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[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
LW
55#ifdef LEAKTEST
56static void xstat _((void));
57#endif
58
a863c7d1
MB
59#ifdef USE_THREADS
60static U32 threadnum = 0;
61#endif /* USE_THREADS */
62
55497cff 63#ifndef MYMALLOC
de3bb511 64
8d063cd8
LW
65/* paranoid version of malloc */
66
a687059c
LW
67/* NOTE: Do not call the next three routines directly. Use the macros
68 * in handy.h, so that we can easily redefine everything to do tracking of
69 * allocated hunks back to the original New to track down any memory leaks.
20cec16a 70 * XXX This advice seems to be widely ignored :-( --AD August 1996.
a687059c
LW
71 */
72
bd4080b3 73Malloc_t
8d063cd8
LW
74safemalloc(size)
75MEM_SIZE size;
76{
bd4080b3 77 Malloc_t ptr;
55497cff 78#ifdef HAS_64K_LIMIT
62b28dd9 79 if (size > 0xffff) {
760ac839 80 PerlIO_printf(PerlIO_stderr(), "Allocation too large: %lx\n", size) FLUSH;
79072805 81 my_exit(1);
62b28dd9 82 }
55497cff 83#endif /* HAS_64K_LIMIT */
34de22dd
LW
84#ifdef DEBUGGING
85 if ((long)size < 0)
463ee0b2 86 croak("panic: malloc");
34de22dd 87#endif
8d063cd8 88 ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */
79072805 89#if !(defined(I286) || defined(atarist))
760ac839 90 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) malloc %ld bytes\n",ptr,an++,(long)size));
79072805 91#else
760ac839 92 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) malloc %ld bytes\n",ptr,an++,(long)size));
8d063cd8
LW
93#endif
94 if (ptr != Nullch)
95 return ptr;
7c0587c8
LW
96 else if (nomemok)
97 return Nullch;
8d063cd8 98 else {
760ac839 99 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
79072805 100 my_exit(1);
8d063cd8
LW
101 }
102 /*NOTREACHED*/
103}
104
105/* paranoid version of realloc */
106
bd4080b3 107Malloc_t
8d063cd8 108saferealloc(where,size)
bd4080b3 109Malloc_t where;
8d063cd8
LW
110MEM_SIZE size;
111{
bd4080b3 112 Malloc_t ptr;
ecfc5424 113#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
bd4080b3 114 Malloc_t 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 */
378cc40b 124 if (!where)
463ee0b2 125 croak("Null realloc");
34de22dd
LW
126#ifdef DEBUGGING
127 if ((long)size < 0)
463ee0b2 128 croak("panic: realloc");
34de22dd 129#endif
8d063cd8 130 ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */
79072805
LW
131
132#if !(defined(I286) || defined(atarist))
133 DEBUG_m( {
760ac839
LW
134 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) rfree\n",where,an++);
135 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) realloc %ld bytes\n",ptr,an++,(long)size);
79072805
LW
136 } )
137#else
138 DEBUG_m( {
760ac839
LW
139 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) rfree\n",where,an++);
140 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) realloc %ld bytes\n",ptr,an++,(long)size);
79072805 141 } )
8d063cd8 142#endif
79072805 143
8d063cd8
LW
144 if (ptr != Nullch)
145 return ptr;
7c0587c8
LW
146 else if (nomemok)
147 return Nullch;
8d063cd8 148 else {
760ac839 149 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
79072805 150 my_exit(1);
8d063cd8
LW
151 }
152 /*NOTREACHED*/
153}
154
155/* safe version of free */
156
54310121 157Free_t
8d063cd8 158safefree(where)
bd4080b3 159Malloc_t where;
8d063cd8 160{
79072805 161#if !(defined(I286) || defined(atarist))
760ac839 162 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%x: (%05d) free\n",where,an++));
79072805 163#else
760ac839 164 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) free\n",where,an++));
8d063cd8 165#endif
378cc40b 166 if (where) {
de3bb511 167 /*SUPPRESS 701*/
378cc40b
LW
168 free(where);
169 }
8d063cd8
LW
170}
171
1050c9ca
PP
172/* safe version of calloc */
173
bd4080b3 174Malloc_t
1050c9ca
PP
175safecalloc(count, size)
176MEM_SIZE count;
177MEM_SIZE size;
178{
bd4080b3 179 Malloc_t ptr;
1050c9ca 180
55497cff 181#ifdef HAS_64K_LIMIT
5f05dabc
PP
182 if (size * count > 0xffff) {
183 PerlIO_printf(PerlIO_stderr(),
184 "Allocation too large: %lx\n", size * count) FLUSH;
185 my_exit(1);
186 }
55497cff 187#endif /* HAS_64K_LIMIT */
1050c9ca
PP
188#ifdef DEBUGGING
189 if ((long)size < 0 || (long)count < 0)
190 croak("panic: calloc");
191#endif
0b7c1c42
GS
192 size *= count;
193 ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */
1050c9ca 194#if !(defined(I286) || defined(atarist))
fb73857a 195 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
1050c9ca 196#else
fb73857a 197 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
1050c9ca 198#endif
1050c9ca
PP
199 if (ptr != Nullch) {
200 memset((void*)ptr, 0, size);
201 return ptr;
202 }
203 else if (nomemok)
204 return Nullch;
205 else {
760ac839 206 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
1050c9ca
PP
207 my_exit(1);
208 }
209 /*NOTREACHED*/
210}
211
55497cff 212#endif /* !MYMALLOC */
de3bb511 213
a687059c
LW
214#ifdef LEAKTEST
215
216#define ALIGN sizeof(long)
8d063cd8 217
bd4080b3 218Malloc_t
a687059c 219safexmalloc(x,size)
79072805 220I32 x;
a687059c 221MEM_SIZE size;
8d063cd8 222{
bd4080b3 223 register Malloc_t where;
8d063cd8 224
a687059c
LW
225 where = safemalloc(size + ALIGN);
226 xcount[x]++;
227 where[0] = x % 100;
228 where[1] = x / 100;
229 return where + ALIGN;
8d063cd8 230}
8d063cd8 231
bd4080b3 232Malloc_t
a687059c 233safexrealloc(where,size)
bd4080b3 234Malloc_t where;
a687059c
LW
235MEM_SIZE size;
236{
bd4080b3 237 register Malloc_t new = saferealloc(where - ALIGN, size + ALIGN);
a0d0e21e 238 return new + ALIGN;
a687059c
LW
239}
240
241void
242safexfree(where)
bd4080b3 243Malloc_t where;
a687059c 244{
79072805 245 I32 x;
a687059c
LW
246
247 if (!where)
248 return;
249 where -= ALIGN;
250 x = where[0] + 100 * where[1];
251 xcount[x]--;
252 safefree(where);
253}
254
bd4080b3 255Malloc_t
1050c9ca
PP
256safexcalloc(x,count,size)
257I32 x;
258MEM_SIZE count;
259MEM_SIZE size;
260{
bd4080b3 261 register Malloc_t where;
1050c9ca
PP
262
263 where = safexmalloc(x, size * count + ALIGN);
264 xcount[x]++;
265 memset((void*)where + ALIGN, 0, size * count);
266 where[0] = x % 100;
267 where[1] = x / 100;
268 return where + ALIGN;
269}
270
7c0587c8 271static void
a687059c 272xstat()
8d063cd8 273{
79072805 274 register I32 i;
8d063cd8 275
a687059c 276 for (i = 0; i < MAXXCOUNT; i++) {
de3bb511 277 if (xcount[i] > lastxcount[i]) {
760ac839 278 PerlIO_printf(PerlIO_stderr(),"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]);
a687059c 279 lastxcount[i] = xcount[i];
8d063cd8
LW
280 }
281 }
8d063cd8 282}
a687059c
LW
283
284#endif /* LEAKTEST */
8d063cd8
LW
285
286/* copy a string up to some (non-backslashed) delimiter, if any */
287
288char *
fc36a67e 289delimcpy(to, toend, from, fromend, delim, retlen)
62b28dd9 290register char *to;
fc36a67e 291register char *toend;
62b28dd9 292register char *from;
a687059c 293register char *fromend;
a0d0e21e 294register int delim;
79072805 295I32 *retlen;
8d063cd8 296{
fc36a67e
PP
297 register I32 tolen;
298 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW
299 if (*from == '\\') {
300 if (from[1] == delim)
301 from++;
fc36a67e
PP
302 else {
303 if (to < toend)
304 *to++ = *from;
305 tolen++;
306 from++;
307 }
378cc40b 308 }
bedebaa5 309 else if (*from == delim)
8d063cd8 310 break;
fc36a67e
PP
311 if (to < toend)
312 *to++ = *from;
8d063cd8 313 }
bedebaa5
CS
314 if (to < toend)
315 *to = '\0';
fc36a67e 316 *retlen = tolen;
8d063cd8
LW
317 return from;
318}
319
320/* return ptr to little string in big string, NULL if not found */
378cc40b 321/* This routine was donated by Corey Satten. */
8d063cd8
LW
322
323char *
324instr(big, little)
378cc40b
LW
325register char *big;
326register char *little;
327{
328 register char *s, *x;
79072805 329 register I32 first;
378cc40b 330
a687059c
LW
331 if (!little)
332 return big;
333 first = *little++;
378cc40b
LW
334 if (!first)
335 return big;
336 while (*big) {
337 if (*big++ != first)
338 continue;
339 for (x=big,s=little; *s; /**/ ) {
340 if (!*x)
341 return Nullch;
342 if (*s++ != *x++) {
343 s--;
344 break;
345 }
346 }
347 if (!*s)
348 return big-1;
349 }
350 return Nullch;
351}
8d063cd8 352
a687059c
LW
353/* same as instr but allow embedded nulls */
354
355char *
356ninstr(big, bigend, little, lend)
357register char *big;
358register char *bigend;
359char *little;
360char *lend;
8d063cd8 361{
a687059c 362 register char *s, *x;
79072805 363 register I32 first = *little;
a687059c 364 register char *littleend = lend;
378cc40b 365
a0d0e21e 366 if (!first && little >= littleend)
a687059c 367 return big;
de3bb511
LW
368 if (bigend - big < littleend - little)
369 return Nullch;
a687059c
LW
370 bigend -= littleend - little++;
371 while (big <= bigend) {
372 if (*big++ != first)
373 continue;
374 for (x=big,s=little; s < littleend; /**/ ) {
375 if (*s++ != *x++) {
376 s--;
377 break;
378 }
379 }
380 if (s >= littleend)
381 return big-1;
378cc40b 382 }
a687059c
LW
383 return Nullch;
384}
385
386/* reverse of the above--find last substring */
387
388char *
389rninstr(big, bigend, little, lend)
390register char *big;
391char *bigend;
392char *little;
393char *lend;
394{
395 register char *bigbeg;
396 register char *s, *x;
79072805 397 register I32 first = *little;
a687059c
LW
398 register char *littleend = lend;
399
a0d0e21e 400 if (!first && little >= littleend)
a687059c
LW
401 return bigend;
402 bigbeg = big;
403 big = bigend - (littleend - little++);
404 while (big >= bigbeg) {
405 if (*big-- != first)
406 continue;
407 for (x=big+2,s=little; s < littleend; /**/ ) {
408 if (*s++ != *x++) {
409 s--;
410 break;
411 }
412 }
413 if (s >= littleend)
414 return big+1;
378cc40b 415 }
a687059c 416 return Nullch;
378cc40b 417}
a687059c 418
bbce6d69
PP
419/*
420 * Set up for a new ctype locale.
421 */
55497cff 422void
bbce6d69
PP
423perl_new_ctype(newctype)
424 char *newctype;
ef7eada9 425{
36477c24
PP
426#ifdef USE_LOCALE_CTYPE
427
bbce6d69 428 int i;
ef7eada9 429
bbce6d69
PP
430 for (i = 0; i < 256; i++) {
431 if (isUPPER_LC(i))
432 fold_locale[i] = toLOWER_LC(i);
433 else if (isLOWER_LC(i))
434 fold_locale[i] = toUPPER_LC(i);
435 else
436 fold_locale[i] = i;
437 }
bbce6d69 438
36477c24
PP
439#endif /* USE_LOCALE_CTYPE */
440}
bbce6d69
PP
441
442/*
443 * Set up for a new collation locale.
444 */
445void
446perl_new_collate(newcoll)
447 char *newcoll;
448{
36477c24
PP
449#ifdef USE_LOCALE_COLLATE
450
bbce6d69
PP
451 if (! newcoll) {
452 if (collation_name) {
453 ++collation_ix;
454 Safefree(collation_name);
455 collation_name = NULL;
456 collation_standard = TRUE;
bbce6d69
PP
457 collxfrm_base = 0;
458 collxfrm_mult = 2;
bbce6d69
PP
459 }
460 return;
461 }
462
463 if (! collation_name || strNE(collation_name, newcoll)) {
464 ++collation_ix;
465 Safefree(collation_name);
466 collation_name = savepv(newcoll);
ff68c719 467 collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 468
bbce6d69
PP
469 {
470 /* 2: at most so many chars ('a', 'b'). */
471 /* 50: surely no system expands a char more. */
472#define XFRMBUFSIZE (2 * 50)
473 char xbuf[XFRMBUFSIZE];
474 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
475 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
476 SSize_t mult = fb - fa;
477 if (mult < 1)
478 croak("strxfrm() gets absurd");
479 collxfrm_base = (fa > mult) ? (fa - mult) : 0;
480 collxfrm_mult = mult;
481 }
bbce6d69 482 }
bbce6d69 483
36477c24
PP
484#endif /* USE_LOCALE_COLLATE */
485}
bbce6d69
PP
486
487/*
488 * Set up for a new numeric locale.
489 */
490void
491perl_new_numeric(newnum)
492 char *newnum;
493{
36477c24
PP
494#ifdef USE_LOCALE_NUMERIC
495
bbce6d69
PP
496 if (! newnum) {
497 if (numeric_name) {
498 Safefree(numeric_name);
499 numeric_name = NULL;
500 numeric_standard = TRUE;
501 numeric_local = TRUE;
502 }
503 return;
504 }
505
506 if (! numeric_name || strNE(numeric_name, newnum)) {
507 Safefree(numeric_name);
508 numeric_name = savepv(newnum);
ff68c719 509 numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
bbce6d69
PP
510 numeric_local = TRUE;
511 }
36477c24
PP
512
513#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
514}
515
516void
36477c24 517perl_set_numeric_standard()
bbce6d69 518{
5f05dabc
PP
519#ifdef USE_LOCALE_NUMERIC
520
bbce6d69
PP
521 if (! numeric_standard) {
522 setlocale(LC_NUMERIC, "C");
523 numeric_standard = TRUE;
524 numeric_local = FALSE;
525 }
5f05dabc
PP
526
527#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
528}
529
530void
36477c24 531perl_set_numeric_local()
bbce6d69 532{
5f05dabc
PP
533#ifdef USE_LOCALE_NUMERIC
534
bbce6d69
PP
535 if (! numeric_local) {
536 setlocale(LC_NUMERIC, numeric_name);
537 numeric_standard = FALSE;
538 numeric_local = TRUE;
539 }
bbce6d69 540
36477c24 541#endif /* USE_LOCALE_NUMERIC */
5f05dabc 542}
36477c24 543
bbce6d69 544
36477c24
PP
545/*
546 * Initialize locale awareness.
547 */
f0c5b223 548int
1050c9ca 549perl_init_i18nl10n(printwarn)
f0c5b223
TB
550 int printwarn;
551{
552 int ok = 1;
553 /* returns
554 * 1 = set ok or not applicable,
555 * 0 = fallback to C locale,
556 * -1 = fallback to C locale failed
557 */
bbce6d69 558
36477c24 559#ifdef USE_LOCALE
bbce6d69 560
36477c24 561#ifdef USE_LOCALE_CTYPE
bbce6d69 562 char *curctype = NULL;
36477c24
PP
563#endif /* USE_LOCALE_CTYPE */
564#ifdef USE_LOCALE_COLLATE
bbce6d69 565 char *curcoll = NULL;
36477c24
PP
566#endif /* USE_LOCALE_COLLATE */
567#ifdef USE_LOCALE_NUMERIC
bbce6d69 568 char *curnum = NULL;
36477c24 569#endif /* USE_LOCALE_NUMERIC */
02b32252 570 char *lc_all = getenv("LC_ALL");
5f05dabc 571 char *lang = getenv("LANG");
bbce6d69 572 bool setlocale_failure = FALSE;
f0c5b223 573
02b32252
CS
574#ifdef LOCALE_ENVIRON_REQUIRED
575
576 /*
577 * Ultrix setlocale(..., "") fails if there are no environment
578 * variables from which to get a locale name.
579 */
580
581 bool done = FALSE;
582
583#ifdef LC_ALL
584 if (lang) {
585 if (setlocale(LC_ALL, ""))
586 done = TRUE;
587 else
588 setlocale_failure = TRUE;
589 }
590 if (!setlocale_failure)
591#endif /* LC_ALL */
592 {
593#ifdef USE_LOCALE_CTYPE
594 if (! (curctype = setlocale(LC_CTYPE,
595 (!done && (lang || getenv("LC_CTYPE")))
596 ? "" : Nullch)))
597 setlocale_failure = TRUE;
598#endif /* USE_LOCALE_CTYPE */
599#ifdef USE_LOCALE_COLLATE
600 if (! (curcoll = setlocale(LC_COLLATE,
601 (!done && (lang || getenv("LC_COLLATE")))
602 ? "" : Nullch)))
603 setlocale_failure = TRUE;
604#endif /* USE_LOCALE_COLLATE */
605#ifdef USE_LOCALE_NUMERIC
606 if (! (curnum = setlocale(LC_NUMERIC,
607 (!done && (lang || getenv("LC_NUMERIC")))
608 ? "" : Nullch)))
609 setlocale_failure = TRUE;
610#endif /* USE_LOCALE_NUMERIC */
611 }
612
613#else /* !LOCALE_ENVIRON_REQUIRED */
614
bbce6d69 615#ifdef LC_ALL
5f05dabc 616
bbce6d69
PP
617 if (! setlocale(LC_ALL, ""))
618 setlocale_failure = TRUE;
5f05dabc
PP
619 else {
620#ifdef USE_LOCALE_CTYPE
621 curctype = setlocale(LC_CTYPE, Nullch);
622#endif /* USE_LOCALE_CTYPE */
623#ifdef USE_LOCALE_COLLATE
624 curcoll = setlocale(LC_COLLATE, Nullch);
625#endif /* USE_LOCALE_COLLATE */
626#ifdef USE_LOCALE_NUMERIC
627 curnum = setlocale(LC_NUMERIC, Nullch);
628#endif /* USE_LOCALE_NUMERIC */
629 }
630
631#else /* !LC_ALL */
bbce6d69 632
36477c24 633#ifdef USE_LOCALE_CTYPE
5f05dabc 634 if (! (curctype = setlocale(LC_CTYPE, "")))
bbce6d69 635 setlocale_failure = TRUE;
36477c24
PP
636#endif /* USE_LOCALE_CTYPE */
637#ifdef USE_LOCALE_COLLATE
5f05dabc 638 if (! (curcoll = setlocale(LC_COLLATE, "")))
bbce6d69 639 setlocale_failure = TRUE;
36477c24
PP
640#endif /* USE_LOCALE_COLLATE */
641#ifdef USE_LOCALE_NUMERIC
5f05dabc 642 if (! (curnum = setlocale(LC_NUMERIC, "")))
bbce6d69 643 setlocale_failure = TRUE;
36477c24 644#endif /* USE_LOCALE_NUMERIC */
bbce6d69 645
5f05dabc
PP
646#endif /* LC_ALL */
647
02b32252
CS
648#endif /* !LOCALE_ENVIRON_REQUIRED */
649
5f05dabc
PP
650 if (setlocale_failure) {
651 char *p;
652 bool locwarn = (printwarn > 1 ||
653 printwarn &&
654 (!(p = getenv("PERL_BADLANG")) || atoi(p)));
20cec16a 655
5f05dabc
PP
656 if (locwarn) {
657#ifdef LC_ALL
658
659 PerlIO_printf(PerlIO_stderr(),
660 "perl: warning: Setting locale failed.\n");
661
662#else /* !LC_ALL */
663
ef7eada9 664 PerlIO_printf(PerlIO_stderr(),
bbce6d69 665 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 666#ifdef USE_LOCALE_CTYPE
bbce6d69 667 if (! curctype)
5f05dabc 668 PerlIO_printf(PerlIO_stderr(), "LC_CTYPE ");
36477c24
PP
669#endif /* USE_LOCALE_CTYPE */
670#ifdef USE_LOCALE_COLLATE
bbce6d69 671 if (! curcoll)
5f05dabc 672 PerlIO_printf(PerlIO_stderr(), "LC_COLLATE ");
36477c24
PP
673#endif /* USE_LOCALE_COLLATE */
674#ifdef USE_LOCALE_NUMERIC
bbce6d69 675 if (! curnum)
5f05dabc 676 PerlIO_printf(PerlIO_stderr(), "LC_NUMERIC ");
36477c24 677#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
678 PerlIO_printf(PerlIO_stderr(), "\n");
679
5f05dabc
PP
680#endif /* LC_ALL */
681
760ac839 682 PerlIO_printf(PerlIO_stderr(),
bbce6d69 683 "perl: warning: Please check that your locale settings:\n");
ef7eada9
JH
684
685 PerlIO_printf(PerlIO_stderr(),
bbce6d69
PP
686 "\tLC_ALL = %c%s%c,\n",
687 lc_all ? '"' : '(',
688 lc_all ? lc_all : "unset",
689 lc_all ? '"' : ')');
5f05dabc
PP
690
691 {
692 char **e;
693 for (e = environ; *e; e++) {
694 if (strnEQ(*e, "LC_", 3)
695 && strnNE(*e, "LC_ALL=", 7)
696 && (p = strchr(*e, '=')))
697 PerlIO_printf(PerlIO_stderr(), "\t%.*s = \"%s\",\n",
fb73857a 698 (int)(p - *e), *e, p + 1);
5f05dabc
PP
699 }
700 }
701
ef7eada9 702 PerlIO_printf(PerlIO_stderr(),
bbce6d69 703 "\tLANG = %c%s%c\n",
5f05dabc 704 lang ? '"' : '(',
bbce6d69
PP
705 lang ? lang : "unset",
706 lang ? '"' : ')');
ef7eada9 707
bbce6d69
PP
708 PerlIO_printf(PerlIO_stderr(),
709 " are supported and installed on your system.\n");
5f05dabc 710 }
ef7eada9 711
5f05dabc
PP
712#ifdef LC_ALL
713
714 if (setlocale(LC_ALL, "C")) {
715 if (locwarn)
716 PerlIO_printf(PerlIO_stderr(),
717 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 718 ok = 0;
ef7eada9 719 }
5f05dabc
PP
720 else {
721 if (locwarn)
722 PerlIO_printf(PerlIO_stderr(),
723 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
724 ok = -1;
725 }
bbce6d69 726
5f05dabc
PP
727#else /* ! LC_ALL */
728
729 if (0
36477c24 730#ifdef USE_LOCALE_CTYPE
5f05dabc 731 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24
PP
732#endif /* USE_LOCALE_CTYPE */
733#ifdef USE_LOCALE_COLLATE
5f05dabc 734 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24
PP
735#endif /* USE_LOCALE_COLLATE */
736#ifdef USE_LOCALE_NUMERIC
5f05dabc 737 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 738#endif /* USE_LOCALE_NUMERIC */
5f05dabc
PP
739 )
740 {
741 if (locwarn)
bbce6d69 742 PerlIO_printf(PerlIO_stderr(),
5f05dabc
PP
743 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
744 ok = -1;
bbce6d69 745 }
5f05dabc 746
bbce6d69 747#endif /* ! LC_ALL */
5f05dabc
PP
748
749#ifdef USE_LOCALE_CTYPE
750 curctype = setlocale(LC_CTYPE, Nullch);
751#endif /* USE_LOCALE_CTYPE */
752#ifdef USE_LOCALE_COLLATE
753 curcoll = setlocale(LC_COLLATE, Nullch);
754#endif /* USE_LOCALE_COLLATE */
755#ifdef USE_LOCALE_NUMERIC
756 curnum = setlocale(LC_NUMERIC, Nullch);
757#endif /* USE_LOCALE_NUMERIC */
ef7eada9
JH
758 }
759
36477c24 760#ifdef USE_LOCALE_CTYPE
bbce6d69 761 perl_new_ctype(curctype);
36477c24 762#endif /* USE_LOCALE_CTYPE */
bbce6d69 763
36477c24 764#ifdef USE_LOCALE_COLLATE
bbce6d69 765 perl_new_collate(curcoll);
36477c24 766#endif /* USE_LOCALE_COLLATE */
bbce6d69 767
36477c24 768#ifdef USE_LOCALE_NUMERIC
bbce6d69 769 perl_new_numeric(curnum);
36477c24 770#endif /* USE_LOCALE_NUMERIC */
ef7eada9 771
36477c24 772#endif /* USE_LOCALE */
ef7eada9 773
f0c5b223
TB
774 return ok;
775}
776
bbce6d69
PP
777/* Backwards compatibility. */
778int
779perl_init_i18nl14n(printwarn)
780 int printwarn;
781{
5f05dabc 782 return perl_init_i18nl10n(printwarn);
bbce6d69 783}
ef7eada9 784
36477c24 785#ifdef USE_LOCALE_COLLATE
ef7eada9 786
bbce6d69
PP
787/*
788 * mem_collxfrm() is a bit like strxfrm() but with two important
789 * differences. First, it handles embedded NULs. Second, it allocates
790 * a bit more memory than needed for the transformed data itself.
791 * The real transformed data begins at offset sizeof(collationix).
792 * Please see sv_collxfrm() to see how this is used.
793 */
794char *
795mem_collxfrm(s, len, xlen)
796 const char *s;
797 STRLEN len;
798 STRLEN *xlen;
799{
800 char *xbuf;
801 STRLEN xalloc, xin, xout;
802
803 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
804 /* the +1 is for the terminating NUL. */
805
806 xalloc = sizeof(collation_ix) + collxfrm_base + (collxfrm_mult * len) + 1;
807 New(171, xbuf, xalloc, char);
808 if (! xbuf)
809 goto bad;
810
811 *(U32*)xbuf = collation_ix;
812 xout = sizeof(collation_ix);
813 for (xin = 0; xin < len; ) {
814 SSize_t xused;
815
816 for (;;) {
817 xused = strxfrm(xbuf + xout, s + xin, xalloc - xout);
818 if (xused == -1)
819 goto bad;
820 if (xused < xalloc - xout)
821 break;
822 xalloc = (2 * xalloc) + 1;
823 Renew(xbuf, xalloc, char);
824 if (! xbuf)
825 goto bad;
826 }
ef7eada9 827
bbce6d69
PP
828 xin += strlen(s + xin) + 1;
829 xout += xused;
830
831 /* Embedded NULs are understood but silently skipped
832 * because they make no sense in locale collation. */
833 }
ef7eada9 834
bbce6d69
PP
835 xbuf[xout] = '\0';
836 *xlen = xout - sizeof(collation_ix);
837 return xbuf;
838
839 bad:
840 Safefree(xbuf);
841 *xlen = 0;
842 return NULL;
ef7eada9
JH
843}
844
36477c24 845#endif /* USE_LOCALE_COLLATE */
bbce6d69 846
378cc40b 847void
bbce6d69 848fbm_compile(sv)
79072805 849SV *sv;
378cc40b 850{
a687059c
LW
851 register unsigned char *s;
852 register unsigned char *table;
79072805
LW
853 register U32 i;
854 register U32 len = SvCUR(sv);
855 I32 rarest = 0;
856 U32 frequency = 256;
857
748a9306
LW
858 if (len > 255)
859 return; /* can't have offsets that big */
79072805 860 Sv_Grow(sv,len+258);
463ee0b2 861 table = (unsigned char*)(SvPVX(sv) + len + 1);
a687059c
LW
862 s = table - 2;
863 for (i = 0; i < 256; i++) {
378cc40b
LW
864 table[i] = len;
865 }
866 i = 0;
463ee0b2 867 while (s >= (unsigned char*)(SvPVX(sv)))
a687059c 868 {
bbce6d69
PP
869 if (table[*s] == len)
870 table[*s] = i;
378cc40b
LW
871 s--,i++;
872 }
79072805 873 sv_upgrade(sv, SVt_PVBM);
bbce6d69 874 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 875 SvVALID_on(sv);
378cc40b 876
463ee0b2 877 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69
PP
878 for (i = 0; i < len; i++) {
879 if (freq[s[i]] < frequency) {
880 rarest = i;
881 frequency = freq[s[i]];
378cc40b
LW
882 }
883 }
79072805
LW
884 BmRARE(sv) = s[rarest];
885 BmPREVIOUS(sv) = rarest;
760ac839 886 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW
887}
888
378cc40b 889char *
79072805 890fbm_instr(big, bigend, littlestr)
a687059c
LW
891unsigned char *big;
892register unsigned char *bigend;
79072805 893SV *littlestr;
378cc40b 894{
a687059c 895 register unsigned char *s;
79072805
LW
896 register I32 tmp;
897 register I32 littlelen;
a687059c
LW
898 register unsigned char *little;
899 register unsigned char *table;
900 register unsigned char *olds;
901 register unsigned char *oldlittle;
378cc40b 902
79072805 903 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
a0d0e21e
LW
904 STRLEN len;
905 char *l = SvPV(littlestr,len);
906 if (!len)
d48672a2 907 return (char*)big;
a0d0e21e 908 return ninstr((char*)big,(char*)bigend, l, l + len);
d48672a2 909 }
378cc40b 910
79072805
LW
911 littlelen = SvCUR(littlestr);
912 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
0f85fab0
LW
913 if (littlelen > bigend - big)
914 return Nullch;
463ee0b2 915 little = (unsigned char*)SvPVX(littlestr);
bbce6d69 916 s = bigend - littlelen;
36477c24 917 if (*s == *little && memEQ((char*)s,(char*)little,littlelen))
bbce6d69
PP
918 return (char*)s; /* how sweet it is */
919 else if (bigend[-1] == '\n' && little[littlelen-1] != '\n'
920 && s > big) {
921 s--;
36477c24 922 if (*s == *little && memEQ((char*)s,(char*)little,littlelen))
bbce6d69 923 return (char*)s;
a687059c 924 }
bbce6d69 925 return Nullch;
a687059c 926 }
463ee0b2 927 table = (unsigned char*)(SvPVX(littlestr) + littlelen + 1);
62b28dd9
LW
928 if (--littlelen >= bigend - big)
929 return Nullch;
930 s = big + littlelen;
a687059c 931 oldlittle = little = table - 2;
bbce6d69
PP
932 if (s < bigend) {
933 top2:
934 /*SUPPRESS 560*/
935 if (tmp = table[*s]) {
62b28dd9 936#ifdef POINTERRIGOR
bbce6d69
PP
937 if (bigend - s > tmp) {
938 s += tmp;
939 goto top2;
940 }
62b28dd9 941#else
bbce6d69
PP
942 if ((s += tmp) < bigend)
943 goto top2;
62b28dd9 944#endif
bbce6d69 945 return Nullch;
a687059c 946 }
bbce6d69
PP
947 else {
948 tmp = littlelen; /* less expensive than calling strncmp() */
949 olds = s;
950 while (tmp--) {
951 if (*--s == *--little)
952 continue;
953 s = olds + 1; /* here we pay the price for failure */
954 little = oldlittle;
955 if (s < bigend) /* fake up continue to outer loop */
62b28dd9 956 goto top2;
62b28dd9 957 return Nullch;
a687059c 958 }
bbce6d69 959 return (char *)s;
378cc40b
LW
960 }
961 }
962 return Nullch;
963}
964
965char *
966screaminstr(bigstr, littlestr)
79072805
LW
967SV *bigstr;
968SV *littlestr;
378cc40b 969{
a687059c
LW
970 register unsigned char *s, *x;
971 register unsigned char *big;
79072805
LW
972 register I32 pos;
973 register I32 previous;
974 register I32 first;
a687059c
LW
975 register unsigned char *little;
976 register unsigned char *bigend;
977 register unsigned char *littleend;
378cc40b 978
79072805 979 if ((pos = screamfirst[BmRARE(littlestr)]) < 0)
378cc40b 980 return Nullch;
463ee0b2 981 little = (unsigned char *)(SvPVX(littlestr));
79072805 982 littleend = little + SvCUR(littlestr);
378cc40b 983 first = *little++;
79072805 984 previous = BmPREVIOUS(littlestr);
463ee0b2 985 big = (unsigned char *)(SvPVX(bigstr));
79072805 986 bigend = big + SvCUR(bigstr);
378cc40b
LW
987 while (pos < previous) {
988 if (!(pos += screamnext[pos]))
989 return Nullch;
990 }
de3bb511 991#ifdef POINTERRIGOR
bbce6d69
PP
992 do {
993 if (big[pos-previous] != first)
994 continue;
995 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
996 if (x >= bigend)
997 return Nullch;
998 if (*s++ != *x++) {
999 s--;
1000 break;
de3bb511 1001 }
bbce6d69
PP
1002 }
1003 if (s == littleend)
1004 return (char *)(big+pos-previous);
1005 } while ( pos += screamnext[pos] );
de3bb511
LW
1006#else /* !POINTERRIGOR */
1007 big -= previous;
bbce6d69
PP
1008 do {
1009 if (big[pos] != first)
1010 continue;
1011 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
1012 if (x >= bigend)
1013 return Nullch;
1014 if (*s++ != *x++) {
1015 s--;
1016 break;
378cc40b 1017 }
bbce6d69
PP
1018 }
1019 if (s == littleend)
1020 return (char *)(big+pos);
1021 } while ( pos += screamnext[pos] );
de3bb511 1022#endif /* POINTERRIGOR */
8d063cd8
LW
1023 return Nullch;
1024}
1025
79072805 1026I32
bbce6d69
PP
1027ibcmp(s1, s2, len)
1028char *s1, *s2;
79072805
LW
1029register I32 len;
1030{
bbce6d69
PP
1031 register U8 *a = (U8 *)s1;
1032 register U8 *b = (U8 *)s2;
79072805 1033 while (len--) {
bbce6d69
PP
1034 if (*a != *b && *a != fold[*b])
1035 return 1;
1036 a++,b++;
1037 }
1038 return 0;
1039}
1040
1041I32
1042ibcmp_locale(s1, s2, len)
1043char *s1, *s2;
1044register I32 len;
1045{
1046 register U8 *a = (U8 *)s1;
1047 register U8 *b = (U8 *)s2;
1048 while (len--) {
1049 if (*a != *b && *a != fold_locale[*b])
1050 return 1;
1051 a++,b++;
79072805
LW
1052 }
1053 return 0;
1054}
1055
8d063cd8
LW
1056/* copy a string to a safe spot */
1057
1058char *
a0d0e21e 1059savepv(sv)
79072805 1060char *sv;
8d063cd8 1061{
a687059c 1062 register char *newaddr;
8d063cd8 1063
79072805
LW
1064 New(902,newaddr,strlen(sv)+1,char);
1065 (void)strcpy(newaddr,sv);
8d063cd8
LW
1066 return newaddr;
1067}
1068
a687059c
LW
1069/* same thing but with a known length */
1070
1071char *
a0d0e21e 1072savepvn(sv, len)
79072805
LW
1073char *sv;
1074register I32 len;
a687059c
LW
1075{
1076 register char *newaddr;
1077
1078 New(903,newaddr,len+1,char);
79072805 1079 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW
1080 newaddr[len] = '\0'; /* is now */
1081 return newaddr;
1082}
1083
fc36a67e
PP
1084/* the SV for form() and mess() is not kept in an arena */
1085
1086static SV *
1087mess_alloc()
1088{
1089 SV *sv;
1090 XPVMG *any;
1091
1092 /* Create as PVMG now, to avoid any upgrading later */
1093 New(905, sv, 1, SV);
1094 Newz(905, any, 1, XPVMG);
1095 SvFLAGS(sv) = SVt_PVMG;
1096 SvANY(sv) = (void*)any;
1097 SvREFCNT(sv) = 1 << 30; /* practically infinite */
1098 return sv;
1099}
1100
a0d0e21e 1101#ifdef I_STDARG
8990e307 1102char *
46fc3d4c 1103form(const char* pat, ...)
a687059c
LW
1104#else
1105/*VARARGS0*/
de3bb511 1106char *
46fc3d4c 1107form(pat, va_alist)
71be2cbc 1108 const char *pat;
46fc3d4c 1109 va_dcl
8990e307
LW
1110#endif
1111{
46fc3d4c
PP
1112 va_list args;
1113#ifdef I_STDARG
1114 va_start(args, pat);
a687059c 1115#else
46fc3d4c 1116 va_start(args);
d48672a2 1117#endif
fc36a67e
PP
1118 if (!mess_sv)
1119 mess_sv = mess_alloc();
1120 sv_vsetpvfn(mess_sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
46fc3d4c 1121 va_end(args);
fc36a67e 1122 return SvPVX(mess_sv);
46fc3d4c 1123}
a687059c 1124
46fc3d4c
PP
1125char *
1126mess(pat, args)
1127 const char *pat;
1128 va_list *args;
1129{
1130 SV *sv;
1131 static char dgd[] = " during global destruction.\n";
1132
46fc3d4c 1133 if (!mess_sv)
fc36a67e 1134 mess_sv = mess_alloc();
46fc3d4c 1135 sv = mess_sv;
fc36a67e 1136 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1137 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1138 dTHR;
2304df62 1139 if (dirty)
46fc3d4c 1140 sv_catpv(sv, dgd);
2304df62 1141 else {
46fc3d4c 1142 if (curcop->cop_line)
fc36a67e 1143 sv_catpvf(sv, " at %_ line %ld",
46fc3d4c 1144 GvSV(curcop->cop_filegv), (long)curcop->cop_line);
c07a80fd
PP
1145 if (GvIO(last_in_gv) && IoLINES(GvIOp(last_in_gv))) {
1146 bool line_mode = (RsSIMPLE(rs) &&
1147 SvLEN(rs) == 1 && *SvPVX(rs) == '\n');
46fc3d4c
PP
1148 sv_catpvf(sv, ", <%s> %s %ld",
1149 last_in_gv == argvgv ? "" : GvNAME(last_in_gv),
1150 line_mode ? "line" : "chunk",
1151 (long)IoLINES(GvIOp(last_in_gv)));
2304df62 1152 }
46fc3d4c 1153 sv_catpv(sv, ".\n");
a687059c 1154 }
a687059c 1155 }
46fc3d4c 1156 return SvPVX(sv);
a687059c
LW
1157}
1158
ecfc5424 1159#ifdef I_STDARG
36477c24 1160OP *
71be2cbc 1161die(const char* pat, ...)
36477c24
PP
1162#else
1163/*VARARGS0*/
1164OP *
1165die(pat, va_alist)
71be2cbc 1166 const char *pat;
36477c24
PP
1167 va_dcl
1168#endif
1169{
5dc0d613 1170 dTHR;
36477c24
PP
1171 va_list args;
1172 char *message;
035902c7 1173 I32 oldrunlevel = runlevel;
36477c24
PP
1174 int was_in_eval = in_eval;
1175 HV *stash;
1176 GV *gv;
1177 CV *cv;
1178
d9f997d7 1179 DEBUG_L(PerlIO_printf(PerlIO_stderr(), "die: curstack = %p, mainstack= %p\n",
0f15f207 1180 curstack, mainstack));/*debug*/
36477c24
PP
1181 /* We have to switch back to mainstack or die_where may try to pop
1182 * the eval block from the wrong stack if die is being called from a
1183 * signal handler. - dkindred@cs.cmu.edu */
1184 if (curstack != mainstack) {
1185 dSP;
1186 SWITCHSTACK(curstack, mainstack);
1187 }
1188
1189#ifdef I_STDARG
1190 va_start(args, pat);
1191#else
1192 va_start(args);
1193#endif
1194 message = mess(pat, &args);
1195 va_end(args);
1196
d9f997d7 1197 DEBUG_L(PerlIO_printf(PerlIO_stderr(), "die: message = %s\ndiehook = %p\n",
0f15f207 1198 message, diehook));/*debug*/
1738f5c4
CS
1199 if (diehook) {
1200 /* sv_2cv might call croak() */
1201 SV *olddiehook = diehook;
1202 ENTER;
1203 SAVESPTR(diehook);
1204 diehook = Nullsv;
1205 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1206 LEAVE;
1207 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1208 dSP;
774d564b
PP
1209 SV *msg;
1210
1211 ENTER;
1212 msg = newSVpv(message, 0);
1213 SvREADONLY_on(msg);
1214 SAVEFREESV(msg);
1738f5c4
CS
1215
1216 PUSHMARK(sp);
1217 XPUSHs(msg);
1218 PUTBACK;
1219 perl_call_sv((SV*)cv, G_DISCARD);
1220
774d564b 1221 LEAVE;
1738f5c4 1222 }
36477c24
PP
1223 }
1224
1225 restartop = die_where(message);
d9f997d7 1226 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
0f15f207
MB
1227 "die: restartop = %p, was_in_eval = %d, oldrunlevel = %d\n",
1228 restartop, was_in_eval, oldrunlevel));/*debug*/
36477c24 1229 if ((!restartop && was_in_eval) || oldrunlevel > 1)
54310121 1230 JMPENV_JUMP(3);
36477c24
PP
1231 return restartop;
1232}
1233
1234#ifdef I_STDARG
79072805 1235void
71be2cbc 1236croak(const char* pat, ...)
463ee0b2 1237#else
8990e307
LW
1238/*VARARGS0*/
1239void
1240croak(pat, va_alist)
1241 char *pat;
1242 va_dcl
463ee0b2 1243#endif
a687059c 1244{
11343788 1245 dTHR;
a687059c 1246 va_list args;
de3bb511 1247 char *message;
748a9306
LW
1248 HV *stash;
1249 GV *gv;
1250 CV *cv;
a687059c 1251
a0d0e21e 1252#ifdef I_STDARG
8990e307
LW
1253 va_start(args, pat);
1254#else
a687059c 1255 va_start(args);
8990e307 1256#endif
2304df62 1257 message = mess(pat, &args);
a687059c 1258 va_end(args);
11343788 1259#ifdef USE_THREADS
d9f997d7 1260 DEBUG_L(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
11343788 1261#endif /* USE_THREADS */
20cec16a 1262 if (diehook) {
1738f5c4 1263 /* sv_2cv might call croak() */
20cec16a 1264 SV *olddiehook = diehook;
1738f5c4
CS
1265 ENTER;
1266 SAVESPTR(diehook);
1267 diehook = Nullsv;
20cec16a 1268 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS
1269 LEAVE;
1270 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1271 dSP;
774d564b
PP
1272 SV *msg;
1273
1274 ENTER;
1275 msg = newSVpv(message, 0);
1276 SvREADONLY_on(msg);
1277 SAVEFREESV(msg);
20cec16a
PP
1278
1279 PUSHMARK(sp);
1738f5c4 1280 XPUSHs(msg);
20cec16a
PP
1281 PUTBACK;
1282 perl_call_sv((SV*)cv, G_DISCARD);
36477c24 1283
774d564b 1284 LEAVE;
20cec16a 1285 }
748a9306 1286 }
a0d0e21e
LW
1287 if (in_eval) {
1288 restartop = die_where(message);
54310121 1289 JMPENV_JUMP(3);
a0d0e21e 1290 }
760ac839
LW
1291 PerlIO_puts(PerlIO_stderr(),message);
1292 (void)PerlIO_flush(PerlIO_stderr());
f86702cc 1293 my_failure_exit();
a687059c
LW
1294}
1295
8990e307 1296void
ecfc5424 1297#ifdef I_STDARG
71be2cbc 1298warn(const char* pat,...)
463ee0b2 1299#else
8990e307
LW
1300/*VARARGS0*/
1301warn(pat,va_alist)
71be2cbc 1302 const char *pat;
8990e307 1303 va_dcl
463ee0b2 1304#endif
a687059c
LW
1305{
1306 va_list args;
de3bb511 1307 char *message;
748a9306
LW
1308 HV *stash;
1309 GV *gv;
1310 CV *cv;
a687059c 1311
a0d0e21e 1312#ifdef I_STDARG
8990e307
LW
1313 va_start(args, pat);
1314#else
a687059c 1315 va_start(args);
8990e307 1316#endif
2304df62 1317 message = mess(pat, &args);
a687059c
LW
1318 va_end(args);
1319
20cec16a 1320 if (warnhook) {
1738f5c4 1321 /* sv_2cv might call warn() */
11343788 1322 dTHR;
20cec16a 1323 SV *oldwarnhook = warnhook;
1738f5c4
CS
1324 ENTER;
1325 SAVESPTR(warnhook);
1326 warnhook = Nullsv;
20cec16a 1327 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS
1328 LEAVE;
1329 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1330 dSP;
774d564b
PP
1331 SV *msg;
1332
1333 ENTER;
1334 msg = newSVpv(message, 0);
1335 SvREADONLY_on(msg);
1336 SAVEFREESV(msg);
1337
20cec16a 1338 PUSHMARK(sp);
774d564b 1339 XPUSHs(msg);
20cec16a
PP
1340 PUTBACK;
1341 perl_call_sv((SV*)cv, G_DISCARD);
774d564b
PP
1342
1343 LEAVE;
20cec16a
PP
1344 return;
1345 }
748a9306 1346 }
20cec16a 1347 PerlIO_puts(PerlIO_stderr(),message);
a687059c 1348#ifdef LEAKTEST
20cec16a 1349 DEBUG_L(xstat());
a687059c 1350#endif
20cec16a 1351 (void)PerlIO_flush(PerlIO_stderr());
a687059c 1352}
8d063cd8 1353
a0d0e21e 1354#ifndef VMS /* VMS' my_setenv() is in VMS.c */
3e3baf6d 1355#ifndef WIN32
8d063cd8 1356void
7c0587c8 1357my_setenv(nam,val)
8d063cd8
LW
1358char *nam, *val;
1359{
79072805 1360 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1361
fe14fcc3 1362 if (environ == origenviron) { /* need we copy environment? */
79072805
LW
1363 I32 j;
1364 I32 max;
fe14fcc3
LW
1365 char **tmpenv;
1366
de3bb511 1367 /*SUPPRESS 530*/
fe14fcc3
LW
1368 for (max = i; environ[max]; max++) ;
1369 New(901,tmpenv, max+2, char*);
1370 for (j=0; j<max; j++) /* copy environment */
a0d0e21e 1371 tmpenv[j] = savepv(environ[j]);
fe14fcc3
LW
1372 tmpenv[max] = Nullch;
1373 environ = tmpenv; /* tell exec where it is now */
1374 }
a687059c 1375 if (!val) {
e5ebf479 1376 Safefree(environ[i]);
a687059c
LW
1377 while (environ[i]) {
1378 environ[i] = environ[i+1];
1379 i++;
1380 }
1381 return;
1382 }
8d063cd8 1383 if (!environ[i]) { /* does not exist yet */
fe14fcc3 1384 Renew(environ, i+2, char*); /* just expand it a bit */
8d063cd8
LW
1385 environ[i+1] = Nullch; /* make sure it's null terminated */
1386 }
fe14fcc3
LW
1387 else
1388 Safefree(environ[i]);
a687059c 1389 New(904, environ[i], strlen(nam) + strlen(val) + 2, char);
62b28dd9 1390#ifndef MSDOS
a687059c 1391 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
62b28dd9
LW
1392#else
1393 /* MS-DOS requires environment variable names to be in uppercase */
fe14fcc3
LW
1394 /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but
1395 * some utilities and applications may break because they only look
1396 * for upper case strings. (Fixed strupr() bug here.)]
1397 */
1398 strcpy(environ[i],nam); strupr(environ[i]);
62b28dd9
LW
1399 (void)sprintf(environ[i] + strlen(nam),"=%s",val);
1400#endif /* MSDOS */
8d063cd8
LW
1401}
1402
3e3baf6d 1403#else /* if WIN32 */
68dc0745
PP
1404
1405void
1406my_setenv(nam,val)
1407char *nam, *val;
1408{
3e3baf6d
TB
1409
1410#ifdef USE_WIN32_RTL_ENV
1411
68dc0745
PP
1412 register char *envstr;
1413 STRLEN namlen = strlen(nam);
3e3baf6d
TB
1414 STRLEN vallen;
1415 char *oldstr = environ[setenv_getix(nam)];
1416
1417 /* putenv() has totally broken semantics in both the Borland
1418 * and Microsoft CRTLs. They either store the passed pointer in
1419 * the environment without making a copy, or make a copy and don't
1420 * free it. And on top of that, they dont free() old entries that
1421 * are being replaced/deleted. This means the caller must
1422 * free any old entries somehow, or we end up with a memory
1423 * leak every time my_setenv() is called. One might think
1424 * one could directly manipulate environ[], like the UNIX code
1425 * above, but direct changes to environ are not allowed when
1426 * calling putenv(), since the RTLs maintain an internal
1427 * *copy* of environ[]. Bad, bad, *bad* stink.
1428 * GSAR 97-06-07
1429 */
68dc0745 1430
3e3baf6d
TB
1431 if (!val) {
1432 if (!oldstr)
1433 return;
1434 val = "";
1435 vallen = 0;
1436 }
1437 else
1438 vallen = strlen(val);
fc36a67e 1439 New(904, envstr, namlen + vallen + 3, char);
68dc0745 1440 (void)sprintf(envstr,"%s=%s",nam,val);
3e3baf6d
TB
1441 (void)putenv(envstr);
1442 if (oldstr)
1443 Safefree(oldstr);
1444#ifdef _MSC_VER
1445 Safefree(envstr); /* MSVCRT leaks without this */
1446#endif
1447
1448#else /* !USE_WIN32_RTL_ENV */
1449
1450 /* The sane way to deal with the environment.
1451 * Has these advantages over putenv() & co.:
1452 * * enables us to store a truly empty value in the
1453 * environment (like in UNIX).
1454 * * we don't have to deal with RTL globals, bugs and leaks.
1455 * * Much faster.
1456 * Why you may want to enable USE_WIN32_RTL_ENV:
1457 * * environ[] and RTL functions will not reflect changes,
1458 * which might be an issue if extensions want to access
1459 * the env. via RTL. This cuts both ways, since RTL will
1460 * not see changes made by extensions that call the Win32
1461 * functions directly, either.
1462 * GSAR 97-06-07
1463 */
1464 SetEnvironmentVariable(nam,val);
1465
1466#endif
1467}
1468
1469#endif /* WIN32 */
1470
1471I32
1472setenv_getix(nam)
1473char *nam;
1474{
1475 register I32 i, len = strlen(nam);
1476
1477 for (i = 0; environ[i]; i++) {
1478 if (
1479#ifdef WIN32
1480 strnicmp(environ[i],nam,len) == 0
1481#else
1482 strnEQ(environ[i],nam,len)
1483#endif
1484 && environ[i][len] == '=')
1485 break; /* strnEQ must come first to avoid */
1486 } /* potential SEGV's */
1487 return i;
68dc0745
PP
1488}
1489
a0d0e21e 1490#endif /* !VMS */
378cc40b 1491
16d20bd9 1492#ifdef UNLINK_ALL_VERSIONS
79072805 1493I32
378cc40b
LW
1494unlnk(f) /* unlink all versions of a file */
1495char *f;
1496{
79072805 1497 I32 i;
378cc40b
LW
1498
1499 for (i = 0; unlink(f) >= 0; i++) ;
1500 return i ? 0 : -1;
1501}
1502#endif
1503
85e6fe83 1504#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 1505char *
7c0587c8 1506my_bcopy(from,to,len)
378cc40b
LW
1507register char *from;
1508register char *to;
79072805 1509register I32 len;
378cc40b
LW
1510{
1511 char *retval = to;
1512
7c0587c8
LW
1513 if (from - to >= 0) {
1514 while (len--)
1515 *to++ = *from++;
1516 }
1517 else {
1518 to += len;
1519 from += len;
1520 while (len--)
faf8582f 1521 *(--to) = *(--from);
7c0587c8 1522 }
378cc40b
LW
1523 return retval;
1524}
ffed7fef 1525#endif
378cc40b 1526
fc36a67e
PP
1527#ifndef HAS_MEMSET
1528void *
1529my_memset(loc,ch,len)
1530register char *loc;
1531register I32 ch;
1532register I32 len;
1533{
1534 char *retval = loc;
1535
1536 while (len--)
1537 *loc++ = ch;
1538 return retval;
1539}
1540#endif
1541
7c0587c8 1542#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 1543char *
7c0587c8 1544my_bzero(loc,len)
378cc40b 1545register char *loc;
79072805 1546register I32 len;
378cc40b
LW
1547{
1548 char *retval = loc;
1549
1550 while (len--)
1551 *loc++ = 0;
1552 return retval;
1553}
1554#endif
7c0587c8 1555
36477c24 1556#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 1557I32
7c0587c8 1558my_memcmp(s1,s2,len)
36477c24
PP
1559char *s1;
1560char *s2;
79072805 1561register I32 len;
7c0587c8 1562{
36477c24
PP
1563 register U8 *a = (U8 *)s1;
1564 register U8 *b = (U8 *)s2;
79072805 1565 register I32 tmp;
7c0587c8
LW
1566
1567 while (len--) {
36477c24 1568 if (tmp = *a++ - *b++)
7c0587c8
LW
1569 return tmp;
1570 }
1571 return 0;
1572}
36477c24 1573#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 1574
4633a7c4 1575#if defined(I_STDARG) || defined(I_VARARGS)
fe14fcc3 1576#ifndef HAS_VPRINTF
a687059c 1577
85e6fe83 1578#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1579char *
1580#else
1581int
1582#endif
1583vsprintf(dest, pat, args)
71be2cbc
PP
1584char *dest;
1585const char *pat;
1586char *args;
a687059c
LW
1587{
1588 FILE fakebuf;
1589
1590 fakebuf._ptr = dest;
1591 fakebuf._cnt = 32767;
35c8bce7
LW
1592#ifndef _IOSTRG
1593#define _IOSTRG 0
1594#endif
a687059c
LW
1595 fakebuf._flag = _IOWRT|_IOSTRG;
1596 _doprnt(pat, args, &fakebuf); /* what a kludge */
1597 (void)putc('\0', &fakebuf);
85e6fe83 1598#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1599 return(dest);
1600#else
1601 return 0; /* perl doesn't use return value */
1602#endif
1603}
1604
fe14fcc3 1605#endif /* HAS_VPRINTF */
4633a7c4 1606#endif /* I_VARARGS || I_STDARGS */
a687059c
LW
1607
1608#ifdef MYSWAP
ffed7fef 1609#if BYTEORDER != 0x4321
a687059c 1610short
748a9306 1611#ifndef CAN_PROTOTYPE
a687059c
LW
1612my_swap(s)
1613short s;
748a9306
LW
1614#else
1615my_swap(short s)
1616#endif
a687059c
LW
1617{
1618#if (BYTEORDER & 1) == 0
1619 short result;
1620
1621 result = ((s & 255) << 8) + ((s >> 8) & 255);
1622 return result;
1623#else
1624 return s;
1625#endif
1626}
1627
1628long
748a9306
LW
1629#ifndef CAN_PROTOTYPE
1630my_htonl(l)
a687059c 1631register long l;
748a9306
LW
1632#else
1633my_htonl(long l)
1634#endif
a687059c
LW
1635{
1636 union {
1637 long result;
ffed7fef 1638 char c[sizeof(long)];
a687059c
LW
1639 } u;
1640
ffed7fef 1641#if BYTEORDER == 0x1234
a687059c
LW
1642 u.c[0] = (l >> 24) & 255;
1643 u.c[1] = (l >> 16) & 255;
1644 u.c[2] = (l >> 8) & 255;
1645 u.c[3] = l & 255;
1646 return u.result;
1647#else
ffed7fef 1648#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1649 croak("Unknown BYTEORDER\n");
a687059c 1650#else
79072805
LW
1651 register I32 o;
1652 register I32 s;
a687059c 1653
ffed7fef
LW
1654 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1655 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW
1656 }
1657 return u.result;
1658#endif
1659#endif
1660}
1661
1662long
748a9306
LW
1663#ifndef CAN_PROTOTYPE
1664my_ntohl(l)
a687059c 1665register long l;
748a9306
LW
1666#else
1667my_ntohl(long l)
1668#endif
a687059c
LW
1669{
1670 union {
1671 long l;
ffed7fef 1672 char c[sizeof(long)];
a687059c
LW
1673 } u;
1674
ffed7fef 1675#if BYTEORDER == 0x1234
a687059c
LW
1676 u.c[0] = (l >> 24) & 255;
1677 u.c[1] = (l >> 16) & 255;
1678 u.c[2] = (l >> 8) & 255;
1679 u.c[3] = l & 255;
1680 return u.l;
1681#else
ffed7fef 1682#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1683 croak("Unknown BYTEORDER\n");
a687059c 1684#else
79072805
LW
1685 register I32 o;
1686 register I32 s;
a687059c
LW
1687
1688 u.l = l;
1689 l = 0;
ffed7fef
LW
1690 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1691 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW
1692 }
1693 return l;
1694#endif
1695#endif
1696}
1697
ffed7fef 1698#endif /* BYTEORDER != 0x4321 */
988174c1
LW
1699#endif /* MYSWAP */
1700
1701/*
1702 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
1703 * If these functions are defined,
1704 * the BYTEORDER is neither 0x1234 nor 0x4321.
1705 * However, this is not assumed.
1706 * -DWS
1707 */
1708
1709#define HTOV(name,type) \
1710 type \
1711 name (n) \
1712 register type n; \
1713 { \
1714 union { \
1715 type value; \
1716 char c[sizeof(type)]; \
1717 } u; \
79072805
LW
1718 register I32 i; \
1719 register I32 s; \
988174c1
LW
1720 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1721 u.c[i] = (n >> s) & 0xFF; \
1722 } \
1723 return u.value; \
1724 }
1725
1726#define VTOH(name,type) \
1727 type \
1728 name (n) \
1729 register type n; \
1730 { \
1731 union { \
1732 type value; \
1733 char c[sizeof(type)]; \
1734 } u; \
79072805
LW
1735 register I32 i; \
1736 register I32 s; \
988174c1
LW
1737 u.value = n; \
1738 n = 0; \
1739 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1740 n += (u.c[i] & 0xFF) << s; \
1741 } \
1742 return n; \
1743 }
1744
1745#if defined(HAS_HTOVS) && !defined(htovs)
1746HTOV(htovs,short)
1747#endif
1748#if defined(HAS_HTOVL) && !defined(htovl)
1749HTOV(htovl,long)
1750#endif
1751#if defined(HAS_VTOHS) && !defined(vtohs)
1752VTOH(vtohs,short)
1753#endif
1754#if defined(HAS_VTOHL) && !defined(vtohl)
1755VTOH(vtohl,long)
1756#endif
a687059c 1757
5f05dabc
PP
1758 /* VMS' my_popen() is in VMS.c, same with OS/2. */
1759#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS)
760ac839 1760PerlIO *
79072805 1761my_popen(cmd,mode)
a687059c
LW
1762char *cmd;
1763char *mode;
1764{
1765 int p[2];
79072805
LW
1766 register I32 this, that;
1767 register I32 pid;
1768 SV *sv;
1738f5c4 1769 I32 doexec = strNE(cmd,"-");
a687059c 1770
ddcf38b7
IZ
1771#ifdef OS2
1772 if (doexec) {
1773 return my_syspopen(cmd,mode);
1774 }
1775#endif
a687059c
LW
1776 if (pipe(p) < 0)
1777 return Nullfp;
1778 this = (*mode == 'w');
1779 that = !this;
bbce6d69
PP
1780 if (doexec && tainting) {
1781 taint_env();
1782 taint_proper("Insecure %s%s", "EXEC");
d48672a2 1783 }
a687059c
LW
1784 while ((pid = (doexec?vfork():fork())) < 0) {
1785 if (errno != EAGAIN) {
1786 close(p[this]);
1787 if (!doexec)
463ee0b2 1788 croak("Can't fork");
a687059c
LW
1789 return Nullfp;
1790 }
1791 sleep(5);
1792 }
1793 if (pid == 0) {
79072805
LW
1794 GV* tmpgv;
1795
a687059c
LW
1796#define THIS that
1797#define THAT this
1798 close(p[THAT]);
1799 if (p[THIS] != (*mode == 'r')) {
1800 dup2(p[THIS], *mode == 'r');
1801 close(p[THIS]);
1802 }
1803 if (doexec) {
a0d0e21e 1804#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW
1805 int fd;
1806
1807#ifndef NOFILE
1808#define NOFILE 20
1809#endif
d48672a2 1810 for (fd = maxsysfd + 1; fd < NOFILE; fd++)
ae986130
LW
1811 close(fd);
1812#endif
a687059c
LW
1813 do_exec(cmd); /* may or may not use the shell */
1814 _exit(1);
1815 }
de3bb511 1816 /*SUPPRESS 560*/
85e6fe83 1817 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
1e422769 1818 sv_setiv(GvSV(tmpgv), (IV)getpid());
9f68db38 1819 forkprocess = 0;
463ee0b2 1820 hv_clear(pidstatus); /* we have no children */
a687059c
LW
1821 return Nullfp;
1822#undef THIS
1823#undef THAT
1824 }
62b28dd9 1825 do_execfree(); /* free any memory malloced by child on vfork */
a687059c 1826 close(p[that]);
62b28dd9
LW
1827 if (p[that] < p[this]) {
1828 dup2(p[this], p[that]);
1829 close(p[this]);
1830 p[this] = p[that];
1831 }
79072805 1832 sv = *av_fetch(fdpid,p[this],TRUE);
a0d0e21e 1833 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 1834 SvIVX(sv) = pid;
a687059c 1835 forkprocess = pid;
760ac839 1836 return PerlIO_fdopen(p[this], mode);
a687059c 1837}
7c0587c8 1838#else
55497cff 1839#if defined(atarist) || defined(DJGPP)
7c0587c8 1840FILE *popen();
760ac839 1841PerlIO *
79072805 1842my_popen(cmd,mode)
7c0587c8
LW
1843char *cmd;
1844char *mode;
1845{
760ac839 1846 /* Needs work for PerlIO ! */
55497cff
PP
1847 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
1848 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW
1849}
1850#endif
1851
1852#endif /* !DOSISH */
a687059c 1853
748a9306 1854#ifdef DUMP_FDS
79072805 1855dump_fds(s)
ae986130
LW
1856char *s;
1857{
1858 int fd;
1859 struct stat tmpstatbuf;
1860
760ac839 1861 PerlIO_printf(PerlIO_stderr(),"%s", s);
ae986130 1862 for (fd = 0; fd < 32; fd++) {
a0d0e21e 1863 if (Fstat(fd,&tmpstatbuf) >= 0)
760ac839 1864 PerlIO_printf(PerlIO_stderr()," %d",fd);
ae986130 1865 }
760ac839 1866 PerlIO_printf(PerlIO_stderr(),"\n");
ae986130
LW
1867}
1868#endif
1869
fe14fcc3 1870#ifndef HAS_DUP2
fec02dd3 1871int
a687059c
LW
1872dup2(oldfd,newfd)
1873int oldfd;
1874int newfd;
1875{
a0d0e21e 1876#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD
1877 if (oldfd == newfd)
1878 return oldfd;
62b28dd9 1879 close(newfd);
fec02dd3 1880 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 1881#else
fc36a67e
PP
1882#define DUP2_MAX_FDS 256
1883 int fdtmp[DUP2_MAX_FDS];
79072805 1884 I32 fdx = 0;
ae986130
LW
1885 int fd;
1886
fe14fcc3 1887 if (oldfd == newfd)
fec02dd3 1888 return oldfd;
a687059c 1889 close(newfd);
fc36a67e
PP
1890 /* good enough for low fd's... */
1891 while ((fd = dup(oldfd)) != newfd && fd >= 0) {
1892 if (fdx >= DUP2_MAX_FDS) {
1893 close(fd);
1894 fd = -1;
1895 break;
1896 }
ae986130 1897 fdtmp[fdx++] = fd;
fc36a67e 1898 }
ae986130
LW
1899 while (fdx > 0)
1900 close(fdtmp[--fdx]);
fec02dd3 1901 return fd;
62b28dd9 1902#endif
a687059c
LW
1903}
1904#endif
1905
ff68c719
PP
1906
1907#ifdef HAS_SIGACTION
1908
1909Sighandler_t
1910rsignal(signo, handler)
1911int signo;
1912Sighandler_t handler;
1913{
1914 struct sigaction act, oact;
1915
1916 act.sa_handler = handler;
1917 sigemptyset(&act.sa_mask);
1918 act.sa_flags = 0;
1919#ifdef SA_RESTART
1920 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
1921#endif
1922 if (sigaction(signo, &act, &oact) == -1)
36477c24 1923 return SIG_ERR;
ff68c719 1924 else
36477c24 1925 return oact.sa_handler;
ff68c719
PP
1926}
1927
1928Sighandler_t
1929rsignal_state(signo)
1930int signo;
1931{
1932 struct sigaction oact;
1933
1934 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
1935 return SIG_ERR;
1936 else
1937 return oact.sa_handler;
1938}
1939
1940int
1941rsignal_save(signo, handler, save)
1942int signo;
1943Sighandler_t handler;
1944Sigsave_t *save;
1945{
1946 struct sigaction act;
1947
1948 act.sa_handler = handler;
1949 sigemptyset(&act.sa_mask);
1950 act.sa_flags = 0;
1951#ifdef SA_RESTART
1952 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
1953#endif
1954 return sigaction(signo, &act, save);
1955}
1956
1957int
1958rsignal_restore(signo, save)
1959int signo;
1960Sigsave_t *save;
1961{
1962 return sigaction(signo, save, (struct sigaction *)NULL);
1963}
1964
1965#else /* !HAS_SIGACTION */
1966
1967Sighandler_t
1968rsignal(signo, handler)
1969int signo;
1970Sighandler_t handler;
1971{
1972 return signal(signo, handler);
1973}
1974
1975static int sig_trapped;
1976
1977static
1978Signal_t
1979sig_trap(signo)
1980int signo;
1981{
1982 sig_trapped++;
1983}
1984
1985Sighandler_t
1986rsignal_state(signo)
1987int signo;
1988{
1989 Sighandler_t oldsig;
1990
1991 sig_trapped = 0;
1992 oldsig = signal(signo, sig_trap);
1993 signal(signo, oldsig);
1994 if (sig_trapped)
1995 kill(getpid(), signo);
1996 return oldsig;
1997}
1998
1999int
2000rsignal_save(signo, handler, save)
2001int signo;
2002Sighandler_t handler;
2003Sigsave_t *save;
2004{
2005 *save = signal(signo, handler);
2006 return (*save == SIG_ERR) ? -1 : 0;
2007}
2008
2009int
36477c24 2010rsignal_restore(signo, save)
ff68c719
PP
2011int signo;
2012Sigsave_t *save;
2013{
2014 return (signal(signo, *save) == SIG_ERR) ? -1 : 0;
2015}
2016
2017#endif /* !HAS_SIGACTION */
2018
5f05dabc
PP
2019 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
2020#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS)
79072805
LW
2021I32
2022my_pclose(ptr)
760ac839 2023PerlIO *ptr;
a687059c 2024{
ff68c719 2025 Sigsave_t hstat, istat, qstat;
a687059c 2026 int status;
a0d0e21e 2027 SV **svp;
20188a90 2028 int pid;
03136e13
CS
2029 bool close_failed;
2030 int saved_errno;
2031#ifdef VMS
2032 int saved_vaxc_errno;
2033#endif
a687059c 2034
760ac839 2035 svp = av_fetch(fdpid,PerlIO_fileno(ptr),TRUE);
748a9306 2036 pid = (int)SvIVX(*svp);
a0d0e21e
LW
2037 SvREFCNT_dec(*svp);
2038 *svp = &sv_undef;
ddcf38b7
IZ
2039#ifdef OS2
2040 if (pid == -1) { /* Opened by popen. */
2041 return my_syspclose(ptr);
2042 }
2043#endif
03136e13
CS
2044 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2045 saved_errno = errno;
2046#ifdef VMS
2047 saved_vaxc_errno = vaxc$errno;
2048#endif
2049 }
7c0587c8
LW
2050#ifdef UTS
2051 if(kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
2052#endif
ff68c719
PP
2053 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2054 rsignal_save(SIGINT, SIG_IGN, &istat);
2055 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306
LW
2056 do {
2057 pid = wait4pid(pid, &status, 0);
2058 } while (pid == -1 && errno == EINTR);
ff68c719
PP
2059 rsignal_restore(SIGHUP, &hstat);
2060 rsignal_restore(SIGINT, &istat);
2061 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS
2062 if (close_failed) {
2063 SETERRNO(saved_errno, saved_vaxc_errno);
2064 return -1;
2065 }
2066 return(pid < 0 ? pid : status == 0 ? 0 : (errno = 0, status));
20188a90 2067}
4633a7c4
LW
2068#endif /* !DOSISH */
2069
2070#if !defined(DOSISH) || defined(OS2)
79072805 2071I32
20188a90
LW
2072wait4pid(pid,statusp,flags)
2073int pid;
2074int *statusp;
2075int flags;
2076{
79072805
LW
2077 SV *sv;
2078 SV** svp;
fc36a67e 2079 char spid[TYPE_CHARS(int)];
20188a90
LW
2080
2081 if (!pid)
2082 return -1;
20188a90
LW
2083 if (pid > 0) {
2084 sprintf(spid, "%d", pid);
79072805
LW
2085 svp = hv_fetch(pidstatus,spid,strlen(spid),FALSE);
2086 if (svp && *svp != &sv_undef) {
463ee0b2 2087 *statusp = SvIVX(*svp);
748a9306 2088 (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2089 return pid;
2090 }
2091 }
2092 else {
79072805 2093 HE *entry;
20188a90 2094
79072805
LW
2095 hv_iterinit(pidstatus);
2096 if (entry = hv_iternext(pidstatus)) {
a0d0e21e 2097 pid = atoi(hv_iterkey(entry,(I32*)statusp));
79072805 2098 sv = hv_iterval(pidstatus,entry);
463ee0b2 2099 *statusp = SvIVX(sv);
20188a90 2100 sprintf(spid, "%d", pid);
748a9306 2101 (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2102 return pid;
2103 }
2104 }
79072805 2105#ifdef HAS_WAITPID
367f3c24
IZ
2106# ifdef HAS_WAITPID_RUNTIME
2107 if (!HAS_WAITPID_RUNTIME)
2108 goto hard_way;
2109# endif
79072805 2110 return waitpid(pid,statusp,flags);
367f3c24
IZ
2111#endif
2112#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2113 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ
2114#endif
2115#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2116 hard_way:
a0d0e21e
LW
2117 {
2118 I32 result;
2119 if (flags)
2120 croak("Can't do waitpid with flags");
2121 else {
2122 while ((result = wait(statusp)) != pid && pid > 0 && result >= 0)
2123 pidgone(result,*statusp);
2124 if (result < 0)
2125 *statusp = -1;
2126 }
2127 return result;
a687059c
LW
2128 }
2129#endif
a687059c 2130}
7c0587c8 2131#endif /* !DOSISH */
a687059c 2132
7c0587c8 2133void
de3bb511 2134/*SUPPRESS 590*/
a687059c
LW
2135pidgone(pid,status)
2136int pid;
2137int status;
2138{
79072805 2139 register SV *sv;
fc36a67e 2140 char spid[TYPE_CHARS(int)];
a687059c 2141
20188a90 2142 sprintf(spid, "%d", pid);
79072805 2143 sv = *hv_fetch(pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2144 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2145 SvIVX(sv) = status;
20188a90 2146 return;
a687059c
LW
2147}
2148
55497cff 2149#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2150int pclose();
ddcf38b7
IZ
2151#ifdef HAS_FORK
2152int /* Cannot prototype with I32
2153 in os2ish.h. */
2154my_syspclose(ptr)
2155#else
79072805
LW
2156I32
2157my_pclose(ptr)
ddcf38b7 2158#endif
760ac839 2159PerlIO *ptr;
a687059c 2160{
760ac839
LW
2161 /* Needs work for PerlIO ! */
2162 FILE *f = PerlIO_findFILE(ptr);
2163 I32 result = pclose(f);
2164 PerlIO_releaseFILE(ptr,f);
2165 return result;
a687059c 2166}
7c0587c8 2167#endif
9f68db38
LW
2168
2169void
2170repeatcpy(to,from,len,count)
2171register char *to;
2172register char *from;
79072805
LW
2173I32 len;
2174register I32 count;
9f68db38 2175{
79072805 2176 register I32 todo;
9f68db38
LW
2177 register char *frombase = from;
2178
2179 if (len == 1) {
2180 todo = *from;
2181 while (count-- > 0)
2182 *to++ = todo;
2183 return;
2184 }
2185 while (count-- > 0) {
2186 for (todo = len; todo > 0; todo--) {
2187 *to++ = *from++;
2188 }
2189 from = frombase;
2190 }
2191}
0f85fab0
LW
2192
2193#ifndef CASTNEGFLOAT
463ee0b2 2194U32
79072805 2195cast_ulong(f)
0f85fab0
LW
2196double f;
2197{
2198 long along;
2199
27e2fb84 2200#if CASTFLAGS & 2
34de22dd
LW
2201# define BIGDOUBLE 2147483648.0
2202 if (f >= BIGDOUBLE)
2203 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2204#endif
0f85fab0
LW
2205 if (f >= 0.0)
2206 return (unsigned long)f;
2207 along = (long)f;
2208 return (unsigned long)along;
2209}
ed6116ce
LW
2210# undef BIGDOUBLE
2211#endif
2212
2213#ifndef CASTI32
5d94fbed 2214
5d94fbed
AD
2215/* Unfortunately, on some systems the cast_uv() function doesn't
2216 work with the system-supplied definition of ULONG_MAX. The
2217 comparison (f >= ULONG_MAX) always comes out true. It must be a
2218 problem with the compiler constant folding.
2219
2220 In any case, this workaround should be fine on any two's complement
2221 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2222 ccflags.
2223 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2224*/
1eb770ff
PP
2225
2226/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2227 of LONG_(MIN/MAX).
2228 -- Kenneth Albanowski <kjahds@kjahds.com>
2229*/
2230
20cec16a
PP
2231#ifndef MY_UV_MAX
2232# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD
2233#endif
2234
ed6116ce
LW
2235I32
2236cast_i32(f)
2237double f;
2238{
20cec16a
PP
2239 if (f >= I32_MAX)
2240 return (I32) I32_MAX;
2241 if (f <= I32_MIN)
2242 return (I32) I32_MIN;
ed6116ce
LW
2243 return (I32) f;
2244}
a0d0e21e
LW
2245
2246IV
2247cast_iv(f)
2248double f;
2249{
20cec16a
PP
2250 if (f >= IV_MAX)
2251 return (IV) IV_MAX;
2252 if (f <= IV_MIN)
2253 return (IV) IV_MIN;
a0d0e21e
LW
2254 return (IV) f;
2255}
5d94fbed
AD
2256
2257UV
2258cast_uv(f)
2259double f;
2260{
20cec16a
PP
2261 if (f >= MY_UV_MAX)
2262 return (UV) MY_UV_MAX;
5d94fbed
AD
2263 return (UV) f;
2264}
2265
0f85fab0 2266#endif
62b28dd9 2267
fe14fcc3 2268#ifndef HAS_RENAME
79072805 2269I32
62b28dd9
LW
2270same_dirent(a,b)
2271char *a;
2272char *b;
2273{
93a17b20
LW
2274 char *fa = strrchr(a,'/');
2275 char *fb = strrchr(b,'/');
62b28dd9
LW
2276 struct stat tmpstatbuf1;
2277 struct stat tmpstatbuf2;
46fc3d4c 2278 SV *tmpsv = sv_newmortal();
62b28dd9
LW
2279
2280 if (fa)
2281 fa++;
2282 else
2283 fa = a;
2284 if (fb)
2285 fb++;
2286 else
2287 fb = b;
2288 if (strNE(a,b))
2289 return FALSE;
2290 if (fa == a)
46fc3d4c 2291 sv_setpv(tmpsv, ".");
62b28dd9 2292 else
46fc3d4c
PP
2293 sv_setpvn(tmpsv, a, fa - a);
2294 if (Stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW
2295 return FALSE;
2296 if (fb == b)
46fc3d4c 2297 sv_setpv(tmpsv, ".");
62b28dd9 2298 else
46fc3d4c
PP
2299 sv_setpvn(tmpsv, b, fb - b);
2300 if (Stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW
2301 return FALSE;
2302 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2303 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2304}
fe14fcc3
LW
2305#endif /* !HAS_RENAME */
2306
55497cff 2307UV
79072805 2308scan_oct(start, len, retlen)
fe14fcc3 2309char *start;
79072805
LW
2310I32 len;
2311I32 *retlen;
fe14fcc3
LW
2312{
2313 register char *s = start;
55497cff
PP
2314 register UV retval = 0;
2315 bool overflowed = FALSE;
fe14fcc3 2316
748a9306 2317 while (len && *s >= '0' && *s <= '7') {
55497cff
PP
2318 register UV n = retval << 3;
2319 if (!overflowed && (n >> 3) != retval) {
2320 warn("Integer overflow in octal number");
2321 overflowed = TRUE;
2322 }
2323 retval = n | (*s++ - '0');
748a9306 2324 len--;
fe14fcc3 2325 }
748a9306
LW
2326 if (dowarn && len && (*s == '8' || *s == '9'))
2327 warn("Illegal octal digit ignored");
fe14fcc3
LW
2328 *retlen = s - start;
2329 return retval;
2330}
2331
71be2cbc 2332UV
79072805 2333scan_hex(start, len, retlen)
fe14fcc3 2334char *start;
79072805
LW
2335I32 len;
2336I32 *retlen;
fe14fcc3
LW
2337{
2338 register char *s = start;
55497cff
PP
2339 register UV retval = 0;
2340 bool overflowed = FALSE;
fe14fcc3
LW
2341 char *tmp;
2342
93a17b20 2343 while (len-- && *s && (tmp = strchr(hexdigit, *s))) {
55497cff
PP
2344 register UV n = retval << 4;
2345 if (!overflowed && (n >> 4) != retval) {
2346 warn("Integer overflow in hex number");
2347 overflowed = TRUE;
2348 }
2349 retval = n | (tmp - hexdigit) & 15;
fe14fcc3
LW
2350 s++;
2351 }
2352 *retlen = s - start;
2353 return retval;
2354}
760ac839 2355
11343788 2356#ifdef USE_THREADS
12ca11f6
MB
2357#ifdef FAKE_THREADS
2358/* Very simplistic scheduler for now */
2359void
2360schedule(void)
2361{
c7848ba1 2362 thr = thr->i.next_run;
12ca11f6
MB
2363}
2364
2365void
2366perl_cond_init(cp)
2367perl_cond *cp;
2368{
2369 *cp = 0;
2370}
2371
2372void
2373perl_cond_signal(cp)
2374perl_cond *cp;
2375{
2376 perl_thread t;
2377 perl_cond cond = *cp;
2378
2379 if (!cond)
2380 return;
2381 t = cond->thread;
2382 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
2383 t->i.next_run = thr->i.next_run;
2384 thr->i.next_run->i.prev_run = t;
2385 t->i.prev_run = thr;
2386 thr->i.next_run = t;
2387 thr->i.wait_queue = 0;
12ca11f6
MB
2388 /* Remove from the wait queue */
2389 *cp = cond->next;
2390 Safefree(cond);
2391}
2392
2393void
2394perl_cond_broadcast(cp)
2395perl_cond *cp;
2396{
2397 perl_thread t;
2398 perl_cond cond, cond_next;
2399
2400 for (cond = *cp; cond; cond = cond_next) {
2401 t = cond->thread;
2402 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
2403 t->i.next_run = thr->i.next_run;
2404 thr->i.next_run->i.prev_run = t;
2405 t->i.prev_run = thr;
2406 thr->i.next_run = t;
2407 thr->i.wait_queue = 0;
12ca11f6
MB
2408 /* Remove from the wait queue */
2409 cond_next = cond->next;
2410 Safefree(cond);
2411 }
2412 *cp = 0;
2413}
2414
2415void
2416perl_cond_wait(cp)
2417perl_cond *cp;
2418{
2419 perl_cond cond;
2420
c7848ba1 2421 if (thr->i.next_run == thr)
12ca11f6
MB
2422 croak("panic: perl_cond_wait called by last runnable thread");
2423
0f15f207 2424 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB
2425 cond->thread = thr;
2426 cond->next = *cp;
2427 *cp = cond;
c7848ba1 2428 thr->i.wait_queue = cond;
12ca11f6 2429 /* Remove ourselves from runnable queue */
c7848ba1
MB
2430 thr->i.next_run->i.prev_run = thr->i.prev_run;
2431 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB
2432}
2433#endif /* FAKE_THREADS */
2434
11343788
MB
2435#ifdef OLD_PTHREADS_API
2436struct thread *
2437getTHR _((void))
2438{
2439 pthread_addr_t t;
2440
2441 if (pthread_getspecific(thr_key, &t))
2442 croak("panic: pthread_getspecific");
2443 return (struct thread *) t;
2444}
2445#endif /* OLD_PTHREADS_API */
f93b4edd
MB
2446
2447MAGIC *
2448condpair_magic(sv)
2449SV *sv;
2450{
2451 MAGIC *mg;
2452
2453 SvUPGRADE(sv, SVt_PVMG);
2454 mg = mg_find(sv, 'm');
2455 if (!mg) {
2456 condpair_t *cp;
2457
2458 New(53, cp, 1, condpair_t);
2459 MUTEX_INIT(&cp->mutex);
2460 COND_INIT(&cp->owner_cond);
2461 COND_INIT(&cp->cond);
2462 cp->owner = 0;
2463 MUTEX_LOCK(&sv_mutex);
2464 mg = mg_find(sv, 'm');
2465 if (mg) {
2466 /* someone else beat us to initialising it */
2467 MUTEX_UNLOCK(&sv_mutex);
2468 MUTEX_DESTROY(&cp->mutex);
2469 COND_DESTROY(&cp->owner_cond);
2470 COND_DESTROY(&cp->cond);
2471 Safefree(cp);
2472 }
2473 else {
2474 sv_magic(sv, Nullsv, 'm', 0, 0);
2475 mg = SvMAGIC(sv);
2476 mg->mg_ptr = (char *)cp;
2477 mg->mg_len = sizeof(cp);
2478 MUTEX_UNLOCK(&sv_mutex);
bc1f4c86 2479 DEBUG_L(WITH_THR(PerlIO_printf(PerlIO_stderr(),
c7848ba1 2480 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB
2481 }
2482 }
2483 return mg;
2484}
a863c7d1
MB
2485
2486/*
2487 * Make a new perl thread structure using t as a prototype. If t is NULL
2488 * then this is the initial main thread and we have to bootstrap carefully.
2489 * Some of the fields for the new thread are copied from the prototype
2490 * thread, t, so t should not be running in perl at the time this function
2491 * is called. The usual case, where t is the thread calling new_struct_thread,
2492 * clearly satisfies this constraint.
2493 */
2494struct thread *
2495new_struct_thread(t)
2496struct thread *t;
2497{
2498 struct thread *thr;
2499 XPV *xpv;
2500 SV *sv;
2501
2502 Newz(53, thr, 1, struct thread);
2503 cvcache = newHV();
2504 curcop = &compiling;
554b3eca 2505 thr->magicals = newAV();
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2506 thr->specific = newAV();
2507 thr->flags = THRf_R_JOINABLE;
2508 MUTEX_INIT(&thr->mutex);
2509 if (t) {
2510 oursv = newSVpv("", 0);
2511 SvGROW(oursv, sizeof(struct thread) + 1);
2512 SvCUR_set(oursv, sizeof(struct thread));
2513 thr = (struct thread *) SvPVX(sv);
2514 } else {
2515 /* Handcraft thrsv similarly to mess_sv */
2516 New(53, thrsv, 1, SV);
2517 Newz(53, xpv, 1, XPV);
2518 SvFLAGS(thrsv) = SVt_PV;
2519 SvANY(thrsv) = (void*)xpv;
2520 SvREFCNT(thrsv) = 1 << 30; /* practically infinite */
2521 SvPVX(thrsv) = (char*)thr;
2522 SvCUR_set(thrsv, sizeof(thr));
2523 SvLEN_set(thrsv, sizeof(thr));
2524 *SvEND(thrsv) = '\0'; /* in the trailing_nul field */
2525 oursv = thrsv;
2526 }
2527 if (t) {
2528 curcop = t->Tcurcop; /* XXX As good a guess as any? */
2529 defstash = t->Tdefstash; /* XXX maybe these should */
2530 curstash = t->Tcurstash; /* always be set to main? */
2531 /* top_env? */
2532 /* runlevel */
2533 tainted = t->Ttainted;
2534 curpm = t->Tcurpm; /* XXX No PMOP ref count */
2535 nrs = newSVsv(t->Tnrs);
2536 rs = newSVsv(t->Trs);
2537 last_in_gv = (GV*)SvREFCNT_inc(t->Tlast_in_gv);
2538 ofslen = t->Tofslen;
2539 ofs = savepvn(t->Tofs, ofslen);
2540 defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
2541 chopset = t->Tchopset;
2542 formtarget = newSVsv(t->Tformtarget);
2543 bodytarget = newSVsv(t->Tbodytarget);
2544 toptarget = newSVsv(t->Ttoptarget);
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2545 } else {
2546 curcop = &compiling;
2547 chopset = " \n-";
2548 }
2549 MUTEX_LOCK(&threads_mutex);
2550 nthreads++;
2551 thr->tid = threadnum++;
2552 if (t) {
2553 thr->next = t->next;
2554 thr->prev = t;
2555 t->next = thr;
2556 thr->next->prev = thr;
2557 } else {
2558 thr->next = thr;
2559 thr->prev = thr;
2560 }
2561 MUTEX_UNLOCK(&threads_mutex);
2562
2563#ifdef HAVE_THREAD_INTERN
2564 init_thread_intern(thr);
2565#else
2566 thr->self = pthread_self();
2567#endif /* HAVE_THREAD_INTERN */
2568 SET_THR(thr);
2569 if (!t) {
2570 /*
2571 * These must come after the SET_THR because sv_setpvn does
2572 * SvTAINT and the taint fields require dTHR.
2573 */
2574 toptarget = NEWSV(0,0);
2575 sv_upgrade(toptarget, SVt_PVFM);
2576 sv_setpvn(toptarget, "", 0);
2577 bodytarget = NEWSV(0,0);
2578 sv_upgrade(bodytarget, SVt_PVFM);
2579 sv_setpvn(bodytarget, "", 0);
2580 formtarget = bodytarget;
2581 }
2582 return thr;
2583}
11343788 2584#endif /* USE_THREADS */
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2585
2586#ifdef HUGE_VAL
2587/*
2588 * This hack is to force load of "huge" support from libm.a
2589 * So it is in perl for (say) POSIX to use.
2590 * Needed for SunOS with Sun's 'acc' for example.
2591 */
2592double
2593Perl_huge()
2594{
2595 return HUGE_VAL;
2596}
2597#endif