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Fix NUL-termination bug in delimcpy()
[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
55497cff 59#ifndef MYMALLOC
de3bb511 60
8d063cd8
LW
61/* paranoid version of malloc */
62
a687059c
LW
63/* NOTE: Do not call the next three routines directly. Use the macros
64 * in handy.h, so that we can easily redefine everything to do tracking of
65 * allocated hunks back to the original New to track down any memory leaks.
20cec16a 66 * XXX This advice seems to be widely ignored :-( --AD August 1996.
a687059c
LW
67 */
68
bd4080b3 69Malloc_t
8d063cd8
LW
70safemalloc(size)
71MEM_SIZE size;
72{
bd4080b3 73 Malloc_t ptr;
55497cff 74#ifdef HAS_64K_LIMIT
62b28dd9 75 if (size > 0xffff) {
760ac839 76 PerlIO_printf(PerlIO_stderr(), "Allocation too large: %lx\n", size) FLUSH;
79072805 77 my_exit(1);
62b28dd9 78 }
55497cff 79#endif /* HAS_64K_LIMIT */
34de22dd
LW
80#ifdef DEBUGGING
81 if ((long)size < 0)
463ee0b2 82 croak("panic: malloc");
34de22dd 83#endif
8d063cd8 84 ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */
79072805 85#if !(defined(I286) || defined(atarist))
760ac839 86 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) malloc %ld bytes\n",ptr,an++,(long)size));
79072805 87#else
760ac839 88 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) malloc %ld bytes\n",ptr,an++,(long)size));
8d063cd8
LW
89#endif
90 if (ptr != Nullch)
91 return ptr;
7c0587c8
LW
92 else if (nomemok)
93 return Nullch;
8d063cd8 94 else {
760ac839 95 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
79072805 96 my_exit(1);
8d063cd8
LW
97 }
98 /*NOTREACHED*/
99}
100
101/* paranoid version of realloc */
102
bd4080b3 103Malloc_t
8d063cd8 104saferealloc(where,size)
bd4080b3 105Malloc_t where;
8d063cd8
LW
106MEM_SIZE size;
107{
bd4080b3 108 Malloc_t ptr;
ecfc5424 109#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
bd4080b3 110 Malloc_t realloc();
ecfc5424 111#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 112
55497cff 113#ifdef HAS_64K_LIMIT
5f05dabc
PP
114 if (size > 0xffff) {
115 PerlIO_printf(PerlIO_stderr(),
116 "Reallocation too large: %lx\n", size) FLUSH;
117 my_exit(1);
118 }
55497cff 119#endif /* HAS_64K_LIMIT */
378cc40b 120 if (!where)
463ee0b2 121 croak("Null realloc");
34de22dd
LW
122#ifdef DEBUGGING
123 if ((long)size < 0)
463ee0b2 124 croak("panic: realloc");
34de22dd 125#endif
8d063cd8 126 ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */
79072805
LW
127
128#if !(defined(I286) || defined(atarist))
129 DEBUG_m( {
760ac839
LW
130 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) rfree\n",where,an++);
131 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) realloc %ld bytes\n",ptr,an++,(long)size);
79072805
LW
132 } )
133#else
134 DEBUG_m( {
760ac839
LW
135 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) rfree\n",where,an++);
136 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) realloc %ld bytes\n",ptr,an++,(long)size);
79072805 137 } )
8d063cd8 138#endif
79072805 139
8d063cd8
LW
140 if (ptr != Nullch)
141 return ptr;
7c0587c8
LW
142 else if (nomemok)
143 return Nullch;
8d063cd8 144 else {
760ac839 145 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
79072805 146 my_exit(1);
8d063cd8
LW
147 }
148 /*NOTREACHED*/
149}
150
151/* safe version of free */
152
54310121 153Free_t
8d063cd8 154safefree(where)
bd4080b3 155Malloc_t where;
8d063cd8 156{
79072805 157#if !(defined(I286) || defined(atarist))
760ac839 158 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%x: (%05d) free\n",where,an++));
79072805 159#else
760ac839 160 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) free\n",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
1050c9ca
PP
171safecalloc(count, size)
172MEM_SIZE count;
173MEM_SIZE size;
174{
bd4080b3 175 Malloc_t ptr;
1050c9ca 176
55497cff 177#ifdef HAS_64K_LIMIT
5f05dabc
PP
178 if (size * count > 0xffff) {
179 PerlIO_printf(PerlIO_stderr(),
180 "Allocation too large: %lx\n", size * count) FLUSH;
181 my_exit(1);
182 }
55497cff 183#endif /* HAS_64K_LIMIT */
1050c9ca
PP
184#ifdef DEBUGGING
185 if ((long)size < 0 || (long)count < 0)
186 croak("panic: calloc");
187#endif
0b7c1c42
GS
188 size *= count;
189 ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */
1050c9ca 190#if !(defined(I286) || defined(atarist))
760ac839 191 DEBUG_m(PerlIO_printf(PerlIO_stderr(), "0x%x: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
1050c9ca 192#else
760ac839 193 DEBUG_m(PerlIO_printf(PerlIO_stderr(), "0x%lx: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
1050c9ca 194#endif
1050c9ca
PP
195 if (ptr != Nullch) {
196 memset((void*)ptr, 0, size);
197 return ptr;
198 }
199 else if (nomemok)
200 return Nullch;
201 else {
760ac839 202 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
1050c9ca
PP
203 my_exit(1);
204 }
205 /*NOTREACHED*/
206}
207
55497cff 208#endif /* !MYMALLOC */
de3bb511 209
a687059c
LW
210#ifdef LEAKTEST
211
212#define ALIGN sizeof(long)
8d063cd8 213
bd4080b3 214Malloc_t
a687059c 215safexmalloc(x,size)
79072805 216I32 x;
a687059c 217MEM_SIZE size;
8d063cd8 218{
bd4080b3 219 register Malloc_t where;
8d063cd8 220
a687059c
LW
221 where = safemalloc(size + ALIGN);
222 xcount[x]++;
223 where[0] = x % 100;
224 where[1] = x / 100;
225 return where + ALIGN;
8d063cd8 226}
8d063cd8 227
bd4080b3 228Malloc_t
a687059c 229safexrealloc(where,size)
bd4080b3 230Malloc_t where;
a687059c
LW
231MEM_SIZE size;
232{
bd4080b3 233 register Malloc_t new = saferealloc(where - ALIGN, size + ALIGN);
a0d0e21e 234 return new + ALIGN;
a687059c
LW
235}
236
237void
238safexfree(where)
bd4080b3 239Malloc_t where;
a687059c 240{
79072805 241 I32 x;
a687059c
LW
242
243 if (!where)
244 return;
245 where -= ALIGN;
246 x = where[0] + 100 * where[1];
247 xcount[x]--;
248 safefree(where);
249}
250
bd4080b3 251Malloc_t
1050c9ca
PP
252safexcalloc(x,count,size)
253I32 x;
254MEM_SIZE count;
255MEM_SIZE size;
256{
bd4080b3 257 register Malloc_t where;
1050c9ca
PP
258
259 where = safexmalloc(x, size * count + ALIGN);
260 xcount[x]++;
261 memset((void*)where + ALIGN, 0, size * count);
262 where[0] = x % 100;
263 where[1] = x / 100;
264 return where + ALIGN;
265}
266
7c0587c8 267static void
a687059c 268xstat()
8d063cd8 269{
79072805 270 register I32 i;
8d063cd8 271
a687059c 272 for (i = 0; i < MAXXCOUNT; i++) {
de3bb511 273 if (xcount[i] > lastxcount[i]) {
760ac839 274 PerlIO_printf(PerlIO_stderr(),"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]);
a687059c 275 lastxcount[i] = xcount[i];
8d063cd8
LW
276 }
277 }
8d063cd8 278}
a687059c
LW
279
280#endif /* LEAKTEST */
8d063cd8
LW
281
282/* copy a string up to some (non-backslashed) delimiter, if any */
283
284char *
fc36a67e 285delimcpy(to, toend, from, fromend, delim, retlen)
62b28dd9 286register char *to;
fc36a67e 287register char *toend;
62b28dd9 288register char *from;
a687059c 289register char *fromend;
a0d0e21e 290register int delim;
79072805 291I32 *retlen;
8d063cd8 292{
fc36a67e
PP
293 register I32 tolen;
294 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW
295 if (*from == '\\') {
296 if (from[1] == delim)
297 from++;
fc36a67e
PP
298 else {
299 if (to < toend)
300 *to++ = *from;
301 tolen++;
302 from++;
303 }
378cc40b 304 }
bedebaa5 305 else if (*from == delim)
8d063cd8 306 break;
fc36a67e
PP
307 if (to < toend)
308 *to++ = *from;
8d063cd8 309 }
bedebaa5
CS
310 if (to < toend)
311 *to = '\0';
fc36a67e 312 *retlen = tolen;
8d063cd8
LW
313 return from;
314}
315
316/* return ptr to little string in big string, NULL if not found */
378cc40b 317/* This routine was donated by Corey Satten. */
8d063cd8
LW
318
319char *
320instr(big, little)
378cc40b
LW
321register char *big;
322register char *little;
323{
324 register char *s, *x;
79072805 325 register I32 first;
378cc40b 326
a687059c
LW
327 if (!little)
328 return big;
329 first = *little++;
378cc40b
LW
330 if (!first)
331 return big;
332 while (*big) {
333 if (*big++ != first)
334 continue;
335 for (x=big,s=little; *s; /**/ ) {
336 if (!*x)
337 return Nullch;
338 if (*s++ != *x++) {
339 s--;
340 break;
341 }
342 }
343 if (!*s)
344 return big-1;
345 }
346 return Nullch;
347}
8d063cd8 348
a687059c
LW
349/* same as instr but allow embedded nulls */
350
351char *
352ninstr(big, bigend, little, lend)
353register char *big;
354register char *bigend;
355char *little;
356char *lend;
8d063cd8 357{
a687059c 358 register char *s, *x;
79072805 359 register I32 first = *little;
a687059c 360 register char *littleend = lend;
378cc40b 361
a0d0e21e 362 if (!first && little >= littleend)
a687059c 363 return big;
de3bb511
LW
364 if (bigend - big < littleend - little)
365 return Nullch;
a687059c
LW
366 bigend -= littleend - little++;
367 while (big <= bigend) {
368 if (*big++ != first)
369 continue;
370 for (x=big,s=little; s < littleend; /**/ ) {
371 if (*s++ != *x++) {
372 s--;
373 break;
374 }
375 }
376 if (s >= littleend)
377 return big-1;
378cc40b 378 }
a687059c
LW
379 return Nullch;
380}
381
382/* reverse of the above--find last substring */
383
384char *
385rninstr(big, bigend, little, lend)
386register char *big;
387char *bigend;
388char *little;
389char *lend;
390{
391 register char *bigbeg;
392 register char *s, *x;
79072805 393 register I32 first = *little;
a687059c
LW
394 register char *littleend = lend;
395
a0d0e21e 396 if (!first && little >= littleend)
a687059c
LW
397 return bigend;
398 bigbeg = big;
399 big = bigend - (littleend - little++);
400 while (big >= bigbeg) {
401 if (*big-- != first)
402 continue;
403 for (x=big+2,s=little; s < littleend; /**/ ) {
404 if (*s++ != *x++) {
405 s--;
406 break;
407 }
408 }
409 if (s >= littleend)
410 return big+1;
378cc40b 411 }
a687059c 412 return Nullch;
378cc40b 413}
a687059c 414
bbce6d69
PP
415/*
416 * Set up for a new ctype locale.
417 */
55497cff 418void
bbce6d69
PP
419perl_new_ctype(newctype)
420 char *newctype;
ef7eada9 421{
36477c24
PP
422#ifdef USE_LOCALE_CTYPE
423
bbce6d69 424 int i;
ef7eada9 425
bbce6d69
PP
426 for (i = 0; i < 256; i++) {
427 if (isUPPER_LC(i))
428 fold_locale[i] = toLOWER_LC(i);
429 else if (isLOWER_LC(i))
430 fold_locale[i] = toUPPER_LC(i);
431 else
432 fold_locale[i] = i;
433 }
bbce6d69 434
36477c24
PP
435#endif /* USE_LOCALE_CTYPE */
436}
bbce6d69
PP
437
438/*
439 * Set up for a new collation locale.
440 */
441void
442perl_new_collate(newcoll)
443 char *newcoll;
444{
36477c24
PP
445#ifdef USE_LOCALE_COLLATE
446
bbce6d69
PP
447 if (! newcoll) {
448 if (collation_name) {
449 ++collation_ix;
450 Safefree(collation_name);
451 collation_name = NULL;
452 collation_standard = TRUE;
bbce6d69
PP
453 collxfrm_base = 0;
454 collxfrm_mult = 2;
bbce6d69
PP
455 }
456 return;
457 }
458
459 if (! collation_name || strNE(collation_name, newcoll)) {
460 ++collation_ix;
461 Safefree(collation_name);
462 collation_name = savepv(newcoll);
ff68c719 463 collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 464
bbce6d69
PP
465 {
466 /* 2: at most so many chars ('a', 'b'). */
467 /* 50: surely no system expands a char more. */
468#define XFRMBUFSIZE (2 * 50)
469 char xbuf[XFRMBUFSIZE];
470 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
471 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
472 SSize_t mult = fb - fa;
473 if (mult < 1)
474 croak("strxfrm() gets absurd");
475 collxfrm_base = (fa > mult) ? (fa - mult) : 0;
476 collxfrm_mult = mult;
477 }
bbce6d69 478 }
bbce6d69 479
36477c24
PP
480#endif /* USE_LOCALE_COLLATE */
481}
bbce6d69
PP
482
483/*
484 * Set up for a new numeric locale.
485 */
486void
487perl_new_numeric(newnum)
488 char *newnum;
489{
36477c24
PP
490#ifdef USE_LOCALE_NUMERIC
491
bbce6d69
PP
492 if (! newnum) {
493 if (numeric_name) {
494 Safefree(numeric_name);
495 numeric_name = NULL;
496 numeric_standard = TRUE;
497 numeric_local = TRUE;
498 }
499 return;
500 }
501
502 if (! numeric_name || strNE(numeric_name, newnum)) {
503 Safefree(numeric_name);
504 numeric_name = savepv(newnum);
ff68c719 505 numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
bbce6d69
PP
506 numeric_local = TRUE;
507 }
36477c24
PP
508
509#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
510}
511
512void
36477c24 513perl_set_numeric_standard()
bbce6d69 514{
5f05dabc
PP
515#ifdef USE_LOCALE_NUMERIC
516
bbce6d69
PP
517 if (! numeric_standard) {
518 setlocale(LC_NUMERIC, "C");
519 numeric_standard = TRUE;
520 numeric_local = FALSE;
521 }
5f05dabc
PP
522
523#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
524}
525
526void
36477c24 527perl_set_numeric_local()
bbce6d69 528{
5f05dabc
PP
529#ifdef USE_LOCALE_NUMERIC
530
bbce6d69
PP
531 if (! numeric_local) {
532 setlocale(LC_NUMERIC, numeric_name);
533 numeric_standard = FALSE;
534 numeric_local = TRUE;
535 }
bbce6d69 536
36477c24 537#endif /* USE_LOCALE_NUMERIC */
5f05dabc 538}
36477c24 539
bbce6d69 540
36477c24
PP
541/*
542 * Initialize locale awareness.
543 */
f0c5b223 544int
1050c9ca 545perl_init_i18nl10n(printwarn)
f0c5b223
TB
546 int printwarn;
547{
548 int ok = 1;
549 /* returns
550 * 1 = set ok or not applicable,
551 * 0 = fallback to C locale,
552 * -1 = fallback to C locale failed
553 */
bbce6d69 554
36477c24 555#ifdef USE_LOCALE
bbce6d69 556
36477c24 557#ifdef USE_LOCALE_CTYPE
bbce6d69 558 char *curctype = NULL;
36477c24
PP
559#endif /* USE_LOCALE_CTYPE */
560#ifdef USE_LOCALE_COLLATE
bbce6d69 561 char *curcoll = NULL;
36477c24
PP
562#endif /* USE_LOCALE_COLLATE */
563#ifdef USE_LOCALE_NUMERIC
bbce6d69 564 char *curnum = NULL;
36477c24 565#endif /* USE_LOCALE_NUMERIC */
02b32252 566 char *lc_all = getenv("LC_ALL");
5f05dabc 567 char *lang = getenv("LANG");
bbce6d69 568 bool setlocale_failure = FALSE;
f0c5b223 569
02b32252
CS
570#ifdef LOCALE_ENVIRON_REQUIRED
571
572 /*
573 * Ultrix setlocale(..., "") fails if there are no environment
574 * variables from which to get a locale name.
575 */
576
577 bool done = FALSE;
578
579#ifdef LC_ALL
580 if (lang) {
581 if (setlocale(LC_ALL, ""))
582 done = TRUE;
583 else
584 setlocale_failure = TRUE;
585 }
586 if (!setlocale_failure)
587#endif /* LC_ALL */
588 {
589#ifdef USE_LOCALE_CTYPE
590 if (! (curctype = setlocale(LC_CTYPE,
591 (!done && (lang || getenv("LC_CTYPE")))
592 ? "" : Nullch)))
593 setlocale_failure = TRUE;
594#endif /* USE_LOCALE_CTYPE */
595#ifdef USE_LOCALE_COLLATE
596 if (! (curcoll = setlocale(LC_COLLATE,
597 (!done && (lang || getenv("LC_COLLATE")))
598 ? "" : Nullch)))
599 setlocale_failure = TRUE;
600#endif /* USE_LOCALE_COLLATE */
601#ifdef USE_LOCALE_NUMERIC
602 if (! (curnum = setlocale(LC_NUMERIC,
603 (!done && (lang || getenv("LC_NUMERIC")))
604 ? "" : Nullch)))
605 setlocale_failure = TRUE;
606#endif /* USE_LOCALE_NUMERIC */
607 }
608
609#else /* !LOCALE_ENVIRON_REQUIRED */
610
bbce6d69 611#ifdef LC_ALL
5f05dabc 612
bbce6d69
PP
613 if (! setlocale(LC_ALL, ""))
614 setlocale_failure = TRUE;
5f05dabc
PP
615 else {
616#ifdef USE_LOCALE_CTYPE
617 curctype = setlocale(LC_CTYPE, Nullch);
618#endif /* USE_LOCALE_CTYPE */
619#ifdef USE_LOCALE_COLLATE
620 curcoll = setlocale(LC_COLLATE, Nullch);
621#endif /* USE_LOCALE_COLLATE */
622#ifdef USE_LOCALE_NUMERIC
623 curnum = setlocale(LC_NUMERIC, Nullch);
624#endif /* USE_LOCALE_NUMERIC */
625 }
626
627#else /* !LC_ALL */
bbce6d69 628
36477c24 629#ifdef USE_LOCALE_CTYPE
5f05dabc 630 if (! (curctype = setlocale(LC_CTYPE, "")))
bbce6d69 631 setlocale_failure = TRUE;
36477c24
PP
632#endif /* USE_LOCALE_CTYPE */
633#ifdef USE_LOCALE_COLLATE
5f05dabc 634 if (! (curcoll = setlocale(LC_COLLATE, "")))
bbce6d69 635 setlocale_failure = TRUE;
36477c24
PP
636#endif /* USE_LOCALE_COLLATE */
637#ifdef USE_LOCALE_NUMERIC
5f05dabc 638 if (! (curnum = setlocale(LC_NUMERIC, "")))
bbce6d69 639 setlocale_failure = TRUE;
36477c24 640#endif /* USE_LOCALE_NUMERIC */
bbce6d69 641
5f05dabc
PP
642#endif /* LC_ALL */
643
02b32252
CS
644#endif /* !LOCALE_ENVIRON_REQUIRED */
645
5f05dabc
PP
646 if (setlocale_failure) {
647 char *p;
648 bool locwarn = (printwarn > 1 ||
649 printwarn &&
650 (!(p = getenv("PERL_BADLANG")) || atoi(p)));
20cec16a 651
5f05dabc
PP
652 if (locwarn) {
653#ifdef LC_ALL
654
655 PerlIO_printf(PerlIO_stderr(),
656 "perl: warning: Setting locale failed.\n");
657
658#else /* !LC_ALL */
659
ef7eada9 660 PerlIO_printf(PerlIO_stderr(),
bbce6d69 661 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 662#ifdef USE_LOCALE_CTYPE
bbce6d69 663 if (! curctype)
5f05dabc 664 PerlIO_printf(PerlIO_stderr(), "LC_CTYPE ");
36477c24
PP
665#endif /* USE_LOCALE_CTYPE */
666#ifdef USE_LOCALE_COLLATE
bbce6d69 667 if (! curcoll)
5f05dabc 668 PerlIO_printf(PerlIO_stderr(), "LC_COLLATE ");
36477c24
PP
669#endif /* USE_LOCALE_COLLATE */
670#ifdef USE_LOCALE_NUMERIC
bbce6d69 671 if (! curnum)
5f05dabc 672 PerlIO_printf(PerlIO_stderr(), "LC_NUMERIC ");
36477c24 673#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
674 PerlIO_printf(PerlIO_stderr(), "\n");
675
5f05dabc
PP
676#endif /* LC_ALL */
677
760ac839 678 PerlIO_printf(PerlIO_stderr(),
bbce6d69 679 "perl: warning: Please check that your locale settings:\n");
ef7eada9
JH
680
681 PerlIO_printf(PerlIO_stderr(),
bbce6d69
PP
682 "\tLC_ALL = %c%s%c,\n",
683 lc_all ? '"' : '(',
684 lc_all ? lc_all : "unset",
685 lc_all ? '"' : ')');
5f05dabc
PP
686
687 {
688 char **e;
689 for (e = environ; *e; e++) {
690 if (strnEQ(*e, "LC_", 3)
691 && strnNE(*e, "LC_ALL=", 7)
692 && (p = strchr(*e, '=')))
693 PerlIO_printf(PerlIO_stderr(), "\t%.*s = \"%s\",\n",
694 (p - *e), *e, p + 1);
695 }
696 }
697
ef7eada9 698 PerlIO_printf(PerlIO_stderr(),
bbce6d69 699 "\tLANG = %c%s%c\n",
5f05dabc 700 lang ? '"' : '(',
bbce6d69
PP
701 lang ? lang : "unset",
702 lang ? '"' : ')');
ef7eada9 703
bbce6d69
PP
704 PerlIO_printf(PerlIO_stderr(),
705 " are supported and installed on your system.\n");
5f05dabc 706 }
ef7eada9 707
5f05dabc
PP
708#ifdef LC_ALL
709
710 if (setlocale(LC_ALL, "C")) {
711 if (locwarn)
712 PerlIO_printf(PerlIO_stderr(),
713 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 714 ok = 0;
ef7eada9 715 }
5f05dabc
PP
716 else {
717 if (locwarn)
718 PerlIO_printf(PerlIO_stderr(),
719 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
720 ok = -1;
721 }
bbce6d69 722
5f05dabc
PP
723#else /* ! LC_ALL */
724
725 if (0
36477c24 726#ifdef USE_LOCALE_CTYPE
5f05dabc 727 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24
PP
728#endif /* USE_LOCALE_CTYPE */
729#ifdef USE_LOCALE_COLLATE
5f05dabc 730 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24
PP
731#endif /* USE_LOCALE_COLLATE */
732#ifdef USE_LOCALE_NUMERIC
5f05dabc 733 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 734#endif /* USE_LOCALE_NUMERIC */
5f05dabc
PP
735 )
736 {
737 if (locwarn)
bbce6d69 738 PerlIO_printf(PerlIO_stderr(),
5f05dabc
PP
739 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
740 ok = -1;
bbce6d69 741 }
5f05dabc 742
bbce6d69 743#endif /* ! LC_ALL */
5f05dabc
PP
744
745#ifdef USE_LOCALE_CTYPE
746 curctype = setlocale(LC_CTYPE, Nullch);
747#endif /* USE_LOCALE_CTYPE */
748#ifdef USE_LOCALE_COLLATE
749 curcoll = setlocale(LC_COLLATE, Nullch);
750#endif /* USE_LOCALE_COLLATE */
751#ifdef USE_LOCALE_NUMERIC
752 curnum = setlocale(LC_NUMERIC, Nullch);
753#endif /* USE_LOCALE_NUMERIC */
ef7eada9
JH
754 }
755
36477c24 756#ifdef USE_LOCALE_CTYPE
bbce6d69 757 perl_new_ctype(curctype);
36477c24 758#endif /* USE_LOCALE_CTYPE */
bbce6d69 759
36477c24 760#ifdef USE_LOCALE_COLLATE
bbce6d69 761 perl_new_collate(curcoll);
36477c24 762#endif /* USE_LOCALE_COLLATE */
bbce6d69 763
36477c24 764#ifdef USE_LOCALE_NUMERIC
bbce6d69 765 perl_new_numeric(curnum);
36477c24 766#endif /* USE_LOCALE_NUMERIC */
ef7eada9 767
36477c24 768#endif /* USE_LOCALE */
ef7eada9 769
f0c5b223
TB
770 return ok;
771}
772
bbce6d69
PP
773/* Backwards compatibility. */
774int
775perl_init_i18nl14n(printwarn)
776 int printwarn;
777{
5f05dabc 778 return perl_init_i18nl10n(printwarn);
bbce6d69 779}
ef7eada9 780
36477c24 781#ifdef USE_LOCALE_COLLATE
ef7eada9 782
bbce6d69
PP
783/*
784 * mem_collxfrm() is a bit like strxfrm() but with two important
785 * differences. First, it handles embedded NULs. Second, it allocates
786 * a bit more memory than needed for the transformed data itself.
787 * The real transformed data begins at offset sizeof(collationix).
788 * Please see sv_collxfrm() to see how this is used.
789 */
790char *
791mem_collxfrm(s, len, xlen)
792 const char *s;
793 STRLEN len;
794 STRLEN *xlen;
795{
796 char *xbuf;
797 STRLEN xalloc, xin, xout;
798
799 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
800 /* the +1 is for the terminating NUL. */
801
802 xalloc = sizeof(collation_ix) + collxfrm_base + (collxfrm_mult * len) + 1;
803 New(171, xbuf, xalloc, char);
804 if (! xbuf)
805 goto bad;
806
807 *(U32*)xbuf = collation_ix;
808 xout = sizeof(collation_ix);
809 for (xin = 0; xin < len; ) {
810 SSize_t xused;
811
812 for (;;) {
813 xused = strxfrm(xbuf + xout, s + xin, xalloc - xout);
814 if (xused == -1)
815 goto bad;
816 if (xused < xalloc - xout)
817 break;
818 xalloc = (2 * xalloc) + 1;
819 Renew(xbuf, xalloc, char);
820 if (! xbuf)
821 goto bad;
822 }
ef7eada9 823
bbce6d69
PP
824 xin += strlen(s + xin) + 1;
825 xout += xused;
826
827 /* Embedded NULs are understood but silently skipped
828 * because they make no sense in locale collation. */
829 }
ef7eada9 830
bbce6d69
PP
831 xbuf[xout] = '\0';
832 *xlen = xout - sizeof(collation_ix);
833 return xbuf;
834
835 bad:
836 Safefree(xbuf);
837 *xlen = 0;
838 return NULL;
ef7eada9
JH
839}
840
36477c24 841#endif /* USE_LOCALE_COLLATE */
bbce6d69 842
378cc40b 843void
bbce6d69 844fbm_compile(sv)
79072805 845SV *sv;
378cc40b 846{
a687059c
LW
847 register unsigned char *s;
848 register unsigned char *table;
79072805
LW
849 register U32 i;
850 register U32 len = SvCUR(sv);
851 I32 rarest = 0;
852 U32 frequency = 256;
853
748a9306
LW
854 if (len > 255)
855 return; /* can't have offsets that big */
79072805 856 Sv_Grow(sv,len+258);
463ee0b2 857 table = (unsigned char*)(SvPVX(sv) + len + 1);
a687059c
LW
858 s = table - 2;
859 for (i = 0; i < 256; i++) {
378cc40b
LW
860 table[i] = len;
861 }
862 i = 0;
463ee0b2 863 while (s >= (unsigned char*)(SvPVX(sv)))
a687059c 864 {
bbce6d69
PP
865 if (table[*s] == len)
866 table[*s] = i;
378cc40b
LW
867 s--,i++;
868 }
79072805 869 sv_upgrade(sv, SVt_PVBM);
bbce6d69 870 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 871 SvVALID_on(sv);
378cc40b 872
463ee0b2 873 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69
PP
874 for (i = 0; i < len; i++) {
875 if (freq[s[i]] < frequency) {
876 rarest = i;
877 frequency = freq[s[i]];
378cc40b
LW
878 }
879 }
79072805
LW
880 BmRARE(sv) = s[rarest];
881 BmPREVIOUS(sv) = rarest;
760ac839 882 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW
883}
884
378cc40b 885char *
79072805 886fbm_instr(big, bigend, littlestr)
a687059c
LW
887unsigned char *big;
888register unsigned char *bigend;
79072805 889SV *littlestr;
378cc40b 890{
a687059c 891 register unsigned char *s;
79072805
LW
892 register I32 tmp;
893 register I32 littlelen;
a687059c
LW
894 register unsigned char *little;
895 register unsigned char *table;
896 register unsigned char *olds;
897 register unsigned char *oldlittle;
378cc40b 898
79072805 899 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
a0d0e21e
LW
900 STRLEN len;
901 char *l = SvPV(littlestr,len);
902 if (!len)
d48672a2 903 return (char*)big;
a0d0e21e 904 return ninstr((char*)big,(char*)bigend, l, l + len);
d48672a2 905 }
378cc40b 906
79072805
LW
907 littlelen = SvCUR(littlestr);
908 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
0f85fab0
LW
909 if (littlelen > bigend - big)
910 return Nullch;
463ee0b2 911 little = (unsigned char*)SvPVX(littlestr);
bbce6d69 912 s = bigend - littlelen;
36477c24 913 if (*s == *little && memEQ((char*)s,(char*)little,littlelen))
bbce6d69
PP
914 return (char*)s; /* how sweet it is */
915 else if (bigend[-1] == '\n' && little[littlelen-1] != '\n'
916 && s > big) {
917 s--;
36477c24 918 if (*s == *little && memEQ((char*)s,(char*)little,littlelen))
bbce6d69 919 return (char*)s;
a687059c 920 }
bbce6d69 921 return Nullch;
a687059c 922 }
463ee0b2 923 table = (unsigned char*)(SvPVX(littlestr) + littlelen + 1);
62b28dd9
LW
924 if (--littlelen >= bigend - big)
925 return Nullch;
926 s = big + littlelen;
a687059c 927 oldlittle = little = table - 2;
bbce6d69
PP
928 if (s < bigend) {
929 top2:
930 /*SUPPRESS 560*/
931 if (tmp = table[*s]) {
62b28dd9 932#ifdef POINTERRIGOR
bbce6d69
PP
933 if (bigend - s > tmp) {
934 s += tmp;
935 goto top2;
936 }
62b28dd9 937#else
bbce6d69
PP
938 if ((s += tmp) < bigend)
939 goto top2;
62b28dd9 940#endif
bbce6d69 941 return Nullch;
a687059c 942 }
bbce6d69
PP
943 else {
944 tmp = littlelen; /* less expensive than calling strncmp() */
945 olds = s;
946 while (tmp--) {
947 if (*--s == *--little)
948 continue;
949 s = olds + 1; /* here we pay the price for failure */
950 little = oldlittle;
951 if (s < bigend) /* fake up continue to outer loop */
62b28dd9 952 goto top2;
62b28dd9 953 return Nullch;
a687059c 954 }
bbce6d69 955 return (char *)s;
378cc40b
LW
956 }
957 }
958 return Nullch;
959}
960
961char *
962screaminstr(bigstr, littlestr)
79072805
LW
963SV *bigstr;
964SV *littlestr;
378cc40b 965{
a687059c
LW
966 register unsigned char *s, *x;
967 register unsigned char *big;
79072805
LW
968 register I32 pos;
969 register I32 previous;
970 register I32 first;
a687059c
LW
971 register unsigned char *little;
972 register unsigned char *bigend;
973 register unsigned char *littleend;
378cc40b 974
79072805 975 if ((pos = screamfirst[BmRARE(littlestr)]) < 0)
378cc40b 976 return Nullch;
463ee0b2 977 little = (unsigned char *)(SvPVX(littlestr));
79072805 978 littleend = little + SvCUR(littlestr);
378cc40b 979 first = *little++;
79072805 980 previous = BmPREVIOUS(littlestr);
463ee0b2 981 big = (unsigned char *)(SvPVX(bigstr));
79072805 982 bigend = big + SvCUR(bigstr);
378cc40b
LW
983 while (pos < previous) {
984 if (!(pos += screamnext[pos]))
985 return Nullch;
986 }
de3bb511 987#ifdef POINTERRIGOR
bbce6d69
PP
988 do {
989 if (big[pos-previous] != first)
990 continue;
991 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
992 if (x >= bigend)
993 return Nullch;
994 if (*s++ != *x++) {
995 s--;
996 break;
de3bb511 997 }
bbce6d69
PP
998 }
999 if (s == littleend)
1000 return (char *)(big+pos-previous);
1001 } while ( pos += screamnext[pos] );
de3bb511
LW
1002#else /* !POINTERRIGOR */
1003 big -= previous;
bbce6d69
PP
1004 do {
1005 if (big[pos] != first)
1006 continue;
1007 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
1008 if (x >= bigend)
1009 return Nullch;
1010 if (*s++ != *x++) {
1011 s--;
1012 break;
378cc40b 1013 }
bbce6d69
PP
1014 }
1015 if (s == littleend)
1016 return (char *)(big+pos);
1017 } while ( pos += screamnext[pos] );
de3bb511 1018#endif /* POINTERRIGOR */
8d063cd8
LW
1019 return Nullch;
1020}
1021
79072805 1022I32
bbce6d69
PP
1023ibcmp(s1, s2, len)
1024char *s1, *s2;
79072805
LW
1025register I32 len;
1026{
bbce6d69
PP
1027 register U8 *a = (U8 *)s1;
1028 register U8 *b = (U8 *)s2;
79072805 1029 while (len--) {
bbce6d69
PP
1030 if (*a != *b && *a != fold[*b])
1031 return 1;
1032 a++,b++;
1033 }
1034 return 0;
1035}
1036
1037I32
1038ibcmp_locale(s1, s2, len)
1039char *s1, *s2;
1040register I32 len;
1041{
1042 register U8 *a = (U8 *)s1;
1043 register U8 *b = (U8 *)s2;
1044 while (len--) {
1045 if (*a != *b && *a != fold_locale[*b])
1046 return 1;
1047 a++,b++;
79072805
LW
1048 }
1049 return 0;
1050}
1051
8d063cd8
LW
1052/* copy a string to a safe spot */
1053
1054char *
a0d0e21e 1055savepv(sv)
79072805 1056char *sv;
8d063cd8 1057{
a687059c 1058 register char *newaddr;
8d063cd8 1059
79072805
LW
1060 New(902,newaddr,strlen(sv)+1,char);
1061 (void)strcpy(newaddr,sv);
8d063cd8
LW
1062 return newaddr;
1063}
1064
a687059c
LW
1065/* same thing but with a known length */
1066
1067char *
a0d0e21e 1068savepvn(sv, len)
79072805
LW
1069char *sv;
1070register I32 len;
a687059c
LW
1071{
1072 register char *newaddr;
1073
1074 New(903,newaddr,len+1,char);
79072805 1075 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW
1076 newaddr[len] = '\0'; /* is now */
1077 return newaddr;
1078}
1079
fc36a67e
PP
1080/* the SV for form() and mess() is not kept in an arena */
1081
1082static SV *
1083mess_alloc()
1084{
1085 SV *sv;
1086 XPVMG *any;
1087
1088 /* Create as PVMG now, to avoid any upgrading later */
1089 New(905, sv, 1, SV);
1090 Newz(905, any, 1, XPVMG);
1091 SvFLAGS(sv) = SVt_PVMG;
1092 SvANY(sv) = (void*)any;
1093 SvREFCNT(sv) = 1 << 30; /* practically infinite */
1094 return sv;
1095}
1096
a0d0e21e 1097#ifdef I_STDARG
8990e307 1098char *
46fc3d4c 1099form(const char* pat, ...)
a687059c
LW
1100#else
1101/*VARARGS0*/
de3bb511 1102char *
46fc3d4c 1103form(pat, va_alist)
71be2cbc 1104 const char *pat;
46fc3d4c 1105 va_dcl
8990e307
LW
1106#endif
1107{
46fc3d4c
PP
1108 va_list args;
1109#ifdef I_STDARG
1110 va_start(args, pat);
a687059c 1111#else
46fc3d4c 1112 va_start(args);
d48672a2 1113#endif
fc36a67e
PP
1114 if (!mess_sv)
1115 mess_sv = mess_alloc();
1116 sv_vsetpvfn(mess_sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
46fc3d4c 1117 va_end(args);
fc36a67e 1118 return SvPVX(mess_sv);
46fc3d4c 1119}
a687059c 1120
46fc3d4c
PP
1121char *
1122mess(pat, args)
1123 const char *pat;
1124 va_list *args;
1125{
1126 SV *sv;
1127 static char dgd[] = " during global destruction.\n";
1128
46fc3d4c 1129 if (!mess_sv)
fc36a67e 1130 mess_sv = mess_alloc();
46fc3d4c 1131 sv = mess_sv;
fc36a67e 1132 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1133 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
2304df62 1134 if (dirty)
46fc3d4c 1135 sv_catpv(sv, dgd);
2304df62 1136 else {
46fc3d4c 1137 if (curcop->cop_line)
fc36a67e 1138 sv_catpvf(sv, " at %_ line %ld",
46fc3d4c 1139 GvSV(curcop->cop_filegv), (long)curcop->cop_line);
c07a80fd
PP
1140 if (GvIO(last_in_gv) && IoLINES(GvIOp(last_in_gv))) {
1141 bool line_mode = (RsSIMPLE(rs) &&
1142 SvLEN(rs) == 1 && *SvPVX(rs) == '\n');
46fc3d4c
PP
1143 sv_catpvf(sv, ", <%s> %s %ld",
1144 last_in_gv == argvgv ? "" : GvNAME(last_in_gv),
1145 line_mode ? "line" : "chunk",
1146 (long)IoLINES(GvIOp(last_in_gv)));
2304df62 1147 }
46fc3d4c 1148 sv_catpv(sv, ".\n");
a687059c 1149 }
a687059c 1150 }
46fc3d4c 1151 return SvPVX(sv);
a687059c
LW
1152}
1153
ecfc5424 1154#ifdef I_STDARG
36477c24 1155OP *
71be2cbc 1156die(const char* pat, ...)
36477c24
PP
1157#else
1158/*VARARGS0*/
1159OP *
1160die(pat, va_alist)
71be2cbc 1161 const char *pat;
36477c24
PP
1162 va_dcl
1163#endif
1164{
1165 va_list args;
1166 char *message;
035902c7 1167 I32 oldrunlevel = runlevel;
36477c24
PP
1168 int was_in_eval = in_eval;
1169 HV *stash;
1170 GV *gv;
1171 CV *cv;
1172
1173 /* We have to switch back to mainstack or die_where may try to pop
1174 * the eval block from the wrong stack if die is being called from a
1175 * signal handler. - dkindred@cs.cmu.edu */
1176 if (curstack != mainstack) {
1177 dSP;
1178 SWITCHSTACK(curstack, mainstack);
1179 }
1180
1181#ifdef I_STDARG
1182 va_start(args, pat);
1183#else
1184 va_start(args);
1185#endif
1186 message = mess(pat, &args);
1187 va_end(args);
1188
1738f5c4
CS
1189 if (diehook) {
1190 /* sv_2cv might call croak() */
1191 SV *olddiehook = diehook;
1192 ENTER;
1193 SAVESPTR(diehook);
1194 diehook = Nullsv;
1195 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1196 LEAVE;
1197 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1198 dSP;
774d564b
PP
1199 SV *msg;
1200
1201 ENTER;
1202 msg = newSVpv(message, 0);
1203 SvREADONLY_on(msg);
1204 SAVEFREESV(msg);
1738f5c4
CS
1205
1206 PUSHMARK(sp);
1207 XPUSHs(msg);
1208 PUTBACK;
1209 perl_call_sv((SV*)cv, G_DISCARD);
1210
774d564b 1211 LEAVE;
1738f5c4 1212 }
36477c24
PP
1213 }
1214
1215 restartop = die_where(message);
1216 if ((!restartop && was_in_eval) || oldrunlevel > 1)
54310121 1217 JMPENV_JUMP(3);
36477c24
PP
1218 return restartop;
1219}
1220
1221#ifdef I_STDARG
79072805 1222void
71be2cbc 1223croak(const char* pat, ...)
463ee0b2 1224#else
8990e307
LW
1225/*VARARGS0*/
1226void
1227croak(pat, va_alist)
1228 char *pat;
1229 va_dcl
463ee0b2 1230#endif
a687059c
LW
1231{
1232 va_list args;
de3bb511 1233 char *message;
748a9306
LW
1234 HV *stash;
1235 GV *gv;
1236 CV *cv;
a687059c 1237
a0d0e21e 1238#ifdef I_STDARG
8990e307
LW
1239 va_start(args, pat);
1240#else
a687059c 1241 va_start(args);
8990e307 1242#endif
2304df62 1243 message = mess(pat, &args);
a687059c 1244 va_end(args);
20cec16a 1245 if (diehook) {
1738f5c4 1246 /* sv_2cv might call croak() */
20cec16a 1247 SV *olddiehook = diehook;
1738f5c4
CS
1248 ENTER;
1249 SAVESPTR(diehook);
1250 diehook = Nullsv;
20cec16a 1251 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS
1252 LEAVE;
1253 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1254 dSP;
774d564b
PP
1255 SV *msg;
1256
1257 ENTER;
1258 msg = newSVpv(message, 0);
1259 SvREADONLY_on(msg);
1260 SAVEFREESV(msg);
20cec16a
PP
1261
1262 PUSHMARK(sp);
1738f5c4 1263 XPUSHs(msg);
20cec16a
PP
1264 PUTBACK;
1265 perl_call_sv((SV*)cv, G_DISCARD);
36477c24 1266
774d564b 1267 LEAVE;
20cec16a 1268 }
748a9306 1269 }
a0d0e21e
LW
1270 if (in_eval) {
1271 restartop = die_where(message);
54310121 1272 JMPENV_JUMP(3);
a0d0e21e 1273 }
760ac839
LW
1274 PerlIO_puts(PerlIO_stderr(),message);
1275 (void)PerlIO_flush(PerlIO_stderr());
f86702cc 1276 my_failure_exit();
a687059c
LW
1277}
1278
8990e307 1279void
ecfc5424 1280#ifdef I_STDARG
71be2cbc 1281warn(const char* pat,...)
463ee0b2 1282#else
8990e307
LW
1283/*VARARGS0*/
1284warn(pat,va_alist)
71be2cbc 1285 const char *pat;
8990e307 1286 va_dcl
463ee0b2 1287#endif
a687059c
LW
1288{
1289 va_list args;
de3bb511 1290 char *message;
748a9306
LW
1291 HV *stash;
1292 GV *gv;
1293 CV *cv;
a687059c 1294
a0d0e21e 1295#ifdef I_STDARG
8990e307
LW
1296 va_start(args, pat);
1297#else
a687059c 1298 va_start(args);
8990e307 1299#endif
2304df62 1300 message = mess(pat, &args);
a687059c
LW
1301 va_end(args);
1302
20cec16a 1303 if (warnhook) {
1738f5c4 1304 /* sv_2cv might call warn() */
20cec16a 1305 SV *oldwarnhook = warnhook;
1738f5c4
CS
1306 ENTER;
1307 SAVESPTR(warnhook);
1308 warnhook = Nullsv;
20cec16a 1309 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS
1310 LEAVE;
1311 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1312 dSP;
774d564b
PP
1313 SV *msg;
1314
1315 ENTER;
1316 msg = newSVpv(message, 0);
1317 SvREADONLY_on(msg);
1318 SAVEFREESV(msg);
1319
20cec16a 1320 PUSHMARK(sp);
774d564b 1321 XPUSHs(msg);
20cec16a
PP
1322 PUTBACK;
1323 perl_call_sv((SV*)cv, G_DISCARD);
774d564b
PP
1324
1325 LEAVE;
20cec16a
PP
1326 return;
1327 }
748a9306 1328 }
20cec16a 1329 PerlIO_puts(PerlIO_stderr(),message);
a687059c 1330#ifdef LEAKTEST
20cec16a 1331 DEBUG_L(xstat());
a687059c 1332#endif
20cec16a 1333 (void)PerlIO_flush(PerlIO_stderr());
a687059c 1334}
8d063cd8 1335
a0d0e21e 1336#ifndef VMS /* VMS' my_setenv() is in VMS.c */
68dc0745 1337#ifndef _WIN32
8d063cd8 1338void
7c0587c8 1339my_setenv(nam,val)
8d063cd8
LW
1340char *nam, *val;
1341{
79072805 1342 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1343
fe14fcc3 1344 if (environ == origenviron) { /* need we copy environment? */
79072805
LW
1345 I32 j;
1346 I32 max;
fe14fcc3
LW
1347 char **tmpenv;
1348
de3bb511 1349 /*SUPPRESS 530*/
fe14fcc3
LW
1350 for (max = i; environ[max]; max++) ;
1351 New(901,tmpenv, max+2, char*);
1352 for (j=0; j<max; j++) /* copy environment */
a0d0e21e 1353 tmpenv[j] = savepv(environ[j]);
fe14fcc3
LW
1354 tmpenv[max] = Nullch;
1355 environ = tmpenv; /* tell exec where it is now */
1356 }
a687059c 1357 if (!val) {
e5ebf479 1358 Safefree(environ[i]);
a687059c
LW
1359 while (environ[i]) {
1360 environ[i] = environ[i+1];
1361 i++;
1362 }
1363 return;
1364 }
8d063cd8 1365 if (!environ[i]) { /* does not exist yet */
fe14fcc3 1366 Renew(environ, i+2, char*); /* just expand it a bit */
8d063cd8
LW
1367 environ[i+1] = Nullch; /* make sure it's null terminated */
1368 }
fe14fcc3
LW
1369 else
1370 Safefree(environ[i]);
a687059c 1371 New(904, environ[i], strlen(nam) + strlen(val) + 2, char);
62b28dd9 1372#ifndef MSDOS
a687059c 1373 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
62b28dd9
LW
1374#else
1375 /* MS-DOS requires environment variable names to be in uppercase */
fe14fcc3
LW
1376 /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but
1377 * some utilities and applications may break because they only look
1378 * for upper case strings. (Fixed strupr() bug here.)]
1379 */
1380 strcpy(environ[i],nam); strupr(environ[i]);
62b28dd9
LW
1381 (void)sprintf(environ[i] + strlen(nam),"=%s",val);
1382#endif /* MSDOS */
8d063cd8
LW
1383}
1384
79072805
LW
1385I32
1386setenv_getix(nam)
8d063cd8
LW
1387char *nam;
1388{
79072805 1389 register I32 i, len = strlen(nam);
8d063cd8
LW
1390
1391 for (i = 0; environ[i]; i++) {
1392 if (strnEQ(environ[i],nam,len) && environ[i][len] == '=')
1393 break; /* strnEQ must come first to avoid */
1394 } /* potential SEGV's */
1395 return i;
1396}
68dc0745
PP
1397
1398#else /* if _WIN32 */
1399
1400void
1401my_setenv(nam,val)
1402char *nam, *val;
1403{
1404 register char *envstr;
1405 STRLEN namlen = strlen(nam);
1406 STRLEN vallen = strlen(val ? val : "");
1407
fc36a67e 1408 New(904, envstr, namlen + vallen + 3, char);
68dc0745
PP
1409 (void)sprintf(envstr,"%s=%s",nam,val);
1410 if (!vallen) {
1411 /* An attempt to delete the entry.
1412 * We try to fix a Win32 process handling goof: Children
1413 * of the current process will end up seeing the
1414 * grandparent's entry if the current process has never
1415 * modified the entry being deleted. So we call _putenv()
1416 * twice: once to pretend to modify the entry, and the
1417 * second time to actually delete it. GSAR 97-03-19
1418 */
1419 envstr[namlen+1] = 'X'; envstr[namlen+2] = '\0';
1420 (void)_putenv(envstr);
1421 envstr[namlen+1] = '\0';
1422 }
1423 (void)_putenv(envstr);
1424}
1425
1426#endif /* _WIN32 */
a0d0e21e 1427#endif /* !VMS */
378cc40b 1428
16d20bd9 1429#ifdef UNLINK_ALL_VERSIONS
79072805 1430I32
378cc40b
LW
1431unlnk(f) /* unlink all versions of a file */
1432char *f;
1433{
79072805 1434 I32 i;
378cc40b
LW
1435
1436 for (i = 0; unlink(f) >= 0; i++) ;
1437 return i ? 0 : -1;
1438}
1439#endif
1440
85e6fe83 1441#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 1442char *
7c0587c8 1443my_bcopy(from,to,len)
378cc40b
LW
1444register char *from;
1445register char *to;
79072805 1446register I32 len;
378cc40b
LW
1447{
1448 char *retval = to;
1449
7c0587c8
LW
1450 if (from - to >= 0) {
1451 while (len--)
1452 *to++ = *from++;
1453 }
1454 else {
1455 to += len;
1456 from += len;
1457 while (len--)
faf8582f 1458 *(--to) = *(--from);
7c0587c8 1459 }
378cc40b
LW
1460 return retval;
1461}
ffed7fef 1462#endif
378cc40b 1463
fc36a67e
PP
1464#ifndef HAS_MEMSET
1465void *
1466my_memset(loc,ch,len)
1467register char *loc;
1468register I32 ch;
1469register I32 len;
1470{
1471 char *retval = loc;
1472
1473 while (len--)
1474 *loc++ = ch;
1475 return retval;
1476}
1477#endif
1478
7c0587c8 1479#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 1480char *
7c0587c8 1481my_bzero(loc,len)
378cc40b 1482register char *loc;
79072805 1483register I32 len;
378cc40b
LW
1484{
1485 char *retval = loc;
1486
1487 while (len--)
1488 *loc++ = 0;
1489 return retval;
1490}
1491#endif
7c0587c8 1492
36477c24 1493#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 1494I32
7c0587c8 1495my_memcmp(s1,s2,len)
36477c24
PP
1496char *s1;
1497char *s2;
79072805 1498register I32 len;
7c0587c8 1499{
36477c24
PP
1500 register U8 *a = (U8 *)s1;
1501 register U8 *b = (U8 *)s2;
79072805 1502 register I32 tmp;
7c0587c8
LW
1503
1504 while (len--) {
36477c24 1505 if (tmp = *a++ - *b++)
7c0587c8
LW
1506 return tmp;
1507 }
1508 return 0;
1509}
36477c24 1510#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 1511
4633a7c4 1512#if defined(I_STDARG) || defined(I_VARARGS)
fe14fcc3 1513#ifndef HAS_VPRINTF
a687059c 1514
85e6fe83 1515#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1516char *
1517#else
1518int
1519#endif
1520vsprintf(dest, pat, args)
71be2cbc
PP
1521char *dest;
1522const char *pat;
1523char *args;
a687059c
LW
1524{
1525 FILE fakebuf;
1526
1527 fakebuf._ptr = dest;
1528 fakebuf._cnt = 32767;
35c8bce7
LW
1529#ifndef _IOSTRG
1530#define _IOSTRG 0
1531#endif
a687059c
LW
1532 fakebuf._flag = _IOWRT|_IOSTRG;
1533 _doprnt(pat, args, &fakebuf); /* what a kludge */
1534 (void)putc('\0', &fakebuf);
85e6fe83 1535#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1536 return(dest);
1537#else
1538 return 0; /* perl doesn't use return value */
1539#endif
1540}
1541
fe14fcc3 1542#endif /* HAS_VPRINTF */
4633a7c4 1543#endif /* I_VARARGS || I_STDARGS */
a687059c
LW
1544
1545#ifdef MYSWAP
ffed7fef 1546#if BYTEORDER != 0x4321
a687059c 1547short
748a9306 1548#ifndef CAN_PROTOTYPE
a687059c
LW
1549my_swap(s)
1550short s;
748a9306
LW
1551#else
1552my_swap(short s)
1553#endif
a687059c
LW
1554{
1555#if (BYTEORDER & 1) == 0
1556 short result;
1557
1558 result = ((s & 255) << 8) + ((s >> 8) & 255);
1559 return result;
1560#else
1561 return s;
1562#endif
1563}
1564
1565long
748a9306
LW
1566#ifndef CAN_PROTOTYPE
1567my_htonl(l)
a687059c 1568register long l;
748a9306
LW
1569#else
1570my_htonl(long l)
1571#endif
a687059c
LW
1572{
1573 union {
1574 long result;
ffed7fef 1575 char c[sizeof(long)];
a687059c
LW
1576 } u;
1577
ffed7fef 1578#if BYTEORDER == 0x1234
a687059c
LW
1579 u.c[0] = (l >> 24) & 255;
1580 u.c[1] = (l >> 16) & 255;
1581 u.c[2] = (l >> 8) & 255;
1582 u.c[3] = l & 255;
1583 return u.result;
1584#else
ffed7fef 1585#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1586 croak("Unknown BYTEORDER\n");
a687059c 1587#else
79072805
LW
1588 register I32 o;
1589 register I32 s;
a687059c 1590
ffed7fef
LW
1591 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1592 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW
1593 }
1594 return u.result;
1595#endif
1596#endif
1597}
1598
1599long
748a9306
LW
1600#ifndef CAN_PROTOTYPE
1601my_ntohl(l)
a687059c 1602register long l;
748a9306
LW
1603#else
1604my_ntohl(long l)
1605#endif
a687059c
LW
1606{
1607 union {
1608 long l;
ffed7fef 1609 char c[sizeof(long)];
a687059c
LW
1610 } u;
1611
ffed7fef 1612#if BYTEORDER == 0x1234
a687059c
LW
1613 u.c[0] = (l >> 24) & 255;
1614 u.c[1] = (l >> 16) & 255;
1615 u.c[2] = (l >> 8) & 255;
1616 u.c[3] = l & 255;
1617 return u.l;
1618#else
ffed7fef 1619#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1620 croak("Unknown BYTEORDER\n");
a687059c 1621#else
79072805
LW
1622 register I32 o;
1623 register I32 s;
a687059c
LW
1624
1625 u.l = l;
1626 l = 0;
ffed7fef
LW
1627 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1628 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW
1629 }
1630 return l;
1631#endif
1632#endif
1633}
1634
ffed7fef 1635#endif /* BYTEORDER != 0x4321 */
988174c1
LW
1636#endif /* MYSWAP */
1637
1638/*
1639 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
1640 * If these functions are defined,
1641 * the BYTEORDER is neither 0x1234 nor 0x4321.
1642 * However, this is not assumed.
1643 * -DWS
1644 */
1645
1646#define HTOV(name,type) \
1647 type \
1648 name (n) \
1649 register type n; \
1650 { \
1651 union { \
1652 type value; \
1653 char c[sizeof(type)]; \
1654 } u; \
79072805
LW
1655 register I32 i; \
1656 register I32 s; \
988174c1
LW
1657 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1658 u.c[i] = (n >> s) & 0xFF; \
1659 } \
1660 return u.value; \
1661 }
1662
1663#define VTOH(name,type) \
1664 type \
1665 name (n) \
1666 register type n; \
1667 { \
1668 union { \
1669 type value; \
1670 char c[sizeof(type)]; \
1671 } u; \
79072805
LW
1672 register I32 i; \
1673 register I32 s; \
988174c1
LW
1674 u.value = n; \
1675 n = 0; \
1676 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1677 n += (u.c[i] & 0xFF) << s; \
1678 } \
1679 return n; \
1680 }
1681
1682#if defined(HAS_HTOVS) && !defined(htovs)
1683HTOV(htovs,short)
1684#endif
1685#if defined(HAS_HTOVL) && !defined(htovl)
1686HTOV(htovl,long)
1687#endif
1688#if defined(HAS_VTOHS) && !defined(vtohs)
1689VTOH(vtohs,short)
1690#endif
1691#if defined(HAS_VTOHL) && !defined(vtohl)
1692VTOH(vtohl,long)
1693#endif
a687059c 1694
5f05dabc
PP
1695 /* VMS' my_popen() is in VMS.c, same with OS/2. */
1696#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS)
760ac839 1697PerlIO *
79072805 1698my_popen(cmd,mode)
a687059c
LW
1699char *cmd;
1700char *mode;
1701{
1702 int p[2];
79072805
LW
1703 register I32 this, that;
1704 register I32 pid;
1705 SV *sv;
1738f5c4 1706 I32 doexec = strNE(cmd,"-");
a687059c 1707
ddcf38b7
IZ
1708#ifdef OS2
1709 if (doexec) {
1710 return my_syspopen(cmd,mode);
1711 }
1712#endif
a687059c
LW
1713 if (pipe(p) < 0)
1714 return Nullfp;
1715 this = (*mode == 'w');
1716 that = !this;
bbce6d69
PP
1717 if (doexec && tainting) {
1718 taint_env();
1719 taint_proper("Insecure %s%s", "EXEC");
d48672a2 1720 }
a687059c
LW
1721 while ((pid = (doexec?vfork():fork())) < 0) {
1722 if (errno != EAGAIN) {
1723 close(p[this]);
1724 if (!doexec)
463ee0b2 1725 croak("Can't fork");
a687059c
LW
1726 return Nullfp;
1727 }
1728 sleep(5);
1729 }
1730 if (pid == 0) {
79072805
LW
1731 GV* tmpgv;
1732
a687059c
LW
1733#define THIS that
1734#define THAT this
1735 close(p[THAT]);
1736 if (p[THIS] != (*mode == 'r')) {
1737 dup2(p[THIS], *mode == 'r');
1738 close(p[THIS]);
1739 }
1740 if (doexec) {
a0d0e21e 1741#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW
1742 int fd;
1743
1744#ifndef NOFILE
1745#define NOFILE 20
1746#endif
d48672a2 1747 for (fd = maxsysfd + 1; fd < NOFILE; fd++)
ae986130
LW
1748 close(fd);
1749#endif
a687059c
LW
1750 do_exec(cmd); /* may or may not use the shell */
1751 _exit(1);
1752 }
de3bb511 1753 /*SUPPRESS 560*/
85e6fe83 1754 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
1e422769 1755 sv_setiv(GvSV(tmpgv), (IV)getpid());
9f68db38 1756 forkprocess = 0;
463ee0b2 1757 hv_clear(pidstatus); /* we have no children */
a687059c
LW
1758 return Nullfp;
1759#undef THIS
1760#undef THAT
1761 }
62b28dd9 1762 do_execfree(); /* free any memory malloced by child on vfork */
a687059c 1763 close(p[that]);
62b28dd9
LW
1764 if (p[that] < p[this]) {
1765 dup2(p[this], p[that]);
1766 close(p[this]);
1767 p[this] = p[that];
1768 }
79072805 1769 sv = *av_fetch(fdpid,p[this],TRUE);
a0d0e21e 1770 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 1771 SvIVX(sv) = pid;
a687059c 1772 forkprocess = pid;
760ac839 1773 return PerlIO_fdopen(p[this], mode);
a687059c 1774}
7c0587c8 1775#else
55497cff 1776#if defined(atarist) || defined(DJGPP)
7c0587c8 1777FILE *popen();
760ac839 1778PerlIO *
79072805 1779my_popen(cmd,mode)
7c0587c8
LW
1780char *cmd;
1781char *mode;
1782{
760ac839 1783 /* Needs work for PerlIO ! */
55497cff
PP
1784 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
1785 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW
1786}
1787#endif
1788
1789#endif /* !DOSISH */
a687059c 1790
748a9306 1791#ifdef DUMP_FDS
79072805 1792dump_fds(s)
ae986130
LW
1793char *s;
1794{
1795 int fd;
1796 struct stat tmpstatbuf;
1797
760ac839 1798 PerlIO_printf(PerlIO_stderr(),"%s", s);
ae986130 1799 for (fd = 0; fd < 32; fd++) {
a0d0e21e 1800 if (Fstat(fd,&tmpstatbuf) >= 0)
760ac839 1801 PerlIO_printf(PerlIO_stderr()," %d",fd);
ae986130 1802 }
760ac839 1803 PerlIO_printf(PerlIO_stderr(),"\n");
ae986130
LW
1804}
1805#endif
1806
fe14fcc3 1807#ifndef HAS_DUP2
fec02dd3 1808int
a687059c
LW
1809dup2(oldfd,newfd)
1810int oldfd;
1811int newfd;
1812{
a0d0e21e 1813#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD
1814 if (oldfd == newfd)
1815 return oldfd;
62b28dd9 1816 close(newfd);
fec02dd3 1817 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 1818#else
fc36a67e
PP
1819#define DUP2_MAX_FDS 256
1820 int fdtmp[DUP2_MAX_FDS];
79072805 1821 I32 fdx = 0;
ae986130
LW
1822 int fd;
1823
fe14fcc3 1824 if (oldfd == newfd)
fec02dd3 1825 return oldfd;
a687059c 1826 close(newfd);
fc36a67e
PP
1827 /* good enough for low fd's... */
1828 while ((fd = dup(oldfd)) != newfd && fd >= 0) {
1829 if (fdx >= DUP2_MAX_FDS) {
1830 close(fd);
1831 fd = -1;
1832 break;
1833 }
ae986130 1834 fdtmp[fdx++] = fd;
fc36a67e 1835 }
ae986130
LW
1836 while (fdx > 0)
1837 close(fdtmp[--fdx]);
fec02dd3 1838 return fd;
62b28dd9 1839#endif
a687059c
LW
1840}
1841#endif
1842
ff68c719
PP
1843
1844#ifdef HAS_SIGACTION
1845
1846Sighandler_t
1847rsignal(signo, handler)
1848int signo;
1849Sighandler_t handler;
1850{
1851 struct sigaction act, oact;
1852
1853 act.sa_handler = handler;
1854 sigemptyset(&act.sa_mask);
1855 act.sa_flags = 0;
1856#ifdef SA_RESTART
1857 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
1858#endif
1859 if (sigaction(signo, &act, &oact) == -1)
36477c24 1860 return SIG_ERR;
ff68c719 1861 else
36477c24 1862 return oact.sa_handler;
ff68c719
PP
1863}
1864
1865Sighandler_t
1866rsignal_state(signo)
1867int signo;
1868{
1869 struct sigaction oact;
1870
1871 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
1872 return SIG_ERR;
1873 else
1874 return oact.sa_handler;
1875}
1876
1877int
1878rsignal_save(signo, handler, save)
1879int signo;
1880Sighandler_t handler;
1881Sigsave_t *save;
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
1895rsignal_restore(signo, save)
1896int signo;
1897Sigsave_t *save;
1898{
1899 return sigaction(signo, save, (struct sigaction *)NULL);
1900}
1901
1902#else /* !HAS_SIGACTION */
1903
1904Sighandler_t
1905rsignal(signo, handler)
1906int signo;
1907Sighandler_t handler;
1908{
1909 return signal(signo, handler);
1910}
1911
1912static int sig_trapped;
1913
1914static
1915Signal_t
1916sig_trap(signo)
1917int signo;
1918{
1919 sig_trapped++;
1920}
1921
1922Sighandler_t
1923rsignal_state(signo)
1924int signo;
1925{
1926 Sighandler_t oldsig;
1927
1928 sig_trapped = 0;
1929 oldsig = signal(signo, sig_trap);
1930 signal(signo, oldsig);
1931 if (sig_trapped)
1932 kill(getpid(), signo);
1933 return oldsig;
1934}
1935
1936int
1937rsignal_save(signo, handler, save)
1938int signo;
1939Sighandler_t handler;
1940Sigsave_t *save;
1941{
1942 *save = signal(signo, handler);
1943 return (*save == SIG_ERR) ? -1 : 0;
1944}
1945
1946int
36477c24 1947rsignal_restore(signo, save)
ff68c719
PP
1948int signo;
1949Sigsave_t *save;
1950{
1951 return (signal(signo, *save) == SIG_ERR) ? -1 : 0;
1952}
1953
1954#endif /* !HAS_SIGACTION */
1955
5f05dabc
PP
1956 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
1957#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS)
79072805
LW
1958I32
1959my_pclose(ptr)
760ac839 1960PerlIO *ptr;
a687059c 1961{
ff68c719 1962 Sigsave_t hstat, istat, qstat;
a687059c 1963 int status;
a0d0e21e 1964 SV **svp;
20188a90 1965 int pid;
03136e13
CS
1966 bool close_failed;
1967 int saved_errno;
1968#ifdef VMS
1969 int saved_vaxc_errno;
1970#endif
a687059c 1971
760ac839 1972 svp = av_fetch(fdpid,PerlIO_fileno(ptr),TRUE);
748a9306 1973 pid = (int)SvIVX(*svp);
a0d0e21e
LW
1974 SvREFCNT_dec(*svp);
1975 *svp = &sv_undef;
ddcf38b7
IZ
1976#ifdef OS2
1977 if (pid == -1) { /* Opened by popen. */
1978 return my_syspclose(ptr);
1979 }
1980#endif
03136e13
CS
1981 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
1982 saved_errno = errno;
1983#ifdef VMS
1984 saved_vaxc_errno = vaxc$errno;
1985#endif
1986 }
7c0587c8
LW
1987#ifdef UTS
1988 if(kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
1989#endif
ff68c719
PP
1990 rsignal_save(SIGHUP, SIG_IGN, &hstat);
1991 rsignal_save(SIGINT, SIG_IGN, &istat);
1992 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306
LW
1993 do {
1994 pid = wait4pid(pid, &status, 0);
1995 } while (pid == -1 && errno == EINTR);
ff68c719
PP
1996 rsignal_restore(SIGHUP, &hstat);
1997 rsignal_restore(SIGINT, &istat);
1998 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS
1999 if (close_failed) {
2000 SETERRNO(saved_errno, saved_vaxc_errno);
2001 return -1;
2002 }
2003 return(pid < 0 ? pid : status == 0 ? 0 : (errno = 0, status));
20188a90 2004}
4633a7c4
LW
2005#endif /* !DOSISH */
2006
2007#if !defined(DOSISH) || defined(OS2)
79072805 2008I32
20188a90
LW
2009wait4pid(pid,statusp,flags)
2010int pid;
2011int *statusp;
2012int flags;
2013{
79072805
LW
2014 SV *sv;
2015 SV** svp;
fc36a67e 2016 char spid[TYPE_CHARS(int)];
20188a90
LW
2017
2018 if (!pid)
2019 return -1;
20188a90
LW
2020 if (pid > 0) {
2021 sprintf(spid, "%d", pid);
79072805
LW
2022 svp = hv_fetch(pidstatus,spid,strlen(spid),FALSE);
2023 if (svp && *svp != &sv_undef) {
463ee0b2 2024 *statusp = SvIVX(*svp);
748a9306 2025 (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2026 return pid;
2027 }
2028 }
2029 else {
79072805 2030 HE *entry;
20188a90 2031
79072805
LW
2032 hv_iterinit(pidstatus);
2033 if (entry = hv_iternext(pidstatus)) {
a0d0e21e 2034 pid = atoi(hv_iterkey(entry,(I32*)statusp));
79072805 2035 sv = hv_iterval(pidstatus,entry);
463ee0b2 2036 *statusp = SvIVX(sv);
20188a90 2037 sprintf(spid, "%d", pid);
748a9306 2038 (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2039 return pid;
2040 }
2041 }
79072805
LW
2042#ifdef HAS_WAITPID
2043 return waitpid(pid,statusp,flags);
2044#else
a0d0e21e
LW
2045#ifdef HAS_WAIT4
2046 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
2047#else
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
20188a90 2061#endif
a687059c 2062}
7c0587c8 2063#endif /* !DOSISH */
a687059c 2064
7c0587c8 2065void
de3bb511 2066/*SUPPRESS 590*/
a687059c
LW
2067pidgone(pid,status)
2068int pid;
2069int status;
2070{
79072805 2071 register SV *sv;
fc36a67e 2072 char spid[TYPE_CHARS(int)];
a687059c 2073
20188a90 2074 sprintf(spid, "%d", pid);
79072805 2075 sv = *hv_fetch(pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2076 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2077 SvIVX(sv) = status;
20188a90 2078 return;
a687059c
LW
2079}
2080
55497cff 2081#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2082int pclose();
ddcf38b7
IZ
2083#ifdef HAS_FORK
2084int /* Cannot prototype with I32
2085 in os2ish.h. */
2086my_syspclose(ptr)
2087#else
79072805
LW
2088I32
2089my_pclose(ptr)
ddcf38b7 2090#endif
760ac839 2091PerlIO *ptr;
a687059c 2092{
760ac839
LW
2093 /* Needs work for PerlIO ! */
2094 FILE *f = PerlIO_findFILE(ptr);
2095 I32 result = pclose(f);
2096 PerlIO_releaseFILE(ptr,f);
2097 return result;
a687059c 2098}
7c0587c8 2099#endif
9f68db38
LW
2100
2101void
2102repeatcpy(to,from,len,count)
2103register char *to;
2104register char *from;
79072805
LW
2105I32 len;
2106register I32 count;
9f68db38 2107{
79072805 2108 register I32 todo;
9f68db38
LW
2109 register char *frombase = from;
2110
2111 if (len == 1) {
2112 todo = *from;
2113 while (count-- > 0)
2114 *to++ = todo;
2115 return;
2116 }
2117 while (count-- > 0) {
2118 for (todo = len; todo > 0; todo--) {
2119 *to++ = *from++;
2120 }
2121 from = frombase;
2122 }
2123}
0f85fab0
LW
2124
2125#ifndef CASTNEGFLOAT
463ee0b2 2126U32
79072805 2127cast_ulong(f)
0f85fab0
LW
2128double f;
2129{
2130 long along;
2131
27e2fb84 2132#if CASTFLAGS & 2
34de22dd
LW
2133# define BIGDOUBLE 2147483648.0
2134 if (f >= BIGDOUBLE)
2135 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2136#endif
0f85fab0
LW
2137 if (f >= 0.0)
2138 return (unsigned long)f;
2139 along = (long)f;
2140 return (unsigned long)along;
2141}
ed6116ce
LW
2142# undef BIGDOUBLE
2143#endif
2144
2145#ifndef CASTI32
5d94fbed 2146
5d94fbed
AD
2147/* Unfortunately, on some systems the cast_uv() function doesn't
2148 work with the system-supplied definition of ULONG_MAX. The
2149 comparison (f >= ULONG_MAX) always comes out true. It must be a
2150 problem with the compiler constant folding.
2151
2152 In any case, this workaround should be fine on any two's complement
2153 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2154 ccflags.
2155 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2156*/
1eb770ff
PP
2157
2158/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2159 of LONG_(MIN/MAX).
2160 -- Kenneth Albanowski <kjahds@kjahds.com>
2161*/
2162
20cec16a
PP
2163#ifndef MY_UV_MAX
2164# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD
2165#endif
2166
ed6116ce
LW
2167I32
2168cast_i32(f)
2169double f;
2170{
20cec16a
PP
2171 if (f >= I32_MAX)
2172 return (I32) I32_MAX;
2173 if (f <= I32_MIN)
2174 return (I32) I32_MIN;
ed6116ce
LW
2175 return (I32) f;
2176}
a0d0e21e
LW
2177
2178IV
2179cast_iv(f)
2180double f;
2181{
20cec16a
PP
2182 if (f >= IV_MAX)
2183 return (IV) IV_MAX;
2184 if (f <= IV_MIN)
2185 return (IV) IV_MIN;
a0d0e21e
LW
2186 return (IV) f;
2187}
5d94fbed
AD
2188
2189UV
2190cast_uv(f)
2191double f;
2192{
20cec16a
PP
2193 if (f >= MY_UV_MAX)
2194 return (UV) MY_UV_MAX;
5d94fbed
AD
2195 return (UV) f;
2196}
2197
0f85fab0 2198#endif
62b28dd9 2199
fe14fcc3 2200#ifndef HAS_RENAME
79072805 2201I32
62b28dd9
LW
2202same_dirent(a,b)
2203char *a;
2204char *b;
2205{
93a17b20
LW
2206 char *fa = strrchr(a,'/');
2207 char *fb = strrchr(b,'/');
62b28dd9
LW
2208 struct stat tmpstatbuf1;
2209 struct stat tmpstatbuf2;
46fc3d4c 2210 SV *tmpsv = sv_newmortal();
62b28dd9
LW
2211
2212 if (fa)
2213 fa++;
2214 else
2215 fa = a;
2216 if (fb)
2217 fb++;
2218 else
2219 fb = b;
2220 if (strNE(a,b))
2221 return FALSE;
2222 if (fa == a)
46fc3d4c 2223 sv_setpv(tmpsv, ".");
62b28dd9 2224 else
46fc3d4c
PP
2225 sv_setpvn(tmpsv, a, fa - a);
2226 if (Stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW
2227 return FALSE;
2228 if (fb == b)
46fc3d4c 2229 sv_setpv(tmpsv, ".");
62b28dd9 2230 else
46fc3d4c
PP
2231 sv_setpvn(tmpsv, b, fb - b);
2232 if (Stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW
2233 return FALSE;
2234 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2235 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2236}
fe14fcc3
LW
2237#endif /* !HAS_RENAME */
2238
55497cff 2239UV
79072805 2240scan_oct(start, len, retlen)
fe14fcc3 2241char *start;
79072805
LW
2242I32 len;
2243I32 *retlen;
fe14fcc3
LW
2244{
2245 register char *s = start;
55497cff
PP
2246 register UV retval = 0;
2247 bool overflowed = FALSE;
fe14fcc3 2248
748a9306 2249 while (len && *s >= '0' && *s <= '7') {
55497cff
PP
2250 register UV n = retval << 3;
2251 if (!overflowed && (n >> 3) != retval) {
2252 warn("Integer overflow in octal number");
2253 overflowed = TRUE;
2254 }
2255 retval = n | (*s++ - '0');
748a9306 2256 len--;
fe14fcc3 2257 }
748a9306
LW
2258 if (dowarn && len && (*s == '8' || *s == '9'))
2259 warn("Illegal octal digit ignored");
fe14fcc3
LW
2260 *retlen = s - start;
2261 return retval;
2262}
2263
71be2cbc 2264UV
79072805 2265scan_hex(start, len, retlen)
fe14fcc3 2266char *start;
79072805
LW
2267I32 len;
2268I32 *retlen;
fe14fcc3
LW
2269{
2270 register char *s = start;
55497cff
PP
2271 register UV retval = 0;
2272 bool overflowed = FALSE;
fe14fcc3
LW
2273 char *tmp;
2274
93a17b20 2275 while (len-- && *s && (tmp = strchr(hexdigit, *s))) {
55497cff
PP
2276 register UV n = retval << 4;
2277 if (!overflowed && (n >> 4) != retval) {
2278 warn("Integer overflow in hex number");
2279 overflowed = TRUE;
2280 }
2281 retval = n | (tmp - hexdigit) & 15;
fe14fcc3
LW
2282 s++;
2283 }
2284 *retlen = s - start;
2285 return retval;
2286}
760ac839
LW
2287
2288
2289#ifdef HUGE_VAL
2290/*
2291 * This hack is to force load of "huge" support from libm.a
2292 * So it is in perl for (say) POSIX to use.
2293 * Needed for SunOS with Sun's 'acc' for example.
2294 */
2295double
2296Perl_huge()
2297{
2298 return HUGE_VAL;
2299}
2300#endif