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add patch that generates regnodes.h via regcomp.pl
[perl5.git] / util.c
CommitLineData
a0d0e21e 1/* util.c
a687059c 2 *
9607fc9c 3 * Copyright (c) 1991-1997, 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"
8d063cd8 16#include "perl.h"
62b28dd9 17
6eb13c3b 18#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
a687059c 19#include <signal.h>
62b28dd9 20#endif
a687059c 21
36477c24
PP
22#ifndef SIG_ERR
23# define SIG_ERR ((Sighandler_t) -1)
24#endif
25
bd4080b3 26/* XXX If this causes problems, set i_unistd=undef in the hint file. */
85e6fe83 27#ifdef I_UNISTD
8990e307
LW
28# include <unistd.h>
29#endif
30
a687059c
LW
31#ifdef I_VFORK
32# include <vfork.h>
33#endif
34
94b6baf5
AD
35/* Put this after #includes because fork and vfork prototypes may
36 conflict.
37*/
38#ifndef HAS_VFORK
39# define vfork fork
40#endif
41
fe14fcc3
LW
42#ifdef I_FCNTL
43# include <fcntl.h>
44#endif
45#ifdef I_SYS_FILE
46# include <sys/file.h>
47#endif
48
ff68c719
PP
49#ifdef I_SYS_WAIT
50# include <sys/wait.h>
51#endif
52
8d063cd8 53#define FLUSH
8d063cd8 54
a0d0e21e 55#ifdef LEAKTEST
a0d0e21e 56
8c52afec
IZ
57static void xstat _((int));
58long xcount[MAXXCOUNT];
59long lastxcount[MAXXCOUNT];
60long xycount[MAXXCOUNT][MAXYCOUNT];
61long lastxycount[MAXXCOUNT][MAXYCOUNT];
62
a0d0e21e 63#endif
a863c7d1 64
55497cff 65#ifndef MYMALLOC
de3bb511 66
8d063cd8
LW
67/* paranoid version of malloc */
68
a687059c
LW
69/* NOTE: Do not call the next three routines directly. Use the macros
70 * in handy.h, so that we can easily redefine everything to do tracking of
71 * allocated hunks back to the original New to track down any memory leaks.
20cec16a 72 * XXX This advice seems to be widely ignored :-( --AD August 1996.
a687059c
LW
73 */
74
bd4080b3 75Malloc_t
f0f333f4 76safemalloc(MEM_SIZE size)
8d063cd8 77{
bd4080b3 78 Malloc_t ptr;
55497cff 79#ifdef HAS_64K_LIMIT
62b28dd9 80 if (size > 0xffff) {
760ac839 81 PerlIO_printf(PerlIO_stderr(), "Allocation too large: %lx\n", size) FLUSH;
79072805 82 my_exit(1);
62b28dd9 83 }
55497cff 84#endif /* HAS_64K_LIMIT */
34de22dd
LW
85#ifdef DEBUGGING
86 if ((long)size < 0)
463ee0b2 87 croak("panic: malloc");
34de22dd 88#endif
6ad3d225 89 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
79072805 90#if !(defined(I286) || defined(atarist))
760ac839 91 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) malloc %ld bytes\n",ptr,an++,(long)size));
79072805 92#else
760ac839 93 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) malloc %ld bytes\n",ptr,an++,(long)size));
8d063cd8
LW
94#endif
95 if (ptr != Nullch)
96 return ptr;
7c0587c8
LW
97 else if (nomemok)
98 return Nullch;
8d063cd8 99 else {
760ac839 100 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
79072805 101 my_exit(1);
4e35701f 102 return Nullch;
8d063cd8
LW
103 }
104 /*NOTREACHED*/
105}
106
107/* paranoid version of realloc */
108
bd4080b3 109Malloc_t
f0f333f4 110saferealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 111{
bd4080b3 112 Malloc_t ptr;
ecfc5424 113#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
6ad3d225 114 Malloc_t PerlMem_realloc();
ecfc5424 115#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 116
55497cff 117#ifdef HAS_64K_LIMIT
5f05dabc
PP
118 if (size > 0xffff) {
119 PerlIO_printf(PerlIO_stderr(),
120 "Reallocation too large: %lx\n", size) FLUSH;
121 my_exit(1);
122 }
55497cff 123#endif /* HAS_64K_LIMIT */
7614df0c
JD
124 if (!size) {
125 safefree(where);
126 return NULL;
127 }
128
378cc40b 129 if (!where)
7614df0c 130 return safemalloc(size);
34de22dd
LW
131#ifdef DEBUGGING
132 if ((long)size < 0)
463ee0b2 133 croak("panic: realloc");
34de22dd 134#endif
7614df0c 135 ptr = PerlMem_realloc(where,size);
79072805
LW
136
137#if !(defined(I286) || defined(atarist))
138 DEBUG_m( {
760ac839
LW
139 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) rfree\n",where,an++);
140 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) realloc %ld bytes\n",ptr,an++,(long)size);
79072805
LW
141 } )
142#else
143 DEBUG_m( {
760ac839
LW
144 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) rfree\n",where,an++);
145 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) realloc %ld bytes\n",ptr,an++,(long)size);
79072805 146 } )
8d063cd8 147#endif
79072805 148
8d063cd8
LW
149 if (ptr != Nullch)
150 return ptr;
7c0587c8
LW
151 else if (nomemok)
152 return Nullch;
8d063cd8 153 else {
760ac839 154 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
79072805 155 my_exit(1);
4e35701f 156 return Nullch;
8d063cd8
LW
157 }
158 /*NOTREACHED*/
159}
160
161/* safe version of free */
162
54310121 163Free_t
f0f333f4 164safefree(Malloc_t where)
8d063cd8 165{
79072805 166#if !(defined(I286) || defined(atarist))
f0f333f4 167 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%x: (%05d) free\n",(char *) where,an++));
79072805 168#else
f0f333f4 169 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) free\n",(char *) where,an++));
8d063cd8 170#endif
378cc40b 171 if (where) {
de3bb511 172 /*SUPPRESS 701*/
6ad3d225 173 PerlMem_free(where);
378cc40b 174 }
8d063cd8
LW
175}
176
1050c9ca
PP
177/* safe version of calloc */
178
bd4080b3 179Malloc_t
f0f333f4 180safecalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 181{
bd4080b3 182 Malloc_t ptr;
1050c9ca 183
55497cff 184#ifdef HAS_64K_LIMIT
5f05dabc
PP
185 if (size * count > 0xffff) {
186 PerlIO_printf(PerlIO_stderr(),
187 "Allocation too large: %lx\n", size * count) FLUSH;
188 my_exit(1);
189 }
55497cff 190#endif /* HAS_64K_LIMIT */
1050c9ca
PP
191#ifdef DEBUGGING
192 if ((long)size < 0 || (long)count < 0)
193 croak("panic: calloc");
194#endif
0b7c1c42 195 size *= count;
6ad3d225 196 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
1050c9ca 197#if !(defined(I286) || defined(atarist))
fb73857a 198 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
1050c9ca 199#else
fb73857a 200 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
1050c9ca 201#endif
1050c9ca
PP
202 if (ptr != Nullch) {
203 memset((void*)ptr, 0, size);
204 return ptr;
205 }
206 else if (nomemok)
207 return Nullch;
208 else {
760ac839 209 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
1050c9ca 210 my_exit(1);
4e35701f 211 return Nullch;
1050c9ca
PP
212 }
213 /*NOTREACHED*/
214}
215
55497cff 216#endif /* !MYMALLOC */
de3bb511 217
a687059c
LW
218#ifdef LEAKTEST
219
8c52afec
IZ
220struct mem_test_strut {
221 union {
222 long type;
223 char c[2];
224 } u;
225 long size;
226};
227
228# define ALIGN sizeof(struct mem_test_strut)
229
230# define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
231# define typeof_chunk(ch) \
232 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
233# define set_typeof_chunk(ch,t) \
234 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
235#define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
236 ? MAXYCOUNT - 1 \
237 : ( (size) > 40 \
238 ? ((size) - 1)/8 + 5 \
239 : ((size) - 1)/4))
8d063cd8 240
bd4080b3 241Malloc_t
f0f333f4 242safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 243{
8c52afec 244 register char* where = (char*)safemalloc(size + ALIGN);
8d063cd8 245
8c52afec
IZ
246 xcount[x] += size;
247 xycount[x][SIZE_TO_Y(size)]++;
248 set_typeof_chunk(where, x);
249 sizeof_chunk(where) = size;
250 return (Malloc_t)(where + ALIGN);
8d063cd8 251}
8d063cd8 252
bd4080b3 253Malloc_t
8c52afec 254safexrealloc(Malloc_t wh, MEM_SIZE size)
a687059c 255{
8c52afec
IZ
256 char *where = (char*)wh;
257
258 if (!wh)
259 return safexmalloc(0,size);
260
261 {
262 MEM_SIZE old = sizeof_chunk(where - ALIGN);
263 int t = typeof_chunk(where - ALIGN);
264 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
265
266 xycount[t][SIZE_TO_Y(old)]--;
267 xycount[t][SIZE_TO_Y(size)]++;
268 xcount[t] += size - old;
269 sizeof_chunk(new) = size;
270 return (Malloc_t)(new + ALIGN);
271 }
a687059c
LW
272}
273
274void
8c52afec 275safexfree(Malloc_t wh)
a687059c 276{
79072805 277 I32 x;
8c52afec
IZ
278 char *where = (char*)wh;
279 MEM_SIZE size;
280
a687059c
LW
281 if (!where)
282 return;
283 where -= ALIGN;
8c52afec 284 size = sizeof_chunk(where);
a687059c 285 x = where[0] + 100 * where[1];
8c52afec
IZ
286 xcount[x] -= size;
287 xycount[x][SIZE_TO_Y(size)]--;
a687059c
LW
288 safefree(where);
289}
290
bd4080b3 291Malloc_t
f0f333f4 292safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 293{
8c52afec
IZ
294 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
295 xcount[x] += size;
296 xycount[x][SIZE_TO_Y(size)]++;
297 memset((void*)(where + ALIGN), 0, size * count);
298 set_typeof_chunk(where, x);
299 sizeof_chunk(where) = size;
300 return (Malloc_t)(where + ALIGN);
1050c9ca
PP
301}
302
7c0587c8 303static void
8c52afec 304xstat(int flag)
8d063cd8 305{
8c52afec
IZ
306 register I32 i, j, total = 0;
307 I32 subtot[MAXYCOUNT];
8d063cd8 308
8c52afec
IZ
309 for (j = 0; j < MAXYCOUNT; j++) {
310 subtot[j] = 0;
311 }
312
313 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 314 for (i = 0; i < MAXXCOUNT; i++) {
8c52afec
IZ
315 total += xcount[i];
316 for (j = 0; j < MAXYCOUNT; j++) {
317 subtot[j] += xycount[i][j];
318 }
319 if (flag == 0
320 ? xcount[i] /* Have something */
321 : (flag == 2
322 ? xcount[i] != lastxcount[i] /* Changed */
323 : xcount[i] > lastxcount[i])) { /* Growed */
324 PerlIO_printf(PerlIO_stderr(),"%2d %02d %7ld ", i / 100, i % 100,
325 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
a687059c 326 lastxcount[i] = xcount[i];
8c52afec
IZ
327 for (j = 0; j < MAXYCOUNT; j++) {
328 if ( flag == 0
329 ? xycount[i][j] /* Have something */
330 : (flag == 2
331 ? xycount[i][j] != lastxycount[i][j] /* Changed */
332 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
333 PerlIO_printf(PerlIO_stderr(),"%3ld ",
334 flag == 2
335 ? xycount[i][j] - lastxycount[i][j]
336 : xycount[i][j]);
337 lastxycount[i][j] = xycount[i][j];
338 } else {
339 PerlIO_printf(PerlIO_stderr(), " . ", xycount[i][j]);
340 }
341 }
342 PerlIO_printf(PerlIO_stderr(), "\n");
343 }
344 }
345 if (flag != 2) {
346 PerlIO_printf(PerlIO_stderr(), "Total %7ld ", total);
347 for (j = 0; j < MAXYCOUNT; j++) {
348 if (subtot[j]) {
349 PerlIO_printf(PerlIO_stderr(), "%3ld ", subtot[j]);
350 } else {
351 PerlIO_printf(PerlIO_stderr(), " . ");
352 }
8d063cd8 353 }
8c52afec 354 PerlIO_printf(PerlIO_stderr(), "\n");
8d063cd8 355 }
8d063cd8 356}
a687059c
LW
357
358#endif /* LEAKTEST */
8d063cd8
LW
359
360/* copy a string up to some (non-backslashed) delimiter, if any */
361
362char *
8ac85365 363delimcpy(register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 364{
fc36a67e
PP
365 register I32 tolen;
366 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW
367 if (*from == '\\') {
368 if (from[1] == delim)
369 from++;
fc36a67e
PP
370 else {
371 if (to < toend)
372 *to++ = *from;
373 tolen++;
374 from++;
375 }
378cc40b 376 }
bedebaa5 377 else if (*from == delim)
8d063cd8 378 break;
fc36a67e
PP
379 if (to < toend)
380 *to++ = *from;
8d063cd8 381 }
bedebaa5
CS
382 if (to < toend)
383 *to = '\0';
fc36a67e 384 *retlen = tolen;
8d063cd8
LW
385 return from;
386}
387
388/* return ptr to little string in big string, NULL if not found */
378cc40b 389/* This routine was donated by Corey Satten. */
8d063cd8
LW
390
391char *
8ac85365 392instr(register char *big, register char *little)
378cc40b
LW
393{
394 register char *s, *x;
79072805 395 register I32 first;
378cc40b 396
a687059c
LW
397 if (!little)
398 return big;
399 first = *little++;
378cc40b
LW
400 if (!first)
401 return big;
402 while (*big) {
403 if (*big++ != first)
404 continue;
405 for (x=big,s=little; *s; /**/ ) {
406 if (!*x)
407 return Nullch;
408 if (*s++ != *x++) {
409 s--;
410 break;
411 }
412 }
413 if (!*s)
414 return big-1;
415 }
416 return Nullch;
417}
8d063cd8 418
a687059c
LW
419/* same as instr but allow embedded nulls */
420
421char *
8ac85365 422ninstr(register char *big, register char *bigend, char *little, char *lend)
8d063cd8 423{
a687059c 424 register char *s, *x;
79072805 425 register I32 first = *little;
a687059c 426 register char *littleend = lend;
378cc40b 427
a0d0e21e 428 if (!first && little >= littleend)
a687059c 429 return big;
de3bb511
LW
430 if (bigend - big < littleend - little)
431 return Nullch;
a687059c
LW
432 bigend -= littleend - little++;
433 while (big <= bigend) {
434 if (*big++ != first)
435 continue;
436 for (x=big,s=little; s < littleend; /**/ ) {
437 if (*s++ != *x++) {
438 s--;
439 break;
440 }
441 }
442 if (s >= littleend)
443 return big-1;
378cc40b 444 }
a687059c
LW
445 return Nullch;
446}
447
448/* reverse of the above--find last substring */
449
450char *
8ac85365 451rninstr(register char *big, char *bigend, char *little, char *lend)
a687059c
LW
452{
453 register char *bigbeg;
454 register char *s, *x;
79072805 455 register I32 first = *little;
a687059c
LW
456 register char *littleend = lend;
457
a0d0e21e 458 if (!first && little >= littleend)
a687059c
LW
459 return bigend;
460 bigbeg = big;
461 big = bigend - (littleend - little++);
462 while (big >= bigbeg) {
463 if (*big-- != first)
464 continue;
465 for (x=big+2,s=little; s < littleend; /**/ ) {
466 if (*s++ != *x++) {
467 s--;
468 break;
469 }
470 }
471 if (s >= littleend)
472 return big+1;
378cc40b 473 }
a687059c 474 return Nullch;
378cc40b 475}
a687059c 476
bbce6d69
PP
477/*
478 * Set up for a new ctype locale.
479 */
55497cff 480void
8ac85365 481perl_new_ctype(char *newctype)
ef7eada9 482{
36477c24
PP
483#ifdef USE_LOCALE_CTYPE
484
bbce6d69 485 int i;
ef7eada9 486
bbce6d69
PP
487 for (i = 0; i < 256; i++) {
488 if (isUPPER_LC(i))
489 fold_locale[i] = toLOWER_LC(i);
490 else if (isLOWER_LC(i))
491 fold_locale[i] = toUPPER_LC(i);
492 else
493 fold_locale[i] = i;
494 }
bbce6d69 495
36477c24
PP
496#endif /* USE_LOCALE_CTYPE */
497}
bbce6d69
PP
498
499/*
500 * Set up for a new collation locale.
501 */
502void
8ac85365 503perl_new_collate(char *newcoll)
bbce6d69 504{
36477c24
PP
505#ifdef USE_LOCALE_COLLATE
506
bbce6d69
PP
507 if (! newcoll) {
508 if (collation_name) {
509 ++collation_ix;
510 Safefree(collation_name);
511 collation_name = NULL;
512 collation_standard = TRUE;
bbce6d69
PP
513 collxfrm_base = 0;
514 collxfrm_mult = 2;
bbce6d69
PP
515 }
516 return;
517 }
518
519 if (! collation_name || strNE(collation_name, newcoll)) {
520 ++collation_ix;
521 Safefree(collation_name);
522 collation_name = savepv(newcoll);
ff68c719 523 collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 524
bbce6d69
PP
525 {
526 /* 2: at most so many chars ('a', 'b'). */
527 /* 50: surely no system expands a char more. */
528#define XFRMBUFSIZE (2 * 50)
529 char xbuf[XFRMBUFSIZE];
530 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
531 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
532 SSize_t mult = fb - fa;
533 if (mult < 1)
534 croak("strxfrm() gets absurd");
535 collxfrm_base = (fa > mult) ? (fa - mult) : 0;
536 collxfrm_mult = mult;
537 }
bbce6d69 538 }
bbce6d69 539
36477c24
PP
540#endif /* USE_LOCALE_COLLATE */
541}
bbce6d69
PP
542
543/*
544 * Set up for a new numeric locale.
545 */
546void
8ac85365 547perl_new_numeric(char *newnum)
bbce6d69 548{
36477c24
PP
549#ifdef USE_LOCALE_NUMERIC
550
bbce6d69
PP
551 if (! newnum) {
552 if (numeric_name) {
553 Safefree(numeric_name);
554 numeric_name = NULL;
555 numeric_standard = TRUE;
556 numeric_local = TRUE;
557 }
558 return;
559 }
560
561 if (! numeric_name || strNE(numeric_name, newnum)) {
562 Safefree(numeric_name);
563 numeric_name = savepv(newnum);
ff68c719 564 numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
bbce6d69
PP
565 numeric_local = TRUE;
566 }
36477c24
PP
567
568#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
569}
570
571void
8ac85365 572perl_set_numeric_standard(void)
bbce6d69 573{
5f05dabc
PP
574#ifdef USE_LOCALE_NUMERIC
575
bbce6d69
PP
576 if (! numeric_standard) {
577 setlocale(LC_NUMERIC, "C");
578 numeric_standard = TRUE;
579 numeric_local = FALSE;
580 }
5f05dabc
PP
581
582#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
583}
584
585void
8ac85365 586perl_set_numeric_local(void)
bbce6d69 587{
5f05dabc
PP
588#ifdef USE_LOCALE_NUMERIC
589
bbce6d69
PP
590 if (! numeric_local) {
591 setlocale(LC_NUMERIC, numeric_name);
592 numeric_standard = FALSE;
593 numeric_local = TRUE;
594 }
bbce6d69 595
36477c24 596#endif /* USE_LOCALE_NUMERIC */
5f05dabc 597}
36477c24 598
bbce6d69 599
36477c24
PP
600/*
601 * Initialize locale awareness.
602 */
f0c5b223 603int
8ac85365 604perl_init_i18nl10n(int printwarn)
f0c5b223
TB
605{
606 int ok = 1;
607 /* returns
608 * 1 = set ok or not applicable,
609 * 0 = fallback to C locale,
610 * -1 = fallback to C locale failed
611 */
bbce6d69 612
36477c24 613#ifdef USE_LOCALE
bbce6d69 614
36477c24 615#ifdef USE_LOCALE_CTYPE
bbce6d69 616 char *curctype = NULL;
36477c24
PP
617#endif /* USE_LOCALE_CTYPE */
618#ifdef USE_LOCALE_COLLATE
bbce6d69 619 char *curcoll = NULL;
36477c24
PP
620#endif /* USE_LOCALE_COLLATE */
621#ifdef USE_LOCALE_NUMERIC
bbce6d69 622 char *curnum = NULL;
36477c24 623#endif /* USE_LOCALE_NUMERIC */
76e3520e
GS
624 char *lc_all = PerlEnv_getenv("LC_ALL");
625 char *lang = PerlEnv_getenv("LANG");
bbce6d69 626 bool setlocale_failure = FALSE;
f0c5b223 627
02b32252
CS
628#ifdef LOCALE_ENVIRON_REQUIRED
629
630 /*
631 * Ultrix setlocale(..., "") fails if there are no environment
632 * variables from which to get a locale name.
633 */
634
635 bool done = FALSE;
636
637#ifdef LC_ALL
638 if (lang) {
639 if (setlocale(LC_ALL, ""))
640 done = TRUE;
641 else
642 setlocale_failure = TRUE;
643 }
644 if (!setlocale_failure)
645#endif /* LC_ALL */
646 {
647#ifdef USE_LOCALE_CTYPE
648 if (! (curctype = setlocale(LC_CTYPE,
76e3520e 649 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
02b32252
CS
650 ? "" : Nullch)))
651 setlocale_failure = TRUE;
652#endif /* USE_LOCALE_CTYPE */
653#ifdef USE_LOCALE_COLLATE
654 if (! (curcoll = setlocale(LC_COLLATE,
76e3520e 655 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
02b32252
CS
656 ? "" : Nullch)))
657 setlocale_failure = TRUE;
658#endif /* USE_LOCALE_COLLATE */
659#ifdef USE_LOCALE_NUMERIC
660 if (! (curnum = setlocale(LC_NUMERIC,
76e3520e 661 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
02b32252
CS
662 ? "" : Nullch)))
663 setlocale_failure = TRUE;
664#endif /* USE_LOCALE_NUMERIC */
665 }
666
667#else /* !LOCALE_ENVIRON_REQUIRED */
668
bbce6d69 669#ifdef LC_ALL
5f05dabc 670
bbce6d69
PP
671 if (! setlocale(LC_ALL, ""))
672 setlocale_failure = TRUE;
5f05dabc
PP
673 else {
674#ifdef USE_LOCALE_CTYPE
675 curctype = setlocale(LC_CTYPE, Nullch);
676#endif /* USE_LOCALE_CTYPE */
677#ifdef USE_LOCALE_COLLATE
678 curcoll = setlocale(LC_COLLATE, Nullch);
679#endif /* USE_LOCALE_COLLATE */
680#ifdef USE_LOCALE_NUMERIC
681 curnum = setlocale(LC_NUMERIC, Nullch);
682#endif /* USE_LOCALE_NUMERIC */
683 }
684
685#else /* !LC_ALL */
bbce6d69 686
36477c24 687#ifdef USE_LOCALE_CTYPE
5f05dabc 688 if (! (curctype = setlocale(LC_CTYPE, "")))
bbce6d69 689 setlocale_failure = TRUE;
36477c24
PP
690#endif /* USE_LOCALE_CTYPE */
691#ifdef USE_LOCALE_COLLATE
5f05dabc 692 if (! (curcoll = setlocale(LC_COLLATE, "")))
bbce6d69 693 setlocale_failure = TRUE;
36477c24
PP
694#endif /* USE_LOCALE_COLLATE */
695#ifdef USE_LOCALE_NUMERIC
5f05dabc 696 if (! (curnum = setlocale(LC_NUMERIC, "")))
bbce6d69 697 setlocale_failure = TRUE;
36477c24 698#endif /* USE_LOCALE_NUMERIC */
bbce6d69 699
5f05dabc
PP
700#endif /* LC_ALL */
701
02b32252
CS
702#endif /* !LOCALE_ENVIRON_REQUIRED */
703
5f05dabc
PP
704 if (setlocale_failure) {
705 char *p;
706 bool locwarn = (printwarn > 1 ||
707 printwarn &&
76e3520e 708 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)));
20cec16a 709
5f05dabc
PP
710 if (locwarn) {
711#ifdef LC_ALL
712
713 PerlIO_printf(PerlIO_stderr(),
714 "perl: warning: Setting locale failed.\n");
715
716#else /* !LC_ALL */
717
ef7eada9 718 PerlIO_printf(PerlIO_stderr(),
bbce6d69 719 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 720#ifdef USE_LOCALE_CTYPE
bbce6d69 721 if (! curctype)
5f05dabc 722 PerlIO_printf(PerlIO_stderr(), "LC_CTYPE ");
36477c24
PP
723#endif /* USE_LOCALE_CTYPE */
724#ifdef USE_LOCALE_COLLATE
bbce6d69 725 if (! curcoll)
5f05dabc 726 PerlIO_printf(PerlIO_stderr(), "LC_COLLATE ");
36477c24
PP
727#endif /* USE_LOCALE_COLLATE */
728#ifdef USE_LOCALE_NUMERIC
bbce6d69 729 if (! curnum)
5f05dabc 730 PerlIO_printf(PerlIO_stderr(), "LC_NUMERIC ");
36477c24 731#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
732 PerlIO_printf(PerlIO_stderr(), "\n");
733
5f05dabc
PP
734#endif /* LC_ALL */
735
760ac839 736 PerlIO_printf(PerlIO_stderr(),
bbce6d69 737 "perl: warning: Please check that your locale settings:\n");
ef7eada9
JH
738
739 PerlIO_printf(PerlIO_stderr(),
bbce6d69
PP
740 "\tLC_ALL = %c%s%c,\n",
741 lc_all ? '"' : '(',
742 lc_all ? lc_all : "unset",
743 lc_all ? '"' : ')');
5f05dabc
PP
744
745 {
746 char **e;
747 for (e = environ; *e; e++) {
748 if (strnEQ(*e, "LC_", 3)
749 && strnNE(*e, "LC_ALL=", 7)
750 && (p = strchr(*e, '=')))
751 PerlIO_printf(PerlIO_stderr(), "\t%.*s = \"%s\",\n",
fb73857a 752 (int)(p - *e), *e, p + 1);
5f05dabc
PP
753 }
754 }
755
ef7eada9 756 PerlIO_printf(PerlIO_stderr(),
bbce6d69 757 "\tLANG = %c%s%c\n",
5f05dabc 758 lang ? '"' : '(',
bbce6d69
PP
759 lang ? lang : "unset",
760 lang ? '"' : ')');
ef7eada9 761
bbce6d69
PP
762 PerlIO_printf(PerlIO_stderr(),
763 " are supported and installed on your system.\n");
5f05dabc 764 }
ef7eada9 765
5f05dabc
PP
766#ifdef LC_ALL
767
768 if (setlocale(LC_ALL, "C")) {
769 if (locwarn)
770 PerlIO_printf(PerlIO_stderr(),
771 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 772 ok = 0;
ef7eada9 773 }
5f05dabc
PP
774 else {
775 if (locwarn)
776 PerlIO_printf(PerlIO_stderr(),
777 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
778 ok = -1;
779 }
bbce6d69 780
5f05dabc
PP
781#else /* ! LC_ALL */
782
783 if (0
36477c24 784#ifdef USE_LOCALE_CTYPE
5f05dabc 785 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24
PP
786#endif /* USE_LOCALE_CTYPE */
787#ifdef USE_LOCALE_COLLATE
5f05dabc 788 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24
PP
789#endif /* USE_LOCALE_COLLATE */
790#ifdef USE_LOCALE_NUMERIC
5f05dabc 791 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 792#endif /* USE_LOCALE_NUMERIC */
5f05dabc
PP
793 )
794 {
795 if (locwarn)
bbce6d69 796 PerlIO_printf(PerlIO_stderr(),
5f05dabc
PP
797 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
798 ok = -1;
bbce6d69 799 }
5f05dabc 800
bbce6d69 801#endif /* ! LC_ALL */
5f05dabc
PP
802
803#ifdef USE_LOCALE_CTYPE
804 curctype = setlocale(LC_CTYPE, Nullch);
805#endif /* USE_LOCALE_CTYPE */
806#ifdef USE_LOCALE_COLLATE
807 curcoll = setlocale(LC_COLLATE, Nullch);
808#endif /* USE_LOCALE_COLLATE */
809#ifdef USE_LOCALE_NUMERIC
810 curnum = setlocale(LC_NUMERIC, Nullch);
811#endif /* USE_LOCALE_NUMERIC */
ef7eada9
JH
812 }
813
36477c24 814#ifdef USE_LOCALE_CTYPE
bbce6d69 815 perl_new_ctype(curctype);
36477c24 816#endif /* USE_LOCALE_CTYPE */
bbce6d69 817
36477c24 818#ifdef USE_LOCALE_COLLATE
bbce6d69 819 perl_new_collate(curcoll);
36477c24 820#endif /* USE_LOCALE_COLLATE */
bbce6d69 821
36477c24 822#ifdef USE_LOCALE_NUMERIC
bbce6d69 823 perl_new_numeric(curnum);
36477c24 824#endif /* USE_LOCALE_NUMERIC */
ef7eada9 825
36477c24 826#endif /* USE_LOCALE */
ef7eada9 827
f0c5b223
TB
828 return ok;
829}
830
bbce6d69
PP
831/* Backwards compatibility. */
832int
8ac85365 833perl_init_i18nl14n(int printwarn)
bbce6d69 834{
5f05dabc 835 return perl_init_i18nl10n(printwarn);
bbce6d69 836}
ef7eada9 837
36477c24 838#ifdef USE_LOCALE_COLLATE
ef7eada9 839
bbce6d69
PP
840/*
841 * mem_collxfrm() is a bit like strxfrm() but with two important
842 * differences. First, it handles embedded NULs. Second, it allocates
843 * a bit more memory than needed for the transformed data itself.
844 * The real transformed data begins at offset sizeof(collationix).
845 * Please see sv_collxfrm() to see how this is used.
846 */
847char *
8ac85365 848mem_collxfrm(const char *s, STRLEN len, STRLEN *xlen)
bbce6d69
PP
849{
850 char *xbuf;
76e3520e 851 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69
PP
852
853 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
854 /* the +1 is for the terminating NUL. */
855
76e3520e
GS
856 xAlloc = sizeof(collation_ix) + collxfrm_base + (collxfrm_mult * len) + 1;
857 New(171, xbuf, xAlloc, char);
bbce6d69
PP
858 if (! xbuf)
859 goto bad;
860
861 *(U32*)xbuf = collation_ix;
862 xout = sizeof(collation_ix);
863 for (xin = 0; xin < len; ) {
864 SSize_t xused;
865
866 for (;;) {
76e3520e 867 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69
PP
868 if (xused == -1)
869 goto bad;
76e3520e 870 if (xused < xAlloc - xout)
bbce6d69 871 break;
76e3520e
GS
872 xAlloc = (2 * xAlloc) + 1;
873 Renew(xbuf, xAlloc, char);
bbce6d69
PP
874 if (! xbuf)
875 goto bad;
876 }
ef7eada9 877
bbce6d69
PP
878 xin += strlen(s + xin) + 1;
879 xout += xused;
880
881 /* Embedded NULs are understood but silently skipped
882 * because they make no sense in locale collation. */
883 }
ef7eada9 884
bbce6d69
PP
885 xbuf[xout] = '\0';
886 *xlen = xout - sizeof(collation_ix);
887 return xbuf;
888
889 bad:
890 Safefree(xbuf);
891 *xlen = 0;
892 return NULL;
ef7eada9
JH
893}
894
36477c24 895#endif /* USE_LOCALE_COLLATE */
bbce6d69 896
378cc40b 897void
2779dcf1 898fbm_compile(SV *sv, U32 flags /* not used yet */)
378cc40b 899{
a687059c
LW
900 register unsigned char *s;
901 register unsigned char *table;
79072805
LW
902 register U32 i;
903 register U32 len = SvCUR(sv);
904 I32 rarest = 0;
905 U32 frequency = 256;
906
c277df42
IZ
907 sv_upgrade(sv, SVt_PVBM);
908 if (len > 255 || len == 0) /* TAIL might be on on a zero-length string. */
748a9306 909 return; /* can't have offsets that big */
02128f11
IZ
910 if (len > 2) {
911 Sv_Grow(sv,len + 258);
912 table = (unsigned char*)(SvPVX(sv) + len + 1);
913 s = table - 2;
914 for (i = 0; i < 256; i++) {
915 table[i] = len;
916 }
917 i = 0;
918 while (s >= (unsigned char*)(SvPVX(sv)))
919 {
920 if (table[*s] == len)
921 table[*s] = i;
922 s--,i++;
923 }
378cc40b 924 }
bbce6d69 925 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 926 SvVALID_on(sv);
378cc40b 927
463ee0b2 928 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69
PP
929 for (i = 0; i < len; i++) {
930 if (freq[s[i]] < frequency) {
931 rarest = i;
932 frequency = freq[s[i]];
378cc40b
LW
933 }
934 }
79072805
LW
935 BmRARE(sv) = s[rarest];
936 BmPREVIOUS(sv) = rarest;
760ac839 937 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW
938}
939
378cc40b 940char *
8ac85365 941fbm_instr(unsigned char *big, register unsigned char *bigend, SV *littlestr)
378cc40b 942{
a687059c 943 register unsigned char *s;
79072805
LW
944 register I32 tmp;
945 register I32 littlelen;
a687059c
LW
946 register unsigned char *little;
947 register unsigned char *table;
948 register unsigned char *olds;
949 register unsigned char *oldlittle;
378cc40b 950
79072805 951 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
a0d0e21e
LW
952 STRLEN len;
953 char *l = SvPV(littlestr,len);
c277df42 954 if (!len) {
02128f11
IZ
955 if (SvTAIL(littlestr)) { /* Can be only 0-len constant
956 substr => we can ignore SvVALID */
957 if (multiline) {
958 char *t = "\n";
3fe6f2dc
MB
959 if ((s = (unsigned char*)ninstr((char*)big, (char*)bigend,
960 t, t + len))) {
961 return (char*)s;
962 }
02128f11 963 }
c277df42 964 if (bigend > big && bigend[-1] == '\n')
161b471a 965 return (char *)(bigend - 1);
c277df42 966 else
161b471a 967 return (char *) bigend;
c277df42 968 }
d48672a2 969 return (char*)big;
c277df42 970 }
a0d0e21e 971 return ninstr((char*)big,(char*)bigend, l, l + len);
d48672a2 972 }
378cc40b 973
79072805
LW
974 littlelen = SvCUR(littlestr);
975 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
0f85fab0
LW
976 if (littlelen > bigend - big)
977 return Nullch;
463ee0b2 978 little = (unsigned char*)SvPVX(littlestr);
bbce6d69 979 s = bigend - littlelen;
02128f11
IZ
980 if (s > big
981 && bigend[-1] == '\n'
982 && s[-1] == *little && memEQ((char*)s - 1,(char*)little,littlelen))
983 return (char*)s - 1; /* how sweet it is */
984 else if (*s == *little && memEQ((char*)s,(char*)little,littlelen))
bbce6d69 985 return (char*)s; /* how sweet it is */
02128f11
IZ
986 return Nullch;
987 }
988 if (littlelen <= 2) {
989 unsigned char c1 = (unsigned char)SvPVX(littlestr)[0];
990 unsigned char c2 = (unsigned char)SvPVX(littlestr)[1];
991 /* This may do extra comparisons if littlelen == 2, but this
992 should be hidden in the noise since we do less indirection. */
993
994 s = big;
995 bigend -= littlelen;
996 while (s <= bigend) {
997 if (s[0] == c1
998 && (littlelen == 1 || s[1] == c2)
999 && (!SvTAIL(littlestr)
1000 || s == bigend
1001 || s[littlelen] == '\n')) /* Automatically multiline */
3fe6f2dc
MB
1002 {
1003 return (char*)s;
1004 }
02128f11 1005 s++;
a687059c 1006 }
bbce6d69 1007 return Nullch;
a687059c 1008 }
463ee0b2 1009 table = (unsigned char*)(SvPVX(littlestr) + littlelen + 1);
62b28dd9
LW
1010 if (--littlelen >= bigend - big)
1011 return Nullch;
1012 s = big + littlelen;
a687059c 1013 oldlittle = little = table - 2;
bbce6d69
PP
1014 if (s < bigend) {
1015 top2:
1016 /*SUPPRESS 560*/
1017 if (tmp = table[*s]) {
62b28dd9 1018#ifdef POINTERRIGOR
bbce6d69
PP
1019 if (bigend - s > tmp) {
1020 s += tmp;
1021 goto top2;
1022 }
62b28dd9 1023#else
bbce6d69
PP
1024 if ((s += tmp) < bigend)
1025 goto top2;
62b28dd9 1026#endif
bbce6d69 1027 return Nullch;
a687059c 1028 }
bbce6d69
PP
1029 else {
1030 tmp = littlelen; /* less expensive than calling strncmp() */
1031 olds = s;
1032 while (tmp--) {
1033 if (*--s == *--little)
1034 continue;
c277df42 1035 differ:
bbce6d69
PP
1036 s = olds + 1; /* here we pay the price for failure */
1037 little = oldlittle;
1038 if (s < bigend) /* fake up continue to outer loop */
62b28dd9 1039 goto top2;
62b28dd9 1040 return Nullch;
a687059c 1041 }
c277df42
IZ
1042 if (SvTAIL(littlestr) /* automatically multiline */
1043 && olds + 1 != bigend
1044 && olds[1] != '\n')
1045 goto differ;
bbce6d69 1046 return (char *)s;
378cc40b
LW
1047 }
1048 }
1049 return Nullch;
1050}
1051
c277df42
IZ
1052/* start_shift, end_shift are positive quantities which give offsets
1053 of ends of some substring of bigstr.
1054 If `last' we want the last occurence.
1055 old_posp is the way of communication between consequent calls if
1056 the next call needs to find the .
1057 The initial *old_posp should be -1.
1058 Note that we do not take into account SvTAIL, so it may give wrong
1059 positives if _ALL flag is set.
1060 */
1061
378cc40b 1062char *
c277df42 1063screaminstr(SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1064{
a687059c
LW
1065 register unsigned char *s, *x;
1066 register unsigned char *big;
79072805
LW
1067 register I32 pos;
1068 register I32 previous;
1069 register I32 first;
a687059c 1070 register unsigned char *little;
c277df42 1071 register I32 stop_pos;
a687059c 1072 register unsigned char *littleend;
c277df42 1073 I32 found = 0;
378cc40b 1074
c277df42
IZ
1075 if (*old_posp == -1
1076 ? (pos = screamfirst[BmRARE(littlestr)]) < 0
1077 : (((pos = *old_posp), pos += screamnext[pos]) == 0))
378cc40b 1078 return Nullch;
463ee0b2 1079 little = (unsigned char *)(SvPVX(littlestr));
79072805 1080 littleend = little + SvCUR(littlestr);
378cc40b 1081 first = *little++;
c277df42 1082 /* The value of pos we can start at: */
79072805 1083 previous = BmPREVIOUS(littlestr);
463ee0b2 1084 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ
1085 /* The value of pos we can stop at: */
1086 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
1087 if (previous + start_shift > stop_pos) return Nullch;
1088 while (pos < previous + start_shift) {
378cc40b
LW
1089 if (!(pos += screamnext[pos]))
1090 return Nullch;
1091 }
de3bb511 1092#ifdef POINTERRIGOR
bbce6d69 1093 do {
c277df42 1094 if (pos >= stop_pos) return Nullch;
bbce6d69
PP
1095 if (big[pos-previous] != first)
1096 continue;
1097 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1098 if (*s++ != *x++) {
1099 s--;
1100 break;
de3bb511 1101 }
bbce6d69 1102 }
c277df42
IZ
1103 if (s == littleend) {
1104 *old_posp = pos;
1105 if (!last) return (char *)(big+pos-previous);
1106 found = 1;
1107 }
bbce6d69 1108 } while ( pos += screamnext[pos] );
c277df42 1109 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW
1110#else /* !POINTERRIGOR */
1111 big -= previous;
bbce6d69 1112 do {
c277df42 1113 if (pos >= stop_pos) return Nullch;
bbce6d69
PP
1114 if (big[pos] != first)
1115 continue;
1116 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1117 if (*s++ != *x++) {
1118 s--;
1119 break;
378cc40b 1120 }
bbce6d69 1121 }
c277df42
IZ
1122 if (s == littleend) {
1123 *old_posp = pos;
1124 if (!last) return (char *)(big+pos);
1125 found = 1;
1126 }
bbce6d69 1127 } while ( pos += screamnext[pos] );
c277df42 1128 return (last && found) ? (char *)(big+(*old_posp)) : Nullch;
de3bb511 1129#endif /* POINTERRIGOR */
8d063cd8
LW
1130}
1131
79072805 1132I32
8ac85365 1133ibcmp(char *s1, char *s2, register I32 len)
79072805 1134{
bbce6d69
PP
1135 register U8 *a = (U8 *)s1;
1136 register U8 *b = (U8 *)s2;
79072805 1137 while (len--) {
bbce6d69
PP
1138 if (*a != *b && *a != fold[*b])
1139 return 1;
1140 a++,b++;
1141 }
1142 return 0;
1143}
1144
1145I32
8ac85365 1146ibcmp_locale(char *s1, char *s2, register I32 len)
bbce6d69
PP
1147{
1148 register U8 *a = (U8 *)s1;
1149 register U8 *b = (U8 *)s2;
1150 while (len--) {
1151 if (*a != *b && *a != fold_locale[*b])
1152 return 1;
1153 a++,b++;
79072805
LW
1154 }
1155 return 0;
1156}
1157
8d063cd8
LW
1158/* copy a string to a safe spot */
1159
1160char *
8ac85365 1161savepv(char *sv)
8d063cd8 1162{
a687059c 1163 register char *newaddr;
8d063cd8 1164
79072805
LW
1165 New(902,newaddr,strlen(sv)+1,char);
1166 (void)strcpy(newaddr,sv);
8d063cd8
LW
1167 return newaddr;
1168}
1169
a687059c
LW
1170/* same thing but with a known length */
1171
1172char *
8ac85365 1173savepvn(char *sv, register I32 len)
a687059c
LW
1174{
1175 register char *newaddr;
1176
1177 New(903,newaddr,len+1,char);
79072805 1178 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW
1179 newaddr[len] = '\0'; /* is now */
1180 return newaddr;
1181}
1182
fc36a67e
PP
1183/* the SV for form() and mess() is not kept in an arena */
1184
76e3520e 1185STATIC SV *
8ac85365 1186mess_alloc(void)
fc36a67e
PP
1187{
1188 SV *sv;
1189 XPVMG *any;
1190
1191 /* Create as PVMG now, to avoid any upgrading later */
1192 New(905, sv, 1, SV);
1193 Newz(905, any, 1, XPVMG);
1194 SvFLAGS(sv) = SVt_PVMG;
1195 SvANY(sv) = (void*)any;
1196 SvREFCNT(sv) = 1 << 30; /* practically infinite */
1197 return sv;
1198}
1199
8990e307 1200char *
46fc3d4c 1201form(const char* pat, ...)
8990e307 1202{
46fc3d4c 1203 va_list args;
46fc3d4c 1204 va_start(args, pat);
fc36a67e
PP
1205 if (!mess_sv)
1206 mess_sv = mess_alloc();
1207 sv_vsetpvfn(mess_sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
46fc3d4c 1208 va_end(args);
fc36a67e 1209 return SvPVX(mess_sv);
46fc3d4c 1210}
a687059c 1211
46fc3d4c 1212char *
8ac85365 1213mess(const char *pat, va_list *args)
46fc3d4c
PP
1214{
1215 SV *sv;
1216 static char dgd[] = " during global destruction.\n";
1217
46fc3d4c 1218 if (!mess_sv)
fc36a67e 1219 mess_sv = mess_alloc();
46fc3d4c 1220 sv = mess_sv;
fc36a67e 1221 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1222 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1223 dTHR;
2304df62 1224 if (dirty)
46fc3d4c 1225 sv_catpv(sv, dgd);
2304df62 1226 else {
46fc3d4c 1227 if (curcop->cop_line)
fc36a67e 1228 sv_catpvf(sv, " at %_ line %ld",
46fc3d4c 1229 GvSV(curcop->cop_filegv), (long)curcop->cop_line);
c07a80fd
PP
1230 if (GvIO(last_in_gv) && IoLINES(GvIOp(last_in_gv))) {
1231 bool line_mode = (RsSIMPLE(rs) &&
1232 SvLEN(rs) == 1 && *SvPVX(rs) == '\n');
46fc3d4c
PP
1233 sv_catpvf(sv, ", <%s> %s %ld",
1234 last_in_gv == argvgv ? "" : GvNAME(last_in_gv),
1235 line_mode ? "line" : "chunk",
1236 (long)IoLINES(GvIOp(last_in_gv)));
2304df62 1237 }
46fc3d4c 1238 sv_catpv(sv, ".\n");
a687059c 1239 }
a687059c 1240 }
46fc3d4c 1241 return SvPVX(sv);
a687059c
LW
1242}
1243
36477c24 1244OP *
71be2cbc 1245die(const char* pat, ...)
36477c24 1246{
5dc0d613 1247 dTHR;
36477c24
PP
1248 va_list args;
1249 char *message;
36477c24
PP
1250 int was_in_eval = in_eval;
1251 HV *stash;
1252 GV *gv;
1253 CV *cv;
1254
57d3b86d 1255#ifdef USE_THREADS
199100c8
MB
1256 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
1257 "%p: die: curstack = %p, mainstack = %p\n",
1258 thr, curstack, mainstack));
57d3b86d 1259#endif /* USE_THREADS */
36477c24 1260
36477c24 1261 va_start(args, pat);
4e6ea2c3 1262 message = pat ? mess(pat, &args) : Nullch;
36477c24
PP
1263 va_end(args);
1264
57d3b86d 1265#ifdef USE_THREADS
199100c8
MB
1266 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
1267 "%p: die: message = %s\ndiehook = %p\n",
1268 thr, message, diehook));
57d3b86d 1269#endif /* USE_THREADS */
1738f5c4
CS
1270 if (diehook) {
1271 /* sv_2cv might call croak() */
1272 SV *olddiehook = diehook;
1273 ENTER;
1274 SAVESPTR(diehook);
1275 diehook = Nullsv;
1276 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1277 LEAVE;
1278 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1279 dSP;
774d564b
PP
1280 SV *msg;
1281
1282 ENTER;
4e6ea2c3
GS
1283 if(message) {
1284 msg = newSVpv(message, 0);
1285 SvREADONLY_on(msg);
1286 SAVEFREESV(msg);
1287 }
1288 else {
1289 msg = ERRSV;
1290 }
1738f5c4 1291
8931a351 1292 PUSHSTACK(SI_DIEHOOK);
924508f0 1293 PUSHMARK(SP);
1738f5c4
CS
1294 XPUSHs(msg);
1295 PUTBACK;
1296 perl_call_sv((SV*)cv, G_DISCARD);
8931a351 1297 POPSTACK();
774d564b 1298 LEAVE;
1738f5c4 1299 }
36477c24
PP
1300 }
1301
1302 restartop = die_where(message);
57d3b86d 1303#ifdef USE_THREADS
d9f997d7 1304 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
7c06b590
GS
1305 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
1306 thr, restartop, was_in_eval, top_env));
57d3b86d 1307#endif /* USE_THREADS */
7c06b590 1308 if ((!restartop && was_in_eval) || top_env->je_prev)
6224f72b 1309 JMPENV_JUMP(3);
36477c24
PP
1310 return restartop;
1311}
1312
79072805 1313void
71be2cbc 1314croak(const char* pat, ...)
a687059c 1315{
11343788 1316 dTHR;
a687059c 1317 va_list args;
de3bb511 1318 char *message;
748a9306
LW
1319 HV *stash;
1320 GV *gv;
1321 CV *cv;
a687059c 1322
8990e307 1323 va_start(args, pat);
2304df62 1324 message = mess(pat, &args);
a687059c 1325 va_end(args);
11343788 1326#ifdef USE_THREADS
d9f997d7 1327 DEBUG_L(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
11343788 1328#endif /* USE_THREADS */
20cec16a 1329 if (diehook) {
1738f5c4 1330 /* sv_2cv might call croak() */
20cec16a 1331 SV *olddiehook = diehook;
1738f5c4
CS
1332 ENTER;
1333 SAVESPTR(diehook);
1334 diehook = Nullsv;
20cec16a 1335 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS
1336 LEAVE;
1337 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1338 dSP;
774d564b
PP
1339 SV *msg;
1340
1341 ENTER;
1342 msg = newSVpv(message, 0);
1343 SvREADONLY_on(msg);
1344 SAVEFREESV(msg);
20cec16a 1345
8931a351 1346 PUSHSTACK(SI_DIEHOOK);
924508f0 1347 PUSHMARK(SP);
1738f5c4 1348 XPUSHs(msg);
20cec16a
PP
1349 PUTBACK;
1350 perl_call_sv((SV*)cv, G_DISCARD);
8931a351 1351 POPSTACK();
774d564b 1352 LEAVE;
20cec16a 1353 }
748a9306 1354 }
a0d0e21e
LW
1355 if (in_eval) {
1356 restartop = die_where(message);
6224f72b 1357 JMPENV_JUMP(3);
a0d0e21e 1358 }
760ac839
LW
1359 PerlIO_puts(PerlIO_stderr(),message);
1360 (void)PerlIO_flush(PerlIO_stderr());
f86702cc 1361 my_failure_exit();
a687059c
LW
1362}
1363
8990e307 1364void
71be2cbc 1365warn(const char* pat,...)
a687059c
LW
1366{
1367 va_list args;
de3bb511 1368 char *message;
748a9306
LW
1369 HV *stash;
1370 GV *gv;
1371 CV *cv;
a687059c 1372
8990e307 1373 va_start(args, pat);
2304df62 1374 message = mess(pat, &args);
a687059c
LW
1375 va_end(args);
1376
20cec16a 1377 if (warnhook) {
1738f5c4 1378 /* sv_2cv might call warn() */
11343788 1379 dTHR;
20cec16a 1380 SV *oldwarnhook = warnhook;
1738f5c4
CS
1381 ENTER;
1382 SAVESPTR(warnhook);
1383 warnhook = Nullsv;
20cec16a 1384 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS
1385 LEAVE;
1386 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1387 dSP;
774d564b
PP
1388 SV *msg;
1389
1390 ENTER;
1391 msg = newSVpv(message, 0);
1392 SvREADONLY_on(msg);
1393 SAVEFREESV(msg);
1394
8931a351 1395 PUSHSTACK(SI_WARNHOOK);
924508f0 1396 PUSHMARK(SP);
774d564b 1397 XPUSHs(msg);
20cec16a
PP
1398 PUTBACK;
1399 perl_call_sv((SV*)cv, G_DISCARD);
8931a351 1400 POPSTACK();
774d564b 1401 LEAVE;
20cec16a
PP
1402 return;
1403 }
748a9306 1404 }
20cec16a 1405 PerlIO_puts(PerlIO_stderr(),message);
a687059c 1406#ifdef LEAKTEST
8c52afec
IZ
1407 DEBUG_L(*message == '!'
1408 ? (xstat(message[1]=='!'
1409 ? (message[2]=='!' ? 2 : 1)
1410 : 0)
1411 , 0)
1412 : 0);
a687059c 1413#endif
20cec16a 1414 (void)PerlIO_flush(PerlIO_stderr());
a687059c 1415}
8d063cd8 1416
a0d0e21e 1417#ifndef VMS /* VMS' my_setenv() is in VMS.c */
3e3baf6d 1418#ifndef WIN32
8d063cd8 1419void
8ac85365 1420my_setenv(char *nam, char *val)
8d063cd8 1421{
79072805 1422 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1423
fe14fcc3 1424 if (environ == origenviron) { /* need we copy environment? */
79072805
LW
1425 I32 j;
1426 I32 max;
fe14fcc3
LW
1427 char **tmpenv;
1428
de3bb511 1429 /*SUPPRESS 530*/
fe14fcc3
LW
1430 for (max = i; environ[max]; max++) ;
1431 New(901,tmpenv, max+2, char*);
1432 for (j=0; j<max; j++) /* copy environment */
a0d0e21e 1433 tmpenv[j] = savepv(environ[j]);
fe14fcc3
LW
1434 tmpenv[max] = Nullch;
1435 environ = tmpenv; /* tell exec where it is now */
1436 }
a687059c 1437 if (!val) {
e5ebf479 1438 Safefree(environ[i]);
a687059c
LW
1439 while (environ[i]) {
1440 environ[i] = environ[i+1];
1441 i++;
1442 }
1443 return;
1444 }
8d063cd8 1445 if (!environ[i]) { /* does not exist yet */
fe14fcc3 1446 Renew(environ, i+2, char*); /* just expand it a bit */
8d063cd8
LW
1447 environ[i+1] = Nullch; /* make sure it's null terminated */
1448 }
fe14fcc3
LW
1449 else
1450 Safefree(environ[i]);
a687059c 1451 New(904, environ[i], strlen(nam) + strlen(val) + 2, char);
62b28dd9 1452#ifndef MSDOS
a687059c 1453 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
62b28dd9
LW
1454#else
1455 /* MS-DOS requires environment variable names to be in uppercase */
fe14fcc3
LW
1456 /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but
1457 * some utilities and applications may break because they only look
1458 * for upper case strings. (Fixed strupr() bug here.)]
1459 */
1460 strcpy(environ[i],nam); strupr(environ[i]);
62b28dd9
LW
1461 (void)sprintf(environ[i] + strlen(nam),"=%s",val);
1462#endif /* MSDOS */
8d063cd8
LW
1463}
1464
3e3baf6d 1465#else /* if WIN32 */
68dc0745
PP
1466
1467void
4e35701f 1468my_setenv(char *nam,char *val)
68dc0745 1469{
3e3baf6d
TB
1470
1471#ifdef USE_WIN32_RTL_ENV
1472
68dc0745
PP
1473 register char *envstr;
1474 STRLEN namlen = strlen(nam);
3e3baf6d
TB
1475 STRLEN vallen;
1476 char *oldstr = environ[setenv_getix(nam)];
1477
1478 /* putenv() has totally broken semantics in both the Borland
1479 * and Microsoft CRTLs. They either store the passed pointer in
1480 * the environment without making a copy, or make a copy and don't
1481 * free it. And on top of that, they dont free() old entries that
1482 * are being replaced/deleted. This means the caller must
1483 * free any old entries somehow, or we end up with a memory
1484 * leak every time my_setenv() is called. One might think
1485 * one could directly manipulate environ[], like the UNIX code
1486 * above, but direct changes to environ are not allowed when
1487 * calling putenv(), since the RTLs maintain an internal
1488 * *copy* of environ[]. Bad, bad, *bad* stink.
1489 * GSAR 97-06-07
1490 */
68dc0745 1491
3e3baf6d
TB
1492 if (!val) {
1493 if (!oldstr)
1494 return;
1495 val = "";
1496 vallen = 0;
1497 }
1498 else
1499 vallen = strlen(val);
fc36a67e 1500 New(904, envstr, namlen + vallen + 3, char);
68dc0745 1501 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 1502 (void)PerlEnv_putenv(envstr);
3e3baf6d
TB
1503 if (oldstr)
1504 Safefree(oldstr);
1505#ifdef _MSC_VER
1506 Safefree(envstr); /* MSVCRT leaks without this */
1507#endif
1508
1509#else /* !USE_WIN32_RTL_ENV */
1510
1511 /* The sane way to deal with the environment.
1512 * Has these advantages over putenv() & co.:
1513 * * enables us to store a truly empty value in the
1514 * environment (like in UNIX).
1515 * * we don't have to deal with RTL globals, bugs and leaks.
1516 * * Much faster.
1517 * Why you may want to enable USE_WIN32_RTL_ENV:
1518 * * environ[] and RTL functions will not reflect changes,
1519 * which might be an issue if extensions want to access
1520 * the env. via RTL. This cuts both ways, since RTL will
1521 * not see changes made by extensions that call the Win32
1522 * functions directly, either.
1523 * GSAR 97-06-07
1524 */
1525 SetEnvironmentVariable(nam,val);
1526
1527#endif
1528}
1529
1530#endif /* WIN32 */
1531
1532I32
8ac85365 1533setenv_getix(char *nam)
3e3baf6d
TB
1534{
1535 register I32 i, len = strlen(nam);
1536
1537 for (i = 0; environ[i]; i++) {
1538 if (
1539#ifdef WIN32
1540 strnicmp(environ[i],nam,len) == 0
1541#else
1542 strnEQ(environ[i],nam,len)
1543#endif
1544 && environ[i][len] == '=')
1545 break; /* strnEQ must come first to avoid */
1546 } /* potential SEGV's */
1547 return i;
68dc0745
PP
1548}
1549
a0d0e21e 1550#endif /* !VMS */
378cc40b 1551
16d20bd9 1552#ifdef UNLINK_ALL_VERSIONS
79072805 1553I32
378cc40b
LW
1554unlnk(f) /* unlink all versions of a file */
1555char *f;
1556{
79072805 1557 I32 i;
378cc40b 1558
6ad3d225 1559 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW
1560 return i ? 0 : -1;
1561}
1562#endif
1563
85e6fe83 1564#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 1565char *
4e35701f 1566my_bcopy(register char *from,register char *to,register I32 len)
378cc40b
LW
1567{
1568 char *retval = to;
1569
7c0587c8
LW
1570 if (from - to >= 0) {
1571 while (len--)
1572 *to++ = *from++;
1573 }
1574 else {
1575 to += len;
1576 from += len;
1577 while (len--)
faf8582f 1578 *(--to) = *(--from);
7c0587c8 1579 }
378cc40b
LW
1580 return retval;
1581}
ffed7fef 1582#endif
378cc40b 1583
fc36a67e
PP
1584#ifndef HAS_MEMSET
1585void *
1586my_memset(loc,ch,len)
1587register char *loc;
1588register I32 ch;
1589register I32 len;
1590{
1591 char *retval = loc;
1592
1593 while (len--)
1594 *loc++ = ch;
1595 return retval;
1596}
1597#endif
1598
7c0587c8 1599#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 1600char *
7c0587c8 1601my_bzero(loc,len)
378cc40b 1602register char *loc;
79072805 1603register I32 len;
378cc40b
LW
1604{
1605 char *retval = loc;
1606
1607 while (len--)
1608 *loc++ = 0;
1609 return retval;
1610}
1611#endif
7c0587c8 1612
36477c24 1613#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 1614I32
7c0587c8 1615my_memcmp(s1,s2,len)
36477c24
PP
1616char *s1;
1617char *s2;
79072805 1618register I32 len;
7c0587c8 1619{
36477c24
PP
1620 register U8 *a = (U8 *)s1;
1621 register U8 *b = (U8 *)s2;
79072805 1622 register I32 tmp;
7c0587c8
LW
1623
1624 while (len--) {
36477c24 1625 if (tmp = *a++ - *b++)
7c0587c8
LW
1626 return tmp;
1627 }
1628 return 0;
1629}
36477c24 1630#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 1631
fe14fcc3 1632#ifndef HAS_VPRINTF
a687059c 1633
85e6fe83 1634#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1635char *
1636#else
1637int
1638#endif
1639vsprintf(dest, pat, args)
71be2cbc
PP
1640char *dest;
1641const char *pat;
1642char *args;
a687059c
LW
1643{
1644 FILE fakebuf;
1645
1646 fakebuf._ptr = dest;
1647 fakebuf._cnt = 32767;
35c8bce7
LW
1648#ifndef _IOSTRG
1649#define _IOSTRG 0
1650#endif
a687059c
LW
1651 fakebuf._flag = _IOWRT|_IOSTRG;
1652 _doprnt(pat, args, &fakebuf); /* what a kludge */
1653 (void)putc('\0', &fakebuf);
85e6fe83 1654#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1655 return(dest);
1656#else
1657 return 0; /* perl doesn't use return value */
1658#endif
1659}
1660
fe14fcc3 1661#endif /* HAS_VPRINTF */
a687059c
LW
1662
1663#ifdef MYSWAP
ffed7fef 1664#if BYTEORDER != 0x4321
a687059c 1665short
748a9306 1666my_swap(short s)
a687059c
LW
1667{
1668#if (BYTEORDER & 1) == 0
1669 short result;
1670
1671 result = ((s & 255) << 8) + ((s >> 8) & 255);
1672 return result;
1673#else
1674 return s;
1675#endif
1676}
1677
1678long
748a9306 1679my_htonl(long l)
a687059c
LW
1680{
1681 union {
1682 long result;
ffed7fef 1683 char c[sizeof(long)];
a687059c
LW
1684 } u;
1685
ffed7fef 1686#if BYTEORDER == 0x1234
a687059c
LW
1687 u.c[0] = (l >> 24) & 255;
1688 u.c[1] = (l >> 16) & 255;
1689 u.c[2] = (l >> 8) & 255;
1690 u.c[3] = l & 255;
1691 return u.result;
1692#else
ffed7fef 1693#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1694 croak("Unknown BYTEORDER\n");
a687059c 1695#else
79072805
LW
1696 register I32 o;
1697 register I32 s;
a687059c 1698
ffed7fef
LW
1699 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1700 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW
1701 }
1702 return u.result;
1703#endif
1704#endif
1705}
1706
1707long
748a9306 1708my_ntohl(long l)
a687059c
LW
1709{
1710 union {
1711 long l;
ffed7fef 1712 char c[sizeof(long)];
a687059c
LW
1713 } u;
1714
ffed7fef 1715#if BYTEORDER == 0x1234
a687059c
LW
1716 u.c[0] = (l >> 24) & 255;
1717 u.c[1] = (l >> 16) & 255;
1718 u.c[2] = (l >> 8) & 255;
1719 u.c[3] = l & 255;
1720 return u.l;
1721#else
ffed7fef 1722#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1723 croak("Unknown BYTEORDER\n");
a687059c 1724#else
79072805
LW
1725 register I32 o;
1726 register I32 s;
a687059c
LW
1727
1728 u.l = l;
1729 l = 0;
ffed7fef
LW
1730 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1731 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW
1732 }
1733 return l;
1734#endif
1735#endif
1736}
1737
ffed7fef 1738#endif /* BYTEORDER != 0x4321 */
988174c1
LW
1739#endif /* MYSWAP */
1740
1741/*
1742 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
1743 * If these functions are defined,
1744 * the BYTEORDER is neither 0x1234 nor 0x4321.
1745 * However, this is not assumed.
1746 * -DWS
1747 */
1748
1749#define HTOV(name,type) \
1750 type \
1751 name (n) \
1752 register type n; \
1753 { \
1754 union { \
1755 type value; \
1756 char c[sizeof(type)]; \
1757 } u; \
79072805
LW
1758 register I32 i; \
1759 register I32 s; \
988174c1
LW
1760 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1761 u.c[i] = (n >> s) & 0xFF; \
1762 } \
1763 return u.value; \
1764 }
1765
1766#define VTOH(name,type) \
1767 type \
1768 name (n) \
1769 register type n; \
1770 { \
1771 union { \
1772 type value; \
1773 char c[sizeof(type)]; \
1774 } u; \
79072805
LW
1775 register I32 i; \
1776 register I32 s; \
988174c1
LW
1777 u.value = n; \
1778 n = 0; \
1779 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1780 n += (u.c[i] & 0xFF) << s; \
1781 } \
1782 return n; \
1783 }
1784
1785#if defined(HAS_HTOVS) && !defined(htovs)
1786HTOV(htovs,short)
1787#endif
1788#if defined(HAS_HTOVL) && !defined(htovl)
1789HTOV(htovl,long)
1790#endif
1791#if defined(HAS_VTOHS) && !defined(vtohs)
1792VTOH(vtohs,short)
1793#endif
1794#if defined(HAS_VTOHL) && !defined(vtohl)
1795VTOH(vtohl,long)
1796#endif
a687059c 1797
5f05dabc
PP
1798 /* VMS' my_popen() is in VMS.c, same with OS/2. */
1799#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS)
760ac839 1800PerlIO *
8ac85365 1801my_popen(char *cmd, char *mode)
a687059c
LW
1802{
1803 int p[2];
8ac85365 1804 register I32 This, that;
79072805
LW
1805 register I32 pid;
1806 SV *sv;
1738f5c4 1807 I32 doexec = strNE(cmd,"-");
a687059c 1808
ddcf38b7
IZ
1809#ifdef OS2
1810 if (doexec) {
1811 return my_syspopen(cmd,mode);
1812 }
1813#endif
8ac85365
NIS
1814 This = (*mode == 'w');
1815 that = !This;
bbce6d69
PP
1816 if (doexec && tainting) {
1817 taint_env();
1818 taint_proper("Insecure %s%s", "EXEC");
d48672a2 1819 }
c2267164
IZ
1820 if (PerlProc_pipe(p) < 0)
1821 return Nullfp;
a687059c
LW
1822 while ((pid = (doexec?vfork():fork())) < 0) {
1823 if (errno != EAGAIN) {
6ad3d225 1824 PerlLIO_close(p[This]);
a687059c 1825 if (!doexec)
463ee0b2 1826 croak("Can't fork");
a687059c
LW
1827 return Nullfp;
1828 }
1829 sleep(5);
1830 }
1831 if (pid == 0) {
79072805
LW
1832 GV* tmpgv;
1833
30ac6d9b
GS
1834#undef THIS
1835#undef THAT
a687059c 1836#define THIS that
8ac85365 1837#define THAT This
6ad3d225 1838 PerlLIO_close(p[THAT]);
a687059c 1839 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS
1840 PerlLIO_dup2(p[THIS], *mode == 'r');
1841 PerlLIO_close(p[THIS]);
a687059c
LW
1842 }
1843 if (doexec) {
a0d0e21e 1844#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW
1845 int fd;
1846
1847#ifndef NOFILE
1848#define NOFILE 20
1849#endif
d48672a2 1850 for (fd = maxsysfd + 1; fd < NOFILE; fd++)
6ad3d225 1851 PerlLIO_close(fd);
ae986130 1852#endif
a687059c 1853 do_exec(cmd); /* may or may not use the shell */
6ad3d225 1854 PerlProc__exit(1);
a687059c 1855 }
de3bb511 1856 /*SUPPRESS 560*/
85e6fe83 1857 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
1e422769 1858 sv_setiv(GvSV(tmpgv), (IV)getpid());
9f68db38 1859 forkprocess = 0;
463ee0b2 1860 hv_clear(pidstatus); /* we have no children */
a687059c
LW
1861 return Nullfp;
1862#undef THIS
1863#undef THAT
1864 }
62b28dd9 1865 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 1866 PerlLIO_close(p[that]);
8ac85365 1867 if (p[that] < p[This]) {
6ad3d225
GS
1868 PerlLIO_dup2(p[This], p[that]);
1869 PerlLIO_close(p[This]);
8ac85365 1870 p[This] = p[that];
62b28dd9 1871 }
8ac85365 1872 sv = *av_fetch(fdpid,p[This],TRUE);
a0d0e21e 1873 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 1874 SvIVX(sv) = pid;
a687059c 1875 forkprocess = pid;
8ac85365 1876 return PerlIO_fdopen(p[This], mode);
a687059c 1877}
7c0587c8 1878#else
55497cff 1879#if defined(atarist) || defined(DJGPP)
7c0587c8 1880FILE *popen();
760ac839 1881PerlIO *
79072805 1882my_popen(cmd,mode)
7c0587c8
LW
1883char *cmd;
1884char *mode;
1885{
760ac839 1886 /* Needs work for PerlIO ! */
55497cff
PP
1887 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
1888 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW
1889}
1890#endif
1891
1892#endif /* !DOSISH */
a687059c 1893
748a9306 1894#ifdef DUMP_FDS
35ff7856
GS
1895void
1896dump_fds(char *s)
ae986130
LW
1897{
1898 int fd;
1899 struct stat tmpstatbuf;
1900
760ac839 1901 PerlIO_printf(PerlIO_stderr(),"%s", s);
ae986130 1902 for (fd = 0; fd < 32; fd++) {
6ad3d225 1903 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
760ac839 1904 PerlIO_printf(PerlIO_stderr()," %d",fd);
ae986130 1905 }
760ac839 1906 PerlIO_printf(PerlIO_stderr(),"\n");
ae986130 1907}
35ff7856 1908#endif /* DUMP_FDS */
ae986130 1909
fe14fcc3 1910#ifndef HAS_DUP2
fec02dd3 1911int
a687059c
LW
1912dup2(oldfd,newfd)
1913int oldfd;
1914int newfd;
1915{
a0d0e21e 1916#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD
1917 if (oldfd == newfd)
1918 return oldfd;
6ad3d225 1919 PerlLIO_close(newfd);
fec02dd3 1920 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 1921#else
fc36a67e
PP
1922#define DUP2_MAX_FDS 256
1923 int fdtmp[DUP2_MAX_FDS];
79072805 1924 I32 fdx = 0;
ae986130
LW
1925 int fd;
1926
fe14fcc3 1927 if (oldfd == newfd)
fec02dd3 1928 return oldfd;
6ad3d225 1929 PerlLIO_close(newfd);
fc36a67e 1930 /* good enough for low fd's... */
6ad3d225 1931 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 1932 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 1933 PerlLIO_close(fd);
fc36a67e
PP
1934 fd = -1;
1935 break;
1936 }
ae986130 1937 fdtmp[fdx++] = fd;
fc36a67e 1938 }
ae986130 1939 while (fdx > 0)
6ad3d225 1940 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 1941 return fd;
62b28dd9 1942#endif
a687059c
LW
1943}
1944#endif
1945
ff68c719
PP
1946
1947#ifdef HAS_SIGACTION
1948
1949Sighandler_t
8ac85365 1950rsignal(int signo, Sighandler_t handler)
ff68c719
PP
1951{
1952 struct sigaction act, oact;
1953
1954 act.sa_handler = handler;
1955 sigemptyset(&act.sa_mask);
1956 act.sa_flags = 0;
1957#ifdef SA_RESTART
1958 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
1959#endif
1960 if (sigaction(signo, &act, &oact) == -1)
36477c24 1961 return SIG_ERR;
ff68c719 1962 else
36477c24 1963 return oact.sa_handler;
ff68c719
PP
1964}
1965
1966Sighandler_t
8ac85365 1967rsignal_state(int signo)
ff68c719
PP
1968{
1969 struct sigaction oact;
1970
1971 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
1972 return SIG_ERR;
1973 else
1974 return oact.sa_handler;
1975}
1976
1977int
8ac85365 1978rsignal_save(int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719
PP
1979{
1980 struct sigaction act;
1981
1982 act.sa_handler = handler;
1983 sigemptyset(&act.sa_mask);
1984 act.sa_flags = 0;
1985#ifdef SA_RESTART
1986 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
1987#endif
1988 return sigaction(signo, &act, save);
1989}
1990
1991int
8ac85365 1992rsignal_restore(int signo, Sigsave_t *save)
ff68c719
PP
1993{
1994 return sigaction(signo, save, (struct sigaction *)NULL);
1995}
1996
1997#else /* !HAS_SIGACTION */
1998
1999Sighandler_t
4e35701f 2000rsignal(int signo, Sighandler_t handler)
ff68c719 2001{
6ad3d225 2002 return PerlProc_signal(signo, handler);
ff68c719
PP
2003}
2004
2005static int sig_trapped;
2006
2007static
2008Signal_t
4e35701f 2009sig_trap(int signo)
ff68c719
PP
2010{
2011 sig_trapped++;
2012}
2013
2014Sighandler_t
4e35701f 2015rsignal_state(int signo)
ff68c719
PP
2016{
2017 Sighandler_t oldsig;
2018
2019 sig_trapped = 0;
6ad3d225
GS
2020 oldsig = PerlProc_signal(signo, sig_trap);
2021 PerlProc_signal(signo, oldsig);
ff68c719 2022 if (sig_trapped)
6ad3d225 2023 PerlProc_kill(getpid(), signo);
ff68c719
PP
2024 return oldsig;
2025}
2026
2027int
4e35701f 2028rsignal_save(int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2029{
6ad3d225 2030 *save = PerlProc_signal(signo, handler);
ff68c719
PP
2031 return (*save == SIG_ERR) ? -1 : 0;
2032}
2033
2034int
4e35701f 2035rsignal_restore(int signo, Sigsave_t *save)
ff68c719 2036{
6ad3d225 2037 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719
PP
2038}
2039
2040#endif /* !HAS_SIGACTION */
2041
5f05dabc
PP
2042 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
2043#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS)
79072805 2044I32
6acef3b7 2045my_pclose(PerlIO *ptr)
a687059c 2046{
ff68c719 2047 Sigsave_t hstat, istat, qstat;
a687059c 2048 int status;
a0d0e21e 2049 SV **svp;
20188a90 2050 int pid;
1d3434b8 2051 int pid2;
03136e13
CS
2052 bool close_failed;
2053 int saved_errno;
2054#ifdef VMS
2055 int saved_vaxc_errno;
2056#endif
22fae026
TM
2057#ifdef WIN32
2058 int saved_win32_errno;
2059#endif
a687059c 2060
760ac839 2061 svp = av_fetch(fdpid,PerlIO_fileno(ptr),TRUE);
748a9306 2062 pid = (int)SvIVX(*svp);
a0d0e21e
LW
2063 SvREFCNT_dec(*svp);
2064 *svp = &sv_undef;
ddcf38b7
IZ
2065#ifdef OS2
2066 if (pid == -1) { /* Opened by popen. */
2067 return my_syspclose(ptr);
2068 }
2069#endif
03136e13
CS
2070 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2071 saved_errno = errno;
2072#ifdef VMS
2073 saved_vaxc_errno = vaxc$errno;
2074#endif
22fae026
TM
2075#ifdef WIN32
2076 saved_win32_errno = GetLastError();
2077#endif
03136e13 2078 }
7c0587c8 2079#ifdef UTS
6ad3d225 2080 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2081#endif
ff68c719
PP
2082 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2083 rsignal_save(SIGINT, SIG_IGN, &istat);
2084 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306 2085 do {
1d3434b8
GS
2086 pid2 = wait4pid(pid, &status, 0);
2087 } while (pid2 == -1 && errno == EINTR);
ff68c719
PP
2088 rsignal_restore(SIGHUP, &hstat);
2089 rsignal_restore(SIGINT, &istat);
2090 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS
2091 if (close_failed) {
2092 SETERRNO(saved_errno, saved_vaxc_errno);
2093 return -1;
2094 }
1d3434b8 2095 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2096}
4633a7c4
LW
2097#endif /* !DOSISH */
2098
2d7a9237 2099#if !defined(DOSISH) || defined(OS2) || defined(WIN32)
79072805 2100I32
8ac85365 2101wait4pid(int pid, int *statusp, int flags)
20188a90 2102{
79072805
LW
2103 SV *sv;
2104 SV** svp;
fc36a67e 2105 char spid[TYPE_CHARS(int)];
20188a90
LW
2106
2107 if (!pid)
2108 return -1;
20188a90
LW
2109 if (pid > 0) {
2110 sprintf(spid, "%d", pid);
79072805
LW
2111 svp = hv_fetch(pidstatus,spid,strlen(spid),FALSE);
2112 if (svp && *svp != &sv_undef) {
463ee0b2 2113 *statusp = SvIVX(*svp);
748a9306 2114 (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2115 return pid;
2116 }
2117 }
2118 else {
79072805 2119 HE *entry;
20188a90 2120
79072805
LW
2121 hv_iterinit(pidstatus);
2122 if (entry = hv_iternext(pidstatus)) {
a0d0e21e 2123 pid = atoi(hv_iterkey(entry,(I32*)statusp));
79072805 2124 sv = hv_iterval(pidstatus,entry);
463ee0b2 2125 *statusp = SvIVX(sv);
20188a90 2126 sprintf(spid, "%d", pid);
748a9306 2127 (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2128 return pid;
2129 }
2130 }
79072805 2131#ifdef HAS_WAITPID
367f3c24
IZ
2132# ifdef HAS_WAITPID_RUNTIME
2133 if (!HAS_WAITPID_RUNTIME)
2134 goto hard_way;
2135# endif
f55ee38a 2136 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ
2137#endif
2138#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2139 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ
2140#endif
2141#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2142 hard_way:
a0d0e21e
LW
2143 {
2144 I32 result;
2145 if (flags)
2146 croak("Can't do waitpid with flags");
2147 else {
76e3520e 2148 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW
2149 pidgone(result,*statusp);
2150 if (result < 0)
2151 *statusp = -1;
2152 }
2153 return result;
a687059c
LW
2154 }
2155#endif
a687059c 2156}
2d7a9237 2157#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2158
7c0587c8 2159void
de3bb511 2160/*SUPPRESS 590*/
8ac85365 2161pidgone(int pid, int status)
a687059c 2162{
79072805 2163 register SV *sv;
fc36a67e 2164 char spid[TYPE_CHARS(int)];
a687059c 2165
20188a90 2166 sprintf(spid, "%d", pid);
79072805 2167 sv = *hv_fetch(pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2168 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2169 SvIVX(sv) = status;
20188a90 2170 return;
a687059c
LW
2171}
2172
55497cff 2173#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2174int pclose();
ddcf38b7
IZ
2175#ifdef HAS_FORK
2176int /* Cannot prototype with I32
2177 in os2ish.h. */
2178my_syspclose(ptr)
2179#else
79072805
LW
2180I32
2181my_pclose(ptr)
ddcf38b7 2182#endif
760ac839 2183PerlIO *ptr;
a687059c 2184{
760ac839
LW
2185 /* Needs work for PerlIO ! */
2186 FILE *f = PerlIO_findFILE(ptr);
2187 I32 result = pclose(f);
2188 PerlIO_releaseFILE(ptr,f);
2189 return result;
a687059c 2190}
7c0587c8 2191#endif
9f68db38
LW
2192
2193void
8ac85365 2194repeatcpy(register char *to, register char *from, I32 len, register I32 count)
9f68db38 2195{
79072805 2196 register I32 todo;
9f68db38
LW
2197 register char *frombase = from;
2198
2199 if (len == 1) {
2200 todo = *from;
2201 while (count-- > 0)
2202 *to++ = todo;
2203 return;
2204 }
2205 while (count-- > 0) {
2206 for (todo = len; todo > 0; todo--) {
2207 *to++ = *from++;
2208 }
2209 from = frombase;
2210 }
2211}
0f85fab0
LW
2212
2213#ifndef CASTNEGFLOAT
463ee0b2 2214U32
79072805 2215cast_ulong(f)
0f85fab0
LW
2216double f;
2217{
2218 long along;
2219
27e2fb84 2220#if CASTFLAGS & 2
34de22dd
LW
2221# define BIGDOUBLE 2147483648.0
2222 if (f >= BIGDOUBLE)
2223 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2224#endif
0f85fab0
LW
2225 if (f >= 0.0)
2226 return (unsigned long)f;
2227 along = (long)f;
2228 return (unsigned long)along;
2229}
ed6116ce
LW
2230# undef BIGDOUBLE
2231#endif
2232
2233#ifndef CASTI32
5d94fbed 2234
5d94fbed
AD
2235/* Unfortunately, on some systems the cast_uv() function doesn't
2236 work with the system-supplied definition of ULONG_MAX. The
2237 comparison (f >= ULONG_MAX) always comes out true. It must be a
2238 problem with the compiler constant folding.
2239
2240 In any case, this workaround should be fine on any two's complement
2241 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2242 ccflags.
2243 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2244*/
1eb770ff
PP
2245
2246/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2247 of LONG_(MIN/MAX).
2248 -- Kenneth Albanowski <kjahds@kjahds.com>
2249*/
2250
20cec16a
PP
2251#ifndef MY_UV_MAX
2252# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD
2253#endif
2254
ed6116ce
LW
2255I32
2256cast_i32(f)
2257double f;
2258{
20cec16a
PP
2259 if (f >= I32_MAX)
2260 return (I32) I32_MAX;
2261 if (f <= I32_MIN)
2262 return (I32) I32_MIN;
ed6116ce
LW
2263 return (I32) f;
2264}
a0d0e21e
LW
2265
2266IV
2267cast_iv(f)
2268double f;
2269{
20cec16a
PP
2270 if (f >= IV_MAX)
2271 return (IV) IV_MAX;
2272 if (f <= IV_MIN)
2273 return (IV) IV_MIN;
a0d0e21e
LW
2274 return (IV) f;
2275}
5d94fbed
AD
2276
2277UV
2278cast_uv(f)
2279double f;
2280{
20cec16a
PP
2281 if (f >= MY_UV_MAX)
2282 return (UV) MY_UV_MAX;
5d94fbed
AD
2283 return (UV) f;
2284}
2285
0f85fab0 2286#endif
62b28dd9 2287
fe14fcc3 2288#ifndef HAS_RENAME
79072805 2289I32
62b28dd9
LW
2290same_dirent(a,b)
2291char *a;
2292char *b;
2293{
93a17b20
LW
2294 char *fa = strrchr(a,'/');
2295 char *fb = strrchr(b,'/');
62b28dd9
LW
2296 struct stat tmpstatbuf1;
2297 struct stat tmpstatbuf2;
46fc3d4c 2298 SV *tmpsv = sv_newmortal();
62b28dd9
LW
2299
2300 if (fa)
2301 fa++;
2302 else
2303 fa = a;
2304 if (fb)
2305 fb++;
2306 else
2307 fb = b;
2308 if (strNE(a,b))
2309 return FALSE;
2310 if (fa == a)
46fc3d4c 2311 sv_setpv(tmpsv, ".");
62b28dd9 2312 else
46fc3d4c 2313 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2314 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW
2315 return FALSE;
2316 if (fb == b)
46fc3d4c 2317 sv_setpv(tmpsv, ".");
62b28dd9 2318 else
46fc3d4c 2319 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2320 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW
2321 return FALSE;
2322 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2323 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2324}
fe14fcc3
LW
2325#endif /* !HAS_RENAME */
2326
55497cff 2327UV
8ac85365 2328scan_oct(char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2329{
2330 register char *s = start;
55497cff
PP
2331 register UV retval = 0;
2332 bool overflowed = FALSE;
fe14fcc3 2333
748a9306 2334 while (len && *s >= '0' && *s <= '7') {
55497cff
PP
2335 register UV n = retval << 3;
2336 if (!overflowed && (n >> 3) != retval) {
2337 warn("Integer overflow in octal number");
2338 overflowed = TRUE;
2339 }
2340 retval = n | (*s++ - '0');
748a9306 2341 len--;
fe14fcc3 2342 }
748a9306
LW
2343 if (dowarn && len && (*s == '8' || *s == '9'))
2344 warn("Illegal octal digit ignored");
fe14fcc3
LW
2345 *retlen = s - start;
2346 return retval;
2347}
2348
71be2cbc 2349UV
8ac85365 2350scan_hex(char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2351{
2352 register char *s = start;
55497cff
PP
2353 register UV retval = 0;
2354 bool overflowed = FALSE;
6ff81951 2355 char *tmp = s;
fe14fcc3 2356
4e35701f 2357 while (len-- && *s && (tmp = strchr((char *) hexdigit, *s))) {
55497cff
PP
2358 register UV n = retval << 4;
2359 if (!overflowed && (n >> 4) != retval) {
2360 warn("Integer overflow in hex number");
2361 overflowed = TRUE;
2362 }
4e35701f 2363 retval = n | ((tmp - hexdigit) & 15);
fe14fcc3
LW
2364 s++;
2365 }
6ff81951
GS
2366 if (dowarn && !tmp) {
2367 warn("Illegal hex digit ignored");
2368 }
fe14fcc3
LW
2369 *retlen = s - start;
2370 return retval;
2371}
760ac839 2372
491527d0
GS
2373char*
2374find_script(char *scriptname, bool dosearch, char **search_ext, I32 flags)
2375{
2376 dTHR;
2377 char *xfound = Nullch;
2378 char *xfailed = Nullch;
2379 register char *s;
2380 I32 len;
2381 int retval;
2382#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
2383# define SEARCH_EXTS ".bat", ".cmd", NULL
2384# define MAX_EXT_LEN 4
2385#endif
2386#ifdef OS2
2387# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
2388# define MAX_EXT_LEN 4
2389#endif
2390#ifdef VMS
2391# define SEARCH_EXTS ".pl", ".com", NULL
2392# define MAX_EXT_LEN 4
2393#endif
2394 /* additional extensions to try in each dir if scriptname not found */
2395#ifdef SEARCH_EXTS
2396 char *exts[] = { SEARCH_EXTS };
2397 char **ext = search_ext ? search_ext : exts;
2398 int extidx = 0, i = 0;
2399 char *curext = Nullch;
2400#else
2401# define MAX_EXT_LEN 0
2402#endif
2403
2404 /*
2405 * If dosearch is true and if scriptname does not contain path
2406 * delimiters, search the PATH for scriptname.
2407 *
2408 * If SEARCH_EXTS is also defined, will look for each
2409 * scriptname{SEARCH_EXTS} whenever scriptname is not found
2410 * while searching the PATH.
2411 *
2412 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
2413 * proceeds as follows:
2414 * If DOSISH or VMSISH:
2415 * + look for ./scriptname{,.foo,.bar}
2416 * + search the PATH for scriptname{,.foo,.bar}
2417 *
2418 * If !DOSISH:
2419 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
2420 * this will not look in '.' if it's not in the PATH)
2421 */
2422
2423#ifdef VMS
2424# ifdef ALWAYS_DEFTYPES
2425 len = strlen(scriptname);
2426 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
2427 int hasdir, idx = 0, deftypes = 1;
2428 bool seen_dot = 1;
2429
2430 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
2431# else
2432 if (dosearch) {
2433 int hasdir, idx = 0, deftypes = 1;
2434 bool seen_dot = 1;
2435
2436 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
2437# endif
2438 /* The first time through, just add SEARCH_EXTS to whatever we
2439 * already have, so we can check for default file types. */
2440 while (deftypes ||
2441 (!hasdir && my_trnlnm("DCL$PATH",tokenbuf,idx++)) )
2442 {
2443 if (deftypes) {
2444 deftypes = 0;
2445 *tokenbuf = '\0';
2446 }
2447 if ((strlen(tokenbuf) + strlen(scriptname)
2448 + MAX_EXT_LEN) >= sizeof tokenbuf)
2449 continue; /* don't search dir with too-long name */
2450 strcat(tokenbuf, scriptname);
2451#else /* !VMS */
2452
2453#ifdef DOSISH
2454 if (strEQ(scriptname, "-"))
2455 dosearch = 0;
2456 if (dosearch) { /* Look in '.' first. */
2457 char *cur = scriptname;
2458#ifdef SEARCH_EXTS
2459 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
2460 while (ext[i])
2461 if (strEQ(ext[i++],curext)) {
2462 extidx = -1; /* already has an ext */
2463 break;
2464 }
2465 do {
2466#endif
2467 DEBUG_p(PerlIO_printf(Perl_debug_log,
2468 "Looking for %s\n",cur));
2469 if (PerlLIO_stat(cur,&statbuf) >= 0) {
2470 dosearch = 0;
2471 scriptname = cur;
2472#ifdef SEARCH_EXTS
2473 break;
2474#endif
2475 }
2476#ifdef SEARCH_EXTS
2477 if (cur == scriptname) {
2478 len = strlen(scriptname);
2479 if (len+MAX_EXT_LEN+1 >= sizeof(tokenbuf))
2480 break;
2481 cur = strcpy(tokenbuf, scriptname);
2482 }
2483 } while (extidx >= 0 && ext[extidx] /* try an extension? */
2484 && strcpy(tokenbuf+len, ext[extidx++]));
2485#endif
2486 }
2487#endif
2488
2489 if (dosearch && !strchr(scriptname, '/')
2490#ifdef DOSISH
2491 && !strchr(scriptname, '\\')
2492#endif
2493 && (s = PerlEnv_getenv("PATH"))) {
2494 bool seen_dot = 0;
2495
2496 bufend = s + strlen(s);
2497 while (s < bufend) {
2498#if defined(atarist) || defined(DOSISH)
2499 for (len = 0; *s
2500# ifdef atarist
2501 && *s != ','
2502# endif
2503 && *s != ';'; len++, s++) {
2504 if (len < sizeof tokenbuf)
2505 tokenbuf[len] = *s;
2506 }
2507 if (len < sizeof tokenbuf)
2508 tokenbuf[len] = '\0';
2509#else /* ! (atarist || DOSISH) */
2510 s = delimcpy(tokenbuf, tokenbuf + sizeof tokenbuf, s, bufend,
2511 ':',
2512 &len);
2513#endif /* ! (atarist || DOSISH) */
2514 if (s < bufend)
2515 s++;
2516 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tokenbuf)
2517 continue; /* don't search dir with too-long name */
2518 if (len
2519#if defined(atarist) || defined(DOSISH)
2520 && tokenbuf[len - 1] != '/'
2521 && tokenbuf[len - 1] != '\\'
2522#endif
2523 )
2524 tokenbuf[len++] = '/';
2525 if (len == 2 && tokenbuf[0] == '.')
2526 seen_dot = 1;
2527 (void)strcpy(tokenbuf + len, scriptname);
2528#endif /* !VMS */
2529
2530#ifdef SEARCH_EXTS
2531 len = strlen(tokenbuf);
2532 if (extidx > 0) /* reset after previous loop */
2533 extidx = 0;
2534 do {
2535#endif
2536 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tokenbuf));
2537 retval = PerlLIO_stat(tokenbuf,&statbuf);
2538#ifdef SEARCH_EXTS
2539 } while ( retval < 0 /* not there */
2540 && extidx>=0 && ext[extidx] /* try an extension? */
2541 && strcpy(tokenbuf+len, ext[extidx++])
2542 );
2543#endif
2544 if (retval < 0)
2545 continue;
2546 if (S_ISREG(statbuf.st_mode)
2547 && cando(S_IRUSR,TRUE,&statbuf)
2548#ifndef DOSISH
2549 && cando(S_IXUSR,TRUE,&statbuf)
2550#endif
2551 )
2552 {
2553 xfound = tokenbuf; /* bingo! */
2554 break;
2555 }
2556 if (!xfailed)
2557 xfailed = savepv(tokenbuf);
2558 }
2559#ifndef DOSISH
2560 if (!xfound && !seen_dot && !xfailed && (PerlLIO_stat(scriptname,&statbuf) < 0))
2561#endif
2562 seen_dot = 1; /* Disable message. */
2563 if (!xfound)
2564 scriptname = NULL;
2565/* croak("Can't %s %s%s%s",
2566 (xfailed ? "execute" : "find"),
2567 (xfailed ? xfailed : scriptname),
2568 (xfailed ? "" : " on PATH"),
2569 (xfailed || seen_dot) ? "" : ", '.' not in PATH"); */
2570 if (xfailed)
2571 Safefree(xfailed);
2572 scriptname = xfound;
2573 }
2574 return scriptname;
2575}
2576
2577
11343788 2578#ifdef USE_THREADS
12ca11f6
MB
2579#ifdef FAKE_THREADS
2580/* Very simplistic scheduler for now */
2581void
2582schedule(void)
2583{
c7848ba1 2584 thr = thr->i.next_run;
12ca11f6
MB
2585}
2586
2587void
2588perl_cond_init(cp)
2589perl_cond *cp;
2590{
2591 *cp = 0;
2592}
2593
2594void
2595perl_cond_signal(cp)
2596perl_cond *cp;
2597{
51dd5992 2598 perl_os_thread t;
12ca11f6
MB
2599 perl_cond cond = *cp;
2600
2601 if (!cond)
2602 return;
2603 t = cond->thread;
2604 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
2605 t->i.next_run = thr->i.next_run;
2606 thr->i.next_run->i.prev_run = t;
2607 t->i.prev_run = thr;
2608 thr->i.next_run = t;
2609 thr->i.wait_queue = 0;
12ca11f6
MB
2610 /* Remove from the wait queue */
2611 *cp = cond->next;
2612 Safefree(cond);
2613}
2614
2615void
2616perl_cond_broadcast(cp)
2617perl_cond *cp;
2618{
51dd5992 2619 perl_os_thread t;
12ca11f6
MB
2620 perl_cond cond, cond_next;
2621
2622 for (cond = *cp; cond; cond = cond_next) {
2623 t = cond->thread;
2624 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
2625 t->i.next_run = thr->i.next_run;
2626 thr->i.next_run->i.prev_run = t;
2627 t->i.prev_run = thr;
2628 thr->i.next_run = t;
2629 thr->i.wait_queue = 0;
12ca11f6
MB
2630 /* Remove from the wait queue */
2631 cond_next = cond->next;
2632 Safefree(cond);
2633 }
2634 *cp = 0;
2635}
2636
2637void
2638perl_cond_wait(cp)
2639perl_cond *cp;
2640{
2641 perl_cond cond;
2642
c7848ba1 2643 if (thr->i.next_run == thr)
12ca11f6
MB
2644 croak("panic: perl_cond_wait called by last runnable thread");
2645
0f15f207 2646 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB
2647 cond->thread = thr;
2648 cond->next = *cp;
2649 *cp = cond;
c7848ba1 2650 thr->i.wait_queue = cond;
12ca11f6 2651 /* Remove ourselves from runnable queue */
c7848ba1
MB
2652 thr->i.next_run->i.prev_run = thr->i.prev_run;
2653 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB
2654}
2655#endif /* FAKE_THREADS */
2656
11343788 2657#ifdef OLD_PTHREADS_API
52e1cb5e 2658struct perl_thread *
11343788
MB
2659getTHR _((void))
2660{
2661 pthread_addr_t t;
2662
2663 if (pthread_getspecific(thr_key, &t))
2664 croak("panic: pthread_getspecific");
52e1cb5e 2665 return (struct perl_thread *) t;
11343788
MB
2666}
2667#endif /* OLD_PTHREADS_API */
f93b4edd
MB
2668
2669MAGIC *
8ac85365 2670condpair_magic(SV *sv)
f93b4edd
MB
2671{
2672 MAGIC *mg;
2673
2674 SvUPGRADE(sv, SVt_PVMG);
2675 mg = mg_find(sv, 'm');
2676 if (!mg) {
2677 condpair_t *cp;
2678
2679 New(53, cp, 1, condpair_t);
2680 MUTEX_INIT(&cp->mutex);
2681 COND_INIT(&cp->owner_cond);
2682 COND_INIT(&cp->cond);
2683 cp->owner = 0;
940cb80d 2684 LOCK_SV_MUTEX;
f93b4edd
MB
2685 mg = mg_find(sv, 'm');
2686 if (mg) {
2687 /* someone else beat us to initialising it */
940cb80d 2688 UNLOCK_SV_MUTEX;
f93b4edd
MB
2689 MUTEX_DESTROY(&cp->mutex);
2690 COND_DESTROY(&cp->owner_cond);
2691 COND_DESTROY(&cp->cond);
2692 Safefree(cp);
2693 }
2694 else {
2695 sv_magic(sv, Nullsv, 'm', 0, 0);
2696 mg = SvMAGIC(sv);
2697 mg->mg_ptr = (char *)cp;
565764a8 2698 mg->mg_len = sizeof(cp);
940cb80d 2699 UNLOCK_SV_MUTEX;
bc1f4c86 2700 DEBUG_L(WITH_THR(PerlIO_printf(PerlIO_stderr(),
c7848ba1 2701 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB
2702 }
2703 }
2704 return mg;
2705}
a863c7d1
MB
2706
2707/*
199100c8
MB
2708 * Make a new perl thread structure using t as a prototype. Some of the
2709 * fields for the new thread are copied from the prototype thread, t,
2710 * so t should not be running in perl at the time this function is
2711 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
2712 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 2713 */
52e1cb5e
JH
2714struct perl_thread *
2715new_struct_thread(struct perl_thread *t)
a863c7d1 2716{
52e1cb5e 2717 struct perl_thread *thr;
a863c7d1 2718 SV *sv;
199100c8
MB
2719 SV **svp;
2720 I32 i;
2721
2722 sv = newSVpv("", 0);
52e1cb5e
JH
2723 SvGROW(sv, sizeof(struct perl_thread) + 1);
2724 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 2725 thr = (Thread) SvPVX(sv);
199100c8 2726 /* debug */
52e1cb5e 2727 memset(thr, 0xab, sizeof(struct perl_thread));
199100c8
MB
2728 markstack = 0;
2729 scopestack = 0;
2730 savestack = 0;
2731 retstack = 0;
2732 dirty = 0;
2733 localizing = 0;
2734 /* end debug */
2735
2736 thr->oursv = sv;
d55594ae 2737 init_stacks(ARGS);
a863c7d1 2738
a863c7d1 2739 curcop = &compiling;
199100c8 2740 thr->cvcache = newHV();
54b9620d 2741 thr->threadsv = newAV();
a863c7d1 2742 thr->specific = newAV();
38a03e6e
MB
2743 thr->errsv = newSVpv("", 0);
2744 thr->errhv = newHV();
a863c7d1
MB
2745 thr->flags = THRf_R_JOINABLE;
2746 MUTEX_INIT(&thr->mutex);
199100c8
MB
2747
2748 curcop = t->Tcurcop; /* XXX As good a guess as any? */
2749 defstash = t->Tdefstash; /* XXX maybe these should */
2750 curstash = t->Tcurstash; /* always be set to main? */
d55594ae
GS
2751
2752
2753 /* top_env needs to be non-zero. It points to an area
2754 in which longjmp() stuff is stored, as C callstack
2755 info there at least is thread specific this has to
2756 be per-thread. Otherwise a 'die' in a thread gives
2757 that thread the C stack of last thread to do an eval {}!
2758 See comments in scope.h
2759 Initialize top entry (as in perl.c for main thread)
2760 */
6224f72b
GS
2761 start_env.je_prev = NULL;
2762 start_env.je_ret = -1;
2763 start_env.je_mustcatch = TRUE;
2764 top_env = &start_env;
d55594ae 2765
199100c8
MB
2766 in_eval = FALSE;
2767 restartop = 0;
2768
2769 tainted = t->Ttainted;
2770 curpm = t->Tcurpm; /* XXX No PMOP ref count */
2771 nrs = newSVsv(t->Tnrs);
2772 rs = newSVsv(t->Trs);
2773 last_in_gv = (GV*)SvREFCNT_inc(t->Tlast_in_gv);
2774 ofslen = t->Tofslen;
2775 ofs = savepvn(t->Tofs, ofslen);
2776 defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
2777 chopset = t->Tchopset;
2778 formtarget = newSVsv(t->Tformtarget);
2779 bodytarget = newSVsv(t->Tbodytarget);
2780 toptarget = newSVsv(t->Ttoptarget);
2781
54b9620d
MB
2782 /* Initialise all per-thread SVs that the template thread used */
2783 svp = AvARRAY(t->threadsv);
93965878 2784 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
199100c8
MB
2785 if (*svp && *svp != &sv_undef) {
2786 SV *sv = newSVsv(*svp);
54b9620d
MB
2787 av_store(thr->threadsv, i, sv);
2788 sv_magic(sv, 0, 0, &threadsv_names[i], 1);
199100c8 2789 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
54b9620d 2790 "new_struct_thread: copied threadsv %d %p->%p\n",i, t, thr));
199100c8
MB
2791 }
2792 }
940cb80d 2793 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 2794
a863c7d1
MB
2795 MUTEX_LOCK(&threads_mutex);
2796 nthreads++;
199100c8
MB
2797 thr->tid = ++threadnum;
2798 thr->next = t->next;
2799 thr->prev = t;
2800 t->next = thr;
2801 thr->next->prev = thr;
a863c7d1
MB
2802 MUTEX_UNLOCK(&threads_mutex);
2803
2804#ifdef HAVE_THREAD_INTERN
2805 init_thread_intern(thr);
a863c7d1 2806#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB
2807 return thr;
2808}
11343788 2809#endif /* USE_THREADS */
760ac839
LW
2810
2811#ifdef HUGE_VAL
2812/*
2813 * This hack is to force load of "huge" support from libm.a
2814 * So it is in perl for (say) POSIX to use.
2815 * Needed for SunOS with Sun's 'acc' for example.
2816 */
2817double
8ac85365 2818Perl_huge(void)
760ac839
LW
2819{
2820 return HUGE_VAL;
2821}
2822#endif
4e35701f 2823
22239a37
NIS
2824#ifdef PERL_GLOBAL_STRUCT
2825struct perl_vars *
2826Perl_GetVars(void)
2827{
2828 return &Perl_Vars;
2829}
31fb1209
NIS
2830#endif
2831
2832char **
2833get_op_names(void)
2834{
2835 return op_name;
2836}
2837
2838char **
2839get_op_descs(void)
2840{
2841 return op_desc;
2842}
9e6b2b00
GS
2843
2844char *
2845get_no_modify(void)
2846{
2847 return (char*)no_modify;
2848}
2849
2850U32 *
2851get_opargs(void)
2852{
2853 return opargs;
2854}
51aa15f3
GS
2855
2856
2857SV **
2858get_specialsv_list(void)
2859{
2860 return specialsv_list;
f55ee38a 2861}