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[perl5.git] / util.c
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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
f0f333f4 74safemalloc(MEM_SIZE size)
8d063cd8 75{
bd4080b3 76 Malloc_t ptr;
55497cff 77#ifdef HAS_64K_LIMIT
62b28dd9 78 if (size > 0xffff) {
760ac839 79 PerlIO_printf(PerlIO_stderr(), "Allocation too large: %lx\n", size) FLUSH;
79072805 80 my_exit(1);
62b28dd9 81 }
55497cff 82#endif /* HAS_64K_LIMIT */
34de22dd
LW
83#ifdef DEBUGGING
84 if ((long)size < 0)
463ee0b2 85 croak("panic: malloc");
34de22dd 86#endif
8d063cd8 87 ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */
79072805 88#if !(defined(I286) || defined(atarist))
760ac839 89 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) malloc %ld bytes\n",ptr,an++,(long)size));
79072805 90#else
760ac839 91 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) malloc %ld bytes\n",ptr,an++,(long)size));
8d063cd8
LW
92#endif
93 if (ptr != Nullch)
94 return ptr;
7c0587c8
LW
95 else if (nomemok)
96 return Nullch;
8d063cd8 97 else {
760ac839 98 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
79072805 99 my_exit(1);
8d063cd8
LW
100 }
101 /*NOTREACHED*/
102}
103
104/* paranoid version of realloc */
105
bd4080b3 106Malloc_t
f0f333f4 107saferealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 108{
bd4080b3 109 Malloc_t ptr;
ecfc5424 110#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
bd4080b3 111 Malloc_t realloc();
ecfc5424 112#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 113
55497cff 114#ifdef HAS_64K_LIMIT
5f05dabc
PP
115 if (size > 0xffff) {
116 PerlIO_printf(PerlIO_stderr(),
117 "Reallocation too large: %lx\n", size) FLUSH;
118 my_exit(1);
119 }
55497cff 120#endif /* HAS_64K_LIMIT */
378cc40b 121 if (!where)
463ee0b2 122 croak("Null realloc");
34de22dd
LW
123#ifdef DEBUGGING
124 if ((long)size < 0)
463ee0b2 125 croak("panic: realloc");
34de22dd 126#endif
8d063cd8 127 ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */
79072805
LW
128
129#if !(defined(I286) || defined(atarist))
130 DEBUG_m( {
760ac839
LW
131 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) rfree\n",where,an++);
132 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) realloc %ld bytes\n",ptr,an++,(long)size);
79072805
LW
133 } )
134#else
135 DEBUG_m( {
760ac839
LW
136 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) rfree\n",where,an++);
137 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) realloc %ld bytes\n",ptr,an++,(long)size);
79072805 138 } )
8d063cd8 139#endif
79072805 140
8d063cd8
LW
141 if (ptr != Nullch)
142 return ptr;
7c0587c8
LW
143 else if (nomemok)
144 return Nullch;
8d063cd8 145 else {
760ac839 146 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
79072805 147 my_exit(1);
8d063cd8
LW
148 }
149 /*NOTREACHED*/
150}
151
152/* safe version of free */
153
54310121 154Free_t
f0f333f4 155safefree(Malloc_t where)
8d063cd8 156{
79072805 157#if !(defined(I286) || defined(atarist))
f0f333f4 158 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%x: (%05d) free\n",(char *) where,an++));
79072805 159#else
f0f333f4 160 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) free\n",(char *) where,an++));
8d063cd8 161#endif
378cc40b 162 if (where) {
de3bb511 163 /*SUPPRESS 701*/
378cc40b
LW
164 free(where);
165 }
8d063cd8
LW
166}
167
1050c9ca
PP
168/* safe version of calloc */
169
bd4080b3 170Malloc_t
f0f333f4 171safecalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 172{
bd4080b3 173 Malloc_t ptr;
1050c9ca 174
55497cff 175#ifdef HAS_64K_LIMIT
5f05dabc
PP
176 if (size * count > 0xffff) {
177 PerlIO_printf(PerlIO_stderr(),
178 "Allocation too large: %lx\n", size * count) FLUSH;
179 my_exit(1);
180 }
55497cff 181#endif /* HAS_64K_LIMIT */
1050c9ca
PP
182#ifdef DEBUGGING
183 if ((long)size < 0 || (long)count < 0)
184 croak("panic: calloc");
185#endif
0b7c1c42
GS
186 size *= count;
187 ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */
1050c9ca 188#if !(defined(I286) || defined(atarist))
fb73857a 189 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
1050c9ca 190#else
fb73857a 191 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
1050c9ca 192#endif
1050c9ca
PP
193 if (ptr != Nullch) {
194 memset((void*)ptr, 0, size);
195 return ptr;
196 }
197 else if (nomemok)
198 return Nullch;
199 else {
760ac839 200 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
1050c9ca
PP
201 my_exit(1);
202 }
203 /*NOTREACHED*/
204}
205
55497cff 206#endif /* !MYMALLOC */
de3bb511 207
a687059c
LW
208#ifdef LEAKTEST
209
210#define ALIGN sizeof(long)
8d063cd8 211
bd4080b3 212Malloc_t
f0f333f4 213safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 214{
bd4080b3 215 register Malloc_t where;
8d063cd8 216
a687059c
LW
217 where = safemalloc(size + ALIGN);
218 xcount[x]++;
219 where[0] = x % 100;
220 where[1] = x / 100;
221 return where + ALIGN;
8d063cd8 222}
8d063cd8 223
bd4080b3 224Malloc_t
f0f333f4 225safexrealloc(Malloc_t where, MEM_SIZE size)
a687059c 226{
bd4080b3 227 register Malloc_t new = saferealloc(where - ALIGN, size + ALIGN);
a0d0e21e 228 return new + ALIGN;
a687059c
LW
229}
230
231void
f0f333f4 232safexfree(Malloc_t where)
a687059c 233{
79072805 234 I32 x;
a687059c
LW
235
236 if (!where)
237 return;
238 where -= ALIGN;
239 x = where[0] + 100 * where[1];
240 xcount[x]--;
241 safefree(where);
242}
243
bd4080b3 244Malloc_t
f0f333f4 245safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 246{
bd4080b3 247 register Malloc_t where;
1050c9ca
PP
248
249 where = safexmalloc(x, size * count + ALIGN);
250 xcount[x]++;
251 memset((void*)where + ALIGN, 0, size * count);
252 where[0] = x % 100;
253 where[1] = x / 100;
254 return where + ALIGN;
255}
256
7c0587c8 257static void
f0f333f4 258xstat(void)
8d063cd8 259{
79072805 260 register I32 i;
8d063cd8 261
a687059c 262 for (i = 0; i < MAXXCOUNT; i++) {
de3bb511 263 if (xcount[i] > lastxcount[i]) {
760ac839 264 PerlIO_printf(PerlIO_stderr(),"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]);
a687059c 265 lastxcount[i] = xcount[i];
8d063cd8
LW
266 }
267 }
8d063cd8 268}
a687059c
LW
269
270#endif /* LEAKTEST */
8d063cd8
LW
271
272/* copy a string up to some (non-backslashed) delimiter, if any */
273
274char *
8ac85365 275delimcpy(register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 276{
fc36a67e
PP
277 register I32 tolen;
278 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW
279 if (*from == '\\') {
280 if (from[1] == delim)
281 from++;
fc36a67e
PP
282 else {
283 if (to < toend)
284 *to++ = *from;
285 tolen++;
286 from++;
287 }
378cc40b 288 }
bedebaa5 289 else if (*from == delim)
8d063cd8 290 break;
fc36a67e
PP
291 if (to < toend)
292 *to++ = *from;
8d063cd8 293 }
bedebaa5
CS
294 if (to < toend)
295 *to = '\0';
fc36a67e 296 *retlen = tolen;
8d063cd8
LW
297 return from;
298}
299
300/* return ptr to little string in big string, NULL if not found */
378cc40b 301/* This routine was donated by Corey Satten. */
8d063cd8
LW
302
303char *
8ac85365 304instr(register char *big, register char *little)
378cc40b
LW
305{
306 register char *s, *x;
79072805 307 register I32 first;
378cc40b 308
a687059c
LW
309 if (!little)
310 return big;
311 first = *little++;
378cc40b
LW
312 if (!first)
313 return big;
314 while (*big) {
315 if (*big++ != first)
316 continue;
317 for (x=big,s=little; *s; /**/ ) {
318 if (!*x)
319 return Nullch;
320 if (*s++ != *x++) {
321 s--;
322 break;
323 }
324 }
325 if (!*s)
326 return big-1;
327 }
328 return Nullch;
329}
8d063cd8 330
a687059c
LW
331/* same as instr but allow embedded nulls */
332
333char *
8ac85365 334ninstr(register char *big, register char *bigend, char *little, char *lend)
8d063cd8 335{
a687059c 336 register char *s, *x;
79072805 337 register I32 first = *little;
a687059c 338 register char *littleend = lend;
378cc40b 339
a0d0e21e 340 if (!first && little >= littleend)
a687059c 341 return big;
de3bb511
LW
342 if (bigend - big < littleend - little)
343 return Nullch;
a687059c
LW
344 bigend -= littleend - little++;
345 while (big <= bigend) {
346 if (*big++ != first)
347 continue;
348 for (x=big,s=little; s < littleend; /**/ ) {
349 if (*s++ != *x++) {
350 s--;
351 break;
352 }
353 }
354 if (s >= littleend)
355 return big-1;
378cc40b 356 }
a687059c
LW
357 return Nullch;
358}
359
360/* reverse of the above--find last substring */
361
362char *
8ac85365 363rninstr(register char *big, char *bigend, char *little, char *lend)
a687059c
LW
364{
365 register char *bigbeg;
366 register char *s, *x;
79072805 367 register I32 first = *little;
a687059c
LW
368 register char *littleend = lend;
369
a0d0e21e 370 if (!first && little >= littleend)
a687059c
LW
371 return bigend;
372 bigbeg = big;
373 big = bigend - (littleend - little++);
374 while (big >= bigbeg) {
375 if (*big-- != first)
376 continue;
377 for (x=big+2,s=little; s < littleend; /**/ ) {
378 if (*s++ != *x++) {
379 s--;
380 break;
381 }
382 }
383 if (s >= littleend)
384 return big+1;
378cc40b 385 }
a687059c 386 return Nullch;
378cc40b 387}
a687059c 388
bbce6d69
PP
389/*
390 * Set up for a new ctype locale.
391 */
55497cff 392void
8ac85365 393perl_new_ctype(char *newctype)
ef7eada9 394{
36477c24
PP
395#ifdef USE_LOCALE_CTYPE
396
bbce6d69 397 int i;
ef7eada9 398
bbce6d69
PP
399 for (i = 0; i < 256; i++) {
400 if (isUPPER_LC(i))
401 fold_locale[i] = toLOWER_LC(i);
402 else if (isLOWER_LC(i))
403 fold_locale[i] = toUPPER_LC(i);
404 else
405 fold_locale[i] = i;
406 }
bbce6d69 407
36477c24
PP
408#endif /* USE_LOCALE_CTYPE */
409}
bbce6d69
PP
410
411/*
412 * Set up for a new collation locale.
413 */
414void
8ac85365 415perl_new_collate(char *newcoll)
bbce6d69 416{
36477c24
PP
417#ifdef USE_LOCALE_COLLATE
418
bbce6d69
PP
419 if (! newcoll) {
420 if (collation_name) {
421 ++collation_ix;
422 Safefree(collation_name);
423 collation_name = NULL;
424 collation_standard = TRUE;
bbce6d69
PP
425 collxfrm_base = 0;
426 collxfrm_mult = 2;
bbce6d69
PP
427 }
428 return;
429 }
430
431 if (! collation_name || strNE(collation_name, newcoll)) {
432 ++collation_ix;
433 Safefree(collation_name);
434 collation_name = savepv(newcoll);
ff68c719 435 collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 436
bbce6d69
PP
437 {
438 /* 2: at most so many chars ('a', 'b'). */
439 /* 50: surely no system expands a char more. */
440#define XFRMBUFSIZE (2 * 50)
441 char xbuf[XFRMBUFSIZE];
442 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
443 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
444 SSize_t mult = fb - fa;
445 if (mult < 1)
446 croak("strxfrm() gets absurd");
447 collxfrm_base = (fa > mult) ? (fa - mult) : 0;
448 collxfrm_mult = mult;
449 }
bbce6d69 450 }
bbce6d69 451
36477c24
PP
452#endif /* USE_LOCALE_COLLATE */
453}
bbce6d69
PP
454
455/*
456 * Set up for a new numeric locale.
457 */
458void
8ac85365 459perl_new_numeric(char *newnum)
bbce6d69 460{
36477c24
PP
461#ifdef USE_LOCALE_NUMERIC
462
bbce6d69
PP
463 if (! newnum) {
464 if (numeric_name) {
465 Safefree(numeric_name);
466 numeric_name = NULL;
467 numeric_standard = TRUE;
468 numeric_local = TRUE;
469 }
470 return;
471 }
472
473 if (! numeric_name || strNE(numeric_name, newnum)) {
474 Safefree(numeric_name);
475 numeric_name = savepv(newnum);
ff68c719 476 numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
bbce6d69
PP
477 numeric_local = TRUE;
478 }
36477c24
PP
479
480#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
481}
482
483void
8ac85365 484perl_set_numeric_standard(void)
bbce6d69 485{
5f05dabc
PP
486#ifdef USE_LOCALE_NUMERIC
487
bbce6d69
PP
488 if (! numeric_standard) {
489 setlocale(LC_NUMERIC, "C");
490 numeric_standard = TRUE;
491 numeric_local = FALSE;
492 }
5f05dabc
PP
493
494#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
495}
496
497void
8ac85365 498perl_set_numeric_local(void)
bbce6d69 499{
5f05dabc
PP
500#ifdef USE_LOCALE_NUMERIC
501
bbce6d69
PP
502 if (! numeric_local) {
503 setlocale(LC_NUMERIC, numeric_name);
504 numeric_standard = FALSE;
505 numeric_local = TRUE;
506 }
bbce6d69 507
36477c24 508#endif /* USE_LOCALE_NUMERIC */
5f05dabc 509}
36477c24 510
bbce6d69 511
36477c24
PP
512/*
513 * Initialize locale awareness.
514 */
f0c5b223 515int
8ac85365 516perl_init_i18nl10n(int printwarn)
f0c5b223
TB
517{
518 int ok = 1;
519 /* returns
520 * 1 = set ok or not applicable,
521 * 0 = fallback to C locale,
522 * -1 = fallback to C locale failed
523 */
bbce6d69 524
36477c24 525#ifdef USE_LOCALE
bbce6d69 526
36477c24 527#ifdef USE_LOCALE_CTYPE
bbce6d69 528 char *curctype = NULL;
36477c24
PP
529#endif /* USE_LOCALE_CTYPE */
530#ifdef USE_LOCALE_COLLATE
bbce6d69 531 char *curcoll = NULL;
36477c24
PP
532#endif /* USE_LOCALE_COLLATE */
533#ifdef USE_LOCALE_NUMERIC
bbce6d69 534 char *curnum = NULL;
36477c24 535#endif /* USE_LOCALE_NUMERIC */
02b32252 536 char *lc_all = getenv("LC_ALL");
5f05dabc 537 char *lang = getenv("LANG");
bbce6d69 538 bool setlocale_failure = FALSE;
f0c5b223 539
02b32252
CS
540#ifdef LOCALE_ENVIRON_REQUIRED
541
542 /*
543 * Ultrix setlocale(..., "") fails if there are no environment
544 * variables from which to get a locale name.
545 */
546
547 bool done = FALSE;
548
549#ifdef LC_ALL
550 if (lang) {
551 if (setlocale(LC_ALL, ""))
552 done = TRUE;
553 else
554 setlocale_failure = TRUE;
555 }
556 if (!setlocale_failure)
557#endif /* LC_ALL */
558 {
559#ifdef USE_LOCALE_CTYPE
560 if (! (curctype = setlocale(LC_CTYPE,
561 (!done && (lang || getenv("LC_CTYPE")))
562 ? "" : Nullch)))
563 setlocale_failure = TRUE;
564#endif /* USE_LOCALE_CTYPE */
565#ifdef USE_LOCALE_COLLATE
566 if (! (curcoll = setlocale(LC_COLLATE,
567 (!done && (lang || getenv("LC_COLLATE")))
568 ? "" : Nullch)))
569 setlocale_failure = TRUE;
570#endif /* USE_LOCALE_COLLATE */
571#ifdef USE_LOCALE_NUMERIC
572 if (! (curnum = setlocale(LC_NUMERIC,
573 (!done && (lang || getenv("LC_NUMERIC")))
574 ? "" : Nullch)))
575 setlocale_failure = TRUE;
576#endif /* USE_LOCALE_NUMERIC */
577 }
578
579#else /* !LOCALE_ENVIRON_REQUIRED */
580
bbce6d69 581#ifdef LC_ALL
5f05dabc 582
bbce6d69
PP
583 if (! setlocale(LC_ALL, ""))
584 setlocale_failure = TRUE;
5f05dabc
PP
585 else {
586#ifdef USE_LOCALE_CTYPE
587 curctype = setlocale(LC_CTYPE, Nullch);
588#endif /* USE_LOCALE_CTYPE */
589#ifdef USE_LOCALE_COLLATE
590 curcoll = setlocale(LC_COLLATE, Nullch);
591#endif /* USE_LOCALE_COLLATE */
592#ifdef USE_LOCALE_NUMERIC
593 curnum = setlocale(LC_NUMERIC, Nullch);
594#endif /* USE_LOCALE_NUMERIC */
595 }
596
597#else /* !LC_ALL */
bbce6d69 598
36477c24 599#ifdef USE_LOCALE_CTYPE
5f05dabc 600 if (! (curctype = setlocale(LC_CTYPE, "")))
bbce6d69 601 setlocale_failure = TRUE;
36477c24
PP
602#endif /* USE_LOCALE_CTYPE */
603#ifdef USE_LOCALE_COLLATE
5f05dabc 604 if (! (curcoll = setlocale(LC_COLLATE, "")))
bbce6d69 605 setlocale_failure = TRUE;
36477c24
PP
606#endif /* USE_LOCALE_COLLATE */
607#ifdef USE_LOCALE_NUMERIC
5f05dabc 608 if (! (curnum = setlocale(LC_NUMERIC, "")))
bbce6d69 609 setlocale_failure = TRUE;
36477c24 610#endif /* USE_LOCALE_NUMERIC */
bbce6d69 611
5f05dabc
PP
612#endif /* LC_ALL */
613
02b32252
CS
614#endif /* !LOCALE_ENVIRON_REQUIRED */
615
5f05dabc
PP
616 if (setlocale_failure) {
617 char *p;
618 bool locwarn = (printwarn > 1 ||
619 printwarn &&
620 (!(p = getenv("PERL_BADLANG")) || atoi(p)));
20cec16a 621
5f05dabc
PP
622 if (locwarn) {
623#ifdef LC_ALL
624
625 PerlIO_printf(PerlIO_stderr(),
626 "perl: warning: Setting locale failed.\n");
627
628#else /* !LC_ALL */
629
ef7eada9 630 PerlIO_printf(PerlIO_stderr(),
bbce6d69 631 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 632#ifdef USE_LOCALE_CTYPE
bbce6d69 633 if (! curctype)
5f05dabc 634 PerlIO_printf(PerlIO_stderr(), "LC_CTYPE ");
36477c24
PP
635#endif /* USE_LOCALE_CTYPE */
636#ifdef USE_LOCALE_COLLATE
bbce6d69 637 if (! curcoll)
5f05dabc 638 PerlIO_printf(PerlIO_stderr(), "LC_COLLATE ");
36477c24
PP
639#endif /* USE_LOCALE_COLLATE */
640#ifdef USE_LOCALE_NUMERIC
bbce6d69 641 if (! curnum)
5f05dabc 642 PerlIO_printf(PerlIO_stderr(), "LC_NUMERIC ");
36477c24 643#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
644 PerlIO_printf(PerlIO_stderr(), "\n");
645
5f05dabc
PP
646#endif /* LC_ALL */
647
760ac839 648 PerlIO_printf(PerlIO_stderr(),
bbce6d69 649 "perl: warning: Please check that your locale settings:\n");
ef7eada9
JH
650
651 PerlIO_printf(PerlIO_stderr(),
bbce6d69
PP
652 "\tLC_ALL = %c%s%c,\n",
653 lc_all ? '"' : '(',
654 lc_all ? lc_all : "unset",
655 lc_all ? '"' : ')');
5f05dabc
PP
656
657 {
658 char **e;
659 for (e = environ; *e; e++) {
660 if (strnEQ(*e, "LC_", 3)
661 && strnNE(*e, "LC_ALL=", 7)
662 && (p = strchr(*e, '=')))
663 PerlIO_printf(PerlIO_stderr(), "\t%.*s = \"%s\",\n",
fb73857a 664 (int)(p - *e), *e, p + 1);
5f05dabc
PP
665 }
666 }
667
ef7eada9 668 PerlIO_printf(PerlIO_stderr(),
bbce6d69 669 "\tLANG = %c%s%c\n",
5f05dabc 670 lang ? '"' : '(',
bbce6d69
PP
671 lang ? lang : "unset",
672 lang ? '"' : ')');
ef7eada9 673
bbce6d69
PP
674 PerlIO_printf(PerlIO_stderr(),
675 " are supported and installed on your system.\n");
5f05dabc 676 }
ef7eada9 677
5f05dabc
PP
678#ifdef LC_ALL
679
680 if (setlocale(LC_ALL, "C")) {
681 if (locwarn)
682 PerlIO_printf(PerlIO_stderr(),
683 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 684 ok = 0;
ef7eada9 685 }
5f05dabc
PP
686 else {
687 if (locwarn)
688 PerlIO_printf(PerlIO_stderr(),
689 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
690 ok = -1;
691 }
bbce6d69 692
5f05dabc
PP
693#else /* ! LC_ALL */
694
695 if (0
36477c24 696#ifdef USE_LOCALE_CTYPE
5f05dabc 697 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24
PP
698#endif /* USE_LOCALE_CTYPE */
699#ifdef USE_LOCALE_COLLATE
5f05dabc 700 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24
PP
701#endif /* USE_LOCALE_COLLATE */
702#ifdef USE_LOCALE_NUMERIC
5f05dabc 703 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 704#endif /* USE_LOCALE_NUMERIC */
5f05dabc
PP
705 )
706 {
707 if (locwarn)
bbce6d69 708 PerlIO_printf(PerlIO_stderr(),
5f05dabc
PP
709 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
710 ok = -1;
bbce6d69 711 }
5f05dabc 712
bbce6d69 713#endif /* ! LC_ALL */
5f05dabc
PP
714
715#ifdef USE_LOCALE_CTYPE
716 curctype = setlocale(LC_CTYPE, Nullch);
717#endif /* USE_LOCALE_CTYPE */
718#ifdef USE_LOCALE_COLLATE
719 curcoll = setlocale(LC_COLLATE, Nullch);
720#endif /* USE_LOCALE_COLLATE */
721#ifdef USE_LOCALE_NUMERIC
722 curnum = setlocale(LC_NUMERIC, Nullch);
723#endif /* USE_LOCALE_NUMERIC */
ef7eada9
JH
724 }
725
36477c24 726#ifdef USE_LOCALE_CTYPE
bbce6d69 727 perl_new_ctype(curctype);
36477c24 728#endif /* USE_LOCALE_CTYPE */
bbce6d69 729
36477c24 730#ifdef USE_LOCALE_COLLATE
bbce6d69 731 perl_new_collate(curcoll);
36477c24 732#endif /* USE_LOCALE_COLLATE */
bbce6d69 733
36477c24 734#ifdef USE_LOCALE_NUMERIC
bbce6d69 735 perl_new_numeric(curnum);
36477c24 736#endif /* USE_LOCALE_NUMERIC */
ef7eada9 737
36477c24 738#endif /* USE_LOCALE */
ef7eada9 739
f0c5b223
TB
740 return ok;
741}
742
bbce6d69
PP
743/* Backwards compatibility. */
744int
8ac85365 745perl_init_i18nl14n(int printwarn)
bbce6d69 746{
5f05dabc 747 return perl_init_i18nl10n(printwarn);
bbce6d69 748}
ef7eada9 749
36477c24 750#ifdef USE_LOCALE_COLLATE
ef7eada9 751
bbce6d69
PP
752/*
753 * mem_collxfrm() is a bit like strxfrm() but with two important
754 * differences. First, it handles embedded NULs. Second, it allocates
755 * a bit more memory than needed for the transformed data itself.
756 * The real transformed data begins at offset sizeof(collationix).
757 * Please see sv_collxfrm() to see how this is used.
758 */
759char *
8ac85365 760mem_collxfrm(const char *s, STRLEN len, STRLEN *xlen)
bbce6d69
PP
761{
762 char *xbuf;
763 STRLEN xalloc, xin, xout;
764
765 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
766 /* the +1 is for the terminating NUL. */
767
768 xalloc = sizeof(collation_ix) + collxfrm_base + (collxfrm_mult * len) + 1;
769 New(171, xbuf, xalloc, char);
770 if (! xbuf)
771 goto bad;
772
773 *(U32*)xbuf = collation_ix;
774 xout = sizeof(collation_ix);
775 for (xin = 0; xin < len; ) {
776 SSize_t xused;
777
778 for (;;) {
779 xused = strxfrm(xbuf + xout, s + xin, xalloc - xout);
780 if (xused == -1)
781 goto bad;
782 if (xused < xalloc - xout)
783 break;
784 xalloc = (2 * xalloc) + 1;
785 Renew(xbuf, xalloc, char);
786 if (! xbuf)
787 goto bad;
788 }
ef7eada9 789
bbce6d69
PP
790 xin += strlen(s + xin) + 1;
791 xout += xused;
792
793 /* Embedded NULs are understood but silently skipped
794 * because they make no sense in locale collation. */
795 }
ef7eada9 796
bbce6d69
PP
797 xbuf[xout] = '\0';
798 *xlen = xout - sizeof(collation_ix);
799 return xbuf;
800
801 bad:
802 Safefree(xbuf);
803 *xlen = 0;
804 return NULL;
ef7eada9
JH
805}
806
36477c24 807#endif /* USE_LOCALE_COLLATE */
bbce6d69 808
378cc40b 809void
8ac85365 810fbm_compile(SV *sv)
378cc40b 811{
a687059c
LW
812 register unsigned char *s;
813 register unsigned char *table;
79072805
LW
814 register U32 i;
815 register U32 len = SvCUR(sv);
816 I32 rarest = 0;
817 U32 frequency = 256;
818
748a9306
LW
819 if (len > 255)
820 return; /* can't have offsets that big */
79072805 821 Sv_Grow(sv,len+258);
463ee0b2 822 table = (unsigned char*)(SvPVX(sv) + len + 1);
a687059c
LW
823 s = table - 2;
824 for (i = 0; i < 256; i++) {
378cc40b
LW
825 table[i] = len;
826 }
827 i = 0;
463ee0b2 828 while (s >= (unsigned char*)(SvPVX(sv)))
a687059c 829 {
bbce6d69
PP
830 if (table[*s] == len)
831 table[*s] = i;
378cc40b
LW
832 s--,i++;
833 }
79072805 834 sv_upgrade(sv, SVt_PVBM);
bbce6d69 835 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 836 SvVALID_on(sv);
378cc40b 837
463ee0b2 838 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69
PP
839 for (i = 0; i < len; i++) {
840 if (freq[s[i]] < frequency) {
841 rarest = i;
842 frequency = freq[s[i]];
378cc40b
LW
843 }
844 }
79072805
LW
845 BmRARE(sv) = s[rarest];
846 BmPREVIOUS(sv) = rarest;
760ac839 847 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW
848}
849
378cc40b 850char *
8ac85365 851fbm_instr(unsigned char *big, register unsigned char *bigend, SV *littlestr)
378cc40b 852{
a687059c 853 register unsigned char *s;
79072805
LW
854 register I32 tmp;
855 register I32 littlelen;
a687059c
LW
856 register unsigned char *little;
857 register unsigned char *table;
858 register unsigned char *olds;
859 register unsigned char *oldlittle;
378cc40b 860
79072805 861 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
a0d0e21e
LW
862 STRLEN len;
863 char *l = SvPV(littlestr,len);
864 if (!len)
d48672a2 865 return (char*)big;
a0d0e21e 866 return ninstr((char*)big,(char*)bigend, l, l + len);
d48672a2 867 }
378cc40b 868
79072805
LW
869 littlelen = SvCUR(littlestr);
870 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
0f85fab0
LW
871 if (littlelen > bigend - big)
872 return Nullch;
463ee0b2 873 little = (unsigned char*)SvPVX(littlestr);
bbce6d69 874 s = bigend - littlelen;
36477c24 875 if (*s == *little && memEQ((char*)s,(char*)little,littlelen))
bbce6d69
PP
876 return (char*)s; /* how sweet it is */
877 else if (bigend[-1] == '\n' && little[littlelen-1] != '\n'
878 && s > big) {
879 s--;
36477c24 880 if (*s == *little && memEQ((char*)s,(char*)little,littlelen))
bbce6d69 881 return (char*)s;
a687059c 882 }
bbce6d69 883 return Nullch;
a687059c 884 }
463ee0b2 885 table = (unsigned char*)(SvPVX(littlestr) + littlelen + 1);
62b28dd9
LW
886 if (--littlelen >= bigend - big)
887 return Nullch;
888 s = big + littlelen;
a687059c 889 oldlittle = little = table - 2;
bbce6d69
PP
890 if (s < bigend) {
891 top2:
892 /*SUPPRESS 560*/
893 if (tmp = table[*s]) {
62b28dd9 894#ifdef POINTERRIGOR
bbce6d69
PP
895 if (bigend - s > tmp) {
896 s += tmp;
897 goto top2;
898 }
62b28dd9 899#else
bbce6d69
PP
900 if ((s += tmp) < bigend)
901 goto top2;
62b28dd9 902#endif
bbce6d69 903 return Nullch;
a687059c 904 }
bbce6d69
PP
905 else {
906 tmp = littlelen; /* less expensive than calling strncmp() */
907 olds = s;
908 while (tmp--) {
909 if (*--s == *--little)
910 continue;
911 s = olds + 1; /* here we pay the price for failure */
912 little = oldlittle;
913 if (s < bigend) /* fake up continue to outer loop */
62b28dd9 914 goto top2;
62b28dd9 915 return Nullch;
a687059c 916 }
bbce6d69 917 return (char *)s;
378cc40b
LW
918 }
919 }
920 return Nullch;
921}
922
923char *
8ac85365 924screaminstr(SV *bigstr, SV *littlestr)
378cc40b 925{
a687059c
LW
926 register unsigned char *s, *x;
927 register unsigned char *big;
79072805
LW
928 register I32 pos;
929 register I32 previous;
930 register I32 first;
a687059c
LW
931 register unsigned char *little;
932 register unsigned char *bigend;
933 register unsigned char *littleend;
378cc40b 934
79072805 935 if ((pos = screamfirst[BmRARE(littlestr)]) < 0)
378cc40b 936 return Nullch;
463ee0b2 937 little = (unsigned char *)(SvPVX(littlestr));
79072805 938 littleend = little + SvCUR(littlestr);
378cc40b 939 first = *little++;
79072805 940 previous = BmPREVIOUS(littlestr);
463ee0b2 941 big = (unsigned char *)(SvPVX(bigstr));
79072805 942 bigend = big + SvCUR(bigstr);
378cc40b
LW
943 while (pos < previous) {
944 if (!(pos += screamnext[pos]))
945 return Nullch;
946 }
de3bb511 947#ifdef POINTERRIGOR
bbce6d69
PP
948 do {
949 if (big[pos-previous] != first)
950 continue;
951 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
952 if (x >= bigend)
953 return Nullch;
954 if (*s++ != *x++) {
955 s--;
956 break;
de3bb511 957 }
bbce6d69
PP
958 }
959 if (s == littleend)
960 return (char *)(big+pos-previous);
961 } while ( pos += screamnext[pos] );
de3bb511
LW
962#else /* !POINTERRIGOR */
963 big -= previous;
bbce6d69
PP
964 do {
965 if (big[pos] != first)
966 continue;
967 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
968 if (x >= bigend)
969 return Nullch;
970 if (*s++ != *x++) {
971 s--;
972 break;
378cc40b 973 }
bbce6d69
PP
974 }
975 if (s == littleend)
976 return (char *)(big+pos);
977 } while ( pos += screamnext[pos] );
de3bb511 978#endif /* POINTERRIGOR */
8d063cd8
LW
979 return Nullch;
980}
981
79072805 982I32
8ac85365 983ibcmp(char *s1, char *s2, register I32 len)
79072805 984{
bbce6d69
PP
985 register U8 *a = (U8 *)s1;
986 register U8 *b = (U8 *)s2;
79072805 987 while (len--) {
bbce6d69
PP
988 if (*a != *b && *a != fold[*b])
989 return 1;
990 a++,b++;
991 }
992 return 0;
993}
994
995I32
8ac85365 996ibcmp_locale(char *s1, char *s2, register I32 len)
bbce6d69
PP
997{
998 register U8 *a = (U8 *)s1;
999 register U8 *b = (U8 *)s2;
1000 while (len--) {
1001 if (*a != *b && *a != fold_locale[*b])
1002 return 1;
1003 a++,b++;
79072805
LW
1004 }
1005 return 0;
1006}
1007
8d063cd8
LW
1008/* copy a string to a safe spot */
1009
1010char *
8ac85365 1011savepv(char *sv)
8d063cd8 1012{
a687059c 1013 register char *newaddr;
8d063cd8 1014
79072805
LW
1015 New(902,newaddr,strlen(sv)+1,char);
1016 (void)strcpy(newaddr,sv);
8d063cd8
LW
1017 return newaddr;
1018}
1019
a687059c
LW
1020/* same thing but with a known length */
1021
1022char *
8ac85365 1023savepvn(char *sv, register I32 len)
a687059c
LW
1024{
1025 register char *newaddr;
1026
1027 New(903,newaddr,len+1,char);
79072805 1028 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW
1029 newaddr[len] = '\0'; /* is now */
1030 return newaddr;
1031}
1032
fc36a67e
PP
1033/* the SV for form() and mess() is not kept in an arena */
1034
1035static SV *
8ac85365 1036mess_alloc(void)
fc36a67e
PP
1037{
1038 SV *sv;
1039 XPVMG *any;
1040
1041 /* Create as PVMG now, to avoid any upgrading later */
1042 New(905, sv, 1, SV);
1043 Newz(905, any, 1, XPVMG);
1044 SvFLAGS(sv) = SVt_PVMG;
1045 SvANY(sv) = (void*)any;
1046 SvREFCNT(sv) = 1 << 30; /* practically infinite */
1047 return sv;
1048}
1049
a0d0e21e 1050#ifdef I_STDARG
8990e307 1051char *
46fc3d4c 1052form(const char* pat, ...)
a687059c
LW
1053#else
1054/*VARARGS0*/
de3bb511 1055char *
46fc3d4c 1056form(pat, va_alist)
71be2cbc 1057 const char *pat;
46fc3d4c 1058 va_dcl
8990e307
LW
1059#endif
1060{
46fc3d4c
PP
1061 va_list args;
1062#ifdef I_STDARG
1063 va_start(args, pat);
a687059c 1064#else
46fc3d4c 1065 va_start(args);
d48672a2 1066#endif
fc36a67e
PP
1067 if (!mess_sv)
1068 mess_sv = mess_alloc();
1069 sv_vsetpvfn(mess_sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
46fc3d4c 1070 va_end(args);
fc36a67e 1071 return SvPVX(mess_sv);
46fc3d4c 1072}
a687059c 1073
46fc3d4c 1074char *
8ac85365 1075mess(const char *pat, va_list *args)
46fc3d4c
PP
1076{
1077 SV *sv;
1078 static char dgd[] = " during global destruction.\n";
1079
46fc3d4c 1080 if (!mess_sv)
fc36a67e 1081 mess_sv = mess_alloc();
46fc3d4c 1082 sv = mess_sv;
fc36a67e 1083 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1084 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1085 dTHR;
2304df62 1086 if (dirty)
46fc3d4c 1087 sv_catpv(sv, dgd);
2304df62 1088 else {
46fc3d4c 1089 if (curcop->cop_line)
fc36a67e 1090 sv_catpvf(sv, " at %_ line %ld",
46fc3d4c 1091 GvSV(curcop->cop_filegv), (long)curcop->cop_line);
c07a80fd
PP
1092 if (GvIO(last_in_gv) && IoLINES(GvIOp(last_in_gv))) {
1093 bool line_mode = (RsSIMPLE(rs) &&
1094 SvLEN(rs) == 1 && *SvPVX(rs) == '\n');
46fc3d4c
PP
1095 sv_catpvf(sv, ", <%s> %s %ld",
1096 last_in_gv == argvgv ? "" : GvNAME(last_in_gv),
1097 line_mode ? "line" : "chunk",
1098 (long)IoLINES(GvIOp(last_in_gv)));
2304df62 1099 }
46fc3d4c 1100 sv_catpv(sv, ".\n");
a687059c 1101 }
a687059c 1102 }
46fc3d4c 1103 return SvPVX(sv);
a687059c
LW
1104}
1105
ecfc5424 1106#ifdef I_STDARG
36477c24 1107OP *
71be2cbc 1108die(const char* pat, ...)
36477c24
PP
1109#else
1110/*VARARGS0*/
1111OP *
1112die(pat, va_alist)
71be2cbc 1113 const char *pat;
36477c24
PP
1114 va_dcl
1115#endif
1116{
5dc0d613 1117 dTHR;
36477c24
PP
1118 va_list args;
1119 char *message;
035902c7 1120 I32 oldrunlevel = runlevel;
36477c24
PP
1121 int was_in_eval = in_eval;
1122 HV *stash;
1123 GV *gv;
1124 CV *cv;
1125
d9f997d7 1126 DEBUG_L(PerlIO_printf(PerlIO_stderr(), "die: curstack = %p, mainstack= %p\n",
0f15f207 1127 curstack, mainstack));/*debug*/
36477c24
PP
1128 /* We have to switch back to mainstack or die_where may try to pop
1129 * the eval block from the wrong stack if die is being called from a
1130 * signal handler. - dkindred@cs.cmu.edu */
1131 if (curstack != mainstack) {
1132 dSP;
1133 SWITCHSTACK(curstack, mainstack);
1134 }
1135
1136#ifdef I_STDARG
1137 va_start(args, pat);
1138#else
1139 va_start(args);
1140#endif
1141 message = mess(pat, &args);
1142 va_end(args);
1143
d9f997d7 1144 DEBUG_L(PerlIO_printf(PerlIO_stderr(), "die: message = %s\ndiehook = %p\n",
0f15f207 1145 message, diehook));/*debug*/
1738f5c4
CS
1146 if (diehook) {
1147 /* sv_2cv might call croak() */
1148 SV *olddiehook = diehook;
1149 ENTER;
1150 SAVESPTR(diehook);
1151 diehook = Nullsv;
1152 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1153 LEAVE;
1154 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1155 dSP;
774d564b
PP
1156 SV *msg;
1157
1158 ENTER;
1159 msg = newSVpv(message, 0);
1160 SvREADONLY_on(msg);
1161 SAVEFREESV(msg);
1738f5c4
CS
1162
1163 PUSHMARK(sp);
1164 XPUSHs(msg);
1165 PUTBACK;
1166 perl_call_sv((SV*)cv, G_DISCARD);
1167
774d564b 1168 LEAVE;
1738f5c4 1169 }
36477c24
PP
1170 }
1171
1172 restartop = die_where(message);
d9f997d7 1173 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
0f15f207
MB
1174 "die: restartop = %p, was_in_eval = %d, oldrunlevel = %d\n",
1175 restartop, was_in_eval, oldrunlevel));/*debug*/
36477c24 1176 if ((!restartop && was_in_eval) || oldrunlevel > 1)
54310121 1177 JMPENV_JUMP(3);
36477c24
PP
1178 return restartop;
1179}
1180
1181#ifdef I_STDARG
79072805 1182void
71be2cbc 1183croak(const char* pat, ...)
463ee0b2 1184#else
8990e307
LW
1185/*VARARGS0*/
1186void
1187croak(pat, va_alist)
1188 char *pat;
1189 va_dcl
463ee0b2 1190#endif
a687059c 1191{
11343788 1192 dTHR;
a687059c 1193 va_list args;
de3bb511 1194 char *message;
748a9306
LW
1195 HV *stash;
1196 GV *gv;
1197 CV *cv;
a687059c 1198
a0d0e21e 1199#ifdef I_STDARG
8990e307
LW
1200 va_start(args, pat);
1201#else
a687059c 1202 va_start(args);
8990e307 1203#endif
2304df62 1204 message = mess(pat, &args);
a687059c 1205 va_end(args);
11343788 1206#ifdef USE_THREADS
d9f997d7 1207 DEBUG_L(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
11343788 1208#endif /* USE_THREADS */
20cec16a 1209 if (diehook) {
1738f5c4 1210 /* sv_2cv might call croak() */
20cec16a 1211 SV *olddiehook = diehook;
1738f5c4
CS
1212 ENTER;
1213 SAVESPTR(diehook);
1214 diehook = Nullsv;
20cec16a 1215 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS
1216 LEAVE;
1217 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1218 dSP;
774d564b
PP
1219 SV *msg;
1220
1221 ENTER;
1222 msg = newSVpv(message, 0);
1223 SvREADONLY_on(msg);
1224 SAVEFREESV(msg);
20cec16a
PP
1225
1226 PUSHMARK(sp);
1738f5c4 1227 XPUSHs(msg);
20cec16a
PP
1228 PUTBACK;
1229 perl_call_sv((SV*)cv, G_DISCARD);
36477c24 1230
774d564b 1231 LEAVE;
20cec16a 1232 }
748a9306 1233 }
a0d0e21e
LW
1234 if (in_eval) {
1235 restartop = die_where(message);
54310121 1236 JMPENV_JUMP(3);
a0d0e21e 1237 }
760ac839
LW
1238 PerlIO_puts(PerlIO_stderr(),message);
1239 (void)PerlIO_flush(PerlIO_stderr());
f86702cc 1240 my_failure_exit();
a687059c
LW
1241}
1242
8990e307 1243void
ecfc5424 1244#ifdef I_STDARG
71be2cbc 1245warn(const char* pat,...)
463ee0b2 1246#else
8990e307
LW
1247/*VARARGS0*/
1248warn(pat,va_alist)
71be2cbc 1249 const char *pat;
8990e307 1250 va_dcl
463ee0b2 1251#endif
a687059c
LW
1252{
1253 va_list args;
de3bb511 1254 char *message;
748a9306
LW
1255 HV *stash;
1256 GV *gv;
1257 CV *cv;
a687059c 1258
a0d0e21e 1259#ifdef I_STDARG
8990e307
LW
1260 va_start(args, pat);
1261#else
a687059c 1262 va_start(args);
8990e307 1263#endif
2304df62 1264 message = mess(pat, &args);
a687059c
LW
1265 va_end(args);
1266
20cec16a 1267 if (warnhook) {
1738f5c4 1268 /* sv_2cv might call warn() */
11343788 1269 dTHR;
20cec16a 1270 SV *oldwarnhook = warnhook;
1738f5c4
CS
1271 ENTER;
1272 SAVESPTR(warnhook);
1273 warnhook = Nullsv;
20cec16a 1274 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS
1275 LEAVE;
1276 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1277 dSP;
774d564b
PP
1278 SV *msg;
1279
1280 ENTER;
1281 msg = newSVpv(message, 0);
1282 SvREADONLY_on(msg);
1283 SAVEFREESV(msg);
1284
20cec16a 1285 PUSHMARK(sp);
774d564b 1286 XPUSHs(msg);
20cec16a
PP
1287 PUTBACK;
1288 perl_call_sv((SV*)cv, G_DISCARD);
774d564b
PP
1289
1290 LEAVE;
20cec16a
PP
1291 return;
1292 }
748a9306 1293 }
20cec16a 1294 PerlIO_puts(PerlIO_stderr(),message);
a687059c 1295#ifdef LEAKTEST
20cec16a 1296 DEBUG_L(xstat());
a687059c 1297#endif
20cec16a 1298 (void)PerlIO_flush(PerlIO_stderr());
a687059c 1299}
8d063cd8 1300
a0d0e21e 1301#ifndef VMS /* VMS' my_setenv() is in VMS.c */
3e3baf6d 1302#ifndef WIN32
8d063cd8 1303void
8ac85365 1304my_setenv(char *nam, char *val)
8d063cd8 1305{
79072805 1306 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1307
fe14fcc3 1308 if (environ == origenviron) { /* need we copy environment? */
79072805
LW
1309 I32 j;
1310 I32 max;
fe14fcc3
LW
1311 char **tmpenv;
1312
de3bb511 1313 /*SUPPRESS 530*/
fe14fcc3
LW
1314 for (max = i; environ[max]; max++) ;
1315 New(901,tmpenv, max+2, char*);
1316 for (j=0; j<max; j++) /* copy environment */
a0d0e21e 1317 tmpenv[j] = savepv(environ[j]);
fe14fcc3
LW
1318 tmpenv[max] = Nullch;
1319 environ = tmpenv; /* tell exec where it is now */
1320 }
a687059c 1321 if (!val) {
e5ebf479 1322 Safefree(environ[i]);
a687059c
LW
1323 while (environ[i]) {
1324 environ[i] = environ[i+1];
1325 i++;
1326 }
1327 return;
1328 }
8d063cd8 1329 if (!environ[i]) { /* does not exist yet */
fe14fcc3 1330 Renew(environ, i+2, char*); /* just expand it a bit */
8d063cd8
LW
1331 environ[i+1] = Nullch; /* make sure it's null terminated */
1332 }
fe14fcc3
LW
1333 else
1334 Safefree(environ[i]);
a687059c 1335 New(904, environ[i], strlen(nam) + strlen(val) + 2, char);
62b28dd9 1336#ifndef MSDOS
a687059c 1337 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
62b28dd9
LW
1338#else
1339 /* MS-DOS requires environment variable names to be in uppercase */
fe14fcc3
LW
1340 /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but
1341 * some utilities and applications may break because they only look
1342 * for upper case strings. (Fixed strupr() bug here.)]
1343 */
1344 strcpy(environ[i],nam); strupr(environ[i]);
62b28dd9
LW
1345 (void)sprintf(environ[i] + strlen(nam),"=%s",val);
1346#endif /* MSDOS */
8d063cd8
LW
1347}
1348
3e3baf6d 1349#else /* if WIN32 */
68dc0745
PP
1350
1351void
1352my_setenv(nam,val)
1353char *nam, *val;
1354{
3e3baf6d
TB
1355
1356#ifdef USE_WIN32_RTL_ENV
1357
68dc0745
PP
1358 register char *envstr;
1359 STRLEN namlen = strlen(nam);
3e3baf6d
TB
1360 STRLEN vallen;
1361 char *oldstr = environ[setenv_getix(nam)];
1362
1363 /* putenv() has totally broken semantics in both the Borland
1364 * and Microsoft CRTLs. They either store the passed pointer in
1365 * the environment without making a copy, or make a copy and don't
1366 * free it. And on top of that, they dont free() old entries that
1367 * are being replaced/deleted. This means the caller must
1368 * free any old entries somehow, or we end up with a memory
1369 * leak every time my_setenv() is called. One might think
1370 * one could directly manipulate environ[], like the UNIX code
1371 * above, but direct changes to environ are not allowed when
1372 * calling putenv(), since the RTLs maintain an internal
1373 * *copy* of environ[]. Bad, bad, *bad* stink.
1374 * GSAR 97-06-07
1375 */
68dc0745 1376
3e3baf6d
TB
1377 if (!val) {
1378 if (!oldstr)
1379 return;
1380 val = "";
1381 vallen = 0;
1382 }
1383 else
1384 vallen = strlen(val);
fc36a67e 1385 New(904, envstr, namlen + vallen + 3, char);
68dc0745 1386 (void)sprintf(envstr,"%s=%s",nam,val);
3e3baf6d
TB
1387 (void)putenv(envstr);
1388 if (oldstr)
1389 Safefree(oldstr);
1390#ifdef _MSC_VER
1391 Safefree(envstr); /* MSVCRT leaks without this */
1392#endif
1393
1394#else /* !USE_WIN32_RTL_ENV */
1395
1396 /* The sane way to deal with the environment.
1397 * Has these advantages over putenv() & co.:
1398 * * enables us to store a truly empty value in the
1399 * environment (like in UNIX).
1400 * * we don't have to deal with RTL globals, bugs and leaks.
1401 * * Much faster.
1402 * Why you may want to enable USE_WIN32_RTL_ENV:
1403 * * environ[] and RTL functions will not reflect changes,
1404 * which might be an issue if extensions want to access
1405 * the env. via RTL. This cuts both ways, since RTL will
1406 * not see changes made by extensions that call the Win32
1407 * functions directly, either.
1408 * GSAR 97-06-07
1409 */
1410 SetEnvironmentVariable(nam,val);
1411
1412#endif
1413}
1414
1415#endif /* WIN32 */
1416
1417I32
8ac85365 1418setenv_getix(char *nam)
3e3baf6d
TB
1419{
1420 register I32 i, len = strlen(nam);
1421
1422 for (i = 0; environ[i]; i++) {
1423 if (
1424#ifdef WIN32
1425 strnicmp(environ[i],nam,len) == 0
1426#else
1427 strnEQ(environ[i],nam,len)
1428#endif
1429 && environ[i][len] == '=')
1430 break; /* strnEQ must come first to avoid */
1431 } /* potential SEGV's */
1432 return i;
68dc0745
PP
1433}
1434
a0d0e21e 1435#endif /* !VMS */
378cc40b 1436
16d20bd9 1437#ifdef UNLINK_ALL_VERSIONS
79072805 1438I32
378cc40b
LW
1439unlnk(f) /* unlink all versions of a file */
1440char *f;
1441{
79072805 1442 I32 i;
378cc40b
LW
1443
1444 for (i = 0; unlink(f) >= 0; i++) ;
1445 return i ? 0 : -1;
1446}
1447#endif
1448
85e6fe83 1449#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 1450char *
7c0587c8 1451my_bcopy(from,to,len)
378cc40b
LW
1452register char *from;
1453register char *to;
79072805 1454register I32 len;
378cc40b
LW
1455{
1456 char *retval = to;
1457
7c0587c8
LW
1458 if (from - to >= 0) {
1459 while (len--)
1460 *to++ = *from++;
1461 }
1462 else {
1463 to += len;
1464 from += len;
1465 while (len--)
faf8582f 1466 *(--to) = *(--from);
7c0587c8 1467 }
378cc40b
LW
1468 return retval;
1469}
ffed7fef 1470#endif
378cc40b 1471
fc36a67e
PP
1472#ifndef HAS_MEMSET
1473void *
1474my_memset(loc,ch,len)
1475register char *loc;
1476register I32 ch;
1477register I32 len;
1478{
1479 char *retval = loc;
1480
1481 while (len--)
1482 *loc++ = ch;
1483 return retval;
1484}
1485#endif
1486
7c0587c8 1487#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 1488char *
7c0587c8 1489my_bzero(loc,len)
378cc40b 1490register char *loc;
79072805 1491register I32 len;
378cc40b
LW
1492{
1493 char *retval = loc;
1494
1495 while (len--)
1496 *loc++ = 0;
1497 return retval;
1498}
1499#endif
7c0587c8 1500
36477c24 1501#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 1502I32
7c0587c8 1503my_memcmp(s1,s2,len)
36477c24
PP
1504char *s1;
1505char *s2;
79072805 1506register I32 len;
7c0587c8 1507{
36477c24
PP
1508 register U8 *a = (U8 *)s1;
1509 register U8 *b = (U8 *)s2;
79072805 1510 register I32 tmp;
7c0587c8
LW
1511
1512 while (len--) {
36477c24 1513 if (tmp = *a++ - *b++)
7c0587c8
LW
1514 return tmp;
1515 }
1516 return 0;
1517}
36477c24 1518#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 1519
4633a7c4 1520#if defined(I_STDARG) || defined(I_VARARGS)
fe14fcc3 1521#ifndef HAS_VPRINTF
a687059c 1522
85e6fe83 1523#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1524char *
1525#else
1526int
1527#endif
1528vsprintf(dest, pat, args)
71be2cbc
PP
1529char *dest;
1530const char *pat;
1531char *args;
a687059c
LW
1532{
1533 FILE fakebuf;
1534
1535 fakebuf._ptr = dest;
1536 fakebuf._cnt = 32767;
35c8bce7
LW
1537#ifndef _IOSTRG
1538#define _IOSTRG 0
1539#endif
a687059c
LW
1540 fakebuf._flag = _IOWRT|_IOSTRG;
1541 _doprnt(pat, args, &fakebuf); /* what a kludge */
1542 (void)putc('\0', &fakebuf);
85e6fe83 1543#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1544 return(dest);
1545#else
1546 return 0; /* perl doesn't use return value */
1547#endif
1548}
1549
fe14fcc3 1550#endif /* HAS_VPRINTF */
4633a7c4 1551#endif /* I_VARARGS || I_STDARGS */
a687059c
LW
1552
1553#ifdef MYSWAP
ffed7fef 1554#if BYTEORDER != 0x4321
a687059c 1555short
748a9306 1556#ifndef CAN_PROTOTYPE
a687059c
LW
1557my_swap(s)
1558short s;
748a9306
LW
1559#else
1560my_swap(short s)
1561#endif
a687059c
LW
1562{
1563#if (BYTEORDER & 1) == 0
1564 short result;
1565
1566 result = ((s & 255) << 8) + ((s >> 8) & 255);
1567 return result;
1568#else
1569 return s;
1570#endif
1571}
1572
1573long
748a9306
LW
1574#ifndef CAN_PROTOTYPE
1575my_htonl(l)
a687059c 1576register long l;
748a9306
LW
1577#else
1578my_htonl(long l)
1579#endif
a687059c
LW
1580{
1581 union {
1582 long result;
ffed7fef 1583 char c[sizeof(long)];
a687059c
LW
1584 } u;
1585
ffed7fef 1586#if BYTEORDER == 0x1234
a687059c
LW
1587 u.c[0] = (l >> 24) & 255;
1588 u.c[1] = (l >> 16) & 255;
1589 u.c[2] = (l >> 8) & 255;
1590 u.c[3] = l & 255;
1591 return u.result;
1592#else
ffed7fef 1593#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1594 croak("Unknown BYTEORDER\n");
a687059c 1595#else
79072805
LW
1596 register I32 o;
1597 register I32 s;
a687059c 1598
ffed7fef
LW
1599 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1600 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW
1601 }
1602 return u.result;
1603#endif
1604#endif
1605}
1606
1607long
748a9306
LW
1608#ifndef CAN_PROTOTYPE
1609my_ntohl(l)
a687059c 1610register long l;
748a9306
LW
1611#else
1612my_ntohl(long l)
1613#endif
a687059c
LW
1614{
1615 union {
1616 long l;
ffed7fef 1617 char c[sizeof(long)];
a687059c
LW
1618 } u;
1619
ffed7fef 1620#if BYTEORDER == 0x1234
a687059c
LW
1621 u.c[0] = (l >> 24) & 255;
1622 u.c[1] = (l >> 16) & 255;
1623 u.c[2] = (l >> 8) & 255;
1624 u.c[3] = l & 255;
1625 return u.l;
1626#else
ffed7fef 1627#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1628 croak("Unknown BYTEORDER\n");
a687059c 1629#else
79072805
LW
1630 register I32 o;
1631 register I32 s;
a687059c
LW
1632
1633 u.l = l;
1634 l = 0;
ffed7fef
LW
1635 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1636 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW
1637 }
1638 return l;
1639#endif
1640#endif
1641}
1642
ffed7fef 1643#endif /* BYTEORDER != 0x4321 */
988174c1
LW
1644#endif /* MYSWAP */
1645
1646/*
1647 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
1648 * If these functions are defined,
1649 * the BYTEORDER is neither 0x1234 nor 0x4321.
1650 * However, this is not assumed.
1651 * -DWS
1652 */
1653
1654#define HTOV(name,type) \
1655 type \
1656 name (n) \
1657 register type n; \
1658 { \
1659 union { \
1660 type value; \
1661 char c[sizeof(type)]; \
1662 } u; \
79072805
LW
1663 register I32 i; \
1664 register I32 s; \
988174c1
LW
1665 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1666 u.c[i] = (n >> s) & 0xFF; \
1667 } \
1668 return u.value; \
1669 }
1670
1671#define VTOH(name,type) \
1672 type \
1673 name (n) \
1674 register type n; \
1675 { \
1676 union { \
1677 type value; \
1678 char c[sizeof(type)]; \
1679 } u; \
79072805
LW
1680 register I32 i; \
1681 register I32 s; \
988174c1
LW
1682 u.value = n; \
1683 n = 0; \
1684 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1685 n += (u.c[i] & 0xFF) << s; \
1686 } \
1687 return n; \
1688 }
1689
1690#if defined(HAS_HTOVS) && !defined(htovs)
1691HTOV(htovs,short)
1692#endif
1693#if defined(HAS_HTOVL) && !defined(htovl)
1694HTOV(htovl,long)
1695#endif
1696#if defined(HAS_VTOHS) && !defined(vtohs)
1697VTOH(vtohs,short)
1698#endif
1699#if defined(HAS_VTOHL) && !defined(vtohl)
1700VTOH(vtohl,long)
1701#endif
a687059c 1702
5f05dabc
PP
1703 /* VMS' my_popen() is in VMS.c, same with OS/2. */
1704#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS)
760ac839 1705PerlIO *
8ac85365 1706my_popen(char *cmd, char *mode)
a687059c
LW
1707{
1708 int p[2];
8ac85365 1709 register I32 This, that;
79072805
LW
1710 register I32 pid;
1711 SV *sv;
1738f5c4 1712 I32 doexec = strNE(cmd,"-");
a687059c 1713
ddcf38b7
IZ
1714#ifdef OS2
1715 if (doexec) {
1716 return my_syspopen(cmd,mode);
1717 }
1718#endif
a687059c
LW
1719 if (pipe(p) < 0)
1720 return Nullfp;
8ac85365
NIS
1721 This = (*mode == 'w');
1722 that = !This;
bbce6d69
PP
1723 if (doexec && tainting) {
1724 taint_env();
1725 taint_proper("Insecure %s%s", "EXEC");
d48672a2 1726 }
a687059c
LW
1727 while ((pid = (doexec?vfork():fork())) < 0) {
1728 if (errno != EAGAIN) {
8ac85365 1729 close(p[This]);
a687059c 1730 if (!doexec)
463ee0b2 1731 croak("Can't fork");
a687059c
LW
1732 return Nullfp;
1733 }
1734 sleep(5);
1735 }
1736 if (pid == 0) {
79072805
LW
1737 GV* tmpgv;
1738
a687059c 1739#define THIS that
8ac85365 1740#define THAT This
a687059c
LW
1741 close(p[THAT]);
1742 if (p[THIS] != (*mode == 'r')) {
1743 dup2(p[THIS], *mode == 'r');
1744 close(p[THIS]);
1745 }
1746 if (doexec) {
a0d0e21e 1747#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW
1748 int fd;
1749
1750#ifndef NOFILE
1751#define NOFILE 20
1752#endif
d48672a2 1753 for (fd = maxsysfd + 1; fd < NOFILE; fd++)
ae986130
LW
1754 close(fd);
1755#endif
a687059c
LW
1756 do_exec(cmd); /* may or may not use the shell */
1757 _exit(1);
1758 }
de3bb511 1759 /*SUPPRESS 560*/
85e6fe83 1760 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
1e422769 1761 sv_setiv(GvSV(tmpgv), (IV)getpid());
9f68db38 1762 forkprocess = 0;
463ee0b2 1763 hv_clear(pidstatus); /* we have no children */
a687059c
LW
1764 return Nullfp;
1765#undef THIS
1766#undef THAT
1767 }
62b28dd9 1768 do_execfree(); /* free any memory malloced by child on vfork */
a687059c 1769 close(p[that]);
8ac85365
NIS
1770 if (p[that] < p[This]) {
1771 dup2(p[This], p[that]);
1772 close(p[This]);
1773 p[This] = p[that];
62b28dd9 1774 }
8ac85365 1775 sv = *av_fetch(fdpid,p[This],TRUE);
a0d0e21e 1776 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 1777 SvIVX(sv) = pid;
a687059c 1778 forkprocess = pid;
8ac85365 1779 return PerlIO_fdopen(p[This], mode);
a687059c 1780}
7c0587c8 1781#else
55497cff 1782#if defined(atarist) || defined(DJGPP)
7c0587c8 1783FILE *popen();
760ac839 1784PerlIO *
79072805 1785my_popen(cmd,mode)
7c0587c8
LW
1786char *cmd;
1787char *mode;
1788{
760ac839 1789 /* Needs work for PerlIO ! */
55497cff
PP
1790 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
1791 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW
1792}
1793#endif
1794
1795#endif /* !DOSISH */
a687059c 1796
748a9306 1797#ifdef DUMP_FDS
79072805 1798dump_fds(s)
ae986130
LW
1799char *s;
1800{
1801 int fd;
1802 struct stat tmpstatbuf;
1803
760ac839 1804 PerlIO_printf(PerlIO_stderr(),"%s", s);
ae986130 1805 for (fd = 0; fd < 32; fd++) {
a0d0e21e 1806 if (Fstat(fd,&tmpstatbuf) >= 0)
760ac839 1807 PerlIO_printf(PerlIO_stderr()," %d",fd);
ae986130 1808 }
760ac839 1809 PerlIO_printf(PerlIO_stderr(),"\n");
ae986130
LW
1810}
1811#endif
1812
fe14fcc3 1813#ifndef HAS_DUP2
fec02dd3 1814int
a687059c
LW
1815dup2(oldfd,newfd)
1816int oldfd;
1817int newfd;
1818{
a0d0e21e 1819#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD
1820 if (oldfd == newfd)
1821 return oldfd;
62b28dd9 1822 close(newfd);
fec02dd3 1823 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 1824#else
fc36a67e
PP
1825#define DUP2_MAX_FDS 256
1826 int fdtmp[DUP2_MAX_FDS];
79072805 1827 I32 fdx = 0;
ae986130
LW
1828 int fd;
1829
fe14fcc3 1830 if (oldfd == newfd)
fec02dd3 1831 return oldfd;
a687059c 1832 close(newfd);
fc36a67e
PP
1833 /* good enough for low fd's... */
1834 while ((fd = dup(oldfd)) != newfd && fd >= 0) {
1835 if (fdx >= DUP2_MAX_FDS) {
1836 close(fd);
1837 fd = -1;
1838 break;
1839 }
ae986130 1840 fdtmp[fdx++] = fd;
fc36a67e 1841 }
ae986130
LW
1842 while (fdx > 0)
1843 close(fdtmp[--fdx]);
fec02dd3 1844 return fd;
62b28dd9 1845#endif
a687059c
LW
1846}
1847#endif
1848
ff68c719
PP
1849
1850#ifdef HAS_SIGACTION
1851
1852Sighandler_t
8ac85365 1853rsignal(int signo, Sighandler_t handler)
ff68c719
PP
1854{
1855 struct sigaction act, oact;
1856
1857 act.sa_handler = handler;
1858 sigemptyset(&act.sa_mask);
1859 act.sa_flags = 0;
1860#ifdef SA_RESTART
1861 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
1862#endif
1863 if (sigaction(signo, &act, &oact) == -1)
36477c24 1864 return SIG_ERR;
ff68c719 1865 else
36477c24 1866 return oact.sa_handler;
ff68c719
PP
1867}
1868
1869Sighandler_t
8ac85365 1870rsignal_state(int signo)
ff68c719
PP
1871{
1872 struct sigaction oact;
1873
1874 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
1875 return SIG_ERR;
1876 else
1877 return oact.sa_handler;
1878}
1879
1880int
8ac85365 1881rsignal_save(int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719
PP
1882{
1883 struct sigaction act;
1884
1885 act.sa_handler = handler;
1886 sigemptyset(&act.sa_mask);
1887 act.sa_flags = 0;
1888#ifdef SA_RESTART
1889 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
1890#endif
1891 return sigaction(signo, &act, save);
1892}
1893
1894int
8ac85365 1895rsignal_restore(int signo, Sigsave_t *save)
ff68c719
PP
1896{
1897 return sigaction(signo, save, (struct sigaction *)NULL);
1898}
1899
1900#else /* !HAS_SIGACTION */
1901
1902Sighandler_t
1903rsignal(signo, handler)
1904int signo;
1905Sighandler_t handler;
1906{
1907 return signal(signo, handler);
1908}
1909
1910static int sig_trapped;
1911
1912static
1913Signal_t
1914sig_trap(signo)
1915int signo;
1916{
1917 sig_trapped++;
1918}
1919
1920Sighandler_t
1921rsignal_state(signo)
1922int signo;
1923{
1924 Sighandler_t oldsig;
1925
1926 sig_trapped = 0;
1927 oldsig = signal(signo, sig_trap);
1928 signal(signo, oldsig);
1929 if (sig_trapped)
1930 kill(getpid(), signo);
1931 return oldsig;
1932}
1933
1934int
1935rsignal_save(signo, handler, save)
1936int signo;
1937Sighandler_t handler;
1938Sigsave_t *save;
1939{
1940 *save = signal(signo, handler);
1941 return (*save == SIG_ERR) ? -1 : 0;
1942}
1943
1944int
36477c24 1945rsignal_restore(signo, save)
ff68c719
PP
1946int signo;
1947Sigsave_t *save;
1948{
1949 return (signal(signo, *save) == SIG_ERR) ? -1 : 0;
1950}
1951
1952#endif /* !HAS_SIGACTION */
1953
5f05dabc
PP
1954 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
1955#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS)
79072805 1956I32
8ac85365 1957my_pclose(FILE *ptr)
a687059c 1958{
ff68c719 1959 Sigsave_t hstat, istat, qstat;
a687059c 1960 int status;
a0d0e21e 1961 SV **svp;
20188a90 1962 int pid;
03136e13
CS
1963 bool close_failed;
1964 int saved_errno;
1965#ifdef VMS
1966 int saved_vaxc_errno;
1967#endif
a687059c 1968
760ac839 1969 svp = av_fetch(fdpid,PerlIO_fileno(ptr),TRUE);
748a9306 1970 pid = (int)SvIVX(*svp);
a0d0e21e
LW
1971 SvREFCNT_dec(*svp);
1972 *svp = &sv_undef;
ddcf38b7
IZ
1973#ifdef OS2
1974 if (pid == -1) { /* Opened by popen. */
1975 return my_syspclose(ptr);
1976 }
1977#endif
03136e13
CS
1978 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
1979 saved_errno = errno;
1980#ifdef VMS
1981 saved_vaxc_errno = vaxc$errno;
1982#endif
1983 }
7c0587c8
LW
1984#ifdef UTS
1985 if(kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
1986#endif
ff68c719
PP
1987 rsignal_save(SIGHUP, SIG_IGN, &hstat);
1988 rsignal_save(SIGINT, SIG_IGN, &istat);
1989 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306
LW
1990 do {
1991 pid = wait4pid(pid, &status, 0);
1992 } while (pid == -1 && errno == EINTR);
ff68c719
PP
1993 rsignal_restore(SIGHUP, &hstat);
1994 rsignal_restore(SIGINT, &istat);
1995 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS
1996 if (close_failed) {
1997 SETERRNO(saved_errno, saved_vaxc_errno);
1998 return -1;
1999 }
2000 return(pid < 0 ? pid : status == 0 ? 0 : (errno = 0, status));
20188a90 2001}
4633a7c4
LW
2002#endif /* !DOSISH */
2003
2004#if !defined(DOSISH) || defined(OS2)
79072805 2005I32
8ac85365 2006wait4pid(int pid, int *statusp, int flags)
20188a90 2007{
79072805
LW
2008 SV *sv;
2009 SV** svp;
fc36a67e 2010 char spid[TYPE_CHARS(int)];
20188a90
LW
2011
2012 if (!pid)
2013 return -1;
20188a90
LW
2014 if (pid > 0) {
2015 sprintf(spid, "%d", pid);
79072805
LW
2016 svp = hv_fetch(pidstatus,spid,strlen(spid),FALSE);
2017 if (svp && *svp != &sv_undef) {
463ee0b2 2018 *statusp = SvIVX(*svp);
748a9306 2019 (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2020 return pid;
2021 }
2022 }
2023 else {
79072805 2024 HE *entry;
20188a90 2025
79072805
LW
2026 hv_iterinit(pidstatus);
2027 if (entry = hv_iternext(pidstatus)) {
a0d0e21e 2028 pid = atoi(hv_iterkey(entry,(I32*)statusp));
79072805 2029 sv = hv_iterval(pidstatus,entry);
463ee0b2 2030 *statusp = SvIVX(sv);
20188a90 2031 sprintf(spid, "%d", pid);
748a9306 2032 (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2033 return pid;
2034 }
2035 }
79072805 2036#ifdef HAS_WAITPID
367f3c24
IZ
2037# ifdef HAS_WAITPID_RUNTIME
2038 if (!HAS_WAITPID_RUNTIME)
2039 goto hard_way;
2040# endif
79072805 2041 return waitpid(pid,statusp,flags);
367f3c24
IZ
2042#endif
2043#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2044 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ
2045#endif
2046#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2047 hard_way:
a0d0e21e
LW
2048 {
2049 I32 result;
2050 if (flags)
2051 croak("Can't do waitpid with flags");
2052 else {
2053 while ((result = wait(statusp)) != pid && pid > 0 && result >= 0)
2054 pidgone(result,*statusp);
2055 if (result < 0)
2056 *statusp = -1;
2057 }
2058 return result;
a687059c
LW
2059 }
2060#endif
a687059c 2061}
7c0587c8 2062#endif /* !DOSISH */
a687059c 2063
7c0587c8 2064void
de3bb511 2065/*SUPPRESS 590*/
8ac85365 2066pidgone(int pid, int status)
a687059c 2067{
79072805 2068 register SV *sv;
fc36a67e 2069 char spid[TYPE_CHARS(int)];
a687059c 2070
20188a90 2071 sprintf(spid, "%d", pid);
79072805 2072 sv = *hv_fetch(pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2073 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2074 SvIVX(sv) = status;
20188a90 2075 return;
a687059c
LW
2076}
2077
55497cff 2078#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2079int pclose();
ddcf38b7
IZ
2080#ifdef HAS_FORK
2081int /* Cannot prototype with I32
2082 in os2ish.h. */
2083my_syspclose(ptr)
2084#else
79072805
LW
2085I32
2086my_pclose(ptr)
ddcf38b7 2087#endif
760ac839 2088PerlIO *ptr;
a687059c 2089{
760ac839
LW
2090 /* Needs work for PerlIO ! */
2091 FILE *f = PerlIO_findFILE(ptr);
2092 I32 result = pclose(f);
2093 PerlIO_releaseFILE(ptr,f);
2094 return result;
a687059c 2095}
7c0587c8 2096#endif
9f68db38
LW
2097
2098void
8ac85365 2099repeatcpy(register char *to, register char *from, I32 len, register I32 count)
9f68db38 2100{
79072805 2101 register I32 todo;
9f68db38
LW
2102 register char *frombase = from;
2103
2104 if (len == 1) {
2105 todo = *from;
2106 while (count-- > 0)
2107 *to++ = todo;
2108 return;
2109 }
2110 while (count-- > 0) {
2111 for (todo = len; todo > 0; todo--) {
2112 *to++ = *from++;
2113 }
2114 from = frombase;
2115 }
2116}
0f85fab0
LW
2117
2118#ifndef CASTNEGFLOAT
463ee0b2 2119U32
79072805 2120cast_ulong(f)
0f85fab0
LW
2121double f;
2122{
2123 long along;
2124
27e2fb84 2125#if CASTFLAGS & 2
34de22dd
LW
2126# define BIGDOUBLE 2147483648.0
2127 if (f >= BIGDOUBLE)
2128 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2129#endif
0f85fab0
LW
2130 if (f >= 0.0)
2131 return (unsigned long)f;
2132 along = (long)f;
2133 return (unsigned long)along;
2134}
ed6116ce
LW
2135# undef BIGDOUBLE
2136#endif
2137
2138#ifndef CASTI32
5d94fbed 2139
5d94fbed
AD
2140/* Unfortunately, on some systems the cast_uv() function doesn't
2141 work with the system-supplied definition of ULONG_MAX. The
2142 comparison (f >= ULONG_MAX) always comes out true. It must be a
2143 problem with the compiler constant folding.
2144
2145 In any case, this workaround should be fine on any two's complement
2146 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2147 ccflags.
2148 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2149*/
1eb770ff
PP
2150
2151/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2152 of LONG_(MIN/MAX).
2153 -- Kenneth Albanowski <kjahds@kjahds.com>
2154*/
2155
20cec16a
PP
2156#ifndef MY_UV_MAX
2157# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD
2158#endif
2159
ed6116ce
LW
2160I32
2161cast_i32(f)
2162double f;
2163{
20cec16a
PP
2164 if (f >= I32_MAX)
2165 return (I32) I32_MAX;
2166 if (f <= I32_MIN)
2167 return (I32) I32_MIN;
ed6116ce
LW
2168 return (I32) f;
2169}
a0d0e21e
LW
2170
2171IV
2172cast_iv(f)
2173double f;
2174{
20cec16a
PP
2175 if (f >= IV_MAX)
2176 return (IV) IV_MAX;
2177 if (f <= IV_MIN)
2178 return (IV) IV_MIN;
a0d0e21e
LW
2179 return (IV) f;
2180}
5d94fbed
AD
2181
2182UV
2183cast_uv(f)
2184double f;
2185{
20cec16a
PP
2186 if (f >= MY_UV_MAX)
2187 return (UV) MY_UV_MAX;
5d94fbed
AD
2188 return (UV) f;
2189}
2190
0f85fab0 2191#endif
62b28dd9 2192
fe14fcc3 2193#ifndef HAS_RENAME
79072805 2194I32
62b28dd9
LW
2195same_dirent(a,b)
2196char *a;
2197char *b;
2198{
93a17b20
LW
2199 char *fa = strrchr(a,'/');
2200 char *fb = strrchr(b,'/');
62b28dd9
LW
2201 struct stat tmpstatbuf1;
2202 struct stat tmpstatbuf2;
46fc3d4c 2203 SV *tmpsv = sv_newmortal();
62b28dd9
LW
2204
2205 if (fa)
2206 fa++;
2207 else
2208 fa = a;
2209 if (fb)
2210 fb++;
2211 else
2212 fb = b;
2213 if (strNE(a,b))
2214 return FALSE;
2215 if (fa == a)
46fc3d4c 2216 sv_setpv(tmpsv, ".");
62b28dd9 2217 else
46fc3d4c
PP
2218 sv_setpvn(tmpsv, a, fa - a);
2219 if (Stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW
2220 return FALSE;
2221 if (fb == b)
46fc3d4c 2222 sv_setpv(tmpsv, ".");
62b28dd9 2223 else
46fc3d4c
PP
2224 sv_setpvn(tmpsv, b, fb - b);
2225 if (Stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW
2226 return FALSE;
2227 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2228 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2229}
fe14fcc3
LW
2230#endif /* !HAS_RENAME */
2231
55497cff 2232UV
8ac85365 2233scan_oct(char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2234{
2235 register char *s = start;
55497cff
PP
2236 register UV retval = 0;
2237 bool overflowed = FALSE;
fe14fcc3 2238
748a9306 2239 while (len && *s >= '0' && *s <= '7') {
55497cff
PP
2240 register UV n = retval << 3;
2241 if (!overflowed && (n >> 3) != retval) {
2242 warn("Integer overflow in octal number");
2243 overflowed = TRUE;
2244 }
2245 retval = n | (*s++ - '0');
748a9306 2246 len--;
fe14fcc3 2247 }
748a9306
LW
2248 if (dowarn && len && (*s == '8' || *s == '9'))
2249 warn("Illegal octal digit ignored");
fe14fcc3
LW
2250 *retlen = s - start;
2251 return retval;
2252}
2253
71be2cbc 2254UV
8ac85365 2255scan_hex(char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2256{
2257 register char *s = start;
55497cff
PP
2258 register UV retval = 0;
2259 bool overflowed = FALSE;
fe14fcc3
LW
2260 char *tmp;
2261
93a17b20 2262 while (len-- && *s && (tmp = strchr(hexdigit, *s))) {
55497cff
PP
2263 register UV n = retval << 4;
2264 if (!overflowed && (n >> 4) != retval) {
2265 warn("Integer overflow in hex number");
2266 overflowed = TRUE;
2267 }
2268 retval = n | (tmp - hexdigit) & 15;
fe14fcc3
LW
2269 s++;
2270 }
2271 *retlen = s - start;
2272 return retval;
2273}
760ac839 2274
11343788 2275#ifdef USE_THREADS
12ca11f6
MB
2276#ifdef FAKE_THREADS
2277/* Very simplistic scheduler for now */
2278void
2279schedule(void)
2280{
c7848ba1 2281 thr = thr->i.next_run;
12ca11f6
MB
2282}
2283
2284void
2285perl_cond_init(cp)
2286perl_cond *cp;
2287{
2288 *cp = 0;
2289}
2290
2291void
2292perl_cond_signal(cp)
2293perl_cond *cp;
2294{
2295 perl_thread t;
2296 perl_cond cond = *cp;
2297
2298 if (!cond)
2299 return;
2300 t = cond->thread;
2301 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
2302 t->i.next_run = thr->i.next_run;
2303 thr->i.next_run->i.prev_run = t;
2304 t->i.prev_run = thr;
2305 thr->i.next_run = t;
2306 thr->i.wait_queue = 0;
12ca11f6
MB
2307 /* Remove from the wait queue */
2308 *cp = cond->next;
2309 Safefree(cond);
2310}
2311
2312void
2313perl_cond_broadcast(cp)
2314perl_cond *cp;
2315{
2316 perl_thread t;
2317 perl_cond cond, cond_next;
2318
2319 for (cond = *cp; cond; cond = cond_next) {
2320 t = cond->thread;
2321 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
2322 t->i.next_run = thr->i.next_run;
2323 thr->i.next_run->i.prev_run = t;
2324 t->i.prev_run = thr;
2325 thr->i.next_run = t;
2326 thr->i.wait_queue = 0;
12ca11f6
MB
2327 /* Remove from the wait queue */
2328 cond_next = cond->next;
2329 Safefree(cond);
2330 }
2331 *cp = 0;
2332}
2333
2334void
2335perl_cond_wait(cp)
2336perl_cond *cp;
2337{
2338 perl_cond cond;
2339
c7848ba1 2340 if (thr->i.next_run == thr)
12ca11f6
MB
2341 croak("panic: perl_cond_wait called by last runnable thread");
2342
0f15f207 2343 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB
2344 cond->thread = thr;
2345 cond->next = *cp;
2346 *cp = cond;
c7848ba1 2347 thr->i.wait_queue = cond;
12ca11f6 2348 /* Remove ourselves from runnable queue */
c7848ba1
MB
2349 thr->i.next_run->i.prev_run = thr->i.prev_run;
2350 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB
2351}
2352#endif /* FAKE_THREADS */
2353
11343788
MB
2354#ifdef OLD_PTHREADS_API
2355struct thread *
2356getTHR _((void))
2357{
2358 pthread_addr_t t;
2359
2360 if (pthread_getspecific(thr_key, &t))
2361 croak("panic: pthread_getspecific");
2362 return (struct thread *) t;
2363}
2364#endif /* OLD_PTHREADS_API */
f93b4edd
MB
2365
2366MAGIC *
8ac85365 2367condpair_magic(SV *sv)
f93b4edd
MB
2368{
2369 MAGIC *mg;
2370
2371 SvUPGRADE(sv, SVt_PVMG);
2372 mg = mg_find(sv, 'm');
2373 if (!mg) {
2374 condpair_t *cp;
2375
2376 New(53, cp, 1, condpair_t);
2377 MUTEX_INIT(&cp->mutex);
2378 COND_INIT(&cp->owner_cond);
2379 COND_INIT(&cp->cond);
2380 cp->owner = 0;
2381 MUTEX_LOCK(&sv_mutex);
2382 mg = mg_find(sv, 'm');
2383 if (mg) {
2384 /* someone else beat us to initialising it */
2385 MUTEX_UNLOCK(&sv_mutex);
2386 MUTEX_DESTROY(&cp->mutex);
2387 COND_DESTROY(&cp->owner_cond);
2388 COND_DESTROY(&cp->cond);
2389 Safefree(cp);
2390 }
2391 else {
2392 sv_magic(sv, Nullsv, 'm', 0, 0);
2393 mg = SvMAGIC(sv);
2394 mg->mg_ptr = (char *)cp;
2395 mg->mg_len = sizeof(cp);
2396 MUTEX_UNLOCK(&sv_mutex);
bc1f4c86 2397 DEBUG_L(WITH_THR(PerlIO_printf(PerlIO_stderr(),
c7848ba1 2398 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB
2399 }
2400 }
2401 return mg;
2402}
a863c7d1
MB
2403
2404/*
2405 * Make a new perl thread structure using t as a prototype. If t is NULL
2406 * then this is the initial main thread and we have to bootstrap carefully.
2407 * Some of the fields for the new thread are copied from the prototype
2408 * thread, t, so t should not be running in perl at the time this function
2409 * is called. The usual case, where t is the thread calling new_struct_thread,
2410 * clearly satisfies this constraint.
2411 */
2412struct thread *
2413new_struct_thread(t)
2414struct thread *t;
2415{
2416 struct thread *thr;
2417 XPV *xpv;
2418 SV *sv;
2419
2420 Newz(53, thr, 1, struct thread);
2421 cvcache = newHV();
2422 curcop = &compiling;
2423 thr->specific = newAV();
2424 thr->flags = THRf_R_JOINABLE;
2425 MUTEX_INIT(&thr->mutex);
2426 if (t) {
2427 oursv = newSVpv("", 0);
2428 SvGROW(oursv, sizeof(struct thread) + 1);
2429 SvCUR_set(oursv, sizeof(struct thread));
2430 thr = (struct thread *) SvPVX(sv);
2431 } else {
2432 /* Handcraft thrsv similarly to mess_sv */
2433 New(53, thrsv, 1, SV);
2434 Newz(53, xpv, 1, XPV);
2435 SvFLAGS(thrsv) = SVt_PV;
2436 SvANY(thrsv) = (void*)xpv;
2437 SvREFCNT(thrsv) = 1 << 30; /* practically infinite */
2438 SvPVX(thrsv) = (char*)thr;
2439 SvCUR_set(thrsv, sizeof(thr));
2440 SvLEN_set(thrsv, sizeof(thr));
2441 *SvEND(thrsv) = '\0'; /* in the trailing_nul field */
2442 oursv = thrsv;
2443 }
2444 if (t) {
2445 curcop = t->Tcurcop; /* XXX As good a guess as any? */
2446 defstash = t->Tdefstash; /* XXX maybe these should */
2447 curstash = t->Tcurstash; /* always be set to main? */
2448 /* top_env? */
2449 /* runlevel */
2450 tainted = t->Ttainted;
2451 curpm = t->Tcurpm; /* XXX No PMOP ref count */
2452 nrs = newSVsv(t->Tnrs);
2453 rs = newSVsv(t->Trs);
2454 last_in_gv = (GV*)SvREFCNT_inc(t->Tlast_in_gv);
2455 ofslen = t->Tofslen;
2456 ofs = savepvn(t->Tofs, ofslen);
2457 defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
2458 chopset = t->Tchopset;
2459 formtarget = newSVsv(t->Tformtarget);
2460 bodytarget = newSVsv(t->Tbodytarget);
2461 toptarget = newSVsv(t->Ttoptarget);
2462 keys = newSVpv("", 0);
2463 } else {
2464 curcop = &compiling;
2465 chopset = " \n-";
2466 }
2467 MUTEX_LOCK(&threads_mutex);
2468 nthreads++;
2469 thr->tid = threadnum++;
2470 if (t) {
2471 thr->next = t->next;
2472 thr->prev = t;
2473 t->next = thr;
2474 thr->next->prev = thr;
2475 } else {
2476 thr->next = thr;
2477 thr->prev = thr;
2478 }
2479 MUTEX_UNLOCK(&threads_mutex);
2480
2481#ifdef HAVE_THREAD_INTERN
2482 init_thread_intern(thr);
2483#else
2484 thr->self = pthread_self();
2485#endif /* HAVE_THREAD_INTERN */
2486 SET_THR(thr);
2487 if (!t) {
2488 /*
2489 * These must come after the SET_THR because sv_setpvn does
2490 * SvTAINT and the taint fields require dTHR.
2491 */
2492 toptarget = NEWSV(0,0);
2493 sv_upgrade(toptarget, SVt_PVFM);
2494 sv_setpvn(toptarget, "", 0);
2495 bodytarget = NEWSV(0,0);
2496 sv_upgrade(bodytarget, SVt_PVFM);
2497 sv_setpvn(bodytarget, "", 0);
2498 formtarget = bodytarget;
2499 }
2500 return thr;
2501}
2502
2503PADOFFSET
2504key_create()
2505{
2506 char *s;
2507 STRLEN len;
2508 PADOFFSET i;
2509 MUTEX_LOCK(&keys_mutex);
2510 s = SvPV(keys, len);
2511 for (i = 0; i < len; i++) {
2512 if (!s[i]) {
2513 s[i] = 1;
2514 break;
2515 }
2516 }
2517 if (i == len)
2518 sv_catpvn(keys, "\1", 1);
2519 MUTEX_UNLOCK(&keys_mutex);
2520 DEBUG_L(PerlIO_printf(PerlIO_stderr(), "key_create: %d\n", (int)i));
2521 return i;
2522}
2523
2524void
2525key_destroy(key)
2526PADOFFSET key;
2527{
2528 char *s;
2529 MUTEX_LOCK(&keys_mutex);
2530 s = SvPVX(keys);
2531 s[key] = 0;
2532 MUTEX_UNLOCK(&keys_mutex);
2533 DEBUG_L(PerlIO_printf(PerlIO_stderr(), "key_destroy: %d\n", (int)key));
2534}
11343788 2535#endif /* USE_THREADS */
760ac839
LW
2536
2537#ifdef HUGE_VAL
2538/*
2539 * This hack is to force load of "huge" support from libm.a
2540 * So it is in perl for (say) POSIX to use.
2541 * Needed for SunOS with Sun's 'acc' for example.
2542 */
2543double
8ac85365 2544Perl_huge(void)
760ac839
LW
2545{
2546 return HUGE_VAL;
2547}
2548#endif