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Remove bad advice from perllocale.pod
[perl5.git] / util.c
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a0d0e21e 1/* util.c
a687059c 2 *
a0d0e21e 3 * Copyright (c) 1991-1994, 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
a687059c 153void
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
188#if !(defined(I286) || defined(atarist))
760ac839 189 DEBUG_m(PerlIO_printf(PerlIO_stderr(), "0x%x: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
1050c9ca 190#else
760ac839 191 DEBUG_m(PerlIO_printf(PerlIO_stderr(), "0x%lx: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
1050c9ca
PP
192#endif
193 size *= count;
194 ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */
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;
1162 int oldrunlevel = runlevel;
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;
1194 SV *msg = sv_2mortal(newSVpv(message, 0));
1195
1196 PUSHMARK(sp);
1197 XPUSHs(msg);
1198 PUTBACK;
1199 perl_call_sv((SV*)cv, G_DISCARD);
1200
1201 /* It's okay for the __DIE__ hook to modify the message. */
1202 message = SvPV(msg, na);
1203 }
36477c24
PP
1204 }
1205
1206 restartop = die_where(message);
1207 if ((!restartop && was_in_eval) || oldrunlevel > 1)
1208 Siglongjmp(top_env, 3);
1209 return restartop;
1210}
1211
1212#ifdef I_STDARG
79072805 1213void
71be2cbc 1214croak(const char* pat, ...)
463ee0b2 1215#else
8990e307
LW
1216/*VARARGS0*/
1217void
1218croak(pat, va_alist)
1219 char *pat;
1220 va_dcl
463ee0b2 1221#endif
a687059c
LW
1222{
1223 va_list args;
de3bb511 1224 char *message;
748a9306
LW
1225 HV *stash;
1226 GV *gv;
1227 CV *cv;
a687059c 1228
a0d0e21e 1229#ifdef I_STDARG
8990e307
LW
1230 va_start(args, pat);
1231#else
a687059c 1232 va_start(args);
8990e307 1233#endif
2304df62 1234 message = mess(pat, &args);
a687059c 1235 va_end(args);
20cec16a 1236 if (diehook) {
1738f5c4 1237 /* sv_2cv might call croak() */
20cec16a 1238 SV *olddiehook = diehook;
1738f5c4
CS
1239 ENTER;
1240 SAVESPTR(diehook);
1241 diehook = Nullsv;
20cec16a 1242 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS
1243 LEAVE;
1244 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1245 dSP;
36477c24 1246 SV *msg = sv_2mortal(newSVpv(message, 0));
20cec16a
PP
1247
1248 PUSHMARK(sp);
1738f5c4 1249 XPUSHs(msg);
20cec16a
PP
1250 PUTBACK;
1251 perl_call_sv((SV*)cv, G_DISCARD);
36477c24
PP
1252
1253 /* It's okay for the __DIE__ hook to modify the message. */
1254 message = SvPV(msg, na);
20cec16a 1255 }
748a9306 1256 }
a0d0e21e
LW
1257 if (in_eval) {
1258 restartop = die_where(message);
a5f75d66 1259 Siglongjmp(top_env, 3);
a0d0e21e 1260 }
760ac839
LW
1261 PerlIO_puts(PerlIO_stderr(),message);
1262 (void)PerlIO_flush(PerlIO_stderr());
38cd9116
PP
1263 if (e_tmpname) {
1264 if (e_fp) {
760ac839 1265 PerlIO_close(e_fp);
38cd9116
PP
1266 e_fp = Nullfp;
1267 }
a687059c 1268 (void)UNLINK(e_tmpname);
38cd9116
PP
1269 Safefree(e_tmpname);
1270 e_tmpname = Nullch;
f0c5b223 1271 }
748a9306
LW
1272 statusvalue = SHIFTSTATUS(statusvalue);
1273#ifdef VMS
1274 my_exit((U32)(vaxc$errno?vaxc$errno:(statusvalue?statusvalue:44)));
1275#else
1276 my_exit((U32)((errno&255)?errno:((statusvalue&255)?statusvalue:255)));
1277#endif
a687059c
LW
1278}
1279
8990e307 1280void
ecfc5424 1281#ifdef I_STDARG
71be2cbc 1282warn(const char* pat,...)
463ee0b2 1283#else
8990e307
LW
1284/*VARARGS0*/
1285warn(pat,va_alist)
71be2cbc 1286 const char *pat;
8990e307 1287 va_dcl
463ee0b2 1288#endif
a687059c
LW
1289{
1290 va_list args;
de3bb511 1291 char *message;
748a9306
LW
1292 HV *stash;
1293 GV *gv;
1294 CV *cv;
a687059c 1295
a0d0e21e 1296#ifdef I_STDARG
8990e307
LW
1297 va_start(args, pat);
1298#else
a687059c 1299 va_start(args);
8990e307 1300#endif
2304df62 1301 message = mess(pat, &args);
a687059c
LW
1302 va_end(args);
1303
20cec16a 1304 if (warnhook) {
1738f5c4 1305 /* sv_2cv might call warn() */
20cec16a 1306 SV *oldwarnhook = warnhook;
1738f5c4
CS
1307 ENTER;
1308 SAVESPTR(warnhook);
1309 warnhook = Nullsv;
20cec16a 1310 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS
1311 LEAVE;
1312 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1313 dSP;
20cec16a 1314 PUSHMARK(sp);
1738f5c4 1315 XPUSHs(sv_2mortal(newSVpv(message,0)));
20cec16a
PP
1316 PUTBACK;
1317 perl_call_sv((SV*)cv, G_DISCARD);
1318 return;
1319 }
748a9306 1320 }
20cec16a 1321 PerlIO_puts(PerlIO_stderr(),message);
a687059c 1322#ifdef LEAKTEST
20cec16a 1323 DEBUG_L(xstat());
a687059c 1324#endif
20cec16a 1325 (void)PerlIO_flush(PerlIO_stderr());
a687059c 1326}
8d063cd8 1327
a0d0e21e 1328#ifndef VMS /* VMS' my_setenv() is in VMS.c */
8d063cd8 1329void
7c0587c8 1330my_setenv(nam,val)
8d063cd8
LW
1331char *nam, *val;
1332{
79072805 1333 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1334
fe14fcc3 1335 if (environ == origenviron) { /* need we copy environment? */
79072805
LW
1336 I32 j;
1337 I32 max;
fe14fcc3
LW
1338 char **tmpenv;
1339
de3bb511 1340 /*SUPPRESS 530*/
fe14fcc3
LW
1341 for (max = i; environ[max]; max++) ;
1342 New(901,tmpenv, max+2, char*);
1343 for (j=0; j<max; j++) /* copy environment */
a0d0e21e 1344 tmpenv[j] = savepv(environ[j]);
fe14fcc3
LW
1345 tmpenv[max] = Nullch;
1346 environ = tmpenv; /* tell exec where it is now */
1347 }
a687059c
LW
1348 if (!val) {
1349 while (environ[i]) {
1350 environ[i] = environ[i+1];
1351 i++;
1352 }
1353 return;
1354 }
8d063cd8 1355 if (!environ[i]) { /* does not exist yet */
fe14fcc3 1356 Renew(environ, i+2, char*); /* just expand it a bit */
8d063cd8
LW
1357 environ[i+1] = Nullch; /* make sure it's null terminated */
1358 }
fe14fcc3
LW
1359 else
1360 Safefree(environ[i]);
a687059c 1361 New(904, environ[i], strlen(nam) + strlen(val) + 2, char);
62b28dd9 1362#ifndef MSDOS
a687059c 1363 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
62b28dd9
LW
1364#else
1365 /* MS-DOS requires environment variable names to be in uppercase */
fe14fcc3
LW
1366 /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but
1367 * some utilities and applications may break because they only look
1368 * for upper case strings. (Fixed strupr() bug here.)]
1369 */
1370 strcpy(environ[i],nam); strupr(environ[i]);
62b28dd9
LW
1371 (void)sprintf(environ[i] + strlen(nam),"=%s",val);
1372#endif /* MSDOS */
8d063cd8
LW
1373}
1374
79072805
LW
1375I32
1376setenv_getix(nam)
8d063cd8
LW
1377char *nam;
1378{
79072805 1379 register I32 i, len = strlen(nam);
8d063cd8
LW
1380
1381 for (i = 0; environ[i]; i++) {
1382 if (strnEQ(environ[i],nam,len) && environ[i][len] == '=')
1383 break; /* strnEQ must come first to avoid */
1384 } /* potential SEGV's */
1385 return i;
1386}
a0d0e21e 1387#endif /* !VMS */
378cc40b 1388
16d20bd9 1389#ifdef UNLINK_ALL_VERSIONS
79072805 1390I32
378cc40b
LW
1391unlnk(f) /* unlink all versions of a file */
1392char *f;
1393{
79072805 1394 I32 i;
378cc40b
LW
1395
1396 for (i = 0; unlink(f) >= 0; i++) ;
1397 return i ? 0 : -1;
1398}
1399#endif
1400
85e6fe83 1401#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 1402char *
7c0587c8 1403my_bcopy(from,to,len)
378cc40b
LW
1404register char *from;
1405register char *to;
79072805 1406register I32 len;
378cc40b
LW
1407{
1408 char *retval = to;
1409
7c0587c8
LW
1410 if (from - to >= 0) {
1411 while (len--)
1412 *to++ = *from++;
1413 }
1414 else {
1415 to += len;
1416 from += len;
1417 while (len--)
faf8582f 1418 *(--to) = *(--from);
7c0587c8 1419 }
378cc40b
LW
1420 return retval;
1421}
ffed7fef 1422#endif
378cc40b 1423
7c0587c8 1424#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 1425char *
7c0587c8 1426my_bzero(loc,len)
378cc40b 1427register char *loc;
79072805 1428register I32 len;
378cc40b
LW
1429{
1430 char *retval = loc;
1431
1432 while (len--)
1433 *loc++ = 0;
1434 return retval;
1435}
1436#endif
7c0587c8 1437
36477c24 1438#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 1439I32
7c0587c8 1440my_memcmp(s1,s2,len)
36477c24
PP
1441char *s1;
1442char *s2;
79072805 1443register I32 len;
7c0587c8 1444{
36477c24
PP
1445 register U8 *a = (U8 *)s1;
1446 register U8 *b = (U8 *)s2;
79072805 1447 register I32 tmp;
7c0587c8
LW
1448
1449 while (len--) {
36477c24 1450 if (tmp = *a++ - *b++)
7c0587c8
LW
1451 return tmp;
1452 }
1453 return 0;
1454}
36477c24 1455#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 1456
4633a7c4 1457#if defined(I_STDARG) || defined(I_VARARGS)
fe14fcc3 1458#ifndef HAS_VPRINTF
a687059c 1459
85e6fe83 1460#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1461char *
1462#else
1463int
1464#endif
1465vsprintf(dest, pat, args)
71be2cbc
PP
1466char *dest;
1467const char *pat;
1468char *args;
a687059c
LW
1469{
1470 FILE fakebuf;
1471
1472 fakebuf._ptr = dest;
1473 fakebuf._cnt = 32767;
35c8bce7
LW
1474#ifndef _IOSTRG
1475#define _IOSTRG 0
1476#endif
a687059c
LW
1477 fakebuf._flag = _IOWRT|_IOSTRG;
1478 _doprnt(pat, args, &fakebuf); /* what a kludge */
1479 (void)putc('\0', &fakebuf);
85e6fe83 1480#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1481 return(dest);
1482#else
1483 return 0; /* perl doesn't use return value */
1484#endif
1485}
1486
fe14fcc3 1487#endif /* HAS_VPRINTF */
4633a7c4 1488#endif /* I_VARARGS || I_STDARGS */
a687059c
LW
1489
1490#ifdef MYSWAP
ffed7fef 1491#if BYTEORDER != 0x4321
a687059c 1492short
748a9306 1493#ifndef CAN_PROTOTYPE
a687059c
LW
1494my_swap(s)
1495short s;
748a9306
LW
1496#else
1497my_swap(short s)
1498#endif
a687059c
LW
1499{
1500#if (BYTEORDER & 1) == 0
1501 short result;
1502
1503 result = ((s & 255) << 8) + ((s >> 8) & 255);
1504 return result;
1505#else
1506 return s;
1507#endif
1508}
1509
1510long
748a9306
LW
1511#ifndef CAN_PROTOTYPE
1512my_htonl(l)
a687059c 1513register long l;
748a9306
LW
1514#else
1515my_htonl(long l)
1516#endif
a687059c
LW
1517{
1518 union {
1519 long result;
ffed7fef 1520 char c[sizeof(long)];
a687059c
LW
1521 } u;
1522
ffed7fef 1523#if BYTEORDER == 0x1234
a687059c
LW
1524 u.c[0] = (l >> 24) & 255;
1525 u.c[1] = (l >> 16) & 255;
1526 u.c[2] = (l >> 8) & 255;
1527 u.c[3] = l & 255;
1528 return u.result;
1529#else
ffed7fef 1530#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1531 croak("Unknown BYTEORDER\n");
a687059c 1532#else
79072805
LW
1533 register I32 o;
1534 register I32 s;
a687059c 1535
ffed7fef
LW
1536 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1537 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW
1538 }
1539 return u.result;
1540#endif
1541#endif
1542}
1543
1544long
748a9306
LW
1545#ifndef CAN_PROTOTYPE
1546my_ntohl(l)
a687059c 1547register long l;
748a9306
LW
1548#else
1549my_ntohl(long l)
1550#endif
a687059c
LW
1551{
1552 union {
1553 long l;
ffed7fef 1554 char c[sizeof(long)];
a687059c
LW
1555 } u;
1556
ffed7fef 1557#if BYTEORDER == 0x1234
a687059c
LW
1558 u.c[0] = (l >> 24) & 255;
1559 u.c[1] = (l >> 16) & 255;
1560 u.c[2] = (l >> 8) & 255;
1561 u.c[3] = l & 255;
1562 return u.l;
1563#else
ffed7fef 1564#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1565 croak("Unknown BYTEORDER\n");
a687059c 1566#else
79072805
LW
1567 register I32 o;
1568 register I32 s;
a687059c
LW
1569
1570 u.l = l;
1571 l = 0;
ffed7fef
LW
1572 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1573 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW
1574 }
1575 return l;
1576#endif
1577#endif
1578}
1579
ffed7fef 1580#endif /* BYTEORDER != 0x4321 */
988174c1
LW
1581#endif /* MYSWAP */
1582
1583/*
1584 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
1585 * If these functions are defined,
1586 * the BYTEORDER is neither 0x1234 nor 0x4321.
1587 * However, this is not assumed.
1588 * -DWS
1589 */
1590
1591#define HTOV(name,type) \
1592 type \
1593 name (n) \
1594 register type n; \
1595 { \
1596 union { \
1597 type value; \
1598 char c[sizeof(type)]; \
1599 } u; \
79072805
LW
1600 register I32 i; \
1601 register I32 s; \
988174c1
LW
1602 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1603 u.c[i] = (n >> s) & 0xFF; \
1604 } \
1605 return u.value; \
1606 }
1607
1608#define VTOH(name,type) \
1609 type \
1610 name (n) \
1611 register type n; \
1612 { \
1613 union { \
1614 type value; \
1615 char c[sizeof(type)]; \
1616 } u; \
79072805
LW
1617 register I32 i; \
1618 register I32 s; \
988174c1
LW
1619 u.value = n; \
1620 n = 0; \
1621 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1622 n += (u.c[i] & 0xFF) << s; \
1623 } \
1624 return n; \
1625 }
1626
1627#if defined(HAS_HTOVS) && !defined(htovs)
1628HTOV(htovs,short)
1629#endif
1630#if defined(HAS_HTOVL) && !defined(htovl)
1631HTOV(htovl,long)
1632#endif
1633#if defined(HAS_VTOHS) && !defined(vtohs)
1634VTOH(vtohs,short)
1635#endif
1636#if defined(HAS_VTOHL) && !defined(vtohl)
1637VTOH(vtohl,long)
1638#endif
a687059c 1639
5f05dabc
PP
1640 /* VMS' my_popen() is in VMS.c, same with OS/2. */
1641#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS)
760ac839 1642PerlIO *
79072805 1643my_popen(cmd,mode)
a687059c
LW
1644char *cmd;
1645char *mode;
1646{
1647 int p[2];
79072805
LW
1648 register I32 this, that;
1649 register I32 pid;
1650 SV *sv;
1738f5c4 1651 I32 doexec = strNE(cmd,"-");
a687059c 1652
ddcf38b7
IZ
1653#ifdef OS2
1654 if (doexec) {
1655 return my_syspopen(cmd,mode);
1656 }
1657#endif
a687059c
LW
1658 if (pipe(p) < 0)
1659 return Nullfp;
1660 this = (*mode == 'w');
1661 that = !this;
bbce6d69
PP
1662 if (doexec && tainting) {
1663 taint_env();
1664 taint_proper("Insecure %s%s", "EXEC");
d48672a2 1665 }
a687059c
LW
1666 while ((pid = (doexec?vfork():fork())) < 0) {
1667 if (errno != EAGAIN) {
1668 close(p[this]);
1669 if (!doexec)
463ee0b2 1670 croak("Can't fork");
a687059c
LW
1671 return Nullfp;
1672 }
1673 sleep(5);
1674 }
1675 if (pid == 0) {
79072805
LW
1676 GV* tmpgv;
1677
a687059c
LW
1678#define THIS that
1679#define THAT this
1680 close(p[THAT]);
1681 if (p[THIS] != (*mode == 'r')) {
1682 dup2(p[THIS], *mode == 'r');
1683 close(p[THIS]);
1684 }
1685 if (doexec) {
a0d0e21e 1686#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW
1687 int fd;
1688
1689#ifndef NOFILE
1690#define NOFILE 20
1691#endif
d48672a2 1692 for (fd = maxsysfd + 1; fd < NOFILE; fd++)
ae986130
LW
1693 close(fd);
1694#endif
a687059c
LW
1695 do_exec(cmd); /* may or may not use the shell */
1696 _exit(1);
1697 }
de3bb511 1698 /*SUPPRESS 560*/
85e6fe83 1699 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
79072805 1700 sv_setiv(GvSV(tmpgv),(I32)getpid());
9f68db38 1701 forkprocess = 0;
463ee0b2 1702 hv_clear(pidstatus); /* we have no children */
a687059c
LW
1703 return Nullfp;
1704#undef THIS
1705#undef THAT
1706 }
62b28dd9 1707 do_execfree(); /* free any memory malloced by child on vfork */
a687059c 1708 close(p[that]);
62b28dd9
LW
1709 if (p[that] < p[this]) {
1710 dup2(p[this], p[that]);
1711 close(p[this]);
1712 p[this] = p[that];
1713 }
79072805 1714 sv = *av_fetch(fdpid,p[this],TRUE);
a0d0e21e 1715 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 1716 SvIVX(sv) = pid;
a687059c 1717 forkprocess = pid;
760ac839 1718 return PerlIO_fdopen(p[this], mode);
a687059c 1719}
7c0587c8 1720#else
55497cff 1721#if defined(atarist) || defined(DJGPP)
7c0587c8 1722FILE *popen();
760ac839 1723PerlIO *
79072805 1724my_popen(cmd,mode)
7c0587c8
LW
1725char *cmd;
1726char *mode;
1727{
760ac839 1728 /* Needs work for PerlIO ! */
55497cff
PP
1729 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
1730 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW
1731}
1732#endif
1733
1734#endif /* !DOSISH */
a687059c 1735
748a9306 1736#ifdef DUMP_FDS
79072805 1737dump_fds(s)
ae986130
LW
1738char *s;
1739{
1740 int fd;
1741 struct stat tmpstatbuf;
1742
760ac839 1743 PerlIO_printf(PerlIO_stderr(),"%s", s);
ae986130 1744 for (fd = 0; fd < 32; fd++) {
a0d0e21e 1745 if (Fstat(fd,&tmpstatbuf) >= 0)
760ac839 1746 PerlIO_printf(PerlIO_stderr()," %d",fd);
ae986130 1747 }
760ac839 1748 PerlIO_printf(PerlIO_stderr(),"\n");
ae986130
LW
1749}
1750#endif
1751
fe14fcc3 1752#ifndef HAS_DUP2
fec02dd3 1753int
a687059c
LW
1754dup2(oldfd,newfd)
1755int oldfd;
1756int newfd;
1757{
a0d0e21e 1758#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD
1759 if (oldfd == newfd)
1760 return oldfd;
62b28dd9 1761 close(newfd);
fec02dd3 1762 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 1763#else
d48672a2 1764 int fdtmp[256];
79072805 1765 I32 fdx = 0;
ae986130
LW
1766 int fd;
1767
fe14fcc3 1768 if (oldfd == newfd)
fec02dd3 1769 return oldfd;
a687059c 1770 close(newfd);
fec02dd3 1771 while ((fd = dup(oldfd)) != newfd && fd >= 0) /* good enough for low fd's */
ae986130
LW
1772 fdtmp[fdx++] = fd;
1773 while (fdx > 0)
1774 close(fdtmp[--fdx]);
fec02dd3 1775 return fd;
62b28dd9 1776#endif
a687059c
LW
1777}
1778#endif
1779
ff68c719
PP
1780
1781#ifdef HAS_SIGACTION
1782
1783Sighandler_t
1784rsignal(signo, handler)
1785int signo;
1786Sighandler_t handler;
1787{
1788 struct sigaction act, oact;
1789
1790 act.sa_handler = handler;
1791 sigemptyset(&act.sa_mask);
1792 act.sa_flags = 0;
1793#ifdef SA_RESTART
1794 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
1795#endif
1796 if (sigaction(signo, &act, &oact) == -1)
36477c24 1797 return SIG_ERR;
ff68c719 1798 else
36477c24 1799 return oact.sa_handler;
ff68c719
PP
1800}
1801
1802Sighandler_t
1803rsignal_state(signo)
1804int signo;
1805{
1806 struct sigaction oact;
1807
1808 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
1809 return SIG_ERR;
1810 else
1811 return oact.sa_handler;
1812}
1813
1814int
1815rsignal_save(signo, handler, save)
1816int signo;
1817Sighandler_t handler;
1818Sigsave_t *save;
1819{
1820 struct sigaction act;
1821
1822 act.sa_handler = handler;
1823 sigemptyset(&act.sa_mask);
1824 act.sa_flags = 0;
1825#ifdef SA_RESTART
1826 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
1827#endif
1828 return sigaction(signo, &act, save);
1829}
1830
1831int
1832rsignal_restore(signo, save)
1833int signo;
1834Sigsave_t *save;
1835{
1836 return sigaction(signo, save, (struct sigaction *)NULL);
1837}
1838
1839#else /* !HAS_SIGACTION */
1840
1841Sighandler_t
1842rsignal(signo, handler)
1843int signo;
1844Sighandler_t handler;
1845{
1846 return signal(signo, handler);
1847}
1848
1849static int sig_trapped;
1850
1851static
1852Signal_t
1853sig_trap(signo)
1854int signo;
1855{
1856 sig_trapped++;
1857}
1858
1859Sighandler_t
1860rsignal_state(signo)
1861int signo;
1862{
1863 Sighandler_t oldsig;
1864
1865 sig_trapped = 0;
1866 oldsig = signal(signo, sig_trap);
1867 signal(signo, oldsig);
1868 if (sig_trapped)
1869 kill(getpid(), signo);
1870 return oldsig;
1871}
1872
1873int
1874rsignal_save(signo, handler, save)
1875int signo;
1876Sighandler_t handler;
1877Sigsave_t *save;
1878{
1879 *save = signal(signo, handler);
1880 return (*save == SIG_ERR) ? -1 : 0;
1881}
1882
1883int
36477c24 1884rsignal_restore(signo, save)
ff68c719
PP
1885int signo;
1886Sigsave_t *save;
1887{
1888 return (signal(signo, *save) == SIG_ERR) ? -1 : 0;
1889}
1890
1891#endif /* !HAS_SIGACTION */
1892
5f05dabc
PP
1893 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
1894#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS)
79072805
LW
1895I32
1896my_pclose(ptr)
760ac839 1897PerlIO *ptr;
a687059c 1898{
ff68c719 1899 Sigsave_t hstat, istat, qstat;
a687059c 1900 int status;
a0d0e21e 1901 SV **svp;
20188a90 1902 int pid;
a687059c 1903
760ac839 1904 svp = av_fetch(fdpid,PerlIO_fileno(ptr),TRUE);
748a9306 1905 pid = (int)SvIVX(*svp);
a0d0e21e
LW
1906 SvREFCNT_dec(*svp);
1907 *svp = &sv_undef;
ddcf38b7
IZ
1908#ifdef OS2
1909 if (pid == -1) { /* Opened by popen. */
1910 return my_syspclose(ptr);
1911 }
1912#endif
760ac839 1913 PerlIO_close(ptr);
7c0587c8
LW
1914#ifdef UTS
1915 if(kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
1916#endif
ff68c719
PP
1917 rsignal_save(SIGHUP, SIG_IGN, &hstat);
1918 rsignal_save(SIGINT, SIG_IGN, &istat);
1919 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306
LW
1920 do {
1921 pid = wait4pid(pid, &status, 0);
1922 } while (pid == -1 && errno == EINTR);
ff68c719
PP
1923 rsignal_restore(SIGHUP, &hstat);
1924 rsignal_restore(SIGINT, &istat);
1925 rsignal_restore(SIGQUIT, &qstat);
20188a90
LW
1926 return(pid < 0 ? pid : status);
1927}
4633a7c4
LW
1928#endif /* !DOSISH */
1929
1930#if !defined(DOSISH) || defined(OS2)
79072805 1931I32
20188a90
LW
1932wait4pid(pid,statusp,flags)
1933int pid;
1934int *statusp;
1935int flags;
1936{
79072805
LW
1937 SV *sv;
1938 SV** svp;
20188a90
LW
1939 char spid[16];
1940
1941 if (!pid)
1942 return -1;
20188a90
LW
1943 if (pid > 0) {
1944 sprintf(spid, "%d", pid);
79072805
LW
1945 svp = hv_fetch(pidstatus,spid,strlen(spid),FALSE);
1946 if (svp && *svp != &sv_undef) {
463ee0b2 1947 *statusp = SvIVX(*svp);
748a9306 1948 (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
1949 return pid;
1950 }
1951 }
1952 else {
79072805 1953 HE *entry;
20188a90 1954
79072805
LW
1955 hv_iterinit(pidstatus);
1956 if (entry = hv_iternext(pidstatus)) {
a0d0e21e 1957 pid = atoi(hv_iterkey(entry,(I32*)statusp));
79072805 1958 sv = hv_iterval(pidstatus,entry);
463ee0b2 1959 *statusp = SvIVX(sv);
20188a90 1960 sprintf(spid, "%d", pid);
748a9306 1961 (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
1962 return pid;
1963 }
1964 }
79072805
LW
1965#ifdef HAS_WAITPID
1966 return waitpid(pid,statusp,flags);
1967#else
a0d0e21e
LW
1968#ifdef HAS_WAIT4
1969 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
1970#else
1971 {
1972 I32 result;
1973 if (flags)
1974 croak("Can't do waitpid with flags");
1975 else {
1976 while ((result = wait(statusp)) != pid && pid > 0 && result >= 0)
1977 pidgone(result,*statusp);
1978 if (result < 0)
1979 *statusp = -1;
1980 }
1981 return result;
a687059c
LW
1982 }
1983#endif
20188a90 1984#endif
a687059c 1985}
7c0587c8 1986#endif /* !DOSISH */
a687059c 1987
7c0587c8 1988void
de3bb511 1989/*SUPPRESS 590*/
a687059c
LW
1990pidgone(pid,status)
1991int pid;
1992int status;
1993{
79072805 1994 register SV *sv;
20188a90 1995 char spid[16];
a687059c 1996
20188a90 1997 sprintf(spid, "%d", pid);
79072805 1998 sv = *hv_fetch(pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 1999 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2000 SvIVX(sv) = status;
20188a90 2001 return;
a687059c
LW
2002}
2003
55497cff 2004#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2005int pclose();
ddcf38b7
IZ
2006#ifdef HAS_FORK
2007int /* Cannot prototype with I32
2008 in os2ish.h. */
2009my_syspclose(ptr)
2010#else
79072805
LW
2011I32
2012my_pclose(ptr)
ddcf38b7 2013#endif
760ac839 2014PerlIO *ptr;
a687059c 2015{
760ac839
LW
2016 /* Needs work for PerlIO ! */
2017 FILE *f = PerlIO_findFILE(ptr);
2018 I32 result = pclose(f);
2019 PerlIO_releaseFILE(ptr,f);
2020 return result;
a687059c 2021}
7c0587c8 2022#endif
9f68db38
LW
2023
2024void
2025repeatcpy(to,from,len,count)
2026register char *to;
2027register char *from;
79072805
LW
2028I32 len;
2029register I32 count;
9f68db38 2030{
79072805 2031 register I32 todo;
9f68db38
LW
2032 register char *frombase = from;
2033
2034 if (len == 1) {
2035 todo = *from;
2036 while (count-- > 0)
2037 *to++ = todo;
2038 return;
2039 }
2040 while (count-- > 0) {
2041 for (todo = len; todo > 0; todo--) {
2042 *to++ = *from++;
2043 }
2044 from = frombase;
2045 }
2046}
0f85fab0
LW
2047
2048#ifndef CASTNEGFLOAT
463ee0b2 2049U32
79072805 2050cast_ulong(f)
0f85fab0
LW
2051double f;
2052{
2053 long along;
2054
27e2fb84 2055#if CASTFLAGS & 2
34de22dd
LW
2056# define BIGDOUBLE 2147483648.0
2057 if (f >= BIGDOUBLE)
2058 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2059#endif
0f85fab0
LW
2060 if (f >= 0.0)
2061 return (unsigned long)f;
2062 along = (long)f;
2063 return (unsigned long)along;
2064}
ed6116ce
LW
2065# undef BIGDOUBLE
2066#endif
2067
2068#ifndef CASTI32
5d94fbed 2069
5d94fbed
AD
2070/* Unfortunately, on some systems the cast_uv() function doesn't
2071 work with the system-supplied definition of ULONG_MAX. The
2072 comparison (f >= ULONG_MAX) always comes out true. It must be a
2073 problem with the compiler constant folding.
2074
2075 In any case, this workaround should be fine on any two's complement
2076 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2077 ccflags.
2078 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2079*/
1eb770ff
PP
2080
2081/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2082 of LONG_(MIN/MAX).
2083 -- Kenneth Albanowski <kjahds@kjahds.com>
2084*/
2085
20cec16a
PP
2086#ifndef MY_UV_MAX
2087# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD
2088#endif
2089
ed6116ce
LW
2090I32
2091cast_i32(f)
2092double f;
2093{
20cec16a
PP
2094 if (f >= I32_MAX)
2095 return (I32) I32_MAX;
2096 if (f <= I32_MIN)
2097 return (I32) I32_MIN;
ed6116ce
LW
2098 return (I32) f;
2099}
a0d0e21e
LW
2100
2101IV
2102cast_iv(f)
2103double f;
2104{
20cec16a
PP
2105 if (f >= IV_MAX)
2106 return (IV) IV_MAX;
2107 if (f <= IV_MIN)
2108 return (IV) IV_MIN;
a0d0e21e
LW
2109 return (IV) f;
2110}
5d94fbed
AD
2111
2112UV
2113cast_uv(f)
2114double f;
2115{
20cec16a
PP
2116 if (f >= MY_UV_MAX)
2117 return (UV) MY_UV_MAX;
5d94fbed
AD
2118 return (UV) f;
2119}
2120
0f85fab0 2121#endif
62b28dd9 2122
fe14fcc3 2123#ifndef HAS_RENAME
79072805 2124I32
62b28dd9
LW
2125same_dirent(a,b)
2126char *a;
2127char *b;
2128{
93a17b20
LW
2129 char *fa = strrchr(a,'/');
2130 char *fb = strrchr(b,'/');
62b28dd9
LW
2131 struct stat tmpstatbuf1;
2132 struct stat tmpstatbuf2;
2133#ifndef MAXPATHLEN
2134#define MAXPATHLEN 1024
2135#endif
2136 char tmpbuf[MAXPATHLEN+1];
2137
2138 if (fa)
2139 fa++;
2140 else
2141 fa = a;
2142 if (fb)
2143 fb++;
2144 else
2145 fb = b;
2146 if (strNE(a,b))
2147 return FALSE;
2148 if (fa == a)
6eb13c3b 2149 strcpy(tmpbuf,".");
62b28dd9
LW
2150 else
2151 strncpy(tmpbuf, a, fa - a);
a0d0e21e 2152 if (Stat(tmpbuf, &tmpstatbuf1) < 0)
62b28dd9
LW
2153 return FALSE;
2154 if (fb == b)
6eb13c3b 2155 strcpy(tmpbuf,".");
62b28dd9
LW
2156 else
2157 strncpy(tmpbuf, b, fb - b);
a0d0e21e 2158 if (Stat(tmpbuf, &tmpstatbuf2) < 0)
62b28dd9
LW
2159 return FALSE;
2160 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2161 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2162}
fe14fcc3
LW
2163#endif /* !HAS_RENAME */
2164
55497cff 2165UV
79072805 2166scan_oct(start, len, retlen)
fe14fcc3 2167char *start;
79072805
LW
2168I32 len;
2169I32 *retlen;
fe14fcc3
LW
2170{
2171 register char *s = start;
55497cff
PP
2172 register UV retval = 0;
2173 bool overflowed = FALSE;
fe14fcc3 2174
748a9306 2175 while (len && *s >= '0' && *s <= '7') {
55497cff
PP
2176 register UV n = retval << 3;
2177 if (!overflowed && (n >> 3) != retval) {
2178 warn("Integer overflow in octal number");
2179 overflowed = TRUE;
2180 }
2181 retval = n | (*s++ - '0');
748a9306 2182 len--;
fe14fcc3 2183 }
748a9306
LW
2184 if (dowarn && len && (*s == '8' || *s == '9'))
2185 warn("Illegal octal digit ignored");
fe14fcc3
LW
2186 *retlen = s - start;
2187 return retval;
2188}
2189
71be2cbc 2190UV
79072805 2191scan_hex(start, len, retlen)
fe14fcc3 2192char *start;
79072805
LW
2193I32 len;
2194I32 *retlen;
fe14fcc3
LW
2195{
2196 register char *s = start;
55497cff
PP
2197 register UV retval = 0;
2198 bool overflowed = FALSE;
fe14fcc3
LW
2199 char *tmp;
2200
93a17b20 2201 while (len-- && *s && (tmp = strchr(hexdigit, *s))) {
55497cff
PP
2202 register UV n = retval << 4;
2203 if (!overflowed && (n >> 4) != retval) {
2204 warn("Integer overflow in hex number");
2205 overflowed = TRUE;
2206 }
2207 retval = n | (tmp - hexdigit) & 15;
fe14fcc3
LW
2208 s++;
2209 }
2210 *retlen = s - start;
2211 return retval;
2212}
760ac839
LW
2213
2214
2215#ifdef HUGE_VAL
2216/*
2217 * This hack is to force load of "huge" support from libm.a
2218 * So it is in perl for (say) POSIX to use.
2219 * Needed for SunOS with Sun's 'acc' for example.
2220 */
2221double
2222Perl_huge()
2223{
2224 return HUGE_VAL;
2225}
2226#endif