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a0d0e21e 1/* util.c
a687059c 2 *
9607fc9c 3 * Copyright (c) 1991-1997, Larry Wall
a687059c 4 *
d48672a2
LW
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
8d063cd8 7 *
8d063cd8 8 */
a0d0e21e
LW
9
10/*
11 * "Very useful, no doubt, that was to Saruman; yet it seems that he was
12 * not content." --Gandalf
13 */
8d063cd8 14
8d063cd8 15#include "EXTERN.h"
8d063cd8 16#include "perl.h"
62b28dd9 17
6eb13c3b 18#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
a687059c 19#include <signal.h>
62b28dd9 20#endif
a687059c 21
36477c24
PP
22#ifndef SIG_ERR
23# define SIG_ERR ((Sighandler_t) -1)
24#endif
25
bd4080b3 26/* XXX If this causes problems, set i_unistd=undef in the hint file. */
85e6fe83 27#ifdef I_UNISTD
8990e307
LW
28# include <unistd.h>
29#endif
30
a687059c
LW
31#ifdef I_VFORK
32# include <vfork.h>
33#endif
34
94b6baf5
AD
35/* Put this after #includes because fork and vfork prototypes may
36 conflict.
37*/
38#ifndef HAS_VFORK
39# define vfork fork
40#endif
41
fe14fcc3
LW
42#ifdef I_FCNTL
43# include <fcntl.h>
44#endif
45#ifdef I_SYS_FILE
46# include <sys/file.h>
47#endif
48
ff68c719
PP
49#ifdef I_SYS_WAIT
50# include <sys/wait.h>
51#endif
52
8d063cd8 53#define FLUSH
8d063cd8 54
a0d0e21e 55#ifdef LEAKTEST
a0d0e21e 56
8c52afec
IZ
57static void xstat _((int));
58long xcount[MAXXCOUNT];
59long lastxcount[MAXXCOUNT];
60long xycount[MAXXCOUNT][MAXYCOUNT];
61long lastxycount[MAXXCOUNT][MAXYCOUNT];
62
a0d0e21e 63#endif
a863c7d1 64
55497cff 65#ifndef MYMALLOC
de3bb511 66
8d063cd8
LW
67/* paranoid version of malloc */
68
a687059c
LW
69/* NOTE: Do not call the next three routines directly. Use the macros
70 * in handy.h, so that we can easily redefine everything to do tracking of
71 * allocated hunks back to the original New to track down any memory leaks.
20cec16a 72 * XXX This advice seems to be widely ignored :-( --AD August 1996.
a687059c
LW
73 */
74
bd4080b3 75Malloc_t
f0f333f4 76safemalloc(MEM_SIZE size)
8d063cd8 77{
bd4080b3 78 Malloc_t ptr;
55497cff 79#ifdef HAS_64K_LIMIT
62b28dd9 80 if (size > 0xffff) {
760ac839 81 PerlIO_printf(PerlIO_stderr(), "Allocation too large: %lx\n", size) FLUSH;
79072805 82 my_exit(1);
62b28dd9 83 }
55497cff 84#endif /* HAS_64K_LIMIT */
34de22dd
LW
85#ifdef DEBUGGING
86 if ((long)size < 0)
463ee0b2 87 croak("panic: malloc");
34de22dd 88#endif
6ad3d225 89 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
79072805 90#if !(defined(I286) || defined(atarist))
3280af22 91 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) malloc %ld bytes\n",ptr,PL_an++,(long)size));
79072805 92#else
760ac839 93 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) malloc %ld bytes\n",ptr,an++,(long)size));
8d063cd8
LW
94#endif
95 if (ptr != Nullch)
96 return ptr;
3280af22 97 else if (PL_nomemok)
7c0587c8 98 return Nullch;
8d063cd8 99 else {
760ac839 100 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
79072805 101 my_exit(1);
4e35701f 102 return Nullch;
8d063cd8
LW
103 }
104 /*NOTREACHED*/
105}
106
107/* paranoid version of realloc */
108
bd4080b3 109Malloc_t
f0f333f4 110saferealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 111{
bd4080b3 112 Malloc_t ptr;
ecfc5424 113#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
6ad3d225 114 Malloc_t PerlMem_realloc();
ecfc5424 115#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 116
55497cff 117#ifdef HAS_64K_LIMIT
5f05dabc
PP
118 if (size > 0xffff) {
119 PerlIO_printf(PerlIO_stderr(),
120 "Reallocation too large: %lx\n", size) FLUSH;
121 my_exit(1);
122 }
55497cff 123#endif /* HAS_64K_LIMIT */
7614df0c
JD
124 if (!size) {
125 safefree(where);
126 return NULL;
127 }
128
378cc40b 129 if (!where)
7614df0c 130 return safemalloc(size);
34de22dd
LW
131#ifdef DEBUGGING
132 if ((long)size < 0)
463ee0b2 133 croak("panic: realloc");
34de22dd 134#endif
7614df0c 135 ptr = PerlMem_realloc(where,size);
79072805
LW
136
137#if !(defined(I286) || defined(atarist))
138 DEBUG_m( {
3280af22
NIS
139 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) rfree\n",where,PL_an++);
140 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) realloc %ld bytes\n",ptr,PL_an++,(long)size);
79072805
LW
141 } )
142#else
143 DEBUG_m( {
760ac839
LW
144 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) rfree\n",where,an++);
145 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) realloc %ld bytes\n",ptr,an++,(long)size);
79072805 146 } )
8d063cd8 147#endif
79072805 148
8d063cd8
LW
149 if (ptr != Nullch)
150 return ptr;
3280af22 151 else if (PL_nomemok)
7c0587c8 152 return Nullch;
8d063cd8 153 else {
760ac839 154 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
79072805 155 my_exit(1);
4e35701f 156 return Nullch;
8d063cd8
LW
157 }
158 /*NOTREACHED*/
159}
160
161/* safe version of free */
162
54310121 163Free_t
f0f333f4 164safefree(Malloc_t where)
8d063cd8 165{
79072805 166#if !(defined(I286) || defined(atarist))
3280af22 167 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%x: (%05d) free\n",(char *) where,PL_an++));
79072805 168#else
f0f333f4 169 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) free\n",(char *) where,an++));
8d063cd8 170#endif
378cc40b 171 if (where) {
de3bb511 172 /*SUPPRESS 701*/
6ad3d225 173 PerlMem_free(where);
378cc40b 174 }
8d063cd8
LW
175}
176
1050c9ca
PP
177/* safe version of calloc */
178
bd4080b3 179Malloc_t
f0f333f4 180safecalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 181{
bd4080b3 182 Malloc_t ptr;
1050c9ca 183
55497cff 184#ifdef HAS_64K_LIMIT
5f05dabc
PP
185 if (size * count > 0xffff) {
186 PerlIO_printf(PerlIO_stderr(),
187 "Allocation too large: %lx\n", size * count) FLUSH;
188 my_exit(1);
189 }
55497cff 190#endif /* HAS_64K_LIMIT */
1050c9ca
PP
191#ifdef DEBUGGING
192 if ((long)size < 0 || (long)count < 0)
193 croak("panic: calloc");
194#endif
0b7c1c42 195 size *= count;
6ad3d225 196 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
1050c9ca 197#if !(defined(I286) || defined(atarist))
3280af22 198 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) calloc %ld x %ld bytes\n",ptr,PL_an++,(long)count,(long)size));
1050c9ca 199#else
fb73857a 200 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) calloc %ld x %ld bytes\n",ptr,an++,(long)count,(long)size));
1050c9ca 201#endif
1050c9ca
PP
202 if (ptr != Nullch) {
203 memset((void*)ptr, 0, size);
204 return ptr;
205 }
3280af22 206 else if (PL_nomemok)
1050c9ca
PP
207 return Nullch;
208 else {
760ac839 209 PerlIO_puts(PerlIO_stderr(),no_mem) FLUSH;
1050c9ca 210 my_exit(1);
4e35701f 211 return Nullch;
1050c9ca
PP
212 }
213 /*NOTREACHED*/
214}
215
55497cff 216#endif /* !MYMALLOC */
de3bb511 217
a687059c
LW
218#ifdef LEAKTEST
219
8c52afec
IZ
220struct mem_test_strut {
221 union {
222 long type;
223 char c[2];
224 } u;
225 long size;
226};
227
228# define ALIGN sizeof(struct mem_test_strut)
229
230# define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
231# define typeof_chunk(ch) \
232 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
233# define set_typeof_chunk(ch,t) \
234 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
235#define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
236 ? MAXYCOUNT - 1 \
237 : ( (size) > 40 \
238 ? ((size) - 1)/8 + 5 \
239 : ((size) - 1)/4))
8d063cd8 240
bd4080b3 241Malloc_t
f0f333f4 242safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 243{
8c52afec 244 register char* where = (char*)safemalloc(size + ALIGN);
8d063cd8 245
8c52afec
IZ
246 xcount[x] += size;
247 xycount[x][SIZE_TO_Y(size)]++;
248 set_typeof_chunk(where, x);
249 sizeof_chunk(where) = size;
250 return (Malloc_t)(where + ALIGN);
8d063cd8 251}
8d063cd8 252
bd4080b3 253Malloc_t
8c52afec 254safexrealloc(Malloc_t wh, MEM_SIZE size)
a687059c 255{
8c52afec
IZ
256 char *where = (char*)wh;
257
258 if (!wh)
259 return safexmalloc(0,size);
260
261 {
262 MEM_SIZE old = sizeof_chunk(where - ALIGN);
263 int t = typeof_chunk(where - ALIGN);
264 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
265
266 xycount[t][SIZE_TO_Y(old)]--;
267 xycount[t][SIZE_TO_Y(size)]++;
268 xcount[t] += size - old;
269 sizeof_chunk(new) = size;
270 return (Malloc_t)(new + ALIGN);
271 }
a687059c
LW
272}
273
274void
8c52afec 275safexfree(Malloc_t wh)
a687059c 276{
79072805 277 I32 x;
8c52afec
IZ
278 char *where = (char*)wh;
279 MEM_SIZE size;
280
a687059c
LW
281 if (!where)
282 return;
283 where -= ALIGN;
8c52afec 284 size = sizeof_chunk(where);
a687059c 285 x = where[0] + 100 * where[1];
8c52afec
IZ
286 xcount[x] -= size;
287 xycount[x][SIZE_TO_Y(size)]--;
a687059c
LW
288 safefree(where);
289}
290
bd4080b3 291Malloc_t
f0f333f4 292safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 293{
8c52afec
IZ
294 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
295 xcount[x] += size;
296 xycount[x][SIZE_TO_Y(size)]++;
297 memset((void*)(where + ALIGN), 0, size * count);
298 set_typeof_chunk(where, x);
299 sizeof_chunk(where) = size;
300 return (Malloc_t)(where + ALIGN);
1050c9ca
PP
301}
302
7c0587c8 303static void
8c52afec 304xstat(int flag)
8d063cd8 305{
8c52afec
IZ
306 register I32 i, j, total = 0;
307 I32 subtot[MAXYCOUNT];
8d063cd8 308
8c52afec
IZ
309 for (j = 0; j < MAXYCOUNT; j++) {
310 subtot[j] = 0;
311 }
312
313 PerlIO_printf(PerlIO_stderr(), " Id subtot 4 8 12 16 20 24 28 32 36 40 48 56 64 72 80 80+\n", total);
a687059c 314 for (i = 0; i < MAXXCOUNT; i++) {
8c52afec
IZ
315 total += xcount[i];
316 for (j = 0; j < MAXYCOUNT; j++) {
317 subtot[j] += xycount[i][j];
318 }
319 if (flag == 0
320 ? xcount[i] /* Have something */
321 : (flag == 2
322 ? xcount[i] != lastxcount[i] /* Changed */
323 : xcount[i] > lastxcount[i])) { /* Growed */
324 PerlIO_printf(PerlIO_stderr(),"%2d %02d %7ld ", i / 100, i % 100,
325 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
a687059c 326 lastxcount[i] = xcount[i];
8c52afec
IZ
327 for (j = 0; j < MAXYCOUNT; j++) {
328 if ( flag == 0
329 ? xycount[i][j] /* Have something */
330 : (flag == 2
331 ? xycount[i][j] != lastxycount[i][j] /* Changed */
332 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
333 PerlIO_printf(PerlIO_stderr(),"%3ld ",
334 flag == 2
335 ? xycount[i][j] - lastxycount[i][j]
336 : xycount[i][j]);
337 lastxycount[i][j] = xycount[i][j];
338 } else {
339 PerlIO_printf(PerlIO_stderr(), " . ", xycount[i][j]);
340 }
341 }
342 PerlIO_printf(PerlIO_stderr(), "\n");
343 }
344 }
345 if (flag != 2) {
346 PerlIO_printf(PerlIO_stderr(), "Total %7ld ", total);
347 for (j = 0; j < MAXYCOUNT; j++) {
348 if (subtot[j]) {
349 PerlIO_printf(PerlIO_stderr(), "%3ld ", subtot[j]);
350 } else {
351 PerlIO_printf(PerlIO_stderr(), " . ");
352 }
8d063cd8 353 }
8c52afec 354 PerlIO_printf(PerlIO_stderr(), "\n");
8d063cd8 355 }
8d063cd8 356}
a687059c
LW
357
358#endif /* LEAKTEST */
8d063cd8
LW
359
360/* copy a string up to some (non-backslashed) delimiter, if any */
361
362char *
8ac85365 363delimcpy(register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 364{
fc36a67e
PP
365 register I32 tolen;
366 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW
367 if (*from == '\\') {
368 if (from[1] == delim)
369 from++;
fc36a67e
PP
370 else {
371 if (to < toend)
372 *to++ = *from;
373 tolen++;
374 from++;
375 }
378cc40b 376 }
bedebaa5 377 else if (*from == delim)
8d063cd8 378 break;
fc36a67e
PP
379 if (to < toend)
380 *to++ = *from;
8d063cd8 381 }
bedebaa5
CS
382 if (to < toend)
383 *to = '\0';
fc36a67e 384 *retlen = tolen;
8d063cd8
LW
385 return from;
386}
387
388/* return ptr to little string in big string, NULL if not found */
378cc40b 389/* This routine was donated by Corey Satten. */
8d063cd8
LW
390
391char *
8ac85365 392instr(register char *big, register char *little)
378cc40b
LW
393{
394 register char *s, *x;
79072805 395 register I32 first;
378cc40b 396
a687059c
LW
397 if (!little)
398 return big;
399 first = *little++;
378cc40b
LW
400 if (!first)
401 return big;
402 while (*big) {
403 if (*big++ != first)
404 continue;
405 for (x=big,s=little; *s; /**/ ) {
406 if (!*x)
407 return Nullch;
408 if (*s++ != *x++) {
409 s--;
410 break;
411 }
412 }
413 if (!*s)
414 return big-1;
415 }
416 return Nullch;
417}
8d063cd8 418
a687059c
LW
419/* same as instr but allow embedded nulls */
420
421char *
8ac85365 422ninstr(register char *big, register char *bigend, char *little, char *lend)
8d063cd8 423{
a687059c 424 register char *s, *x;
79072805 425 register I32 first = *little;
a687059c 426 register char *littleend = lend;
378cc40b 427
a0d0e21e 428 if (!first && little >= littleend)
a687059c 429 return big;
de3bb511
LW
430 if (bigend - big < littleend - little)
431 return Nullch;
a687059c
LW
432 bigend -= littleend - little++;
433 while (big <= bigend) {
434 if (*big++ != first)
435 continue;
436 for (x=big,s=little; s < littleend; /**/ ) {
437 if (*s++ != *x++) {
438 s--;
439 break;
440 }
441 }
442 if (s >= littleend)
443 return big-1;
378cc40b 444 }
a687059c
LW
445 return Nullch;
446}
447
448/* reverse of the above--find last substring */
449
450char *
8ac85365 451rninstr(register char *big, char *bigend, char *little, char *lend)
a687059c
LW
452{
453 register char *bigbeg;
454 register char *s, *x;
79072805 455 register I32 first = *little;
a687059c
LW
456 register char *littleend = lend;
457
a0d0e21e 458 if (!first && little >= littleend)
a687059c
LW
459 return bigend;
460 bigbeg = big;
461 big = bigend - (littleend - little++);
462 while (big >= bigbeg) {
463 if (*big-- != first)
464 continue;
465 for (x=big+2,s=little; s < littleend; /**/ ) {
466 if (*s++ != *x++) {
467 s--;
468 break;
469 }
470 }
471 if (s >= littleend)
472 return big+1;
378cc40b 473 }
a687059c 474 return Nullch;
378cc40b 475}
a687059c 476
bbce6d69
PP
477/*
478 * Set up for a new ctype locale.
479 */
55497cff 480void
8ac85365 481perl_new_ctype(char *newctype)
ef7eada9 482{
36477c24
PP
483#ifdef USE_LOCALE_CTYPE
484
bbce6d69 485 int i;
ef7eada9 486
bbce6d69
PP
487 for (i = 0; i < 256; i++) {
488 if (isUPPER_LC(i))
489 fold_locale[i] = toLOWER_LC(i);
490 else if (isLOWER_LC(i))
491 fold_locale[i] = toUPPER_LC(i);
492 else
493 fold_locale[i] = i;
494 }
bbce6d69 495
36477c24
PP
496#endif /* USE_LOCALE_CTYPE */
497}
bbce6d69
PP
498
499/*
500 * Set up for a new collation locale.
501 */
502void
8ac85365 503perl_new_collate(char *newcoll)
bbce6d69 504{
36477c24
PP
505#ifdef USE_LOCALE_COLLATE
506
bbce6d69 507 if (! newcoll) {
3280af22
NIS
508 if (PL_collation_name) {
509 ++PL_collation_ix;
510 Safefree(PL_collation_name);
511 PL_collation_name = NULL;
512 PL_collation_standard = TRUE;
513 PL_collxfrm_base = 0;
514 PL_collxfrm_mult = 2;
bbce6d69
PP
515 }
516 return;
517 }
518
3280af22
NIS
519 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
520 ++PL_collation_ix;
521 Safefree(PL_collation_name);
522 PL_collation_name = savepv(newcoll);
523 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 524
bbce6d69
PP
525 {
526 /* 2: at most so many chars ('a', 'b'). */
527 /* 50: surely no system expands a char more. */
528#define XFRMBUFSIZE (2 * 50)
529 char xbuf[XFRMBUFSIZE];
530 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
531 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
532 SSize_t mult = fb - fa;
533 if (mult < 1)
534 croak("strxfrm() gets absurd");
3280af22
NIS
535 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
536 PL_collxfrm_mult = mult;
bbce6d69 537 }
bbce6d69 538 }
bbce6d69 539
36477c24
PP
540#endif /* USE_LOCALE_COLLATE */
541}
bbce6d69
PP
542
543/*
544 * Set up for a new numeric locale.
545 */
546void
8ac85365 547perl_new_numeric(char *newnum)
bbce6d69 548{
36477c24
PP
549#ifdef USE_LOCALE_NUMERIC
550
bbce6d69 551 if (! newnum) {
3280af22
NIS
552 if (PL_numeric_name) {
553 Safefree(PL_numeric_name);
554 PL_numeric_name = NULL;
555 PL_numeric_standard = TRUE;
556 PL_numeric_local = TRUE;
bbce6d69
PP
557 }
558 return;
559 }
560
3280af22
NIS
561 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
562 Safefree(PL_numeric_name);
563 PL_numeric_name = savepv(newnum);
564 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
565 PL_numeric_local = TRUE;
bbce6d69 566 }
36477c24
PP
567
568#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
569}
570
571void
8ac85365 572perl_set_numeric_standard(void)
bbce6d69 573{
5f05dabc
PP
574#ifdef USE_LOCALE_NUMERIC
575
3280af22 576 if (! PL_numeric_standard) {
bbce6d69 577 setlocale(LC_NUMERIC, "C");
3280af22
NIS
578 PL_numeric_standard = TRUE;
579 PL_numeric_local = FALSE;
bbce6d69 580 }
5f05dabc
PP
581
582#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
583}
584
585void
8ac85365 586perl_set_numeric_local(void)
bbce6d69 587{
5f05dabc
PP
588#ifdef USE_LOCALE_NUMERIC
589
3280af22
NIS
590 if (! PL_numeric_local) {
591 setlocale(LC_NUMERIC, PL_numeric_name);
592 PL_numeric_standard = FALSE;
593 PL_numeric_local = TRUE;
bbce6d69 594 }
bbce6d69 595
36477c24 596#endif /* USE_LOCALE_NUMERIC */
5f05dabc 597}
36477c24 598
bbce6d69 599
36477c24
PP
600/*
601 * Initialize locale awareness.
602 */
f0c5b223 603int
8ac85365 604perl_init_i18nl10n(int printwarn)
f0c5b223
TB
605{
606 int ok = 1;
607 /* returns
608 * 1 = set ok or not applicable,
609 * 0 = fallback to C locale,
610 * -1 = fallback to C locale failed
611 */
bbce6d69 612
36477c24 613#ifdef USE_LOCALE
bbce6d69 614
36477c24 615#ifdef USE_LOCALE_CTYPE
bbce6d69 616 char *curctype = NULL;
36477c24
PP
617#endif /* USE_LOCALE_CTYPE */
618#ifdef USE_LOCALE_COLLATE
bbce6d69 619 char *curcoll = NULL;
36477c24
PP
620#endif /* USE_LOCALE_COLLATE */
621#ifdef USE_LOCALE_NUMERIC
bbce6d69 622 char *curnum = NULL;
36477c24 623#endif /* USE_LOCALE_NUMERIC */
76e3520e
GS
624 char *lc_all = PerlEnv_getenv("LC_ALL");
625 char *lang = PerlEnv_getenv("LANG");
bbce6d69 626 bool setlocale_failure = FALSE;
f0c5b223 627
02b32252
CS
628#ifdef LOCALE_ENVIRON_REQUIRED
629
630 /*
631 * Ultrix setlocale(..., "") fails if there are no environment
632 * variables from which to get a locale name.
633 */
634
635 bool done = FALSE;
636
637#ifdef LC_ALL
638 if (lang) {
639 if (setlocale(LC_ALL, ""))
640 done = TRUE;
641 else
642 setlocale_failure = TRUE;
643 }
644 if (!setlocale_failure)
645#endif /* LC_ALL */
646 {
647#ifdef USE_LOCALE_CTYPE
648 if (! (curctype = setlocale(LC_CTYPE,
76e3520e 649 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
02b32252
CS
650 ? "" : Nullch)))
651 setlocale_failure = TRUE;
652#endif /* USE_LOCALE_CTYPE */
653#ifdef USE_LOCALE_COLLATE
654 if (! (curcoll = setlocale(LC_COLLATE,
76e3520e 655 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
02b32252
CS
656 ? "" : Nullch)))
657 setlocale_failure = TRUE;
658#endif /* USE_LOCALE_COLLATE */
659#ifdef USE_LOCALE_NUMERIC
660 if (! (curnum = setlocale(LC_NUMERIC,
76e3520e 661 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
02b32252
CS
662 ? "" : Nullch)))
663 setlocale_failure = TRUE;
664#endif /* USE_LOCALE_NUMERIC */
665 }
666
667#else /* !LOCALE_ENVIRON_REQUIRED */
668
bbce6d69 669#ifdef LC_ALL
5f05dabc 670
bbce6d69
PP
671 if (! setlocale(LC_ALL, ""))
672 setlocale_failure = TRUE;
5f05dabc
PP
673 else {
674#ifdef USE_LOCALE_CTYPE
675 curctype = setlocale(LC_CTYPE, Nullch);
676#endif /* USE_LOCALE_CTYPE */
677#ifdef USE_LOCALE_COLLATE
678 curcoll = setlocale(LC_COLLATE, Nullch);
679#endif /* USE_LOCALE_COLLATE */
680#ifdef USE_LOCALE_NUMERIC
681 curnum = setlocale(LC_NUMERIC, Nullch);
682#endif /* USE_LOCALE_NUMERIC */
683 }
684
685#else /* !LC_ALL */
bbce6d69 686
36477c24 687#ifdef USE_LOCALE_CTYPE
5f05dabc 688 if (! (curctype = setlocale(LC_CTYPE, "")))
bbce6d69 689 setlocale_failure = TRUE;
36477c24
PP
690#endif /* USE_LOCALE_CTYPE */
691#ifdef USE_LOCALE_COLLATE
5f05dabc 692 if (! (curcoll = setlocale(LC_COLLATE, "")))
bbce6d69 693 setlocale_failure = TRUE;
36477c24
PP
694#endif /* USE_LOCALE_COLLATE */
695#ifdef USE_LOCALE_NUMERIC
5f05dabc 696 if (! (curnum = setlocale(LC_NUMERIC, "")))
bbce6d69 697 setlocale_failure = TRUE;
36477c24 698#endif /* USE_LOCALE_NUMERIC */
bbce6d69 699
5f05dabc
PP
700#endif /* LC_ALL */
701
02b32252
CS
702#endif /* !LOCALE_ENVIRON_REQUIRED */
703
5f05dabc
PP
704 if (setlocale_failure) {
705 char *p;
706 bool locwarn = (printwarn > 1 ||
707 printwarn &&
76e3520e 708 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)));
20cec16a 709
5f05dabc
PP
710 if (locwarn) {
711#ifdef LC_ALL
712
713 PerlIO_printf(PerlIO_stderr(),
714 "perl: warning: Setting locale failed.\n");
715
716#else /* !LC_ALL */
717
ef7eada9 718 PerlIO_printf(PerlIO_stderr(),
bbce6d69 719 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 720#ifdef USE_LOCALE_CTYPE
bbce6d69 721 if (! curctype)
5f05dabc 722 PerlIO_printf(PerlIO_stderr(), "LC_CTYPE ");
36477c24
PP
723#endif /* USE_LOCALE_CTYPE */
724#ifdef USE_LOCALE_COLLATE
bbce6d69 725 if (! curcoll)
5f05dabc 726 PerlIO_printf(PerlIO_stderr(), "LC_COLLATE ");
36477c24
PP
727#endif /* USE_LOCALE_COLLATE */
728#ifdef USE_LOCALE_NUMERIC
bbce6d69 729 if (! curnum)
5f05dabc 730 PerlIO_printf(PerlIO_stderr(), "LC_NUMERIC ");
36477c24 731#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
732 PerlIO_printf(PerlIO_stderr(), "\n");
733
5f05dabc
PP
734#endif /* LC_ALL */
735
760ac839 736 PerlIO_printf(PerlIO_stderr(),
bbce6d69 737 "perl: warning: Please check that your locale settings:\n");
ef7eada9
JH
738
739 PerlIO_printf(PerlIO_stderr(),
bbce6d69
PP
740 "\tLC_ALL = %c%s%c,\n",
741 lc_all ? '"' : '(',
742 lc_all ? lc_all : "unset",
743 lc_all ? '"' : ')');
5f05dabc
PP
744
745 {
746 char **e;
747 for (e = environ; *e; e++) {
748 if (strnEQ(*e, "LC_", 3)
749 && strnNE(*e, "LC_ALL=", 7)
750 && (p = strchr(*e, '=')))
751 PerlIO_printf(PerlIO_stderr(), "\t%.*s = \"%s\",\n",
fb73857a 752 (int)(p - *e), *e, p + 1);
5f05dabc
PP
753 }
754 }
755
ef7eada9 756 PerlIO_printf(PerlIO_stderr(),
bbce6d69 757 "\tLANG = %c%s%c\n",
5f05dabc 758 lang ? '"' : '(',
bbce6d69
PP
759 lang ? lang : "unset",
760 lang ? '"' : ')');
ef7eada9 761
bbce6d69
PP
762 PerlIO_printf(PerlIO_stderr(),
763 " are supported and installed on your system.\n");
5f05dabc 764 }
ef7eada9 765
5f05dabc
PP
766#ifdef LC_ALL
767
768 if (setlocale(LC_ALL, "C")) {
769 if (locwarn)
770 PerlIO_printf(PerlIO_stderr(),
771 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 772 ok = 0;
ef7eada9 773 }
5f05dabc
PP
774 else {
775 if (locwarn)
776 PerlIO_printf(PerlIO_stderr(),
777 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
778 ok = -1;
779 }
bbce6d69 780
5f05dabc
PP
781#else /* ! LC_ALL */
782
783 if (0
36477c24 784#ifdef USE_LOCALE_CTYPE
5f05dabc 785 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24
PP
786#endif /* USE_LOCALE_CTYPE */
787#ifdef USE_LOCALE_COLLATE
5f05dabc 788 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24
PP
789#endif /* USE_LOCALE_COLLATE */
790#ifdef USE_LOCALE_NUMERIC
5f05dabc 791 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 792#endif /* USE_LOCALE_NUMERIC */
5f05dabc
PP
793 )
794 {
795 if (locwarn)
bbce6d69 796 PerlIO_printf(PerlIO_stderr(),
5f05dabc
PP
797 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
798 ok = -1;
bbce6d69 799 }
5f05dabc 800
bbce6d69 801#endif /* ! LC_ALL */
5f05dabc
PP
802
803#ifdef USE_LOCALE_CTYPE
804 curctype = setlocale(LC_CTYPE, Nullch);
805#endif /* USE_LOCALE_CTYPE */
806#ifdef USE_LOCALE_COLLATE
807 curcoll = setlocale(LC_COLLATE, Nullch);
808#endif /* USE_LOCALE_COLLATE */
809#ifdef USE_LOCALE_NUMERIC
810 curnum = setlocale(LC_NUMERIC, Nullch);
811#endif /* USE_LOCALE_NUMERIC */
ef7eada9
JH
812 }
813
36477c24 814#ifdef USE_LOCALE_CTYPE
bbce6d69 815 perl_new_ctype(curctype);
36477c24 816#endif /* USE_LOCALE_CTYPE */
bbce6d69 817
36477c24 818#ifdef USE_LOCALE_COLLATE
bbce6d69 819 perl_new_collate(curcoll);
36477c24 820#endif /* USE_LOCALE_COLLATE */
bbce6d69 821
36477c24 822#ifdef USE_LOCALE_NUMERIC
bbce6d69 823 perl_new_numeric(curnum);
36477c24 824#endif /* USE_LOCALE_NUMERIC */
ef7eada9 825
36477c24 826#endif /* USE_LOCALE */
ef7eada9 827
f0c5b223
TB
828 return ok;
829}
830
bbce6d69
PP
831/* Backwards compatibility. */
832int
8ac85365 833perl_init_i18nl14n(int printwarn)
bbce6d69 834{
5f05dabc 835 return perl_init_i18nl10n(printwarn);
bbce6d69 836}
ef7eada9 837
36477c24 838#ifdef USE_LOCALE_COLLATE
ef7eada9 839
bbce6d69
PP
840/*
841 * mem_collxfrm() is a bit like strxfrm() but with two important
842 * differences. First, it handles embedded NULs. Second, it allocates
843 * a bit more memory than needed for the transformed data itself.
844 * The real transformed data begins at offset sizeof(collationix).
845 * Please see sv_collxfrm() to see how this is used.
846 */
847char *
8ac85365 848mem_collxfrm(const char *s, STRLEN len, STRLEN *xlen)
bbce6d69
PP
849{
850 char *xbuf;
76e3520e 851 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69
PP
852
853 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
854 /* the +1 is for the terminating NUL. */
855
3280af22 856 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
76e3520e 857 New(171, xbuf, xAlloc, char);
bbce6d69
PP
858 if (! xbuf)
859 goto bad;
860
3280af22
NIS
861 *(U32*)xbuf = PL_collation_ix;
862 xout = sizeof(PL_collation_ix);
bbce6d69
PP
863 for (xin = 0; xin < len; ) {
864 SSize_t xused;
865
866 for (;;) {
76e3520e 867 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69
PP
868 if (xused == -1)
869 goto bad;
76e3520e 870 if (xused < xAlloc - xout)
bbce6d69 871 break;
76e3520e
GS
872 xAlloc = (2 * xAlloc) + 1;
873 Renew(xbuf, xAlloc, char);
bbce6d69
PP
874 if (! xbuf)
875 goto bad;
876 }
ef7eada9 877
bbce6d69
PP
878 xin += strlen(s + xin) + 1;
879 xout += xused;
880
881 /* Embedded NULs are understood but silently skipped
882 * because they make no sense in locale collation. */
883 }
ef7eada9 884
bbce6d69 885 xbuf[xout] = '\0';
3280af22 886 *xlen = xout - sizeof(PL_collation_ix);
bbce6d69
PP
887 return xbuf;
888
889 bad:
890 Safefree(xbuf);
891 *xlen = 0;
892 return NULL;
ef7eada9
JH
893}
894
36477c24 895#endif /* USE_LOCALE_COLLATE */
bbce6d69 896
378cc40b 897void
2779dcf1 898fbm_compile(SV *sv, U32 flags /* not used yet */)
378cc40b 899{
a687059c
LW
900 register unsigned char *s;
901 register unsigned char *table;
79072805
LW
902 register U32 i;
903 register U32 len = SvCUR(sv);
904 I32 rarest = 0;
905 U32 frequency = 256;
906
c277df42
IZ
907 sv_upgrade(sv, SVt_PVBM);
908 if (len > 255 || len == 0) /* TAIL might be on on a zero-length string. */
748a9306 909 return; /* can't have offsets that big */
02128f11
IZ
910 if (len > 2) {
911 Sv_Grow(sv,len + 258);
912 table = (unsigned char*)(SvPVX(sv) + len + 1);
913 s = table - 2;
914 for (i = 0; i < 256; i++) {
915 table[i] = len;
916 }
917 i = 0;
918 while (s >= (unsigned char*)(SvPVX(sv)))
919 {
920 if (table[*s] == len)
921 table[*s] = i;
922 s--,i++;
923 }
378cc40b 924 }
bbce6d69 925 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 926 SvVALID_on(sv);
378cc40b 927
463ee0b2 928 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69
PP
929 for (i = 0; i < len; i++) {
930 if (freq[s[i]] < frequency) {
931 rarest = i;
932 frequency = freq[s[i]];
378cc40b
LW
933 }
934 }
79072805
LW
935 BmRARE(sv) = s[rarest];
936 BmPREVIOUS(sv) = rarest;
760ac839 937 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW
938}
939
378cc40b 940char *
411d5715 941fbm_instr(unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
378cc40b 942{
a687059c 943 register unsigned char *s;
79072805
LW
944 register I32 tmp;
945 register I32 littlelen;
a687059c
LW
946 register unsigned char *little;
947 register unsigned char *table;
948 register unsigned char *olds;
949 register unsigned char *oldlittle;
378cc40b 950
79072805 951 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
a0d0e21e
LW
952 STRLEN len;
953 char *l = SvPV(littlestr,len);
c277df42 954 if (!len) {
02128f11
IZ
955 if (SvTAIL(littlestr)) { /* Can be only 0-len constant
956 substr => we can ignore SvVALID */
3280af22 957 if (PL_multiline) {
02128f11 958 char *t = "\n";
3fe6f2dc
MB
959 if ((s = (unsigned char*)ninstr((char*)big, (char*)bigend,
960 t, t + len))) {
961 return (char*)s;
962 }
02128f11 963 }
c277df42 964 if (bigend > big && bigend[-1] == '\n')
161b471a 965 return (char *)(bigend - 1);
c277df42 966 else
161b471a 967 return (char *) bigend;
c277df42 968 }
d48672a2 969 return (char*)big;
c277df42 970 }
a0d0e21e 971 return ninstr((char*)big,(char*)bigend, l, l + len);
d48672a2 972 }
378cc40b 973
79072805 974 littlelen = SvCUR(littlestr);
3280af22 975 if (SvTAIL(littlestr) && !PL_multiline) { /* tail anchored? */
0f85fab0
LW
976 if (littlelen > bigend - big)
977 return Nullch;
463ee0b2 978 little = (unsigned char*)SvPVX(littlestr);
bbce6d69 979 s = bigend - littlelen;
02128f11
IZ
980 if (s > big
981 && bigend[-1] == '\n'
982 && s[-1] == *little && memEQ((char*)s - 1,(char*)little,littlelen))
983 return (char*)s - 1; /* how sweet it is */
984 else if (*s == *little && memEQ((char*)s,(char*)little,littlelen))
bbce6d69 985 return (char*)s; /* how sweet it is */
02128f11
IZ
986 return Nullch;
987 }
988 if (littlelen <= 2) {
989 unsigned char c1 = (unsigned char)SvPVX(littlestr)[0];
990 unsigned char c2 = (unsigned char)SvPVX(littlestr)[1];
991 /* This may do extra comparisons if littlelen == 2, but this
992 should be hidden in the noise since we do less indirection. */
993
994 s = big;
995 bigend -= littlelen;
996 while (s <= bigend) {
997 if (s[0] == c1
998 && (littlelen == 1 || s[1] == c2)
999 && (!SvTAIL(littlestr)
1000 || s == bigend
1001 || s[littlelen] == '\n')) /* Automatically multiline */
3fe6f2dc
MB
1002 {
1003 return (char*)s;
1004 }
02128f11 1005 s++;
a687059c 1006 }
bbce6d69 1007 return Nullch;
a687059c 1008 }
463ee0b2 1009 table = (unsigned char*)(SvPVX(littlestr) + littlelen + 1);
62b28dd9
LW
1010 if (--littlelen >= bigend - big)
1011 return Nullch;
1012 s = big + littlelen;
a687059c 1013 oldlittle = little = table - 2;
bbce6d69
PP
1014 if (s < bigend) {
1015 top2:
1016 /*SUPPRESS 560*/
1017 if (tmp = table[*s]) {
62b28dd9 1018#ifdef POINTERRIGOR
bbce6d69
PP
1019 if (bigend - s > tmp) {
1020 s += tmp;
1021 goto top2;
1022 }
62b28dd9 1023#else
bbce6d69
PP
1024 if ((s += tmp) < bigend)
1025 goto top2;
62b28dd9 1026#endif
bbce6d69 1027 return Nullch;
a687059c 1028 }
bbce6d69
PP
1029 else {
1030 tmp = littlelen; /* less expensive than calling strncmp() */
1031 olds = s;
1032 while (tmp--) {
1033 if (*--s == *--little)
1034 continue;
c277df42 1035 differ:
bbce6d69
PP
1036 s = olds + 1; /* here we pay the price for failure */
1037 little = oldlittle;
1038 if (s < bigend) /* fake up continue to outer loop */
62b28dd9 1039 goto top2;
62b28dd9 1040 return Nullch;
a687059c 1041 }
c277df42
IZ
1042 if (SvTAIL(littlestr) /* automatically multiline */
1043 && olds + 1 != bigend
1044 && olds[1] != '\n')
1045 goto differ;
bbce6d69 1046 return (char *)s;
378cc40b
LW
1047 }
1048 }
1049 return Nullch;
1050}
1051
c277df42
IZ
1052/* start_shift, end_shift are positive quantities which give offsets
1053 of ends of some substring of bigstr.
1054 If `last' we want the last occurence.
1055 old_posp is the way of communication between consequent calls if
1056 the next call needs to find the .
1057 The initial *old_posp should be -1.
1058 Note that we do not take into account SvTAIL, so it may give wrong
1059 positives if _ALL flag is set.
1060 */
1061
378cc40b 1062char *
c277df42 1063screaminstr(SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1064{
5c0ca799 1065 dTHR;
a687059c
LW
1066 register unsigned char *s, *x;
1067 register unsigned char *big;
79072805
LW
1068 register I32 pos;
1069 register I32 previous;
1070 register I32 first;
a687059c 1071 register unsigned char *little;
c277df42 1072 register I32 stop_pos;
a687059c 1073 register unsigned char *littleend;
c277df42 1074 I32 found = 0;
378cc40b 1075
c277df42 1076 if (*old_posp == -1
3280af22
NIS
1077 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
1078 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0))
378cc40b 1079 return Nullch;
463ee0b2 1080 little = (unsigned char *)(SvPVX(littlestr));
79072805 1081 littleend = little + SvCUR(littlestr);
378cc40b 1082 first = *little++;
c277df42 1083 /* The value of pos we can start at: */
79072805 1084 previous = BmPREVIOUS(littlestr);
463ee0b2 1085 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ
1086 /* The value of pos we can stop at: */
1087 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
1088 if (previous + start_shift > stop_pos) return Nullch;
1089 while (pos < previous + start_shift) {
3280af22 1090 if (!(pos += PL_screamnext[pos]))
378cc40b
LW
1091 return Nullch;
1092 }
de3bb511 1093#ifdef POINTERRIGOR
bbce6d69 1094 do {
ef64f398 1095 if (pos >= stop_pos) break;
bbce6d69
PP
1096 if (big[pos-previous] != first)
1097 continue;
1098 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1099 if (*s++ != *x++) {
1100 s--;
1101 break;
de3bb511 1102 }
bbce6d69 1103 }
c277df42
IZ
1104 if (s == littleend) {
1105 *old_posp = pos;
1106 if (!last) return (char *)(big+pos-previous);
1107 found = 1;
1108 }
bbce6d69 1109 } while ( pos += screamnext[pos] );
c277df42 1110 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW
1111#else /* !POINTERRIGOR */
1112 big -= previous;
bbce6d69 1113 do {
ef64f398 1114 if (pos >= stop_pos) break;
bbce6d69
PP
1115 if (big[pos] != first)
1116 continue;
1117 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1118 if (*s++ != *x++) {
1119 s--;
1120 break;
378cc40b 1121 }
bbce6d69 1122 }
c277df42
IZ
1123 if (s == littleend) {
1124 *old_posp = pos;
1125 if (!last) return (char *)(big+pos);
1126 found = 1;
1127 }
3280af22 1128 } while ( pos += PL_screamnext[pos] );
c277df42 1129 return (last && found) ? (char *)(big+(*old_posp)) : Nullch;
de3bb511 1130#endif /* POINTERRIGOR */
8d063cd8
LW
1131}
1132
79072805 1133I32
8ac85365 1134ibcmp(char *s1, char *s2, register I32 len)
79072805 1135{
bbce6d69
PP
1136 register U8 *a = (U8 *)s1;
1137 register U8 *b = (U8 *)s2;
79072805 1138 while (len--) {
bbce6d69
PP
1139 if (*a != *b && *a != fold[*b])
1140 return 1;
1141 a++,b++;
1142 }
1143 return 0;
1144}
1145
1146I32
8ac85365 1147ibcmp_locale(char *s1, char *s2, register I32 len)
bbce6d69
PP
1148{
1149 register U8 *a = (U8 *)s1;
1150 register U8 *b = (U8 *)s2;
1151 while (len--) {
1152 if (*a != *b && *a != fold_locale[*b])
1153 return 1;
1154 a++,b++;
79072805
LW
1155 }
1156 return 0;
1157}
1158
8d063cd8
LW
1159/* copy a string to a safe spot */
1160
1161char *
8ac85365 1162savepv(char *sv)
8d063cd8 1163{
a687059c 1164 register char *newaddr;
8d063cd8 1165
79072805
LW
1166 New(902,newaddr,strlen(sv)+1,char);
1167 (void)strcpy(newaddr,sv);
8d063cd8
LW
1168 return newaddr;
1169}
1170
a687059c
LW
1171/* same thing but with a known length */
1172
1173char *
8ac85365 1174savepvn(char *sv, register I32 len)
a687059c
LW
1175{
1176 register char *newaddr;
1177
1178 New(903,newaddr,len+1,char);
79072805 1179 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW
1180 newaddr[len] = '\0'; /* is now */
1181 return newaddr;
1182}
1183
fc36a67e
PP
1184/* the SV for form() and mess() is not kept in an arena */
1185
76e3520e 1186STATIC SV *
8ac85365 1187mess_alloc(void)
fc36a67e
PP
1188{
1189 SV *sv;
1190 XPVMG *any;
1191
1192 /* Create as PVMG now, to avoid any upgrading later */
1193 New(905, sv, 1, SV);
1194 Newz(905, any, 1, XPVMG);
1195 SvFLAGS(sv) = SVt_PVMG;
1196 SvANY(sv) = (void*)any;
1197 SvREFCNT(sv) = 1 << 30; /* practically infinite */
1198 return sv;
1199}
1200
8990e307 1201char *
46fc3d4c 1202form(const char* pat, ...)
8990e307 1203{
46fc3d4c 1204 va_list args;
46fc3d4c 1205 va_start(args, pat);
3280af22
NIS
1206 if (!PL_mess_sv)
1207 PL_mess_sv = mess_alloc();
1208 sv_vsetpvfn(PL_mess_sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
46fc3d4c 1209 va_end(args);
3280af22 1210 return SvPVX(PL_mess_sv);
46fc3d4c 1211}
a687059c 1212
46fc3d4c 1213char *
8ac85365 1214mess(const char *pat, va_list *args)
46fc3d4c
PP
1215{
1216 SV *sv;
1217 static char dgd[] = " during global destruction.\n";
1218
3280af22
NIS
1219 if (!PL_mess_sv)
1220 PL_mess_sv = mess_alloc();
1221 sv = PL_mess_sv;
fc36a67e 1222 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1223 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1224 dTHR;
3280af22 1225 if (PL_dirty)
46fc3d4c 1226 sv_catpv(sv, dgd);
2304df62 1227 else {
3280af22 1228 if (PL_curcop->cop_line)
fc36a67e 1229 sv_catpvf(sv, " at %_ line %ld",
3280af22
NIS
1230 GvSV(PL_curcop->cop_filegv), (long)PL_curcop->cop_line);
1231 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1232 bool line_mode = (RsSIMPLE(PL_rs) &&
1233 SvLEN(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
46fc3d4c 1234 sv_catpvf(sv, ", <%s> %s %ld",
3280af22 1235 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
46fc3d4c 1236 line_mode ? "line" : "chunk",
3280af22 1237 (long)IoLINES(GvIOp(PL_last_in_gv)));
2304df62 1238 }
46fc3d4c 1239 sv_catpv(sv, ".\n");
a687059c 1240 }
a687059c 1241 }
46fc3d4c 1242 return SvPVX(sv);
a687059c
LW
1243}
1244
36477c24 1245OP *
71be2cbc 1246die(const char* pat, ...)
36477c24 1247{
5dc0d613 1248 dTHR;
36477c24
PP
1249 va_list args;
1250 char *message;
3280af22 1251 int was_in_eval = PL_in_eval;
36477c24
PP
1252 HV *stash;
1253 GV *gv;
1254 CV *cv;
1255
57d3b86d 1256#ifdef USE_THREADS
199100c8
MB
1257 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
1258 "%p: die: curstack = %p, mainstack = %p\n",
1259 thr, curstack, mainstack));
57d3b86d 1260#endif /* USE_THREADS */
36477c24 1261
36477c24 1262 va_start(args, pat);
4e6ea2c3 1263 message = pat ? mess(pat, &args) : Nullch;
36477c24
PP
1264 va_end(args);
1265
57d3b86d 1266#ifdef USE_THREADS
199100c8
MB
1267 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
1268 "%p: die: message = %s\ndiehook = %p\n",
1269 thr, message, diehook));
57d3b86d 1270#endif /* USE_THREADS */
3280af22 1271 if (PL_diehook) {
1738f5c4 1272 /* sv_2cv might call croak() */
3280af22 1273 SV *olddiehook = PL_diehook;
1738f5c4 1274 ENTER;
3280af22
NIS
1275 SAVESPTR(PL_diehook);
1276 PL_diehook = Nullsv;
1738f5c4
CS
1277 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1278 LEAVE;
1279 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1280 dSP;
774d564b
PP
1281 SV *msg;
1282
1283 ENTER;
4e6ea2c3
GS
1284 if(message) {
1285 msg = newSVpv(message, 0);
1286 SvREADONLY_on(msg);
1287 SAVEFREESV(msg);
1288 }
1289 else {
1290 msg = ERRSV;
1291 }
1738f5c4 1292
e788e7d3 1293 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1294 PUSHMARK(SP);
1738f5c4
CS
1295 XPUSHs(msg);
1296 PUTBACK;
1297 perl_call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1298 POPSTACK;
774d564b 1299 LEAVE;
1738f5c4 1300 }
36477c24
PP
1301 }
1302
3280af22 1303 PL_restartop = die_where(message);
57d3b86d 1304#ifdef USE_THREADS
d9f997d7 1305 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
7c06b590
GS
1306 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
1307 thr, restartop, was_in_eval, top_env));
57d3b86d 1308#endif /* USE_THREADS */
3280af22 1309 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1310 JMPENV_JUMP(3);
3280af22 1311 return PL_restartop;
36477c24
PP
1312}
1313
79072805 1314void
71be2cbc 1315croak(const char* pat, ...)
a687059c 1316{
11343788 1317 dTHR;
a687059c 1318 va_list args;
de3bb511 1319 char *message;
748a9306
LW
1320 HV *stash;
1321 GV *gv;
1322 CV *cv;
a687059c 1323
8990e307 1324 va_start(args, pat);
2304df62 1325 message = mess(pat, &args);
a687059c 1326 va_end(args);
11343788 1327#ifdef USE_THREADS
d9f997d7 1328 DEBUG_L(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
11343788 1329#endif /* USE_THREADS */
3280af22 1330 if (PL_diehook) {
1738f5c4 1331 /* sv_2cv might call croak() */
3280af22 1332 SV *olddiehook = PL_diehook;
1738f5c4 1333 ENTER;
3280af22
NIS
1334 SAVESPTR(PL_diehook);
1335 PL_diehook = Nullsv;
20cec16a 1336 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS
1337 LEAVE;
1338 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1339 dSP;
774d564b
PP
1340 SV *msg;
1341
1342 ENTER;
1343 msg = newSVpv(message, 0);
1344 SvREADONLY_on(msg);
1345 SAVEFREESV(msg);
20cec16a 1346
e788e7d3 1347 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1348 PUSHMARK(SP);
1738f5c4 1349 XPUSHs(msg);
20cec16a
PP
1350 PUTBACK;
1351 perl_call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1352 POPSTACK;
774d564b 1353 LEAVE;
20cec16a 1354 }
748a9306 1355 }
3280af22
NIS
1356 if (PL_in_eval) {
1357 PL_restartop = die_where(message);
6224f72b 1358 JMPENV_JUMP(3);
a0d0e21e 1359 }
760ac839
LW
1360 PerlIO_puts(PerlIO_stderr(),message);
1361 (void)PerlIO_flush(PerlIO_stderr());
f86702cc 1362 my_failure_exit();
a687059c
LW
1363}
1364
8990e307 1365void
71be2cbc 1366warn(const char* pat,...)
a687059c
LW
1367{
1368 va_list args;
de3bb511 1369 char *message;
748a9306
LW
1370 HV *stash;
1371 GV *gv;
1372 CV *cv;
a687059c 1373
8990e307 1374 va_start(args, pat);
2304df62 1375 message = mess(pat, &args);
a687059c
LW
1376 va_end(args);
1377
3280af22 1378 if (PL_warnhook) {
1738f5c4 1379 /* sv_2cv might call warn() */
11343788 1380 dTHR;
3280af22 1381 SV *oldwarnhook = PL_warnhook;
1738f5c4 1382 ENTER;
3280af22
NIS
1383 SAVESPTR(PL_warnhook);
1384 PL_warnhook = Nullsv;
20cec16a 1385 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS
1386 LEAVE;
1387 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1388 dSP;
774d564b
PP
1389 SV *msg;
1390
1391 ENTER;
1392 msg = newSVpv(message, 0);
1393 SvREADONLY_on(msg);
1394 SAVEFREESV(msg);
1395
e788e7d3 1396 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1397 PUSHMARK(SP);
774d564b 1398 XPUSHs(msg);
20cec16a
PP
1399 PUTBACK;
1400 perl_call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1401 POPSTACK;
774d564b 1402 LEAVE;
20cec16a
PP
1403 return;
1404 }
748a9306 1405 }
20cec16a 1406 PerlIO_puts(PerlIO_stderr(),message);
a687059c 1407#ifdef LEAKTEST
8c52afec
IZ
1408 DEBUG_L(*message == '!'
1409 ? (xstat(message[1]=='!'
1410 ? (message[2]=='!' ? 2 : 1)
1411 : 0)
1412 , 0)
1413 : 0);
a687059c 1414#endif
20cec16a 1415 (void)PerlIO_flush(PerlIO_stderr());
a687059c 1416}
8d063cd8 1417
a0d0e21e 1418#ifndef VMS /* VMS' my_setenv() is in VMS.c */
3e3baf6d 1419#ifndef WIN32
8d063cd8 1420void
8ac85365 1421my_setenv(char *nam, char *val)
8d063cd8 1422{
79072805 1423 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1424
3280af22 1425 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW
1426 I32 j;
1427 I32 max;
fe14fcc3
LW
1428 char **tmpenv;
1429
de3bb511 1430 /*SUPPRESS 530*/
fe14fcc3
LW
1431 for (max = i; environ[max]; max++) ;
1432 New(901,tmpenv, max+2, char*);
1433 for (j=0; j<max; j++) /* copy environment */
a0d0e21e 1434 tmpenv[j] = savepv(environ[j]);
fe14fcc3
LW
1435 tmpenv[max] = Nullch;
1436 environ = tmpenv; /* tell exec where it is now */
1437 }
a687059c 1438 if (!val) {
e5ebf479 1439 Safefree(environ[i]);
a687059c
LW
1440 while (environ[i]) {
1441 environ[i] = environ[i+1];
1442 i++;
1443 }
1444 return;
1445 }
8d063cd8 1446 if (!environ[i]) { /* does not exist yet */
fe14fcc3 1447 Renew(environ, i+2, char*); /* just expand it a bit */
8d063cd8
LW
1448 environ[i+1] = Nullch; /* make sure it's null terminated */
1449 }
fe14fcc3
LW
1450 else
1451 Safefree(environ[i]);
a687059c 1452 New(904, environ[i], strlen(nam) + strlen(val) + 2, char);
62b28dd9 1453#ifndef MSDOS
a687059c 1454 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
62b28dd9
LW
1455#else
1456 /* MS-DOS requires environment variable names to be in uppercase */
fe14fcc3
LW
1457 /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but
1458 * some utilities and applications may break because they only look
1459 * for upper case strings. (Fixed strupr() bug here.)]
1460 */
1461 strcpy(environ[i],nam); strupr(environ[i]);
62b28dd9
LW
1462 (void)sprintf(environ[i] + strlen(nam),"=%s",val);
1463#endif /* MSDOS */
8d063cd8
LW
1464}
1465
3e3baf6d 1466#else /* if WIN32 */
68dc0745
PP
1467
1468void
4e35701f 1469my_setenv(char *nam,char *val)
68dc0745 1470{
3e3baf6d
TB
1471
1472#ifdef USE_WIN32_RTL_ENV
1473
68dc0745
PP
1474 register char *envstr;
1475 STRLEN namlen = strlen(nam);
3e3baf6d
TB
1476 STRLEN vallen;
1477 char *oldstr = environ[setenv_getix(nam)];
1478
1479 /* putenv() has totally broken semantics in both the Borland
1480 * and Microsoft CRTLs. They either store the passed pointer in
1481 * the environment without making a copy, or make a copy and don't
1482 * free it. And on top of that, they dont free() old entries that
1483 * are being replaced/deleted. This means the caller must
1484 * free any old entries somehow, or we end up with a memory
1485 * leak every time my_setenv() is called. One might think
1486 * one could directly manipulate environ[], like the UNIX code
1487 * above, but direct changes to environ are not allowed when
1488 * calling putenv(), since the RTLs maintain an internal
1489 * *copy* of environ[]. Bad, bad, *bad* stink.
1490 * GSAR 97-06-07
1491 */
68dc0745 1492
3e3baf6d
TB
1493 if (!val) {
1494 if (!oldstr)
1495 return;
1496 val = "";
1497 vallen = 0;
1498 }
1499 else
1500 vallen = strlen(val);
fc36a67e 1501 New(904, envstr, namlen + vallen + 3, char);
68dc0745 1502 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 1503 (void)PerlEnv_putenv(envstr);
3e3baf6d
TB
1504 if (oldstr)
1505 Safefree(oldstr);
1506#ifdef _MSC_VER
1507 Safefree(envstr); /* MSVCRT leaks without this */
1508#endif
1509
1510#else /* !USE_WIN32_RTL_ENV */
1511
1512 /* The sane way to deal with the environment.
1513 * Has these advantages over putenv() & co.:
1514 * * enables us to store a truly empty value in the
1515 * environment (like in UNIX).
1516 * * we don't have to deal with RTL globals, bugs and leaks.
1517 * * Much faster.
1518 * Why you may want to enable USE_WIN32_RTL_ENV:
1519 * * environ[] and RTL functions will not reflect changes,
1520 * which might be an issue if extensions want to access
1521 * the env. via RTL. This cuts both ways, since RTL will
1522 * not see changes made by extensions that call the Win32
1523 * functions directly, either.
1524 * GSAR 97-06-07
1525 */
1526 SetEnvironmentVariable(nam,val);
1527
1528#endif
1529}
1530
1531#endif /* WIN32 */
1532
1533I32
8ac85365 1534setenv_getix(char *nam)
3e3baf6d
TB
1535{
1536 register I32 i, len = strlen(nam);
1537
1538 for (i = 0; environ[i]; i++) {
1539 if (
1540#ifdef WIN32
1541 strnicmp(environ[i],nam,len) == 0
1542#else
1543 strnEQ(environ[i],nam,len)
1544#endif
1545 && environ[i][len] == '=')
1546 break; /* strnEQ must come first to avoid */
1547 } /* potential SEGV's */
1548 return i;
68dc0745
PP
1549}
1550
a0d0e21e 1551#endif /* !VMS */
378cc40b 1552
16d20bd9 1553#ifdef UNLINK_ALL_VERSIONS
79072805 1554I32
378cc40b
LW
1555unlnk(f) /* unlink all versions of a file */
1556char *f;
1557{
79072805 1558 I32 i;
378cc40b 1559
6ad3d225 1560 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW
1561 return i ? 0 : -1;
1562}
1563#endif
1564
85e6fe83 1565#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 1566char *
4e35701f 1567my_bcopy(register char *from,register char *to,register I32 len)
378cc40b
LW
1568{
1569 char *retval = to;
1570
7c0587c8
LW
1571 if (from - to >= 0) {
1572 while (len--)
1573 *to++ = *from++;
1574 }
1575 else {
1576 to += len;
1577 from += len;
1578 while (len--)
faf8582f 1579 *(--to) = *(--from);
7c0587c8 1580 }
378cc40b
LW
1581 return retval;
1582}
ffed7fef 1583#endif
378cc40b 1584
fc36a67e
PP
1585#ifndef HAS_MEMSET
1586void *
1587my_memset(loc,ch,len)
1588register char *loc;
1589register I32 ch;
1590register I32 len;
1591{
1592 char *retval = loc;
1593
1594 while (len--)
1595 *loc++ = ch;
1596 return retval;
1597}
1598#endif
1599
7c0587c8 1600#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 1601char *
7c0587c8 1602my_bzero(loc,len)
378cc40b 1603register char *loc;
79072805 1604register I32 len;
378cc40b
LW
1605{
1606 char *retval = loc;
1607
1608 while (len--)
1609 *loc++ = 0;
1610 return retval;
1611}
1612#endif
7c0587c8 1613
36477c24 1614#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 1615I32
7c0587c8 1616my_memcmp(s1,s2,len)
36477c24
PP
1617char *s1;
1618char *s2;
79072805 1619register I32 len;
7c0587c8 1620{
36477c24
PP
1621 register U8 *a = (U8 *)s1;
1622 register U8 *b = (U8 *)s2;
79072805 1623 register I32 tmp;
7c0587c8
LW
1624
1625 while (len--) {
36477c24 1626 if (tmp = *a++ - *b++)
7c0587c8
LW
1627 return tmp;
1628 }
1629 return 0;
1630}
36477c24 1631#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 1632
fe14fcc3 1633#ifndef HAS_VPRINTF
a687059c 1634
85e6fe83 1635#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1636char *
1637#else
1638int
1639#endif
1640vsprintf(dest, pat, args)
71be2cbc
PP
1641char *dest;
1642const char *pat;
1643char *args;
a687059c
LW
1644{
1645 FILE fakebuf;
1646
1647 fakebuf._ptr = dest;
1648 fakebuf._cnt = 32767;
35c8bce7
LW
1649#ifndef _IOSTRG
1650#define _IOSTRG 0
1651#endif
a687059c
LW
1652 fakebuf._flag = _IOWRT|_IOSTRG;
1653 _doprnt(pat, args, &fakebuf); /* what a kludge */
1654 (void)putc('\0', &fakebuf);
85e6fe83 1655#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1656 return(dest);
1657#else
1658 return 0; /* perl doesn't use return value */
1659#endif
1660}
1661
fe14fcc3 1662#endif /* HAS_VPRINTF */
a687059c
LW
1663
1664#ifdef MYSWAP
ffed7fef 1665#if BYTEORDER != 0x4321
a687059c 1666short
748a9306 1667my_swap(short s)
a687059c
LW
1668{
1669#if (BYTEORDER & 1) == 0
1670 short result;
1671
1672 result = ((s & 255) << 8) + ((s >> 8) & 255);
1673 return result;
1674#else
1675 return s;
1676#endif
1677}
1678
1679long
748a9306 1680my_htonl(long l)
a687059c
LW
1681{
1682 union {
1683 long result;
ffed7fef 1684 char c[sizeof(long)];
a687059c
LW
1685 } u;
1686
ffed7fef 1687#if BYTEORDER == 0x1234
a687059c
LW
1688 u.c[0] = (l >> 24) & 255;
1689 u.c[1] = (l >> 16) & 255;
1690 u.c[2] = (l >> 8) & 255;
1691 u.c[3] = l & 255;
1692 return u.result;
1693#else
ffed7fef 1694#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1695 croak("Unknown BYTEORDER\n");
a687059c 1696#else
79072805
LW
1697 register I32 o;
1698 register I32 s;
a687059c 1699
ffed7fef
LW
1700 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1701 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW
1702 }
1703 return u.result;
1704#endif
1705#endif
1706}
1707
1708long
748a9306 1709my_ntohl(long l)
a687059c
LW
1710{
1711 union {
1712 long l;
ffed7fef 1713 char c[sizeof(long)];
a687059c
LW
1714 } u;
1715
ffed7fef 1716#if BYTEORDER == 0x1234
a687059c
LW
1717 u.c[0] = (l >> 24) & 255;
1718 u.c[1] = (l >> 16) & 255;
1719 u.c[2] = (l >> 8) & 255;
1720 u.c[3] = l & 255;
1721 return u.l;
1722#else
ffed7fef 1723#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1724 croak("Unknown BYTEORDER\n");
a687059c 1725#else
79072805
LW
1726 register I32 o;
1727 register I32 s;
a687059c
LW
1728
1729 u.l = l;
1730 l = 0;
ffed7fef
LW
1731 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1732 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW
1733 }
1734 return l;
1735#endif
1736#endif
1737}
1738
ffed7fef 1739#endif /* BYTEORDER != 0x4321 */
988174c1
LW
1740#endif /* MYSWAP */
1741
1742/*
1743 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
1744 * If these functions are defined,
1745 * the BYTEORDER is neither 0x1234 nor 0x4321.
1746 * However, this is not assumed.
1747 * -DWS
1748 */
1749
1750#define HTOV(name,type) \
1751 type \
1752 name (n) \
1753 register type n; \
1754 { \
1755 union { \
1756 type value; \
1757 char c[sizeof(type)]; \
1758 } u; \
79072805
LW
1759 register I32 i; \
1760 register I32 s; \
988174c1
LW
1761 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1762 u.c[i] = (n >> s) & 0xFF; \
1763 } \
1764 return u.value; \
1765 }
1766
1767#define VTOH(name,type) \
1768 type \
1769 name (n) \
1770 register type n; \
1771 { \
1772 union { \
1773 type value; \
1774 char c[sizeof(type)]; \
1775 } u; \
79072805
LW
1776 register I32 i; \
1777 register I32 s; \
988174c1
LW
1778 u.value = n; \
1779 n = 0; \
1780 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1781 n += (u.c[i] & 0xFF) << s; \
1782 } \
1783 return n; \
1784 }
1785
1786#if defined(HAS_HTOVS) && !defined(htovs)
1787HTOV(htovs,short)
1788#endif
1789#if defined(HAS_HTOVL) && !defined(htovl)
1790HTOV(htovl,long)
1791#endif
1792#if defined(HAS_VTOHS) && !defined(vtohs)
1793VTOH(vtohs,short)
1794#endif
1795#if defined(HAS_VTOHL) && !defined(vtohl)
1796VTOH(vtohl,long)
1797#endif
a687059c 1798
5f05dabc
PP
1799 /* VMS' my_popen() is in VMS.c, same with OS/2. */
1800#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS)
760ac839 1801PerlIO *
8ac85365 1802my_popen(char *cmd, char *mode)
a687059c
LW
1803{
1804 int p[2];
8ac85365 1805 register I32 This, that;
79072805
LW
1806 register I32 pid;
1807 SV *sv;
1738f5c4 1808 I32 doexec = strNE(cmd,"-");
a687059c 1809
ddcf38b7
IZ
1810#ifdef OS2
1811 if (doexec) {
1812 return my_syspopen(cmd,mode);
1813 }
1814#endif
8ac85365
NIS
1815 This = (*mode == 'w');
1816 that = !This;
3280af22 1817 if (doexec && PL_tainting) {
bbce6d69
PP
1818 taint_env();
1819 taint_proper("Insecure %s%s", "EXEC");
d48672a2 1820 }
c2267164
IZ
1821 if (PerlProc_pipe(p) < 0)
1822 return Nullfp;
a687059c
LW
1823 while ((pid = (doexec?vfork():fork())) < 0) {
1824 if (errno != EAGAIN) {
6ad3d225 1825 PerlLIO_close(p[This]);
a687059c 1826 if (!doexec)
463ee0b2 1827 croak("Can't fork");
a687059c
LW
1828 return Nullfp;
1829 }
1830 sleep(5);
1831 }
1832 if (pid == 0) {
79072805
LW
1833 GV* tmpgv;
1834
30ac6d9b
GS
1835#undef THIS
1836#undef THAT
a687059c 1837#define THIS that
8ac85365 1838#define THAT This
6ad3d225 1839 PerlLIO_close(p[THAT]);
a687059c 1840 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS
1841 PerlLIO_dup2(p[THIS], *mode == 'r');
1842 PerlLIO_close(p[THIS]);
a687059c
LW
1843 }
1844 if (doexec) {
a0d0e21e 1845#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW
1846 int fd;
1847
1848#ifndef NOFILE
1849#define NOFILE 20
1850#endif
d48672a2 1851 for (fd = maxsysfd + 1; fd < NOFILE; fd++)
6ad3d225 1852 PerlLIO_close(fd);
ae986130 1853#endif
a687059c 1854 do_exec(cmd); /* may or may not use the shell */
6ad3d225 1855 PerlProc__exit(1);
a687059c 1856 }
de3bb511 1857 /*SUPPRESS 560*/
85e6fe83 1858 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
1e422769 1859 sv_setiv(GvSV(tmpgv), (IV)getpid());
3280af22
NIS
1860 PL_forkprocess = 0;
1861 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW
1862 return Nullfp;
1863#undef THIS
1864#undef THAT
1865 }
62b28dd9 1866 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 1867 PerlLIO_close(p[that]);
8ac85365 1868 if (p[that] < p[This]) {
6ad3d225
GS
1869 PerlLIO_dup2(p[This], p[that]);
1870 PerlLIO_close(p[This]);
8ac85365 1871 p[This] = p[that];
62b28dd9 1872 }
3280af22 1873 sv = *av_fetch(PL_fdpid,p[This],TRUE);
a0d0e21e 1874 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 1875 SvIVX(sv) = pid;
3280af22 1876 PL_forkprocess = pid;
8ac85365 1877 return PerlIO_fdopen(p[This], mode);
a687059c 1878}
7c0587c8 1879#else
55497cff 1880#if defined(atarist) || defined(DJGPP)
7c0587c8 1881FILE *popen();
760ac839 1882PerlIO *
79072805 1883my_popen(cmd,mode)
7c0587c8
LW
1884char *cmd;
1885char *mode;
1886{
760ac839 1887 /* Needs work for PerlIO ! */
55497cff
PP
1888 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
1889 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW
1890}
1891#endif
1892
1893#endif /* !DOSISH */
a687059c 1894
748a9306 1895#ifdef DUMP_FDS
35ff7856
GS
1896void
1897dump_fds(char *s)
ae986130
LW
1898{
1899 int fd;
1900 struct stat tmpstatbuf;
1901
760ac839 1902 PerlIO_printf(PerlIO_stderr(),"%s", s);
ae986130 1903 for (fd = 0; fd < 32; fd++) {
6ad3d225 1904 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
760ac839 1905 PerlIO_printf(PerlIO_stderr()," %d",fd);
ae986130 1906 }
760ac839 1907 PerlIO_printf(PerlIO_stderr(),"\n");
ae986130 1908}
35ff7856 1909#endif /* DUMP_FDS */
ae986130 1910
fe14fcc3 1911#ifndef HAS_DUP2
fec02dd3 1912int
a687059c
LW
1913dup2(oldfd,newfd)
1914int oldfd;
1915int newfd;
1916{
a0d0e21e 1917#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD
1918 if (oldfd == newfd)
1919 return oldfd;
6ad3d225 1920 PerlLIO_close(newfd);
fec02dd3 1921 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 1922#else
fc36a67e
PP
1923#define DUP2_MAX_FDS 256
1924 int fdtmp[DUP2_MAX_FDS];
79072805 1925 I32 fdx = 0;
ae986130
LW
1926 int fd;
1927
fe14fcc3 1928 if (oldfd == newfd)
fec02dd3 1929 return oldfd;
6ad3d225 1930 PerlLIO_close(newfd);
fc36a67e 1931 /* good enough for low fd's... */
6ad3d225 1932 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 1933 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 1934 PerlLIO_close(fd);
fc36a67e
PP
1935 fd = -1;
1936 break;
1937 }
ae986130 1938 fdtmp[fdx++] = fd;
fc36a67e 1939 }
ae986130 1940 while (fdx > 0)
6ad3d225 1941 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 1942 return fd;
62b28dd9 1943#endif
a687059c
LW
1944}
1945#endif
1946
ff68c719
PP
1947
1948#ifdef HAS_SIGACTION
1949
1950Sighandler_t
8ac85365 1951rsignal(int signo, Sighandler_t handler)
ff68c719
PP
1952{
1953 struct sigaction act, oact;
1954
1955 act.sa_handler = handler;
1956 sigemptyset(&act.sa_mask);
1957 act.sa_flags = 0;
1958#ifdef SA_RESTART
1959 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
1960#endif
85264bed
CS
1961#ifdef SA_NOCLDWAIT
1962 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
1963 act.sa_flags |= SA_NOCLDWAIT;
1964#endif
ff68c719 1965 if (sigaction(signo, &act, &oact) == -1)
36477c24 1966 return SIG_ERR;
ff68c719 1967 else
36477c24 1968 return oact.sa_handler;
ff68c719
PP
1969}
1970
1971Sighandler_t
8ac85365 1972rsignal_state(int signo)
ff68c719
PP
1973{
1974 struct sigaction oact;
1975
1976 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
1977 return SIG_ERR;
1978 else
1979 return oact.sa_handler;
1980}
1981
1982int
8ac85365 1983rsignal_save(int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719
PP
1984{
1985 struct sigaction act;
1986
1987 act.sa_handler = handler;
1988 sigemptyset(&act.sa_mask);
1989 act.sa_flags = 0;
1990#ifdef SA_RESTART
1991 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
1992#endif
85264bed
CS
1993#ifdef SA_NOCLDWAIT
1994 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
1995 act.sa_flags |= SA_NOCLDWAIT;
1996#endif
ff68c719
PP
1997 return sigaction(signo, &act, save);
1998}
1999
2000int
8ac85365 2001rsignal_restore(int signo, Sigsave_t *save)
ff68c719
PP
2002{
2003 return sigaction(signo, save, (struct sigaction *)NULL);
2004}
2005
2006#else /* !HAS_SIGACTION */
2007
2008Sighandler_t
4e35701f 2009rsignal(int signo, Sighandler_t handler)
ff68c719 2010{
6ad3d225 2011 return PerlProc_signal(signo, handler);
ff68c719
PP
2012}
2013
2014static int sig_trapped;
2015
2016static
2017Signal_t
4e35701f 2018sig_trap(int signo)
ff68c719
PP
2019{
2020 sig_trapped++;
2021}
2022
2023Sighandler_t
4e35701f 2024rsignal_state(int signo)
ff68c719
PP
2025{
2026 Sighandler_t oldsig;
2027
2028 sig_trapped = 0;
6ad3d225
GS
2029 oldsig = PerlProc_signal(signo, sig_trap);
2030 PerlProc_signal(signo, oldsig);
ff68c719 2031 if (sig_trapped)
6ad3d225 2032 PerlProc_kill(getpid(), signo);
ff68c719
PP
2033 return oldsig;
2034}
2035
2036int
4e35701f 2037rsignal_save(int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2038{
6ad3d225 2039 *save = PerlProc_signal(signo, handler);
ff68c719
PP
2040 return (*save == SIG_ERR) ? -1 : 0;
2041}
2042
2043int
4e35701f 2044rsignal_restore(int signo, Sigsave_t *save)
ff68c719 2045{
6ad3d225 2046 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719
PP
2047}
2048
2049#endif /* !HAS_SIGACTION */
2050
5f05dabc
PP
2051 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
2052#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS)
79072805 2053I32
6acef3b7 2054my_pclose(PerlIO *ptr)
a687059c 2055{
ff68c719 2056 Sigsave_t hstat, istat, qstat;
a687059c 2057 int status;
a0d0e21e 2058 SV **svp;
20188a90 2059 int pid;
1d3434b8 2060 int pid2;
03136e13
CS
2061 bool close_failed;
2062 int saved_errno;
2063#ifdef VMS
2064 int saved_vaxc_errno;
2065#endif
22fae026
TM
2066#ifdef WIN32
2067 int saved_win32_errno;
2068#endif
a687059c 2069
3280af22 2070 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
748a9306 2071 pid = (int)SvIVX(*svp);
a0d0e21e 2072 SvREFCNT_dec(*svp);
3280af22 2073 *svp = &PL_sv_undef;
ddcf38b7
IZ
2074#ifdef OS2
2075 if (pid == -1) { /* Opened by popen. */
2076 return my_syspclose(ptr);
2077 }
2078#endif
03136e13
CS
2079 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2080 saved_errno = errno;
2081#ifdef VMS
2082 saved_vaxc_errno = vaxc$errno;
2083#endif
22fae026
TM
2084#ifdef WIN32
2085 saved_win32_errno = GetLastError();
2086#endif
03136e13 2087 }
7c0587c8 2088#ifdef UTS
6ad3d225 2089 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2090#endif
ff68c719
PP
2091 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2092 rsignal_save(SIGINT, SIG_IGN, &istat);
2093 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306 2094 do {
1d3434b8
GS
2095 pid2 = wait4pid(pid, &status, 0);
2096 } while (pid2 == -1 && errno == EINTR);
ff68c719
PP
2097 rsignal_restore(SIGHUP, &hstat);
2098 rsignal_restore(SIGINT, &istat);
2099 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS
2100 if (close_failed) {
2101 SETERRNO(saved_errno, saved_vaxc_errno);
2102 return -1;
2103 }
1d3434b8 2104 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2105}
4633a7c4
LW
2106#endif /* !DOSISH */
2107
2d7a9237 2108#if !defined(DOSISH) || defined(OS2) || defined(WIN32)
79072805 2109I32
8ac85365 2110wait4pid(int pid, int *statusp, int flags)
20188a90 2111{
79072805
LW
2112 SV *sv;
2113 SV** svp;
fc36a67e 2114 char spid[TYPE_CHARS(int)];
20188a90
LW
2115
2116 if (!pid)
2117 return -1;
20188a90
LW
2118 if (pid > 0) {
2119 sprintf(spid, "%d", pid);
3280af22
NIS
2120 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2121 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2122 *statusp = SvIVX(*svp);
3280af22 2123 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2124 return pid;
2125 }
2126 }
2127 else {
79072805 2128 HE *entry;
20188a90 2129
3280af22
NIS
2130 hv_iterinit(PL_pidstatus);
2131 if (entry = hv_iternext(PL_pidstatus)) {
a0d0e21e 2132 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2133 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2134 *statusp = SvIVX(sv);
20188a90 2135 sprintf(spid, "%d", pid);
3280af22 2136 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2137 return pid;
2138 }
2139 }
79072805 2140#ifdef HAS_WAITPID
367f3c24
IZ
2141# ifdef HAS_WAITPID_RUNTIME
2142 if (!HAS_WAITPID_RUNTIME)
2143 goto hard_way;
2144# endif
f55ee38a 2145 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ
2146#endif
2147#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2148 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ
2149#endif
2150#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2151 hard_way:
a0d0e21e
LW
2152 {
2153 I32 result;
2154 if (flags)
2155 croak("Can't do waitpid with flags");
2156 else {
76e3520e 2157 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW
2158 pidgone(result,*statusp);
2159 if (result < 0)
2160 *statusp = -1;
2161 }
2162 return result;
a687059c
LW
2163 }
2164#endif
a687059c 2165}
2d7a9237 2166#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2167
7c0587c8 2168void
de3bb511 2169/*SUPPRESS 590*/
8ac85365 2170pidgone(int pid, int status)
a687059c 2171{
79072805 2172 register SV *sv;
fc36a67e 2173 char spid[TYPE_CHARS(int)];
a687059c 2174
20188a90 2175 sprintf(spid, "%d", pid);
3280af22 2176 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2177 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2178 SvIVX(sv) = status;
20188a90 2179 return;
a687059c
LW
2180}
2181
55497cff 2182#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2183int pclose();
ddcf38b7
IZ
2184#ifdef HAS_FORK
2185int /* Cannot prototype with I32
2186 in os2ish.h. */
2187my_syspclose(ptr)
2188#else
79072805
LW
2189I32
2190my_pclose(ptr)
ddcf38b7 2191#endif
760ac839 2192PerlIO *ptr;
a687059c 2193{
760ac839
LW
2194 /* Needs work for PerlIO ! */
2195 FILE *f = PerlIO_findFILE(ptr);
2196 I32 result = pclose(f);
2197 PerlIO_releaseFILE(ptr,f);
2198 return result;
a687059c 2199}
7c0587c8 2200#endif
9f68db38
LW
2201
2202void
8ac85365 2203repeatcpy(register char *to, register char *from, I32 len, register I32 count)
9f68db38 2204{
79072805 2205 register I32 todo;
9f68db38
LW
2206 register char *frombase = from;
2207
2208 if (len == 1) {
2209 todo = *from;
2210 while (count-- > 0)
2211 *to++ = todo;
2212 return;
2213 }
2214 while (count-- > 0) {
2215 for (todo = len; todo > 0; todo--) {
2216 *to++ = *from++;
2217 }
2218 from = frombase;
2219 }
2220}
0f85fab0
LW
2221
2222#ifndef CASTNEGFLOAT
463ee0b2 2223U32
79072805 2224cast_ulong(f)
0f85fab0
LW
2225double f;
2226{
2227 long along;
2228
27e2fb84 2229#if CASTFLAGS & 2
34de22dd
LW
2230# define BIGDOUBLE 2147483648.0
2231 if (f >= BIGDOUBLE)
2232 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2233#endif
0f85fab0
LW
2234 if (f >= 0.0)
2235 return (unsigned long)f;
2236 along = (long)f;
2237 return (unsigned long)along;
2238}
ed6116ce
LW
2239# undef BIGDOUBLE
2240#endif
2241
2242#ifndef CASTI32
5d94fbed 2243
5d94fbed
AD
2244/* Unfortunately, on some systems the cast_uv() function doesn't
2245 work with the system-supplied definition of ULONG_MAX. The
2246 comparison (f >= ULONG_MAX) always comes out true. It must be a
2247 problem with the compiler constant folding.
2248
2249 In any case, this workaround should be fine on any two's complement
2250 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2251 ccflags.
2252 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2253*/
1eb770ff
PP
2254
2255/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2256 of LONG_(MIN/MAX).
2257 -- Kenneth Albanowski <kjahds@kjahds.com>
2258*/
2259
20cec16a
PP
2260#ifndef MY_UV_MAX
2261# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD
2262#endif
2263
ed6116ce
LW
2264I32
2265cast_i32(f)
2266double f;
2267{
20cec16a
PP
2268 if (f >= I32_MAX)
2269 return (I32) I32_MAX;
2270 if (f <= I32_MIN)
2271 return (I32) I32_MIN;
ed6116ce
LW
2272 return (I32) f;
2273}
a0d0e21e
LW
2274
2275IV
2276cast_iv(f)
2277double f;
2278{
20cec16a
PP
2279 if (f >= IV_MAX)
2280 return (IV) IV_MAX;
2281 if (f <= IV_MIN)
2282 return (IV) IV_MIN;
a0d0e21e
LW
2283 return (IV) f;
2284}
5d94fbed
AD
2285
2286UV
2287cast_uv(f)
2288double f;
2289{
20cec16a
PP
2290 if (f >= MY_UV_MAX)
2291 return (UV) MY_UV_MAX;
5d94fbed
AD
2292 return (UV) f;
2293}
2294
0f85fab0 2295#endif
62b28dd9 2296
fe14fcc3 2297#ifndef HAS_RENAME
79072805 2298I32
62b28dd9
LW
2299same_dirent(a,b)
2300char *a;
2301char *b;
2302{
93a17b20
LW
2303 char *fa = strrchr(a,'/');
2304 char *fb = strrchr(b,'/');
62b28dd9
LW
2305 struct stat tmpstatbuf1;
2306 struct stat tmpstatbuf2;
46fc3d4c 2307 SV *tmpsv = sv_newmortal();
62b28dd9
LW
2308
2309 if (fa)
2310 fa++;
2311 else
2312 fa = a;
2313 if (fb)
2314 fb++;
2315 else
2316 fb = b;
2317 if (strNE(a,b))
2318 return FALSE;
2319 if (fa == a)
46fc3d4c 2320 sv_setpv(tmpsv, ".");
62b28dd9 2321 else
46fc3d4c 2322 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2323 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW
2324 return FALSE;
2325 if (fb == b)
46fc3d4c 2326 sv_setpv(tmpsv, ".");
62b28dd9 2327 else
46fc3d4c 2328 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2329 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW
2330 return FALSE;
2331 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2332 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2333}
fe14fcc3
LW
2334#endif /* !HAS_RENAME */
2335
55497cff 2336UV
8ac85365 2337scan_oct(char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2338{
2339 register char *s = start;
55497cff
PP
2340 register UV retval = 0;
2341 bool overflowed = FALSE;
fe14fcc3 2342
748a9306 2343 while (len && *s >= '0' && *s <= '7') {
55497cff
PP
2344 register UV n = retval << 3;
2345 if (!overflowed && (n >> 3) != retval) {
2346 warn("Integer overflow in octal number");
2347 overflowed = TRUE;
2348 }
2349 retval = n | (*s++ - '0');
748a9306 2350 len--;
fe14fcc3 2351 }
3280af22 2352 if (PL_dowarn && len && (*s == '8' || *s == '9'))
748a9306 2353 warn("Illegal octal digit ignored");
fe14fcc3
LW
2354 *retlen = s - start;
2355 return retval;
2356}
2357
71be2cbc 2358UV
8ac85365 2359scan_hex(char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2360{
2361 register char *s = start;
55497cff
PP
2362 register UV retval = 0;
2363 bool overflowed = FALSE;
6ff81951 2364 char *tmp = s;
fe14fcc3 2365
3280af22 2366 while (len-- && *s && (tmp = strchr((char *) PL_hexdigit, *s))) {
55497cff
PP
2367 register UV n = retval << 4;
2368 if (!overflowed && (n >> 4) != retval) {
2369 warn("Integer overflow in hex number");
2370 overflowed = TRUE;
2371 }
3280af22 2372 retval = n | ((tmp - PL_hexdigit) & 15);
fe14fcc3
LW
2373 s++;
2374 }
3280af22 2375 if (PL_dowarn && !tmp) {
6ff81951
GS
2376 warn("Illegal hex digit ignored");
2377 }
fe14fcc3
LW
2378 *retlen = s - start;
2379 return retval;
2380}
760ac839 2381
491527d0
GS
2382char*
2383find_script(char *scriptname, bool dosearch, char **search_ext, I32 flags)
2384{
2385 dTHR;
2386 char *xfound = Nullch;
2387 char *xfailed = Nullch;
84486fc6 2388 char tmpbuf[512];
491527d0
GS
2389 register char *s;
2390 I32 len;
2391 int retval;
2392#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
2393# define SEARCH_EXTS ".bat", ".cmd", NULL
2394# define MAX_EXT_LEN 4
2395#endif
2396#ifdef OS2
2397# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
2398# define MAX_EXT_LEN 4
2399#endif
2400#ifdef VMS
2401# define SEARCH_EXTS ".pl", ".com", NULL
2402# define MAX_EXT_LEN 4
2403#endif
2404 /* additional extensions to try in each dir if scriptname not found */
2405#ifdef SEARCH_EXTS
2406 char *exts[] = { SEARCH_EXTS };
2407 char **ext = search_ext ? search_ext : exts;
2408 int extidx = 0, i = 0;
2409 char *curext = Nullch;
2410#else
2411# define MAX_EXT_LEN 0
2412#endif
2413
2414 /*
2415 * If dosearch is true and if scriptname does not contain path
2416 * delimiters, search the PATH for scriptname.
2417 *
2418 * If SEARCH_EXTS is also defined, will look for each
2419 * scriptname{SEARCH_EXTS} whenever scriptname is not found
2420 * while searching the PATH.
2421 *
2422 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
2423 * proceeds as follows:
2424 * If DOSISH or VMSISH:
2425 * + look for ./scriptname{,.foo,.bar}
2426 * + search the PATH for scriptname{,.foo,.bar}
2427 *
2428 * If !DOSISH:
2429 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
2430 * this will not look in '.' if it's not in the PATH)
2431 */
84486fc6 2432 tmpbuf[0] = '\0';
491527d0
GS
2433
2434#ifdef VMS
2435# ifdef ALWAYS_DEFTYPES
2436 len = strlen(scriptname);
2437 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
2438 int hasdir, idx = 0, deftypes = 1;
2439 bool seen_dot = 1;
2440
2441 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
2442# else
2443 if (dosearch) {
2444 int hasdir, idx = 0, deftypes = 1;
2445 bool seen_dot = 1;
2446
2447 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
2448# endif
2449 /* The first time through, just add SEARCH_EXTS to whatever we
2450 * already have, so we can check for default file types. */
2451 while (deftypes ||
84486fc6 2452 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS
2453 {
2454 if (deftypes) {
2455 deftypes = 0;
84486fc6 2456 *tmpbuf = '\0';
491527d0 2457 }
84486fc6
GS
2458 if ((strlen(tmpbuf) + strlen(scriptname)
2459 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 2460 continue; /* don't search dir with too-long name */
84486fc6 2461 strcat(tmpbuf, scriptname);
491527d0
GS
2462#else /* !VMS */
2463
2464#ifdef DOSISH
2465 if (strEQ(scriptname, "-"))
2466 dosearch = 0;
2467 if (dosearch) { /* Look in '.' first. */
2468 char *cur = scriptname;
2469#ifdef SEARCH_EXTS
2470 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
2471 while (ext[i])
2472 if (strEQ(ext[i++],curext)) {
2473 extidx = -1; /* already has an ext */
2474 break;
2475 }
2476 do {
2477#endif
2478 DEBUG_p(PerlIO_printf(Perl_debug_log,
2479 "Looking for %s\n",cur));
2480 if (PerlLIO_stat(cur,&statbuf) >= 0) {
2481 dosearch = 0;
2482 scriptname = cur;
2483#ifdef SEARCH_EXTS
2484 break;
2485#endif
2486 }
2487#ifdef SEARCH_EXTS
2488 if (cur == scriptname) {
2489 len = strlen(scriptname);
84486fc6 2490 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 2491 break;
84486fc6 2492 cur = strcpy(tmpbuf, scriptname);
491527d0
GS
2493 }
2494 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 2495 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS
2496#endif
2497 }
2498#endif
2499
2500 if (dosearch && !strchr(scriptname, '/')
2501#ifdef DOSISH
2502 && !strchr(scriptname, '\\')
2503#endif
2504 && (s = PerlEnv_getenv("PATH"))) {
2505 bool seen_dot = 0;
2506
3280af22
NIS
2507 PL_bufend = s + strlen(s);
2508 while (s < PL_bufend) {
491527d0
GS
2509#if defined(atarist) || defined(DOSISH)
2510 for (len = 0; *s
2511# ifdef atarist
2512 && *s != ','
2513# endif
2514 && *s != ';'; len++, s++) {
84486fc6
GS
2515 if (len < sizeof tmpbuf)
2516 tmpbuf[len] = *s;
491527d0 2517 }
84486fc6
GS
2518 if (len < sizeof tmpbuf)
2519 tmpbuf[len] = '\0';
491527d0 2520#else /* ! (atarist || DOSISH) */
3280af22 2521 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS
2522 ':',
2523 &len);
2524#endif /* ! (atarist || DOSISH) */
3280af22 2525 if (s < PL_bufend)
491527d0 2526 s++;
84486fc6 2527 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0
GS
2528 continue; /* don't search dir with too-long name */
2529 if (len
2530#if defined(atarist) || defined(DOSISH)
84486fc6
GS
2531 && tmpbuf[len - 1] != '/'
2532 && tmpbuf[len - 1] != '\\'
491527d0
GS
2533#endif
2534 )
84486fc6
GS
2535 tmpbuf[len++] = '/';
2536 if (len == 2 && tmpbuf[0] == '.')
491527d0 2537 seen_dot = 1;
84486fc6 2538 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS
2539#endif /* !VMS */
2540
2541#ifdef SEARCH_EXTS
84486fc6 2542 len = strlen(tmpbuf);
491527d0
GS
2543 if (extidx > 0) /* reset after previous loop */
2544 extidx = 0;
2545 do {
2546#endif
84486fc6 2547 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 2548 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
491527d0
GS
2549#ifdef SEARCH_EXTS
2550 } while ( retval < 0 /* not there */
2551 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 2552 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS
2553 );
2554#endif
2555 if (retval < 0)
2556 continue;
3280af22
NIS
2557 if (S_ISREG(PL_statbuf.st_mode)
2558 && cando(S_IRUSR,TRUE,&PL_statbuf)
491527d0 2559#ifndef DOSISH
3280af22 2560 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS
2561#endif
2562 )
2563 {
84486fc6 2564 xfound = tmpbuf; /* bingo! */
491527d0
GS
2565 break;
2566 }
2567 if (!xfailed)
84486fc6 2568 xfailed = savepv(tmpbuf);
491527d0
GS
2569 }
2570#ifndef DOSISH
3280af22 2571 if (!xfound && !seen_dot && !xfailed && (PerlLIO_stat(scriptname,&PL_statbuf) < 0))
491527d0
GS
2572#endif
2573 seen_dot = 1; /* Disable message. */
9ccb31f9
GS
2574 if (!xfound) {
2575 if (flags & 1) { /* do or die? */
2576 croak("Can't %s %s%s%s",
2577 (xfailed ? "execute" : "find"),
2578 (xfailed ? xfailed : scriptname),
2579 (xfailed ? "" : " on PATH"),
2580 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
2581 }
2582 scriptname = Nullch;
2583 }
491527d0
GS
2584 if (xfailed)
2585 Safefree(xfailed);
2586 scriptname = xfound;
2587 }
9ccb31f9 2588 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS
2589}
2590
2591
11343788 2592#ifdef USE_THREADS
12ca11f6
MB
2593#ifdef FAKE_THREADS
2594/* Very simplistic scheduler for now */
2595void
2596schedule(void)
2597{
c7848ba1 2598 thr = thr->i.next_run;
12ca11f6
MB
2599}
2600
2601void
2602perl_cond_init(cp)
2603perl_cond *cp;
2604{
2605 *cp = 0;
2606}
2607
2608void
2609perl_cond_signal(cp)
2610perl_cond *cp;
2611{
51dd5992 2612 perl_os_thread t;
12ca11f6
MB
2613 perl_cond cond = *cp;
2614
2615 if (!cond)
2616 return;
2617 t = cond->thread;
2618 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
2619 t->i.next_run = thr->i.next_run;
2620 thr->i.next_run->i.prev_run = t;
2621 t->i.prev_run = thr;
2622 thr->i.next_run = t;
2623 thr->i.wait_queue = 0;
12ca11f6
MB
2624 /* Remove from the wait queue */
2625 *cp = cond->next;
2626 Safefree(cond);
2627}
2628
2629void
2630perl_cond_broadcast(cp)
2631perl_cond *cp;
2632{
51dd5992 2633 perl_os_thread t;
12ca11f6
MB
2634 perl_cond cond, cond_next;
2635
2636 for (cond = *cp; cond; cond = cond_next) {
2637 t = cond->thread;
2638 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
2639 t->i.next_run = thr->i.next_run;
2640 thr->i.next_run->i.prev_run = t;
2641 t->i.prev_run = thr;
2642 thr->i.next_run = t;
2643 thr->i.wait_queue = 0;
12ca11f6
MB
2644 /* Remove from the wait queue */
2645 cond_next = cond->next;
2646 Safefree(cond);
2647 }
2648 *cp = 0;
2649}
2650
2651void
2652perl_cond_wait(cp)
2653perl_cond *cp;
2654{
2655 perl_cond cond;
2656
c7848ba1 2657 if (thr->i.next_run == thr)
12ca11f6
MB
2658 croak("panic: perl_cond_wait called by last runnable thread");
2659
0f15f207 2660 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB
2661 cond->thread = thr;
2662 cond->next = *cp;
2663 *cp = cond;
c7848ba1 2664 thr->i.wait_queue = cond;
12ca11f6 2665 /* Remove ourselves from runnable queue */
c7848ba1
MB
2666 thr->i.next_run->i.prev_run = thr->i.prev_run;
2667 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB
2668}
2669#endif /* FAKE_THREADS */
2670
11343788 2671#ifdef OLD_PTHREADS_API
52e1cb5e 2672struct perl_thread *
11343788
MB
2673getTHR _((void))
2674{
2675 pthread_addr_t t;
2676
2677 if (pthread_getspecific(thr_key, &t))
2678 croak("panic: pthread_getspecific");
52e1cb5e 2679 return (struct perl_thread *) t;
11343788
MB
2680}
2681#endif /* OLD_PTHREADS_API */
f93b4edd
MB
2682
2683MAGIC *
8ac85365 2684condpair_magic(SV *sv)
f93b4edd
MB
2685{
2686 MAGIC *mg;
2687
2688 SvUPGRADE(sv, SVt_PVMG);
2689 mg = mg_find(sv, 'm');
2690 if (!mg) {
2691 condpair_t *cp;
2692
2693 New(53, cp, 1, condpair_t);
2694 MUTEX_INIT(&cp->mutex);
2695 COND_INIT(&cp->owner_cond);
2696 COND_INIT(&cp->cond);
2697 cp->owner = 0;
940cb80d 2698 LOCK_SV_MUTEX;
f93b4edd
MB
2699 mg = mg_find(sv, 'm');
2700 if (mg) {
2701 /* someone else beat us to initialising it */
940cb80d 2702 UNLOCK_SV_MUTEX;
f93b4edd
MB
2703 MUTEX_DESTROY(&cp->mutex);
2704 COND_DESTROY(&cp->owner_cond);
2705 COND_DESTROY(&cp->cond);
2706 Safefree(cp);
2707 }
2708 else {
2709 sv_magic(sv, Nullsv, 'm', 0, 0);
2710 mg = SvMAGIC(sv);
2711 mg->mg_ptr = (char *)cp;
565764a8 2712 mg->mg_len = sizeof(cp);
940cb80d 2713 UNLOCK_SV_MUTEX;
bc1f4c86 2714 DEBUG_L(WITH_THR(PerlIO_printf(PerlIO_stderr(),
c7848ba1 2715 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB
2716 }
2717 }
2718 return mg;
2719}
a863c7d1
MB
2720
2721/*
199100c8
MB
2722 * Make a new perl thread structure using t as a prototype. Some of the
2723 * fields for the new thread are copied from the prototype thread, t,
2724 * so t should not be running in perl at the time this function is
2725 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
2726 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 2727 */
52e1cb5e
JH
2728struct perl_thread *
2729new_struct_thread(struct perl_thread *t)
a863c7d1 2730{
52e1cb5e 2731 struct perl_thread *thr;
a863c7d1 2732 SV *sv;
199100c8
MB
2733 SV **svp;
2734 I32 i;
2735
2736 sv = newSVpv("", 0);
52e1cb5e
JH
2737 SvGROW(sv, sizeof(struct perl_thread) + 1);
2738 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 2739 thr = (Thread) SvPVX(sv);
199100c8 2740 /* debug */
52e1cb5e 2741 memset(thr, 0xab, sizeof(struct perl_thread));
199100c8
MB
2742 markstack = 0;
2743 scopestack = 0;
2744 savestack = 0;
2745 retstack = 0;
2746 dirty = 0;
2747 localizing = 0;
2748 /* end debug */
2749
2750 thr->oursv = sv;
d55594ae 2751 init_stacks(ARGS);
a863c7d1 2752
a863c7d1 2753 curcop = &compiling;
199100c8 2754 thr->cvcache = newHV();
54b9620d 2755 thr->threadsv = newAV();
a863c7d1 2756 thr->specific = newAV();
38a03e6e
MB
2757 thr->errsv = newSVpv("", 0);
2758 thr->errhv = newHV();
a863c7d1
MB
2759 thr->flags = THRf_R_JOINABLE;
2760 MUTEX_INIT(&thr->mutex);
199100c8
MB
2761
2762 curcop = t->Tcurcop; /* XXX As good a guess as any? */
2763 defstash = t->Tdefstash; /* XXX maybe these should */
2764 curstash = t->Tcurstash; /* always be set to main? */
d55594ae
GS
2765
2766
2767 /* top_env needs to be non-zero. It points to an area
2768 in which longjmp() stuff is stored, as C callstack
2769 info there at least is thread specific this has to
2770 be per-thread. Otherwise a 'die' in a thread gives
2771 that thread the C stack of last thread to do an eval {}!
2772 See comments in scope.h
2773 Initialize top entry (as in perl.c for main thread)
2774 */
6224f72b
GS
2775 start_env.je_prev = NULL;
2776 start_env.je_ret = -1;
2777 start_env.je_mustcatch = TRUE;
2778 top_env = &start_env;
d55594ae 2779
199100c8
MB
2780 in_eval = FALSE;
2781 restartop = 0;
2782
2783 tainted = t->Ttainted;
2784 curpm = t->Tcurpm; /* XXX No PMOP ref count */
2785 nrs = newSVsv(t->Tnrs);
dc92893f 2786 rs = SvREFCNT_inc(nrs);
199100c8
MB
2787 last_in_gv = (GV*)SvREFCNT_inc(t->Tlast_in_gv);
2788 ofslen = t->Tofslen;
2789 ofs = savepvn(t->Tofs, ofslen);
2790 defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
2791 chopset = t->Tchopset;
2792 formtarget = newSVsv(t->Tformtarget);
2793 bodytarget = newSVsv(t->Tbodytarget);
2794 toptarget = newSVsv(t->Ttoptarget);
5c0ca799
GS
2795
2796 statname = NEWSV(66,0);
2797 maxscream = -1;
2798 regcompp = FUNC_NAME_TO_PTR(pregcomp);
2799 regexecp = FUNC_NAME_TO_PTR(regexec_flags);
2800 regindent = 0;
2801 reginterp_cnt = 0;
2802 lastscream = Nullsv;
2803 screamfirst = 0;
2804 screamnext = 0;
2805 reg_start_tmp = 0;
13c658c9 2806 reg_start_tmpl = 0;
199100c8 2807
54b9620d
MB
2808 /* Initialise all per-thread SVs that the template thread used */
2809 svp = AvARRAY(t->threadsv);
93965878 2810 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
199100c8
MB
2811 if (*svp && *svp != &sv_undef) {
2812 SV *sv = newSVsv(*svp);
54b9620d
MB
2813 av_store(thr->threadsv, i, sv);
2814 sv_magic(sv, 0, 0, &threadsv_names[i], 1);
199100c8 2815 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
54b9620d 2816 "new_struct_thread: copied threadsv %d %p->%p\n",i, t, thr));
199100c8
MB
2817 }
2818 }
940cb80d 2819 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 2820
a863c7d1
MB
2821 MUTEX_LOCK(&threads_mutex);
2822 nthreads++;
199100c8
MB
2823 thr->tid = ++threadnum;
2824 thr->next = t->next;
2825 thr->prev = t;
2826 t->next = thr;
2827 thr->next->prev = thr;
a863c7d1
MB
2828 MUTEX_UNLOCK(&threads_mutex);
2829
2830#ifdef HAVE_THREAD_INTERN
2831 init_thread_intern(thr);
a863c7d1 2832#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB
2833 return thr;
2834}
11343788 2835#endif /* USE_THREADS */
760ac839
LW
2836
2837#ifdef HUGE_VAL
2838/*
2839 * This hack is to force load of "huge" support from libm.a
2840 * So it is in perl for (say) POSIX to use.
2841 * Needed for SunOS with Sun's 'acc' for example.
2842 */
2843double
8ac85365 2844Perl_huge(void)
760ac839
LW
2845{
2846 return HUGE_VAL;
2847}
2848#endif
4e35701f 2849
22239a37
NIS
2850#ifdef PERL_GLOBAL_STRUCT
2851struct perl_vars *
2852Perl_GetVars(void)
2853{
2854 return &Perl_Vars;
2855}
31fb1209
NIS
2856#endif
2857
2858char **
2859get_op_names(void)
2860{
2861 return op_name;
2862}
2863
2864char **
2865get_op_descs(void)
2866{
2867 return op_desc;
2868}
9e6b2b00
GS
2869
2870char *
2871get_no_modify(void)
2872{
2873 return (char*)no_modify;
2874}
2875
2876U32 *
2877get_opargs(void)
2878{
2879 return opargs;
2880}
51aa15f3
GS
2881
2882
2883SV **
2884get_specialsv_list(void)
2885{
3280af22 2886 return PL_specialsv_list;
f55ee38a 2887}