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a0d0e21e 1/* util.c
a687059c 2 *
bc89e66f 3 * Copyright (c) 1991-2001, 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"
864dbfa3 16#define PERL_IN_UTIL_C
8d063cd8 17#include "perl.h"
62b28dd9 18
64ca3a65 19#ifndef PERL_MICRO
e1dfb34b 20#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
a687059c 21#include <signal.h>
62b28dd9 22#endif
a687059c 23
36477c24
PP
24#ifndef SIG_ERR
25# define SIG_ERR ((Sighandler_t) -1)
26#endif
64ca3a65 27#endif
36477c24 28
a687059c
LW
29#ifdef I_VFORK
30# include <vfork.h>
31#endif
32
94b6baf5
AD
33/* Put this after #includes because fork and vfork prototypes may
34 conflict.
35*/
36#ifndef HAS_VFORK
37# define vfork fork
38#endif
39
ff68c719
PP
40#ifdef I_SYS_WAIT
41# include <sys/wait.h>
42#endif
43
097ee67d
JH
44#ifdef I_LOCALE
45# include <locale.h>
46#endif
47
8d063cd8 48#define FLUSH
8d063cd8 49
a0d0e21e 50#ifdef LEAKTEST
a0d0e21e 51
8c52afec
IZ
52long xcount[MAXXCOUNT];
53long lastxcount[MAXXCOUNT];
54long xycount[MAXXCOUNT][MAXYCOUNT];
55long lastxycount[MAXXCOUNT][MAXYCOUNT];
56
a0d0e21e 57#endif
a863c7d1 58
16cebae2
GS
59#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
60# define FD_CLOEXEC 1 /* NeXT needs this */
61#endif
62
f2517201 63/* paranoid version of system's malloc() */
8d063cd8 64
a687059c
LW
65/* NOTE: Do not call the next three routines directly. Use the macros
66 * in handy.h, so that we can easily redefine everything to do tracking of
67 * allocated hunks back to the original New to track down any memory leaks.
20cec16a 68 * XXX This advice seems to be widely ignored :-( --AD August 1996.
a687059c
LW
69 */
70
bd4080b3 71Malloc_t
4f63d024 72Perl_safesysmalloc(MEM_SIZE size)
8d063cd8 73{
54aff467 74 dTHX;
bd4080b3 75 Malloc_t ptr;
55497cff 76#ifdef HAS_64K_LIMIT
62b28dd9 77 if (size > 0xffff) {
bf49b057 78 PerlIO_printf(Perl_error_log,
16cebae2 79 "Allocation too large: %lx\n", size) FLUSH;
54aff467 80 my_exit(1);
62b28dd9 81 }
55497cff 82#endif /* HAS_64K_LIMIT */
34de22dd
LW
83#ifdef DEBUGGING
84 if ((long)size < 0)
4f63d024 85 Perl_croak_nocontext("panic: malloc");
34de22dd 86#endif
12ae5dfc 87 ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
da927450 88 PERL_ALLOC_CHECK(ptr);
97835f67 89 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
8d063cd8
LW
90 if (ptr != Nullch)
91 return ptr;
3280af22 92 else if (PL_nomemok)
7c0587c8 93 return Nullch;
8d063cd8 94 else {
bf49b057 95 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 96 my_exit(1);
4e35701f 97 return Nullch;
8d063cd8
LW
98 }
99 /*NOTREACHED*/
100}
101
f2517201 102/* paranoid version of system's realloc() */
8d063cd8 103
bd4080b3 104Malloc_t
4f63d024 105Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 106{
54aff467 107 dTHX;
bd4080b3 108 Malloc_t ptr;
9a34ef1d 109#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) && !defined(PERL_MICRO)
6ad3d225 110 Malloc_t PerlMem_realloc();
ecfc5424 111#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 112
a1d180c4 113#ifdef HAS_64K_LIMIT
5f05dabc 114 if (size > 0xffff) {
bf49b057 115 PerlIO_printf(Perl_error_log,
5f05dabc 116 "Reallocation too large: %lx\n", size) FLUSH;
54aff467 117 my_exit(1);
5f05dabc 118 }
55497cff 119#endif /* HAS_64K_LIMIT */
7614df0c 120 if (!size) {
f2517201 121 safesysfree(where);
7614df0c
JD
122 return NULL;
123 }
124
378cc40b 125 if (!where)
f2517201 126 return safesysmalloc(size);
34de22dd
LW
127#ifdef DEBUGGING
128 if ((long)size < 0)
4f63d024 129 Perl_croak_nocontext("panic: realloc");
34de22dd 130#endif
12ae5dfc 131 ptr = (Malloc_t)PerlMem_realloc(where,size);
da927450 132 PERL_ALLOC_CHECK(ptr);
a1d180c4 133
97835f67
JH
134 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++));
135 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
79072805 136
8d063cd8
LW
137 if (ptr != Nullch)
138 return ptr;
3280af22 139 else if (PL_nomemok)
7c0587c8 140 return Nullch;
8d063cd8 141 else {
bf49b057 142 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 143 my_exit(1);
4e35701f 144 return Nullch;
8d063cd8
LW
145 }
146 /*NOTREACHED*/
147}
148
f2517201 149/* safe version of system's free() */
8d063cd8 150
54310121 151Free_t
4f63d024 152Perl_safesysfree(Malloc_t where)
8d063cd8 153{
155aba94 154#ifdef PERL_IMPLICIT_SYS
54aff467 155 dTHX;
155aba94 156#endif
97835f67 157 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++));
378cc40b 158 if (where) {
de3bb511 159 /*SUPPRESS 701*/
6ad3d225 160 PerlMem_free(where);
378cc40b 161 }
8d063cd8
LW
162}
163
f2517201 164/* safe version of system's calloc() */
1050c9ca 165
bd4080b3 166Malloc_t
4f63d024 167Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 168{
54aff467 169 dTHX;
bd4080b3 170 Malloc_t ptr;
1050c9ca 171
55497cff 172#ifdef HAS_64K_LIMIT
5f05dabc 173 if (size * count > 0xffff) {
bf49b057 174 PerlIO_printf(Perl_error_log,
5f05dabc 175 "Allocation too large: %lx\n", size * count) FLUSH;
54aff467 176 my_exit(1);
5f05dabc 177 }
55497cff 178#endif /* HAS_64K_LIMIT */
1050c9ca
PP
179#ifdef DEBUGGING
180 if ((long)size < 0 || (long)count < 0)
4f63d024 181 Perl_croak_nocontext("panic: calloc");
1050c9ca 182#endif
0b7c1c42 183 size *= count;
12ae5dfc 184 ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
da927450 185 PERL_ALLOC_CHECK(ptr);
97835f67 186 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) calloc %ld x %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)count,(long)size));
1050c9ca
PP
187 if (ptr != Nullch) {
188 memset((void*)ptr, 0, size);
189 return ptr;
190 }
3280af22 191 else if (PL_nomemok)
1050c9ca
PP
192 return Nullch;
193 else {
bf49b057 194 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 195 my_exit(1);
4e35701f 196 return Nullch;
1050c9ca
PP
197 }
198 /*NOTREACHED*/
199}
200
a687059c
LW
201#ifdef LEAKTEST
202
8c52afec
IZ
203struct mem_test_strut {
204 union {
205 long type;
206 char c[2];
207 } u;
208 long size;
209};
210
211# define ALIGN sizeof(struct mem_test_strut)
212
213# define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
214# define typeof_chunk(ch) \
215 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
216# define set_typeof_chunk(ch,t) \
217 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
218#define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
219 ? MAXYCOUNT - 1 \
220 : ( (size) > 40 \
221 ? ((size) - 1)/8 + 5 \
222 : ((size) - 1)/4))
8d063cd8 223
bd4080b3 224Malloc_t
4f63d024 225Perl_safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 226{
8c52afec 227 register char* where = (char*)safemalloc(size + ALIGN);
8d063cd8 228
8c52afec
IZ
229 xcount[x] += size;
230 xycount[x][SIZE_TO_Y(size)]++;
231 set_typeof_chunk(where, x);
232 sizeof_chunk(where) = size;
233 return (Malloc_t)(where + ALIGN);
8d063cd8 234}
8d063cd8 235
bd4080b3 236Malloc_t
4f63d024 237Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
a687059c 238{
8c52afec
IZ
239 char *where = (char*)wh;
240
241 if (!wh)
242 return safexmalloc(0,size);
a1d180c4 243
8c52afec
IZ
244 {
245 MEM_SIZE old = sizeof_chunk(where - ALIGN);
246 int t = typeof_chunk(where - ALIGN);
247 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
a1d180c4 248
8c52afec
IZ
249 xycount[t][SIZE_TO_Y(old)]--;
250 xycount[t][SIZE_TO_Y(size)]++;
251 xcount[t] += size - old;
252 sizeof_chunk(new) = size;
253 return (Malloc_t)(new + ALIGN);
254 }
a687059c
LW
255}
256
257void
4f63d024 258Perl_safexfree(Malloc_t wh)
a687059c 259{
79072805 260 I32 x;
8c52afec
IZ
261 char *where = (char*)wh;
262 MEM_SIZE size;
a1d180c4 263
a687059c
LW
264 if (!where)
265 return;
266 where -= ALIGN;
8c52afec 267 size = sizeof_chunk(where);
a687059c 268 x = where[0] + 100 * where[1];
8c52afec
IZ
269 xcount[x] -= size;
270 xycount[x][SIZE_TO_Y(size)]--;
a687059c
LW
271 safefree(where);
272}
273
bd4080b3 274Malloc_t
4f63d024 275Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 276{
8c52afec
IZ
277 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
278 xcount[x] += size;
279 xycount[x][SIZE_TO_Y(size)]++;
280 memset((void*)(where + ALIGN), 0, size * count);
281 set_typeof_chunk(where, x);
282 sizeof_chunk(where) = size;
283 return (Malloc_t)(where + ALIGN);
1050c9ca
PP
284}
285
864dbfa3 286STATIC void
cea2e8a9 287S_xstat(pTHX_ int flag)
8d063cd8 288{
8c52afec
IZ
289 register I32 i, j, total = 0;
290 I32 subtot[MAXYCOUNT];
8d063cd8 291
8c52afec
IZ
292 for (j = 0; j < MAXYCOUNT; j++) {
293 subtot[j] = 0;
294 }
a1d180c4 295
bf49b057 296 PerlIO_printf(Perl_debug_log, " Id subtot 4 8 12 16 20 24 28 32 36 40 48 56 64 72 80 80+\n", total);
a687059c 297 for (i = 0; i < MAXXCOUNT; i++) {
8c52afec
IZ
298 total += xcount[i];
299 for (j = 0; j < MAXYCOUNT; j++) {
300 subtot[j] += xycount[i][j];
301 }
302 if (flag == 0
303 ? xcount[i] /* Have something */
a1d180c4 304 : (flag == 2
8c52afec
IZ
305 ? xcount[i] != lastxcount[i] /* Changed */
306 : xcount[i] > lastxcount[i])) { /* Growed */
a1d180c4 307 PerlIO_printf(Perl_debug_log,"%2d %02d %7ld ", i / 100, i % 100,
8c52afec 308 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
a687059c 309 lastxcount[i] = xcount[i];
8c52afec 310 for (j = 0; j < MAXYCOUNT; j++) {
a1d180c4 311 if ( flag == 0
8c52afec 312 ? xycount[i][j] /* Have something */
a1d180c4 313 : (flag == 2
8c52afec
IZ
314 ? xycount[i][j] != lastxycount[i][j] /* Changed */
315 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
a1d180c4
NIS
316 PerlIO_printf(Perl_debug_log,"%3ld ",
317 flag == 2
318 ? xycount[i][j] - lastxycount[i][j]
8c52afec
IZ
319 : xycount[i][j]);
320 lastxycount[i][j] = xycount[i][j];
321 } else {
bf49b057 322 PerlIO_printf(Perl_debug_log, " . ", xycount[i][j]);
8c52afec
IZ
323 }
324 }
bf49b057 325 PerlIO_printf(Perl_debug_log, "\n");
8c52afec
IZ
326 }
327 }
328 if (flag != 2) {
bf49b057 329 PerlIO_printf(Perl_debug_log, "Total %7ld ", total);
8c52afec
IZ
330 for (j = 0; j < MAXYCOUNT; j++) {
331 if (subtot[j]) {
bf49b057 332 PerlIO_printf(Perl_debug_log, "%3ld ", subtot[j]);
8c52afec 333 } else {
bf49b057 334 PerlIO_printf(Perl_debug_log, " . ");
8c52afec 335 }
8d063cd8 336 }
bf49b057 337 PerlIO_printf(Perl_debug_log, "\n");
8d063cd8 338 }
8d063cd8 339}
a687059c
LW
340
341#endif /* LEAKTEST */
8d063cd8
LW
342
343/* copy a string up to some (non-backslashed) delimiter, if any */
344
345char *
864dbfa3 346Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 347{
fc36a67e
PP
348 register I32 tolen;
349 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW
350 if (*from == '\\') {
351 if (from[1] == delim)
352 from++;
fc36a67e
PP
353 else {
354 if (to < toend)
355 *to++ = *from;
356 tolen++;
357 from++;
358 }
378cc40b 359 }
bedebaa5 360 else if (*from == delim)
8d063cd8 361 break;
fc36a67e
PP
362 if (to < toend)
363 *to++ = *from;
8d063cd8 364 }
bedebaa5
CS
365 if (to < toend)
366 *to = '\0';
fc36a67e 367 *retlen = tolen;
8d063cd8
LW
368 return from;
369}
370
371/* return ptr to little string in big string, NULL if not found */
378cc40b 372/* This routine was donated by Corey Satten. */
8d063cd8
LW
373
374char *
864dbfa3 375Perl_instr(pTHX_ register const char *big, register const char *little)
378cc40b 376{
08105a92 377 register const char *s, *x;
79072805 378 register I32 first;
378cc40b 379
a687059c 380 if (!little)
08105a92 381 return (char*)big;
a687059c 382 first = *little++;
378cc40b 383 if (!first)
08105a92 384 return (char*)big;
378cc40b
LW
385 while (*big) {
386 if (*big++ != first)
387 continue;
388 for (x=big,s=little; *s; /**/ ) {
389 if (!*x)
390 return Nullch;
391 if (*s++ != *x++) {
392 s--;
393 break;
394 }
395 }
396 if (!*s)
08105a92 397 return (char*)(big-1);
378cc40b
LW
398 }
399 return Nullch;
400}
8d063cd8 401
a687059c
LW
402/* same as instr but allow embedded nulls */
403
404char *
864dbfa3 405Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
8d063cd8 406{
08105a92 407 register const char *s, *x;
79072805 408 register I32 first = *little;
08105a92 409 register const char *littleend = lend;
378cc40b 410
a0d0e21e 411 if (!first && little >= littleend)
08105a92 412 return (char*)big;
de3bb511
LW
413 if (bigend - big < littleend - little)
414 return Nullch;
a687059c
LW
415 bigend -= littleend - little++;
416 while (big <= bigend) {
417 if (*big++ != first)
418 continue;
419 for (x=big,s=little; s < littleend; /**/ ) {
420 if (*s++ != *x++) {
421 s--;
422 break;
423 }
424 }
425 if (s >= littleend)
08105a92 426 return (char*)(big-1);
378cc40b 427 }
a687059c
LW
428 return Nullch;
429}
430
431/* reverse of the above--find last substring */
432
433char *
864dbfa3 434Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
a687059c 435{
08105a92
GS
436 register const char *bigbeg;
437 register const char *s, *x;
79072805 438 register I32 first = *little;
08105a92 439 register const char *littleend = lend;
a687059c 440
a0d0e21e 441 if (!first && little >= littleend)
08105a92 442 return (char*)bigend;
a687059c
LW
443 bigbeg = big;
444 big = bigend - (littleend - little++);
445 while (big >= bigbeg) {
446 if (*big-- != first)
447 continue;
448 for (x=big+2,s=little; s < littleend; /**/ ) {
449 if (*s++ != *x++) {
450 s--;
451 break;
452 }
453 }
454 if (s >= littleend)
08105a92 455 return (char*)(big+1);
378cc40b 456 }
a687059c 457 return Nullch;
378cc40b 458}
a687059c 459
bbce6d69
PP
460/*
461 * Set up for a new ctype locale.
462 */
55497cff 463void
ff4fed7c 464Perl_new_ctype(pTHX_ char *newctype)
ef7eada9 465{
36477c24
PP
466#ifdef USE_LOCALE_CTYPE
467
bbce6d69 468 int i;
ef7eada9 469
bbce6d69
PP
470 for (i = 0; i < 256; i++) {
471 if (isUPPER_LC(i))
22c35a8c 472 PL_fold_locale[i] = toLOWER_LC(i);
bbce6d69 473 else if (isLOWER_LC(i))
22c35a8c 474 PL_fold_locale[i] = toUPPER_LC(i);
bbce6d69 475 else
22c35a8c 476 PL_fold_locale[i] = i;
bbce6d69 477 }
bbce6d69 478
36477c24
PP
479#endif /* USE_LOCALE_CTYPE */
480}
bbce6d69
PP
481
482/*
ff4fed7c
VK
483 * Standardize the locale name from a string returned by 'setlocale'.
484 *
485 * The standard return value of setlocale() is either
486 * (1) "xx_YY" if the first argument of setlocale() is not LC_ALL
487 * (2) "xa_YY xb_YY ..." if the first argument of setlocale() is LC_ALL
488 * (the space-separated values represent the various sublocales,
489 * in some unspecificed order)
490 *
491 * In some platforms it has a form like "LC_SOMETHING=Lang_Country.866\n",
492 * which is harmful for further use of the string in setlocale().
493 *
494 */
495STATIC char *
496S_stdize_locale(pTHX_ char *locs)
497{
498 char *s;
499 bool okay = TRUE;
500
501 if ((s = strchr(locs, '='))) {
502 char *t;
503
504 okay = FALSE;
505 if ((t = strchr(s, '.'))) {
506 char *u;
507
508 if ((u = strchr(t, '\n'))) {
509
510 if (u[1] == 0) {
511 STRLEN len = u - s;
a528dad0 512 Move(s + 1, locs, len, char);
ff4fed7c
VK
513 locs[len] = 0;
514 okay = TRUE;
515 }
516 }
517 }
518 }
519
520 if (!okay)
521 Perl_croak(aTHX_ "Can't fix broken locale name \"%s\"", locs);
522
523 return locs;
524}
525
526/*
bbce6d69
PP
527 * Set up for a new collation locale.
528 */
529void
ff4fed7c 530Perl_new_collate(pTHX_ char *newcoll)
bbce6d69 531{
36477c24
PP
532#ifdef USE_LOCALE_COLLATE
533
bbce6d69 534 if (! newcoll) {
3280af22 535 if (PL_collation_name) {
9b3a60d0 536 ++PL_collation_ix;
3280af22
NIS
537 Safefree(PL_collation_name);
538 PL_collation_name = NULL;
bbce6d69 539 }
ff4fed7c
VK
540 PL_collation_standard = TRUE;
541 PL_collxfrm_base = 0;
542 PL_collxfrm_mult = 2;
bbce6d69
PP
543 return;
544 }
545
3280af22 546 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
9b3a60d0
JH
547 ++PL_collation_ix;
548 Safefree(PL_collation_name);
549 PL_collation_name = stdize_locale(savepv(newcoll));
3280af22 550 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 551
bbce6d69
PP
552 {
553 /* 2: at most so many chars ('a', 'b'). */
554 /* 50: surely no system expands a char more. */
555#define XFRMBUFSIZE (2 * 50)
556 char xbuf[XFRMBUFSIZE];
557 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
558 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
559 SSize_t mult = fb - fa;
560 if (mult < 1)
cea2e8a9 561 Perl_croak(aTHX_ "strxfrm() gets absurd");
3280af22
NIS
562 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
563 PL_collxfrm_mult = mult;
bbce6d69 564 }
bbce6d69 565 }
bbce6d69 566
36477c24
PP
567#endif /* USE_LOCALE_COLLATE */
568}
bbce6d69 569
097ee67d 570void
51371543 571Perl_set_numeric_radix(pTHX)
097ee67d
JH
572{
573#ifdef USE_LOCALE_NUMERIC
574# ifdef HAS_LOCALECONV
575 struct lconv* lc;
576
577 lc = localeconv();
eff180cd
JH
578 if (lc && lc->decimal_point) {
579 if (lc->decimal_point[0] == '.' && lc->decimal_point[1] == 0) {
a453c169
JH
580 SvREFCNT_dec(PL_numeric_radix_sv);
581 PL_numeric_radix_sv = Nullsv;
eff180cd
JH
582 }
583 else {
a453c169
JH
584 if (PL_numeric_radix_sv)
585 sv_setpv(PL_numeric_radix_sv, lc->decimal_point);
eff180cd 586 else
a453c169 587 PL_numeric_radix_sv = newSVpv(lc->decimal_point, 0);
eff180cd
JH
588 }
589 }
097ee67d 590 else
a453c169 591 PL_numeric_radix_sv = Nullsv;
097ee67d 592# endif /* HAS_LOCALECONV */
097ee67d
JH
593#endif /* USE_LOCALE_NUMERIC */
594}
595
bbce6d69
PP
596/*
597 * Set up for a new numeric locale.
598 */
599void
ff4fed7c 600Perl_new_numeric(pTHX_ char *newnum)
bbce6d69 601{
36477c24
PP
602#ifdef USE_LOCALE_NUMERIC
603
bbce6d69 604 if (! newnum) {
3280af22
NIS
605 if (PL_numeric_name) {
606 Safefree(PL_numeric_name);
607 PL_numeric_name = NULL;
bbce6d69 608 }
ff4fed7c
VK
609 PL_numeric_standard = TRUE;
610 PL_numeric_local = TRUE;
bbce6d69
PP
611 return;
612 }
613
3280af22 614 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
9b3a60d0
JH
615 Safefree(PL_numeric_name);
616 PL_numeric_name = stdize_locale(savepv(newnum));
3280af22
NIS
617 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
618 PL_numeric_local = TRUE;
51371543 619 set_numeric_radix();
bbce6d69 620 }
36477c24
PP
621
622#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
623}
624
625void
864dbfa3 626Perl_set_numeric_standard(pTHX)
bbce6d69 627{
5f05dabc
PP
628#ifdef USE_LOCALE_NUMERIC
629
3280af22 630 if (! PL_numeric_standard) {
bbce6d69 631 setlocale(LC_NUMERIC, "C");
3280af22
NIS
632 PL_numeric_standard = TRUE;
633 PL_numeric_local = FALSE;
ff4fed7c 634 set_numeric_radix();
bbce6d69 635 }
5f05dabc
PP
636
637#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
638}
639
640void
864dbfa3 641Perl_set_numeric_local(pTHX)
bbce6d69 642{
5f05dabc
PP
643#ifdef USE_LOCALE_NUMERIC
644
3280af22
NIS
645 if (! PL_numeric_local) {
646 setlocale(LC_NUMERIC, PL_numeric_name);
647 PL_numeric_standard = FALSE;
648 PL_numeric_local = TRUE;
51371543 649 set_numeric_radix();
bbce6d69 650 }
bbce6d69 651
36477c24 652#endif /* USE_LOCALE_NUMERIC */
5f05dabc 653}
36477c24 654
36477c24
PP
655/*
656 * Initialize locale awareness.
657 */
f0c5b223 658int
864dbfa3 659Perl_init_i18nl10n(pTHX_ int printwarn)
f0c5b223
TB
660{
661 int ok = 1;
662 /* returns
663 * 1 = set ok or not applicable,
664 * 0 = fallback to C locale,
665 * -1 = fallback to C locale failed
666 */
bbce6d69 667
b1281dbe 668#if defined(USE_LOCALE)
bbce6d69 669
36477c24 670#ifdef USE_LOCALE_CTYPE
bbce6d69 671 char *curctype = NULL;
36477c24
PP
672#endif /* USE_LOCALE_CTYPE */
673#ifdef USE_LOCALE_COLLATE
bbce6d69 674 char *curcoll = NULL;
36477c24
PP
675#endif /* USE_LOCALE_COLLATE */
676#ifdef USE_LOCALE_NUMERIC
bbce6d69 677 char *curnum = NULL;
36477c24 678#endif /* USE_LOCALE_NUMERIC */
3aeabbed
JH
679#ifdef __GLIBC__
680 char *language = PerlEnv_getenv("LANGUAGE");
681#endif
76e3520e
GS
682 char *lc_all = PerlEnv_getenv("LC_ALL");
683 char *lang = PerlEnv_getenv("LANG");
bbce6d69 684 bool setlocale_failure = FALSE;
f0c5b223 685
02b32252
CS
686#ifdef LOCALE_ENVIRON_REQUIRED
687
688 /*
689 * Ultrix setlocale(..., "") fails if there are no environment
690 * variables from which to get a locale name.
691 */
692
693 bool done = FALSE;
694
695#ifdef LC_ALL
696 if (lang) {
697 if (setlocale(LC_ALL, ""))
698 done = TRUE;
699 else
700 setlocale_failure = TRUE;
701 }
0644c9cb 702 if (!setlocale_failure) {
02b32252 703#ifdef USE_LOCALE_CTYPE
0644c9cb
IS
704 if (! (curctype =
705 setlocale(LC_CTYPE,
706 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
02b32252
CS
707 ? "" : Nullch)))
708 setlocale_failure = TRUE;
f4182098
AB
709 else
710 curctype = savepv(curctype);
02b32252
CS
711#endif /* USE_LOCALE_CTYPE */
712#ifdef USE_LOCALE_COLLATE
0644c9cb
IS
713 if (! (curcoll =
714 setlocale(LC_COLLATE,
715 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
02b32252
CS
716 ? "" : Nullch)))
717 setlocale_failure = TRUE;
f4182098
AB
718 else
719 curcoll = savepv(curcoll);
02b32252
CS
720#endif /* USE_LOCALE_COLLATE */
721#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS
722 if (! (curnum =
723 setlocale(LC_NUMERIC,
724 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
02b32252
CS
725 ? "" : Nullch)))
726 setlocale_failure = TRUE;
f4182098
AB
727 else
728 curnum = savepv(curnum);
02b32252
CS
729#endif /* USE_LOCALE_NUMERIC */
730 }
731
0644c9cb 732#endif /* LC_ALL */
02b32252 733
0644c9cb 734#endif /* !LOCALE_ENVIRON_REQUIRED */
5f05dabc 735
0644c9cb 736#ifdef LC_ALL
bbce6d69
PP
737 if (! setlocale(LC_ALL, ""))
738 setlocale_failure = TRUE;
0644c9cb 739#endif /* LC_ALL */
bbce6d69 740
0644c9cb 741 if (!setlocale_failure) {
36477c24 742#ifdef USE_LOCALE_CTYPE
0644c9cb
IS
743 if (! (curctype = setlocale(LC_CTYPE, "")))
744 setlocale_failure = TRUE;
f4182098
AB
745 else
746 curctype = savepv(curctype);
36477c24
PP
747#endif /* USE_LOCALE_CTYPE */
748#ifdef USE_LOCALE_COLLATE
0644c9cb
IS
749 if (! (curcoll = setlocale(LC_COLLATE, "")))
750 setlocale_failure = TRUE;
f4182098
AB
751 else
752 curcoll = savepv(curcoll);
36477c24
PP
753#endif /* USE_LOCALE_COLLATE */
754#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS
755 if (! (curnum = setlocale(LC_NUMERIC, "")))
756 setlocale_failure = TRUE;
f4182098
AB
757 else
758 curnum = savepv(curnum);
36477c24 759#endif /* USE_LOCALE_NUMERIC */
0644c9cb 760 }
02b32252 761
5f05dabc
PP
762 if (setlocale_failure) {
763 char *p;
a1d180c4 764 bool locwarn = (printwarn > 1 ||
155aba94
GS
765 (printwarn &&
766 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p))));
20cec16a 767
5f05dabc
PP
768 if (locwarn) {
769#ifdef LC_ALL
a1d180c4 770
bf49b057 771 PerlIO_printf(Perl_error_log,
5f05dabc
PP
772 "perl: warning: Setting locale failed.\n");
773
774#else /* !LC_ALL */
a1d180c4 775
bf49b057 776 PerlIO_printf(Perl_error_log,
bbce6d69 777 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 778#ifdef USE_LOCALE_CTYPE
bbce6d69 779 if (! curctype)
bf49b057 780 PerlIO_printf(Perl_error_log, "LC_CTYPE ");
36477c24
PP
781#endif /* USE_LOCALE_CTYPE */
782#ifdef USE_LOCALE_COLLATE
bbce6d69 783 if (! curcoll)
bf49b057 784 PerlIO_printf(Perl_error_log, "LC_COLLATE ");
36477c24
PP
785#endif /* USE_LOCALE_COLLATE */
786#ifdef USE_LOCALE_NUMERIC
bbce6d69 787 if (! curnum)
bf49b057 788 PerlIO_printf(Perl_error_log, "LC_NUMERIC ");
36477c24 789#endif /* USE_LOCALE_NUMERIC */
bf49b057 790 PerlIO_printf(Perl_error_log, "\n");
bbce6d69 791
5f05dabc
PP
792#endif /* LC_ALL */
793
bf49b057 794 PerlIO_printf(Perl_error_log,
bbce6d69 795 "perl: warning: Please check that your locale settings:\n");
ef7eada9 796
3aeabbed 797#ifdef __GLIBC__
bf49b057 798 PerlIO_printf(Perl_error_log,
3aeabbed
JH
799 "\tLANGUAGE = %c%s%c,\n",
800 language ? '"' : '(',
801 language ? language : "unset",
802 language ? '"' : ')');
803#endif
804
bf49b057 805 PerlIO_printf(Perl_error_log,
bbce6d69
PP
806 "\tLC_ALL = %c%s%c,\n",
807 lc_all ? '"' : '(',
808 lc_all ? lc_all : "unset",
809 lc_all ? '"' : ')');
5f05dabc 810
b1281dbe 811#if defined(USE_ENVIRON_ARRAY)
5f05dabc
PP
812 {
813 char **e;
814 for (e = environ; *e; e++) {
815 if (strnEQ(*e, "LC_", 3)
816 && strnNE(*e, "LC_ALL=", 7)
817 && (p = strchr(*e, '=')))
bf49b057 818 PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n",
fb73857a 819 (int)(p - *e), *e, p + 1);
5f05dabc
PP
820 }
821 }
b1281dbe
JH
822#else
823 PerlIO_printf(Perl_error_log,
824 "\t(possibly more locale environment variables)\n");
825#endif
5f05dabc 826
bf49b057 827 PerlIO_printf(Perl_error_log,
bbce6d69 828 "\tLANG = %c%s%c\n",
5f05dabc 829 lang ? '"' : '(',
bbce6d69
PP
830 lang ? lang : "unset",
831 lang ? '"' : ')');
ef7eada9 832
bf49b057 833 PerlIO_printf(Perl_error_log,
bbce6d69 834 " are supported and installed on your system.\n");
5f05dabc 835 }
ef7eada9 836
5f05dabc
PP
837#ifdef LC_ALL
838
839 if (setlocale(LC_ALL, "C")) {
840 if (locwarn)
bf49b057 841 PerlIO_printf(Perl_error_log,
5f05dabc 842 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 843 ok = 0;
ef7eada9 844 }
5f05dabc
PP
845 else {
846 if (locwarn)
bf49b057 847 PerlIO_printf(Perl_error_log,
5f05dabc
PP
848 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
849 ok = -1;
850 }
bbce6d69 851
5f05dabc
PP
852#else /* ! LC_ALL */
853
854 if (0
36477c24 855#ifdef USE_LOCALE_CTYPE
5f05dabc 856 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24
PP
857#endif /* USE_LOCALE_CTYPE */
858#ifdef USE_LOCALE_COLLATE
5f05dabc 859 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24
PP
860#endif /* USE_LOCALE_COLLATE */
861#ifdef USE_LOCALE_NUMERIC
5f05dabc 862 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 863#endif /* USE_LOCALE_NUMERIC */
5f05dabc
PP
864 )
865 {
866 if (locwarn)
bf49b057 867 PerlIO_printf(Perl_error_log,
5f05dabc
PP
868 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
869 ok = -1;
bbce6d69 870 }
5f05dabc 871
bbce6d69 872#endif /* ! LC_ALL */
5f05dabc
PP
873
874#ifdef USE_LOCALE_CTYPE
f4182098 875 curctype = savepv(setlocale(LC_CTYPE, Nullch));
5f05dabc
PP
876#endif /* USE_LOCALE_CTYPE */
877#ifdef USE_LOCALE_COLLATE
f4182098 878 curcoll = savepv(setlocale(LC_COLLATE, Nullch));
5f05dabc
PP
879#endif /* USE_LOCALE_COLLATE */
880#ifdef USE_LOCALE_NUMERIC
f4182098 881 curnum = savepv(setlocale(LC_NUMERIC, Nullch));
5f05dabc 882#endif /* USE_LOCALE_NUMERIC */
ef7eada9 883 }
f4182098 884 else {
ef7eada9 885
36477c24 886#ifdef USE_LOCALE_CTYPE
864dbfa3 887 new_ctype(curctype);
36477c24 888#endif /* USE_LOCALE_CTYPE */
bbce6d69 889
36477c24 890#ifdef USE_LOCALE_COLLATE
864dbfa3 891 new_collate(curcoll);
36477c24 892#endif /* USE_LOCALE_COLLATE */
bbce6d69 893
36477c24 894#ifdef USE_LOCALE_NUMERIC
864dbfa3 895 new_numeric(curnum);
36477c24 896#endif /* USE_LOCALE_NUMERIC */
f4182098 897 }
ef7eada9 898
b1281dbe 899#endif /* USE_LOCALE */
ef7eada9 900
f4182098
AB
901#ifdef USE_LOCALE_CTYPE
902 if (curctype != NULL)
903 Safefree(curctype);
904#endif /* USE_LOCALE_CTYPE */
905#ifdef USE_LOCALE_COLLATE
906 if (curcoll != NULL)
907 Safefree(curcoll);
908#endif /* USE_LOCALE_COLLATE */
909#ifdef USE_LOCALE_NUMERIC
910 if (curnum != NULL)
911 Safefree(curnum);
912#endif /* USE_LOCALE_NUMERIC */
f0c5b223
TB
913 return ok;
914}
915
bbce6d69
PP
916/* Backwards compatibility. */
917int
864dbfa3 918Perl_init_i18nl14n(pTHX_ int printwarn)
bbce6d69 919{
864dbfa3 920 return init_i18nl10n(printwarn);
bbce6d69 921}
ef7eada9 922
36477c24 923#ifdef USE_LOCALE_COLLATE
ef7eada9 924
bbce6d69
PP
925/*
926 * mem_collxfrm() is a bit like strxfrm() but with two important
927 * differences. First, it handles embedded NULs. Second, it allocates
928 * a bit more memory than needed for the transformed data itself.
929 * The real transformed data begins at offset sizeof(collationix).
930 * Please see sv_collxfrm() to see how this is used.
931 */
932char *
864dbfa3 933Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
bbce6d69
PP
934{
935 char *xbuf;
76e3520e 936 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69
PP
937
938 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
939 /* the +1 is for the terminating NUL. */
940
3280af22 941 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
76e3520e 942 New(171, xbuf, xAlloc, char);
bbce6d69
PP
943 if (! xbuf)
944 goto bad;
945
3280af22
NIS
946 *(U32*)xbuf = PL_collation_ix;
947 xout = sizeof(PL_collation_ix);
bbce6d69
PP
948 for (xin = 0; xin < len; ) {
949 SSize_t xused;
950
951 for (;;) {
76e3520e 952 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69
PP
953 if (xused == -1)
954 goto bad;
76e3520e 955 if (xused < xAlloc - xout)
bbce6d69 956 break;
76e3520e
GS
957 xAlloc = (2 * xAlloc) + 1;
958 Renew(xbuf, xAlloc, char);
bbce6d69
PP
959 if (! xbuf)
960 goto bad;
961 }
ef7eada9 962
bbce6d69
PP
963 xin += strlen(s + xin) + 1;
964 xout += xused;
965
966 /* Embedded NULs are understood but silently skipped
967 * because they make no sense in locale collation. */
968 }
ef7eada9 969
bbce6d69 970 xbuf[xout] = '\0';
3280af22 971 *xlen = xout - sizeof(PL_collation_ix);
bbce6d69
PP
972 return xbuf;
973
974 bad:
975 Safefree(xbuf);
976 *xlen = 0;
977 return NULL;
ef7eada9
JH
978}
979
36477c24 980#endif /* USE_LOCALE_COLLATE */
bbce6d69 981
cf93c79d
IZ
982#define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
983
984/* As a space optimization, we do not compile tables for strings of length
985 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
986 special-cased in fbm_instr().
987
988 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
989
954c1994
GS
990/*
991=for apidoc fbm_compile
992
993Analyses the string in order to make fast searches on it using fbm_instr()
994-- the Boyer-Moore algorithm.
995
996=cut
997*/
998
378cc40b 999void
7506f9c3 1000Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
378cc40b 1001{
942e002e
GS
1002 register U8 *s;
1003 register U8 *table;
79072805 1004 register U32 i;
0b71040e 1005 STRLEN len;
79072805
LW
1006 I32 rarest = 0;
1007 U32 frequency = 256;
1008
cf93c79d
IZ
1009 if (flags & FBMcf_TAIL)
1010 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
942e002e 1011 s = (U8*)SvPV_force(sv, len);
07f14f54 1012 (void)SvUPGRADE(sv, SVt_PVBM);
cf93c79d
IZ
1013 if (len == 0) /* TAIL might be on on a zero-length string. */
1014 return;
02128f11 1015 if (len > 2) {
7506f9c3 1016 U8 mlen;
cf93c79d
IZ
1017 unsigned char *sb;
1018
7506f9c3 1019 if (len > 255)
cf93c79d 1020 mlen = 255;
7506f9c3
GS
1021 else
1022 mlen = (U8)len;
1023 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
cf93c79d 1024 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
7506f9c3
GS
1025 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
1026 memset((void*)table, mlen, 256);
1027 table[-1] = (U8)flags;
02128f11 1028 i = 0;
7506f9c3 1029 sb = s - mlen + 1; /* first char (maybe) */
cf93c79d
IZ
1030 while (s >= sb) {
1031 if (table[*s] == mlen)
7506f9c3 1032 table[*s] = (U8)i;
cf93c79d
IZ
1033 s--, i++;
1034 }
378cc40b 1035 }
14befaf4 1036 sv_magic(sv, Nullsv, PERL_MAGIC_bm, Nullch, 0); /* deep magic */
79072805 1037 SvVALID_on(sv);
378cc40b 1038
463ee0b2 1039 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69 1040 for (i = 0; i < len; i++) {
22c35a8c 1041 if (PL_freq[s[i]] < frequency) {
bbce6d69 1042 rarest = i;
22c35a8c 1043 frequency = PL_freq[s[i]];
378cc40b
LW
1044 }
1045 }
79072805
LW
1046 BmRARE(sv) = s[rarest];
1047 BmPREVIOUS(sv) = rarest;
cf93c79d
IZ
1048 BmUSEFUL(sv) = 100; /* Initial value */
1049 if (flags & FBMcf_TAIL)
1050 SvTAIL_on(sv);
7506f9c3
GS
1051 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
1052 BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW
1053}
1054
cf93c79d
IZ
1055/* If SvTAIL(littlestr), it has a fake '\n' at end. */
1056/* If SvTAIL is actually due to \Z or \z, this gives false positives
1057 if multiline */
1058
954c1994
GS
1059/*
1060=for apidoc fbm_instr
1061
1062Returns the location of the SV in the string delimited by C<str> and
1063C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
1064does not have to be fbm_compiled, but the search will not be as fast
1065then.
1066
1067=cut
1068*/
1069
378cc40b 1070char *
864dbfa3 1071Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
378cc40b 1072{
a687059c 1073 register unsigned char *s;
cf93c79d
IZ
1074 STRLEN l;
1075 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
1076 register STRLEN littlelen = l;
1077 register I32 multiline = flags & FBMrf_MULTILINE;
1078
1079 if (bigend - big < littlelen) {
a1d180c4 1080 if ( SvTAIL(littlestr)
cf93c79d 1081 && (bigend - big == littlelen - 1)
a1d180c4 1082 && (littlelen == 1
12ae5dfc
JH
1083 || (*big == *little &&
1084 memEQ((char *)big, (char *)little, littlelen - 1))))
cf93c79d
IZ
1085 return (char*)big;
1086 return Nullch;
1087 }
378cc40b 1088
cf93c79d 1089 if (littlelen <= 2) { /* Special-cased */
cf93c79d
IZ
1090
1091 if (littlelen == 1) {
1092 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
1093 /* Know that bigend != big. */
1094 if (bigend[-1] == '\n')
1095 return (char *)(bigend - 1);
1096 return (char *) bigend;
1097 }
1098 s = big;
1099 while (s < bigend) {
1100 if (*s == *little)
1101 return (char *)s;
1102 s++;
1103 }
1104 if (SvTAIL(littlestr))
1105 return (char *) bigend;
1106 return Nullch;
1107 }
1108 if (!littlelen)
1109 return (char*)big; /* Cannot be SvTAIL! */
1110
1111 /* littlelen is 2 */
1112 if (SvTAIL(littlestr) && !multiline) {
1113 if (bigend[-1] == '\n' && bigend[-2] == *little)
1114 return (char*)bigend - 2;
1115 if (bigend[-1] == *little)
1116 return (char*)bigend - 1;
1117 return Nullch;
1118 }
1119 {
1120 /* This should be better than FBM if c1 == c2, and almost
1121 as good otherwise: maybe better since we do less indirection.
1122 And we save a lot of memory by caching no table. */
1123 register unsigned char c1 = little[0];
1124 register unsigned char c2 = little[1];
1125
1126 s = big + 1;
1127 bigend--;
1128 if (c1 != c2) {
1129 while (s <= bigend) {
1130 if (s[0] == c2) {
1131 if (s[-1] == c1)
1132 return (char*)s - 1;
1133 s += 2;
1134 continue;
3fe6f2dc 1135 }
cf93c79d
IZ
1136 next_chars:
1137 if (s[0] == c1) {
1138 if (s == bigend)
1139 goto check_1char_anchor;
1140 if (s[1] == c2)
1141 return (char*)s;
1142 else {
1143 s++;
1144 goto next_chars;
1145 }
1146 }
1147 else
1148 s += 2;
1149 }
1150 goto check_1char_anchor;
1151 }
1152 /* Now c1 == c2 */
1153 while (s <= bigend) {
1154 if (s[0] == c1) {
1155 if (s[-1] == c1)
1156 return (char*)s - 1;
1157 if (s == bigend)
1158 goto check_1char_anchor;
1159 if (s[1] == c1)
1160 return (char*)s;
1161 s += 3;
02128f11 1162 }
c277df42 1163 else
cf93c79d 1164 s += 2;
c277df42 1165 }
c277df42 1166 }
cf93c79d
IZ
1167 check_1char_anchor: /* One char and anchor! */
1168 if (SvTAIL(littlestr) && (*bigend == *little))
1169 return (char *)bigend; /* bigend is already decremented. */
1170 return Nullch;
d48672a2 1171 }
cf93c79d 1172 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
bbce6d69 1173 s = bigend - littlelen;
a1d180c4 1174 if (s >= big && bigend[-1] == '\n' && *s == *little
cf93c79d
IZ
1175 /* Automatically of length > 2 */
1176 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
7506f9c3 1177 {
bbce6d69 1178 return (char*)s; /* how sweet it is */
7506f9c3
GS
1179 }
1180 if (s[1] == *little
1181 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1182 {
cf93c79d 1183 return (char*)s + 1; /* how sweet it is */
7506f9c3 1184 }
02128f11
IZ
1185 return Nullch;
1186 }
cf93c79d
IZ
1187 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1188 char *b = ninstr((char*)big,(char*)bigend,
1189 (char*)little, (char*)little + littlelen);
1190
1191 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1192 /* Chop \n from littlestr: */
1193 s = bigend - littlelen + 1;
7506f9c3
GS
1194 if (*s == *little
1195 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1196 {
3fe6f2dc 1197 return (char*)s;
7506f9c3 1198 }
cf93c79d 1199 return Nullch;
a687059c 1200 }
cf93c79d 1201 return b;
a687059c 1202 }
a1d180c4 1203
cf93c79d
IZ
1204 { /* Do actual FBM. */
1205 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1206 register unsigned char *oldlittle;
1207
1208 if (littlelen > bigend - big)
1209 return Nullch;
1210 --littlelen; /* Last char found by table lookup */
1211
1212 s = big + littlelen;
1213 little += littlelen; /* last char */
1214 oldlittle = little;
1215 if (s < bigend) {
1216 register I32 tmp;
1217
1218 top2:
1219 /*SUPPRESS 560*/
7506f9c3 1220 if ((tmp = table[*s])) {
62b28dd9 1221#ifdef POINTERRIGOR
cf93c79d
IZ
1222 if (bigend - s > tmp) {
1223 s += tmp;
1224 goto top2;
1225 }
bbce6d69 1226 s += tmp;
62b28dd9 1227#else
cf93c79d 1228 if ((s += tmp) < bigend)
62b28dd9 1229 goto top2;
cf93c79d
IZ
1230#endif
1231 goto check_end;
1232 }
1233 else { /* less expensive than calling strncmp() */
1234 register unsigned char *olds = s;
1235
1236 tmp = littlelen;
1237
1238 while (tmp--) {
1239 if (*--s == *--little)
1240 continue;
cf93c79d
IZ
1241 s = olds + 1; /* here we pay the price for failure */
1242 little = oldlittle;
1243 if (s < bigend) /* fake up continue to outer loop */
1244 goto top2;
1245 goto check_end;
1246 }
1247 return (char *)s;
a687059c 1248 }
378cc40b 1249 }
cf93c79d
IZ
1250 check_end:
1251 if ( s == bigend && (table[-1] & FBMcf_TAIL)
12ae5dfc
JH
1252 && memEQ((char *)(bigend - littlelen),
1253 (char *)(oldlittle - littlelen), littlelen) )
cf93c79d
IZ
1254 return (char*)bigend - littlelen;
1255 return Nullch;
378cc40b 1256 }
378cc40b
LW
1257}
1258
c277df42
IZ
1259/* start_shift, end_shift are positive quantities which give offsets
1260 of ends of some substring of bigstr.
1261 If `last' we want the last occurence.
1262 old_posp is the way of communication between consequent calls if
a1d180c4 1263 the next call needs to find the .
c277df42 1264 The initial *old_posp should be -1.
cf93c79d
IZ
1265
1266 Note that we take into account SvTAIL, so one can get extra
1267 optimizations if _ALL flag is set.
c277df42
IZ
1268 */
1269
cf93c79d
IZ
1270/* If SvTAIL is actually due to \Z or \z, this gives false positives
1271 if PL_multiline. In fact if !PL_multiline the autoritative answer
1272 is not supported yet. */
1273
378cc40b 1274char *
864dbfa3 1275Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1276{
a687059c
LW
1277 register unsigned char *s, *x;
1278 register unsigned char *big;
79072805
LW
1279 register I32 pos;
1280 register I32 previous;
1281 register I32 first;
a687059c 1282 register unsigned char *little;
c277df42 1283 register I32 stop_pos;
a687059c 1284 register unsigned char *littleend;
c277df42 1285 I32 found = 0;
378cc40b 1286
c277df42 1287 if (*old_posp == -1
3280af22 1288 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
cf93c79d
IZ
1289 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1290 cant_find:
a1d180c4 1291 if ( BmRARE(littlestr) == '\n'
cf93c79d
IZ
1292 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1293 little = (unsigned char *)(SvPVX(littlestr));
1294 littleend = little + SvCUR(littlestr);
1295 first = *little++;
1296 goto check_tail;
1297 }
378cc40b 1298 return Nullch;
cf93c79d
IZ
1299 }
1300
463ee0b2 1301 little = (unsigned char *)(SvPVX(littlestr));
79072805 1302 littleend = little + SvCUR(littlestr);
378cc40b 1303 first = *little++;
c277df42 1304 /* The value of pos we can start at: */
79072805 1305 previous = BmPREVIOUS(littlestr);
463ee0b2 1306 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ
1307 /* The value of pos we can stop at: */
1308 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
cf93c79d
IZ
1309 if (previous + start_shift > stop_pos) {
1310 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1311 goto check_tail;
1312 return Nullch;
1313 }
c277df42 1314 while (pos < previous + start_shift) {
3280af22 1315 if (!(pos += PL_screamnext[pos]))
cf93c79d 1316 goto cant_find;
378cc40b 1317 }
de3bb511 1318#ifdef POINTERRIGOR
bbce6d69 1319 do {
ef64f398 1320 if (pos >= stop_pos) break;
bbce6d69
PP
1321 if (big[pos-previous] != first)
1322 continue;
1323 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1324 if (*s++ != *x++) {
1325 s--;
1326 break;
de3bb511 1327 }
bbce6d69 1328 }
c277df42
IZ
1329 if (s == littleend) {
1330 *old_posp = pos;
1331 if (!last) return (char *)(big+pos-previous);
1332 found = 1;
1333 }
6b88bc9c 1334 } while ( pos += PL_screamnext[pos] );
c277df42 1335 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW
1336#else /* !POINTERRIGOR */
1337 big -= previous;
bbce6d69 1338 do {
ef64f398 1339 if (pos >= stop_pos) break;
bbce6d69
PP
1340 if (big[pos] != first)
1341 continue;
1342 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1343 if (*s++ != *x++) {
1344 s--;
1345 break;
378cc40b 1346 }
bbce6d69 1347 }
c277df42
IZ
1348 if (s == littleend) {
1349 *old_posp = pos;
1350 if (!last) return (char *)(big+pos);
1351 found = 1;
1352 }
3280af22 1353 } while ( pos += PL_screamnext[pos] );
a1d180c4 1354 if (last && found)
cf93c79d 1355 return (char *)(big+(*old_posp));
de3bb511 1356#endif /* POINTERRIGOR */
cf93c79d
IZ
1357 check_tail:
1358 if (!SvTAIL(littlestr) || (end_shift > 0))
1359 return Nullch;
1360 /* Ignore the trailing "\n". This code is not microoptimized */
1361 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1362 stop_pos = littleend - little; /* Actual littlestr len */
1363 if (stop_pos == 0)
1364 return (char*)big;
1365 big -= stop_pos;
1366 if (*big == first
12ae5dfc
JH
1367 && ((stop_pos == 1) ||
1368 memEQ((char *)(big + 1), (char *)little, stop_pos - 1)))
cf93c79d
IZ
1369 return (char*)big;
1370 return Nullch;
8d063cd8
LW
1371}
1372
79072805 1373I32
864dbfa3 1374Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
79072805 1375{
bbce6d69
PP
1376 register U8 *a = (U8 *)s1;
1377 register U8 *b = (U8 *)s2;
79072805 1378 while (len--) {
22c35a8c 1379 if (*a != *b && *a != PL_fold[*b])
bbce6d69
PP
1380 return 1;
1381 a++,b++;
1382 }
1383 return 0;
1384}
1385
1386I32
864dbfa3 1387Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
bbce6d69
PP
1388{
1389 register U8 *a = (U8 *)s1;
1390 register U8 *b = (U8 *)s2;
1391 while (len--) {
22c35a8c 1392 if (*a != *b && *a != PL_fold_locale[*b])
bbce6d69
PP
1393 return 1;
1394 a++,b++;
79072805
LW
1395 }
1396 return 0;
1397}
1398
8d063cd8
LW
1399/* copy a string to a safe spot */
1400
954c1994
GS
1401/*
1402=for apidoc savepv
1403
1404Copy a string to a safe spot. This does not use an SV.
1405
1406=cut
1407*/
1408
8d063cd8 1409char *
864dbfa3 1410Perl_savepv(pTHX_ const char *sv)
8d063cd8 1411{
a687059c 1412 register char *newaddr;
8d063cd8 1413
79072805
LW
1414 New(902,newaddr,strlen(sv)+1,char);
1415 (void)strcpy(newaddr,sv);
8d063cd8
LW
1416 return newaddr;
1417}
1418
a687059c
LW
1419/* same thing but with a known length */
1420
954c1994
GS
1421/*
1422=for apidoc savepvn
1423
1424Copy a string to a safe spot. The C<len> indicates number of bytes to
1425copy. This does not use an SV.
1426
1427=cut
1428*/
1429
a687059c 1430char *
864dbfa3 1431Perl_savepvn(pTHX_ const char *sv, register I32 len)
a687059c
LW
1432{
1433 register char *newaddr;
1434
1435 New(903,newaddr,len+1,char);
79072805 1436 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW
1437 newaddr[len] = '\0'; /* is now */
1438 return newaddr;
1439}
1440
cea2e8a9 1441/* the SV for Perl_form() and mess() is not kept in an arena */
fc36a67e 1442
76e3520e 1443STATIC SV *
cea2e8a9 1444S_mess_alloc(pTHX)
fc36a67e
PP
1445{
1446 SV *sv;
1447 XPVMG *any;
1448
e72dc28c
GS
1449 if (!PL_dirty)
1450 return sv_2mortal(newSVpvn("",0));
1451
0372dbb6
GS
1452 if (PL_mess_sv)
1453 return PL_mess_sv;
1454
fc36a67e
PP
1455 /* Create as PVMG now, to avoid any upgrading later */
1456 New(905, sv, 1, SV);
1457 Newz(905, any, 1, XPVMG);
1458 SvFLAGS(sv) = SVt_PVMG;
1459 SvANY(sv) = (void*)any;
1460 SvREFCNT(sv) = 1 << 30; /* practically infinite */
e72dc28c 1461 PL_mess_sv = sv;
fc36a67e
PP
1462 return sv;
1463}
1464
c5be433b 1465#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS
1466char *
1467Perl_form_nocontext(const char* pat, ...)
1468{
1469 dTHX;
c5be433b 1470 char *retval;
cea2e8a9
GS
1471 va_list args;
1472 va_start(args, pat);
c5be433b 1473 retval = vform(pat, &args);
cea2e8a9 1474 va_end(args);
c5be433b 1475 return retval;
cea2e8a9 1476}
c5be433b 1477#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9 1478
8990e307 1479char *
864dbfa3 1480Perl_form(pTHX_ const char* pat, ...)
8990e307 1481{
c5be433b 1482 char *retval;
46fc3d4c 1483 va_list args;
46fc3d4c 1484 va_start(args, pat);
c5be433b 1485 retval = vform(pat, &args);
46fc3d4c 1486 va_end(args);
c5be433b
GS
1487 return retval;
1488}
1489
1490char *
1491Perl_vform(pTHX_ const char *pat, va_list *args)
1492{
1493 SV *sv = mess_alloc();
1494 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
e72dc28c 1495 return SvPVX(sv);
46fc3d4c 1496}
a687059c 1497
5a844595
GS
1498#if defined(PERL_IMPLICIT_CONTEXT)
1499SV *
1500Perl_mess_nocontext(const char *pat, ...)
1501{
1502 dTHX;
1503 SV *retval;
1504 va_list args;
1505 va_start(args, pat);
1506 retval = vmess(pat, &args);
1507 va_end(args);
1508 return retval;
1509}
1510#endif /* PERL_IMPLICIT_CONTEXT */
1511
06bf62c7 1512SV *
5a844595
GS
1513Perl_mess(pTHX_ const char *pat, ...)
1514{
1515 SV *retval;
1516 va_list args;
1517 va_start(args, pat);
1518 retval = vmess(pat, &args);
1519 va_end(args);
1520 return retval;
1521}
1522
1523SV *
1524Perl_vmess(pTHX_ const char *pat, va_list *args)
46fc3d4c 1525{
e72dc28c 1526 SV *sv = mess_alloc();
46fc3d4c
PP
1527 static char dgd[] = " during global destruction.\n";
1528
fc36a67e 1529 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1530 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
57843af0 1531 if (CopLINE(PL_curcop))
ed094faf
GS
1532 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1533 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
515f54a1
GS
1534 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1535 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1536 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
57def98f 1537 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
cf2093f6 1538 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
a1d180c4 1539 line_mode ? "line" : "chunk",
cf2093f6 1540 (IV)IoLINES(GvIOp(PL_last_in_gv)));
a687059c 1541 }
9efbc0eb 1542#ifdef USE_THREADS
e8e6f333
GS
1543 if (thr->tid)
1544 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
9efbc0eb 1545#endif
515f54a1 1546 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1547 }
06bf62c7 1548 return sv;
a687059c
LW
1549}
1550
c5be433b
GS
1551OP *
1552Perl_vdie(pTHX_ const char* pat, va_list *args)
36477c24 1553{
36477c24 1554 char *message;
3280af22 1555 int was_in_eval = PL_in_eval;
36477c24
PP
1556 HV *stash;
1557 GV *gv;
1558 CV *cv;
06bf62c7
GS
1559 SV *msv;
1560 STRLEN msglen;
36477c24 1561
bf49b057 1562 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1563 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1564 thr, PL_curstack, PL_mainstack));
36477c24 1565
06bf62c7 1566 if (pat) {
5a844595
GS
1567 msv = vmess(pat, args);
1568 if (PL_errors && SvCUR(PL_errors)) {
1569 sv_catsv(PL_errors, msv);
1570 message = SvPV(PL_errors, msglen);
1571 SvCUR_set(PL_errors, 0);
1572 }
1573 else
1574 message = SvPV(msv,msglen);
06bf62c7
GS
1575 }
1576 else {
1577 message = Nullch;
0f79a09d 1578 msglen = 0;
06bf62c7 1579 }
36477c24 1580
bf49b057 1581 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1582 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1583 thr, message, PL_diehook));
3280af22 1584 if (PL_diehook) {
cea2e8a9 1585 /* sv_2cv might call Perl_croak() */
3280af22 1586 SV *olddiehook = PL_diehook;
1738f5c4 1587 ENTER;
3280af22
NIS
1588 SAVESPTR(PL_diehook);
1589 PL_diehook = Nullsv;
1738f5c4
CS
1590 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1591 LEAVE;
1592 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1593 dSP;
774d564b
PP
1594 SV *msg;
1595
1596 ENTER;
3a1f2dc9 1597 save_re_context();
79cb57f6 1598 if (message) {
06bf62c7 1599 msg = newSVpvn(message, msglen);
4e6ea2c3
GS
1600 SvREADONLY_on(msg);
1601 SAVEFREESV(msg);
1602 }
1603 else {
1604 msg = ERRSV;
1605 }
1738f5c4 1606
e788e7d3 1607 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1608 PUSHMARK(SP);
1738f5c4
CS
1609 XPUSHs(msg);
1610 PUTBACK;
0cdb2077 1611 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1612 POPSTACK;
774d564b 1613 LEAVE;
1738f5c4 1614 }
36477c24
PP
1615 }
1616
06bf62c7 1617 PL_restartop = die_where(message, msglen);
bf49b057 1618 DEBUG_S(PerlIO_printf(Perl_debug_log,
7c06b590 1619 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1620 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1621 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1622 JMPENV_JUMP(3);
3280af22 1623 return PL_restartop;
36477c24
PP
1624}
1625
c5be433b 1626#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS
1627OP *
1628Perl_die_nocontext(const char* pat, ...)
a687059c 1629{
cea2e8a9
GS
1630 dTHX;
1631 OP *o;
a687059c 1632 va_list args;
cea2e8a9 1633 va_start(args, pat);
c5be433b 1634 o = vdie(pat, &args);
cea2e8a9
GS
1635 va_end(args);
1636 return o;
1637}
c5be433b 1638#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9
GS
1639
1640OP *
1641Perl_die(pTHX_ const char* pat, ...)
1642{
1643 OP *o;
1644 va_list args;
1645 va_start(args, pat);
c5be433b 1646 o = vdie(pat, &args);
cea2e8a9
GS
1647 va_end(args);
1648 return o;
1649}
1650
c5be433b
GS
1651void
1652Perl_vcroak(pTHX_ const char* pat, va_list *args)
cea2e8a9 1653{
de3bb511 1654 char *message;
748a9306
LW
1655 HV *stash;
1656 GV *gv;
1657 CV *cv;
06bf62c7
GS
1658 SV *msv;
1659 STRLEN msglen;
a687059c 1660
9983fa3c
GS
1661 if (pat) {
1662 msv = vmess(pat, args);
1663 if (PL_errors && SvCUR(PL_errors)) {
1664 sv_catsv(PL_errors, msv);
1665 message = SvPV(PL_errors, msglen);
1666 SvCUR_set(PL_errors, 0);
1667 }
1668 else
1669 message = SvPV(msv,msglen);
1670 }
1671 else {
1672 message = Nullch;
1673 msglen = 0;
5a844595 1674 }
5a844595 1675
b900a521
JH
1676 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1677 PTR2UV(thr), message));
5a844595 1678
3280af22 1679 if (PL_diehook) {
cea2e8a9 1680 /* sv_2cv might call Perl_croak() */
3280af22 1681 SV *olddiehook = PL_diehook;
1738f5c4 1682 ENTER;
3280af22
NIS
1683 SAVESPTR(PL_diehook);
1684 PL_diehook = Nullsv;
20cec16a 1685 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS
1686 LEAVE;
1687 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1688 dSP;
774d564b
PP
1689 SV *msg;
1690
1691 ENTER;
3a1f2dc9 1692 save_re_context();
9983fa3c
GS
1693 if (message) {
1694 msg = newSVpvn(message, msglen);
1695 SvREADONLY_on(msg);
1696 SAVEFREESV(msg);
1697 }
1698 else {
1699 msg = ERRSV;
1700 }
20cec16a 1701
e788e7d3 1702 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1703 PUSHMARK(SP);
1738f5c4 1704 XPUSHs(msg);
20cec16a 1705 PUTBACK;
864dbfa3 1706 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1707 POPSTACK;
774d564b 1708 LEAVE;
20cec16a 1709 }
748a9306 1710 }
3280af22 1711 if (PL_in_eval) {
06bf62c7 1712 PL_restartop = die_where(message, msglen);
6224f72b 1713 JMPENV_JUMP(3);
a0d0e21e 1714 }
d175a3f0
GS
1715 {
1716#ifdef USE_SFIO
1717 /* SFIO can really mess with your errno */
1718 int e = errno;
1719#endif
bf49b057
GS
1720 PerlIO *serr = Perl_error_log;
1721
1722 PerlIO_write(serr, message, msglen);
1723 (void)PerlIO_flush(serr);
d175a3f0
GS
1724#ifdef USE_SFIO
1725 errno = e;
1726#endif
1727 }
f86702cc 1728 my_failure_exit();
a687059c
LW
1729}
1730
c5be433b 1731#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1732void
cea2e8a9 1733Perl_croak_nocontext(const char *pat, ...)
a687059c 1734{
cea2e8a9 1735 dTHX;
a687059c 1736 va_list args;
cea2e8a9 1737 va_start(args, pat);
c5be433b 1738 vcroak(pat, &args);
cea2e8a9
GS
1739 /* NOTREACHED */
1740 va_end(args);
1741}
1742#endif /* PERL_IMPLICIT_CONTEXT */
1743
954c1994
GS
1744/*
1745=for apidoc croak
1746
9983fa3c
GS
1747This is the XSUB-writer's interface to Perl's C<die> function.
1748Normally use this function the same way you use the C C<printf>
1749function. See C<warn>.
1750
1751If you want to throw an exception object, assign the object to
1752C<$@> and then pass C<Nullch> to croak():
1753
1754 errsv = get_sv("@", TRUE);
1755 sv_setsv(errsv, exception_object);
1756 croak(Nullch);
954c1994
GS
1757
1758=cut
1759*/
1760
cea2e8a9
GS
1761void
1762Perl_croak(pTHX_ const char *pat, ...)
1763{
1764 va_list args;
1765 va_start(args, pat);
c5be433b 1766 vcroak(pat, &args);
cea2e8a9
GS
1767 /* NOTREACHED */
1768 va_end(args);
1769}
1770
c5be433b
GS
1771void
1772Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1773{
de3bb511 1774 char *message;
748a9306
LW
1775 HV *stash;
1776 GV *gv;
1777 CV *cv;
06bf62c7
GS
1778 SV *msv;
1779 STRLEN msglen;
a687059c 1780
5a844595 1781 msv = vmess(pat, args);
06bf62c7 1782 message = SvPV(msv, msglen);
a687059c 1783
3280af22 1784 if (PL_warnhook) {
cea2e8a9 1785 /* sv_2cv might call Perl_warn() */
3280af22 1786 SV *oldwarnhook = PL_warnhook;
1738f5c4 1787 ENTER;
3280af22
NIS
1788 SAVESPTR(PL_warnhook);
1789 PL_warnhook = Nullsv;
20cec16a 1790 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS
1791 LEAVE;
1792 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1793 dSP;
774d564b
PP
1794 SV *msg;
1795
1796 ENTER;
3a1f2dc9 1797 save_re_context();
06bf62c7 1798 msg = newSVpvn(message, msglen);
774d564b
PP
1799 SvREADONLY_on(msg);
1800 SAVEFREESV(msg);
1801
e788e7d3 1802 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1803 PUSHMARK(SP);
774d564b 1804 XPUSHs(msg);
20cec16a 1805 PUTBACK;
864dbfa3 1806 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1807 POPSTACK;
774d564b 1808 LEAVE;
20cec16a
PP
1809 return;
1810 }
748a9306 1811 }
bf49b057
GS
1812 {
1813 PerlIO *serr = Perl_error_log;
1814
1815 PerlIO_write(serr, message, msglen);
a687059c 1816#ifdef LEAKTEST
a1d180c4 1817 DEBUG_L(*message == '!'
bf49b057
GS
1818 ? (xstat(message[1]=='!'
1819 ? (message[2]=='!' ? 2 : 1)
1820 : 0)
1821 , 0)
1822 : 0);
a687059c 1823#endif
bf49b057
GS
1824 (void)PerlIO_flush(serr);
1825 }
a687059c 1826}
8d063cd8 1827
c5be433b 1828#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS
1829void
1830Perl_warn_nocontext(const char *pat, ...)
1831{
1832 dTHX;
1833 va_list args;
1834 va_start(args, pat);
c5be433b 1835 vwarn(pat, &args);
cea2e8a9
GS
1836 va_end(args);
1837}
1838#endif /* PERL_IMPLICIT_CONTEXT */
1839
954c1994
GS
1840/*
1841=for apidoc warn
1842
1843This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1844function the same way you use the C C<printf> function. See
1845C<croak>.
1846
1847=cut
1848*/
1849
cea2e8a9
GS
1850void
1851Perl_warn(pTHX_ const char *pat, ...)
1852{
1853 va_list args;
1854 va_start(args, pat);
c5be433b 1855 vwarn(pat, &args);
cea2e8a9
GS
1856 va_end(args);
1857}
1858
c5be433b
GS
1859#if defined(PERL_IMPLICIT_CONTEXT)
1860void
1861Perl_warner_nocontext(U32 err, const char *pat, ...)
1862{
1863 dTHX;
1864 va_list args;
1865 va_start(args, pat);
1866 vwarner(err, pat, &args);
1867 va_end(args);
1868}
1869#endif /* PERL_IMPLICIT_CONTEXT */
1870
599cee73 1871void
864dbfa3 1872Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM
1873{
1874 va_list args;
c5be433b
GS
1875 va_start(args, pat);
1876 vwarner(err, pat, &args);
1877 va_end(args);
1878}
1879
1880void
1881Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1882{
599cee73
PM
1883 char *message;
1884 HV *stash;
1885 GV *gv;
1886 CV *cv;
06bf62c7
GS
1887 SV *msv;
1888 STRLEN msglen;
599cee73 1889
5a844595 1890 msv = vmess(pat, args);
06bf62c7 1891 message = SvPV(msv, msglen);
599cee73
PM
1892
1893 if (ckDEAD(err)) {
1894#ifdef USE_THREADS
b900a521 1895 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
599cee73
PM
1896#endif /* USE_THREADS */
1897 if (PL_diehook) {
cea2e8a9 1898 /* sv_2cv might call Perl_croak() */
599cee73
PM
1899 SV *olddiehook = PL_diehook;
1900 ENTER;
1901 SAVESPTR(PL_diehook);
1902 PL_diehook = Nullsv;
1903 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1904 LEAVE;
1905 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1906 dSP;
1907 SV *msg;
a1d180c4 1908
599cee73 1909 ENTER;
3a1f2dc9 1910 save_re_context();
06bf62c7 1911 msg = newSVpvn(message, msglen);
599cee73
PM
1912 SvREADONLY_on(msg);
1913 SAVEFREESV(msg);
a1d180c4 1914
3a1f2dc9 1915 PUSHSTACKi(PERLSI_DIEHOOK);
599cee73
PM
1916 PUSHMARK(sp);
1917 XPUSHs(msg);
1918 PUTBACK;
864dbfa3 1919 call_sv((SV*)cv, G_DISCARD);
3a1f2dc9 1920 POPSTACK;
599cee73
PM
1921 LEAVE;
1922 }
1923 }
1924 if (PL_in_eval) {
06bf62c7 1925 PL_restartop = die_where(message, msglen);
599cee73
PM
1926 JMPENV_JUMP(3);
1927 }
bf49b057
GS
1928 {
1929 PerlIO *serr = Perl_error_log;
1930 PerlIO_write(serr, message, msglen);
1931 (void)PerlIO_flush(serr);
1932 }
599cee73
PM
1933 my_failure_exit();
1934
1935 }
1936 else {
1937 if (PL_warnhook) {
cea2e8a9 1938 /* sv_2cv might call Perl_warn() */
599cee73
PM
1939 SV *oldwarnhook = PL_warnhook;
1940 ENTER;
1941 SAVESPTR(PL_warnhook);
1942 PL_warnhook = Nullsv;
1943 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
3a1f2dc9 1944 LEAVE;
599cee73
PM
1945 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1946 dSP;
1947 SV *msg;
a1d180c4 1948
599cee73 1949 ENTER;
3a1f2dc9 1950 save_re_context();
06bf62c7 1951 msg = newSVpvn(message, msglen);
599cee73
PM
1952 SvREADONLY_on(msg);
1953 SAVEFREESV(msg);
a1d180c4 1954
3a1f2dc9 1955 PUSHSTACKi(PERLSI_WARNHOOK);
599cee73
PM
1956 PUSHMARK(sp);
1957 XPUSHs(msg);
1958 PUTBACK;
864dbfa3 1959 call_sv((SV*)cv, G_DISCARD);
3a1f2dc9 1960 POPSTACK;
599cee73
PM
1961 LEAVE;
1962 return;
1963 }
1964 }
bf49b057
GS
1965 {
1966 PerlIO *serr = Perl_error_log;
1967 PerlIO_write(serr, message, msglen);
599cee73 1968#ifdef LEAKTEST
a1d180c4 1969 DEBUG_L(*message == '!'
06247ec9
JH
1970 ? (xstat(message[1]=='!'
1971 ? (message[2]=='!' ? 2 : 1)
1972 : 0)
1973 , 0)
1974 : 0);
599cee73 1975#endif
bf49b057
GS
1976 (void)PerlIO_flush(serr);
1977 }
599cee73
PM
1978 }
1979}
1980
13b6e58c
JH
1981#ifdef USE_ENVIRON_ARRAY
1982 /* VMS' and EPOC's my_setenv() is in vms.c and epoc.c */
47dafe4d 1983#if !defined(WIN32)
8d063cd8 1984void
864dbfa3 1985Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1986{
f2517201
GS
1987#ifndef PERL_USE_SAFE_PUTENV
1988 /* most putenv()s leak, so we manipulate environ directly */
79072805 1989 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1990
3280af22 1991 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW
1992 I32 j;
1993 I32 max;
fe14fcc3
LW
1994 char **tmpenv;
1995
de3bb511 1996 /*SUPPRESS 530*/
fe14fcc3 1997 for (max = i; environ[max]; max++) ;
f2517201
GS
1998 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1999 for (j=0; j<max; j++) { /* copy environment */
2000 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
2001 strcpy(tmpenv[j], environ[j]);
2002 }
fe14fcc3
LW
2003 tmpenv[max] = Nullch;
2004 environ = tmpenv; /* tell exec where it is now */
2005 }
a687059c 2006 if (!val) {
f2517201 2007 safesysfree(environ[i]);
a687059c
LW
2008 while (environ[i]) {
2009 environ[i] = environ[i+1];
2010 i++;
2011 }
2012 return;
2013 }
8d063cd8 2014 if (!environ[i]) { /* does not exist yet */
f2517201 2015 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW
2016 environ[i+1] = Nullch; /* make sure it's null terminated */
2017 }
fe14fcc3 2018 else
f2517201
GS
2019 safesysfree(environ[i]);
2020 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
2021
a687059c 2022 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
f2517201
GS
2023
2024#else /* PERL_USE_SAFE_PUTENV */
47dafe4d
FE
2025# if defined(__CYGWIN__)
2026 setenv(nam, val, 1);
2027# else
f2517201
GS
2028 char *new_env;
2029
2030 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
f2517201 2031 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
f2517201 2032 (void)putenv(new_env);
47dafe4d 2033# endif /* __CYGWIN__ */
f2517201 2034#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW
2035}
2036
47dafe4d 2037#else /* WIN32 */
68dc0745
PP
2038
2039void
864dbfa3 2040Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 2041{
ac5c734f
GS
2042 register char *envstr;
2043 STRLEN len = strlen(nam) + 3;
2044 if (!val) {
2045 val = "";
2046 }
2047 len += strlen(val);
2048 New(904, envstr, len, char);
2049 (void)sprintf(envstr,"%s=%s",nam,val);
2050 (void)PerlEnv_putenv(envstr);
2051 Safefree(envstr);
3e3baf6d
TB
2052}
2053
2054#endif /* WIN32 */
2055
2056I32
864dbfa3 2057Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB
2058{
2059 register I32 i, len = strlen(nam);
2060
2061 for (i = 0; environ[i]; i++) {
2062 if (
2063#ifdef WIN32
2064 strnicmp(environ[i],nam,len) == 0
2065#else
2066 strnEQ(environ[i],nam,len)
2067#endif
2068 && environ[i][len] == '=')
2069 break; /* strnEQ must come first to avoid */
2070 } /* potential SEGV's */
2071 return i;
68dc0745
PP
2072}
2073
ed79a026 2074#endif /* !VMS && !EPOC*/
378cc40b 2075
16d20bd9 2076#ifdef UNLINK_ALL_VERSIONS
79072805 2077I32
864dbfa3 2078Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 2079{
79072805 2080 I32 i;
378cc40b 2081
6ad3d225 2082 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW
2083 return i ? 0 : -1;
2084}
2085#endif
2086
7a3f2258 2087/* this is a drop-in replacement for bcopy() */
85e6fe83 2088#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 2089char *
7a3f2258 2090Perl_my_bcopy(register const char *from,register char *to,register I32 len)
378cc40b
LW
2091{
2092 char *retval = to;
2093
7c0587c8
LW
2094 if (from - to >= 0) {
2095 while (len--)
2096 *to++ = *from++;
2097 }
2098 else {
2099 to += len;
2100 from += len;
2101 while (len--)
faf8582f 2102 *(--to) = *(--from);
7c0587c8 2103 }
378cc40b
LW
2104 return retval;
2105}
ffed7fef 2106#endif
378cc40b 2107
7a3f2258 2108/* this is a drop-in replacement for memset() */
fc36a67e
PP
2109#ifndef HAS_MEMSET
2110void *
7a3f2258 2111Perl_my_memset(register char *loc, register I32 ch, register I32 len)
fc36a67e
PP
2112{
2113 char *retval = loc;
2114
2115 while (len--)
2116 *loc++ = ch;
2117 return retval;
2118}
2119#endif
2120
7a3f2258 2121/* this is a drop-in replacement for bzero() */
7c0587c8 2122#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 2123char *
7a3f2258 2124Perl_my_bzero(register char *loc, register I32 len)
378cc40b
LW
2125{
2126 char *retval = loc;
2127
2128 while (len--)
2129 *loc++ = 0;
2130 return retval;
2131}
2132#endif
7c0587c8 2133
7a3f2258 2134/* this is a drop-in replacement for memcmp() */
36477c24 2135#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2136I32
7a3f2258 2137Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
7c0587c8 2138{
36477c24
PP
2139 register U8 *a = (U8 *)s1;
2140 register U8 *b = (U8 *)s2;
79072805 2141 register I32 tmp;
7c0587c8
LW
2142
2143 while (len--) {
36477c24 2144 if (tmp = *a++ - *b++)
7c0587c8
LW
2145 return tmp;
2146 }
2147 return 0;
2148}
36477c24 2149#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2150
fe14fcc3 2151#ifndef HAS_VPRINTF
a687059c 2152
85e6fe83 2153#ifdef USE_CHAR_VSPRINTF
a687059c
LW
2154char *
2155#else
2156int
2157#endif
08105a92 2158vsprintf(char *dest, const char *pat, char *args)
a687059c
LW
2159{
2160 FILE fakebuf;
2161
2162 fakebuf._ptr = dest;
2163 fakebuf._cnt = 32767;
35c8bce7
LW
2164#ifndef _IOSTRG
2165#define _IOSTRG 0
2166#endif
a687059c
LW
2167 fakebuf._flag = _IOWRT|_IOSTRG;
2168 _doprnt(pat, args, &fakebuf); /* what a kludge */
2169 (void)putc('\0', &fakebuf);
85e6fe83 2170#ifdef USE_CHAR_VSPRINTF
a687059c
LW
2171 return(dest);
2172#else
2173 return 0; /* perl doesn't use return value */
2174#endif
2175}
2176
fe14fcc3 2177#endif /* HAS_VPRINTF */
a687059c
LW
2178
2179#ifdef MYSWAP
ffed7fef 2180#if BYTEORDER != 0x4321
a687059c 2181short
864dbfa3 2182Perl_my_swap(pTHX_ short s)
a687059c
LW
2183{
2184#if (BYTEORDER & 1) == 0
2185 short result;
2186
2187 result = ((s & 255) << 8) + ((s >> 8) & 255);
2188 return result;
2189#else
2190 return s;
2191#endif
2192}
2193
2194long
864dbfa3 2195Perl_my_htonl(pTHX_ long l)
a687059c
LW
2196{
2197 union {
2198 long result;
ffed7fef 2199 char c[sizeof(long)];
a687059c
LW
2200 } u;
2201
ffed7fef 2202#if BYTEORDER == 0x1234
a687059c
LW
2203 u.c[0] = (l >> 24) & 255;
2204 u.c[1] = (l >> 16) & 255;
2205 u.c[2] = (l >> 8) & 255;
2206 u.c[3] = l & 255;
2207 return u.result;
2208#else
ffed7fef 2209#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2210 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2211#else
79072805
LW
2212 register I32 o;
2213 register I32 s;
a687059c 2214
ffed7fef
LW
2215 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2216 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW
2217 }
2218 return u.result;
2219#endif
2220#endif
2221}
2222
2223long
864dbfa3 2224Perl_my_ntohl(pTHX_ long l)
a687059c
LW
2225{
2226 union {
2227 long l;
ffed7fef 2228 char c[sizeof(long)];
a687059c
LW
2229 } u;
2230
ffed7fef 2231#if BYTEORDER == 0x1234
a687059c
LW
2232 u.c[0] = (l >> 24) & 255;
2233 u.c[1] = (l >> 16) & 255;
2234 u.c[2] = (l >> 8) & 255;
2235 u.c[3] = l & 255;
2236 return u.l;
2237#else
ffed7fef 2238#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2239 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2240#else
79072805
LW
2241 register I32 o;
2242 register I32 s;
a687059c
LW
2243
2244 u.l = l;
2245 l = 0;
ffed7fef
LW
2246 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2247 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW
2248 }
2249 return l;
2250#endif
2251#endif
2252}
2253
ffed7fef 2254#endif /* BYTEORDER != 0x4321 */
988174c1
LW
2255#endif /* MYSWAP */
2256
2257/*
2258 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2259 * If these functions are defined,
2260 * the BYTEORDER is neither 0x1234 nor 0x4321.
2261 * However, this is not assumed.
2262 * -DWS
2263 */
2264
2265#define HTOV(name,type) \
2266 type \
ba106d47 2267 name (register type n) \
988174c1
LW
2268 { \
2269 union { \
2270 type value; \
2271 char c[sizeof(type)]; \
2272 } u; \
79072805
LW
2273 register I32 i; \
2274 register I32 s; \
988174c1
LW
2275 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2276 u.c[i] = (n >> s) & 0xFF; \
2277 } \
2278 return u.value; \
2279 }
2280
2281#define VTOH(name,type) \
2282 type \
ba106d47 2283 name (register type n) \
988174c1
LW
2284 { \
2285 union { \
2286 type value; \
2287 char c[sizeof(type)]; \
2288 } u; \
79072805
LW
2289 register I32 i; \
2290 register I32 s; \
988174c1
LW
2291 u.value = n; \
2292 n = 0; \
2293 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2294 n += (u.c[i] & 0xFF) << s; \
2295 } \
2296 return n; \
2297 }
2298
2299#if defined(HAS_HTOVS) && !defined(htovs)
2300HTOV(htovs,short)
2301#endif
2302#if defined(HAS_HTOVL) && !defined(htovl)
2303HTOV(htovl,long)
2304#endif
2305#if defined(HAS_VTOHS) && !defined(vtohs)
2306VTOH(vtohs,short)
2307#endif
2308#if defined(HAS_VTOHL) && !defined(vtohl)
2309VTOH(vtohl,long)
2310#endif
a687059c 2311
4a7d1889
NIS
2312PerlIO *
2313Perl_my_popen_list(pTHX_ char *mode, int n, SV **args)
2314{
1f852d0d
NIS
2315#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(OS2) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2316 int p[2];
2317 register I32 This, that;
2318 register Pid_t pid;
2319 SV *sv;
2320 I32 did_pipes = 0;
2321 int pp[2];
2322
2323 PERL_FLUSHALL_FOR_CHILD;
2324 This = (*mode == 'w');
2325 that = !This;
2326 if (PL_tainting) {
2327 taint_env();
2328 taint_proper("Insecure %s%s", "EXEC");
2329 }
2330 if (PerlProc_pipe(p) < 0)
2331 return Nullfp;
2332 /* Try for another pipe pair for error return */
2333 if (PerlProc_pipe(pp) >= 0)
2334 did_pipes = 1;
2335 while ((pid = vfork()) < 0) {
2336 if (errno != EAGAIN) {
2337 PerlLIO_close(p[This]);
2338 if (did_pipes) {
2339 PerlLIO_close(pp[0]);
2340 PerlLIO_close(pp[1]);
2341 }
2342 return Nullfp;
2343 }
2344 sleep(5);
2345 }
2346 if (pid == 0) {
2347 /* Child */
1f852d0d
NIS
2348#undef THIS
2349#undef THAT
2350#define THIS that
2351#define THAT This
2352 /* Close parent's end of _the_ pipe */
2353 PerlLIO_close(p[THAT]);
2354 /* Close parent's end of error status pipe (if any) */
2355 if (did_pipes) {
2356 PerlLIO_close(pp[0]);
2357#if defined(HAS_FCNTL) && defined(F_SETFD)
2358 /* Close error pipe automatically if exec works */
2359 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2360#endif
2361 }
2362 /* Now dup our end of _the_ pipe to right position */
2363 if (p[THIS] != (*mode == 'r')) {
2364 PerlLIO_dup2(p[THIS], *mode == 'r');
2365 PerlLIO_close(p[THIS]);
2366 }
2367#if !defined(HAS_FCNTL) || !defined(F_SETFD)
2368 /* No automatic close - do it by hand */
b7953727
JH
2369# ifndef NOFILE
2370# define NOFILE 20
2371# endif
a080fe3d
NIS
2372 {
2373 int fd;
2374
2375 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++) {
2376 if (fd != pp[1])
2377 PerlLIO_close(fd);
2378 }
1f852d0d
NIS
2379 }
2380#endif
2381 do_aexec5(Nullsv, args-1, args-1+n, pp[1], did_pipes);
2382 PerlProc__exit(1);
2383#undef THIS
2384#undef THAT
2385 }
2386 /* Parent */
2387 do_execfree(); /* free any memory malloced by child on vfork */
2388 /* Close child's end of pipe */
2389 PerlLIO_close(p[that]);
2390 if (did_pipes)
2391 PerlLIO_close(pp[1]);
2392 /* Keep the lower of the two fd numbers */
2393 if (p[that] < p[This]) {
2394 PerlLIO_dup2(p[This], p[that]);
2395 PerlLIO_close(p[This]);
2396 p[This] = p[that];
2397 }
2398 LOCK_FDPID_MUTEX;
2399 sv = *av_fetch(PL_fdpid,p[This],TRUE);
2400 UNLOCK_FDPID_MUTEX;
2401 (void)SvUPGRADE(sv,SVt_IV);
2402 SvIVX(sv) = pid;
2403 PL_forkprocess = pid;
2404 /* If we managed to get status pipe check for exec fail */
2405 if (did_pipes && pid > 0) {
2406 int errkid;
2407 int n = 0, n1;
2408
2409 while (n < sizeof(int)) {
2410 n1 = PerlLIO_read(pp[0],
2411 (void*)(((char*)&errkid)+n),
2412 (sizeof(int)) - n);
2413 if (n1 <= 0)
2414 break;
2415 n += n1;
2416 }
2417 PerlLIO_close(pp[0]);
2418 did_pipes = 0;
2419 if (n) { /* Error */
2420 int pid2, status;
2421 if (n != sizeof(int))
2422 Perl_croak(aTHX_ "panic: kid popen errno read");
2423 do {
2424 pid2 = wait4pid(pid, &status, 0);
2425 } while (pid2 == -1 && errno == EINTR);
2426 errno = errkid; /* Propagate errno from kid */
2427 return Nullfp;
2428 }
2429 }
2430 if (did_pipes)
2431 PerlLIO_close(pp[0]);
2432 return PerlIO_fdopen(p[This], mode);
2433#else
4a7d1889
NIS
2434 Perl_croak(aTHX_ "List form of piped open not implemented");
2435 return (PerlIO *) NULL;
1f852d0d 2436#endif
4a7d1889
NIS
2437}
2438
5f05dabc 2439 /* VMS' my_popen() is in VMS.c, same with OS/2. */
cd39f2b6 2440#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
760ac839 2441PerlIO *
864dbfa3 2442Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW
2443{
2444 int p[2];
8ac85365 2445 register I32 This, that;
d8a83dd3 2446 register Pid_t pid;
79072805 2447 SV *sv;
1738f5c4 2448 I32 doexec = strNE(cmd,"-");
e446cec8
IZ
2449 I32 did_pipes = 0;
2450 int pp[2];
a687059c 2451
45bc9206 2452 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ
2453#ifdef OS2
2454 if (doexec) {
23da6c43 2455 return my_syspopen(aTHX_ cmd,mode);
ddcf38b7 2456 }
a1d180c4 2457#endif
8ac85365
NIS
2458 This = (*mode == 'w');
2459 that = !This;
3280af22 2460 if (doexec && PL_tainting) {
bbce6d69
PP
2461 taint_env();
2462 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2463 }
c2267164
IZ
2464 if (PerlProc_pipe(p) < 0)
2465 return Nullfp;
e446cec8
IZ
2466 if (doexec && PerlProc_pipe(pp) >= 0)
2467 did_pipes = 1;
a687059c
LW
2468 while ((pid = (doexec?vfork():fork())) < 0) {
2469 if (errno != EAGAIN) {
6ad3d225 2470 PerlLIO_close(p[This]);
e446cec8
IZ
2471 if (did_pipes) {
2472 PerlLIO_close(pp[0]);
2473 PerlLIO_close(pp[1]);
2474 }
a687059c 2475 if (!doexec)
cea2e8a9 2476 Perl_croak(aTHX_ "Can't fork");
a687059c
LW
2477 return Nullfp;
2478 }
2479 sleep(5);
2480 }
2481 if (pid == 0) {
79072805
LW
2482 GV* tmpgv;
2483
30ac6d9b
GS
2484#undef THIS
2485#undef THAT
a687059c 2486#define THIS that
8ac85365 2487#define THAT This
6ad3d225 2488 PerlLIO_close(p[THAT]);
e446cec8
IZ
2489 if (did_pipes) {
2490 PerlLIO_close(pp[0]);
2491#if defined(HAS_FCNTL) && defined(F_SETFD)
2492 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2493#endif
2494 }
a687059c 2495 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS
2496 PerlLIO_dup2(p[THIS], *mode == 'r');
2497 PerlLIO_close(p[THIS]);
a687059c 2498 }
4435c477 2499#ifndef OS2
a687059c 2500 if (doexec) {
a0d0e21e 2501#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW
2502 int fd;
2503
2504#ifndef NOFILE
2505#define NOFILE 20
2506#endif
a080fe3d
NIS
2507 {
2508 int fd;
2509
2510 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
2511 if (fd != pp[1])
2512 PerlLIO_close(fd);
2513 }
ae986130 2514#endif
a080fe3d
NIS
2515 /* may or may not use the shell */
2516 do_exec3(cmd, pp[1], did_pipes);
6ad3d225 2517 PerlProc__exit(1);
a687059c 2518 }
4435c477 2519#endif /* defined OS2 */
de3bb511 2520 /*SUPPRESS 560*/
155aba94 2521 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 2522 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
3280af22
NIS
2523 PL_forkprocess = 0;
2524 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW
2525 return Nullfp;
2526#undef THIS
2527#undef THAT
2528 }
62b28dd9 2529 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2530 PerlLIO_close(p[that]);
e446cec8
IZ
2531 if (did_pipes)
2532 PerlLIO_close(pp[1]);
8ac85365 2533 if (p[that] < p[This]) {
6ad3d225
GS
2534 PerlLIO_dup2(p[This], p[that]);
2535 PerlLIO_close(p[This]);
8ac85365 2536 p[This] = p[that];
62b28dd9 2537 }
4755096e 2538 LOCK_FDPID_MUTEX;
3280af22 2539 sv = *av_fetch(PL_fdpid,p[This],TRUE);
4755096e 2540 UNLOCK_FDPID_MUTEX;
a0d0e21e 2541 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2542 SvIVX(sv) = pid;
3280af22 2543 PL_forkprocess = pid;
e446cec8
IZ
2544 if (did_pipes && pid > 0) {
2545 int errkid;
2546 int n = 0, n1;
2547
2548 while (n < sizeof(int)) {
2549 n1 = PerlLIO_read(pp[0],
2550 (void*)(((char*)&errkid)+n),
2551 (sizeof(int)) - n);
2552 if (n1 <= 0)
2553 break;
2554 n += n1;
2555 }
2f96c702
IZ
2556 PerlLIO_close(pp[0]);
2557 did_pipes = 0;
e446cec8 2558 if (n) { /* Error */
faa466a7 2559 int pid2, status;
e446cec8 2560 if (n != sizeof(int))
cea2e8a9 2561 Perl_croak(aTHX_ "panic: kid popen errno read");
faa466a7
RG
2562 do {
2563 pid2 = wait4pid(pid, &status, 0);
2564 } while (pid2 == -1 && errno == EINTR);
e446cec8
IZ
2565 errno = errkid; /* Propagate errno from kid */
2566 return Nullfp;
2567 }
2568 }
2569 if (did_pipes)
2570 PerlLIO_close(pp[0]);
8ac85365 2571 return PerlIO_fdopen(p[This], mode);
a687059c 2572}
7c0587c8 2573#else
55497cff 2574#if defined(atarist) || defined(DJGPP)
7c0587c8 2575FILE *popen();
760ac839 2576PerlIO *
864dbfa3 2577Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2578{
45bc9206 2579 PERL_FLUSHALL_FOR_CHILD;
a1d180c4
NIS
2580 /* Call system's popen() to get a FILE *, then import it.
2581 used 0 for 2nd parameter to PerlIO_importFILE;
2582 apparently not used
2583 */
2584 return PerlIO_importFILE(popen(cmd, mode), 0);
7c0587c8
LW
2585}
2586#endif
2587
2588#endif /* !DOSISH */
a687059c 2589
748a9306 2590#ifdef DUMP_FDS
35ff7856 2591void
864dbfa3 2592Perl_dump_fds(pTHX_ char *s)
ae986130
LW
2593{
2594 int fd;
2595 struct stat tmpstatbuf;
2596
bf49b057 2597 PerlIO_printf(Perl_debug_log,"%s", s);
ae986130 2598 for (fd = 0; fd < 32; fd++) {
6ad3d225 2599 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
bf49b057 2600 PerlIO_printf(Perl_debug_log," %d",fd);
ae986130 2601 }
bf49b057 2602 PerlIO_printf(Perl_debug_log,"\n");
ae986130 2603}
35ff7856 2604#endif /* DUMP_FDS */
ae986130 2605
fe14fcc3 2606#ifndef HAS_DUP2
fec02dd3 2607int
ba106d47 2608dup2(int oldfd, int newfd)
a687059c 2609{
a0d0e21e 2610#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD
2611 if (oldfd == newfd)
2612 return oldfd;
6ad3d225 2613 PerlLIO_close(newfd);
fec02dd3 2614 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2615#else
fc36a67e
PP
2616#define DUP2_MAX_FDS 256
2617 int fdtmp[DUP2_MAX_FDS];
79072805 2618 I32 fdx = 0;
ae986130
LW
2619 int fd;
2620
fe14fcc3 2621 if (oldfd == newfd)
fec02dd3 2622 return oldfd;
6ad3d225 2623 PerlLIO_close(newfd);
fc36a67e 2624 /* good enough for low fd's... */
6ad3d225 2625 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2626 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2627 PerlLIO_close(fd);
fc36a67e
PP
2628 fd = -1;
2629 break;
2630 }
ae986130 2631 fdtmp[fdx++] = fd;
fc36a67e 2632 }
ae986130 2633 while (fdx > 0)
6ad3d225 2634 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2635 return fd;
62b28dd9 2636#endif
a687059c
LW
2637}
2638#endif
2639
64ca3a65 2640#ifndef PERL_MICRO
ff68c719
PP
2641#ifdef HAS_SIGACTION
2642
2643Sighandler_t
864dbfa3 2644Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719
PP
2645{
2646 struct sigaction act, oact;
2647
2648 act.sa_handler = handler;
2649 sigemptyset(&act.sa_mask);
2650 act.sa_flags = 0;
2651#ifdef SA_RESTART
0a8e0eff 2652#if !defined(USE_PERLIO) || defined(PERL_OLD_SIGNALS)
ff68c719
PP
2653 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2654#endif
0a8e0eff 2655#endif
85264bed
CS
2656#ifdef SA_NOCLDWAIT
2657 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2658 act.sa_flags |= SA_NOCLDWAIT;
2659#endif
ff68c719 2660 if (sigaction(signo, &act, &oact) == -1)
36477c24 2661 return SIG_ERR;
ff68c719 2662 else
36477c24 2663 return oact.sa_handler;
ff68c719
PP
2664}
2665
2666Sighandler_t
864dbfa3 2667Perl_rsignal_state(pTHX_ int signo)
ff68c719
PP
2668{
2669 struct sigaction oact;
2670
2671 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2672 return SIG_ERR;
2673 else
2674 return oact.sa_handler;
2675}
2676
2677int
864dbfa3 2678Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719
PP
2679{
2680 struct sigaction act;
2681
2682 act.sa_handler = handler;
2683 sigemptyset(&act.sa_mask);
2684 act.sa_flags = 0;
2685#ifdef SA_RESTART
0a8e0eff 2686#if !defined(USE_PERLIO) || defined(PERL_OLD_SIGNALS)
ff68c719
PP
2687 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2688#endif
0a8e0eff 2689#endif
85264bed
CS
2690#ifdef SA_NOCLDWAIT
2691 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2692 act.sa_flags |= SA_NOCLDWAIT;
2693#endif
ff68c719
PP
2694 return sigaction(signo, &act, save);
2695}
2696
2697int
864dbfa3 2698Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719
PP
2699{
2700 return sigaction(signo, save, (struct sigaction *)NULL);
2701}
2702
2703#else /* !HAS_SIGACTION */
2704
2705Sighandler_t
864dbfa3 2706Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2707{
6ad3d225 2708 return PerlProc_signal(signo, handler);
ff68c719
PP
2709}
2710
2711static int sig_trapped;
2712
2713static
2714Signal_t
4e35701f 2715sig_trap(int signo)
ff68c719
PP
2716{
2717 sig_trapped++;
2718}
2719
2720Sighandler_t
864dbfa3 2721Perl_rsignal_state(pTHX_ int signo)
ff68c719
PP
2722{
2723 Sighandler_t oldsig;
2724
2725 sig_trapped = 0;
6ad3d225
GS
2726 oldsig = PerlProc_signal(signo, sig_trap);
2727 PerlProc_signal(signo, oldsig);
ff68c719 2728 if (sig_trapped)
7766f137 2729 PerlProc_kill(PerlProc_getpid(), signo);
ff68c719
PP
2730 return oldsig;
2731}
2732
2733int
864dbfa3 2734Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2735{
6ad3d225 2736 *save = PerlProc_signal(signo, handler);
ff68c719
PP
2737 return (*save == SIG_ERR) ? -1 : 0;
2738}
2739
2740int
864dbfa3 2741Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2742{
6ad3d225 2743 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719
PP
2744}
2745
2746#endif /* !HAS_SIGACTION */
64ca3a65 2747#endif /* !PERL_MICRO */
ff68c719 2748
5f05dabc 2749 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
cd39f2b6 2750#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
79072805 2751I32
864dbfa3 2752Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2753{
ff68c719 2754 Sigsave_t hstat, istat, qstat;
a687059c 2755 int status;
a0d0e21e 2756 SV **svp;
d8a83dd3
JH
2757 Pid_t pid;
2758 Pid_t pid2;
03136e13 2759 bool close_failed;
b7953727 2760 int saved_errno = 0;
03136e13
CS
2761#ifdef VMS
2762 int saved_vaxc_errno;
2763#endif
22fae026
TM
2764#ifdef WIN32
2765 int saved_win32_errno;
2766#endif
a687059c 2767
4755096e 2768 LOCK_FDPID_MUTEX;
3280af22 2769 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
4755096e 2770 UNLOCK_FDPID_MUTEX;
25d92023 2771 pid = (SvTYPE(*svp) == SVt_IV) ? SvIVX(*svp) : -1;
a0d0e21e 2772 SvREFCNT_dec(*svp);
3280af22 2773 *svp = &PL_sv_undef;
ddcf38b7
IZ
2774#ifdef OS2
2775 if (pid == -1) { /* Opened by popen. */
2776 return my_syspclose(ptr);
2777 }
a1d180c4 2778#endif
03136e13
CS
2779 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2780 saved_errno = errno;
2781#ifdef VMS
2782 saved_vaxc_errno = vaxc$errno;
2783#endif
22fae026
TM
2784#ifdef WIN32
2785 saved_win32_errno = GetLastError();
2786#endif
03136e13 2787 }
7c0587c8 2788#ifdef UTS
6ad3d225 2789 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2790#endif
64ca3a65 2791#ifndef PERL_MICRO
ff68c719
PP
2792 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2793 rsignal_save(SIGINT, SIG_IGN, &istat);
2794 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
64ca3a65 2795#endif
748a9306 2796 do {
1d3434b8
GS
2797 pid2 = wait4pid(pid, &status, 0);
2798 } while (pid2 == -1 && errno == EINTR);
64ca3a65 2799#ifndef PERL_MICRO
ff68c719
PP
2800 rsignal_restore(SIGHUP, &hstat);
2801 rsignal_restore(SIGINT, &istat);
2802 rsignal_restore(SIGQUIT, &qstat);
64ca3a65 2803#endif
03136e13
CS
2804 if (close_failed) {
2805 SETERRNO(saved_errno, saved_vaxc_errno);
2806 return -1;
2807 }
1d3434b8 2808 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2809}
4633a7c4
LW
2810#endif /* !DOSISH */
2811
cd39f2b6 2812#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
79072805 2813I32
d8a83dd3 2814Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
20188a90 2815{
b7953727
JH
2816 if (!pid)
2817 return -1;
2818#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2819 {
79072805
LW
2820 SV *sv;
2821 SV** svp;
fc36a67e 2822 char spid[TYPE_CHARS(int)];
20188a90 2823
20188a90 2824 if (pid > 0) {
7b0972df 2825 sprintf(spid, "%"IVdf, (IV)pid);
3280af22
NIS
2826 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2827 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2828 *statusp = SvIVX(*svp);
3280af22 2829 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2830 return pid;
2831 }
2832 }
2833 else {
79072805 2834 HE *entry;
20188a90 2835
3280af22 2836 hv_iterinit(PL_pidstatus);
155aba94 2837 if ((entry = hv_iternext(PL_pidstatus))) {
a0d0e21e 2838 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2839 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2840 *statusp = SvIVX(sv);
7b0972df 2841 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2842 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2843 return pid;
2844 }
b7953727 2845 }
20188a90 2846 }
68a29c53 2847#endif
79072805 2848#ifdef HAS_WAITPID
367f3c24
IZ
2849# ifdef HAS_WAITPID_RUNTIME
2850 if (!HAS_WAITPID_RUNTIME)
2851 goto hard_way;
2852# endif
f55ee38a 2853 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ
2854#endif
2855#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2856 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ
2857#endif
2858#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2859 hard_way:
a0d0e21e
LW
2860 {
2861 I32 result;
2862 if (flags)
cea2e8a9 2863 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2864 else {
76e3520e 2865 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW
2866 pidgone(result,*statusp);
2867 if (result < 0)
2868 *statusp = -1;
2869 }
2870 return result;
a687059c
LW
2871 }
2872#endif
a687059c 2873}
2d7a9237 2874#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2875
7c0587c8 2876void
de3bb511 2877/*SUPPRESS 590*/
d8a83dd3 2878Perl_pidgone(pTHX_ Pid_t pid, int status)
a687059c 2879{
79072805 2880 register SV *sv;
fc36a67e 2881 char spid[TYPE_CHARS(int)];
a687059c 2882
7b0972df 2883 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2884 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2885 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2886 SvIVX(sv) = status;
20188a90 2887 return;
a687059c
LW
2888}
2889
55497cff 2890#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2891int pclose();
ddcf38b7
IZ
2892#ifdef HAS_FORK
2893int /* Cannot prototype with I32
2894 in os2ish.h. */
ba106d47 2895my_syspclose(PerlIO *ptr)
ddcf38b7 2896#else
79072805 2897I32
864dbfa3 2898Perl_my_pclose(pTHX_ PerlIO *ptr)
a1d180c4 2899#endif
a687059c 2900{
760ac839
LW
2901 /* Needs work for PerlIO ! */
2902 FILE *f = PerlIO_findFILE(ptr);
2903 I32 result = pclose(f);
933fea7f
GS
2904#if defined(DJGPP)
2905 result = (result << 8) & 0xff00;
2906#endif
760ac839
LW
2907 PerlIO_releaseFILE(ptr,f);
2908 return result;
a687059c 2909}
7c0587c8 2910#endif
9f68db38
LW
2911
2912void
864dbfa3 2913Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2914{
79072805 2915 register I32 todo;
08105a92 2916 register const char *frombase = from;
9f68db38
LW
2917
2918 if (len == 1) {
08105a92 2919 register const char c = *from;
9f68db38 2920 while (count-- > 0)
5926133d 2921 *to++ = c;
9f68db38
LW
2922 return;
2923 }
2924 while (count-- > 0) {
2925 for (todo = len; todo > 0; todo--) {
2926 *to++ = *from++;
2927 }
2928 from = frombase;
2929 }
2930}
0f85fab0 2931
463ee0b2 2932U32
65202027 2933Perl_cast_ulong(pTHX_ NV f)
0f85fab0 2934{
3bb7c1b4
JH
2935 if (f < 0.0)
2936 return f < I32_MIN ? (U32) I32_MIN : (U32)(I32) f;
2937 if (f < U32_MAX_P1) {
27e2fb84 2938#if CASTFLAGS & 2
3bb7c1b4
JH
2939 if (f < U32_MAX_P1_HALF)
2940 return (U32) f;
2941 f -= U32_MAX_P1_HALF;
2942 return ((U32) f) | (1 + U32_MAX >> 1);
2943#else
2944 return (U32) f;
5d94fbed 2945#endif
3bb7c1b4
JH
2946 }
2947 return f > 0 ? U32_MAX : 0 /* NaN */;
2948}
5d94fbed 2949
ed6116ce 2950I32
65202027 2951Perl_cast_i32(pTHX_ NV f)
ed6116ce 2952{
3bb7c1b4
JH
2953 if (f < I32_MAX_P1)
2954 return f < I32_MIN ? I32_MIN : (I32) f;
2955 if (f < U32_MAX_P1) {
2956#if CASTFLAGS & 2
2957 if (f < U32_MAX_P1_HALF)
2958 return (I32)(U32) f;
2959 f -= U32_MAX_P1_HALF;
2960 return (I32)(((U32) f) | (1 + U32_MAX >> 1));
2961#else
2962 return (I32)(U32) f;
2963#endif
2964 }
2965 return f > 0 ? (I32)U32_MAX : 0 /* NaN */;
ed6116ce 2966}
a0d0e21e
LW
2967
2968IV
65202027 2969Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2970{
3bb7c1b4
JH
2971 if (f < IV_MAX_P1)
2972 return f < IV_MIN ? IV_MIN : (IV) f;
2973 if (f < UV_MAX_P1) {
2974#if CASTFLAGS & 2
2975 /* For future flexibility allowing for sizeof(UV) >= sizeof(IV) */
2976 if (f < UV_MAX_P1_HALF)
2977 return (IV)(UV) f;
2978 f -= UV_MAX_P1_HALF;
2979 return (IV)(((UV) f) | (1 + UV_MAX >> 1));
2980#else
2981 return (IV)(UV) f;
2982#endif
2983 }
2984 return f > 0 ? (IV)UV_MAX : 0 /* NaN */;
a0d0e21e 2985}
5d94fbed
AD
2986
2987UV
65202027 2988Perl_cast_uv(pTHX_ NV f)
5d94fbed 2989{
3bb7c1b4
JH
2990 if (f < 0.0)
2991 return f < IV_MIN ? (UV) IV_MIN : (UV)(IV) f;
2992 if (f < UV_MAX_P1) {
2993#if CASTFLAGS & 2
2994 if (f < UV_MAX_P1_HALF)
2995 return (UV) f;
2996 f -= UV_MAX_P1_HALF;
2997 return ((UV) f) | (1 + UV_MAX >> 1);
2998#else
5d94fbed 2999 return (UV) f;
3bb7c1b4
JH
3000#endif
3001 }
3002 return f > 0 ? UV_MAX : 0 /* NaN */;
5d94fbed
AD
3003}
3004
fe14fcc3 3005#ifndef HAS_RENAME
79072805 3006I32
864dbfa3 3007Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 3008{
93a17b20
LW
3009 char *fa = strrchr(a,'/');
3010 char *fb = strrchr(b,'/');
62b28dd9
LW
3011 struct stat tmpstatbuf1;
3012 struct stat tmpstatbuf2;
46fc3d4c 3013 SV *tmpsv = sv_newmortal();
62b28dd9
LW
3014
3015 if (fa)
3016 fa++;
3017 else
3018 fa = a;
3019 if (fb)
3020 fb++;
3021 else
3022 fb = b;
3023 if (strNE(a,b))
3024 return FALSE;
3025 if (fa == a)
46fc3d4c 3026 sv_setpv(tmpsv, ".");
62b28dd9 3027 else
46fc3d4c 3028 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 3029 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW
3030 return FALSE;
3031 if (fb == b)
46fc3d4c 3032 sv_setpv(tmpsv, ".");
62b28dd9 3033 else
46fc3d4c 3034 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 3035 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW
3036 return FALSE;
3037 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
3038 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
3039}
fe14fcc3
LW
3040#endif /* !HAS_RENAME */
3041
9e24b6e2 3042NV
ba210ebe 3043Perl_scan_bin(pTHX_ char *start, STRLEN len, STRLEN *retlen)
4f19785b
WSI
3044{
3045 register char *s = start;
9e24b6e2
JH
3046 register NV rnv = 0.0;
3047 register UV ruv = 0;
252aa082 3048 register bool seenb = FALSE;
9e24b6e2 3049 register bool overflowed = FALSE;
252aa082
JH
3050
3051 for (; len-- && *s; s++) {
3052 if (!(*s == '0' || *s == '1')) {
b21ed0a9
GS
3053 if (*s == '_' && len && *retlen
3054 && (s[1] == '0' || s[1] == '1'))
3055 {
3056 --len;
3057 ++s;
3058 }
3059 else if (seenb == FALSE && *s == 'b' && ruv == 0) {
252aa082
JH
3060 /* Disallow 0bbb0b0bbb... */
3061 seenb = TRUE;
252aa082
JH
3062 continue;
3063 }
3064 else {
627300f0
JH
3065 if (ckWARN(WARN_DIGIT))
3066 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH
3067 "Illegal binary digit '%c' ignored", *s);
3068 break;
3069 }
9e24b6e2
JH
3070 }
3071 if (!overflowed) {
3072 register UV xuv = ruv << 1;
3073
3074 if ((xuv >> 1) != ruv) {
9e24b6e2
JH
3075 overflowed = TRUE;
3076 rnv = (NV) ruv;
627300f0
JH
3077 if (ckWARN_d(WARN_OVERFLOW))
3078 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 3079 "Integer overflow in binary number");
b21ed0a9
GS
3080 }
3081 else
9e24b6e2
JH
3082 ruv = xuv | (*s - '0');
3083 }
3084 if (overflowed) {
3085 rnv *= 2;
3086 /* If an NV has not enough bits in its mantissa to
3087 * represent an UV this summing of small low-order numbers
3088 * is a waste of time (because the NV cannot preserve
3089 * the low-order bits anyway): we could just remember when
3090 * did we overflow and in the end just multiply rnv by the
2cc4c2dc 3091 * right amount. */
9e24b6e2 3092 rnv += (*s - '0');
f248d071 3093 }
4f19785b 3094 }
9e24b6e2
JH
3095 if (!overflowed)
3096 rnv = (NV) ruv;
893fe2c2 3097 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3098#if UVSIZE > 4
893fe2c2
JH
3099 || (!overflowed && ruv > 0xffffffff )
3100#endif
a1d180c4 3101 ) {
627300f0
JH
3102 if (ckWARN(WARN_PORTABLE))
3103 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 3104 "Binary number > 0b11111111111111111111111111111111 non-portable");
4f19785b
WSI
3105 }
3106 *retlen = s - start;
9e24b6e2 3107 return rnv;
4f19785b 3108}
9e24b6e2
JH
3109
3110NV
ba210ebe 3111Perl_scan_oct(pTHX_ char *start, STRLEN len, STRLEN *retlen)
fe14fcc3
LW
3112{
3113 register char *s = start;
9e24b6e2
JH
3114 register NV rnv = 0.0;
3115 register UV ruv = 0;
3116 register bool overflowed = FALSE;
252aa082
JH
3117
3118 for (; len-- && *s; s++) {
3119 if (!(*s >= '0' && *s <= '7')) {
b21ed0a9
GS
3120 if (*s == '_' && len && *retlen
3121 && (s[1] >= '0' && s[1] <= '7'))
3122 {
3123 --len;
3124 ++s;
3125 }
252aa082 3126 else {
f84f607d
JH
3127 /* Allow \octal to work the DWIM way (that is, stop scanning
3128 * as soon as non-octal characters are seen, complain only iff
3129 * someone seems to want to use the digits eight and nine). */
252aa082 3130 if (*s == '8' || *s == '9') {
627300f0
JH
3131 if (ckWARN(WARN_DIGIT))
3132 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH
3133 "Illegal octal digit '%c' ignored", *s);
3134 }
3135 break;
3136 }
55497cff 3137 }
9e24b6e2 3138 if (!overflowed) {
893fe2c2 3139 register UV xuv = ruv << 3;
9e24b6e2
JH
3140
3141 if ((xuv >> 3) != ruv) {
9e24b6e2
JH
3142 overflowed = TRUE;
3143 rnv = (NV) ruv;
627300f0
JH
3144 if (ckWARN_d(WARN_OVERFLOW))
3145 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 3146 "Integer overflow in octal number");
b21ed0a9
GS
3147 }
3148 else
9e24b6e2
JH
3149 ruv = xuv | (*s - '0');
3150 }
3151 if (overflowed) {
3152 rnv *= 8.0;
3153 /* If an NV has not enough bits in its mantissa to
3154 * represent an UV this summing of small low-order numbers
3155 * is a waste of time (because the NV cannot preserve
3156 * the low-order bits anyway): we could just remember when
3157 * did we overflow and in the end just multiply rnv by the
3158 * right amount of 8-tuples. */
3159 rnv += (NV)(*s - '0');
3160 }
fe14fcc3 3161 }
9e24b6e2
JH
3162 if (!overflowed)
3163 rnv = (NV) ruv;
893fe2c2 3164 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3165#if UVSIZE > 4
893fe2c2
JH
3166 || (!overflowed && ruv > 0xffffffff )
3167#endif
3168 ) {
627300f0
JH
3169 if (ckWARN(WARN_PORTABLE))
3170 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 3171 "Octal number > 037777777777 non-portable");
d008e5eb 3172 }
fe14fcc3 3173 *retlen = s - start;
9e24b6e2 3174 return rnv;
fe14fcc3
LW
3175}
3176
9e24b6e2 3177NV
ba210ebe 3178Perl_scan_hex(pTHX_ char *start, STRLEN len, STRLEN *retlen)
fe14fcc3
LW
3179{
3180 register char *s = start;
9e24b6e2
JH
3181 register NV rnv = 0.0;
3182 register UV ruv = 0;
9e24b6e2 3183 register bool overflowed = FALSE;
9e24b6e2 3184 char *hexdigit;
fe14fcc3 3185
cfd3e6cc
JH
3186 if (len > 2) {
3187 if (s[0] == 'x') {
3188 s++;
3189 len--;
3190 }
3191 else if (len > 3 && s[0] == '0' && s[1] == 'x') {
3192 s+=2;
3193 len-=2;
3194 }
3195 }
3196
9e24b6e2
JH
3197 for (; len-- && *s; s++) {
3198 hexdigit = strchr((char *) PL_hexdigit, *s);
3199 if (!hexdigit) {
b21ed0a9
GS
3200 if (*s == '_' && len && *retlen && s[1]
3201 && (hexdigit = strchr((char *) PL_hexdigit, s[1])))
3202 {
3203 --len;
3204 ++s;
3205 }
a0ed51b3 3206 else {
627300f0
JH
3207 if (ckWARN(WARN_DIGIT))
3208 Perl_warner(aTHX_ WARN_DIGIT,
252aa082 3209 "Illegal hexadecimal digit '%c' ignored", *s);
a0ed51b3
LW
3210 break;
3211 }
3212 }
9e24b6e2
JH
3213 if (!overflowed) {
3214 register UV xuv = ruv << 4;
3215
3216 if ((xuv >> 4) != ruv) {
9e24b6e2
JH
3217 overflowed = TRUE;
3218 rnv = (NV) ruv;
627300f0
JH
3219 if (ckWARN_d(WARN_OVERFLOW))
3220 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 3221 "Integer overflow in hexadecimal number");
b21ed0a9
GS
3222 }
3223 else
9e24b6e2
JH
3224 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3225 }
3226 if (overflowed) {
3227 rnv *= 16.0;
3228 /* If an NV has not enough bits in its mantissa to
3229 * represent an UV this summing of small low-order numbers
3230 * is a waste of time (because the NV cannot preserve
3231 * the low-order bits anyway): we could just remember when
3232 * did we overflow and in the end just multiply rnv by the
3233 * right amount of 16-tuples. */
3234 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3235 }
6ff81951 3236 }
9e24b6e2
JH
3237 if (!overflowed)
3238 rnv = (NV) ruv;
893fe2c2 3239 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3240#if UVSIZE > 4
893fe2c2
JH
3241 || (!overflowed && ruv > 0xffffffff )
3242#endif
a1d180c4 3243 ) {
627300f0
JH
3244 if (ckWARN(WARN_PORTABLE))
3245 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082
JH
3246 "Hexadecimal number > 0xffffffff non-portable");
3247 }
fe14fcc3 3248 *retlen = s - start;
9e24b6e2 3249 return rnv;
fe14fcc3 3250}
760ac839 3251
491527d0 3252char*
864dbfa3 3253Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0 3254{
491527d0
GS
3255 char *xfound = Nullch;
3256 char *xfailed = Nullch;
0f31cffe 3257 char tmpbuf[MAXPATHLEN];
491527d0
GS
3258 register char *s;
3259 I32 len;
3260 int retval;
3261#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3262# define SEARCH_EXTS ".bat", ".cmd", NULL
3263# define MAX_EXT_LEN 4
3264#endif
3265#ifdef OS2
3266# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3267# define MAX_EXT_LEN 4
3268#endif
3269#ifdef VMS
3270# define SEARCH_EXTS ".pl", ".com", NULL
3271# define MAX_EXT_LEN 4
3272#endif
3273 /* additional extensions to try in each dir if scriptname not found */
3274#ifdef SEARCH_EXTS
3275 char *exts[] = { SEARCH_EXTS };
3276 char **ext = search_ext ? search_ext : exts;
3277 int extidx = 0, i = 0;
3278 char *curext = Nullch;
3279#else
3280# define MAX_EXT_LEN 0
3281#endif
3282
3283 /*
3284 * If dosearch is true and if scriptname does not contain path
3285 * delimiters, search the PATH for scriptname.
3286 *
3287 * If SEARCH_EXTS is also defined, will look for each
3288 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3289 * while searching the PATH.
3290 *
3291 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3292 * proceeds as follows:
3293 * If DOSISH or VMSISH:
3294 * + look for ./scriptname{,.foo,.bar}
3295 * + search the PATH for scriptname{,.foo,.bar}
3296 *
3297 * If !DOSISH:
3298 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3299 * this will not look in '.' if it's not in the PATH)
3300 */
84486fc6 3301 tmpbuf[0] = '\0';
491527d0
GS
3302
3303#ifdef VMS
3304# ifdef ALWAYS_DEFTYPES
3305 len = strlen(scriptname);
3306 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3307 int hasdir, idx = 0, deftypes = 1;
3308 bool seen_dot = 1;
3309
3310 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3311# else
3312 if (dosearch) {
3313 int hasdir, idx = 0, deftypes = 1;
3314 bool seen_dot = 1;
3315
3316 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3317# endif
3318 /* The first time through, just add SEARCH_EXTS to whatever we
3319 * already have, so we can check for default file types. */
3320 while (deftypes ||
84486fc6 3321 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS
3322 {
3323 if (deftypes) {
3324 deftypes = 0;
84486fc6 3325 *tmpbuf = '\0';
491527d0 3326 }
84486fc6
GS
3327 if ((strlen(tmpbuf) + strlen(scriptname)
3328 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 3329 continue; /* don't search dir with too-long name */
84486fc6 3330 strcat(tmpbuf, scriptname);
491527d0
GS
3331#else /* !VMS */
3332
3333#ifdef DOSISH
3334 if (strEQ(scriptname, "-"))
3335 dosearch = 0;
3336 if (dosearch) { /* Look in '.' first. */
3337 char *cur = scriptname;
3338#ifdef SEARCH_EXTS
3339 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3340 while (ext[i])
3341 if (strEQ(ext[i++],curext)) {
3342 extidx = -1; /* already has an ext */
3343 break;
3344 }
3345 do {
3346#endif
3347 DEBUG_p(PerlIO_printf(Perl_debug_log,
3348 "Looking for %s\n",cur));
017f25f1
IZ
3349 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3350 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS
3351 dosearch = 0;
3352 scriptname = cur;
3353#ifdef SEARCH_EXTS
3354 break;
3355#endif
3356 }
3357#ifdef SEARCH_EXTS
3358 if (cur == scriptname) {
3359 len = strlen(scriptname);
84486fc6 3360 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 3361 break;
84486fc6 3362 cur = strcpy(tmpbuf, scriptname);
491527d0
GS
3363 }
3364 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 3365 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS
3366#endif
3367 }
3368#endif
3369
cd39f2b6
JH
3370#ifdef MACOS_TRADITIONAL
3371 if (dosearch && !strchr(scriptname, ':') &&
3372 (s = PerlEnv_getenv("Commands")))
3373#else
491527d0
GS
3374 if (dosearch && !strchr(scriptname, '/')
3375#ifdef DOSISH
3376 && !strchr(scriptname, '\\')
3377#endif
cd39f2b6
JH
3378 && (s = PerlEnv_getenv("PATH")))
3379#endif
3380 {
491527d0
GS
3381 bool seen_dot = 0;
3382
3280af22
NIS
3383 PL_bufend = s + strlen(s);
3384 while (s < PL_bufend) {
cd39f2b6
JH
3385#ifdef MACOS_TRADITIONAL
3386 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3387 ',',
3388 &len);
3389#else
491527d0
GS
3390#if defined(atarist) || defined(DOSISH)
3391 for (len = 0; *s
3392# ifdef atarist
3393 && *s != ','
3394# endif
3395 && *s != ';'; len++, s++) {
84486fc6
GS
3396 if (len < sizeof tmpbuf)
3397 tmpbuf[len] = *s;
491527d0 3398 }
84486fc6
GS
3399 if (len < sizeof tmpbuf)
3400 tmpbuf[len] = '\0';
491527d0 3401#else /* ! (atarist || DOSISH) */
3280af22 3402 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS
3403 ':',
3404 &len);
3405#endif /* ! (atarist || DOSISH) */
cd39f2b6 3406#endif /* MACOS_TRADITIONAL */
3280af22 3407 if (s < PL_bufend)
491527d0 3408 s++;
84486fc6 3409 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0 3410 continue; /* don't search dir with too-long name */
cd39f2b6
JH
3411#ifdef MACOS_TRADITIONAL
3412 if (len && tmpbuf[len - 1] != ':')
3413 tmpbuf[len++] = ':';
3414#else
491527d0 3415 if (len
61ae2fbf 3416#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS
3417 && tmpbuf[len - 1] != '/'
3418 && tmpbuf[len - 1] != '\\'
491527d0
GS
3419#endif
3420 )
84486fc6
GS
3421 tmpbuf[len++] = '/';
3422 if (len == 2 && tmpbuf[0] == '.')
491527d0 3423 seen_dot = 1;
cd39f2b6 3424#endif
84486fc6 3425 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS
3426#endif /* !VMS */
3427
3428#ifdef SEARCH_EXTS
84486fc6 3429 len = strlen(tmpbuf);
491527d0
GS
3430 if (extidx > 0) /* reset after previous loop */
3431 extidx = 0;
3432 do {
3433#endif
84486fc6 3434 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3435 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ
3436 if (S_ISDIR(PL_statbuf.st_mode)) {
3437 retval = -1;
3438 }
491527d0
GS
3439#ifdef SEARCH_EXTS
3440 } while ( retval < 0 /* not there */
3441 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3442 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS
3443 );
3444#endif
3445 if (retval < 0)
3446 continue;
3280af22
NIS
3447 if (S_ISREG(PL_statbuf.st_mode)
3448 && cando(S_IRUSR,TRUE,&PL_statbuf)
73811745 3449#if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3280af22 3450 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS
3451#endif
3452 )
3453 {
84486fc6 3454 xfound = tmpbuf; /* bingo! */
491527d0
GS
3455 break;
3456 }
3457 if (!xfailed)
84486fc6 3458 xfailed = savepv(tmpbuf);
491527d0
GS
3459 }
3460#ifndef DOSISH
017f25f1 3461 if (!xfound && !seen_dot && !xfailed &&
a1d180c4 3462 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
017f25f1 3463 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS
3464#endif
3465 seen_dot = 1; /* Disable message. */
9ccb31f9
GS
3466 if (!xfound) {
3467 if (flags & 1) { /* do or die? */
cea2e8a9 3468 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS
3469 (xfailed ? "execute" : "find"),
3470 (xfailed ? xfailed : scriptname),
3471 (xfailed ? "" : " on PATH"),
3472 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3473 }
3474 scriptname = Nullch;
3475 }
491527d0
GS
3476 if (xfailed)
3477 Safefree(xfailed);
3478 scriptname = xfound;
3479 }
9ccb31f9 3480 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS
3481}
3482
ba869deb
GS
3483#ifndef PERL_GET_CONTEXT_DEFINED
3484
3485void *
3486Perl_get_context(void)
3487{
3488#if defined(USE_THREADS) || defined(USE_ITHREADS)
3489# ifdef OLD_PTHREADS_API
3490 pthread_addr_t t;
3491 if (pthread_getspecific(PL_thr_key, &t))
3492 Perl_croak_nocontext("panic: pthread_getspecific");
3493 return (void*)t;
3494# else
bce813aa 3495# ifdef I_MACH_CTHREADS
8b8b35ab 3496 return (void*)cthread_data(cthread_self());
bce813aa 3497# else
8b8b35ab
JH
3498 return (void*)PTHREAD_GETSPECIFIC(PL_thr_key);
3499# endif
c44d3fdb 3500# endif
ba869deb
GS
3501#else
3502 return (void*)NULL;
3503#endif
3504}
3505
3506void
3507Perl_set_context(void *t)
3508{
3509#if defined(USE_THREADS) || defined(USE_ITHREADS)
c44d3fdb
GS
3510# ifdef I_MACH_CTHREADS
3511 cthread_set_data(cthread_self(), t);
3512# else
ba869deb
GS
3513 if (pthread_setspecific(PL_thr_key, t))
3514 Perl_croak_nocontext("panic: pthread_setspecific");
c44d3fdb 3515# endif
ba869deb
GS
3516#endif
3517}
3518
3519#endif /* !PERL_GET_CONTEXT_DEFINED */
491527d0 3520
11343788 3521#ifdef USE_THREADS
ba869deb 3522
12ca11f6
MB
3523#ifdef FAKE_THREADS
3524/* Very simplistic scheduler for now */
3525void
3526schedule(void)
3527{
c7848ba1 3528 thr = thr->i.next_run;
12ca11f6
MB
3529}
3530
3531void
864dbfa3 3532Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB
3533{
3534 *cp = 0;
3535}
3536
3537void
864dbfa3 3538Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3539{
51dd5992 3540 perl_os_thread t;
12ca11f6 3541 perl_cond cond = *cp;
a1d180c4 3542
12ca11f6
MB
3543 if (!cond)
3544 return;
3545 t = cond->thread;
3546 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
3547 t->i.next_run = thr->i.next_run;
3548 thr->i.next_run->i.prev_run = t;
3549 t->i.prev_run = thr;
3550 thr->i.next_run = t;
3551 thr->i.wait_queue = 0;
12ca11f6
MB
3552 /* Remove from the wait queue */
3553 *cp = cond->next;
3554 Safefree(cond);
3555}
3556
3557void
864dbfa3 3558Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3559{
51dd5992 3560 perl_os_thread t;
12ca11f6 3561 perl_cond cond, cond_next;
a1d180c4 3562
12ca11f6
MB
3563 for (cond = *cp; cond; cond = cond_next) {
3564 t = cond->thread;
3565 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
3566 t->i.next_run = thr->i.next_run;
3567 thr->i.next_run->i.prev_run = t;
3568 t->i.prev_run = thr;
3569 thr->i.next_run = t;
3570 thr->i.wait_queue = 0;
12ca11f6
MB
3571 /* Remove from the wait queue */
3572 cond_next = cond->next;
3573 Safefree(cond);
3574 }
3575 *cp = 0;
3576}
3577
3578void
864dbfa3 3579Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB
3580{
3581 perl_cond cond;
3582
c7848ba1 3583 if (thr->i.next_run == thr)
cea2e8a9 3584 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
a1d180c4 3585
0f15f207 3586 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB
3587 cond->thread = thr;
3588 cond->next = *cp;
3589 *cp = cond;
c7848ba1 3590 thr->i.wait_queue = cond;
12ca11f6 3591 /* Remove ourselves from runnable queue */
c7848ba1
MB
3592 thr->i.next_run->i.prev_run = thr->i.prev_run;
3593 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB
3594}
3595#endif /* FAKE_THREADS */
3596
f93b4edd 3597MAGIC *
864dbfa3 3598Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB
3599{
3600 MAGIC *mg;
a1d180c4