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[perl5.git] / util.c
CommitLineData
a0d0e21e 1/* util.c
a687059c 2 *
4eb8286e 3 * Copyright (c) 1991-1999, Larry Wall
a687059c 4 *
d48672a2
LW
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
8d063cd8 7 *
8d063cd8 8 */
a0d0e21e
LW
9
10/*
11 * "Very useful, no doubt, that was to Saruman; yet it seems that he was
12 * not content." --Gandalf
13 */
8d063cd8 14
8d063cd8 15#include "EXTERN.h"
864dbfa3 16#define PERL_IN_UTIL_C
8d063cd8 17#include "perl.h"
62b28dd9 18
e1dfb34b 19#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
a687059c 20#include <signal.h>
62b28dd9 21#endif
a687059c 22
36477c24
PP
23#ifndef SIG_ERR
24# define SIG_ERR ((Sighandler_t) -1)
25#endif
26
bd4080b3 27/* XXX If this causes problems, set i_unistd=undef in the hint file. */
85e6fe83 28#ifdef I_UNISTD
8990e307
LW
29# include <unistd.h>
30#endif
31
a687059c
LW
32#ifdef I_VFORK
33# include <vfork.h>
34#endif
35
94b6baf5
AD
36/* Put this after #includes because fork and vfork prototypes may
37 conflict.
38*/
39#ifndef HAS_VFORK
40# define vfork fork
41#endif
42
fe14fcc3
LW
43#ifdef I_FCNTL
44# include <fcntl.h>
45#endif
46#ifdef I_SYS_FILE
47# include <sys/file.h>
48#endif
49
ff68c719
PP
50#ifdef I_SYS_WAIT
51# include <sys/wait.h>
52#endif
53
097ee67d
JH
54#ifdef I_LOCALE
55# include <locale.h>
56#endif
57
8d063cd8 58#define FLUSH
8d063cd8 59
a0d0e21e 60#ifdef LEAKTEST
a0d0e21e 61
8c52afec
IZ
62long xcount[MAXXCOUNT];
63long lastxcount[MAXXCOUNT];
64long xycount[MAXXCOUNT][MAXYCOUNT];
65long lastxycount[MAXXCOUNT][MAXYCOUNT];
66
a0d0e21e 67#endif
a863c7d1 68
16cebae2
GS
69#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
70# define FD_CLOEXEC 1 /* NeXT needs this */
71#endif
72
f2517201 73/* paranoid version of system's malloc() */
8d063cd8 74
a687059c
LW
75/* NOTE: Do not call the next three routines directly. Use the macros
76 * in handy.h, so that we can easily redefine everything to do tracking of
77 * allocated hunks back to the original New to track down any memory leaks.
20cec16a 78 * XXX This advice seems to be widely ignored :-( --AD August 1996.
a687059c
LW
79 */
80
bd4080b3 81Malloc_t
4f63d024 82Perl_safesysmalloc(MEM_SIZE size)
8d063cd8 83{
54aff467 84 dTHX;
bd4080b3 85 Malloc_t ptr;
55497cff 86#ifdef HAS_64K_LIMIT
62b28dd9 87 if (size > 0xffff) {
16cebae2
GS
88 PerlIO_printf(PerlIO_stderr(),
89 "Allocation too large: %lx\n", size) FLUSH;
54aff467 90 my_exit(1);
62b28dd9 91 }
55497cff 92#endif /* HAS_64K_LIMIT */
34de22dd
LW
93#ifdef DEBUGGING
94 if ((long)size < 0)
4f63d024 95 Perl_croak_nocontext("panic: malloc");
34de22dd 96#endif
6ad3d225 97 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
6b88bc9c 98 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) malloc %ld bytes\n",ptr,PL_an++,(long)size));
8d063cd8
LW
99 if (ptr != Nullch)
100 return ptr;
3280af22 101 else if (PL_nomemok)
7c0587c8 102 return Nullch;
8d063cd8 103 else {
22c35a8c 104 PerlIO_puts(PerlIO_stderr(),PL_no_mem) FLUSH;
54aff467 105 my_exit(1);
4e35701f 106 return Nullch;
8d063cd8
LW
107 }
108 /*NOTREACHED*/
109}
110
f2517201 111/* paranoid version of system's realloc() */
8d063cd8 112
bd4080b3 113Malloc_t
4f63d024 114Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 115{
54aff467 116 dTHX;
bd4080b3 117 Malloc_t ptr;
ecfc5424 118#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE)
6ad3d225 119 Malloc_t PerlMem_realloc();
ecfc5424 120#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 121
55497cff 122#ifdef HAS_64K_LIMIT
5f05dabc
PP
123 if (size > 0xffff) {
124 PerlIO_printf(PerlIO_stderr(),
125 "Reallocation too large: %lx\n", size) FLUSH;
54aff467 126 my_exit(1);
5f05dabc 127 }
55497cff 128#endif /* HAS_64K_LIMIT */
7614df0c 129 if (!size) {
f2517201 130 safesysfree(where);
7614df0c
JD
131 return NULL;
132 }
133
378cc40b 134 if (!where)
f2517201 135 return safesysmalloc(size);
34de22dd
LW
136#ifdef DEBUGGING
137 if ((long)size < 0)
4f63d024 138 Perl_croak_nocontext("panic: realloc");
34de22dd 139#endif
7614df0c 140 ptr = PerlMem_realloc(where,size);
79072805 141
0b250b9e
GS
142 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) rfree\n",where,PL_an++));
143 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) realloc %ld bytes\n",ptr,PL_an++,(long)size));
79072805 144
8d063cd8
LW
145 if (ptr != Nullch)
146 return ptr;
3280af22 147 else if (PL_nomemok)
7c0587c8 148 return Nullch;
8d063cd8 149 else {
22c35a8c 150 PerlIO_puts(PerlIO_stderr(),PL_no_mem) FLUSH;
54aff467 151 my_exit(1);
4e35701f 152 return Nullch;
8d063cd8
LW
153 }
154 /*NOTREACHED*/
155}
156
f2517201 157/* safe version of system's free() */
8d063cd8 158
54310121 159Free_t
4f63d024 160Perl_safesysfree(Malloc_t where)
8d063cd8 161{
54aff467 162 dTHX;
6b88bc9c 163 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) free\n",(char *) where,PL_an++));
378cc40b 164 if (where) {
de3bb511 165 /*SUPPRESS 701*/
6ad3d225 166 PerlMem_free(where);
378cc40b 167 }
8d063cd8
LW
168}
169
f2517201 170/* safe version of system's calloc() */
1050c9ca 171
bd4080b3 172Malloc_t
4f63d024 173Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 174{
54aff467 175 dTHX;
bd4080b3 176 Malloc_t ptr;
1050c9ca 177
55497cff 178#ifdef HAS_64K_LIMIT
5f05dabc
PP
179 if (size * count > 0xffff) {
180 PerlIO_printf(PerlIO_stderr(),
181 "Allocation too large: %lx\n", size * count) FLUSH;
54aff467 182 my_exit(1);
5f05dabc 183 }
55497cff 184#endif /* HAS_64K_LIMIT */
1050c9ca
PP
185#ifdef DEBUGGING
186 if ((long)size < 0 || (long)count < 0)
4f63d024 187 Perl_croak_nocontext("panic: calloc");
1050c9ca 188#endif
0b7c1c42 189 size *= count;
6ad3d225 190 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
6b88bc9c 191 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) calloc %ld x %ld bytes\n",ptr,PL_an++,(long)count,(long)size));
1050c9ca
PP
192 if (ptr != Nullch) {
193 memset((void*)ptr, 0, size);
194 return ptr;
195 }
3280af22 196 else if (PL_nomemok)
1050c9ca
PP
197 return Nullch;
198 else {
22c35a8c 199 PerlIO_puts(PerlIO_stderr(),PL_no_mem) FLUSH;
54aff467 200 my_exit(1);
4e35701f 201 return Nullch;
1050c9ca
PP
202 }
203 /*NOTREACHED*/
204}
205
a687059c
LW
206#ifdef LEAKTEST
207
8c52afec
IZ
208struct mem_test_strut {
209 union {
210 long type;
211 char c[2];
212 } u;
213 long size;
214};
215
216# define ALIGN sizeof(struct mem_test_strut)
217
218# define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
219# define typeof_chunk(ch) \
220 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
221# define set_typeof_chunk(ch,t) \
222 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
223#define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
224 ? MAXYCOUNT - 1 \
225 : ( (size) > 40 \
226 ? ((size) - 1)/8 + 5 \
227 : ((size) - 1)/4))
8d063cd8 228
bd4080b3 229Malloc_t
4f63d024 230Perl_safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 231{
8c52afec 232 register char* where = (char*)safemalloc(size + ALIGN);
8d063cd8 233
8c52afec
IZ
234 xcount[x] += size;
235 xycount[x][SIZE_TO_Y(size)]++;
236 set_typeof_chunk(where, x);
237 sizeof_chunk(where) = size;
238 return (Malloc_t)(where + ALIGN);
8d063cd8 239}
8d063cd8 240
bd4080b3 241Malloc_t
4f63d024 242Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
a687059c 243{
8c52afec
IZ
244 char *where = (char*)wh;
245
246 if (!wh)
247 return safexmalloc(0,size);
248
249 {
250 MEM_SIZE old = sizeof_chunk(where - ALIGN);
251 int t = typeof_chunk(where - ALIGN);
252 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
253
254 xycount[t][SIZE_TO_Y(old)]--;
255 xycount[t][SIZE_TO_Y(size)]++;
256 xcount[t] += size - old;
257 sizeof_chunk(new) = size;
258 return (Malloc_t)(new + ALIGN);
259 }
a687059c
LW
260}
261
262void
4f63d024 263Perl_safexfree(Malloc_t wh)
a687059c 264{
79072805 265 I32 x;
8c52afec
IZ
266 char *where = (char*)wh;
267 MEM_SIZE size;
268
a687059c
LW
269 if (!where)
270 return;
271 where -= ALIGN;
8c52afec 272 size = sizeof_chunk(where);
a687059c 273 x = where[0] + 100 * where[1];
8c52afec
IZ
274 xcount[x] -= size;
275 xycount[x][SIZE_TO_Y(size)]--;
a687059c
LW
276 safefree(where);
277}
278
bd4080b3 279Malloc_t
4f63d024 280Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 281{
8c52afec
IZ
282 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
283 xcount[x] += size;
284 xycount[x][SIZE_TO_Y(size)]++;
285 memset((void*)(where + ALIGN), 0, size * count);
286 set_typeof_chunk(where, x);
287 sizeof_chunk(where) = size;
288 return (Malloc_t)(where + ALIGN);
1050c9ca
PP
289}
290
864dbfa3 291STATIC void
cea2e8a9 292S_xstat(pTHX_ int flag)
8d063cd8 293{
8c52afec
IZ
294 register I32 i, j, total = 0;
295 I32 subtot[MAXYCOUNT];
8d063cd8 296
8c52afec
IZ
297 for (j = 0; j < MAXYCOUNT; j++) {
298 subtot[j] = 0;
299 }
300
301 PerlIO_printf(PerlIO_stderr(), " Id subtot 4 8 12 16 20 24 28 32 36 40 48 56 64 72 80 80+\n", total);
a687059c 302 for (i = 0; i < MAXXCOUNT; i++) {
8c52afec
IZ
303 total += xcount[i];
304 for (j = 0; j < MAXYCOUNT; j++) {
305 subtot[j] += xycount[i][j];
306 }
307 if (flag == 0
308 ? xcount[i] /* Have something */
309 : (flag == 2
310 ? xcount[i] != lastxcount[i] /* Changed */
311 : xcount[i] > lastxcount[i])) { /* Growed */
312 PerlIO_printf(PerlIO_stderr(),"%2d %02d %7ld ", i / 100, i % 100,
313 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
a687059c 314 lastxcount[i] = xcount[i];
8c52afec
IZ
315 for (j = 0; j < MAXYCOUNT; j++) {
316 if ( flag == 0
317 ? xycount[i][j] /* Have something */
318 : (flag == 2
319 ? xycount[i][j] != lastxycount[i][j] /* Changed */
320 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
321 PerlIO_printf(PerlIO_stderr(),"%3ld ",
322 flag == 2
323 ? xycount[i][j] - lastxycount[i][j]
324 : xycount[i][j]);
325 lastxycount[i][j] = xycount[i][j];
326 } else {
327 PerlIO_printf(PerlIO_stderr(), " . ", xycount[i][j]);
328 }
329 }
330 PerlIO_printf(PerlIO_stderr(), "\n");
331 }
332 }
333 if (flag != 2) {
334 PerlIO_printf(PerlIO_stderr(), "Total %7ld ", total);
335 for (j = 0; j < MAXYCOUNT; j++) {
336 if (subtot[j]) {
337 PerlIO_printf(PerlIO_stderr(), "%3ld ", subtot[j]);
338 } else {
339 PerlIO_printf(PerlIO_stderr(), " . ");
340 }
8d063cd8 341 }
8c52afec 342 PerlIO_printf(PerlIO_stderr(), "\n");
8d063cd8 343 }
8d063cd8 344}
a687059c
LW
345
346#endif /* LEAKTEST */
8d063cd8
LW
347
348/* copy a string up to some (non-backslashed) delimiter, if any */
349
350char *
864dbfa3 351Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 352{
fc36a67e
PP
353 register I32 tolen;
354 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW
355 if (*from == '\\') {
356 if (from[1] == delim)
357 from++;
fc36a67e
PP
358 else {
359 if (to < toend)
360 *to++ = *from;
361 tolen++;
362 from++;
363 }
378cc40b 364 }
bedebaa5 365 else if (*from == delim)
8d063cd8 366 break;
fc36a67e
PP
367 if (to < toend)
368 *to++ = *from;
8d063cd8 369 }
bedebaa5
CS
370 if (to < toend)
371 *to = '\0';
fc36a67e 372 *retlen = tolen;
8d063cd8
LW
373 return from;
374}
375
376/* return ptr to little string in big string, NULL if not found */
378cc40b 377/* This routine was donated by Corey Satten. */
8d063cd8
LW
378
379char *
864dbfa3 380Perl_instr(pTHX_ register const char *big, register const char *little)
378cc40b 381{
08105a92 382 register const char *s, *x;
79072805 383 register I32 first;
378cc40b 384
a687059c 385 if (!little)
08105a92 386 return (char*)big;
a687059c 387 first = *little++;
378cc40b 388 if (!first)
08105a92 389 return (char*)big;
378cc40b
LW
390 while (*big) {
391 if (*big++ != first)
392 continue;
393 for (x=big,s=little; *s; /**/ ) {
394 if (!*x)
395 return Nullch;
396 if (*s++ != *x++) {
397 s--;
398 break;
399 }
400 }
401 if (!*s)
08105a92 402 return (char*)(big-1);
378cc40b
LW
403 }
404 return Nullch;
405}
8d063cd8 406
a687059c
LW
407/* same as instr but allow embedded nulls */
408
409char *
864dbfa3 410Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
8d063cd8 411{
08105a92 412 register const char *s, *x;
79072805 413 register I32 first = *little;
08105a92 414 register const char *littleend = lend;
378cc40b 415
a0d0e21e 416 if (!first && little >= littleend)
08105a92 417 return (char*)big;
de3bb511
LW
418 if (bigend - big < littleend - little)
419 return Nullch;
a687059c
LW
420 bigend -= littleend - little++;
421 while (big <= bigend) {
422 if (*big++ != first)
423 continue;
424 for (x=big,s=little; s < littleend; /**/ ) {
425 if (*s++ != *x++) {
426 s--;
427 break;
428 }
429 }
430 if (s >= littleend)
08105a92 431 return (char*)(big-1);
378cc40b 432 }
a687059c
LW
433 return Nullch;
434}
435
436/* reverse of the above--find last substring */
437
438char *
864dbfa3 439Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
a687059c 440{
08105a92
GS
441 register const char *bigbeg;
442 register const char *s, *x;
79072805 443 register I32 first = *little;
08105a92 444 register const char *littleend = lend;
a687059c 445
a0d0e21e 446 if (!first && little >= littleend)
08105a92 447 return (char*)bigend;
a687059c
LW
448 bigbeg = big;
449 big = bigend - (littleend - little++);
450 while (big >= bigbeg) {
451 if (*big-- != first)
452 continue;
453 for (x=big+2,s=little; s < littleend; /**/ ) {
454 if (*s++ != *x++) {
455 s--;
456 break;
457 }
458 }
459 if (s >= littleend)
08105a92 460 return (char*)(big+1);
378cc40b 461 }
a687059c 462 return Nullch;
378cc40b 463}
a687059c 464
bbce6d69
PP
465/*
466 * Set up for a new ctype locale.
467 */
55497cff 468void
864dbfa3 469Perl_new_ctype(pTHX_ const char *newctype)
ef7eada9 470{
36477c24
PP
471#ifdef USE_LOCALE_CTYPE
472
bbce6d69 473 int i;
ef7eada9 474
bbce6d69
PP
475 for (i = 0; i < 256; i++) {
476 if (isUPPER_LC(i))
22c35a8c 477 PL_fold_locale[i] = toLOWER_LC(i);
bbce6d69 478 else if (isLOWER_LC(i))
22c35a8c 479 PL_fold_locale[i] = toUPPER_LC(i);
bbce6d69 480 else
22c35a8c 481 PL_fold_locale[i] = i;
bbce6d69 482 }
bbce6d69 483
36477c24
PP
484#endif /* USE_LOCALE_CTYPE */
485}
bbce6d69
PP
486
487/*
488 * Set up for a new collation locale.
489 */
490void
864dbfa3 491Perl_new_collate(pTHX_ const char *newcoll)
bbce6d69 492{
36477c24
PP
493#ifdef USE_LOCALE_COLLATE
494
bbce6d69 495 if (! newcoll) {
3280af22
NIS
496 if (PL_collation_name) {
497 ++PL_collation_ix;
498 Safefree(PL_collation_name);
499 PL_collation_name = NULL;
500 PL_collation_standard = TRUE;
501 PL_collxfrm_base = 0;
502 PL_collxfrm_mult = 2;
bbce6d69
PP
503 }
504 return;
505 }
506
3280af22
NIS
507 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
508 ++PL_collation_ix;
509 Safefree(PL_collation_name);
510 PL_collation_name = savepv(newcoll);
511 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 512
bbce6d69
PP
513 {
514 /* 2: at most so many chars ('a', 'b'). */
515 /* 50: surely no system expands a char more. */
516#define XFRMBUFSIZE (2 * 50)
517 char xbuf[XFRMBUFSIZE];
518 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
519 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
520 SSize_t mult = fb - fa;
521 if (mult < 1)
cea2e8a9 522 Perl_croak(aTHX_ "strxfrm() gets absurd");
3280af22
NIS
523 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
524 PL_collxfrm_mult = mult;
bbce6d69 525 }
bbce6d69 526 }
bbce6d69 527
36477c24
PP
528#endif /* USE_LOCALE_COLLATE */
529}
bbce6d69 530
097ee67d 531void
51371543 532Perl_set_numeric_radix(pTHX)
097ee67d
JH
533{
534#ifdef USE_LOCALE_NUMERIC
535# ifdef HAS_LOCALECONV
536 struct lconv* lc;
537
538 lc = localeconv();
539 if (lc && lc->decimal_point)
540 /* We assume that decimal separator aka the radix
541 * character is always a single character. If it
542 * ever is a string, this needs to be rethunk. */
543 PL_numeric_radix = *lc->decimal_point;
544 else
545 PL_numeric_radix = 0;
546# endif /* HAS_LOCALECONV */
547#else
548 PL_numeric_radix = 0;
549#endif /* USE_LOCALE_NUMERIC */
550}
551
bbce6d69
PP
552/*
553 * Set up for a new numeric locale.
554 */
555void
864dbfa3 556Perl_new_numeric(pTHX_ const char *newnum)
bbce6d69 557{
36477c24
PP
558#ifdef USE_LOCALE_NUMERIC
559
bbce6d69 560 if (! newnum) {
3280af22
NIS
561 if (PL_numeric_name) {
562 Safefree(PL_numeric_name);
563 PL_numeric_name = NULL;
564 PL_numeric_standard = TRUE;
565 PL_numeric_local = TRUE;
bbce6d69
PP
566 }
567 return;
568 }
569
3280af22
NIS
570 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
571 Safefree(PL_numeric_name);
572 PL_numeric_name = savepv(newnum);
573 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
574 PL_numeric_local = TRUE;
51371543 575 set_numeric_radix();
bbce6d69 576 }
36477c24
PP
577
578#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
579}
580
581void
864dbfa3 582Perl_set_numeric_standard(pTHX)
bbce6d69 583{
5f05dabc
PP
584#ifdef USE_LOCALE_NUMERIC
585
3280af22 586 if (! PL_numeric_standard) {
bbce6d69 587 setlocale(LC_NUMERIC, "C");
3280af22
NIS
588 PL_numeric_standard = TRUE;
589 PL_numeric_local = FALSE;
bbce6d69 590 }
5f05dabc
PP
591
592#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
593}
594
595void
864dbfa3 596Perl_set_numeric_local(pTHX)
bbce6d69 597{
5f05dabc
PP
598#ifdef USE_LOCALE_NUMERIC
599
3280af22
NIS
600 if (! PL_numeric_local) {
601 setlocale(LC_NUMERIC, PL_numeric_name);
602 PL_numeric_standard = FALSE;
603 PL_numeric_local = TRUE;
51371543 604 set_numeric_radix();
bbce6d69 605 }
bbce6d69 606
36477c24 607#endif /* USE_LOCALE_NUMERIC */
5f05dabc 608}
36477c24 609
36477c24
PP
610/*
611 * Initialize locale awareness.
612 */
f0c5b223 613int
864dbfa3 614Perl_init_i18nl10n(pTHX_ int printwarn)
f0c5b223
TB
615{
616 int ok = 1;
617 /* returns
618 * 1 = set ok or not applicable,
619 * 0 = fallback to C locale,
620 * -1 = fallback to C locale failed
621 */
bbce6d69 622
36477c24 623#ifdef USE_LOCALE
bbce6d69 624
36477c24 625#ifdef USE_LOCALE_CTYPE
bbce6d69 626 char *curctype = NULL;
36477c24
PP
627#endif /* USE_LOCALE_CTYPE */
628#ifdef USE_LOCALE_COLLATE
bbce6d69 629 char *curcoll = NULL;
36477c24
PP
630#endif /* USE_LOCALE_COLLATE */
631#ifdef USE_LOCALE_NUMERIC
bbce6d69 632 char *curnum = NULL;
36477c24 633#endif /* USE_LOCALE_NUMERIC */
3aeabbed
JH
634#ifdef __GLIBC__
635 char *language = PerlEnv_getenv("LANGUAGE");
636#endif
76e3520e
GS
637 char *lc_all = PerlEnv_getenv("LC_ALL");
638 char *lang = PerlEnv_getenv("LANG");
bbce6d69 639 bool setlocale_failure = FALSE;
f0c5b223 640
02b32252
CS
641#ifdef LOCALE_ENVIRON_REQUIRED
642
643 /*
644 * Ultrix setlocale(..., "") fails if there are no environment
645 * variables from which to get a locale name.
646 */
647
648 bool done = FALSE;
649
650#ifdef LC_ALL
651 if (lang) {
652 if (setlocale(LC_ALL, ""))
653 done = TRUE;
654 else
655 setlocale_failure = TRUE;
656 }
0644c9cb 657 if (!setlocale_failure) {
02b32252 658#ifdef USE_LOCALE_CTYPE
0644c9cb
IS
659 if (! (curctype =
660 setlocale(LC_CTYPE,
661 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
02b32252
CS
662 ? "" : Nullch)))
663 setlocale_failure = TRUE;
664#endif /* USE_LOCALE_CTYPE */
665#ifdef USE_LOCALE_COLLATE
0644c9cb
IS
666 if (! (curcoll =
667 setlocale(LC_COLLATE,
668 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
02b32252
CS
669 ? "" : Nullch)))
670 setlocale_failure = TRUE;
671#endif /* USE_LOCALE_COLLATE */
672#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS
673 if (! (curnum =
674 setlocale(LC_NUMERIC,
675 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
02b32252
CS
676 ? "" : Nullch)))
677 setlocale_failure = TRUE;
678#endif /* USE_LOCALE_NUMERIC */
679 }
680
0644c9cb 681#endif /* LC_ALL */
02b32252 682
0644c9cb 683#endif /* !LOCALE_ENVIRON_REQUIRED */
5f05dabc 684
0644c9cb 685#ifdef LC_ALL
bbce6d69
PP
686 if (! setlocale(LC_ALL, ""))
687 setlocale_failure = TRUE;
0644c9cb 688#endif /* LC_ALL */
bbce6d69 689
0644c9cb 690 if (!setlocale_failure) {
36477c24 691#ifdef USE_LOCALE_CTYPE
0644c9cb
IS
692 if (! (curctype = setlocale(LC_CTYPE, "")))
693 setlocale_failure = TRUE;
36477c24
PP
694#endif /* USE_LOCALE_CTYPE */
695#ifdef USE_LOCALE_COLLATE
0644c9cb
IS
696 if (! (curcoll = setlocale(LC_COLLATE, "")))
697 setlocale_failure = TRUE;
36477c24
PP
698#endif /* USE_LOCALE_COLLATE */
699#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS
700 if (! (curnum = setlocale(LC_NUMERIC, "")))
701 setlocale_failure = TRUE;
36477c24 702#endif /* USE_LOCALE_NUMERIC */
0644c9cb 703 }
02b32252 704
5f05dabc
PP
705 if (setlocale_failure) {
706 char *p;
707 bool locwarn = (printwarn > 1 ||
708 printwarn &&
76e3520e 709 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)));
20cec16a 710
5f05dabc
PP
711 if (locwarn) {
712#ifdef LC_ALL
713
714 PerlIO_printf(PerlIO_stderr(),
715 "perl: warning: Setting locale failed.\n");
716
717#else /* !LC_ALL */
718
ef7eada9 719 PerlIO_printf(PerlIO_stderr(),
bbce6d69 720 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 721#ifdef USE_LOCALE_CTYPE
bbce6d69 722 if (! curctype)
5f05dabc 723 PerlIO_printf(PerlIO_stderr(), "LC_CTYPE ");
36477c24
PP
724#endif /* USE_LOCALE_CTYPE */
725#ifdef USE_LOCALE_COLLATE
bbce6d69 726 if (! curcoll)
5f05dabc 727 PerlIO_printf(PerlIO_stderr(), "LC_COLLATE ");
36477c24
PP
728#endif /* USE_LOCALE_COLLATE */
729#ifdef USE_LOCALE_NUMERIC
bbce6d69 730 if (! curnum)
5f05dabc 731 PerlIO_printf(PerlIO_stderr(), "LC_NUMERIC ");
36477c24 732#endif /* USE_LOCALE_NUMERIC */
bbce6d69
PP
733 PerlIO_printf(PerlIO_stderr(), "\n");
734
5f05dabc
PP
735#endif /* LC_ALL */
736
760ac839 737 PerlIO_printf(PerlIO_stderr(),
bbce6d69 738 "perl: warning: Please check that your locale settings:\n");
ef7eada9 739
3aeabbed
JH
740#ifdef __GLIBC__
741 PerlIO_printf(PerlIO_stderr(),
742 "\tLANGUAGE = %c%s%c,\n",
743 language ? '"' : '(',
744 language ? language : "unset",
745 language ? '"' : ')');
746#endif
747
ef7eada9 748 PerlIO_printf(PerlIO_stderr(),
bbce6d69
PP
749 "\tLC_ALL = %c%s%c,\n",
750 lc_all ? '"' : '(',
751 lc_all ? lc_all : "unset",
752 lc_all ? '"' : ')');
5f05dabc
PP
753
754 {
755 char **e;
756 for (e = environ; *e; e++) {
757 if (strnEQ(*e, "LC_", 3)
758 && strnNE(*e, "LC_ALL=", 7)
759 && (p = strchr(*e, '=')))
760 PerlIO_printf(PerlIO_stderr(), "\t%.*s = \"%s\",\n",
fb73857a 761 (int)(p - *e), *e, p + 1);
5f05dabc
PP
762 }
763 }
764
ef7eada9 765 PerlIO_printf(PerlIO_stderr(),
bbce6d69 766 "\tLANG = %c%s%c\n",
5f05dabc 767 lang ? '"' : '(',
bbce6d69
PP
768 lang ? lang : "unset",
769 lang ? '"' : ')');
ef7eada9 770
bbce6d69
PP
771 PerlIO_printf(PerlIO_stderr(),
772 " are supported and installed on your system.\n");
5f05dabc 773 }
ef7eada9 774
5f05dabc
PP
775#ifdef LC_ALL
776
777 if (setlocale(LC_ALL, "C")) {
778 if (locwarn)
779 PerlIO_printf(PerlIO_stderr(),
780 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 781 ok = 0;
ef7eada9 782 }
5f05dabc
PP
783 else {
784 if (locwarn)
785 PerlIO_printf(PerlIO_stderr(),
786 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
787 ok = -1;
788 }
bbce6d69 789
5f05dabc
PP
790#else /* ! LC_ALL */
791
792 if (0
36477c24 793#ifdef USE_LOCALE_CTYPE
5f05dabc 794 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24
PP
795#endif /* USE_LOCALE_CTYPE */
796#ifdef USE_LOCALE_COLLATE
5f05dabc 797 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24
PP
798#endif /* USE_LOCALE_COLLATE */
799#ifdef USE_LOCALE_NUMERIC
5f05dabc 800 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 801#endif /* USE_LOCALE_NUMERIC */
5f05dabc
PP
802 )
803 {
804 if (locwarn)
bbce6d69 805 PerlIO_printf(PerlIO_stderr(),
5f05dabc
PP
806 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
807 ok = -1;
bbce6d69 808 }
5f05dabc 809
bbce6d69 810#endif /* ! LC_ALL */
5f05dabc
PP
811
812#ifdef USE_LOCALE_CTYPE
813 curctype = setlocale(LC_CTYPE, Nullch);
814#endif /* USE_LOCALE_CTYPE */
815#ifdef USE_LOCALE_COLLATE
816 curcoll = setlocale(LC_COLLATE, Nullch);
817#endif /* USE_LOCALE_COLLATE */
818#ifdef USE_LOCALE_NUMERIC
819 curnum = setlocale(LC_NUMERIC, Nullch);
820#endif /* USE_LOCALE_NUMERIC */
ef7eada9
JH
821 }
822
36477c24 823#ifdef USE_LOCALE_CTYPE
864dbfa3 824 new_ctype(curctype);
36477c24 825#endif /* USE_LOCALE_CTYPE */
bbce6d69 826
36477c24 827#ifdef USE_LOCALE_COLLATE
864dbfa3 828 new_collate(curcoll);
36477c24 829#endif /* USE_LOCALE_COLLATE */
bbce6d69 830
36477c24 831#ifdef USE_LOCALE_NUMERIC
864dbfa3 832 new_numeric(curnum);
36477c24 833#endif /* USE_LOCALE_NUMERIC */
ef7eada9 834
36477c24 835#endif /* USE_LOCALE */
ef7eada9 836
f0c5b223
TB
837 return ok;
838}
839
bbce6d69
PP
840/* Backwards compatibility. */
841int
864dbfa3 842Perl_init_i18nl14n(pTHX_ int printwarn)
bbce6d69 843{
864dbfa3 844 return init_i18nl10n(printwarn);
bbce6d69 845}
ef7eada9 846
36477c24 847#ifdef USE_LOCALE_COLLATE
ef7eada9 848
bbce6d69
PP
849/*
850 * mem_collxfrm() is a bit like strxfrm() but with two important
851 * differences. First, it handles embedded NULs. Second, it allocates
852 * a bit more memory than needed for the transformed data itself.
853 * The real transformed data begins at offset sizeof(collationix).
854 * Please see sv_collxfrm() to see how this is used.
855 */
856char *
864dbfa3 857Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
bbce6d69
PP
858{
859 char *xbuf;
76e3520e 860 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69
PP
861
862 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
863 /* the +1 is for the terminating NUL. */
864
3280af22 865 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
76e3520e 866 New(171, xbuf, xAlloc, char);
bbce6d69
PP
867 if (! xbuf)
868 goto bad;
869
3280af22
NIS
870 *(U32*)xbuf = PL_collation_ix;
871 xout = sizeof(PL_collation_ix);
bbce6d69
PP
872 for (xin = 0; xin < len; ) {
873 SSize_t xused;
874
875 for (;;) {
76e3520e 876 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69
PP
877 if (xused == -1)
878 goto bad;
76e3520e 879 if (xused < xAlloc - xout)
bbce6d69 880 break;
76e3520e
GS
881 xAlloc = (2 * xAlloc) + 1;
882 Renew(xbuf, xAlloc, char);
bbce6d69
PP
883 if (! xbuf)
884 goto bad;
885 }
ef7eada9 886
bbce6d69
PP
887 xin += strlen(s + xin) + 1;
888 xout += xused;
889
890 /* Embedded NULs are understood but silently skipped
891 * because they make no sense in locale collation. */
892 }
ef7eada9 893
bbce6d69 894 xbuf[xout] = '\0';
3280af22 895 *xlen = xout - sizeof(PL_collation_ix);
bbce6d69
PP
896 return xbuf;
897
898 bad:
899 Safefree(xbuf);
900 *xlen = 0;
901 return NULL;
ef7eada9
JH
902}
903
36477c24 904#endif /* USE_LOCALE_COLLATE */
bbce6d69 905
cf93c79d
IZ
906#define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
907
908/* As a space optimization, we do not compile tables for strings of length
909 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
910 special-cased in fbm_instr().
911
912 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
913
378cc40b 914void
864dbfa3 915Perl_fbm_compile(pTHX_ SV *sv, U32 flags /* not used yet */)
378cc40b 916{
942e002e
GS
917 register U8 *s;
918 register U8 *table;
79072805 919 register U32 i;
0b71040e 920 STRLEN len;
79072805
LW
921 I32 rarest = 0;
922 U32 frequency = 256;
923
cf93c79d
IZ
924 if (flags & FBMcf_TAIL)
925 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
942e002e 926 s = (U8*)SvPV_force(sv, len);
07f14f54 927 (void)SvUPGRADE(sv, SVt_PVBM);
cf93c79d
IZ
928 if (len == 0) /* TAIL might be on on a zero-length string. */
929 return;
02128f11 930 if (len > 2) {
cf93c79d
IZ
931 I32 mlen = len;
932 unsigned char *sb;
933
934 if (mlen > 255)
935 mlen = 255;
936 Sv_Grow(sv,len + 256 + FBM_TABLE_OFFSET);
937 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
938 s = table - 1 - FBM_TABLE_OFFSET; /* Last char */
02128f11 939 for (i = 0; i < 256; i++) {
cf93c79d 940 table[i] = mlen;
02128f11 941 }
cf93c79d 942 table[-1] = flags; /* Not used yet */
02128f11 943 i = 0;
cf93c79d
IZ
944 sb = s - mlen;
945 while (s >= sb) {
946 if (table[*s] == mlen)
947 table[*s] = i;
948 s--, i++;
949 }
378cc40b 950 }
bbce6d69 951 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 952 SvVALID_on(sv);
378cc40b 953
463ee0b2 954 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69 955 for (i = 0; i < len; i++) {
22c35a8c 956 if (PL_freq[s[i]] < frequency) {
bbce6d69 957 rarest = i;
22c35a8c 958 frequency = PL_freq[s[i]];
378cc40b
LW
959 }
960 }
79072805
LW
961 BmRARE(sv) = s[rarest];
962 BmPREVIOUS(sv) = rarest;
cf93c79d
IZ
963 BmUSEFUL(sv) = 100; /* Initial value */
964 if (flags & FBMcf_TAIL)
965 SvTAIL_on(sv);
760ac839 966 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW
967}
968
cf93c79d
IZ
969/* If SvTAIL(littlestr), it has a fake '\n' at end. */
970/* If SvTAIL is actually due to \Z or \z, this gives false positives
971 if multiline */
972
378cc40b 973char *
864dbfa3 974Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
378cc40b 975{
a687059c 976 register unsigned char *s;
cf93c79d
IZ
977 STRLEN l;
978 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
979 register STRLEN littlelen = l;
980 register I32 multiline = flags & FBMrf_MULTILINE;
981
982 if (bigend - big < littlelen) {
983 check_tail:
984 if ( SvTAIL(littlestr)
985 && (bigend - big == littlelen - 1)
986 && (littlelen == 1
987 || *big == *little && memEQ(big, little, littlelen - 1)))
988 return (char*)big;
989 return Nullch;
990 }
378cc40b 991
cf93c79d
IZ
992 if (littlelen <= 2) { /* Special-cased */
993 register char c;
994
995 if (littlelen == 1) {
996 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
997 /* Know that bigend != big. */
998 if (bigend[-1] == '\n')
999 return (char *)(bigend - 1);
1000 return (char *) bigend;
1001 }
1002 s = big;
1003 while (s < bigend) {
1004 if (*s == *little)
1005 return (char *)s;
1006 s++;
1007 }
1008 if (SvTAIL(littlestr))
1009 return (char *) bigend;
1010 return Nullch;
1011 }
1012 if (!littlelen)
1013 return (char*)big; /* Cannot be SvTAIL! */
1014
1015 /* littlelen is 2 */
1016 if (SvTAIL(littlestr) && !multiline) {
1017 if (bigend[-1] == '\n' && bigend[-2] == *little)
1018 return (char*)bigend - 2;
1019 if (bigend[-1] == *little)
1020 return (char*)bigend - 1;
1021 return Nullch;
1022 }
1023 {
1024 /* This should be better than FBM if c1 == c2, and almost
1025 as good otherwise: maybe better since we do less indirection.
1026 And we save a lot of memory by caching no table. */
1027 register unsigned char c1 = little[0];
1028 register unsigned char c2 = little[1];
1029
1030 s = big + 1;
1031 bigend--;
1032 if (c1 != c2) {
1033 while (s <= bigend) {
1034 if (s[0] == c2) {
1035 if (s[-1] == c1)
1036 return (char*)s - 1;
1037 s += 2;
1038 continue;
3fe6f2dc 1039 }
cf93c79d
IZ
1040 next_chars:
1041 if (s[0] == c1) {
1042 if (s == bigend)
1043 goto check_1char_anchor;
1044 if (s[1] == c2)
1045 return (char*)s;
1046 else {
1047 s++;
1048 goto next_chars;
1049 }
1050 }
1051 else
1052 s += 2;
1053 }
1054 goto check_1char_anchor;
1055 }
1056 /* Now c1 == c2 */
1057 while (s <= bigend) {
1058 if (s[0] == c1) {
1059 if (s[-1] == c1)
1060 return (char*)s - 1;
1061 if (s == bigend)
1062 goto check_1char_anchor;
1063 if (s[1] == c1)
1064 return (char*)s;
1065 s += 3;
02128f11 1066 }
c277df42 1067 else
cf93c79d 1068 s += 2;
c277df42 1069 }
c277df42 1070 }
cf93c79d
IZ
1071 check_1char_anchor: /* One char and anchor! */
1072 if (SvTAIL(littlestr) && (*bigend == *little))
1073 return (char *)bigend; /* bigend is already decremented. */
1074 return Nullch;
d48672a2 1075 }
cf93c79d 1076 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
bbce6d69 1077 s = bigend - littlelen;
cf93c79d 1078 if (s >= big
02128f11 1079 && bigend[-1] == '\n'
cf93c79d
IZ
1080 && *s == *little
1081 /* Automatically of length > 2 */
1082 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
bbce6d69 1083 return (char*)s; /* how sweet it is */
cf93c79d
IZ
1084 if (s[1] == *little && memEQ((char*)s + 2,(char*)little + 1,
1085 littlelen - 2))
1086 return (char*)s + 1; /* how sweet it is */
02128f11
IZ
1087 return Nullch;
1088 }
cf93c79d
IZ
1089 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1090 char *b = ninstr((char*)big,(char*)bigend,
1091 (char*)little, (char*)little + littlelen);
1092
1093 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1094 /* Chop \n from littlestr: */
1095 s = bigend - littlelen + 1;
1096 if (*s == *little && memEQ((char*)s + 1, (char*)little + 1,
1097 littlelen - 2))
3fe6f2dc 1098 return (char*)s;
cf93c79d 1099 return Nullch;
a687059c 1100 }
cf93c79d 1101 return b;
a687059c 1102 }
cf93c79d
IZ
1103
1104 { /* Do actual FBM. */
1105 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1106 register unsigned char *oldlittle;
1107
1108 if (littlelen > bigend - big)
1109 return Nullch;
1110 --littlelen; /* Last char found by table lookup */
1111
1112 s = big + littlelen;
1113 little += littlelen; /* last char */
1114 oldlittle = little;
1115 if (s < bigend) {
1116 register I32 tmp;
1117
1118 top2:
1119 /*SUPPRESS 560*/
1120 if (tmp = table[*s]) {
62b28dd9 1121#ifdef POINTERRIGOR
cf93c79d
IZ
1122 if (bigend - s > tmp) {
1123 s += tmp;
1124 goto top2;
1125 }
bbce6d69 1126 s += tmp;
62b28dd9 1127#else
cf93c79d 1128 if ((s += tmp) < bigend)
62b28dd9 1129 goto top2;
cf93c79d
IZ
1130#endif
1131 goto check_end;
1132 }
1133 else { /* less expensive than calling strncmp() */
1134 register unsigned char *olds = s;
1135
1136 tmp = littlelen;
1137
1138 while (tmp--) {
1139 if (*--s == *--little)
1140 continue;
1141 differ:
1142 s = olds + 1; /* here we pay the price for failure */
1143 little = oldlittle;
1144 if (s < bigend) /* fake up continue to outer loop */
1145 goto top2;
1146 goto check_end;
1147 }
1148 return (char *)s;
a687059c 1149 }
378cc40b 1150 }
cf93c79d
IZ
1151 check_end:
1152 if ( s == bigend && (table[-1] & FBMcf_TAIL)
1153 && memEQ(bigend - littlelen, oldlittle - littlelen, littlelen) )
1154 return (char*)bigend - littlelen;
1155 return Nullch;
378cc40b 1156 }
378cc40b
LW
1157}
1158
c277df42
IZ
1159/* start_shift, end_shift are positive quantities which give offsets
1160 of ends of some substring of bigstr.
1161 If `last' we want the last occurence.
1162 old_posp is the way of communication between consequent calls if
1163 the next call needs to find the .
1164 The initial *old_posp should be -1.
cf93c79d
IZ
1165
1166 Note that we take into account SvTAIL, so one can get extra
1167 optimizations if _ALL flag is set.
c277df42
IZ
1168 */
1169
cf93c79d
IZ
1170/* If SvTAIL is actually due to \Z or \z, this gives false positives
1171 if PL_multiline. In fact if !PL_multiline the autoritative answer
1172 is not supported yet. */
1173
378cc40b 1174char *
864dbfa3 1175Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1176{
5c0ca799 1177 dTHR;
a687059c
LW
1178 register unsigned char *s, *x;
1179 register unsigned char *big;
79072805
LW
1180 register I32 pos;
1181 register I32 previous;
1182 register I32 first;
a687059c 1183 register unsigned char *little;
c277df42 1184 register I32 stop_pos;
a687059c 1185 register unsigned char *littleend;
c277df42 1186 I32 found = 0;
378cc40b 1187
c277df42 1188 if (*old_posp == -1
3280af22 1189 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
cf93c79d
IZ
1190 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1191 cant_find:
1192 if ( BmRARE(littlestr) == '\n'
1193 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1194 little = (unsigned char *)(SvPVX(littlestr));
1195 littleend = little + SvCUR(littlestr);
1196 first = *little++;
1197 goto check_tail;
1198 }
378cc40b 1199 return Nullch;
cf93c79d
IZ
1200 }
1201
463ee0b2 1202 little = (unsigned char *)(SvPVX(littlestr));
79072805 1203 littleend = little + SvCUR(littlestr);
378cc40b 1204 first = *little++;
c277df42 1205 /* The value of pos we can start at: */
79072805 1206 previous = BmPREVIOUS(littlestr);
463ee0b2 1207 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ
1208 /* The value of pos we can stop at: */
1209 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
cf93c79d
IZ
1210 if (previous + start_shift > stop_pos) {
1211 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1212 goto check_tail;
1213 return Nullch;
1214 }
c277df42 1215 while (pos < previous + start_shift) {
3280af22 1216 if (!(pos += PL_screamnext[pos]))
cf93c79d 1217 goto cant_find;
378cc40b 1218 }
de3bb511 1219#ifdef POINTERRIGOR
bbce6d69 1220 do {
ef64f398 1221 if (pos >= stop_pos) break;
bbce6d69
PP
1222 if (big[pos-previous] != first)
1223 continue;
1224 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1225 if (*s++ != *x++) {
1226 s--;
1227 break;
de3bb511 1228 }
bbce6d69 1229 }
c277df42
IZ
1230 if (s == littleend) {
1231 *old_posp = pos;
1232 if (!last) return (char *)(big+pos-previous);
1233 found = 1;
1234 }
6b88bc9c 1235 } while ( pos += PL_screamnext[pos] );
c277df42 1236 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW
1237#else /* !POINTERRIGOR */
1238 big -= previous;
bbce6d69 1239 do {
ef64f398 1240 if (pos >= stop_pos) break;
bbce6d69
PP
1241 if (big[pos] != first)
1242 continue;
1243 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69
PP
1244 if (*s++ != *x++) {
1245 s--;
1246 break;
378cc40b 1247 }
bbce6d69 1248 }
c277df42
IZ
1249 if (s == littleend) {
1250 *old_posp = pos;
1251 if (!last) return (char *)(big+pos);
1252 found = 1;
1253 }
3280af22 1254 } while ( pos += PL_screamnext[pos] );
cf93c79d
IZ
1255 if (last && found)
1256 return (char *)(big+(*old_posp));
de3bb511 1257#endif /* POINTERRIGOR */
cf93c79d
IZ
1258 check_tail:
1259 if (!SvTAIL(littlestr) || (end_shift > 0))
1260 return Nullch;
1261 /* Ignore the trailing "\n". This code is not microoptimized */
1262 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1263 stop_pos = littleend - little; /* Actual littlestr len */
1264 if (stop_pos == 0)
1265 return (char*)big;
1266 big -= stop_pos;
1267 if (*big == first
1268 && ((stop_pos == 1) || memEQ(big + 1, little, stop_pos - 1)))
1269 return (char*)big;
1270 return Nullch;
8d063cd8
LW
1271}
1272
79072805 1273I32
864dbfa3 1274Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
79072805 1275{
bbce6d69
PP
1276 register U8 *a = (U8 *)s1;
1277 register U8 *b = (U8 *)s2;
79072805 1278 while (len--) {
22c35a8c 1279 if (*a != *b && *a != PL_fold[*b])
bbce6d69
PP
1280 return 1;
1281 a++,b++;
1282 }
1283 return 0;
1284}
1285
1286I32
864dbfa3 1287Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
bbce6d69
PP
1288{
1289 register U8 *a = (U8 *)s1;
1290 register U8 *b = (U8 *)s2;
1291 while (len--) {
22c35a8c 1292 if (*a != *b && *a != PL_fold_locale[*b])
bbce6d69
PP
1293 return 1;
1294 a++,b++;
79072805
LW
1295 }
1296 return 0;
1297}
1298
8d063cd8
LW
1299/* copy a string to a safe spot */
1300
1301char *
864dbfa3 1302Perl_savepv(pTHX_ const char *sv)
8d063cd8 1303{
a687059c 1304 register char *newaddr;
8d063cd8 1305
79072805
LW
1306 New(902,newaddr,strlen(sv)+1,char);
1307 (void)strcpy(newaddr,sv);
8d063cd8
LW
1308 return newaddr;
1309}
1310
a687059c
LW
1311/* same thing but with a known length */
1312
1313char *
864dbfa3 1314Perl_savepvn(pTHX_ const char *sv, register I32 len)
a687059c
LW
1315{
1316 register char *newaddr;
1317
1318 New(903,newaddr,len+1,char);
79072805 1319 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW
1320 newaddr[len] = '\0'; /* is now */
1321 return newaddr;
1322}
1323
cea2e8a9 1324/* the SV for Perl_form() and mess() is not kept in an arena */
fc36a67e 1325
76e3520e 1326STATIC SV *
cea2e8a9 1327S_mess_alloc(pTHX)
fc36a67e 1328{
e72dc28c 1329 dTHR;
fc36a67e
PP
1330 SV *sv;
1331 XPVMG *any;
1332
e72dc28c
GS
1333 if (!PL_dirty)
1334 return sv_2mortal(newSVpvn("",0));
1335
0372dbb6
GS
1336 if (PL_mess_sv)
1337 return PL_mess_sv;
1338
fc36a67e
PP
1339 /* Create as PVMG now, to avoid any upgrading later */
1340 New(905, sv, 1, SV);
1341 Newz(905, any, 1, XPVMG);
1342 SvFLAGS(sv) = SVt_PVMG;
1343 SvANY(sv) = (void*)any;
1344 SvREFCNT(sv) = 1 << 30; /* practically infinite */
e72dc28c 1345 PL_mess_sv = sv;
fc36a67e
PP
1346 return sv;
1347}
1348
c5be433b 1349#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS
1350char *
1351Perl_form_nocontext(const char* pat, ...)
1352{
1353 dTHX;
c5be433b 1354 char *retval;
cea2e8a9
GS
1355 va_list args;
1356 va_start(args, pat);
c5be433b 1357 retval = vform(pat, &args);
cea2e8a9 1358 va_end(args);
c5be433b 1359 return retval;
cea2e8a9 1360}
c5be433b 1361#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9 1362
8990e307 1363char *
864dbfa3 1364Perl_form(pTHX_ const char* pat, ...)
8990e307 1365{
c5be433b 1366 char *retval;
46fc3d4c 1367 va_list args;
46fc3d4c 1368 va_start(args, pat);
c5be433b 1369 retval = vform(pat, &args);
46fc3d4c 1370 va_end(args);
c5be433b
GS
1371 return retval;
1372}
1373
1374char *
1375Perl_vform(pTHX_ const char *pat, va_list *args)
1376{
1377 SV *sv = mess_alloc();
1378 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
e72dc28c 1379 return SvPVX(sv);
46fc3d4c 1380}
a687059c 1381
06bf62c7 1382SV *
864dbfa3 1383Perl_mess(pTHX_ const char *pat, va_list *args)
46fc3d4c 1384{
e72dc28c 1385 SV *sv = mess_alloc();
46fc3d4c
PP
1386 static char dgd[] = " during global destruction.\n";
1387
fc36a67e 1388 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1389 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
e858de61 1390 dTHR;
cf2093f6 1391#ifdef IV_IS_QUAD
b9c39e73 1392 if (PL_curcop->cop_line)
cf2093f6
JH
1393 Perl_sv_catpvf(aTHX_ sv, " at %_ line %" PERL_PRId64,
1394 GvSV(PL_curcop->cop_filegv), (IV)PL_curcop->cop_line);
1395#else
b9c39e73 1396 if (PL_curcop->cop_line)
cea2e8a9 1397 Perl_sv_catpvf(aTHX_ sv, " at %_ line %ld",
515f54a1 1398 GvSV(PL_curcop->cop_filegv), (long)PL_curcop->cop_line);
cf2093f6 1399#endif
515f54a1
GS
1400 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1401 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1402 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
cf2093f6
JH
1403#ifdef IV_IS_QUAD
1404 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %" PERL_PRId64,
1405 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1406 line_mode ? "line" : "chunk",
1407 (IV)IoLINES(GvIOp(PL_last_in_gv)));
1408#else
cea2e8a9 1409 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %ld",
515f54a1
GS
1410 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1411 line_mode ? "line" : "chunk",
1412 (long)IoLINES(GvIOp(PL_last_in_gv)));
cf2093f6 1413#endif
a687059c 1414 }
9efbc0eb 1415#ifdef USE_THREADS
e8e6f333
GS
1416 if (thr->tid)
1417 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
9efbc0eb 1418#endif
515f54a1 1419 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1420 }
06bf62c7 1421 return sv;
a687059c
LW
1422}
1423
c5be433b
GS
1424OP *
1425Perl_vdie(pTHX_ const char* pat, va_list *args)
36477c24 1426{
5dc0d613 1427 dTHR;
36477c24 1428 char *message;
3280af22 1429 int was_in_eval = PL_in_eval;
36477c24
PP
1430 HV *stash;
1431 GV *gv;
1432 CV *cv;
06bf62c7
GS
1433 SV *msv;
1434 STRLEN msglen;
36477c24 1435
8b73bbec 1436 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
199100c8 1437 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1438 thr, PL_curstack, PL_mainstack));
36477c24 1439
06bf62c7 1440 if (pat) {
cea2e8a9 1441 msv = mess(pat, args);
06bf62c7
GS
1442 message = SvPV(msv,msglen);
1443 }
1444 else {
1445 message = Nullch;
1446 }
36477c24 1447
8b73bbec 1448 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
199100c8 1449 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1450 thr, message, PL_diehook));
3280af22 1451 if (PL_diehook) {
cea2e8a9 1452 /* sv_2cv might call Perl_croak() */
3280af22 1453 SV *olddiehook = PL_diehook;
1738f5c4 1454 ENTER;
3280af22
NIS
1455 SAVESPTR(PL_diehook);
1456 PL_diehook = Nullsv;
1738f5c4
CS
1457 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1458 LEAVE;
1459 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1460 dSP;
774d564b
PP
1461 SV *msg;
1462
1463 ENTER;
79cb57f6 1464 if (message) {
06bf62c7 1465 msg = newSVpvn(message, msglen);
4e6ea2c3
GS
1466 SvREADONLY_on(msg);
1467 SAVEFREESV(msg);
1468 }
1469 else {
1470 msg = ERRSV;
1471 }
1738f5c4 1472
e788e7d3 1473 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1474 PUSHMARK(SP);
1738f5c4
CS
1475 XPUSHs(msg);
1476 PUTBACK;
a7c6d244
NIS
1477 /* HACK - REVISIT - avoid CATCH_SET(TRUE) in call_sv()
1478 or we come back here due to a JMPENV_JMP() and do
1479 a POPSTACK - but die_where() will have already done
1480 one as it unwound - NI-S 1999/08/14 */
1481 call_sv((SV*)cv, G_DISCARD|G_NOCATCH);
d3acc0f7 1482 POPSTACK;
774d564b 1483 LEAVE;
1738f5c4 1484 }
36477c24
PP
1485 }
1486
06bf62c7 1487 PL_restartop = die_where(message, msglen);
8b73bbec 1488 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
7c06b590 1489 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1490 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1491 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1492 JMPENV_JUMP(3);
3280af22 1493 return PL_restartop;
36477c24
PP
1494}
1495
c5be433b 1496#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS
1497OP *
1498Perl_die_nocontext(const char* pat, ...)
a687059c 1499{
cea2e8a9
GS
1500 dTHX;
1501 OP *o;
a687059c 1502 va_list args;
cea2e8a9 1503 va_start(args, pat);
c5be433b 1504 o = vdie(pat, &args);
cea2e8a9
GS
1505 va_end(args);
1506 return o;
1507}
c5be433b 1508#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9
GS
1509
1510OP *
1511Perl_die(pTHX_ const char* pat, ...)
1512{
1513 OP *o;
1514 va_list args;
1515 va_start(args, pat);
c5be433b 1516 o = vdie(pat, &args);
cea2e8a9
GS
1517 va_end(args);
1518 return o;
1519}
1520
c5be433b
GS
1521void
1522Perl_vcroak(pTHX_ const char* pat, va_list *args)
cea2e8a9
GS
1523{
1524 dTHR;
de3bb511 1525 char *message;
748a9306
LW
1526 HV *stash;
1527 GV *gv;
1528 CV *cv;
06bf62c7
GS
1529 SV *msv;
1530 STRLEN msglen;
a687059c 1531
cea2e8a9 1532 msv = mess(pat, args);
06bf62c7 1533 message = SvPV(msv,msglen);
8b73bbec 1534 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
3280af22 1535 if (PL_diehook) {
cea2e8a9 1536 /* sv_2cv might call Perl_croak() */
3280af22 1537 SV *olddiehook = PL_diehook;
1738f5c4 1538 ENTER;
3280af22
NIS
1539 SAVESPTR(PL_diehook);
1540 PL_diehook = Nullsv;
20cec16a 1541 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS
1542 LEAVE;
1543 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1544 dSP;
774d564b
PP
1545 SV *msg;
1546
1547 ENTER;
06bf62c7 1548 msg = newSVpvn(message, msglen);
774d564b
PP
1549 SvREADONLY_on(msg);
1550 SAVEFREESV(msg);
20cec16a 1551
e788e7d3 1552 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1553 PUSHMARK(SP);
1738f5c4 1554 XPUSHs(msg);
20cec16a 1555 PUTBACK;
864dbfa3 1556 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1557 POPSTACK;
774d564b 1558 LEAVE;
20cec16a 1559 }
748a9306 1560 }
3280af22 1561 if (PL_in_eval) {
06bf62c7 1562 PL_restartop = die_where(message, msglen);
6224f72b 1563 JMPENV_JUMP(3);
a0d0e21e 1564 }
d175a3f0
GS
1565 {
1566#ifdef USE_SFIO
1567 /* SFIO can really mess with your errno */
1568 int e = errno;
1569#endif
06bf62c7 1570 PerlIO_write(PerlIO_stderr(), message, msglen);
d175a3f0
GS
1571 (void)PerlIO_flush(PerlIO_stderr());
1572#ifdef USE_SFIO
1573 errno = e;
1574#endif
1575 }
f86702cc 1576 my_failure_exit();
a687059c
LW
1577}
1578
c5be433b 1579#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1580void
cea2e8a9 1581Perl_croak_nocontext(const char *pat, ...)
a687059c 1582{
cea2e8a9 1583 dTHX;
a687059c 1584 va_list args;
cea2e8a9 1585 va_start(args, pat);
c5be433b 1586 vcroak(pat, &args);
cea2e8a9
GS
1587 /* NOTREACHED */
1588 va_end(args);
1589}
1590#endif /* PERL_IMPLICIT_CONTEXT */
1591
1592void
1593Perl_croak(pTHX_ const char *pat, ...)
1594{
1595 va_list args;
1596 va_start(args, pat);
c5be433b 1597 vcroak(pat, &args);
cea2e8a9
GS
1598 /* NOTREACHED */
1599 va_end(args);
1600}
1601
c5be433b
GS
1602void
1603Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1604{
de3bb511 1605 char *message;
748a9306
LW
1606 HV *stash;
1607 GV *gv;
1608 CV *cv;
06bf62c7
GS
1609 SV *msv;
1610 STRLEN msglen;
a687059c 1611
cea2e8a9 1612 msv = mess(pat, args);
06bf62c7 1613 message = SvPV(msv, msglen);
a687059c 1614
3280af22 1615 if (PL_warnhook) {
cea2e8a9 1616 /* sv_2cv might call Perl_warn() */
11343788 1617 dTHR;
3280af22 1618 SV *oldwarnhook = PL_warnhook;
1738f5c4 1619 ENTER;
3280af22
NIS
1620 SAVESPTR(PL_warnhook);
1621 PL_warnhook = Nullsv;
20cec16a 1622 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS
1623 LEAVE;
1624 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1625 dSP;
774d564b
PP
1626 SV *msg;
1627
1628 ENTER;
06bf62c7 1629 msg = newSVpvn(message, msglen);
774d564b
PP
1630 SvREADONLY_on(msg);
1631 SAVEFREESV(msg);
1632
e788e7d3 1633 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1634 PUSHMARK(SP);
774d564b 1635 XPUSHs(msg);
20cec16a 1636 PUTBACK;
864dbfa3 1637 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1638 POPSTACK;
774d564b 1639 LEAVE;
20cec16a
PP
1640 return;
1641 }
748a9306 1642 }
06bf62c7 1643 PerlIO_write(PerlIO_stderr(), message, msglen);
a687059c 1644#ifdef LEAKTEST
8c52afec
IZ
1645 DEBUG_L(*message == '!'
1646 ? (xstat(message[1]=='!'
1647 ? (message[2]=='!' ? 2 : 1)
1648 : 0)
1649 , 0)
1650 : 0);
a687059c 1651#endif
20cec16a 1652 (void)PerlIO_flush(PerlIO_stderr());
a687059c 1653}
8d063cd8 1654
c5be433b 1655#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS
1656void
1657Perl_warn_nocontext(const char *pat, ...)
1658{
1659 dTHX;
1660 va_list args;
1661 va_start(args, pat);
c5be433b 1662 vwarn(pat, &args);
cea2e8a9
GS
1663 va_end(args);
1664}
1665#endif /* PERL_IMPLICIT_CONTEXT */
1666
1667void
1668Perl_warn(pTHX_ const char *pat, ...)
1669{
1670 va_list args;
1671 va_start(args, pat);
c5be433b 1672 vwarn(pat, &args);
cea2e8a9
GS
1673 va_end(args);
1674}
1675
c5be433b
GS
1676#if defined(PERL_IMPLICIT_CONTEXT)
1677void
1678Perl_warner_nocontext(U32 err, const char *pat, ...)
1679{
1680 dTHX;
1681 va_list args;
1682 va_start(args, pat);
1683 vwarner(err, pat, &args);
1684 va_end(args);
1685}
1686#endif /* PERL_IMPLICIT_CONTEXT */
1687
599cee73 1688void
864dbfa3 1689Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM
1690{
1691 va_list args;
c5be433b
GS
1692 va_start(args, pat);
1693 vwarner(err, pat, &args);
1694 va_end(args);
1695}
1696
1697void
1698Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1699{
1700 dTHR;
599cee73
PM
1701 char *message;
1702 HV *stash;
1703 GV *gv;
1704 CV *cv;
06bf62c7
GS
1705 SV *msv;
1706 STRLEN msglen;
599cee73 1707
c5be433b 1708 msv = mess(pat, args);
06bf62c7 1709 message = SvPV(msv, msglen);
599cee73
PM
1710
1711 if (ckDEAD(err)) {
1712#ifdef USE_THREADS
d008e5eb 1713 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "croak: 0x%lx %s", (unsigned long) thr, message));
599cee73
PM
1714#endif /* USE_THREADS */
1715 if (PL_diehook) {
cea2e8a9 1716 /* sv_2cv might call Perl_croak() */
599cee73
PM
1717 SV *olddiehook = PL_diehook;
1718 ENTER;
1719 SAVESPTR(PL_diehook);
1720 PL_diehook = Nullsv;
1721 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1722 LEAVE;
1723 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1724 dSP;
1725 SV *msg;
1726
1727 ENTER;
06bf62c7 1728 msg = newSVpvn(message, msglen);
599cee73
PM
1729 SvREADONLY_on(msg);
1730 SAVEFREESV(msg);
1731
1732 PUSHMARK(sp);
1733 XPUSHs(msg);
1734 PUTBACK;
864dbfa3 1735 call_sv((SV*)cv, G_DISCARD);
599cee73
PM
1736
1737 LEAVE;
1738 }
1739 }
1740 if (PL_in_eval) {
06bf62c7 1741 PL_restartop = die_where(message, msglen);
599cee73
PM
1742 JMPENV_JUMP(3);
1743 }
06bf62c7 1744 PerlIO_write(PerlIO_stderr(), message, msglen);
599cee73
PM
1745 (void)PerlIO_flush(PerlIO_stderr());
1746 my_failure_exit();
1747
1748 }
1749 else {
1750 if (PL_warnhook) {
cea2e8a9 1751 /* sv_2cv might call Perl_warn() */
599cee73
PM
1752 dTHR;
1753 SV *oldwarnhook = PL_warnhook;
1754 ENTER;
1755 SAVESPTR(PL_warnhook);
1756 PL_warnhook = Nullsv;
1757 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1758 LEAVE;
1759 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1760 dSP;
1761 SV *msg;
1762
1763 ENTER;
06bf62c7 1764 msg = newSVpvn(message, msglen);
599cee73
PM
1765 SvREADONLY_on(msg);
1766 SAVEFREESV(msg);
1767
1768 PUSHMARK(sp);
1769 XPUSHs(msg);
1770 PUTBACK;
864dbfa3 1771 call_sv((SV*)cv, G_DISCARD);
599cee73
PM
1772
1773 LEAVE;
1774 return;
1775 }
1776 }
06bf62c7 1777 PerlIO_write(PerlIO_stderr(), message, msglen);
599cee73
PM
1778#ifdef LEAKTEST
1779 DEBUG_L(xstat());
1780#endif
1781 (void)PerlIO_flush(PerlIO_stderr());
1782 }
1783}
1784
a0d0e21e 1785#ifndef VMS /* VMS' my_setenv() is in VMS.c */
2c2d71f5 1786#if !defined(WIN32) && !defined(CYGWIN)
8d063cd8 1787void
864dbfa3 1788Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1789{
f2517201
GS
1790#ifndef PERL_USE_SAFE_PUTENV
1791 /* most putenv()s leak, so we manipulate environ directly */
79072805 1792 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1793
3280af22 1794 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW
1795 I32 j;
1796 I32 max;
fe14fcc3
LW
1797 char **tmpenv;
1798
de3bb511 1799 /*SUPPRESS 530*/
fe14fcc3 1800 for (max = i; environ[max]; max++) ;
f2517201
GS
1801 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1802 for (j=0; j<max; j++) { /* copy environment */
1803 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1804 strcpy(tmpenv[j], environ[j]);
1805 }
fe14fcc3
LW
1806 tmpenv[max] = Nullch;
1807 environ = tmpenv; /* tell exec where it is now */
1808 }
a687059c 1809 if (!val) {
f2517201 1810 safesysfree(environ[i]);
a687059c
LW
1811 while (environ[i]) {
1812 environ[i] = environ[i+1];
1813 i++;
1814 }
1815 return;
1816 }
8d063cd8 1817 if (!environ[i]) { /* does not exist yet */
f2517201 1818 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW
1819 environ[i+1] = Nullch; /* make sure it's null terminated */
1820 }
fe14fcc3 1821 else
f2517201
GS
1822 safesysfree(environ[i]);
1823 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1824
a687059c 1825 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
f2517201
GS
1826
1827#else /* PERL_USE_SAFE_PUTENV */
1828 char *new_env;
1829
1830 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
f2517201 1831 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
f2517201
GS
1832 (void)putenv(new_env);
1833#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW
1834}
1835
2c2d71f5
JH
1836#else /* WIN32 || CYGWIN */
1837#if defined(CYGWIN)
1cab015a
FE
1838/*
1839 * Save environ of perl.exe, currently Cygwin links in separate environ's
1840 * for each exe/dll. Probably should be a member of impure_ptr.
1841 */
1842static char ***Perl_main_environ;
1843
1844EXTERN_C void
1845Perl_my_setenv_init(char ***penviron)
1846{
1847 Perl_main_environ = penviron;
1848}
1849
1850void
1851my_setenv(char *nam, char *val)
1852{
1853 /* You can not directly manipulate the environ[] array because
1854 * the routines do some additional work that syncs the Cygwin
1855 * environment with the Windows environment.
1856 */
1857 char *oldstr = environ[setenv_getix(nam)];
1858
1859 if (!val) {
1860 if (!oldstr)
1861 return;
1862 unsetenv(nam);
1863 Safefree(oldstr);
1864 return;
1865 }
1866 setenv(nam, val, 1);
1867 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1868 if(oldstr && environ[setenv_getix(nam)] != oldstr)
1869 Safefree(oldstr);
1870}
3e3baf6d 1871#else /* if WIN32 */
68dc0745
PP
1872
1873void
864dbfa3 1874Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 1875{
3e3baf6d
TB
1876
1877#ifdef USE_WIN32_RTL_ENV
1878
68dc0745
PP
1879 register char *envstr;
1880 STRLEN namlen = strlen(nam);
3e3baf6d
TB
1881 STRLEN vallen;
1882 char *oldstr = environ[setenv_getix(nam)];
1883
1884 /* putenv() has totally broken semantics in both the Borland
1885 * and Microsoft CRTLs. They either store the passed pointer in
1886 * the environment without making a copy, or make a copy and don't
1887 * free it. And on top of that, they dont free() old entries that
1888 * are being replaced/deleted. This means the caller must
1889 * free any old entries somehow, or we end up with a memory
1890 * leak every time my_setenv() is called. One might think
1891 * one could directly manipulate environ[], like the UNIX code
1892 * above, but direct changes to environ are not allowed when
1893 * calling putenv(), since the RTLs maintain an internal
1894 * *copy* of environ[]. Bad, bad, *bad* stink.
1895 * GSAR 97-06-07
1896 */
68dc0745 1897
3e3baf6d
TB
1898 if (!val) {
1899 if (!oldstr)
1900 return;
1901 val = "";
1902 vallen = 0;
1903 }
1904 else
1905 vallen = strlen(val);
f2517201 1906 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
68dc0745 1907 (void)sprintf(envstr,"%s=%s",nam,val);
76e3520e 1908 (void)PerlEnv_putenv(envstr);
3e3baf6d 1909 if (oldstr)
f2517201 1910 safesysfree(oldstr);
3e3baf6d 1911#ifdef _MSC_VER
f2517201 1912 safesysfree(envstr); /* MSVCRT leaks without this */
3e3baf6d
TB
1913#endif
1914
1915#else /* !USE_WIN32_RTL_ENV */
1916
ac5c734f
GS
1917 register char *envstr;
1918 STRLEN len = strlen(nam) + 3;
1919 if (!val) {
1920 val = "";
1921 }
1922 len += strlen(val);
1923 New(904, envstr, len, char);
1924 (void)sprintf(envstr,"%s=%s",nam,val);
1925 (void)PerlEnv_putenv(envstr);
1926 Safefree(envstr);
3e3baf6d
TB
1927
1928#endif
1929}
1930
1931#endif /* WIN32 */
1cab015a 1932#endif
3e3baf6d
TB
1933
1934I32
864dbfa3 1935Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB
1936{
1937 register I32 i, len = strlen(nam);
1938
1939 for (i = 0; environ[i]; i++) {
1940 if (
1941#ifdef WIN32
1942 strnicmp(environ[i],nam,len) == 0
1943#else
1944 strnEQ(environ[i],nam,len)
1945#endif
1946 && environ[i][len] == '=')
1947 break; /* strnEQ must come first to avoid */
1948 } /* potential SEGV's */
1949 return i;
68dc0745
PP
1950}
1951
a0d0e21e 1952#endif /* !VMS */
378cc40b 1953
16d20bd9 1954#ifdef UNLINK_ALL_VERSIONS
79072805 1955I32
864dbfa3 1956Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 1957{
79072805 1958 I32 i;
378cc40b 1959
6ad3d225 1960 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW
1961 return i ? 0 : -1;
1962}
1963#endif
1964
85e6fe83 1965#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 1966char *
864dbfa3 1967Perl_my_bcopy(pTHX_ register const char *from,register char *to,register I32 len)
378cc40b
LW
1968{
1969 char *retval = to;
1970
7c0587c8
LW
1971 if (from - to >= 0) {
1972 while (len--)
1973 *to++ = *from++;
1974 }
1975 else {
1976 to += len;
1977 from += len;
1978 while (len--)
faf8582f 1979 *(--to) = *(--from);
7c0587c8 1980 }
378cc40b
LW
1981 return retval;
1982}
ffed7fef 1983#endif
378cc40b 1984
fc36a67e
PP
1985#ifndef HAS_MEMSET
1986void *
864dbfa3 1987Perl_my_memset(pTHX_ register char *loc, register I32 ch, register I32 len)
fc36a67e
PP
1988{
1989 char *retval = loc;
1990
1991 while (len--)
1992 *loc++ = ch;
1993 return retval;
1994}
1995#endif
1996
7c0587c8 1997#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 1998char *
864dbfa3 1999Perl_my_bzero(pTHX_ register char *loc, register I32 len)
378cc40b
LW
2000{
2001 char *retval = loc;
2002
2003 while (len--)
2004 *loc++ = 0;
2005 return retval;
2006}
2007#endif
7c0587c8 2008
36477c24 2009#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2010I32
864dbfa3 2011Perl_my_memcmp(pTHX_ const char *s1, const char *s2, register I32 len)
7c0587c8 2012{
36477c24
PP
2013 register U8 *a = (U8 *)s1;
2014 register U8 *b = (U8 *)s2;
79072805 2015 register I32 tmp;
7c0587c8
LW
2016
2017 while (len--) {
36477c24 2018 if (tmp = *a++ - *b++)
7c0587c8
LW
2019 return tmp;
2020 }
2021 return 0;
2022}
36477c24 2023#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2024
fe14fcc3 2025#ifndef HAS_VPRINTF
a687059c 2026
85e6fe83 2027#ifdef USE_CHAR_VSPRINTF
a687059c
LW
2028char *
2029#else
2030int
2031#endif
08105a92 2032vsprintf(char *dest, const char *pat, char *args)
a687059c
LW
2033{
2034 FILE fakebuf;
2035
2036 fakebuf._ptr = dest;
2037 fakebuf._cnt = 32767;
35c8bce7
LW
2038#ifndef _IOSTRG
2039#define _IOSTRG 0
2040#endif
a687059c
LW
2041 fakebuf._flag = _IOWRT|_IOSTRG;
2042 _doprnt(pat, args, &fakebuf); /* what a kludge */
2043 (void)putc('\0', &fakebuf);
85e6fe83 2044#ifdef USE_CHAR_VSPRINTF
a687059c
LW
2045 return(dest);
2046#else
2047 return 0; /* perl doesn't use return value */
2048#endif
2049}
2050
fe14fcc3 2051#endif /* HAS_VPRINTF */
a687059c
LW
2052
2053#ifdef MYSWAP
ffed7fef 2054#if BYTEORDER != 0x4321
a687059c 2055short
864dbfa3 2056Perl_my_swap(pTHX_ short s)
a687059c
LW
2057{
2058#if (BYTEORDER & 1) == 0
2059 short result;
2060
2061 result = ((s & 255) << 8) + ((s >> 8) & 255);
2062 return result;
2063#else
2064 return s;
2065#endif
2066}
2067
2068long
864dbfa3 2069Perl_my_htonl(pTHX_ long l)
a687059c
LW
2070{
2071 union {
2072 long result;
ffed7fef 2073 char c[sizeof(long)];
a687059c
LW
2074 } u;
2075
ffed7fef 2076#if BYTEORDER == 0x1234
a687059c
LW
2077 u.c[0] = (l >> 24) & 255;
2078 u.c[1] = (l >> 16) & 255;
2079 u.c[2] = (l >> 8) & 255;
2080 u.c[3] = l & 255;
2081 return u.result;
2082#else
ffed7fef 2083#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2084 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2085#else
79072805
LW
2086 register I32 o;
2087 register I32 s;
a687059c 2088
ffed7fef
LW
2089 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2090 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW
2091 }
2092 return u.result;
2093#endif
2094#endif
2095}
2096
2097long
864dbfa3 2098Perl_my_ntohl(pTHX_ long l)
a687059c
LW
2099{
2100 union {
2101 long l;
ffed7fef 2102 char c[sizeof(long)];
a687059c
LW
2103 } u;
2104
ffed7fef 2105#if BYTEORDER == 0x1234
a687059c
LW
2106 u.c[0] = (l >> 24) & 255;
2107 u.c[1] = (l >> 16) & 255;
2108 u.c[2] = (l >> 8) & 255;
2109 u.c[3] = l & 255;
2110 return u.l;
2111#else
ffed7fef 2112#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2113 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2114#else
79072805
LW
2115 register I32 o;
2116 register I32 s;
a687059c
LW
2117
2118 u.l = l;
2119 l = 0;
ffed7fef
LW
2120 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2121 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW
2122 }
2123 return l;
2124#endif
2125#endif
2126}
2127
ffed7fef 2128#endif /* BYTEORDER != 0x4321 */
988174c1
LW
2129#endif /* MYSWAP */
2130
2131/*
2132 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2133 * If these functions are defined,
2134 * the BYTEORDER is neither 0x1234 nor 0x4321.
2135 * However, this is not assumed.
2136 * -DWS
2137 */
2138
2139#define HTOV(name,type) \
2140 type \
ba106d47 2141 name (register type n) \
988174c1
LW
2142 { \
2143 union { \
2144 type value; \
2145 char c[sizeof(type)]; \
2146 } u; \
79072805
LW
2147 register I32 i; \
2148 register I32 s; \
988174c1
LW
2149 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2150 u.c[i] = (n >> s) & 0xFF; \
2151 } \
2152 return u.value; \
2153 }
2154
2155#define VTOH(name,type) \
2156 type \
ba106d47 2157 name (register type n) \
988174c1
LW
2158 { \
2159 union { \
2160 type value; \
2161 char c[sizeof(type)]; \
2162 } u; \
79072805
LW
2163 register I32 i; \
2164 register I32 s; \
988174c1
LW
2165 u.value = n; \
2166 n = 0; \
2167 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2168 n += (u.c[i] & 0xFF) << s; \
2169 } \
2170 return n; \
2171 }
2172
2173#if defined(HAS_HTOVS) && !defined(htovs)
2174HTOV(htovs,short)
2175#endif
2176#if defined(HAS_HTOVL) && !defined(htovl)
2177HTOV(htovl,long)
2178#endif
2179#if defined(HAS_VTOHS) && !defined(vtohs)
2180VTOH(vtohs,short)
2181#endif
2182#if defined(HAS_VTOHL) && !defined(vtohl)
2183VTOH(vtohl,long)
2184#endif
a687059c 2185
5f05dabc 2186 /* VMS' my_popen() is in VMS.c, same with OS/2. */
4d2c4e07 2187#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC)
760ac839 2188PerlIO *
864dbfa3 2189Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW
2190{
2191 int p[2];
8ac85365 2192 register I32 This, that;
d8a83dd3 2193 register Pid_t pid;
79072805 2194 SV *sv;
1738f5c4 2195 I32 doexec = strNE(cmd,"-");
e446cec8
IZ
2196 I32 did_pipes = 0;
2197 int pp[2];
a687059c 2198
45bc9206 2199 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ
2200#ifdef OS2
2201 if (doexec) {
2202 return my_syspopen(cmd,mode);
2203 }
2204#endif
8ac85365
NIS
2205 This = (*mode == 'w');
2206 that = !This;
3280af22 2207 if (doexec && PL_tainting) {
bbce6d69
PP
2208 taint_env();
2209 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2210 }
c2267164
IZ
2211 if (PerlProc_pipe(p) < 0)
2212 return Nullfp;
e446cec8
IZ
2213 if (doexec && PerlProc_pipe(pp) >= 0)
2214 did_pipes = 1;
a687059c
LW
2215 while ((pid = (doexec?vfork():fork())) < 0) {
2216 if (errno != EAGAIN) {
6ad3d225 2217 PerlLIO_close(p[This]);
e446cec8
IZ
2218 if (did_pipes) {
2219 PerlLIO_close(pp[0]);
2220 PerlLIO_close(pp[1]);
2221 }
a687059c 2222 if (!doexec)
cea2e8a9 2223 Perl_croak(aTHX_ "Can't fork");
a687059c
LW
2224 return Nullfp;
2225 }
2226 sleep(5);
2227 }
2228 if (pid == 0) {
79072805
LW
2229 GV* tmpgv;
2230
30ac6d9b
GS
2231#undef THIS
2232#undef THAT
a687059c 2233#define THIS that
8ac85365 2234#define THAT This
6ad3d225 2235 PerlLIO_close(p[THAT]);
e446cec8
IZ
2236 if (did_pipes) {
2237 PerlLIO_close(pp[0]);
2238#if defined(HAS_FCNTL) && defined(F_SETFD)
2239 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2240#endif
2241 }
a687059c 2242 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS
2243 PerlLIO_dup2(p[THIS], *mode == 'r');
2244 PerlLIO_close(p[THIS]);
a687059c 2245 }
4435c477 2246#ifndef OS2
a687059c 2247 if (doexec) {
a0d0e21e 2248#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW
2249 int fd;
2250
2251#ifndef NOFILE
2252#define NOFILE 20
2253#endif
6b88bc9c 2254 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ
2255 if (fd != pp[1])
2256 PerlLIO_close(fd);
ae986130 2257#endif
e446cec8 2258 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2259 PerlProc__exit(1);
a687059c 2260 }
4435c477 2261#endif /* defined OS2 */
de3bb511 2262 /*SUPPRESS 560*/
85e6fe83 2263 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
d8a83dd3 2264 sv_setiv(GvSV(tmpgv), getpid());
3280af22
NIS
2265 PL_forkprocess = 0;
2266 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW
2267 return Nullfp;
2268#undef THIS
2269#undef THAT
2270 }
62b28dd9 2271 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2272 PerlLIO_close(p[that]);
e446cec8
IZ
2273 if (did_pipes)
2274 PerlLIO_close(pp[1]);
8ac85365 2275 if (p[that] < p[This]) {
6ad3d225
GS
2276 PerlLIO_dup2(p[This], p[that]);
2277 PerlLIO_close(p[This]);
8ac85365 2278 p[This] = p[that];
62b28dd9 2279 }
3280af22 2280 sv = *av_fetch(PL_fdpid,p[This],TRUE);
a0d0e21e 2281 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2282 SvIVX(sv) = pid;
3280af22 2283 PL_forkprocess = pid;
e446cec8
IZ
2284 if (did_pipes && pid > 0) {
2285 int errkid;
2286 int n = 0, n1;
2287
2288 while (n < sizeof(int)) {
2289 n1 = PerlLIO_read(pp[0],
2290 (void*)(((char*)&errkid)+n),
2291 (sizeof(int)) - n);
2292 if (n1 <= 0)
2293 break;
2294 n += n1;
2295 }
2f96c702
IZ
2296 PerlLIO_close(pp[0]);
2297 did_pipes = 0;
e446cec8
IZ
2298 if (n) { /* Error */
2299 if (n != sizeof(int))
cea2e8a9 2300 Perl_croak(aTHX_ "panic: kid popen errno read");
e446cec8
IZ
2301 errno = errkid; /* Propagate errno from kid */
2302 return Nullfp;
2303 }
2304 }
2305 if (did_pipes)
2306 PerlLIO_close(pp[0]);
8ac85365 2307 return PerlIO_fdopen(p[This], mode);
a687059c 2308}
7c0587c8 2309#else
55497cff 2310#if defined(atarist) || defined(DJGPP)
7c0587c8 2311FILE *popen();
760ac839 2312PerlIO *
864dbfa3 2313Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2314{
760ac839 2315 /* Needs work for PerlIO ! */
55497cff 2316 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
45bc9206 2317 PERL_FLUSHALL_FOR_CHILD;
55497cff 2318 return popen(PerlIO_exportFILE(cmd, 0), mode);
7c0587c8
LW
2319}
2320#endif
2321
2322#endif /* !DOSISH */
a687059c 2323
748a9306 2324#ifdef DUMP_FDS
35ff7856 2325void
864dbfa3 2326Perl_dump_fds(pTHX_ char *s)
ae986130
LW
2327{
2328 int fd;
2329 struct stat tmpstatbuf;
2330
760ac839 2331 PerlIO_printf(PerlIO_stderr(),"%s", s);
ae986130 2332 for (fd = 0; fd < 32; fd++) {
6ad3d225 2333 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
760ac839 2334 PerlIO_printf(PerlIO_stderr()," %d",fd);
ae986130 2335 }
760ac839 2336 PerlIO_printf(PerlIO_stderr(),"\n");
ae986130 2337}
35ff7856 2338#endif /* DUMP_FDS */
ae986130 2339
fe14fcc3 2340#ifndef HAS_DUP2
fec02dd3 2341int
ba106d47 2342dup2(int oldfd, int newfd)
a687059c 2343{
a0d0e21e 2344#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD
2345 if (oldfd == newfd)
2346 return oldfd;
6ad3d225 2347 PerlLIO_close(newfd);
fec02dd3 2348 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2349#else
fc36a67e
PP
2350#define DUP2_MAX_FDS 256
2351 int fdtmp[DUP2_MAX_FDS];
79072805 2352 I32 fdx = 0;
ae986130
LW
2353 int fd;
2354
fe14fcc3 2355 if (oldfd == newfd)
fec02dd3 2356 return oldfd;
6ad3d225 2357 PerlLIO_close(newfd);
fc36a67e 2358 /* good enough for low fd's... */
6ad3d225 2359 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2360 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2361 PerlLIO_close(fd);
fc36a67e
PP
2362 fd = -1;
2363 break;
2364 }
ae986130 2365 fdtmp[fdx++] = fd;
fc36a67e 2366 }
ae986130 2367 while (fdx > 0)
6ad3d225 2368 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2369 return fd;
62b28dd9 2370#endif
a687059c
LW
2371}
2372#endif
2373
ff68c719
PP
2374
2375#ifdef HAS_SIGACTION
2376
2377Sighandler_t
864dbfa3 2378Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719
PP
2379{
2380 struct sigaction act, oact;
2381
2382 act.sa_handler = handler;
2383 sigemptyset(&act.sa_mask);
2384 act.sa_flags = 0;
2385#ifdef SA_RESTART
2386 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2387#endif
85264bed
CS
2388#ifdef SA_NOCLDWAIT
2389 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2390 act.sa_flags |= SA_NOCLDWAIT;
2391#endif
ff68c719 2392 if (sigaction(signo, &act, &oact) == -1)
36477c24 2393 return SIG_ERR;
ff68c719 2394 else
36477c24 2395 return oact.sa_handler;
ff68c719
PP
2396}
2397
2398Sighandler_t
864dbfa3 2399Perl_rsignal_state(pTHX_ int signo)
ff68c719
PP
2400{
2401 struct sigaction oact;
2402
2403 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2404 return SIG_ERR;
2405 else
2406 return oact.sa_handler;
2407}
2408
2409int
864dbfa3 2410Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719
PP
2411{
2412 struct sigaction act;
2413
2414 act.sa_handler = handler;
2415 sigemptyset(&act.sa_mask);
2416 act.sa_flags = 0;
2417#ifdef SA_RESTART
2418 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2419#endif
85264bed
CS
2420#ifdef SA_NOCLDWAIT
2421 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2422 act.sa_flags |= SA_NOCLDWAIT;
2423#endif
ff68c719
PP
2424 return sigaction(signo, &act, save);
2425}
2426
2427int
864dbfa3 2428Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719
PP
2429{
2430 return sigaction(signo, save, (struct sigaction *)NULL);
2431}
2432
2433#else /* !HAS_SIGACTION */
2434
2435Sighandler_t
864dbfa3 2436Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2437{
6ad3d225 2438 return PerlProc_signal(signo, handler);
ff68c719
PP
2439}
2440
2441static int sig_trapped;
2442
2443static
2444Signal_t
4e35701f 2445sig_trap(int signo)
ff68c719
PP
2446{
2447 sig_trapped++;
2448}
2449
2450Sighandler_t
864dbfa3 2451Perl_rsignal_state(pTHX_ int signo)
ff68c719
PP
2452{
2453 Sighandler_t oldsig;
2454
2455 sig_trapped = 0;
6ad3d225
GS
2456 oldsig = PerlProc_signal(signo, sig_trap);
2457 PerlProc_signal(signo, oldsig);
ff68c719 2458 if (sig_trapped)
6ad3d225 2459 PerlProc_kill(getpid(), signo);
ff68c719
PP
2460 return oldsig;
2461}
2462
2463int
864dbfa3 2464Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2465{
6ad3d225 2466 *save = PerlProc_signal(signo, handler);
ff68c719
PP
2467 return (*save == SIG_ERR) ? -1 : 0;
2468}
2469
2470int
864dbfa3 2471Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2472{
6ad3d225 2473 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719
PP
2474}
2475
2476#endif /* !HAS_SIGACTION */
2477
5f05dabc 2478 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
4d2c4e07 2479#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC)
79072805 2480I32
864dbfa3 2481Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2482{
ff68c719 2483 Sigsave_t hstat, istat, qstat;
a687059c 2484 int status;
a0d0e21e 2485 SV **svp;
d8a83dd3
JH
2486 Pid_t pid;
2487 Pid_t pid2;
03136e13
CS
2488 bool close_failed;
2489 int saved_errno;
2490#ifdef VMS
2491 int saved_vaxc_errno;
2492#endif
22fae026
TM
2493#ifdef WIN32
2494 int saved_win32_errno;
2495#endif
a687059c 2496
3280af22 2497 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
d8a83dd3 2498 pid = SvIVX(*svp);
a0d0e21e 2499 SvREFCNT_dec(*svp);
3280af22 2500 *svp = &PL_sv_undef;
ddcf38b7
IZ
2501#ifdef OS2
2502 if (pid == -1) { /* Opened by popen. */
2503 return my_syspclose(ptr);
2504 }
2505#endif
03136e13
CS
2506 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2507 saved_errno = errno;
2508#ifdef VMS
2509 saved_vaxc_errno = vaxc$errno;
2510#endif
22fae026
TM
2511#ifdef WIN32
2512 saved_win32_errno = GetLastError();
2513#endif
03136e13 2514 }
7c0587c8 2515#ifdef UTS
6ad3d225 2516 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2517#endif
ff68c719
PP
2518 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2519 rsignal_save(SIGINT, SIG_IGN, &istat);
2520 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
748a9306 2521 do {
1d3434b8
GS
2522 pid2 = wait4pid(pid, &status, 0);
2523 } while (pid2 == -1 && errno == EINTR);
ff68c719
PP
2524 rsignal_restore(SIGHUP, &hstat);
2525 rsignal_restore(SIGINT, &istat);
2526 rsignal_restore(SIGQUIT, &qstat);
03136e13
CS
2527 if (close_failed) {
2528 SETERRNO(saved_errno, saved_vaxc_errno);
2529 return -1;
2530 }
1d3434b8 2531 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2532}
4633a7c4
LW
2533#endif /* !DOSISH */
2534
2c2d71f5 2535#if !defined(DOSISH) || defined(OS2) || defined(WIN32)
79072805 2536I32
d8a83dd3 2537Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
20188a90 2538{
79072805
LW
2539 SV *sv;
2540 SV** svp;
fc36a67e 2541 char spid[TYPE_CHARS(int)];
20188a90
LW
2542
2543 if (!pid)
2544 return -1;
20188a90
LW
2545 if (pid > 0) {
2546 sprintf(spid, "%d", pid);
3280af22
NIS
2547 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2548 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2549 *statusp = SvIVX(*svp);
3280af22 2550 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2551 return pid;
2552 }
2553 }
2554 else {
79072805 2555 HE *entry;
20188a90 2556
3280af22
NIS
2557 hv_iterinit(PL_pidstatus);
2558 if (entry = hv_iternext(PL_pidstatus)) {
a0d0e21e 2559 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2560 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2561 *statusp = SvIVX(sv);
20188a90 2562 sprintf(spid, "%d", pid);
3280af22 2563 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW
2564 return pid;
2565 }
2566 }
79072805 2567#ifdef HAS_WAITPID
367f3c24
IZ
2568# ifdef HAS_WAITPID_RUNTIME
2569 if (!HAS_WAITPID_RUNTIME)
2570 goto hard_way;
2571# endif
f55ee38a 2572 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ
2573#endif
2574#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2575 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ
2576#endif
2577#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2578 hard_way:
a0d0e21e
LW
2579 {
2580 I32 result;
2581 if (flags)
cea2e8a9 2582 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2583 else {
76e3520e 2584 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW
2585 pidgone(result,*statusp);
2586 if (result < 0)
2587 *statusp = -1;
2588 }
2589 return result;
a687059c
LW
2590 }
2591#endif
a687059c 2592}
2d7a9237 2593#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2594
7c0587c8 2595void
de3bb511 2596/*SUPPRESS 590*/
d8a83dd3 2597Perl_pidgone(pTHX_ Pid_t pid, int status)
a687059c 2598{
79072805 2599 register SV *sv;
fc36a67e 2600 char spid[TYPE_CHARS(int)];
a687059c 2601
20188a90 2602 sprintf(spid, "%d", pid);
3280af22 2603 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2604 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2605 SvIVX(sv) = status;
20188a90 2606 return;
a687059c
LW
2607}
2608
55497cff 2609#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2610int pclose();
ddcf38b7
IZ
2611#ifdef HAS_FORK
2612int /* Cannot prototype with I32
2613 in os2ish.h. */
ba106d47 2614my_syspclose(PerlIO *ptr)
ddcf38b7 2615#else
79072805 2616I32
864dbfa3 2617Perl_my_pclose(pTHX_ PerlIO *ptr)
ddcf38b7 2618#endif
a687059c 2619{
760ac839
LW
2620 /* Needs work for PerlIO ! */
2621 FILE *f = PerlIO_findFILE(ptr);
2622 I32 result = pclose(f);
933fea7f
GS
2623#if defined(DJGPP)
2624 result = (result << 8) & 0xff00;
2625#endif
760ac839
LW
2626 PerlIO_releaseFILE(ptr,f);
2627 return result;
a687059c 2628}
7c0587c8 2629#endif
9f68db38
LW
2630
2631void
864dbfa3 2632Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2633{
79072805 2634 register I32 todo;
08105a92 2635 register const char *frombase = from;
9f68db38
LW
2636
2637 if (len == 1) {
08105a92 2638 register const char c = *from;
9f68db38 2639 while (count-- > 0)
5926133d 2640 *to++ = c;
9f68db38
LW
2641 return;
2642 }
2643 while (count-- > 0) {
2644 for (todo = len; todo > 0; todo--) {
2645 *to++ = *from++;
2646 }
2647 from = frombase;
2648 }
2649}
0f85fab0 2650
463ee0b2 2651U32
65202027 2652Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW
2653{
2654 long along;
2655
27e2fb84 2656#if CASTFLAGS & 2
34de22dd
LW
2657# define BIGDOUBLE 2147483648.0
2658 if (f >= BIGDOUBLE)
2659 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2660#endif
0f85fab0
LW
2661 if (f >= 0.0)
2662 return (unsigned long)f;
2663 along = (long)f;
2664 return (unsigned long)along;
2665}
ed6116ce 2666# undef BIGDOUBLE
5d94fbed 2667
5d94fbed
AD
2668/* Unfortunately, on some systems the cast_uv() function doesn't
2669 work with the system-supplied definition of ULONG_MAX. The
2670 comparison (f >= ULONG_MAX) always comes out true. It must be a
2671 problem with the compiler constant folding.
2672
2673 In any case, this workaround should be fine on any two's complement
2674 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2675 ccflags.
2676 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2677*/
1eb770ff
PP
2678
2679/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2680 of LONG_(MIN/MAX).
2681 -- Kenneth Albanowski <kjahds@kjahds.com>
2682*/
2683
20cec16a
PP
2684#ifndef MY_UV_MAX
2685# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD
2686#endif
2687
ed6116ce 2688I32
65202027 2689Perl_cast_i32(pTHX_ NV f)
ed6116ce 2690{
20cec16a
PP
2691 if (f >= I32_MAX)
2692 return (I32) I32_MAX;
2693 if (f <= I32_MIN)
2694 return (I32) I32_MIN;
ed6116ce
LW
2695 return (I32) f;
2696}
a0d0e21e
LW
2697
2698IV
65202027 2699Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2700{
25da4f38
IZ
2701 if (f >= IV_MAX) {
2702 UV uv;
2703
65202027 2704 if (f >= (NV)UV_MAX)
25da4f38
IZ
2705 return (IV) UV_MAX;
2706 uv = (UV) f;
2707 return (IV)uv;
2708 }
20cec16a
PP
2709 if (f <= IV_MIN)
2710 return (IV) IV_MIN;
a0d0e21e
LW
2711 return (IV) f;
2712}
5d94fbed
AD
2713
2714UV
65202027 2715Perl_cast_uv(pTHX_ NV f)
5d94fbed 2716{
20cec16a
PP
2717 if (f >= MY_UV_MAX)
2718 return (UV) MY_UV_MAX;
25da4f38
IZ
2719 if (f < 0) {
2720 IV iv;
2721
2722 if (f < IV_MIN)
2723 return (UV)IV_MIN;
2724 iv = (IV) f;
2725 return (UV) iv;
2726 }
5d94fbed
AD
2727 return (UV) f;
2728}
2729
fe14fcc3 2730#ifndef HAS_RENAME
79072805 2731I32
864dbfa3 2732Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2733{
93a17b20
LW
2734 char *fa = strrchr(a,'/');
2735 char *fb = strrchr(b,'/');
62b28dd9
LW
2736 struct stat tmpstatbuf1;
2737 struct stat tmpstatbuf2;
46fc3d4c 2738 SV *tmpsv = sv_newmortal();
62b28dd9
LW
2739
2740 if (fa)
2741 fa++;
2742 else
2743 fa = a;
2744 if (fb)
2745 fb++;
2746 else
2747 fb = b;
2748 if (strNE(a,b))
2749 return FALSE;
2750 if (fa == a)
46fc3d4c 2751 sv_setpv(tmpsv, ".");
62b28dd9 2752 else
46fc3d4c 2753 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2754 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW
2755 return FALSE;
2756 if (fb == b)
46fc3d4c 2757 sv_setpv(tmpsv, ".");
62b28dd9 2758 else
46fc3d4c 2759 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2760 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW
2761 return FALSE;
2762 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2763 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2764}
fe14fcc3
LW
2765#endif /* !HAS_RENAME */
2766
9e24b6e2 2767NV
864dbfa3 2768Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
4f19785b
WSI
2769{
2770 register char *s = start;
9e24b6e2
JH
2771 register NV rnv = 0.0;
2772 register UV ruv = 0;
252aa082 2773 register bool seenb = FALSE;
9e24b6e2 2774 register bool overflowed = FALSE;
252aa082
JH
2775
2776 for (; len-- && *s; s++) {
2777 if (!(*s == '0' || *s == '1')) {
2778 if (*s == '_')
9e24b6e2 2779 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 2780 if (seenb == FALSE && *s == 'b' && ruv == 0) {
252aa082
JH
2781 /* Disallow 0bbb0b0bbb... */
2782 seenb = TRUE;
252aa082
JH
2783 continue;
2784 }
2785 else {
2786 dTHR;
627300f0
JH
2787 if (ckWARN(WARN_DIGIT))
2788 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH
2789 "Illegal binary digit '%c' ignored", *s);
2790 break;
2791 }
9e24b6e2
JH
2792 }
2793 if (!overflowed) {
2794 register UV xuv = ruv << 1;
2795
2796 if ((xuv >> 1) != ruv) {
2797 dTHR;
2798 overflowed = TRUE;
2799 rnv = (NV) ruv;
627300f0
JH
2800 if (ckWARN_d(WARN_OVERFLOW))
2801 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH
2802 "Integer overflow in binary number");
2803 } else
2804 ruv = xuv | (*s - '0');
2805 }
2806 if (overflowed) {
2807 rnv *= 2;
2808 /* If an NV has not enough bits in its mantissa to
2809 * represent an UV this summing of small low-order numbers
2810 * is a waste of time (because the NV cannot preserve
2811 * the low-order bits anyway): we could just remember when
2812 * did we overflow and in the end just multiply rnv by the
2cc4c2dc 2813 * right amount. */
9e24b6e2 2814 rnv += (*s - '0');
f248d071 2815 }
4f19785b 2816 }
9e24b6e2
JH
2817 if (!overflowed)
2818 rnv = (NV) ruv;
893fe2c2 2819 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2820#if UVSIZE > 4
893fe2c2
JH
2821 || (!overflowed && ruv > 0xffffffff )
2822#endif
2823 ) {
252aa082 2824 dTHR;
627300f0
JH
2825 if (ckWARN(WARN_PORTABLE))
2826 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2827 "Binary number > 0b11111111111111111111111111111111 non-portable");
4f19785b
WSI
2828 }
2829 *retlen = s - start;
9e24b6e2 2830 return rnv;
4f19785b 2831}
9e24b6e2
JH
2832
2833NV
864dbfa3 2834Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2835{
2836 register char *s = start;
9e24b6e2
JH
2837 register NV rnv = 0.0;
2838 register UV ruv = 0;
2839 register bool overflowed = FALSE;
252aa082
JH
2840
2841 for (; len-- && *s; s++) {
2842 if (!(*s >= '0' && *s <= '7')) {
2843 if (*s == '_')
9e24b6e2 2844 continue; /* Note: does not check for __ and the like. */
252aa082 2845 else {
f84f607d
JH
2846 /* Allow \octal to work the DWIM way (that is, stop scanning
2847 * as soon as non-octal characters are seen, complain only iff
2848 * someone seems to want to use the digits eight and nine). */
252aa082
JH
2849 if (*s == '8' || *s == '9') {
2850 dTHR;
627300f0
JH
2851 if (ckWARN(WARN_DIGIT))
2852 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH
2853 "Illegal octal digit '%c' ignored", *s);
2854 }
2855 break;
2856 }
55497cff 2857 }
9e24b6e2 2858 if (!overflowed) {
893fe2c2 2859 register UV xuv = ruv << 3;
9e24b6e2
JH
2860
2861 if ((xuv >> 3) != ruv) {
2862 dTHR;
2863 overflowed = TRUE;
2864 rnv = (NV) ruv;
627300f0
JH
2865 if (ckWARN_d(WARN_OVERFLOW))
2866 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH
2867 "Integer overflow in octal number");
2868 } else
2869 ruv = xuv | (*s - '0');
2870 }
2871 if (overflowed) {
2872 rnv *= 8.0;
2873 /* If an NV has not enough bits in its mantissa to
2874 * represent an UV this summing of small low-order numbers
2875 * is a waste of time (because the NV cannot preserve
2876 * the low-order bits anyway): we could just remember when
2877 * did we overflow and in the end just multiply rnv by the
2878 * right amount of 8-tuples. */
2879 rnv += (NV)(*s - '0');
2880 }
fe14fcc3 2881 }
9e24b6e2
JH
2882 if (!overflowed)
2883 rnv = (NV) ruv;
893fe2c2 2884 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2885#if UVSIZE > 4
893fe2c2
JH
2886 || (!overflowed && ruv > 0xffffffff )
2887#endif
2888 ) {
d008e5eb 2889 dTHR;
627300f0
JH
2890 if (ckWARN(WARN_PORTABLE))
2891 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2892 "Octal number > 037777777777 non-portable");
d008e5eb 2893 }
fe14fcc3 2894 *retlen = s - start;
9e24b6e2 2895 return rnv;
fe14fcc3
LW
2896}
2897
9e24b6e2 2898NV
864dbfa3 2899Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
fe14fcc3
LW
2900{
2901 register char *s = start;
9e24b6e2
JH
2902 register NV rnv = 0.0;
2903 register UV ruv = 0;
252aa082 2904 register bool seenx = FALSE;
9e24b6e2 2905 register bool overflowed = FALSE;
9e24b6e2 2906 char *hexdigit;
fe14fcc3 2907
9e24b6e2
JH
2908 for (; len-- && *s; s++) {
2909 hexdigit = strchr((char *) PL_hexdigit, *s);
2910 if (!hexdigit) {
2911 if (*s == '_')
2912 continue; /* Note: does not check for __ and the like. */
2cc4c2dc 2913 if (seenx == FALSE && *s == 'x' && ruv == 0) {
252aa082
JH
2914 /* Disallow 0xxx0x0xxx... */
2915 seenx = TRUE;
252aa082
JH
2916 continue;
2917 }
a0ed51b3 2918 else {
d008e5eb 2919 dTHR;
627300f0
JH
2920 if (ckWARN(WARN_DIGIT))
2921 Perl_warner(aTHX_ WARN_DIGIT,
252aa082 2922 "Illegal hexadecimal digit '%c' ignored", *s);
a0ed51b3
LW
2923 break;
2924 }
2925 }
9e24b6e2
JH
2926 if (!overflowed) {
2927 register UV xuv = ruv << 4;
2928
2929 if ((xuv >> 4) != ruv) {
2930 dTHR;
2931 overflowed = TRUE;
2932 rnv = (NV) ruv;
627300f0
JH
2933 if (ckWARN_d(WARN_OVERFLOW))
2934 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2
JH
2935 "Integer overflow in hexadecimal number");
2936 } else
2937 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
2938 }
2939 if (overflowed) {
2940 rnv *= 16.0;
2941 /* If an NV has not enough bits in its mantissa to
2942 * represent an UV this summing of small low-order numbers
2943 * is a waste of time (because the NV cannot preserve
2944 * the low-order bits anyway): we could just remember when
2945 * did we overflow and in the end just multiply rnv by the
2946 * right amount of 16-tuples. */
2947 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
2948 }
6ff81951 2949 }
9e24b6e2
JH
2950 if (!overflowed)
2951 rnv = (NV) ruv;
893fe2c2 2952 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2953#if UVSIZE > 4
893fe2c2
JH
2954 || (!overflowed && ruv > 0xffffffff )
2955#endif
2956 ) {
252aa082 2957 dTHR;
627300f0
JH
2958 if (ckWARN(WARN_PORTABLE))
2959 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082
JH
2960 "Hexadecimal number > 0xffffffff non-portable");
2961 }
fe14fcc3 2962 *retlen = s - start;
9e24b6e2 2963 return rnv;
fe14fcc3 2964}
760ac839 2965
491527d0 2966char*
864dbfa3 2967Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0
GS
2968{
2969 dTHR;
2970 char *xfound = Nullch;
2971 char *xfailed = Nullch;
0f31cffe 2972 char tmpbuf[MAXPATHLEN];
491527d0
GS
2973 register char *s;
2974 I32 len;
2975 int retval;
2976#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
2977# define SEARCH_EXTS ".bat", ".cmd", NULL
2978# define MAX_EXT_LEN 4
2979#endif
2980#ifdef OS2
2981# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
2982# define MAX_EXT_LEN 4
2983#endif
2984#ifdef VMS
2985# define SEARCH_EXTS ".pl", ".com", NULL
2986# define MAX_EXT_LEN 4
2987#endif
2988 /* additional extensions to try in each dir if scriptname not found */
2989#ifdef SEARCH_EXTS
2990 char *exts[] = { SEARCH_EXTS };
2991 char **ext = search_ext ? search_ext : exts;
2992 int extidx = 0, i = 0;
2993 char *curext = Nullch;
2994#else
2995# define MAX_EXT_LEN 0
2996#endif
2997
2998 /*
2999 * If dosearch is true and if scriptname does not contain path
3000 * delimiters, search the PATH for scriptname.
3001 *
3002 * If SEARCH_EXTS is also defined, will look for each
3003 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3004 * while searching the PATH.
3005 *
3006 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3007 * proceeds as follows:
3008 * If DOSISH or VMSISH:
3009 * + look for ./scriptname{,.foo,.bar}
3010 * + search the PATH for scriptname{,.foo,.bar}
3011 *
3012 * If !DOSISH:
3013 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3014 * this will not look in '.' if it's not in the PATH)
3015 */
84486fc6 3016 tmpbuf[0] = '\0';
491527d0
GS
3017
3018#ifdef VMS
3019# ifdef ALWAYS_DEFTYPES
3020 len = strlen(scriptname);
3021 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3022 int hasdir, idx = 0, deftypes = 1;
3023 bool seen_dot = 1;
3024
3025 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3026# else
3027 if (dosearch) {
3028 int hasdir, idx = 0, deftypes = 1;
3029 bool seen_dot = 1;
3030
3031 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3032# endif
3033 /* The first time through, just add SEARCH_EXTS to whatever we
3034 * already have, so we can check for default file types. */
3035 while (deftypes ||
84486fc6 3036 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS
3037 {
3038 if (deftypes) {
3039 deftypes = 0;
84486fc6 3040 *tmpbuf = '\0';
491527d0 3041 }
84486fc6
GS
3042 if ((strlen(tmpbuf) + strlen(scriptname)
3043 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 3044 continue; /* don't search dir with too-long name */
84486fc6 3045 strcat(tmpbuf, scriptname);
491527d0
GS
3046#else /* !VMS */
3047
3048#ifdef DOSISH
3049 if (strEQ(scriptname, "-"))
3050 dosearch = 0;
3051 if (dosearch) { /* Look in '.' first. */
3052 char *cur = scriptname;
3053#ifdef SEARCH_EXTS
3054 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3055 while (ext[i])
3056 if (strEQ(ext[i++],curext)) {
3057 extidx = -1; /* already has an ext */
3058 break;
3059 }
3060 do {
3061#endif
3062 DEBUG_p(PerlIO_printf(Perl_debug_log,
3063 "Looking for %s\n",cur));
017f25f1
IZ
3064 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3065 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS
3066 dosearch = 0;
3067 scriptname = cur;
3068#ifdef SEARCH_EXTS
3069 break;
3070#endif
3071 }
3072#ifdef SEARCH_EXTS
3073 if (cur == scriptname) {
3074 len = strlen(scriptname);
84486fc6 3075 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 3076 break;
84486fc6 3077 cur = strcpy(tmpbuf, scriptname);
491527d0
GS
3078 }
3079 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 3080 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS
3081#endif
3082 }
3083#endif
3084
3085 if (dosearch && !strchr(scriptname, '/')
3086#ifdef DOSISH
3087 && !strchr(scriptname, '\\')
3088#endif
3089 && (s = PerlEnv_getenv("PATH"))) {
3090 bool seen_dot = 0;
3091
3280af22
NIS
3092 PL_bufend = s + strlen(s);
3093 while (s < PL_bufend) {
491527d0
GS
3094#if defined(atarist) || defined(DOSISH)
3095 for (len = 0; *s
3096# ifdef atarist
3097 && *s != ','
3098# endif
3099 && *s != ';'; len++, s++) {
84486fc6
GS
3100 if (len < sizeof tmpbuf)
3101 tmpbuf[len] = *s;
491527d0 3102 }
84486fc6
GS
3103 if (len < sizeof tmpbuf)
3104 tmpbuf[len] = '\0';
491527d0 3105#else /* ! (atarist || DOSISH) */
3280af22 3106 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS
3107 ':',
3108 &len);
3109#endif /* ! (atarist || DOSISH) */
3280af22 3110 if (s < PL_bufend)
491527d0 3111 s++;
84486fc6 3112 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0
GS
3113 continue; /* don't search dir with too-long name */
3114 if (len
61ae2fbf 3115#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS
3116 && tmpbuf[len - 1] != '/'
3117 && tmpbuf[len - 1] != '\\'
491527d0
GS
3118#endif
3119 )
84486fc6
GS
3120 tmpbuf[len++] = '/';
3121 if (len == 2 && tmpbuf[0] == '.')
491527d0 3122 seen_dot = 1;
84486fc6 3123 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS
3124#endif /* !VMS */
3125
3126#ifdef SEARCH_EXTS
84486fc6 3127 len = strlen(tmpbuf);
491527d0
GS
3128 if (extidx > 0) /* reset after previous loop */
3129 extidx = 0;
3130 do {
3131#endif
84486fc6 3132 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3133 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ
3134 if (S_ISDIR(PL_statbuf.st_mode)) {
3135 retval = -1;
3136 }
491527d0
GS
3137#ifdef SEARCH_EXTS
3138 } while ( retval < 0 /* not there */
3139 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3140 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS
3141 );
3142#endif
3143 if (retval < 0)
3144 continue;
3280af22
NIS
3145 if (S_ISREG(PL_statbuf.st_mode)
3146 && cando(S_IRUSR,TRUE,&PL_statbuf)
491527d0 3147#ifndef DOSISH
3280af22 3148 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS
3149#endif
3150 )
3151 {
84486fc6 3152 xfound = tmpbuf; /* bingo! */
491527d0
GS
3153 break;
3154 }
3155 if (!xfailed)
84486fc6 3156 xfailed = savepv(tmpbuf);
491527d0
GS
3157 }
3158#ifndef DOSISH
017f25f1
IZ
3159 if (!xfound && !seen_dot && !xfailed &&
3160 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3161 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS
3162#endif
3163 seen_dot = 1; /* Disable message. */
9ccb31f9
GS
3164 if (!xfound) {
3165 if (flags & 1) { /* do or die? */
cea2e8a9 3166 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS
3167 (xfailed ? "execute" : "find"),
3168 (xfailed ? xfailed : scriptname),
3169 (xfailed ? "" : " on PATH"),
3170 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3171 }
3172 scriptname = Nullch;
3173 }
491527d0
GS
3174 if (xfailed)
3175 Safefree(xfailed);
3176 scriptname = xfound;
3177 }
9ccb31f9 3178 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS
3179}
3180
3181
11343788 3182#ifdef USE_THREADS
12ca11f6
MB
3183#ifdef FAKE_THREADS
3184/* Very simplistic scheduler for now */
3185void
3186schedule(void)
3187{
c7848ba1 3188 thr = thr->i.next_run;
12ca11f6
MB
3189}
3190
3191void
864dbfa3 3192Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB
3193{
3194 *cp = 0;
3195}
3196
3197void
864dbfa3 3198Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3199{
51dd5992 3200 perl_os_thread t;
12ca11f6
MB
3201 perl_cond cond = *cp;
3202
3203 if (!cond)
3204 return;
3205 t = cond->thread;
3206 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
3207 t->i.next_run = thr->i.next_run;
3208 thr->i.next_run->i.prev_run = t;
3209 t->i.prev_run = thr;
3210 thr->i.next_run = t;
3211 thr->i.wait_queue = 0;
12ca11f6
MB
3212 /* Remove from the wait queue */
3213 *cp = cond->next;
3214 Safefree(cond);
3215}
3216
3217void
864dbfa3 3218Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3219{
51dd5992 3220 perl_os_thread t;
12ca11f6
MB
3221 perl_cond cond, cond_next;
3222
3223 for (cond = *cp; cond; cond = cond_next) {
3224 t = cond->thread;
3225 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB
3226 t->i.next_run = thr->i.next_run;
3227 thr->i.next_run->i.prev_run = t;
3228 t->i.prev_run = thr;
3229 thr->i.next_run = t;
3230 thr->i.wait_queue = 0;
12ca11f6
MB
3231 /* Remove from the wait queue */
3232 cond_next = cond->next;
3233 Safefree(cond);
3234 }
3235 *cp = 0;
3236}
3237
3238void
864dbfa3 3239Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB
3240{
3241 perl_cond cond;
3242
c7848ba1 3243 if (thr->i.next_run == thr)
cea2e8a9 3244 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
12ca11f6 3245
0f15f207 3246 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB
3247 cond->thread = thr;
3248 cond->next = *cp;
3249 *cp = cond;
c7848ba1 3250 thr->i.wait_queue = cond;
12ca11f6 3251 /* Remove ourselves from runnable queue */
c7848ba1
MB
3252 thr->i.next_run->i.prev_run = thr->i.prev_run;
3253 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB
3254}
3255#endif /* FAKE_THREADS */
3256
0d85d877 3257#ifdef PTHREAD_GETSPECIFIC_INT
52e1cb5e 3258struct perl_thread *
864dbfa3 3259Perl_getTHR(pTHX)
11343788
MB
3260{
3261 pthread_addr_t t;
3262
6b88bc9c 3263 if (pthread_getspecific(PL_thr_key, &t))
cea2e8a9 3264 Perl_croak(aTHX_ "panic: pthread_getspecific");
52e1cb5e 3265 return (struct perl_thread *) t;
11343788 3266}
0d85d877 3267#endif
f93b4edd
MB
3268
3269MAGIC *
864dbfa3 3270Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB
3271{
3272 MAGIC *mg;
3273
3274 SvUPGRADE(sv, SVt_PVMG);
3275 mg = mg_find(sv, 'm');
3276 if (!mg) {
3277 condpair_t *cp;
3278
3279 New(53, cp, 1, condpair_t);
3280 MUTEX_INIT(&cp->mutex);
3281 COND_INIT(&cp->owner_cond);
3282 COND_INIT(&cp->cond);
3283 cp->owner = 0;
28a8573f 3284 MUTEX_LOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB
3285 mg = mg_find(sv, 'm');
3286 if (mg) {
3287 /* someone else beat us to initialising it */
28a8573f 3288 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
f93b4edd
MB
3289 MUTEX_DESTROY(&cp->mutex);
3290 COND_DESTROY(&cp->owner_cond);
3291 COND_DESTROY(&cp->cond);
3292 Safefree(cp);
3293 }
3294 else {
3295 sv_magic(sv, Nullsv, 'm', 0, 0);
3296 mg = SvMAGIC(sv);
3297 mg->mg_ptr = (char *)cp;
565764a8 3298 mg->mg_len = sizeof(cp);
28a8573f 3299 MUTEX_UNLOCK(&PL_cred_mutex); /* XXX need separate mutex? */
8b73bbec 3300 DEBUG_S(WITH_THR(PerlIO_printf(PerlIO_stderr(),
c7848ba1 3301 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB
3302 }
3303 }
3304 return mg;
3305}
a863c7d1
MB
3306
3307/*
199100c8
MB
3308 * Make a new perl thread structure using t as a prototype. Some of the
3309 * fields for the new thread are copied from the prototype thread, t,
3310 * so t should not be running in perl at the time this function is
3311 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3312 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3313 */
52e1cb5e 3314struct perl_thread *
864dbfa3 3315Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3316{
c5be433b 3317#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3318 struct perl_thread *thr;
cea2e8a9 3319#endif
a863c7d1 3320 SV *sv;
199100c8
MB
3321 SV **svp;
3322 I32 i;
3323
79cb57f6 3324 sv = newSVpvn("", 0);
52e1cb5e
JH
3325 SvGROW(sv, sizeof(struct perl_thread) + 1);
3326 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3327 thr = (Thread) SvPVX(sv);
949ced2d 3328#ifdef DEBUGGING
52e1cb5e 3329 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS
3330 PL_markstack = 0;
3331 PL_scopestack = 0;
3332 PL_savestack = 0;
3333 PL_retstack = 0;
3334 PL_dirty = 0;
3335 PL_localizing = 0;
949ced2d
GS
3336 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3337#else
3338 Zero(thr, 1, struct perl_thread);
3339#endif
199100c8 3340
0b94c7bb 3341 PL_protect = MEMBER_TO_FPTR(Perl_default_protect);
312caa8e 3342
199100c8 3343 thr->oursv = sv;
cea2e8a9 3344 init_stacks();
a863c7d1 3345
533c011a 3346 PL_curcop = &PL_compiling;
c5be433b 3347 thr->interp = t->interp;
199100c8 3348 thr->cvcache = newHV();
54b9620d 3349 thr->threadsv = newAV();
a863c7d1 3350 thr->specific = newAV();
79cb57f6 3351 thr->errsv = newSVpvn("", 0);
38a03e6e 3352 thr->errhv = newHV();
a863c7d1
MB
3353 thr->flags = THRf_R_JOINABLE;
3354 MUTEX_INIT(&thr->mutex);
199100c8 3355
d55594ae
GS
3356 /* top_env needs to be non-zero. It points to an area
3357 in which longjmp() stuff is stored, as C callstack
3358 info there at least is thread specific this has to
3359 be per-thread. Otherwise a 'die' in a thread gives
3360 that thread the C stack of last thread to do an eval {}!
3361 See comments in scope.h
3362 Initialize top entry (as in perl.c for main thread)
3363 */
533c011a
NIS
3364 PL_start_env.je_prev = NULL;
3365 PL_start_env.je_ret = -1;
3366 PL_start_env.je_mustcatch = TRUE;
3367 PL_top_env = &PL_start_env;
3368
faef0170 3369 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
533c011a
NIS
3370 PL_restartop = 0;
3371
b099ddc0
GS
3372 PL_statname = NEWSV(66,0);
3373 PL_maxscream = -1;
0b94c7bb
GS
3374 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3375 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3376 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3377 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3378 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
b099ddc0
GS
3379 PL_regindent = 0;
3380 PL_reginterp_cnt = 0;
3381 PL_lastscream = Nullsv;
3382 PL_screamfirst = 0;
3383 PL_screamnext = 0;
3384 PL_reg_start_tmp = 0;
3385 PL_reg_start_tmpl = 0;
14ed4b74 3386 PL_reg_poscache = Nullch;
b099ddc0
GS
3387
3388 /* parent thread's data needs to be locked while we make copy */
3389 MUTEX_LOCK(&t->mutex);
3390
312caa8e
CS
3391 PL_protect = t->Tprotect;
3392
b099ddc0
GS
3393 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3394 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3395 PL_curstash = t->Tcurstash; /* always be set to main? */
3396
6b88bc9c 3397 PL_tainted = t->Ttainted;
84fee439
NIS
3398 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3399 PL_nrs = newSVsv(t->Tnrs);
3400 PL_rs = SvREFCNT_inc(PL_nrs);
3401 PL_last_in_gv = Nullgv;
3402 PL_ofslen = t->Tofslen;
3403 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3404 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3405 PL_chopset = t->Tchopset;
3406 PL_formtarget = newSVsv(t->Tformtarget);
3407 PL_bodytarget = newSVsv(t->Tbodytarget);
3408 PL_toptarget = newSVsv(t->Ttoptarget);
533c011a 3409
54b9620d
MB
3410 /* Initialise all per-thread SVs that the template thread used */
3411 svp = AvARRAY(t->threadsv);
93965878 3412 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 3413 if (*svp && *svp != &PL_sv_undef) {
199100c8 3414 SV *sv = newSVsv(*svp);
54b9620d 3415 av_store(thr->threadsv, i, sv);
533c011a 3416 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
8b73bbec 3417 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
54b9620d 3418 "new_struct_thread: copied threadsv %d %p->%p\n",i, t, thr));
199100c8
MB
3419 }
3420 }
940cb80d 3421 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 3422
533c011a
NIS
3423 MUTEX_LOCK(&PL_threads_mutex);
3424 PL_nthreads++;
3425 thr->tid = ++PL_threadnum;
199100c8
MB
3426 thr->next = t->next;
3427 thr->prev = t;
3428 t->next = thr;
3429 thr->next->prev = thr;
533c011a 3430 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 3431
b099ddc0
GS
3432 /* done copying parent's state */
3433 MUTEX_UNLOCK(&t->mutex);
3434
a863c7d1 3435#ifdef HAVE_THREAD_INTERN
4f63d024 3436 Perl_init_thread_intern(thr);
a863c7d1 3437#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB
3438 return thr;
3439}
11343788 3440#endif /* USE_THREADS */
760ac839
LW
3441
3442#ifdef HUGE_VAL
3443/*
3444 * This hack is to force load of "huge" support from libm.a
3445 * So it is in perl for (say) POSIX to use.
3446 * Needed for SunOS with Sun's 'acc' for example.
3447 */
65202027 3448NV
8ac85365 3449Perl_huge(void)
760ac839
LW
3450{
3451 return HUGE_VAL;
3452}
3453#endif
4e35701f 3454
22239a37
NIS
3455#ifdef PERL_GLOBAL_STRUCT
3456struct perl_vars *
864dbfa3 3457Perl_GetVars(pTHX)
22239a37 3458{
533c011a 3459 return &PL_Vars;
22239a37 3460}
31fb1209
NIS
3461#endif
3462
3463char **
864dbfa3 3464Perl_get_op_names(pTHX)
31fb1209 3465{
22c35a8c 3466 return PL_op_name;
31fb1209
NIS
3467}
3468
3469char **
864dbfa3 3470Perl_get_op_descs(pTHX)
31fb1209 3471{
22c35a8c 3472 return PL_op_desc;
31fb1209 3473}
9e6b2b00
GS
3474
3475char *
864dbfa3 3476Perl_get_no_modify(pTHX)
9e6b2b00 3477{
22c35a8c 3478 return (char*)PL_no_modify;
9e6b2b00
GS
3479}
3480
3481U32 *
864dbfa3 3482Perl_get_opargs(pTHX)
9e6b2b00 3483{
22c35a8c 3484 return PL_opargs;
9e6b2b00 3485}
51aa15f3 3486
0cb96387
GS
3487PPADDR_t*
3488Perl_get_ppaddr(pTHX)
3489{
3490 return &PL_ppaddr;
3491}
3492
a6c40364
GS
3493#ifndef HAS_GETENV_LEN
3494char *
864dbfa3 3495Perl_getenv_len(pTHX_ char *env_elem, unsigned long *len)
a6c40364
GS
3496{
3497 char *env_trans = PerlEnv_getenv(env_elem);
3498 if (env_trans)
3499 *len = strlen(env_trans);
3500 return env_trans;
f675dbe5
CB
3501}
3502#endif
3503
dc9e4912
GS
3504
3505MGVTBL*
864dbfa3 3506Perl_get_vtbl(pTHX_ int vtbl_id)
dc9e4912
GS
3507{
3508 MGVTBL* result = Null(MGVTBL*);
3509
3510 switch(vtbl_id) {
3511 case want_vtbl_sv:
3512 result = &PL_vtbl_sv;
3513 break;
3514 case want_vtbl_env:
3515 result = &PL_vtbl_env;
3516 break;
3517 case want_vtbl_envelem:
3518 result = &PL_vtbl_envelem;
3519 break;
3520 case want_vtbl_sig:
3521 result = &PL_vtbl_sig;
3522 break;
3523 case want_vtbl_sigelem:
3524 result = &PL_vtbl_sigelem;
3525 break;
3526 case want_vtbl_pack:
3527 result = &PL_vtbl_pack;
3528 break;
3529 case want_vtbl_packelem:
3530 result = &PL_vtbl_packelem;
3531 break;
3532 case want_vtbl_dbline:
3533 result = &PL_vtbl_dbline;
3534 break;
3535 case want_vtbl_isa:
3536 result = &PL_vtbl_isa;
3537 break;
3538 case want_vtbl_isaelem:
3539 result = &PL_vtbl_isaelem;
3540 break;
3541 case want_vtbl_arylen:
3542 result = &PL_vtbl_arylen;
3543 break;
3544 case want_vtbl_glob:
3545 result = &PL_vtbl_glob;
3546 break;
3547 case want_vtbl_mglob:
3548 result = &PL_vtbl_mglob;
3549 break;
3550 case want_vtbl_nkeys:
3551 result = &PL_vtbl_nkeys;
3552 break;
3553 case want_vtbl_taint:
3554 result = &PL_vtbl_taint;
3555 break;
3556 case want_vtbl_substr:
3557 result = &PL_vtbl_substr;
3558 break;
3559 case want_vtbl_vec:
3560 result = &PL_vtbl_vec;
3561 break;
3562 case want_vtbl_pos:
3563 result = &PL_vtbl_pos;
3564 break;
3565 case want_vtbl_bm:
3566 result = &PL_vtbl_bm;
3567 break;
3568 case want_vtbl_fm:
3569 result = &PL_vtbl_fm;
3570 break;
3571 case want_vtbl_uvar:
3572 result = &PL_vtbl_uvar;
3573 break;
3574#ifdef USE_THREADS
3575 case want_vtbl_mutex:
3576 result = &PL_vtbl_mutex;
3577 break;
3578#endif
3579 case want_vtbl_defelem:
3580 result = &PL_vtbl_defelem;
3581 break;
3582 case want_vtbl_regexp:
3583 result = &PL_vtbl_regexp;
3584 break;
3585 case want_vtbl_regdata:
3586 result = &PL_vtbl_regdata;
3587 break;
3588 case want_vtbl_regdatum:
3589 result = &PL_vtbl_regdatum;
3590 break;
3c90161d 3591#ifdef USE_LOCALE_COLLATE
dc9e4912
GS
3592 case want_vtbl_collxfrm:
3593 result = &PL_vtbl_collxfrm;
3594 break;
3c90161d 3595#endif
dc9e4912
GS
3596 case want_vtbl_amagic:
3597 result = &PL_vtbl_amagic;
3598 break;
3599 case want_vtbl_amagicelem:
3600 result = &PL_vtbl_amagicelem;
3601 break;
810b8aa5
GS
3602 case want_vtbl_backref:
3603 result = &PL_vtbl_backref;
3604 break;
dc9e4912
GS
3605 }
3606 return result;
3607}
3608
767df6a1 3609I32
864dbfa3 3610Perl_my_fflush_all(pTHX)
767df6a1
JH
3611{
3612#ifdef FFLUSH_NULL
ce720889 3613 return PerlIO_flush(NULL);
767df6a1
JH
3614#else
3615 long open_max = -1;
ed39a0f2 3616# if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
d2201af2
AD
3617# ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3618 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3619# else
767df6a1
JH
3620# if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3621 open_max = sysconf(_SC_OPEN_MAX);
3622# else
3623# ifdef FOPEN_MAX
d2201af2 3624 open_max = FOPEN_MAX;
767df6a1
JH
3625# else
3626# ifdef OPEN_MAX
d2201af2 3627 open_max = OPEN_MAX;
767df6a1
JH
3628# else
3629# ifdef _NFILE
d2201af2 3630 open_max = _NFILE;
767df6a1
JH
3631# endif
3632# endif
3633# endif
3634# endif
d2201af2 3635# endif
767df6a1
JH
3636 if (open_max > 0) {
3637 long i;
3638 for (i = 0; i < open_max; i++)
d2201af2
AD
3639 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3640 STDIO_STREAM_ARRAY[i]._file < open_max &&
3641 STDIO_STREAM_ARRAY[i]._flag)
3642 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
767df6a1
JH
3643 return 0;
3644 }
3645# endif
3646 SETERRNO(EBADF,RMS$_IFI);
3647 return EOF;
3648#endif
3649}