3 * Copyright (c) 1991-2000, Larry Wall
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.
11 * "Very useful, no doubt, that was to Saruman; yet it seems that he was
12 * not content." --Gandalf
16 #define PERL_IN_UTIL_C
19 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
24 # define SIG_ERR ((Sighandler_t) -1)
27 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
36 /* Put this after #includes because fork and vfork prototypes may
44 # include <sys/wait.h>
55 long xcount[MAXXCOUNT];
56 long lastxcount[MAXXCOUNT];
57 long xycount[MAXXCOUNT][MAXYCOUNT];
58 long lastxycount[MAXXCOUNT][MAXYCOUNT];
62 #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
63 # define FD_CLOEXEC 1 /* NeXT needs this */
66 /* paranoid version of system's malloc() */
68 /* NOTE: Do not call the next three routines directly. Use the macros
69 * in handy.h, so that we can easily redefine everything to do tracking of
70 * allocated hunks back to the original New to track down any memory leaks.
71 * XXX This advice seems to be widely ignored :-( --AD August 1996.
75 Perl_safesysmalloc(MEM_SIZE size)
81 PerlIO_printf(Perl_error_log,
82 "Allocation too large: %lx\n", size) FLUSH;
85 #endif /* HAS_64K_LIMIT */
88 Perl_croak_nocontext("panic: malloc");
90 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
91 PERL_ALLOC_CHECK(ptr);
92 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
98 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
105 /* paranoid version of system's realloc() */
108 Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
112 #if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) && !defined(PERL_MICRO)
113 Malloc_t PerlMem_realloc();
114 #endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
118 PerlIO_printf(Perl_error_log,
119 "Reallocation too large: %lx\n", size) FLUSH;
122 #endif /* HAS_64K_LIMIT */
129 return safesysmalloc(size);
132 Perl_croak_nocontext("panic: realloc");
134 ptr = PerlMem_realloc(where,size);
135 PERL_ALLOC_CHECK(ptr);
137 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++));
138 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
145 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
152 /* safe version of system's free() */
155 Perl_safesysfree(Malloc_t where)
158 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++));
165 /* safe version of system's calloc() */
168 Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
174 if (size * count > 0xffff) {
175 PerlIO_printf(Perl_error_log,
176 "Allocation too large: %lx\n", size * count) FLUSH;
179 #endif /* HAS_64K_LIMIT */
181 if ((long)size < 0 || (long)count < 0)
182 Perl_croak_nocontext("panic: calloc");
185 ptr = PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
186 PERL_ALLOC_CHECK(ptr);
187 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) calloc %ld x %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)count,(long)size));
189 memset((void*)ptr, 0, size);
195 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
204 struct mem_test_strut {
212 # define ALIGN sizeof(struct mem_test_strut)
214 # define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
215 # define typeof_chunk(ch) \
216 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
217 # define set_typeof_chunk(ch,t) \
218 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
219 #define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
222 ? ((size) - 1)/8 + 5 \
226 Perl_safexmalloc(I32 x, MEM_SIZE size)
228 register char* where = (char*)safemalloc(size + ALIGN);
231 xycount[x][SIZE_TO_Y(size)]++;
232 set_typeof_chunk(where, x);
233 sizeof_chunk(where) = size;
234 return (Malloc_t)(where + ALIGN);
238 Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
240 char *where = (char*)wh;
243 return safexmalloc(0,size);
246 MEM_SIZE old = sizeof_chunk(where - ALIGN);
247 int t = typeof_chunk(where - ALIGN);
248 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
250 xycount[t][SIZE_TO_Y(old)]--;
251 xycount[t][SIZE_TO_Y(size)]++;
252 xcount[t] += size - old;
253 sizeof_chunk(new) = size;
254 return (Malloc_t)(new + ALIGN);
259 Perl_safexfree(Malloc_t wh)
262 char *where = (char*)wh;
268 size = sizeof_chunk(where);
269 x = where[0] + 100 * where[1];
271 xycount[x][SIZE_TO_Y(size)]--;
276 Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
278 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
280 xycount[x][SIZE_TO_Y(size)]++;
281 memset((void*)(where + ALIGN), 0, size * count);
282 set_typeof_chunk(where, x);
283 sizeof_chunk(where) = size;
284 return (Malloc_t)(where + ALIGN);
288 S_xstat(pTHX_ int flag)
290 register I32 i, j, total = 0;
291 I32 subtot[MAXYCOUNT];
293 for (j = 0; j < MAXYCOUNT; j++) {
297 PerlIO_printf(Perl_debug_log, " Id subtot 4 8 12 16 20 24 28 32 36 40 48 56 64 72 80 80+\n", total);
298 for (i = 0; i < MAXXCOUNT; i++) {
300 for (j = 0; j < MAXYCOUNT; j++) {
301 subtot[j] += xycount[i][j];
304 ? xcount[i] /* Have something */
306 ? xcount[i] != lastxcount[i] /* Changed */
307 : xcount[i] > lastxcount[i])) { /* Growed */
308 PerlIO_printf(Perl_debug_log,"%2d %02d %7ld ", i / 100, i % 100,
309 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
310 lastxcount[i] = xcount[i];
311 for (j = 0; j < MAXYCOUNT; j++) {
313 ? xycount[i][j] /* Have something */
315 ? xycount[i][j] != lastxycount[i][j] /* Changed */
316 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
317 PerlIO_printf(Perl_debug_log,"%3ld ",
319 ? xycount[i][j] - lastxycount[i][j]
321 lastxycount[i][j] = xycount[i][j];
323 PerlIO_printf(Perl_debug_log, " . ", xycount[i][j]);
326 PerlIO_printf(Perl_debug_log, "\n");
330 PerlIO_printf(Perl_debug_log, "Total %7ld ", total);
331 for (j = 0; j < MAXYCOUNT; j++) {
333 PerlIO_printf(Perl_debug_log, "%3ld ", subtot[j]);
335 PerlIO_printf(Perl_debug_log, " . ");
338 PerlIO_printf(Perl_debug_log, "\n");
342 #endif /* LEAKTEST */
344 /* copy a string up to some (non-backslashed) delimiter, if any */
347 Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
350 for (tolen = 0; from < fromend; from++, tolen++) {
352 if (from[1] == delim)
361 else if (*from == delim)
372 /* return ptr to little string in big string, NULL if not found */
373 /* This routine was donated by Corey Satten. */
376 Perl_instr(pTHX_ register const char *big, register const char *little)
378 register const char *s, *x;
389 for (x=big,s=little; *s; /**/ ) {
398 return (char*)(big-1);
403 /* same as instr but allow embedded nulls */
406 Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
408 register const char *s, *x;
409 register I32 first = *little;
410 register const char *littleend = lend;
412 if (!first && little >= littleend)
414 if (bigend - big < littleend - little)
416 bigend -= littleend - little++;
417 while (big <= bigend) {
420 for (x=big,s=little; s < littleend; /**/ ) {
427 return (char*)(big-1);
432 /* reverse of the above--find last substring */
435 Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
437 register const char *bigbeg;
438 register const char *s, *x;
439 register I32 first = *little;
440 register const char *littleend = lend;
442 if (!first && little >= littleend)
443 return (char*)bigend;
445 big = bigend - (littleend - little++);
446 while (big >= bigbeg) {
449 for (x=big+2,s=little; s < littleend; /**/ ) {
456 return (char*)(big+1);
462 * Set up for a new ctype locale.
465 Perl_new_ctype(pTHX_ const char *newctype)
467 #ifdef USE_LOCALE_CTYPE
471 for (i = 0; i < 256; i++) {
473 PL_fold_locale[i] = toLOWER_LC(i);
474 else if (isLOWER_LC(i))
475 PL_fold_locale[i] = toUPPER_LC(i);
477 PL_fold_locale[i] = i;
480 #endif /* USE_LOCALE_CTYPE */
484 * Set up for a new collation locale.
487 Perl_new_collate(pTHX_ const char *newcoll)
489 #ifdef USE_LOCALE_COLLATE
492 if (PL_collation_name) {
494 Safefree(PL_collation_name);
495 PL_collation_name = NULL;
496 PL_collation_standard = TRUE;
497 PL_collxfrm_base = 0;
498 PL_collxfrm_mult = 2;
503 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
505 Safefree(PL_collation_name);
506 PL_collation_name = savepv(newcoll);
507 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
510 /* 2: at most so many chars ('a', 'b'). */
511 /* 50: surely no system expands a char more. */
512 #define XFRMBUFSIZE (2 * 50)
513 char xbuf[XFRMBUFSIZE];
514 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
515 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
516 SSize_t mult = fb - fa;
518 Perl_croak(aTHX_ "strxfrm() gets absurd");
519 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
520 PL_collxfrm_mult = mult;
524 #endif /* USE_LOCALE_COLLATE */
528 Perl_set_numeric_radix(pTHX)
530 #ifdef USE_LOCALE_NUMERIC
531 # ifdef HAS_LOCALECONV
535 if (lc && lc->decimal_point)
536 /* We assume that decimal separator aka the radix
537 * character is always a single character. If it
538 * ever is a string, this needs to be rethunk. */
539 PL_numeric_radix = *lc->decimal_point;
541 PL_numeric_radix = 0;
542 # endif /* HAS_LOCALECONV */
543 #endif /* USE_LOCALE_NUMERIC */
547 * Set up for a new numeric locale.
550 Perl_new_numeric(pTHX_ const char *newnum)
552 #ifdef USE_LOCALE_NUMERIC
555 if (PL_numeric_name) {
556 Safefree(PL_numeric_name);
557 PL_numeric_name = NULL;
558 PL_numeric_standard = TRUE;
559 PL_numeric_local = TRUE;
564 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
565 Safefree(PL_numeric_name);
566 PL_numeric_name = savepv(newnum);
567 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
568 PL_numeric_local = TRUE;
572 #endif /* USE_LOCALE_NUMERIC */
576 Perl_set_numeric_standard(pTHX)
578 #ifdef USE_LOCALE_NUMERIC
580 if (! PL_numeric_standard) {
581 setlocale(LC_NUMERIC, "C");
582 PL_numeric_standard = TRUE;
583 PL_numeric_local = FALSE;
586 #endif /* USE_LOCALE_NUMERIC */
590 Perl_set_numeric_local(pTHX)
592 #ifdef USE_LOCALE_NUMERIC
594 if (! PL_numeric_local) {
595 setlocale(LC_NUMERIC, PL_numeric_name);
596 PL_numeric_standard = FALSE;
597 PL_numeric_local = TRUE;
601 #endif /* USE_LOCALE_NUMERIC */
605 * Initialize locale awareness.
608 Perl_init_i18nl10n(pTHX_ int printwarn)
612 * 1 = set ok or not applicable,
613 * 0 = fallback to C locale,
614 * -1 = fallback to C locale failed
619 #ifdef USE_LOCALE_CTYPE
620 char *curctype = NULL;
621 #endif /* USE_LOCALE_CTYPE */
622 #ifdef USE_LOCALE_COLLATE
623 char *curcoll = NULL;
624 #endif /* USE_LOCALE_COLLATE */
625 #ifdef USE_LOCALE_NUMERIC
627 #endif /* USE_LOCALE_NUMERIC */
629 char *language = PerlEnv_getenv("LANGUAGE");
631 char *lc_all = PerlEnv_getenv("LC_ALL");
632 char *lang = PerlEnv_getenv("LANG");
633 bool setlocale_failure = FALSE;
635 #ifdef LOCALE_ENVIRON_REQUIRED
638 * Ultrix setlocale(..., "") fails if there are no environment
639 * variables from which to get a locale name.
646 if (setlocale(LC_ALL, ""))
649 setlocale_failure = TRUE;
651 if (!setlocale_failure) {
652 #ifdef USE_LOCALE_CTYPE
655 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
657 setlocale_failure = TRUE;
658 #endif /* USE_LOCALE_CTYPE */
659 #ifdef USE_LOCALE_COLLATE
661 setlocale(LC_COLLATE,
662 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
664 setlocale_failure = TRUE;
665 #endif /* USE_LOCALE_COLLATE */
666 #ifdef USE_LOCALE_NUMERIC
668 setlocale(LC_NUMERIC,
669 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
671 setlocale_failure = TRUE;
672 #endif /* USE_LOCALE_NUMERIC */
677 #endif /* !LOCALE_ENVIRON_REQUIRED */
680 if (! setlocale(LC_ALL, ""))
681 setlocale_failure = TRUE;
684 if (!setlocale_failure) {
685 #ifdef USE_LOCALE_CTYPE
686 if (! (curctype = setlocale(LC_CTYPE, "")))
687 setlocale_failure = TRUE;
688 #endif /* USE_LOCALE_CTYPE */
689 #ifdef USE_LOCALE_COLLATE
690 if (! (curcoll = setlocale(LC_COLLATE, "")))
691 setlocale_failure = TRUE;
692 #endif /* USE_LOCALE_COLLATE */
693 #ifdef USE_LOCALE_NUMERIC
694 if (! (curnum = setlocale(LC_NUMERIC, "")))
695 setlocale_failure = TRUE;
696 #endif /* USE_LOCALE_NUMERIC */
699 if (setlocale_failure) {
701 bool locwarn = (printwarn > 1 ||
703 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)));
708 PerlIO_printf(Perl_error_log,
709 "perl: warning: Setting locale failed.\n");
713 PerlIO_printf(Perl_error_log,
714 "perl: warning: Setting locale failed for the categories:\n\t");
715 #ifdef USE_LOCALE_CTYPE
717 PerlIO_printf(Perl_error_log, "LC_CTYPE ");
718 #endif /* USE_LOCALE_CTYPE */
719 #ifdef USE_LOCALE_COLLATE
721 PerlIO_printf(Perl_error_log, "LC_COLLATE ");
722 #endif /* USE_LOCALE_COLLATE */
723 #ifdef USE_LOCALE_NUMERIC
725 PerlIO_printf(Perl_error_log, "LC_NUMERIC ");
726 #endif /* USE_LOCALE_NUMERIC */
727 PerlIO_printf(Perl_error_log, "\n");
731 PerlIO_printf(Perl_error_log,
732 "perl: warning: Please check that your locale settings:\n");
735 PerlIO_printf(Perl_error_log,
736 "\tLANGUAGE = %c%s%c,\n",
737 language ? '"' : '(',
738 language ? language : "unset",
739 language ? '"' : ')');
742 PerlIO_printf(Perl_error_log,
743 "\tLC_ALL = %c%s%c,\n",
745 lc_all ? lc_all : "unset",
750 for (e = environ; *e; e++) {
751 if (strnEQ(*e, "LC_", 3)
752 && strnNE(*e, "LC_ALL=", 7)
753 && (p = strchr(*e, '=')))
754 PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n",
755 (int)(p - *e), *e, p + 1);
759 PerlIO_printf(Perl_error_log,
762 lang ? lang : "unset",
765 PerlIO_printf(Perl_error_log,
766 " are supported and installed on your system.\n");
771 if (setlocale(LC_ALL, "C")) {
773 PerlIO_printf(Perl_error_log,
774 "perl: warning: Falling back to the standard locale (\"C\").\n");
779 PerlIO_printf(Perl_error_log,
780 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
787 #ifdef USE_LOCALE_CTYPE
788 || !(curctype || setlocale(LC_CTYPE, "C"))
789 #endif /* USE_LOCALE_CTYPE */
790 #ifdef USE_LOCALE_COLLATE
791 || !(curcoll || setlocale(LC_COLLATE, "C"))
792 #endif /* USE_LOCALE_COLLATE */
793 #ifdef USE_LOCALE_NUMERIC
794 || !(curnum || setlocale(LC_NUMERIC, "C"))
795 #endif /* USE_LOCALE_NUMERIC */
799 PerlIO_printf(Perl_error_log,
800 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
804 #endif /* ! LC_ALL */
806 #ifdef USE_LOCALE_CTYPE
807 curctype = setlocale(LC_CTYPE, Nullch);
808 #endif /* USE_LOCALE_CTYPE */
809 #ifdef USE_LOCALE_COLLATE
810 curcoll = setlocale(LC_COLLATE, Nullch);
811 #endif /* USE_LOCALE_COLLATE */
812 #ifdef USE_LOCALE_NUMERIC
813 curnum = setlocale(LC_NUMERIC, Nullch);
814 #endif /* USE_LOCALE_NUMERIC */
817 #ifdef USE_LOCALE_CTYPE
819 #endif /* USE_LOCALE_CTYPE */
821 #ifdef USE_LOCALE_COLLATE
822 new_collate(curcoll);
823 #endif /* USE_LOCALE_COLLATE */
825 #ifdef USE_LOCALE_NUMERIC
827 #endif /* USE_LOCALE_NUMERIC */
829 #endif /* USE_LOCALE */
834 /* Backwards compatibility. */
836 Perl_init_i18nl14n(pTHX_ int printwarn)
838 return init_i18nl10n(printwarn);
841 #ifdef USE_LOCALE_COLLATE
844 * mem_collxfrm() is a bit like strxfrm() but with two important
845 * differences. First, it handles embedded NULs. Second, it allocates
846 * a bit more memory than needed for the transformed data itself.
847 * The real transformed data begins at offset sizeof(collationix).
848 * Please see sv_collxfrm() to see how this is used.
851 Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
854 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
856 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
857 /* the +1 is for the terminating NUL. */
859 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
860 New(171, xbuf, xAlloc, char);
864 *(U32*)xbuf = PL_collation_ix;
865 xout = sizeof(PL_collation_ix);
866 for (xin = 0; xin < len; ) {
870 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
873 if (xused < xAlloc - xout)
875 xAlloc = (2 * xAlloc) + 1;
876 Renew(xbuf, xAlloc, char);
881 xin += strlen(s + xin) + 1;
884 /* Embedded NULs are understood but silently skipped
885 * because they make no sense in locale collation. */
889 *xlen = xout - sizeof(PL_collation_ix);
898 #endif /* USE_LOCALE_COLLATE */
900 #define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
902 /* As a space optimization, we do not compile tables for strings of length
903 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
904 special-cased in fbm_instr().
906 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
909 =for apidoc fbm_compile
911 Analyses the string in order to make fast searches on it using fbm_instr()
912 -- the Boyer-Moore algorithm.
918 Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
927 if (flags & FBMcf_TAIL)
928 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
929 s = (U8*)SvPV_force(sv, len);
930 (void)SvUPGRADE(sv, SVt_PVBM);
931 if (len == 0) /* TAIL might be on on a zero-length string. */
941 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
942 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
943 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
944 memset((void*)table, mlen, 256);
945 table[-1] = (U8)flags;
947 sb = s - mlen + 1; /* first char (maybe) */
949 if (table[*s] == mlen)
954 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
957 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
958 for (i = 0; i < len; i++) {
959 if (PL_freq[s[i]] < frequency) {
961 frequency = PL_freq[s[i]];
964 BmRARE(sv) = s[rarest];
965 BmPREVIOUS(sv) = rarest;
966 BmUSEFUL(sv) = 100; /* Initial value */
967 if (flags & FBMcf_TAIL)
969 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
970 BmRARE(sv),BmPREVIOUS(sv)));
973 /* If SvTAIL(littlestr), it has a fake '\n' at end. */
974 /* If SvTAIL is actually due to \Z or \z, this gives false positives
978 =for apidoc fbm_instr
980 Returns the location of the SV in the string delimited by C<str> and
981 C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
982 does not have to be fbm_compiled, but the search will not be as fast
989 Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
991 register unsigned char *s;
993 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
994 register STRLEN littlelen = l;
995 register I32 multiline = flags & FBMrf_MULTILINE;
997 if (bigend - big < littlelen) {
999 if ( SvTAIL(littlestr)
1000 && (bigend - big == littlelen - 1)
1002 || *big == *little && memEQ(big, little, littlelen - 1)))
1007 if (littlelen <= 2) { /* Special-cased */
1010 if (littlelen == 1) {
1011 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
1012 /* Know that bigend != big. */
1013 if (bigend[-1] == '\n')
1014 return (char *)(bigend - 1);
1015 return (char *) bigend;
1018 while (s < bigend) {
1023 if (SvTAIL(littlestr))
1024 return (char *) bigend;
1028 return (char*)big; /* Cannot be SvTAIL! */
1030 /* littlelen is 2 */
1031 if (SvTAIL(littlestr) && !multiline) {
1032 if (bigend[-1] == '\n' && bigend[-2] == *little)
1033 return (char*)bigend - 2;
1034 if (bigend[-1] == *little)
1035 return (char*)bigend - 1;
1039 /* This should be better than FBM if c1 == c2, and almost
1040 as good otherwise: maybe better since we do less indirection.
1041 And we save a lot of memory by caching no table. */
1042 register unsigned char c1 = little[0];
1043 register unsigned char c2 = little[1];
1048 while (s <= bigend) {
1051 return (char*)s - 1;
1058 goto check_1char_anchor;
1069 goto check_1char_anchor;
1072 while (s <= bigend) {
1075 return (char*)s - 1;
1077 goto check_1char_anchor;
1086 check_1char_anchor: /* One char and anchor! */
1087 if (SvTAIL(littlestr) && (*bigend == *little))
1088 return (char *)bigend; /* bigend is already decremented. */
1091 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
1092 s = bigend - littlelen;
1093 if (s >= big && bigend[-1] == '\n' && *s == *little
1094 /* Automatically of length > 2 */
1095 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1097 return (char*)s; /* how sweet it is */
1100 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1102 return (char*)s + 1; /* how sweet it is */
1106 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1107 char *b = ninstr((char*)big,(char*)bigend,
1108 (char*)little, (char*)little + littlelen);
1110 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1111 /* Chop \n from littlestr: */
1112 s = bigend - littlelen + 1;
1114 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1123 { /* Do actual FBM. */
1124 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1125 register unsigned char *oldlittle;
1127 if (littlelen > bigend - big)
1129 --littlelen; /* Last char found by table lookup */
1131 s = big + littlelen;
1132 little += littlelen; /* last char */
1139 if ((tmp = table[*s])) {
1141 if (bigend - s > tmp) {
1147 if ((s += tmp) < bigend)
1152 else { /* less expensive than calling strncmp() */
1153 register unsigned char *olds = s;
1158 if (*--s == *--little)
1161 s = olds + 1; /* here we pay the price for failure */
1163 if (s < bigend) /* fake up continue to outer loop */
1171 if ( s == bigend && (table[-1] & FBMcf_TAIL)
1172 && memEQ(bigend - littlelen, oldlittle - littlelen, littlelen) )
1173 return (char*)bigend - littlelen;
1178 /* start_shift, end_shift are positive quantities which give offsets
1179 of ends of some substring of bigstr.
1180 If `last' we want the last occurence.
1181 old_posp is the way of communication between consequent calls if
1182 the next call needs to find the .
1183 The initial *old_posp should be -1.
1185 Note that we take into account SvTAIL, so one can get extra
1186 optimizations if _ALL flag is set.
1189 /* If SvTAIL is actually due to \Z or \z, this gives false positives
1190 if PL_multiline. In fact if !PL_multiline the autoritative answer
1191 is not supported yet. */
1194 Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
1197 register unsigned char *s, *x;
1198 register unsigned char *big;
1200 register I32 previous;
1202 register unsigned char *little;
1203 register I32 stop_pos;
1204 register unsigned char *littleend;
1208 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
1209 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1211 if ( BmRARE(littlestr) == '\n'
1212 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1213 little = (unsigned char *)(SvPVX(littlestr));
1214 littleend = little + SvCUR(littlestr);
1221 little = (unsigned char *)(SvPVX(littlestr));
1222 littleend = little + SvCUR(littlestr);
1224 /* The value of pos we can start at: */
1225 previous = BmPREVIOUS(littlestr);
1226 big = (unsigned char *)(SvPVX(bigstr));
1227 /* The value of pos we can stop at: */
1228 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
1229 if (previous + start_shift > stop_pos) {
1230 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1234 while (pos < previous + start_shift) {
1235 if (!(pos += PL_screamnext[pos]))
1240 if (pos >= stop_pos) break;
1241 if (big[pos-previous] != first)
1243 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
1249 if (s == littleend) {
1251 if (!last) return (char *)(big+pos-previous);
1254 } while ( pos += PL_screamnext[pos] );
1255 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
1256 #else /* !POINTERRIGOR */
1259 if (pos >= stop_pos) break;
1260 if (big[pos] != first)
1262 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
1268 if (s == littleend) {
1270 if (!last) return (char *)(big+pos);
1273 } while ( pos += PL_screamnext[pos] );
1275 return (char *)(big+(*old_posp));
1276 #endif /* POINTERRIGOR */
1278 if (!SvTAIL(littlestr) || (end_shift > 0))
1280 /* Ignore the trailing "\n". This code is not microoptimized */
1281 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1282 stop_pos = littleend - little; /* Actual littlestr len */
1287 && ((stop_pos == 1) || memEQ(big + 1, little, stop_pos - 1)))
1293 Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
1295 register U8 *a = (U8 *)s1;
1296 register U8 *b = (U8 *)s2;
1298 if (*a != *b && *a != PL_fold[*b])
1306 Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
1308 register U8 *a = (U8 *)s1;
1309 register U8 *b = (U8 *)s2;
1311 if (*a != *b && *a != PL_fold_locale[*b])
1318 /* copy a string to a safe spot */
1323 Copy a string to a safe spot. This does not use an SV.
1329 Perl_savepv(pTHX_ const char *sv)
1331 register char *newaddr;
1333 New(902,newaddr,strlen(sv)+1,char);
1334 (void)strcpy(newaddr,sv);
1338 /* same thing but with a known length */
1343 Copy a string to a safe spot. The C<len> indicates number of bytes to
1344 copy. This does not use an SV.
1350 Perl_savepvn(pTHX_ const char *sv, register I32 len)
1352 register char *newaddr;
1354 New(903,newaddr,len+1,char);
1355 Copy(sv,newaddr,len,char); /* might not be null terminated */
1356 newaddr[len] = '\0'; /* is now */
1360 /* the SV for Perl_form() and mess() is not kept in an arena */
1370 return sv_2mortal(newSVpvn("",0));
1375 /* Create as PVMG now, to avoid any upgrading later */
1376 New(905, sv, 1, SV);
1377 Newz(905, any, 1, XPVMG);
1378 SvFLAGS(sv) = SVt_PVMG;
1379 SvANY(sv) = (void*)any;
1380 SvREFCNT(sv) = 1 << 30; /* practically infinite */
1385 #if defined(PERL_IMPLICIT_CONTEXT)
1387 Perl_form_nocontext(const char* pat, ...)
1392 va_start(args, pat);
1393 retval = vform(pat, &args);
1397 #endif /* PERL_IMPLICIT_CONTEXT */
1400 Perl_form(pTHX_ const char* pat, ...)
1404 va_start(args, pat);
1405 retval = vform(pat, &args);
1411 Perl_vform(pTHX_ const char *pat, va_list *args)
1413 SV *sv = mess_alloc();
1414 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
1418 #if defined(PERL_IMPLICIT_CONTEXT)
1420 Perl_mess_nocontext(const char *pat, ...)
1425 va_start(args, pat);
1426 retval = vmess(pat, &args);
1430 #endif /* PERL_IMPLICIT_CONTEXT */
1433 Perl_mess(pTHX_ const char *pat, ...)
1437 va_start(args, pat);
1438 retval = vmess(pat, &args);
1444 Perl_vmess(pTHX_ const char *pat, va_list *args)
1446 SV *sv = mess_alloc();
1447 static char dgd[] = " during global destruction.\n";
1449 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
1450 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
1452 if (CopLINE(PL_curcop))
1453 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1454 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
1455 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1456 bool line_mode = (RsSIMPLE(PL_rs) &&
1457 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
1458 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
1459 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
1460 line_mode ? "line" : "chunk",
1461 (IV)IoLINES(GvIOp(PL_last_in_gv)));
1465 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
1467 sv_catpv(sv, PL_dirty ? dgd : ".\n");
1473 Perl_vdie(pTHX_ const char* pat, va_list *args)
1477 int was_in_eval = PL_in_eval;
1484 DEBUG_S(PerlIO_printf(Perl_debug_log,
1485 "%p: die: curstack = %p, mainstack = %p\n",
1486 thr, PL_curstack, PL_mainstack));
1489 msv = vmess(pat, args);
1490 if (PL_errors && SvCUR(PL_errors)) {
1491 sv_catsv(PL_errors, msv);
1492 message = SvPV(PL_errors, msglen);
1493 SvCUR_set(PL_errors, 0);
1496 message = SvPV(msv,msglen);
1503 DEBUG_S(PerlIO_printf(Perl_debug_log,
1504 "%p: die: message = %s\ndiehook = %p\n",
1505 thr, message, PL_diehook));
1507 /* sv_2cv might call Perl_croak() */
1508 SV *olddiehook = PL_diehook;
1510 SAVESPTR(PL_diehook);
1511 PL_diehook = Nullsv;
1512 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1514 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1520 msg = newSVpvn(message, msglen);
1528 PUSHSTACKi(PERLSI_DIEHOOK);
1532 call_sv((SV*)cv, G_DISCARD);
1538 PL_restartop = die_where(message, msglen);
1539 DEBUG_S(PerlIO_printf(Perl_debug_log,
1540 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
1541 thr, PL_restartop, was_in_eval, PL_top_env));
1542 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
1544 return PL_restartop;
1547 #if defined(PERL_IMPLICIT_CONTEXT)
1549 Perl_die_nocontext(const char* pat, ...)
1554 va_start(args, pat);
1555 o = vdie(pat, &args);
1559 #endif /* PERL_IMPLICIT_CONTEXT */
1562 Perl_die(pTHX_ const char* pat, ...)
1566 va_start(args, pat);
1567 o = vdie(pat, &args);
1573 Perl_vcroak(pTHX_ const char* pat, va_list *args)
1583 msv = vmess(pat, args);
1584 if (PL_errors && SvCUR(PL_errors)) {
1585 sv_catsv(PL_errors, msv);
1586 message = SvPV(PL_errors, msglen);
1587 SvCUR_set(PL_errors, 0);
1590 message = SvPV(msv,msglen);
1592 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1593 PTR2UV(thr), message));
1596 /* sv_2cv might call Perl_croak() */
1597 SV *olddiehook = PL_diehook;
1599 SAVESPTR(PL_diehook);
1600 PL_diehook = Nullsv;
1601 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1603 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1608 msg = newSVpvn(message, msglen);
1612 PUSHSTACKi(PERLSI_DIEHOOK);
1616 call_sv((SV*)cv, G_DISCARD);
1622 PL_restartop = die_where(message, msglen);
1627 /* SFIO can really mess with your errno */
1630 PerlIO *serr = Perl_error_log;
1632 PerlIO_write(serr, message, msglen);
1633 (void)PerlIO_flush(serr);
1641 #if defined(PERL_IMPLICIT_CONTEXT)
1643 Perl_croak_nocontext(const char *pat, ...)
1647 va_start(args, pat);
1652 #endif /* PERL_IMPLICIT_CONTEXT */
1657 This is the XSUB-writer's interface to Perl's C<die> function. Use this
1658 function the same way you use the C C<printf> function. See
1665 Perl_croak(pTHX_ const char *pat, ...)
1668 va_start(args, pat);
1675 Perl_vwarn(pTHX_ const char* pat, va_list *args)
1684 msv = vmess(pat, args);
1685 message = SvPV(msv, msglen);
1688 /* sv_2cv might call Perl_warn() */
1690 SV *oldwarnhook = PL_warnhook;
1692 SAVESPTR(PL_warnhook);
1693 PL_warnhook = Nullsv;
1694 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1696 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1701 msg = newSVpvn(message, msglen);
1705 PUSHSTACKi(PERLSI_WARNHOOK);
1709 call_sv((SV*)cv, G_DISCARD);
1716 PerlIO *serr = Perl_error_log;
1718 PerlIO_write(serr, message, msglen);
1720 DEBUG_L(*message == '!'
1721 ? (xstat(message[1]=='!'
1722 ? (message[2]=='!' ? 2 : 1)
1727 (void)PerlIO_flush(serr);
1731 #if defined(PERL_IMPLICIT_CONTEXT)
1733 Perl_warn_nocontext(const char *pat, ...)
1737 va_start(args, pat);
1741 #endif /* PERL_IMPLICIT_CONTEXT */
1746 This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1747 function the same way you use the C C<printf> function. See
1754 Perl_warn(pTHX_ const char *pat, ...)
1757 va_start(args, pat);
1762 #if defined(PERL_IMPLICIT_CONTEXT)
1764 Perl_warner_nocontext(U32 err, const char *pat, ...)
1768 va_start(args, pat);
1769 vwarner(err, pat, &args);
1772 #endif /* PERL_IMPLICIT_CONTEXT */
1775 Perl_warner(pTHX_ U32 err, const char* pat,...)
1778 va_start(args, pat);
1779 vwarner(err, pat, &args);
1784 Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1794 msv = vmess(pat, args);
1795 message = SvPV(msv, msglen);
1799 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
1800 #endif /* USE_THREADS */
1802 /* sv_2cv might call Perl_croak() */
1803 SV *olddiehook = PL_diehook;
1805 SAVESPTR(PL_diehook);
1806 PL_diehook = Nullsv;
1807 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1809 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1814 msg = newSVpvn(message, msglen);
1821 call_sv((SV*)cv, G_DISCARD);
1827 PL_restartop = die_where(message, msglen);
1831 PerlIO *serr = Perl_error_log;
1832 PerlIO_write(serr, message, msglen);
1833 (void)PerlIO_flush(serr);
1840 /* sv_2cv might call Perl_warn() */
1842 SV *oldwarnhook = PL_warnhook;
1844 SAVESPTR(PL_warnhook);
1845 PL_warnhook = Nullsv;
1846 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1848 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1853 msg = newSVpvn(message, msglen);
1860 call_sv((SV*)cv, G_DISCARD);
1867 PerlIO *serr = Perl_error_log;
1868 PerlIO_write(serr, message, msglen);
1872 (void)PerlIO_flush(serr);
1877 #ifndef VMS /* VMS' my_setenv() is in VMS.c */
1878 #if !defined(WIN32) && !defined(__CYGWIN__)
1880 Perl_my_setenv(pTHX_ char *nam, char *val)
1882 #ifndef PERL_USE_SAFE_PUTENV
1883 /* most putenv()s leak, so we manipulate environ directly */
1884 register I32 i=setenv_getix(nam); /* where does it go? */
1886 if (environ == PL_origenviron) { /* need we copy environment? */
1892 for (max = i; environ[max]; max++) ;
1893 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1894 for (j=0; j<max; j++) { /* copy environment */
1895 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
1896 strcpy(tmpenv[j], environ[j]);
1898 tmpenv[max] = Nullch;
1899 environ = tmpenv; /* tell exec where it is now */
1902 safesysfree(environ[i]);
1903 while (environ[i]) {
1904 environ[i] = environ[i+1];
1909 if (!environ[i]) { /* does not exist yet */
1910 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
1911 environ[i+1] = Nullch; /* make sure it's null terminated */
1914 safesysfree(environ[i]);
1915 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
1917 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
1919 #else /* PERL_USE_SAFE_PUTENV */
1922 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
1923 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
1924 (void)putenv(new_env);
1925 #endif /* PERL_USE_SAFE_PUTENV */
1928 #else /* WIN32 || __CYGWIN__ */
1929 #if defined(__CYGWIN__)
1931 * Save environ of perl.exe, currently Cygwin links in separate environ's
1932 * for each exe/dll. Probably should be a member of impure_ptr.
1934 static char ***Perl_main_environ;
1937 Perl_my_setenv_init(char ***penviron)
1939 Perl_main_environ = penviron;
1943 Perl_my_setenv(pTHX_ char *nam, char *val)
1945 /* You can not directly manipulate the environ[] array because
1946 * the routines do some additional work that syncs the Cygwin
1947 * environment with the Windows environment.
1949 char *oldstr = environ[setenv_getix(nam)];
1955 safesysfree(oldstr);
1958 setenv(nam, val, 1);
1959 environ = *Perl_main_environ; /* environ realloc can occur in setenv */
1960 if(oldstr && environ[setenv_getix(nam)] != oldstr)
1961 safesysfree(oldstr);
1963 #else /* if WIN32 */
1966 Perl_my_setenv(pTHX_ char *nam,char *val)
1969 #ifdef USE_WIN32_RTL_ENV
1971 register char *envstr;
1972 STRLEN namlen = strlen(nam);
1974 char *oldstr = environ[setenv_getix(nam)];
1976 /* putenv() has totally broken semantics in both the Borland
1977 * and Microsoft CRTLs. They either store the passed pointer in
1978 * the environment without making a copy, or make a copy and don't
1979 * free it. And on top of that, they dont free() old entries that
1980 * are being replaced/deleted. This means the caller must
1981 * free any old entries somehow, or we end up with a memory
1982 * leak every time my_setenv() is called. One might think
1983 * one could directly manipulate environ[], like the UNIX code
1984 * above, but direct changes to environ are not allowed when
1985 * calling putenv(), since the RTLs maintain an internal
1986 * *copy* of environ[]. Bad, bad, *bad* stink.
1997 vallen = strlen(val);
1998 envstr = (char*)safesysmalloc((namlen + vallen + 3) * sizeof(char));
1999 (void)sprintf(envstr,"%s=%s",nam,val);
2000 (void)PerlEnv_putenv(envstr);
2002 safesysfree(oldstr);
2004 safesysfree(envstr); /* MSVCRT leaks without this */
2007 #else /* !USE_WIN32_RTL_ENV */
2009 register char *envstr;
2010 STRLEN len = strlen(nam) + 3;
2015 New(904, envstr, len, char);
2016 (void)sprintf(envstr,"%s=%s",nam,val);
2017 (void)PerlEnv_putenv(envstr);
2027 Perl_setenv_getix(pTHX_ char *nam)
2029 register I32 i, len = strlen(nam);
2031 for (i = 0; environ[i]; i++) {
2034 strnicmp(environ[i],nam,len) == 0
2036 strnEQ(environ[i],nam,len)
2038 && environ[i][len] == '=')
2039 break; /* strnEQ must come first to avoid */
2040 } /* potential SEGV's */
2046 #ifdef UNLINK_ALL_VERSIONS
2048 Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
2052 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
2057 /* this is a drop-in replacement for bcopy() */
2058 #if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
2060 Perl_my_bcopy(register const char *from,register char *to,register I32 len)
2064 if (from - to >= 0) {
2072 *(--to) = *(--from);
2078 /* this is a drop-in replacement for memset() */
2081 Perl_my_memset(register char *loc, register I32 ch, register I32 len)
2091 /* this is a drop-in replacement for bzero() */
2092 #if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
2094 Perl_my_bzero(register char *loc, register I32 len)
2104 /* this is a drop-in replacement for memcmp() */
2105 #if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
2107 Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
2109 register U8 *a = (U8 *)s1;
2110 register U8 *b = (U8 *)s2;
2114 if (tmp = *a++ - *b++)
2119 #endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
2123 #ifdef USE_CHAR_VSPRINTF
2128 vsprintf(char *dest, const char *pat, char *args)
2132 fakebuf._ptr = dest;
2133 fakebuf._cnt = 32767;
2137 fakebuf._flag = _IOWRT|_IOSTRG;
2138 _doprnt(pat, args, &fakebuf); /* what a kludge */
2139 (void)putc('\0', &fakebuf);
2140 #ifdef USE_CHAR_VSPRINTF
2143 return 0; /* perl doesn't use return value */
2147 #endif /* HAS_VPRINTF */
2150 #if BYTEORDER != 0x4321
2152 Perl_my_swap(pTHX_ short s)
2154 #if (BYTEORDER & 1) == 0
2157 result = ((s & 255) << 8) + ((s >> 8) & 255);
2165 Perl_my_htonl(pTHX_ long l)
2169 char c[sizeof(long)];
2172 #if BYTEORDER == 0x1234
2173 u.c[0] = (l >> 24) & 255;
2174 u.c[1] = (l >> 16) & 255;
2175 u.c[2] = (l >> 8) & 255;
2179 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2180 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2185 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2186 u.c[o & 0xf] = (l >> s) & 255;
2194 Perl_my_ntohl(pTHX_ long l)
2198 char c[sizeof(long)];
2201 #if BYTEORDER == 0x1234
2202 u.c[0] = (l >> 24) & 255;
2203 u.c[1] = (l >> 16) & 255;
2204 u.c[2] = (l >> 8) & 255;
2208 #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
2209 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
2216 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2217 l |= (u.c[o & 0xf] & 255) << s;
2224 #endif /* BYTEORDER != 0x4321 */
2228 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2229 * If these functions are defined,
2230 * the BYTEORDER is neither 0x1234 nor 0x4321.
2231 * However, this is not assumed.
2235 #define HTOV(name,type) \
2237 name (register type n) \
2241 char c[sizeof(type)]; \
2245 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2246 u.c[i] = (n >> s) & 0xFF; \
2251 #define VTOH(name,type) \
2253 name (register type n) \
2257 char c[sizeof(type)]; \
2263 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2264 n += (u.c[i] & 0xFF) << s; \
2269 #if defined(HAS_HTOVS) && !defined(htovs)
2272 #if defined(HAS_HTOVL) && !defined(htovl)
2275 #if defined(HAS_VTOHS) && !defined(vtohs)
2278 #if defined(HAS_VTOHL) && !defined(vtohl)
2282 /* VMS' my_popen() is in VMS.c, same with OS/2. */
2283 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2285 Perl_my_popen(pTHX_ char *cmd, char *mode)
2288 register I32 This, that;
2291 I32 doexec = strNE(cmd,"-");
2295 PERL_FLUSHALL_FOR_CHILD;
2298 return my_syspopen(cmd,mode);
2301 This = (*mode == 'w');
2303 if (doexec && PL_tainting) {
2305 taint_proper("Insecure %s%s", "EXEC");
2307 if (PerlProc_pipe(p) < 0)
2309 if (doexec && PerlProc_pipe(pp) >= 0)
2311 while ((pid = (doexec?vfork():fork())) < 0) {
2312 if (errno != EAGAIN) {
2313 PerlLIO_close(p[This]);
2315 PerlLIO_close(pp[0]);
2316 PerlLIO_close(pp[1]);
2319 Perl_croak(aTHX_ "Can't fork");
2331 PerlLIO_close(p[THAT]);
2333 PerlLIO_close(pp[0]);
2334 #if defined(HAS_FCNTL) && defined(F_SETFD)
2335 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2338 if (p[THIS] != (*mode == 'r')) {
2339 PerlLIO_dup2(p[THIS], *mode == 'r');
2340 PerlLIO_close(p[THIS]);
2344 #if !defined(HAS_FCNTL) || !defined(F_SETFD)
2350 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
2354 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
2357 #endif /* defined OS2 */
2359 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
2360 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
2362 hv_clear(PL_pidstatus); /* we have no children */
2367 do_execfree(); /* free any memory malloced by child on vfork */
2368 PerlLIO_close(p[that]);
2370 PerlLIO_close(pp[1]);
2371 if (p[that] < p[This]) {
2372 PerlLIO_dup2(p[This], p[that]);
2373 PerlLIO_close(p[This]);
2376 sv = *av_fetch(PL_fdpid,p[This],TRUE);
2377 (void)SvUPGRADE(sv,SVt_IV);
2379 PL_forkprocess = pid;
2380 if (did_pipes && pid > 0) {
2384 while (n < sizeof(int)) {
2385 n1 = PerlLIO_read(pp[0],
2386 (void*)(((char*)&errkid)+n),
2392 PerlLIO_close(pp[0]);
2394 if (n) { /* Error */
2395 if (n != sizeof(int))
2396 Perl_croak(aTHX_ "panic: kid popen errno read");
2397 errno = errkid; /* Propagate errno from kid */
2402 PerlLIO_close(pp[0]);
2403 return PerlIO_fdopen(p[This], mode);
2406 #if defined(atarist) || defined(DJGPP)
2409 Perl_my_popen(pTHX_ char *cmd, char *mode)
2411 /* Needs work for PerlIO ! */
2412 /* used 0 for 2nd parameter to PerlIO-exportFILE; apparently not used */
2413 PERL_FLUSHALL_FOR_CHILD;
2414 return popen(PerlIO_exportFILE(cmd, 0), mode);
2418 #endif /* !DOSISH */
2422 Perl_dump_fds(pTHX_ char *s)
2425 struct stat tmpstatbuf;
2427 PerlIO_printf(Perl_debug_log,"%s", s);
2428 for (fd = 0; fd < 32; fd++) {
2429 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
2430 PerlIO_printf(Perl_debug_log," %d",fd);
2432 PerlIO_printf(Perl_debug_log,"\n");
2434 #endif /* DUMP_FDS */
2438 dup2(int oldfd, int newfd)
2440 #if defined(HAS_FCNTL) && defined(F_DUPFD)
2443 PerlLIO_close(newfd);
2444 return fcntl(oldfd, F_DUPFD, newfd);
2446 #define DUP2_MAX_FDS 256
2447 int fdtmp[DUP2_MAX_FDS];
2453 PerlLIO_close(newfd);
2454 /* good enough for low fd's... */
2455 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
2456 if (fdx >= DUP2_MAX_FDS) {
2464 PerlLIO_close(fdtmp[--fdx]);
2471 #ifdef HAS_SIGACTION
2474 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2476 struct sigaction act, oact;
2478 act.sa_handler = handler;
2479 sigemptyset(&act.sa_mask);
2482 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2485 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2486 act.sa_flags |= SA_NOCLDWAIT;
2488 if (sigaction(signo, &act, &oact) == -1)
2491 return oact.sa_handler;
2495 Perl_rsignal_state(pTHX_ int signo)
2497 struct sigaction oact;
2499 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2502 return oact.sa_handler;
2506 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2508 struct sigaction act;
2510 act.sa_handler = handler;
2511 sigemptyset(&act.sa_mask);
2514 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2517 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2518 act.sa_flags |= SA_NOCLDWAIT;
2520 return sigaction(signo, &act, save);
2524 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2526 return sigaction(signo, save, (struct sigaction *)NULL);
2529 #else /* !HAS_SIGACTION */
2532 Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
2534 return PerlProc_signal(signo, handler);
2537 static int sig_trapped;
2547 Perl_rsignal_state(pTHX_ int signo)
2549 Sighandler_t oldsig;
2552 oldsig = PerlProc_signal(signo, sig_trap);
2553 PerlProc_signal(signo, oldsig);
2555 PerlProc_kill(PerlProc_getpid(), signo);
2560 Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
2562 *save = PerlProc_signal(signo, handler);
2563 return (*save == SIG_ERR) ? -1 : 0;
2567 Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
2569 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
2572 #endif /* !HAS_SIGACTION */
2574 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
2575 #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
2577 Perl_my_pclose(pTHX_ PerlIO *ptr)
2579 Sigsave_t hstat, istat, qstat;
2587 int saved_vaxc_errno;
2590 int saved_win32_errno;
2593 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
2596 *svp = &PL_sv_undef;
2598 if (pid == -1) { /* Opened by popen. */
2599 return my_syspclose(ptr);
2602 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2603 saved_errno = errno;
2605 saved_vaxc_errno = vaxc$errno;
2608 saved_win32_errno = GetLastError();
2612 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
2614 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2615 rsignal_save(SIGINT, SIG_IGN, &istat);
2616 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
2618 pid2 = wait4pid(pid, &status, 0);
2619 } while (pid2 == -1 && errno == EINTR);
2620 rsignal_restore(SIGHUP, &hstat);
2621 rsignal_restore(SIGINT, &istat);
2622 rsignal_restore(SIGQUIT, &qstat);
2624 SETERRNO(saved_errno, saved_vaxc_errno);
2627 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
2629 #endif /* !DOSISH */
2631 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
2633 Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
2637 char spid[TYPE_CHARS(int)];
2642 sprintf(spid, "%"IVdf, (IV)pid);
2643 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2644 if (svp && *svp != &PL_sv_undef) {
2645 *statusp = SvIVX(*svp);
2646 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2653 hv_iterinit(PL_pidstatus);
2654 if (entry = hv_iternext(PL_pidstatus)) {
2655 pid = atoi(hv_iterkey(entry,(I32*)statusp));
2656 sv = hv_iterval(PL_pidstatus,entry);
2657 *statusp = SvIVX(sv);
2658 sprintf(spid, "%"IVdf, (IV)pid);
2659 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
2664 # ifdef HAS_WAITPID_RUNTIME
2665 if (!HAS_WAITPID_RUNTIME)
2668 return PerlProc_waitpid(pid,statusp,flags);
2670 #if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
2671 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
2673 #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2678 Perl_croak(aTHX_ "Can't do waitpid with flags");
2680 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
2681 pidgone(result,*statusp);
2689 #endif /* !DOSISH || OS2 || WIN32 */
2693 Perl_pidgone(pTHX_ Pid_t pid, int status)
2696 char spid[TYPE_CHARS(int)];
2698 sprintf(spid, "%"IVdf, (IV)pid);
2699 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
2700 (void)SvUPGRADE(sv,SVt_IV);
2705 #if defined(atarist) || defined(OS2) || defined(DJGPP)
2708 int /* Cannot prototype with I32
2710 my_syspclose(PerlIO *ptr)
2713 Perl_my_pclose(pTHX_ PerlIO *ptr)
2716 /* Needs work for PerlIO ! */
2717 FILE *f = PerlIO_findFILE(ptr);
2718 I32 result = pclose(f);
2720 result = (result << 8) & 0xff00;
2722 PerlIO_releaseFILE(ptr,f);
2728 Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
2731 register const char *frombase = from;
2734 register const char c = *from;
2739 while (count-- > 0) {
2740 for (todo = len; todo > 0; todo--) {
2748 Perl_cast_ulong(pTHX_ NV f)
2753 # define BIGDOUBLE 2147483648.0
2755 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2758 return (unsigned long)f;
2760 return (unsigned long)along;
2764 /* Unfortunately, on some systems the cast_uv() function doesn't
2765 work with the system-supplied definition of ULONG_MAX. The
2766 comparison (f >= ULONG_MAX) always comes out true. It must be a
2767 problem with the compiler constant folding.
2769 In any case, this workaround should be fine on any two's complement
2770 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2772 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2775 /* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2777 -- Kenneth Albanowski <kjahds@kjahds.com>
2781 # define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
2785 Perl_cast_i32(pTHX_ NV f)
2788 return (I32) I32_MAX;
2790 return (I32) I32_MIN;
2795 Perl_cast_iv(pTHX_ NV f)
2800 if (f >= (NV)UV_MAX)
2811 Perl_cast_uv(pTHX_ NV f)
2814 return (UV) MY_UV_MAX;
2828 Perl_same_dirent(pTHX_ char *a, char *b)
2830 char *fa = strrchr(a,'/');
2831 char *fb = strrchr(b,'/');
2832 struct stat tmpstatbuf1;
2833 struct stat tmpstatbuf2;
2834 SV *tmpsv = sv_newmortal();
2847 sv_setpv(tmpsv, ".");
2849 sv_setpvn(tmpsv, a, fa - a);
2850 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
2853 sv_setpv(tmpsv, ".");
2855 sv_setpvn(tmpsv, b, fb - b);
2856 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
2858 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2859 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2861 #endif /* !HAS_RENAME */
2864 Perl_scan_bin(pTHX_ char *start, I32 len, I32 *retlen)
2866 register char *s = start;
2867 register NV rnv = 0.0;
2868 register UV ruv = 0;
2869 register bool seenb = FALSE;
2870 register bool overflowed = FALSE;
2872 for (; len-- && *s; s++) {
2873 if (!(*s == '0' || *s == '1')) {
2875 continue; /* Note: does not check for __ and the like. */
2876 if (seenb == FALSE && *s == 'b' && ruv == 0) {
2877 /* Disallow 0bbb0b0bbb... */
2883 if (ckWARN(WARN_DIGIT))
2884 Perl_warner(aTHX_ WARN_DIGIT,
2885 "Illegal binary digit '%c' ignored", *s);
2890 register UV xuv = ruv << 1;
2892 if ((xuv >> 1) != ruv) {
2896 if (ckWARN_d(WARN_OVERFLOW))
2897 Perl_warner(aTHX_ WARN_OVERFLOW,
2898 "Integer overflow in binary number");
2900 ruv = xuv | (*s - '0');
2904 /* If an NV has not enough bits in its mantissa to
2905 * represent an UV this summing of small low-order numbers
2906 * is a waste of time (because the NV cannot preserve
2907 * the low-order bits anyway): we could just remember when
2908 * did we overflow and in the end just multiply rnv by the
2915 if ( ( overflowed && rnv > 4294967295.0)
2917 || (!overflowed && ruv > 0xffffffff )
2921 if (ckWARN(WARN_PORTABLE))
2922 Perl_warner(aTHX_ WARN_PORTABLE,
2923 "Binary number > 0b11111111111111111111111111111111 non-portable");
2925 *retlen = s - start;
2930 Perl_scan_oct(pTHX_ char *start, I32 len, I32 *retlen)
2932 register char *s = start;
2933 register NV rnv = 0.0;
2934 register UV ruv = 0;
2935 register bool overflowed = FALSE;
2937 for (; len-- && *s; s++) {
2938 if (!(*s >= '0' && *s <= '7')) {
2940 continue; /* Note: does not check for __ and the like. */
2942 /* Allow \octal to work the DWIM way (that is, stop scanning
2943 * as soon as non-octal characters are seen, complain only iff
2944 * someone seems to want to use the digits eight and nine). */
2945 if (*s == '8' || *s == '9') {
2947 if (ckWARN(WARN_DIGIT))
2948 Perl_warner(aTHX_ WARN_DIGIT,
2949 "Illegal octal digit '%c' ignored", *s);
2955 register UV xuv = ruv << 3;
2957 if ((xuv >> 3) != ruv) {
2961 if (ckWARN_d(WARN_OVERFLOW))
2962 Perl_warner(aTHX_ WARN_OVERFLOW,
2963 "Integer overflow in octal number");
2965 ruv = xuv | (*s - '0');
2969 /* If an NV has not enough bits in its mantissa to
2970 * represent an UV this summing of small low-order numbers
2971 * is a waste of time (because the NV cannot preserve
2972 * the low-order bits anyway): we could just remember when
2973 * did we overflow and in the end just multiply rnv by the
2974 * right amount of 8-tuples. */
2975 rnv += (NV)(*s - '0');
2980 if ( ( overflowed && rnv > 4294967295.0)
2982 || (!overflowed && ruv > 0xffffffff )
2986 if (ckWARN(WARN_PORTABLE))
2987 Perl_warner(aTHX_ WARN_PORTABLE,
2988 "Octal number > 037777777777 non-portable");
2990 *retlen = s - start;
2995 Perl_scan_hex(pTHX_ char *start, I32 len, I32 *retlen)
2997 register char *s = start;
2998 register NV rnv = 0.0;
2999 register UV ruv = 0;
3000 register bool seenx = FALSE;
3001 register bool overflowed = FALSE;
3004 for (; len-- && *s; s++) {
3005 hexdigit = strchr((char *) PL_hexdigit, *s);
3008 continue; /* Note: does not check for __ and the like. */
3009 if (seenx == FALSE && *s == 'x' && ruv == 0) {
3010 /* Disallow 0xxx0x0xxx... */
3016 if (ckWARN(WARN_DIGIT))
3017 Perl_warner(aTHX_ WARN_DIGIT,
3018 "Illegal hexadecimal digit '%c' ignored", *s);
3023 register UV xuv = ruv << 4;
3025 if ((xuv >> 4) != ruv) {
3029 if (ckWARN_d(WARN_OVERFLOW))
3030 Perl_warner(aTHX_ WARN_OVERFLOW,
3031 "Integer overflow in hexadecimal number");
3033 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3037 /* If an NV has not enough bits in its mantissa to
3038 * represent an UV this summing of small low-order numbers
3039 * is a waste of time (because the NV cannot preserve
3040 * the low-order bits anyway): we could just remember when
3041 * did we overflow and in the end just multiply rnv by the
3042 * right amount of 16-tuples. */
3043 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3048 if ( ( overflowed && rnv > 4294967295.0)
3050 || (!overflowed && ruv > 0xffffffff )
3054 if (ckWARN(WARN_PORTABLE))
3055 Perl_warner(aTHX_ WARN_PORTABLE,
3056 "Hexadecimal number > 0xffffffff non-portable");
3058 *retlen = s - start;
3063 Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
3066 char *xfound = Nullch;
3067 char *xfailed = Nullch;
3068 char tmpbuf[MAXPATHLEN];
3072 #if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3073 # define SEARCH_EXTS ".bat", ".cmd", NULL
3074 # define MAX_EXT_LEN 4
3077 # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3078 # define MAX_EXT_LEN 4
3081 # define SEARCH_EXTS ".pl", ".com", NULL
3082 # define MAX_EXT_LEN 4
3084 /* additional extensions to try in each dir if scriptname not found */
3086 char *exts[] = { SEARCH_EXTS };
3087 char **ext = search_ext ? search_ext : exts;
3088 int extidx = 0, i = 0;
3089 char *curext = Nullch;
3091 # define MAX_EXT_LEN 0
3095 * If dosearch is true and if scriptname does not contain path
3096 * delimiters, search the PATH for scriptname.
3098 * If SEARCH_EXTS is also defined, will look for each
3099 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3100 * while searching the PATH.
3102 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3103 * proceeds as follows:
3104 * If DOSISH or VMSISH:
3105 * + look for ./scriptname{,.foo,.bar}
3106 * + search the PATH for scriptname{,.foo,.bar}
3109 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3110 * this will not look in '.' if it's not in the PATH)
3115 # ifdef ALWAYS_DEFTYPES
3116 len = strlen(scriptname);
3117 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3118 int hasdir, idx = 0, deftypes = 1;
3121 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3124 int hasdir, idx = 0, deftypes = 1;
3127 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3129 /* The first time through, just add SEARCH_EXTS to whatever we
3130 * already have, so we can check for default file types. */
3132 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
3138 if ((strlen(tmpbuf) + strlen(scriptname)
3139 + MAX_EXT_LEN) >= sizeof tmpbuf)
3140 continue; /* don't search dir with too-long name */
3141 strcat(tmpbuf, scriptname);
3145 if (strEQ(scriptname, "-"))
3147 if (dosearch) { /* Look in '.' first. */
3148 char *cur = scriptname;
3150 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3152 if (strEQ(ext[i++],curext)) {
3153 extidx = -1; /* already has an ext */
3158 DEBUG_p(PerlIO_printf(Perl_debug_log,
3159 "Looking for %s\n",cur));
3160 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3161 && !S_ISDIR(PL_statbuf.st_mode)) {
3169 if (cur == scriptname) {
3170 len = strlen(scriptname);
3171 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
3173 cur = strcpy(tmpbuf, scriptname);
3175 } while (extidx >= 0 && ext[extidx] /* try an extension? */
3176 && strcpy(tmpbuf+len, ext[extidx++]));
3181 #ifdef MACOS_TRADITIONAL
3182 if (dosearch && !strchr(scriptname, ':') &&
3183 (s = PerlEnv_getenv("Commands")))
3185 if (dosearch && !strchr(scriptname, '/')
3187 && !strchr(scriptname, '\\')
3189 && (s = PerlEnv_getenv("PATH")))
3194 PL_bufend = s + strlen(s);
3195 while (s < PL_bufend) {
3196 #ifdef MACOS_TRADITIONAL
3197 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3201 #if defined(atarist) || defined(DOSISH)
3206 && *s != ';'; len++, s++) {
3207 if (len < sizeof tmpbuf)
3210 if (len < sizeof tmpbuf)
3212 #else /* ! (atarist || DOSISH) */
3213 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3216 #endif /* ! (atarist || DOSISH) */
3217 #endif /* MACOS_TRADITIONAL */
3220 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
3221 continue; /* don't search dir with too-long name */
3222 #ifdef MACOS_TRADITIONAL
3223 if (len && tmpbuf[len - 1] != ':')
3224 tmpbuf[len++] = ':';
3227 #if defined(atarist) || defined(__MINT__) || defined(DOSISH)
3228 && tmpbuf[len - 1] != '/'
3229 && tmpbuf[len - 1] != '\\'
3232 tmpbuf[len++] = '/';
3233 if (len == 2 && tmpbuf[0] == '.')
3236 (void)strcpy(tmpbuf + len, scriptname);
3240 len = strlen(tmpbuf);
3241 if (extidx > 0) /* reset after previous loop */
3245 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3246 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
3247 if (S_ISDIR(PL_statbuf.st_mode)) {
3251 } while ( retval < 0 /* not there */
3252 && extidx>=0 && ext[extidx] /* try an extension? */
3253 && strcpy(tmpbuf+len, ext[extidx++])
3258 if (S_ISREG(PL_statbuf.st_mode)
3259 && cando(S_IRUSR,TRUE,&PL_statbuf)
3260 #if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3261 && cando(S_IXUSR,TRUE,&PL_statbuf)
3265 xfound = tmpbuf; /* bingo! */
3269 xfailed = savepv(tmpbuf);
3272 if (!xfound && !seen_dot && !xfailed &&
3273 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
3274 || S_ISDIR(PL_statbuf.st_mode)))
3276 seen_dot = 1; /* Disable message. */
3278 if (flags & 1) { /* do or die? */
3279 Perl_croak(aTHX_ "Can't %s %s%s%s",
3280 (xfailed ? "execute" : "find"),
3281 (xfailed ? xfailed : scriptname),
3282 (xfailed ? "" : " on PATH"),
3283 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3285 scriptname = Nullch;
3289 scriptname = xfound;
3291 return (scriptname ? savepv(scriptname) : Nullch);
3294 #ifndef PERL_GET_CONTEXT_DEFINED
3297 Perl_get_context(void)
3299 #if defined(USE_THREADS) || defined(USE_ITHREADS)
3300 # ifdef OLD_PTHREADS_API
3302 if (pthread_getspecific(PL_thr_key, &t))
3303 Perl_croak_nocontext("panic: pthread_getspecific");
3306 # ifdef I_MACH_CTHREADS
3307 return (void*)cthread_data(cthread_self());
3309 return (void*)pthread_getspecific(PL_thr_key);
3318 Perl_set_context(void *t)
3320 #if defined(USE_THREADS) || defined(USE_ITHREADS)
3321 # ifdef I_MACH_CTHREADS
3322 cthread_set_data(cthread_self(), t);
3324 if (pthread_setspecific(PL_thr_key, t))
3325 Perl_croak_nocontext("panic: pthread_setspecific");
3330 #endif /* !PERL_GET_CONTEXT_DEFINED */
3335 /* Very simplistic scheduler for now */
3339 thr = thr->i.next_run;
3343 Perl_cond_init(pTHX_ perl_cond *cp)
3349 Perl_cond_signal(pTHX_ perl_cond *cp)
3352 perl_cond cond = *cp;
3357 /* Insert t in the runnable queue just ahead of us */
3358 t->i.next_run = thr->i.next_run;
3359 thr->i.next_run->i.prev_run = t;
3360 t->i.prev_run = thr;
3361 thr->i.next_run = t;
3362 thr->i.wait_queue = 0;
3363 /* Remove from the wait queue */
3369 Perl_cond_broadcast(pTHX_ perl_cond *cp)
3372 perl_cond cond, cond_next;
3374 for (cond = *cp; cond; cond = cond_next) {
3376 /* Insert t in the runnable queue just ahead of us */
3377 t->i.next_run = thr->i.next_run;
3378 thr->i.next_run->i.prev_run = t;
3379 t->i.prev_run = thr;
3380 thr->i.next_run = t;
3381 thr->i.wait_queue = 0;
3382 /* Remove from the wait queue */
3383 cond_next = cond->next;
3390 Perl_cond_wait(pTHX_ perl_cond *cp)
3394 if (thr->i.next_run == thr)
3395 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
3397 New(666, cond, 1, struct perl_wait_queue);
3401 thr->i.wait_queue = cond;
3402 /* Remove ourselves from runnable queue */
3403 thr->i.next_run->i.prev_run = thr->i.prev_run;
3404 thr->i.prev_run->i.next_run = thr->i.next_run;
3406 #endif /* FAKE_THREADS */
3409 Perl_condpair_magic(pTHX_ SV *sv)
3413 SvUPGRADE(sv, SVt_PVMG);
3414 mg = mg_find(sv, 'm');
3418 New(53, cp, 1, condpair_t);
3419 MUTEX_INIT(&cp->mutex);
3420 COND_INIT(&cp->owner_cond);
3421 COND_INIT(&cp->cond);
3423 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
3424 mg = mg_find(sv, 'm');
3426 /* someone else beat us to initialising it */
3427 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
3428 MUTEX_DESTROY(&cp->mutex);
3429 COND_DESTROY(&cp->owner_cond);
3430 COND_DESTROY(&cp->cond);
3434 sv_magic(sv, Nullsv, 'm', 0, 0);
3436 mg->mg_ptr = (char *)cp;
3437 mg->mg_len = sizeof(cp);
3438 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
3439 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
3440 "%p: condpair_magic %p\n", thr, sv));)
3447 * Make a new perl thread structure using t as a prototype. Some of the
3448 * fields for the new thread are copied from the prototype thread, t,
3449 * so t should not be running in perl at the time this function is
3450 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3451 * thread calling new_struct_thread) clearly satisfies this constraint.
3453 struct perl_thread *
3454 Perl_new_struct_thread(pTHX_ struct perl_thread *t)
3456 #if !defined(PERL_IMPLICIT_CONTEXT)
3457 struct perl_thread *thr;
3463 sv = newSVpvn("", 0);
3464 SvGROW(sv, sizeof(struct perl_thread) + 1);
3465 SvCUR_set(sv, sizeof(struct perl_thread));
3466 thr = (Thread) SvPVX(sv);
3468 memset(thr, 0xab, sizeof(struct perl_thread));
3475 Zero(&PL_hv_fetch_ent_mh, 1, HE);
3477 Zero(thr, 1, struct perl_thread);
3483 PL_curcop = &PL_compiling;
3484 thr->interp = t->interp;
3485 thr->cvcache = newHV();
3486 thr->threadsv = newAV();
3487 thr->specific = newAV();
3488 thr->errsv = newSVpvn("", 0);
3489 thr->flags = THRf_R_JOINABLE;
3490 MUTEX_INIT(&thr->mutex);
3494 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR) */
3497 PL_statname = NEWSV(66,0);
3498 PL_errors = newSVpvn("", 0);
3500 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3501 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3502 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3503 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3504 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3506 PL_reginterp_cnt = 0;
3507 PL_lastscream = Nullsv;
3510 PL_reg_start_tmp = 0;
3511 PL_reg_start_tmpl = 0;
3512 PL_reg_poscache = Nullch;
3514 /* parent thread's data needs to be locked while we make copy */
3515 MUTEX_LOCK(&t->mutex);
3517 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3518 PL_protect = t->Tprotect;
3521 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3522 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3523 PL_curstash = t->Tcurstash; /* always be set to main? */
3525 PL_tainted = t->Ttainted;
3526 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3527 PL_nrs = newSVsv(t->Tnrs);
3528 PL_rs = SvREFCNT_inc(PL_nrs);
3529 PL_last_in_gv = Nullgv;
3530 PL_ofslen = t->Tofslen;
3531 PL_ofs = savepvn(t->Tofs, PL_ofslen);
3532 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3533 PL_chopset = t->Tchopset;
3534 PL_bodytarget = newSVsv(t->Tbodytarget);
3535 PL_toptarget = newSVsv(t->Ttoptarget);
3536 if (t->Tformtarget == t->Ttoptarget)
3537 PL_formtarget = PL_toptarget;
3539 PL_formtarget = PL_bodytarget;
3541 /* Initialise all per-thread SVs that the template thread used */
3542 svp = AvARRAY(t->threadsv);
3543 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
3544 if (*svp && *svp != &PL_sv_undef) {
3545 SV *sv = newSVsv(*svp);
3546 av_store(thr->threadsv, i, sv);
3547 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
3548 DEBUG_S(PerlIO_printf(Perl_debug_log,
3549 "new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
3553 thr->threadsvp = AvARRAY(thr->threadsv);
3555 MUTEX_LOCK(&PL_threads_mutex);
3557 thr->tid = ++PL_threadnum;
3558 thr->next = t->next;
3561 thr->next->prev = thr;
3562 MUTEX_UNLOCK(&PL_threads_mutex);
3564 /* done copying parent's state */
3565 MUTEX_UNLOCK(&t->mutex);
3567 #ifdef HAVE_THREAD_INTERN
3568 Perl_init_thread_intern(thr);
3569 #endif /* HAVE_THREAD_INTERN */
3572 #endif /* USE_THREADS */
3576 * This hack is to force load of "huge" support from libm.a
3577 * So it is in perl for (say) POSIX to use.
3578 * Needed for SunOS with Sun's 'acc' for example.
3587 #ifdef PERL_GLOBAL_STRUCT
3596 Perl_get_op_names(pTHX)
3602 Perl_get_op_descs(pTHX)
3608 Perl_get_no_modify(pTHX)
3610 return (char*)PL_no_modify;
3614 Perl_get_opargs(pTHX)
3620 Perl_get_ppaddr(pTHX)
3625 #ifndef HAS_GETENV_LEN
3627 Perl_getenv_len(pTHX_ char *env_elem, unsigned long *len)
3629 char *env_trans = PerlEnv_getenv(env_elem);
3631 *len = strlen(env_trans);
3638 Perl_get_vtbl(pTHX_ int vtbl_id)
3640 MGVTBL* result = Null(MGVTBL*);
3644 result = &PL_vtbl_sv;
3647 result = &PL_vtbl_env;
3649 case want_vtbl_envelem:
3650 result = &PL_vtbl_envelem;
3653 result = &PL_vtbl_sig;
3655 case want_vtbl_sigelem:
3656 result = &PL_vtbl_sigelem;
3658 case want_vtbl_pack:
3659 result = &PL_vtbl_pack;
3661 case want_vtbl_packelem:
3662 result = &PL_vtbl_packelem;
3664 case want_vtbl_dbline:
3665 result = &PL_vtbl_dbline;
3668 result = &PL_vtbl_isa;
3670 case want_vtbl_isaelem:
3671 result = &PL_vtbl_isaelem;
3673 case want_vtbl_arylen:
3674 result = &PL_vtbl_arylen;
3676 case want_vtbl_glob:
3677 result = &PL_vtbl_glob;
3679 case want_vtbl_mglob:
3680 result = &PL_vtbl_mglob;
3682 case want_vtbl_nkeys:
3683 result = &PL_vtbl_nkeys;
3685 case want_vtbl_taint:
3686 result = &PL_vtbl_taint;
3688 case want_vtbl_substr:
3689 result = &PL_vtbl_substr;
3692 result = &PL_vtbl_vec;
3695 result = &PL_vtbl_pos;
3698 result = &PL_vtbl_bm;
3701 result = &PL_vtbl_fm;
3703 case want_vtbl_uvar:
3704 result = &PL_vtbl_uvar;
3707 case want_vtbl_mutex:
3708 result = &PL_vtbl_mutex;
3711 case want_vtbl_defelem:
3712 result = &PL_vtbl_defelem;
3714 case want_vtbl_regexp:
3715 result = &PL_vtbl_regexp;
3717 case want_vtbl_regdata:
3718 result = &PL_vtbl_regdata;
3720 case want_vtbl_regdatum:
3721 result = &PL_vtbl_regdatum;
3723 #ifdef USE_LOCALE_COLLATE
3724 case want_vtbl_collxfrm:
3725 result = &PL_vtbl_collxfrm;
3728 case want_vtbl_amagic:
3729 result = &PL_vtbl_amagic;
3731 case want_vtbl_amagicelem:
3732 result = &PL_vtbl_amagicelem;
3734 case want_vtbl_backref:
3735 result = &PL_vtbl_backref;
3742 Perl_my_fflush_all(pTHX)
3745 return PerlIO_flush(NULL);
3748 # if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
3749 # ifdef PERL_FFLUSH_ALL_FOPEN_MAX
3750 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
3752 # if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
3753 open_max = sysconf(_SC_OPEN_MAX);
3756 open_max = FOPEN_MAX;
3759 open_max = OPEN_MAX;
3770 for (i = 0; i < open_max; i++)
3771 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3772 STDIO_STREAM_ARRAY[i]._file < open_max &&
3773 STDIO_STREAM_ARRAY[i]._flag)
3774 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
3778 SETERRNO(EBADF,RMS$_IFI);
3784 Perl_my_atof(pTHX_ const char* s)
3786 #ifdef USE_LOCALE_NUMERIC
3787 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
3791 SET_NUMERIC_STANDARD();
3793 SET_NUMERIC_LOCAL();
3794 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3799 return Perl_atof(s);
3801 return Perl_atof(s);
3806 Perl_report_closed_fh(pTHX_ GV *gv, IO *io, const char *func, const char *obj)
3813 sv = sv_newmortal();
3814 gv_efullname3(sv, gv, Nullch);
3817 Perl_warner(aTHX_ WARN_CLOSED, "%s() on closed %s %s", func, obj, name);
3819 if (io && IoDIRP(io))
3820 Perl_warner(aTHX_ WARN_CLOSED,
3821 "(Are you trying to call %s() on dirhandle %s?)\n",