1102 littlelen - 2))
1103 return (char*)s + 1; /* how sweet it is */
02128f11
IZ
1104 return Nullch;
1105 }
cf93c79d
IZ
1106 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1107 char *b = ninstr((char*)big,(char*)bigend,
1108 (char*)little, (char*)little + littlelen);
1109
1110 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1111 /* Chop \n from littlestr: */
1112 s = bigend - littlelen + 1;
1113 if (*s == *little && memEQ((char*)s + 1, (char*)little + 1,
1114 littlelen - 2))
3fe6f2dc 1115 return (char*)s;
cf93c79d 1116 return Nullch;
a687059c 1117 }
cf93c79d 1118 return b;
a687059c 1119 }
cf93c79d
IZ
1120
1121 { /* Do actual FBM. */
1122 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1123 register unsigned char *oldlittle;
1124
1125 if (littlelen > bigend - big)
1126 return Nullch;
1127 --littlelen; /* Last char found by table lookup */
1128
1129 s = big + littlelen;
1130 little += littlelen; /* last char */
1131 oldlittle = little;
1132 if (s < bigend) {
1133 register I32 tmp;
1134
1135 top2:
1136 /*SUPPRESS 560*/
1137 if (tmp = table[*s]) {
62b28dd9 1138#ifdef POINTERRIGOR
cf93c79d
IZ
1139 if (bigend - s > tmp) {
1140 s += tmp;
1141 goto top2;
1142 }
bbce6d69 1143 s += tmp;
62b28dd9 1144#else
cf93c79d 1145 if ((s += tmp) < bigend)
62b28dd9 1146 goto top2;
cf93c79d
IZ
1147#endif
1148 goto check_end;
1149 }
1150 else { /* less expensive than calling strncmp() */
1151 register unsigned char *olds = s;
1152
1153 tmp = littlelen;
1154
1155 while (tmp--) {
1156 if (*--s == *--little)
1157 continue;
1158 differ:
1159 s = olds + 1; /* here we pay the price for failure */
1160 little = oldlittle;
1161 if (s < bigend) /* fake up continue to outer loop */
1162 goto top2;
1163 goto check_end;
1164 }
1165 return (char *)s;
a687059c 1166 }
378cc40b 1167 }
cf93c79d
IZ
1168 check_end:
1169 if ( s == bigend && (table[-1] & FBMcf_TAIL)
1170 && memEQ(bigend - littlelen, oldlittle - littlelen, littlelen) )
1171 return (char*)bigend - littlelen;
1172 return Nullch;
378cc40b 1173 }
378cc40b
LW
1174}
1175
c277df42
IZ
1176/* start_shift, end_shift are positive quantities which give offsets
1177 of ends of some substring of bigstr.
1178 If `last' we want the last occurence.
1179 old_posp is the way of communication between consequent calls if
1180 the next call needs to find the .
1181 The initial *old_posp should be -1.
cf93c79d
IZ
1182
1183 Note that we take into account SvTAIL, so one can get extra
1184 optimizations if _ALL flag is set.
c277df42
IZ
1185 */
1186
cf93c79d
IZ
1187/* If SvTAIL is actually due to \Z or \z, this gives false positives
1188 if PL_multiline. In fact if !PL_multiline the autoritative answer
1189 is not supported yet. */
1190
378cc40b 1191char *
864dbfa3 1192Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1193{
5c0ca799 1194 dTHR;
a687059c
LW
1195 register unsigned char *s, *x;
1196 register unsigned char *big;
79072805
LW
1197 register I32 pos;
1198 register I32 previous;
1199 register I32 first;
a687059c 1200 register unsigned char *little;
c277df42 1201 register I32 stop_pos;
a687059c 1202 register unsigned char *littleend;
c277df42 1203 I32 found = 0;
378cc40b 1204
c277df42 1205 if (*old_posp == -1
3280af22 1206 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
cf93c79d
IZ
1207 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1208 cant_find:
1209 if ( BmRARE(littlestr) == '\n'
1210 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1211 little = (unsigned char *)(SvPVX(littlestr));
1212 littleend = little + SvCUR(littlestr);
1213 first = *little++;
1214 goto check_tail;
1215 }
378cc40b 1216 return Nullch;
cf93c79d
IZ
1217 }
1218
463ee0b2 1219 little = (unsigned char *)(SvPVX(littlestr));
79072805 1220 littleend = little + SvCUR(littlestr);
378cc40b 1221 first = *little++;
c277df42 1222 /* The value of pos we can start at: */
79072805 1223 previous = BmPREVIOUS(littlestr);
463ee0b2 1224 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ
1225 /* The value of pos we can stop at: */
1226 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
cf93c79d
IZ
1227 if (previous + start_shift > stop_pos) {
1228 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1229 goto check_tail;
1230 return Nullch;
1231 }
c277df42 1232 while (pos < previous + start_shift) {
3280af22 1233 if (!(pos += PL_screamnext[pos]))
cf93c79d 1234 goto cant_find;
378cc40b 1235 }
de3bb511 1236#ifdef POINTERRIGOR
bbce6d69 1237 do {
ef64f398 1238 if (pos >= stop_pos) break;
bbce6d69
PP
1239 if (big[pos-previous] != first)
1240 continue;
1241 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1242 if (*s++ != *x++) {
1243 s--;
1244 break;
de3bb511 1245 }
bbce6d69 1246 }
c277df42
IZ
1247 if (s == littleend) {
1248 *old_posp = pos;
1249 if (!last) return (char *)(big+pos-previous);
1250 found = 1;
1251 }
6b88bc9c 1252 } while ( pos += PL_screamnext[pos] );
c277df42 1253 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW
1254#else /* !POINTERRIGOR */
1255 big -= previous;
bbce6d69 1256 do {
ef64f398 1257 if (pos >= stop_pos) break;
bbce6d69
PP
1258 if (big[pos] != first)
1259 continue;
1260 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1261 if (*s++ != *x++) {
1262 s--;
1263 break;
378cc40b 1264 }
bbce6d69 1265 }
c277df42
IZ
1266 if (s == littleend) {
1267 *old_posp = pos;
1268 if (!last) return (char *)(big+pos);
1269 found = 1;
1270 }
3280af22 1271 } while ( pos += PL_screamnext[pos] );
cf93c79d
IZ
1272 if (last && found)
1273 return (char *)(big+(*old_posp));
de3bb511 1274#endif /* POINTERRIGOR */
cf93c79d
IZ
1275 check_tail:
1276 if (!SvTAIL(littlestr) || (end_shift > 0))
1277 return Nullch;
1278 /* Ignore the trailing "\n". This code is not microoptimized */
1279 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1280 stop_pos = littleend - little; /* Actual littlestr len */
1281 if (stop_pos == 0)
1282 return (char*)big;
1283 big -= stop_pos;
1284 if (*big == first
1285 && ((stop_pos == 1) || memEQ(big + 1, little, stop_pos - 1)))
1286 return (char*)big;
1287 return Nullch;
8d063cd8
LW
1288}
1289
79072805 1290I32
864dbfa3 1291Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
79072805 1292{
bbce6d69
PP
1293 register U8 *a = (U8 *)s1;
1294 register U8 *b = (U8 *)s2;
79072805 1295 while (len--) {
22c35a8c 1296 if (*a != *b && *a != PL_fold[*b])
bbce6d69
PP
1297 return 1;
1298 a++,b++;
1299 }
1300 return 0;
1301}
1302
1303I32
864dbfa3 1304Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
bbce6d69
PP
1305{
1306 register U8 *a = (U8 *)s1;
1307 register U8 *b = (U8 *)s2;
1308 while (len--) {
22c35a8c 1309 if (*a != *b && *a != PL_fold_locale[*b])
bbce6d69
PP
1310 return 1;
1311 a++,b++;
79072805
LW
1312 }
1313 return 0;
1314}
1315
8d063cd8
LW
1316/* copy a string to a safe spot */
1317
1318char *
864dbfa3 1319Perl_savepv(pTHX_ const char *sv)
8d063cd8 1320{
a687059c 1321 register char *newaddr;
8d063cd8 1322
79072805
LW
1323 New(902,newaddr,strlen(sv)+1,char);
1324 (void)strcpy(newaddr,sv);
8d063cd8
LW
1325 return newaddr;
1326}
1327
a687059c
LW
1328/* same thing but with a known length */
1329
1330char *
864dbfa3 1331Perl_savepvn(pTHX_ const char *sv, register I32 len)
a687059c
LW
1332{
1333 register char *newaddr;
1334
1335 New(903,newaddr,len+1,char);
79072805 1336 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW
1337 newaddr[len] = '\0'; /* is now */
1338 return newaddr;
1339}
1340
cea2e8a9 1341/* the SV for Perl_form() and mess() is not kept in an arena */
fc36a67e 1342
76e3520e 1343STATIC SV *
cea2e8a9 1344S_mess_alloc(pTHX)
fc36a67e 1345{
e72dc28c 1346 dTHR;
fc36a67e
PP
1347 SV *sv;
1348 XPVMG *any;
1349
e72dc28c
GS
1350 if (!PL_dirty)
1351 return sv_2mortal(newSVpvn("",0));
1352
0372dbb6
GS
1353 if (PL_mess_sv)
1354 return PL_mess_sv;
1355
fc36a67e
PP
1356 /* Create as PVMG now, to avoid any upgrading later */
1357 New(905, sv, 1, SV);
1358 Newz(905, any, 1, XPVMG);
1359 SvFLAGS(sv) = SVt_PVMG;
1360 SvANY(sv) = (void*)any;
1361 SvREFCNT(sv) = 1 << 30; /* practically infinite */
e72dc28c 1362 PL_mess_sv = sv;
fc36a67e
PP
1363 return sv;
1364}
1365
c5be433b 1366#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS
1367char *
1368Perl_form_nocontext(const char* pat, ...)
1369{
1370 dTHX;
c5be433b 1371 char *retval;
cea2e8a9
GS
1372 va_list args;
1373 va_start(args, pat);
c5be433b 1374 retval = vform(pat, &args);
cea2e8a9 1375 va_end(args);
c5be433b 1376 return retval;
cea2e8a9 1377}
c5be433b 1378#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9 1379
8990e307 1380char *
864dbfa3 1381Perl_form(pTHX_ const char* pat, ...)
8990e307 1382{
c5be433b 1383 char *retval;
46fc3d4c 1384 va_list args;
46fc3d4c 1385 va_start(args, pat);
c5be433b 1386 retval = vform(pat, &args);
46fc3d4c 1387 va_end(args);
c5be433b
GS
1388 return retval;
1389}
1390
1391char *
1392Perl_vform(pTHX_ const char *pat, va_list *args)
1393{
1394 SV *sv = mess_alloc();
1395 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
e72dc28c 1396 return SvPVX(sv);
46fc3d4c 1397}
a687059c 1398
06bf62c7 1399SV *
864dbfa3 1400Perl_mess(pTHX_ const char *pat, va_list *args)
46fc3d4c 1401{
e72dc28c 1402 SV *sv = mess_alloc();
46fc3d4c
PP
1403 static char dgd[] = " during global destruction.\n";
1404
fc36a67e 1405 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1406 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1407 dTHR;
515f54a1 1408 if (PL_curcop->cop_line)
cea2e8a9 1409 Perl_sv_catpvf(aTHX_ sv, " at %_ line %ld",
515f54a1
GS
1410 GvSV(PL_curcop->cop_filegv), (long)PL_curcop->cop_line);
1411 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1412 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1413 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
cea2e8a9 1414 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %ld",
515f54a1
GS
1415 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1416 line_mode ? "line" : "chunk",
1417 (long)IoLINES(GvIOp(PL_last_in_gv)));
a687059c 1418 }
515f54a1 1419 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1420 }
06bf62c7 1421 return sv;
a687059c
LW
1422}
1423
c5be433b
GS
1424OP *
1425Perl_vdie(pTHX_ const char* pat, va_list *args)
36477c24 1426{
5dc0d613 1427 dTHR;
36477c24 1428 char *message;
3280af22 1429 int was_in_eval = PL_in_eval;
36477c24
PP
1430 HV *stash;
1431 GV *gv;
1432 CV *cv;
06bf62c7
GS
1433 SV *msv;
1434 STRLEN msglen;
36477c24 1435
8b73bbec 1436 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
199100c8 1437 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1438 thr, PL_curstack, PL_mainstack));
36477c24 1439
06bf62c7 1440 if (pat) {
cea2e8a9 1441 msv = mess(pat, args);
06bf62c7
GS
1442 message = SvPV(msv,msglen);
1443 }
1444 else {
1445 message = Nullch;
1446 }
36477c24 1447
8b73bbec 1448 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
199100c8 1449 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1450 thr, message, PL_diehook));
3280af22 1451 if (PL_diehook) {
cea2e8a9 1452 /* sv_2cv might call Perl_croak() */
3280af22 1453 SV *olddiehook = PL_diehook;
1738f5c4 1454 ENTER;
3280af22
NIS
1455 SAVESPTR(PL_diehook);
1456 PL_diehook = Nullsv;
1738f5c4
CS
1457 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1458 LEAVE;
1459 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1460 dSP;
774d564b
PP
1461 SV *msg;
1462
1463 ENTER;
79cb57f6 1464 if (message) {
06bf62c7 1465 msg = newSVpvn(message, msglen);
4e6ea2c3
GS
1466 SvREADONLY_on(msg);
1467 SAVEFREESV(msg);
1468 }
1469 else {
1470 msg = ERRSV;
1471 }
1738f5c4 1472
e788e7d3 1473 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1474 PUSHMARK(SP);
1738f5c4
CS
1475 XPUSHs(msg);
1476 PUTBACK;
864dbfa3 1477 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1478 POPSTACK;
774d564b 1479 LEAVE;
1738f5c4 1480 }
36477c24
PP
1481 }
1482
06bf62c7 1483 PL_restartop = die_where(message, msglen);
8b73bbec 1484 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
7c06b590 1485 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1486 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1487 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1488 JMPENV_JUMP(3);
3280af22 1489 return PL_restartop;
36477c24
PP
1490}
1491
c5be433b 1492#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS
1493OP *
1494Perl_die_nocontext(const char* pat, ...)
a687059c 1495{
cea2e8a9
GS
1496 dTHX;
1497 OP *o;
a687059c 1498 va_list args;
cea2e8a9 1499 va_start(args, pat);
c5be433b 1500 o = vdie(pat, &args);
cea2e8a9
GS
1501 va_end(args);
1502 return o;
1503}
c5be433b 1504#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9
GS
1505
1506OP *
1507Perl_die(pTHX_ const char* pat, ...)
1508{
1509 OP *o;
1510 va_list args;
1511 va_start(args, pat);
c5be433b 1512 o = vdie(pat, &args);
cea2e8a9
GS
1513 va_end(args);
1514 return o;
1515}
1516
c5be433b
GS
1517void
1518Perl_vcroak(pTHX_ const char* pat, va_list *args)
cea2e8a9
GS
1519{
1520 dTHR;
de3bb511 1521 char *message;
748a9306
LW
1522 HV *stash;
1523 GV *gv;
1524 CV *cv;
06bf62c7
GS
1525 SV *msv;
1526 STRLEN msglen;
a687059c 1527
cea2e8a9 1528 msv = mess(pat, args);
06bf62c7 1529 message = SvPV(msv,msglen);
8b73bbec 1530 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
3280af22 1531 if (PL_diehook) {
cea2e8a9 1532 /* sv_2cv might call Perl_croak() */
3280af22 1533 SV *olddiehook = PL_diehook;
1738f5c4 1534 ENTER;
3280af22
NIS
1535 SAVESPTR(PL_diehook);
1536 PL_diehook = Nullsv;
20cec16a 1537 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS
1538 LEAVE;
1539 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1540 dSP;
774d564b
PP
1541 SV *msg;
1542
1543 ENTER;
06bf62c7 1544 msg = newSVpvn(message, msglen);
774d564b
PP
1545 SvREADONLY_on(msg);
1546 SAVEFREESV(msg);
20cec16a 1547
e788e7d3 1548 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1549 PUSHMARK(SP);
1738f5c4 1550 XPUSHs(msg);
20cec16a 1551 PUTBACK;
864dbfa3 1552 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1553 POPSTACK;
774d564b 1554 LEAVE;
20cec16a 1555 }
748a9306 1556 }
3280af22 1557 if (PL_in_eval) {
06bf62c7 1558 PL_restartop = die_where(message, msglen);
6224f72b 1559 JMPENV_JUMP(3);
a0d0e21e 1560 }
d175a3f0
GS
1561 {
1562#ifdef USE_SFIO
1563 /* SFIO can really mess with your errno */
1564 int e = errno;
1565#endif
06bf62c7 1566 PerlIO_write(PerlIO_stderr(), message, msglen);
d175a3f0
GS
1567 (void)PerlIO_flush(PerlIO_stderr());
1568#ifdef USE_SFIO
1569 errno = e;
1570#endif
1571 }
f86702cc 1572 my_failure_exit();
a687059c
LW
1573}
1574
c5be433b 1575#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1576void
cea2e8a9 1577Perl_croak_nocontext(const char *pat, ...)
a687059c 1578{
cea2e8a9 1579 dTHX;
a687059c 1580 va_list args;
cea2e8a9 1581 va_start(args, pat);
c5be433b 1582 vcroak(pat, &args);
cea2e8a9
GS
1583 /* NOTREACHED */
1584 va_end(args);
1585}
1586#endif /* PERL_IMPLICIT_CONTEXT */
1587
1588void
1589Perl_croak(pTHX_ const char *pat, ...)
1590{
1591 va_list args;
1592 va_start(args, pat);
c5be433b 1593 vcroak(pat, &args);
cea2e8a9
GS
1594 /* NOTREACHED */
1595 va_end(args);
1596}
1597
c5be433b
GS
1598void
1599Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1600{
de3bb511 1601 char *message;
748a9306
LW
1602 HV *stash;
1603 GV *gv;
1604 CV *cv;
06bf62c7
GS
1605 SV *msv;
1606 STRLEN msglen;
a687059c 1607
cea2e8a9 1608 msv = mess(pat, args);
06bf62c7 1609 message = SvPV(msv, msglen);
a687059c 1610
3280af22 1611 if (PL_warnhook) {
cea2e8a9 1612 /* sv_2cv might call Perl_warn() */
11343788 1613 dTHR;
3280af22 1614 SV *oldwarnhook = PL_warnhook;
1738f5c4 1615 ENTER;
3280af22
NIS
1616 SAVESPTR(PL_warnhook);
1617 PL_warnhook = Nullsv;
20cec16a 1618 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS
1619 LEAVE;
1620 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1621 dSP;
774d564b
PP
1622 SV *msg;
1623
1624 ENTER;
06bf62c7 1625 msg = newSVpvn(message, msglen);
774d564b
PP
1626 SvREADONLY_on(msg);
1627 SAVEFREESV(msg);
1628
e788e7d3 1629 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1630 PUSHMARK(SP);
774d564b 1631 XPUSHs(msg);
20cec16a 1632 PUTBACK;
864dbfa3 1633 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1634 POPSTACK;
774d564b 1635 LEAVE;
20cec16a
PP
1636 return;
1637 }
748a9306 1638 }
06bf62c7 1639 PerlIO_write(PerlIO_stderr(), message, msglen);
a687059c 1640#ifdef LEAKTEST
8c52afec
IZ
1641 DEBUG_L(*message == '!'
1642 ? (xstat(message[1]=='!'
1643 ? (message[2]=='!' ? 2 : 1)
1644 : 0)
1645 , 0)
1646 : 0);
a687059c 1647#endif
20cec16a 1648 (void)PerlIO_flush(PerlIO_stderr());
a687059c 1649}
8d063cd8 1650
c5be433b 1651#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS
1652void
1653Perl_warn_nocontext(const char *pat, ...)
1654{
1655 dTHX;
1656 va_list args;
1657 va_start(args, pat);
c5be433b 1658 vwarn(pat, &args);
cea2e8a9
GS
1659 va_end(args);
1660}
1661#endif /* PERL_IMPLICIT_CONTEXT */
1662
1663void
1664Perl_warn(pTHX_ const char *pat, ...)
1665{
1666 va_list args;
1667 va_start(args, pat);
c5be433b 1668 vwarn(pat, &args);
cea2e8a9
GS
1669 va_end(args);
1670}
1671
c5be433b
GS
1672#if defined(PERL_IMPLICIT_CONTEXT)
1673void
1674Perl_warner_nocontext(U32 err, const char *pat, ...)
1675{
1676 dTHX;
1677 va_list args;
1678 va_start(args, pat);
1679 vwarner(err, pat, &args);
1680 va_end(args);
1681}
1682#endif /* PERL_IMPLICIT_CONTEXT */
1683
599cee73 1684void
864dbfa3 1685Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM
1686{
1687 va_list args;
c5be433b
GS
1688 va_start(args, pat);
1689 vwarner(err, pat, &args);
1690 va_end(args);
1691}
1692
1693void
1694Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1695{
1696 dTHR;
599cee73
PM
1697 char *message;
1698 HV *stash;
1699 GV *gv;
1700 CV *cv;
06bf62c7
GS
1701 SV *msv;
1702 STRLEN msglen;
599cee73 1703
c5be433b 1704 msv = mess(pat, args);
06bf62c7 1705 message = SvPV(msv, msglen);
599cee73
PM
1706
1707 if (ckDEAD(err)) {
1708#ifdef USE_THREADS
d008e5eb 1709 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
599cee73
PM
1710#endif /* USE_THREADS */
1711 if (PL_diehook) {
cea2e8a9 1712 /* sv_2cv might call Perl_croak() */
599cee73
PM
1713 SV *olddiehook = PL_diehook;
1714 ENTER;
1715 SAVESPTR(PL_diehook);
1716 PL_diehook = Nullsv;
1717 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1718 LEAVE;
1719 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1720 dSP;
1721 SV *msg;
1722
1723 ENTER;
06bf62c7 1724 msg = newSVpvn(message, msglen);
599cee73
PM
1725 SvREADONLY_on(msg);
1726 SAVEFREESV(msg);
1727
1728 PUSHMARK(sp);
1729 XPUSHs(msg);
1730 PUTBACK;
864dbfa3 1731 call_sv((SV*)cv, G_DISCARD);
599cee73
PM
1732
1733 LEAVE;
1734 }
1735 }
1736 if (PL_in_eval) {
06bf62c7 1737 PL_restartop = die_where(message, msglen);
599cee73
PM
1738 JMPENV_JUMP(3);
1739 }
06bf62c7 1740 PerlIO_write(PerlIO_stderr(), message, msglen);
599cee73
PM
1741 (void)PerlIO_flush(PerlIO_stderr());
1742 my_failure_exit();
1743
1744 }
1745 else {
1746 if (PL_warnhook) {
cea2e8a9 1747 /* sv_2cv might call Perl_warn() */
599cee73
PM
1748 dTHR;
1749 SV *oldwarnhook = PL_warnhook;
1750 ENTER;
1751 SAVESPTR(PL_warnhook);
1752 PL_warnhook = Nullsv;
1753 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1754 LEAVE;
1755 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1756 dSP;
1757 SV *msg;
1758
1759 ENTER;
06bf62c7 1760 msg = newSVpvn(message, msglen);
599cee73
PM
1761 SvREADONLY_on(msg);
1762 SAVEFREESV(msg);
1763
1764 PUSHMARK(sp);
1765 XPUSHs(msg);
1766 PUTBACK;
864dbfa3 1767 call_sv((SV*)cv, G_DISCARD);
599cee73
PM
1768
1769 LEAVE;
1770 return;
1771 }
1772 }
06bf62c7 1773 PerlIO_write(PerlIO_stderr(), message, msglen);
599cee73
PM
1774#ifdef LEAKTEST
1775 DEBUG_L(xstat());
1776#endif
1777 (void)PerlIO_flush(PerlIO_stderr());
1778 }
1779}
1780
a0d0e21e 1781#ifndef VMS /* VMS' my_setenv() is in VMS.c */
f89d6eaa 1782#if !defined(WIN32) && !defined(CYGWIN32)
8d063cd8 1783void
864dbfa3 1784Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1785{
f2517201
GS
1786#ifndef PERL_USE_SAFE_PUTENV
1787 /* most putenv()s leak, so we manipulate environ directly */
79072805 1788 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1789
3280af22 1790 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW
1791 I32 j;
1792 I32 max;
fe14fcc3
LW
1793 char **tmpenv;
1794
de3bb511 1795 /*SUPPRESS 530*/
fe14fcc3 1796 for (max = i; environ[max]; max++) ;
f2517201
GS
1797 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1798 for (j=0; j<max; j++) { /* copy environment */
1799 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1800 strcpy(tmpenv[j], environ[j]);
1801 }
fe14fcc3
LW
1802 tmpenv[max] = Nullch;
1803 environ = tmpenv; /* tell exec where it is now */
1804 }
a687059c 1805 if (!val) {
f2517201 1806 safesysfree(environ[i]);
a687059c
LW
1807 while (environ[i]) {
1808 environ[i] = environ[i+1];
1809 i++;
1810 }
1811 return;
1812 }
8d063cd8 1813 if (!environ[i]) { /* does not exist yet */
f2517201 1814 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW
1815 environ[i+1] = Nullch; /* make sure it's null terminated */
1816 }
fe14fcc3 1817 else
f2517201
GS
1818 safesysfree(environ[i]);
1819 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1820
62b28dd9 1821#ifndef MSDOS
a687059c 1822 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
62b28dd9
LW
1823#else
1824 /* MS-DOS requires environment variable names to be in uppercase */
fe14fcc3
LW
1825 /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but
1826 * some utilities and applications may break because they only look
1827 * for upper case strings. (Fixed strupr() bug here.)]
1828 */
1829 strcpy(environ[i],nam); strupr(environ[i]);
62b28dd9
LW
1830 (void)sprintf(environ[i] + strlen(nam),"=%s",val);
1831#endif /* MSDOS */
f2517201
GS
1832
1833#else /* PERL_USE_SAFE_PUTENV */
1834 char *new_env;
1835
1836 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
1837#ifndef MSDOS
1838 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
1839#else
1840 strcpy(new_env,nam); strupr(new_env);
1841 (void)sprintf(new_env + strlen(nam),"=%s",val);
1842#endif
1843 (void)putenv(new_env);
1844#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW
1845}
1846
1cab015a
FE
1847#else /* WIN32 || CYGWIN32 */
1848#if defined(CYGWIN32)
1849/*
1850 * Save environ of perl.exe, currently Cygwin links in separate environ's
1851 * for each exe/dll. Probably should be a member of impure_ptr.
1852 */
1853static char ***Perl_main_environ;
1854
1855EXTERN_C void
1856Perl_my_setenv_init(char ***penviron)
1857{
1858 Perl_main_environ = penviron;
1859}
1860
1861void
1862my_setenv(char *nam, char *val)
1863{
1864 /* You can not directly manipulate the environ[] array because
1865 * the routines do some additional work that syncs the Cygwin
1866 * environment with the Windows environment.
1867 */
1868 char *oldstr = environ[setenv_getix(nam)];
1869
1870 if (!val) {
1871 if (!oldstr)
1872 return;
1873 unsetenv(nam);
1874 Safefree(oldstr);
1875 return;
1876 }
1877 setenv(nam, val, 1);
1878 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1879 if(oldstr && environ[setenv_getix(nam)] != oldstr)
1880 Safefree(oldstr);
1881}
3e3baf6d 1882#else /* if WIN32 */
68dc0745
PP
1883
1884void
864dbfa3 1885Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 1886{
3e3baf6d
TB
1887
1888#ifdef USE_WIN32_RTL_ENV
1889
68dc0745
PP
1890 register char *envstr;
1891 STRLEN namlen = strlen(nam);
3e3baf6d
TB
1892 STRLEN vallen;
1893 char *oldstr = environ[setenv_getix(nam)];
1894
1895 /* putenv() has totally broken semantics in both the Borland
1896 * and Microsoft CRTLs. They either store the passed pointer in
1897 * the environment without making a copy, or make a copy and don't
1898 * free it. And on top of that, they dont free() old entries that
1899 * are being replaced/deleted. This means the caller must
1900 * free any old entries somehow, or we end up with a memory
1901 * leak every time my_setenv() is called. One might think
1902 * one could directly manipulate environ[], like the UNIX code
1903 * above, but direct changes to environ are not allowed when
1904 * calling putenv(), since the RTLs maintain an internal
1905 * *copy* of environ[]. Bad, bad, *bad* stink.
1906 * GSAR 97-06-07
1907 */
68dc0745 1908
3e3baf6d
TB
1909 if (!val) {
1910 if (!oldstr)
1911 return;
1912 val = "";
1913 vallen = 0;
1914 }
1915 else
1916 vallen = strlen(val);
f2517201 1917 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 1918 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 1919 (void)PerlEnv_putenv(envstr);
3e3baf6d 1920 if (oldstr)
f2517201 1921 safesysfree(oldstr);
3e3baf6d 1922#ifdef _MSC_VER
f2517201 1923 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB
1924#endif
1925
1926#else /* !USE_WIN32_RTL_ENV */
1927
ac5c734f
GS
1928 register char *envstr;
1929 STRLEN len = strlen(nam) + 3;
1930 if (!val) {
1931 val = "";
1932 }
1933 len += strlen(val);
1934 New(904, envstr, len, char);
1935 (void)sprintf(envstr,"%s=%s",nam,val);
1936 (void)PerlEnv_putenv(envstr);
1937 Safefree(envstr);
3e3baf6d
TB
1938
1939#endif
1940}
1941
1942#endif /* WIN32 */
1cab015a 1943#endif
3e3baf6d
TB
1944
1945I32
864dbfa3 1946Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB
1947{
1948 register I32 i, len = strlen(nam);
1949
1950 for (i = 0; environ[i]; i++) {
1951 if (
1952#ifdef WIN32
1953 strnicmp(environ[i],nam,len) == 0
1954#else
1955 strnEQ(environ[i],nam,len)
1956#endif
1957 && environ[i][len] == '=')
1958 break; /* strnEQ must come first to avoid */
1959 } /* potential SEGV's */
1960 return i;
68dc0745
PP
1961}
1962
a0d0e21e 1963#endif /* !VMS */
378cc40b 1964
16d20bd9 1965#ifdef UNLINK_ALL_VERSIONS
79072805 1966I32
864dbfa3 1967Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 1968{
79072805 1969 I32 i;
378cc40b 1970
6ad3d225 1971 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW
1972 return i ? 0 : -1;
1973}
1974#endif
1975
85e6fe83 1976#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 1977char *
864dbfa3 1978Perl_my_bcopy(pTHX_ register const char *from,register char *to,register I32 len)
378cc40b
LW
1979{
1980 char *retval = to;
1981
7c0587c8
LW
1982 if (from - to >= 0) {
1983 while (len--)
1984 *to++ = *from++;
1985 }
1986 else {
1987 to += len;
1988 from += len;
1989 while (len--)
faf8582f 1990 *(--to) = *(--from);
7c0587c8 1991 }
378cc40b
LW
1992 return retval;
1993}
ffed7fef 1994#endif
378cc40b 1995
fc36a67e
PP
1996#ifndef HAS_MEMSET
1997void *
864dbfa3 1998Perl_my_memset(pTHX_ register char *loc, register I32 ch, register I32 len)
fc36a67e
PP
1999{
2000 char *retval = loc;
2001
2002 while (len--)
2003 *loc++ = ch;
2004 return retval;
2005}
2006#endif
2007
7c0587c8 2008#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 2009char *
864dbfa3 2010Perl_my_bzero(pTHX_ register char *loc, register I32 len)
378cc40b
LW
2011{
2012 char *retval = loc;
2013
2014 while (len--)
2015 *loc++ = 0;
2016 return retval;
2017}
2018#endif
7c0587c8 2019
36477c24 2020#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2021I32
864dbfa3 2022Perl_my_memcmp(pTHX_ const char *s1, const char *s2, register I32 len)
7c0587c8 2023{
36477c24
PP
2024 register U8 *a = (U8 *)s1;
2025 register U8 *b = (U8 *)s2;
79072805 2026 register I32 tmp;
7c0587c8
LW
2027
2028 while (len--) {
36477c24 2029 if (tmp = *a++ - *b++)
7c0587c8
LW
2030 return tmp;
2031 }
2032 return 0;
2033}
36477c24 2034#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2035
fe14fcc3 2036#ifndef HAS_VPRINTF
a687059c 2037
85e6fe83 2038#ifdef USE_CHAR_VSPRINTF
a687059c
LW
2039char *
2040#else
2041int
2042#endif
08105a92 2043vsprintf(char *dest, const char *pat, char *args)
a687059c
LW
2044{
2045 FILE fakebuf;
2046
2047 fakebuf._ptr = dest;
2048 fakebuf._cnt = 32767;
35c8bce7
LW
2049#ifndef _IOSTRG
2050#define _IOSTRG 0
2051#endif
a687059c
LW
2052 fakebuf._flag = _IOWRT|_IOSTRG;
2053 _doprnt(pat, args, &fakebuf); /* what a kludge */
2054 (void)putc('\0', &fakebuf);
85e6fe83 2055#ifdef USE_CHAR_VSPRINTF
a687059c
LW
2056 return(dest);
2057#else
2058 return 0; /* perl doesn't use return value */
2059#endif
2060}
2061
fe14fcc3 2062#endif /* HAS_VPRINTF */
a687059c
LW
2063
2064#ifdef MYSWAP
ffed7fef 2065#if BYTEORDER != 0x4321
a687059c 2066short
864dbfa3 2067Perl_my_swap(pTHX_ short s)
a687059c
LW
2068{
2069#if (BYTEORDER & 1) == 0
2070 short result;
2071
2072 result = ((s & 255) << 8) + ((s >> 8) & 255);
2073 return result;
2074#else
2075 return s;
2076#endif
2077}
2078
2079long
864dbfa3 2080Perl_my_htonl(pTHX_ long l)
a687059c
LW
2081{
2082 union {
2083 long result;
ffed7fef 2084 char c[sizeof(long)];
a687059c
LW
2085 } u;
2086
ffed7fef 2087#if BYTEORDER == 0x1234
a687059c
LW
2088 u.c[0] = (l >> 24) & 255;
2089 u.c[1] = (l >> 16) & 255;
2090 u.c[2] = (l >> 8) & 255;
2091 u.c[3] = l & 255;
2092 return u.result;
2093#else
ffed7fef 2094#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2095 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2096#else
79072805
LW
2097 register I32 o;
2098 register I32 s;
a687059c 2099
ffed7fef
LW
2100 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2101 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW
2102 }
2103 return u.result;
2104#endif
2105#endif
2106}
2107
2108long
864dbfa3 2109Perl_my_ntohl(pTHX_ long l)
a687059c
LW
2110{
2111 union {
2112 long l;
ffed7fef 2113 char c[sizeof(long)];
a687059c
LW
2114 } u;
2115
ffed7fef 2116#if BYTEORDER == 0x1234
a687059c
LW
2117 u.c[0] = (l >> 24) & 255;
2118 u.c[1] = (l >> 16) & 255;
2119 u.c[2] = (l >> 8) & 255;
2120 u.c[3] = l & 255;
2121 return u.l;
2122#else
ffed7fef 2123#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2124 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2125#else
79072805
LW
2126 register I32 o;
2127 register I32 s;
a687059c
LW
2128
2129 u.l = l;
2130 l = 0;
ffed7fef
LW
2131 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2132 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW
2133 }
2134 return l;
2135#endif
2136#endif
2137}
2138
ffed7fef 2139#endif /* BYTEORDER != 0x4321 */
988174c1
LW
2140#endif /* MYSWAP */
2141
2142/*
2143 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2144 * If these functions are defined,
2145 * the BYTEORDER is neither 0x1234 nor 0x4321.
2146 * However, this is not assumed.
2147 * -DWS
2148 */
2149
2150#define HTOV(name,type) \
2151 type \
ba106d47 2152 name (register type n) \
988174c1
LW
2153 { \
2154 union { \
2155 type value; \
2156 char c[sizeof(type)]; \
2157 } u; \
79072805
LW
2158 register I32 i; \
2159 register I32 s; \
988174c1
LW
2160 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2161 u.c[i] = (n >> s) & 0xFF; \
2162 } \
2163 return u.value; \
2164 }
2165
2166#define VTOH(name,type) \
2167 type \
ba106d47 2168 name (register type n) \
988174c1
LW
2169 { \
2170 union { \
2171 type value; \
2172 char c[sizeof(type)]; \
2173 } u; \
79072805
LW
2174 register I32 i; \
2175 register I32 s; \
988174c1
LW
2176 u.value = n; \
2177 n = 0; \
2178 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2179 n += (u.c[i] & 0xFF) << s; \
2180 } \
2181 return n; \
2182 }
2183
2184#if defined(HAS_HTOVS) && !defined(htovs)
2185HTOV(htovs,short)
2186#endif
2187#if defined(HAS_HTOVL) && !defined(htovl)
2188HTOV(htovl,long)
2189#endif
2190#if defined(HAS_VTOHS) && !defined(vtohs)
2191VTOH(vtohs,short)
2192#endif
2193#if defined(HAS_VTOHL) && !defined(vtohl)
2194VTOH(vtohl,long)
2195#endif
a687059c 2196
5f05dabc 2197 /* VMS' my_popen() is in VMS.c, same with OS/2. */
4d2c4e07 2198#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC)
760ac839 2199PerlIO *
864dbfa3 2200Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW
2201{
2202 int p[2];
8ac85365 2203 register I32 This, that;
79072805
LW
2204 register I32 pid;
2205 SV *sv;
1738f5c4 2206 I32 doexec = strNE(cmd,"-");
e446cec8
IZ
2207 I32 did_pipes = 0;
2208 int pp[2];
a687059c 2209
45bc9206 2210 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ
2211#ifdef OS2
2212 if (doexec) {
2213 return my_syspopen(cmd,mode);
2214 }
2215#endif
8ac85365
NIS
2216 This = (*mode == 'w');
2217 that = !This;
3280af22 2218 if (doexec && PL_tainting) {
bbce6d69
PP
2219 taint_env();
2220 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2221 }
c2267164
IZ
2222 if (PerlProc_pipe(p) < 0)
2223 return Nullfp;
e446cec8
IZ
2224 if (doexec && PerlProc_pipe(pp) >= 0)
2225 did_pipes = 1;
a687059c
LW
2226 while ((pid = (doexec?vfork():fork())) < 0) {
2227 if (errno != EAGAIN) {
6ad3d225 2228 PerlLIO_close(p[This]);
e446cec8
IZ
2229 if (did_pipes) {
2230 PerlLIO_close(pp[0]);
2231 PerlLIO_close(pp[1]);
2232 }
a687059c 2233 if (!doexec)
cea2e8a9 2234 Perl_croak(aTHX_ "Can't fork");
a687059c
LW
2235 return Nullfp;
2236 }
2237 sleep(5);
2238 }
2239 if (pid == 0) {
79072805
LW
2240 GV* tmpgv;
2241
30ac6d9b
GS
2242#undef THIS
2243#undef THAT
a687059c 2244#define THIS that
8ac85365 2245#define THAT This
6ad3d225 2246 PerlLIO_close(p[THAT]);
e446cec8
IZ
2247 if (did_pipes) {
2248 PerlLIO_close(pp[0]);
2249#if defined(HAS_FCNTL) && defined(F_SETFD)
2250 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2251#endif
2252 }
a687059c 2253 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS
2254 PerlLIO_dup2(p[THIS], *mode == 'r');
2255 PerlLIO_close(p[THIS]);
a687059c 2256 }
4435c477 2257#ifndef OS2
a687059c 2258 if (doexec) {
a0d0e21e 2259#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW
2260 int fd;
2261
2262#ifndef NOFILE
2263#define NOFILE 20
2264#endif
6b88bc9c 2265 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ
2266 if (fd != pp[1])
2267 PerlLIO_close(fd);
ae986130 2268#endif
e446cec8 2269 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2270 PerlProc__exit(1);
a687059c 2271 }
4435c477 2272#endif /* defined OS2 */
de3bb511 2273 /*SUPPRESS 560*/
85e6fe83 2274 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
1e422769 2275 sv_setiv(GvSV(tmpgv), (IV)getpid());
3280af22
NIS
2276 PL_forkprocess = 0;
2277 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW
2278 return Nullfp;
2279#undef THIS
2280#undef THAT
2281 }
62b28dd9 2282 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2283 PerlLIO_close(p[that]);
e446cec8
IZ
2284 if (did_pipes)
2285 PerlLIO_close(pp[1]);
8ac85365 2286 if (p[that] < p[This]) {
6ad3d225
GS
2287 PerlLIO_dup2(p[This], p[that]);
2288 PerlLIO_close(p[This]);
8ac85365 2289 p[This] = p[that];
62b28dd9 2290 }
3280af22 2291 sv = *av_fetch(PL_fdpid,p[This],TRUE);
a0d0e21e 2292 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2293 SvIVX(sv) = pid;
3280af22 2294 PL_forkprocess = pid;
e446cec8
IZ
2295 if (did_pipes && pid > 0) {
2296 int errkid;
2297 int n = 0, n1;
2298
2299 while (n < sizeof(int)) {
2300 n1 = PerlLIO_read(pp[0],
2301 (void*)(((char*)&errkid)+n),
2302 (sizeof(int)) - n);
2303 if (n1 <= 0)
2304 break;
2305 n += n1;
2306 }
2307 if (n) { /* Error */
2308 if (n != sizeof(int))
cea2e8a9 2309 Perl_croak(aTHX_ "panic: kid popen errno read");
e446cec8
IZ
2310 PerlLIO_close(pp[0]);
2311 errno = errkid; /* Propagate errno from kid */
2312 return Nullfp;
2313 }
2314 }
2315 if (did_pipes)
2316 PerlLIO_close(pp[0]);
8ac85365 2317 return PerlIO_fdopen(p[This], mode);
a687059c 2318}
7c0587c8 2319#else
55497cff 2320#if defined(atarist) || defined(DJGPP)
7c0587c8 2321FILE *popen();
760ac839 2322PerlIO *
864dbfa3 2323Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2324{
760ac839 2325 /* Needs work for PerlIO ! */
55497cff 2326 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 2327 PERL_FLUSHALL_FOR_CHILD;
55497cff 2328 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW
2329}
2330#endif
2331
2332#endif /* !DOSISH */
a687059c 2333
748a9306 2334#ifdef DUMP_FDS
35ff7856 2335void
864dbfa3 2336Perl_dump_fds(pTHX_ char *s)
ae986130
LW
2337{
2338 int fd;
2339 struct stat tmpstatbuf;
2340
760ac839 2341 PerlIO_printf(PerlIO_stderr(),"%s", s);
ae986130 2342 for (fd = 0; fd < 32; fd++) {
6ad3d225 2343 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
760ac839 2344 PerlIO_printf(PerlIO_stderr()," %d",fd);
ae986130 2345 }
760ac839 2346 PerlIO_printf(PerlIO_stderr(),"\n");
ae986130 2347}
35ff7856 2348#endif /* DUMP_FDS */
ae986130 2349
fe14fcc3 2350#ifndef HAS_DUP2
fec02dd3 2351int
ba106d47 2352dup2(int oldfd, int newfd)
a687059c 2353{
a0d0e21e 2354#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD
2355 if (oldfd == newfd)
2356 return oldfd;
6ad3d225 2357 PerlLIO_close(newfd);
fec02dd3 2358 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2359#else
fc36a67e
PP
2360#define DUP2_MAX_FDS 256
2361 int fdtmp[DUP2_MAX_FDS];
79072805 2362 I32 fdx = 0;
ae986130
LW
2363 int fd;
2364
fe14fcc3 2365 if (oldfd == newfd)
fec02dd3 2366 return oldfd;
6ad3d225 2367 PerlLIO_close(newfd);
fc36a67e 2368 /* good enough for low fd's... */
6ad3d225 2369 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2370 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2371 PerlLIO_close(fd);
fc36a67e
PP
2372 fd = -1;
2373 break;
2374 }
ae986130 2375 fdtmp[fdx++] = fd;
fc36a67e 2376 }
ae986130 2377 while (fdx > 0)
6ad3d225 2378 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2379 return fd;
62b28dd9 2380#endif
a687059c
LW
2381}
2382#endif
2383
ff68c719
PP
2384
2385#ifdef HAS_SIGACTION
2386
2387Sighandler_t
864dbfa3 2388Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719
PP
2389{
2390 struct sigaction act, oact;
2391
2392 act.sa_handler = handler;
2393 sigemptyset(&act.sa_mask);
2394 act.sa_flags = 0;
2395#ifdef SA_RESTART
2396 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2397#endif
85264bed
CS
2398#ifdef SA_NOCLDWAIT
2399 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2400 act.sa_flags |= SA_NOCLDWAIT;
2401#endif
ff68c719 2402 if (sigaction(signo, &act, &oact) == -1)
36477c24 2403 return SIG_ERR;
ff68c719 2404 else
36477c24 2405 return oact.sa_handler;
ff68c719
PP
2406}
2407
2408Sighandler_t
864dbfa3 2409Perl_rsignal_state(pTHX_ int signo)
ff68c719
PP
2410{
2411 struct sigaction oact;
2412
2413 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2414 return SIG_ERR;
2415 else
2416 return oact.sa_handler;
2417}
2418
2419int
864dbfa3 2420Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719
PP
2421{
2422 struct sigaction act;
2423
2424 act.sa_handler = handler;
2425 sigemptyset(&act.sa_mask);
2426 act.sa_flags = 0;
2427#ifdef SA_RESTART
2428 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2429#endif
85264bed
CS
2430#ifdef SA_NOCLDWAIT
2431 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2432 act.sa_flags |= SA_NOCLDWAIT;
2433#endif
ff68c719
PP
2434 return sigaction(signo, &act, save);
2435}
2436
2437int
864dbfa3 2438Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719
PP
2439{
2440 return sigaction(signo, save, (struct sigaction *)NULL);
2441}
2442
2443#else /* !HAS_SIGACTION */
2444
2445Sighandler_t
864dbfa3 2446Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2447{
6ad3d225 2448 return PerlProc_signal(signo, handler);
ff68c719
PP
2449}
2450
2451static int sig_trapped;
2452
2453static
2454Signal_t
4e35701f 2455sig_trap(int signo)
ff68c719
PP
2456{
2457 sig_trapped++;
2458}
2459
2460Sighandler_t
864dbfa3 2461Perl_rsignal_state(pTHX_ int signo)
ff68c719
PP
2462{
2463 Sighandler_t oldsig;
2464
2465 sig_trapped = 0;
6ad3d225
GS
2466 oldsig = PerlProc_signal(signo, sig_trap);
2467 PerlProc_signal(signo, oldsig);
ff68c719 2468 if (sig_trapped)
6ad3d225 2469 PerlProc_kill(getpid(), signo);
ff68c719
PP
2470 return oldsig;
2471}
2472
2473int
864dbfa3 2474Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2475{
6ad3d225 2476 *save = PerlProc_signal(signo, handler);
ff68c719
PP
2477 return (*save == SIG_ERR) ? -1 : 0;
2478}
2479
2480int
864dbfa3 2481Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2482{
6ad3d225 2483 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719
PP
2484}
2485
2486#endif /* !HAS_SIGACTION */
2487
5f05dabc 2488 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
4d2c4e07 2489#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC)
79072805 2490I32
864dbfa3 2491Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2492{
ff68c719 2493 Sigsave_t hstat, istat, qstat;
a687059c 2494 int status;
a0d0e21e 2495 SV **svp;
20188a90 2496 int pid;
1d3434b8 2497 int pid2;
03136e13
CS
2498 bool close_failed;
2499 int saved_errno;
2500#ifdef VMS
2501 int saved_vaxc_errno;
2502#endif
22fae026
TM
2503#ifdef WIN32
2504 int saved_win32_errno;
2505#endif
a687059c 2506
3280af22 2507 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
748a9306 2508 pid = (int)SvIVX(*svp);
a0d0e21e 2509 SvREFCNT_dec(*svp);
3280af22 2510 *svp = &PL_sv_undef;
ddcf38b7
IZ
2511#ifdef OS2
2512 if (pid == -1) { /* Opened by popen. */
2513 return my_syspclose(ptr);
2514 }
2515#endif
03136e13
CS
2516 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2517 saved_errno = errno;
2518#ifdef VMS
2519 saved_vaxc_errno = vaxc$errno;
2520#endif
22fae026
TM
2521#ifdef WIN32
2522 saved_win32_errno = GetLastError();
2523#endif
03136e13 2524 }
7c0587c8 2525#ifdef UTS
6ad3d225 2526 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2527#endif
ff68c719
PP
2528 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2529 rsignal_save(SIGINT, SIG_IGN, &istat);
2530 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306 2531 do {
1d3434b8
GS
2532 pid2 = wait4pid(pid, &status, 0);
2533 } while (pid2 == -1 && errno == EINTR);
ff68c719
PP
2534 rsignal_restore(SIGHUP, &hstat);
2535 rsignal_restore(SIGINT, &istat);
2536 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS
2537 if (close_failed) {
2538 SETERRNO(saved_errno, saved_vaxc_errno);
2539 return -1;
2540 }
1d3434b8 2541 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2542}
4633a7c4
LW
2543#endif /* !DOSISH */
2544
8736538c 2545#if !defined(DOSISH) || defined(OS2) || defined(WIN32) || defined(CYGWIN32)
79072805 2546I32
864dbfa3 2547Perl_wait4pid(pTHX_ int pid, int *statusp, int flags)
20188a90 2548{
79072805
LW
2549 SV *sv;
2550 SV** svp;
fc36a67e 2551 char spid[TYPE_CHARS(int)];
20188a90
LW
2552
2553 if (!pid)
2554 return -1;
20188a90
LW
2555 if (pid > 0) {
2556 sprintf(spid, "%d", pid);
3280af22
NIS
2557 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2558 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2559 *statusp = SvIVX(*svp);
3280af22 2560 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2561 return pid;
2562 }
2563 }
2564 else {
79072805 2565 HE *entry;
20188a90 2566
3280af22
NIS
2567 hv_iterinit(PL_pidstatus);
2568 if (entry = hv_iternext(PL_pidstatus)) {
a0d0e21e 2569 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2570 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2571 *statusp = SvIVX(sv);
20188a90 2572 sprintf(spid, "%d", pid);
3280af22 2573 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2574 return pid;
2575 }
2576 }
79072805 2577#ifdef HAS_WAITPID
367f3c24
IZ
2578# ifdef HAS_WAITPID_RUNTIME
2579 if (!HAS_WAITPID_RUNTIME)
2580 goto hard_way;
2581# endif
f55ee38a 2582 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ
2583#endif
2584#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2585 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ
2586#endif
2587#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2588 hard_way:
a0d0e21e
LW
2589 {
2590 I32 result;
2591 if (flags)
cea2e8a9 2592 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2593 else {
76e3520e 2594 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW
2595 pidgone(result,*statusp);
2596 if (result < 0)
2597 *statusp = -1;
2598 }
2599 return result;
a687059c
LW
2600 }
2601#endif
a687059c 2602}
2d7a9237 2603#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2604
7c0587c8 2605void
de3bb511 2606/*SUPPRESS 590*/
864dbfa3 2607Perl_pidgone(pTHX_ int pid, int status)
a687059c 2608{
79072805 2609 register SV *sv;
fc36a67e 2610 char spid[TYPE_CHARS(int)];
a687059c 2611
20188a90 2612 sprintf(spid, "%d", pid);
3280af22 2613 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2614 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2615 SvIVX(sv) = status;
20188a90 2616 return;
a687059c
LW
2617}
2618
55497cff 2619#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2620int pclose();
ddcf38b7
IZ
2621#ifdef HAS_FORK
2622int /* Cannot prototype with I32
2623 in os2ish.h. */
ba106d47 2624my_syspclose(PerlIO *ptr)
ddcf38b7 2625#else
79072805 2626I32
864dbfa3 2627Perl_my_pclose(pTHX_ PerlIO *ptr)
ddcf38b7 2628#endif
a687059c 2629{
760ac839
LW
2630 /* Needs work for PerlIO ! */
2631 FILE *f = PerlIO_findFILE(ptr);
2632 I32 result = pclose(f);
2633 PerlIO_releaseFILE(ptr,f);
2634 return result;
a687059c 2635}
7c0587c8 2636#endif
9f68db38
LW
2637
2638void
864dbfa3 2639Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2640{
79072805 2641 register I32 todo;
08105a92 2642 register const char *frombase = from;
9f68db38
LW
2643
2644 if (len == 1) {
08105a92 2645 register const char c = *from;
9f68db38 2646 while (count-- > 0)
5926133d 2647 *to++ = c;
9f68db38
LW
2648 return;
2649 }
2650 while (count-- > 0) {
2651 for (todo = len; todo > 0; todo--) {
2652 *to++ = *from++;
2653 }
2654 from = frombase;
2655 }
2656}
0f85fab0 2657
463ee0b2 2658U32
65202027 2659Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW
2660{
2661 long along;
2662
27e2fb84 2663#if CASTFLAGS & 2
34de22dd
LW
2664# define BIGDOUBLE 2147483648.0
2665 if (f >= BIGDOUBLE)
2666 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2667#endif
0f85fab0
LW
2668 if (f >= 0.0)
2669 return (unsigned long)f;
2670 along = (long)f;
2671 return (unsigned long)along;
2672}
ed6116ce 2673# undef BIGDOUBLE
5d94fbed 2674
5d94fbed
AD
2675/* Unfortunately, on some systems the cast_uv() function doesn't
2676 work with the system-supplied definition of ULONG_MAX. The
2677 comparison (f >= ULONG_MAX) always comes out true. It must be a
2678 problem with the compiler constant folding.
2679
2680 In any case, this workaround should be fine on any two's complement
2681 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2682 ccflags.
2683 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2684*/
1eb770ff
PP
2685
2686/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2687 of LONG_(MIN/MAX).
2688 -- Kenneth Albanowski <kjahds@kjahds.com>
2689*/
2690
20cec16a
PP
2691#ifndef MY_UV_MAX
2692# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD
2693#endif
2694
ed6116ce 2695I32
65202027 2696Perl_cast_i32(pTHX_ NV f)
ed6116ce 2697{
20cec16a
PP
2698 if (f >= I32_MAX)
2699 return (I32) I32_MAX;
2700 if (f <= I32_MIN)
2701 return (I32) I32_MIN;
ed6116ce
LW
2702 return (I32) f;
2703}
a0d0e21e
LW
2704
2705IV
65202027 2706Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2707{
25da4f38
IZ
2708 if (f >= IV_MAX) {
2709 UV uv;
2710
65202027 2711 if (f >= (NV)UV_MAX)
25da4f38
IZ
2712 return (IV) UV_MAX;
2713 uv = (UV) f;
2714 return (IV)uv;
2715 }
20cec16a
PP
2716 if (f <= IV_MIN)
2717 return (IV) IV_MIN;
a0d0e21e
LW
2718 return (IV) f;
2719}
5d94fbed
AD
2720
2721UV
65202027 2722Perl_cast_uv(pTHX_ NV f)
5d94fbed 2723{
20cec16a
PP
2724 if (f >= MY_UV_MAX)
2725 return (UV) MY_UV_MAX;
25da4f38
IZ
2726 if (f < 0) {
2727 IV iv;
2728
2729 if (f < IV_MIN)
2730 return (UV)IV_MIN;
2731 iv = (IV) f;
2732 return (UV) iv;
2733 }
5d94fbed
AD
2734 return (UV) f;
2735}
2736
fe14fcc3 2737#ifndef HAS_RENAME
79072805 2738I32
864dbfa3 2739Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2740{
93a17b20
LW
2741 char *fa = strrchr(a,'/');
2742 char *fb = strrchr(b,'/');
62b28dd9
LW
2743 struct stat tmpstatbuf1;
2744 struct stat tmpstatbuf2;
46fc3d4c 2745 SV *tmpsv = sv_newmortal();
62b28dd9
LW
2746
2747 if (fa)
2748 fa++;
2749 else
2750 fa = a;
2751 if (fb)
2752 fb++;
2753 else
2754 fb = b;
2755 if (strNE(a,b))
2756 return FALSE;
2757 if (fa == a)
46fc3d4c 2758 sv_setpv(tmpsv, ".");
62b28dd9 2759 else
46fc3d4c 2760 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2761 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW
2762 return FALSE;
2763 if (fb == b)
46fc3d4c 2764 sv_setpv(tmpsv, ".");
62b28dd9 2765 else
46fc3d4c 2766 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2767 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW
2768 return FALSE;
2769 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2770 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2771}
fe14fcc3
LW
2772#endif /* !HAS_RENAME */
2773
55497cff 2774UV
864dbfa3 2775Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
4f19785b
WSI
2776{
2777 register char *s = start;
2778 register UV retval = 0;
2779 bool overflowed = FALSE;
2780 while (len && *s >= '0' && *s <= '1') {
f248d071
GS
2781 register UV n = retval << 1;
2782 if (!overflowed && (n >> 1) != retval) {
2783 dTHR;
2784 if (ckWARN_d(WARN_UNSAFE))
2785 Perl_warner(aTHX_ WARN_UNSAFE, "Integer overflow in binary number");
2786 overflowed = TRUE;
2787 }
2788 retval = n | (*s++ - '0');
2789 len--;
4f19785b 2790 }
6529e8bd 2791 if (len && (*s >= '2' && *s <= '9')) {
4f19785b
WSI
2792 dTHR;
2793 if (ckWARN(WARN_UNSAFE))
cea2e8a9 2794 Perl_warner(aTHX_ WARN_UNSAFE, "Illegal binary digit '%c' ignored", *s);
4f19785b
WSI
2795 }
2796 *retlen = s - start;
2797 return retval;
2798}
2799UV
864dbfa3 2800Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2801{
2802 register char *s = start;
55497cff
PP
2803 register UV retval = 0;
2804 bool overflowed = FALSE;
fe14fcc3 2805
748a9306 2806 while (len && *s >= '0' && *s <= '7') {
55497cff 2807 register UV n = retval << 3;
f248d071
GS
2808 if (!overflowed && (n >> 3) != retval) {
2809 dTHR;
2810 if (ckWARN_d(WARN_UNSAFE))
2811 Perl_warner(aTHX_ WARN_UNSAFE, "Integer overflow in octal number");
55497cff
PP
2812 overflowed = TRUE;
2813 }
2814 retval = n | (*s++ - '0');
748a9306 2815 len--;
fe14fcc3 2816 }
d008e5eb
GS
2817 if (len && (*s == '8' || *s == '9')) {
2818 dTHR;
2819 if (ckWARN(WARN_OCTAL))
cea2e8a9 2820 Perl_warner(aTHX_ WARN_OCTAL, "Illegal octal digit '%c' ignored", *s);
d008e5eb 2821 }
fe14fcc3
LW
2822 *retlen = s - start;
2823 return retval;
2824}
2825
71be2cbc 2826UV
864dbfa3 2827Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2828{
2829 register char *s = start;
55497cff
PP
2830 register UV retval = 0;
2831 bool overflowed = FALSE;
6ff81951 2832 char *tmp = s;
a0ed51b3 2833 register UV n;
fe14fcc3 2834
a0ed51b3
LW
2835 while (len-- && *s) {
2836 tmp = strchr((char *) PL_hexdigit, *s++);
2837 if (!tmp) {
e3fdf988 2838 if (*(s-1) == '_' || (*(s-1) == 'x' && retval == 0))
a0ed51b3
LW
2839 continue;
2840 else {
d008e5eb 2841 dTHR;
a0ed51b3 2842 --s;
599cee73 2843 if (ckWARN(WARN_UNSAFE))
cea2e8a9 2844 Perl_warner(aTHX_ WARN_UNSAFE,"Illegal hex digit '%c' ignored", *s);
a0ed51b3
LW
2845 break;
2846 }
2847 }
2848 n = retval << 4;
f248d071 2849 if (!overflowed && (n >> 4) != retval) {
0453d815 2850 dTHR;
f248d071
GS
2851 if (ckWARN_d(WARN_UNSAFE))
2852 Perl_warner(aTHX_ WARN_UNSAFE, "Integer overflow in hex number");
2853 overflowed = TRUE;
55497cff 2854 }
3280af22 2855 retval = n | ((tmp - PL_hexdigit) & 15);
6ff81951 2856 }
fe14fcc3
LW
2857 *retlen = s - start;
2858 return retval;
2859}
760ac839 2860
491527d0 2861char*
864dbfa3 2862Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0
GS
2863{
2864 dTHR;
2865 char *xfound = Nullch;
2866 char *xfailed = Nullch;
0f31cffe 2867 char tmpbuf[MAXPATHLEN];
491527d0
GS
2868 register char *s;
2869 I32 len;
2870 int retval;
2871#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
2872# define SEARCH_EXTS ".bat", ".cmd", NULL
2873# define MAX_EXT_LEN 4
2874#endif
2875#ifdef OS2
2876# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
2877# define MAX_EXT_LEN 4
2878#endif
2879#ifdef VMS
2880# define SEARCH_EXTS ".pl", ".com", NULL
2881# define MAX_EXT_LEN 4
2882#endif
2883 /* additional extensions to try in each dir if scriptname not found */
2884#ifdef SEARCH_EXTS
2885 char *exts[] = { SEARCH_EXTS };
2886 char **ext = search_ext ? search_ext : exts;
2887 int extidx = 0, i = 0;
2888 char *curext = Nullch;
2889#else
2890# define MAX_EXT_LEN 0
2891#endif
2892
2893 /*
2894 * If dosearch is true and if scriptname does not contain path
2895 * delimiters, search the PATH for scriptname.
2896 *
2897 * If SEARCH_EXTS is also defined, will look for each
2898 * scriptname{SEARCH_EXTS} whenever scriptname is not found
2899 * while searching the PATH.
2900 *
2901 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
2902 * proceeds as follows:
2903 * If DOSISH or VMSISH:
2904 * + look for ./scriptname{,.foo,.bar}
2905 * + search the PATH for scriptname{,.foo,.bar}
2906 *
2907 * If !DOSISH:
2908 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
2909 * this will not look in '.' if it's not in the PATH)
2910 */
84486fc6 2911 tmpbuf[0] = '\0';
491527d0
GS
2912
2913#ifdef VMS
2914# ifdef ALWAYS_DEFTYPES
2915 len = strlen(scriptname);
2916 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
2917 int hasdir, idx = 0, deftypes = 1;
2918 bool seen_dot = 1;
2919
2920 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
2921# else
2922 if (dosearch) {
2923 int hasdir, idx = 0, deftypes = 1;
2924 bool seen_dot = 1;
2925
2926 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
2927# endif
2928 /* The first time through, just add SEARCH_EXTS to whatever we
2929 * already have, so we can check for default file types. */
2930 while (deftypes ||
84486fc6 2931 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS
2932 {
2933 if (deftypes) {
2934 deftypes = 0;
84486fc6 2935 *tmpbuf = '\0';
491527d0 2936 }
84486fc6
GS
2937 if ((strlen(tmpbuf) + strlen(scriptname)
2938 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 2939 continue; /* don't search dir with too-long name */
84486fc6 2940 strcat(tmpbuf, scriptname);
491527d0
GS
2941#else /* !VMS */
2942
2943#ifdef DOSISH
2944 if (strEQ(scriptname, "-"))
2945 dosearch = 0;
2946 if (dosearch) { /* Look in '.' first. */
2947 char *cur = scriptname;
2948#ifdef SEARCH_EXTS
2949 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
2950 while (ext[i])
2951 if (strEQ(ext[i++],curext)) {
2952 extidx = -1; /* already has an ext */
2953 break;
2954 }
2955 do {
2956#endif
2957 DEBUG_p(PerlIO_printf(Perl_debug_log,
2958 "Looking for %s\n",cur));
017f25f1
IZ
2959 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
2960 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS
2961 dosearch = 0;
2962 scriptname = cur;
2963#ifdef SEARCH_EXTS
2964 break;
2965#endif
2966 }
2967#ifdef SEARCH_EXTS
2968 if (cur == scriptname) {
2969 len = strlen(scriptname);
84486fc6 2970 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 2971 break;
84486fc6 2972 cur = strcpy(tmpbuf, scriptname);
491527d0
GS
2973 }
2974 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 2975 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS
2976#endif
2977 }
2978#endif
2979
2980 if (dosearch && !strchr(scriptname, '/')
2981#ifdef DOSISH
2982 && !strchr(scriptname, '\\')
2983#endif
2984 && (s = PerlEnv_getenv("PATH"))) {
2985 bool seen_dot = 0;
2986
3280af22
NIS
2987 PL_bufend = s + strlen(s);
2988 while (s < PL_bufend) {
491527d0
GS
2989#if defined(atarist) || defined(DOSISH)
2990 for (len = 0; *s
2991# ifdef atarist
2992 && *s != ','
2993# endif
2994 && *s != ';'; len++, s++) {
84486fc6
GS
2995 if (len < sizeof tmpbuf)
2996 tmpbuf[len] = *s;
491527d0 2997 }
84486fc6
GS
2998 if (len < sizeof tmpbuf)
2999 tmpbuf[len] = '\0';
491527d0 3000#else /* ! (atarist || DOSISH) */
3280af22 3001 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS
3002 ':',
3003 &len);
3004#endif /* ! (atarist || DOSISH) */
3280af22 3005 if (s < PL_bufend)
491527d0 3006 s++;
84486fc6 3007 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0
GS
3008 continue; /* don't search dir with too-long name */
3009 if (len
61ae2fbf 3010#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS
3011 && tmpbuf[len - 1] != '/'
3012 && tmpbuf[len - 1] != '\\'
491527d0
GS
3013#endif
3014 )
84486fc6
GS
3015 tmpbuf[len++] = '/';
3016 if (len == 2 && tmpbuf[0] == '.')
491527d0 3017 seen_dot = 1;
84486fc6 3018 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS
3019#endif /* !VMS */
3020
3021#ifdef SEARCH_EXTS
84486fc6 3022 len = strlen(tmpbuf);
491527d0
GS
3023 if (extidx > 0) /* reset after previous loop */
3024 extidx = 0;
3025 do {
3026#endif
84486fc6 3027 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3028 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ
3029 if (S_ISDIR(PL_statbuf.st_mode)) {
3030 retval = -1;
3031 }
491527d0
GS
3032#ifdef SEARCH_EXTS
3033 } while ( retval < 0 /* not there */
3034 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3035 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS
3036 );
3037#endif
3038 if (retval < 0)
3039 continue;
3280af22
NIS
3040 if (S_ISREG(PL_statbuf.st_mode)
3041 && cando(S_IRUSR,TRUE,&PL_statbuf)
491527d0 3042#ifndef DOSISH
3280af22 3043 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS
3044#endif
3045 )
3046 {
84486fc6 3047 xfound = tmpbuf; /* bingo! */
491527d0
GS
3048 break;
3049 }
3050 if (!xfailed)
84486fc6 3051 xfailed = savepv(tmpbuf);
491527d0
GS
3052 }
3053#ifndef DOSISH
017f25f1
IZ
3054 if (!xfound && !seen_dot && !xfailed &&
3055 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3056 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS
3057#endif
3058 seen_dot = 1; /* Disable message. */
9ccb31f9
GS
3059 if (!xfound) {
3060 if (flags & 1) { /* do or die? */
cea2e8a9 3061 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS
3062 (xfailed ? "execute" : "find"),
3063 (xfailed ? xfailed : scriptname),
3064 (xfailed ? "" : " on PATH"),
3065 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3066 }
3067 scriptname = Nullch;
3068 }
491527d0
GS
3069 if (xfailed)
3070 Safefree(xfailed);
3071 scriptname = xfound;
3072 }
9ccb31f9 3073 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS
3074}
3075
3076
11343788 3077#ifdef USE_THREADS
12ca11f6
MB
3078#ifdef FAKE_THREADS
3079/* Very simplistic scheduler for now */
3080void
3081schedule(void)
3082{
c7848ba1 3083 thr = thr->i.next_run;
12ca11f6
MB
3084}
3085
3086void
864dbfa3 3087Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB
3088{
3089 *cp = 0;
3090}
3091
3092void
864dbfa3 3093Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3094{
51dd5992 3095 perl_os_thread t;
12ca11f6
MB
3096 perl_cond cond = *cp;
3097
3098 if (!cond)
3099 return;
3100 t = cond->thread;
3101 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
3102 t->i.next_run = thr->i.next_run;
3103 thr->i.next_run->i.prev_run = t;
3104 t->i.prev_run = thr;
3105 thr->i.next_run = t;
3106 thr->i.wait_queue = 0;
12ca11f6
MB
3107 /* Remove from the wait queue */
3108 *cp = cond->next;
3109 Safefree(cond);
3110}
3111
3112void
864dbfa3 3113Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3114{
51dd5992 3115 perl_os_thread t;
12ca11f6
MB
3116 perl_cond cond, cond_next;
3117
3118 for (cond = *cp; cond; cond = cond_next) {
3119 t = cond->thread;
3120 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
3121 t->i.next_run = thr->i.next_run;
3122 thr->i.next_run->i.prev_run = t;
3123 t->i.prev_run = thr;
3124 thr->i.next_run = t;
3125 thr->i.wait_queue = 0;
12ca11f6
MB
3126 /* Remove from the wait queue */
3127 cond_next = cond->next;
3128 Safefree(cond);
3129 }
3130 *cp = 0;
3131}
3132
3133void
864dbfa3 3134Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB
3135{
3136 perl_cond cond;
3137
c7848ba1 3138 if (thr->i.next_run == thr)
cea2e8a9 3139 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
12ca11f6 3140
0f15f207 3141 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB
3142 cond->thread = thr;
3143 cond->next = *cp;
3144 *cp = cond;
c7848ba1 3145 thr->i.wait_queue = cond;
12ca11f6 3146 /* Remove ourselves from runnable queue */
c7848ba1
MB
3147 thr->i.next_run->i.prev_run = thr->i.prev_run;
3148 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB
3149}
3150#endif /* FAKE_THREADS */
3151
0d85d877 3152#ifdef PTHREAD_GETSPECIFIC_INT
52e1cb5e 3153struct perl_thread *
864dbfa3 3154Perl_getTHR(pTHX)
11343788
MB
3155{
3156 pthread_addr_t t;
3157
6b88bc9c 3158 if (pthread_getspecific(PL_thr_key, &t))
cea2e8a9 3159 Perl_croak(aTHX_ "panic: pthread_getspecific");
52e1cb5e 3160 return (struct perl_thread *) t;
11343788 3161}
0d85d877 3162#endif
f93b4edd
MB
3163
3164MAGIC *
864dbfa3 3165Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB
3166{
3167 MAGIC *mg;
3168
3169 SvUPGRADE(sv, SVt_PVMG);
3170 mg = mg_find(sv, 'm');
3171 if (!mg) {
3172 condpair_t *cp;
3173
3174 New(53, cp, 1, condpair_t);
3175 MUTEX_INIT(&cp->mutex);
3176 COND_INIT(&cp->owner_cond);
3177 COND_INIT(&cp->cond);
3178 cp->owner = 0;
28a8573f 3179 MUTEX_LOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB
3180 mg = mg_find(sv, 'm');
3181 if (mg) {
3182 /* someone else beat us to initialising it */
28a8573f 3183 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB
3184 MUTEX_DESTROY(&cp->mutex);
3185 COND_DESTROY(&cp->owner_cond);
3186 COND_DESTROY(&cp->cond);
3187 Safefree(cp);
3188 }
3189 else {
3190 sv_magic(sv, Nullsv, 'm', 0, 0);
3191 mg = SvMAGIC(sv);
3192 mg->mg_ptr = (char *)cp;
565764a8 3193 mg->mg_len = sizeof(cp);
28a8573f 3194 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
8b73bbec 3195 DEBUG_S(WITH_THR(PerlIO_printf(PerlIO_stderr(),
c7848ba1 3196 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB
3197 }
3198 }
3199 return mg;
3200}
a863c7d1
MB
3201
3202/*
199100c8
MB
3203 * Make a new perl thread structure using t as a prototype. Some of the
3204 * fields for the new thread are copied from the prototype thread, t,
3205 * so t should not be running in perl at the time this function is
3206 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3207 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3208 */
52e1cb5e 3209struct perl_thread *
864dbfa3 3210Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3211{
c5be433b 3212#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3213 struct perl_thread *thr;
cea2e8a9 3214#endif
a863c7d1 3215 SV *sv;
199100c8
MB
3216 SV **svp;
3217 I32 i;
3218
79cb57f6 3219 sv = newSVpvn("", 0);
52e1cb5e
JH
3220 SvGROW(sv, sizeof(struct perl_thread) + 1);
3221 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3222 thr = (Thread) SvPVX(sv);
949ced2d 3223#ifdef DEBUGGING
52e1cb5e 3224 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS
3225 PL_markstack = 0;
3226 PL_scopestack = 0;
3227 PL_savestack = 0;
3228 PL_retstack = 0;
3229 PL_dirty = 0;
3230 PL_localizing = 0;
949ced2d
GS
3231 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3232#else
3233 Zero(thr, 1, struct perl_thread);
3234#endif
199100c8 3235
0b94c7bb 3236 PL_protect = MEMBER_TO_FPTR(Perl_default_protect);
312caa8e 3237
199100c8 3238 thr->oursv = sv;
cea2e8a9 3239 init_stacks();
a863c7d1 3240
533c011a 3241 PL_curcop = &PL_compiling;
c5be433b 3242 thr->interp = t->interp;
199100c8 3243 thr->cvcache = newHV();
54b9620d 3244 thr->threadsv = newAV();
a863c7d1 3245 thr->specific = newAV();
79cb57f6 3246 thr->errsv = newSVpvn("", 0);
38a03e6e 3247 thr->errhv = newHV();
a863c7d1
MB
3248 thr->flags = THRf_R_JOINABLE;
3249 MUTEX_INIT(&thr->mutex);
199100c8 3250
d55594ae
GS
3251 /* top_env needs to be non-zero. It points to an area
3252 in which longjmp() stuff is stored, as C callstack
3253 info there at least is thread specific this has to
3254 be per-thread. Otherwise a 'die' in a thread gives
3255 that thread the C stack of last thread to do an eval {}!
3256 See comments in scope.h
3257 Initialize top entry (as in perl.c for main thread)
3258 */
533c011a
NIS
3259 PL_start_env.je_prev = NULL;
3260 PL_start_env.je_ret = -1;
3261 PL_start_env.je_mustcatch = TRUE;
3262 PL_top_env = &PL_start_env;
3263
faef0170 3264 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
533c011a
NIS
3265 PL_restartop = 0;
3266
b099ddc0
GS
3267 PL_statname = NEWSV(66,0);
3268 PL_maxscream = -1;
0b94c7bb
GS
3269 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3270 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3271 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3272 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3273 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
b099ddc0
GS
3274 PL_regindent = 0;
3275 PL_reginterp_cnt = 0;
3276 PL_lastscream = Nullsv;
3277 PL_screamfirst = 0;
3278 PL_screamnext = 0;
3279 PL_reg_start_tmp = 0;
3280 PL_reg_start_tmpl = 0;
3281
3282 /* parent thread's data needs to be locked while we make copy */
3283 MUTEX_LOCK(&t->mutex);
3284
312caa8e
CS
3285 PL_protect = t->Tprotect;
3286
b099ddc0
GS
3287 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3288 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3289 PL_curstash = t->Tcurstash; /* always be set to main? */
3290
6b88bc9c 3291 PL_tainted = t->Ttainted;
84fee439
NIS
3292 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3293 PL_nrs = newSVsv(t->Tnrs);
3294 PL_rs = SvREFCNT_inc(PL_nrs);
3295 PL_last_in_gv = Nullgv;
3296 PL_ofslen = t->Tofslen;
3297 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3298 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3299 PL_chopset = t->Tchopset;
3300 PL_formtarget = newSVsv(t->Tformtarget);
3301 PL_bodytarget = newSVsv(t->Tbodytarget);
3302 PL_toptarget = newSVsv(t->Ttoptarget);
533c011a 3303
54b9620d
MB
3304 /* Initialise all per-thread SVs that the template thread used */
3305 svp = AvARRAY(t->threadsv);
93965878 3306 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 3307 if (*svp && *svp != &PL_sv_undef) {
199100c8 3308 SV *sv = newSVsv(*svp);
54b9620d 3309 av_store(thr->threadsv, i, sv);
533c011a 3310 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
8b73bbec 3311 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
54b9620d 3312 "new_struct_thread: copied threadsv %d %p->%p\n",i, t, thr));
199100c8
MB
3313 }
3314 }
940cb80d 3315 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 3316
533c011a
NIS
3317 MUTEX_LOCK(&PL_threads_mutex);
3318 PL_nthreads++;
3319 thr->tid = ++PL_threadnum;
199100c8
MB
3320 thr->next = t->next;
3321 thr->prev = t;
3322 t->next = thr;
3323 thr->next->prev = thr;
533c011a 3324 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 3325
b099ddc0
GS
3326 /* done copying parent's state */
3327 MUTEX_UNLOCK(&t->mutex);
3328
a863c7d1 3329#ifdef HAVE_THREAD_INTERN
4f63d024 3330 Perl_init_thread_intern(thr);
a863c7d1 3331#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB
3332 return thr;
3333}
11343788 3334#endif /* USE_THREADS */
760ac839
LW
3335
3336#ifdef HUGE_VAL
3337/*
3338 * This hack is to force load of "huge" support from libm.a
3339 * So it is in perl for (say) POSIX to use.
3340 * Needed for SunOS with Sun's 'acc' for example.
3341 */
65202027 3342NV
8ac85365 3343Perl_huge(void)
760ac839
LW
3344{
3345 return HUGE_VAL;
3346}
3347#endif
4e35701f 3348
22239a37
NIS
3349#ifdef PERL_GLOBAL_STRUCT
3350struct perl_vars *
864dbfa3 3351Perl_GetVars(pTHX)
22239a37 3352{
533c011a 3353 return &PL_Vars;
22239a37 3354}
31fb1209
NIS
3355#endif
3356
3357char **
864dbfa3 3358Perl_get_op_names(pTHX)
31fb1209 3359{
22c35a8c 3360 return PL_op_name;
31fb1209
NIS
3361}
3362
3363char **
864dbfa3 3364Perl_get_op_descs(pTHX)
31fb1209 3365{
22c35a8c 3366 return PL_op_desc;
31fb1209 3367}
9e6b2b00
GS
3368
3369char *
864dbfa3 3370Perl_get_no_modify(pTHX)
9e6b2b00 3371{
22c35a8c 3372 return (char*)PL_no_modify;
9e6b2b00
GS
3373}
3374
3375U32 *
864dbfa3 3376Perl_get_opargs(pTHX)
9e6b2b00 3377{
22c35a8c 3378 return PL_opargs;
9e6b2b00 3379}
51aa15f3 3380
0cb96387
GS
3381PPADDR_t*
3382Perl_get_ppaddr(pTHX)
3383{
3384 return &PL_ppaddr;
3385}
3386
a6c40364
GS
3387#ifndef HAS_GETENV_LEN
3388char *
864dbfa3 3389Perl_getenv_len(pTHX_ char *env_elem, unsigned long *len)
a6c40364
GS
3390{
3391 char *env_trans = PerlEnv_getenv(env_elem);
3392 if (env_trans)
3393 *len = strlen(env_trans);
3394 return env_trans;
f675dbe5
CB
3395}
3396#endif
3397
dc9e4912
GS
3398
3399MGVTBL*
864dbfa3 3400Perl_get_vtbl(pTHX_ int vtbl_id)
dc9e4912
GS
3401{
3402 MGVTBL* result = Null(MGVTBL*);
3403
3404 switch(vtbl_id) {
3405 case want_vtbl_sv:
3406 result = &PL_vtbl_sv;
3407 break;
3408 case want_vtbl_env:
3409 result = &PL_vtbl_env;
3410 break;
3411 case want_vtbl_envelem:
3412 result = &PL_vtbl_envelem;
3413 break;
3414 case want_vtbl_sig:
3415 result = &PL_vtbl_sig;
3416 break;
3417 case want_vtbl_sigelem:
3418 result = &PL_vtbl_sigelem;
3419 break;
3420 case want_vtbl_pack:
3421 result = &PL_vtbl_pack;
3422 break;
3423 case want_vtbl_packelem:
3424 result = &PL_vtbl_packelem;
3425 break;
3426 case want_vtbl_dbline:
3427 result = &PL_vtbl_dbline;
3428 break;
3429 case want_vtbl_isa:
3430 result = &PL_vtbl_isa;
3431 break;
3432 case want_vtbl_isaelem:
3433 result = &PL_vtbl_isaelem;
3434 break;
3435 case want_vtbl_arylen:
3436 result = &PL_vtbl_arylen;
3437 break;
3438 case want_vtbl_glob:
3439 result = &PL_vtbl_glob;
3440 break;
3441 case want_vtbl_mglob:
3442 result = &PL_vtbl_mglob;
3443 break;
3444 case want_vtbl_nkeys:
3445 result = &PL_vtbl_nkeys;
3446 break;
3447 case want_vtbl_taint:
3448 result = &PL_vtbl_taint;
3449 break;
3450 case want_vtbl_substr:
3451 result = &PL_vtbl_substr;
3452 break;
3453 case want_vtbl_vec:
3454 result = &PL_vtbl_vec;
3455 break;
3456 case want_vtbl_pos:
3457 result = &PL_vtbl_pos;
3458 break;
3459 case want_vtbl_bm:
3460 result = &PL_vtbl_bm;
3461 break;
3462 case want_vtbl_fm:
3463 result = &PL_vtbl_fm;
3464 break;
3465 case want_vtbl_uvar:
3466 result = &PL_vtbl_uvar;
3467 break;
3468#ifdef USE_THREADS
3469 case want_vtbl_mutex:
3470 result = &PL_vtbl_mutex;
3471 break;
3472#endif
3473 case want_vtbl_defelem:
3474 result = &PL_vtbl_defelem;
3475 break;
3476 case want_vtbl_regexp:
3477 result = &PL_vtbl_regexp;
3478 break;
3479 case want_vtbl_regdata:
3480 result = &PL_vtbl_regdata;
3481 break;
3482 case want_vtbl_regdatum:
3483 result = &PL_vtbl_regdatum;
3484 break;
3c90161d 3485#ifdef USE_LOCALE_COLLATE
dc9e4912
GS
3486 case want_vtbl_collxfrm:
3487 result = &PL_vtbl_collxfrm;
3488 break;
3c90161d 3489#endif
dc9e4912
GS
3490 case want_vtbl_amagic:
3491 result = &PL_vtbl_amagic;
3492 break;
3493 case want_vtbl_amagicelem:
3494 result = &PL_vtbl_amagicelem;
3495 break;
810b8aa5
GS
3496 case want_vtbl_backref:
3497 result = &PL_vtbl_backref;
3498 break;
dc9e4912
GS
3499 }
3500 return result;
3501}
3502
767df6a1 3503I32
864dbfa3 3504Perl_my_fflush_all(pTHX)
767df6a1
JH
3505{
3506#ifdef FFLUSH_NULL
ce720889 3507 return PerlIO_flush(NULL);
767df6a1
JH
3508#else
3509 long open_max = -1;
ed39a0f2 3510# if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
d2201af2
AD
3511# ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3512 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3513# else
767df6a1
JH
3514# if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3515 open_max = sysconf(_SC_OPEN_MAX);
3516# else
3517# ifdef FOPEN_MAX
d2201af2 3518 open_max = FOPEN_MAX;
767df6a1
JH
3519# else
3520# ifdef OPEN_MAX
d2201af2 3521 open_max = OPEN_MAX;
767df6a1
JH
3522# else
3523# ifdef _NFILE
d2201af2 3524 open_max = _NFILE;
767df6a1
JH
3525# endif
3526# endif
3527# endif
3528# endif
d2201af2 3529# endif
767df6a1
JH
3530 if (open_max > 0) {
3531 long i;
3532 for (i = 0; i < open_max; i++)
d2201af2
AD
3533 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3534 STDIO_STREAM_ARRAY[i]._file < open_max &&
3535 STDIO_STREAM_ARRAY[i]._flag)
3536 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
767df6a1
JH
3537 return 0;
3538 }
3539# endif
3540 SETERRNO(EBADF,RMS$_IFI);
3541 return EOF;
3542#endif
3543}
097ee67d 3544
65202027 3545NV
5b877257 3546Perl_my_atof(pTHX_ const char* s) {
097ee67d 3547#ifdef USE_LOCALE_NUMERIC
d43ce814 3548 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
65202027 3549 NV x, y;
097ee67d 3550
65202027 3551 x = Perl_atof(s);
097ee67d 3552 SET_NUMERIC_STANDARD();
65202027 3553 y = Perl_atof(s);
097ee67d
JH
3554 SET_NUMERIC_LOCAL();
3555 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3556 return y;
3557 return x;
65202027
DS
3558 }
3559 else
3560 return Perl_atof(s);
097ee67d 3561#else
65202027 3562 return Perl_atof(s);
097ee67d
JH
3563#endif
3564}