This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
Cosmetic: data-driven REx-dump
[perl5.git] / util.c
CommitLineData
a0d0e21e 1/* util.c
a687059c 2 *
4eb8286e 3 * Copyright (c) 1991-1999, 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
e1dfb34b 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
f2517201 65/* paranoid version of system's malloc() */
8d063cd8 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
f2517201 74safesysmalloc(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
6ad3d225 87 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
79072805 88#if !(defined(I286) || defined(atarist))
3280af22 89 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) malloc %ld bytes\n",ptr,PL_an++,(long)size));
79072805 90#else
6b88bc9c 91 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) malloc %ld bytes\n",ptr,PL_an++,(long)size));
8d063cd8
LW
92#endif
93 if (ptr != Nullch)
94 return ptr;
3280af22 95 else if (PL_nomemok)
7c0587c8 96 return Nullch;
8d063cd8 97 else {
22c35a8c 98 PerlIO_puts(PerlIO_stderr(),PL_no_mem) FLUSH;
79072805 99 my_exit(1);
4e35701f 100 return Nullch;
8d063cd8
LW
101 }
102 /*NOTREACHED*/
103}
104
f2517201 105/* paranoid version of system's realloc() */
8d063cd8 106
bd4080b3 107Malloc_t
f2517201 108safesysrealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 109{
bd4080b3 110 Malloc_t ptr;
ecfc5424 111#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
6ad3d225 112 Malloc_t PerlMem_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 */
7614df0c 122 if (!size) {
f2517201 123 safesysfree(where);
7614df0c
JD
124 return NULL;
125 }
126
378cc40b 127 if (!where)
f2517201 128 return safesysmalloc(size);
34de22dd
LW
129#ifdef DEBUGGING
130 if ((long)size < 0)
463ee0b2 131 croak("panic: realloc");
34de22dd 132#endif
7614df0c 133 ptr = PerlMem_realloc(where,size);
79072805
LW
134
135#if !(defined(I286) || defined(atarist))
136 DEBUG_m( {
3280af22
NIS
137 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) rfree\n",where,PL_an++);
138 PerlIO_printf(Perl_debug_log, "0x%x: (%05d) realloc %ld bytes\n",ptr,PL_an++,(long)size);
79072805
LW
139 } )
140#else
141 DEBUG_m( {
6b88bc9c
GS
142 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) rfree\n",where,PL_an++);
143 PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) realloc %ld bytes\n",ptr,PL_an++,(long)size);
79072805 144 } )
8d063cd8 145#endif
79072805 146
8d063cd8
LW
147 if (ptr != Nullch)
148 return ptr;
3280af22 149 else if (PL_nomemok)
7c0587c8 150 return Nullch;
8d063cd8 151 else {
22c35a8c 152 PerlIO_puts(PerlIO_stderr(),PL_no_mem) FLUSH;
79072805 153 my_exit(1);
4e35701f 154 return Nullch;
8d063cd8
LW
155 }
156 /*NOTREACHED*/
157}
158
f2517201 159/* safe version of system's free() */
8d063cd8 160
54310121 161Free_t
f2517201 162safesysfree(Malloc_t where)
8d063cd8 163{
79072805 164#if !(defined(I286) || defined(atarist))
3280af22 165 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%x: (%05d) free\n",(char *) where,PL_an++));
79072805 166#else
6b88bc9c 167 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) free\n",(char *) where,PL_an++));
8d063cd8 168#endif
378cc40b 169 if (where) {
de3bb511 170 /*SUPPRESS 701*/
6ad3d225 171 PerlMem_free(where);
378cc40b 172 }
8d063cd8
LW
173}
174
f2517201 175/* safe version of system's calloc() */
1050c9ca 176
bd4080b3 177Malloc_t
f2517201 178safesyscalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 179{
bd4080b3 180 Malloc_t ptr;
1050c9ca 181
55497cff 182#ifdef HAS_64K_LIMIT
5f05dabc
PP
183 if (size * count > 0xffff) {
184 PerlIO_printf(PerlIO_stderr(),
185 "Allocation too large: %lx\n", size * count) FLUSH;
186 my_exit(1);
187 }
55497cff 188#endif /* HAS_64K_LIMIT */
1050c9ca
PP
189#ifdef DEBUGGING
190 if ((long)size < 0 || (long)count < 0)
191 croak("panic: calloc");
192#endif
0b7c1c42 193 size *= count;
6ad3d225 194 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
1050c9ca 195#if !(defined(I286) || defined(atarist))
3280af22 196 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%x: (%05d) calloc %ld x %ld bytes\n",ptr,PL_an++,(long)count,(long)size));
1050c9ca 197#else
6b88bc9c 198 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) calloc %ld x %ld bytes\n",ptr,PL_an++,(long)count,(long)size));
1050c9ca 199#endif
1050c9ca
PP
200 if (ptr != Nullch) {
201 memset((void*)ptr, 0, size);
202 return ptr;
203 }
3280af22 204 else if (PL_nomemok)
1050c9ca
PP
205 return Nullch;
206 else {
22c35a8c 207 PerlIO_puts(PerlIO_stderr(),PL_no_mem) FLUSH;
1050c9ca 208 my_exit(1);
4e35701f 209 return Nullch;
1050c9ca
PP
210 }
211 /*NOTREACHED*/
212}
213
a687059c
LW
214#ifdef LEAKTEST
215
8c52afec
IZ
216struct mem_test_strut {
217 union {
218 long type;
219 char c[2];
220 } u;
221 long size;
222};
223
224# define ALIGN sizeof(struct mem_test_strut)
225
226# define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
227# define typeof_chunk(ch) \
228 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
229# define set_typeof_chunk(ch,t) \
230 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
231#define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
232 ? MAXYCOUNT - 1 \
233 : ( (size) > 40 \
234 ? ((size) - 1)/8 + 5 \
235 : ((size) - 1)/4))
8d063cd8 236
bd4080b3 237Malloc_t
f0f333f4 238safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 239{
8c52afec 240 register char* where = (char*)safemalloc(size + ALIGN);
8d063cd8 241
8c52afec
IZ
242 xcount[x] += size;
243 xycount[x][SIZE_TO_Y(size)]++;
244 set_typeof_chunk(where, x);
245 sizeof_chunk(where) = size;
246 return (Malloc_t)(where + ALIGN);
8d063cd8 247}
8d063cd8 248
bd4080b3 249Malloc_t
8c52afec 250safexrealloc(Malloc_t wh, MEM_SIZE size)
a687059c 251{
8c52afec
IZ
252 char *where = (char*)wh;
253
254 if (!wh)
255 return safexmalloc(0,size);
256
257 {
258 MEM_SIZE old = sizeof_chunk(where - ALIGN);
259 int t = typeof_chunk(where - ALIGN);
260 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
261
262 xycount[t][SIZE_TO_Y(old)]--;
263 xycount[t][SIZE_TO_Y(size)]++;
264 xcount[t] += size - old;
265 sizeof_chunk(new) = size;
266 return (Malloc_t)(new + ALIGN);
267 }
a687059c
LW
268}
269
270void
8c52afec 271safexfree(Malloc_t wh)
a687059c 272{
79072805 273 I32 x;
8c52afec
IZ
274 char *where = (char*)wh;
275 MEM_SIZE size;
276
a687059c
LW
277 if (!where)
278 return;
279 where -= ALIGN;
8c52afec 280 size = sizeof_chunk(where);
a687059c 281 x = where[0] + 100 * where[1];
8c52afec
IZ
282 xcount[x] -= size;
283 xycount[x][SIZE_TO_Y(size)]--;
a687059c
LW
284 safefree(where);
285}
286
bd4080b3 287Malloc_t
f0f333f4 288safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 289{
8c52afec
IZ
290 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
291 xcount[x] += size;
292 xycount[x][SIZE_TO_Y(size)]++;
293 memset((void*)(where + ALIGN), 0, size * count);
294 set_typeof_chunk(where, x);
295 sizeof_chunk(where) = size;
296 return (Malloc_t)(where + ALIGN);
1050c9ca
PP
297}
298
7c0587c8 299static void
8c52afec 300xstat(int flag)
8d063cd8 301{
8c52afec
IZ
302 register I32 i, j, total = 0;
303 I32 subtot[MAXYCOUNT];
8d063cd8 304
8c52afec
IZ
305 for (j = 0; j < MAXYCOUNT; j++) {
306 subtot[j] = 0;
307 }
308
309 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 310 for (i = 0; i < MAXXCOUNT; i++) {
8c52afec
IZ
311 total += xcount[i];
312 for (j = 0; j < MAXYCOUNT; j++) {
313 subtot[j] += xycount[i][j];
314 }
315 if (flag == 0
316 ? xcount[i] /* Have something */
317 : (flag == 2
318 ? xcount[i] != lastxcount[i] /* Changed */
319 : xcount[i] > lastxcount[i])) { /* Growed */
320 PerlIO_printf(PerlIO_stderr(),"%2d %02d %7ld ", i / 100, i % 100,
321 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
a687059c 322 lastxcount[i] = xcount[i];
8c52afec
IZ
323 for (j = 0; j < MAXYCOUNT; j++) {
324 if ( flag == 0
325 ? xycount[i][j] /* Have something */
326 : (flag == 2
327 ? xycount[i][j] != lastxycount[i][j] /* Changed */
328 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
329 PerlIO_printf(PerlIO_stderr(),"%3ld ",
330 flag == 2
331 ? xycount[i][j] - lastxycount[i][j]
332 : xycount[i][j]);
333 lastxycount[i][j] = xycount[i][j];
334 } else {
335 PerlIO_printf(PerlIO_stderr(), " . ", xycount[i][j]);
336 }
337 }
338 PerlIO_printf(PerlIO_stderr(), "\n");
339 }
340 }
341 if (flag != 2) {
342 PerlIO_printf(PerlIO_stderr(), "Total %7ld ", total);
343 for (j = 0; j < MAXYCOUNT; j++) {
344 if (subtot[j]) {
345 PerlIO_printf(PerlIO_stderr(), "%3ld ", subtot[j]);
346 } else {
347 PerlIO_printf(PerlIO_stderr(), " . ");
348 }
8d063cd8 349 }
8c52afec 350 PerlIO_printf(PerlIO_stderr(), "\n");
8d063cd8 351 }
8d063cd8 352}
a687059c
LW
353
354#endif /* LEAKTEST */
8d063cd8
LW
355
356/* copy a string up to some (non-backslashed) delimiter, if any */
357
358char *
8ac85365 359delimcpy(register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 360{
fc36a67e
PP
361 register I32 tolen;
362 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW
363 if (*from == '\\') {
364 if (from[1] == delim)
365 from++;
fc36a67e
PP
366 else {
367 if (to < toend)
368 *to++ = *from;
369 tolen++;
370 from++;
371 }
378cc40b 372 }
bedebaa5 373 else if (*from == delim)
8d063cd8 374 break;
fc36a67e
PP
375 if (to < toend)
376 *to++ = *from;
8d063cd8 377 }
bedebaa5
CS
378 if (to < toend)
379 *to = '\0';
fc36a67e 380 *retlen = tolen;
8d063cd8
LW
381 return from;
382}
383
384/* return ptr to little string in big string, NULL if not found */
378cc40b 385/* This routine was donated by Corey Satten. */
8d063cd8
LW
386
387char *
08105a92 388instr(register const char *big, register const char *little)
378cc40b 389{
08105a92 390 register const char *s, *x;
79072805 391 register I32 first;
378cc40b 392
a687059c 393 if (!little)
08105a92 394 return (char*)big;
a687059c 395 first = *little++;
378cc40b 396 if (!first)
08105a92 397 return (char*)big;
378cc40b
LW
398 while (*big) {
399 if (*big++ != first)
400 continue;
401 for (x=big,s=little; *s; /**/ ) {
402 if (!*x)
403 return Nullch;
404 if (*s++ != *x++) {
405 s--;
406 break;
407 }
408 }
409 if (!*s)
08105a92 410 return (char*)(big-1);
378cc40b
LW
411 }
412 return Nullch;
413}
8d063cd8 414
a687059c
LW
415/* same as instr but allow embedded nulls */
416
417char *
08105a92 418ninstr(register const char *big, register const char *bigend, const char *little, const char *lend)
8d063cd8 419{
08105a92 420 register const char *s, *x;
79072805 421 register I32 first = *little;
08105a92 422 register const char *littleend = lend;
378cc40b 423
a0d0e21e 424 if (!first && little >= littleend)
08105a92 425 return (char*)big;
de3bb511
LW
426 if (bigend - big < littleend - little)
427 return Nullch;
a687059c
LW
428 bigend -= littleend - little++;
429 while (big <= bigend) {
430 if (*big++ != first)
431 continue;
432 for (x=big,s=little; s < littleend; /**/ ) {
433 if (*s++ != *x++) {
434 s--;
435 break;
436 }
437 }
438 if (s >= littleend)
08105a92 439 return (char*)(big-1);
378cc40b 440 }
a687059c
LW
441 return Nullch;
442}
443
444/* reverse of the above--find last substring */
445
446char *
08105a92 447rninstr(register const char *big, const char *bigend, const char *little, const char *lend)
a687059c 448{
08105a92
GS
449 register const char *bigbeg;
450 register const char *s, *x;
79072805 451 register I32 first = *little;
08105a92 452 register const char *littleend = lend;
a687059c 453
a0d0e21e 454 if (!first && little >= littleend)
08105a92 455 return (char*)bigend;
a687059c
LW
456 bigbeg = big;
457 big = bigend - (littleend - little++);
458 while (big >= bigbeg) {
459 if (*big-- != first)
460 continue;
461 for (x=big+2,s=little; s < littleend; /**/ ) {
462 if (*s++ != *x++) {
463 s--;
464 break;
465 }
466 }
467 if (s >= littleend)
08105a92 468 return (char*)(big+1);
378cc40b 469 }
a687059c 470 return Nullch;
378cc40b 471}
a687059c 472
bbce6d69
PP
473/*
474 * Set up for a new ctype locale.
475 */
55497cff 476void
08105a92 477perl_new_ctype(const char *newctype)
ef7eada9 478{
36477c24
PP
479#ifdef USE_LOCALE_CTYPE
480
bbce6d69 481 int i;
ef7eada9 482
bbce6d69
PP
483 for (i = 0; i < 256; i++) {
484 if (isUPPER_LC(i))
22c35a8c 485 PL_fold_locale[i] = toLOWER_LC(i);
bbce6d69 486 else if (isLOWER_LC(i))
22c35a8c 487 PL_fold_locale[i] = toUPPER_LC(i);
bbce6d69 488 else
22c35a8c 489 PL_fold_locale[i] = i;
bbce6d69 490 }
bbce6d69 491
36477c24
PP
492#endif /* USE_LOCALE_CTYPE */
493}
bbce6d69
PP
494
495/*
496 * Set up for a new collation locale.
497 */
498void
08105a92 499perl_new_collate(const char *newcoll)
bbce6d69 500{
36477c24
PP
501#ifdef USE_LOCALE_COLLATE
502
bbce6d69 503 if (! newcoll) {
3280af22
NIS
504 if (PL_collation_name) {
505 ++PL_collation_ix;
506 Safefree(PL_collation_name);
507 PL_collation_name = NULL;
508 PL_collation_standard = TRUE;
509 PL_collxfrm_base = 0;
510 PL_collxfrm_mult = 2;
bbce6d69
PP
511 }
512 return;
513 }
514
3280af22
NIS
515 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
516 ++PL_collation_ix;
517 Safefree(PL_collation_name);
518 PL_collation_name = savepv(newcoll);
519 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 520
bbce6d69
PP
521 {
522 /* 2: at most so many chars ('a', 'b'). */
523 /* 50: surely no system expands a char more. */
524#define XFRMBUFSIZE (2 * 50)
525 char xbuf[XFRMBUFSIZE];
526 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
527 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
528 SSize_t mult = fb - fa;
529 if (mult < 1)
530 croak("strxfrm() gets absurd");
3280af22
NIS
531 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
532 PL_collxfrm_mult = mult;
bbce6d69 533 }
bbce6d69 534 }
bbce6d69 535
36477c24
PP
536#endif /* USE_LOCALE_COLLATE */
537}
bbce6d69
PP
538
539/*
540 * Set up for a new numeric locale.
541 */
542void
08105a92 543perl_new_numeric(const char *newnum)
bbce6d69 544{
36477c24
PP
545#ifdef USE_LOCALE_NUMERIC
546
bbce6d69 547 if (! newnum) {
3280af22
NIS
548 if (PL_numeric_name) {
549 Safefree(PL_numeric_name);
550 PL_numeric_name = NULL;
551 PL_numeric_standard = TRUE;
552 PL_numeric_local = TRUE;
bbce6d69
PP
553 }
554 return;
555 }
556
3280af22
NIS
557 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
558 Safefree(PL_numeric_name);
559 PL_numeric_name = savepv(newnum);
560 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
561 PL_numeric_local = TRUE;
bbce6d69 562 }
36477c24
PP
563
564#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
565}
566
567void
8ac85365 568perl_set_numeric_standard(void)
bbce6d69 569{
5f05dabc
PP
570#ifdef USE_LOCALE_NUMERIC
571
3280af22 572 if (! PL_numeric_standard) {
bbce6d69 573 setlocale(LC_NUMERIC, "C");
3280af22
NIS
574 PL_numeric_standard = TRUE;
575 PL_numeric_local = FALSE;
bbce6d69 576 }
5f05dabc
PP
577
578#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
579}
580
581void
8ac85365 582perl_set_numeric_local(void)
bbce6d69 583{
5f05dabc
PP
584#ifdef USE_LOCALE_NUMERIC
585
3280af22
NIS
586 if (! PL_numeric_local) {
587 setlocale(LC_NUMERIC, PL_numeric_name);
588 PL_numeric_standard = FALSE;
589 PL_numeric_local = TRUE;
bbce6d69 590 }
bbce6d69 591
36477c24 592#endif /* USE_LOCALE_NUMERIC */
5f05dabc 593}
36477c24 594
bbce6d69 595
36477c24
PP
596/*
597 * Initialize locale awareness.
598 */
f0c5b223 599int
8ac85365 600perl_init_i18nl10n(int printwarn)
f0c5b223
TB
601{
602 int ok = 1;
603 /* returns
604 * 1 = set ok or not applicable,
605 * 0 = fallback to C locale,
606 * -1 = fallback to C locale failed
607 */
bbce6d69 608
36477c24 609#ifdef USE_LOCALE
bbce6d69 610
36477c24 611#ifdef USE_LOCALE_CTYPE
bbce6d69 612 char *curctype = NULL;
36477c24
PP
613#endif /* USE_LOCALE_CTYPE */
614#ifdef USE_LOCALE_COLLATE
bbce6d69 615 char *curcoll = NULL;
36477c24
PP
616#endif /* USE_LOCALE_COLLATE */
617#ifdef USE_LOCALE_NUMERIC
bbce6d69 618 char *curnum = NULL;
36477c24 619#endif /* USE_LOCALE_NUMERIC */
3aeabbed
JH
620#ifdef __GLIBC__
621 char *language = PerlEnv_getenv("LANGUAGE");
622#endif
76e3520e
GS
623 char *lc_all = PerlEnv_getenv("LC_ALL");
624 char *lang = PerlEnv_getenv("LANG");
bbce6d69 625 bool setlocale_failure = FALSE;
f0c5b223 626
02b32252
CS
627#ifdef LOCALE_ENVIRON_REQUIRED
628
629 /*
630 * Ultrix setlocale(..., "") fails if there are no environment
631 * variables from which to get a locale name.
632 */
633
634 bool done = FALSE;
635
636#ifdef LC_ALL
637 if (lang) {
638 if (setlocale(LC_ALL, ""))
639 done = TRUE;
640 else
641 setlocale_failure = TRUE;
642 }
0644c9cb 643 if (!setlocale_failure) {
02b32252 644#ifdef USE_LOCALE_CTYPE
0644c9cb
IS
645 if (! (curctype =
646 setlocale(LC_CTYPE,
647 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
02b32252
CS
648 ? "" : Nullch)))
649 setlocale_failure = TRUE;
650#endif /* USE_LOCALE_CTYPE */
651#ifdef USE_LOCALE_COLLATE
0644c9cb
IS
652 if (! (curcoll =
653 setlocale(LC_COLLATE,
654 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
02b32252
CS
655 ? "" : Nullch)))
656 setlocale_failure = TRUE;
657#endif /* USE_LOCALE_COLLATE */
658#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS
659 if (! (curnum =
660 setlocale(LC_NUMERIC,
661 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
02b32252
CS
662 ? "" : Nullch)))
663 setlocale_failure = TRUE;
664#endif /* USE_LOCALE_NUMERIC */
665 }
666
0644c9cb 667#endif /* LC_ALL */
02b32252 668
0644c9cb 669#endif /* !LOCALE_ENVIRON_REQUIRED */
5f05dabc 670
0644c9cb 671#ifdef LC_ALL
bbce6d69
PP
672 if (! setlocale(LC_ALL, ""))
673 setlocale_failure = TRUE;
0644c9cb 674#endif /* LC_ALL */
bbce6d69 675
0644c9cb 676 if (!setlocale_failure) {
36477c24 677#ifdef USE_LOCALE_CTYPE
0644c9cb
IS
678 if (! (curctype = setlocale(LC_CTYPE, "")))
679 setlocale_failure = TRUE;
36477c24
PP
680#endif /* USE_LOCALE_CTYPE */
681#ifdef USE_LOCALE_COLLATE
0644c9cb
IS
682 if (! (curcoll = setlocale(LC_COLLATE, "")))
683 setlocale_failure = TRUE;
36477c24
PP
684#endif /* USE_LOCALE_COLLATE */
685#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS
686 if (! (curnum = setlocale(LC_NUMERIC, "")))
687 setlocale_failure = TRUE;
36477c24 688#endif /* USE_LOCALE_NUMERIC */
0644c9cb 689 }
02b32252 690
5f05dabc
PP
691 if (setlocale_failure) {
692 char *p;
693 bool locwarn = (printwarn > 1 ||
694 printwarn &&
76e3520e 695 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)));
20cec16a 696
5f05dabc
PP
697 if (locwarn) {
698#ifdef LC_ALL
699
700 PerlIO_printf(PerlIO_stderr(),
701 "perl: warning: Setting locale failed.\n");
702
703#else /* !LC_ALL */
704
ef7eada9 705 PerlIO_printf(PerlIO_stderr(),
bbce6d69 706 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 707#ifdef USE_LOCALE_CTYPE
bbce6d69 708 if (! curctype)
5f05dabc 709 PerlIO_printf(PerlIO_stderr(), "LC_CTYPE ");
36477c24
PP
710#endif /* USE_LOCALE_CTYPE */
711#ifdef USE_LOCALE_COLLATE
bbce6d69 712 if (! curcoll)
5f05dabc 713 PerlIO_printf(PerlIO_stderr(), "LC_COLLATE ");
36477c24
PP
714#endif /* USE_LOCALE_COLLATE */
715#ifdef USE_LOCALE_NUMERIC
bbce6d69 716 if (! curnum)
5f05dabc 717 PerlIO_printf(PerlIO_stderr(), "LC_NUMERIC ");
36477c24 718#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
719 PerlIO_printf(PerlIO_stderr(), "\n");
720
5f05dabc
PP
721#endif /* LC_ALL */
722
760ac839 723 PerlIO_printf(PerlIO_stderr(),
bbce6d69 724 "perl: warning: Please check that your locale settings:\n");
ef7eada9 725
3aeabbed
JH
726#ifdef __GLIBC__
727 PerlIO_printf(PerlIO_stderr(),
728 "\tLANGUAGE = %c%s%c,\n",
729 language ? '"' : '(',
730 language ? language : "unset",
731 language ? '"' : ')');
732#endif
733
ef7eada9 734 PerlIO_printf(PerlIO_stderr(),
bbce6d69
PP
735 "\tLC_ALL = %c%s%c,\n",
736 lc_all ? '"' : '(',
737 lc_all ? lc_all : "unset",
738 lc_all ? '"' : ')');
5f05dabc
PP
739
740 {
741 char **e;
742 for (e = environ; *e; e++) {
743 if (strnEQ(*e, "LC_", 3)
744 && strnNE(*e, "LC_ALL=", 7)
745 && (p = strchr(*e, '=')))
746 PerlIO_printf(PerlIO_stderr(), "\t%.*s = \"%s\",\n",
fb73857a 747 (int)(p - *e), *e, p + 1);
5f05dabc
PP
748 }
749 }
750
ef7eada9 751 PerlIO_printf(PerlIO_stderr(),
bbce6d69 752 "\tLANG = %c%s%c\n",
5f05dabc 753 lang ? '"' : '(',
bbce6d69
PP
754 lang ? lang : "unset",
755 lang ? '"' : ')');
ef7eada9 756
bbce6d69
PP
757 PerlIO_printf(PerlIO_stderr(),
758 " are supported and installed on your system.\n");
5f05dabc 759 }
ef7eada9 760
5f05dabc
PP
761#ifdef LC_ALL
762
763 if (setlocale(LC_ALL, "C")) {
764 if (locwarn)
765 PerlIO_printf(PerlIO_stderr(),
766 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 767 ok = 0;
ef7eada9 768 }
5f05dabc
PP
769 else {
770 if (locwarn)
771 PerlIO_printf(PerlIO_stderr(),
772 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
773 ok = -1;
774 }
bbce6d69 775
5f05dabc
PP
776#else /* ! LC_ALL */
777
778 if (0
36477c24 779#ifdef USE_LOCALE_CTYPE
5f05dabc 780 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24
PP
781#endif /* USE_LOCALE_CTYPE */
782#ifdef USE_LOCALE_COLLATE
5f05dabc 783 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24
PP
784#endif /* USE_LOCALE_COLLATE */
785#ifdef USE_LOCALE_NUMERIC
5f05dabc 786 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 787#endif /* USE_LOCALE_NUMERIC */
5f05dabc
PP
788 )
789 {
790 if (locwarn)
bbce6d69 791 PerlIO_printf(PerlIO_stderr(),
5f05dabc
PP
792 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
793 ok = -1;
bbce6d69 794 }
5f05dabc 795
bbce6d69 796#endif /* ! LC_ALL */
5f05dabc
PP
797
798#ifdef USE_LOCALE_CTYPE
799 curctype = setlocale(LC_CTYPE, Nullch);
800#endif /* USE_LOCALE_CTYPE */
801#ifdef USE_LOCALE_COLLATE
802 curcoll = setlocale(LC_COLLATE, Nullch);
803#endif /* USE_LOCALE_COLLATE */
804#ifdef USE_LOCALE_NUMERIC
805 curnum = setlocale(LC_NUMERIC, Nullch);
806#endif /* USE_LOCALE_NUMERIC */
ef7eada9
JH
807 }
808
36477c24 809#ifdef USE_LOCALE_CTYPE
bbce6d69 810 perl_new_ctype(curctype);
36477c24 811#endif /* USE_LOCALE_CTYPE */
bbce6d69 812
36477c24 813#ifdef USE_LOCALE_COLLATE
bbce6d69 814 perl_new_collate(curcoll);
36477c24 815#endif /* USE_LOCALE_COLLATE */
bbce6d69 816
36477c24 817#ifdef USE_LOCALE_NUMERIC
bbce6d69 818 perl_new_numeric(curnum);
36477c24 819#endif /* USE_LOCALE_NUMERIC */
ef7eada9 820
36477c24 821#endif /* USE_LOCALE */
ef7eada9 822
f0c5b223
TB
823 return ok;
824}
825
bbce6d69
PP
826/* Backwards compatibility. */
827int
8ac85365 828perl_init_i18nl14n(int printwarn)
bbce6d69 829{
5f05dabc 830 return perl_init_i18nl10n(printwarn);
bbce6d69 831}
ef7eada9 832
36477c24 833#ifdef USE_LOCALE_COLLATE
ef7eada9 834
bbce6d69
PP
835/*
836 * mem_collxfrm() is a bit like strxfrm() but with two important
837 * differences. First, it handles embedded NULs. Second, it allocates
838 * a bit more memory than needed for the transformed data itself.
839 * The real transformed data begins at offset sizeof(collationix).
840 * Please see sv_collxfrm() to see how this is used.
841 */
842char *
8ac85365 843mem_collxfrm(const char *s, STRLEN len, STRLEN *xlen)
bbce6d69
PP
844{
845 char *xbuf;
76e3520e 846 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69
PP
847
848 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
849 /* the +1 is for the terminating NUL. */
850
3280af22 851 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
76e3520e 852 New(171, xbuf, xAlloc, char);
bbce6d69
PP
853 if (! xbuf)
854 goto bad;
855
3280af22
NIS
856 *(U32*)xbuf = PL_collation_ix;
857 xout = sizeof(PL_collation_ix);
bbce6d69
PP
858 for (xin = 0; xin < len; ) {
859 SSize_t xused;
860
861 for (;;) {
76e3520e 862 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69
PP
863 if (xused == -1)
864 goto bad;
76e3520e 865 if (xused < xAlloc - xout)
bbce6d69 866 break;
76e3520e
GS
867 xAlloc = (2 * xAlloc) + 1;
868 Renew(xbuf, xAlloc, char);
bbce6d69
PP
869 if (! xbuf)
870 goto bad;
871 }
ef7eada9 872
bbce6d69
PP
873 xin += strlen(s + xin) + 1;
874 xout += xused;
875
876 /* Embedded NULs are understood but silently skipped
877 * because they make no sense in locale collation. */
878 }
ef7eada9 879
bbce6d69 880 xbuf[xout] = '\0';
3280af22 881 *xlen = xout - sizeof(PL_collation_ix);
bbce6d69
PP
882 return xbuf;
883
884 bad:
885 Safefree(xbuf);
886 *xlen = 0;
887 return NULL;
ef7eada9
JH
888}
889
36477c24 890#endif /* USE_LOCALE_COLLATE */
bbce6d69 891
378cc40b 892void
2779dcf1 893fbm_compile(SV *sv, U32 flags /* not used yet */)
378cc40b 894{
942e002e
GS
895 register U8 *s;
896 register U8 *table;
79072805 897 register U32 i;
0b71040e 898 STRLEN len;
79072805
LW
899 I32 rarest = 0;
900 U32 frequency = 256;
901
942e002e 902 s = (U8*)SvPV_force(sv, len);
07f14f54 903 (void)SvUPGRADE(sv, SVt_PVBM);
c277df42 904 if (len > 255 || len == 0) /* TAIL might be on on a zero-length string. */
748a9306 905 return; /* can't have offsets that big */
02128f11
IZ
906 if (len > 2) {
907 Sv_Grow(sv,len + 258);
908 table = (unsigned char*)(SvPVX(sv) + len + 1);
909 s = table - 2;
910 for (i = 0; i < 256; i++) {
911 table[i] = len;
912 }
913 i = 0;
914 while (s >= (unsigned char*)(SvPVX(sv)))
915 {
916 if (table[*s] == len)
917 table[*s] = i;
918 s--,i++;
919 }
378cc40b 920 }
bbce6d69 921 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 922 SvVALID_on(sv);
378cc40b 923
463ee0b2 924 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69 925 for (i = 0; i < len; i++) {
22c35a8c 926 if (PL_freq[s[i]] < frequency) {
bbce6d69 927 rarest = i;
22c35a8c 928 frequency = PL_freq[s[i]];
378cc40b
LW
929 }
930 }
79072805
LW
931 BmRARE(sv) = s[rarest];
932 BmPREVIOUS(sv) = rarest;
760ac839 933 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW
934}
935
378cc40b 936char *
411d5715 937fbm_instr(unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
378cc40b 938{
a687059c 939 register unsigned char *s;
79072805
LW
940 register I32 tmp;
941 register I32 littlelen;
a687059c
LW
942 register unsigned char *little;
943 register unsigned char *table;
944 register unsigned char *olds;
945 register unsigned char *oldlittle;
378cc40b 946
79072805 947 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
a0d0e21e
LW
948 STRLEN len;
949 char *l = SvPV(littlestr,len);
c277df42 950 if (!len) {
02128f11
IZ
951 if (SvTAIL(littlestr)) { /* Can be only 0-len constant
952 substr => we can ignore SvVALID */
3280af22 953 if (PL_multiline) {
02128f11 954 char *t = "\n";
3fe6f2dc
MB
955 if ((s = (unsigned char*)ninstr((char*)big, (char*)bigend,
956 t, t + len))) {
957 return (char*)s;
958 }
02128f11 959 }
c277df42 960 if (bigend > big && bigend[-1] == '\n')
161b471a 961 return (char *)(bigend - 1);
c277df42 962 else
161b471a 963 return (char *) bigend;
c277df42 964 }
d48672a2 965 return (char*)big;
c277df42 966 }
a0d0e21e 967 return ninstr((char*)big,(char*)bigend, l, l + len);
d48672a2 968 }
378cc40b 969
79072805 970 littlelen = SvCUR(littlestr);
3280af22 971 if (SvTAIL(littlestr) && !PL_multiline) { /* tail anchored? */
0f85fab0
LW
972 if (littlelen > bigend - big)
973 return Nullch;
463ee0b2 974 little = (unsigned char*)SvPVX(littlestr);
bbce6d69 975 s = bigend - littlelen;
02128f11
IZ
976 if (s > big
977 && bigend[-1] == '\n'
978 && s[-1] == *little && memEQ((char*)s - 1,(char*)little,littlelen))
979 return (char*)s - 1; /* how sweet it is */
980 else if (*s == *little && memEQ((char*)s,(char*)little,littlelen))
bbce6d69 981 return (char*)s; /* how sweet it is */
02128f11
IZ
982 return Nullch;
983 }
984 if (littlelen <= 2) {
985 unsigned char c1 = (unsigned char)SvPVX(littlestr)[0];
986 unsigned char c2 = (unsigned char)SvPVX(littlestr)[1];
987 /* This may do extra comparisons if littlelen == 2, but this
988 should be hidden in the noise since we do less indirection. */
989
990 s = big;
991 bigend -= littlelen;
992 while (s <= bigend) {
993 if (s[0] == c1
994 && (littlelen == 1 || s[1] == c2)
995 && (!SvTAIL(littlestr)
996 || s == bigend
997 || s[littlelen] == '\n')) /* Automatically multiline */
3fe6f2dc
MB
998 {
999 return (char*)s;
1000 }
02128f11 1001 s++;
a687059c 1002 }
bbce6d69 1003 return Nullch;
a687059c 1004 }
463ee0b2 1005 table = (unsigned char*)(SvPVX(littlestr) + littlelen + 1);
62b28dd9
LW
1006 if (--littlelen >= bigend - big)
1007 return Nullch;
1008 s = big + littlelen;
a687059c 1009 oldlittle = little = table - 2;
bbce6d69
PP
1010 if (s < bigend) {
1011 top2:
1012 /*SUPPRESS 560*/
1013 if (tmp = table[*s]) {
62b28dd9 1014#ifdef POINTERRIGOR
bbce6d69
PP
1015 if (bigend - s > tmp) {
1016 s += tmp;
1017 goto top2;
1018 }
62b28dd9 1019#else
bbce6d69
PP
1020 if ((s += tmp) < bigend)
1021 goto top2;
62b28dd9 1022#endif
bbce6d69 1023 return Nullch;
a687059c 1024 }
bbce6d69
PP
1025 else {
1026 tmp = littlelen; /* less expensive than calling strncmp() */
1027 olds = s;
1028 while (tmp--) {
1029 if (*--s == *--little)
1030 continue;
c277df42 1031 differ:
bbce6d69
PP
1032 s = olds + 1; /* here we pay the price for failure */
1033 little = oldlittle;
1034 if (s < bigend) /* fake up continue to outer loop */
62b28dd9 1035 goto top2;
62b28dd9 1036 return Nullch;
a687059c 1037 }
c277df42
IZ
1038 if (SvTAIL(littlestr) /* automatically multiline */
1039 && olds + 1 != bigend
1040 && olds[1] != '\n')
1041 goto differ;
bbce6d69 1042 return (char *)s;
378cc40b
LW
1043 }
1044 }
1045 return Nullch;
1046}
1047
c277df42
IZ
1048/* start_shift, end_shift are positive quantities which give offsets
1049 of ends of some substring of bigstr.
1050 If `last' we want the last occurence.
1051 old_posp is the way of communication between consequent calls if
1052 the next call needs to find the .
1053 The initial *old_posp should be -1.
1054 Note that we do not take into account SvTAIL, so it may give wrong
1055 positives if _ALL flag is set.
1056 */
1057
378cc40b 1058char *
c277df42 1059screaminstr(SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1060{
5c0ca799 1061 dTHR;
a687059c
LW
1062 register unsigned char *s, *x;
1063 register unsigned char *big;
79072805
LW
1064 register I32 pos;
1065 register I32 previous;
1066 register I32 first;
a687059c 1067 register unsigned char *little;
c277df42 1068 register I32 stop_pos;
a687059c 1069 register unsigned char *littleend;
c277df42 1070 I32 found = 0;
378cc40b 1071
c277df42 1072 if (*old_posp == -1
3280af22
NIS
1073 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
1074 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0))
378cc40b 1075 return Nullch;
463ee0b2 1076 little = (unsigned char *)(SvPVX(littlestr));
79072805 1077 littleend = little + SvCUR(littlestr);
378cc40b 1078 first = *little++;
c277df42 1079 /* The value of pos we can start at: */
79072805 1080 previous = BmPREVIOUS(littlestr);
463ee0b2 1081 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ
1082 /* The value of pos we can stop at: */
1083 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
1084 if (previous + start_shift > stop_pos) return Nullch;
1085 while (pos < previous + start_shift) {
3280af22 1086 if (!(pos += PL_screamnext[pos]))
378cc40b
LW
1087 return Nullch;
1088 }
de3bb511 1089#ifdef POINTERRIGOR
bbce6d69 1090 do {
ef64f398 1091 if (pos >= stop_pos) break;
bbce6d69
PP
1092 if (big[pos-previous] != first)
1093 continue;
1094 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1095 if (*s++ != *x++) {
1096 s--;
1097 break;
de3bb511 1098 }
bbce6d69 1099 }
c277df42
IZ
1100 if (s == littleend) {
1101 *old_posp = pos;
1102 if (!last) return (char *)(big+pos-previous);
1103 found = 1;
1104 }
6b88bc9c 1105 } while ( pos += PL_screamnext[pos] );
c277df42 1106 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW
1107#else /* !POINTERRIGOR */
1108 big -= previous;
bbce6d69 1109 do {
ef64f398 1110 if (pos >= stop_pos) break;
bbce6d69
PP
1111 if (big[pos] != first)
1112 continue;
1113 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1114 if (*s++ != *x++) {
1115 s--;
1116 break;
378cc40b 1117 }
bbce6d69 1118 }
c277df42
IZ
1119 if (s == littleend) {
1120 *old_posp = pos;
1121 if (!last) return (char *)(big+pos);
1122 found = 1;
1123 }
3280af22 1124 } while ( pos += PL_screamnext[pos] );
c277df42 1125 return (last && found) ? (char *)(big+(*old_posp)) : Nullch;
de3bb511 1126#endif /* POINTERRIGOR */
8d063cd8
LW
1127}
1128
79072805 1129I32
08105a92 1130ibcmp(const char *s1, const char *s2, register I32 len)
79072805 1131{
bbce6d69
PP
1132 register U8 *a = (U8 *)s1;
1133 register U8 *b = (U8 *)s2;
79072805 1134 while (len--) {
22c35a8c 1135 if (*a != *b && *a != PL_fold[*b])
bbce6d69
PP
1136 return 1;
1137 a++,b++;
1138 }
1139 return 0;
1140}
1141
1142I32
08105a92 1143ibcmp_locale(const char *s1, const char *s2, register I32 len)
bbce6d69
PP
1144{
1145 register U8 *a = (U8 *)s1;
1146 register U8 *b = (U8 *)s2;
1147 while (len--) {
22c35a8c 1148 if (*a != *b && *a != PL_fold_locale[*b])
bbce6d69
PP
1149 return 1;
1150 a++,b++;
79072805
LW
1151 }
1152 return 0;
1153}
1154
8d063cd8
LW
1155/* copy a string to a safe spot */
1156
1157char *
08105a92 1158savepv(const char *sv)
8d063cd8 1159{
a687059c 1160 register char *newaddr;
8d063cd8 1161
79072805
LW
1162 New(902,newaddr,strlen(sv)+1,char);
1163 (void)strcpy(newaddr,sv);
8d063cd8
LW
1164 return newaddr;
1165}
1166
a687059c
LW
1167/* same thing but with a known length */
1168
1169char *
08105a92 1170savepvn(const char *sv, register I32 len)
a687059c
LW
1171{
1172 register char *newaddr;
1173
1174 New(903,newaddr,len+1,char);
79072805 1175 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW
1176 newaddr[len] = '\0'; /* is now */
1177 return newaddr;
1178}
1179
fc36a67e
PP
1180/* the SV for form() and mess() is not kept in an arena */
1181
76e3520e 1182STATIC SV *
8ac85365 1183mess_alloc(void)
fc36a67e 1184{
e72dc28c 1185 dTHR;
fc36a67e
PP
1186 SV *sv;
1187 XPVMG *any;
1188
e72dc28c
GS
1189 if (!PL_dirty)
1190 return sv_2mortal(newSVpvn("",0));
1191
0372dbb6
GS
1192 if (PL_mess_sv)
1193 return PL_mess_sv;
1194
fc36a67e
PP
1195 /* Create as PVMG now, to avoid any upgrading later */
1196 New(905, sv, 1, SV);
1197 Newz(905, any, 1, XPVMG);
1198 SvFLAGS(sv) = SVt_PVMG;
1199 SvANY(sv) = (void*)any;
1200 SvREFCNT(sv) = 1 << 30; /* practically infinite */
e72dc28c 1201 PL_mess_sv = sv;
fc36a67e
PP
1202 return sv;
1203}
1204
8990e307 1205char *
46fc3d4c 1206form(const char* pat, ...)
8990e307 1207{
e72dc28c 1208 SV *sv = mess_alloc();
46fc3d4c 1209 va_list args;
46fc3d4c 1210 va_start(args, pat);
e72dc28c 1211 sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
46fc3d4c 1212 va_end(args);
e72dc28c 1213 return SvPVX(sv);
46fc3d4c 1214}
a687059c 1215
06bf62c7 1216SV *
8ac85365 1217mess(const char *pat, va_list *args)
46fc3d4c 1218{
e72dc28c 1219 SV *sv = mess_alloc();
46fc3d4c
PP
1220 static char dgd[] = " during global destruction.\n";
1221
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;
515f54a1
GS
1225 if (PL_curcop->cop_line)
1226 sv_catpvf(sv, " at %_ line %ld",
1227 GvSV(PL_curcop->cop_filegv), (long)PL_curcop->cop_line);
1228 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1229 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1230 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
515f54a1
GS
1231 sv_catpvf(sv, ", <%s> %s %ld",
1232 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1233 line_mode ? "line" : "chunk",
1234 (long)IoLINES(GvIOp(PL_last_in_gv)));
a687059c 1235 }
515f54a1 1236 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1237 }
06bf62c7 1238 return sv;
a687059c
LW
1239}
1240
36477c24 1241OP *
71be2cbc 1242die(const char* pat, ...)
36477c24 1243{
5dc0d613 1244 dTHR;
36477c24
PP
1245 va_list args;
1246 char *message;
3280af22 1247 int was_in_eval = PL_in_eval;
36477c24
PP
1248 HV *stash;
1249 GV *gv;
1250 CV *cv;
06bf62c7
GS
1251 SV *msv;
1252 STRLEN msglen;
36477c24 1253
8b73bbec 1254 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
199100c8 1255 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1256 thr, PL_curstack, PL_mainstack));
36477c24 1257
36477c24 1258 va_start(args, pat);
06bf62c7
GS
1259 if (pat) {
1260 msv = mess(pat, &args);
1261 message = SvPV(msv,msglen);
1262 }
1263 else {
1264 message = Nullch;
1265 }
36477c24
PP
1266 va_end(args);
1267
8b73bbec 1268 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
199100c8 1269 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1270 thr, message, PL_diehook));
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;
79cb57f6 1284 if (message) {
06bf62c7 1285 msg = newSVpvn(message, msglen);
4e6ea2c3
GS
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
06bf62c7 1303 PL_restartop = die_where(message, msglen);
8b73bbec 1304 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
7c06b590 1305 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1306 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1307 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1308 JMPENV_JUMP(3);
3280af22 1309 return PL_restartop;
36477c24
PP
1310}
1311
79072805 1312void
71be2cbc 1313croak(const char* pat, ...)
a687059c 1314{
11343788 1315 dTHR;
a687059c 1316 va_list args;
de3bb511 1317 char *message;
748a9306
LW
1318 HV *stash;
1319 GV *gv;
1320 CV *cv;
06bf62c7
GS
1321 SV *msv;
1322 STRLEN msglen;
a687059c 1323
8990e307 1324 va_start(args, pat);
06bf62c7
GS
1325 msv = mess(pat, &args);
1326 message = SvPV(msv,msglen);
a687059c 1327 va_end(args);
8b73bbec 1328 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
3280af22 1329 if (PL_diehook) {
1738f5c4 1330 /* sv_2cv might call croak() */
3280af22 1331 SV *olddiehook = PL_diehook;
1738f5c4 1332 ENTER;
3280af22
NIS
1333 SAVESPTR(PL_diehook);
1334 PL_diehook = Nullsv;
20cec16a 1335 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS
1336 LEAVE;
1337 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1338 dSP;
774d564b
PP
1339 SV *msg;
1340
1341 ENTER;
06bf62c7 1342 msg = newSVpvn(message, msglen);
774d564b
PP
1343 SvREADONLY_on(msg);
1344 SAVEFREESV(msg);
20cec16a 1345
e788e7d3 1346 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1347 PUSHMARK(SP);
1738f5c4 1348 XPUSHs(msg);
20cec16a
PP
1349 PUTBACK;
1350 perl_call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1351 POPSTACK;
774d564b 1352 LEAVE;
20cec16a 1353 }
748a9306 1354 }
3280af22 1355 if (PL_in_eval) {
06bf62c7 1356 PL_restartop = die_where(message, msglen);
6224f72b 1357 JMPENV_JUMP(3);
a0d0e21e 1358 }
d175a3f0
GS
1359 {
1360#ifdef USE_SFIO
1361 /* SFIO can really mess with your errno */
1362 int e = errno;
1363#endif
06bf62c7 1364 PerlIO_write(PerlIO_stderr(), message, msglen);
d175a3f0
GS
1365 (void)PerlIO_flush(PerlIO_stderr());
1366#ifdef USE_SFIO
1367 errno = e;
1368#endif
1369 }
f86702cc 1370 my_failure_exit();
a687059c
LW
1371}
1372
8990e307 1373void
71be2cbc 1374warn(const char* pat,...)
a687059c
LW
1375{
1376 va_list args;
de3bb511 1377 char *message;
748a9306
LW
1378 HV *stash;
1379 GV *gv;
1380 CV *cv;
06bf62c7
GS
1381 SV *msv;
1382 STRLEN msglen;
a687059c 1383
8990e307 1384 va_start(args, pat);
06bf62c7
GS
1385 msv = mess(pat, &args);
1386 message = SvPV(msv, msglen);
a687059c
LW
1387 va_end(args);
1388
3280af22 1389 if (PL_warnhook) {
1738f5c4 1390 /* sv_2cv might call warn() */
11343788 1391 dTHR;
3280af22 1392 SV *oldwarnhook = PL_warnhook;
1738f5c4 1393 ENTER;
3280af22
NIS
1394 SAVESPTR(PL_warnhook);
1395 PL_warnhook = Nullsv;
20cec16a 1396 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS
1397 LEAVE;
1398 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1399 dSP;
774d564b
PP
1400 SV *msg;
1401
1402 ENTER;
06bf62c7 1403 msg = newSVpvn(message, msglen);
774d564b
PP
1404 SvREADONLY_on(msg);
1405 SAVEFREESV(msg);
1406
e788e7d3 1407 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1408 PUSHMARK(SP);
774d564b 1409 XPUSHs(msg);
20cec16a
PP
1410 PUTBACK;
1411 perl_call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1412 POPSTACK;
774d564b 1413 LEAVE;
20cec16a
PP
1414 return;
1415 }
748a9306 1416 }
06bf62c7 1417 PerlIO_write(PerlIO_stderr(), message, msglen);
a687059c 1418#ifdef LEAKTEST
8c52afec
IZ
1419 DEBUG_L(*message == '!'
1420 ? (xstat(message[1]=='!'
1421 ? (message[2]=='!' ? 2 : 1)
1422 : 0)
1423 , 0)
1424 : 0);
a687059c 1425#endif
20cec16a 1426 (void)PerlIO_flush(PerlIO_stderr());
a687059c 1427}
8d063cd8 1428
599cee73
PM
1429void
1430warner(U32 err, const char* pat,...)
1431{
d008e5eb 1432 dTHR;
599cee73
PM
1433 va_list args;
1434 char *message;
1435 HV *stash;
1436 GV *gv;
1437 CV *cv;
06bf62c7
GS
1438 SV *msv;
1439 STRLEN msglen;
599cee73
PM
1440
1441 va_start(args, pat);
06bf62c7
GS
1442 msv = mess(pat, &args);
1443 message = SvPV(msv, msglen);
599cee73
PM
1444 va_end(args);
1445
1446 if (ckDEAD(err)) {
1447#ifdef USE_THREADS
d008e5eb 1448 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
599cee73
PM
1449#endif /* USE_THREADS */
1450 if (PL_diehook) {
1451 /* sv_2cv might call croak() */
1452 SV *olddiehook = PL_diehook;
1453 ENTER;
1454 SAVESPTR(PL_diehook);
1455 PL_diehook = Nullsv;
1456 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1457 LEAVE;
1458 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1459 dSP;
1460 SV *msg;
1461
1462 ENTER;
06bf62c7 1463 msg = newSVpvn(message, msglen);
599cee73
PM
1464 SvREADONLY_on(msg);
1465 SAVEFREESV(msg);
1466
1467 PUSHMARK(sp);
1468 XPUSHs(msg);
1469 PUTBACK;
1470 perl_call_sv((SV*)cv, G_DISCARD);
1471
1472 LEAVE;
1473 }
1474 }
1475 if (PL_in_eval) {
06bf62c7 1476 PL_restartop = die_where(message, msglen);
599cee73
PM
1477 JMPENV_JUMP(3);
1478 }
06bf62c7 1479 PerlIO_write(PerlIO_stderr(), message, msglen);
599cee73
PM
1480 (void)PerlIO_flush(PerlIO_stderr());
1481 my_failure_exit();
1482
1483 }
1484 else {
1485 if (PL_warnhook) {
1486 /* sv_2cv might call warn() */
1487 dTHR;
1488 SV *oldwarnhook = PL_warnhook;
1489 ENTER;
1490 SAVESPTR(PL_warnhook);
1491 PL_warnhook = Nullsv;
1492 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1493 LEAVE;
1494 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1495 dSP;
1496 SV *msg;
1497
1498 ENTER;
06bf62c7 1499 msg = newSVpvn(message, msglen);
599cee73
PM
1500 SvREADONLY_on(msg);
1501 SAVEFREESV(msg);
1502
1503 PUSHMARK(sp);
1504 XPUSHs(msg);
1505 PUTBACK;
1506 perl_call_sv((SV*)cv, G_DISCARD);
1507
1508 LEAVE;
1509 return;
1510 }
1511 }
06bf62c7 1512 PerlIO_write(PerlIO_stderr(), message, msglen);
599cee73
PM
1513#ifdef LEAKTEST
1514 DEBUG_L(xstat());
1515#endif
1516 (void)PerlIO_flush(PerlIO_stderr());
1517 }
1518}
1519
a0d0e21e 1520#ifndef VMS /* VMS' my_setenv() is in VMS.c */
3e3baf6d 1521#ifndef WIN32
8d063cd8 1522void
8ac85365 1523my_setenv(char *nam, char *val)
8d063cd8 1524{
f2517201
GS
1525#ifndef PERL_USE_SAFE_PUTENV
1526 /* most putenv()s leak, so we manipulate environ directly */
79072805 1527 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1528
3280af22 1529 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW
1530 I32 j;
1531 I32 max;
fe14fcc3
LW
1532 char **tmpenv;
1533
de3bb511 1534 /*SUPPRESS 530*/
fe14fcc3 1535 for (max = i; environ[max]; max++) ;
f2517201
GS
1536 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1537 for (j=0; j<max; j++) { /* copy environment */
1538 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1539 strcpy(tmpenv[j], environ[j]);
1540 }
fe14fcc3
LW
1541 tmpenv[max] = Nullch;
1542 environ = tmpenv; /* tell exec where it is now */
1543 }
a687059c 1544 if (!val) {
f2517201 1545 safesysfree(environ[i]);
a687059c
LW
1546 while (environ[i]) {
1547 environ[i] = environ[i+1];
1548 i++;
1549 }
1550 return;
1551 }
8d063cd8 1552 if (!environ[i]) { /* does not exist yet */
f2517201 1553 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW
1554 environ[i+1] = Nullch; /* make sure it's null terminated */
1555 }
fe14fcc3 1556 else
f2517201
GS
1557 safesysfree(environ[i]);
1558 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1559
62b28dd9 1560#ifndef MSDOS
a687059c 1561 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
62b28dd9
LW
1562#else
1563 /* MS-DOS requires environment variable names to be in uppercase */
fe14fcc3
LW
1564 /* [Tom Dinger, 27 August 1990: Well, it doesn't _require_ it, but
1565 * some utilities and applications may break because they only look
1566 * for upper case strings. (Fixed strupr() bug here.)]
1567 */
1568 strcpy(environ[i],nam); strupr(environ[i]);
62b28dd9
LW
1569 (void)sprintf(environ[i] + strlen(nam),"=%s",val);
1570#endif /* MSDOS */
f2517201
GS
1571
1572#else /* PERL_USE_SAFE_PUTENV */
1573 char *new_env;
1574
1575 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
1576#ifndef MSDOS
1577 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
1578#else
1579 strcpy(new_env,nam); strupr(new_env);
1580 (void)sprintf(new_env + strlen(nam),"=%s",val);
1581#endif
1582 (void)putenv(new_env);
1583#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW
1584}
1585
3e3baf6d 1586#else /* if WIN32 */
68dc0745
PP
1587
1588void
4e35701f 1589my_setenv(char *nam,char *val)
68dc0745 1590{
3e3baf6d
TB
1591
1592#ifdef USE_WIN32_RTL_ENV
1593
68dc0745
PP
1594 register char *envstr;
1595 STRLEN namlen = strlen(nam);
3e3baf6d
TB
1596 STRLEN vallen;
1597 char *oldstr = environ[setenv_getix(nam)];
1598
1599 /* putenv() has totally broken semantics in both the Borland
1600 * and Microsoft CRTLs. They either store the passed pointer in
1601 * the environment without making a copy, or make a copy and don't
1602 * free it. And on top of that, they dont free() old entries that
1603 * are being replaced/deleted. This means the caller must
1604 * free any old entries somehow, or we end up with a memory
1605 * leak every time my_setenv() is called. One might think
1606 * one could directly manipulate environ[], like the UNIX code
1607 * above, but direct changes to environ are not allowed when
1608 * calling putenv(), since the RTLs maintain an internal
1609 * *copy* of environ[]. Bad, bad, *bad* stink.
1610 * GSAR 97-06-07
1611 */
68dc0745 1612
3e3baf6d
TB
1613 if (!val) {
1614 if (!oldstr)
1615 return;
1616 val = "";
1617 vallen = 0;
1618 }
1619 else
1620 vallen = strlen(val);
f2517201 1621 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 1622 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 1623 (void)PerlEnv_putenv(envstr);
3e3baf6d 1624 if (oldstr)
f2517201 1625 safesysfree(oldstr);
3e3baf6d 1626#ifdef _MSC_VER
f2517201 1627 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB
1628#endif
1629
1630#else /* !USE_WIN32_RTL_ENV */
1631
ac5c734f
GS
1632 register char *envstr;
1633 STRLEN len = strlen(nam) + 3;
1634 if (!val) {
1635 val = "";
1636 }
1637 len += strlen(val);
1638 New(904, envstr, len, char);
1639 (void)sprintf(envstr,"%s=%s",nam,val);
1640 (void)PerlEnv_putenv(envstr);
1641 Safefree(envstr);
3e3baf6d
TB
1642
1643#endif
1644}
1645
1646#endif /* WIN32 */
1647
1648I32
8ac85365 1649setenv_getix(char *nam)
3e3baf6d
TB
1650{
1651 register I32 i, len = strlen(nam);
1652
1653 for (i = 0; environ[i]; i++) {
1654 if (
1655#ifdef WIN32
1656 strnicmp(environ[i],nam,len) == 0
1657#else
1658 strnEQ(environ[i],nam,len)
1659#endif
1660 && environ[i][len] == '=')
1661 break; /* strnEQ must come first to avoid */
1662 } /* potential SEGV's */
1663 return i;
68dc0745
PP
1664}
1665
a0d0e21e 1666#endif /* !VMS */
378cc40b 1667
16d20bd9 1668#ifdef UNLINK_ALL_VERSIONS
79072805 1669I32
378cc40b
LW
1670unlnk(f) /* unlink all versions of a file */
1671char *f;
1672{
79072805 1673 I32 i;
378cc40b 1674
6ad3d225 1675 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW
1676 return i ? 0 : -1;
1677}
1678#endif
1679
85e6fe83 1680#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 1681char *
08105a92 1682my_bcopy(register const char *from,register char *to,register I32 len)
378cc40b
LW
1683{
1684 char *retval = to;
1685
7c0587c8
LW
1686 if (from - to >= 0) {
1687 while (len--)
1688 *to++ = *from++;
1689 }
1690 else {
1691 to += len;
1692 from += len;
1693 while (len--)
faf8582f 1694 *(--to) = *(--from);
7c0587c8 1695 }
378cc40b
LW
1696 return retval;
1697}
ffed7fef 1698#endif
378cc40b 1699
fc36a67e
PP
1700#ifndef HAS_MEMSET
1701void *
08105a92 1702my_memset(register char *loc, register I32 ch, register I32 len)
fc36a67e
PP
1703{
1704 char *retval = loc;
1705
1706 while (len--)
1707 *loc++ = ch;
1708 return retval;
1709}
1710#endif
1711
7c0587c8 1712#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 1713char *
08105a92 1714my_bzero(register char *loc, register I32 len)
378cc40b
LW
1715{
1716 char *retval = loc;
1717
1718 while (len--)
1719 *loc++ = 0;
1720 return retval;
1721}
1722#endif
7c0587c8 1723
36477c24 1724#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 1725I32
08105a92 1726my_memcmp(const char *s1, const char *s2, register I32 len)
7c0587c8 1727{
36477c24
PP
1728 register U8 *a = (U8 *)s1;
1729 register U8 *b = (U8 *)s2;
79072805 1730 register I32 tmp;
7c0587c8
LW
1731
1732 while (len--) {
36477c24 1733 if (tmp = *a++ - *b++)
7c0587c8
LW
1734 return tmp;
1735 }
1736 return 0;
1737}
36477c24 1738#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 1739
fe14fcc3 1740#ifndef HAS_VPRINTF
a687059c 1741
85e6fe83 1742#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1743char *
1744#else
1745int
1746#endif
08105a92 1747vsprintf(char *dest, const char *pat, char *args)
a687059c
LW
1748{
1749 FILE fakebuf;
1750
1751 fakebuf._ptr = dest;
1752 fakebuf._cnt = 32767;
35c8bce7
LW
1753#ifndef _IOSTRG
1754#define _IOSTRG 0
1755#endif
a687059c
LW
1756 fakebuf._flag = _IOWRT|_IOSTRG;
1757 _doprnt(pat, args, &fakebuf); /* what a kludge */
1758 (void)putc('\0', &fakebuf);
85e6fe83 1759#ifdef USE_CHAR_VSPRINTF
a687059c
LW
1760 return(dest);
1761#else
1762 return 0; /* perl doesn't use return value */
1763#endif
1764}
1765
fe14fcc3 1766#endif /* HAS_VPRINTF */
a687059c
LW
1767
1768#ifdef MYSWAP
ffed7fef 1769#if BYTEORDER != 0x4321
a687059c 1770short
748a9306 1771my_swap(short s)
a687059c
LW
1772{
1773#if (BYTEORDER & 1) == 0
1774 short result;
1775
1776 result = ((s & 255) << 8) + ((s >> 8) & 255);
1777 return result;
1778#else
1779 return s;
1780#endif
1781}
1782
1783long
748a9306 1784my_htonl(long l)
a687059c
LW
1785{
1786 union {
1787 long result;
ffed7fef 1788 char c[sizeof(long)];
a687059c
LW
1789 } u;
1790
ffed7fef 1791#if BYTEORDER == 0x1234
a687059c
LW
1792 u.c[0] = (l >> 24) & 255;
1793 u.c[1] = (l >> 16) & 255;
1794 u.c[2] = (l >> 8) & 255;
1795 u.c[3] = l & 255;
1796 return u.result;
1797#else
ffed7fef 1798#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1799 croak("Unknown BYTEORDER\n");
a687059c 1800#else
79072805
LW
1801 register I32 o;
1802 register I32 s;
a687059c 1803
ffed7fef
LW
1804 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1805 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW
1806 }
1807 return u.result;
1808#endif
1809#endif
1810}
1811
1812long
748a9306 1813my_ntohl(long l)
a687059c
LW
1814{
1815 union {
1816 long l;
ffed7fef 1817 char c[sizeof(long)];
a687059c
LW
1818 } u;
1819
ffed7fef 1820#if BYTEORDER == 0x1234
a687059c
LW
1821 u.c[0] = (l >> 24) & 255;
1822 u.c[1] = (l >> 16) & 255;
1823 u.c[2] = (l >> 8) & 255;
1824 u.c[3] = l & 255;
1825 return u.l;
1826#else
ffed7fef 1827#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
463ee0b2 1828 croak("Unknown BYTEORDER\n");
a687059c 1829#else
79072805
LW
1830 register I32 o;
1831 register I32 s;
a687059c
LW
1832
1833 u.l = l;
1834 l = 0;
ffed7fef
LW
1835 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
1836 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW
1837 }
1838 return l;
1839#endif
1840#endif
1841}
1842
ffed7fef 1843#endif /* BYTEORDER != 0x4321 */
988174c1
LW
1844#endif /* MYSWAP */
1845
1846/*
1847 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
1848 * If these functions are defined,
1849 * the BYTEORDER is neither 0x1234 nor 0x4321.
1850 * However, this is not assumed.
1851 * -DWS
1852 */
1853
1854#define HTOV(name,type) \
1855 type \
1856 name (n) \
1857 register type n; \
1858 { \
1859 union { \
1860 type value; \
1861 char c[sizeof(type)]; \
1862 } u; \
79072805
LW
1863 register I32 i; \
1864 register I32 s; \
988174c1
LW
1865 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1866 u.c[i] = (n >> s) & 0xFF; \
1867 } \
1868 return u.value; \
1869 }
1870
1871#define VTOH(name,type) \
1872 type \
1873 name (n) \
1874 register type n; \
1875 { \
1876 union { \
1877 type value; \
1878 char c[sizeof(type)]; \
1879 } u; \
79072805
LW
1880 register I32 i; \
1881 register I32 s; \
988174c1
LW
1882 u.value = n; \
1883 n = 0; \
1884 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
1885 n += (u.c[i] & 0xFF) << s; \
1886 } \
1887 return n; \
1888 }
1889
1890#if defined(HAS_HTOVS) && !defined(htovs)
1891HTOV(htovs,short)
1892#endif
1893#if defined(HAS_HTOVL) && !defined(htovl)
1894HTOV(htovl,long)
1895#endif
1896#if defined(HAS_VTOHS) && !defined(vtohs)
1897VTOH(vtohs,short)
1898#endif
1899#if defined(HAS_VTOHL) && !defined(vtohl)
1900VTOH(vtohl,long)
1901#endif
a687059c 1902
5f05dabc 1903 /* VMS' my_popen() is in VMS.c, same with OS/2. */
092bebab 1904#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM)
760ac839 1905PerlIO *
8ac85365 1906my_popen(char *cmd, char *mode)
a687059c
LW
1907{
1908 int p[2];
8ac85365 1909 register I32 This, that;
79072805
LW
1910 register I32 pid;
1911 SV *sv;
1738f5c4 1912 I32 doexec = strNE(cmd,"-");
a687059c 1913
45bc9206 1914 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ
1915#ifdef OS2
1916 if (doexec) {
1917 return my_syspopen(cmd,mode);
1918 }
1919#endif
8ac85365
NIS
1920 This = (*mode == 'w');
1921 that = !This;
3280af22 1922 if (doexec && PL_tainting) {
bbce6d69
PP
1923 taint_env();
1924 taint_proper("Insecure %s%s", "EXEC");
d48672a2 1925 }
c2267164
IZ
1926 if (PerlProc_pipe(p) < 0)
1927 return Nullfp;
a687059c
LW
1928 while ((pid = (doexec?vfork():fork())) < 0) {
1929 if (errno != EAGAIN) {
6ad3d225 1930 PerlLIO_close(p[This]);
a687059c 1931 if (!doexec)
463ee0b2 1932 croak("Can't fork");
a687059c
LW
1933 return Nullfp;
1934 }
1935 sleep(5);
1936 }
1937 if (pid == 0) {
79072805
LW
1938 GV* tmpgv;
1939
30ac6d9b
GS
1940#undef THIS
1941#undef THAT
a687059c 1942#define THIS that
8ac85365 1943#define THAT This
6ad3d225 1944 PerlLIO_close(p[THAT]);
a687059c 1945 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS
1946 PerlLIO_dup2(p[THIS], *mode == 'r');
1947 PerlLIO_close(p[THIS]);
a687059c
LW
1948 }
1949 if (doexec) {
a0d0e21e 1950#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW
1951 int fd;
1952
1953#ifndef NOFILE
1954#define NOFILE 20
1955#endif
6b88bc9c 1956 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
6ad3d225 1957 PerlLIO_close(fd);
ae986130 1958#endif
a687059c 1959 do_exec(cmd); /* may or may not use the shell */
6ad3d225 1960 PerlProc__exit(1);
a687059c 1961 }
de3bb511 1962 /*SUPPRESS 560*/
85e6fe83 1963 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
1e422769 1964 sv_setiv(GvSV(tmpgv), (IV)getpid());
3280af22
NIS
1965 PL_forkprocess = 0;
1966 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW
1967 return Nullfp;
1968#undef THIS
1969#undef THAT
1970 }
62b28dd9 1971 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 1972 PerlLIO_close(p[that]);
8ac85365 1973 if (p[that] < p[This]) {
6ad3d225
GS
1974 PerlLIO_dup2(p[This], p[that]);
1975 PerlLIO_close(p[This]);
8ac85365 1976 p[This] = p[that];
62b28dd9 1977 }
3280af22 1978 sv = *av_fetch(PL_fdpid,p[This],TRUE);
a0d0e21e 1979 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 1980 SvIVX(sv) = pid;
3280af22 1981 PL_forkprocess = pid;
8ac85365 1982 return PerlIO_fdopen(p[This], mode);
a687059c 1983}
7c0587c8 1984#else
55497cff 1985#if defined(atarist) || defined(DJGPP)
7c0587c8 1986FILE *popen();
760ac839 1987PerlIO *
45bc9206 1988my_popen(char *cmd, char *mode)
7c0587c8 1989{
760ac839 1990 /* Needs work for PerlIO ! */
55497cff 1991 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 1992 PERL_FLUSHALL_FOR_CHILD;
55497cff 1993 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW
1994}
1995#endif
1996
1997#endif /* !DOSISH */
a687059c 1998
748a9306 1999#ifdef DUMP_FDS
35ff7856
GS
2000void
2001dump_fds(char *s)
ae986130
LW
2002{
2003 int fd;
2004 struct stat tmpstatbuf;
2005
760ac839 2006 PerlIO_printf(PerlIO_stderr(),"%s", s);
ae986130 2007 for (fd = 0; fd < 32; fd++) {
6ad3d225 2008 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
760ac839 2009 PerlIO_printf(PerlIO_stderr()," %d",fd);
ae986130 2010 }
760ac839 2011 PerlIO_printf(PerlIO_stderr(),"\n");
ae986130 2012}
35ff7856 2013#endif /* DUMP_FDS */
ae986130 2014
fe14fcc3 2015#ifndef HAS_DUP2
fec02dd3 2016int
a687059c
LW
2017dup2(oldfd,newfd)
2018int oldfd;
2019int newfd;
2020{
a0d0e21e 2021#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD
2022 if (oldfd == newfd)
2023 return oldfd;
6ad3d225 2024 PerlLIO_close(newfd);
fec02dd3 2025 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2026#else
fc36a67e
PP
2027#define DUP2_MAX_FDS 256
2028 int fdtmp[DUP2_MAX_FDS];
79072805 2029 I32 fdx = 0;
ae986130
LW
2030 int fd;
2031
fe14fcc3 2032 if (oldfd == newfd)
fec02dd3 2033 return oldfd;
6ad3d225 2034 PerlLIO_close(newfd);
fc36a67e 2035 /* good enough for low fd's... */
6ad3d225 2036 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2037 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2038 PerlLIO_close(fd);
fc36a67e
PP
2039 fd = -1;
2040 break;
2041 }
ae986130 2042 fdtmp[fdx++] = fd;
fc36a67e 2043 }
ae986130 2044 while (fdx > 0)
6ad3d225 2045 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2046 return fd;
62b28dd9 2047#endif
a687059c
LW
2048}
2049#endif
2050
ff68c719
PP
2051
2052#ifdef HAS_SIGACTION
2053
2054Sighandler_t
8ac85365 2055rsignal(int signo, Sighandler_t handler)
ff68c719
PP
2056{
2057 struct sigaction act, oact;
2058
2059 act.sa_handler = handler;
2060 sigemptyset(&act.sa_mask);
2061 act.sa_flags = 0;
2062#ifdef SA_RESTART
2063 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2064#endif
85264bed
CS
2065#ifdef SA_NOCLDWAIT
2066 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2067 act.sa_flags |= SA_NOCLDWAIT;
2068#endif
ff68c719 2069 if (sigaction(signo, &act, &oact) == -1)
36477c24 2070 return SIG_ERR;
ff68c719 2071 else
36477c24 2072 return oact.sa_handler;
ff68c719
PP
2073}
2074
2075Sighandler_t
8ac85365 2076rsignal_state(int signo)
ff68c719
PP
2077{
2078 struct sigaction oact;
2079
2080 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2081 return SIG_ERR;
2082 else
2083 return oact.sa_handler;
2084}
2085
2086int
8ac85365 2087rsignal_save(int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719
PP
2088{
2089 struct sigaction act;
2090
2091 act.sa_handler = handler;
2092 sigemptyset(&act.sa_mask);
2093 act.sa_flags = 0;
2094#ifdef SA_RESTART
2095 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2096#endif
85264bed
CS
2097#ifdef SA_NOCLDWAIT
2098 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2099 act.sa_flags |= SA_NOCLDWAIT;
2100#endif
ff68c719
PP
2101 return sigaction(signo, &act, save);
2102}
2103
2104int
8ac85365 2105rsignal_restore(int signo, Sigsave_t *save)
ff68c719
PP
2106{
2107 return sigaction(signo, save, (struct sigaction *)NULL);
2108}
2109
2110#else /* !HAS_SIGACTION */
2111
2112Sighandler_t
4e35701f 2113rsignal(int signo, Sighandler_t handler)
ff68c719 2114{
6ad3d225 2115 return PerlProc_signal(signo, handler);
ff68c719
PP
2116}
2117
2118static int sig_trapped;
2119
2120static
2121Signal_t
4e35701f 2122sig_trap(int signo)
ff68c719
PP
2123{
2124 sig_trapped++;
2125}
2126
2127Sighandler_t
4e35701f 2128rsignal_state(int signo)
ff68c719
PP
2129{
2130 Sighandler_t oldsig;
2131
2132 sig_trapped = 0;
6ad3d225
GS
2133 oldsig = PerlProc_signal(signo, sig_trap);
2134 PerlProc_signal(signo, oldsig);
ff68c719 2135 if (sig_trapped)
6ad3d225 2136 PerlProc_kill(getpid(), signo);
ff68c719
PP
2137 return oldsig;
2138}
2139
2140int
4e35701f 2141rsignal_save(int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2142{
6ad3d225 2143 *save = PerlProc_signal(signo, handler);
ff68c719
PP
2144 return (*save == SIG_ERR) ? -1 : 0;
2145}
2146
2147int
4e35701f 2148rsignal_restore(int signo, Sigsave_t *save)
ff68c719 2149{
6ad3d225 2150 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719
PP
2151}
2152
2153#endif /* !HAS_SIGACTION */
2154
5f05dabc 2155 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
092bebab 2156#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM)
79072805 2157I32
6acef3b7 2158my_pclose(PerlIO *ptr)
a687059c 2159{
ff68c719 2160 Sigsave_t hstat, istat, qstat;
a687059c 2161 int status;
a0d0e21e 2162 SV **svp;
20188a90 2163 int pid;
1d3434b8 2164 int pid2;
03136e13
CS
2165 bool close_failed;
2166 int saved_errno;
2167#ifdef VMS
2168 int saved_vaxc_errno;
2169#endif
22fae026
TM
2170#ifdef WIN32
2171 int saved_win32_errno;
2172#endif
a687059c 2173
3280af22 2174 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
748a9306 2175 pid = (int)SvIVX(*svp);
a0d0e21e 2176 SvREFCNT_dec(*svp);
3280af22 2177 *svp = &PL_sv_undef;
ddcf38b7
IZ
2178#ifdef OS2
2179 if (pid == -1) { /* Opened by popen. */
2180 return my_syspclose(ptr);
2181 }
2182#endif
03136e13
CS
2183 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2184 saved_errno = errno;
2185#ifdef VMS
2186 saved_vaxc_errno = vaxc$errno;
2187#endif
22fae026
TM
2188#ifdef WIN32
2189 saved_win32_errno = GetLastError();
2190#endif
03136e13 2191 }
7c0587c8 2192#ifdef UTS
6ad3d225 2193 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2194#endif
ff68c719
PP
2195 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2196 rsignal_save(SIGINT, SIG_IGN, &istat);
2197 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306 2198 do {
1d3434b8
GS
2199 pid2 = wait4pid(pid, &status, 0);
2200 } while (pid2 == -1 && errno == EINTR);
ff68c719
PP
2201 rsignal_restore(SIGHUP, &hstat);
2202 rsignal_restore(SIGINT, &istat);
2203 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS
2204 if (close_failed) {
2205 SETERRNO(saved_errno, saved_vaxc_errno);
2206 return -1;
2207 }
1d3434b8 2208 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2209}
4633a7c4
LW
2210#endif /* !DOSISH */
2211
8736538c 2212#if !defined(DOSISH) || defined(OS2) || defined(WIN32) || defined(CYGWIN32)
79072805 2213I32
8ac85365 2214wait4pid(int pid, int *statusp, int flags)
20188a90 2215{
79072805
LW
2216 SV *sv;
2217 SV** svp;
fc36a67e 2218 char spid[TYPE_CHARS(int)];
20188a90
LW
2219
2220 if (!pid)
2221 return -1;
20188a90
LW
2222 if (pid > 0) {
2223 sprintf(spid, "%d", pid);
3280af22
NIS
2224 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2225 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2226 *statusp = SvIVX(*svp);
3280af22 2227 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2228 return pid;
2229 }
2230 }
2231 else {
79072805 2232 HE *entry;
20188a90 2233
3280af22
NIS
2234 hv_iterinit(PL_pidstatus);
2235 if (entry = hv_iternext(PL_pidstatus)) {
a0d0e21e 2236 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2237 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2238 *statusp = SvIVX(sv);
20188a90 2239 sprintf(spid, "%d", pid);
3280af22 2240 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2241 return pid;
2242 }
2243 }
79072805 2244#ifdef HAS_WAITPID
367f3c24
IZ
2245# ifdef HAS_WAITPID_RUNTIME
2246 if (!HAS_WAITPID_RUNTIME)
2247 goto hard_way;
2248# endif
f55ee38a 2249 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ
2250#endif
2251#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2252 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ
2253#endif
2254#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2255 hard_way:
a0d0e21e
LW
2256 {
2257 I32 result;
2258 if (flags)
2259 croak("Can't do waitpid with flags");
2260 else {
76e3520e 2261 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW
2262 pidgone(result,*statusp);
2263 if (result < 0)
2264 *statusp = -1;
2265 }
2266 return result;
a687059c
LW
2267 }
2268#endif
a687059c 2269}
2d7a9237 2270#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2271
7c0587c8 2272void
de3bb511 2273/*SUPPRESS 590*/
8ac85365 2274pidgone(int pid, int status)
a687059c 2275{
79072805 2276 register SV *sv;
fc36a67e 2277 char spid[TYPE_CHARS(int)];
a687059c 2278
20188a90 2279 sprintf(spid, "%d", pid);
3280af22 2280 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2281 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2282 SvIVX(sv) = status;
20188a90 2283 return;
a687059c
LW
2284}
2285
55497cff 2286#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2287int pclose();
ddcf38b7
IZ
2288#ifdef HAS_FORK
2289int /* Cannot prototype with I32
2290 in os2ish.h. */
2291my_syspclose(ptr)
2292#else
79072805
LW
2293I32
2294my_pclose(ptr)
ddcf38b7 2295#endif
760ac839 2296PerlIO *ptr;
a687059c 2297{
760ac839
LW
2298 /* Needs work for PerlIO ! */
2299 FILE *f = PerlIO_findFILE(ptr);
2300 I32 result = pclose(f);
2301 PerlIO_releaseFILE(ptr,f);
2302 return result;
a687059c 2303}
7c0587c8 2304#endif
9f68db38
LW
2305
2306void
08105a92 2307repeatcpy(register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2308{
79072805 2309 register I32 todo;
08105a92 2310 register const char *frombase = from;
9f68db38
LW
2311
2312 if (len == 1) {
08105a92 2313 register const char c = *from;
9f68db38 2314 while (count-- > 0)
5926133d 2315 *to++ = c;
9f68db38
LW
2316 return;
2317 }
2318 while (count-- > 0) {
2319 for (todo = len; todo > 0; todo--) {
2320 *to++ = *from++;
2321 }
2322 from = frombase;
2323 }
2324}
0f85fab0 2325
463ee0b2 2326U32
22c35a8c 2327cast_ulong(double f)
0f85fab0
LW
2328{
2329 long along;
2330
27e2fb84 2331#if CASTFLAGS & 2
34de22dd
LW
2332# define BIGDOUBLE 2147483648.0
2333 if (f >= BIGDOUBLE)
2334 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2335#endif
0f85fab0
LW
2336 if (f >= 0.0)
2337 return (unsigned long)f;
2338 along = (long)f;
2339 return (unsigned long)along;
2340}
ed6116ce 2341# undef BIGDOUBLE
5d94fbed 2342
5d94fbed
AD
2343/* Unfortunately, on some systems the cast_uv() function doesn't
2344 work with the system-supplied definition of ULONG_MAX. The
2345 comparison (f >= ULONG_MAX) always comes out true. It must be a
2346 problem with the compiler constant folding.
2347
2348 In any case, this workaround should be fine on any two's complement
2349 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2350 ccflags.
2351 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2352*/
1eb770ff
PP
2353
2354/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2355 of LONG_(MIN/MAX).
2356 -- Kenneth Albanowski <kjahds@kjahds.com>
2357*/
2358
20cec16a
PP
2359#ifndef MY_UV_MAX
2360# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD
2361#endif
2362
ed6116ce 2363I32
22c35a8c 2364cast_i32(double f)
ed6116ce 2365{
20cec16a
PP
2366 if (f >= I32_MAX)
2367 return (I32) I32_MAX;
2368 if (f <= I32_MIN)
2369 return (I32) I32_MIN;
ed6116ce
LW
2370 return (I32) f;
2371}
a0d0e21e
LW
2372
2373IV
22c35a8c 2374cast_iv(double f)
a0d0e21e 2375{
20cec16a
PP
2376 if (f >= IV_MAX)
2377 return (IV) IV_MAX;
2378 if (f <= IV_MIN)
2379 return (IV) IV_MIN;
a0d0e21e
LW
2380 return (IV) f;
2381}
5d94fbed
AD
2382
2383UV
22c35a8c 2384cast_uv(double f)
5d94fbed 2385{
20cec16a
PP
2386 if (f >= MY_UV_MAX)
2387 return (UV) MY_UV_MAX;
5d94fbed
AD
2388 return (UV) f;
2389}
2390
fe14fcc3 2391#ifndef HAS_RENAME
79072805 2392I32
22c35a8c 2393same_dirent(char *a, char *b)
62b28dd9 2394{
93a17b20
LW
2395 char *fa = strrchr(a,'/');
2396 char *fb = strrchr(b,'/');
62b28dd9
LW
2397 struct stat tmpstatbuf1;
2398 struct stat tmpstatbuf2;
46fc3d4c 2399 SV *tmpsv = sv_newmortal();
62b28dd9
LW
2400
2401 if (fa)
2402 fa++;
2403 else
2404 fa = a;
2405 if (fb)
2406 fb++;
2407 else
2408 fb = b;
2409 if (strNE(a,b))
2410 return FALSE;
2411 if (fa == a)
46fc3d4c 2412 sv_setpv(tmpsv, ".");
62b28dd9 2413 else
46fc3d4c 2414 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2415 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW
2416 return FALSE;
2417 if (fb == b)
46fc3d4c 2418 sv_setpv(tmpsv, ".");
62b28dd9 2419 else
46fc3d4c 2420 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2421 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW
2422 return FALSE;
2423 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2424 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2425}
fe14fcc3
LW
2426#endif /* !HAS_RENAME */
2427
55497cff 2428UV
4f19785b
WSI
2429scan_bin(char *start, I32 len, I32 *retlen)
2430{
2431 register char *s = start;
2432 register UV retval = 0;
2433 bool overflowed = FALSE;
2434 while (len && *s >= '0' && *s <= '1') {
2435 register UV n = retval << 1;
2436 if (!overflowed && (n >> 1) != retval) {
2437 warn("Integer overflow in binary number");
2438 overflowed = TRUE;
2439 }
2440 retval = n | (*s++ - '0');
2441 len--;
2442 }
6529e8bd 2443 if (len && (*s >= '2' && *s <= '9')) {
4f19785b
WSI
2444 dTHR;
2445 if (ckWARN(WARN_UNSAFE))
399388f4 2446 warner(WARN_UNSAFE, "Illegal binary digit '%c' ignored", *s);
4f19785b
WSI
2447 }
2448 *retlen = s - start;
2449 return retval;
2450}
2451UV
8ac85365 2452scan_oct(char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2453{
2454 register char *s = start;
55497cff
PP
2455 register UV retval = 0;
2456 bool overflowed = FALSE;
fe14fcc3 2457
748a9306 2458 while (len && *s >= '0' && *s <= '7') {
55497cff
PP
2459 register UV n = retval << 3;
2460 if (!overflowed && (n >> 3) != retval) {
2461 warn("Integer overflow in octal number");
2462 overflowed = TRUE;
2463 }
2464 retval = n | (*s++ - '0');
748a9306 2465 len--;
fe14fcc3 2466 }
d008e5eb
GS
2467 if (len && (*s == '8' || *s == '9')) {
2468 dTHR;
2469 if (ckWARN(WARN_OCTAL))
399388f4 2470 warner(WARN_OCTAL, "Illegal octal digit '%c' ignored", *s);
d008e5eb 2471 }
fe14fcc3
LW
2472 *retlen = s - start;
2473 return retval;
2474}
2475
71be2cbc 2476UV
8ac85365 2477scan_hex(char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2478{
2479 register char *s = start;
55497cff
PP
2480 register UV retval = 0;
2481 bool overflowed = FALSE;
6ff81951 2482 char *tmp = s;
a0ed51b3 2483 register UV n;
fe14fcc3 2484
a0ed51b3
LW
2485 while (len-- && *s) {
2486 tmp = strchr((char *) PL_hexdigit, *s++);
2487 if (!tmp) {
e3fdf988 2488 if (*(s-1) == '_' || (*(s-1) == 'x' && retval == 0))
a0ed51b3
LW
2489 continue;
2490 else {
d008e5eb 2491 dTHR;
a0ed51b3 2492 --s;
599cee73 2493 if (ckWARN(WARN_UNSAFE))
399388f4 2494 warner(WARN_UNSAFE,"Illegal hex digit '%c' ignored", *s);
a0ed51b3
LW
2495 break;
2496 }
2497 }
2498 n = retval << 4;
55497cff
PP
2499 if (!overflowed && (n >> 4) != retval) {
2500 warn("Integer overflow in hex number");
2501 overflowed = TRUE;
2502 }
3280af22 2503 retval = n | ((tmp - PL_hexdigit) & 15);
6ff81951 2504 }
fe14fcc3
LW
2505 *retlen = s - start;
2506 return retval;
2507}
760ac839 2508
491527d0
GS
2509char*
2510find_script(char *scriptname, bool dosearch, char **search_ext, I32 flags)
2511{
2512 dTHR;
2513 char *xfound = Nullch;
2514 char *xfailed = Nullch;
0f31cffe 2515 char tmpbuf[MAXPATHLEN];
491527d0
GS
2516 register char *s;
2517 I32 len;
2518 int retval;
2519#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
2520# define SEARCH_EXTS ".bat", ".cmd", NULL
2521# define MAX_EXT_LEN 4
2522#endif
2523#ifdef OS2
2524# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
2525# define MAX_EXT_LEN 4
2526#endif
2527#ifdef VMS
2528# define SEARCH_EXTS ".pl", ".com", NULL
2529# define MAX_EXT_LEN 4
2530#endif
2531 /* additional extensions to try in each dir if scriptname not found */
2532#ifdef SEARCH_EXTS
2533 char *exts[] = { SEARCH_EXTS };
2534 char **ext = search_ext ? search_ext : exts;
2535 int extidx = 0, i = 0;
2536 char *curext = Nullch;
2537#else
2538# define MAX_EXT_LEN 0
2539#endif
2540
2541 /*
2542 * If dosearch is true and if scriptname does not contain path
2543 * delimiters, search the PATH for scriptname.
2544 *
2545 * If SEARCH_EXTS is also defined, will look for each
2546 * scriptname{SEARCH_EXTS} whenever scriptname is not found
2547 * while searching the PATH.
2548 *
2549 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
2550 * proceeds as follows:
2551 * If DOSISH or VMSISH:
2552 * + look for ./scriptname{,.foo,.bar}
2553 * + search the PATH for scriptname{,.foo,.bar}
2554 *
2555 * If !DOSISH:
2556 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
2557 * this will not look in '.' if it's not in the PATH)
2558 */
84486fc6 2559 tmpbuf[0] = '\0';
491527d0
GS
2560
2561#ifdef VMS
2562# ifdef ALWAYS_DEFTYPES
2563 len = strlen(scriptname);
2564 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
2565 int hasdir, idx = 0, deftypes = 1;
2566 bool seen_dot = 1;
2567
2568 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
2569# else
2570 if (dosearch) {
2571 int hasdir, idx = 0, deftypes = 1;
2572 bool seen_dot = 1;
2573
2574 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
2575# endif
2576 /* The first time through, just add SEARCH_EXTS to whatever we
2577 * already have, so we can check for default file types. */
2578 while (deftypes ||
84486fc6 2579 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS
2580 {
2581 if (deftypes) {
2582 deftypes = 0;
84486fc6 2583 *tmpbuf = '\0';
491527d0 2584 }
84486fc6
GS
2585 if ((strlen(tmpbuf) + strlen(scriptname)
2586 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 2587 continue; /* don't search dir with too-long name */
84486fc6 2588 strcat(tmpbuf, scriptname);
491527d0
GS
2589#else /* !VMS */
2590
2591#ifdef DOSISH
2592 if (strEQ(scriptname, "-"))
2593 dosearch = 0;
2594 if (dosearch) { /* Look in '.' first. */
2595 char *cur = scriptname;
2596#ifdef SEARCH_EXTS
2597 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
2598 while (ext[i])
2599 if (strEQ(ext[i++],curext)) {
2600 extidx = -1; /* already has an ext */
2601 break;
2602 }
2603 do {
2604#endif
2605 DEBUG_p(PerlIO_printf(Perl_debug_log,
2606 "Looking for %s\n",cur));
017f25f1
IZ
2607 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
2608 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS
2609 dosearch = 0;
2610 scriptname = cur;
2611#ifdef SEARCH_EXTS
2612 break;
2613#endif
2614 }
2615#ifdef SEARCH_EXTS
2616 if (cur == scriptname) {
2617 len = strlen(scriptname);
84486fc6 2618 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 2619 break;
84486fc6 2620 cur = strcpy(tmpbuf, scriptname);
491527d0
GS
2621 }
2622 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 2623 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS
2624#endif
2625 }
2626#endif
2627
2628 if (dosearch && !strchr(scriptname, '/')
2629#ifdef DOSISH
2630 && !strchr(scriptname, '\\')
2631#endif
2632 && (s = PerlEnv_getenv("PATH"))) {
2633 bool seen_dot = 0;
2634
3280af22
NIS
2635 PL_bufend = s + strlen(s);
2636 while (s < PL_bufend) {
491527d0
GS
2637#if defined(atarist) || defined(DOSISH)
2638 for (len = 0; *s
2639# ifdef atarist
2640 && *s != ','
2641# endif
2642 && *s != ';'; len++, s++) {
84486fc6
GS
2643 if (len < sizeof tmpbuf)
2644 tmpbuf[len] = *s;
491527d0 2645 }
84486fc6
GS
2646 if (len < sizeof tmpbuf)
2647 tmpbuf[len] = '\0';
491527d0 2648#else /* ! (atarist || DOSISH) */
3280af22 2649 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS
2650 ':',
2651 &len);
2652#endif /* ! (atarist || DOSISH) */
3280af22 2653 if (s < PL_bufend)
491527d0 2654 s++;
84486fc6 2655 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0
GS
2656 continue; /* don't search dir with too-long name */
2657 if (len
61ae2fbf 2658#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS
2659 && tmpbuf[len - 1] != '/'
2660 && tmpbuf[len - 1] != '\\'
491527d0
GS
2661#endif
2662 )
84486fc6
GS
2663 tmpbuf[len++] = '/';
2664 if (len == 2 && tmpbuf[0] == '.')
491527d0 2665 seen_dot = 1;
84486fc6 2666 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS
2667#endif /* !VMS */
2668
2669#ifdef SEARCH_EXTS
84486fc6 2670 len = strlen(tmpbuf);
491527d0
GS
2671 if (extidx > 0) /* reset after previous loop */
2672 extidx = 0;
2673 do {
2674#endif
84486fc6 2675 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 2676 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ
2677 if (S_ISDIR(PL_statbuf.st_mode)) {
2678 retval = -1;
2679 }
491527d0
GS
2680#ifdef SEARCH_EXTS
2681 } while ( retval < 0 /* not there */
2682 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 2683 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS
2684 );
2685#endif
2686 if (retval < 0)
2687 continue;
3280af22
NIS
2688 if (S_ISREG(PL_statbuf.st_mode)
2689 && cando(S_IRUSR,TRUE,&PL_statbuf)
491527d0 2690#ifndef DOSISH
3280af22 2691 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS
2692#endif
2693 )
2694 {
84486fc6 2695 xfound = tmpbuf; /* bingo! */
491527d0
GS
2696 break;
2697 }
2698 if (!xfailed)
84486fc6 2699 xfailed = savepv(tmpbuf);
491527d0
GS
2700 }
2701#ifndef DOSISH
017f25f1
IZ
2702 if (!xfound && !seen_dot && !xfailed &&
2703 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
2704 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS
2705#endif
2706 seen_dot = 1; /* Disable message. */
9ccb31f9
GS
2707 if (!xfound) {
2708 if (flags & 1) { /* do or die? */
2709 croak("Can't %s %s%s%s",
2710 (xfailed ? "execute" : "find"),
2711 (xfailed ? xfailed : scriptname),
2712 (xfailed ? "" : " on PATH"),
2713 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
2714 }
2715 scriptname = Nullch;
2716 }
491527d0
GS
2717 if (xfailed)
2718 Safefree(xfailed);
2719 scriptname = xfound;
2720 }
9ccb31f9 2721 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS
2722}
2723
2724
11343788 2725#ifdef USE_THREADS
12ca11f6
MB
2726#ifdef FAKE_THREADS
2727/* Very simplistic scheduler for now */
2728void
2729schedule(void)
2730{
c7848ba1 2731 thr = thr->i.next_run;
12ca11f6
MB
2732}
2733
2734void
22c35a8c 2735perl_cond_init(perl_cond *cp)
12ca11f6
MB
2736{
2737 *cp = 0;
2738}
2739
2740void
22c35a8c 2741perl_cond_signal(perl_cond *cp)
12ca11f6 2742{
51dd5992 2743 perl_os_thread t;
12ca11f6
MB
2744 perl_cond cond = *cp;
2745
2746 if (!cond)
2747 return;
2748 t = cond->thread;
2749 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
2750 t->i.next_run = thr->i.next_run;
2751 thr->i.next_run->i.prev_run = t;
2752 t->i.prev_run = thr;
2753 thr->i.next_run = t;
2754 thr->i.wait_queue = 0;
12ca11f6
MB
2755 /* Remove from the wait queue */
2756 *cp = cond->next;
2757 Safefree(cond);
2758}
2759
2760void
22c35a8c 2761perl_cond_broadcast(perl_cond *cp)
12ca11f6 2762{
51dd5992 2763 perl_os_thread t;
12ca11f6
MB
2764 perl_cond cond, cond_next;
2765
2766 for (cond = *cp; cond; cond = cond_next) {
2767 t = cond->thread;
2768 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
2769 t->i.next_run = thr->i.next_run;
2770 thr->i.next_run->i.prev_run = t;
2771 t->i.prev_run = thr;
2772 thr->i.next_run = t;
2773 thr->i.wait_queue = 0;
12ca11f6
MB
2774 /* Remove from the wait queue */
2775 cond_next = cond->next;
2776 Safefree(cond);
2777 }
2778 *cp = 0;
2779}
2780
2781void
22c35a8c 2782perl_cond_wait(perl_cond *cp)
12ca11f6
MB
2783{
2784 perl_cond cond;
2785
c7848ba1 2786 if (thr->i.next_run == thr)
12ca11f6
MB
2787 croak("panic: perl_cond_wait called by last runnable thread");
2788
0f15f207 2789 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB
2790 cond->thread = thr;
2791 cond->next = *cp;
2792 *cp = cond;
c7848ba1 2793 thr->i.wait_queue = cond;
12ca11f6 2794 /* Remove ourselves from runnable queue */
c7848ba1
MB
2795 thr->i.next_run->i.prev_run = thr->i.prev_run;
2796 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB
2797}
2798#endif /* FAKE_THREADS */
2799
0d85d877 2800#ifdef PTHREAD_GETSPECIFIC_INT
52e1cb5e 2801struct perl_thread *
11343788
MB
2802getTHR _((void))
2803{
2804 pthread_addr_t t;
2805
6b88bc9c 2806 if (pthread_getspecific(PL_thr_key, &t))
11343788 2807 croak("panic: pthread_getspecific");
52e1cb5e 2808 return (struct perl_thread *) t;
11343788 2809}
0d85d877 2810#endif
f93b4edd
MB
2811
2812MAGIC *
8ac85365 2813condpair_magic(SV *sv)
f93b4edd
MB
2814{
2815 MAGIC *mg;
2816
2817 SvUPGRADE(sv, SVt_PVMG);
2818 mg = mg_find(sv, 'm');
2819 if (!mg) {
2820 condpair_t *cp;
2821
2822 New(53, cp, 1, condpair_t);
2823 MUTEX_INIT(&cp->mutex);
2824 COND_INIT(&cp->owner_cond);
2825 COND_INIT(&cp->cond);
2826 cp->owner = 0;
28a8573f 2827 MUTEX_LOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB
2828 mg = mg_find(sv, 'm');
2829 if (mg) {
2830 /* someone else beat us to initialising it */
28a8573f 2831 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB
2832 MUTEX_DESTROY(&cp->mutex);
2833 COND_DESTROY(&cp->owner_cond);
2834 COND_DESTROY(&cp->cond);
2835 Safefree(cp);
2836 }
2837 else {
2838 sv_magic(sv, Nullsv, 'm', 0, 0);
2839 mg = SvMAGIC(sv);
2840 mg->mg_ptr = (char *)cp;
565764a8 2841 mg->mg_len = sizeof(cp);
28a8573f 2842 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
8b73bbec 2843 DEBUG_S(WITH_THR(PerlIO_printf(PerlIO_stderr(),
c7848ba1 2844 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB
2845 }
2846 }
2847 return mg;
2848}
a863c7d1
MB
2849
2850/*
199100c8
MB
2851 * Make a new perl thread structure using t as a prototype. Some of the
2852 * fields for the new thread are copied from the prototype thread, t,
2853 * so t should not be running in perl at the time this function is
2854 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
2855 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 2856 */
52e1cb5e
JH
2857struct perl_thread *
2858new_struct_thread(struct perl_thread *t)
a863c7d1 2859{
52e1cb5e 2860 struct perl_thread *thr;
a863c7d1 2861 SV *sv;
199100c8
MB
2862 SV **svp;
2863 I32 i;
2864
79cb57f6 2865 sv = newSVpvn("", 0);
52e1cb5e
JH
2866 SvGROW(sv, sizeof(struct perl_thread) + 1);
2867 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 2868 thr = (Thread) SvPVX(sv);
949ced2d 2869#ifdef DEBUGGING
52e1cb5e 2870 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS
2871 PL_markstack = 0;
2872 PL_scopestack = 0;
2873 PL_savestack = 0;
2874 PL_retstack = 0;
2875 PL_dirty = 0;
2876 PL_localizing = 0;
949ced2d
GS
2877 Zero(&PL_hv_fetch_ent_mh, 1, HE);
2878#else
2879 Zero(thr, 1, struct perl_thread);
2880#endif
199100c8
MB
2881
2882 thr->oursv = sv;
d55594ae 2883 init_stacks(ARGS);
a863c7d1 2884
533c011a 2885 PL_curcop = &PL_compiling;
199100c8 2886 thr->cvcache = newHV();
54b9620d 2887 thr->threadsv = newAV();
a863c7d1 2888 thr->specific = newAV();
79cb57f6 2889 thr->errsv = newSVpvn("", 0);
38a03e6e 2890 thr->errhv = newHV();
a863c7d1
MB
2891 thr->flags = THRf_R_JOINABLE;
2892 MUTEX_INIT(&thr->mutex);
199100c8 2893
d55594ae
GS
2894 /* top_env needs to be non-zero. It points to an area
2895 in which longjmp() stuff is stored, as C callstack
2896 info there at least is thread specific this has to
2897 be per-thread. Otherwise a 'die' in a thread gives
2898 that thread the C stack of last thread to do an eval {}!
2899 See comments in scope.h
2900 Initialize top entry (as in perl.c for main thread)
2901 */
533c011a
NIS
2902 PL_start_env.je_prev = NULL;
2903 PL_start_env.je_ret = -1;
2904 PL_start_env.je_mustcatch = TRUE;
2905 PL_top_env = &PL_start_env;
2906
2907 PL_in_eval = FALSE;
2908 PL_restartop = 0;
2909
b099ddc0
GS
2910 PL_statname = NEWSV(66,0);
2911 PL_maxscream = -1;
2912 PL_regcompp = FUNC_NAME_TO_PTR(pregcomp);
2913 PL_regexecp = FUNC_NAME_TO_PTR(regexec_flags);
2914 PL_regindent = 0;
2915 PL_reginterp_cnt = 0;
2916 PL_lastscream = Nullsv;
2917 PL_screamfirst = 0;
2918 PL_screamnext = 0;
2919 PL_reg_start_tmp = 0;
2920 PL_reg_start_tmpl = 0;
2921
2922 /* parent thread's data needs to be locked while we make copy */
2923 MUTEX_LOCK(&t->mutex);
2924
2925 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
2926 PL_defstash = t->Tdefstash; /* XXX maybe these should */
2927 PL_curstash = t->Tcurstash; /* always be set to main? */
2928
6b88bc9c 2929 PL_tainted = t->Ttainted;
84fee439
NIS
2930 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
2931 PL_nrs = newSVsv(t->Tnrs);
2932 PL_rs = SvREFCNT_inc(PL_nrs);
2933 PL_last_in_gv = Nullgv;
2934 PL_ofslen = t->Tofslen;
2935 PL_ofs = savepvn(t->Tofs, PL_ofslen);
2936 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
2937 PL_chopset = t->Tchopset;
2938 PL_formtarget = newSVsv(t->Tformtarget);
2939 PL_bodytarget = newSVsv(t->Tbodytarget);
2940 PL_toptarget = newSVsv(t->Ttoptarget);
533c011a 2941
54b9620d
MB
2942 /* Initialise all per-thread SVs that the template thread used */
2943 svp = AvARRAY(t->threadsv);
93965878 2944 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 2945 if (*svp && *svp != &PL_sv_undef) {
199100c8 2946 SV *sv = newSVsv(*svp);
54b9620d 2947 av_store(thr->threadsv, i, sv);
533c011a 2948 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
8b73bbec 2949 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
54b9620d 2950 "new_struct_thread: copied threadsv %d %p->%p\n",i, t, thr));
199100c8
MB
2951 }
2952 }
940cb80d 2953 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 2954
533c011a
NIS
2955 MUTEX_LOCK(&PL_threads_mutex);
2956 PL_nthreads++;
2957 thr->tid = ++PL_threadnum;
199100c8
MB
2958 thr->next = t->next;
2959 thr->prev = t;
2960 t->next = thr;
2961 thr->next->prev = thr;
533c011a 2962 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 2963
b099ddc0
GS
2964 /* done copying parent's state */
2965 MUTEX_UNLOCK(&t->mutex);
2966
a863c7d1
MB
2967#ifdef HAVE_THREAD_INTERN
2968 init_thread_intern(thr);
a863c7d1 2969#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB
2970 return thr;
2971}
11343788 2972#endif /* USE_THREADS */
760ac839
LW
2973
2974#ifdef HUGE_VAL
2975/*
2976 * This hack is to force load of "huge" support from libm.a
2977 * So it is in perl for (say) POSIX to use.
2978 * Needed for SunOS with Sun's 'acc' for example.
2979 */
2980double
8ac85365 2981Perl_huge(void)
760ac839
LW
2982{
2983 return HUGE_VAL;
2984}
2985#endif
4e35701f 2986
22239a37
NIS
2987#ifdef PERL_GLOBAL_STRUCT
2988struct perl_vars *
2989Perl_GetVars(void)
2990{
533c011a 2991 return &PL_Vars;
22239a37 2992}
31fb1209
NIS
2993#endif
2994
2995char **
2996get_op_names(void)
2997{
22c35a8c 2998 return PL_op_name;
31fb1209
NIS
2999}
3000
3001char **
3002get_op_descs(void)
3003{
22c35a8c 3004 return PL_op_desc;
31fb1209 3005}
9e6b2b00
GS
3006
3007char *
3008get_no_modify(void)
3009{
22c35a8c 3010 return (char*)PL_no_modify;
9e6b2b00
GS
3011}
3012
3013U32 *
3014get_opargs(void)
3015{
22c35a8c 3016 return PL_opargs;
9e6b2b00 3017}
51aa15f3 3018
51aa15f3
GS
3019SV **
3020get_specialsv_list(void)
3021{
3280af22 3022 return PL_specialsv_list;
f55ee38a 3023}
dc9e4912 3024
f675dbe5
CB
3025#ifndef HAS_GETENV_SV
3026SV *
3027getenv_sv(char *env_elem)
3028{
3029 char *env_trans;
3030 SV *temp_sv;
3031 if ((env_trans = PerlEnv_getenv(env_elem)) != Nullch) {
3032 temp_sv = newSVpv(env_trans, strlen(env_trans));
3033 return temp_sv;
3034 } else {
3035 return &PL_sv_undef;
3036 }
3037}
3038#endif
3039
dc9e4912
GS
3040
3041MGVTBL*
3042get_vtbl(int vtbl_id)
3043{
3044 MGVTBL* result = Null(MGVTBL*);
3045
3046 switch(vtbl_id) {
3047 case want_vtbl_sv:
3048 result = &PL_vtbl_sv;
3049 break;
3050 case want_vtbl_env:
3051 result = &PL_vtbl_env;
3052 break;
3053 case want_vtbl_envelem:
3054 result = &PL_vtbl_envelem;
3055 break;
3056 case want_vtbl_sig:
3057 result = &PL_vtbl_sig;
3058 break;
3059 case want_vtbl_sigelem:
3060 result = &PL_vtbl_sigelem;
3061 break;
3062 case want_vtbl_pack:
3063 result = &PL_vtbl_pack;
3064 break;
3065 case want_vtbl_packelem:
3066 result = &PL_vtbl_packelem;
3067 break;
3068 case want_vtbl_dbline:
3069 result = &PL_vtbl_dbline;
3070 break;
3071 case want_vtbl_isa:
3072 result = &PL_vtbl_isa;
3073 break;
3074 case want_vtbl_isaelem:
3075 result = &PL_vtbl_isaelem;
3076 break;
3077 case want_vtbl_arylen:
3078 result = &PL_vtbl_arylen;
3079 break;
3080 case want_vtbl_glob:
3081 result = &PL_vtbl_glob;
3082 break;
3083 case want_vtbl_mglob:
3084 result = &PL_vtbl_mglob;
3085 break;
3086 case want_vtbl_nkeys:
3087 result = &PL_vtbl_nkeys;
3088 break;
3089 case want_vtbl_taint:
3090 result = &PL_vtbl_taint;
3091 break;
3092 case want_vtbl_substr:
3093 result = &PL_vtbl_substr;
3094 break;
3095 case want_vtbl_vec:
3096 result = &PL_vtbl_vec;
3097 break;
3098 case want_vtbl_pos:
3099 result = &PL_vtbl_pos;
3100 break;
3101 case want_vtbl_bm:
3102 result = &PL_vtbl_bm;
3103 break;
3104 case want_vtbl_fm:
3105 result = &PL_vtbl_fm;
3106 break;
3107 case want_vtbl_uvar:
3108 result = &PL_vtbl_uvar;
3109 break;
3110#ifdef USE_THREADS
3111 case want_vtbl_mutex:
3112 result = &PL_vtbl_mutex;
3113 break;
3114#endif
3115 case want_vtbl_defelem:
3116 result = &PL_vtbl_defelem;
3117 break;
3118 case want_vtbl_regexp:
3119 result = &PL_vtbl_regexp;
3120 break;
3121 case want_vtbl_regdata:
3122 result = &PL_vtbl_regdata;
3123 break;
3124 case want_vtbl_regdatum:
3125 result = &PL_vtbl_regdatum;
3126 break;
3c90161d 3127#ifdef USE_LOCALE_COLLATE
dc9e4912
GS
3128 case want_vtbl_collxfrm:
3129 result = &PL_vtbl_collxfrm;
3130 break;
3c90161d 3131#endif
dc9e4912
GS
3132 case want_vtbl_amagic:
3133 result = &PL_vtbl_amagic;
3134 break;
3135 case want_vtbl_amagicelem:
3136 result = &PL_vtbl_amagicelem;
3137 break;
3138 }
3139 return result;
3140}
3141