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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
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 *
a687059c 285cpytill(to,from,fromend,delim,retlen)
62b28dd9
LW
286register char *to;
287register char *from;
a687059c 288register char *fromend;
a0d0e21e 289register int delim;
79072805 290I32 *retlen;
8d063cd8 291{
a687059c
LW
292 char *origto = to;
293
294 for (; from < fromend; from++,to++) {
378cc40b
LW
295 if (*from == '\\') {
296 if (from[1] == delim)
297 from++;
298 else if (from[1] == '\\')
299 *to++ = *from++;
300 }
8d063cd8
LW
301 else if (*from == delim)
302 break;
303 *to = *from;
304 }
305 *to = '\0';
a687059c 306 *retlen = to - origto;
8d063cd8
LW
307 return from;
308}
309
310/* return ptr to little string in big string, NULL if not found */
378cc40b 311/* This routine was donated by Corey Satten. */
8d063cd8
LW
312
313char *
314instr(big, little)
378cc40b
LW
315register char *big;
316register char *little;
317{
318 register char *s, *x;
79072805 319 register I32 first;
378cc40b 320
a687059c
LW
321 if (!little)
322 return big;
323 first = *little++;
378cc40b
LW
324 if (!first)
325 return big;
326 while (*big) {
327 if (*big++ != first)
328 continue;
329 for (x=big,s=little; *s; /**/ ) {
330 if (!*x)
331 return Nullch;
332 if (*s++ != *x++) {
333 s--;
334 break;
335 }
336 }
337 if (!*s)
338 return big-1;
339 }
340 return Nullch;
341}
8d063cd8 342
a687059c
LW
343/* same as instr but allow embedded nulls */
344
345char *
346ninstr(big, bigend, little, lend)
347register char *big;
348register char *bigend;
349char *little;
350char *lend;
8d063cd8 351{
a687059c 352 register char *s, *x;
79072805 353 register I32 first = *little;
a687059c 354 register char *littleend = lend;
378cc40b 355
a0d0e21e 356 if (!first && little >= littleend)
a687059c 357 return big;
de3bb511
LW
358 if (bigend - big < littleend - little)
359 return Nullch;
a687059c
LW
360 bigend -= littleend - little++;
361 while (big <= bigend) {
362 if (*big++ != first)
363 continue;
364 for (x=big,s=little; s < littleend; /**/ ) {
365 if (*s++ != *x++) {
366 s--;
367 break;
368 }
369 }
370 if (s >= littleend)
371 return big-1;
378cc40b 372 }
a687059c
LW
373 return Nullch;
374}
375
376/* reverse of the above--find last substring */
377
378char *
379rninstr(big, bigend, little, lend)
380register char *big;
381char *bigend;
382char *little;
383char *lend;
384{
385 register char *bigbeg;
386 register char *s, *x;
79072805 387 register I32 first = *little;
a687059c
LW
388 register char *littleend = lend;
389
a0d0e21e 390 if (!first && little >= littleend)
a687059c
LW
391 return bigend;
392 bigbeg = big;
393 big = bigend - (littleend - little++);
394 while (big >= bigbeg) {
395 if (*big-- != first)
396 continue;
397 for (x=big+2,s=little; s < littleend; /**/ ) {
398 if (*s++ != *x++) {
399 s--;
400 break;
401 }
402 }
403 if (s >= littleend)
404 return big+1;
378cc40b 405 }
a687059c 406 return Nullch;
378cc40b 407}
a687059c 408
bbce6d69
PP
409/*
410 * Set up for a new ctype locale.
411 */
55497cff 412void
bbce6d69
PP
413perl_new_ctype(newctype)
414 char *newctype;
ef7eada9 415{
36477c24
PP
416#ifdef USE_LOCALE_CTYPE
417
bbce6d69 418 int i;
ef7eada9 419
bbce6d69
PP
420 for (i = 0; i < 256; i++) {
421 if (isUPPER_LC(i))
422 fold_locale[i] = toLOWER_LC(i);
423 else if (isLOWER_LC(i))
424 fold_locale[i] = toUPPER_LC(i);
425 else
426 fold_locale[i] = i;
427 }
bbce6d69 428
36477c24
PP
429#endif /* USE_LOCALE_CTYPE */
430}
bbce6d69
PP
431
432/*
433 * Set up for a new collation locale.
434 */
435void
436perl_new_collate(newcoll)
437 char *newcoll;
438{
36477c24
PP
439#ifdef USE_LOCALE_COLLATE
440
bbce6d69
PP
441 if (! newcoll) {
442 if (collation_name) {
443 ++collation_ix;
444 Safefree(collation_name);
445 collation_name = NULL;
446 collation_standard = TRUE;
bbce6d69
PP
447 collxfrm_base = 0;
448 collxfrm_mult = 2;
bbce6d69
PP
449 }
450 return;
451 }
452
453 if (! collation_name || strNE(collation_name, newcoll)) {
454 ++collation_ix;
455 Safefree(collation_name);
456 collation_name = savepv(newcoll);
ff68c719 457 collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 458
bbce6d69
PP
459 {
460 /* 2: at most so many chars ('a', 'b'). */
461 /* 50: surely no system expands a char more. */
462#define XFRMBUFSIZE (2 * 50)
463 char xbuf[XFRMBUFSIZE];
464 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
465 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
466 SSize_t mult = fb - fa;
467 if (mult < 1)
468 croak("strxfrm() gets absurd");
469 collxfrm_base = (fa > mult) ? (fa - mult) : 0;
470 collxfrm_mult = mult;
471 }
bbce6d69 472 }
bbce6d69 473
36477c24
PP
474#endif /* USE_LOCALE_COLLATE */
475}
bbce6d69
PP
476
477/*
478 * Set up for a new numeric locale.
479 */
480void
481perl_new_numeric(newnum)
482 char *newnum;
483{
36477c24
PP
484#ifdef USE_LOCALE_NUMERIC
485
bbce6d69
PP
486 if (! newnum) {
487 if (numeric_name) {
488 Safefree(numeric_name);
489 numeric_name = NULL;
490 numeric_standard = TRUE;
491 numeric_local = TRUE;
492 }
493 return;
494 }
495
496 if (! numeric_name || strNE(numeric_name, newnum)) {
497 Safefree(numeric_name);
498 numeric_name = savepv(newnum);
ff68c719 499 numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
bbce6d69
PP
500 numeric_local = TRUE;
501 }
36477c24
PP
502
503#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
504}
505
506void
36477c24 507perl_set_numeric_standard()
bbce6d69 508{
5f05dabc
PP
509#ifdef USE_LOCALE_NUMERIC
510
bbce6d69
PP
511 if (! numeric_standard) {
512 setlocale(LC_NUMERIC, "C");
513 numeric_standard = TRUE;
514 numeric_local = FALSE;
515 }
5f05dabc
PP
516
517#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
518}
519
520void
36477c24 521perl_set_numeric_local()
bbce6d69 522{
5f05dabc
PP
523#ifdef USE_LOCALE_NUMERIC
524
bbce6d69
PP
525 if (! numeric_local) {
526 setlocale(LC_NUMERIC, numeric_name);
527 numeric_standard = FALSE;
528 numeric_local = TRUE;
529 }
bbce6d69 530
36477c24 531#endif /* USE_LOCALE_NUMERIC */
5f05dabc 532}
36477c24 533
bbce6d69 534
36477c24
PP
535/*
536 * Initialize locale awareness.
537 */
f0c5b223 538int
1050c9ca 539perl_init_i18nl10n(printwarn)
f0c5b223
TB
540 int printwarn;
541{
542 int ok = 1;
543 /* returns
544 * 1 = set ok or not applicable,
545 * 0 = fallback to C locale,
546 * -1 = fallback to C locale failed
547 */
bbce6d69 548
36477c24 549#ifdef USE_LOCALE
bbce6d69 550
36477c24 551#ifdef USE_LOCALE_CTYPE
bbce6d69 552 char *curctype = NULL;
36477c24
PP
553#endif /* USE_LOCALE_CTYPE */
554#ifdef USE_LOCALE_COLLATE
bbce6d69 555 char *curcoll = NULL;
36477c24
PP
556#endif /* USE_LOCALE_COLLATE */
557#ifdef USE_LOCALE_NUMERIC
bbce6d69 558 char *curnum = NULL;
36477c24 559#endif /* USE_LOCALE_NUMERIC */
02b32252 560 char *lc_all = getenv("LC_ALL");
5f05dabc 561 char *lang = getenv("LANG");
bbce6d69 562 bool setlocale_failure = FALSE;
f0c5b223 563
02b32252
CS
564#ifdef LOCALE_ENVIRON_REQUIRED
565
566 /*
567 * Ultrix setlocale(..., "") fails if there are no environment
568 * variables from which to get a locale name.
569 */
570
571 bool done = FALSE;
572
573#ifdef LC_ALL
574 if (lang) {
575 if (setlocale(LC_ALL, ""))
576 done = TRUE;
577 else
578 setlocale_failure = TRUE;
579 }
580 if (!setlocale_failure)
581#endif /* LC_ALL */
582 {
583#ifdef USE_LOCALE_CTYPE
584 if (! (curctype = setlocale(LC_CTYPE,
585 (!done && (lang || getenv("LC_CTYPE")))
586 ? "" : Nullch)))
587 setlocale_failure = TRUE;
588#endif /* USE_LOCALE_CTYPE */
589#ifdef USE_LOCALE_COLLATE
590 if (! (curcoll = setlocale(LC_COLLATE,
591 (!done && (lang || getenv("LC_COLLATE")))
592 ? "" : Nullch)))
593 setlocale_failure = TRUE;
594#endif /* USE_LOCALE_COLLATE */
595#ifdef USE_LOCALE_NUMERIC
596 if (! (curnum = setlocale(LC_NUMERIC,
597 (!done && (lang || getenv("LC_NUMERIC")))
598 ? "" : Nullch)))
599 setlocale_failure = TRUE;
600#endif /* USE_LOCALE_NUMERIC */
601 }
602
603#else /* !LOCALE_ENVIRON_REQUIRED */
604
bbce6d69 605#ifdef LC_ALL
5f05dabc 606
bbce6d69
PP
607 if (! setlocale(LC_ALL, ""))
608 setlocale_failure = TRUE;
5f05dabc
PP
609 else {
610#ifdef USE_LOCALE_CTYPE
611 curctype = setlocale(LC_CTYPE, Nullch);
612#endif /* USE_LOCALE_CTYPE */
613#ifdef USE_LOCALE_COLLATE
614 curcoll = setlocale(LC_COLLATE, Nullch);
615#endif /* USE_LOCALE_COLLATE */
616#ifdef USE_LOCALE_NUMERIC
617 curnum = setlocale(LC_NUMERIC, Nullch);
618#endif /* USE_LOCALE_NUMERIC */
619 }
620
621#else /* !LC_ALL */
bbce6d69 622
36477c24 623#ifdef USE_LOCALE_CTYPE
5f05dabc 624 if (! (curctype = setlocale(LC_CTYPE, "")))
bbce6d69 625 setlocale_failure = TRUE;
36477c24
PP
626#endif /* USE_LOCALE_CTYPE */
627#ifdef USE_LOCALE_COLLATE
5f05dabc 628 if (! (curcoll = setlocale(LC_COLLATE, "")))
bbce6d69 629 setlocale_failure = TRUE;
36477c24
PP
630#endif /* USE_LOCALE_COLLATE */
631#ifdef USE_LOCALE_NUMERIC
5f05dabc 632 if (! (curnum = setlocale(LC_NUMERIC, "")))
bbce6d69 633 setlocale_failure = TRUE;
36477c24 634#endif /* USE_LOCALE_NUMERIC */
bbce6d69 635
5f05dabc
PP
636#endif /* LC_ALL */
637
02b32252
CS
638#endif /* !LOCALE_ENVIRON_REQUIRED */
639
5f05dabc
PP
640 if (setlocale_failure) {
641 char *p;
642 bool locwarn = (printwarn > 1 ||
643 printwarn &&
644 (!(p = getenv("PERL_BADLANG")) || atoi(p)));
20cec16a 645
5f05dabc
PP
646 if (locwarn) {
647#ifdef LC_ALL
648
649 PerlIO_printf(PerlIO_stderr(),
650 "perl: warning: Setting locale failed.\n");
651
652#else /* !LC_ALL */
653
ef7eada9 654 PerlIO_printf(PerlIO_stderr(),
bbce6d69 655 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 656#ifdef USE_LOCALE_CTYPE
bbce6d69 657 if (! curctype)
5f05dabc 658 PerlIO_printf(PerlIO_stderr(), "LC_CTYPE ");
36477c24
PP
659#endif /* USE_LOCALE_CTYPE */
660#ifdef USE_LOCALE_COLLATE
bbce6d69 661 if (! curcoll)
5f05dabc 662 PerlIO_printf(PerlIO_stderr(), "LC_COLLATE ");
36477c24
PP
663#endif /* USE_LOCALE_COLLATE */
664#ifdef USE_LOCALE_NUMERIC
bbce6d69 665 if (! curnum)
5f05dabc 666 PerlIO_printf(PerlIO_stderr(), "LC_NUMERIC ");
36477c24 667#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
668 PerlIO_printf(PerlIO_stderr(), "\n");
669
5f05dabc
PP
670#endif /* LC_ALL */
671
760ac839 672 PerlIO_printf(PerlIO_stderr(),
bbce6d69 673 "perl: warning: Please check that your locale settings:\n");
ef7eada9
JH
674
675 PerlIO_printf(PerlIO_stderr(),
bbce6d69
PP
676 "\tLC_ALL = %c%s%c,\n",
677 lc_all ? '"' : '(',
678 lc_all ? lc_all : "unset",
679 lc_all ? '"' : ')');
5f05dabc
PP
680
681 {
682 char **e;
683 for (e = environ; *e; e++) {
684 if (strnEQ(*e, "LC_", 3)
685 && strnNE(*e, "LC_ALL=", 7)
686 && (p = strchr(*e, '=')))
687 PerlIO_printf(PerlIO_stderr(), "\t%.*s = \"%s\",\n",
688 (p - *e), *e, p + 1);
689 }
690 }
691
ef7eada9 692 PerlIO_printf(PerlIO_stderr(),
bbce6d69 693 "\tLANG = %c%s%c\n",
5f05dabc 694 lang ? '"' : '(',
bbce6d69
PP
695 lang ? lang : "unset",
696 lang ? '"' : ')');
ef7eada9 697
bbce6d69
PP
698 PerlIO_printf(PerlIO_stderr(),
699 " are supported and installed on your system.\n");
5f05dabc 700 }
ef7eada9 701
5f05dabc
PP
702#ifdef LC_ALL
703
704 if (setlocale(LC_ALL, "C")) {
705 if (locwarn)
706 PerlIO_printf(PerlIO_stderr(),
707 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 708 ok = 0;
ef7eada9 709 }
5f05dabc
PP
710 else {
711 if (locwarn)
712 PerlIO_printf(PerlIO_stderr(),
713 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
714 ok = -1;
715 }
bbce6d69 716
5f05dabc
PP
717#else /* ! LC_ALL */
718
719 if (0
36477c24 720#ifdef USE_LOCALE_CTYPE
5f05dabc 721 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24
PP
722#endif /* USE_LOCALE_CTYPE */
723#ifdef USE_LOCALE_COLLATE
5f05dabc 724 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24
PP
725#endif /* USE_LOCALE_COLLATE */
726#ifdef USE_LOCALE_NUMERIC
5f05dabc 727 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 728#endif /* USE_LOCALE_NUMERIC */
5f05dabc
PP
729 )
730 {
731 if (locwarn)
bbce6d69 732 PerlIO_printf(PerlIO_stderr(),
5f05dabc
PP
733 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
734 ok = -1;
bbce6d69 735 }
5f05dabc 736
bbce6d69 737#endif /* ! LC_ALL */
5f05dabc
PP
738
739#ifdef USE_LOCALE_CTYPE
740 curctype = setlocale(LC_CTYPE, Nullch);
741#endif /* USE_LOCALE_CTYPE */
742#ifdef USE_LOCALE_COLLATE
743 curcoll = setlocale(LC_COLLATE, Nullch);
744#endif /* USE_LOCALE_COLLATE */
745#ifdef USE_LOCALE_NUMERIC
746 curnum = setlocale(LC_NUMERIC, Nullch);
747#endif /* USE_LOCALE_NUMERIC */
ef7eada9
JH
748 }
749
36477c24 750#ifdef USE_LOCALE_CTYPE
bbce6d69 751 perl_new_ctype(curctype);
36477c24 752#endif /* USE_LOCALE_CTYPE */
bbce6d69 753
36477c24 754#ifdef USE_LOCALE_COLLATE
bbce6d69 755 perl_new_collate(curcoll);
36477c24 756#endif /* USE_LOCALE_COLLATE */
bbce6d69 757
36477c24 758#ifdef USE_LOCALE_NUMERIC
bbce6d69 759 perl_new_numeric(curnum);
36477c24 760#endif /* USE_LOCALE_NUMERIC */
ef7eada9 761
36477c24 762#endif /* USE_LOCALE */
ef7eada9 763
f0c5b223
TB
764 return ok;
765}
766
bbce6d69
PP
767/* Backwards compatibility. */
768int
769perl_init_i18nl14n(printwarn)
770 int printwarn;
771{
5f05dabc 772 return perl_init_i18nl10n(printwarn);
bbce6d69 773}
ef7eada9 774
36477c24 775#ifdef USE_LOCALE_COLLATE
ef7eada9 776
bbce6d69
PP
777/*
778 * mem_collxfrm() is a bit like strxfrm() but with two important
779 * differences. First, it handles embedded NULs. Second, it allocates
780 * a bit more memory than needed for the transformed data itself.
781 * The real transformed data begins at offset sizeof(collationix).
782 * Please see sv_collxfrm() to see how this is used.
783 */
784char *
785mem_collxfrm(s, len, xlen)
786 const char *s;
787 STRLEN len;
788 STRLEN *xlen;
789{
790 char *xbuf;
791 STRLEN xalloc, xin, xout;
792
793 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
794 /* the +1 is for the terminating NUL. */
795
796 xalloc = sizeof(collation_ix) + collxfrm_base + (collxfrm_mult * len) + 1;
797 New(171, xbuf, xalloc, char);
798 if (! xbuf)
799 goto bad;
800
801 *(U32*)xbuf = collation_ix;
802 xout = sizeof(collation_ix);
803 for (xin = 0; xin < len; ) {
804 SSize_t xused;
805
806 for (;;) {
807 xused = strxfrm(xbuf + xout, s + xin, xalloc - xout);
808 if (xused == -1)
809 goto bad;
810 if (xused < xalloc - xout)
811 break;
812 xalloc = (2 * xalloc) + 1;
813 Renew(xbuf, xalloc, char);
814 if (! xbuf)
815 goto bad;
816 }
ef7eada9 817
bbce6d69
PP
818 xin += strlen(s + xin) + 1;
819 xout += xused;
820
821 /* Embedded NULs are understood but silently skipped
822 * because they make no sense in locale collation. */
823 }
ef7eada9 824
bbce6d69
PP
825 xbuf[xout] = '\0';
826 *xlen = xout - sizeof(collation_ix);
827 return xbuf;
828
829 bad:
830 Safefree(xbuf);
831 *xlen = 0;
832 return NULL;
ef7eada9
JH
833}
834
36477c24 835#endif /* USE_LOCALE_COLLATE */
bbce6d69 836
378cc40b 837void
bbce6d69 838fbm_compile(sv)
79072805 839SV *sv;
378cc40b 840{
a687059c
LW
841 register unsigned char *s;
842 register unsigned char *table;
79072805
LW
843 register U32 i;
844 register U32 len = SvCUR(sv);
845 I32 rarest = 0;
846 U32 frequency = 256;
847
748a9306
LW
848 if (len > 255)
849 return; /* can't have offsets that big */
79072805 850 Sv_Grow(sv,len+258);
463ee0b2 851 table = (unsigned char*)(SvPVX(sv) + len + 1);
a687059c
LW
852 s = table - 2;
853 for (i = 0; i < 256; i++) {
378cc40b
LW
854 table[i] = len;
855 }
856 i = 0;
463ee0b2 857 while (s >= (unsigned char*)(SvPVX(sv)))
a687059c 858 {
bbce6d69
PP
859 if (table[*s] == len)
860 table[*s] = i;
378cc40b
LW
861 s--,i++;
862 }
79072805 863 sv_upgrade(sv, SVt_PVBM);
bbce6d69 864 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 865 SvVALID_on(sv);
378cc40b 866
463ee0b2 867 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69
PP
868 for (i = 0; i < len; i++) {
869 if (freq[s[i]] < frequency) {
870 rarest = i;
871 frequency = freq[s[i]];
378cc40b
LW
872 }
873 }
79072805
LW
874 BmRARE(sv) = s[rarest];
875 BmPREVIOUS(sv) = rarest;
760ac839 876 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW
877}
878
378cc40b 879char *
79072805 880fbm_instr(big, bigend, littlestr)
a687059c
LW
881unsigned char *big;
882register unsigned char *bigend;
79072805 883SV *littlestr;
378cc40b 884{
a687059c 885 register unsigned char *s;
79072805
LW
886 register I32 tmp;
887 register I32 littlelen;
a687059c
LW
888 register unsigned char *little;
889 register unsigned char *table;
890 register unsigned char *olds;
891 register unsigned char *oldlittle;
378cc40b 892
79072805 893 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
a0d0e21e
LW
894 STRLEN len;
895 char *l = SvPV(littlestr,len);
896 if (!len)
d48672a2 897 return (char*)big;
a0d0e21e 898 return ninstr((char*)big,(char*)bigend, l, l + len);
d48672a2 899 }
378cc40b 900
79072805
LW
901 littlelen = SvCUR(littlestr);
902 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
0f85fab0
LW
903 if (littlelen > bigend - big)
904 return Nullch;
463ee0b2 905 little = (unsigned char*)SvPVX(littlestr);
bbce6d69 906 s = bigend - littlelen;
36477c24 907 if (*s == *little && memEQ((char*)s,(char*)little,littlelen))
bbce6d69
PP
908 return (char*)s; /* how sweet it is */
909 else if (bigend[-1] == '\n' && little[littlelen-1] != '\n'
910 && s > big) {
911 s--;
36477c24 912 if (*s == *little && memEQ((char*)s,(char*)little,littlelen))
bbce6d69 913 return (char*)s;
a687059c 914 }
bbce6d69 915 return Nullch;
a687059c 916 }
463ee0b2 917 table = (unsigned char*)(SvPVX(littlestr) + littlelen + 1);
62b28dd9
LW
918 if (--littlelen >= bigend - big)
919 return Nullch;
920 s = big + littlelen;
a687059c 921 oldlittle = little = table - 2;
bbce6d69
PP
922 if (s < bigend) {
923 top2:
924 /*SUPPRESS 560*/
925 if (tmp = table[*s]) {
62b28dd9 926#ifdef POINTERRIGOR
bbce6d69
PP
927 if (bigend - s > tmp) {
928 s += tmp;
929 goto top2;
930 }
62b28dd9 931#else
bbce6d69
PP
932 if ((s += tmp) < bigend)
933 goto top2;
62b28dd9 934#endif
bbce6d69 935 return Nullch;
a687059c 936 }
bbce6d69
PP
937 else {
938 tmp = littlelen; /* less expensive than calling strncmp() */
939 olds = s;
940 while (tmp--) {
941 if (*--s == *--little)
942 continue;
943 s = olds + 1; /* here we pay the price for failure */
944 little = oldlittle;
945 if (s < bigend) /* fake up continue to outer loop */
62b28dd9 946 goto top2;
62b28dd9 947 return Nullch;
a687059c 948 }
bbce6d69 949 return (char *)s;
378cc40b
LW
950 }
951 }
952 return Nullch;
953}
954
955char *
956screaminstr(bigstr, littlestr)
79072805
LW
957SV *bigstr;
958SV *littlestr;
378cc40b 959{
a687059c
LW
960 register unsigned char *s, *x;
961 register unsigned char *big;
79072805
LW
962 register I32 pos;
963 register I32 previous;
964 register I32 first;
a687059c
LW
965 register unsigned char *little;
966 register unsigned char *bigend;
967 register unsigned char *littleend;
378cc40b 968
79072805 969 if ((pos = screamfirst[BmRARE(littlestr)]) < 0)
378cc40b 970 return Nullch;
463ee0b2 971 little = (unsigned char *)(SvPVX(littlestr));
79072805 972 littleend = little + SvCUR(littlestr);
378cc40b 973 first = *little++;
79072805 974 previous = BmPREVIOUS(littlestr);
463ee0b2 975 big = (unsigned char *)(SvPVX(bigstr));
79072805 976 bigend = big + SvCUR(bigstr);
378cc40b
LW
977 while (pos < previous) {
978 if (!(pos += screamnext[pos]))
979 return Nullch;
980 }
de3bb511 981#ifdef POINTERRIGOR
bbce6d69
PP
982 do {
983 if (big[pos-previous] != first)
984 continue;
985 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
986 if (x >= bigend)
987 return Nullch;
988 if (*s++ != *x++) {
989 s--;
990 break;
de3bb511 991 }
bbce6d69
PP
992 }
993 if (s == littleend)
994 return (char *)(big+pos-previous);
995 } while ( pos += screamnext[pos] );
de3bb511
LW
996#else /* !POINTERRIGOR */
997 big -= previous;
bbce6d69
PP
998 do {
999 if (big[pos] != first)
1000 continue;
1001 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
1002 if (x >= bigend)
1003 return Nullch;
1004 if (*s++ != *x++) {
1005 s--;
1006 break;
378cc40b 1007 }
bbce6d69
PP
1008 }
1009 if (s == littleend)
1010 return (char *)(big+pos);
1011 } while ( pos += screamnext[pos] );
de3bb511 1012#endif /* POINTERRIGOR */
8d063cd8
LW
1013 return Nullch;
1014}
1015
79072805 1016I32
bbce6d69
PP
1017ibcmp(s1, s2, len)
1018char *s1, *s2;
79072805
LW
1019register I32 len;
1020{
bbce6d69
PP
1021 register U8 *a = (U8 *)s1;
1022 register U8 *b = (U8 *)s2;
79072805 1023 while (len--) {
bbce6d69
PP
1024 if (*a != *b && *a != fold[*b])
1025 return 1;
1026 a++,b++;
1027 }
1028 return 0;
1029}
1030
1031I32
1032ibcmp_locale(s1, s2, len)
1033char *s1, *s2;
1034register I32 len;
1035{
1036 register U8 *a = (U8 *)s1;
1037 register U8 *b = (U8 *)s2;
1038 while (len--) {
1039 if (*a != *b && *a != fold_locale[*b])
1040 return 1;
1041 a++,b++;
79072805
LW
1042 }
1043 return 0;
1044}
1045
8d063cd8
LW
1046/* copy a string to a safe spot */
1047
1048char *
a0d0e21e 1049savepv(sv)
79072805 1050char *sv;
8d063cd8 1051{
a687059c 1052 register char *newaddr;
8d063cd8 1053
79072805
LW
1054 New(902,newaddr,strlen(sv)+1,char);
1055 (void)strcpy(newaddr,sv);
8d063cd8
LW
1056 return newaddr;
1057}
1058
a687059c
LW
1059/* same thing but with a known length */
1060
1061char *
a0d0e21e 1062savepvn(sv, len)
79072805
LW
1063char *sv;
1064register I32 len;
a687059c
LW
1065{
1066 register char *newaddr;
1067
1068 New(903,newaddr,len+1,char);
79072805 1069 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW
1070 newaddr[len] = '\0'; /* is now */
1071 return newaddr;
1072}
1073
a0d0e21e 1074#ifdef I_STDARG
8990e307 1075char *
71be2cbc 1076mess(const char *pat, va_list *args)
a687059c
LW
1077#else
1078/*VARARGS0*/
de3bb511 1079char *
8990e307 1080mess(pat, args)
71be2cbc 1081 const char *pat;
2304df62 1082 va_list *args;
8990e307
LW
1083#endif
1084{
a687059c 1085 char *s;
f0c5b223 1086 char *s_start;
79072805
LW
1087 SV *tmpstr;
1088 I32 usermess;
d48672a2 1089#ifndef HAS_VPRINTF
85e6fe83 1090#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1091 char *vsprintf();
1092#else
79072805 1093 I32 vsprintf();
a687059c 1094#endif
d48672a2 1095#endif
a687059c 1096
f0c5b223 1097 s = s_start = buf;
de3bb511
LW
1098 usermess = strEQ(pat, "%s");
1099 if (usermess) {
8990e307 1100 tmpstr = sv_newmortal();
2304df62 1101 sv_setpv(tmpstr, va_arg(*args, char *));
8ebc5c01 1102 *s++ = SvCUR(tmpstr) ? SvPVX(tmpstr)[SvCUR(tmpstr)-1] : ' ';
de3bb511
LW
1103 }
1104 else {
2304df62 1105 (void) vsprintf(s,pat,*args);
de3bb511
LW
1106 s += strlen(s);
1107 }
2304df62 1108 va_end(*args);
a687059c 1109
5f05dabc 1110 if (!(s > s_start && s[-1] == '\n')) {
2304df62
AD
1111 if (dirty)
1112 strcpy(s, " during global destruction.\n");
1113 else {
1114 if (curcop->cop_line) {
1115 (void)sprintf(s," at %s line %ld",
1116 SvPVX(GvSV(curcop->cop_filegv)), (long)curcop->cop_line);
1117 s += strlen(s);
1118 }
c07a80fd
PP
1119 if (GvIO(last_in_gv) && IoLINES(GvIOp(last_in_gv))) {
1120 bool line_mode = (RsSIMPLE(rs) &&
1121 SvLEN(rs) == 1 && *SvPVX(rs) == '\n');
2304df62
AD
1122 (void)sprintf(s,", <%s> %s %ld",
1123 last_in_gv == argvgv ? "" : GvNAME(last_in_gv),
c07a80fd 1124 line_mode ? "line" : "chunk",
a0d0e21e 1125 (long)IoLINES(GvIOp(last_in_gv)));
2304df62
AD
1126 s += strlen(s);
1127 }
1128 (void)strcpy(s,".\n");
f0c5b223 1129 s += 2;
a687059c 1130 }
de3bb511 1131 if (usermess)
79072805 1132 sv_catpv(tmpstr,buf+1);
a687059c 1133 }
de3bb511 1134
f0c5b223
TB
1135 if (s - s_start >= sizeof(buf)) { /* Ooops! */
1136 if (usermess)
760ac839 1137 PerlIO_puts(PerlIO_stderr(), SvPVX(tmpstr));
f0c5b223 1138 else
760ac839
LW
1139 PerlIO_puts(PerlIO_stderr(), buf);
1140 PerlIO_puts(PerlIO_stderr(), "panic: message overflow - memory corrupted!\n");
f0c5b223
TB
1141 my_exit(1);
1142 }
de3bb511 1143 if (usermess)
463ee0b2 1144 return SvPVX(tmpstr);
de3bb511
LW
1145 else
1146 return buf;
a687059c
LW
1147}
1148
ecfc5424 1149#ifdef I_STDARG
36477c24 1150OP *
71be2cbc 1151die(const char* pat, ...)
36477c24
PP
1152#else
1153/*VARARGS0*/
1154OP *
1155die(pat, va_alist)
71be2cbc 1156 const char *pat;
36477c24
PP
1157 va_dcl
1158#endif
1159{
1160 va_list args;
1161 char *message;
035902c7 1162 I32 oldrunlevel = runlevel;
36477c24
PP
1163 int was_in_eval = in_eval;
1164 HV *stash;
1165 GV *gv;
1166 CV *cv;
1167
1168 /* We have to switch back to mainstack or die_where may try to pop
1169 * the eval block from the wrong stack if die is being called from a
1170 * signal handler. - dkindred@cs.cmu.edu */
1171 if (curstack != mainstack) {
1172 dSP;
1173 SWITCHSTACK(curstack, mainstack);
1174 }
1175
1176#ifdef I_STDARG
1177 va_start(args, pat);
1178#else
1179 va_start(args);
1180#endif
1181 message = mess(pat, &args);
1182 va_end(args);
1183
1738f5c4
CS
1184 if (diehook) {
1185 /* sv_2cv might call croak() */
1186 SV *olddiehook = diehook;
1187 ENTER;
1188 SAVESPTR(diehook);
1189 diehook = Nullsv;
1190 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1191 LEAVE;
1192 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1193 dSP;
774d564b
PP
1194 SV *msg;
1195
1196 ENTER;
1197 msg = newSVpv(message, 0);
1198 SvREADONLY_on(msg);
1199 SAVEFREESV(msg);
1738f5c4
CS
1200
1201 PUSHMARK(sp);
1202 XPUSHs(msg);
1203 PUTBACK;
1204 perl_call_sv((SV*)cv, G_DISCARD);
1205
774d564b 1206 LEAVE;
1738f5c4 1207 }
36477c24
PP
1208 }
1209
1210 restartop = die_where(message);
1211 if ((!restartop && was_in_eval) || oldrunlevel > 1)
54310121 1212 JMPENV_JUMP(3);
36477c24
PP
1213 return restartop;
1214}
1215
1216#ifdef I_STDARG
79072805 1217void
71be2cbc 1218croak(const char* pat, ...)
463ee0b2 1219#else
8990e307
LW
1220/*VARARGS0*/
1221void
1222croak(pat, va_alist)
1223 char *pat;
1224 va_dcl
463ee0b2 1225#endif
a687059c
LW
1226{
1227 va_list args;
de3bb511 1228 char *message;
748a9306
LW
1229 HV *stash;
1230 GV *gv;
1231 CV *cv;
a687059c 1232
a0d0e21e 1233#ifdef I_STDARG
8990e307
LW
1234 va_start(args, pat);
1235#else
a687059c 1236 va_start(args);
8990e307 1237#endif
2304df62 1238 message = mess(pat, &args);
a687059c 1239 va_end(args);
20cec16a 1240 if (diehook) {
1738f5c4 1241 /* sv_2cv might call croak() */
20cec16a 1242 SV *olddiehook = diehook;
1738f5c4
CS
1243 ENTER;
1244 SAVESPTR(diehook);
1245 diehook = Nullsv;
20cec16a 1246 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS
1247 LEAVE;
1248 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1249 dSP;
774d564b
PP
1250 SV *msg;
1251
1252 ENTER;
1253 msg = newSVpv(message, 0);
1254 SvREADONLY_on(msg);
1255 SAVEFREESV(msg);
20cec16a
PP
1256
1257 PUSHMARK(sp);
1738f5c4 1258 XPUSHs(msg);
20cec16a
PP
1259 PUTBACK;
1260 perl_call_sv((SV*)cv, G_DISCARD);
36477c24 1261
774d564b 1262 LEAVE;
20cec16a 1263 }
748a9306 1264 }
a0d0e21e
LW
1265 if (in_eval) {
1266 restartop = die_where(message);
54310121 1267 JMPENV_JUMP(3);
a0d0e21e 1268 }
760ac839
LW
1269 PerlIO_puts(PerlIO_stderr(),message);
1270 (void)PerlIO_flush(PerlIO_stderr());
f86702cc 1271 my_failure_exit();
a687059c
LW
1272}
1273
8990e307 1274void
ecfc5424 1275#ifdef I_STDARG
71be2cbc 1276warn(const char* pat,...)
463ee0b2 1277#else
8990e307
LW
1278/*VARARGS0*/
1279warn(pat,va_alist)
71be2cbc 1280 const char *pat;
8990e307 1281 va_dcl
463ee0b2 1282#endif
a687059c
LW
1283{
1284 va_list args;
de3bb511 1285 char *message;
748a9306
LW
1286 HV *stash;
1287 GV *gv;
1288 CV *cv;
a687059c 1289
a0d0e21e 1290#ifdef I_STDARG
8990e307
LW
1291 va_start(args, pat);
1292#else
a687059c 1293 va_start(args);
8990e307 1294#endif
2304df62 1295 message = mess(pat, &args);
a687059c
LW
1296 va_end(args);
1297
20cec16a 1298 if (warnhook) {
1738f5c4 1299 /* sv_2cv might call warn() */
20cec16a 1300 SV *oldwarnhook = warnhook;
1738f5c4
CS
1301 ENTER;
1302 SAVESPTR(warnhook);
1303 warnhook = Nullsv;
20cec16a 1304 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS
1305 LEAVE;
1306 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1307 dSP;
774d564b
PP
1308 SV *msg;
1309
1310 ENTER;
1311 msg = newSVpv(message, 0);
1312 SvREADONLY_on(msg);
1313 SAVEFREESV(msg);
1314
20cec16a 1315 PUSHMARK(sp);
774d564b 1316 XPUSHs(msg);
20cec16a
PP
1317 PUTBACK;
1318 perl_call_sv((SV*)cv, G_DISCARD);
774d564b
PP
1319
1320 LEAVE;
20cec16a
PP
1321 return;
1322 }
748a9306 1323 }
20cec16a 1324 PerlIO_puts(PerlIO_stderr(),message);
a687059c 1325#ifdef LEAKTEST
20cec16a 1326 DEBUG_L(xstat());
a687059c 1327#endif
20cec16a 1328 (void)PerlIO_flush(PerlIO_stderr());
a687059c 1329}
8d063cd8 1330
a0d0e21e 1331#ifndef VMS /* VMS' my_setenv() is in VMS.c */
68dc0745 1332#ifndef _WIN32
8d063cd8 1333void
7c0587c8 1334my_setenv(nam,val)
8d063cd8
LW
1335char *nam, *val;
1336{
79072805 1337 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1338
fe14fcc3 1339 if (environ == origenviron) { /* need we copy environment? */
79072805
LW
1340 I32 j;
1341 I32 max;
fe14fcc3
LW
1342 char **tmpenv;
1343
de3bb511 1344 /*SUPPRESS 530*/
fe14fcc3
LW
1345 for (max = i; environ[max]; max++) ;
1346 New(901,tmpenv, max+2, char*);
1347 for (j=0; j<max; j++) /* copy environment */
a0d0e21e 1348 tmpenv[j] = savepv(environ[j]);
fe14fcc3
LW
1349 tmpenv[max] = Nullch;
1350 environ = tmpenv; /* tell exec where it is now */
1351 }
a687059c 1352 if (!val) {
e5ebf479 1353 Safefree(environ[i]);
a687059c
LW
1354 while (environ[i]) {
1355 environ[i] = environ[i+1];
1356 i++;
1357 }
1358 return;
1359 }
8d063cd8 1360 if (!environ[i]) { /* does not exist yet */
fe14fcc3 1361 Renew(environ, i+2, char*); /* just expand it a bit */
8d063cd8
LW
1362 environ[i+1] = Nullch; /* make sure it's null terminated */
1363 }
fe14fcc3
LW
1364 else
1365 Safefree(environ[i]);
a687059c 1366 New(904, environ[i], strlen(nam) + strlen(val) + 2, char);
62b28dd9 1367#ifndef MSDOS
a687059c 1368 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
62b28dd9
LW
1369#else
1370 /* MS-DOS requires environment variable names to be in uppercase */
fe14fcc3
LW
1371 /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but
1372 * some utilities and applications may break because they only look
1373 * for upper case strings. (Fixed strupr() bug here.)]
1374 */
1375 strcpy(environ[i],nam); strupr(environ[i]);
62b28dd9
LW
1376 (void)sprintf(environ[i] + strlen(nam),"=%s",val);
1377#endif /* MSDOS */
8d063cd8
LW
1378}
1379
79072805
LW
1380I32
1381setenv_getix(nam)
8d063cd8
LW
1382char *nam;
1383{
79072805 1384 register I32 i, len = strlen(nam);
8d063cd8
LW
1385
1386 for (i = 0; environ[i]; i++) {
1387 if (strnEQ(environ[i],nam,len) && environ[i][len] == '=')
1388 break; /* strnEQ must come first to avoid */
1389 } /* potential SEGV's */
1390 return i;
1391}
68dc0745
PP
1392
1393#else /* if _WIN32 */
1394
1395void
1396my_setenv(nam,val)
1397char *nam, *val;
1398{
1399 register char *envstr;
1400 STRLEN namlen = strlen(nam);
1401 STRLEN vallen = strlen(val ? val : "");
1402
1403 New(9040, envstr, namlen + vallen + 3, char);
1404 (void)sprintf(envstr,"%s=%s",nam,val);
1405 if (!vallen) {
1406 /* An attempt to delete the entry.
1407 * We try to fix a Win32 process handling goof: Children
1408 * of the current process will end up seeing the
1409 * grandparent's entry if the current process has never
1410 * modified the entry being deleted. So we call _putenv()
1411 * twice: once to pretend to modify the entry, and the
1412 * second time to actually delete it. GSAR 97-03-19
1413 */
1414 envstr[namlen+1] = 'X'; envstr[namlen+2] = '\0';
1415 (void)_putenv(envstr);
1416 envstr[namlen+1] = '\0';
1417 }
1418 (void)_putenv(envstr);
1419}
1420
1421#endif /* _WIN32 */
a0d0e21e 1422#endif /* !VMS */
378cc40b 1423
16d20bd9 1424#ifdef UNLINK_ALL_VERSIONS
79072805 1425I32
378cc40b
LW
1426unlnk(f) /* unlink all versions of a file */
1427char *f;
1428{
79072805 1429 I32 i;
378cc40b
LW
1430
1431 for (i = 0; unlink(f) >= 0; i++) ;
1432 return i ? 0 : -1;
1433}
1434#endif
1435
85e6fe83 1436#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 1437char *
7c0587c8 1438my_bcopy(from,to,len)
378cc40b
LW
1439register char *from;
1440register char *to;
79072805 1441register I32 len;
378cc40b
LW
1442{
1443 char *retval = to;
1444
7c0587c8
LW
1445 if (from - to >= 0) {
1446 while (len--)
1447 *to++ = *from++;
1448 }
1449 else {
1450 to += len;
1451 from += len;
1452 while (len--)
faf8582f 1453 *(--to) = *(--from);
7c0587c8 1454 }
378cc40b
LW
1455 return retval;
1456}
ffed7fef 1457#endif
378cc40b 1458
7c0587c8 1459#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 1460char *
7c0587c8 1461my_bzero(loc,len)
378cc40b 1462register char *loc;
79072805 1463register I32 len;
378cc40b
LW
1464{
1465 char *retval = loc;
1466
1467 while (len--)
1468 *loc++ = 0;
1469 return retval;
1470}
1471#endif
7c0587c8 1472
36477c24 1473#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 1474I32
7c0587c8 1475my_memcmp(s1,s2,len)
36477c24
PP
1476char *s1;
1477char *s2;
79072805 1478register I32 len;
7c0587c8 1479{
36477c24
PP
1480 register U8 *a = (U8 *)s1;
1481 register U8 *b = (U8 *)s2;
79072805 1482 register I32 tmp;
7c0587c8
LW
1483
1484 while (len--) {
36477c24 1485 if (tmp = *a++ - *b++)
7c0587c8
LW
1486 return tmp;
1487 }
1488 return 0;
1489}
36477c24 1490#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 1491
4633a7c4 1492#if defined(I_STDARG) || defined(I_VARARGS)
fe14fcc3 1493#ifndef HAS_VPRINTF
a687059c 1494
85e6fe83 1495#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1496char *
1497#else
1498int
1499#endif
1500vsprintf(dest, pat, args)
71be2cbc
PP
1501char *dest;
1502const char *pat;
1503char *args;
a687059c
LW
1504{
1505 FILE fakebuf;
1506
1507 fakebuf._ptr = dest;
1508 fakebuf._cnt = 32767;
35c8bce7
LW
1509#ifndef _IOSTRG
1510#define _IOSTRG 0
1511#endif
a687059c
LW
1512 fakebuf._flag = _IOWRT|_IOSTRG;
1513 _doprnt(pat, args, &fakebuf); /* what a kludge */
1514 (void)putc('\0', &fakebuf);
85e6fe83 1515#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1516 return(dest);
1517#else
1518 return 0; /* perl doesn't use return value */
1519#endif
1520}
1521
fe14fcc3 1522#endif /* HAS_VPRINTF */
4633a7c4 1523#endif /* I_VARARGS || I_STDARGS */
a687059c
LW
1524
1525#ifdef MYSWAP
ffed7fef 1526#if BYTEORDER != 0x4321
a687059c 1527short
748a9306 1528#ifndef CAN_PROTOTYPE
a687059c
LW
1529my_swap(s)
1530short s;
748a9306
LW
1531#else
1532my_swap(short s)
1533#endif
a687059c
LW
1534{
1535#if (BYTEORDER & 1) == 0
1536 short result;
1537
1538 result = ((s & 255) << 8) + ((s >> 8) & 255);
1539 return result;
1540#else
1541 return s;
1542#endif
1543}
1544
1545long
748a9306
LW
1546#ifndef CAN_PROTOTYPE
1547my_htonl(l)
a687059c 1548register long l;
748a9306
LW
1549#else
1550my_htonl(long l)
1551#endif
a687059c
LW
1552{
1553 union {
1554 long result;
ffed7fef 1555 char c[sizeof(long)];
a687059c
LW
1556 } u;
1557
ffed7fef 1558#if BYTEORDER == 0x1234
a687059c
LW
1559 u.c[0] = (l >> 24) & 255;
1560 u.c[1] = (l >> 16) & 255;
1561 u.c[2] = (l >> 8) & 255;
1562 u.c[3] = l & 255;
1563 return u.result;
1564#else
ffed7fef 1565#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1566 croak("Unknown BYTEORDER\n");
a687059c 1567#else
79072805
LW
1568 register I32 o;
1569 register I32 s;
a687059c 1570
ffed7fef
LW
1571 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1572 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW
1573 }
1574 return u.result;
1575#endif
1576#endif
1577}
1578
1579long
748a9306
LW
1580#ifndef CAN_PROTOTYPE
1581my_ntohl(l)
a687059c 1582register long l;
748a9306
LW
1583#else
1584my_ntohl(long l)
1585#endif
a687059c
LW
1586{
1587 union {
1588 long l;
ffed7fef 1589 char c[sizeof(long)];
a687059c
LW
1590 } u;
1591
ffed7fef 1592#if BYTEORDER == 0x1234
a687059c
LW
1593 u.c[0] = (l >> 24) & 255;
1594 u.c[1] = (l >> 16) & 255;
1595 u.c[2] = (l >> 8) & 255;
1596 u.c[3] = l & 255;
1597 return u.l;
1598#else
ffed7fef 1599#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1600 croak("Unknown BYTEORDER\n");
a687059c 1601#else
79072805
LW
1602 register I32 o;
1603 register I32 s;
a687059c
LW
1604
1605 u.l = l;
1606 l = 0;
ffed7fef
LW
1607 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1608 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW
1609 }
1610 return l;
1611#endif
1612#endif
1613}
1614
ffed7fef 1615#endif /* BYTEORDER != 0x4321 */
988174c1
LW
1616#endif /* MYSWAP */
1617
1618/*
1619 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
1620 * If these functions are defined,
1621 * the BYTEORDER is neither 0x1234 nor 0x4321.
1622 * However, this is not assumed.
1623 * -DWS
1624 */
1625
1626#define HTOV(name,type) \
1627 type \
1628 name (n) \
1629 register type n; \
1630 { \
1631 union { \
1632 type value; \
1633 char c[sizeof(type)]; \
1634 } u; \
79072805
LW
1635 register I32 i; \
1636 register I32 s; \
988174c1
LW
1637 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1638 u.c[i] = (n >> s) & 0xFF; \
1639 } \
1640 return u.value; \
1641 }
1642
1643#define VTOH(name,type) \
1644 type \
1645 name (n) \
1646 register type n; \
1647 { \
1648 union { \
1649 type value; \
1650 char c[sizeof(type)]; \
1651 } u; \
79072805
LW
1652 register I32 i; \
1653 register I32 s; \
988174c1
LW
1654 u.value = n; \
1655 n = 0; \
1656 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1657 n += (u.c[i] & 0xFF) << s; \
1658 } \
1659 return n; \
1660 }
1661
1662#if defined(HAS_HTOVS) && !defined(htovs)
1663HTOV(htovs,short)
1664#endif
1665#if defined(HAS_HTOVL) && !defined(htovl)
1666HTOV(htovl,long)
1667#endif
1668#if defined(HAS_VTOHS) && !defined(vtohs)
1669VTOH(vtohs,short)
1670#endif
1671#if defined(HAS_VTOHL) && !defined(vtohl)
1672VTOH(vtohl,long)
1673#endif
a687059c 1674
5f05dabc
PP
1675 /* VMS' my_popen() is in VMS.c, same with OS/2. */
1676#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS)
760ac839 1677PerlIO *
79072805 1678my_popen(cmd,mode)
a687059c
LW
1679char *cmd;
1680char *mode;
1681{
1682 int p[2];
79072805
LW
1683 register I32 this, that;
1684 register I32 pid;
1685 SV *sv;
1738f5c4 1686 I32 doexec = strNE(cmd,"-");
a687059c 1687
ddcf38b7
IZ
1688#ifdef OS2
1689 if (doexec) {
1690 return my_syspopen(cmd,mode);
1691 }
1692#endif
a687059c
LW
1693 if (pipe(p) < 0)
1694 return Nullfp;
1695 this = (*mode == 'w');
1696 that = !this;
bbce6d69
PP
1697 if (doexec && tainting) {
1698 taint_env();
1699 taint_proper("Insecure %s%s", "EXEC");
d48672a2 1700 }
a687059c
LW
1701 while ((pid = (doexec?vfork():fork())) < 0) {
1702 if (errno != EAGAIN) {
1703 close(p[this]);
1704 if (!doexec)
463ee0b2 1705 croak("Can't fork");
a687059c
LW
1706 return Nullfp;
1707 }
1708 sleep(5);
1709 }
1710 if (pid == 0) {
79072805
LW
1711 GV* tmpgv;
1712
a687059c
LW
1713#define THIS that
1714#define THAT this
1715 close(p[THAT]);
1716 if (p[THIS] != (*mode == 'r')) {
1717 dup2(p[THIS], *mode == 'r');
1718 close(p[THIS]);
1719 }
1720 if (doexec) {
a0d0e21e 1721#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW
1722 int fd;
1723
1724#ifndef NOFILE
1725#define NOFILE 20
1726#endif
d48672a2 1727 for (fd = maxsysfd + 1; fd < NOFILE; fd++)
ae986130
LW
1728 close(fd);
1729#endif
a687059c
LW
1730 do_exec(cmd); /* may or may not use the shell */
1731 _exit(1);
1732 }
de3bb511 1733 /*SUPPRESS 560*/
85e6fe83 1734 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
1e422769 1735 sv_setiv(GvSV(tmpgv), (IV)getpid());
9f68db38 1736 forkprocess = 0;
463ee0b2 1737 hv_clear(pidstatus); /* we have no children */
a687059c
LW
1738 return Nullfp;
1739#undef THIS
1740#undef THAT
1741 }
62b28dd9 1742 do_execfree(); /* free any memory malloced by child on vfork */
a687059c 1743 close(p[that]);
62b28dd9
LW
1744 if (p[that] < p[this]) {
1745 dup2(p[this], p[that]);
1746 close(p[this]);
1747 p[this] = p[that];
1748 }
79072805 1749 sv = *av_fetch(fdpid,p[this],TRUE);
a0d0e21e 1750 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 1751 SvIVX(sv) = pid;
a687059c 1752 forkprocess = pid;
760ac839 1753 return PerlIO_fdopen(p[this], mode);
a687059c 1754}
7c0587c8 1755#else
55497cff 1756#if defined(atarist) || defined(DJGPP)
7c0587c8 1757FILE *popen();
760ac839 1758PerlIO *
79072805 1759my_popen(cmd,mode)
7c0587c8
LW
1760char *cmd;
1761char *mode;
1762{
760ac839 1763 /* Needs work for PerlIO ! */
55497cff
PP
1764 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
1765 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW
1766}
1767#endif
1768
1769#endif /* !DOSISH */
a687059c 1770
748a9306 1771#ifdef DUMP_FDS
79072805 1772dump_fds(s)
ae986130
LW
1773char *s;
1774{
1775 int fd;
1776 struct stat tmpstatbuf;
1777
760ac839 1778 PerlIO_printf(PerlIO_stderr(),"%s", s);
ae986130 1779 for (fd = 0; fd < 32; fd++) {
a0d0e21e 1780 if (Fstat(fd,&tmpstatbuf) >= 0)
760ac839 1781 PerlIO_printf(PerlIO_stderr()," %d",fd);
ae986130 1782 }
760ac839 1783 PerlIO_printf(PerlIO_stderr(),"\n");
ae986130
LW
1784}
1785#endif
1786
fe14fcc3 1787#ifndef HAS_DUP2
fec02dd3 1788int
a687059c
LW
1789dup2(oldfd,newfd)
1790int oldfd;
1791int newfd;
1792{
a0d0e21e 1793#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD
1794 if (oldfd == newfd)
1795 return oldfd;
62b28dd9 1796 close(newfd);
fec02dd3 1797 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 1798#else
d48672a2 1799 int fdtmp[256];
79072805 1800 I32 fdx = 0;
ae986130
LW
1801 int fd;
1802
fe14fcc3 1803 if (oldfd == newfd)
fec02dd3 1804 return oldfd;
a687059c 1805 close(newfd);
fec02dd3 1806 while ((fd = dup(oldfd)) != newfd && fd >= 0) /* good enough for low fd's */
ae986130
LW
1807 fdtmp[fdx++] = fd;
1808 while (fdx > 0)
1809 close(fdtmp[--fdx]);
fec02dd3 1810 return fd;
62b28dd9 1811#endif
a687059c
LW
1812}
1813#endif
1814
ff68c719
PP
1815
1816#ifdef HAS_SIGACTION
1817
1818Sighandler_t
1819rsignal(signo, handler)
1820int signo;
1821Sighandler_t handler;
1822{
1823 struct sigaction act, oact;
1824
1825 act.sa_handler = handler;
1826 sigemptyset(&act.sa_mask);
1827 act.sa_flags = 0;
1828#ifdef SA_RESTART
1829 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
1830#endif
1831 if (sigaction(signo, &act, &oact) == -1)
36477c24 1832 return SIG_ERR;
ff68c719 1833 else
36477c24 1834 return oact.sa_handler;
ff68c719
PP
1835}
1836
1837Sighandler_t
1838rsignal_state(signo)
1839int signo;
1840{
1841 struct sigaction oact;
1842
1843 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
1844 return SIG_ERR;
1845 else
1846 return oact.sa_handler;
1847}
1848
1849int
1850rsignal_save(signo, handler, save)
1851int signo;
1852Sighandler_t handler;
1853Sigsave_t *save;
1854{
1855 struct sigaction act;
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 return sigaction(signo, &act, save);
1864}
1865
1866int
1867rsignal_restore(signo, save)
1868int signo;
1869Sigsave_t *save;
1870{
1871 return sigaction(signo, save, (struct sigaction *)NULL);
1872}
1873
1874#else /* !HAS_SIGACTION */
1875
1876Sighandler_t
1877rsignal(signo, handler)
1878int signo;
1879Sighandler_t handler;
1880{
1881 return signal(signo, handler);
1882}
1883
1884static int sig_trapped;
1885
1886static
1887Signal_t
1888sig_trap(signo)
1889int signo;
1890{
1891 sig_trapped++;
1892}
1893
1894Sighandler_t
1895rsignal_state(signo)
1896int signo;
1897{
1898 Sighandler_t oldsig;
1899
1900 sig_trapped = 0;
1901 oldsig = signal(signo, sig_trap);
1902 signal(signo, oldsig);
1903 if (sig_trapped)
1904 kill(getpid(), signo);
1905 return oldsig;
1906}
1907
1908int
1909rsignal_save(signo, handler, save)
1910int signo;
1911Sighandler_t handler;
1912Sigsave_t *save;
1913{
1914 *save = signal(signo, handler);
1915 return (*save == SIG_ERR) ? -1 : 0;
1916}
1917
1918int
36477c24 1919rsignal_restore(signo, save)
ff68c719
PP
1920int signo;
1921Sigsave_t *save;
1922{
1923 return (signal(signo, *save) == SIG_ERR) ? -1 : 0;
1924}
1925
1926#endif /* !HAS_SIGACTION */
1927
5f05dabc
PP
1928 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
1929#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS)
79072805
LW
1930I32
1931my_pclose(ptr)
760ac839 1932PerlIO *ptr;
a687059c 1933{
ff68c719 1934 Sigsave_t hstat, istat, qstat;
a687059c 1935 int status;
a0d0e21e 1936 SV **svp;
20188a90 1937 int pid;
a687059c 1938
760ac839 1939 svp = av_fetch(fdpid,PerlIO_fileno(ptr),TRUE);
748a9306 1940 pid = (int)SvIVX(*svp);
a0d0e21e
LW
1941 SvREFCNT_dec(*svp);
1942 *svp = &sv_undef;
ddcf38b7
IZ
1943#ifdef OS2
1944 if (pid == -1) { /* Opened by popen. */
1945 return my_syspclose(ptr);
1946 }
1947#endif
760ac839 1948 PerlIO_close(ptr);
7c0587c8
LW
1949#ifdef UTS
1950 if(kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
1951#endif
ff68c719
PP
1952 rsignal_save(SIGHUP, SIG_IGN, &hstat);
1953 rsignal_save(SIGINT, SIG_IGN, &istat);
1954 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306
LW
1955 do {
1956 pid = wait4pid(pid, &status, 0);
1957 } while (pid == -1 && errno == EINTR);
ff68c719
PP
1958 rsignal_restore(SIGHUP, &hstat);
1959 rsignal_restore(SIGINT, &istat);
1960 rsignal_restore(SIGQUIT, &qstat);
20188a90
LW
1961 return(pid < 0 ? pid : status);
1962}
4633a7c4
LW
1963#endif /* !DOSISH */
1964
1965#if !defined(DOSISH) || defined(OS2)
79072805 1966I32
20188a90
LW
1967wait4pid(pid,statusp,flags)
1968int pid;
1969int *statusp;
1970int flags;
1971{
79072805
LW
1972 SV *sv;
1973 SV** svp;
20188a90
LW
1974 char spid[16];
1975
1976 if (!pid)
1977 return -1;
20188a90
LW
1978 if (pid > 0) {
1979 sprintf(spid, "%d", pid);
79072805
LW
1980 svp = hv_fetch(pidstatus,spid,strlen(spid),FALSE);
1981 if (svp && *svp != &sv_undef) {
463ee0b2 1982 *statusp = SvIVX(*svp);
748a9306 1983 (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
1984 return pid;
1985 }
1986 }
1987 else {
79072805 1988 HE *entry;
20188a90 1989
79072805
LW
1990 hv_iterinit(pidstatus);
1991 if (entry = hv_iternext(pidstatus)) {
a0d0e21e 1992 pid = atoi(hv_iterkey(entry,(I32*)statusp));
79072805 1993 sv = hv_iterval(pidstatus,entry);
463ee0b2 1994 *statusp = SvIVX(sv);
20188a90 1995 sprintf(spid, "%d", pid);
748a9306 1996 (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
1997 return pid;
1998 }
1999 }
79072805
LW
2000#ifdef HAS_WAITPID
2001 return waitpid(pid,statusp,flags);
2002#else
a0d0e21e
LW
2003#ifdef HAS_WAIT4
2004 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
2005#else
2006 {
2007 I32 result;
2008 if (flags)
2009 croak("Can't do waitpid with flags");
2010 else {
2011 while ((result = wait(statusp)) != pid && pid > 0 && result >= 0)
2012 pidgone(result,*statusp);
2013 if (result < 0)
2014 *statusp = -1;
2015 }
2016 return result;
a687059c
LW
2017 }
2018#endif
20188a90 2019#endif
a687059c 2020}
7c0587c8 2021#endif /* !DOSISH */
a687059c 2022
7c0587c8 2023void
de3bb511 2024/*SUPPRESS 590*/
a687059c
LW
2025pidgone(pid,status)
2026int pid;
2027int status;
2028{
79072805 2029 register SV *sv;
20188a90 2030 char spid[16];
a687059c 2031
20188a90 2032 sprintf(spid, "%d", pid);
79072805 2033 sv = *hv_fetch(pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2034 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2035 SvIVX(sv) = status;
20188a90 2036 return;
a687059c
LW
2037}
2038
55497cff 2039#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2040int pclose();
ddcf38b7
IZ
2041#ifdef HAS_FORK
2042int /* Cannot prototype with I32
2043 in os2ish.h. */
2044my_syspclose(ptr)
2045#else
79072805
LW
2046I32
2047my_pclose(ptr)
ddcf38b7 2048#endif
760ac839 2049PerlIO *ptr;
a687059c 2050{
760ac839
LW
2051 /* Needs work for PerlIO ! */
2052 FILE *f = PerlIO_findFILE(ptr);
2053 I32 result = pclose(f);
2054 PerlIO_releaseFILE(ptr,f);
2055 return result;
a687059c 2056}
7c0587c8 2057#endif
9f68db38
LW
2058
2059void
2060repeatcpy(to,from,len,count)
2061register char *to;
2062register char *from;
79072805
LW
2063I32 len;
2064register I32 count;
9f68db38 2065{
79072805 2066 register I32 todo;
9f68db38
LW
2067 register char *frombase = from;
2068
2069 if (len == 1) {
2070 todo = *from;
2071 while (count-- > 0)
2072 *to++ = todo;
2073 return;
2074 }
2075 while (count-- > 0) {
2076 for (todo = len; todo > 0; todo--) {
2077 *to++ = *from++;
2078 }
2079 from = frombase;
2080 }
2081}
0f85fab0
LW
2082
2083#ifndef CASTNEGFLOAT
463ee0b2 2084U32
79072805 2085cast_ulong(f)
0f85fab0
LW
2086double f;
2087{
2088 long along;
2089
27e2fb84 2090#if CASTFLAGS & 2
34de22dd
LW
2091# define BIGDOUBLE 2147483648.0
2092 if (f >= BIGDOUBLE)
2093 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2094#endif
0f85fab0
LW
2095 if (f >= 0.0)
2096 return (unsigned long)f;
2097 along = (long)f;
2098 return (unsigned long)along;
2099}
ed6116ce
LW
2100# undef BIGDOUBLE
2101#endif
2102
2103#ifndef CASTI32
5d94fbed 2104
5d94fbed
AD
2105/* Unfortunately, on some systems the cast_uv() function doesn't
2106 work with the system-supplied definition of ULONG_MAX. The
2107 comparison (f >= ULONG_MAX) always comes out true. It must be a
2108 problem with the compiler constant folding.
2109
2110 In any case, this workaround should be fine on any two's complement
2111 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2112 ccflags.
2113 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2114*/
1eb770ff
PP
2115
2116/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2117 of LONG_(MIN/MAX).
2118 -- Kenneth Albanowski <kjahds@kjahds.com>
2119*/
2120
20cec16a
PP
2121#ifndef MY_UV_MAX
2122# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD
2123#endif
2124
ed6116ce
LW
2125I32
2126cast_i32(f)
2127double f;
2128{
20cec16a
PP
2129 if (f >= I32_MAX)
2130 return (I32) I32_MAX;
2131 if (f <= I32_MIN)
2132 return (I32) I32_MIN;
ed6116ce
LW
2133 return (I32) f;
2134}
a0d0e21e
LW
2135
2136IV
2137cast_iv(f)
2138double f;
2139{
20cec16a
PP
2140 if (f >= IV_MAX)
2141 return (IV) IV_MAX;
2142 if (f <= IV_MIN)
2143 return (IV) IV_MIN;
a0d0e21e
LW
2144 return (IV) f;
2145}
5d94fbed
AD
2146
2147UV
2148cast_uv(f)
2149double f;
2150{
20cec16a
PP
2151 if (f >= MY_UV_MAX)
2152 return (UV) MY_UV_MAX;
5d94fbed
AD
2153 return (UV) f;
2154}
2155
0f85fab0 2156#endif
62b28dd9 2157
fe14fcc3 2158#ifndef HAS_RENAME
79072805 2159I32
62b28dd9
LW
2160same_dirent(a,b)
2161char *a;
2162char *b;
2163{
93a17b20
LW
2164 char *fa = strrchr(a,'/');
2165 char *fb = strrchr(b,'/');
62b28dd9
LW
2166 struct stat tmpstatbuf1;
2167 struct stat tmpstatbuf2;
2168#ifndef MAXPATHLEN
2169#define MAXPATHLEN 1024
2170#endif
2171 char tmpbuf[MAXPATHLEN+1];
2172
2173 if (fa)
2174 fa++;
2175 else
2176 fa = a;
2177 if (fb)
2178 fb++;
2179 else
2180 fb = b;
2181 if (strNE(a,b))
2182 return FALSE;
2183 if (fa == a)
6eb13c3b 2184 strcpy(tmpbuf,".");
62b28dd9
LW
2185 else
2186 strncpy(tmpbuf, a, fa - a);
a0d0e21e 2187 if (Stat(tmpbuf, &tmpstatbuf1) < 0)
62b28dd9
LW
2188 return FALSE;
2189 if (fb == b)
6eb13c3b 2190 strcpy(tmpbuf,".");
62b28dd9
LW
2191 else
2192 strncpy(tmpbuf, b, fb - b);
a0d0e21e 2193 if (Stat(tmpbuf, &tmpstatbuf2) < 0)
62b28dd9
LW
2194 return FALSE;
2195 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2196 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2197}
fe14fcc3
LW
2198#endif /* !HAS_RENAME */
2199
55497cff 2200UV
79072805 2201scan_oct(start, len, retlen)
fe14fcc3 2202char *start;
79072805
LW
2203I32 len;
2204I32 *retlen;
fe14fcc3
LW
2205{
2206 register char *s = start;
55497cff
PP
2207 register UV retval = 0;
2208 bool overflowed = FALSE;
fe14fcc3 2209
748a9306 2210 while (len && *s >= '0' && *s <= '7') {
55497cff
PP
2211 register UV n = retval << 3;
2212 if (!overflowed && (n >> 3) != retval) {
2213 warn("Integer overflow in octal number");
2214 overflowed = TRUE;
2215 }
2216 retval = n | (*s++ - '0');
748a9306 2217 len--;
fe14fcc3 2218 }
748a9306
LW
2219 if (dowarn && len && (*s == '8' || *s == '9'))
2220 warn("Illegal octal digit ignored");
fe14fcc3
LW
2221 *retlen = s - start;
2222 return retval;
2223}
2224
71be2cbc 2225UV
79072805 2226scan_hex(start, len, retlen)
fe14fcc3 2227char *start;
79072805
LW
2228I32 len;
2229I32 *retlen;
fe14fcc3
LW
2230{
2231 register char *s = start;
55497cff
PP
2232 register UV retval = 0;
2233 bool overflowed = FALSE;
fe14fcc3
LW
2234 char *tmp;
2235
93a17b20 2236 while (len-- && *s && (tmp = strchr(hexdigit, *s))) {
55497cff
PP
2237 register UV n = retval << 4;
2238 if (!overflowed && (n >> 4) != retval) {
2239 warn("Integer overflow in hex number");
2240 overflowed = TRUE;
2241 }
2242 retval = n | (tmp - hexdigit) & 15;
fe14fcc3
LW
2243 s++;
2244 }
2245 *retlen = s - start;
2246 return retval;
2247}
760ac839
LW
2248
2249
2250#ifdef HUGE_VAL
2251/*
2252 * This hack is to force load of "huge" support from libm.a
2253 * So it is in perl for (say) POSIX to use.
2254 * Needed for SunOS with Sun's 'acc' for example.
2255 */
2256double
2257Perl_huge()
2258{
2259 return HUGE_VAL;
2260}
2261#endif