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change#3612 was buggy and failed to build Tk; applied Ilya's
[perl5.git] / util.c
CommitLineData
a0d0e21e 1/* util.c
a687059c 2 *
4eb8286e 3 * Copyright (c) 1991-1999, Larry Wall
a687059c 4 *
d48672a2
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
8d063cd8 7 *
8d063cd8 8 */
a0d0e21e
LW		 9
10/*
11 * "Very useful, no doubt, that was to Saruman; yet it seems that he was
12 * not content." --Gandalf
13 */
8d063cd8 14
8d063cd8 15#include "EXTERN.h"
864dbfa3 16#define PERL_IN_UTIL_C
8d063cd8 17#include "perl.h"
62b28dd9 18
e1dfb34b 19#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
a687059c 20#include <signal.h>
62b28dd9 21#endif
a687059c 22
36477c24 23#ifndef SIG_ERR
24# define SIG_ERR ((Sighandler_t) -1)
25#endif
26
bd4080b3 27/* XXX If this causes problems, set i_unistd=undef in the hint file. */
85e6fe83 28#ifdef I_UNISTD
8990e307
LW		 29# include <unistd.h>
30#endif
31
a687059c
LW		 32#ifdef I_VFORK
33# include <vfork.h>
34#endif
35
94b6baf5
AD		 36/* Put this after #includes because fork and vfork prototypes may
37 conflict.
38*/
39#ifndef HAS_VFORK
40# define vfork fork
41#endif
42
fe14fcc3
LW		 43#ifdef I_FCNTL
44# include <fcntl.h>
45#endif
46#ifdef I_SYS_FILE
47# include <sys/file.h>
48#endif
49
ff68c719 50#ifdef I_SYS_WAIT
51# include <sys/wait.h>
52#endif
53
097ee67d
JH		 54#ifdef I_LOCALE
55# include <locale.h>
56#endif
57
8d063cd8 58#define FLUSH
8d063cd8 59
a0d0e21e 60#ifdef LEAKTEST
a0d0e21e 61
8c52afec
IZ		 62long xcount[MAXXCOUNT];
63long lastxcount[MAXXCOUNT];
64long xycount[MAXXCOUNT][MAXYCOUNT];
65long lastxycount[MAXXCOUNT][MAXYCOUNT];
66
a0d0e21e 67#endif
a863c7d1 68
16cebae2
GS		 69#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
70# define FD_CLOEXEC 1 /* NeXT needs this */
71#endif
72
f2517201 73/* paranoid version of system's malloc() */
8d063cd8 74
a687059c
LW		 75/* NOTE: Do not call the next three routines directly. Use the macros
76 * in handy.h, so that we can easily redefine everything to do tracking of
77 * allocated hunks back to the original New to track down any memory leaks.
20cec16a 78 * XXX This advice seems to be widely ignored :-( --AD August 1996.
a687059c
LW		 79 */
80
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 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 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 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 209 if (ptr != Nullch) {
210 memset((void*)ptr, 0, size);
211 return ptr;
212 }
3280af22 213 else if (PL_nomemok)
1050c9ca 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 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 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 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 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 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 482/*
483 * Set up for a new ctype locale.
484 */
55497cff 485void
864dbfa3 486Perl_new_ctype(pTHX_ const char *newctype)
ef7eada9 487{
36477c24 488#ifdef USE_LOCALE_CTYPE
489
bbce6d69 490 int i;
ef7eada9 491
bbce6d69 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 501#endif /* USE_LOCALE_CTYPE */
502}
bbce6d69 503
504/*
505 * Set up for a new collation locale.
506 */
507void
864dbfa3 508Perl_new_collate(pTHX_ const char *newcoll)
bbce6d69 509{
36477c24 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 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 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 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 569/*
570 * Set up for a new numeric locale.
571 */
572void
864dbfa3 573Perl_new_numeric(pTHX_ const char *newnum)
bbce6d69 574{
36477c24 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 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 594
595#endif /* USE_LOCALE_NUMERIC */
bbce6d69 596}
597
598void
864dbfa3 599Perl_set_numeric_standard(pTHX)
bbce6d69 600{
5f05dabc 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 608
609#endif /* USE_LOCALE_NUMERIC */
bbce6d69 610}
611
612void
864dbfa3 613Perl_set_numeric_local(pTHX)
bbce6d69 614{
5f05dabc 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 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 644#endif /* USE_LOCALE_CTYPE */
645#ifdef USE_LOCALE_COLLATE
bbce6d69 646 char *curcoll = NULL;
36477c24 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 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 711#endif /* USE_LOCALE_CTYPE */
712#ifdef USE_LOCALE_COLLATE
0644c9cb
IS		 713 if (! (curcoll = setlocale(LC_COLLATE, "")))
714 setlocale_failure = TRUE;
36477c24 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 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 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 741#endif /* USE_LOCALE_CTYPE */
742#ifdef USE_LOCALE_COLLATE
bbce6d69 743 if (! curcoll)
5f05dabc 744 PerlIO_printf(PerlIO_stderr(), "LC_COLLATE ");
36477c24 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 750 PerlIO_printf(PerlIO_stderr(), "\n");
751
5f05dabc 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 766 "\tLC_ALL = %c%s%c,\n",
767 lc_all ? '"' : '(',
768 lc_all ? lc_all : "unset",
769 lc_all ? '"' : ')');
5f05dabc 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 779 }
780 }
781
ef7eada9 782 PerlIO_printf(PerlIO_stderr(),
bbce6d69 783 "\tLANG = %c%s%c\n",
5f05dabc 784 lang ? '"' : '(',
bbce6d69 785 lang ? lang : "unset",
786 lang ? '"' : ')');
ef7eada9 787
bbce6d69 788 PerlIO_printf(PerlIO_stderr(),
789 " are supported and installed on your system.\n");
5f05dabc 790 }
ef7eada9 791
5f05dabc 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 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 807#else /* ! LC_ALL */
808
809 if (0
36477c24 810#ifdef USE_LOCALE_CTYPE
5f05dabc 811 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24 812#endif /* USE_LOCALE_CTYPE */
813#ifdef USE_LOCALE_COLLATE
5f05dabc 814 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24 815#endif /* USE_LOCALE_COLLATE */
816#ifdef USE_LOCALE_NUMERIC
5f05dabc 817 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 818#endif /* USE_LOCALE_NUMERIC */
5f05dabc 819 )
820 {
821 if (locwarn)
bbce6d69 822 PerlIO_printf(PerlIO_stderr(),
5f05dabc 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 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 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 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 875{
876 char *xbuf;
76e3520e 877 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69 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 884 if (! xbuf)
885 goto bad;
886
3280af22
NIS		 887 *(U32*)xbuf = PL_collation_ix;
888 xout = sizeof(PL_collation_ix);
bbce6d69 889 for (xin = 0; xin < len; ) {
890 SSize_t xused;
891
892 for (;;) {
76e3520e 893 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69 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 900 if (! xbuf)
901 goto bad;
902 }
ef7eada9 903
bbce6d69 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 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 1239 if (big[pos-previous] != first)
1240 continue;
1241 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69 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 1258 if (big[pos] != first)
1259 continue;
1260 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69 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 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 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 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 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 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 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 1363 return sv;
1364}
1365
cea2e8a9
GS		 1366#ifdef PERL_IMPLICIT_CONTEXT
1367char *
1368Perl_form_nocontext(const char* pat, ...)
1369{
1370 dTHX;
1371 SV *sv = mess_alloc();
1372 va_list args;
1373 va_start(args, pat);
1374 sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
1375 va_end(args);
1376 return SvPVX(sv);
1377}
1378#endif
1379
8990e307 1380char *
864dbfa3 1381Perl_form(pTHX_ const char* pat, ...)
8990e307 1382{
e72dc28c 1383 SV *sv = mess_alloc();
46fc3d4c 1384 va_list args;
46fc3d4c 1385 va_start(args, pat);
e72dc28c 1386 sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
46fc3d4c 1387 va_end(args);
e72dc28c 1388 return SvPVX(sv);
46fc3d4c 1389}
a687059c 1390
06bf62c7 1391SV *
864dbfa3 1392Perl_mess(pTHX_ const char *pat, va_list *args)
46fc3d4c 1393{
e72dc28c 1394 SV *sv = mess_alloc();
46fc3d4c 1395 static char dgd[] = " during global destruction.\n";
1396
fc36a67e 1397 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1398 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1399 dTHR;
515f54a1 1400 if (PL_curcop->cop_line)
cea2e8a9 1401 Perl_sv_catpvf(aTHX_ sv, " at %_ line %ld",
515f54a1
GS		 1402 GvSV(PL_curcop->cop_filegv), (long)PL_curcop->cop_line);
1403 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1404 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1405 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
cea2e8a9 1406 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %ld",
515f54a1
GS		 1407 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1408 line_mode ? "line" : "chunk",
1409 (long)IoLINES(GvIOp(PL_last_in_gv)));
a687059c 1410 }
515f54a1 1411 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1412 }
06bf62c7 1413 return sv;
a687059c
LW		 1414}
1415
0cb96387
GS		 1416STATIC OP *
1417S_do_die(pTHX_ const char* pat, va_list *args)
36477c24 1418{
5dc0d613 1419 dTHR;
36477c24 1420 char *message;
3280af22 1421 int was_in_eval = PL_in_eval;
36477c24 1422 HV *stash;
1423 GV *gv;
1424 CV *cv;
06bf62c7
GS		 1425 SV *msv;
1426 STRLEN msglen;
36477c24 1427
8b73bbec 1428 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
199100c8 1429 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1430 thr, PL_curstack, PL_mainstack));
36477c24 1431
06bf62c7 1432 if (pat) {
cea2e8a9 1433 msv = mess(pat, args);
06bf62c7
GS		 1434 message = SvPV(msv,msglen);
1435 }
1436 else {
1437 message = Nullch;
1438 }
36477c24 1439
8b73bbec 1440 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
199100c8 1441 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1442 thr, message, PL_diehook));
3280af22 1443 if (PL_diehook) {
cea2e8a9 1444 /* sv_2cv might call Perl_croak() */
3280af22 1445 SV *olddiehook = PL_diehook;
1738f5c4 1446 ENTER;
3280af22
NIS		 1447 SAVESPTR(PL_diehook);
1448 PL_diehook = Nullsv;
1738f5c4
CS		 1449 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1450 LEAVE;
1451 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1452 dSP;
774d564b 1453 SV *msg;
1454
1455 ENTER;
79cb57f6 1456 if (message) {
06bf62c7 1457 msg = newSVpvn(message, msglen);
4e6ea2c3
GS		 1458 SvREADONLY_on(msg);
1459 SAVEFREESV(msg);
1460 }
1461 else {
1462 msg = ERRSV;
1463 }
1738f5c4 1464
e788e7d3 1465 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1466 PUSHMARK(SP);
1738f5c4
CS		 1467 XPUSHs(msg);
1468 PUTBACK;
864dbfa3 1469 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1470 POPSTACK;
774d564b 1471 LEAVE;
1738f5c4 1472 }
36477c24 1473 }
1474
06bf62c7 1475 PL_restartop = die_where(message, msglen);
8b73bbec 1476 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
7c06b590 1477 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1478 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1479 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1480 JMPENV_JUMP(3);
3280af22 1481 return PL_restartop;
36477c24 1482}
1483
cea2e8a9
GS		 1484#ifdef PERL_IMPLICIT_CONTEXT
1485OP *
1486Perl_die_nocontext(const char* pat, ...)
a687059c 1487{
cea2e8a9
GS		 1488 dTHX;
1489 OP *o;
a687059c 1490 va_list args;
cea2e8a9 1491 va_start(args, pat);
5b877257 1492 o = do_die(pat, &args);
cea2e8a9
GS		 1493 va_end(args);
1494 return o;
1495}
1496#endif
1497
1498OP *
1499Perl_die(pTHX_ const char* pat, ...)
1500{
1501 OP *o;
1502 va_list args;
1503 va_start(args, pat);
5b877257 1504 o = do_die(pat, &args);
cea2e8a9
GS		 1505 va_end(args);
1506 return o;
1507}
1508
1509STATIC void
1510S_do_croak(pTHX_ const char* pat, va_list *args)
1511{
1512 dTHR;
de3bb511 1513 char *message;
748a9306
LW		 1514 HV *stash;
1515 GV *gv;
1516 CV *cv;
06bf62c7
GS		 1517 SV *msv;
1518 STRLEN msglen;
a687059c 1519
cea2e8a9 1520 msv = mess(pat, args);
06bf62c7 1521 message = SvPV(msv,msglen);
8b73bbec 1522 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
3280af22 1523 if (PL_diehook) {
cea2e8a9 1524 /* sv_2cv might call Perl_croak() */
3280af22 1525 SV *olddiehook = PL_diehook;
1738f5c4 1526 ENTER;
3280af22
NIS		 1527 SAVESPTR(PL_diehook);
1528 PL_diehook = Nullsv;
20cec16a 1529 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS		 1530 LEAVE;
1531 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1532 dSP;
774d564b 1533 SV *msg;
1534
1535 ENTER;
06bf62c7 1536 msg = newSVpvn(message, msglen);
774d564b 1537 SvREADONLY_on(msg);
1538 SAVEFREESV(msg);
20cec16a 1539
e788e7d3 1540 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1541 PUSHMARK(SP);
1738f5c4 1542 XPUSHs(msg);
20cec16a 1543 PUTBACK;
864dbfa3 1544 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1545 POPSTACK;
774d564b 1546 LEAVE;
20cec16a 1547 }
748a9306 1548 }
3280af22 1549 if (PL_in_eval) {
06bf62c7 1550 PL_restartop = die_where(message, msglen);
6224f72b 1551 JMPENV_JUMP(3);
a0d0e21e 1552 }
d175a3f0
GS		 1553 {
1554#ifdef USE_SFIO
1555 /* SFIO can really mess with your errno */
1556 int e = errno;
1557#endif
06bf62c7 1558 PerlIO_write(PerlIO_stderr(), message, msglen);
d175a3f0
GS		 1559 (void)PerlIO_flush(PerlIO_stderr());
1560#ifdef USE_SFIO
1561 errno = e;
1562#endif
1563 }
f86702cc 1564 my_failure_exit();
a687059c
LW		 1565}
1566
cea2e8a9 1567#ifdef PERL_IMPLICIT_CONTEXT
8990e307 1568void
cea2e8a9 1569Perl_croak_nocontext(const char *pat, ...)
a687059c 1570{
cea2e8a9 1571 dTHX;
a687059c 1572 va_list args;
cea2e8a9
GS		 1573 va_start(args, pat);
1574 do_croak(pat, &args);
1575 /* NOTREACHED */
1576 va_end(args);
1577}
1578#endif /* PERL_IMPLICIT_CONTEXT */
1579
1580void
1581Perl_croak(pTHX_ const char *pat, ...)
1582{
1583 va_list args;
1584 va_start(args, pat);
1585 do_croak(pat, &args);
1586 /* NOTREACHED */
1587 va_end(args);
1588}
1589
1590STATIC void
1591S_do_warn(pTHX_ const char* pat, va_list *args)
1592{
de3bb511 1593 char *message;
748a9306
LW		 1594 HV *stash;
1595 GV *gv;
1596 CV *cv;
06bf62c7
GS		 1597 SV *msv;
1598 STRLEN msglen;
a687059c 1599
cea2e8a9 1600 msv = mess(pat, args);
06bf62c7 1601 message = SvPV(msv, msglen);
a687059c 1602
3280af22 1603 if (PL_warnhook) {
cea2e8a9 1604 /* sv_2cv might call Perl_warn() */
11343788 1605 dTHR;
3280af22 1606 SV *oldwarnhook = PL_warnhook;
1738f5c4 1607 ENTER;
3280af22
NIS		 1608 SAVESPTR(PL_warnhook);
1609 PL_warnhook = Nullsv;
20cec16a 1610 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS		 1611 LEAVE;
1612 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1613 dSP;
774d564b 1614 SV *msg;
1615
1616 ENTER;
06bf62c7 1617 msg = newSVpvn(message, msglen);
774d564b 1618 SvREADONLY_on(msg);
1619 SAVEFREESV(msg);
1620
e788e7d3 1621 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1622 PUSHMARK(SP);
774d564b 1623 XPUSHs(msg);
20cec16a 1624 PUTBACK;
864dbfa3 1625 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1626 POPSTACK;
774d564b 1627 LEAVE;
20cec16a 1628 return;
1629 }
748a9306 1630 }
06bf62c7 1631 PerlIO_write(PerlIO_stderr(), message, msglen);
a687059c 1632#ifdef LEAKTEST
8c52afec
IZ		 1633 DEBUG_L(*message == '!'
1634 ? (xstat(message[1]=='!'
1635 ? (message[2]=='!' ? 2 : 1)
1636 : 0)
1637 , 0)
1638 : 0);
a687059c 1639#endif
20cec16a 1640 (void)PerlIO_flush(PerlIO_stderr());
a687059c 1641}
8d063cd8 1642
cea2e8a9
GS		 1643#ifdef PERL_IMPLICIT_CONTEXT
1644void
1645Perl_warn_nocontext(const char *pat, ...)
1646{
1647 dTHX;
1648 va_list args;
1649 va_start(args, pat);
1650 do_warn(pat, &args);
1651 va_end(args);
1652}
1653#endif /* PERL_IMPLICIT_CONTEXT */
1654
1655void
1656Perl_warn(pTHX_ const char *pat, ...)
1657{
1658 va_list args;
1659 va_start(args, pat);
1660 do_warn(pat, &args);
1661 va_end(args);
1662}
1663
599cee73 1664void
864dbfa3 1665Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73 1666{
d008e5eb 1667 dTHR;
599cee73
PM		 1668 va_list args;
1669 char *message;
1670 HV *stash;
1671 GV *gv;
1672 CV *cv;
06bf62c7
GS		 1673 SV *msv;
1674 STRLEN msglen;
599cee73
PM		 1675
1676 va_start(args, pat);
06bf62c7
GS		 1677 msv = mess(pat, &args);
1678 message = SvPV(msv, msglen);
599cee73
PM		 1679 va_end(args);
1680
1681 if (ckDEAD(err)) {
1682#ifdef USE_THREADS
d008e5eb 1683 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
599cee73
PM		 1684#endif /* USE_THREADS */
1685 if (PL_diehook) {
cea2e8a9 1686 /* sv_2cv might call Perl_croak() */
599cee73
PM		 1687 SV *olddiehook = PL_diehook;
1688 ENTER;
1689 SAVESPTR(PL_diehook);
1690 PL_diehook = Nullsv;
1691 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1692 LEAVE;
1693 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1694 dSP;
1695 SV *msg;
1696
1697 ENTER;
06bf62c7 1698 msg = newSVpvn(message, msglen);
599cee73
PM		 1699 SvREADONLY_on(msg);
1700 SAVEFREESV(msg);
1701
1702 PUSHMARK(sp);
1703 XPUSHs(msg);
1704 PUTBACK;
864dbfa3 1705 call_sv((SV*)cv, G_DISCARD);
599cee73
PM		 1706
1707 LEAVE;
1708 }
1709 }
1710 if (PL_in_eval) {
06bf62c7 1711 PL_restartop = die_where(message, msglen);
599cee73
PM		 1712 JMPENV_JUMP(3);
1713 }
06bf62c7 1714 PerlIO_write(PerlIO_stderr(), message, msglen);
599cee73
PM		 1715 (void)PerlIO_flush(PerlIO_stderr());
1716 my_failure_exit();
1717
1718 }
1719 else {
1720 if (PL_warnhook) {
cea2e8a9 1721 /* sv_2cv might call Perl_warn() */
599cee73
PM		 1722 dTHR;
1723 SV *oldwarnhook = PL_warnhook;
1724 ENTER;
1725 SAVESPTR(PL_warnhook);
1726 PL_warnhook = Nullsv;
1727 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1728 LEAVE;
1729 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1730 dSP;
1731 SV *msg;
1732
1733 ENTER;
06bf62c7 1734 msg = newSVpvn(message, msglen);
599cee73
PM		 1735 SvREADONLY_on(msg);
1736 SAVEFREESV(msg);
1737
1738 PUSHMARK(sp);
1739 XPUSHs(msg);
1740 PUTBACK;
864dbfa3 1741 call_sv((SV*)cv, G_DISCARD);
599cee73
PM		 1742
1743 LEAVE;
1744 return;
1745 }
1746 }
06bf62c7 1747 PerlIO_write(PerlIO_stderr(), message, msglen);
599cee73
PM		 1748#ifdef LEAKTEST
1749 DEBUG_L(xstat());
1750#endif
1751 (void)PerlIO_flush(PerlIO_stderr());
1752 }
1753}
1754
a0d0e21e 1755#ifndef VMS /* VMS' my_setenv() is in VMS.c */
f89d6eaa 1756#if !defined(WIN32) && !defined(CYGWIN32)
8d063cd8 1757void
864dbfa3 1758Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1759{
f2517201
GS		 1760#ifndef PERL_USE_SAFE_PUTENV
1761 /* most putenv()s leak, so we manipulate environ directly */
79072805 1762 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1763
3280af22 1764 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW		 1765 I32 j;
1766 I32 max;
fe14fcc3
LW		 1767 char **tmpenv;
1768
de3bb511 1769 /*SUPPRESS 530*/
fe14fcc3 1770 for (max = i; environ[max]; max++) ;
f2517201
GS		 1771 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1772 for (j=0; j<max; j++) { /* copy environment */
1773 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1774 strcpy(tmpenv[j], environ[j]);
1775 }
fe14fcc3
LW		 1776 tmpenv[max] = Nullch;
1777 environ = tmpenv; /* tell exec where it is now */
1778 }
a687059c 1779 if (!val) {
f2517201 1780 safesysfree(environ[i]);
a687059c
LW		 1781 while (environ[i]) {
1782 environ[i] = environ[i+1];
1783 i++;
1784 }
1785 return;
1786 }
8d063cd8 1787 if (!environ[i]) { /* does not exist yet */
f2517201 1788 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW		 1789 environ[i+1] = Nullch; /* make sure it's null terminated */
1790 }
fe14fcc3 1791 else
f2517201
GS		 1792 safesysfree(environ[i]);
1793 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1794
62b28dd9 1795#ifndef MSDOS
a687059c 1796 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
62b28dd9
LW		 1797#else
1798 /* MS-DOS requires environment variable names to be in uppercase */
fe14fcc3
LW		 1799 /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but
1800 * some utilities and applications may break because they only look
1801 * for upper case strings. (Fixed strupr() bug here.)]
1802 */
1803 strcpy(environ[i],nam); strupr(environ[i]);
62b28dd9
LW		 1804 (void)sprintf(environ[i] + strlen(nam),"=%s",val);
1805#endif /* MSDOS */
f2517201
GS		 1806
1807#else /* PERL_USE_SAFE_PUTENV */
1808 char *new_env;
1809
1810 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
1811#ifndef MSDOS
1812 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
1813#else
1814 strcpy(new_env,nam); strupr(new_env);
1815 (void)sprintf(new_env + strlen(nam),"=%s",val);
1816#endif
1817 (void)putenv(new_env);
1818#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW		 1819}
1820
1cab015a
EF		 1821#else /* WIN32 || CYGWIN32 */
1822#if defined(CYGWIN32)
1823/*
1824 * Save environ of perl.exe, currently Cygwin links in separate environ's
1825 * for each exe/dll. Probably should be a member of impure_ptr.
1826 */
1827static char ***Perl_main_environ;
1828
1829EXTERN_C void
1830Perl_my_setenv_init(char ***penviron)
1831{
1832 Perl_main_environ = penviron;
1833}
1834
1835void
1836my_setenv(char *nam, char *val)
1837{
1838 /* You can not directly manipulate the environ[] array because
1839 * the routines do some additional work that syncs the Cygwin
1840 * environment with the Windows environment.
1841 */
1842 char *oldstr = environ[setenv_getix(nam)];
1843
1844 if (!val) {
1845 if (!oldstr)
1846 return;
1847 unsetenv(nam);
1848 Safefree(oldstr);
1849 return;
1850 }
1851 setenv(nam, val, 1);
1852 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1853 if(oldstr && environ[setenv_getix(nam)] != oldstr)
1854 Safefree(oldstr);
1855}
3e3baf6d 1856#else /* if WIN32 */
68dc0745 1857
1858void
864dbfa3 1859Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 1860{
3e3baf6d
TB		 1861
1862#ifdef USE_WIN32_RTL_ENV
1863
68dc0745 1864 register char *envstr;
1865 STRLEN namlen = strlen(nam);
3e3baf6d
TB		 1866 STRLEN vallen;
1867 char *oldstr = environ[setenv_getix(nam)];
1868
1869 /* putenv() has totally broken semantics in both the Borland
1870 * and Microsoft CRTLs. They either store the passed pointer in
1871 * the environment without making a copy, or make a copy and don't
1872 * free it. And on top of that, they dont free() old entries that
1873 * are being replaced/deleted. This means the caller must
1874 * free any old entries somehow, or we end up with a memory
1875 * leak every time my_setenv() is called. One might think
1876 * one could directly manipulate environ[], like the UNIX code
1877 * above, but direct changes to environ are not allowed when
1878 * calling putenv(), since the RTLs maintain an internal
1879 * *copy* of environ[]. Bad, bad, *bad* stink.
1880 * GSAR 97-06-07
1881 */
68dc0745 1882
3e3baf6d
TB		 1883 if (!val) {
1884 if (!oldstr)
1885 return;
1886 val = "";
1887 vallen = 0;
1888 }
1889 else
1890 vallen = strlen(val);
f2517201 1891 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 1892 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 1893 (void)PerlEnv_putenv(envstr);
3e3baf6d 1894 if (oldstr)
f2517201 1895 safesysfree(oldstr);
3e3baf6d 1896#ifdef _MSC_VER
f2517201 1897 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB		 1898#endif
1899
1900#else /* !USE_WIN32_RTL_ENV */
1901
ac5c734f
GS		 1902 register char *envstr;
1903 STRLEN len = strlen(nam) + 3;
1904 if (!val) {
1905 val = "";
1906 }
1907 len += strlen(val);
1908 New(904, envstr, len, char);
1909 (void)sprintf(envstr,"%s=%s",nam,val);
1910 (void)PerlEnv_putenv(envstr);
1911 Safefree(envstr);
3e3baf6d
TB		 1912
1913#endif
1914}
1915
1916#endif /* WIN32 */
1cab015a 1917#endif
3e3baf6d
TB		 1918
1919I32
864dbfa3 1920Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB		 1921{
1922 register I32 i, len = strlen(nam);
1923
1924 for (i = 0; environ[i]; i++) {
1925 if (
1926#ifdef WIN32
1927 strnicmp(environ[i],nam,len) == 0
1928#else
1929 strnEQ(environ[i],nam,len)
1930#endif
1931 && environ[i][len] == '=')
1932 break; /* strnEQ must come first to avoid */
1933 } /* potential SEGV's */
1934 return i;
68dc0745 1935}
1936
a0d0e21e 1937#endif /* !VMS */
378cc40b 1938
16d20bd9 1939#ifdef UNLINK_ALL_VERSIONS
79072805 1940I32
864dbfa3 1941Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 1942{
79072805 1943 I32 i;
378cc40b 1944
6ad3d225 1945 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW		 1946 return i ? 0 : -1;
1947}
1948#endif
1949
85e6fe83 1950#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 1951char *
864dbfa3 1952Perl_my_bcopy(pTHX_ register const char *from,register char *to,register I32 len)
378cc40b
LW		 1953{
1954 char *retval = to;
1955
7c0587c8
LW		 1956 if (from - to >= 0) {
1957 while (len--)
1958 *to++ = *from++;
1959 }
1960 else {
1961 to += len;
1962 from += len;
1963 while (len--)
faf8582f 1964 *(--to) = *(--from);
7c0587c8 1965 }
378cc40b
LW		 1966 return retval;
1967}
ffed7fef 1968#endif
378cc40b 1969
fc36a67e 1970#ifndef HAS_MEMSET
1971void *
864dbfa3 1972Perl_my_memset(pTHX_ register char *loc, register I32 ch, register I32 len)
fc36a67e 1973{
1974 char *retval = loc;
1975
1976 while (len--)
1977 *loc++ = ch;
1978 return retval;
1979}
1980#endif
1981
7c0587c8 1982#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 1983char *
864dbfa3 1984Perl_my_bzero(pTHX_ register char *loc, register I32 len)
378cc40b
LW		 1985{
1986 char *retval = loc;
1987
1988 while (len--)
1989 *loc++ = 0;
1990 return retval;
1991}
1992#endif
7c0587c8 1993
36477c24 1994#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 1995I32
864dbfa3 1996Perl_my_memcmp(pTHX_ const char *s1, const char *s2, register I32 len)
7c0587c8 1997{
36477c24 1998 register U8 *a = (U8 *)s1;
1999 register U8 *b = (U8 *)s2;
79072805 2000 register I32 tmp;
7c0587c8
LW		 2001
2002 while (len--) {
36477c24 2003 if (tmp = *a++ - *b++)
7c0587c8
LW		 2004 return tmp;
2005 }
2006 return 0;
2007}
36477c24 2008#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2009
fe14fcc3 2010#ifndef HAS_VPRINTF
a687059c 2011
85e6fe83 2012#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2013char *
2014#else
2015int
2016#endif
08105a92 2017vsprintf(char *dest, const char *pat, char *args)
a687059c
LW		 2018{
2019 FILE fakebuf;
2020
2021 fakebuf._ptr = dest;
2022 fakebuf._cnt = 32767;
35c8bce7
LW		 2023#ifndef _IOSTRG
2024#define _IOSTRG 0
2025#endif
a687059c
LW		 2026 fakebuf._flag = _IOWRT|_IOSTRG;
2027 _doprnt(pat, args, &fakebuf); /* what a kludge */
2028 (void)putc('\0', &fakebuf);
85e6fe83 2029#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2030 return(dest);
2031#else
2032 return 0; /* perl doesn't use return value */
2033#endif
2034}
2035
fe14fcc3 2036#endif /* HAS_VPRINTF */
a687059c
LW		 2037
2038#ifdef MYSWAP
ffed7fef 2039#if BYTEORDER != 0x4321
a687059c 2040short
864dbfa3 2041Perl_my_swap(pTHX_ short s)
a687059c
LW		 2042{
2043#if (BYTEORDER & 1) == 0
2044 short result;
2045
2046 result = ((s & 255) << 8) + ((s >> 8) & 255);
2047 return result;
2048#else
2049 return s;
2050#endif
2051}
2052
2053long
864dbfa3 2054Perl_my_htonl(pTHX_ long l)
a687059c
LW		 2055{
2056 union {
2057 long result;
ffed7fef 2058 char c[sizeof(long)];
a687059c
LW		 2059 } u;
2060
ffed7fef 2061#if BYTEORDER == 0x1234
a687059c
LW		 2062 u.c[0] = (l >> 24) & 255;
2063 u.c[1] = (l >> 16) & 255;
2064 u.c[2] = (l >> 8) & 255;
2065 u.c[3] = l & 255;
2066 return u.result;
2067#else
ffed7fef 2068#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2069 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2070#else
79072805
LW		 2071 register I32 o;
2072 register I32 s;
a687059c 2073
ffed7fef
LW		 2074 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2075 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW		 2076 }
2077 return u.result;
2078#endif
2079#endif
2080}
2081
2082long
864dbfa3 2083Perl_my_ntohl(pTHX_ long l)
a687059c
LW		 2084{
2085 union {
2086 long l;
ffed7fef 2087 char c[sizeof(long)];
a687059c
LW		 2088 } u;
2089
ffed7fef 2090#if BYTEORDER == 0x1234
a687059c
LW		 2091 u.c[0] = (l >> 24) & 255;
2092 u.c[1] = (l >> 16) & 255;
2093 u.c[2] = (l >> 8) & 255;
2094 u.c[3] = l & 255;
2095 return u.l;
2096#else
ffed7fef 2097#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2098 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2099#else
79072805
LW		 2100 register I32 o;
2101 register I32 s;
a687059c
LW		 2102
2103 u.l = l;
2104 l = 0;
ffed7fef
LW		 2105 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2106 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW		 2107 }
2108 return l;
2109#endif
2110#endif
2111}
2112
ffed7fef 2113#endif /* BYTEORDER != 0x4321 */
988174c1
LW		 2114#endif /* MYSWAP */
2115
2116/*
2117 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2118 * If these functions are defined,
2119 * the BYTEORDER is neither 0x1234 nor 0x4321.
2120 * However, this is not assumed.
2121 * -DWS
2122 */
2123
2124#define HTOV(name,type) \
2125 type \
ba106d47 2126 name (register type n) \
988174c1
LW		 2127 { \
2128 union { \
2129 type value; \
2130 char c[sizeof(type)]; \
2131 } u; \
79072805
LW		 2132 register I32 i; \
2133 register I32 s; \
988174c1
LW		 2134 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2135 u.c[i] = (n >> s) & 0xFF; \
2136 } \
2137 return u.value; \
2138 }
2139
2140#define VTOH(name,type) \
2141 type \
ba106d47 2142 name (register type n) \
988174c1
LW		 2143 { \
2144 union { \
2145 type value; \
2146 char c[sizeof(type)]; \
2147 } u; \
79072805
LW		 2148 register I32 i; \
2149 register I32 s; \
988174c1
LW		 2150 u.value = n; \
2151 n = 0; \
2152 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2153 n += (u.c[i] & 0xFF) << s; \
2154 } \
2155 return n; \
2156 }
2157
2158#if defined(HAS_HTOVS) && !defined(htovs)
2159HTOV(htovs,short)
2160#endif
2161#if defined(HAS_HTOVL) && !defined(htovl)
2162HTOV(htovl,long)
2163#endif
2164#if defined(HAS_VTOHS) && !defined(vtohs)
2165VTOH(vtohs,short)
2166#endif
2167#if defined(HAS_VTOHL) && !defined(vtohl)
2168VTOH(vtohl,long)
2169#endif
a687059c 2170
5f05dabc 2171 /* VMS' my_popen() is in VMS.c, same with OS/2. */
4d2c4e07 2172#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC)
760ac839 2173PerlIO *
864dbfa3 2174Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW		 2175{
2176 int p[2];
8ac85365 2177 register I32 This, that;
79072805
LW		 2178 register I32 pid;
2179 SV *sv;
1738f5c4 2180 I32 doexec = strNE(cmd,"-");
e446cec8
IZ		 2181 I32 did_pipes = 0;
2182 int pp[2];
a687059c 2183
45bc9206 2184 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ		 2185#ifdef OS2
2186 if (doexec) {
2187 return my_syspopen(cmd,mode);
2188 }
2189#endif
8ac85365
NIS		 2190 This = (*mode == 'w');
2191 that = !This;
3280af22 2192 if (doexec && PL_tainting) {
bbce6d69 2193 taint_env();
2194 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2195 }
c2267164
IZ		 2196 if (PerlProc_pipe(p) < 0)
2197 return Nullfp;
e446cec8
IZ		 2198 if (doexec && PerlProc_pipe(pp) >= 0)
2199 did_pipes = 1;
a687059c
LW		 2200 while ((pid = (doexec?vfork():fork())) < 0) {
2201 if (errno != EAGAIN) {
6ad3d225 2202 PerlLIO_close(p[This]);
e446cec8
IZ		 2203 if (did_pipes) {
2204 PerlLIO_close(pp[0]);
2205 PerlLIO_close(pp[1]);
2206 }
a687059c 2207 if (!doexec)
cea2e8a9 2208 Perl_croak(aTHX_ "Can't fork");
a687059c
LW		 2209 return Nullfp;
2210 }
2211 sleep(5);
2212 }
2213 if (pid == 0) {
79072805
LW		 2214 GV* tmpgv;
2215
30ac6d9b
GS		 2216#undef THIS
2217#undef THAT
a687059c 2218#define THIS that
8ac85365 2219#define THAT This
6ad3d225 2220 PerlLIO_close(p[THAT]);
e446cec8
IZ		 2221 if (did_pipes) {
2222 PerlLIO_close(pp[0]);
2223#if defined(HAS_FCNTL) && defined(F_SETFD)
2224 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2225#endif
2226 }
a687059c 2227 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS		 2228 PerlLIO_dup2(p[THIS], *mode == 'r');
2229 PerlLIO_close(p[THIS]);
a687059c 2230 }
4435c477 2231#ifndef OS2
a687059c 2232 if (doexec) {
a0d0e21e 2233#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW		 2234 int fd;
2235
2236#ifndef NOFILE
2237#define NOFILE 20
2238#endif
6b88bc9c 2239 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ		 2240 if (fd != pp[1])
2241 PerlLIO_close(fd);
ae986130 2242#endif
e446cec8 2243 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2244 PerlProc__exit(1);
a687059c 2245 }
4435c477 2246#endif /* defined OS2 */
de3bb511 2247 /*SUPPRESS 560*/
85e6fe83 2248 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
1e422769 2249 sv_setiv(GvSV(tmpgv), (IV)getpid());
3280af22
NIS		 2250 PL_forkprocess = 0;
2251 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW		 2252 return Nullfp;
2253#undef THIS
2254#undef THAT
2255 }
62b28dd9 2256 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2257 PerlLIO_close(p[that]);
e446cec8
IZ		 2258 if (did_pipes)
2259 PerlLIO_close(pp[1]);
8ac85365 2260 if (p[that] < p[This]) {
6ad3d225
GS		 2261 PerlLIO_dup2(p[This], p[that]);
2262 PerlLIO_close(p[This]);
8ac85365 2263 p[This] = p[that];
62b28dd9 2264 }
3280af22 2265 sv = *av_fetch(PL_fdpid,p[This],TRUE);
a0d0e21e 2266 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2267 SvIVX(sv) = pid;
3280af22 2268 PL_forkprocess = pid;
e446cec8
IZ		 2269 if (did_pipes && pid > 0) {
2270 int errkid;
2271 int n = 0, n1;
2272
2273 while (n < sizeof(int)) {
2274 n1 = PerlLIO_read(pp[0],
2275 (void*)(((char*)&errkid)+n),
2276 (sizeof(int)) - n);
2277 if (n1 <= 0)
2278 break;
2279 n += n1;
2280 }
2281 if (n) { /* Error */
2282 if (n != sizeof(int))
cea2e8a9 2283 Perl_croak(aTHX_ "panic: kid popen errno read");
e446cec8
IZ		 2284 PerlLIO_close(pp[0]);
2285 errno = errkid; /* Propagate errno from kid */
2286 return Nullfp;
2287 }
2288 }
2289 if (did_pipes)
2290 PerlLIO_close(pp[0]);
8ac85365 2291 return PerlIO_fdopen(p[This], mode);
a687059c 2292}
7c0587c8 2293#else
55497cff 2294#if defined(atarist) || defined(DJGPP)
7c0587c8 2295FILE *popen();
760ac839 2296PerlIO *
864dbfa3 2297Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2298{
760ac839 2299 /* Needs work for PerlIO ! */
55497cff 2300 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 2301 PERL_FLUSHALL_FOR_CHILD;
55497cff 2302 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW		 2303}
2304#endif
2305
2306#endif /* !DOSISH */
a687059c 2307
748a9306 2308#ifdef DUMP_FDS
35ff7856 2309void
864dbfa3 2310Perl_dump_fds(pTHX_ char *s)
ae986130
LW		 2311{
2312 int fd;
2313 struct stat tmpstatbuf;
2314
760ac839 2315 PerlIO_printf(PerlIO_stderr(),"%s", s);
ae986130 2316 for (fd = 0; fd < 32; fd++) {
6ad3d225 2317 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
760ac839 2318 PerlIO_printf(PerlIO_stderr()," %d",fd);
ae986130 2319 }
760ac839 2320 PerlIO_printf(PerlIO_stderr(),"\n");
ae986130 2321}
35ff7856 2322#endif /* DUMP_FDS */
ae986130 2323
fe14fcc3 2324#ifndef HAS_DUP2
fec02dd3 2325int
ba106d47 2326dup2(int oldfd, int newfd)
a687059c 2327{
a0d0e21e 2328#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD		 2329 if (oldfd == newfd)
2330 return oldfd;
6ad3d225 2331 PerlLIO_close(newfd);
fec02dd3 2332 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2333#else
fc36a67e 2334#define DUP2_MAX_FDS 256
2335 int fdtmp[DUP2_MAX_FDS];
79072805 2336 I32 fdx = 0;
ae986130
LW		 2337 int fd;
2338
fe14fcc3 2339 if (oldfd == newfd)
fec02dd3 2340 return oldfd;
6ad3d225 2341 PerlLIO_close(newfd);
fc36a67e 2342 /* good enough for low fd's... */
6ad3d225 2343 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2344 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2345 PerlLIO_close(fd);
fc36a67e 2346 fd = -1;
2347 break;
2348 }
ae986130 2349 fdtmp[fdx++] = fd;
fc36a67e 2350 }
ae986130 2351 while (fdx > 0)
6ad3d225 2352 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2353 return fd;
62b28dd9 2354#endif
a687059c
LW		 2355}
2356#endif
2357
ff68c719 2358
2359#ifdef HAS_SIGACTION
2360
2361Sighandler_t
864dbfa3 2362Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2363{
2364 struct sigaction act, oact;
2365
2366 act.sa_handler = handler;
2367 sigemptyset(&act.sa_mask);
2368 act.sa_flags = 0;
2369#ifdef SA_RESTART
2370 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2371#endif
85264bed
CS		 2372#ifdef SA_NOCLDWAIT
2373 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2374 act.sa_flags |= SA_NOCLDWAIT;
2375#endif
ff68c719 2376 if (sigaction(signo, &act, &oact) == -1)
36477c24 2377 return SIG_ERR;
ff68c719 2378 else
36477c24 2379 return oact.sa_handler;
ff68c719 2380}
2381
2382Sighandler_t
864dbfa3 2383Perl_rsignal_state(pTHX_ int signo)
ff68c719 2384{
2385 struct sigaction oact;
2386
2387 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2388 return SIG_ERR;
2389 else
2390 return oact.sa_handler;
2391}
2392
2393int
864dbfa3 2394Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2395{
2396 struct sigaction act;
2397
2398 act.sa_handler = handler;
2399 sigemptyset(&act.sa_mask);
2400 act.sa_flags = 0;
2401#ifdef SA_RESTART
2402 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2403#endif
85264bed
CS		 2404#ifdef SA_NOCLDWAIT
2405 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2406 act.sa_flags |= SA_NOCLDWAIT;
2407#endif
ff68c719 2408 return sigaction(signo, &act, save);
2409}
2410
2411int
864dbfa3 2412Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2413{
2414 return sigaction(signo, save, (struct sigaction *)NULL);
2415}
2416
2417#else /* !HAS_SIGACTION */
2418
2419Sighandler_t
864dbfa3 2420Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2421{
6ad3d225 2422 return PerlProc_signal(signo, handler);
ff68c719 2423}
2424
2425static int sig_trapped;
2426
2427static
2428Signal_t
4e35701f 2429sig_trap(int signo)
ff68c719 2430{
2431 sig_trapped++;
2432}
2433
2434Sighandler_t
864dbfa3 2435Perl_rsignal_state(pTHX_ int signo)
ff68c719 2436{
2437 Sighandler_t oldsig;
2438
2439 sig_trapped = 0;
6ad3d225
GS		 2440 oldsig = PerlProc_signal(signo, sig_trap);
2441 PerlProc_signal(signo, oldsig);
ff68c719 2442 if (sig_trapped)
6ad3d225 2443 PerlProc_kill(getpid(), signo);
ff68c719 2444 return oldsig;
2445}
2446
2447int
864dbfa3 2448Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2449{
6ad3d225 2450 *save = PerlProc_signal(signo, handler);
ff68c719 2451 return (*save == SIG_ERR) ? -1 : 0;
2452}
2453
2454int
864dbfa3 2455Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2456{
6ad3d225 2457 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719 2458}
2459
2460#endif /* !HAS_SIGACTION */
2461
5f05dabc 2462 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
4d2c4e07 2463#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC)
79072805 2464I32
864dbfa3 2465Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2466{
ff68c719 2467 Sigsave_t hstat, istat, qstat;
a687059c 2468 int status;
a0d0e21e 2469 SV **svp;
20188a90 2470 int pid;
1d3434b8 2471 int pid2;
03136e13
CS		 2472 bool close_failed;
2473 int saved_errno;
2474#ifdef VMS
2475 int saved_vaxc_errno;
2476#endif
22fae026
TM		 2477#ifdef WIN32
2478 int saved_win32_errno;
2479#endif
a687059c 2480
3280af22 2481 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
748a9306 2482 pid = (int)SvIVX(*svp);
a0d0e21e 2483 SvREFCNT_dec(*svp);
3280af22 2484 *svp = &PL_sv_undef;
ddcf38b7
IZ		 2485#ifdef OS2
2486 if (pid == -1) { /* Opened by popen. */
2487 return my_syspclose(ptr);
2488 }
2489#endif
03136e13
CS		 2490 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2491 saved_errno = errno;
2492#ifdef VMS
2493 saved_vaxc_errno = vaxc$errno;
2494#endif
22fae026
TM		 2495#ifdef WIN32
2496 saved_win32_errno = GetLastError();
2497#endif
03136e13 2498 }
7c0587c8 2499#ifdef UTS
6ad3d225 2500 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2501#endif
ff68c719 2502 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2503 rsignal_save(SIGINT, SIG_IGN, &istat);
2504 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306 2505 do {
1d3434b8
GS		 2506 pid2 = wait4pid(pid, &status, 0);
2507 } while (pid2 == -1 && errno == EINTR);
ff68c719 2508 rsignal_restore(SIGHUP, &hstat);
2509 rsignal_restore(SIGINT, &istat);
2510 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS		 2511 if (close_failed) {
2512 SETERRNO(saved_errno, saved_vaxc_errno);
2513 return -1;
2514 }
1d3434b8 2515 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2516}
4633a7c4
LW		 2517#endif /* !DOSISH */
2518
8736538c 2519#if !defined(DOSISH) || defined(OS2) || defined(WIN32) || defined(CYGWIN32)
79072805 2520I32
864dbfa3 2521Perl_wait4pid(pTHX_ int pid, int *statusp, int flags)
20188a90 2522{
79072805
LW		 2523 SV *sv;
2524 SV** svp;
fc36a67e 2525 char spid[TYPE_CHARS(int)];
20188a90
LW		 2526
2527 if (!pid)
2528 return -1;
20188a90
LW		 2529 if (pid > 0) {
2530 sprintf(spid, "%d", pid);
3280af22
NIS		 2531 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2532 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2533 *statusp = SvIVX(*svp);
3280af22 2534 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2535 return pid;
2536 }
2537 }
2538 else {
79072805 2539 HE *entry;
20188a90 2540
3280af22
NIS		 2541 hv_iterinit(PL_pidstatus);
2542 if (entry = hv_iternext(PL_pidstatus)) {
a0d0e21e 2543 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2544 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2545 *statusp = SvIVX(sv);
20188a90 2546 sprintf(spid, "%d", pid);
3280af22 2547 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2548 return pid;
2549 }
2550 }
79072805 2551#ifdef HAS_WAITPID
367f3c24
IZ		 2552# ifdef HAS_WAITPID_RUNTIME
2553 if (!HAS_WAITPID_RUNTIME)
2554 goto hard_way;
2555# endif
f55ee38a 2556 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ		 2557#endif
2558#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2559 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ		 2560#endif
2561#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2562 hard_way:
a0d0e21e
LW		 2563 {
2564 I32 result;
2565 if (flags)
cea2e8a9 2566 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2567 else {
76e3520e 2568 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW		 2569 pidgone(result,*statusp);
2570 if (result < 0)
2571 *statusp = -1;
2572 }
2573 return result;
a687059c
LW		 2574 }
2575#endif
a687059c 2576}
2d7a9237 2577#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2578
7c0587c8 2579void
de3bb511 2580/*SUPPRESS 590*/
864dbfa3 2581Perl_pidgone(pTHX_ int pid, int status)
a687059c 2582{
79072805 2583 register SV *sv;
fc36a67e 2584 char spid[TYPE_CHARS(int)];
a687059c 2585
20188a90 2586 sprintf(spid, "%d", pid);
3280af22 2587 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2588 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2589 SvIVX(sv) = status;
20188a90 2590 return;
a687059c
LW		 2591}
2592
55497cff 2593#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2594int pclose();
ddcf38b7
IZ		 2595#ifdef HAS_FORK
2596int /* Cannot prototype with I32
2597 in os2ish.h. */
ba106d47 2598my_syspclose(PerlIO *ptr)
ddcf38b7 2599#else
79072805 2600I32
864dbfa3 2601Perl_my_pclose(pTHX_ PerlIO *ptr)
ddcf38b7 2602#endif
a687059c 2603{
760ac839
LW		 2604 /* Needs work for PerlIO ! */
2605 FILE *f = PerlIO_findFILE(ptr);
2606 I32 result = pclose(f);
2607 PerlIO_releaseFILE(ptr,f);
2608 return result;
a687059c 2609}
7c0587c8 2610#endif
9f68db38
LW		 2611
2612void
864dbfa3 2613Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2614{
79072805 2615 register I32 todo;
08105a92 2616 register const char *frombase = from;
9f68db38
LW		 2617
2618 if (len == 1) {
08105a92 2619 register const char c = *from;
9f68db38 2620 while (count-- > 0)
5926133d 2621 *to++ = c;
9f68db38
LW		 2622 return;
2623 }
2624 while (count-- > 0) {
2625 for (todo = len; todo > 0; todo--) {
2626 *to++ = *from++;
2627 }
2628 from = frombase;
2629 }
2630}
0f85fab0 2631
463ee0b2 2632U32
65202027 2633Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW		 2634{
2635 long along;
2636
27e2fb84 2637#if CASTFLAGS & 2
34de22dd
LW		 2638# define BIGDOUBLE 2147483648.0
2639 if (f >= BIGDOUBLE)
2640 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2641#endif
0f85fab0
LW		 2642 if (f >= 0.0)
2643 return (unsigned long)f;
2644 along = (long)f;
2645 return (unsigned long)along;
2646}
ed6116ce 2647# undef BIGDOUBLE
5d94fbed 2648
5d94fbed
AD		 2649/* Unfortunately, on some systems the cast_uv() function doesn't
2650 work with the system-supplied definition of ULONG_MAX. The
2651 comparison (f >= ULONG_MAX) always comes out true. It must be a
2652 problem with the compiler constant folding.
2653
2654 In any case, this workaround should be fine on any two's complement
2655 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2656 ccflags.
2657 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2658*/
1eb770ff 2659
2660/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2661 of LONG_(MIN/MAX).
2662 -- Kenneth Albanowski <kjahds@kjahds.com>
2663*/
2664
20cec16a 2665#ifndef MY_UV_MAX
2666# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD		 2667#endif
2668
ed6116ce 2669I32
65202027 2670Perl_cast_i32(pTHX_ NV f)
ed6116ce 2671{
20cec16a 2672 if (f >= I32_MAX)
2673 return (I32) I32_MAX;
2674 if (f <= I32_MIN)
2675 return (I32) I32_MIN;
ed6116ce
LW		 2676 return (I32) f;
2677}
a0d0e21e
LW		 2678
2679IV
65202027 2680Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2681{
25da4f38
IZ		 2682 if (f >= IV_MAX) {
2683 UV uv;
2684
65202027 2685 if (f >= (NV)UV_MAX)
25da4f38
IZ		 2686 return (IV) UV_MAX;
2687 uv = (UV) f;
2688 return (IV)uv;
2689 }
20cec16a 2690 if (f <= IV_MIN)
2691 return (IV) IV_MIN;
a0d0e21e
LW		 2692 return (IV) f;
2693}
5d94fbed
AD		 2694
2695UV
65202027 2696Perl_cast_uv(pTHX_ NV f)
5d94fbed 2697{
20cec16a 2698 if (f >= MY_UV_MAX)
2699 return (UV) MY_UV_MAX;
25da4f38
IZ		 2700 if (f < 0) {
2701 IV iv;
2702
2703 if (f < IV_MIN)
2704 return (UV)IV_MIN;
2705 iv = (IV) f;
2706 return (UV) iv;
2707 }
5d94fbed
AD		 2708 return (UV) f;
2709}
2710
fe14fcc3 2711#ifndef HAS_RENAME
79072805 2712I32
864dbfa3 2713Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2714{
93a17b20
LW		 2715 char *fa = strrchr(a,'/');
2716 char *fb = strrchr(b,'/');
62b28dd9
LW		 2717 struct stat tmpstatbuf1;
2718 struct stat tmpstatbuf2;
46fc3d4c 2719 SV *tmpsv = sv_newmortal();
62b28dd9
LW		 2720
2721 if (fa)
2722 fa++;
2723 else
2724 fa = a;
2725 if (fb)
2726 fb++;
2727 else
2728 fb = b;
2729 if (strNE(a,b))
2730 return FALSE;
2731 if (fa == a)
46fc3d4c 2732 sv_setpv(tmpsv, ".");
62b28dd9 2733 else
46fc3d4c 2734 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2735 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW		 2736 return FALSE;
2737 if (fb == b)
46fc3d4c 2738 sv_setpv(tmpsv, ".");
62b28dd9 2739 else
46fc3d4c 2740 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2741 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW		 2742 return FALSE;
2743 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2744 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2745}
fe14fcc3
LW		 2746#endif /* !HAS_RENAME */
2747
55497cff 2748UV
864dbfa3 2749Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
4f19785b
WSI		 2750{
2751 register char *s = start;
2752 register UV retval = 0;
2753 bool overflowed = FALSE;
2754 while (len && *s >= '0' && *s <= '1') {
f248d071
GS		 2755 register UV n = retval << 1;
2756 if (!overflowed && (n >> 1) != retval) {
2757 dTHR;
2758 if (ckWARN_d(WARN_UNSAFE))
2759 Perl_warner(aTHX_ WARN_UNSAFE, "Integer overflow in binary number");
2760 overflowed = TRUE;
2761 }
2762 retval = n | (*s++ - '0');
2763 len--;
4f19785b 2764 }
6529e8bd 2765 if (len && (*s >= '2' && *s <= '9')) {
4f19785b
WSI		 2766 dTHR;
2767 if (ckWARN(WARN_UNSAFE))
cea2e8a9 2768 Perl_warner(aTHX_ WARN_UNSAFE, "Illegal binary digit '%c' ignored", *s);
4f19785b
WSI		 2769 }
2770 *retlen = s - start;
2771 return retval;
2772}
2773UV
864dbfa3 2774Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 2775{
2776 register char *s = start;
55497cff 2777 register UV retval = 0;
2778 bool overflowed = FALSE;
fe14fcc3 2779
748a9306 2780 while (len && *s >= '0' && *s <= '7') {
55497cff 2781 register UV n = retval << 3;
f248d071
GS		 2782 if (!overflowed && (n >> 3) != retval) {
2783 dTHR;
2784 if (ckWARN_d(WARN_UNSAFE))
2785 Perl_warner(aTHX_ WARN_UNSAFE, "Integer overflow in octal number");
55497cff 2786 overflowed = TRUE;
2787 }
2788 retval = n | (*s++ - '0');
748a9306 2789 len--;
fe14fcc3 2790 }
d008e5eb
GS		 2791 if (len && (*s == '8' || *s == '9')) {
2792 dTHR;
2793 if (ckWARN(WARN_OCTAL))
cea2e8a9 2794 Perl_warner(aTHX_ WARN_OCTAL, "Illegal octal digit '%c' ignored", *s);
d008e5eb 2795 }
fe14fcc3
LW		 2796 *retlen = s - start;
2797 return retval;
2798}
2799
71be2cbc 2800UV
864dbfa3 2801Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 2802{
2803 register char *s = start;
55497cff 2804 register UV retval = 0;
2805 bool overflowed = FALSE;
6ff81951 2806 char *tmp = s;
a0ed51b3 2807 register UV n;
fe14fcc3 2808
a0ed51b3
LW		 2809 while (len-- && *s) {
2810 tmp = strchr((char *) PL_hexdigit, *s++);
2811 if (!tmp) {
e3fdf988 2812 if (*(s-1) == '_' || (*(s-1) == 'x' && retval == 0))
a0ed51b3
LW		 2813 continue;
2814 else {
d008e5eb 2815 dTHR;
a0ed51b3 2816 --s;
599cee73 2817 if (ckWARN(WARN_UNSAFE))
cea2e8a9 2818 Perl_warner(aTHX_ WARN_UNSAFE,"Illegal hex digit '%c' ignored", *s);
a0ed51b3
LW		 2819 break;
2820 }
2821 }
2822 n = retval << 4;
f248d071 2823 if (!overflowed && (n >> 4) != retval) {
0453d815 2824 dTHR;
f248d071
GS		 2825 if (ckWARN_d(WARN_UNSAFE))
2826 Perl_warner(aTHX_ WARN_UNSAFE, "Integer overflow in hex number");
2827 overflowed = TRUE;
55497cff 2828 }
3280af22 2829 retval = n | ((tmp - PL_hexdigit) & 15);
6ff81951 2830 }
fe14fcc3
LW		 2831 *retlen = s - start;
2832 return retval;
2833}
760ac839 2834
491527d0 2835char*
864dbfa3 2836Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0
GS		 2837{
2838 dTHR;
2839 char *xfound = Nullch;
2840 char *xfailed = Nullch;
0f31cffe 2841 char tmpbuf[MAXPATHLEN];
491527d0
GS		 2842 register char *s;
2843 I32 len;
2844 int retval;
2845#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
2846# define SEARCH_EXTS ".bat", ".cmd", NULL
2847# define MAX_EXT_LEN 4
2848#endif
2849#ifdef OS2
2850# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
2851# define MAX_EXT_LEN 4
2852#endif
2853#ifdef VMS
2854# define SEARCH_EXTS ".pl", ".com", NULL
2855# define MAX_EXT_LEN 4
2856#endif
2857 /* additional extensions to try in each dir if scriptname not found */
2858#ifdef SEARCH_EXTS
2859 char *exts[] = { SEARCH_EXTS };
2860 char **ext = search_ext ? search_ext : exts;
2861 int extidx = 0, i = 0;
2862 char *curext = Nullch;
2863#else
2864# define MAX_EXT_LEN 0
2865#endif
2866
2867 /*
2868 * If dosearch is true and if scriptname does not contain path
2869 * delimiters, search the PATH for scriptname.
2870 *
2871 * If SEARCH_EXTS is also defined, will look for each
2872 * scriptname{SEARCH_EXTS} whenever scriptname is not found
2873 * while searching the PATH.
2874 *
2875 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
2876 * proceeds as follows:
2877 * If DOSISH or VMSISH:
2878 * + look for ./scriptname{,.foo,.bar}
2879 * + search the PATH for scriptname{,.foo,.bar}
2880 *
2881 * If !DOSISH:
2882 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
2883 * this will not look in '.' if it's not in the PATH)
2884 */
84486fc6 2885 tmpbuf[0] = '\0';
491527d0
GS		 2886
2887#ifdef VMS
2888# ifdef ALWAYS_DEFTYPES
2889 len = strlen(scriptname);
2890 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
2891 int hasdir, idx = 0, deftypes = 1;
2892 bool seen_dot = 1;
2893
2894 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
2895# else
2896 if (dosearch) {
2897 int hasdir, idx = 0, deftypes = 1;
2898 bool seen_dot = 1;
2899
2900 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
2901# endif
2902 /* The first time through, just add SEARCH_EXTS to whatever we
2903 * already have, so we can check for default file types. */
2904 while (deftypes ||
84486fc6 2905 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS		 2906 {
2907 if (deftypes) {
2908 deftypes = 0;
84486fc6 2909 *tmpbuf = '\0';
491527d0 2910 }
84486fc6
GS		 2911 if ((strlen(tmpbuf) + strlen(scriptname)
2912 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 2913 continue; /* don't search dir with too-long name */
84486fc6 2914 strcat(tmpbuf, scriptname);
491527d0
GS		 2915#else /* !VMS */
2916
2917#ifdef DOSISH
2918 if (strEQ(scriptname, "-"))
2919 dosearch = 0;
2920 if (dosearch) { /* Look in '.' first. */
2921 char *cur = scriptname;
2922#ifdef SEARCH_EXTS
2923 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
2924 while (ext[i])
2925 if (strEQ(ext[i++],curext)) {
2926 extidx = -1; /* already has an ext */
2927 break;
2928 }
2929 do {
2930#endif
2931 DEBUG_p(PerlIO_printf(Perl_debug_log,
2932 "Looking for %s\n",cur));
017f25f1
IZ		 2933 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
2934 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS		 2935 dosearch = 0;
2936 scriptname = cur;
2937#ifdef SEARCH_EXTS
2938 break;
2939#endif
2940 }
2941#ifdef SEARCH_EXTS
2942 if (cur == scriptname) {
2943 len = strlen(scriptname);
84486fc6 2944 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 2945 break;
84486fc6 2946 cur = strcpy(tmpbuf, scriptname);
491527d0
GS		 2947 }
2948 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 2949 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS		 2950#endif
2951 }
2952#endif
2953
2954 if (dosearch && !strchr(scriptname, '/')
2955#ifdef DOSISH
2956 && !strchr(scriptname, '\\')
2957#endif
2958 && (s = PerlEnv_getenv("PATH"))) {
2959 bool seen_dot = 0;
2960
3280af22
NIS		 2961 PL_bufend = s + strlen(s);
2962 while (s < PL_bufend) {
491527d0
GS		 2963#if defined(atarist) || defined(DOSISH)
2964 for (len = 0; *s
2965# ifdef atarist
2966 && *s != ','
2967# endif
2968 && *s != ';'; len++, s++) {
84486fc6
GS		 2969 if (len < sizeof tmpbuf)
2970 tmpbuf[len] = *s;
491527d0 2971 }
84486fc6
GS		 2972 if (len < sizeof tmpbuf)
2973 tmpbuf[len] = '\0';
491527d0 2974#else /* ! (atarist || DOSISH) */
3280af22 2975 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS		 2976 ':',
2977 &len);
2978#endif /* ! (atarist || DOSISH) */
3280af22 2979 if (s < PL_bufend)
491527d0 2980 s++;
84486fc6 2981 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0
GS		 2982 continue; /* don't search dir with too-long name */
2983 if (len
61ae2fbf 2984#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS		 2985 && tmpbuf[len - 1] != '/'
2986 && tmpbuf[len - 1] != '\\'
491527d0
GS		 2987#endif
2988 )
84486fc6
GS		 2989 tmpbuf[len++] = '/';
2990 if (len == 2 && tmpbuf[0] == '.')
491527d0 2991 seen_dot = 1;
84486fc6 2992 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS		 2993#endif /* !VMS */
2994
2995#ifdef SEARCH_EXTS
84486fc6 2996 len = strlen(tmpbuf);
491527d0
GS		 2997 if (extidx > 0) /* reset after previous loop */
2998 extidx = 0;
2999 do {
3000#endif
84486fc6 3001 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3002 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ		 3003 if (S_ISDIR(PL_statbuf.st_mode)) {
3004 retval = -1;
3005 }
491527d0
GS		 3006#ifdef SEARCH_EXTS
3007 } while ( retval < 0 /* not there */
3008 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3009 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS		 3010 );
3011#endif
3012 if (retval < 0)
3013 continue;
3280af22
NIS		 3014 if (S_ISREG(PL_statbuf.st_mode)
3015 && cando(S_IRUSR,TRUE,&PL_statbuf)
491527d0 3016#ifndef DOSISH
3280af22 3017 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS		 3018#endif
3019 )
3020 {
84486fc6 3021 xfound = tmpbuf; /* bingo! */
491527d0
GS		 3022 break;
3023 }
3024 if (!xfailed)
84486fc6 3025 xfailed = savepv(tmpbuf);
491527d0
GS		 3026 }
3027#ifndef DOSISH
017f25f1
IZ		 3028 if (!xfound && !seen_dot && !xfailed &&
3029 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3030 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS		 3031#endif
3032 seen_dot = 1; /* Disable message. */
9ccb31f9
GS		 3033 if (!xfound) {
3034 if (flags & 1) { /* do or die? */
cea2e8a9 3035 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS		 3036 (xfailed ? "execute" : "find"),
3037 (xfailed ? xfailed : scriptname),
3038 (xfailed ? "" : " on PATH"),
3039 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3040 }
3041 scriptname = Nullch;
3042 }
491527d0
GS		 3043 if (xfailed)
3044 Safefree(xfailed);
3045 scriptname = xfound;
3046 }
9ccb31f9 3047 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS		 3048}
3049
3050
11343788 3051#ifdef USE_THREADS
12ca11f6
MB		 3052#ifdef FAKE_THREADS
3053/* Very simplistic scheduler for now */
3054void
3055schedule(void)
3056{
c7848ba1 3057 thr = thr->i.next_run;
12ca11f6
MB		 3058}
3059
3060void
864dbfa3 3061Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB		 3062{
3063 *cp = 0;
3064}
3065
3066void
864dbfa3 3067Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3068{
51dd5992 3069 perl_os_thread t;
12ca11f6
MB		 3070 perl_cond cond = *cp;
3071
3072 if (!cond)
3073 return;
3074 t = cond->thread;
3075 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3076 t->i.next_run = thr->i.next_run;
3077 thr->i.next_run->i.prev_run = t;
3078 t->i.prev_run = thr;
3079 thr->i.next_run = t;
3080 thr->i.wait_queue = 0;
12ca11f6
MB		 3081 /* Remove from the wait queue */
3082 *cp = cond->next;
3083 Safefree(cond);
3084}
3085
3086void
864dbfa3 3087Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3088{
51dd5992 3089 perl_os_thread t;
12ca11f6
MB		 3090 perl_cond cond, cond_next;
3091
3092 for (cond = *cp; cond; cond = cond_next) {
3093 t = cond->thread;
3094 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3095 t->i.next_run = thr->i.next_run;
3096 thr->i.next_run->i.prev_run = t;
3097 t->i.prev_run = thr;
3098 thr->i.next_run = t;
3099 thr->i.wait_queue = 0;
12ca11f6
MB		 3100 /* Remove from the wait queue */
3101 cond_next = cond->next;
3102 Safefree(cond);
3103 }
3104 *cp = 0;
3105}
3106
3107void
864dbfa3 3108Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB		 3109{
3110 perl_cond cond;
3111
c7848ba1 3112 if (thr->i.next_run == thr)
cea2e8a9 3113 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
12ca11f6 3114
0f15f207 3115 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB		 3116 cond->thread = thr;
3117 cond->next = *cp;
3118 *cp = cond;
c7848ba1 3119 thr->i.wait_queue = cond;
12ca11f6 3120 /* Remove ourselves from runnable queue */
c7848ba1
MB		 3121 thr->i.next_run->i.prev_run = thr->i.prev_run;
3122 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB		 3123}
3124#endif /* FAKE_THREADS */
3125
0d85d877 3126#ifdef PTHREAD_GETSPECIFIC_INT
52e1cb5e 3127struct perl_thread *
864dbfa3 3128Perl_getTHR(pTHX)
11343788
MB		 3129{
3130 pthread_addr_t t;
3131
6b88bc9c 3132 if (pthread_getspecific(PL_thr_key, &t))
cea2e8a9 3133 Perl_croak(aTHX_ "panic: pthread_getspecific");
52e1cb5e 3134 return (struct perl_thread *) t;
11343788 3135}
0d85d877 3136#endif
f93b4edd
MB		 3137
3138MAGIC *
864dbfa3 3139Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB		 3140{
3141 MAGIC *mg;
3142
3143 SvUPGRADE(sv, SVt_PVMG);
3144 mg = mg_find(sv, 'm');
3145 if (!mg) {
3146 condpair_t *cp;
3147
3148 New(53, cp, 1, condpair_t);
3149 MUTEX_INIT(&cp->mutex);
3150 COND_INIT(&cp->owner_cond);
3151 COND_INIT(&cp->cond);
3152 cp->owner = 0;
28a8573f 3153 MUTEX_LOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB		 3154 mg = mg_find(sv, 'm');
3155 if (mg) {
3156 /* someone else beat us to initialising it */
28a8573f 3157 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB		 3158 MUTEX_DESTROY(&cp->mutex);
3159 COND_DESTROY(&cp->owner_cond);
3160 COND_DESTROY(&cp->cond);
3161 Safefree(cp);
3162 }
3163 else {
3164 sv_magic(sv, Nullsv, 'm', 0, 0);
3165 mg = SvMAGIC(sv);
3166 mg->mg_ptr = (char *)cp;
565764a8 3167 mg->mg_len = sizeof(cp);
28a8573f 3168 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
8b73bbec 3169 DEBUG_S(WITH_THR(PerlIO_printf(PerlIO_stderr(),
c7848ba1 3170 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB		 3171 }
3172 }
3173 return mg;
3174}
a863c7d1
MB		 3175
3176/*
199100c8
MB		 3177 * Make a new perl thread structure using t as a prototype. Some of the
3178 * fields for the new thread are copied from the prototype thread, t,
3179 * so t should not be running in perl at the time this function is
3180 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3181 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3182 */
52e1cb5e 3183struct perl_thread *
864dbfa3 3184Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3185{
cea2e8a9 3186#ifndef PERL_IMPLICIT_CONTEXT
52e1cb5e 3187 struct perl_thread *thr;
cea2e8a9 3188#endif
a863c7d1 3189 SV *sv;
199100c8
MB		 3190 SV **svp;
3191 I32 i;
3192
79cb57f6 3193 sv = newSVpvn("", 0);
52e1cb5e
JH		 3194 SvGROW(sv, sizeof(struct perl_thread) + 1);
3195 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3196 thr = (Thread) SvPVX(sv);
949ced2d 3197#ifdef DEBUGGING
52e1cb5e 3198 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS		 3199 PL_markstack = 0;
3200 PL_scopestack = 0;
3201 PL_savestack = 0;
3202 PL_retstack = 0;
3203 PL_dirty = 0;
3204 PL_localizing = 0;
949ced2d
GS		 3205 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3206#else
3207 Zero(thr, 1, struct perl_thread);
3208#endif
199100c8 3209
cea2e8a9 3210 PL_protect = FUNC_NAME_TO_PTR(Perl_default_protect);
312caa8e 3211
199100c8 3212 thr->oursv = sv;
cea2e8a9 3213 init_stacks();
a863c7d1 3214
533c011a 3215 PL_curcop = &PL_compiling;
199100c8 3216 thr->cvcache = newHV();
54b9620d 3217 thr->threadsv = newAV();
a863c7d1 3218 thr->specific = newAV();
79cb57f6 3219 thr->errsv = newSVpvn("", 0);
38a03e6e 3220 thr->errhv = newHV();
a863c7d1
MB		 3221 thr->flags = THRf_R_JOINABLE;
3222 MUTEX_INIT(&thr->mutex);
199100c8 3223
d55594ae
GS		 3224 /* top_env needs to be non-zero. It points to an area
3225 in which longjmp() stuff is stored, as C callstack
3226 info there at least is thread specific this has to
3227 be per-thread. Otherwise a 'die' in a thread gives
3228 that thread the C stack of last thread to do an eval {}!
3229 See comments in scope.h
3230 Initialize top entry (as in perl.c for main thread)
3231 */
533c011a
NIS		 3232 PL_start_env.je_prev = NULL;
3233 PL_start_env.je_ret = -1;
3234 PL_start_env.je_mustcatch = TRUE;
3235 PL_top_env = &PL_start_env;
3236
faef0170 3237 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
533c011a
NIS		 3238 PL_restartop = 0;
3239
b099ddc0
GS		 3240 PL_statname = NEWSV(66,0);
3241 PL_maxscream = -1;
cea2e8a9
GS		 3242 PL_regcompp = FUNC_NAME_TO_PTR(Perl_pregcomp);
3243 PL_regexecp = FUNC_NAME_TO_PTR(Perl_regexec_flags);
f722798b
IZ		 3244 PL_regint_start = FUNC_NAME_TO_PTR(Perl_re_intuit_start);
3245 PL_regint_string = FUNC_NAME_TO_PTR(Perl_re_intuit_string);
3246 PL_regfree = FUNC_NAME_TO_PTR(Perl_pregfree);
b099ddc0
GS		 3247 PL_regindent = 0;
3248 PL_reginterp_cnt = 0;
3249 PL_lastscream = Nullsv;
3250 PL_screamfirst = 0;
3251 PL_screamnext = 0;
3252 PL_reg_start_tmp = 0;
3253 PL_reg_start_tmpl = 0;
3254
3255 /* parent thread's data needs to be locked while we make copy */
3256 MUTEX_LOCK(&t->mutex);
3257
312caa8e
CS		 3258 PL_protect = t->Tprotect;
3259
b099ddc0
GS		 3260 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3261 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3262 PL_curstash = t->Tcurstash; /* always be set to main? */
3263
6b88bc9c 3264 PL_tainted = t->Ttainted;
84fee439
NIS		 3265 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3266 PL_nrs = newSVsv(t->Tnrs);
3267 PL_rs = SvREFCNT_inc(PL_nrs);
3268 PL_last_in_gv = Nullgv;
3269 PL_ofslen = t->Tofslen;
3270 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3271 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3272 PL_chopset = t->Tchopset;
3273 PL_formtarget = newSVsv(t->Tformtarget);
3274 PL_bodytarget = newSVsv(t->Tbodytarget);
3275 PL_toptarget = newSVsv(t->Ttoptarget);
533c011a 3276
54b9620d
MB		 3277 /* Initialise all per-thread SVs that the template thread used */
3278 svp = AvARRAY(t->threadsv);
93965878 3279 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 3280 if (*svp && *svp != &PL_sv_undef) {
199100c8 3281 SV *sv = newSVsv(*svp);
54b9620d 3282 av_store(thr->threadsv, i, sv);
533c011a 3283 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
8b73bbec 3284 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
54b9620d 3285 "new_struct_thread: copied threadsv %d %p->%p\n",i, t, thr));
199100c8
MB		 3286 }
3287 }
940cb80d 3288 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 3289
533c011a
NIS		 3290 MUTEX_LOCK(&PL_threads_mutex);
3291 PL_nthreads++;
3292 thr->tid = ++PL_threadnum;
199100c8
MB		 3293 thr->next = t->next;
3294 thr->prev = t;
3295 t->next = thr;
3296 thr->next->prev = thr;
533c011a 3297 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 3298
b099ddc0
GS		 3299 /* done copying parent's state */
3300 MUTEX_UNLOCK(&t->mutex);
3301
a863c7d1 3302#ifdef HAVE_THREAD_INTERN
4f63d024 3303 Perl_init_thread_intern(thr);
a863c7d1 3304#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB		 3305 return thr;
3306}
11343788 3307#endif /* USE_THREADS */
760ac839
LW		 3308
3309#ifdef HUGE_VAL
3310/*
3311 * This hack is to force load of "huge" support from libm.a
3312 * So it is in perl for (say) POSIX to use.
3313 * Needed for SunOS with Sun's 'acc' for example.
3314 */
65202027 3315NV
8ac85365 3316Perl_huge(void)
760ac839
LW		 3317{
3318 return HUGE_VAL;
3319}
3320#endif
4e35701f 3321
22239a37
NIS		 3322#ifdef PERL_GLOBAL_STRUCT
3323struct perl_vars *
864dbfa3 3324Perl_GetVars(pTHX)
22239a37 3325{
533c011a 3326 return &PL_Vars;
22239a37 3327}
31fb1209
NIS		 3328#endif
3329
3330char **
864dbfa3 3331Perl_get_op_names(pTHX)
31fb1209 3332{
22c35a8c 3333 return PL_op_name;
31fb1209
NIS		 3334}
3335
3336char **
864dbfa3 3337Perl_get_op_descs(pTHX)
31fb1209 3338{
22c35a8c 3339 return PL_op_desc;
31fb1209 3340}
9e6b2b00
GS		 3341
3342char *
864dbfa3 3343Perl_get_no_modify(pTHX)
9e6b2b00 3344{
22c35a8c 3345 return (char*)PL_no_modify;
9e6b2b00
GS		 3346}
3347
3348U32 *
864dbfa3 3349Perl_get_opargs(pTHX)
9e6b2b00 3350{
22c35a8c 3351 return PL_opargs;
9e6b2b00 3352}
51aa15f3 3353
0cb96387
GS		 3354PPADDR_t*
3355Perl_get_ppaddr(pTHX)
3356{
3357 return &PL_ppaddr;
3358}
3359
a6c40364
GS		 3360#ifndef HAS_GETENV_LEN
3361char *
864dbfa3 3362Perl_getenv_len(pTHX_ char *env_elem, unsigned long *len)
a6c40364
GS		 3363{
3364 char *env_trans = PerlEnv_getenv(env_elem);
3365 if (env_trans)
3366 *len = strlen(env_trans);
3367 return env_trans;
f675dbe5
CB		 3368}
3369#endif
3370
dc9e4912
GS		 3371
3372MGVTBL*
864dbfa3 3373Perl_get_vtbl(pTHX_ int vtbl_id)
dc9e4912
GS		 3374{
3375 MGVTBL* result = Null(MGVTBL*);
3376
3377 switch(vtbl_id) {
3378 case want_vtbl_sv:
3379 result = &PL_vtbl_sv;
3380 break;
3381 case want_vtbl_env:
3382 result = &PL_vtbl_env;
3383 break;
3384 case want_vtbl_envelem:
3385 result = &PL_vtbl_envelem;
3386 break;
3387 case want_vtbl_sig:
3388 result = &PL_vtbl_sig;
3389 break;
3390 case want_vtbl_sigelem:
3391 result = &PL_vtbl_sigelem;
3392 break;
3393 case want_vtbl_pack:
3394 result = &PL_vtbl_pack;
3395 break;
3396 case want_vtbl_packelem:
3397 result = &PL_vtbl_packelem;
3398 break;
3399 case want_vtbl_dbline:
3400 result = &PL_vtbl_dbline;
3401 break;
3402 case want_vtbl_isa:
3403 result = &PL_vtbl_isa;
3404 break;
3405 case want_vtbl_isaelem:
3406 result = &PL_vtbl_isaelem;
3407 break;
3408 case want_vtbl_arylen:
3409 result = &PL_vtbl_arylen;
3410 break;
3411 case want_vtbl_glob:
3412 result = &PL_vtbl_glob;
3413 break;
3414 case want_vtbl_mglob:
3415 result = &PL_vtbl_mglob;
3416 break;
3417 case want_vtbl_nkeys:
3418 result = &PL_vtbl_nkeys;
3419 break;
3420 case want_vtbl_taint:
3421 result = &PL_vtbl_taint;
3422 break;
3423 case want_vtbl_substr:
3424 result = &PL_vtbl_substr;
3425 break;
3426 case want_vtbl_vec:
3427 result = &PL_vtbl_vec;
3428 break;
3429 case want_vtbl_pos:
3430 result = &PL_vtbl_pos;
3431 break;
3432 case want_vtbl_bm:
3433 result = &PL_vtbl_bm;
3434 break;
3435 case want_vtbl_fm:
3436 result = &PL_vtbl_fm;
3437 break;
3438 case want_vtbl_uvar:
3439 result = &PL_vtbl_uvar;
3440 break;
3441#ifdef USE_THREADS
3442 case want_vtbl_mutex:
3443 result = &PL_vtbl_mutex;
3444 break;
3445#endif
3446 case want_vtbl_defelem:
3447 result = &PL_vtbl_defelem;
3448 break;
3449 case want_vtbl_regexp:
3450 result = &PL_vtbl_regexp;
3451 break;
3452 case want_vtbl_regdata:
3453 result = &PL_vtbl_regdata;
3454 break;
3455 case want_vtbl_regdatum:
3456 result = &PL_vtbl_regdatum;
3457 break;
3c90161d 3458#ifdef USE_LOCALE_COLLATE
dc9e4912
GS		 3459 case want_vtbl_collxfrm:
3460 result = &PL_vtbl_collxfrm;
3461 break;
3c90161d 3462#endif
dc9e4912
GS		 3463 case want_vtbl_amagic:
3464 result = &PL_vtbl_amagic;
3465 break;
3466 case want_vtbl_amagicelem:
3467 result = &PL_vtbl_amagicelem;
3468 break;
810b8aa5
GS		 3469 case want_vtbl_backref:
3470 result = &PL_vtbl_backref;
3471 break;
dc9e4912
GS		 3472 }
3473 return result;
3474}
3475
767df6a1 3476I32
864dbfa3 3477Perl_my_fflush_all(pTHX)
767df6a1
JH		 3478{
3479#ifdef FFLUSH_NULL
ce720889 3480 return PerlIO_flush(NULL);
767df6a1
JH		 3481#else
3482 long open_max = -1;
ed39a0f2 3483# if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
d2201af2
AD		 3484# ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3485 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3486# else
767df6a1
JH		 3487# if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3488 open_max = sysconf(_SC_OPEN_MAX);
3489# else
3490# ifdef FOPEN_MAX
d2201af2 3491 open_max = FOPEN_MAX;
767df6a1
JH		 3492# else
3493# ifdef OPEN_MAX
d2201af2 3494 open_max = OPEN_MAX;
767df6a1
JH		 3495# else
3496# ifdef _NFILE
d2201af2 3497 open_max = _NFILE;
767df6a1
JH		 3498# endif
3499# endif
3500# endif
3501# endif
d2201af2 3502# endif
767df6a1
JH		 3503 if (open_max > 0) {
3504 long i;
3505 for (i = 0; i < open_max; i++)
d2201af2
AD		 3506 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3507 STDIO_STREAM_ARRAY[i]._file < open_max &&
3508 STDIO_STREAM_ARRAY[i]._flag)
3509 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
767df6a1
JH		 3510 return 0;
3511 }
3512# endif
3513 SETERRNO(EBADF,RMS$_IFI);
3514 return EOF;
3515#endif
3516}
097ee67d 3517
65202027 3518NV
5b877257 3519Perl_my_atof(pTHX_ const char* s) {
097ee67d 3520#ifdef USE_LOCALE_NUMERIC
d43ce814 3521 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
65202027 3522 NV x, y;
097ee67d 3523
65202027 3524 x = Perl_atof(s);
097ee67d 3525 SET_NUMERIC_STANDARD();
65202027 3526 y = Perl_atof(s);
097ee67d
JH		 3527 SET_NUMERIC_LOCAL();
3528 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3529 return y;
3530 return x;
65202027
DS		 3531 }
3532 else
3533 return Perl_atof(s);
097ee67d 3534#else
65202027 3535 return Perl_atof(s);
097ee67d
JH		 3536#endif
3537}
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