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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
c5be433b 1366#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1367char *
1368Perl_form_nocontext(const char* pat, ...)
1369{
1370 dTHX;
c5be433b 1371 char *retval;
cea2e8a9
GS		 1372 va_list args;
1373 va_start(args, pat);
c5be433b 1374 retval = vform(pat, &args);
cea2e8a9 1375 va_end(args);
c5be433b 1376 return retval;
cea2e8a9 1377}
c5be433b 1378#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9 1379
8990e307 1380char *
864dbfa3 1381Perl_form(pTHX_ const char* pat, ...)
8990e307 1382{
c5be433b 1383 char *retval;
46fc3d4c 1384 va_list args;
46fc3d4c 1385 va_start(args, pat);
c5be433b 1386 retval = vform(pat, &args);
46fc3d4c 1387 va_end(args);
c5be433b
GS		 1388 return retval;
1389}
1390
1391char *
1392Perl_vform(pTHX_ const char *pat, va_list *args)
1393{
1394 SV *sv = mess_alloc();
1395 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
e72dc28c 1396 return SvPVX(sv);
46fc3d4c 1397}
a687059c 1398
06bf62c7 1399SV *
864dbfa3 1400Perl_mess(pTHX_ const char *pat, va_list *args)
46fc3d4c 1401{
e72dc28c 1402 SV *sv = mess_alloc();
46fc3d4c 1403 static char dgd[] = " during global destruction.\n";
1404
fc36a67e 1405 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1406 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1407 dTHR;
cf2093f6 1408#ifdef IV_IS_QUAD
b9c39e73 1409 if (PL_curcop->cop_line)
cf2093f6
JH		 1410 Perl_sv_catpvf(aTHX_ sv, " at %_ line %" PERL_PRId64,
1411 GvSV(PL_curcop->cop_filegv), (IV)PL_curcop->cop_line);
1412#else
b9c39e73 1413 if (PL_curcop->cop_line)
cea2e8a9 1414 Perl_sv_catpvf(aTHX_ sv, " at %_ line %ld",
515f54a1 1415 GvSV(PL_curcop->cop_filegv), (long)PL_curcop->cop_line);
cf2093f6 1416#endif
515f54a1
GS		 1417 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1418 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1419 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
cf2093f6
JH		 1420#ifdef IV_IS_QUAD
1421 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %" PERL_PRId64,
1422 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1423 line_mode ? "line" : "chunk",
1424 (IV)IoLINES(GvIOp(PL_last_in_gv)));
1425#else
cea2e8a9 1426 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %ld",
515f54a1
GS		 1427 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1428 line_mode ? "line" : "chunk",
1429 (long)IoLINES(GvIOp(PL_last_in_gv)));
cf2093f6 1430#endif
a687059c 1431 }
9efbc0eb 1432#ifdef USE_THREADS
e8e6f333
GS		 1433 if (thr->tid)
1434 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
9efbc0eb 1435#endif
515f54a1 1436 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1437 }
06bf62c7 1438 return sv;
a687059c
LW		 1439}
1440
c5be433b
GS		 1441OP *
1442Perl_vdie(pTHX_ const char* pat, va_list *args)
36477c24 1443{
5dc0d613 1444 dTHR;
36477c24 1445 char *message;
3280af22 1446 int was_in_eval = PL_in_eval;
36477c24 1447 HV *stash;
1448 GV *gv;
1449 CV *cv;
06bf62c7
GS		 1450 SV *msv;
1451 STRLEN msglen;
36477c24 1452
8b73bbec 1453 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
199100c8 1454 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1455 thr, PL_curstack, PL_mainstack));
36477c24 1456
06bf62c7 1457 if (pat) {
cea2e8a9 1458 msv = mess(pat, args);
06bf62c7
GS		 1459 message = SvPV(msv,msglen);
1460 }
1461 else {
1462 message = Nullch;
1463 }
36477c24 1464
8b73bbec 1465 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
199100c8 1466 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1467 thr, message, PL_diehook));
3280af22 1468 if (PL_diehook) {
cea2e8a9 1469 /* sv_2cv might call Perl_croak() */
3280af22 1470 SV *olddiehook = PL_diehook;
1738f5c4 1471 ENTER;
3280af22
NIS		 1472 SAVESPTR(PL_diehook);
1473 PL_diehook = Nullsv;
1738f5c4
CS		 1474 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1475 LEAVE;
1476 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1477 dSP;
774d564b 1478 SV *msg;
1479
1480 ENTER;
79cb57f6 1481 if (message) {
06bf62c7 1482 msg = newSVpvn(message, msglen);
4e6ea2c3
GS		 1483 SvREADONLY_on(msg);
1484 SAVEFREESV(msg);
1485 }
1486 else {
1487 msg = ERRSV;
1488 }
1738f5c4 1489
e788e7d3 1490 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1491 PUSHMARK(SP);
1738f5c4
CS		 1492 XPUSHs(msg);
1493 PUTBACK;
864dbfa3 1494 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1495 POPSTACK;
774d564b 1496 LEAVE;
1738f5c4 1497 }
36477c24 1498 }
1499
06bf62c7 1500 PL_restartop = die_where(message, msglen);
8b73bbec 1501 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
7c06b590 1502 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1503 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1504 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1505 JMPENV_JUMP(3);
3280af22 1506 return PL_restartop;
36477c24 1507}
1508
c5be433b 1509#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1510OP *
1511Perl_die_nocontext(const char* pat, ...)
a687059c 1512{
cea2e8a9
GS		 1513 dTHX;
1514 OP *o;
a687059c 1515 va_list args;
cea2e8a9 1516 va_start(args, pat);
c5be433b 1517 o = vdie(pat, &args);
cea2e8a9
GS		 1518 va_end(args);
1519 return o;
1520}
c5be433b 1521#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9
GS		 1522
1523OP *
1524Perl_die(pTHX_ const char* pat, ...)
1525{
1526 OP *o;
1527 va_list args;
1528 va_start(args, pat);
c5be433b 1529 o = vdie(pat, &args);
cea2e8a9
GS		 1530 va_end(args);
1531 return o;
1532}
1533
c5be433b
GS		 1534void
1535Perl_vcroak(pTHX_ const char* pat, va_list *args)
cea2e8a9
GS		 1536{
1537 dTHR;
de3bb511 1538 char *message;
748a9306
LW		 1539 HV *stash;
1540 GV *gv;
1541 CV *cv;
06bf62c7
GS		 1542 SV *msv;
1543 STRLEN msglen;
a687059c 1544
cea2e8a9 1545 msv = mess(pat, args);
06bf62c7 1546 message = SvPV(msv,msglen);
8b73bbec 1547 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
3280af22 1548 if (PL_diehook) {
cea2e8a9 1549 /* sv_2cv might call Perl_croak() */
3280af22 1550 SV *olddiehook = PL_diehook;
1738f5c4 1551 ENTER;
3280af22
NIS		 1552 SAVESPTR(PL_diehook);
1553 PL_diehook = Nullsv;
20cec16a 1554 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS		 1555 LEAVE;
1556 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1557 dSP;
774d564b 1558 SV *msg;
1559
1560 ENTER;
06bf62c7 1561 msg = newSVpvn(message, msglen);
774d564b 1562 SvREADONLY_on(msg);
1563 SAVEFREESV(msg);
20cec16a 1564
e788e7d3 1565 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1566 PUSHMARK(SP);
1738f5c4 1567 XPUSHs(msg);
20cec16a 1568 PUTBACK;
864dbfa3 1569 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1570 POPSTACK;
774d564b 1571 LEAVE;
20cec16a 1572 }
748a9306 1573 }
3280af22 1574 if (PL_in_eval) {
06bf62c7 1575 PL_restartop = die_where(message, msglen);
6224f72b 1576 JMPENV_JUMP(3);
a0d0e21e 1577 }
d175a3f0
GS		 1578 {
1579#ifdef USE_SFIO
1580 /* SFIO can really mess with your errno */
1581 int e = errno;
1582#endif
06bf62c7 1583 PerlIO_write(PerlIO_stderr(), message, msglen);
d175a3f0
GS		 1584 (void)PerlIO_flush(PerlIO_stderr());
1585#ifdef USE_SFIO
1586 errno = e;
1587#endif
1588 }
f86702cc 1589 my_failure_exit();
a687059c
LW		 1590}
1591
c5be433b 1592#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1593void
cea2e8a9 1594Perl_croak_nocontext(const char *pat, ...)
a687059c 1595{
cea2e8a9 1596 dTHX;
a687059c 1597 va_list args;
cea2e8a9 1598 va_start(args, pat);
c5be433b 1599 vcroak(pat, &args);
cea2e8a9
GS		 1600 /* NOTREACHED */
1601 va_end(args);
1602}
1603#endif /* PERL_IMPLICIT_CONTEXT */
1604
1605void
1606Perl_croak(pTHX_ const char *pat, ...)
1607{
1608 va_list args;
1609 va_start(args, pat);
c5be433b 1610 vcroak(pat, &args);
cea2e8a9
GS		 1611 /* NOTREACHED */
1612 va_end(args);
1613}
1614
c5be433b
GS		 1615void
1616Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1617{
de3bb511 1618 char *message;
748a9306
LW		 1619 HV *stash;
1620 GV *gv;
1621 CV *cv;
06bf62c7
GS		 1622 SV *msv;
1623 STRLEN msglen;
a687059c 1624
cea2e8a9 1625 msv = mess(pat, args);
06bf62c7 1626 message = SvPV(msv, msglen);
a687059c 1627
3280af22 1628 if (PL_warnhook) {
cea2e8a9 1629 /* sv_2cv might call Perl_warn() */
11343788 1630 dTHR;
3280af22 1631 SV *oldwarnhook = PL_warnhook;
1738f5c4 1632 ENTER;
3280af22
NIS		 1633 SAVESPTR(PL_warnhook);
1634 PL_warnhook = Nullsv;
20cec16a 1635 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS		 1636 LEAVE;
1637 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1638 dSP;
774d564b 1639 SV *msg;
1640
1641 ENTER;
06bf62c7 1642 msg = newSVpvn(message, msglen);
774d564b 1643 SvREADONLY_on(msg);
1644 SAVEFREESV(msg);
1645
e788e7d3 1646 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1647 PUSHMARK(SP);
774d564b 1648 XPUSHs(msg);
20cec16a 1649 PUTBACK;
864dbfa3 1650 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1651 POPSTACK;
774d564b 1652 LEAVE;
20cec16a 1653 return;
1654 }
748a9306 1655 }
06bf62c7 1656 PerlIO_write(PerlIO_stderr(), message, msglen);
a687059c 1657#ifdef LEAKTEST
8c52afec
IZ		 1658 DEBUG_L(*message == '!'
1659 ? (xstat(message[1]=='!'
1660 ? (message[2]=='!' ? 2 : 1)
1661 : 0)
1662 , 0)
1663 : 0);
a687059c 1664#endif
20cec16a 1665 (void)PerlIO_flush(PerlIO_stderr());
a687059c 1666}
8d063cd8 1667
c5be433b 1668#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1669void
1670Perl_warn_nocontext(const char *pat, ...)
1671{
1672 dTHX;
1673 va_list args;
1674 va_start(args, pat);
c5be433b 1675 vwarn(pat, &args);
cea2e8a9
GS		 1676 va_end(args);
1677}
1678#endif /* PERL_IMPLICIT_CONTEXT */
1679
1680void
1681Perl_warn(pTHX_ const char *pat, ...)
1682{
1683 va_list args;
1684 va_start(args, pat);
c5be433b 1685 vwarn(pat, &args);
cea2e8a9
GS		 1686 va_end(args);
1687}
1688
c5be433b
GS		 1689#if defined(PERL_IMPLICIT_CONTEXT)
1690void
1691Perl_warner_nocontext(U32 err, const char *pat, ...)
1692{
1693 dTHX;
1694 va_list args;
1695 va_start(args, pat);
1696 vwarner(err, pat, &args);
1697 va_end(args);
1698}
1699#endif /* PERL_IMPLICIT_CONTEXT */
1700
599cee73 1701void
864dbfa3 1702Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM		 1703{
1704 va_list args;
c5be433b
GS		 1705 va_start(args, pat);
1706 vwarner(err, pat, &args);
1707 va_end(args);
1708}
1709
1710void
1711Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1712{
1713 dTHR;
599cee73
PM		 1714 char *message;
1715 HV *stash;
1716 GV *gv;
1717 CV *cv;
06bf62c7
GS		 1718 SV *msv;
1719 STRLEN msglen;
599cee73 1720
c5be433b 1721 msv = mess(pat, args);
06bf62c7 1722 message = SvPV(msv, msglen);
599cee73
PM		 1723
1724 if (ckDEAD(err)) {
1725#ifdef USE_THREADS
d008e5eb 1726 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
599cee73
PM		 1727#endif /* USE_THREADS */
1728 if (PL_diehook) {
cea2e8a9 1729 /* sv_2cv might call Perl_croak() */
599cee73
PM		 1730 SV *olddiehook = PL_diehook;
1731 ENTER;
1732 SAVESPTR(PL_diehook);
1733 PL_diehook = Nullsv;
1734 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1735 LEAVE;
1736 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1737 dSP;
1738 SV *msg;
1739
1740 ENTER;
06bf62c7 1741 msg = newSVpvn(message, msglen);
599cee73
PM		 1742 SvREADONLY_on(msg);
1743 SAVEFREESV(msg);
1744
1745 PUSHMARK(sp);
1746 XPUSHs(msg);
1747 PUTBACK;
864dbfa3 1748 call_sv((SV*)cv, G_DISCARD);
599cee73
PM		 1749
1750 LEAVE;
1751 }
1752 }
1753 if (PL_in_eval) {
06bf62c7 1754 PL_restartop = die_where(message, msglen);
599cee73
PM		 1755 JMPENV_JUMP(3);
1756 }
06bf62c7 1757 PerlIO_write(PerlIO_stderr(), message, msglen);
599cee73
PM		 1758 (void)PerlIO_flush(PerlIO_stderr());
1759 my_failure_exit();
1760
1761 }
1762 else {
1763 if (PL_warnhook) {
cea2e8a9 1764 /* sv_2cv might call Perl_warn() */
599cee73
PM		 1765 dTHR;
1766 SV *oldwarnhook = PL_warnhook;
1767 ENTER;
1768 SAVESPTR(PL_warnhook);
1769 PL_warnhook = Nullsv;
1770 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1771 LEAVE;
1772 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1773 dSP;
1774 SV *msg;
1775
1776 ENTER;
06bf62c7 1777 msg = newSVpvn(message, msglen);
599cee73
PM		 1778 SvREADONLY_on(msg);
1779 SAVEFREESV(msg);
1780
1781 PUSHMARK(sp);
1782 XPUSHs(msg);
1783 PUTBACK;
864dbfa3 1784 call_sv((SV*)cv, G_DISCARD);
599cee73
PM		 1785
1786 LEAVE;
1787 return;
1788 }
1789 }
06bf62c7 1790 PerlIO_write(PerlIO_stderr(), message, msglen);
599cee73
PM		 1791#ifdef LEAKTEST
1792 DEBUG_L(xstat());
1793#endif
1794 (void)PerlIO_flush(PerlIO_stderr());
1795 }
1796}
1797
a0d0e21e 1798#ifndef VMS /* VMS' my_setenv() is in VMS.c */
2c2d71f5 1799#if !defined(WIN32) && !defined(CYGWIN)
8d063cd8 1800void
864dbfa3 1801Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1802{
f2517201
GS		 1803#ifndef PERL_USE_SAFE_PUTENV
1804 /* most putenv()s leak, so we manipulate environ directly */
79072805 1805 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1806
3280af22 1807 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW		 1808 I32 j;
1809 I32 max;
fe14fcc3
LW		 1810 char **tmpenv;
1811
de3bb511 1812 /*SUPPRESS 530*/
fe14fcc3 1813 for (max = i; environ[max]; max++) ;
f2517201
GS		 1814 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1815 for (j=0; j<max; j++) { /* copy environment */
1816 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1817 strcpy(tmpenv[j], environ[j]);
1818 }
fe14fcc3
LW		 1819 tmpenv[max] = Nullch;
1820 environ = tmpenv; /* tell exec where it is now */
1821 }
a687059c 1822 if (!val) {
f2517201 1823 safesysfree(environ[i]);
a687059c
LW		 1824 while (environ[i]) {
1825 environ[i] = environ[i+1];
1826 i++;
1827 }
1828 return;
1829 }
8d063cd8 1830 if (!environ[i]) { /* does not exist yet */
f2517201 1831 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW		 1832 environ[i+1] = Nullch; /* make sure it's null terminated */
1833 }
fe14fcc3 1834 else
f2517201
GS		 1835 safesysfree(environ[i]);
1836 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1837
62b28dd9 1838#ifndef MSDOS
a687059c 1839 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
62b28dd9
LW		 1840#else
1841 /* MS-DOS requires environment variable names to be in uppercase */
fe14fcc3
LW		 1842 /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but
1843 * some utilities and applications may break because they only look
1844 * for upper case strings. (Fixed strupr() bug here.)]
1845 */
1846 strcpy(environ[i],nam); strupr(environ[i]);
62b28dd9
LW		 1847 (void)sprintf(environ[i] + strlen(nam),"=%s",val);
1848#endif /* MSDOS */
f2517201
GS		 1849
1850#else /* PERL_USE_SAFE_PUTENV */
1851 char *new_env;
1852
1853 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
1854#ifndef MSDOS
1855 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
1856#else
1857 strcpy(new_env,nam); strupr(new_env);
1858 (void)sprintf(new_env + strlen(nam),"=%s",val);
1859#endif
1860 (void)putenv(new_env);
1861#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW		 1862}
1863
2c2d71f5
JH		 1864#else /* WIN32 || CYGWIN */
1865#if defined(CYGWIN)
1cab015a
EF		 1866/*
1867 * Save environ of perl.exe, currently Cygwin links in separate environ's
1868 * for each exe/dll. Probably should be a member of impure_ptr.
1869 */
1870static char ***Perl_main_environ;
1871
1872EXTERN_C void
1873Perl_my_setenv_init(char ***penviron)
1874{
1875 Perl_main_environ = penviron;
1876}
1877
1878void
1879my_setenv(char *nam, char *val)
1880{
1881 /* You can not directly manipulate the environ[] array because
1882 * the routines do some additional work that syncs the Cygwin
1883 * environment with the Windows environment.
1884 */
1885 char *oldstr = environ[setenv_getix(nam)];
1886
1887 if (!val) {
1888 if (!oldstr)
1889 return;
1890 unsetenv(nam);
1891 Safefree(oldstr);
1892 return;
1893 }
1894 setenv(nam, val, 1);
1895 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1896 if(oldstr && environ[setenv_getix(nam)] != oldstr)
1897 Safefree(oldstr);
1898}
3e3baf6d 1899#else /* if WIN32 */
68dc0745 1900
1901void
864dbfa3 1902Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 1903{
3e3baf6d
TB		 1904
1905#ifdef USE_WIN32_RTL_ENV
1906
68dc0745 1907 register char *envstr;
1908 STRLEN namlen = strlen(nam);
3e3baf6d
TB		 1909 STRLEN vallen;
1910 char *oldstr = environ[setenv_getix(nam)];
1911
1912 /* putenv() has totally broken semantics in both the Borland
1913 * and Microsoft CRTLs. They either store the passed pointer in
1914 * the environment without making a copy, or make a copy and don't
1915 * free it. And on top of that, they dont free() old entries that
1916 * are being replaced/deleted. This means the caller must
1917 * free any old entries somehow, or we end up with a memory
1918 * leak every time my_setenv() is called. One might think
1919 * one could directly manipulate environ[], like the UNIX code
1920 * above, but direct changes to environ are not allowed when
1921 * calling putenv(), since the RTLs maintain an internal
1922 * *copy* of environ[]. Bad, bad, *bad* stink.
1923 * GSAR 97-06-07
1924 */
68dc0745 1925
3e3baf6d
TB		 1926 if (!val) {
1927 if (!oldstr)
1928 return;
1929 val = "";
1930 vallen = 0;
1931 }
1932 else
1933 vallen = strlen(val);
f2517201 1934 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 1935 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 1936 (void)PerlEnv_putenv(envstr);
3e3baf6d 1937 if (oldstr)
f2517201 1938 safesysfree(oldstr);
3e3baf6d 1939#ifdef _MSC_VER
f2517201 1940 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB		 1941#endif
1942
1943#else /* !USE_WIN32_RTL_ENV */
1944
ac5c734f
GS		 1945 register char *envstr;
1946 STRLEN len = strlen(nam) + 3;
1947 if (!val) {
1948 val = "";
1949 }
1950 len += strlen(val);
1951 New(904, envstr, len, char);
1952 (void)sprintf(envstr,"%s=%s",nam,val);
1953 (void)PerlEnv_putenv(envstr);
1954 Safefree(envstr);
3e3baf6d
TB		 1955
1956#endif
1957}
1958
1959#endif /* WIN32 */
1cab015a 1960#endif
3e3baf6d
TB		 1961
1962I32
864dbfa3 1963Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB		 1964{
1965 register I32 i, len = strlen(nam);
1966
1967 for (i = 0; environ[i]; i++) {
1968 if (
1969#ifdef WIN32
1970 strnicmp(environ[i],nam,len) == 0
1971#else
1972 strnEQ(environ[i],nam,len)
1973#endif
1974 && environ[i][len] == '=')
1975 break; /* strnEQ must come first to avoid */
1976 } /* potential SEGV's */
1977 return i;
68dc0745 1978}
1979
a0d0e21e 1980#endif /* !VMS */
378cc40b 1981
16d20bd9 1982#ifdef UNLINK_ALL_VERSIONS
79072805 1983I32
864dbfa3 1984Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 1985{
79072805 1986 I32 i;
378cc40b 1987
6ad3d225 1988 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW		 1989 return i ? 0 : -1;
1990}
1991#endif
1992
85e6fe83 1993#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 1994char *
864dbfa3 1995Perl_my_bcopy(pTHX_ register const char *from,register char *to,register I32 len)
378cc40b
LW		 1996{
1997 char *retval = to;
1998
7c0587c8
LW		 1999 if (from - to >= 0) {
2000 while (len--)
2001 *to++ = *from++;
2002 }
2003 else {
2004 to += len;
2005 from += len;
2006 while (len--)
faf8582f 2007 *(--to) = *(--from);
7c0587c8 2008 }
378cc40b
LW		 2009 return retval;
2010}
ffed7fef 2011#endif
378cc40b 2012
fc36a67e 2013#ifndef HAS_MEMSET
2014void *
864dbfa3 2015Perl_my_memset(pTHX_ register char *loc, register I32 ch, register I32 len)
fc36a67e 2016{
2017 char *retval = loc;
2018
2019 while (len--)
2020 *loc++ = ch;
2021 return retval;
2022}
2023#endif
2024
7c0587c8 2025#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 2026char *
864dbfa3 2027Perl_my_bzero(pTHX_ register char *loc, register I32 len)
378cc40b
LW		 2028{
2029 char *retval = loc;
2030
2031 while (len--)
2032 *loc++ = 0;
2033 return retval;
2034}
2035#endif
7c0587c8 2036
36477c24 2037#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2038I32
864dbfa3 2039Perl_my_memcmp(pTHX_ const char *s1, const char *s2, register I32 len)
7c0587c8 2040{
36477c24 2041 register U8 *a = (U8 *)s1;
2042 register U8 *b = (U8 *)s2;
79072805 2043 register I32 tmp;
7c0587c8
LW		 2044
2045 while (len--) {
36477c24 2046 if (tmp = *a++ - *b++)
7c0587c8
LW		 2047 return tmp;
2048 }
2049 return 0;
2050}
36477c24 2051#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2052
fe14fcc3 2053#ifndef HAS_VPRINTF
a687059c 2054
85e6fe83 2055#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2056char *
2057#else
2058int
2059#endif
08105a92 2060vsprintf(char *dest, const char *pat, char *args)
a687059c
LW		 2061{
2062 FILE fakebuf;
2063
2064 fakebuf._ptr = dest;
2065 fakebuf._cnt = 32767;
35c8bce7
LW		 2066#ifndef _IOSTRG
2067#define _IOSTRG 0
2068#endif
a687059c
LW		 2069 fakebuf._flag = _IOWRT|_IOSTRG;
2070 _doprnt(pat, args, &fakebuf); /* what a kludge */
2071 (void)putc('\0', &fakebuf);
85e6fe83 2072#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2073 return(dest);
2074#else
2075 return 0; /* perl doesn't use return value */
2076#endif
2077}
2078
fe14fcc3 2079#endif /* HAS_VPRINTF */
a687059c
LW		 2080
2081#ifdef MYSWAP
ffed7fef 2082#if BYTEORDER != 0x4321
a687059c 2083short
864dbfa3 2084Perl_my_swap(pTHX_ short s)
a687059c
LW		 2085{
2086#if (BYTEORDER & 1) == 0
2087 short result;
2088
2089 result = ((s & 255) << 8) + ((s >> 8) & 255);
2090 return result;
2091#else
2092 return s;
2093#endif
2094}
2095
2096long
864dbfa3 2097Perl_my_htonl(pTHX_ long l)
a687059c
LW		 2098{
2099 union {
2100 long result;
ffed7fef 2101 char c[sizeof(long)];
a687059c
LW		 2102 } u;
2103
ffed7fef 2104#if BYTEORDER == 0x1234
a687059c
LW		 2105 u.c[0] = (l >> 24) & 255;
2106 u.c[1] = (l >> 16) & 255;
2107 u.c[2] = (l >> 8) & 255;
2108 u.c[3] = l & 255;
2109 return u.result;
2110#else
ffed7fef 2111#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2112 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2113#else
79072805
LW		 2114 register I32 o;
2115 register I32 s;
a687059c 2116
ffed7fef
LW		 2117 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2118 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW		 2119 }
2120 return u.result;
2121#endif
2122#endif
2123}
2124
2125long
864dbfa3 2126Perl_my_ntohl(pTHX_ long l)
a687059c
LW		 2127{
2128 union {
2129 long l;
ffed7fef 2130 char c[sizeof(long)];
a687059c
LW		 2131 } u;
2132
ffed7fef 2133#if BYTEORDER == 0x1234
a687059c
LW		 2134 u.c[0] = (l >> 24) & 255;
2135 u.c[1] = (l >> 16) & 255;
2136 u.c[2] = (l >> 8) & 255;
2137 u.c[3] = l & 255;
2138 return u.l;
2139#else
ffed7fef 2140#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2141 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2142#else
79072805
LW		 2143 register I32 o;
2144 register I32 s;
a687059c
LW		 2145
2146 u.l = l;
2147 l = 0;
ffed7fef
LW		 2148 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2149 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW		 2150 }
2151 return l;
2152#endif
2153#endif
2154}
2155
ffed7fef 2156#endif /* BYTEORDER != 0x4321 */
988174c1
LW		 2157#endif /* MYSWAP */
2158
2159/*
2160 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2161 * If these functions are defined,
2162 * the BYTEORDER is neither 0x1234 nor 0x4321.
2163 * However, this is not assumed.
2164 * -DWS
2165 */
2166
2167#define HTOV(name,type) \
2168 type \
ba106d47 2169 name (register type n) \
988174c1
LW		 2170 { \
2171 union { \
2172 type value; \
2173 char c[sizeof(type)]; \
2174 } u; \
79072805
LW		 2175 register I32 i; \
2176 register I32 s; \
988174c1
LW		 2177 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2178 u.c[i] = (n >> s) & 0xFF; \
2179 } \
2180 return u.value; \
2181 }
2182
2183#define VTOH(name,type) \
2184 type \
ba106d47 2185 name (register type n) \
988174c1
LW		 2186 { \
2187 union { \
2188 type value; \
2189 char c[sizeof(type)]; \
2190 } u; \
79072805
LW		 2191 register I32 i; \
2192 register I32 s; \
988174c1
LW		 2193 u.value = n; \
2194 n = 0; \
2195 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2196 n += (u.c[i] & 0xFF) << s; \
2197 } \
2198 return n; \
2199 }
2200
2201#if defined(HAS_HTOVS) && !defined(htovs)
2202HTOV(htovs,short)
2203#endif
2204#if defined(HAS_HTOVL) && !defined(htovl)
2205HTOV(htovl,long)
2206#endif
2207#if defined(HAS_VTOHS) && !defined(vtohs)
2208VTOH(vtohs,short)
2209#endif
2210#if defined(HAS_VTOHL) && !defined(vtohl)
2211VTOH(vtohl,long)
2212#endif
a687059c 2213
5f05dabc 2214 /* VMS' my_popen() is in VMS.c, same with OS/2. */
4d2c4e07 2215#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC)
760ac839 2216PerlIO *
864dbfa3 2217Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW		 2218{
2219 int p[2];
8ac85365 2220 register I32 This, that;
79072805
LW		 2221 register I32 pid;
2222 SV *sv;
1738f5c4 2223 I32 doexec = strNE(cmd,"-");
e446cec8
IZ		 2224 I32 did_pipes = 0;
2225 int pp[2];
a687059c 2226
45bc9206 2227 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ		 2228#ifdef OS2
2229 if (doexec) {
2230 return my_syspopen(cmd,mode);
2231 }
2232#endif
8ac85365
NIS		 2233 This = (*mode == 'w');
2234 that = !This;
3280af22 2235 if (doexec && PL_tainting) {
bbce6d69 2236 taint_env();
2237 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2238 }
c2267164
IZ		 2239 if (PerlProc_pipe(p) < 0)
2240 return Nullfp;
e446cec8
IZ		 2241 if (doexec && PerlProc_pipe(pp) >= 0)
2242 did_pipes = 1;
a687059c
LW		 2243 while ((pid = (doexec?vfork():fork())) < 0) {
2244 if (errno != EAGAIN) {
6ad3d225 2245 PerlLIO_close(p[This]);
e446cec8
IZ		 2246 if (did_pipes) {
2247 PerlLIO_close(pp[0]);
2248 PerlLIO_close(pp[1]);
2249 }
a687059c 2250 if (!doexec)
cea2e8a9 2251 Perl_croak(aTHX_ "Can't fork");
a687059c
LW		 2252 return Nullfp;
2253 }
2254 sleep(5);
2255 }
2256 if (pid == 0) {
79072805
LW		 2257 GV* tmpgv;
2258
30ac6d9b
GS		 2259#undef THIS
2260#undef THAT
a687059c 2261#define THIS that
8ac85365 2262#define THAT This
6ad3d225 2263 PerlLIO_close(p[THAT]);
e446cec8
IZ		 2264 if (did_pipes) {
2265 PerlLIO_close(pp[0]);
2266#if defined(HAS_FCNTL) && defined(F_SETFD)
2267 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2268#endif
2269 }
a687059c 2270 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS		 2271 PerlLIO_dup2(p[THIS], *mode == 'r');
2272 PerlLIO_close(p[THIS]);
a687059c 2273 }
4435c477 2274#ifndef OS2
a687059c 2275 if (doexec) {
a0d0e21e 2276#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW		 2277 int fd;
2278
2279#ifndef NOFILE
2280#define NOFILE 20
2281#endif
6b88bc9c 2282 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ		 2283 if (fd != pp[1])
2284 PerlLIO_close(fd);
ae986130 2285#endif
e446cec8 2286 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2287 PerlProc__exit(1);
a687059c 2288 }
4435c477 2289#endif /* defined OS2 */
de3bb511 2290 /*SUPPRESS 560*/
85e6fe83 2291 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
1e422769 2292 sv_setiv(GvSV(tmpgv), (IV)getpid());
3280af22
NIS		 2293 PL_forkprocess = 0;
2294 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW		 2295 return Nullfp;
2296#undef THIS
2297#undef THAT
2298 }
62b28dd9 2299 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2300 PerlLIO_close(p[that]);
e446cec8
IZ		 2301 if (did_pipes)
2302 PerlLIO_close(pp[1]);
8ac85365 2303 if (p[that] < p[This]) {
6ad3d225
GS		 2304 PerlLIO_dup2(p[This], p[that]);
2305 PerlLIO_close(p[This]);
8ac85365 2306 p[This] = p[that];
62b28dd9 2307 }
3280af22 2308 sv = *av_fetch(PL_fdpid,p[This],TRUE);
a0d0e21e 2309 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2310 SvIVX(sv) = pid;
3280af22 2311 PL_forkprocess = pid;
e446cec8
IZ		 2312 if (did_pipes && pid > 0) {
2313 int errkid;
2314 int n = 0, n1;
2315
2316 while (n < sizeof(int)) {
2317 n1 = PerlLIO_read(pp[0],
2318 (void*)(((char*)&errkid)+n),
2319 (sizeof(int)) - n);
2320 if (n1 <= 0)
2321 break;
2322 n += n1;
2323 }
2f96c702
IZ		 2324 PerlLIO_close(pp[0]);
2325 did_pipes = 0;
e446cec8
IZ		 2326 if (n) { /* Error */
2327 if (n != sizeof(int))
cea2e8a9 2328 Perl_croak(aTHX_ "panic: kid popen errno read");
e446cec8
IZ		 2329 errno = errkid; /* Propagate errno from kid */
2330 return Nullfp;
2331 }
2332 }
2333 if (did_pipes)
2334 PerlLIO_close(pp[0]);
8ac85365 2335 return PerlIO_fdopen(p[This], mode);
a687059c 2336}
7c0587c8 2337#else
55497cff 2338#if defined(atarist) || defined(DJGPP)
7c0587c8 2339FILE *popen();
760ac839 2340PerlIO *
864dbfa3 2341Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2342{
760ac839 2343 /* Needs work for PerlIO ! */
55497cff 2344 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 2345 PERL_FLUSHALL_FOR_CHILD;
55497cff 2346 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW		 2347}
2348#endif
2349
2350#endif /* !DOSISH */
a687059c 2351
748a9306 2352#ifdef DUMP_FDS
35ff7856 2353void
864dbfa3 2354Perl_dump_fds(pTHX_ char *s)
ae986130
LW		 2355{
2356 int fd;
2357 struct stat tmpstatbuf;
2358
760ac839 2359 PerlIO_printf(PerlIO_stderr(),"%s", s);
ae986130 2360 for (fd = 0; fd < 32; fd++) {
6ad3d225 2361 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
760ac839 2362 PerlIO_printf(PerlIO_stderr()," %d",fd);
ae986130 2363 }
760ac839 2364 PerlIO_printf(PerlIO_stderr(),"\n");
ae986130 2365}
35ff7856 2366#endif /* DUMP_FDS */
ae986130 2367
fe14fcc3 2368#ifndef HAS_DUP2
fec02dd3 2369int
ba106d47 2370dup2(int oldfd, int newfd)
a687059c 2371{
a0d0e21e 2372#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD		 2373 if (oldfd == newfd)
2374 return oldfd;
6ad3d225 2375 PerlLIO_close(newfd);
fec02dd3 2376 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2377#else
fc36a67e 2378#define DUP2_MAX_FDS 256
2379 int fdtmp[DUP2_MAX_FDS];
79072805 2380 I32 fdx = 0;
ae986130
LW		 2381 int fd;
2382
fe14fcc3 2383 if (oldfd == newfd)
fec02dd3 2384 return oldfd;
6ad3d225 2385 PerlLIO_close(newfd);
fc36a67e 2386 /* good enough for low fd's... */
6ad3d225 2387 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2388 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2389 PerlLIO_close(fd);
fc36a67e 2390 fd = -1;
2391 break;
2392 }
ae986130 2393 fdtmp[fdx++] = fd;
fc36a67e 2394 }
ae986130 2395 while (fdx > 0)
6ad3d225 2396 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2397 return fd;
62b28dd9 2398#endif
a687059c
LW		 2399}
2400#endif
2401
ff68c719 2402
2403#ifdef HAS_SIGACTION
2404
2405Sighandler_t
864dbfa3 2406Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2407{
2408 struct sigaction act, oact;
2409
2410 act.sa_handler = handler;
2411 sigemptyset(&act.sa_mask);
2412 act.sa_flags = 0;
2413#ifdef SA_RESTART
2414 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2415#endif
85264bed
CS		 2416#ifdef SA_NOCLDWAIT
2417 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2418 act.sa_flags |= SA_NOCLDWAIT;
2419#endif
ff68c719 2420 if (sigaction(signo, &act, &oact) == -1)
36477c24 2421 return SIG_ERR;
ff68c719 2422 else
36477c24 2423 return oact.sa_handler;
ff68c719 2424}
2425
2426Sighandler_t
864dbfa3 2427Perl_rsignal_state(pTHX_ int signo)
ff68c719 2428{
2429 struct sigaction oact;
2430
2431 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2432 return SIG_ERR;
2433 else
2434 return oact.sa_handler;
2435}
2436
2437int
864dbfa3 2438Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2439{
2440 struct sigaction act;
2441
2442 act.sa_handler = handler;
2443 sigemptyset(&act.sa_mask);
2444 act.sa_flags = 0;
2445#ifdef SA_RESTART
2446 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2447#endif
85264bed
CS		 2448#ifdef SA_NOCLDWAIT
2449 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2450 act.sa_flags |= SA_NOCLDWAIT;
2451#endif
ff68c719 2452 return sigaction(signo, &act, save);
2453}
2454
2455int
864dbfa3 2456Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2457{
2458 return sigaction(signo, save, (struct sigaction *)NULL);
2459}
2460
2461#else /* !HAS_SIGACTION */
2462
2463Sighandler_t
864dbfa3 2464Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2465{
6ad3d225 2466 return PerlProc_signal(signo, handler);
ff68c719 2467}
2468
2469static int sig_trapped;
2470
2471static
2472Signal_t
4e35701f 2473sig_trap(int signo)
ff68c719 2474{
2475 sig_trapped++;
2476}
2477
2478Sighandler_t
864dbfa3 2479Perl_rsignal_state(pTHX_ int signo)
ff68c719 2480{
2481 Sighandler_t oldsig;
2482
2483 sig_trapped = 0;
6ad3d225
GS		 2484 oldsig = PerlProc_signal(signo, sig_trap);
2485 PerlProc_signal(signo, oldsig);
ff68c719 2486 if (sig_trapped)
6ad3d225 2487 PerlProc_kill(getpid(), signo);
ff68c719 2488 return oldsig;
2489}
2490
2491int
864dbfa3 2492Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2493{
6ad3d225 2494 *save = PerlProc_signal(signo, handler);
ff68c719 2495 return (*save == SIG_ERR) ? -1 : 0;
2496}
2497
2498int
864dbfa3 2499Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2500{
6ad3d225 2501 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719 2502}
2503
2504#endif /* !HAS_SIGACTION */
2505
5f05dabc 2506 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
4d2c4e07 2507#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC)
79072805 2508I32
864dbfa3 2509Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2510{
ff68c719 2511 Sigsave_t hstat, istat, qstat;
a687059c 2512 int status;
a0d0e21e 2513 SV **svp;
20188a90 2514 int pid;
1d3434b8 2515 int pid2;
03136e13
CS		 2516 bool close_failed;
2517 int saved_errno;
2518#ifdef VMS
2519 int saved_vaxc_errno;
2520#endif
22fae026
TM		 2521#ifdef WIN32
2522 int saved_win32_errno;
2523#endif
a687059c 2524
3280af22 2525 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
748a9306 2526 pid = (int)SvIVX(*svp);
a0d0e21e 2527 SvREFCNT_dec(*svp);
3280af22 2528 *svp = &PL_sv_undef;
ddcf38b7
IZ		 2529#ifdef OS2
2530 if (pid == -1) { /* Opened by popen. */
2531 return my_syspclose(ptr);
2532 }
2533#endif
03136e13
CS		 2534 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2535 saved_errno = errno;
2536#ifdef VMS
2537 saved_vaxc_errno = vaxc$errno;
2538#endif
22fae026
TM		 2539#ifdef WIN32
2540 saved_win32_errno = GetLastError();
2541#endif
03136e13 2542 }
7c0587c8 2543#ifdef UTS
6ad3d225 2544 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2545#endif
ff68c719 2546 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2547 rsignal_save(SIGINT, SIG_IGN, &istat);
2548 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306 2549 do {
1d3434b8
GS		 2550 pid2 = wait4pid(pid, &status, 0);
2551 } while (pid2 == -1 && errno == EINTR);
ff68c719 2552 rsignal_restore(SIGHUP, &hstat);
2553 rsignal_restore(SIGINT, &istat);
2554 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS		 2555 if (close_failed) {
2556 SETERRNO(saved_errno, saved_vaxc_errno);
2557 return -1;
2558 }
1d3434b8 2559 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2560}
4633a7c4
LW		 2561#endif /* !DOSISH */
2562
2c2d71f5 2563#if !defined(DOSISH) || defined(OS2) || defined(WIN32)
79072805 2564I32
864dbfa3 2565Perl_wait4pid(pTHX_ int pid, int *statusp, int flags)
20188a90 2566{
79072805
LW		 2567 SV *sv;
2568 SV** svp;
fc36a67e 2569 char spid[TYPE_CHARS(int)];
20188a90
LW		 2570
2571 if (!pid)
2572 return -1;
20188a90
LW		 2573 if (pid > 0) {
2574 sprintf(spid, "%d", pid);
3280af22
NIS		 2575 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2576 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2577 *statusp = SvIVX(*svp);
3280af22 2578 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2579 return pid;
2580 }
2581 }
2582 else {
79072805 2583 HE *entry;
20188a90 2584
3280af22
NIS		 2585 hv_iterinit(PL_pidstatus);
2586 if (entry = hv_iternext(PL_pidstatus)) {
a0d0e21e 2587 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2588 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2589 *statusp = SvIVX(sv);
20188a90 2590 sprintf(spid, "%d", pid);
3280af22 2591 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2592 return pid;
2593 }
2594 }
79072805 2595#ifdef HAS_WAITPID
367f3c24
IZ		 2596# ifdef HAS_WAITPID_RUNTIME
2597 if (!HAS_WAITPID_RUNTIME)
2598 goto hard_way;
2599# endif
f55ee38a 2600 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ		 2601#endif
2602#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2603 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ		 2604#endif
2605#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2606 hard_way:
a0d0e21e
LW		 2607 {
2608 I32 result;
2609 if (flags)
cea2e8a9 2610 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2611 else {
76e3520e 2612 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW		 2613 pidgone(result,*statusp);
2614 if (result < 0)
2615 *statusp = -1;
2616 }
2617 return result;
a687059c
LW		 2618 }
2619#endif
a687059c 2620}
2d7a9237 2621#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2622
7c0587c8 2623void
de3bb511 2624/*SUPPRESS 590*/
864dbfa3 2625Perl_pidgone(pTHX_ int pid, int status)
a687059c 2626{
79072805 2627 register SV *sv;
fc36a67e 2628 char spid[TYPE_CHARS(int)];
a687059c 2629
20188a90 2630 sprintf(spid, "%d", pid);
3280af22 2631 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2632 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2633 SvIVX(sv) = status;
20188a90 2634 return;
a687059c
LW		 2635}
2636
55497cff 2637#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2638int pclose();
ddcf38b7
IZ		 2639#ifdef HAS_FORK
2640int /* Cannot prototype with I32
2641 in os2ish.h. */
ba106d47 2642my_syspclose(PerlIO *ptr)
ddcf38b7 2643#else
79072805 2644I32
864dbfa3 2645Perl_my_pclose(pTHX_ PerlIO *ptr)
ddcf38b7 2646#endif
a687059c 2647{
760ac839
LW		 2648 /* Needs work for PerlIO ! */
2649 FILE *f = PerlIO_findFILE(ptr);
2650 I32 result = pclose(f);
2651 PerlIO_releaseFILE(ptr,f);
2652 return result;
a687059c 2653}
7c0587c8 2654#endif
9f68db38
LW		 2655
2656void
864dbfa3 2657Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2658{
79072805 2659 register I32 todo;
08105a92 2660 register const char *frombase = from;
9f68db38
LW		 2661
2662 if (len == 1) {
08105a92 2663 register const char c = *from;
9f68db38 2664 while (count-- > 0)
5926133d 2665 *to++ = c;
9f68db38
LW		 2666 return;
2667 }
2668 while (count-- > 0) {
2669 for (todo = len; todo > 0; todo--) {
2670 *to++ = *from++;
2671 }
2672 from = frombase;
2673 }
2674}
0f85fab0 2675
463ee0b2 2676U32
65202027 2677Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW		 2678{
2679 long along;
2680
27e2fb84 2681#if CASTFLAGS & 2
34de22dd
LW		 2682# define BIGDOUBLE 2147483648.0
2683 if (f >= BIGDOUBLE)
2684 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2685#endif
0f85fab0
LW		 2686 if (f >= 0.0)
2687 return (unsigned long)f;
2688 along = (long)f;
2689 return (unsigned long)along;
2690}
ed6116ce 2691# undef BIGDOUBLE
5d94fbed 2692
5d94fbed
AD		 2693/* Unfortunately, on some systems the cast_uv() function doesn't
2694 work with the system-supplied definition of ULONG_MAX. The
2695 comparison (f >= ULONG_MAX) always comes out true. It must be a
2696 problem with the compiler constant folding.
2697
2698 In any case, this workaround should be fine on any two's complement
2699 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2700 ccflags.
2701 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2702*/
1eb770ff 2703
2704/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2705 of LONG_(MIN/MAX).
2706 -- Kenneth Albanowski <kjahds@kjahds.com>
2707*/
2708
20cec16a 2709#ifndef MY_UV_MAX
2710# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD		 2711#endif
2712
ed6116ce 2713I32
65202027 2714Perl_cast_i32(pTHX_ NV f)
ed6116ce 2715{
20cec16a 2716 if (f >= I32_MAX)
2717 return (I32) I32_MAX;
2718 if (f <= I32_MIN)
2719 return (I32) I32_MIN;
ed6116ce
LW		 2720 return (I32) f;
2721}
a0d0e21e
LW		 2722
2723IV
65202027 2724Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2725{
25da4f38
IZ		 2726 if (f >= IV_MAX) {
2727 UV uv;
2728
65202027 2729 if (f >= (NV)UV_MAX)
25da4f38
IZ		 2730 return (IV) UV_MAX;
2731 uv = (UV) f;
2732 return (IV)uv;
2733 }
20cec16a 2734 if (f <= IV_MIN)
2735 return (IV) IV_MIN;
a0d0e21e
LW		 2736 return (IV) f;
2737}
5d94fbed
AD		 2738
2739UV
65202027 2740Perl_cast_uv(pTHX_ NV f)
5d94fbed 2741{
20cec16a 2742 if (f >= MY_UV_MAX)
2743 return (UV) MY_UV_MAX;
25da4f38
IZ		 2744 if (f < 0) {
2745 IV iv;
2746
2747 if (f < IV_MIN)
2748 return (UV)IV_MIN;
2749 iv = (IV) f;
2750 return (UV) iv;
2751 }
5d94fbed
AD		 2752 return (UV) f;
2753}
2754
fe14fcc3 2755#ifndef HAS_RENAME
79072805 2756I32
864dbfa3 2757Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2758{
93a17b20
LW		 2759 char *fa = strrchr(a,'/');
2760 char *fb = strrchr(b,'/');
62b28dd9
LW		 2761 struct stat tmpstatbuf1;
2762 struct stat tmpstatbuf2;
46fc3d4c 2763 SV *tmpsv = sv_newmortal();
62b28dd9
LW		 2764
2765 if (fa)
2766 fa++;
2767 else
2768 fa = a;
2769 if (fb)
2770 fb++;
2771 else
2772 fb = b;
2773 if (strNE(a,b))
2774 return FALSE;
2775 if (fa == a)
46fc3d4c 2776 sv_setpv(tmpsv, ".");
62b28dd9 2777 else
46fc3d4c 2778 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2779 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW		 2780 return FALSE;
2781 if (fb == b)
46fc3d4c 2782 sv_setpv(tmpsv, ".");
62b28dd9 2783 else
46fc3d4c 2784 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2785 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW		 2786 return FALSE;
2787 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2788 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2789}
fe14fcc3
LW		 2790#endif /* !HAS_RENAME */
2791
9e24b6e2 2792NV
864dbfa3 2793Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
4f19785b
WSI		 2794{
2795 register char *s = start;
9e24b6e2
JH		 2796 register NV rnv = 0.0;
2797 register UV ruv = 0;
252aa082 2798 register bool seenb = FALSE;
9e24b6e2 2799 register bool overflowed = FALSE;
252aa082
JH		 2800
2801 for (; len-- && *s; s++) {
2802 if (!(*s == '0' || *s == '1')) {
2803 if (*s == '_')
9e24b6e2 2804 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 2805 if (seenb == FALSE && *s == 'b' && ruv == 0) {
252aa082
JH		 2806 /* Disallow 0bbb0b0bbb... */
2807 seenb = TRUE;
252aa082
JH		 2808 continue;
2809 }
2810 else {
2811 dTHR;
627300f0
JH		 2812 if (ckWARN(WARN_DIGIT))
2813 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2814 "Illegal binary digit '%c' ignored", *s);
2815 break;
2816 }
9e24b6e2
JH		 2817 }
2818 if (!overflowed) {
2819 register UV xuv = ruv << 1;
2820
2821 if ((xuv >> 1) != ruv) {
2822 dTHR;
2823 overflowed = TRUE;
2824 rnv = (NV) ruv;
627300f0
JH		 2825 if (ckWARN_d(WARN_OVERFLOW))
2826 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH		 2827 "Integer overflow in binary number");
2828 } else
2829 ruv = xuv | (*s - '0');
2830 }
2831 if (overflowed) {
2832 rnv *= 2;
2833 /* If an NV has not enough bits in its mantissa to
2834 * represent an UV this summing of small low-order numbers
2835 * is a waste of time (because the NV cannot preserve
2836 * the low-order bits anyway): we could just remember when
2837 * did we overflow and in the end just multiply rnv by the
2cc4c2dc 2838 * right amount. */
9e24b6e2 2839 rnv += (*s - '0');
f248d071 2840 }
4f19785b 2841 }
9e24b6e2
JH		 2842 if (!overflowed)
2843 rnv = (NV) ruv;
893fe2c2
JH		 2844 if ( ( overflowed && rnv > 4294967295.0)
2845#if UV_SIZEOF > 4
2846 || (!overflowed && ruv > 0xffffffff )
2847#endif
2848 ) {
252aa082 2849 dTHR;
627300f0
JH		 2850 if (ckWARN(WARN_PORTABLE))
2851 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2852 "Binary number > 0b11111111111111111111111111111111 non-portable");
4f19785b
WSI		 2853 }
2854 *retlen = s - start;
9e24b6e2 2855 return rnv;
4f19785b 2856}
9e24b6e2
JH		 2857
2858NV
864dbfa3 2859Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 2860{
2861 register char *s = start;
9e24b6e2
JH		 2862 register NV rnv = 0.0;
2863 register UV ruv = 0;
2864 register bool overflowed = FALSE;
252aa082
JH		 2865
2866 for (; len-- && *s; s++) {
2867 if (!(*s >= '0' && *s <= '7')) {
2868 if (*s == '_')
9e24b6e2 2869 continue; /* Note: does not check for __ and the like. */
252aa082 2870 else {
f84f607d
JH		 2871 /* Allow \octal to work the DWIM way (that is, stop scanning
2872 * as soon as non-octal characters are seen, complain only iff
2873 * someone seems to want to use the digits eight and nine). */
252aa082
JH		 2874 if (*s == '8' || *s == '9') {
2875 dTHR;
627300f0
JH		 2876 if (ckWARN(WARN_DIGIT))
2877 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2878 "Illegal octal digit '%c' ignored", *s);
2879 }
2880 break;
2881 }
55497cff 2882 }
9e24b6e2 2883 if (!overflowed) {
893fe2c2 2884 register UV xuv = ruv << 3;
9e24b6e2
JH		 2885
2886 if ((xuv >> 3) != ruv) {
2887 dTHR;
2888 overflowed = TRUE;
2889 rnv = (NV) ruv;
627300f0
JH		 2890 if (ckWARN_d(WARN_OVERFLOW))
2891 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH		 2892 "Integer overflow in octal number");
2893 } else
2894 ruv = xuv | (*s - '0');
2895 }
2896 if (overflowed) {
2897 rnv *= 8.0;
2898 /* If an NV has not enough bits in its mantissa to
2899 * represent an UV this summing of small low-order numbers
2900 * is a waste of time (because the NV cannot preserve
2901 * the low-order bits anyway): we could just remember when
2902 * did we overflow and in the end just multiply rnv by the
2903 * right amount of 8-tuples. */
2904 rnv += (NV)(*s - '0');
2905 }
fe14fcc3 2906 }
9e24b6e2
JH		 2907 if (!overflowed)
2908 rnv = (NV) ruv;
893fe2c2
JH		 2909 if ( ( overflowed && rnv > 4294967295.0)
2910#if UV_SIZEOF > 4
2911 || (!overflowed && ruv > 0xffffffff )
2912#endif
2913 ) {
d008e5eb 2914 dTHR;
627300f0
JH		 2915 if (ckWARN(WARN_PORTABLE))
2916 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2917 "Octal number > 037777777777 non-portable");
d008e5eb 2918 }
fe14fcc3 2919 *retlen = s - start;
9e24b6e2 2920 return rnv;
fe14fcc3
LW		 2921}
2922
9e24b6e2 2923NV
864dbfa3 2924Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW		 2925{
2926 register char *s = start;
9e24b6e2
JH		 2927 register NV rnv = 0.0;
2928 register UV ruv = 0;
252aa082 2929 register bool seenx = FALSE;
9e24b6e2 2930 register bool overflowed = FALSE;
9e24b6e2 2931 char *hexdigit;
fe14fcc3 2932
9e24b6e2
JH		 2933 for (; len-- && *s; s++) {
2934 hexdigit = strchr((char *) PL_hexdigit, *s);
2935 if (!hexdigit) {
2936 if (*s == '_')
2937 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 2938 if (seenx == FALSE && *s == 'x' && ruv == 0) {
252aa082
JH		 2939 /* Disallow 0xxx0x0xxx... */
2940 seenx = TRUE;
252aa082
JH		 2941 continue;
2942 }
a0ed51b3 2943 else {
d008e5eb 2944 dTHR;
627300f0
JH		 2945 if (ckWARN(WARN_DIGIT))
2946 Perl_warner(aTHX_ WARN_DIGIT,
252aa082 2947 "Illegal hexadecimal digit '%c' ignored", *s);
a0ed51b3
LW		 2948 break;
2949 }
2950 }
9e24b6e2
JH		 2951 if (!overflowed) {
2952 register UV xuv = ruv << 4;
2953
2954 if ((xuv >> 4) != ruv) {
2955 dTHR;
2956 overflowed = TRUE;
2957 rnv = (NV) ruv;
627300f0
JH		 2958 if (ckWARN_d(WARN_OVERFLOW))
2959 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH		 2960 "Integer overflow in hexadecimal number");
2961 } else
2962 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
2963 }
2964 if (overflowed) {
2965 rnv *= 16.0;
2966 /* If an NV has not enough bits in its mantissa to
2967 * represent an UV this summing of small low-order numbers
2968 * is a waste of time (because the NV cannot preserve
2969 * the low-order bits anyway): we could just remember when
2970 * did we overflow and in the end just multiply rnv by the
2971 * right amount of 16-tuples. */
2972 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
2973 }
6ff81951 2974 }
9e24b6e2
JH		 2975 if (!overflowed)
2976 rnv = (NV) ruv;
893fe2c2
JH		 2977 if ( ( overflowed && rnv > 4294967295.0)
2978#if UV_SIZEOF > 4
2979 || (!overflowed && ruv > 0xffffffff )
2980#endif
2981 ) {
252aa082 2982 dTHR;
627300f0
JH		 2983 if (ckWARN(WARN_PORTABLE))
2984 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082
JH		 2985 "Hexadecimal number > 0xffffffff non-portable");
2986 }
fe14fcc3 2987 *retlen = s - start;
9e24b6e2 2988 return rnv;
fe14fcc3 2989}
760ac839 2990
491527d0 2991char*
864dbfa3 2992Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0
GS		 2993{
2994 dTHR;
2995 char *xfound = Nullch;
2996 char *xfailed = Nullch;
0f31cffe 2997 char tmpbuf[MAXPATHLEN];
491527d0
GS		 2998 register char *s;
2999 I32 len;
3000 int retval;
3001#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3002# define SEARCH_EXTS ".bat", ".cmd", NULL
3003# define MAX_EXT_LEN 4
3004#endif
3005#ifdef OS2
3006# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3007# define MAX_EXT_LEN 4
3008#endif
3009#ifdef VMS
3010# define SEARCH_EXTS ".pl", ".com", NULL
3011# define MAX_EXT_LEN 4
3012#endif
3013 /* additional extensions to try in each dir if scriptname not found */
3014#ifdef SEARCH_EXTS
3015 char *exts[] = { SEARCH_EXTS };
3016 char **ext = search_ext ? search_ext : exts;
3017 int extidx = 0, i = 0;
3018 char *curext = Nullch;
3019#else
3020# define MAX_EXT_LEN 0
3021#endif
3022
3023 /*
3024 * If dosearch is true and if scriptname does not contain path
3025 * delimiters, search the PATH for scriptname.
3026 *
3027 * If SEARCH_EXTS is also defined, will look for each
3028 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3029 * while searching the PATH.
3030 *
3031 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3032 * proceeds as follows:
3033 * If DOSISH or VMSISH:
3034 * + look for ./scriptname{,.foo,.bar}
3035 * + search the PATH for scriptname{,.foo,.bar}
3036 *
3037 * If !DOSISH:
3038 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3039 * this will not look in '.' if it's not in the PATH)
3040 */
84486fc6 3041 tmpbuf[0] = '\0';
491527d0
GS		 3042
3043#ifdef VMS
3044# ifdef ALWAYS_DEFTYPES
3045 len = strlen(scriptname);
3046 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3047 int hasdir, idx = 0, deftypes = 1;
3048 bool seen_dot = 1;
3049
3050 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3051# else
3052 if (dosearch) {
3053 int hasdir, idx = 0, deftypes = 1;
3054 bool seen_dot = 1;
3055
3056 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3057# endif
3058 /* The first time through, just add SEARCH_EXTS to whatever we
3059 * already have, so we can check for default file types. */
3060 while (deftypes ||
84486fc6 3061 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS		 3062 {
3063 if (deftypes) {
3064 deftypes = 0;
84486fc6 3065 *tmpbuf = '\0';
491527d0 3066 }
84486fc6
GS		 3067 if ((strlen(tmpbuf) + strlen(scriptname)
3068 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 3069 continue; /* don't search dir with too-long name */
84486fc6 3070 strcat(tmpbuf, scriptname);
491527d0
GS		 3071#else /* !VMS */
3072
3073#ifdef DOSISH
3074 if (strEQ(scriptname, "-"))
3075 dosearch = 0;
3076 if (dosearch) { /* Look in '.' first. */
3077 char *cur = scriptname;
3078#ifdef SEARCH_EXTS
3079 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3080 while (ext[i])
3081 if (strEQ(ext[i++],curext)) {
3082 extidx = -1; /* already has an ext */
3083 break;
3084 }
3085 do {
3086#endif
3087 DEBUG_p(PerlIO_printf(Perl_debug_log,
3088 "Looking for %s\n",cur));
017f25f1
IZ		 3089 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3090 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS		 3091 dosearch = 0;
3092 scriptname = cur;
3093#ifdef SEARCH_EXTS
3094 break;
3095#endif
3096 }
3097#ifdef SEARCH_EXTS
3098 if (cur == scriptname) {
3099 len = strlen(scriptname);
84486fc6 3100 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 3101 break;
84486fc6 3102 cur = strcpy(tmpbuf, scriptname);
491527d0
GS		 3103 }
3104 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 3105 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS		 3106#endif
3107 }
3108#endif
3109
3110 if (dosearch && !strchr(scriptname, '/')
3111#ifdef DOSISH
3112 && !strchr(scriptname, '\\')
3113#endif
3114 && (s = PerlEnv_getenv("PATH"))) {
3115 bool seen_dot = 0;
3116
3280af22
NIS		 3117 PL_bufend = s + strlen(s);
3118 while (s < PL_bufend) {
491527d0
GS		 3119#if defined(atarist) || defined(DOSISH)
3120 for (len = 0; *s
3121# ifdef atarist
3122 && *s != ','
3123# endif
3124 && *s != ';'; len++, s++) {
84486fc6
GS		 3125 if (len < sizeof tmpbuf)
3126 tmpbuf[len] = *s;
491527d0 3127 }
84486fc6
GS		 3128 if (len < sizeof tmpbuf)
3129 tmpbuf[len] = '\0';
491527d0 3130#else /* ! (atarist || DOSISH) */
3280af22 3131 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS		 3132 ':',
3133 &len);
3134#endif /* ! (atarist || DOSISH) */
3280af22 3135 if (s < PL_bufend)
491527d0 3136 s++;
84486fc6 3137 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0
GS		 3138 continue; /* don't search dir with too-long name */
3139 if (len
61ae2fbf 3140#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS		 3141 && tmpbuf[len - 1] != '/'
3142 && tmpbuf[len - 1] != '\\'
491527d0
GS		 3143#endif
3144 )
84486fc6
GS		 3145 tmpbuf[len++] = '/';
3146 if (len == 2 && tmpbuf[0] == '.')
491527d0 3147 seen_dot = 1;
84486fc6 3148 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS		 3149#endif /* !VMS */
3150
3151#ifdef SEARCH_EXTS
84486fc6 3152 len = strlen(tmpbuf);
491527d0
GS		 3153 if (extidx > 0) /* reset after previous loop */
3154 extidx = 0;
3155 do {
3156#endif
84486fc6 3157 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3158 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ		 3159 if (S_ISDIR(PL_statbuf.st_mode)) {
3160 retval = -1;
3161 }
491527d0
GS		 3162#ifdef SEARCH_EXTS
3163 } while ( retval < 0 /* not there */
3164 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3165 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS		 3166 );
3167#endif
3168 if (retval < 0)
3169 continue;
3280af22
NIS		 3170 if (S_ISREG(PL_statbuf.st_mode)
3171 && cando(S_IRUSR,TRUE,&PL_statbuf)
491527d0 3172#ifndef DOSISH
3280af22 3173 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS		 3174#endif
3175 )
3176 {
84486fc6 3177 xfound = tmpbuf; /* bingo! */
491527d0
GS		 3178 break;
3179 }
3180 if (!xfailed)
84486fc6 3181 xfailed = savepv(tmpbuf);
491527d0
GS		 3182 }
3183#ifndef DOSISH
017f25f1
IZ		 3184 if (!xfound && !seen_dot && !xfailed &&
3185 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3186 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS		 3187#endif
3188 seen_dot = 1; /* Disable message. */
9ccb31f9
GS		 3189 if (!xfound) {
3190 if (flags & 1) { /* do or die? */
cea2e8a9 3191 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS		 3192 (xfailed ? "execute" : "find"),
3193 (xfailed ? xfailed : scriptname),
3194 (xfailed ? "" : " on PATH"),
3195 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3196 }
3197 scriptname = Nullch;
3198 }
491527d0
GS		 3199 if (xfailed)
3200 Safefree(xfailed);
3201 scriptname = xfound;
3202 }
9ccb31f9 3203 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS		 3204}
3205
3206
11343788 3207#ifdef USE_THREADS
12ca11f6
MB		 3208#ifdef FAKE_THREADS
3209/* Very simplistic scheduler for now */
3210void
3211schedule(void)
3212{
c7848ba1 3213 thr = thr->i.next_run;
12ca11f6
MB		 3214}
3215
3216void
864dbfa3 3217Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB		 3218{
3219 *cp = 0;
3220}
3221
3222void
864dbfa3 3223Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3224{
51dd5992 3225 perl_os_thread t;
12ca11f6
MB		 3226 perl_cond cond = *cp;
3227
3228 if (!cond)
3229 return;
3230 t = cond->thread;
3231 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3232 t->i.next_run = thr->i.next_run;
3233 thr->i.next_run->i.prev_run = t;
3234 t->i.prev_run = thr;
3235 thr->i.next_run = t;
3236 thr->i.wait_queue = 0;
12ca11f6
MB		 3237 /* Remove from the wait queue */
3238 *cp = cond->next;
3239 Safefree(cond);
3240}
3241
3242void
864dbfa3 3243Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3244{
51dd5992 3245 perl_os_thread t;
12ca11f6
MB		 3246 perl_cond cond, cond_next;
3247
3248 for (cond = *cp; cond; cond = cond_next) {
3249 t = cond->thread;
3250 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3251 t->i.next_run = thr->i.next_run;
3252 thr->i.next_run->i.prev_run = t;
3253 t->i.prev_run = thr;
3254 thr->i.next_run = t;
3255 thr->i.wait_queue = 0;
12ca11f6
MB		 3256 /* Remove from the wait queue */
3257 cond_next = cond->next;
3258 Safefree(cond);
3259 }
3260 *cp = 0;
3261}
3262
3263void
864dbfa3 3264Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB		 3265{
3266 perl_cond cond;
3267
c7848ba1 3268 if (thr->i.next_run == thr)
cea2e8a9 3269 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
12ca11f6 3270
0f15f207 3271 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB		 3272 cond->thread = thr;
3273 cond->next = *cp;
3274 *cp = cond;
c7848ba1 3275 thr->i.wait_queue = cond;
12ca11f6 3276 /* Remove ourselves from runnable queue */
c7848ba1
MB		 3277 thr->i.next_run->i.prev_run = thr->i.prev_run;
3278 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB		 3279}
3280#endif /* FAKE_THREADS */
3281
0d85d877 3282#ifdef PTHREAD_GETSPECIFIC_INT
52e1cb5e 3283struct perl_thread *
864dbfa3 3284Perl_getTHR(pTHX)
11343788
MB		 3285{
3286 pthread_addr_t t;
3287
6b88bc9c 3288 if (pthread_getspecific(PL_thr_key, &t))
cea2e8a9 3289 Perl_croak(aTHX_ "panic: pthread_getspecific");
52e1cb5e 3290 return (struct perl_thread *) t;
11343788 3291}
0d85d877 3292#endif
f93b4edd
MB		 3293
3294MAGIC *
864dbfa3 3295Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB		 3296{
3297 MAGIC *mg;
3298
3299 SvUPGRADE(sv, SVt_PVMG);
3300 mg = mg_find(sv, 'm');
3301 if (!mg) {
3302 condpair_t *cp;
3303
3304 New(53, cp, 1, condpair_t);
3305 MUTEX_INIT(&cp->mutex);
3306 COND_INIT(&cp->owner_cond);
3307 COND_INIT(&cp->cond);
3308 cp->owner = 0;
28a8573f 3309 MUTEX_LOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB		 3310 mg = mg_find(sv, 'm');
3311 if (mg) {
3312 /* someone else beat us to initialising it */
28a8573f 3313 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB		 3314 MUTEX_DESTROY(&cp->mutex);
3315 COND_DESTROY(&cp->owner_cond);
3316 COND_DESTROY(&cp->cond);
3317 Safefree(cp);
3318 }
3319 else {
3320 sv_magic(sv, Nullsv, 'm', 0, 0);
3321 mg = SvMAGIC(sv);
3322 mg->mg_ptr = (char *)cp;
565764a8 3323 mg->mg_len = sizeof(cp);
28a8573f 3324 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
8b73bbec 3325 DEBUG_S(WITH_THR(PerlIO_printf(PerlIO_stderr(),
c7848ba1 3326 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB		 3327 }
3328 }
3329 return mg;
3330}
a863c7d1
MB		 3331
3332/*
199100c8
MB		 3333 * Make a new perl thread structure using t as a prototype. Some of the
3334 * fields for the new thread are copied from the prototype thread, t,
3335 * so t should not be running in perl at the time this function is
3336 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3337 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3338 */
52e1cb5e 3339struct perl_thread *
864dbfa3 3340Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3341{
c5be433b 3342#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3343 struct perl_thread *thr;
cea2e8a9 3344#endif
a863c7d1 3345 SV *sv;
199100c8
MB		 3346 SV **svp;
3347 I32 i;
3348
79cb57f6 3349 sv = newSVpvn("", 0);
52e1cb5e
JH		 3350 SvGROW(sv, sizeof(struct perl_thread) + 1);
3351 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3352 thr = (Thread) SvPVX(sv);
949ced2d 3353#ifdef DEBUGGING
52e1cb5e 3354 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS		 3355 PL_markstack = 0;
3356 PL_scopestack = 0;
3357 PL_savestack = 0;
3358 PL_retstack = 0;
3359 PL_dirty = 0;
3360 PL_localizing = 0;
949ced2d
GS		 3361 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3362#else
3363 Zero(thr, 1, struct perl_thread);
3364#endif
199100c8 3365
0b94c7bb 3366 PL_protect = MEMBER_TO_FPTR(Perl_default_protect);
312caa8e 3367
199100c8 3368 thr->oursv = sv;
cea2e8a9 3369 init_stacks();
a863c7d1 3370
533c011a 3371 PL_curcop = &PL_compiling;
c5be433b 3372 thr->interp = t->interp;
199100c8 3373 thr->cvcache = newHV();
54b9620d 3374 thr->threadsv = newAV();
a863c7d1 3375 thr->specific = newAV();
79cb57f6 3376 thr->errsv = newSVpvn("", 0);
38a03e6e 3377 thr->errhv = newHV();
a863c7d1
MB		 3378 thr->flags = THRf_R_JOINABLE;
3379 MUTEX_INIT(&thr->mutex);
199100c8 3380
d55594ae
GS		 3381 /* top_env needs to be non-zero. It points to an area
3382 in which longjmp() stuff is stored, as C callstack
3383 info there at least is thread specific this has to
3384 be per-thread. Otherwise a 'die' in a thread gives
3385 that thread the C stack of last thread to do an eval {}!
3386 See comments in scope.h
3387 Initialize top entry (as in perl.c for main thread)
3388 */
533c011a
NIS		 3389 PL_start_env.je_prev = NULL;
3390 PL_start_env.je_ret = -1;
3391 PL_start_env.je_mustcatch = TRUE;
3392 PL_top_env = &PL_start_env;
3393
faef0170 3394 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
533c011a
NIS		 3395 PL_restartop = 0;
3396
b099ddc0
GS		 3397 PL_statname = NEWSV(66,0);
3398 PL_maxscream = -1;
0b94c7bb
GS		 3399 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3400 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3401 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3402 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3403 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
b099ddc0
GS		 3404 PL_regindent = 0;
3405 PL_reginterp_cnt = 0;
3406 PL_lastscream = Nullsv;
3407 PL_screamfirst = 0;
3408 PL_screamnext = 0;
3409 PL_reg_start_tmp = 0;
3410 PL_reg_start_tmpl = 0;
14ed4b74 3411 PL_reg_poscache = Nullch;
b099ddc0
GS		 3412
3413 /* parent thread's data needs to be locked while we make copy */
3414 MUTEX_LOCK(&t->mutex);
3415
312caa8e
CS		 3416 PL_protect = t->Tprotect;
3417
b099ddc0
GS		 3418 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3419 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3420 PL_curstash = t->Tcurstash; /* always be set to main? */
3421
6b88bc9c 3422 PL_tainted = t->Ttainted;
84fee439
NIS		 3423 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3424 PL_nrs = newSVsv(t->Tnrs);
3425 PL_rs = SvREFCNT_inc(PL_nrs);
3426 PL_last_in_gv = Nullgv;
3427 PL_ofslen = t->Tofslen;
3428 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3429 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3430 PL_chopset = t->Tchopset;
3431 PL_formtarget = newSVsv(t->Tformtarget);
3432 PL_bodytarget = newSVsv(t->Tbodytarget);
3433 PL_toptarget = newSVsv(t->Ttoptarget);
533c011a 3434
54b9620d
MB		 3435 /* Initialise all per-thread SVs that the template thread used */
3436 svp = AvARRAY(t->threadsv);
93965878 3437 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 3438 if (*svp && *svp != &PL_sv_undef) {
199100c8 3439 SV *sv = newSVsv(*svp);
54b9620d 3440 av_store(thr->threadsv, i, sv);
533c011a 3441 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
8b73bbec 3442 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
54b9620d 3443 "new_struct_thread: copied threadsv %d %p->%p\n",i, t, thr));
199100c8
MB		 3444 }
3445 }
940cb80d 3446 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 3447
533c011a
NIS		 3448 MUTEX_LOCK(&PL_threads_mutex);
3449 PL_nthreads++;
3450 thr->tid = ++PL_threadnum;
199100c8
MB		 3451 thr->next = t->next;
3452 thr->prev = t;
3453 t->next = thr;
3454 thr->next->prev = thr;
533c011a 3455 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 3456
b099ddc0
GS		 3457 /* done copying parent's state */
3458 MUTEX_UNLOCK(&t->mutex);
3459
a863c7d1 3460#ifdef HAVE_THREAD_INTERN
4f63d024 3461 Perl_init_thread_intern(thr);
a863c7d1 3462#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB		 3463 return thr;
3464}
11343788 3465#endif /* USE_THREADS */
760ac839
LW		 3466
3467#ifdef HUGE_VAL
3468/*
3469 * This hack is to force load of "huge" support from libm.a
3470 * So it is in perl for (say) POSIX to use.
3471 * Needed for SunOS with Sun's 'acc' for example.
3472 */
65202027 3473NV
8ac85365 3474Perl_huge(void)
760ac839
LW		 3475{
3476 return HUGE_VAL;
3477}
3478#endif
4e35701f 3479
22239a37
NIS		 3480#ifdef PERL_GLOBAL_STRUCT
3481struct perl_vars *
864dbfa3 3482Perl_GetVars(pTHX)
22239a37 3483{
533c011a 3484 return &PL_Vars;
22239a37 3485}
31fb1209
NIS		 3486#endif
3487
3488char **
864dbfa3 3489Perl_get_op_names(pTHX)
31fb1209 3490{
22c35a8c 3491 return PL_op_name;
31fb1209
NIS		 3492}
3493
3494char **
864dbfa3 3495Perl_get_op_descs(pTHX)
31fb1209 3496{
22c35a8c 3497 return PL_op_desc;
31fb1209 3498}
9e6b2b00
GS		 3499
3500char *
864dbfa3 3501Perl_get_no_modify(pTHX)
9e6b2b00 3502{
22c35a8c 3503 return (char*)PL_no_modify;
9e6b2b00
GS		 3504}
3505
3506U32 *
864dbfa3 3507Perl_get_opargs(pTHX)
9e6b2b00 3508{
22c35a8c 3509 return PL_opargs;
9e6b2b00 3510}
51aa15f3 3511
0cb96387
GS		 3512PPADDR_t*
3513Perl_get_ppaddr(pTHX)
3514{
3515 return &PL_ppaddr;
3516}
3517
a6c40364
GS		 3518#ifndef HAS_GETENV_LEN
3519char *
864dbfa3 3520Perl_getenv_len(pTHX_ char *env_elem, unsigned long *len)
a6c40364
GS		 3521{
3522 char *env_trans = PerlEnv_getenv(env_elem);
3523 if (env_trans)
3524 *len = strlen(env_trans);
3525 return env_trans;
f675dbe5
CB		 3526}
3527#endif
3528
dc9e4912
GS		 3529
3530MGVTBL*
864dbfa3 3531Perl_get_vtbl(pTHX_ int vtbl_id)
dc9e4912
GS		 3532{
3533 MGVTBL* result = Null(MGVTBL*);
3534
3535 switch(vtbl_id) {
3536 case want_vtbl_sv:
3537 result = &PL_vtbl_sv;
3538 break;
3539 case want_vtbl_env:
3540 result = &PL_vtbl_env;
3541 break;
3542 case want_vtbl_envelem:
3543 result = &PL_vtbl_envelem;
3544 break;
3545 case want_vtbl_sig:
3546 result = &PL_vtbl_sig;
3547 break;
3548 case want_vtbl_sigelem:
3549 result = &PL_vtbl_sigelem;
3550 break;
3551 case want_vtbl_pack:
3552 result = &PL_vtbl_pack;
3553 break;
3554 case want_vtbl_packelem:
3555 result = &PL_vtbl_packelem;
3556 break;
3557 case want_vtbl_dbline:
3558 result = &PL_vtbl_dbline;
3559 break;
3560 case want_vtbl_isa:
3561 result = &PL_vtbl_isa;
3562 break;
3563 case want_vtbl_isaelem:
3564 result = &PL_vtbl_isaelem;
3565 break;
3566 case want_vtbl_arylen:
3567 result = &PL_vtbl_arylen;
3568 break;
3569 case want_vtbl_glob:
3570 result = &PL_vtbl_glob;
3571 break;
3572 case want_vtbl_mglob:
3573 result = &PL_vtbl_mglob;
3574 break;
3575 case want_vtbl_nkeys:
3576 result = &PL_vtbl_nkeys;
3577 break;
3578 case want_vtbl_taint:
3579 result = &PL_vtbl_taint;
3580 break;
3581 case want_vtbl_substr:
3582 result = &PL_vtbl_substr;
3583 break;
3584 case want_vtbl_vec:
3585 result = &PL_vtbl_vec;
3586 break;
3587 case want_vtbl_pos:
3588 result = &PL_vtbl_pos;
3589 break;
3590 case want_vtbl_bm:
3591 result = &PL_vtbl_bm;
3592 break;
3593 case want_vtbl_fm:
3594 result = &PL_vtbl_fm;
3595 break;
3596 case want_vtbl_uvar:
3597 result = &PL_vtbl_uvar;
3598 break;
3599#ifdef USE_THREADS
3600 case want_vtbl_mutex:
3601 result = &PL_vtbl_mutex;
3602 break;
3603#endif
3604 case want_vtbl_defelem:
3605 result = &PL_vtbl_defelem;
3606 break;
3607 case want_vtbl_regexp:
3608 result = &PL_vtbl_regexp;
3609 break;
3610 case want_vtbl_regdata:
3611 result = &PL_vtbl_regdata;
3612 break;
3613 case want_vtbl_regdatum:
3614 result = &PL_vtbl_regdatum;
3615 break;
3c90161d 3616#ifdef USE_LOCALE_COLLATE
dc9e4912
GS		 3617 case want_vtbl_collxfrm:
3618 result = &PL_vtbl_collxfrm;
3619 break;
3c90161d 3620#endif
dc9e4912
GS		 3621 case want_vtbl_amagic:
3622 result = &PL_vtbl_amagic;
3623 break;
3624 case want_vtbl_amagicelem:
3625 result = &PL_vtbl_amagicelem;
3626 break;
810b8aa5
GS		 3627 case want_vtbl_backref:
3628 result = &PL_vtbl_backref;
3629 break;
dc9e4912
GS		 3630 }
3631 return result;
3632}
3633
767df6a1 3634I32
864dbfa3 3635Perl_my_fflush_all(pTHX)
767df6a1
JH		 3636{
3637#ifdef FFLUSH_NULL
ce720889 3638 return PerlIO_flush(NULL);
767df6a1
JH		 3639#else
3640 long open_max = -1;
ed39a0f2 3641# if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
d2201af2
AD		 3642# ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3643 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3644# else
767df6a1
JH		 3645# if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3646 open_max = sysconf(_SC_OPEN_MAX);
3647# else
3648# ifdef FOPEN_MAX
d2201af2 3649 open_max = FOPEN_MAX;
767df6a1
JH		 3650# else
3651# ifdef OPEN_MAX
d2201af2 3652 open_max = OPEN_MAX;
767df6a1
JH		 3653# else
3654# ifdef _NFILE
d2201af2 3655 open_max = _NFILE;
767df6a1
JH		 3656# endif
3657# endif
3658# endif
3659# endif
d2201af2 3660# endif
767df6a1
JH		 3661 if (open_max > 0) {
3662 long i;
3663 for (i = 0; i < open_max; i++)
d2201af2
AD		 3664 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3665 STDIO_STREAM_ARRAY[i]._file < open_max &&
3666 STDIO_STREAM_ARRAY[i]._flag)
3667 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
767df6a1
JH		 3668 return 0;
3669 }
3670# endif
3671 SETERRNO(EBADF,RMS$_IFI);
3672 return EOF;
3673#endif
3674}
097ee67d 3675
65202027 3676NV
5b877257 3677Perl_my_atof(pTHX_ const char* s) {
097ee67d 3678#ifdef USE_LOCALE_NUMERIC
d43ce814 3679 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
65202027 3680 NV x, y;
097ee67d 3681
65202027 3682 x = Perl_atof(s);
097ee67d 3683 SET_NUMERIC_STANDARD();
65202027 3684 y = Perl_atof(s);
097ee67d
JH		 3685 SET_NUMERIC_LOCAL();
3686 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3687 return y;
3688 return x;
65202027
DS		 3689 }
3690 else
3691 return Perl_atof(s);
097ee67d 3692#else
65202027 3693 return Perl_atof(s);
097ee67d
JH		 3694#endif
3695}
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