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Separate avhv_foo() key handling into avhv_keys(). Slightly tweaked
[perl5.git] / util.c
CommitLineData
a0d0e21e 1/* util.c
a687059c 2 *
9607fc9c 3 * Copyright (c) 1991-1997, Larry Wall
a687059c 4 *
d48672a2
LW
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
8d063cd8 7 *
8d063cd8 8 */
a0d0e21e
LW
9
10/*
11 * "Very useful, no doubt, that was to Saruman; yet it seems that he was
12 * not content." --Gandalf
13 */
8d063cd8 14
8d063cd8 15#include "EXTERN.h"
8d063cd8 16#include "perl.h"
62b28dd9 17
6eb13c3b 18#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
a687059c 19#include <signal.h>
62b28dd9 20#endif
a687059c 21
36477c24
PP
22#ifndef SIG_ERR
23# define SIG_ERR ((Sighandler_t) -1)
24#endif
25
bd4080b3 26/* XXX If this causes problems, set i_unistd=undef in the hint file. */
85e6fe83 27#ifdef I_UNISTD
8990e307
LW
28# include <unistd.h>
29#endif
30
a687059c
LW
31#ifdef I_VFORK
32# include <vfork.h>
33#endif
34
94b6baf5
AD
35/* Put this after #includes because fork and vfork prototypes may
36 conflict.
37*/
38#ifndef HAS_VFORK
39# define vfork fork
40#endif
41
fe14fcc3
LW
42#ifdef I_FCNTL
43# include <fcntl.h>
44#endif
45#ifdef I_SYS_FILE
46# include <sys/file.h>
47#endif
48
ff68c719
PP
49#ifdef I_SYS_WAIT
50# include <sys/wait.h>
51#endif
52
8d063cd8 53#define FLUSH
8d063cd8 54
a0d0e21e
LW
55#ifdef LEAKTEST
56static void xstat _((void));
57#endif
58
a863c7d1
MB
59#ifdef USE_THREADS
60static U32 threadnum = 0;
61#endif /* USE_THREADS */
62
55497cff 63#ifndef MYMALLOC
de3bb511 64
8d063cd8
LW
65/* paranoid version of malloc */
66
a687059c
LW
67/* NOTE: Do not call the next three routines directly. Use the macros
68 * in handy.h, so that we can easily redefine everything to do tracking of
69 * allocated hunks back to the original New to track down any memory leaks.
20cec16a 70 * XXX This advice seems to be widely ignored :-( --AD August 1996.
a687059c
LW
71 */
72
bd4080b3 73Malloc_t
f0f333f4 74safemalloc(MEM_SIZE size)
8d063cd8 75{
bd4080b3 76 Malloc_t ptr;
55497cff 77#ifdef HAS_64K_LIMIT
62b28dd9 78 if (size > 0xffff) {
760ac839 79 PerlIO_printf(PerlIO_stderr(), "Allocation too large: %lx\n", size) FLUSH;
79072805 80 my_exit(1);
62b28dd9 81 }
55497cff 82#endif /* HAS_64K_LIMIT */
34de22dd
LW
83#ifdef DEBUGGING
84 if ((long)size < 0)
463ee0b2 85 croak("panic: malloc");
34de22dd 86#endif
8d063cd8 87 ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */
79072805 88#if !(defined(I286) || defined(atarist))
760ac839 89 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) malloc %ld bytes\n",ptr,an++,(long)size));
79072805 90#else
760ac839 91 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) malloc %ld bytes\n",ptr,an++,(long)size));
8d063cd8
LW
92#endif
93 if (ptr != Nullch)
94 return ptr;
7c0587c8
LW
95 else if (nomemok)
96 return Nullch;
8d063cd8 97 else {
760ac839 98 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
79072805 99 my_exit(1);
4e35701f 100 return Nullch;
8d063cd8
LW
101 }
102 /*NOTREACHED*/
103}
104
105/* paranoid version of realloc */
106
bd4080b3 107Malloc_t
f0f333f4 108saferealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 109{
bd4080b3 110 Malloc_t ptr;
ecfc5424 111#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
bd4080b3 112 Malloc_t realloc();
ecfc5424 113#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 114
55497cff 115#ifdef HAS_64K_LIMIT
5f05dabc
PP
116 if (size > 0xffff) {
117 PerlIO_printf(PerlIO_stderr(),
118 "Reallocation too large: %lx\n", size) FLUSH;
119 my_exit(1);
120 }
55497cff 121#endif /* HAS_64K_LIMIT */
378cc40b 122 if (!where)
463ee0b2 123 croak("Null realloc");
34de22dd
LW
124#ifdef DEBUGGING
125 if ((long)size < 0)
463ee0b2 126 croak("panic: realloc");
34de22dd 127#endif
8d063cd8 128 ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */
79072805
LW
129
130#if !(defined(I286) || defined(atarist))
131 DEBUG_m( {
760ac839
LW
132 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) rfree\n",where,an++);
133 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) realloc %ld bytes\n",ptr,an++,(long)size);
79072805
LW
134 } )
135#else
136 DEBUG_m( {
760ac839
LW
137 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) rfree\n",where,an++);
138 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) realloc %ld bytes\n",ptr,an++,(long)size);
79072805 139 } )
8d063cd8 140#endif
79072805 141
8d063cd8
LW
142 if (ptr != Nullch)
143 return ptr;
7c0587c8
LW
144 else if (nomemok)
145 return Nullch;
8d063cd8 146 else {
760ac839 147 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
79072805 148 my_exit(1);
4e35701f 149 return Nullch;
8d063cd8
LW
150 }
151 /*NOTREACHED*/
152}
153
154/* safe version of free */
155
54310121 156Free_t
f0f333f4 157safefree(Malloc_t where)
8d063cd8 158{
79072805 159#if !(defined(I286) || defined(atarist))
f0f333f4 160 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%x: (%05d) free\n",(char *) where,an++));
79072805 161#else
f0f333f4 162 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) free\n",(char *) where,an++));
8d063cd8 163#endif
378cc40b 164 if (where) {
de3bb511 165 /*SUPPRESS 701*/
378cc40b
LW
166 free(where);
167 }
8d063cd8
LW
168}
169
1050c9ca
PP
170/* safe version of calloc */
171
bd4080b3 172Malloc_t
f0f333f4 173safecalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 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))
fb73857a 191 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
1050c9ca 192#else
fb73857a 193 DEBUG_m(PerlIO_printf(Perl_debug_log, "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 203 my_exit(1);
4e35701f 204 return Nullch;
1050c9ca
PP
205 }
206 /*NOTREACHED*/
207}
208
55497cff 209#endif /* !MYMALLOC */
de3bb511 210
a687059c
LW
211#ifdef LEAKTEST
212
213#define ALIGN sizeof(long)
8d063cd8 214
bd4080b3 215Malloc_t
f0f333f4 216safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 217{
bd4080b3 218 register Malloc_t where;
8d063cd8 219
a687059c
LW
220 where = safemalloc(size + ALIGN);
221 xcount[x]++;
222 where[0] = x % 100;
223 where[1] = x / 100;
224 return where + ALIGN;
8d063cd8 225}
8d063cd8 226
bd4080b3 227Malloc_t
f0f333f4 228safexrealloc(Malloc_t where, MEM_SIZE size)
a687059c 229{
bd4080b3 230 register Malloc_t new = saferealloc(where - ALIGN, size + ALIGN);
a0d0e21e 231 return new + ALIGN;
a687059c
LW
232}
233
234void
f0f333f4 235safexfree(Malloc_t where)
a687059c 236{
79072805 237 I32 x;
a687059c
LW
238
239 if (!where)
240 return;
241 where -= ALIGN;
242 x = where[0] + 100 * where[1];
243 xcount[x]--;
244 safefree(where);
245}
246
bd4080b3 247Malloc_t
f0f333f4 248safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 249{
bd4080b3 250 register Malloc_t where;
1050c9ca
PP
251
252 where = safexmalloc(x, size * count + ALIGN);
253 xcount[x]++;
254 memset((void*)where + ALIGN, 0, size * count);
255 where[0] = x % 100;
256 where[1] = x / 100;
257 return where + ALIGN;
258}
259
7c0587c8 260static void
f0f333f4 261xstat(void)
8d063cd8 262{
79072805 263 register I32 i;
8d063cd8 264
a687059c 265 for (i = 0; i < MAXXCOUNT; i++) {
de3bb511 266 if (xcount[i] > lastxcount[i]) {
760ac839 267 PerlIO_printf(PerlIO_stderr(),"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]);
a687059c 268 lastxcount[i] = xcount[i];
8d063cd8
LW
269 }
270 }
8d063cd8 271}
a687059c
LW
272
273#endif /* LEAKTEST */
8d063cd8
LW
274
275/* copy a string up to some (non-backslashed) delimiter, if any */
276
277char *
8ac85365 278delimcpy(register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 279{
fc36a67e
PP
280 register I32 tolen;
281 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW
282 if (*from == '\\') {
283 if (from[1] == delim)
284 from++;
fc36a67e
PP
285 else {
286 if (to < toend)
287 *to++ = *from;
288 tolen++;
289 from++;
290 }
378cc40b 291 }
bedebaa5 292 else if (*from == delim)
8d063cd8 293 break;
fc36a67e
PP
294 if (to < toend)
295 *to++ = *from;
8d063cd8 296 }
bedebaa5
CS
297 if (to < toend)
298 *to = '\0';
fc36a67e 299 *retlen = tolen;
8d063cd8
LW
300 return from;
301}
302
303/* return ptr to little string in big string, NULL if not found */
378cc40b 304/* This routine was donated by Corey Satten. */
8d063cd8
LW
305
306char *
8ac85365 307instr(register char *big, register char *little)
378cc40b
LW
308{
309 register char *s, *x;
79072805 310 register I32 first;
378cc40b 311
a687059c
LW
312 if (!little)
313 return big;
314 first = *little++;
378cc40b
LW
315 if (!first)
316 return big;
317 while (*big) {
318 if (*big++ != first)
319 continue;
320 for (x=big,s=little; *s; /**/ ) {
321 if (!*x)
322 return Nullch;
323 if (*s++ != *x++) {
324 s--;
325 break;
326 }
327 }
328 if (!*s)
329 return big-1;
330 }
331 return Nullch;
332}
8d063cd8 333
a687059c
LW
334/* same as instr but allow embedded nulls */
335
336char *
8ac85365 337ninstr(register char *big, register char *bigend, char *little, char *lend)
8d063cd8 338{
a687059c 339 register char *s, *x;
79072805 340 register I32 first = *little;
a687059c 341 register char *littleend = lend;
378cc40b 342
a0d0e21e 343 if (!first && little >= littleend)
a687059c 344 return big;
de3bb511
LW
345 if (bigend - big < littleend - little)
346 return Nullch;
a687059c
LW
347 bigend -= littleend - little++;
348 while (big <= bigend) {
349 if (*big++ != first)
350 continue;
351 for (x=big,s=little; s < littleend; /**/ ) {
352 if (*s++ != *x++) {
353 s--;
354 break;
355 }
356 }
357 if (s >= littleend)
358 return big-1;
378cc40b 359 }
a687059c
LW
360 return Nullch;
361}
362
363/* reverse of the above--find last substring */
364
365char *
8ac85365 366rninstr(register char *big, char *bigend, char *little, char *lend)
a687059c
LW
367{
368 register char *bigbeg;
369 register char *s, *x;
79072805 370 register I32 first = *little;
a687059c
LW
371 register char *littleend = lend;
372
a0d0e21e 373 if (!first && little >= littleend)
a687059c
LW
374 return bigend;
375 bigbeg = big;
376 big = bigend - (littleend - little++);
377 while (big >= bigbeg) {
378 if (*big-- != first)
379 continue;
380 for (x=big+2,s=little; s < littleend; /**/ ) {
381 if (*s++ != *x++) {
382 s--;
383 break;
384 }
385 }
386 if (s >= littleend)
387 return big+1;
378cc40b 388 }
a687059c 389 return Nullch;
378cc40b 390}
a687059c 391
bbce6d69
PP
392/*
393 * Set up for a new ctype locale.
394 */
55497cff 395void
8ac85365 396perl_new_ctype(char *newctype)
ef7eada9 397{
36477c24
PP
398#ifdef USE_LOCALE_CTYPE
399
bbce6d69 400 int i;
ef7eada9 401
bbce6d69
PP
402 for (i = 0; i < 256; i++) {
403 if (isUPPER_LC(i))
404 fold_locale[i] = toLOWER_LC(i);
405 else if (isLOWER_LC(i))
406 fold_locale[i] = toUPPER_LC(i);
407 else
408 fold_locale[i] = i;
409 }
bbce6d69 410
36477c24
PP
411#endif /* USE_LOCALE_CTYPE */
412}
bbce6d69
PP
413
414/*
415 * Set up for a new collation locale.
416 */
417void
8ac85365 418perl_new_collate(char *newcoll)
bbce6d69 419{
36477c24
PP
420#ifdef USE_LOCALE_COLLATE
421
bbce6d69
PP
422 if (! newcoll) {
423 if (collation_name) {
424 ++collation_ix;
425 Safefree(collation_name);
426 collation_name = NULL;
427 collation_standard = TRUE;
bbce6d69
PP
428 collxfrm_base = 0;
429 collxfrm_mult = 2;
bbce6d69
PP
430 }
431 return;
432 }
433
434 if (! collation_name || strNE(collation_name, newcoll)) {
435 ++collation_ix;
436 Safefree(collation_name);
437 collation_name = savepv(newcoll);
ff68c719 438 collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 439
bbce6d69
PP
440 {
441 /* 2: at most so many chars ('a', 'b'). */
442 /* 50: surely no system expands a char more. */
443#define XFRMBUFSIZE (2 * 50)
444 char xbuf[XFRMBUFSIZE];
445 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
446 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
447 SSize_t mult = fb - fa;
448 if (mult < 1)
449 croak("strxfrm() gets absurd");
450 collxfrm_base = (fa > mult) ? (fa - mult) : 0;
451 collxfrm_mult = mult;
452 }
bbce6d69 453 }
bbce6d69 454
36477c24
PP
455#endif /* USE_LOCALE_COLLATE */
456}
bbce6d69
PP
457
458/*
459 * Set up for a new numeric locale.
460 */
461void
8ac85365 462perl_new_numeric(char *newnum)
bbce6d69 463{
36477c24
PP
464#ifdef USE_LOCALE_NUMERIC
465
bbce6d69
PP
466 if (! newnum) {
467 if (numeric_name) {
468 Safefree(numeric_name);
469 numeric_name = NULL;
470 numeric_standard = TRUE;
471 numeric_local = TRUE;
472 }
473 return;
474 }
475
476 if (! numeric_name || strNE(numeric_name, newnum)) {
477 Safefree(numeric_name);
478 numeric_name = savepv(newnum);
ff68c719 479 numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
bbce6d69
PP
480 numeric_local = TRUE;
481 }
36477c24
PP
482
483#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
484}
485
486void
8ac85365 487perl_set_numeric_standard(void)
bbce6d69 488{
5f05dabc
PP
489#ifdef USE_LOCALE_NUMERIC
490
bbce6d69
PP
491 if (! numeric_standard) {
492 setlocale(LC_NUMERIC, "C");
493 numeric_standard = TRUE;
494 numeric_local = FALSE;
495 }
5f05dabc
PP
496
497#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
498}
499
500void
8ac85365 501perl_set_numeric_local(void)
bbce6d69 502{
5f05dabc
PP
503#ifdef USE_LOCALE_NUMERIC
504
bbce6d69
PP
505 if (! numeric_local) {
506 setlocale(LC_NUMERIC, numeric_name);
507 numeric_standard = FALSE;
508 numeric_local = TRUE;
509 }
bbce6d69 510
36477c24 511#endif /* USE_LOCALE_NUMERIC */
5f05dabc 512}
36477c24 513
bbce6d69 514
36477c24
PP
515/*
516 * Initialize locale awareness.
517 */
f0c5b223 518int
8ac85365 519perl_init_i18nl10n(int printwarn)
f0c5b223
TB
520{
521 int ok = 1;
522 /* returns
523 * 1 = set ok or not applicable,
524 * 0 = fallback to C locale,
525 * -1 = fallback to C locale failed
526 */
bbce6d69 527
36477c24 528#ifdef USE_LOCALE
bbce6d69 529
36477c24 530#ifdef USE_LOCALE_CTYPE
bbce6d69 531 char *curctype = NULL;
36477c24
PP
532#endif /* USE_LOCALE_CTYPE */
533#ifdef USE_LOCALE_COLLATE
bbce6d69 534 char *curcoll = NULL;
36477c24
PP
535#endif /* USE_LOCALE_COLLATE */
536#ifdef USE_LOCALE_NUMERIC
bbce6d69 537 char *curnum = NULL;
36477c24 538#endif /* USE_LOCALE_NUMERIC */
02b32252 539 char *lc_all = getenv("LC_ALL");
5f05dabc 540 char *lang = getenv("LANG");
bbce6d69 541 bool setlocale_failure = FALSE;
f0c5b223 542
02b32252
CS
543#ifdef LOCALE_ENVIRON_REQUIRED
544
545 /*
546 * Ultrix setlocale(..., "") fails if there are no environment
547 * variables from which to get a locale name.
548 */
549
550 bool done = FALSE;
551
552#ifdef LC_ALL
553 if (lang) {
554 if (setlocale(LC_ALL, ""))
555 done = TRUE;
556 else
557 setlocale_failure = TRUE;
558 }
559 if (!setlocale_failure)
560#endif /* LC_ALL */
561 {
562#ifdef USE_LOCALE_CTYPE
563 if (! (curctype = setlocale(LC_CTYPE,
564 (!done && (lang || getenv("LC_CTYPE")))
565 ? "" : Nullch)))
566 setlocale_failure = TRUE;
567#endif /* USE_LOCALE_CTYPE */
568#ifdef USE_LOCALE_COLLATE
569 if (! (curcoll = setlocale(LC_COLLATE,
570 (!done && (lang || getenv("LC_COLLATE")))
571 ? "" : Nullch)))
572 setlocale_failure = TRUE;
573#endif /* USE_LOCALE_COLLATE */
574#ifdef USE_LOCALE_NUMERIC
575 if (! (curnum = setlocale(LC_NUMERIC,
576 (!done && (lang || getenv("LC_NUMERIC")))
577 ? "" : Nullch)))
578 setlocale_failure = TRUE;
579#endif /* USE_LOCALE_NUMERIC */
580 }
581
582#else /* !LOCALE_ENVIRON_REQUIRED */
583
bbce6d69 584#ifdef LC_ALL
5f05dabc 585
bbce6d69
PP
586 if (! setlocale(LC_ALL, ""))
587 setlocale_failure = TRUE;
5f05dabc
PP
588 else {
589#ifdef USE_LOCALE_CTYPE
590 curctype = setlocale(LC_CTYPE, Nullch);
591#endif /* USE_LOCALE_CTYPE */
592#ifdef USE_LOCALE_COLLATE
593 curcoll = setlocale(LC_COLLATE, Nullch);
594#endif /* USE_LOCALE_COLLATE */
595#ifdef USE_LOCALE_NUMERIC
596 curnum = setlocale(LC_NUMERIC, Nullch);
597#endif /* USE_LOCALE_NUMERIC */
598 }
599
600#else /* !LC_ALL */
bbce6d69 601
36477c24 602#ifdef USE_LOCALE_CTYPE
5f05dabc 603 if (! (curctype = setlocale(LC_CTYPE, "")))
bbce6d69 604 setlocale_failure = TRUE;
36477c24
PP
605#endif /* USE_LOCALE_CTYPE */
606#ifdef USE_LOCALE_COLLATE
5f05dabc 607 if (! (curcoll = setlocale(LC_COLLATE, "")))
bbce6d69 608 setlocale_failure = TRUE;
36477c24
PP
609#endif /* USE_LOCALE_COLLATE */
610#ifdef USE_LOCALE_NUMERIC
5f05dabc 611 if (! (curnum = setlocale(LC_NUMERIC, "")))
bbce6d69 612 setlocale_failure = TRUE;
36477c24 613#endif /* USE_LOCALE_NUMERIC */
bbce6d69 614
5f05dabc
PP
615#endif /* LC_ALL */
616
02b32252
CS
617#endif /* !LOCALE_ENVIRON_REQUIRED */
618
5f05dabc
PP
619 if (setlocale_failure) {
620 char *p;
621 bool locwarn = (printwarn > 1 ||
622 printwarn &&
623 (!(p = getenv("PERL_BADLANG")) || atoi(p)));
20cec16a 624
5f05dabc
PP
625 if (locwarn) {
626#ifdef LC_ALL
627
628 PerlIO_printf(PerlIO_stderr(),
629 "perl: warning: Setting locale failed.\n");
630
631#else /* !LC_ALL */
632
ef7eada9 633 PerlIO_printf(PerlIO_stderr(),
bbce6d69 634 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 635#ifdef USE_LOCALE_CTYPE
bbce6d69 636 if (! curctype)
5f05dabc 637 PerlIO_printf(PerlIO_stderr(), "LC_CTYPE ");
36477c24
PP
638#endif /* USE_LOCALE_CTYPE */
639#ifdef USE_LOCALE_COLLATE
bbce6d69 640 if (! curcoll)
5f05dabc 641 PerlIO_printf(PerlIO_stderr(), "LC_COLLATE ");
36477c24
PP
642#endif /* USE_LOCALE_COLLATE */
643#ifdef USE_LOCALE_NUMERIC
bbce6d69 644 if (! curnum)
5f05dabc 645 PerlIO_printf(PerlIO_stderr(), "LC_NUMERIC ");
36477c24 646#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
647 PerlIO_printf(PerlIO_stderr(), "\n");
648
5f05dabc
PP
649#endif /* LC_ALL */
650
760ac839 651 PerlIO_printf(PerlIO_stderr(),
bbce6d69 652 "perl: warning: Please check that your locale settings:\n");
ef7eada9
JH
653
654 PerlIO_printf(PerlIO_stderr(),
bbce6d69
PP
655 "\tLC_ALL = %c%s%c,\n",
656 lc_all ? '"' : '(',
657 lc_all ? lc_all : "unset",
658 lc_all ? '"' : ')');
5f05dabc
PP
659
660 {
661 char **e;
662 for (e = environ; *e; e++) {
663 if (strnEQ(*e, "LC_", 3)
664 && strnNE(*e, "LC_ALL=", 7)
665 && (p = strchr(*e, '=')))
666 PerlIO_printf(PerlIO_stderr(), "\t%.*s = \"%s\",\n",
fb73857a 667 (int)(p - *e), *e, p + 1);
5f05dabc
PP
668 }
669 }
670
ef7eada9 671 PerlIO_printf(PerlIO_stderr(),
bbce6d69 672 "\tLANG = %c%s%c\n",
5f05dabc 673 lang ? '"' : '(',
bbce6d69
PP
674 lang ? lang : "unset",
675 lang ? '"' : ')');
ef7eada9 676
bbce6d69
PP
677 PerlIO_printf(PerlIO_stderr(),
678 " are supported and installed on your system.\n");
5f05dabc 679 }
ef7eada9 680
5f05dabc
PP
681#ifdef LC_ALL
682
683 if (setlocale(LC_ALL, "C")) {
684 if (locwarn)
685 PerlIO_printf(PerlIO_stderr(),
686 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 687 ok = 0;
ef7eada9 688 }
5f05dabc
PP
689 else {
690 if (locwarn)
691 PerlIO_printf(PerlIO_stderr(),
692 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
693 ok = -1;
694 }
bbce6d69 695
5f05dabc
PP
696#else /* ! LC_ALL */
697
698 if (0
36477c24 699#ifdef USE_LOCALE_CTYPE
5f05dabc 700 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24
PP
701#endif /* USE_LOCALE_CTYPE */
702#ifdef USE_LOCALE_COLLATE
5f05dabc 703 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24
PP
704#endif /* USE_LOCALE_COLLATE */
705#ifdef USE_LOCALE_NUMERIC
5f05dabc 706 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 707#endif /* USE_LOCALE_NUMERIC */
5f05dabc
PP
708 )
709 {
710 if (locwarn)
bbce6d69 711 PerlIO_printf(PerlIO_stderr(),
5f05dabc
PP
712 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
713 ok = -1;
bbce6d69 714 }
5f05dabc 715
bbce6d69 716#endif /* ! LC_ALL */
5f05dabc
PP
717
718#ifdef USE_LOCALE_CTYPE
719 curctype = setlocale(LC_CTYPE, Nullch);
720#endif /* USE_LOCALE_CTYPE */
721#ifdef USE_LOCALE_COLLATE
722 curcoll = setlocale(LC_COLLATE, Nullch);
723#endif /* USE_LOCALE_COLLATE */
724#ifdef USE_LOCALE_NUMERIC
725 curnum = setlocale(LC_NUMERIC, Nullch);
726#endif /* USE_LOCALE_NUMERIC */
ef7eada9
JH
727 }
728
36477c24 729#ifdef USE_LOCALE_CTYPE
bbce6d69 730 perl_new_ctype(curctype);
36477c24 731#endif /* USE_LOCALE_CTYPE */
bbce6d69 732
36477c24 733#ifdef USE_LOCALE_COLLATE
bbce6d69 734 perl_new_collate(curcoll);
36477c24 735#endif /* USE_LOCALE_COLLATE */
bbce6d69 736
36477c24 737#ifdef USE_LOCALE_NUMERIC
bbce6d69 738 perl_new_numeric(curnum);
36477c24 739#endif /* USE_LOCALE_NUMERIC */
ef7eada9 740
36477c24 741#endif /* USE_LOCALE */
ef7eada9 742
f0c5b223
TB
743 return ok;
744}
745
bbce6d69
PP
746/* Backwards compatibility. */
747int
8ac85365 748perl_init_i18nl14n(int printwarn)
bbce6d69 749{
5f05dabc 750 return perl_init_i18nl10n(printwarn);
bbce6d69 751}
ef7eada9 752
36477c24 753#ifdef USE_LOCALE_COLLATE
ef7eada9 754
bbce6d69
PP
755/*
756 * mem_collxfrm() is a bit like strxfrm() but with two important
757 * differences. First, it handles embedded NULs. Second, it allocates
758 * a bit more memory than needed for the transformed data itself.
759 * The real transformed data begins at offset sizeof(collationix).
760 * Please see sv_collxfrm() to see how this is used.
761 */
762char *
8ac85365 763mem_collxfrm(const char *s, STRLEN len, STRLEN *xlen)
bbce6d69
PP
764{
765 char *xbuf;
766 STRLEN xalloc, xin, xout;
767
768 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
769 /* the +1 is for the terminating NUL. */
770
771 xalloc = sizeof(collation_ix) + collxfrm_base + (collxfrm_mult * len) + 1;
772 New(171, xbuf, xalloc, char);
773 if (! xbuf)
774 goto bad;
775
776 *(U32*)xbuf = collation_ix;
777 xout = sizeof(collation_ix);
778 for (xin = 0; xin < len; ) {
779 SSize_t xused;
780
781 for (;;) {
782 xused = strxfrm(xbuf + xout, s + xin, xalloc - xout);
783 if (xused == -1)
784 goto bad;
785 if (xused < xalloc - xout)
786 break;
787 xalloc = (2 * xalloc) + 1;
788 Renew(xbuf, xalloc, char);
789 if (! xbuf)
790 goto bad;
791 }
ef7eada9 792
bbce6d69
PP
793 xin += strlen(s + xin) + 1;
794 xout += xused;
795
796 /* Embedded NULs are understood but silently skipped
797 * because they make no sense in locale collation. */
798 }
ef7eada9 799
bbce6d69
PP
800 xbuf[xout] = '\0';
801 *xlen = xout - sizeof(collation_ix);
802 return xbuf;
803
804 bad:
805 Safefree(xbuf);
806 *xlen = 0;
807 return NULL;
ef7eada9
JH
808}
809
36477c24 810#endif /* USE_LOCALE_COLLATE */
bbce6d69 811
378cc40b 812void
8ac85365 813fbm_compile(SV *sv)
378cc40b 814{
a687059c
LW
815 register unsigned char *s;
816 register unsigned char *table;
79072805
LW
817 register U32 i;
818 register U32 len = SvCUR(sv);
819 I32 rarest = 0;
820 U32 frequency = 256;
821
748a9306
LW
822 if (len > 255)
823 return; /* can't have offsets that big */
79072805 824 Sv_Grow(sv,len+258);
463ee0b2 825 table = (unsigned char*)(SvPVX(sv) + len + 1);
a687059c
LW
826 s = table - 2;
827 for (i = 0; i < 256; i++) {
378cc40b
LW
828 table[i] = len;
829 }
830 i = 0;
463ee0b2 831 while (s >= (unsigned char*)(SvPVX(sv)))
a687059c 832 {
bbce6d69
PP
833 if (table[*s] == len)
834 table[*s] = i;
378cc40b
LW
835 s--,i++;
836 }
79072805 837 sv_upgrade(sv, SVt_PVBM);
bbce6d69 838 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 839 SvVALID_on(sv);
378cc40b 840
463ee0b2 841 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69
PP
842 for (i = 0; i < len; i++) {
843 if (freq[s[i]] < frequency) {
844 rarest = i;
845 frequency = freq[s[i]];
378cc40b
LW
846 }
847 }
79072805
LW
848 BmRARE(sv) = s[rarest];
849 BmPREVIOUS(sv) = rarest;
760ac839 850 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW
851}
852
378cc40b 853char *
8ac85365 854fbm_instr(unsigned char *big, register unsigned char *bigend, SV *littlestr)
378cc40b 855{
a687059c 856 register unsigned char *s;
79072805
LW
857 register I32 tmp;
858 register I32 littlelen;
a687059c
LW
859 register unsigned char *little;
860 register unsigned char *table;
861 register unsigned char *olds;
862 register unsigned char *oldlittle;
378cc40b 863
79072805 864 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
a0d0e21e
LW
865 STRLEN len;
866 char *l = SvPV(littlestr,len);
867 if (!len)
d48672a2 868 return (char*)big;
a0d0e21e 869 return ninstr((char*)big,(char*)bigend, l, l + len);
d48672a2 870 }
378cc40b 871
79072805
LW
872 littlelen = SvCUR(littlestr);
873 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
0f85fab0
LW
874 if (littlelen > bigend - big)
875 return Nullch;
463ee0b2 876 little = (unsigned char*)SvPVX(littlestr);
bbce6d69 877 s = bigend - littlelen;
36477c24 878 if (*s == *little && memEQ((char*)s,(char*)little,littlelen))
bbce6d69
PP
879 return (char*)s; /* how sweet it is */
880 else if (bigend[-1] == '\n' && little[littlelen-1] != '\n'
881 && s > big) {
882 s--;
36477c24 883 if (*s == *little && memEQ((char*)s,(char*)little,littlelen))
bbce6d69 884 return (char*)s;
a687059c 885 }
bbce6d69 886 return Nullch;
a687059c 887 }
463ee0b2 888 table = (unsigned char*)(SvPVX(littlestr) + littlelen + 1);
62b28dd9
LW
889 if (--littlelen >= bigend - big)
890 return Nullch;
891 s = big + littlelen;
a687059c 892 oldlittle = little = table - 2;
bbce6d69
PP
893 if (s < bigend) {
894 top2:
895 /*SUPPRESS 560*/
896 if (tmp = table[*s]) {
62b28dd9 897#ifdef POINTERRIGOR
bbce6d69
PP
898 if (bigend - s > tmp) {
899 s += tmp;
900 goto top2;
901 }
62b28dd9 902#else
bbce6d69
PP
903 if ((s += tmp) < bigend)
904 goto top2;
62b28dd9 905#endif
bbce6d69 906 return Nullch;
a687059c 907 }
bbce6d69
PP
908 else {
909 tmp = littlelen; /* less expensive than calling strncmp() */
910 olds = s;
911 while (tmp--) {
912 if (*--s == *--little)
913 continue;
914 s = olds + 1; /* here we pay the price for failure */
915 little = oldlittle;
916 if (s < bigend) /* fake up continue to outer loop */
62b28dd9 917 goto top2;
62b28dd9 918 return Nullch;
a687059c 919 }
bbce6d69 920 return (char *)s;
378cc40b
LW
921 }
922 }
923 return Nullch;
924}
925
926char *
8ac85365 927screaminstr(SV *bigstr, SV *littlestr)
378cc40b 928{
a687059c
LW
929 register unsigned char *s, *x;
930 register unsigned char *big;
79072805
LW
931 register I32 pos;
932 register I32 previous;
933 register I32 first;
a687059c
LW
934 register unsigned char *little;
935 register unsigned char *bigend;
936 register unsigned char *littleend;
378cc40b 937
79072805 938 if ((pos = screamfirst[BmRARE(littlestr)]) < 0)
378cc40b 939 return Nullch;
463ee0b2 940 little = (unsigned char *)(SvPVX(littlestr));
79072805 941 littleend = little + SvCUR(littlestr);
378cc40b 942 first = *little++;
79072805 943 previous = BmPREVIOUS(littlestr);
463ee0b2 944 big = (unsigned char *)(SvPVX(bigstr));
79072805 945 bigend = big + SvCUR(bigstr);
378cc40b
LW
946 while (pos < previous) {
947 if (!(pos += screamnext[pos]))
948 return Nullch;
949 }
de3bb511 950#ifdef POINTERRIGOR
bbce6d69
PP
951 do {
952 if (big[pos-previous] != first)
953 continue;
954 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
955 if (x >= bigend)
956 return Nullch;
957 if (*s++ != *x++) {
958 s--;
959 break;
de3bb511 960 }
bbce6d69
PP
961 }
962 if (s == littleend)
963 return (char *)(big+pos-previous);
964 } while ( pos += screamnext[pos] );
de3bb511
LW
965#else /* !POINTERRIGOR */
966 big -= previous;
bbce6d69
PP
967 do {
968 if (big[pos] != first)
969 continue;
970 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
971 if (x >= bigend)
972 return Nullch;
973 if (*s++ != *x++) {
974 s--;
975 break;
378cc40b 976 }
bbce6d69
PP
977 }
978 if (s == littleend)
979 return (char *)(big+pos);
980 } while ( pos += screamnext[pos] );
de3bb511 981#endif /* POINTERRIGOR */
8d063cd8
LW
982 return Nullch;
983}
984
79072805 985I32
8ac85365 986ibcmp(char *s1, char *s2, register I32 len)
79072805 987{
bbce6d69
PP
988 register U8 *a = (U8 *)s1;
989 register U8 *b = (U8 *)s2;
79072805 990 while (len--) {
bbce6d69
PP
991 if (*a != *b && *a != fold[*b])
992 return 1;
993 a++,b++;
994 }
995 return 0;
996}
997
998I32
8ac85365 999ibcmp_locale(char *s1, char *s2, register I32 len)
bbce6d69
PP
1000{
1001 register U8 *a = (U8 *)s1;
1002 register U8 *b = (U8 *)s2;
1003 while (len--) {
1004 if (*a != *b && *a != fold_locale[*b])
1005 return 1;
1006 a++,b++;
79072805
LW
1007 }
1008 return 0;
1009}
1010
8d063cd8
LW
1011/* copy a string to a safe spot */
1012
1013char *
8ac85365 1014savepv(char *sv)
8d063cd8 1015{
a687059c 1016 register char *newaddr;
8d063cd8 1017
79072805
LW
1018 New(902,newaddr,strlen(sv)+1,char);
1019 (void)strcpy(newaddr,sv);
8d063cd8
LW
1020 return newaddr;
1021}
1022
a687059c
LW
1023/* same thing but with a known length */
1024
1025char *
8ac85365 1026savepvn(char *sv, register I32 len)
a687059c
LW
1027{
1028 register char *newaddr;
1029
1030 New(903,newaddr,len+1,char);
79072805 1031 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW
1032 newaddr[len] = '\0'; /* is now */
1033 return newaddr;
1034}
1035
fc36a67e
PP
1036/* the SV for form() and mess() is not kept in an arena */
1037
1038static SV *
8ac85365 1039mess_alloc(void)
fc36a67e
PP
1040{
1041 SV *sv;
1042 XPVMG *any;
1043
1044 /* Create as PVMG now, to avoid any upgrading later */
1045 New(905, sv, 1, SV);
1046 Newz(905, any, 1, XPVMG);
1047 SvFLAGS(sv) = SVt_PVMG;
1048 SvANY(sv) = (void*)any;
1049 SvREFCNT(sv) = 1 << 30; /* practically infinite */
1050 return sv;
1051}
1052
a0d0e21e 1053#ifdef I_STDARG
8990e307 1054char *
46fc3d4c 1055form(const char* pat, ...)
a687059c
LW
1056#else
1057/*VARARGS0*/
de3bb511 1058char *
46fc3d4c 1059form(pat, va_alist)
71be2cbc 1060 const char *pat;
46fc3d4c 1061 va_dcl
8990e307
LW
1062#endif
1063{
46fc3d4c
PP
1064 va_list args;
1065#ifdef I_STDARG
1066 va_start(args, pat);
a687059c 1067#else
46fc3d4c 1068 va_start(args);
d48672a2 1069#endif
fc36a67e
PP
1070 if (!mess_sv)
1071 mess_sv = mess_alloc();
1072 sv_vsetpvfn(mess_sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
46fc3d4c 1073 va_end(args);
fc36a67e 1074 return SvPVX(mess_sv);
46fc3d4c 1075}
a687059c 1076
46fc3d4c 1077char *
8ac85365 1078mess(const char *pat, va_list *args)
46fc3d4c
PP
1079{
1080 SV *sv;
1081 static char dgd[] = " during global destruction.\n";
1082
46fc3d4c 1083 if (!mess_sv)
fc36a67e 1084 mess_sv = mess_alloc();
46fc3d4c 1085 sv = mess_sv;
fc36a67e 1086 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1087 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1088 dTHR;
2304df62 1089 if (dirty)
46fc3d4c 1090 sv_catpv(sv, dgd);
2304df62 1091 else {
46fc3d4c 1092 if (curcop->cop_line)
fc36a67e 1093 sv_catpvf(sv, " at %_ line %ld",
46fc3d4c 1094 GvSV(curcop->cop_filegv), (long)curcop->cop_line);
c07a80fd
PP
1095 if (GvIO(last_in_gv) && IoLINES(GvIOp(last_in_gv))) {
1096 bool line_mode = (RsSIMPLE(rs) &&
1097 SvLEN(rs) == 1 && *SvPVX(rs) == '\n');
46fc3d4c
PP
1098 sv_catpvf(sv, ", <%s> %s %ld",
1099 last_in_gv == argvgv ? "" : GvNAME(last_in_gv),
1100 line_mode ? "line" : "chunk",
1101 (long)IoLINES(GvIOp(last_in_gv)));
2304df62 1102 }
46fc3d4c 1103 sv_catpv(sv, ".\n");
a687059c 1104 }
a687059c 1105 }
46fc3d4c 1106 return SvPVX(sv);
a687059c
LW
1107}
1108
ecfc5424 1109#ifdef I_STDARG
36477c24 1110OP *
71be2cbc 1111die(const char* pat, ...)
36477c24
PP
1112#else
1113/*VARARGS0*/
1114OP *
1115die(pat, va_alist)
71be2cbc 1116 const char *pat;
36477c24
PP
1117 va_dcl
1118#endif
1119{
5dc0d613 1120 dTHR;
36477c24
PP
1121 va_list args;
1122 char *message;
36477c24
PP
1123 int was_in_eval = in_eval;
1124 HV *stash;
1125 GV *gv;
1126 CV *cv;
1127
57d3b86d 1128#ifdef USE_THREADS
199100c8
MB
1129 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
1130 "%p: die: curstack = %p, mainstack = %p\n",
1131 thr, curstack, mainstack));
57d3b86d 1132#endif /* USE_THREADS */
36477c24
PP
1133 /* We have to switch back to mainstack or die_where may try to pop
1134 * the eval block from the wrong stack if die is being called from a
1135 * signal handler. - dkindred@cs.cmu.edu */
1136 if (curstack != mainstack) {
1137 dSP;
1138 SWITCHSTACK(curstack, mainstack);
1139 }
1140
1141#ifdef I_STDARG
1142 va_start(args, pat);
1143#else
1144 va_start(args);
1145#endif
1146 message = mess(pat, &args);
1147 va_end(args);
1148
57d3b86d 1149#ifdef USE_THREADS
199100c8
MB
1150 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
1151 "%p: die: message = %s\ndiehook = %p\n",
1152 thr, message, diehook));
57d3b86d 1153#endif /* USE_THREADS */
1738f5c4
CS
1154 if (diehook) {
1155 /* sv_2cv might call croak() */
1156 SV *olddiehook = diehook;
1157 ENTER;
1158 SAVESPTR(diehook);
1159 diehook = Nullsv;
1160 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1161 LEAVE;
1162 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1163 dSP;
774d564b
PP
1164 SV *msg;
1165
1166 ENTER;
1167 msg = newSVpv(message, 0);
1168 SvREADONLY_on(msg);
1169 SAVEFREESV(msg);
1738f5c4
CS
1170
1171 PUSHMARK(sp);
1172 XPUSHs(msg);
1173 PUTBACK;
1174 perl_call_sv((SV*)cv, G_DISCARD);
1175
774d564b 1176 LEAVE;
1738f5c4 1177 }
36477c24
PP
1178 }
1179
1180 restartop = die_where(message);
57d3b86d 1181#ifdef USE_THREADS
d9f997d7 1182 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
7c06b590
GS
1183 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
1184 thr, restartop, was_in_eval, top_env));
57d3b86d 1185#endif /* USE_THREADS */
7c06b590 1186 if ((!restartop && was_in_eval) || top_env->je_prev)
54310121 1187 JMPENV_JUMP(3);
36477c24
PP
1188 return restartop;
1189}
1190
1191#ifdef I_STDARG
79072805 1192void
71be2cbc 1193croak(const char* pat, ...)
463ee0b2 1194#else
8990e307
LW
1195/*VARARGS0*/
1196void
1197croak(pat, va_alist)
1198 char *pat;
1199 va_dcl
463ee0b2 1200#endif
a687059c 1201{
11343788 1202 dTHR;
a687059c 1203 va_list args;
de3bb511 1204 char *message;
748a9306
LW
1205 HV *stash;
1206 GV *gv;
1207 CV *cv;
a687059c 1208
a0d0e21e 1209#ifdef I_STDARG
8990e307
LW
1210 va_start(args, pat);
1211#else
a687059c 1212 va_start(args);
8990e307 1213#endif
2304df62 1214 message = mess(pat, &args);
a687059c 1215 va_end(args);
11343788 1216#ifdef USE_THREADS
d9f997d7 1217 DEBUG_L(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
11343788 1218#endif /* USE_THREADS */
20cec16a 1219 if (diehook) {
1738f5c4 1220 /* sv_2cv might call croak() */
20cec16a 1221 SV *olddiehook = diehook;
1738f5c4
CS
1222 ENTER;
1223 SAVESPTR(diehook);
1224 diehook = Nullsv;
20cec16a 1225 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS
1226 LEAVE;
1227 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1228 dSP;
774d564b
PP
1229 SV *msg;
1230
1231 ENTER;
1232 msg = newSVpv(message, 0);
1233 SvREADONLY_on(msg);
1234 SAVEFREESV(msg);
20cec16a
PP
1235
1236 PUSHMARK(sp);
1738f5c4 1237 XPUSHs(msg);
20cec16a
PP
1238 PUTBACK;
1239 perl_call_sv((SV*)cv, G_DISCARD);
36477c24 1240
774d564b 1241 LEAVE;
20cec16a 1242 }
748a9306 1243 }
a0d0e21e
LW
1244 if (in_eval) {
1245 restartop = die_where(message);
54310121 1246 JMPENV_JUMP(3);
a0d0e21e 1247 }
760ac839
LW
1248 PerlIO_puts(PerlIO_stderr(),message);
1249 (void)PerlIO_flush(PerlIO_stderr());
f86702cc 1250 my_failure_exit();
a687059c
LW
1251}
1252
8990e307 1253void
ecfc5424 1254#ifdef I_STDARG
71be2cbc 1255warn(const char* pat,...)
463ee0b2 1256#else
8990e307
LW
1257/*VARARGS0*/
1258warn(pat,va_alist)
71be2cbc 1259 const char *pat;
8990e307 1260 va_dcl
463ee0b2 1261#endif
a687059c
LW
1262{
1263 va_list args;
de3bb511 1264 char *message;
748a9306
LW
1265 HV *stash;
1266 GV *gv;
1267 CV *cv;
a687059c 1268
a0d0e21e 1269#ifdef I_STDARG
8990e307
LW
1270 va_start(args, pat);
1271#else
a687059c 1272 va_start(args);
8990e307 1273#endif
2304df62 1274 message = mess(pat, &args);
a687059c
LW
1275 va_end(args);
1276
20cec16a 1277 if (warnhook) {
1738f5c4 1278 /* sv_2cv might call warn() */
11343788 1279 dTHR;
20cec16a 1280 SV *oldwarnhook = warnhook;
1738f5c4
CS
1281 ENTER;
1282 SAVESPTR(warnhook);
1283 warnhook = Nullsv;
20cec16a 1284 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS
1285 LEAVE;
1286 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1287 dSP;
774d564b
PP
1288 SV *msg;
1289
1290 ENTER;
1291 msg = newSVpv(message, 0);
1292 SvREADONLY_on(msg);
1293 SAVEFREESV(msg);
1294
20cec16a 1295 PUSHMARK(sp);
774d564b 1296 XPUSHs(msg);
20cec16a
PP
1297 PUTBACK;
1298 perl_call_sv((SV*)cv, G_DISCARD);
774d564b
PP
1299
1300 LEAVE;
20cec16a
PP
1301 return;
1302 }
748a9306 1303 }
20cec16a 1304 PerlIO_puts(PerlIO_stderr(),message);
a687059c 1305#ifdef LEAKTEST
20cec16a 1306 DEBUG_L(xstat());
a687059c 1307#endif
20cec16a 1308 (void)PerlIO_flush(PerlIO_stderr());
a687059c 1309}
8d063cd8 1310
a0d0e21e 1311#ifndef VMS /* VMS' my_setenv() is in VMS.c */
3e3baf6d 1312#ifndef WIN32
8d063cd8 1313void
8ac85365 1314my_setenv(char *nam, char *val)
8d063cd8 1315{
79072805 1316 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1317
fe14fcc3 1318 if (environ == origenviron) { /* need we copy environment? */
79072805
LW
1319 I32 j;
1320 I32 max;
fe14fcc3
LW
1321 char **tmpenv;
1322
de3bb511 1323 /*SUPPRESS 530*/
fe14fcc3
LW
1324 for (max = i; environ[max]; max++) ;
1325 New(901,tmpenv, max+2, char*);
1326 for (j=0; j<max; j++) /* copy environment */
a0d0e21e 1327 tmpenv[j] = savepv(environ[j]);
fe14fcc3
LW
1328 tmpenv[max] = Nullch;
1329 environ = tmpenv; /* tell exec where it is now */
1330 }
a687059c 1331 if (!val) {
e5ebf479 1332 Safefree(environ[i]);
a687059c
LW
1333 while (environ[i]) {
1334 environ[i] = environ[i+1];
1335 i++;
1336 }
1337 return;
1338 }
8d063cd8 1339 if (!environ[i]) { /* does not exist yet */
fe14fcc3 1340 Renew(environ, i+2, char*); /* just expand it a bit */
8d063cd8
LW
1341 environ[i+1] = Nullch; /* make sure it's null terminated */
1342 }
fe14fcc3
LW
1343 else
1344 Safefree(environ[i]);
a687059c 1345 New(904, environ[i], strlen(nam) + strlen(val) + 2, char);
62b28dd9 1346#ifndef MSDOS
a687059c 1347 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
62b28dd9
LW
1348#else
1349 /* MS-DOS requires environment variable names to be in uppercase */
fe14fcc3
LW
1350 /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but
1351 * some utilities and applications may break because they only look
1352 * for upper case strings. (Fixed strupr() bug here.)]
1353 */
1354 strcpy(environ[i],nam); strupr(environ[i]);
62b28dd9
LW
1355 (void)sprintf(environ[i] + strlen(nam),"=%s",val);
1356#endif /* MSDOS */
8d063cd8
LW
1357}
1358
3e3baf6d 1359#else /* if WIN32 */
68dc0745
PP
1360
1361void
4e35701f 1362my_setenv(char *nam,char *val)
68dc0745 1363{
3e3baf6d
TB
1364
1365#ifdef USE_WIN32_RTL_ENV
1366
68dc0745
PP
1367 register char *envstr;
1368 STRLEN namlen = strlen(nam);
3e3baf6d
TB
1369 STRLEN vallen;
1370 char *oldstr = environ[setenv_getix(nam)];
1371
1372 /* putenv() has totally broken semantics in both the Borland
1373 * and Microsoft CRTLs. They either store the passed pointer in
1374 * the environment without making a copy, or make a copy and don't
1375 * free it. And on top of that, they dont free() old entries that
1376 * are being replaced/deleted. This means the caller must
1377 * free any old entries somehow, or we end up with a memory
1378 * leak every time my_setenv() is called. One might think
1379 * one could directly manipulate environ[], like the UNIX code
1380 * above, but direct changes to environ are not allowed when
1381 * calling putenv(), since the RTLs maintain an internal
1382 * *copy* of environ[]. Bad, bad, *bad* stink.
1383 * GSAR 97-06-07
1384 */
68dc0745 1385
3e3baf6d
TB
1386 if (!val) {
1387 if (!oldstr)
1388 return;
1389 val = "";
1390 vallen = 0;
1391 }
1392 else
1393 vallen = strlen(val);
fc36a67e 1394 New(904, envstr, namlen + vallen + 3, char);
68dc0745 1395 (void)sprintf(envstr,"%s=%s",nam,val);
3e3baf6d
TB
1396 (void)putenv(envstr);
1397 if (oldstr)
1398 Safefree(oldstr);
1399#ifdef _MSC_VER
1400 Safefree(envstr); /* MSVCRT leaks without this */
1401#endif
1402
1403#else /* !USE_WIN32_RTL_ENV */
1404
1405 /* The sane way to deal with the environment.
1406 * Has these advantages over putenv() & co.:
1407 * * enables us to store a truly empty value in the
1408 * environment (like in UNIX).
1409 * * we don't have to deal with RTL globals, bugs and leaks.
1410 * * Much faster.
1411 * Why you may want to enable USE_WIN32_RTL_ENV:
1412 * * environ[] and RTL functions will not reflect changes,
1413 * which might be an issue if extensions want to access
1414 * the env. via RTL. This cuts both ways, since RTL will
1415 * not see changes made by extensions that call the Win32
1416 * functions directly, either.
1417 * GSAR 97-06-07
1418 */
1419 SetEnvironmentVariable(nam,val);
1420
1421#endif
1422}
1423
1424#endif /* WIN32 */
1425
1426I32
8ac85365 1427setenv_getix(char *nam)
3e3baf6d
TB
1428{
1429 register I32 i, len = strlen(nam);
1430
1431 for (i = 0; environ[i]; i++) {
1432 if (
1433#ifdef WIN32
1434 strnicmp(environ[i],nam,len) == 0
1435#else
1436 strnEQ(environ[i],nam,len)
1437#endif
1438 && environ[i][len] == '=')
1439 break; /* strnEQ must come first to avoid */
1440 } /* potential SEGV's */
1441 return i;
68dc0745
PP
1442}
1443
a0d0e21e 1444#endif /* !VMS */
378cc40b 1445
16d20bd9 1446#ifdef UNLINK_ALL_VERSIONS
79072805 1447I32
378cc40b
LW
1448unlnk(f) /* unlink all versions of a file */
1449char *f;
1450{
79072805 1451 I32 i;
378cc40b
LW
1452
1453 for (i = 0; unlink(f) >= 0; i++) ;
1454 return i ? 0 : -1;
1455}
1456#endif
1457
85e6fe83 1458#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 1459char *
4e35701f 1460my_bcopy(register char *from,register char *to,register I32 len)
378cc40b
LW
1461{
1462 char *retval = to;
1463
7c0587c8
LW
1464 if (from - to >= 0) {
1465 while (len--)
1466 *to++ = *from++;
1467 }
1468 else {
1469 to += len;
1470 from += len;
1471 while (len--)
faf8582f 1472 *(--to) = *(--from);
7c0587c8 1473 }
378cc40b
LW
1474 return retval;
1475}
ffed7fef 1476#endif
378cc40b 1477
fc36a67e
PP
1478#ifndef HAS_MEMSET
1479void *
1480my_memset(loc,ch,len)
1481register char *loc;
1482register I32 ch;
1483register I32 len;
1484{
1485 char *retval = loc;
1486
1487 while (len--)
1488 *loc++ = ch;
1489 return retval;
1490}
1491#endif
1492
7c0587c8 1493#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 1494char *
7c0587c8 1495my_bzero(loc,len)
378cc40b 1496register char *loc;
79072805 1497register I32 len;
378cc40b
LW
1498{
1499 char *retval = loc;
1500
1501 while (len--)
1502 *loc++ = 0;
1503 return retval;
1504}
1505#endif
7c0587c8 1506
36477c24 1507#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 1508I32
7c0587c8 1509my_memcmp(s1,s2,len)
36477c24
PP
1510char *s1;
1511char *s2;
79072805 1512register I32 len;
7c0587c8 1513{
36477c24
PP
1514 register U8 *a = (U8 *)s1;
1515 register U8 *b = (U8 *)s2;
79072805 1516 register I32 tmp;
7c0587c8
LW
1517
1518 while (len--) {
36477c24 1519 if (tmp = *a++ - *b++)
7c0587c8
LW
1520 return tmp;
1521 }
1522 return 0;
1523}
36477c24 1524#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 1525
4633a7c4 1526#if defined(I_STDARG) || defined(I_VARARGS)
fe14fcc3 1527#ifndef HAS_VPRINTF
a687059c 1528
85e6fe83 1529#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1530char *
1531#else
1532int
1533#endif
1534vsprintf(dest, pat, args)
71be2cbc
PP
1535char *dest;
1536const char *pat;
1537char *args;
a687059c
LW
1538{
1539 FILE fakebuf;
1540
1541 fakebuf._ptr = dest;
1542 fakebuf._cnt = 32767;
35c8bce7
LW
1543#ifndef _IOSTRG
1544#define _IOSTRG 0
1545#endif
a687059c
LW
1546 fakebuf._flag = _IOWRT|_IOSTRG;
1547 _doprnt(pat, args, &fakebuf); /* what a kludge */
1548 (void)putc('\0', &fakebuf);
85e6fe83 1549#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1550 return(dest);
1551#else
1552 return 0; /* perl doesn't use return value */
1553#endif
1554}
1555
fe14fcc3 1556#endif /* HAS_VPRINTF */
4633a7c4 1557#endif /* I_VARARGS || I_STDARGS */
a687059c
LW
1558
1559#ifdef MYSWAP
ffed7fef 1560#if BYTEORDER != 0x4321
a687059c 1561short
748a9306 1562#ifndef CAN_PROTOTYPE
a687059c
LW
1563my_swap(s)
1564short s;
748a9306
LW
1565#else
1566my_swap(short s)
1567#endif
a687059c
LW
1568{
1569#if (BYTEORDER & 1) == 0
1570 short result;
1571
1572 result = ((s & 255) << 8) + ((s >> 8) & 255);
1573 return result;
1574#else
1575 return s;
1576#endif
1577}
1578
1579long
748a9306
LW
1580#ifndef CAN_PROTOTYPE
1581my_htonl(l)
a687059c 1582register long l;
748a9306
LW
1583#else
1584my_htonl(long l)
1585#endif
a687059c
LW
1586{
1587 union {
1588 long result;
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.result;
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 1604
ffed7fef
LW
1605 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1606 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW
1607 }
1608 return u.result;
1609#endif
1610#endif
1611}
1612
1613long
748a9306
LW
1614#ifndef CAN_PROTOTYPE
1615my_ntohl(l)
a687059c 1616register long l;
748a9306
LW
1617#else
1618my_ntohl(long l)
1619#endif
a687059c
LW
1620{
1621 union {
1622 long l;
ffed7fef 1623 char c[sizeof(long)];
a687059c
LW
1624 } u;
1625
ffed7fef 1626#if BYTEORDER == 0x1234
a687059c
LW
1627 u.c[0] = (l >> 24) & 255;
1628 u.c[1] = (l >> 16) & 255;
1629 u.c[2] = (l >> 8) & 255;
1630 u.c[3] = l & 255;
1631 return u.l;
1632#else
ffed7fef 1633#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1634 croak("Unknown BYTEORDER\n");
a687059c 1635#else
79072805
LW
1636 register I32 o;
1637 register I32 s;
a687059c
LW
1638
1639 u.l = l;
1640 l = 0;
ffed7fef
LW
1641 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1642 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW
1643 }
1644 return l;
1645#endif
1646#endif
1647}
1648
ffed7fef 1649#endif /* BYTEORDER != 0x4321 */
988174c1
LW
1650#endif /* MYSWAP */
1651
1652/*
1653 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
1654 * If these functions are defined,
1655 * the BYTEORDER is neither 0x1234 nor 0x4321.
1656 * However, this is not assumed.
1657 * -DWS
1658 */
1659
1660#define HTOV(name,type) \
1661 type \
1662 name (n) \
1663 register type n; \
1664 { \
1665 union { \
1666 type value; \
1667 char c[sizeof(type)]; \
1668 } u; \
79072805
LW
1669 register I32 i; \
1670 register I32 s; \
988174c1
LW
1671 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1672 u.c[i] = (n >> s) & 0xFF; \
1673 } \
1674 return u.value; \
1675 }
1676
1677#define VTOH(name,type) \
1678 type \
1679 name (n) \
1680 register type n; \
1681 { \
1682 union { \
1683 type value; \
1684 char c[sizeof(type)]; \
1685 } u; \
79072805
LW
1686 register I32 i; \
1687 register I32 s; \
988174c1
LW
1688 u.value = n; \
1689 n = 0; \
1690 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1691 n += (u.c[i] & 0xFF) << s; \
1692 } \
1693 return n; \
1694 }
1695
1696#if defined(HAS_HTOVS) && !defined(htovs)
1697HTOV(htovs,short)
1698#endif
1699#if defined(HAS_HTOVL) && !defined(htovl)
1700HTOV(htovl,long)
1701#endif
1702#if defined(HAS_VTOHS) && !defined(vtohs)
1703VTOH(vtohs,short)
1704#endif
1705#if defined(HAS_VTOHL) && !defined(vtohl)
1706VTOH(vtohl,long)
1707#endif
a687059c 1708
5f05dabc
PP
1709 /* VMS' my_popen() is in VMS.c, same with OS/2. */
1710#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS)
760ac839 1711PerlIO *
8ac85365 1712my_popen(char *cmd, char *mode)
a687059c
LW
1713{
1714 int p[2];
8ac85365 1715 register I32 This, that;
79072805
LW
1716 register I32 pid;
1717 SV *sv;
1738f5c4 1718 I32 doexec = strNE(cmd,"-");
a687059c 1719
ddcf38b7
IZ
1720#ifdef OS2
1721 if (doexec) {
1722 return my_syspopen(cmd,mode);
1723 }
1724#endif
a687059c
LW
1725 if (pipe(p) < 0)
1726 return Nullfp;
8ac85365
NIS
1727 This = (*mode == 'w');
1728 that = !This;
bbce6d69
PP
1729 if (doexec && tainting) {
1730 taint_env();
1731 taint_proper("Insecure %s%s", "EXEC");
d48672a2 1732 }
a687059c
LW
1733 while ((pid = (doexec?vfork():fork())) < 0) {
1734 if (errno != EAGAIN) {
8ac85365 1735 close(p[This]);
a687059c 1736 if (!doexec)
463ee0b2 1737 croak("Can't fork");
a687059c
LW
1738 return Nullfp;
1739 }
1740 sleep(5);
1741 }
1742 if (pid == 0) {
79072805
LW
1743 GV* tmpgv;
1744
a687059c 1745#define THIS that
8ac85365 1746#define THAT This
a687059c
LW
1747 close(p[THAT]);
1748 if (p[THIS] != (*mode == 'r')) {
1749 dup2(p[THIS], *mode == 'r');
1750 close(p[THIS]);
1751 }
1752 if (doexec) {
a0d0e21e 1753#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW
1754 int fd;
1755
1756#ifndef NOFILE
1757#define NOFILE 20
1758#endif
d48672a2 1759 for (fd = maxsysfd + 1; fd < NOFILE; fd++)
ae986130
LW
1760 close(fd);
1761#endif
a687059c
LW
1762 do_exec(cmd); /* may or may not use the shell */
1763 _exit(1);
1764 }
de3bb511 1765 /*SUPPRESS 560*/
85e6fe83 1766 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
1e422769 1767 sv_setiv(GvSV(tmpgv), (IV)getpid());
9f68db38 1768 forkprocess = 0;
463ee0b2 1769 hv_clear(pidstatus); /* we have no children */
a687059c
LW
1770 return Nullfp;
1771#undef THIS
1772#undef THAT
1773 }
62b28dd9 1774 do_execfree(); /* free any memory malloced by child on vfork */
a687059c 1775 close(p[that]);
8ac85365
NIS
1776 if (p[that] < p[This]) {
1777 dup2(p[This], p[that]);
1778 close(p[This]);
1779 p[This] = p[that];
62b28dd9 1780 }
8ac85365 1781 sv = *av_fetch(fdpid,p[This],TRUE);
a0d0e21e 1782 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 1783 SvIVX(sv) = pid;
a687059c 1784 forkprocess = pid;
8ac85365 1785 return PerlIO_fdopen(p[This], mode);
a687059c 1786}
7c0587c8 1787#else
55497cff 1788#if defined(atarist) || defined(DJGPP)
7c0587c8 1789FILE *popen();
760ac839 1790PerlIO *
79072805 1791my_popen(cmd,mode)
7c0587c8
LW
1792char *cmd;
1793char *mode;
1794{
760ac839 1795 /* Needs work for PerlIO ! */
55497cff
PP
1796 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
1797 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW
1798}
1799#endif
1800
1801#endif /* !DOSISH */
a687059c 1802
748a9306 1803#ifdef DUMP_FDS
79072805 1804dump_fds(s)
ae986130
LW
1805char *s;
1806{
1807 int fd;
1808 struct stat tmpstatbuf;
1809
760ac839 1810 PerlIO_printf(PerlIO_stderr(),"%s", s);
ae986130 1811 for (fd = 0; fd < 32; fd++) {
a0d0e21e 1812 if (Fstat(fd,&tmpstatbuf) >= 0)
760ac839 1813 PerlIO_printf(PerlIO_stderr()," %d",fd);
ae986130 1814 }
760ac839 1815 PerlIO_printf(PerlIO_stderr(),"\n");
ae986130
LW
1816}
1817#endif
1818
fe14fcc3 1819#ifndef HAS_DUP2
fec02dd3 1820int
a687059c
LW
1821dup2(oldfd,newfd)
1822int oldfd;
1823int newfd;
1824{
a0d0e21e 1825#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD
1826 if (oldfd == newfd)
1827 return oldfd;
62b28dd9 1828 close(newfd);
fec02dd3 1829 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 1830#else
fc36a67e
PP
1831#define DUP2_MAX_FDS 256
1832 int fdtmp[DUP2_MAX_FDS];
79072805 1833 I32 fdx = 0;
ae986130
LW
1834 int fd;
1835
fe14fcc3 1836 if (oldfd == newfd)
fec02dd3 1837 return oldfd;
a687059c 1838 close(newfd);
fc36a67e
PP
1839 /* good enough for low fd's... */
1840 while ((fd = dup(oldfd)) != newfd && fd >= 0) {
1841 if (fdx >= DUP2_MAX_FDS) {
1842 close(fd);
1843 fd = -1;
1844 break;
1845 }
ae986130 1846 fdtmp[fdx++] = fd;
fc36a67e 1847 }
ae986130
LW
1848 while (fdx > 0)
1849 close(fdtmp[--fdx]);
fec02dd3 1850 return fd;
62b28dd9 1851#endif
a687059c
LW
1852}
1853#endif
1854
ff68c719
PP
1855
1856#ifdef HAS_SIGACTION
1857
1858Sighandler_t
8ac85365 1859rsignal(int signo, Sighandler_t handler)
ff68c719
PP
1860{
1861 struct sigaction act, oact;
1862
1863 act.sa_handler = handler;
1864 sigemptyset(&act.sa_mask);
1865 act.sa_flags = 0;
1866#ifdef SA_RESTART
1867 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
1868#endif
1869 if (sigaction(signo, &act, &oact) == -1)
36477c24 1870 return SIG_ERR;
ff68c719 1871 else
36477c24 1872 return oact.sa_handler;
ff68c719
PP
1873}
1874
1875Sighandler_t
8ac85365 1876rsignal_state(int signo)
ff68c719
PP
1877{
1878 struct sigaction oact;
1879
1880 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
1881 return SIG_ERR;
1882 else
1883 return oact.sa_handler;
1884}
1885
1886int
8ac85365 1887rsignal_save(int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719
PP
1888{
1889 struct sigaction act;
1890
1891 act.sa_handler = handler;
1892 sigemptyset(&act.sa_mask);
1893 act.sa_flags = 0;
1894#ifdef SA_RESTART
1895 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
1896#endif
1897 return sigaction(signo, &act, save);
1898}
1899
1900int
8ac85365 1901rsignal_restore(int signo, Sigsave_t *save)
ff68c719
PP
1902{
1903 return sigaction(signo, save, (struct sigaction *)NULL);
1904}
1905
1906#else /* !HAS_SIGACTION */
1907
1908Sighandler_t
4e35701f 1909rsignal(int signo, Sighandler_t handler)
ff68c719
PP
1910{
1911 return signal(signo, handler);
1912}
1913
1914static int sig_trapped;
1915
1916static
1917Signal_t
4e35701f 1918sig_trap(int signo)
ff68c719
PP
1919{
1920 sig_trapped++;
1921}
1922
1923Sighandler_t
4e35701f 1924rsignal_state(int signo)
ff68c719
PP
1925{
1926 Sighandler_t oldsig;
1927
1928 sig_trapped = 0;
1929 oldsig = signal(signo, sig_trap);
1930 signal(signo, oldsig);
1931 if (sig_trapped)
1932 kill(getpid(), signo);
1933 return oldsig;
1934}
1935
1936int
4e35701f 1937rsignal_save(int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719
PP
1938{
1939 *save = signal(signo, handler);
1940 return (*save == SIG_ERR) ? -1 : 0;
1941}
1942
1943int
4e35701f 1944rsignal_restore(int signo, Sigsave_t *save)
ff68c719
PP
1945{
1946 return (signal(signo, *save) == SIG_ERR) ? -1 : 0;
1947}
1948
1949#endif /* !HAS_SIGACTION */
1950
5f05dabc
PP
1951 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
1952#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS)
79072805 1953I32
8ac85365 1954my_pclose(FILE *ptr)
a687059c 1955{
ff68c719 1956 Sigsave_t hstat, istat, qstat;
a687059c 1957 int status;
a0d0e21e 1958 SV **svp;
20188a90 1959 int pid;
03136e13
CS
1960 bool close_failed;
1961 int saved_errno;
1962#ifdef VMS
1963 int saved_vaxc_errno;
1964#endif
a687059c 1965
760ac839 1966 svp = av_fetch(fdpid,PerlIO_fileno(ptr),TRUE);
748a9306 1967 pid = (int)SvIVX(*svp);
a0d0e21e
LW
1968 SvREFCNT_dec(*svp);
1969 *svp = &sv_undef;
ddcf38b7
IZ
1970#ifdef OS2
1971 if (pid == -1) { /* Opened by popen. */
1972 return my_syspclose(ptr);
1973 }
1974#endif
03136e13
CS
1975 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
1976 saved_errno = errno;
1977#ifdef VMS
1978 saved_vaxc_errno = vaxc$errno;
1979#endif
1980 }
7c0587c8
LW
1981#ifdef UTS
1982 if(kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
1983#endif
ff68c719
PP
1984 rsignal_save(SIGHUP, SIG_IGN, &hstat);
1985 rsignal_save(SIGINT, SIG_IGN, &istat);
1986 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306
LW
1987 do {
1988 pid = wait4pid(pid, &status, 0);
1989 } while (pid == -1 && errno == EINTR);
ff68c719
PP
1990 rsignal_restore(SIGHUP, &hstat);
1991 rsignal_restore(SIGINT, &istat);
1992 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS
1993 if (close_failed) {
1994 SETERRNO(saved_errno, saved_vaxc_errno);
1995 return -1;
1996 }
1997 return(pid < 0 ? pid : status == 0 ? 0 : (errno = 0, status));
20188a90 1998}
4633a7c4
LW
1999#endif /* !DOSISH */
2000
2001#if !defined(DOSISH) || defined(OS2)
79072805 2002I32
8ac85365 2003wait4pid(int pid, int *statusp, int flags)
20188a90 2004{
79072805
LW
2005 SV *sv;
2006 SV** svp;
fc36a67e 2007 char spid[TYPE_CHARS(int)];
20188a90
LW
2008
2009 if (!pid)
2010 return -1;
20188a90
LW
2011 if (pid > 0) {
2012 sprintf(spid, "%d", pid);
79072805
LW
2013 svp = hv_fetch(pidstatus,spid,strlen(spid),FALSE);
2014 if (svp && *svp != &sv_undef) {
463ee0b2 2015 *statusp = SvIVX(*svp);
748a9306 2016 (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2017 return pid;
2018 }
2019 }
2020 else {
79072805 2021 HE *entry;
20188a90 2022
79072805
LW
2023 hv_iterinit(pidstatus);
2024 if (entry = hv_iternext(pidstatus)) {
a0d0e21e 2025 pid = atoi(hv_iterkey(entry,(I32*)statusp));
79072805 2026 sv = hv_iterval(pidstatus,entry);
463ee0b2 2027 *statusp = SvIVX(sv);
20188a90 2028 sprintf(spid, "%d", pid);
748a9306 2029 (void)hv_delete(pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2030 return pid;
2031 }
2032 }
79072805 2033#ifdef HAS_WAITPID
367f3c24
IZ
2034# ifdef HAS_WAITPID_RUNTIME
2035 if (!HAS_WAITPID_RUNTIME)
2036 goto hard_way;
2037# endif
79072805 2038 return waitpid(pid,statusp,flags);
367f3c24
IZ
2039#endif
2040#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2041 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ
2042#endif
2043#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2044 hard_way:
a0d0e21e
LW
2045 {
2046 I32 result;
2047 if (flags)
2048 croak("Can't do waitpid with flags");
2049 else {
2050 while ((result = wait(statusp)) != pid && pid > 0 && result >= 0)
2051 pidgone(result,*statusp);
2052 if (result < 0)
2053 *statusp = -1;
2054 }
2055 return result;
a687059c
LW
2056 }
2057#endif
a687059c 2058}
7c0587c8 2059#endif /* !DOSISH */
a687059c 2060
7c0587c8 2061void
de3bb511 2062/*SUPPRESS 590*/
8ac85365 2063pidgone(int pid, int status)
a687059c 2064{
79072805 2065 register SV *sv;
fc36a67e 2066 char spid[TYPE_CHARS(int)];
a687059c 2067
20188a90 2068 sprintf(spid, "%d", pid);
79072805 2069 sv = *hv_fetch(pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2070 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2071 SvIVX(sv) = status;
20188a90 2072 return;
a687059c
LW
2073}
2074
55497cff 2075#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2076int pclose();
ddcf38b7
IZ
2077#ifdef HAS_FORK
2078int /* Cannot prototype with I32
2079 in os2ish.h. */
2080my_syspclose(ptr)
2081#else
79072805
LW
2082I32
2083my_pclose(ptr)
ddcf38b7 2084#endif
760ac839 2085PerlIO *ptr;
a687059c 2086{
760ac839
LW
2087 /* Needs work for PerlIO ! */
2088 FILE *f = PerlIO_findFILE(ptr);
2089 I32 result = pclose(f);
2090 PerlIO_releaseFILE(ptr,f);
2091 return result;
a687059c 2092}
7c0587c8 2093#endif
9f68db38
LW
2094
2095void
8ac85365 2096repeatcpy(register char *to, register char *from, I32 len, register I32 count)
9f68db38 2097{
79072805 2098 register I32 todo;
9f68db38
LW
2099 register char *frombase = from;
2100
2101 if (len == 1) {
2102 todo = *from;
2103 while (count-- > 0)
2104 *to++ = todo;
2105 return;
2106 }
2107 while (count-- > 0) {
2108 for (todo = len; todo > 0; todo--) {
2109 *to++ = *from++;
2110 }
2111 from = frombase;
2112 }
2113}
0f85fab0
LW
2114
2115#ifndef CASTNEGFLOAT
463ee0b2 2116U32
79072805 2117cast_ulong(f)
0f85fab0
LW
2118double f;
2119{
2120 long along;
2121
27e2fb84 2122#if CASTFLAGS & 2
34de22dd
LW
2123# define BIGDOUBLE 2147483648.0
2124 if (f >= BIGDOUBLE)
2125 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2126#endif
0f85fab0
LW
2127 if (f >= 0.0)
2128 return (unsigned long)f;
2129 along = (long)f;
2130 return (unsigned long)along;
2131}
ed6116ce
LW
2132# undef BIGDOUBLE
2133#endif
2134
2135#ifndef CASTI32
5d94fbed 2136
5d94fbed
AD
2137/* Unfortunately, on some systems the cast_uv() function doesn't
2138 work with the system-supplied definition of ULONG_MAX. The
2139 comparison (f >= ULONG_MAX) always comes out true. It must be a
2140 problem with the compiler constant folding.
2141
2142 In any case, this workaround should be fine on any two's complement
2143 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2144 ccflags.
2145 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2146*/
1eb770ff
PP
2147
2148/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2149 of LONG_(MIN/MAX).
2150 -- Kenneth Albanowski <kjahds@kjahds.com>
2151*/
2152
20cec16a
PP
2153#ifndef MY_UV_MAX
2154# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD
2155#endif
2156
ed6116ce
LW
2157I32
2158cast_i32(f)
2159double f;
2160{
20cec16a
PP
2161 if (f >= I32_MAX)
2162 return (I32) I32_MAX;
2163 if (f <= I32_MIN)
2164 return (I32) I32_MIN;
ed6116ce
LW
2165 return (I32) f;
2166}
a0d0e21e
LW
2167
2168IV
2169cast_iv(f)
2170double f;
2171{
20cec16a
PP
2172 if (f >= IV_MAX)
2173 return (IV) IV_MAX;
2174 if (f <= IV_MIN)
2175 return (IV) IV_MIN;
a0d0e21e
LW
2176 return (IV) f;
2177}
5d94fbed
AD
2178
2179UV
2180cast_uv(f)
2181double f;
2182{
20cec16a
PP
2183 if (f >= MY_UV_MAX)
2184 return (UV) MY_UV_MAX;
5d94fbed
AD
2185 return (UV) f;
2186}
2187
0f85fab0 2188#endif
62b28dd9 2189
fe14fcc3 2190#ifndef HAS_RENAME
79072805 2191I32
62b28dd9
LW
2192same_dirent(a,b)
2193char *a;
2194char *b;
2195{
93a17b20
LW
2196 char *fa = strrchr(a,'/');
2197 char *fb = strrchr(b,'/');
62b28dd9
LW
2198 struct stat tmpstatbuf1;
2199 struct stat tmpstatbuf2;
46fc3d4c 2200 SV *tmpsv = sv_newmortal();
62b28dd9
LW
2201
2202 if (fa)
2203 fa++;
2204 else
2205 fa = a;
2206 if (fb)
2207 fb++;
2208 else
2209 fb = b;
2210 if (strNE(a,b))
2211 return FALSE;
2212 if (fa == a)
46fc3d4c 2213 sv_setpv(tmpsv, ".");
62b28dd9 2214 else
46fc3d4c
PP
2215 sv_setpvn(tmpsv, a, fa - a);
2216 if (Stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW
2217 return FALSE;
2218 if (fb == b)
46fc3d4c 2219 sv_setpv(tmpsv, ".");
62b28dd9 2220 else
46fc3d4c
PP
2221 sv_setpvn(tmpsv, b, fb - b);
2222 if (Stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW
2223 return FALSE;
2224 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2225 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2226}
fe14fcc3
LW
2227#endif /* !HAS_RENAME */
2228
55497cff 2229UV
8ac85365 2230scan_oct(char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2231{
2232 register char *s = start;
55497cff
PP
2233 register UV retval = 0;
2234 bool overflowed = FALSE;
fe14fcc3 2235
748a9306 2236 while (len && *s >= '0' && *s <= '7') {
55497cff
PP
2237 register UV n = retval << 3;
2238 if (!overflowed && (n >> 3) != retval) {
2239 warn("Integer overflow in octal number");
2240 overflowed = TRUE;
2241 }
2242 retval = n | (*s++ - '0');
748a9306 2243 len--;
fe14fcc3 2244 }
748a9306
LW
2245 if (dowarn && len && (*s == '8' || *s == '9'))
2246 warn("Illegal octal digit ignored");
fe14fcc3
LW
2247 *retlen = s - start;
2248 return retval;
2249}
2250
71be2cbc 2251UV
8ac85365 2252scan_hex(char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2253{
2254 register char *s = start;
55497cff
PP
2255 register UV retval = 0;
2256 bool overflowed = FALSE;
fe14fcc3
LW
2257 char *tmp;
2258
4e35701f 2259 while (len-- && *s && (tmp = strchr((char *) hexdigit, *s))) {
55497cff
PP
2260 register UV n = retval << 4;
2261 if (!overflowed && (n >> 4) != retval) {
2262 warn("Integer overflow in hex number");
2263 overflowed = TRUE;
2264 }
4e35701f 2265 retval = n | ((tmp - hexdigit) & 15);
fe14fcc3
LW
2266 s++;
2267 }
2268 *retlen = s - start;
2269 return retval;
2270}
760ac839 2271
11343788 2272#ifdef USE_THREADS
12ca11f6
MB
2273#ifdef FAKE_THREADS
2274/* Very simplistic scheduler for now */
2275void
2276schedule(void)
2277{
c7848ba1 2278 thr = thr->i.next_run;
12ca11f6
MB
2279}
2280
2281void
2282perl_cond_init(cp)
2283perl_cond *cp;
2284{
2285 *cp = 0;
2286}
2287
2288void
2289perl_cond_signal(cp)
2290perl_cond *cp;
2291{
2292 perl_thread t;
2293 perl_cond cond = *cp;
2294
2295 if (!cond)
2296 return;
2297 t = cond->thread;
2298 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
2299 t->i.next_run = thr->i.next_run;
2300 thr->i.next_run->i.prev_run = t;
2301 t->i.prev_run = thr;
2302 thr->i.next_run = t;
2303 thr->i.wait_queue = 0;
12ca11f6
MB
2304 /* Remove from the wait queue */
2305 *cp = cond->next;
2306 Safefree(cond);
2307}
2308
2309void
2310perl_cond_broadcast(cp)
2311perl_cond *cp;
2312{
2313 perl_thread t;
2314 perl_cond cond, cond_next;
2315
2316 for (cond = *cp; cond; cond = cond_next) {
2317 t = cond->thread;
2318 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
2319 t->i.next_run = thr->i.next_run;
2320 thr->i.next_run->i.prev_run = t;
2321 t->i.prev_run = thr;
2322 thr->i.next_run = t;
2323 thr->i.wait_queue = 0;
12ca11f6
MB
2324 /* Remove from the wait queue */
2325 cond_next = cond->next;
2326 Safefree(cond);
2327 }
2328 *cp = 0;
2329}
2330
2331void
2332perl_cond_wait(cp)
2333perl_cond *cp;
2334{
2335 perl_cond cond;
2336
c7848ba1 2337 if (thr->i.next_run == thr)
12ca11f6
MB
2338 croak("panic: perl_cond_wait called by last runnable thread");
2339
0f15f207 2340 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB
2341 cond->thread = thr;
2342 cond->next = *cp;
2343 *cp = cond;
c7848ba1 2344 thr->i.wait_queue = cond;
12ca11f6 2345 /* Remove ourselves from runnable queue */
c7848ba1
MB
2346 thr->i.next_run->i.prev_run = thr->i.prev_run;
2347 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB
2348}
2349#endif /* FAKE_THREADS */
2350
11343788
MB
2351#ifdef OLD_PTHREADS_API
2352struct thread *
2353getTHR _((void))
2354{
2355 pthread_addr_t t;
2356
2357 if (pthread_getspecific(thr_key, &t))
2358 croak("panic: pthread_getspecific");
2359 return (struct thread *) t;
2360}
2361#endif /* OLD_PTHREADS_API */
f93b4edd
MB
2362
2363MAGIC *
8ac85365 2364condpair_magic(SV *sv)
f93b4edd
MB
2365{
2366 MAGIC *mg;
2367
2368 SvUPGRADE(sv, SVt_PVMG);
2369 mg = mg_find(sv, 'm');
2370 if (!mg) {
2371 condpair_t *cp;
2372
2373 New(53, cp, 1, condpair_t);
2374 MUTEX_INIT(&cp->mutex);
2375 COND_INIT(&cp->owner_cond);
2376 COND_INIT(&cp->cond);
2377 cp->owner = 0;
2378 MUTEX_LOCK(&sv_mutex);
2379 mg = mg_find(sv, 'm');
2380 if (mg) {
2381 /* someone else beat us to initialising it */
2382 MUTEX_UNLOCK(&sv_mutex);
2383 MUTEX_DESTROY(&cp->mutex);
2384 COND_DESTROY(&cp->owner_cond);
2385 COND_DESTROY(&cp->cond);
2386 Safefree(cp);
2387 }
2388 else {
2389 sv_magic(sv, Nullsv, 'm', 0, 0);
2390 mg = SvMAGIC(sv);
2391 mg->mg_ptr = (char *)cp;
2392 mg->mg_len = sizeof(cp);
2393 MUTEX_UNLOCK(&sv_mutex);
bc1f4c86 2394 DEBUG_L(WITH_THR(PerlIO_printf(PerlIO_stderr(),
c7848ba1 2395 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB
2396 }
2397 }
2398 return mg;
2399}
a863c7d1
MB
2400
2401/*
199100c8
MB
2402 * Make a new perl thread structure using t as a prototype. Some of the
2403 * fields for the new thread are copied from the prototype thread, t,
2404 * so t should not be running in perl at the time this function is
2405 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
2406 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1
MB
2407 */
2408struct thread *
12f917ad 2409new_struct_thread(struct thread *t)
a863c7d1
MB
2410{
2411 struct thread *thr;
a863c7d1 2412 SV *sv;
199100c8
MB
2413 SV **svp;
2414 I32 i;
2415
2416 sv = newSVpv("", 0);
2417 SvGROW(sv, sizeof(struct thread) + 1);
2418 SvCUR_set(sv, sizeof(struct thread));
2419 thr = (Thread) SvPVX(sv);
199100c8
MB
2420 /* debug */
2421 memset(thr, 0xab, sizeof(struct thread));
2422 markstack = 0;
2423 scopestack = 0;
2424 savestack = 0;
2425 retstack = 0;
2426 dirty = 0;
2427 localizing = 0;
2428 /* end debug */
2429
2430 thr->oursv = sv;
d55594ae 2431 init_stacks(ARGS);
a863c7d1 2432
a863c7d1 2433 curcop = &compiling;
199100c8 2434 thr->cvcache = newHV();
554b3eca 2435 thr->magicals = newAV();
a863c7d1 2436 thr->specific = newAV();
38a03e6e
MB
2437 thr->errsv = newSVpv("", 0);
2438 thr->errhv = newHV();
a863c7d1
MB
2439 thr->flags = THRf_R_JOINABLE;
2440 MUTEX_INIT(&thr->mutex);
199100c8
MB
2441
2442 curcop = t->Tcurcop; /* XXX As good a guess as any? */
2443 defstash = t->Tdefstash; /* XXX maybe these should */
2444 curstash = t->Tcurstash; /* always be set to main? */
d55594ae
GS
2445
2446
2447 /* top_env needs to be non-zero. It points to an area
2448 in which longjmp() stuff is stored, as C callstack
2449 info there at least is thread specific this has to
2450 be per-thread. Otherwise a 'die' in a thread gives
2451 that thread the C stack of last thread to do an eval {}!
2452 See comments in scope.h
2453 Initialize top entry (as in perl.c for main thread)
2454 */
2455 start_env.je_prev = NULL;
2456 start_env.je_ret = -1;
2457 start_env.je_mustcatch = TRUE;
2458 top_env = &start_env;
2459
199100c8
MB
2460 in_eval = FALSE;
2461 restartop = 0;
2462
2463 tainted = t->Ttainted;
2464 curpm = t->Tcurpm; /* XXX No PMOP ref count */
2465 nrs = newSVsv(t->Tnrs);
2466 rs = newSVsv(t->Trs);
2467 last_in_gv = (GV*)SvREFCNT_inc(t->Tlast_in_gv);
2468 ofslen = t->Tofslen;
2469 ofs = savepvn(t->Tofs, ofslen);
2470 defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
2471 chopset = t->Tchopset;
2472 formtarget = newSVsv(t->Tformtarget);
2473 bodytarget = newSVsv(t->Tbodytarget);
2474 toptarget = newSVsv(t->Ttoptarget);
2475
2476 /* Initialise all per-thread magicals that the template thread used */
2477 svp = AvARRAY(t->magicals);
2478 for (i = 0; i <= AvFILL(t->magicals); i++, svp++) {
2479 if (*svp && *svp != &sv_undef) {
2480 SV *sv = newSVsv(*svp);
2481 av_store(thr->magicals, i, sv);
2482 sv_magic(sv, 0, 0, &per_thread_magicals[i], 1);
2483 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
d55594ae
GS
2484 "new_struct_thread: copied magical %d %p->%p\n",i,
2485 t, thr));
199100c8
MB
2486 }
2487 }
2488
a863c7d1
MB
2489 MUTEX_LOCK(&threads_mutex);
2490 nthreads++;
199100c8
MB
2491 thr->tid = ++threadnum;
2492 thr->next = t->next;
2493 thr->prev = t;
2494 t->next = thr;
2495 thr->next->prev = thr;
a863c7d1
MB
2496 MUTEX_UNLOCK(&threads_mutex);
2497
2498#ifdef HAVE_THREAD_INTERN
2499 init_thread_intern(thr);
a863c7d1 2500#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB
2501 return thr;
2502}
11343788 2503#endif /* USE_THREADS */
760ac839
LW
2504
2505#ifdef HUGE_VAL
2506/*
2507 * This hack is to force load of "huge" support from libm.a
2508 * So it is in perl for (say) POSIX to use.
2509 * Needed for SunOS with Sun's 'acc' for example.
2510 */
2511double
8ac85365 2512Perl_huge(void)
760ac839
LW
2513{
2514 return HUGE_VAL;
2515}
2516#endif
4e35701f 2517