Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* util.c |
a687059c | 2 | * |
4c79ee7a | 3 | * Copyright (c) 1991-2003, Larry Wall |
a687059c | 4 | * |
d48672a2 LW |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. | |
8d063cd8 | 7 | * |
8d063cd8 | 8 | */ |
a0d0e21e LW |
9 | |
10 | /* | |
11 | * "Very useful, no doubt, that was to Saruman; yet it seems that he was | |
12 | * not content." --Gandalf | |
13 | */ | |
8d063cd8 | 14 | |
8d063cd8 | 15 | #include "EXTERN.h" |
864dbfa3 | 16 | #define PERL_IN_UTIL_C |
8d063cd8 | 17 | #include "perl.h" |
62b28dd9 | 18 | |
64ca3a65 | 19 | #ifndef PERL_MICRO |
e1dfb34b | 20 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
a687059c | 21 | #include <signal.h> |
62b28dd9 | 22 | #endif |
a687059c | 23 | |
36477c24 | 24 | #ifndef SIG_ERR |
25 | # define SIG_ERR ((Sighandler_t) -1) | |
26 | #endif | |
64ca3a65 | 27 | #endif |
36477c24 | 28 | |
ff68c719 | 29 | #ifdef I_SYS_WAIT |
30 | # include <sys/wait.h> | |
31 | #endif | |
32 | ||
868439a2 JH |
33 | #ifdef HAS_SELECT |
34 | # ifdef I_SYS_SELECT | |
35 | # include <sys/select.h> | |
36 | # endif | |
37 | #endif | |
38 | ||
8d063cd8 | 39 | #define FLUSH |
8d063cd8 | 40 | |
16cebae2 GS |
41 | #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC) |
42 | # define FD_CLOEXEC 1 /* NeXT needs this */ | |
43 | #endif | |
44 | ||
a687059c LW |
45 | /* NOTE: Do not call the next three routines directly. Use the macros |
46 | * in handy.h, so that we can easily redefine everything to do tracking of | |
47 | * allocated hunks back to the original New to track down any memory leaks. | |
20cec16a | 48 | * XXX This advice seems to be widely ignored :-( --AD August 1996. |
a687059c LW |
49 | */ |
50 | ||
26fa51c3 AMS |
51 | /* paranoid version of system's malloc() */ |
52 | ||
bd4080b3 | 53 | Malloc_t |
4f63d024 | 54 | Perl_safesysmalloc(MEM_SIZE size) |
8d063cd8 | 55 | { |
54aff467 | 56 | dTHX; |
bd4080b3 | 57 | Malloc_t ptr; |
55497cff | 58 | #ifdef HAS_64K_LIMIT |
62b28dd9 | 59 | if (size > 0xffff) { |
bf49b057 | 60 | PerlIO_printf(Perl_error_log, |
16cebae2 | 61 | "Allocation too large: %lx\n", size) FLUSH; |
54aff467 | 62 | my_exit(1); |
62b28dd9 | 63 | } |
55497cff | 64 | #endif /* HAS_64K_LIMIT */ |
34de22dd LW |
65 | #ifdef DEBUGGING |
66 | if ((long)size < 0) | |
4f63d024 | 67 | Perl_croak_nocontext("panic: malloc"); |
34de22dd | 68 | #endif |
12ae5dfc | 69 | ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */ |
da927450 | 70 | PERL_ALLOC_CHECK(ptr); |
97835f67 | 71 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size)); |
8d063cd8 LW |
72 | if (ptr != Nullch) |
73 | return ptr; | |
3280af22 | 74 | else if (PL_nomemok) |
7c0587c8 | 75 | return Nullch; |
8d063cd8 | 76 | else { |
bf49b057 | 77 | PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH; |
54aff467 | 78 | my_exit(1); |
3aed30dc | 79 | return Nullch; |
8d063cd8 LW |
80 | } |
81 | /*NOTREACHED*/ | |
82 | } | |
83 | ||
f2517201 | 84 | /* paranoid version of system's realloc() */ |
8d063cd8 | 85 | |
bd4080b3 | 86 | Malloc_t |
4f63d024 | 87 | Perl_safesysrealloc(Malloc_t where,MEM_SIZE size) |
8d063cd8 | 88 | { |
54aff467 | 89 | dTHX; |
bd4080b3 | 90 | Malloc_t ptr; |
9a34ef1d | 91 | #if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) && !defined(PERL_MICRO) |
6ad3d225 | 92 | Malloc_t PerlMem_realloc(); |
ecfc5424 | 93 | #endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */ |
8d063cd8 | 94 | |
a1d180c4 | 95 | #ifdef HAS_64K_LIMIT |
5f05dabc | 96 | if (size > 0xffff) { |
bf49b057 | 97 | PerlIO_printf(Perl_error_log, |
5f05dabc | 98 | "Reallocation too large: %lx\n", size) FLUSH; |
54aff467 | 99 | my_exit(1); |
5f05dabc | 100 | } |
55497cff | 101 | #endif /* HAS_64K_LIMIT */ |
7614df0c | 102 | if (!size) { |
f2517201 | 103 | safesysfree(where); |
7614df0c JD |
104 | return NULL; |
105 | } | |
106 | ||
378cc40b | 107 | if (!where) |
f2517201 | 108 | return safesysmalloc(size); |
34de22dd LW |
109 | #ifdef DEBUGGING |
110 | if ((long)size < 0) | |
4f63d024 | 111 | Perl_croak_nocontext("panic: realloc"); |
34de22dd | 112 | #endif |
12ae5dfc | 113 | ptr = (Malloc_t)PerlMem_realloc(where,size); |
da927450 | 114 | PERL_ALLOC_CHECK(ptr); |
a1d180c4 | 115 | |
97835f67 JH |
116 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++)); |
117 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size)); | |
79072805 | 118 | |
8d063cd8 LW |
119 | if (ptr != Nullch) |
120 | return ptr; | |
3280af22 | 121 | else if (PL_nomemok) |
7c0587c8 | 122 | return Nullch; |
8d063cd8 | 123 | else { |
bf49b057 | 124 | PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH; |
54aff467 | 125 | my_exit(1); |
4e35701f | 126 | return Nullch; |
8d063cd8 LW |
127 | } |
128 | /*NOTREACHED*/ | |
129 | } | |
130 | ||
f2517201 | 131 | /* safe version of system's free() */ |
8d063cd8 | 132 | |
54310121 | 133 | Free_t |
4f63d024 | 134 | Perl_safesysfree(Malloc_t where) |
8d063cd8 | 135 | { |
155aba94 | 136 | #ifdef PERL_IMPLICIT_SYS |
54aff467 | 137 | dTHX; |
155aba94 | 138 | #endif |
97835f67 | 139 | DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++)); |
378cc40b | 140 | if (where) { |
de3bb511 | 141 | /*SUPPRESS 701*/ |
6ad3d225 | 142 | PerlMem_free(where); |
378cc40b | 143 | } |
8d063cd8 LW |
144 | } |
145 | ||
f2517201 | 146 | /* safe version of system's calloc() */ |
1050c9ca | 147 | |
bd4080b3 | 148 | Malloc_t |
4f63d024 | 149 | Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size) |
1050c9ca | 150 | { |
54aff467 | 151 | dTHX; |
bd4080b3 | 152 | Malloc_t ptr; |
1050c9ca | 153 | |
55497cff | 154 | #ifdef HAS_64K_LIMIT |
5f05dabc | 155 | if (size * count > 0xffff) { |
bf49b057 | 156 | PerlIO_printf(Perl_error_log, |
5f05dabc | 157 | "Allocation too large: %lx\n", size * count) FLUSH; |
54aff467 | 158 | my_exit(1); |
5f05dabc | 159 | } |
55497cff | 160 | #endif /* HAS_64K_LIMIT */ |
1050c9ca | 161 | #ifdef DEBUGGING |
162 | if ((long)size < 0 || (long)count < 0) | |
4f63d024 | 163 | Perl_croak_nocontext("panic: calloc"); |
1050c9ca | 164 | #endif |
0b7c1c42 | 165 | size *= count; |
12ae5dfc | 166 | ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */ |
da927450 | 167 | PERL_ALLOC_CHECK(ptr); |
97835f67 | 168 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) calloc %ld x %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)count,(long)size)); |
1050c9ca | 169 | if (ptr != Nullch) { |
170 | memset((void*)ptr, 0, size); | |
171 | return ptr; | |
172 | } | |
3280af22 | 173 | else if (PL_nomemok) |
1050c9ca | 174 | return Nullch; |
175 | else { | |
bf49b057 | 176 | PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH; |
54aff467 | 177 | my_exit(1); |
4e35701f | 178 | return Nullch; |
1050c9ca | 179 | } |
180 | /*NOTREACHED*/ | |
181 | } | |
182 | ||
cae6d0e5 GS |
183 | /* These must be defined when not using Perl's malloc for binary |
184 | * compatibility */ | |
185 | ||
186 | #ifndef MYMALLOC | |
187 | ||
188 | Malloc_t Perl_malloc (MEM_SIZE nbytes) | |
189 | { | |
190 | dTHXs; | |
077a72a9 | 191 | return (Malloc_t)PerlMem_malloc(nbytes); |
cae6d0e5 GS |
192 | } |
193 | ||
194 | Malloc_t Perl_calloc (MEM_SIZE elements, MEM_SIZE size) | |
195 | { | |
196 | dTHXs; | |
077a72a9 | 197 | return (Malloc_t)PerlMem_calloc(elements, size); |
cae6d0e5 GS |
198 | } |
199 | ||
200 | Malloc_t Perl_realloc (Malloc_t where, MEM_SIZE nbytes) | |
201 | { | |
202 | dTHXs; | |
077a72a9 | 203 | return (Malloc_t)PerlMem_realloc(where, nbytes); |
cae6d0e5 GS |
204 | } |
205 | ||
206 | Free_t Perl_mfree (Malloc_t where) | |
207 | { | |
208 | dTHXs; | |
209 | PerlMem_free(where); | |
210 | } | |
211 | ||
212 | #endif | |
213 | ||
8d063cd8 LW |
214 | /* copy a string up to some (non-backslashed) delimiter, if any */ |
215 | ||
216 | char * | |
864dbfa3 | 217 | Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen) |
8d063cd8 | 218 | { |
fc36a67e | 219 | register I32 tolen; |
220 | for (tolen = 0; from < fromend; from++, tolen++) { | |
378cc40b LW |
221 | if (*from == '\\') { |
222 | if (from[1] == delim) | |
223 | from++; | |
fc36a67e | 224 | else { |
225 | if (to < toend) | |
226 | *to++ = *from; | |
227 | tolen++; | |
228 | from++; | |
229 | } | |
378cc40b | 230 | } |
bedebaa5 | 231 | else if (*from == delim) |
8d063cd8 | 232 | break; |
fc36a67e | 233 | if (to < toend) |
234 | *to++ = *from; | |
8d063cd8 | 235 | } |
bedebaa5 CS |
236 | if (to < toend) |
237 | *to = '\0'; | |
fc36a67e | 238 | *retlen = tolen; |
8d063cd8 LW |
239 | return from; |
240 | } | |
241 | ||
242 | /* return ptr to little string in big string, NULL if not found */ | |
378cc40b | 243 | /* This routine was donated by Corey Satten. */ |
8d063cd8 LW |
244 | |
245 | char * | |
864dbfa3 | 246 | Perl_instr(pTHX_ register const char *big, register const char *little) |
378cc40b | 247 | { |
08105a92 | 248 | register const char *s, *x; |
79072805 | 249 | register I32 first; |
378cc40b | 250 | |
a687059c | 251 | if (!little) |
08105a92 | 252 | return (char*)big; |
a687059c | 253 | first = *little++; |
378cc40b | 254 | if (!first) |
08105a92 | 255 | return (char*)big; |
378cc40b LW |
256 | while (*big) { |
257 | if (*big++ != first) | |
258 | continue; | |
259 | for (x=big,s=little; *s; /**/ ) { | |
260 | if (!*x) | |
261 | return Nullch; | |
262 | if (*s++ != *x++) { | |
263 | s--; | |
264 | break; | |
265 | } | |
266 | } | |
267 | if (!*s) | |
08105a92 | 268 | return (char*)(big-1); |
378cc40b LW |
269 | } |
270 | return Nullch; | |
271 | } | |
8d063cd8 | 272 | |
a687059c LW |
273 | /* same as instr but allow embedded nulls */ |
274 | ||
275 | char * | |
864dbfa3 | 276 | Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend) |
8d063cd8 | 277 | { |
08105a92 | 278 | register const char *s, *x; |
79072805 | 279 | register I32 first = *little; |
08105a92 | 280 | register const char *littleend = lend; |
378cc40b | 281 | |
a0d0e21e | 282 | if (!first && little >= littleend) |
08105a92 | 283 | return (char*)big; |
de3bb511 LW |
284 | if (bigend - big < littleend - little) |
285 | return Nullch; | |
a687059c LW |
286 | bigend -= littleend - little++; |
287 | while (big <= bigend) { | |
288 | if (*big++ != first) | |
289 | continue; | |
290 | for (x=big,s=little; s < littleend; /**/ ) { | |
291 | if (*s++ != *x++) { | |
292 | s--; | |
293 | break; | |
294 | } | |
295 | } | |
296 | if (s >= littleend) | |
08105a92 | 297 | return (char*)(big-1); |
378cc40b | 298 | } |
a687059c LW |
299 | return Nullch; |
300 | } | |
301 | ||
302 | /* reverse of the above--find last substring */ | |
303 | ||
304 | char * | |
864dbfa3 | 305 | Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend) |
a687059c | 306 | { |
08105a92 GS |
307 | register const char *bigbeg; |
308 | register const char *s, *x; | |
79072805 | 309 | register I32 first = *little; |
08105a92 | 310 | register const char *littleend = lend; |
a687059c | 311 | |
a0d0e21e | 312 | if (!first && little >= littleend) |
08105a92 | 313 | return (char*)bigend; |
a687059c LW |
314 | bigbeg = big; |
315 | big = bigend - (littleend - little++); | |
316 | while (big >= bigbeg) { | |
317 | if (*big-- != first) | |
318 | continue; | |
319 | for (x=big+2,s=little; s < littleend; /**/ ) { | |
320 | if (*s++ != *x++) { | |
321 | s--; | |
322 | break; | |
323 | } | |
324 | } | |
325 | if (s >= littleend) | |
08105a92 | 326 | return (char*)(big+1); |
378cc40b | 327 | } |
a687059c | 328 | return Nullch; |
378cc40b | 329 | } |
a687059c | 330 | |
cf93c79d IZ |
331 | #define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/ |
332 | ||
333 | /* As a space optimization, we do not compile tables for strings of length | |
334 | 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are | |
335 | special-cased in fbm_instr(). | |
336 | ||
337 | If FBMcf_TAIL, the table is created as if the string has a trailing \n. */ | |
338 | ||
954c1994 | 339 | /* |
ccfc67b7 JH |
340 | =head1 Miscellaneous Functions |
341 | ||
954c1994 GS |
342 | =for apidoc fbm_compile |
343 | ||
344 | Analyses the string in order to make fast searches on it using fbm_instr() | |
345 | -- the Boyer-Moore algorithm. | |
346 | ||
347 | =cut | |
348 | */ | |
349 | ||
378cc40b | 350 | void |
7506f9c3 | 351 | Perl_fbm_compile(pTHX_ SV *sv, U32 flags) |
378cc40b | 352 | { |
942e002e GS |
353 | register U8 *s; |
354 | register U8 *table; | |
79072805 | 355 | register U32 i; |
0b71040e | 356 | STRLEN len; |
79072805 LW |
357 | I32 rarest = 0; |
358 | U32 frequency = 256; | |
359 | ||
c517dc2b JH |
360 | if (flags & FBMcf_TAIL) { |
361 | MAGIC *mg = SvUTF8(sv) && SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : NULL; | |
cf93c79d | 362 | sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */ |
c517dc2b JH |
363 | if (mg && mg->mg_len >= 0) |
364 | mg->mg_len++; | |
365 | } | |
942e002e | 366 | s = (U8*)SvPV_force(sv, len); |
07f14f54 | 367 | (void)SvUPGRADE(sv, SVt_PVBM); |
d1be9408 | 368 | if (len == 0) /* TAIL might be on a zero-length string. */ |
cf93c79d | 369 | return; |
02128f11 | 370 | if (len > 2) { |
7506f9c3 | 371 | U8 mlen; |
cf93c79d IZ |
372 | unsigned char *sb; |
373 | ||
7506f9c3 | 374 | if (len > 255) |
cf93c79d | 375 | mlen = 255; |
7506f9c3 GS |
376 | else |
377 | mlen = (U8)len; | |
378 | Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET); | |
cf93c79d | 379 | table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET); |
7506f9c3 GS |
380 | s = table - 1 - FBM_TABLE_OFFSET; /* last char */ |
381 | memset((void*)table, mlen, 256); | |
382 | table[-1] = (U8)flags; | |
02128f11 | 383 | i = 0; |
7506f9c3 | 384 | sb = s - mlen + 1; /* first char (maybe) */ |
cf93c79d IZ |
385 | while (s >= sb) { |
386 | if (table[*s] == mlen) | |
7506f9c3 | 387 | table[*s] = (U8)i; |
cf93c79d IZ |
388 | s--, i++; |
389 | } | |
378cc40b | 390 | } |
14befaf4 | 391 | sv_magic(sv, Nullsv, PERL_MAGIC_bm, Nullch, 0); /* deep magic */ |
79072805 | 392 | SvVALID_on(sv); |
378cc40b | 393 | |
463ee0b2 | 394 | s = (unsigned char*)(SvPVX(sv)); /* deeper magic */ |
bbce6d69 | 395 | for (i = 0; i < len; i++) { |
22c35a8c | 396 | if (PL_freq[s[i]] < frequency) { |
bbce6d69 | 397 | rarest = i; |
22c35a8c | 398 | frequency = PL_freq[s[i]]; |
378cc40b LW |
399 | } |
400 | } | |
79072805 | 401 | BmRARE(sv) = s[rarest]; |
eb160463 | 402 | BmPREVIOUS(sv) = (U16)rarest; |
cf93c79d IZ |
403 | BmUSEFUL(sv) = 100; /* Initial value */ |
404 | if (flags & FBMcf_TAIL) | |
405 | SvTAIL_on(sv); | |
7506f9c3 GS |
406 | DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n", |
407 | BmRARE(sv),BmPREVIOUS(sv))); | |
378cc40b LW |
408 | } |
409 | ||
cf93c79d IZ |
410 | /* If SvTAIL(littlestr), it has a fake '\n' at end. */ |
411 | /* If SvTAIL is actually due to \Z or \z, this gives false positives | |
412 | if multiline */ | |
413 | ||
954c1994 GS |
414 | /* |
415 | =for apidoc fbm_instr | |
416 | ||
417 | Returns the location of the SV in the string delimited by C<str> and | |
418 | C<strend>. It returns C<Nullch> if the string can't be found. The C<sv> | |
419 | does not have to be fbm_compiled, but the search will not be as fast | |
420 | then. | |
421 | ||
422 | =cut | |
423 | */ | |
424 | ||
378cc40b | 425 | char * |
864dbfa3 | 426 | Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags) |
378cc40b | 427 | { |
a687059c | 428 | register unsigned char *s; |
cf93c79d IZ |
429 | STRLEN l; |
430 | register unsigned char *little = (unsigned char *)SvPV(littlestr,l); | |
431 | register STRLEN littlelen = l; | |
432 | register I32 multiline = flags & FBMrf_MULTILINE; | |
433 | ||
eb160463 | 434 | if ((STRLEN)(bigend - big) < littlelen) { |
a1d180c4 | 435 | if ( SvTAIL(littlestr) |
eb160463 | 436 | && ((STRLEN)(bigend - big) == littlelen - 1) |
a1d180c4 | 437 | && (littlelen == 1 |
12ae5dfc JH |
438 | || (*big == *little && |
439 | memEQ((char *)big, (char *)little, littlelen - 1)))) | |
cf93c79d IZ |
440 | return (char*)big; |
441 | return Nullch; | |
442 | } | |
378cc40b | 443 | |
cf93c79d | 444 | if (littlelen <= 2) { /* Special-cased */ |
cf93c79d IZ |
445 | |
446 | if (littlelen == 1) { | |
447 | if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */ | |
448 | /* Know that bigend != big. */ | |
449 | if (bigend[-1] == '\n') | |
450 | return (char *)(bigend - 1); | |
451 | return (char *) bigend; | |
452 | } | |
453 | s = big; | |
454 | while (s < bigend) { | |
455 | if (*s == *little) | |
456 | return (char *)s; | |
457 | s++; | |
458 | } | |
459 | if (SvTAIL(littlestr)) | |
460 | return (char *) bigend; | |
461 | return Nullch; | |
462 | } | |
463 | if (!littlelen) | |
464 | return (char*)big; /* Cannot be SvTAIL! */ | |
465 | ||
466 | /* littlelen is 2 */ | |
467 | if (SvTAIL(littlestr) && !multiline) { | |
468 | if (bigend[-1] == '\n' && bigend[-2] == *little) | |
469 | return (char*)bigend - 2; | |
470 | if (bigend[-1] == *little) | |
471 | return (char*)bigend - 1; | |
472 | return Nullch; | |
473 | } | |
474 | { | |
475 | /* This should be better than FBM if c1 == c2, and almost | |
476 | as good otherwise: maybe better since we do less indirection. | |
477 | And we save a lot of memory by caching no table. */ | |
478 | register unsigned char c1 = little[0]; | |
479 | register unsigned char c2 = little[1]; | |
480 | ||
481 | s = big + 1; | |
482 | bigend--; | |
483 | if (c1 != c2) { | |
484 | while (s <= bigend) { | |
485 | if (s[0] == c2) { | |
486 | if (s[-1] == c1) | |
487 | return (char*)s - 1; | |
488 | s += 2; | |
489 | continue; | |
3fe6f2dc | 490 | } |
cf93c79d IZ |
491 | next_chars: |
492 | if (s[0] == c1) { | |
493 | if (s == bigend) | |
494 | goto check_1char_anchor; | |
495 | if (s[1] == c2) | |
496 | return (char*)s; | |
497 | else { | |
498 | s++; | |
499 | goto next_chars; | |
500 | } | |
501 | } | |
502 | else | |
503 | s += 2; | |
504 | } | |
505 | goto check_1char_anchor; | |
506 | } | |
507 | /* Now c1 == c2 */ | |
508 | while (s <= bigend) { | |
509 | if (s[0] == c1) { | |
510 | if (s[-1] == c1) | |
511 | return (char*)s - 1; | |
512 | if (s == bigend) | |
513 | goto check_1char_anchor; | |
514 | if (s[1] == c1) | |
515 | return (char*)s; | |
516 | s += 3; | |
02128f11 | 517 | } |
c277df42 | 518 | else |
cf93c79d | 519 | s += 2; |
c277df42 | 520 | } |
c277df42 | 521 | } |
cf93c79d IZ |
522 | check_1char_anchor: /* One char and anchor! */ |
523 | if (SvTAIL(littlestr) && (*bigend == *little)) | |
524 | return (char *)bigend; /* bigend is already decremented. */ | |
525 | return Nullch; | |
d48672a2 | 526 | } |
cf93c79d | 527 | if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */ |
bbce6d69 | 528 | s = bigend - littlelen; |
a1d180c4 | 529 | if (s >= big && bigend[-1] == '\n' && *s == *little |
cf93c79d IZ |
530 | /* Automatically of length > 2 */ |
531 | && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2)) | |
7506f9c3 | 532 | { |
bbce6d69 | 533 | return (char*)s; /* how sweet it is */ |
7506f9c3 GS |
534 | } |
535 | if (s[1] == *little | |
536 | && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2)) | |
537 | { | |
cf93c79d | 538 | return (char*)s + 1; /* how sweet it is */ |
7506f9c3 | 539 | } |
02128f11 IZ |
540 | return Nullch; |
541 | } | |
cf93c79d IZ |
542 | if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) { |
543 | char *b = ninstr((char*)big,(char*)bigend, | |
544 | (char*)little, (char*)little + littlelen); | |
545 | ||
546 | if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */ | |
547 | /* Chop \n from littlestr: */ | |
548 | s = bigend - littlelen + 1; | |
7506f9c3 GS |
549 | if (*s == *little |
550 | && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2)) | |
551 | { | |
3fe6f2dc | 552 | return (char*)s; |
7506f9c3 | 553 | } |
cf93c79d | 554 | return Nullch; |
a687059c | 555 | } |
cf93c79d | 556 | return b; |
a687059c | 557 | } |
a1d180c4 | 558 | |
cf93c79d IZ |
559 | { /* Do actual FBM. */ |
560 | register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET; | |
561 | register unsigned char *oldlittle; | |
562 | ||
eb160463 | 563 | if (littlelen > (STRLEN)(bigend - big)) |
cf93c79d IZ |
564 | return Nullch; |
565 | --littlelen; /* Last char found by table lookup */ | |
566 | ||
567 | s = big + littlelen; | |
568 | little += littlelen; /* last char */ | |
569 | oldlittle = little; | |
570 | if (s < bigend) { | |
571 | register I32 tmp; | |
572 | ||
573 | top2: | |
574 | /*SUPPRESS 560*/ | |
7506f9c3 | 575 | if ((tmp = table[*s])) { |
cf93c79d | 576 | if ((s += tmp) < bigend) |
62b28dd9 | 577 | goto top2; |
cf93c79d IZ |
578 | goto check_end; |
579 | } | |
580 | else { /* less expensive than calling strncmp() */ | |
581 | register unsigned char *olds = s; | |
582 | ||
583 | tmp = littlelen; | |
584 | ||
585 | while (tmp--) { | |
586 | if (*--s == *--little) | |
587 | continue; | |
cf93c79d IZ |
588 | s = olds + 1; /* here we pay the price for failure */ |
589 | little = oldlittle; | |
590 | if (s < bigend) /* fake up continue to outer loop */ | |
591 | goto top2; | |
592 | goto check_end; | |
593 | } | |
594 | return (char *)s; | |
a687059c | 595 | } |
378cc40b | 596 | } |
cf93c79d IZ |
597 | check_end: |
598 | if ( s == bigend && (table[-1] & FBMcf_TAIL) | |
12ae5dfc JH |
599 | && memEQ((char *)(bigend - littlelen), |
600 | (char *)(oldlittle - littlelen), littlelen) ) | |
cf93c79d IZ |
601 | return (char*)bigend - littlelen; |
602 | return Nullch; | |
378cc40b | 603 | } |
378cc40b LW |
604 | } |
605 | ||
c277df42 IZ |
606 | /* start_shift, end_shift are positive quantities which give offsets |
607 | of ends of some substring of bigstr. | |
fb8eeed8 | 608 | If `last' we want the last occurrence. |
c277df42 | 609 | old_posp is the way of communication between consequent calls if |
a1d180c4 | 610 | the next call needs to find the . |
c277df42 | 611 | The initial *old_posp should be -1. |
cf93c79d IZ |
612 | |
613 | Note that we take into account SvTAIL, so one can get extra | |
614 | optimizations if _ALL flag is set. | |
c277df42 IZ |
615 | */ |
616 | ||
cf93c79d | 617 | /* If SvTAIL is actually due to \Z or \z, this gives false positives |
26fa51c3 | 618 | if PL_multiline. In fact if !PL_multiline the authoritative answer |
cf93c79d IZ |
619 | is not supported yet. */ |
620 | ||
378cc40b | 621 | char * |
864dbfa3 | 622 | Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last) |
378cc40b | 623 | { |
a687059c LW |
624 | register unsigned char *s, *x; |
625 | register unsigned char *big; | |
79072805 LW |
626 | register I32 pos; |
627 | register I32 previous; | |
628 | register I32 first; | |
a687059c | 629 | register unsigned char *little; |
c277df42 | 630 | register I32 stop_pos; |
a687059c | 631 | register unsigned char *littleend; |
c277df42 | 632 | I32 found = 0; |
378cc40b | 633 | |
c277df42 | 634 | if (*old_posp == -1 |
3280af22 | 635 | ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0 |
cf93c79d IZ |
636 | : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) { |
637 | cant_find: | |
a1d180c4 | 638 | if ( BmRARE(littlestr) == '\n' |
cf93c79d IZ |
639 | && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) { |
640 | little = (unsigned char *)(SvPVX(littlestr)); | |
641 | littleend = little + SvCUR(littlestr); | |
642 | first = *little++; | |
643 | goto check_tail; | |
644 | } | |
378cc40b | 645 | return Nullch; |
cf93c79d IZ |
646 | } |
647 | ||
463ee0b2 | 648 | little = (unsigned char *)(SvPVX(littlestr)); |
79072805 | 649 | littleend = little + SvCUR(littlestr); |
378cc40b | 650 | first = *little++; |
c277df42 | 651 | /* The value of pos we can start at: */ |
79072805 | 652 | previous = BmPREVIOUS(littlestr); |
463ee0b2 | 653 | big = (unsigned char *)(SvPVX(bigstr)); |
c277df42 IZ |
654 | /* The value of pos we can stop at: */ |
655 | stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous); | |
cf93c79d | 656 | if (previous + start_shift > stop_pos) { |
0fe87f7c HS |
657 | /* |
658 | stop_pos does not include SvTAIL in the count, so this check is incorrect | |
659 | (I think) - see [ID 20010618.006] and t/op/study.t. HVDS 2001/06/19 | |
660 | */ | |
661 | #if 0 | |
cf93c79d IZ |
662 | if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */ |
663 | goto check_tail; | |
0fe87f7c | 664 | #endif |
cf93c79d IZ |
665 | return Nullch; |
666 | } | |
c277df42 | 667 | while (pos < previous + start_shift) { |
3280af22 | 668 | if (!(pos += PL_screamnext[pos])) |
cf93c79d | 669 | goto cant_find; |
378cc40b | 670 | } |
de3bb511 | 671 | big -= previous; |
bbce6d69 | 672 | do { |
ef64f398 | 673 | if (pos >= stop_pos) break; |
bbce6d69 | 674 | if (big[pos] != first) |
675 | continue; | |
676 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { | |
bbce6d69 | 677 | if (*s++ != *x++) { |
678 | s--; | |
679 | break; | |
378cc40b | 680 | } |
bbce6d69 | 681 | } |
c277df42 IZ |
682 | if (s == littleend) { |
683 | *old_posp = pos; | |
684 | if (!last) return (char *)(big+pos); | |
685 | found = 1; | |
686 | } | |
3280af22 | 687 | } while ( pos += PL_screamnext[pos] ); |
a1d180c4 | 688 | if (last && found) |
cf93c79d | 689 | return (char *)(big+(*old_posp)); |
cf93c79d IZ |
690 | check_tail: |
691 | if (!SvTAIL(littlestr) || (end_shift > 0)) | |
692 | return Nullch; | |
693 | /* Ignore the trailing "\n". This code is not microoptimized */ | |
694 | big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr)); | |
695 | stop_pos = littleend - little; /* Actual littlestr len */ | |
696 | if (stop_pos == 0) | |
697 | return (char*)big; | |
698 | big -= stop_pos; | |
699 | if (*big == first | |
12ae5dfc JH |
700 | && ((stop_pos == 1) || |
701 | memEQ((char *)(big + 1), (char *)little, stop_pos - 1))) | |
cf93c79d IZ |
702 | return (char*)big; |
703 | return Nullch; | |
8d063cd8 LW |
704 | } |
705 | ||
79072805 | 706 | I32 |
864dbfa3 | 707 | Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len) |
79072805 | 708 | { |
bbce6d69 | 709 | register U8 *a = (U8 *)s1; |
710 | register U8 *b = (U8 *)s2; | |
79072805 | 711 | while (len--) { |
22c35a8c | 712 | if (*a != *b && *a != PL_fold[*b]) |
bbce6d69 | 713 | return 1; |
714 | a++,b++; | |
715 | } | |
716 | return 0; | |
717 | } | |
718 | ||
719 | I32 | |
864dbfa3 | 720 | Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len) |
bbce6d69 | 721 | { |
722 | register U8 *a = (U8 *)s1; | |
723 | register U8 *b = (U8 *)s2; | |
724 | while (len--) { | |
22c35a8c | 725 | if (*a != *b && *a != PL_fold_locale[*b]) |
bbce6d69 | 726 | return 1; |
727 | a++,b++; | |
79072805 LW |
728 | } |
729 | return 0; | |
730 | } | |
731 | ||
8d063cd8 LW |
732 | /* copy a string to a safe spot */ |
733 | ||
954c1994 | 734 | /* |
ccfc67b7 JH |
735 | =head1 Memory Management |
736 | ||
954c1994 GS |
737 | =for apidoc savepv |
738 | ||
61a925ed AMS |
739 | Perl's version of C<strdup()>. Returns a pointer to a newly allocated |
740 | string which is a duplicate of C<pv>. The size of the string is | |
741 | determined by C<strlen()>. The memory allocated for the new string can | |
742 | be freed with the C<Safefree()> function. | |
954c1994 GS |
743 | |
744 | =cut | |
745 | */ | |
746 | ||
8d063cd8 | 747 | char * |
efdfce31 | 748 | Perl_savepv(pTHX_ const char *pv) |
8d063cd8 | 749 | { |
965155cb | 750 | register char *newaddr = Nullch; |
efdfce31 AMS |
751 | if (pv) { |
752 | New(902,newaddr,strlen(pv)+1,char); | |
753 | (void)strcpy(newaddr,pv); | |
965155cb | 754 | } |
8d063cd8 LW |
755 | return newaddr; |
756 | } | |
757 | ||
a687059c LW |
758 | /* same thing but with a known length */ |
759 | ||
954c1994 GS |
760 | /* |
761 | =for apidoc savepvn | |
762 | ||
61a925ed AMS |
763 | Perl's version of what C<strndup()> would be if it existed. Returns a |
764 | pointer to a newly allocated string which is a duplicate of the first | |
765 | C<len> bytes from C<pv>. The memory allocated for the new string can be | |
766 | freed with the C<Safefree()> function. | |
954c1994 GS |
767 | |
768 | =cut | |
769 | */ | |
770 | ||
a687059c | 771 | char * |
efdfce31 | 772 | Perl_savepvn(pTHX_ const char *pv, register I32 len) |
a687059c LW |
773 | { |
774 | register char *newaddr; | |
775 | ||
776 | New(903,newaddr,len+1,char); | |
92110913 | 777 | /* Give a meaning to NULL pointer mainly for the use in sv_magic() */ |
efdfce31 AMS |
778 | if (pv) { |
779 | Copy(pv,newaddr,len,char); /* might not be null terminated */ | |
92110913 NIS |
780 | newaddr[len] = '\0'; /* is now */ |
781 | } | |
782 | else { | |
783 | Zero(newaddr,len+1,char); | |
784 | } | |
a687059c LW |
785 | return newaddr; |
786 | } | |
787 | ||
05ec9bb3 NIS |
788 | /* |
789 | =for apidoc savesharedpv | |
790 | ||
61a925ed AMS |
791 | A version of C<savepv()> which allocates the duplicate string in memory |
792 | which is shared between threads. | |
05ec9bb3 NIS |
793 | |
794 | =cut | |
795 | */ | |
796 | char * | |
efdfce31 | 797 | Perl_savesharedpv(pTHX_ const char *pv) |
05ec9bb3 | 798 | { |
965155cb | 799 | register char *newaddr = Nullch; |
efdfce31 AMS |
800 | if (pv) { |
801 | newaddr = (char*)PerlMemShared_malloc(strlen(pv)+1); | |
802 | (void)strcpy(newaddr,pv); | |
05ec9bb3 NIS |
803 | } |
804 | return newaddr; | |
805 | } | |
806 | ||
807 | ||
808 | ||
cea2e8a9 | 809 | /* the SV for Perl_form() and mess() is not kept in an arena */ |
fc36a67e | 810 | |
76e3520e | 811 | STATIC SV * |
cea2e8a9 | 812 | S_mess_alloc(pTHX) |
fc36a67e | 813 | { |
814 | SV *sv; | |
815 | XPVMG *any; | |
816 | ||
e72dc28c GS |
817 | if (!PL_dirty) |
818 | return sv_2mortal(newSVpvn("",0)); | |
819 | ||
0372dbb6 GS |
820 | if (PL_mess_sv) |
821 | return PL_mess_sv; | |
822 | ||
fc36a67e | 823 | /* Create as PVMG now, to avoid any upgrading later */ |
824 | New(905, sv, 1, SV); | |
825 | Newz(905, any, 1, XPVMG); | |
826 | SvFLAGS(sv) = SVt_PVMG; | |
827 | SvANY(sv) = (void*)any; | |
828 | SvREFCNT(sv) = 1 << 30; /* practically infinite */ | |
e72dc28c | 829 | PL_mess_sv = sv; |
fc36a67e | 830 | return sv; |
831 | } | |
832 | ||
c5be433b | 833 | #if defined(PERL_IMPLICIT_CONTEXT) |
cea2e8a9 GS |
834 | char * |
835 | Perl_form_nocontext(const char* pat, ...) | |
836 | { | |
837 | dTHX; | |
c5be433b | 838 | char *retval; |
cea2e8a9 GS |
839 | va_list args; |
840 | va_start(args, pat); | |
c5be433b | 841 | retval = vform(pat, &args); |
cea2e8a9 | 842 | va_end(args); |
c5be433b | 843 | return retval; |
cea2e8a9 | 844 | } |
c5be433b | 845 | #endif /* PERL_IMPLICIT_CONTEXT */ |
cea2e8a9 | 846 | |
7c9e965c | 847 | /* |
ccfc67b7 | 848 | =head1 Miscellaneous Functions |
7c9e965c JP |
849 | =for apidoc form |
850 | ||
851 | Takes a sprintf-style format pattern and conventional | |
852 | (non-SV) arguments and returns the formatted string. | |
853 | ||
854 | (char *) Perl_form(pTHX_ const char* pat, ...) | |
855 | ||
856 | can be used any place a string (char *) is required: | |
857 | ||
858 | char * s = Perl_form("%d.%d",major,minor); | |
859 | ||
860 | Uses a single private buffer so if you want to format several strings you | |
861 | must explicitly copy the earlier strings away (and free the copies when you | |
862 | are done). | |
863 | ||
864 | =cut | |
865 | */ | |
866 | ||
8990e307 | 867 | char * |
864dbfa3 | 868 | Perl_form(pTHX_ const char* pat, ...) |
8990e307 | 869 | { |
c5be433b | 870 | char *retval; |
46fc3d4c | 871 | va_list args; |
46fc3d4c | 872 | va_start(args, pat); |
c5be433b | 873 | retval = vform(pat, &args); |
46fc3d4c | 874 | va_end(args); |
c5be433b GS |
875 | return retval; |
876 | } | |
877 | ||
878 | char * | |
879 | Perl_vform(pTHX_ const char *pat, va_list *args) | |
880 | { | |
881 | SV *sv = mess_alloc(); | |
882 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); | |
e72dc28c | 883 | return SvPVX(sv); |
46fc3d4c | 884 | } |
a687059c | 885 | |
5a844595 GS |
886 | #if defined(PERL_IMPLICIT_CONTEXT) |
887 | SV * | |
888 | Perl_mess_nocontext(const char *pat, ...) | |
889 | { | |
890 | dTHX; | |
891 | SV *retval; | |
892 | va_list args; | |
893 | va_start(args, pat); | |
894 | retval = vmess(pat, &args); | |
895 | va_end(args); | |
896 | return retval; | |
897 | } | |
898 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
899 | ||
06bf62c7 | 900 | SV * |
5a844595 GS |
901 | Perl_mess(pTHX_ const char *pat, ...) |
902 | { | |
903 | SV *retval; | |
904 | va_list args; | |
905 | va_start(args, pat); | |
906 | retval = vmess(pat, &args); | |
907 | va_end(args); | |
908 | return retval; | |
909 | } | |
910 | ||
ae7d165c PJ |
911 | STATIC COP* |
912 | S_closest_cop(pTHX_ COP *cop, OP *o) | |
913 | { | |
914 | /* Look for PL_op starting from o. cop is the last COP we've seen. */ | |
915 | ||
916 | if (!o || o == PL_op) return cop; | |
917 | ||
918 | if (o->op_flags & OPf_KIDS) { | |
919 | OP *kid; | |
920 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
921 | { | |
922 | COP *new_cop; | |
923 | ||
924 | /* If the OP_NEXTSTATE has been optimised away we can still use it | |
925 | * the get the file and line number. */ | |
926 | ||
927 | if (kid->op_type == OP_NULL && kid->op_targ == OP_NEXTSTATE) | |
928 | cop = (COP *)kid; | |
929 | ||
930 | /* Keep searching, and return when we've found something. */ | |
931 | ||
932 | new_cop = closest_cop(cop, kid); | |
933 | if (new_cop) return new_cop; | |
934 | } | |
935 | } | |
936 | ||
937 | /* Nothing found. */ | |
938 | ||
939 | return 0; | |
940 | } | |
941 | ||
5a844595 GS |
942 | SV * |
943 | Perl_vmess(pTHX_ const char *pat, va_list *args) | |
46fc3d4c | 944 | { |
e72dc28c | 945 | SV *sv = mess_alloc(); |
46fc3d4c | 946 | static char dgd[] = " during global destruction.\n"; |
ae7d165c | 947 | COP *cop; |
46fc3d4c | 948 | |
fc36a67e | 949 | sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*)); |
46fc3d4c | 950 | if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') { |
ae7d165c PJ |
951 | |
952 | /* | |
953 | * Try and find the file and line for PL_op. This will usually be | |
954 | * PL_curcop, but it might be a cop that has been optimised away. We | |
955 | * can try to find such a cop by searching through the optree starting | |
956 | * from the sibling of PL_curcop. | |
957 | */ | |
958 | ||
959 | cop = closest_cop(PL_curcop, PL_curcop->op_sibling); | |
960 | if (!cop) cop = PL_curcop; | |
961 | ||
962 | if (CopLINE(cop)) | |
ed094faf | 963 | Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf, |
3aed30dc | 964 | OutCopFILE(cop), (IV)CopLINE(cop)); |
2035c5e8 | 965 | if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) { |
515f54a1 | 966 | bool line_mode = (RsSIMPLE(PL_rs) && |
7c1e0849 | 967 | SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n'); |
57def98f | 968 | Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf, |
edc2eac3 JH |
969 | PL_last_in_gv == PL_argvgv ? |
970 | "" : GvNAME(PL_last_in_gv), | |
971 | line_mode ? "line" : "chunk", | |
972 | (IV)IoLINES(GvIOp(PL_last_in_gv))); | |
a687059c | 973 | } |
515f54a1 | 974 | sv_catpv(sv, PL_dirty ? dgd : ".\n"); |
a687059c | 975 | } |
06bf62c7 | 976 | return sv; |
a687059c LW |
977 | } |
978 | ||
c5be433b GS |
979 | OP * |
980 | Perl_vdie(pTHX_ const char* pat, va_list *args) | |
36477c24 | 981 | { |
36477c24 | 982 | char *message; |
3280af22 | 983 | int was_in_eval = PL_in_eval; |
36477c24 | 984 | HV *stash; |
985 | GV *gv; | |
986 | CV *cv; | |
06bf62c7 GS |
987 | SV *msv; |
988 | STRLEN msglen; | |
36477c24 | 989 | |
bf49b057 | 990 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
199100c8 | 991 | "%p: die: curstack = %p, mainstack = %p\n", |
533c011a | 992 | thr, PL_curstack, PL_mainstack)); |
36477c24 | 993 | |
06bf62c7 | 994 | if (pat) { |
5a844595 GS |
995 | msv = vmess(pat, args); |
996 | if (PL_errors && SvCUR(PL_errors)) { | |
997 | sv_catsv(PL_errors, msv); | |
998 | message = SvPV(PL_errors, msglen); | |
999 | SvCUR_set(PL_errors, 0); | |
1000 | } | |
1001 | else | |
1002 | message = SvPV(msv,msglen); | |
06bf62c7 GS |
1003 | } |
1004 | else { | |
1005 | message = Nullch; | |
0f79a09d | 1006 | msglen = 0; |
06bf62c7 | 1007 | } |
36477c24 | 1008 | |
bf49b057 | 1009 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
199100c8 | 1010 | "%p: die: message = %s\ndiehook = %p\n", |
533c011a | 1011 | thr, message, PL_diehook)); |
3280af22 | 1012 | if (PL_diehook) { |
cea2e8a9 | 1013 | /* sv_2cv might call Perl_croak() */ |
3280af22 | 1014 | SV *olddiehook = PL_diehook; |
1738f5c4 | 1015 | ENTER; |
3280af22 NIS |
1016 | SAVESPTR(PL_diehook); |
1017 | PL_diehook = Nullsv; | |
1738f5c4 CS |
1018 | cv = sv_2cv(olddiehook, &stash, &gv, 0); |
1019 | LEAVE; | |
1020 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { | |
1021 | dSP; | |
774d564b | 1022 | SV *msg; |
1023 | ||
1024 | ENTER; | |
3a1f2dc9 | 1025 | save_re_context(); |
79cb57f6 | 1026 | if (message) { |
06bf62c7 | 1027 | msg = newSVpvn(message, msglen); |
4e6ea2c3 GS |
1028 | SvREADONLY_on(msg); |
1029 | SAVEFREESV(msg); | |
1030 | } | |
1031 | else { | |
1032 | msg = ERRSV; | |
1033 | } | |
1738f5c4 | 1034 | |
e788e7d3 | 1035 | PUSHSTACKi(PERLSI_DIEHOOK); |
924508f0 | 1036 | PUSHMARK(SP); |
1738f5c4 CS |
1037 | XPUSHs(msg); |
1038 | PUTBACK; | |
0cdb2077 | 1039 | call_sv((SV*)cv, G_DISCARD); |
d3acc0f7 | 1040 | POPSTACK; |
774d564b | 1041 | LEAVE; |
1738f5c4 | 1042 | } |
36477c24 | 1043 | } |
1044 | ||
06bf62c7 | 1045 | PL_restartop = die_where(message, msglen); |
bf49b057 | 1046 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
7c06b590 | 1047 | "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n", |
533c011a | 1048 | thr, PL_restartop, was_in_eval, PL_top_env)); |
3280af22 | 1049 | if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev) |
6224f72b | 1050 | JMPENV_JUMP(3); |
3280af22 | 1051 | return PL_restartop; |
36477c24 | 1052 | } |
1053 | ||
c5be433b | 1054 | #if defined(PERL_IMPLICIT_CONTEXT) |
cea2e8a9 GS |
1055 | OP * |
1056 | Perl_die_nocontext(const char* pat, ...) | |
a687059c | 1057 | { |
cea2e8a9 GS |
1058 | dTHX; |
1059 | OP *o; | |
a687059c | 1060 | va_list args; |
cea2e8a9 | 1061 | va_start(args, pat); |
c5be433b | 1062 | o = vdie(pat, &args); |
cea2e8a9 GS |
1063 | va_end(args); |
1064 | return o; | |
1065 | } | |
c5be433b | 1066 | #endif /* PERL_IMPLICIT_CONTEXT */ |
cea2e8a9 GS |
1067 | |
1068 | OP * | |
1069 | Perl_die(pTHX_ const char* pat, ...) | |
1070 | { | |
1071 | OP *o; | |
1072 | va_list args; | |
1073 | va_start(args, pat); | |
c5be433b | 1074 | o = vdie(pat, &args); |
cea2e8a9 GS |
1075 | va_end(args); |
1076 | return o; | |
1077 | } | |
1078 | ||
c5be433b GS |
1079 | void |
1080 | Perl_vcroak(pTHX_ const char* pat, va_list *args) | |
cea2e8a9 | 1081 | { |
de3bb511 | 1082 | char *message; |
748a9306 LW |
1083 | HV *stash; |
1084 | GV *gv; | |
1085 | CV *cv; | |
06bf62c7 GS |
1086 | SV *msv; |
1087 | STRLEN msglen; | |
a687059c | 1088 | |
9983fa3c GS |
1089 | if (pat) { |
1090 | msv = vmess(pat, args); | |
1091 | if (PL_errors && SvCUR(PL_errors)) { | |
1092 | sv_catsv(PL_errors, msv); | |
1093 | message = SvPV(PL_errors, msglen); | |
1094 | SvCUR_set(PL_errors, 0); | |
1095 | } | |
1096 | else | |
1097 | message = SvPV(msv,msglen); | |
1098 | } | |
1099 | else { | |
1100 | message = Nullch; | |
1101 | msglen = 0; | |
5a844595 | 1102 | } |
5a844595 | 1103 | |
b900a521 JH |
1104 | DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", |
1105 | PTR2UV(thr), message)); | |
5a844595 | 1106 | |
3280af22 | 1107 | if (PL_diehook) { |
cea2e8a9 | 1108 | /* sv_2cv might call Perl_croak() */ |
3280af22 | 1109 | SV *olddiehook = PL_diehook; |
1738f5c4 | 1110 | ENTER; |
3280af22 NIS |
1111 | SAVESPTR(PL_diehook); |
1112 | PL_diehook = Nullsv; | |
20cec16a | 1113 | cv = sv_2cv(olddiehook, &stash, &gv, 0); |
1738f5c4 CS |
1114 | LEAVE; |
1115 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { | |
20cec16a | 1116 | dSP; |
774d564b | 1117 | SV *msg; |
1118 | ||
1119 | ENTER; | |
3a1f2dc9 | 1120 | save_re_context(); |
9983fa3c GS |
1121 | if (message) { |
1122 | msg = newSVpvn(message, msglen); | |
1123 | SvREADONLY_on(msg); | |
1124 | SAVEFREESV(msg); | |
1125 | } | |
1126 | else { | |
1127 | msg = ERRSV; | |
1128 | } | |
20cec16a | 1129 | |
e788e7d3 | 1130 | PUSHSTACKi(PERLSI_DIEHOOK); |
924508f0 | 1131 | PUSHMARK(SP); |
1738f5c4 | 1132 | XPUSHs(msg); |
20cec16a | 1133 | PUTBACK; |
864dbfa3 | 1134 | call_sv((SV*)cv, G_DISCARD); |
d3acc0f7 | 1135 | POPSTACK; |
774d564b | 1136 | LEAVE; |
20cec16a | 1137 | } |
748a9306 | 1138 | } |
3280af22 | 1139 | if (PL_in_eval) { |
06bf62c7 | 1140 | PL_restartop = die_where(message, msglen); |
6224f72b | 1141 | JMPENV_JUMP(3); |
a0d0e21e | 1142 | } |
84414e3e JH |
1143 | else if (!message) |
1144 | message = SvPVx(ERRSV, msglen); | |
1145 | ||
d175a3f0 GS |
1146 | { |
1147 | #ifdef USE_SFIO | |
1148 | /* SFIO can really mess with your errno */ | |
1149 | int e = errno; | |
1150 | #endif | |
bf49b057 GS |
1151 | PerlIO *serr = Perl_error_log; |
1152 | ||
be708cc0 | 1153 | PERL_WRITE_MSG_TO_CONSOLE(serr, message, msglen); |
bf49b057 | 1154 | (void)PerlIO_flush(serr); |
d175a3f0 GS |
1155 | #ifdef USE_SFIO |
1156 | errno = e; | |
1157 | #endif | |
1158 | } | |
f86702cc | 1159 | my_failure_exit(); |
a687059c LW |
1160 | } |
1161 | ||
c5be433b | 1162 | #if defined(PERL_IMPLICIT_CONTEXT) |
8990e307 | 1163 | void |
cea2e8a9 | 1164 | Perl_croak_nocontext(const char *pat, ...) |
a687059c | 1165 | { |
cea2e8a9 | 1166 | dTHX; |
a687059c | 1167 | va_list args; |
cea2e8a9 | 1168 | va_start(args, pat); |
c5be433b | 1169 | vcroak(pat, &args); |
cea2e8a9 GS |
1170 | /* NOTREACHED */ |
1171 | va_end(args); | |
1172 | } | |
1173 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
1174 | ||
954c1994 | 1175 | /* |
ccfc67b7 JH |
1176 | =head1 Warning and Dieing |
1177 | ||
954c1994 GS |
1178 | =for apidoc croak |
1179 | ||
9983fa3c GS |
1180 | This is the XSUB-writer's interface to Perl's C<die> function. |
1181 | Normally use this function the same way you use the C C<printf> | |
1182 | function. See C<warn>. | |
1183 | ||
1184 | If you want to throw an exception object, assign the object to | |
1185 | C<$@> and then pass C<Nullch> to croak(): | |
1186 | ||
1187 | errsv = get_sv("@", TRUE); | |
1188 | sv_setsv(errsv, exception_object); | |
1189 | croak(Nullch); | |
954c1994 GS |
1190 | |
1191 | =cut | |
1192 | */ | |
1193 | ||
cea2e8a9 GS |
1194 | void |
1195 | Perl_croak(pTHX_ const char *pat, ...) | |
1196 | { | |
1197 | va_list args; | |
1198 | va_start(args, pat); | |
c5be433b | 1199 | vcroak(pat, &args); |
cea2e8a9 GS |
1200 | /* NOTREACHED */ |
1201 | va_end(args); | |
1202 | } | |
1203 | ||
c5be433b GS |
1204 | void |
1205 | Perl_vwarn(pTHX_ const char* pat, va_list *args) | |
cea2e8a9 | 1206 | { |
de3bb511 | 1207 | char *message; |
748a9306 LW |
1208 | HV *stash; |
1209 | GV *gv; | |
1210 | CV *cv; | |
06bf62c7 GS |
1211 | SV *msv; |
1212 | STRLEN msglen; | |
87582a92 AT |
1213 | IO *io; |
1214 | MAGIC *mg; | |
a687059c | 1215 | |
5a844595 | 1216 | msv = vmess(pat, args); |
06bf62c7 | 1217 | message = SvPV(msv, msglen); |
a687059c | 1218 | |
3280af22 | 1219 | if (PL_warnhook) { |
cea2e8a9 | 1220 | /* sv_2cv might call Perl_warn() */ |
3280af22 | 1221 | SV *oldwarnhook = PL_warnhook; |
1738f5c4 | 1222 | ENTER; |
3280af22 NIS |
1223 | SAVESPTR(PL_warnhook); |
1224 | PL_warnhook = Nullsv; | |
20cec16a | 1225 | cv = sv_2cv(oldwarnhook, &stash, &gv, 0); |
1738f5c4 CS |
1226 | LEAVE; |
1227 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { | |
20cec16a | 1228 | dSP; |
774d564b | 1229 | SV *msg; |
1230 | ||
1231 | ENTER; | |
3a1f2dc9 | 1232 | save_re_context(); |
06bf62c7 | 1233 | msg = newSVpvn(message, msglen); |
774d564b | 1234 | SvREADONLY_on(msg); |
1235 | SAVEFREESV(msg); | |
1236 | ||
e788e7d3 | 1237 | PUSHSTACKi(PERLSI_WARNHOOK); |
924508f0 | 1238 | PUSHMARK(SP); |
774d564b | 1239 | XPUSHs(msg); |
20cec16a | 1240 | PUTBACK; |
864dbfa3 | 1241 | call_sv((SV*)cv, G_DISCARD); |
d3acc0f7 | 1242 | POPSTACK; |
774d564b | 1243 | LEAVE; |
20cec16a | 1244 | return; |
1245 | } | |
748a9306 | 1246 | } |
87582a92 AT |
1247 | |
1248 | /* if STDERR is tied, use it instead */ | |
1249 | if (PL_stderrgv && (io = GvIOp(PL_stderrgv)) | |
1250 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) { | |
1251 | dSP; ENTER; | |
1252 | PUSHMARK(SP); | |
1253 | XPUSHs(SvTIED_obj((SV*)io, mg)); | |
1254 | XPUSHs(sv_2mortal(newSVpvn(message, msglen))); | |
1255 | PUTBACK; | |
1256 | call_method("PRINT", G_SCALAR); | |
1257 | LEAVE; | |
1258 | return; | |
1259 | } | |
1260 | ||
bf49b057 GS |
1261 | { |
1262 | PerlIO *serr = Perl_error_log; | |
1263 | ||
be708cc0 | 1264 | PERL_WRITE_MSG_TO_CONSOLE(serr, message, msglen); |
bf49b057 GS |
1265 | (void)PerlIO_flush(serr); |
1266 | } | |
a687059c | 1267 | } |
8d063cd8 | 1268 | |
c5be433b | 1269 | #if defined(PERL_IMPLICIT_CONTEXT) |
cea2e8a9 GS |
1270 | void |
1271 | Perl_warn_nocontext(const char *pat, ...) | |
1272 | { | |
1273 | dTHX; | |
1274 | va_list args; | |
1275 | va_start(args, pat); | |
c5be433b | 1276 | vwarn(pat, &args); |
cea2e8a9 GS |
1277 | va_end(args); |
1278 | } | |
1279 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
1280 | ||
954c1994 GS |
1281 | /* |
1282 | =for apidoc warn | |
1283 | ||
1284 | This is the XSUB-writer's interface to Perl's C<warn> function. Use this | |
1285 | function the same way you use the C C<printf> function. See | |
1286 | C<croak>. | |
1287 | ||
1288 | =cut | |
1289 | */ | |
1290 | ||
cea2e8a9 GS |
1291 | void |
1292 | Perl_warn(pTHX_ const char *pat, ...) | |
1293 | { | |
1294 | va_list args; | |
1295 | va_start(args, pat); | |
c5be433b | 1296 | vwarn(pat, &args); |
cea2e8a9 GS |
1297 | va_end(args); |
1298 | } | |
1299 | ||
c5be433b GS |
1300 | #if defined(PERL_IMPLICIT_CONTEXT) |
1301 | void | |
1302 | Perl_warner_nocontext(U32 err, const char *pat, ...) | |
1303 | { | |
1304 | dTHX; | |
1305 | va_list args; | |
1306 | va_start(args, pat); | |
1307 | vwarner(err, pat, &args); | |
1308 | va_end(args); | |
1309 | } | |
1310 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
1311 | ||
599cee73 | 1312 | void |
864dbfa3 | 1313 | Perl_warner(pTHX_ U32 err, const char* pat,...) |
599cee73 PM |
1314 | { |
1315 | va_list args; | |
c5be433b GS |
1316 | va_start(args, pat); |
1317 | vwarner(err, pat, &args); | |
1318 | va_end(args); | |
1319 | } | |
1320 | ||
1321 | void | |
1322 | Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args) | |
1323 | { | |
599cee73 PM |
1324 | char *message; |
1325 | HV *stash; | |
1326 | GV *gv; | |
1327 | CV *cv; | |
06bf62c7 GS |
1328 | SV *msv; |
1329 | STRLEN msglen; | |
599cee73 | 1330 | |
5a844595 | 1331 | msv = vmess(pat, args); |
06bf62c7 | 1332 | message = SvPV(msv, msglen); |
599cee73 PM |
1333 | |
1334 | if (ckDEAD(err)) { | |
3aed30dc HS |
1335 | if (PL_diehook) { |
1336 | /* sv_2cv might call Perl_croak() */ | |
1337 | SV *olddiehook = PL_diehook; | |
1338 | ENTER; | |
1339 | SAVESPTR(PL_diehook); | |
1340 | PL_diehook = Nullsv; | |
1341 | cv = sv_2cv(olddiehook, &stash, &gv, 0); | |
1342 | LEAVE; | |
1343 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { | |
1344 | dSP; | |
1345 | SV *msg; | |
1346 | ||
1347 | ENTER; | |
3a1f2dc9 | 1348 | save_re_context(); |
3aed30dc HS |
1349 | msg = newSVpvn(message, msglen); |
1350 | SvREADONLY_on(msg); | |
1351 | SAVEFREESV(msg); | |
a1d180c4 | 1352 | |
3a1f2dc9 | 1353 | PUSHSTACKi(PERLSI_DIEHOOK); |
3aed30dc HS |
1354 | PUSHMARK(sp); |
1355 | XPUSHs(msg); | |
1356 | PUTBACK; | |
1357 | call_sv((SV*)cv, G_DISCARD); | |
3a1f2dc9 | 1358 | POPSTACK; |
3aed30dc HS |
1359 | LEAVE; |
1360 | } | |
1361 | } | |
1362 | if (PL_in_eval) { | |
1363 | PL_restartop = die_where(message, msglen); | |
1364 | JMPENV_JUMP(3); | |
1365 | } | |
bf49b057 GS |
1366 | { |
1367 | PerlIO *serr = Perl_error_log; | |
be708cc0 | 1368 | PERL_WRITE_MSG_TO_CONSOLE(serr, message, msglen); |
bf49b057 GS |
1369 | (void)PerlIO_flush(serr); |
1370 | } | |
3aed30dc | 1371 | my_failure_exit(); |
599cee73 PM |
1372 | } |
1373 | else { | |
3aed30dc HS |
1374 | if (PL_warnhook) { |
1375 | /* sv_2cv might call Perl_warn() */ | |
1376 | SV *oldwarnhook = PL_warnhook; | |
1377 | ENTER; | |
1378 | SAVESPTR(PL_warnhook); | |
1379 | PL_warnhook = Nullsv; | |
1380 | cv = sv_2cv(oldwarnhook, &stash, &gv, 0); | |
3a1f2dc9 | 1381 | LEAVE; |
3aed30dc HS |
1382 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { |
1383 | dSP; | |
1384 | SV *msg; | |
a1d180c4 | 1385 | |
3aed30dc | 1386 | ENTER; |
3a1f2dc9 | 1387 | save_re_context(); |
3aed30dc HS |
1388 | msg = newSVpvn(message, msglen); |
1389 | SvREADONLY_on(msg); | |
1390 | SAVEFREESV(msg); | |
a1d180c4 | 1391 | |
3a1f2dc9 | 1392 | PUSHSTACKi(PERLSI_WARNHOOK); |
3aed30dc HS |
1393 | PUSHMARK(sp); |
1394 | XPUSHs(msg); | |
1395 | PUTBACK; | |
1396 | call_sv((SV*)cv, G_DISCARD); | |
3a1f2dc9 | 1397 | POPSTACK; |
3aed30dc HS |
1398 | LEAVE; |
1399 | return; | |
1400 | } | |
1401 | } | |
bf49b057 GS |
1402 | { |
1403 | PerlIO *serr = Perl_error_log; | |
be708cc0 | 1404 | PERL_WRITE_MSG_TO_CONSOLE(serr, message, msglen); |
bf49b057 GS |
1405 | (void)PerlIO_flush(serr); |
1406 | } | |
599cee73 PM |
1407 | } |
1408 | } | |
1409 | ||
e6587932 DM |
1410 | /* since we've already done strlen() for both nam and val |
1411 | * we can use that info to make things faster than | |
1412 | * sprintf(s, "%s=%s", nam, val) | |
1413 | */ | |
1414 | #define my_setenv_format(s, nam, nlen, val, vlen) \ | |
1415 | Copy(nam, s, nlen, char); \ | |
1416 | *(s+nlen) = '='; \ | |
1417 | Copy(val, s+(nlen+1), vlen, char); \ | |
1418 | *(s+(nlen+1+vlen)) = '\0' | |
1419 | ||
13b6e58c | 1420 | #ifdef USE_ENVIRON_ARRAY |
eccd403f | 1421 | /* VMS' my_setenv() is in vms.c */ |
2986a63f | 1422 | #if !defined(WIN32) && !defined(NETWARE) |
8d063cd8 | 1423 | void |
864dbfa3 | 1424 | Perl_my_setenv(pTHX_ char *nam, char *val) |
8d063cd8 | 1425 | { |
4efc5df6 GS |
1426 | #ifdef USE_ITHREADS |
1427 | /* only parent thread can modify process environment */ | |
1428 | if (PL_curinterp == aTHX) | |
1429 | #endif | |
1430 | { | |
f2517201 GS |
1431 | #ifndef PERL_USE_SAFE_PUTENV |
1432 | /* most putenv()s leak, so we manipulate environ directly */ | |
79072805 | 1433 | register I32 i=setenv_getix(nam); /* where does it go? */ |
e6587932 | 1434 | int nlen, vlen; |
8d063cd8 | 1435 | |
3280af22 | 1436 | if (environ == PL_origenviron) { /* need we copy environment? */ |
79072805 LW |
1437 | I32 j; |
1438 | I32 max; | |
fe14fcc3 LW |
1439 | char **tmpenv; |
1440 | ||
de3bb511 | 1441 | /*SUPPRESS 530*/ |
fe14fcc3 | 1442 | for (max = i; environ[max]; max++) ; |
f2517201 GS |
1443 | tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*)); |
1444 | for (j=0; j<max; j++) { /* copy environment */ | |
3aed30dc HS |
1445 | int len = strlen(environ[j]); |
1446 | tmpenv[j] = (char*)safesysmalloc((len+1)*sizeof(char)); | |
1447 | Copy(environ[j], tmpenv[j], len+1, char); | |
f2517201 | 1448 | } |
fe14fcc3 LW |
1449 | tmpenv[max] = Nullch; |
1450 | environ = tmpenv; /* tell exec where it is now */ | |
1451 | } | |
a687059c | 1452 | if (!val) { |
f2517201 | 1453 | safesysfree(environ[i]); |
a687059c LW |
1454 | while (environ[i]) { |
1455 | environ[i] = environ[i+1]; | |
1456 | i++; | |
1457 | } | |
1458 | return; | |
1459 | } | |
8d063cd8 | 1460 | if (!environ[i]) { /* does not exist yet */ |
f2517201 | 1461 | environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*)); |
8d063cd8 LW |
1462 | environ[i+1] = Nullch; /* make sure it's null terminated */ |
1463 | } | |
fe14fcc3 | 1464 | else |
f2517201 | 1465 | safesysfree(environ[i]); |
e6587932 DM |
1466 | nlen = strlen(nam); |
1467 | vlen = strlen(val); | |
f2517201 | 1468 | |
e6587932 DM |
1469 | environ[i] = (char*)safesysmalloc((nlen+vlen+2) * sizeof(char)); |
1470 | /* all that work just for this */ | |
1471 | my_setenv_format(environ[i], nam, nlen, val, vlen); | |
f2517201 GS |
1472 | |
1473 | #else /* PERL_USE_SAFE_PUTENV */ | |
eccd403f | 1474 | # if defined(__CYGWIN__) || defined( EPOC) |
47dafe4d EF |
1475 | setenv(nam, val, 1); |
1476 | # else | |
f2517201 | 1477 | char *new_env; |
e6587932 DM |
1478 | int nlen = strlen(nam), vlen; |
1479 | if (!val) { | |
3aed30dc | 1480 | val = ""; |
e6587932 DM |
1481 | } |
1482 | vlen = strlen(val); | |
1483 | new_env = (char*)safesysmalloc((nlen + vlen + 2) * sizeof(char)); | |
1484 | /* all that work just for this */ | |
1485 | my_setenv_format(new_env, nam, nlen, val, vlen); | |
f2517201 | 1486 | (void)putenv(new_env); |
47dafe4d | 1487 | # endif /* __CYGWIN__ */ |
f2517201 | 1488 | #endif /* PERL_USE_SAFE_PUTENV */ |
4efc5df6 | 1489 | } |
8d063cd8 LW |
1490 | } |
1491 | ||
2986a63f | 1492 | #else /* WIN32 || NETWARE */ |
68dc0745 | 1493 | |
1494 | void | |
864dbfa3 | 1495 | Perl_my_setenv(pTHX_ char *nam,char *val) |
68dc0745 | 1496 | { |
ac5c734f | 1497 | register char *envstr; |
e6587932 DM |
1498 | int nlen = strlen(nam), vlen; |
1499 | ||
ac5c734f GS |
1500 | if (!val) { |
1501 | val = ""; | |
1502 | } | |
e6587932 DM |
1503 | vlen = strlen(val); |
1504 | New(904, envstr, nlen+vlen+2, char); | |
1505 | my_setenv_format(envstr, nam, nlen, val, vlen); | |
ac5c734f GS |
1506 | (void)PerlEnv_putenv(envstr); |
1507 | Safefree(envstr); | |
3e3baf6d TB |
1508 | } |
1509 | ||
2986a63f | 1510 | #endif /* WIN32 || NETWARE */ |
3e3baf6d TB |
1511 | |
1512 | I32 | |
864dbfa3 | 1513 | Perl_setenv_getix(pTHX_ char *nam) |
3e3baf6d TB |
1514 | { |
1515 | register I32 i, len = strlen(nam); | |
1516 | ||
1517 | for (i = 0; environ[i]; i++) { | |
1518 | if ( | |
1519 | #ifdef WIN32 | |
1520 | strnicmp(environ[i],nam,len) == 0 | |
1521 | #else | |
1522 | strnEQ(environ[i],nam,len) | |
1523 | #endif | |
1524 | && environ[i][len] == '=') | |
1525 | break; /* strnEQ must come first to avoid */ | |
1526 | } /* potential SEGV's */ | |
1527 | return i; | |
68dc0745 | 1528 | } |
1529 | ||
ed79a026 | 1530 | #endif /* !VMS && !EPOC*/ |
378cc40b | 1531 | |
16d20bd9 | 1532 | #ifdef UNLINK_ALL_VERSIONS |
79072805 | 1533 | I32 |
864dbfa3 | 1534 | Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */ |
378cc40b | 1535 | { |
79072805 | 1536 | I32 i; |
378cc40b | 1537 | |
6ad3d225 | 1538 | for (i = 0; PerlLIO_unlink(f) >= 0; i++) ; |
378cc40b LW |
1539 | return i ? 0 : -1; |
1540 | } | |
1541 | #endif | |
1542 | ||
7a3f2258 | 1543 | /* this is a drop-in replacement for bcopy() */ |
2253333f | 1544 | #if (!defined(HAS_MEMCPY) && !defined(HAS_BCOPY)) || (!defined(HAS_MEMMOVE) && !defined(HAS_SAFE_MEMCPY) && !defined(HAS_SAFE_BCOPY)) |
378cc40b | 1545 | char * |
7a3f2258 | 1546 | Perl_my_bcopy(register const char *from,register char *to,register I32 len) |
378cc40b LW |
1547 | { |
1548 | char *retval = to; | |
1549 | ||
7c0587c8 LW |
1550 | if (from - to >= 0) { |
1551 | while (len--) | |
1552 | *to++ = *from++; | |
1553 | } | |
1554 | else { | |
1555 | to += len; | |
1556 | from += len; | |
1557 | while (len--) | |
faf8582f | 1558 | *(--to) = *(--from); |
7c0587c8 | 1559 | } |
378cc40b LW |
1560 | return retval; |
1561 | } | |
ffed7fef | 1562 | #endif |
378cc40b | 1563 | |
7a3f2258 | 1564 | /* this is a drop-in replacement for memset() */ |
fc36a67e | 1565 | #ifndef HAS_MEMSET |
1566 | void * | |
7a3f2258 | 1567 | Perl_my_memset(register char *loc, register I32 ch, register I32 len) |
fc36a67e | 1568 | { |
1569 | char *retval = loc; | |
1570 | ||
1571 | while (len--) | |
1572 | *loc++ = ch; | |
1573 | return retval; | |
1574 | } | |
1575 | #endif | |
1576 | ||
7a3f2258 | 1577 | /* this is a drop-in replacement for bzero() */ |
7c0587c8 | 1578 | #if !defined(HAS_BZERO) && !defined(HAS_MEMSET) |
378cc40b | 1579 | char * |
7a3f2258 | 1580 | Perl_my_bzero(register char *loc, register I32 len) |
378cc40b LW |
1581 | { |
1582 | char *retval = loc; | |
1583 | ||
1584 | while (len--) | |
1585 | *loc++ = 0; | |
1586 | return retval; | |
1587 | } | |
1588 | #endif | |
7c0587c8 | 1589 | |
7a3f2258 | 1590 | /* this is a drop-in replacement for memcmp() */ |
36477c24 | 1591 | #if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP) |
79072805 | 1592 | I32 |
7a3f2258 | 1593 | Perl_my_memcmp(const char *s1, const char *s2, register I32 len) |
7c0587c8 | 1594 | { |
36477c24 | 1595 | register U8 *a = (U8 *)s1; |
1596 | register U8 *b = (U8 *)s2; | |
79072805 | 1597 | register I32 tmp; |
7c0587c8 LW |
1598 | |
1599 | while (len--) { | |
36477c24 | 1600 | if (tmp = *a++ - *b++) |
7c0587c8 LW |
1601 | return tmp; |
1602 | } | |
1603 | return 0; | |
1604 | } | |
36477c24 | 1605 | #endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */ |
a687059c | 1606 | |
fe14fcc3 | 1607 | #ifndef HAS_VPRINTF |
a687059c | 1608 | |
85e6fe83 | 1609 | #ifdef USE_CHAR_VSPRINTF |
a687059c LW |
1610 | char * |
1611 | #else | |
1612 | int | |
1613 | #endif | |
08105a92 | 1614 | vsprintf(char *dest, const char *pat, char *args) |
a687059c LW |
1615 | { |
1616 | FILE fakebuf; | |
1617 | ||
1618 | fakebuf._ptr = dest; | |
1619 | fakebuf._cnt = 32767; | |
35c8bce7 LW |
1620 | #ifndef _IOSTRG |
1621 | #define _IOSTRG 0 | |
1622 | #endif | |
a687059c LW |
1623 | fakebuf._flag = _IOWRT|_IOSTRG; |
1624 | _doprnt(pat, args, &fakebuf); /* what a kludge */ | |
1625 | (void)putc('\0', &fakebuf); | |
85e6fe83 | 1626 | #ifdef USE_CHAR_VSPRINTF |
a687059c LW |
1627 | return(dest); |
1628 | #else | |
1629 | return 0; /* perl doesn't use return value */ | |
1630 | #endif | |
1631 | } | |
1632 | ||
fe14fcc3 | 1633 | #endif /* HAS_VPRINTF */ |
a687059c LW |
1634 | |
1635 | #ifdef MYSWAP | |
ffed7fef | 1636 | #if BYTEORDER != 0x4321 |
a687059c | 1637 | short |
864dbfa3 | 1638 | Perl_my_swap(pTHX_ short s) |
a687059c LW |
1639 | { |
1640 | #if (BYTEORDER & 1) == 0 | |
1641 | short result; | |
1642 | ||
1643 | result = ((s & 255) << 8) + ((s >> 8) & 255); | |
1644 | return result; | |
1645 | #else | |
1646 | return s; | |
1647 | #endif | |
1648 | } | |
1649 | ||
1650 | long | |
864dbfa3 | 1651 | Perl_my_htonl(pTHX_ long l) |
a687059c LW |
1652 | { |
1653 | union { | |
1654 | long result; | |
ffed7fef | 1655 | char c[sizeof(long)]; |
a687059c LW |
1656 | } u; |
1657 | ||
ffed7fef | 1658 | #if BYTEORDER == 0x1234 |
a687059c LW |
1659 | u.c[0] = (l >> 24) & 255; |
1660 | u.c[1] = (l >> 16) & 255; | |
1661 | u.c[2] = (l >> 8) & 255; | |
1662 | u.c[3] = l & 255; | |
1663 | return u.result; | |
1664 | #else | |
ffed7fef | 1665 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
cea2e8a9 | 1666 | Perl_croak(aTHX_ "Unknown BYTEORDER\n"); |
a687059c | 1667 | #else |
79072805 LW |
1668 | register I32 o; |
1669 | register I32 s; | |
a687059c | 1670 | |
ffed7fef LW |
1671 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1672 | u.c[o & 0xf] = (l >> s) & 255; | |
a687059c LW |
1673 | } |
1674 | return u.result; | |
1675 | #endif | |
1676 | #endif | |
1677 | } | |
1678 | ||
1679 | long | |
864dbfa3 | 1680 | Perl_my_ntohl(pTHX_ long l) |
a687059c LW |
1681 | { |
1682 | union { | |
1683 | long l; | |
ffed7fef | 1684 | char c[sizeof(long)]; |
a687059c LW |
1685 | } u; |
1686 | ||
ffed7fef | 1687 | #if BYTEORDER == 0x1234 |
a687059c LW |
1688 | u.c[0] = (l >> 24) & 255; |
1689 | u.c[1] = (l >> 16) & 255; | |
1690 | u.c[2] = (l >> 8) & 255; | |
1691 | u.c[3] = l & 255; | |
1692 | return u.l; | |
1693 | #else | |
ffed7fef | 1694 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
cea2e8a9 | 1695 | Perl_croak(aTHX_ "Unknown BYTEORDER\n"); |
a687059c | 1696 | #else |
79072805 LW |
1697 | register I32 o; |
1698 | register I32 s; | |
a687059c LW |
1699 | |
1700 | u.l = l; | |
1701 | l = 0; | |
ffed7fef LW |
1702 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1703 | l |= (u.c[o & 0xf] & 255) << s; | |
a687059c LW |
1704 | } |
1705 | return l; | |
1706 | #endif | |
1707 | #endif | |
1708 | } | |
1709 | ||
ffed7fef | 1710 | #endif /* BYTEORDER != 0x4321 */ |
988174c1 LW |
1711 | #endif /* MYSWAP */ |
1712 | ||
1713 | /* | |
1714 | * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'. | |
1715 | * If these functions are defined, | |
1716 | * the BYTEORDER is neither 0x1234 nor 0x4321. | |
1717 | * However, this is not assumed. | |
1718 | * -DWS | |
1719 | */ | |
1720 | ||
1721 | #define HTOV(name,type) \ | |
1722 | type \ | |
ba106d47 | 1723 | name (register type n) \ |
988174c1 LW |
1724 | { \ |
1725 | union { \ | |
1726 | type value; \ | |
1727 | char c[sizeof(type)]; \ | |
1728 | } u; \ | |
79072805 LW |
1729 | register I32 i; \ |
1730 | register I32 s; \ | |
988174c1 LW |
1731 | for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \ |
1732 | u.c[i] = (n >> s) & 0xFF; \ | |
1733 | } \ | |
1734 | return u.value; \ | |
1735 | } | |
1736 | ||
1737 | #define VTOH(name,type) \ | |
1738 | type \ | |
ba106d47 | 1739 | name (register type n) \ |
988174c1 LW |
1740 | { \ |
1741 | union { \ | |
1742 | type value; \ | |
1743 | char c[sizeof(type)]; \ | |
1744 | } u; \ | |
79072805 LW |
1745 | register I32 i; \ |
1746 | register I32 s; \ | |
988174c1 LW |
1747 | u.value = n; \ |
1748 | n = 0; \ | |
1749 | for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \ | |
1750 | n += (u.c[i] & 0xFF) << s; \ | |
1751 | } \ | |
1752 | return n; \ | |
1753 | } | |
1754 | ||
1755 | #if defined(HAS_HTOVS) && !defined(htovs) | |
1756 | HTOV(htovs,short) | |
1757 | #endif | |
1758 | #if defined(HAS_HTOVL) && !defined(htovl) | |
1759 | HTOV(htovl,long) | |
1760 | #endif | |
1761 | #if defined(HAS_VTOHS) && !defined(vtohs) | |
1762 | VTOH(vtohs,short) | |
1763 | #endif | |
1764 | #if defined(HAS_VTOHL) && !defined(vtohl) | |
1765 | VTOH(vtohl,long) | |
1766 | #endif | |
a687059c | 1767 | |
4a7d1889 NIS |
1768 | PerlIO * |
1769 | Perl_my_popen_list(pTHX_ char *mode, int n, SV **args) | |
1770 | { | |
2986a63f | 1771 | #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(OS2) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) && !defined(NETWARE) |
1f852d0d NIS |
1772 | int p[2]; |
1773 | register I32 This, that; | |
1774 | register Pid_t pid; | |
1775 | SV *sv; | |
1776 | I32 did_pipes = 0; | |
1777 | int pp[2]; | |
1778 | ||
1779 | PERL_FLUSHALL_FOR_CHILD; | |
1780 | This = (*mode == 'w'); | |
1781 | that = !This; | |
1782 | if (PL_tainting) { | |
1783 | taint_env(); | |
1784 | taint_proper("Insecure %s%s", "EXEC"); | |
1785 | } | |
1786 | if (PerlProc_pipe(p) < 0) | |
1787 | return Nullfp; | |
1788 | /* Try for another pipe pair for error return */ | |
1789 | if (PerlProc_pipe(pp) >= 0) | |
1790 | did_pipes = 1; | |
52e18b1f | 1791 | while ((pid = PerlProc_fork()) < 0) { |
1f852d0d NIS |
1792 | if (errno != EAGAIN) { |
1793 | PerlLIO_close(p[This]); | |
4e6dfe71 | 1794 | PerlLIO_close(p[that]); |
1f852d0d NIS |
1795 | if (did_pipes) { |
1796 | PerlLIO_close(pp[0]); | |
1797 | PerlLIO_close(pp[1]); | |
1798 | } | |
1799 | return Nullfp; | |
1800 | } | |
1801 | sleep(5); | |
1802 | } | |
1803 | if (pid == 0) { | |
1804 | /* Child */ | |
1f852d0d NIS |
1805 | #undef THIS |
1806 | #undef THAT | |
1807 | #define THIS that | |
1808 | #define THAT This | |
1f852d0d NIS |
1809 | /* Close parent's end of error status pipe (if any) */ |
1810 | if (did_pipes) { | |
1811 | PerlLIO_close(pp[0]); | |
1812 | #if defined(HAS_FCNTL) && defined(F_SETFD) | |
1813 | /* Close error pipe automatically if exec works */ | |
1814 | fcntl(pp[1], F_SETFD, FD_CLOEXEC); | |
1815 | #endif | |
1816 | } | |
1817 | /* Now dup our end of _the_ pipe to right position */ | |
1818 | if (p[THIS] != (*mode == 'r')) { | |
1819 | PerlLIO_dup2(p[THIS], *mode == 'r'); | |
1820 | PerlLIO_close(p[THIS]); | |
4e6dfe71 GS |
1821 | if (p[THAT] != (*mode == 'r')) /* if dup2() didn't close it */ |
1822 | PerlLIO_close(p[THAT]); /* close parent's end of _the_ pipe */ | |
1f852d0d | 1823 | } |
4e6dfe71 GS |
1824 | else |
1825 | PerlLIO_close(p[THAT]); /* close parent's end of _the_ pipe */ | |
1f852d0d NIS |
1826 | #if !defined(HAS_FCNTL) || !defined(F_SETFD) |
1827 | /* No automatic close - do it by hand */ | |
b7953727 JH |
1828 | # ifndef NOFILE |
1829 | # define NOFILE 20 | |
1830 | # endif | |
a080fe3d NIS |
1831 | { |
1832 | int fd; | |
1833 | ||
1834 | for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++) { | |
3aed30dc | 1835 | if (fd != pp[1]) |
a080fe3d NIS |
1836 | PerlLIO_close(fd); |
1837 | } | |
1f852d0d NIS |
1838 | } |
1839 | #endif | |
1840 | do_aexec5(Nullsv, args-1, args-1+n, pp[1], did_pipes); | |
1841 | PerlProc__exit(1); | |
1842 | #undef THIS | |
1843 | #undef THAT | |
1844 | } | |
1845 | /* Parent */ | |
52e18b1f | 1846 | do_execfree(); /* free any memory malloced by child on fork */ |
1f852d0d NIS |
1847 | if (did_pipes) |
1848 | PerlLIO_close(pp[1]); | |
1849 | /* Keep the lower of the two fd numbers */ | |
1850 | if (p[that] < p[This]) { | |
1851 | PerlLIO_dup2(p[This], p[that]); | |
1852 | PerlLIO_close(p[This]); | |
1853 | p[This] = p[that]; | |
1854 | } | |
4e6dfe71 GS |
1855 | else |
1856 | PerlLIO_close(p[that]); /* close child's end of pipe */ | |
1857 | ||
1f852d0d NIS |
1858 | LOCK_FDPID_MUTEX; |
1859 | sv = *av_fetch(PL_fdpid,p[This],TRUE); | |
1860 | UNLOCK_FDPID_MUTEX; | |
1861 | (void)SvUPGRADE(sv,SVt_IV); | |
1862 | SvIVX(sv) = pid; | |
1863 | PL_forkprocess = pid; | |
1864 | /* If we managed to get status pipe check for exec fail */ | |
1865 | if (did_pipes && pid > 0) { | |
1866 | int errkid; | |
1867 | int n = 0, n1; | |
1868 | ||
1869 | while (n < sizeof(int)) { | |
1870 | n1 = PerlLIO_read(pp[0], | |
1871 | (void*)(((char*)&errkid)+n), | |
1872 | (sizeof(int)) - n); | |
1873 | if (n1 <= 0) | |
1874 | break; | |
1875 | n += n1; | |
1876 | } | |
1877 | PerlLIO_close(pp[0]); | |
1878 | did_pipes = 0; | |
1879 | if (n) { /* Error */ | |
1880 | int pid2, status; | |
8c51524e | 1881 | PerlLIO_close(p[This]); |
1f852d0d NIS |
1882 | if (n != sizeof(int)) |
1883 | Perl_croak(aTHX_ "panic: kid popen errno read"); | |
1884 | do { | |
1885 | pid2 = wait4pid(pid, &status, 0); | |
1886 | } while (pid2 == -1 && errno == EINTR); | |
1887 | errno = errkid; /* Propagate errno from kid */ | |
1888 | return Nullfp; | |
1889 | } | |
1890 | } | |
1891 | if (did_pipes) | |
1892 | PerlLIO_close(pp[0]); | |
1893 | return PerlIO_fdopen(p[This], mode); | |
1894 | #else | |
4a7d1889 NIS |
1895 | Perl_croak(aTHX_ "List form of piped open not implemented"); |
1896 | return (PerlIO *) NULL; | |
1f852d0d | 1897 | #endif |
4a7d1889 NIS |
1898 | } |
1899 | ||
5f05dabc | 1900 | /* VMS' my_popen() is in VMS.c, same with OS/2. */ |
cd39f2b6 | 1901 | #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) |
760ac839 | 1902 | PerlIO * |
864dbfa3 | 1903 | Perl_my_popen(pTHX_ char *cmd, char *mode) |
a687059c LW |
1904 | { |
1905 | int p[2]; | |
8ac85365 | 1906 | register I32 This, that; |
d8a83dd3 | 1907 | register Pid_t pid; |
79072805 | 1908 | SV *sv; |
1738f5c4 | 1909 | I32 doexec = strNE(cmd,"-"); |
e446cec8 IZ |
1910 | I32 did_pipes = 0; |
1911 | int pp[2]; | |
a687059c | 1912 | |
45bc9206 | 1913 | PERL_FLUSHALL_FOR_CHILD; |
ddcf38b7 IZ |
1914 | #ifdef OS2 |
1915 | if (doexec) { | |
23da6c43 | 1916 | return my_syspopen(aTHX_ cmd,mode); |
ddcf38b7 | 1917 | } |
a1d180c4 | 1918 | #endif |
8ac85365 NIS |
1919 | This = (*mode == 'w'); |
1920 | that = !This; | |
3280af22 | 1921 | if (doexec && PL_tainting) { |
bbce6d69 | 1922 | taint_env(); |
1923 | taint_proper("Insecure %s%s", "EXEC"); | |
d48672a2 | 1924 | } |
c2267164 IZ |
1925 | if (PerlProc_pipe(p) < 0) |
1926 | return Nullfp; | |
e446cec8 IZ |
1927 | if (doexec && PerlProc_pipe(pp) >= 0) |
1928 | did_pipes = 1; | |
52e18b1f | 1929 | while ((pid = PerlProc_fork()) < 0) { |
a687059c | 1930 | if (errno != EAGAIN) { |
6ad3d225 | 1931 | PerlLIO_close(p[This]); |
b5ac89c3 | 1932 | PerlLIO_close(p[that]); |
e446cec8 IZ |
1933 | if (did_pipes) { |
1934 | PerlLIO_close(pp[0]); | |
1935 | PerlLIO_close(pp[1]); | |
1936 | } | |
a687059c | 1937 | if (!doexec) |
cea2e8a9 | 1938 | Perl_croak(aTHX_ "Can't fork"); |
a687059c LW |
1939 | return Nullfp; |
1940 | } | |
1941 | sleep(5); | |
1942 | } | |
1943 | if (pid == 0) { | |
79072805 LW |
1944 | GV* tmpgv; |
1945 | ||
30ac6d9b GS |
1946 | #undef THIS |
1947 | #undef THAT | |
a687059c | 1948 | #define THIS that |
8ac85365 | 1949 | #define THAT This |
e446cec8 IZ |
1950 | if (did_pipes) { |
1951 | PerlLIO_close(pp[0]); | |
1952 | #if defined(HAS_FCNTL) && defined(F_SETFD) | |
1953 | fcntl(pp[1], F_SETFD, FD_CLOEXEC); | |
1954 | #endif | |
1955 | } | |
a687059c | 1956 | if (p[THIS] != (*mode == 'r')) { |
6ad3d225 GS |
1957 | PerlLIO_dup2(p[THIS], *mode == 'r'); |
1958 | PerlLIO_close(p[THIS]); | |
b5ac89c3 NIS |
1959 | if (p[THAT] != (*mode == 'r')) /* if dup2() didn't close it */ |
1960 | PerlLIO_close(p[THAT]); | |
a687059c | 1961 | } |
b5ac89c3 NIS |
1962 | else |
1963 | PerlLIO_close(p[THAT]); | |
4435c477 | 1964 | #ifndef OS2 |
a687059c | 1965 | if (doexec) { |
a0d0e21e | 1966 | #if !defined(HAS_FCNTL) || !defined(F_SETFD) |
ae986130 LW |
1967 | int fd; |
1968 | ||
1969 | #ifndef NOFILE | |
1970 | #define NOFILE 20 | |
1971 | #endif | |
a080fe3d | 1972 | { |
3aed30dc | 1973 | int fd; |
a080fe3d NIS |
1974 | |
1975 | for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++) | |
1976 | if (fd != pp[1]) | |
3aed30dc | 1977 | PerlLIO_close(fd); |
a080fe3d | 1978 | } |
ae986130 | 1979 | #endif |
a080fe3d NIS |
1980 | /* may or may not use the shell */ |
1981 | do_exec3(cmd, pp[1], did_pipes); | |
6ad3d225 | 1982 | PerlProc__exit(1); |
a687059c | 1983 | } |
4435c477 | 1984 | #endif /* defined OS2 */ |
de3bb511 | 1985 | /*SUPPRESS 560*/ |
306196c3 | 1986 | if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) { |
4d76a344 | 1987 | SvREADONLY_off(GvSV(tmpgv)); |
7766f137 | 1988 | sv_setiv(GvSV(tmpgv), PerlProc_getpid()); |
4d76a344 RGS |
1989 | SvREADONLY_on(GvSV(tmpgv)); |
1990 | } | |
1991 | #ifdef THREADS_HAVE_PIDS | |
1992 | PL_ppid = (IV)getppid(); | |
1993 | #endif | |
3280af22 NIS |
1994 | PL_forkprocess = 0; |
1995 | hv_clear(PL_pidstatus); /* we have no children */ | |
a687059c LW |
1996 | return Nullfp; |
1997 | #undef THIS | |
1998 | #undef THAT | |
1999 | } | |
b5ac89c3 | 2000 | do_execfree(); /* free any memory malloced by child on vfork */ |
e446cec8 IZ |
2001 | if (did_pipes) |
2002 | PerlLIO_close(pp[1]); | |
8ac85365 | 2003 | if (p[that] < p[This]) { |
6ad3d225 GS |
2004 | PerlLIO_dup2(p[This], p[that]); |
2005 | PerlLIO_close(p[This]); | |
8ac85365 | 2006 | p[This] = p[that]; |
62b28dd9 | 2007 | } |
b5ac89c3 NIS |
2008 | else |
2009 | PerlLIO_close(p[that]); | |
2010 | ||
4755096e | 2011 | LOCK_FDPID_MUTEX; |
3280af22 | 2012 | sv = *av_fetch(PL_fdpid,p[This],TRUE); |
4755096e | 2013 | UNLOCK_FDPID_MUTEX; |
a0d0e21e | 2014 | (void)SvUPGRADE(sv,SVt_IV); |
463ee0b2 | 2015 | SvIVX(sv) = pid; |
3280af22 | 2016 | PL_forkprocess = pid; |
e446cec8 IZ |
2017 | if (did_pipes && pid > 0) { |
2018 | int errkid; | |
2019 | int n = 0, n1; | |
2020 | ||
2021 | while (n < sizeof(int)) { | |
2022 | n1 = PerlLIO_read(pp[0], | |
2023 | (void*)(((char*)&errkid)+n), | |
2024 | (sizeof(int)) - n); | |
2025 | if (n1 <= 0) | |
2026 | break; | |
2027 | n += n1; | |
2028 | } | |
2f96c702 IZ |
2029 | PerlLIO_close(pp[0]); |
2030 | did_pipes = 0; | |
e446cec8 | 2031 | if (n) { /* Error */ |
faa466a7 | 2032 | int pid2, status; |
8c51524e | 2033 | PerlLIO_close(p[This]); |
e446cec8 | 2034 | if (n != sizeof(int)) |
cea2e8a9 | 2035 | Perl_croak(aTHX_ "panic: kid popen errno read"); |
faa466a7 RG |
2036 | do { |
2037 | pid2 = wait4pid(pid, &status, 0); | |
2038 | } while (pid2 == -1 && errno == EINTR); | |
e446cec8 IZ |
2039 | errno = errkid; /* Propagate errno from kid */ |
2040 | return Nullfp; | |
2041 | } | |
2042 | } | |
2043 | if (did_pipes) | |
2044 | PerlLIO_close(pp[0]); | |
8ac85365 | 2045 | return PerlIO_fdopen(p[This], mode); |
a687059c | 2046 | } |
7c0587c8 | 2047 | #else |
85ca448a | 2048 | #if defined(atarist) || defined(EPOC) |
7c0587c8 | 2049 | FILE *popen(); |
760ac839 | 2050 | PerlIO * |
864dbfa3 | 2051 | Perl_my_popen(pTHX_ char *cmd, char *mode) |
7c0587c8 | 2052 | { |
45bc9206 | 2053 | PERL_FLUSHALL_FOR_CHILD; |
a1d180c4 NIS |
2054 | /* Call system's popen() to get a FILE *, then import it. |
2055 | used 0 for 2nd parameter to PerlIO_importFILE; | |
2056 | apparently not used | |
2057 | */ | |
2058 | return PerlIO_importFILE(popen(cmd, mode), 0); | |
7c0587c8 | 2059 | } |
2b96b0a5 JH |
2060 | #else |
2061 | #if defined(DJGPP) | |
2062 | FILE *djgpp_popen(); | |
2063 | PerlIO * | |
2064 | Perl_my_popen(pTHX_ char *cmd, char *mode) | |
2065 | { | |
2066 | PERL_FLUSHALL_FOR_CHILD; | |
2067 | /* Call system's popen() to get a FILE *, then import it. | |
2068 | used 0 for 2nd parameter to PerlIO_importFILE; | |
2069 | apparently not used | |
2070 | */ | |
2071 | return PerlIO_importFILE(djgpp_popen(cmd, mode), 0); | |
2072 | } | |
2073 | #endif | |
7c0587c8 LW |
2074 | #endif |
2075 | ||
2076 | #endif /* !DOSISH */ | |
a687059c | 2077 | |
52e18b1f GS |
2078 | /* this is called in parent before the fork() */ |
2079 | void | |
2080 | Perl_atfork_lock(void) | |
2081 | { | |
3db8f154 | 2082 | #if defined(USE_ITHREADS) |
52e18b1f GS |
2083 | /* locks must be held in locking order (if any) */ |
2084 | # ifdef MYMALLOC | |
2085 | MUTEX_LOCK(&PL_malloc_mutex); | |
2086 | # endif | |
2087 | OP_REFCNT_LOCK; | |
2088 | #endif | |
2089 | } | |
2090 | ||
2091 | /* this is called in both parent and child after the fork() */ | |
2092 | void | |
2093 | Perl_atfork_unlock(void) | |
2094 | { | |
3db8f154 | 2095 | #if defined(USE_ITHREADS) |
52e18b1f GS |
2096 | /* locks must be released in same order as in atfork_lock() */ |
2097 | # ifdef MYMALLOC | |
2098 | MUTEX_UNLOCK(&PL_malloc_mutex); | |
2099 | # endif | |
2100 | OP_REFCNT_UNLOCK; | |
2101 | #endif | |
2102 | } | |
2103 | ||
2104 | Pid_t | |
2105 | Perl_my_fork(void) | |
2106 | { | |
2107 | #if defined(HAS_FORK) | |
2108 | Pid_t pid; | |
3db8f154 | 2109 | #if defined(USE_ITHREADS) && !defined(HAS_PTHREAD_ATFORK) |
52e18b1f GS |
2110 | atfork_lock(); |
2111 | pid = fork(); | |
2112 | atfork_unlock(); | |
2113 | #else | |
2114 | /* atfork_lock() and atfork_unlock() are installed as pthread_atfork() | |
2115 | * handlers elsewhere in the code */ | |
2116 | pid = fork(); | |
2117 | #endif | |
2118 | return pid; | |
2119 | #else | |
2120 | /* this "canna happen" since nothing should be calling here if !HAS_FORK */ | |
2121 | Perl_croak_nocontext("fork() not available"); | |
b961a566 | 2122 | return 0; |
52e18b1f GS |
2123 | #endif /* HAS_FORK */ |
2124 | } | |
2125 | ||
748a9306 | 2126 | #ifdef DUMP_FDS |
35ff7856 | 2127 | void |
864dbfa3 | 2128 | Perl_dump_fds(pTHX_ char *s) |
ae986130 LW |
2129 | { |
2130 | int fd; | |
c623ac67 | 2131 | Stat_t tmpstatbuf; |
ae986130 | 2132 | |
bf49b057 | 2133 | PerlIO_printf(Perl_debug_log,"%s", s); |
ae986130 | 2134 | for (fd = 0; fd < 32; fd++) { |
6ad3d225 | 2135 | if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0) |
bf49b057 | 2136 | PerlIO_printf(Perl_debug_log," %d",fd); |
ae986130 | 2137 | } |
bf49b057 | 2138 | PerlIO_printf(Perl_debug_log,"\n"); |
ae986130 | 2139 | } |
35ff7856 | 2140 | #endif /* DUMP_FDS */ |
ae986130 | 2141 | |
fe14fcc3 | 2142 | #ifndef HAS_DUP2 |
fec02dd3 | 2143 | int |
ba106d47 | 2144 | dup2(int oldfd, int newfd) |
a687059c | 2145 | { |
a0d0e21e | 2146 | #if defined(HAS_FCNTL) && defined(F_DUPFD) |
fec02dd3 AD |
2147 | if (oldfd == newfd) |
2148 | return oldfd; | |
6ad3d225 | 2149 | PerlLIO_close(newfd); |
fec02dd3 | 2150 | return fcntl(oldfd, F_DUPFD, newfd); |
62b28dd9 | 2151 | #else |
fc36a67e | 2152 | #define DUP2_MAX_FDS 256 |
2153 | int fdtmp[DUP2_MAX_FDS]; | |
79072805 | 2154 | I32 fdx = 0; |
ae986130 LW |
2155 | int fd; |
2156 | ||
fe14fcc3 | 2157 | if (oldfd == newfd) |
fec02dd3 | 2158 | return oldfd; |
6ad3d225 | 2159 | PerlLIO_close(newfd); |
fc36a67e | 2160 | /* good enough for low fd's... */ |
6ad3d225 | 2161 | while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) { |
fc36a67e | 2162 | if (fdx >= DUP2_MAX_FDS) { |
6ad3d225 | 2163 | PerlLIO_close(fd); |
fc36a67e | 2164 | fd = -1; |
2165 | break; | |
2166 | } | |
ae986130 | 2167 | fdtmp[fdx++] = fd; |
fc36a67e | 2168 | } |
ae986130 | 2169 | while (fdx > 0) |
6ad3d225 | 2170 | PerlLIO_close(fdtmp[--fdx]); |
fec02dd3 | 2171 | return fd; |
62b28dd9 | 2172 | #endif |
a687059c LW |
2173 | } |
2174 | #endif | |
2175 | ||
64ca3a65 | 2176 | #ifndef PERL_MICRO |
ff68c719 | 2177 | #ifdef HAS_SIGACTION |
2178 | ||
abea2c45 HS |
2179 | #ifdef MACOS_TRADITIONAL |
2180 | /* We don't want restart behavior on MacOS */ | |
2181 | #undef SA_RESTART | |
2182 | #endif | |
2183 | ||
ff68c719 | 2184 | Sighandler_t |
864dbfa3 | 2185 | Perl_rsignal(pTHX_ int signo, Sighandler_t handler) |
ff68c719 | 2186 | { |
2187 | struct sigaction act, oact; | |
2188 | ||
a10b1e10 JH |
2189 | #ifdef USE_ITHREADS |
2190 | /* only "parent" interpreter can diddle signals */ | |
2191 | if (PL_curinterp != aTHX) | |
2192 | return SIG_ERR; | |
2193 | #endif | |
2194 | ||
ff68c719 | 2195 | act.sa_handler = handler; |
2196 | sigemptyset(&act.sa_mask); | |
2197 | act.sa_flags = 0; | |
2198 | #ifdef SA_RESTART | |
4ffa73a3 JH |
2199 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
2200 | act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */ | |
0a8e0eff | 2201 | #endif |
85264bed CS |
2202 | #ifdef SA_NOCLDWAIT |
2203 | if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN) | |
2204 | act.sa_flags |= SA_NOCLDWAIT; | |
2205 | #endif | |
ff68c719 | 2206 | if (sigaction(signo, &act, &oact) == -1) |
36477c24 | 2207 | return SIG_ERR; |
ff68c719 | 2208 | else |
36477c24 | 2209 | return oact.sa_handler; |
ff68c719 | 2210 | } |
2211 | ||
2212 | Sighandler_t | |
864dbfa3 | 2213 | Perl_rsignal_state(pTHX_ int signo) |
ff68c719 | 2214 | { |
2215 | struct sigaction oact; | |
2216 | ||
2217 | if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1) | |
3aed30dc | 2218 | return SIG_ERR; |
ff68c719 | 2219 | else |
3aed30dc | 2220 | return oact.sa_handler; |
ff68c719 | 2221 | } |
2222 | ||
2223 | int | |
864dbfa3 | 2224 | Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save) |
ff68c719 | 2225 | { |
2226 | struct sigaction act; | |
2227 | ||
a10b1e10 JH |
2228 | #ifdef USE_ITHREADS |
2229 | /* only "parent" interpreter can diddle signals */ | |
2230 | if (PL_curinterp != aTHX) | |
2231 | return -1; | |
2232 | #endif | |
2233 | ||
ff68c719 | 2234 | act.sa_handler = handler; |
2235 | sigemptyset(&act.sa_mask); | |
2236 | act.sa_flags = 0; | |
2237 | #ifdef SA_RESTART | |
4ffa73a3 JH |
2238 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
2239 | act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */ | |
0a8e0eff | 2240 | #endif |
85264bed CS |
2241 | #ifdef SA_NOCLDWAIT |
2242 | if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN) | |
2243 | act.sa_flags |= SA_NOCLDWAIT; | |
2244 | #endif | |
ff68c719 | 2245 | return sigaction(signo, &act, save); |
2246 | } | |
2247 | ||
2248 | int | |
864dbfa3 | 2249 | Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save) |
ff68c719 | 2250 | { |
a10b1e10 JH |
2251 | #ifdef USE_ITHREADS |
2252 | /* only "parent" interpreter can diddle signals */ | |
2253 | if (PL_curinterp != aTHX) | |
2254 | return -1; | |
2255 | #endif | |
2256 | ||
ff68c719 | 2257 | return sigaction(signo, save, (struct sigaction *)NULL); |
2258 | } | |
2259 | ||
2260 | #else /* !HAS_SIGACTION */ | |
2261 | ||
2262 | Sighandler_t | |
864dbfa3 | 2263 | Perl_rsignal(pTHX_ int signo, Sighandler_t handler) |
ff68c719 | 2264 | { |
39f1703b | 2265 | #if defined(USE_ITHREADS) && !defined(WIN32) |
a10b1e10 JH |
2266 | /* only "parent" interpreter can diddle signals */ |
2267 | if (PL_curinterp != aTHX) | |
2268 | return SIG_ERR; | |
2269 | #endif | |
2270 | ||
6ad3d225 | 2271 | return PerlProc_signal(signo, handler); |
ff68c719 | 2272 | } |
2273 | ||
df3728a2 JH |
2274 | static int sig_trapped; /* XXX signals are process-wide anyway, so we |
2275 | ignore the implications of this for threading */ | |
ff68c719 | 2276 | |
2277 | static | |
2278 | Signal_t | |
4e35701f | 2279 | sig_trap(int signo) |
ff68c719 | 2280 | { |
2281 | sig_trapped++; | |
2282 | } | |
2283 | ||
2284 | Sighandler_t | |
864dbfa3 | 2285 | Perl_rsignal_state(pTHX_ int signo) |
ff68c719 | 2286 | { |
2287 | Sighandler_t oldsig; | |
2288 | ||
39f1703b | 2289 | #if defined(USE_ITHREADS) && !defined(WIN32) |
a10b1e10 JH |
2290 | /* only "parent" interpreter can diddle signals */ |
2291 | if (PL_curinterp != aTHX) | |
2292 | return SIG_ERR; | |
2293 | #endif | |
2294 | ||
ff68c719 | 2295 | sig_trapped = 0; |
6ad3d225 GS |
2296 | oldsig = PerlProc_signal(signo, sig_trap); |
2297 | PerlProc_signal(signo, oldsig); | |
ff68c719 | 2298 | if (sig_trapped) |
3aed30dc | 2299 | PerlProc_kill(PerlProc_getpid(), signo); |
ff68c719 | 2300 | return oldsig; |
2301 | } | |
2302 | ||
2303 | int | |
864dbfa3 | 2304 | Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save) |
ff68c719 | 2305 | { |
39f1703b | 2306 | #if defined(USE_ITHREADS) && !defined(WIN32) |
a10b1e10 JH |
2307 | /* only "parent" interpreter can diddle signals */ |
2308 | if (PL_curinterp != aTHX) | |
2309 | return -1; | |
2310 | #endif | |
6ad3d225 | 2311 | *save = PerlProc_signal(signo, handler); |
ff68c719 | 2312 | return (*save == SIG_ERR) ? -1 : 0; |
2313 | } | |
2314 | ||
2315 | int | |
864dbfa3 | 2316 | Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save) |
ff68c719 | 2317 | { |
39f1703b | 2318 | #if defined(USE_ITHREADS) && !defined(WIN32) |
a10b1e10 JH |
2319 | /* only "parent" interpreter can diddle signals */ |
2320 | if (PL_curinterp != aTHX) | |
2321 | return -1; | |
2322 | #endif | |
6ad3d225 | 2323 | return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0; |
ff68c719 | 2324 | } |
2325 | ||
2326 | #endif /* !HAS_SIGACTION */ | |
64ca3a65 | 2327 | #endif /* !PERL_MICRO */ |
ff68c719 | 2328 | |
5f05dabc | 2329 | /* VMS' my_pclose() is in VMS.c; same with OS/2 */ |
cd39f2b6 | 2330 | #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) |
79072805 | 2331 | I32 |
864dbfa3 | 2332 | Perl_my_pclose(pTHX_ PerlIO *ptr) |
a687059c | 2333 | { |
ff68c719 | 2334 | Sigsave_t hstat, istat, qstat; |
a687059c | 2335 | int status; |
a0d0e21e | 2336 | SV **svp; |
d8a83dd3 JH |
2337 | Pid_t pid; |
2338 | Pid_t pid2; | |
03136e13 | 2339 | bool close_failed; |
b7953727 | 2340 | int saved_errno = 0; |
03136e13 CS |
2341 | #ifdef VMS |
2342 | int saved_vaxc_errno; | |
2343 | #endif | |
22fae026 TM |
2344 | #ifdef WIN32 |
2345 | int saved_win32_errno; | |
2346 | #endif | |
a687059c | 2347 | |
4755096e | 2348 | LOCK_FDPID_MUTEX; |
3280af22 | 2349 | svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE); |
4755096e | 2350 | UNLOCK_FDPID_MUTEX; |
25d92023 | 2351 | pid = (SvTYPE(*svp) == SVt_IV) ? SvIVX(*svp) : -1; |
a0d0e21e | 2352 | SvREFCNT_dec(*svp); |
3280af22 | 2353 | *svp = &PL_sv_undef; |
ddcf38b7 IZ |
2354 | #ifdef OS2 |
2355 | if (pid == -1) { /* Opened by popen. */ | |
2356 | return my_syspclose(ptr); | |
2357 | } | |
a1d180c4 | 2358 | #endif |
03136e13 CS |
2359 | if ((close_failed = (PerlIO_close(ptr) == EOF))) { |
2360 | saved_errno = errno; | |
2361 | #ifdef VMS | |
2362 | saved_vaxc_errno = vaxc$errno; | |
2363 | #endif | |
22fae026 TM |
2364 | #ifdef WIN32 |
2365 | saved_win32_errno = GetLastError(); | |
2366 | #endif | |
03136e13 | 2367 | } |
7c0587c8 | 2368 | #ifdef UTS |
6ad3d225 | 2369 | if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */ |
7c0587c8 | 2370 | #endif |
64ca3a65 | 2371 | #ifndef PERL_MICRO |
ff68c719 | 2372 | rsignal_save(SIGHUP, SIG_IGN, &hstat); |
2373 | rsignal_save(SIGINT, SIG_IGN, &istat); | |
2374 | rsignal_save(SIGQUIT, SIG_IGN, &qstat); | |
64ca3a65 | 2375 | #endif |
748a9306 | 2376 | do { |
1d3434b8 GS |
2377 | pid2 = wait4pid(pid, &status, 0); |
2378 | } while (pid2 == -1 && errno == EINTR); | |
64ca3a65 | 2379 | #ifndef PERL_MICRO |
ff68c719 | 2380 | rsignal_restore(SIGHUP, &hstat); |
2381 | rsignal_restore(SIGINT, &istat); | |
2382 | rsignal_restore(SIGQUIT, &qstat); | |
64ca3a65 | 2383 | #endif |
03136e13 CS |
2384 | if (close_failed) { |
2385 | SETERRNO(saved_errno, saved_vaxc_errno); | |
2386 | return -1; | |
2387 | } | |
1d3434b8 | 2388 | return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status)); |
20188a90 | 2389 | } |
4633a7c4 LW |
2390 | #endif /* !DOSISH */ |
2391 | ||
2986a63f | 2392 | #if (!defined(DOSISH) || defined(OS2) || defined(WIN32) || defined(NETWARE)) && !defined(MACOS_TRADITIONAL) |
79072805 | 2393 | I32 |
d8a83dd3 | 2394 | Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags) |
20188a90 | 2395 | { |
cddd4526 | 2396 | I32 result; |
b7953727 JH |
2397 | if (!pid) |
2398 | return -1; | |
2399 | #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME) | |
2400 | { | |
3aed30dc HS |
2401 | SV *sv; |
2402 | SV** svp; | |
2403 | char spid[TYPE_CHARS(int)]; | |
20188a90 | 2404 | |
3aed30dc | 2405 | if (pid > 0) { |
7b0972df | 2406 | sprintf(spid, "%"IVdf, (IV)pid); |
3aed30dc HS |
2407 | svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE); |
2408 | if (svp && *svp != &PL_sv_undef) { | |
2409 | *statusp = SvIVX(*svp); | |
2410 | (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD); | |
2411 | return pid; | |
2412 | } | |
2413 | } | |
2414 | else { | |
2415 | HE *entry; | |
2416 | ||
2417 | hv_iterinit(PL_pidstatus); | |
2418 | if ((entry = hv_iternext(PL_pidstatus))) { | |
2419 | SV *sv; | |
2420 | char spid[TYPE_CHARS(int)]; | |
2421 | ||
2422 | pid = atoi(hv_iterkey(entry,(I32*)statusp)); | |
2423 | sv = hv_iterval(PL_pidstatus,entry); | |
2424 | *statusp = SvIVX(sv); | |
2425 | sprintf(spid, "%"IVdf, (IV)pid); | |
2426 | (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD); | |
2427 | return pid; | |
2428 | } | |
20188a90 LW |
2429 | } |
2430 | } | |
68a29c53 | 2431 | #endif |
79072805 | 2432 | #ifdef HAS_WAITPID |
367f3c24 IZ |
2433 | # ifdef HAS_WAITPID_RUNTIME |
2434 | if (!HAS_WAITPID_RUNTIME) | |
2435 | goto hard_way; | |
2436 | # endif | |
cddd4526 | 2437 | result = PerlProc_waitpid(pid,statusp,flags); |
dfcfdb64 | 2438 | goto finish; |
367f3c24 IZ |
2439 | #endif |
2440 | #if !defined(HAS_WAITPID) && defined(HAS_WAIT4) | |
cddd4526 | 2441 | result = wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *)); |
dfcfdb64 | 2442 | goto finish; |
367f3c24 IZ |
2443 | #endif |
2444 | #if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME) | |
2445 | hard_way: | |
a0d0e21e | 2446 | { |
a0d0e21e | 2447 | if (flags) |
cea2e8a9 | 2448 | Perl_croak(aTHX_ "Can't do waitpid with flags"); |
a0d0e21e | 2449 | else { |
76e3520e | 2450 | while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0) |
a0d0e21e LW |
2451 | pidgone(result,*statusp); |
2452 | if (result < 0) | |
2453 | *statusp = -1; | |
2454 | } | |
a687059c LW |
2455 | } |
2456 | #endif | |
dfcfdb64 | 2457 | finish: |
cddd4526 NIS |
2458 | if (result < 0 && errno == EINTR) { |
2459 | PERL_ASYNC_CHECK(); | |
2460 | } | |
2461 | return result; | |
a687059c | 2462 | } |
2986a63f | 2463 | #endif /* !DOSISH || OS2 || WIN32 || NETWARE */ |
a687059c | 2464 | |
7c0587c8 | 2465 | void |
de3bb511 | 2466 | /*SUPPRESS 590*/ |
d8a83dd3 | 2467 | Perl_pidgone(pTHX_ Pid_t pid, int status) |
a687059c | 2468 | { |
79072805 | 2469 | register SV *sv; |
fc36a67e | 2470 | char spid[TYPE_CHARS(int)]; |
a687059c | 2471 | |
7b0972df | 2472 | sprintf(spid, "%"IVdf, (IV)pid); |
3280af22 | 2473 | sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE); |
a0d0e21e | 2474 | (void)SvUPGRADE(sv,SVt_IV); |
463ee0b2 | 2475 | SvIVX(sv) = status; |
20188a90 | 2476 | return; |
a687059c LW |
2477 | } |
2478 | ||
85ca448a | 2479 | #if defined(atarist) || defined(OS2) || defined(EPOC) |
7c0587c8 | 2480 | int pclose(); |
ddcf38b7 IZ |
2481 | #ifdef HAS_FORK |
2482 | int /* Cannot prototype with I32 | |
2483 | in os2ish.h. */ | |
ba106d47 | 2484 | my_syspclose(PerlIO *ptr) |
ddcf38b7 | 2485 | #else |
79072805 | 2486 | I32 |
864dbfa3 | 2487 | Perl_my_pclose(pTHX_ PerlIO *ptr) |
a1d180c4 | 2488 | #endif |
a687059c | 2489 | { |
760ac839 LW |
2490 | /* Needs work for PerlIO ! */ |
2491 | FILE *f = PerlIO_findFILE(ptr); | |
2492 | I32 result = pclose(f); | |
2b96b0a5 JH |
2493 | PerlIO_releaseFILE(ptr,f); |
2494 | return result; | |
2495 | } | |
2496 | #endif | |
2497 | ||
933fea7f | 2498 | #if defined(DJGPP) |
2b96b0a5 JH |
2499 | int djgpp_pclose(); |
2500 | I32 | |
2501 | Perl_my_pclose(pTHX_ PerlIO *ptr) | |
2502 | { | |
2503 | /* Needs work for PerlIO ! */ | |
2504 | FILE *f = PerlIO_findFILE(ptr); | |
2505 | I32 result = djgpp_pclose(f); | |
933fea7f | 2506 | result = (result << 8) & 0xff00; |
760ac839 LW |
2507 | PerlIO_releaseFILE(ptr,f); |
2508 | return result; | |
a687059c | 2509 | } |
7c0587c8 | 2510 | #endif |
9f68db38 LW |
2511 | |
2512 | void | |
864dbfa3 | 2513 | Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count) |
9f68db38 | 2514 | { |
79072805 | 2515 | register I32 todo; |
08105a92 | 2516 | register const char *frombase = from; |
9f68db38 LW |
2517 | |
2518 | if (len == 1) { | |
08105a92 | 2519 | register const char c = *from; |
9f68db38 | 2520 | while (count-- > 0) |
5926133d | 2521 | *to++ = c; |
9f68db38 LW |
2522 | return; |
2523 | } | |
2524 | while (count-- > 0) { | |
2525 | for (todo = len; todo > 0; todo--) { | |
2526 | *to++ = *from++; | |
2527 | } | |
2528 | from = frombase; | |
2529 | } | |
2530 | } | |
0f85fab0 | 2531 | |
fe14fcc3 | 2532 | #ifndef HAS_RENAME |
79072805 | 2533 | I32 |
864dbfa3 | 2534 | Perl_same_dirent(pTHX_ char *a, char *b) |
62b28dd9 | 2535 | { |
93a17b20 LW |
2536 | char *fa = strrchr(a,'/'); |
2537 | char *fb = strrchr(b,'/'); | |
c623ac67 GS |
2538 | Stat_t tmpstatbuf1; |
2539 | Stat_t tmpstatbuf2; | |
46fc3d4c | 2540 | SV *tmpsv = sv_newmortal(); |
62b28dd9 LW |
2541 | |
2542 | if (fa) | |
2543 | fa++; | |
2544 | else | |
2545 | fa = a; | |
2546 | if (fb) | |
2547 | fb++; | |
2548 | else | |
2549 | fb = b; | |
2550 | if (strNE(a,b)) | |
2551 | return FALSE; | |
2552 | if (fa == a) | |
46fc3d4c | 2553 | sv_setpv(tmpsv, "."); |
62b28dd9 | 2554 | else |
46fc3d4c | 2555 | sv_setpvn(tmpsv, a, fa - a); |
c6ed36e1 | 2556 | if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0) |
62b28dd9 LW |
2557 | return FALSE; |
2558 | if (fb == b) | |
46fc3d4c | 2559 | sv_setpv(tmpsv, "."); |
62b28dd9 | 2560 | else |
46fc3d4c | 2561 | sv_setpvn(tmpsv, b, fb - b); |
c6ed36e1 | 2562 | if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0) |
62b28dd9 LW |
2563 | return FALSE; |
2564 | return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev && | |
2565 | tmpstatbuf1.st_ino == tmpstatbuf2.st_ino; | |
2566 | } | |
fe14fcc3 LW |
2567 | #endif /* !HAS_RENAME */ |
2568 | ||
491527d0 | 2569 | char* |
864dbfa3 | 2570 | Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags) |
491527d0 | 2571 | { |
491527d0 GS |
2572 | char *xfound = Nullch; |
2573 | char *xfailed = Nullch; | |
0f31cffe | 2574 | char tmpbuf[MAXPATHLEN]; |
491527d0 | 2575 | register char *s; |
5f74f29c | 2576 | I32 len = 0; |
491527d0 GS |
2577 | int retval; |
2578 | #if defined(DOSISH) && !defined(OS2) && !defined(atarist) | |
2579 | # define SEARCH_EXTS ".bat", ".cmd", NULL | |
2580 | # define MAX_EXT_LEN 4 | |
2581 | #endif | |
2582 | #ifdef OS2 | |
2583 | # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL | |
2584 | # define MAX_EXT_LEN 4 | |
2585 | #endif | |
2586 | #ifdef VMS | |
2587 | # define SEARCH_EXTS ".pl", ".com", NULL | |
2588 | # define MAX_EXT_LEN 4 | |
2589 | #endif | |
2590 | /* additional extensions to try in each dir if scriptname not found */ | |
2591 | #ifdef SEARCH_EXTS | |
2592 | char *exts[] = { SEARCH_EXTS }; | |
2593 | char **ext = search_ext ? search_ext : exts; | |
2594 | int extidx = 0, i = 0; | |
2595 | char *curext = Nullch; | |
2596 | #else | |
2597 | # define MAX_EXT_LEN 0 | |
2598 | #endif | |
2599 | ||
2600 | /* | |
2601 | * If dosearch is true and if scriptname does not contain path | |
2602 | * delimiters, search the PATH for scriptname. | |
2603 | * | |
2604 | * If SEARCH_EXTS is also defined, will look for each | |
2605 | * scriptname{SEARCH_EXTS} whenever scriptname is not found | |
2606 | * while searching the PATH. | |
2607 | * | |
2608 | * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search | |
2609 | * proceeds as follows: | |
2610 | * If DOSISH or VMSISH: | |
2611 | * + look for ./scriptname{,.foo,.bar} | |
2612 | * + search the PATH for scriptname{,.foo,.bar} | |
2613 | * | |
2614 | * If !DOSISH: | |
2615 | * + look *only* in the PATH for scriptname{,.foo,.bar} (note | |
2616 | * this will not look in '.' if it's not in the PATH) | |
2617 | */ | |
84486fc6 | 2618 | tmpbuf[0] = '\0'; |
491527d0 GS |
2619 | |
2620 | #ifdef VMS | |
2621 | # ifdef ALWAYS_DEFTYPES | |
2622 | len = strlen(scriptname); | |
2623 | if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') { | |
2624 | int hasdir, idx = 0, deftypes = 1; | |
2625 | bool seen_dot = 1; | |
2626 | ||
2627 | hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ; | |
2628 | # else | |
2629 | if (dosearch) { | |
2630 | int hasdir, idx = 0, deftypes = 1; | |
2631 | bool seen_dot = 1; | |
2632 | ||
2633 | hasdir = (strpbrk(scriptname,":[</") != Nullch) ; | |
2634 | # endif | |
2635 | /* The first time through, just add SEARCH_EXTS to whatever we | |
2636 | * already have, so we can check for default file types. */ | |
2637 | while (deftypes || | |
84486fc6 | 2638 | (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) ) |
491527d0 GS |
2639 | { |
2640 | if (deftypes) { | |
2641 | deftypes = 0; | |
84486fc6 | 2642 | *tmpbuf = '\0'; |
491527d0 | 2643 | } |
84486fc6 GS |
2644 | if ((strlen(tmpbuf) + strlen(scriptname) |
2645 | + MAX_EXT_LEN) >= sizeof tmpbuf) | |
491527d0 | 2646 | continue; /* don't search dir with too-long name */ |
84486fc6 | 2647 | strcat(tmpbuf, scriptname); |
491527d0 GS |
2648 | #else /* !VMS */ |
2649 | ||
2650 | #ifdef DOSISH | |
2651 | if (strEQ(scriptname, "-")) | |
2652 | dosearch = 0; | |
2653 | if (dosearch) { /* Look in '.' first. */ | |
2654 | char *cur = scriptname; | |
2655 | #ifdef SEARCH_EXTS | |
2656 | if ((curext = strrchr(scriptname,'.'))) /* possible current ext */ | |
2657 | while (ext[i]) | |
2658 | if (strEQ(ext[i++],curext)) { | |
2659 | extidx = -1; /* already has an ext */ | |
2660 | break; | |
2661 | } | |
2662 | do { | |
2663 | #endif | |
2664 | DEBUG_p(PerlIO_printf(Perl_debug_log, | |
2665 | "Looking for %s\n",cur)); | |
017f25f1 IZ |
2666 | if (PerlLIO_stat(cur,&PL_statbuf) >= 0 |
2667 | && !S_ISDIR(PL_statbuf.st_mode)) { | |
491527d0 GS |
2668 | dosearch = 0; |
2669 | scriptname = cur; | |
2670 | #ifdef SEARCH_EXTS | |
2671 | break; | |
2672 | #endif | |
2673 | } | |
2674 | #ifdef SEARCH_EXTS | |
2675 | if (cur == scriptname) { | |
2676 | len = strlen(scriptname); | |
84486fc6 | 2677 | if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf)) |
491527d0 | 2678 | break; |
84486fc6 | 2679 | cur = strcpy(tmpbuf, scriptname); |
491527d0 GS |
2680 | } |
2681 | } while (extidx >= 0 && ext[extidx] /* try an extension? */ | |
84486fc6 | 2682 | && strcpy(tmpbuf+len, ext[extidx++])); |
491527d0 GS |
2683 | #endif |
2684 | } | |
2685 | #endif | |
2686 | ||
cd39f2b6 JH |
2687 | #ifdef MACOS_TRADITIONAL |
2688 | if (dosearch && !strchr(scriptname, ':') && | |
2689 | (s = PerlEnv_getenv("Commands"))) | |
2690 | #else | |
491527d0 GS |
2691 | if (dosearch && !strchr(scriptname, '/') |
2692 | #ifdef DOSISH | |
2693 | && !strchr(scriptname, '\\') | |
2694 | #endif | |
cd39f2b6 JH |
2695 | && (s = PerlEnv_getenv("PATH"))) |
2696 | #endif | |
2697 | { | |
491527d0 | 2698 | bool seen_dot = 0; |
92f0c265 | 2699 | |
3280af22 NIS |
2700 | PL_bufend = s + strlen(s); |
2701 | while (s < PL_bufend) { | |
cd39f2b6 JH |
2702 | #ifdef MACOS_TRADITIONAL |
2703 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend, | |
2704 | ',', | |
2705 | &len); | |
2706 | #else | |
491527d0 GS |
2707 | #if defined(atarist) || defined(DOSISH) |
2708 | for (len = 0; *s | |
2709 | # ifdef atarist | |
2710 | && *s != ',' | |
2711 | # endif | |
2712 | && *s != ';'; len++, s++) { | |
84486fc6 GS |
2713 | if (len < sizeof tmpbuf) |
2714 | tmpbuf[len] = *s; | |
491527d0 | 2715 | } |
84486fc6 GS |
2716 | if (len < sizeof tmpbuf) |
2717 | tmpbuf[len] = '\0'; | |
491527d0 | 2718 | #else /* ! (atarist || DOSISH) */ |
3280af22 | 2719 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend, |
491527d0 GS |
2720 | ':', |
2721 | &len); | |
2722 | #endif /* ! (atarist || DOSISH) */ | |
cd39f2b6 | 2723 | #endif /* MACOS_TRADITIONAL */ |
3280af22 | 2724 | if (s < PL_bufend) |
491527d0 | 2725 | s++; |
84486fc6 | 2726 | if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf) |
491527d0 | 2727 | continue; /* don't search dir with too-long name */ |
cd39f2b6 JH |
2728 | #ifdef MACOS_TRADITIONAL |
2729 | if (len && tmpbuf[len - 1] != ':') | |
2730 | tmpbuf[len++] = ':'; | |
2731 | #else | |
491527d0 | 2732 | if (len |
61ae2fbf | 2733 | #if defined(atarist) || defined(__MINT__) || defined(DOSISH) |
84486fc6 GS |
2734 | && tmpbuf[len - 1] != '/' |
2735 | && tmpbuf[len - 1] != '\\' | |
491527d0 GS |
2736 | #endif |
2737 | ) | |
84486fc6 GS |
2738 | tmpbuf[len++] = '/'; |
2739 | if (len == 2 && tmpbuf[0] == '.') | |
491527d0 | 2740 | seen_dot = 1; |
cd39f2b6 | 2741 | #endif |
84486fc6 | 2742 | (void)strcpy(tmpbuf + len, scriptname); |
491527d0 GS |
2743 | #endif /* !VMS */ |
2744 | ||
2745 | #ifdef SEARCH_EXTS | |
84486fc6 | 2746 | len = strlen(tmpbuf); |
491527d0 GS |
2747 | if (extidx > 0) /* reset after previous loop */ |
2748 | extidx = 0; | |
2749 | do { | |
2750 | #endif | |
84486fc6 | 2751 | DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf)); |
3280af22 | 2752 | retval = PerlLIO_stat(tmpbuf,&PL_statbuf); |
017f25f1 IZ |
2753 | if (S_ISDIR(PL_statbuf.st_mode)) { |
2754 | retval = -1; | |
2755 | } | |
491527d0 GS |
2756 | #ifdef SEARCH_EXTS |
2757 | } while ( retval < 0 /* not there */ | |
2758 | && extidx>=0 && ext[extidx] /* try an extension? */ | |
84486fc6 | 2759 | && strcpy(tmpbuf+len, ext[extidx++]) |
491527d0 GS |
2760 | ); |
2761 | #endif | |
2762 | if (retval < 0) | |
2763 | continue; | |
3280af22 NIS |
2764 | if (S_ISREG(PL_statbuf.st_mode) |
2765 | && cando(S_IRUSR,TRUE,&PL_statbuf) | |
73811745 | 2766 | #if !defined(DOSISH) && !defined(MACOS_TRADITIONAL) |
3280af22 | 2767 | && cando(S_IXUSR,TRUE,&PL_statbuf) |
491527d0 GS |
2768 | #endif |
2769 | ) | |
2770 | { | |
3aed30dc | 2771 | xfound = tmpbuf; /* bingo! */ |
491527d0 GS |
2772 | break; |
2773 | } | |
2774 | if (!xfailed) | |
84486fc6 | 2775 | xfailed = savepv(tmpbuf); |
491527d0 GS |
2776 | } |
2777 | #ifndef DOSISH | |
017f25f1 | 2778 | if (!xfound && !seen_dot && !xfailed && |
a1d180c4 | 2779 | (PerlLIO_stat(scriptname,&PL_statbuf) < 0 |
017f25f1 | 2780 | || S_ISDIR(PL_statbuf.st_mode))) |
491527d0 GS |
2781 | #endif |
2782 | seen_dot = 1; /* Disable message. */ | |
9ccb31f9 GS |
2783 | if (!xfound) { |
2784 | if (flags & 1) { /* do or die? */ | |
3aed30dc | 2785 | Perl_croak(aTHX_ "Can't %s %s%s%s", |
9ccb31f9 GS |
2786 | (xfailed ? "execute" : "find"), |
2787 | (xfailed ? xfailed : scriptname), | |
2788 | (xfailed ? "" : " on PATH"), | |
2789 | (xfailed || seen_dot) ? "" : ", '.' not in PATH"); | |
2790 | } | |
2791 | scriptname = Nullch; | |
2792 | } | |
491527d0 GS |
2793 | if (xfailed) |
2794 | Safefree(xfailed); | |
2795 | scriptname = xfound; | |
2796 | } | |
9ccb31f9 | 2797 | return (scriptname ? savepv(scriptname) : Nullch); |
491527d0 GS |
2798 | } |
2799 | ||
ba869deb GS |
2800 | #ifndef PERL_GET_CONTEXT_DEFINED |
2801 | ||
2802 | void * | |
2803 | Perl_get_context(void) | |
2804 | { | |
3db8f154 | 2805 | #if defined(USE_ITHREADS) |
ba869deb GS |
2806 | # ifdef OLD_PTHREADS_API |
2807 | pthread_addr_t t; | |
2808 | if (pthread_getspecific(PL_thr_key, &t)) | |
2809 | Perl_croak_nocontext("panic: pthread_getspecific"); | |
2810 | return (void*)t; | |
2811 | # else | |
bce813aa | 2812 | # ifdef I_MACH_CTHREADS |
8b8b35ab | 2813 | return (void*)cthread_data(cthread_self()); |
bce813aa | 2814 | # else |
8b8b35ab JH |
2815 | return (void*)PTHREAD_GETSPECIFIC(PL_thr_key); |
2816 | # endif | |
c44d3fdb | 2817 | # endif |
ba869deb GS |
2818 | #else |
2819 | return (void*)NULL; | |
2820 | #endif | |
2821 | } | |
2822 | ||
2823 | void | |
2824 | Perl_set_context(void *t) | |
2825 | { | |
3db8f154 | 2826 | #if defined(USE_ITHREADS) |
c44d3fdb GS |
2827 | # ifdef I_MACH_CTHREADS |
2828 | cthread_set_data(cthread_self(), t); | |
2829 | # else | |
ba869deb GS |
2830 | if (pthread_setspecific(PL_thr_key, t)) |
2831 | Perl_croak_nocontext("panic: pthread_setspecific"); | |
c44d3fdb | 2832 | # endif |
ba869deb GS |
2833 | #endif |
2834 | } | |
2835 | ||
2836 | #endif /* !PERL_GET_CONTEXT_DEFINED */ | |
491527d0 | 2837 | |
22239a37 NIS |
2838 | #ifdef PERL_GLOBAL_STRUCT |
2839 | struct perl_vars * | |
864dbfa3 | 2840 | Perl_GetVars(pTHX) |
22239a37 | 2841 | { |
533c011a | 2842 | return &PL_Vars; |
22239a37 | 2843 | } |
31fb1209 NIS |
2844 | #endif |
2845 | ||
2846 | char ** | |
864dbfa3 | 2847 | Perl_get_op_names(pTHX) |
31fb1209 | 2848 | { |
22c35a8c | 2849 | return PL_op_name; |
31fb1209 NIS |
2850 | } |
2851 | ||
2852 | char ** | |
864dbfa3 | 2853 | Perl_get_op_descs(pTHX) |
31fb1209 | 2854 | { |
22c35a8c | 2855 | return PL_op_desc; |
31fb1209 | 2856 | } |
9e6b2b00 GS |
2857 | |
2858 | char * | |
864dbfa3 | 2859 | Perl_get_no_modify(pTHX) |
9e6b2b00 | 2860 | { |
22c35a8c | 2861 | return (char*)PL_no_modify; |
9e6b2b00 GS |
2862 | } |
2863 | ||
2864 | U32 * | |
864dbfa3 | 2865 | Perl_get_opargs(pTHX) |
9e6b2b00 | 2866 | { |
22c35a8c | 2867 | return PL_opargs; |
9e6b2b00 | 2868 | } |
51aa15f3 | 2869 | |
0cb96387 GS |
2870 | PPADDR_t* |
2871 | Perl_get_ppaddr(pTHX) | |
2872 | { | |
12ae5dfc | 2873 | return (PPADDR_t*)PL_ppaddr; |
0cb96387 GS |
2874 | } |
2875 | ||
a6c40364 GS |
2876 | #ifndef HAS_GETENV_LEN |
2877 | char * | |
bf4acbe4 | 2878 | Perl_getenv_len(pTHX_ const char *env_elem, unsigned long *len) |
a6c40364 GS |
2879 | { |
2880 | char *env_trans = PerlEnv_getenv(env_elem); | |
2881 | if (env_trans) | |
2882 | *len = strlen(env_trans); | |
2883 | return env_trans; | |
f675dbe5 CB |
2884 | } |
2885 | #endif | |
2886 | ||
dc9e4912 GS |
2887 | |
2888 | MGVTBL* | |
864dbfa3 | 2889 | Perl_get_vtbl(pTHX_ int vtbl_id) |
dc9e4912 GS |
2890 | { |
2891 | MGVTBL* result = Null(MGVTBL*); | |
2892 | ||
2893 | switch(vtbl_id) { | |
2894 | case want_vtbl_sv: | |
2895 | result = &PL_vtbl_sv; | |
2896 | break; | |
2897 | case want_vtbl_env: | |
2898 | result = &PL_vtbl_env; | |
2899 | break; | |
2900 | case want_vtbl_envelem: | |
2901 | result = &PL_vtbl_envelem; | |
2902 | break; | |
2903 | case want_vtbl_sig: | |
2904 | result = &PL_vtbl_sig; | |
2905 | break; | |
2906 | case want_vtbl_sigelem: | |
2907 | result = &PL_vtbl_sigelem; | |
2908 | break; | |
2909 | case want_vtbl_pack: | |
2910 | result = &PL_vtbl_pack; | |
2911 | break; | |
2912 | case want_vtbl_packelem: | |
2913 | result = &PL_vtbl_packelem; | |
2914 | break; | |
2915 | case want_vtbl_dbline: | |
2916 | result = &PL_vtbl_dbline; | |
2917 | break; | |
2918 | case want_vtbl_isa: | |
2919 | result = &PL_vtbl_isa; | |
2920 | break; | |
2921 | case want_vtbl_isaelem: | |
2922 | result = &PL_vtbl_isaelem; | |
2923 | break; | |
2924 | case want_vtbl_arylen: | |
2925 | result = &PL_vtbl_arylen; | |
2926 | break; | |
2927 | case want_vtbl_glob: | |
2928 | result = &PL_vtbl_glob; | |
2929 | break; | |
2930 | case want_vtbl_mglob: | |
2931 | result = &PL_vtbl_mglob; | |
2932 | break; | |
2933 | case want_vtbl_nkeys: | |
2934 | result = &PL_vtbl_nkeys; | |
2935 | break; | |
2936 | case want_vtbl_taint: | |
2937 | result = &PL_vtbl_taint; | |
2938 | break; | |
2939 | case want_vtbl_substr: | |
2940 | result = &PL_vtbl_substr; | |
2941 | break; | |
2942 | case want_vtbl_vec: | |
2943 | result = &PL_vtbl_vec; | |
2944 | break; | |
2945 | case want_vtbl_pos: | |
2946 | result = &PL_vtbl_pos; | |
2947 | break; | |
2948 | case want_vtbl_bm: | |
2949 | result = &PL_vtbl_bm; | |
2950 | break; | |
2951 | case want_vtbl_fm: | |
2952 | result = &PL_vtbl_fm; | |
2953 | break; | |
2954 | case want_vtbl_uvar: | |
2955 | result = &PL_vtbl_uvar; | |
2956 | break; | |
dc9e4912 GS |
2957 | case want_vtbl_defelem: |
2958 | result = &PL_vtbl_defelem; | |
2959 | break; | |
2960 | case want_vtbl_regexp: | |
2961 | result = &PL_vtbl_regexp; | |
2962 | break; | |
2963 | case want_vtbl_regdata: | |
2964 | result = &PL_vtbl_regdata; | |
2965 | break; | |
2966 | case want_vtbl_regdatum: | |
2967 | result = &PL_vtbl_regdatum; | |
2968 | break; | |
3c90161d | 2969 | #ifdef USE_LOCALE_COLLATE |
dc9e4912 GS |
2970 | case want_vtbl_collxfrm: |
2971 | result = &PL_vtbl_collxfrm; | |
2972 | break; | |
3c90161d | 2973 | #endif |
dc9e4912 GS |
2974 | case want_vtbl_amagic: |
2975 | result = &PL_vtbl_amagic; | |
2976 | break; | |
2977 | case want_vtbl_amagicelem: | |
2978 | result = &PL_vtbl_amagicelem; | |
2979 | break; | |
810b8aa5 GS |
2980 | case want_vtbl_backref: |
2981 | result = &PL_vtbl_backref; | |
2982 | break; | |
7e8c5dac HS |
2983 | case want_vtbl_utf8: |
2984 | result = &PL_vtbl_utf8; | |
2985 | break; | |
dc9e4912 GS |
2986 | } |
2987 | return result; | |
2988 | } | |
2989 | ||
767df6a1 | 2990 | I32 |
864dbfa3 | 2991 | Perl_my_fflush_all(pTHX) |
767df6a1 | 2992 | { |
f800e14d | 2993 | #if defined(USE_PERLIO) || defined(FFLUSH_NULL) || defined(USE_SFIO) |
ce720889 | 2994 | return PerlIO_flush(NULL); |
767df6a1 | 2995 | #else |
8fbdfb7c | 2996 | # if defined(HAS__FWALK) |
f13a2bc0 | 2997 | extern int fflush(FILE *); |
74cac757 JH |
2998 | /* undocumented, unprototyped, but very useful BSDism */ |
2999 | extern void _fwalk(int (*)(FILE *)); | |
8fbdfb7c | 3000 | _fwalk(&fflush); |
74cac757 | 3001 | return 0; |
8fa7f367 | 3002 | # else |
8fbdfb7c | 3003 | # if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY) |
8fa7f367 | 3004 | long open_max = -1; |
8fbdfb7c | 3005 | # ifdef PERL_FFLUSH_ALL_FOPEN_MAX |
d2201af2 | 3006 | open_max = PERL_FFLUSH_ALL_FOPEN_MAX; |
8fbdfb7c | 3007 | # else |
8fa7f367 | 3008 | # if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX) |
767df6a1 | 3009 | open_max = sysconf(_SC_OPEN_MAX); |
8fa7f367 JH |
3010 | # else |
3011 | # ifdef FOPEN_MAX | |
74cac757 | 3012 | open_max = FOPEN_MAX; |
8fa7f367 JH |
3013 | # else |
3014 | # ifdef OPEN_MAX | |
74cac757 | 3015 | open_max = OPEN_MAX; |
8fa7f367 JH |
3016 | # else |
3017 | # ifdef _NFILE | |
d2201af2 | 3018 | open_max = _NFILE; |
8fa7f367 JH |
3019 | # endif |
3020 | # endif | |
74cac757 | 3021 | # endif |
767df6a1 JH |
3022 | # endif |
3023 | # endif | |
767df6a1 JH |
3024 | if (open_max > 0) { |
3025 | long i; | |
3026 | for (i = 0; i < open_max; i++) | |
d2201af2 AD |
3027 | if (STDIO_STREAM_ARRAY[i]._file >= 0 && |
3028 | STDIO_STREAM_ARRAY[i]._file < open_max && | |
3029 | STDIO_STREAM_ARRAY[i]._flag) | |
3030 | PerlIO_flush(&STDIO_STREAM_ARRAY[i]); | |
767df6a1 JH |
3031 | return 0; |
3032 | } | |
8fbdfb7c | 3033 | # endif |
93189314 | 3034 | SETERRNO(EBADF,RMS_IFI); |
767df6a1 | 3035 | return EOF; |
74cac757 | 3036 | # endif |
767df6a1 JH |
3037 | #endif |
3038 | } | |
097ee67d | 3039 | |
69282e91 | 3040 | void |
bc37a18f RG |
3041 | Perl_report_evil_fh(pTHX_ GV *gv, IO *io, I32 op) |
3042 | { | |
bc37a18f | 3043 | char *func = |
66fc2fa5 JH |
3044 | op == OP_READLINE ? "readline" : /* "<HANDLE>" not nice */ |
3045 | op == OP_LEAVEWRITE ? "write" : /* "write exit" not nice */ | |
bc37a18f RG |
3046 | PL_op_desc[op]; |
3047 | char *pars = OP_IS_FILETEST(op) ? "" : "()"; | |
3aed30dc HS |
3048 | char *type = OP_IS_SOCKET(op) |
3049 | || (gv && io && IoTYPE(io) == IoTYPE_SOCKET) | |
3050 | ? "socket" : "filehandle"; | |
9c0fcd4f | 3051 | char *name = NULL; |
bc37a18f | 3052 | |
66fc2fa5 | 3053 | if (gv && isGV(gv)) { |
f62cb720 | 3054 | name = GvENAME(gv); |
66fc2fa5 JH |
3055 | } |
3056 | ||
4c80c0b2 | 3057 | if (op == OP_phoney_OUTPUT_ONLY || op == OP_phoney_INPUT_ONLY) { |
3aed30dc | 3058 | if (ckWARN(WARN_IO)) { |
fd322ea4 | 3059 | const char *direction = (op == OP_phoney_INPUT_ONLY) ? "in" : "out"; |
3aed30dc HS |
3060 | if (name && *name) |
3061 | Perl_warner(aTHX_ packWARN(WARN_IO), | |
3062 | "Filehandle %s opened only for %sput", | |
fd322ea4 | 3063 | name, direction); |
3aed30dc HS |
3064 | else |
3065 | Perl_warner(aTHX_ packWARN(WARN_IO), | |
fd322ea4 | 3066 | "Filehandle opened only for %sput", direction); |
3aed30dc | 3067 | } |
2dd78f96 JH |
3068 | } |
3069 | else { | |
3aed30dc HS |
3070 | char *vile; |
3071 | I32 warn_type; | |
3072 | ||
3073 | if (gv && io && IoTYPE(io) == IoTYPE_CLOSED) { | |
3074 | vile = "closed"; | |
3075 | warn_type = WARN_CLOSED; | |
3076 | } | |
3077 | else { | |
3078 | vile = "unopened"; | |
3079 | warn_type = WARN_UNOPENED; | |
3080 | } | |
3081 | ||
3082 | if (ckWARN(warn_type)) { | |
3083 | if (name && *name) { | |
3084 | Perl_warner(aTHX_ packWARN(warn_type), | |
3085 | "%s%s on %s %s %s", func, pars, vile, type, name); | |
3086 | if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP)) | |
3087 | Perl_warner( | |
3088 | aTHX_ packWARN(warn_type), | |
3089 | "\t(Are you trying to call %s%s on dirhandle %s?)\n", | |
3090 | func, pars, name | |
3091 | ); | |
3092 | } | |
3093 | else { | |
3094 | Perl_warner(aTHX_ packWARN(warn_type), | |
3095 | "%s%s on %s %s", func, pars, vile, type); | |
3096 | if (gv && io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP)) | |
3097 | Perl_warner( | |
3098 | aTHX_ packWARN(warn_type), | |
3099 | "\t(Are you trying to call %s%s on dirhandle?)\n", | |
3100 | func, pars | |
3101 | ); | |
3102 | } | |
3103 | } | |
bc37a18f | 3104 | } |
69282e91 | 3105 | } |
a926ef6b JH |
3106 | |
3107 | #ifdef EBCDIC | |
cbebf344 JH |
3108 | /* in ASCII order, not that it matters */ |
3109 | static const char controllablechars[] = "?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"; | |
3110 | ||
a926ef6b JH |
3111 | int |
3112 | Perl_ebcdic_control(pTHX_ int ch) | |
3113 | { | |
3aed30dc HS |
3114 | if (ch > 'a') { |
3115 | char *ctlp; | |
3116 | ||
3117 | if (islower(ch)) | |
3118 | ch = toupper(ch); | |
3119 | ||
3120 | if ((ctlp = strchr(controllablechars, ch)) == 0) { | |
3121 | Perl_die(aTHX_ "unrecognised control character '%c'\n", ch); | |
a926ef6b | 3122 | } |
3aed30dc HS |
3123 | |
3124 | if (ctlp == controllablechars) | |
3125 | return('\177'); /* DEL */ | |
3126 | else | |
3127 | return((unsigned char)(ctlp - controllablechars - 1)); | |
3128 | } else { /* Want uncontrol */ | |
3129 | if (ch == '\177' || ch == -1) | |
3130 | return('?'); | |
3131 | else if (ch == '\157') | |
3132 | return('\177'); | |
3133 | else if (ch == '\174') | |
3134 | return('\000'); | |
3135 | else if (ch == '^') /* '\137' in 1047, '\260' in 819 */ | |
3136 | return('\036'); | |
3137 | else if (ch == '\155') | |
3138 | return('\037'); | |
3139 | else if (0 < ch && ch < (sizeof(controllablechars) - 1)) | |
3140 | return(controllablechars[ch+1]); | |
3141 | else | |
3142 | Perl_die(aTHX_ "invalid control request: '\\%03o'\n", ch & 0xFF); | |
3143 | } | |
a926ef6b JH |
3144 | } |
3145 | #endif | |
e72cf795 | 3146 | |
f6adc668 | 3147 | /* To workaround core dumps from the uninitialised tm_zone we get the |
e72cf795 JH |
3148 | * system to give us a reasonable struct to copy. This fix means that |
3149 | * strftime uses the tm_zone and tm_gmtoff values returned by | |
3150 | * localtime(time()). That should give the desired result most of the | |
3151 | * time. But probably not always! | |
3152 | * | |
f6adc668 JH |
3153 | * This does not address tzname aspects of NETaa14816. |
3154 | * | |
e72cf795 | 3155 | */ |
f6adc668 | 3156 | |
e72cf795 JH |
3157 | #ifdef HAS_GNULIBC |
3158 | # ifndef STRUCT_TM_HASZONE | |
3159 | # define STRUCT_TM_HASZONE | |
3160 | # endif | |
3161 | #endif | |
3162 | ||
f6adc668 JH |
3163 | #ifdef STRUCT_TM_HASZONE /* Backward compat */ |
3164 | # ifndef HAS_TM_TM_ZONE | |
3165 | # define HAS_TM_TM_ZONE | |
3166 | # endif | |
3167 | #endif | |
3168 | ||
e72cf795 | 3169 | void |
f1208910 | 3170 | Perl_init_tm(pTHX_ struct tm *ptm) /* see mktime, strftime and asctime */ |
e72cf795 | 3171 | { |
f6adc668 | 3172 | #ifdef HAS_TM_TM_ZONE |
e72cf795 JH |
3173 | Time_t now; |
3174 | (void)time(&now); | |
3175 | Copy(localtime(&now), ptm, 1, struct tm); | |
3176 | #endif | |
3177 | } | |
3178 | ||
3179 | /* | |
3180 | * mini_mktime - normalise struct tm values without the localtime() | |
3181 | * semantics (and overhead) of mktime(). | |
3182 | */ | |
3183 | void | |
f1208910 | 3184 | Perl_mini_mktime(pTHX_ struct tm *ptm) |
e72cf795 JH |
3185 | { |
3186 | int yearday; | |
3187 | int secs; | |
3188 | int month, mday, year, jday; | |
3189 | int odd_cent, odd_year; | |
3190 | ||
3191 | #define DAYS_PER_YEAR 365 | |
3192 | #define DAYS_PER_QYEAR (4*DAYS_PER_YEAR+1) | |
3193 | #define DAYS_PER_CENT (25*DAYS_PER_QYEAR-1) | |
3194 | #define DAYS_PER_QCENT (4*DAYS_PER_CENT+1) | |
3195 | #define SECS_PER_HOUR (60*60) | |
3196 | #define SECS_PER_DAY (24*SECS_PER_HOUR) | |
3197 | /* parentheses deliberately absent on these two, otherwise they don't work */ | |
3198 | #define MONTH_TO_DAYS 153/5 | |
3199 | #define DAYS_TO_MONTH 5/153 | |
3200 | /* offset to bias by March (month 4) 1st between month/mday & year finding */ | |
3201 | #define YEAR_ADJUST (4*MONTH_TO_DAYS+1) | |
3202 | /* as used here, the algorithm leaves Sunday as day 1 unless we adjust it */ | |
3203 | #define WEEKDAY_BIAS 6 /* (1+6)%7 makes Sunday 0 again */ | |
3204 | ||
3205 | /* | |
3206 | * Year/day algorithm notes: | |
3207 | * | |
3208 | * With a suitable offset for numeric value of the month, one can find | |
3209 | * an offset into the year by considering months to have 30.6 (153/5) days, | |
3210 | * using integer arithmetic (i.e., with truncation). To avoid too much | |
3211 | * messing about with leap days, we consider January and February to be | |
3212 | * the 13th and 14th month of the previous year. After that transformation, | |
3213 | * we need the month index we use to be high by 1 from 'normal human' usage, | |
3214 | * so the month index values we use run from 4 through 15. | |
3215 | * | |
3216 | * Given that, and the rules for the Gregorian calendar (leap years are those | |
3217 | * divisible by 4 unless also divisible by 100, when they must be divisible | |
3218 | * by 400 instead), we can simply calculate the number of days since some | |
3219 | * arbitrary 'beginning of time' by futzing with the (adjusted) year number, | |
3220 | * the days we derive from our month index, and adding in the day of the | |
3221 | * month. The value used here is not adjusted for the actual origin which | |
3222 | * it normally would use (1 January A.D. 1), since we're not exposing it. | |
3223 | * We're only building the value so we can turn around and get the | |
3224 | * normalised values for the year, month, day-of-month, and day-of-year. | |
3225 | * | |
3226 | * For going backward, we need to bias the value we're using so that we find | |
3227 | * the right year value. (Basically, we don't want the contribution of | |
3228 | * March 1st to the number to apply while deriving the year). Having done | |
3229 | * that, we 'count up' the contribution to the year number by accounting for | |
3230 | * full quadracenturies (400-year periods) with their extra leap days, plus | |
3231 | * the contribution from full centuries (to avoid counting in the lost leap | |
3232 | * days), plus the contribution from full quad-years (to count in the normal | |
3233 | * leap days), plus the leftover contribution from any non-leap years. | |
3234 | * At this point, if we were working with an actual leap day, we'll have 0 | |
3235 | * days left over. This is also true for March 1st, however. So, we have | |
3236 | * to special-case that result, and (earlier) keep track of the 'odd' | |
3237 | * century and year contributions. If we got 4 extra centuries in a qcent, | |
3238 | * or 4 extra years in a qyear, then it's a leap day and we call it 29 Feb. | |
3239 | * Otherwise, we add back in the earlier bias we removed (the 123 from | |
3240 | * figuring in March 1st), find the month index (integer division by 30.6), | |
3241 | * and the remainder is the day-of-month. We then have to convert back to | |
3242 | * 'real' months (including fixing January and February from being 14/15 in | |
3243 | * the previous year to being in the proper year). After that, to get | |
3244 | * tm_yday, we work with the normalised year and get a new yearday value for | |
3245 | * January 1st, which we subtract from the yearday value we had earlier, | |
3246 | * representing the date we've re-built. This is done from January 1 | |
3247 | * because tm_yday is 0-origin. | |
3248 | * | |
3249 | * Since POSIX time routines are only guaranteed to work for times since the | |
3250 | * UNIX epoch (00:00:00 1 Jan 1970 UTC), the fact that this algorithm | |
3251 | * applies Gregorian calendar rules even to dates before the 16th century | |
3252 | * doesn't bother me. Besides, you'd need cultural context for a given | |
3253 | * date to know whether it was Julian or Gregorian calendar, and that's | |
3254 | * outside the scope for this routine. Since we convert back based on the | |
3255 | * same rules we used to build the yearday, you'll only get strange results | |
3256 | * for input which needed normalising, or for the 'odd' century years which | |
3257 | * were leap years in the Julian calander but not in the Gregorian one. | |
3258 | * I can live with that. | |
3259 | * | |
3260 | * This algorithm also fails to handle years before A.D. 1 gracefully, but | |
3261 | * that's still outside the scope for POSIX time manipulation, so I don't | |
3262 | * care. | |
3263 | */ | |
3264 | ||
3265 | year = 1900 + ptm->tm_year; | |
3266 | month = ptm->tm_mon; | |
3267 | mday = ptm->tm_mday; | |
3268 | /* allow given yday with no month & mday to dominate the result */ | |
3269 | if (ptm->tm_yday >= 0 && mday <= 0 && month <= 0) { | |
3270 | month = 0; | |
3271 | mday = 0; | |
3272 | jday = 1 + ptm->tm_yday; | |
3273 | } | |
3274 | else { | |
3275 | jday = 0; | |
3276 | } | |
3277 | if (month >= 2) | |
3278 | month+=2; | |
3279 | else | |
3280 | month+=14, year--; | |
3281 | yearday = DAYS_PER_YEAR * year + year/4 - year/100 + year/400; | |
3282 | yearday += month*MONTH_TO_DAYS + mday + jday; | |
3283 | /* | |
3284 | * Note that we don't know when leap-seconds were or will be, | |
3285 | * so we have to trust the user if we get something which looks | |
3286 | * like a sensible leap-second. Wild values for seconds will | |
3287 | * be rationalised, however. | |
3288 | */ | |
3289 | if ((unsigned) ptm->tm_sec <= 60) { | |
3290 | secs = 0; | |
3291 | } | |
3292 | else { | |
3293 | secs = ptm->tm_sec; | |
3294 | ptm->tm_sec = 0; | |
3295 | } | |
3296 | secs += 60 * ptm->tm_min; | |
3297 | secs += SECS_PER_HOUR * ptm->tm_hour; | |
3298 | if (secs < 0) { | |
3299 | if (secs-(secs/SECS_PER_DAY*SECS_PER_DAY) < 0) { | |
3300 | /* got negative remainder, but need positive time */ | |
3301 | /* back off an extra day to compensate */ | |
3302 | yearday += (secs/SECS_PER_DAY)-1; | |
3303 | secs -= SECS_PER_DAY * (secs/SECS_PER_DAY - 1); | |
3304 | } | |
3305 | else { | |
3306 | yearday += (secs/SECS_PER_DAY); | |
3307 | secs -= SECS_PER_DAY * (secs/SECS_PER_DAY); | |
3308 | } | |
3309 | } | |
3310 | else if (secs >= SECS_PER_DAY) { | |
3311 | yearday += (secs/SECS_PER_DAY); | |
3312 | secs %= SECS_PER_DAY; | |
3313 | } | |
3314 | ptm->tm_hour = secs/SECS_PER_HOUR; | |
3315 | secs %= SECS_PER_HOUR; | |
3316 | ptm->tm_min = secs/60; | |
3317 | secs %= 60; | |
3318 | ptm->tm_sec += secs; | |
3319 | /* done with time of day effects */ | |
3320 | /* | |
3321 | * The algorithm for yearday has (so far) left it high by 428. | |
3322 | * To avoid mistaking a legitimate Feb 29 as Mar 1, we need to | |
3323 | * bias it by 123 while trying to figure out what year it | |
3324 | * really represents. Even with this tweak, the reverse | |
3325 | * translation fails for years before A.D. 0001. | |
3326 | * It would still fail for Feb 29, but we catch that one below. | |
3327 | */ | |
3328 | jday = yearday; /* save for later fixup vis-a-vis Jan 1 */ | |
3329 | yearday -= YEAR_ADJUST; | |
3330 | year = (yearday / DAYS_PER_QCENT) * 400; | |
3331 | yearday %= DAYS_PER_QCENT; | |
3332 | odd_cent = yearday / DAYS_PER_CENT; | |
3333 | year += odd_cent * 100; | |
3334 | yearday %= DAYS_PER_CENT; | |
3335 | year += (yearday / DAYS_PER_QYEAR) * 4; | |
3336 | yearday %= DAYS_PER_QYEAR; | |
3337 | odd_year = yearday / DAYS_PER_YEAR; | |
3338 | year += odd_year; | |
3339 | yearday %= DAYS_PER_YEAR; | |
3340 | if (!yearday && (odd_cent==4 || odd_year==4)) { /* catch Feb 29 */ | |
3341 | month = 1; | |
3342 | yearday = 29; | |
3343 | } | |
3344 | else { | |
3345 | yearday += YEAR_ADJUST; /* recover March 1st crock */ | |
3346 | month = yearday*DAYS_TO_MONTH; | |
3347 | yearday -= month*MONTH_TO_DAYS; | |
3348 | /* recover other leap-year adjustment */ | |
3349 | if (month > 13) { | |
3350 | month-=14; | |
3351 | year++; | |
3352 | } | |
3353 | else { | |
3354 | month-=2; | |
3355 | } | |
3356 | } | |
3357 | ptm->tm_year = year - 1900; | |
3358 | if (yearday) { | |
3359 | ptm->tm_mday = yearday; | |
3360 | ptm->tm_mon = month; | |
3361 | } | |
3362 | else { | |
3363 | ptm->tm_mday = 31; | |
3364 | ptm->tm_mon = month - 1; | |
3365 | } | |
3366 | /* re-build yearday based on Jan 1 to get tm_yday */ | |
3367 | year--; | |
3368 | yearday = year*DAYS_PER_YEAR + year/4 - year/100 + year/400; | |
3369 | yearday += 14*MONTH_TO_DAYS + 1; | |
3370 | ptm->tm_yday = jday - yearday; | |
3371 | /* fix tm_wday if not overridden by caller */ | |
3372 | if ((unsigned)ptm->tm_wday > 6) | |
3373 | ptm->tm_wday = (jday + WEEKDAY_BIAS) % 7; | |
3374 | } | |
b3c85772 JH |
3375 | |
3376 | char * | |
f1208910 | 3377 | Perl_my_strftime(pTHX_ char *fmt, int sec, int min, int hour, int mday, int mon, int year, int wday, int yday, int isdst) |
b3c85772 JH |
3378 | { |
3379 | #ifdef HAS_STRFTIME | |
3380 | char *buf; | |
3381 | int buflen; | |
3382 | struct tm mytm; | |
3383 | int len; | |
3384 | ||
3385 | init_tm(&mytm); /* XXX workaround - see init_tm() above */ | |
3386 | mytm.tm_sec = sec; | |
3387 | mytm.tm_min = min; | |
3388 | mytm.tm_hour = hour; | |
3389 | mytm.tm_mday = mday; | |
3390 | mytm.tm_mon = mon; | |
3391 | mytm.tm_year = year; | |
3392 | mytm.tm_wday = wday; | |
3393 | mytm.tm_yday = yday; | |
3394 | mytm.tm_isdst = isdst; | |
3395 | mini_mktime(&mytm); | |
c473feec SR |
3396 | /* use libc to get the values for tm_gmtoff and tm_zone [perl #18238] */ |
3397 | #if defined(HAS_MKTIME) && (defined(HAS_TM_TM_GMTOFF) || defined(HAS_TM_TM_ZONE)) | |
3398 | STMT_START { | |
3399 | struct tm mytm2; | |
3400 | mytm2 = mytm; | |
3401 | mktime(&mytm2); | |
3402 | #ifdef HAS_TM_TM_GMTOFF | |
3403 | mytm.tm_gmtoff = mytm2.tm_gmtoff; | |
3404 | #endif | |
3405 | #ifdef HAS_TM_TM_ZONE | |
3406 | mytm.tm_zone = mytm2.tm_zone; | |
3407 | #endif | |
3408 | } STMT_END; | |
3409 | #endif | |
b3c85772 JH |
3410 | buflen = 64; |
3411 | New(0, buf, buflen, char); | |
3412 | len = strftime(buf, buflen, fmt, &mytm); | |
3413 | /* | |
877f6a72 | 3414 | ** The following is needed to handle to the situation where |
b3c85772 JH |
3415 | ** tmpbuf overflows. Basically we want to allocate a buffer |
3416 | ** and try repeatedly. The reason why it is so complicated | |
3417 | ** is that getting a return value of 0 from strftime can indicate | |
3418 | ** one of the following: | |
3419 | ** 1. buffer overflowed, | |
3420 | ** 2. illegal conversion specifier, or | |
3421 | ** 3. the format string specifies nothing to be returned(not | |
3422 | ** an error). This could be because format is an empty string | |
3423 | ** or it specifies %p that yields an empty string in some locale. | |
3424 | ** If there is a better way to make it portable, go ahead by | |
3425 | ** all means. | |
3426 | */ | |
3427 | if ((len > 0 && len < buflen) || (len == 0 && *fmt == '\0')) | |
3428 | return buf; | |
3429 | else { | |
3430 | /* Possibly buf overflowed - try again with a bigger buf */ | |
3431 | int fmtlen = strlen(fmt); | |
3432 | int bufsize = fmtlen + buflen; | |
877f6a72 | 3433 | |
b3c85772 JH |
3434 | New(0, buf, bufsize, char); |
3435 | while (buf) { | |
3436 | buflen = strftime(buf, bufsize, fmt, &mytm); | |
3437 | if (buflen > 0 && buflen < bufsize) | |
3438 | break; | |
3439 | /* heuristic to prevent out-of-memory errors */ | |
3440 | if (bufsize > 100*fmtlen) { | |
3441 | Safefree(buf); | |
3442 | buf = NULL; | |
3443 | break; | |
3444 | } | |
3445 | bufsize *= 2; | |
3446 | Renew(buf, bufsize, char); | |
3447 | } | |
3448 | return buf; | |
3449 | } | |
3450 | #else | |
3451 | Perl_croak(aTHX_ "panic: no strftime"); | |
3452 | #endif | |
3453 | } | |
3454 | ||
877f6a72 NIS |
3455 | |
3456 | #define SV_CWD_RETURN_UNDEF \ | |
3457 | sv_setsv(sv, &PL_sv_undef); \ | |
3458 | return FALSE | |
3459 | ||
3460 | #define SV_CWD_ISDOT(dp) \ | |
3461 | (dp->d_name[0] == '.' && (dp->d_name[1] == '\0' || \ | |
3aed30dc | 3462 | (dp->d_name[1] == '.' && dp->d_name[2] == '\0'))) |
877f6a72 NIS |
3463 | |
3464 | /* | |
ccfc67b7 JH |
3465 | =head1 Miscellaneous Functions |
3466 | ||
89423764 | 3467 | =for apidoc getcwd_sv |
877f6a72 NIS |
3468 | |
3469 | Fill the sv with current working directory | |
3470 | ||
3471 | =cut | |
3472 | */ | |
3473 | ||
3474 | /* Originally written in Perl by John Bazik; rewritten in C by Ben Sugars. | |
3475 | * rewritten again by dougm, optimized for use with xs TARG, and to prefer | |
3476 | * getcwd(3) if available | |
3477 | * Comments from the orignal: | |
3478 | * This is a faster version of getcwd. It's also more dangerous | |
3479 | * because you might chdir out of a directory that you can't chdir | |
3480 | * back into. */ | |
3481 | ||
877f6a72 | 3482 | int |
89423764 | 3483 | Perl_getcwd_sv(pTHX_ register SV *sv) |
877f6a72 NIS |
3484 | { |
3485 | #ifndef PERL_MICRO | |
3486 | ||
ea715489 JH |
3487 | #ifndef INCOMPLETE_TAINTS |
3488 | SvTAINTED_on(sv); | |
3489 | #endif | |
3490 | ||
8f95b30d JH |
3491 | #ifdef HAS_GETCWD |
3492 | { | |
60e110a8 DM |
3493 | char buf[MAXPATHLEN]; |
3494 | ||
3aed30dc | 3495 | /* Some getcwd()s automatically allocate a buffer of the given |
60e110a8 DM |
3496 | * size from the heap if they are given a NULL buffer pointer. |
3497 | * The problem is that this behaviour is not portable. */ | |
3aed30dc HS |
3498 | if (getcwd(buf, sizeof(buf) - 1)) { |
3499 | STRLEN len = strlen(buf); | |
3500 | sv_setpvn(sv, buf, len); | |
3501 | return TRUE; | |
3502 | } | |
3503 | else { | |
3504 | sv_setsv(sv, &PL_sv_undef); | |
3505 | return FALSE; | |
3506 | } | |
8f95b30d JH |
3507 | } |
3508 | ||
3509 | #else | |
3510 | ||
c623ac67 | 3511 | Stat_t statbuf; |
877f6a72 NIS |
3512 | int orig_cdev, orig_cino, cdev, cino, odev, oino, tdev, tino; |
3513 | int namelen, pathlen=0; | |
3514 | DIR *dir; | |
3515 | Direntry_t *dp; | |
877f6a72 NIS |
3516 | |
3517 | (void)SvUPGRADE(sv, SVt_PV); | |
3518 | ||
877f6a72 | 3519 | if (PerlLIO_lstat(".", &statbuf) < 0) { |
3aed30dc | 3520 | SV_CWD_RETURN_UNDEF; |
877f6a72 NIS |
3521 | } |
3522 | ||
3523 | orig_cdev = statbuf.st_dev; | |
3524 | orig_cino = statbuf.st_ino; | |
3525 | cdev = orig_cdev; | |
3526 | cino = orig_cino; | |
3527 | ||
3528 | for (;;) { | |
3aed30dc HS |
3529 | odev = cdev; |
3530 | oino = cino; | |
3531 | ||
3532 | if (PerlDir_chdir("..") < 0) { | |
3533 | SV_CWD_RETURN_UNDEF; | |
3534 | } | |
3535 | if (PerlLIO_stat(".", &statbuf) < 0) { | |
3536 | SV_CWD_RETURN_UNDEF; | |
3537 | } | |
3538 | ||
3539 | cdev = statbuf.st_dev; | |
3540 | cino = statbuf.st_ino; | |
3541 | ||
3542 | if (odev == cdev && oino == cino) { | |
3543 | break; | |
3544 | } | |
3545 | if (!(dir = PerlDir_open("."))) { | |
3546 | SV_CWD_RETURN_UNDEF; | |
3547 | } | |
3548 | ||
3549 | while ((dp = PerlDir_read(dir)) != NULL) { | |
877f6a72 | 3550 | #ifdef DIRNAMLEN |
3aed30dc | 3551 | namelen = dp->d_namlen; |
877f6a72 | 3552 | #else |
3aed30dc | 3553 | namelen = strlen(dp->d_name); |
877f6a72 | 3554 | #endif |
3aed30dc HS |
3555 | /* skip . and .. */ |
3556 | if (SV_CWD_ISDOT(dp)) { | |
3557 | continue; | |
3558 | } | |
3559 | ||
3560 | if (PerlLIO_lstat(dp->d_name, &statbuf) < 0) { | |
3561 | SV_CWD_RETURN_UNDEF; | |
3562 | } | |
3563 | ||
3564 | tdev = statbuf.st_dev; | |
3565 | tino = statbuf.st_ino; | |
3566 | if (tino == oino && tdev == odev) { | |
3567 | break; | |
3568 | } | |
cb5953d6 JH |
3569 | } |
3570 | ||
3aed30dc HS |
3571 | if (!dp) { |
3572 | SV_CWD_RETURN_UNDEF; | |
3573 | } | |
3574 | ||
3575 | if (pathlen + namelen + 1 >= MAXPATHLEN) { | |
3576 | SV_CWD_RETURN_UNDEF; | |
3577 | } | |
877f6a72 | 3578 | |
3aed30dc HS |
3579 | SvGROW(sv, pathlen + namelen + 1); |
3580 | ||
3581 | if (pathlen) { | |
3582 | /* shift down */ | |
3583 | Move(SvPVX(sv), SvPVX(sv) + namelen + 1, pathlen, char); | |
3584 | } | |
877f6a72 | 3585 | |
3aed30dc HS |
3586 | /* prepend current directory to the front */ |
3587 | *SvPVX(sv) = '/'; | |
3588 | Move(dp->d_name, SvPVX(sv)+1, namelen, char); | |
3589 | pathlen += (namelen + 1); | |
877f6a72 NIS |
3590 | |
3591 | #ifdef VOID_CLOSEDIR | |
3aed30dc | 3592 | PerlDir_close(dir); |
877f6a72 | 3593 | #else |
3aed30dc HS |
3594 | if (PerlDir_close(dir) < 0) { |
3595 | SV_CWD_RETURN_UNDEF; | |
3596 | } | |
877f6a72 NIS |
3597 | #endif |
3598 | } | |
3599 | ||
60e110a8 | 3600 | if (pathlen) { |
3aed30dc HS |
3601 | SvCUR_set(sv, pathlen); |
3602 | *SvEND(sv) = '\0'; | |
3603 | SvPOK_only(sv); | |
877f6a72 | 3604 | |
2a45baea | 3605 | if (PerlDir_chdir(SvPVX(sv)) < 0) { |
3aed30dc HS |
3606 | SV_CWD_RETURN_UNDEF; |
3607 | } | |
877f6a72 NIS |
3608 | } |
3609 | if (PerlLIO_stat(".", &statbuf) < 0) { | |
3aed30dc | 3610 | SV_CWD_RETURN_UNDEF; |
877f6a72 NIS |
3611 | } |
3612 | ||
3613 | cdev = statbuf.st_dev; | |
3614 | cino = statbuf.st_ino; | |
3615 | ||
3616 | if (cdev != orig_cdev || cino != orig_cino) { | |
3aed30dc HS |
3617 | Perl_croak(aTHX_ "Unstable directory path, " |
3618 | "current directory changed unexpectedly"); | |
877f6a72 | 3619 | } |
877f6a72 NIS |
3620 | |
3621 | return TRUE; | |
793b8d8e JH |
3622 | #endif |
3623 | ||
877f6a72 NIS |
3624 | #else |
3625 | return FALSE; | |
3626 | #endif | |
3627 | } | |
3628 | ||
f4758303 | 3629 | /* |
ccfc67b7 JH |
3630 | =head1 SV Manipulation Functions |
3631 | ||
b0f01acb | 3632 | =for apidoc scan_vstring |
f4758303 JP |
3633 | |
3634 | Returns a pointer to the next character after the parsed | |
3635 | vstring, as well as updating the passed in sv. | |
7207e29d | 3636 | |
cddd4526 | 3637 | Function must be called like |
7207e29d | 3638 | |
b0f01acb JP |
3639 | sv = NEWSV(92,5); |
3640 | s = scan_vstring(s,sv); | |
f4758303 | 3641 | |
b0f01acb JP |
3642 | The sv should already be large enough to store the vstring |
3643 | passed in, for performance reasons. | |
f4758303 JP |
3644 | |
3645 | =cut | |
3646 | */ | |
3647 | ||
3648 | char * | |
b0f01acb | 3649 | Perl_scan_vstring(pTHX_ char *s, SV *sv) |
f4758303 JP |
3650 | { |
3651 | char *pos = s; | |
439cb1c4 | 3652 | char *start = s; |
f4758303 JP |
3653 | if (*pos == 'v') pos++; /* get past 'v' */ |
3654 | while (isDIGIT(*pos) || *pos == '_') | |
3655 | pos++; | |
3656 | if (!isALPHA(*pos)) { | |
3657 | UV rev; | |
3658 | U8 tmpbuf[UTF8_MAXLEN+1]; | |
3659 | U8 *tmpend; | |
3660 | ||
3661 | if (*s == 'v') s++; /* get past 'v' */ | |
3662 | ||
3663 | sv_setpvn(sv, "", 0); | |
3664 | ||
3665 | for (;;) { | |
3666 | rev = 0; | |
3667 | { | |
92f0c265 JP |
3668 | /* this is atoi() that tolerates underscores */ |
3669 | char *end = pos; | |
3670 | UV mult = 1; | |
3671 | while (--end >= s) { | |
3672 | UV orev; | |
3673 | if (*end == '_') | |
3674 | continue; | |
3675 | orev = rev; | |
3676 | rev += (*end - '0') * mult; | |
3677 | mult *= 10; | |
3678 | if (orev > rev && ckWARN_d(WARN_OVERFLOW)) | |
3679 | Perl_warner(aTHX_ packWARN(WARN_OVERFLOW), | |
3680 | "Integer overflow in decimal number"); | |
3681 | } | |
f4758303 | 3682 | } |
979699d9 JH |
3683 | #ifdef EBCDIC |
3684 | if (rev > 0x7FFFFFFF) | |
3685 | Perl_croak(aTHX "In EBCDIC the v-string components cannot exceed 2147483647"); | |
3686 | #endif | |
f4758303 JP |
3687 | /* Append native character for the rev point */ |
3688 | tmpend = uvchr_to_utf8(tmpbuf, rev); | |
3689 | sv_catpvn(sv, (const char*)tmpbuf, tmpend - tmpbuf); | |
3690 | if (!UNI_IS_INVARIANT(NATIVE_TO_UNI(rev))) | |
979699d9 | 3691 | SvUTF8_on(sv); |
92f0c265 | 3692 | if (*pos == '.' && isDIGIT(pos[1])) |
979699d9 | 3693 | s = ++pos; |
f4758303 | 3694 | else { |
979699d9 JH |
3695 | s = pos; |
3696 | break; | |
f4758303 | 3697 | } |
92f0c265 | 3698 | while (isDIGIT(*pos) || *pos == '_') |
979699d9 | 3699 | pos++; |
f4758303 JP |
3700 | } |
3701 | SvPOK_on(sv); | |
ece467f9 | 3702 | sv_magic(sv,NULL,PERL_MAGIC_vstring,(const char*)start, pos-start); |
439cb1c4 | 3703 | SvRMAGICAL_on(sv); |
f4758303 JP |
3704 | } |
3705 | return s; | |
3706 | } | |
3707 | ||
b0f01acb JP |
3708 | /* |
3709 | =for apidoc scan_version | |
3710 | ||
3711 | Returns a pointer to the next character after the parsed | |
3712 | version string, as well as upgrading the passed in SV to | |
3713 | an RV. | |
3714 | ||
3715 | Function must be called with an already existing SV like | |
3716 | ||
3717 | sv = NEWSV(92,0); | |
3718 | s = scan_version(s,sv); | |
3719 | ||
3720 | Performs some preprocessing to the string to ensure that | |
3721 | it has the correct characteristics of a version. Flags the | |
3722 | object if it contains an underscore (which denotes this | |
3723 | is a beta version). | |
3724 | ||
3725 | =cut | |
3726 | */ | |
3727 | ||
3728 | char * | |
ad63d80f | 3729 | Perl_scan_version(pTHX_ char *s, SV *rv) |
b0f01acb | 3730 | { |
e568f1a0 | 3731 | const char *start = s; |
ad63d80f JP |
3732 | char *pos = s; |
3733 | I32 saw_period = 0; | |
3734 | bool saw_under = 0; | |
be2ebcad | 3735 | SV* sv = newSVrv(rv, "version"); /* create an SV and upgrade the RV */ |
ad63d80f JP |
3736 | (void)sv_upgrade(sv, SVt_PVAV); /* needs to be an AV type */ |
3737 | ||
3738 | /* pre-scan the imput string to check for decimals */ | |
3739 | while ( *pos == '.' || *pos == '_' || isDIGIT(*pos) ) | |
3740 | { | |
3741 | if ( *pos == '.' ) | |
3742 | { | |
3743 | if ( saw_under ) | |
5f89c282 | 3744 | Perl_croak(aTHX_ "Invalid version format (underscores before decimal)"); |
ad63d80f | 3745 | saw_period++ ; |
46314c13 | 3746 | } |
ad63d80f JP |
3747 | else if ( *pos == '_' ) |
3748 | { | |
3749 | if ( saw_under ) | |
5f89c282 | 3750 | Perl_croak(aTHX_ "Invalid version format (multiple underscores)"); |
ad63d80f JP |
3751 | saw_under = 1; |
3752 | } | |
3753 | pos++; | |
3754 | } | |
3755 | pos = s; | |
3756 | ||
3757 | if (*pos == 'v') pos++; /* get past 'v' */ | |
3758 | while (isDIGIT(*pos)) | |
46314c13 | 3759 | pos++; |
ad63d80f JP |
3760 | if (!isALPHA(*pos)) { |
3761 | I32 rev; | |
3762 | ||
3763 | if (*s == 'v') s++; /* get past 'v' */ | |
3764 | ||
3765 | for (;;) { | |
3766 | rev = 0; | |
3767 | { | |
129318bd JP |
3768 | /* this is atoi() that delimits on underscores */ |
3769 | char *end = pos; | |
3770 | I32 mult = 1; | |
3771 | I32 orev; | |
3772 | if ( s < pos && s > start && *(s-1) == '_' ) { | |
3773 | mult *= -1; /* beta version */ | |
3774 | } | |
3775 | /* the following if() will only be true after the decimal | |
3776 | * point of a version originally created with a bare | |
3777 | * floating point number, i.e. not quoted in any way | |
3778 | */ | |
3779 | if ( s > start+1 && saw_period == 1 && !saw_under ) { | |
3780 | mult = 100; | |
3781 | while ( s < end ) { | |
3782 | orev = rev; | |
3783 | rev += (*s - '0') * mult; | |
3784 | mult /= 10; | |
32fdb065 | 3785 | if ( PERL_ABS(orev) > PERL_ABS(rev) ) |
129318bd JP |
3786 | Perl_croak(aTHX_ "Integer overflow in version"); |
3787 | s++; | |
3788 | } | |
3789 | } | |
3790 | else { | |
3791 | while (--end >= s) { | |
3792 | orev = rev; | |
3793 | rev += (*end - '0') * mult; | |
3794 | mult *= 10; | |
32fdb065 | 3795 | if ( PERL_ABS(orev) > PERL_ABS(rev) ) |
129318bd JP |
3796 | Perl_croak(aTHX_ "Integer overflow in version"); |
3797 | } | |
3798 | } | |
3799 | } | |
3800 | ||
3801 | /* Append revision */ | |
ad63d80f JP |
3802 | av_push((AV *)sv, newSViv(rev)); |
3803 | if ( (*pos == '.' || *pos == '_') && isDIGIT(pos[1])) | |
3804 | s = ++pos; | |
3805 | else if ( isDIGIT(*pos) ) | |
3806 | s = pos; | |
b0f01acb | 3807 | else { |
ad63d80f JP |
3808 | s = pos; |
3809 | break; | |
3810 | } | |
3811 | while ( isDIGIT(*pos) ) { | |
46314c13 | 3812 | if ( !saw_under && saw_period == 1 && pos-s == 3 ) |
ad63d80f JP |
3813 | break; |
3814 | pos++; | |
b0f01acb JP |
3815 | } |
3816 | } | |
3817 | } | |
ad63d80f | 3818 | return s; |
b0f01acb JP |
3819 | } |
3820 | ||
3821 | /* | |
3822 | =for apidoc new_version | |
3823 | ||
3824 | Returns a new version object based on the passed in SV: | |
3825 | ||
3826 | SV *sv = new_version(SV *ver); | |
3827 | ||
3828 | Does not alter the passed in ver SV. See "upg_version" if you | |
3829 | want to upgrade the SV. | |
3830 | ||
3831 | =cut | |
3832 | */ | |
3833 | ||
3834 | SV * | |
3835 | Perl_new_version(pTHX_ SV *ver) | |
3836 | { | |
129318bd | 3837 | SV *rv = newSV(0); |
26ec6fc3 JP |
3838 | char *version; |
3839 | if ( SvNOK(ver) ) /* may get too much accuracy */ | |
3840 | { | |
3841 | char tbuf[64]; | |
3842 | sprintf(tbuf,"%.9"NVgf, SvNVX(ver)); | |
3843 | version = savepv(tbuf); | |
3844 | } | |
ad63d80f | 3845 | #ifdef SvVOK |
26ec6fc3 | 3846 | else if ( SvVOK(ver) ) { /* already a v-string */ |
b0f01acb JP |
3847 | MAGIC* mg = mg_find(ver,PERL_MAGIC_vstring); |
3848 | version = savepvn( (const char*)mg->mg_ptr,mg->mg_len ); | |
3849 | } | |
ad63d80f | 3850 | #endif |
129318bd | 3851 | else /* must be a string or something like a string */ |
26ec6fc3 JP |
3852 | { |
3853 | version = (char *)SvPV(ver,PL_na); | |
3854 | } | |
b0f01acb JP |
3855 | version = scan_version(version,rv); |
3856 | return rv; | |
3857 | } | |
3858 | ||
3859 | /* | |
3860 | =for apidoc upg_version | |
3861 | ||
3862 | In-place upgrade of the supplied SV to a version object. | |
3863 | ||
3864 | SV *sv = upg_version(SV *sv); | |
3865 | ||
3866 | Returns a pointer to the upgraded SV. | |
3867 | ||
3868 | =cut | |
3869 | */ | |
3870 | ||
3871 | SV * | |
ad63d80f | 3872 | Perl_upg_version(pTHX_ SV *ver) |
b0f01acb | 3873 | { |
ad63d80f JP |
3874 | char *version = savepvn(SvPVX(ver),SvCUR(ver)); |
3875 | #ifdef SvVOK | |
3876 | if ( SvVOK(ver) ) { /* already a v-string */ | |
3877 | MAGIC* mg = mg_find(ver,PERL_MAGIC_vstring); | |
3878 | version = savepvn( (const char*)mg->mg_ptr,mg->mg_len ); | |
b0f01acb | 3879 | } |
ad63d80f JP |
3880 | #endif |
3881 | version = scan_version(version,ver); | |
3882 | return ver; | |
b0f01acb JP |
3883 | } |
3884 | ||
3885 | ||
3886 | /* | |
3887 | =for apidoc vnumify | |
3888 | ||
ad63d80f JP |
3889 | Accepts a version object and returns the normalized floating |
3890 | point representation. Call like: | |
b0f01acb | 3891 | |
ad63d80f | 3892 | sv = vnumify(rv); |
b0f01acb | 3893 | |
ad63d80f JP |
3894 | NOTE: you can pass either the object directly or the SV |
3895 | contained within the RV. | |
b0f01acb JP |
3896 | |
3897 | =cut | |
3898 | */ | |
3899 | ||
3900 | SV * | |
ad63d80f | 3901 | Perl_vnumify(pTHX_ SV *vs) |
b0f01acb | 3902 | { |
ad63d80f JP |
3903 | I32 i, len, digit; |
3904 | SV *sv = NEWSV(92,0); | |
3905 | if ( SvROK(vs) ) | |
3906 | vs = SvRV(vs); | |
3907 | len = av_len((AV *)vs); | |
46314c13 JP |
3908 | if ( len == -1 ) |
3909 | { | |
3910 | Perl_sv_catpv(aTHX_ sv,"0"); | |
3911 | return sv; | |
3912 | } | |
ad63d80f | 3913 | digit = SvIVX(*av_fetch((AV *)vs, 0, 0)); |
32fdb065 | 3914 | Perl_sv_setpvf(aTHX_ sv,"%d.", PERL_ABS(digit)); |
ad63d80f | 3915 | for ( i = 1 ; i <= len ; i++ ) |
b0f01acb | 3916 | { |
ad63d80f | 3917 | digit = SvIVX(*av_fetch((AV *)vs, i, 0)); |
32fdb065 | 3918 | Perl_sv_catpvf(aTHX_ sv,"%03d", PERL_ABS(digit)); |
b0f01acb | 3919 | } |
ad63d80f JP |
3920 | if ( len == 0 ) |
3921 | Perl_sv_catpv(aTHX_ sv,"000"); | |
129318bd | 3922 | sv_setnv(sv, SvNV(sv)); |
b0f01acb JP |
3923 | return sv; |
3924 | } | |
3925 | ||
3926 | /* | |
3927 | =for apidoc vstringify | |
3928 | ||
ad63d80f JP |
3929 | Accepts a version object and returns the normalized string |
3930 | representation. Call like: | |
b0f01acb | 3931 | |
ad63d80f | 3932 | sv = vstringify(rv); |
b0f01acb | 3933 | |
ad63d80f JP |
3934 | NOTE: you can pass either the object directly or the SV |
3935 | contained within the RV. | |
b0f01acb JP |
3936 | |
3937 | =cut | |
3938 | */ | |
3939 | ||
3940 | SV * | |
ad63d80f | 3941 | Perl_vstringify(pTHX_ SV *vs) |
b0f01acb | 3942 | { |
ad63d80f JP |
3943 | I32 i, len, digit; |
3944 | SV *sv = NEWSV(92,0); | |
3945 | if ( SvROK(vs) ) | |
3946 | vs = SvRV(vs); | |
3947 | len = av_len((AV *)vs); | |
46314c13 JP |
3948 | if ( len == -1 ) |
3949 | { | |
3950 | Perl_sv_catpv(aTHX_ sv,""); | |
3951 | return sv; | |
3952 | } | |
ad63d80f | 3953 | digit = SvIVX(*av_fetch((AV *)vs, 0, 0)); |
e3feee4e | 3954 | Perl_sv_setpvf(aTHX_ sv,"%"IVdf,(IV)digit); |
ad63d80f | 3955 | for ( i = 1 ; i <= len ; i++ ) |
46314c13 | 3956 | { |
ad63d80f JP |
3957 | digit = SvIVX(*av_fetch((AV *)vs, i, 0)); |
3958 | if ( digit < 0 ) | |
e3feee4e | 3959 | Perl_sv_catpvf(aTHX_ sv,"_%"IVdf,(IV)-digit); |
ad63d80f | 3960 | else |
e3feee4e | 3961 | Perl_sv_catpvf(aTHX_ sv,".%"IVdf,(IV)digit); |
b0f01acb | 3962 | } |
ad63d80f JP |
3963 | if ( len == 0 ) |
3964 | Perl_sv_catpv(aTHX_ sv,".0"); | |
b0f01acb | 3965 | return sv; |
129318bd | 3966 | } |
b0f01acb | 3967 | |
ad63d80f JP |
3968 | /* |
3969 | =for apidoc vcmp | |
3970 | ||
3971 | Version object aware cmp. Both operands must already have been | |
3972 | converted into version objects. | |
3973 | ||
3974 | =cut | |
3975 | */ | |
3976 | ||
3977 | int | |
3978 | Perl_vcmp(pTHX_ SV *lsv, SV *rsv) | |
3979 | { | |
3980 | I32 i,l,m,r,retval; | |
3981 | if ( SvROK(lsv) ) | |
3982 | lsv = SvRV(lsv); | |
3983 | if ( SvROK(rsv) ) | |
3984 | rsv = SvRV(rsv); | |
3985 | l = av_len((AV *)lsv); | |
3986 | r = av_len((AV *)rsv); | |
3987 | m = l < r ? l : r; | |
3988 | retval = 0; | |
3989 | i = 0; | |
3990 | while ( i <= m && retval == 0 ) | |
3991 | { | |
3992 | I32 left = SvIV(*av_fetch((AV *)lsv,i,0)); | |
3993 | I32 right = SvIV(*av_fetch((AV *)rsv,i,0)); | |
3994 | bool lbeta = left < 0 ? 1 : 0; | |
3995 | bool rbeta = right < 0 ? 1 : 0; | |
32fdb065 JH |
3996 | left = PERL_ABS(left); |
3997 | right = PERL_ABS(right); | |
ad63d80f JP |
3998 | if ( left < right || (left == right && lbeta && !rbeta) ) |
3999 | retval = -1; | |
4000 | if ( left > right || (left == right && rbeta && !lbeta) ) | |
4001 | retval = +1; | |
4002 | i++; | |
4003 | } | |
4004 | ||
129318bd JP |
4005 | if ( l != r && retval == 0 ) /* possible match except for trailing 0 */ |
4006 | { | |
4007 | if ( !( l < r && r-l == 1 && SvIV(*av_fetch((AV *)rsv,r,0)) == 0 ) && | |
4008 | !( l-r == 1 && SvIV(*av_fetch((AV *)lsv,l,0)) == 0 ) ) | |
4009 | { | |
4010 | retval = l < r ? -1 : +1; /* not a match after all */ | |
4011 | } | |
4012 | } | |
ad63d80f JP |
4013 | return retval; |
4014 | } | |
4015 | ||
c95c94b1 | 4016 | #if !defined(HAS_SOCKETPAIR) && defined(HAS_SOCKET) && defined(AF_INET) && defined(PF_INET) && defined(SOCK_DGRAM) && defined(HAS_SELECT) |
2bc69dc4 NIS |
4017 | # define EMULATE_SOCKETPAIR_UDP |
4018 | #endif | |
4019 | ||
4020 | #ifdef EMULATE_SOCKETPAIR_UDP | |
02fc2eee NC |
4021 | static int |
4022 | S_socketpair_udp (int fd[2]) { | |
e10bb1e9 | 4023 | dTHX; |
02fc2eee NC |
4024 | /* Fake a datagram socketpair using UDP to localhost. */ |
4025 | int sockets[2] = {-1, -1}; | |
4026 | struct sockaddr_in addresses[2]; | |
4027 | int i; | |
3aed30dc | 4028 | Sock_size_t size = sizeof(struct sockaddr_in); |
ae92b34e | 4029 | unsigned short port; |
02fc2eee NC |
4030 | int got; |
4031 | ||
3aed30dc | 4032 | memset(&addresses, 0, sizeof(addresses)); |
02fc2eee NC |
4033 | i = 1; |
4034 | do { | |
3aed30dc HS |
4035 | sockets[i] = PerlSock_socket(AF_INET, SOCK_DGRAM, PF_INET); |
4036 | if (sockets[i] == -1) | |
4037 | goto tidy_up_and_fail; | |
4038 | ||
4039 | addresses[i].sin_family = AF_INET; | |
4040 | addresses[i].sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
4041 | addresses[i].sin_port = 0; /* kernel choses port. */ | |
4042 | if (PerlSock_bind(sockets[i], (struct sockaddr *) &addresses[i], | |
4043 | sizeof(struct sockaddr_in)) == -1) | |
4044 | goto tidy_up_and_fail; | |
02fc2eee NC |
4045 | } while (i--); |
4046 | ||
4047 | /* Now have 2 UDP sockets. Find out which port each is connected to, and | |
4048 | for each connect the other socket to it. */ | |
4049 | i = 1; | |
4050 | do { | |
3aed30dc HS |
4051 | if (PerlSock_getsockname(sockets[i], (struct sockaddr *) &addresses[i], |
4052 | &size) == -1) | |
4053 | goto tidy_up_and_fail; | |
4054 | if (size != sizeof(struct sockaddr_in)) | |
4055 | goto abort_tidy_up_and_fail; | |
4056 | /* !1 is 0, !0 is 1 */ | |
4057 | if (PerlSock_connect(sockets[!i], (struct sockaddr *) &addresses[i], | |
4058 | sizeof(struct sockaddr_in)) == -1) | |
4059 | goto tidy_up_and_fail; | |
02fc2eee NC |
4060 | } while (i--); |
4061 | ||
4062 | /* Now we have 2 sockets connected to each other. I don't trust some other | |
4063 | process not to have already sent a packet to us (by random) so send | |
4064 | a packet from each to the other. */ | |
4065 | i = 1; | |
4066 | do { | |
3aed30dc HS |
4067 | /* I'm going to send my own port number. As a short. |
4068 | (Who knows if someone somewhere has sin_port as a bitfield and needs | |
4069 | this routine. (I'm assuming crays have socketpair)) */ | |
4070 | port = addresses[i].sin_port; | |
4071 | got = PerlLIO_write(sockets[i], &port, sizeof(port)); | |
4072 | if (got != sizeof(port)) { | |
4073 | if (got == -1) | |
4074 | goto tidy_up_and_fail; | |
4075 | goto abort_tidy_up_and_fail; | |
4076 | } | |
02fc2eee NC |
4077 | } while (i--); |
4078 | ||
4079 | /* Packets sent. I don't trust them to have arrived though. | |
4080 | (As I understand it Solaris TCP stack is multithreaded. Non-blocking | |
4081 | connect to localhost will use a second kernel thread. In 2.6 the | |
4082 | first thread running the connect() returns before the second completes, | |
4083 | so EINPROGRESS> In 2.7 the improved stack is faster and connect() | |
4084 | returns 0. Poor programs have tripped up. One poor program's authors' | |
4085 | had a 50-1 reverse stock split. Not sure how connected these were.) | |
4086 | So I don't trust someone not to have an unpredictable UDP stack. | |
4087 | */ | |
4088 | ||
4089 | { | |
3aed30dc HS |
4090 | struct timeval waitfor = {0, 100000}; /* You have 0.1 seconds */ |
4091 | int max = sockets[1] > sockets[0] ? sockets[1] : sockets[0]; | |
4092 | fd_set rset; | |
4093 | ||
4094 | FD_ZERO(&rset); | |
4095 | FD_SET(sockets[0], &rset); | |
4096 | FD_SET(sockets[1], &rset); | |
4097 | ||
4098 | got = PerlSock_select(max + 1, &rset, NULL, NULL, &waitfor); | |
4099 | if (got != 2 || !FD_ISSET(sockets[0], &rset) | |
4100 | || !FD_ISSET(sockets[1], &rset)) { | |
4101 | /* I hope this is portable and appropriate. */ | |
4102 | if (got == -1) | |
4103 | goto tidy_up_and_fail; | |
4104 | goto abort_tidy_up_and_fail; | |
4105 | } | |
02fc2eee | 4106 | } |
f4758303 | 4107 | |
02fc2eee NC |
4108 | /* And the paranoia department even now doesn't trust it to have arrive |
4109 | (hence MSG_DONTWAIT). Or that what arrives was sent by us. */ | |
4110 | { | |
3aed30dc HS |
4111 | struct sockaddr_in readfrom; |
4112 | unsigned short buffer[2]; | |
02fc2eee | 4113 | |
3aed30dc HS |
4114 | i = 1; |
4115 | do { | |
02fc2eee | 4116 | #ifdef MSG_DONTWAIT |
3aed30dc HS |
4117 | got = PerlSock_recvfrom(sockets[i], (char *) &buffer, |
4118 | sizeof(buffer), MSG_DONTWAIT, | |
4119 | (struct sockaddr *) &readfrom, &size); | |
02fc2eee | 4120 | #else |
3aed30dc HS |
4121 | got = PerlSock_recvfrom(sockets[i], (char *) &buffer, |
4122 | sizeof(buffer), 0, | |
4123 | (struct sockaddr *) &readfrom, &size); | |
e10bb1e9 | 4124 | #endif |
02fc2eee | 4125 | |
3aed30dc HS |
4126 | if (got == -1) |
4127 | goto tidy_up_and_fail; | |
4128 | if (got != sizeof(port) | |
4129 | || size != sizeof(struct sockaddr_in) | |
4130 | /* Check other socket sent us its port. */ | |
4131 | || buffer[0] != (unsigned short) addresses[!i].sin_port | |
4132 | /* Check kernel says we got the datagram from that socket */ | |
4133 | || readfrom.sin_family != addresses[!i].sin_family | |
4134 | || readfrom.sin_addr.s_addr != addresses[!i].sin_addr.s_addr | |
4135 | || readfrom.sin_port != addresses[!i].sin_port) | |
4136 | goto abort_tidy_up_and_fail; | |
4137 | } while (i--); | |
02fc2eee NC |
4138 | } |
4139 | /* My caller (my_socketpair) has validated that this is non-NULL */ | |
4140 | fd[0] = sockets[0]; | |
4141 | fd[1] = sockets[1]; | |
4142 | /* I hereby declare this connection open. May God bless all who cross | |
4143 | her. */ | |
4144 | return 0; | |
4145 | ||
4146 | abort_tidy_up_and_fail: | |
4147 | errno = ECONNABORTED; | |
4148 | tidy_up_and_fail: | |
4149 | { | |
3aed30dc HS |
4150 | int save_errno = errno; |
4151 | if (sockets[0] != -1) | |
4152 | PerlLIO_close(sockets[0]); | |
4153 | if (sockets[1] != -1) | |
4154 | PerlLIO_close(sockets[1]); | |
4155 | errno = save_errno; | |
4156 | return -1; | |
02fc2eee NC |
4157 | } |
4158 | } | |
85ca448a | 4159 | #endif /* EMULATE_SOCKETPAIR_UDP */ |
02fc2eee | 4160 | |
b5ac89c3 | 4161 | #if !defined(HAS_SOCKETPAIR) && defined(HAS_SOCKET) && defined(AF_INET) && defined(PF_INET) |
02fc2eee NC |
4162 | int |
4163 | Perl_my_socketpair (int family, int type, int protocol, int fd[2]) { | |
4164 | /* Stevens says that family must be AF_LOCAL, protocol 0. | |
2948e0bd | 4165 | I'm going to enforce that, then ignore it, and use TCP (or UDP). */ |
e10bb1e9 | 4166 | dTHX; |
02fc2eee NC |
4167 | int listener = -1; |
4168 | int connector = -1; | |
4169 | int acceptor = -1; | |
4170 | struct sockaddr_in listen_addr; | |
4171 | struct sockaddr_in connect_addr; | |
4172 | Sock_size_t size; | |
4173 | ||
50458334 JH |
4174 | if (protocol |
4175 | #ifdef AF_UNIX | |
4176 | || family != AF_UNIX | |
4177 | #endif | |
3aed30dc HS |
4178 | ) { |
4179 | errno = EAFNOSUPPORT; | |
4180 | return -1; | |
02fc2eee | 4181 | } |
2948e0bd | 4182 | if (!fd) { |
3aed30dc HS |
4183 | errno = EINVAL; |
4184 | return -1; | |
2948e0bd | 4185 | } |
02fc2eee | 4186 | |
2bc69dc4 | 4187 | #ifdef EMULATE_SOCKETPAIR_UDP |
02fc2eee | 4188 | if (type == SOCK_DGRAM) |
3aed30dc | 4189 | return S_socketpair_udp(fd); |
2bc69dc4 | 4190 | #endif |
02fc2eee | 4191 | |
3aed30dc | 4192 | listener = PerlSock_socket(AF_INET, type, 0); |
02fc2eee | 4193 | if (listener == -1) |
3aed30dc HS |
4194 | return -1; |
4195 | memset(&listen_addr, 0, sizeof(listen_addr)); | |
02fc2eee | 4196 | listen_addr.sin_family = AF_INET; |
3aed30dc | 4197 | listen_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); |
02fc2eee | 4198 | listen_addr.sin_port = 0; /* kernel choses port. */ |
3aed30dc HS |
4199 | if (PerlSock_bind(listener, (struct sockaddr *) &listen_addr, |
4200 | sizeof(listen_addr)) == -1) | |
4201 | goto tidy_up_and_fail; | |
e10bb1e9 | 4202 | if (PerlSock_listen(listener, 1) == -1) |
3aed30dc | 4203 | goto tidy_up_and_fail; |
02fc2eee | 4204 | |
3aed30dc | 4205 | connector = PerlSock_socket(AF_INET, type, 0); |
02fc2eee | 4206 | if (connector == -1) |
3aed30dc | 4207 | goto tidy_up_and_fail; |
02fc2eee | 4208 | /* We want to find out the port number to connect to. */ |
3aed30dc HS |
4209 | size = sizeof(connect_addr); |
4210 | if (PerlSock_getsockname(listener, (struct sockaddr *) &connect_addr, | |
4211 | &size) == -1) | |
4212 | goto tidy_up_and_fail; | |
4213 | if (size != sizeof(connect_addr)) | |
4214 | goto abort_tidy_up_and_fail; | |
e10bb1e9 | 4215 | if (PerlSock_connect(connector, (struct sockaddr *) &connect_addr, |
3aed30dc HS |
4216 | sizeof(connect_addr)) == -1) |
4217 | goto tidy_up_and_fail; | |
02fc2eee | 4218 | |
3aed30dc HS |
4219 | size = sizeof(listen_addr); |
4220 | acceptor = PerlSock_accept(listener, (struct sockaddr *) &listen_addr, | |
4221 | &size); | |
02fc2eee | 4222 | if (acceptor == -1) |
3aed30dc HS |
4223 | goto tidy_up_and_fail; |
4224 | if (size != sizeof(listen_addr)) | |
4225 | goto abort_tidy_up_and_fail; | |
4226 | PerlLIO_close(listener); | |
02fc2eee NC |
4227 | /* Now check we are talking to ourself by matching port and host on the |
4228 | two sockets. */ | |
3aed30dc HS |
4229 | if (PerlSock_getsockname(connector, (struct sockaddr *) &connect_addr, |
4230 | &size) == -1) | |
4231 | goto tidy_up_and_fail; | |
4232 | if (size != sizeof(connect_addr) | |
4233 | || listen_addr.sin_family != connect_addr.sin_family | |
4234 | || listen_addr.sin_addr.s_addr != connect_addr.sin_addr.s_addr | |
4235 | || listen_addr.sin_port != connect_addr.sin_port) { | |
4236 | goto abort_tidy_up_and_fail; | |
02fc2eee NC |
4237 | } |
4238 | fd[0] = connector; | |
4239 | fd[1] = acceptor; | |
4240 | return 0; | |
4241 | ||
4242 | abort_tidy_up_and_fail: | |
85ca448a | 4243 | errno = ECONNABORTED; /* I hope this is portable and appropriate. */ |
02fc2eee NC |
4244 | tidy_up_and_fail: |
4245 | { | |
3aed30dc HS |
4246 | int save_errno = errno; |
4247 | if (listener != -1) | |
4248 | PerlLIO_close(listener); | |
4249 | if (connector != -1) | |
4250 | PerlLIO_close(connector); | |
4251 | if (acceptor != -1) | |
4252 | PerlLIO_close(acceptor); | |
4253 | errno = save_errno; | |
4254 | return -1; | |
02fc2eee NC |
4255 | } |
4256 | } | |
85ca448a | 4257 | #else |
48ea76d1 JH |
4258 | /* In any case have a stub so that there's code corresponding |
4259 | * to the my_socketpair in global.sym. */ | |
4260 | int | |
4261 | Perl_my_socketpair (int family, int type, int protocol, int fd[2]) { | |
daf16542 | 4262 | #ifdef HAS_SOCKETPAIR |
48ea76d1 | 4263 | return socketpair(family, type, protocol, fd); |
daf16542 JH |
4264 | #else |
4265 | return -1; | |
4266 | #endif | |
48ea76d1 JH |
4267 | } |
4268 | #endif | |
4269 | ||
68795e93 NIS |
4270 | /* |
4271 | ||
4272 | =for apidoc sv_nosharing | |
4273 | ||
4274 | Dummy routine which "shares" an SV when there is no sharing module present. | |
4275 | Exists to avoid test for a NULL function pointer and because it could potentially warn under | |
4276 | some level of strict-ness. | |
4277 | ||
4278 | =cut | |
4279 | */ | |
4280 | ||
4281 | void | |
4282 | Perl_sv_nosharing(pTHX_ SV *sv) | |
4283 | { | |
4284 | } | |
4285 | ||
4286 | /* | |
4287 | =for apidoc sv_nolocking | |
4288 | ||
4289 | Dummy routine which "locks" an SV when there is no locking module present. | |
4290 | Exists to avoid test for a NULL function pointer and because it could potentially warn under | |
4291 | some level of strict-ness. | |
4292 | ||
4293 | =cut | |
4294 | */ | |
4295 | ||
4296 | void | |
4297 | Perl_sv_nolocking(pTHX_ SV *sv) | |
4298 | { | |
4299 | } | |
4300 | ||
4301 | ||
4302 | /* | |
4303 | =for apidoc sv_nounlocking | |
4304 | ||
4305 | Dummy routine which "unlocks" an SV when there is no locking module present. | |
4306 | Exists to avoid test for a NULL function pointer and because it could potentially warn under | |
4307 | some level of strict-ness. | |
4308 | ||
4309 | =cut | |
4310 | */ | |
4311 | ||
4312 | void | |
4313 | Perl_sv_nounlocking(pTHX_ SV *sv) | |
4314 | { | |
4315 | } | |
4316 | ||
a05d7ebb JH |
4317 | U32 |
4318 | Perl_parse_unicode_opts(pTHX_ char **popt) | |
4319 | { | |
4320 | char *p = *popt; | |
4321 | U32 opt = 0; | |
4322 | ||
4323 | if (*p) { | |
4324 | if (isDIGIT(*p)) { | |
4325 | opt = (U32) atoi(p); | |
4326 | while (isDIGIT(*p)) p++; | |
4327 | if (*p) | |
4328 | Perl_croak(aTHX_ "Unknown Unicode option letter '%c'", *p); | |
4329 | } | |
4330 | else { | |
4331 | for (; *p; p++) { | |
4332 | switch (*p) { | |
4333 | case PERL_UNICODE_STDIN: | |
4334 | opt |= PERL_UNICODE_STDIN_FLAG; break; | |
4335 | case PERL_UNICODE_STDOUT: | |
4336 | opt |= PERL_UNICODE_STDOUT_FLAG; break; | |
4337 | case PERL_UNICODE_STDERR: | |
4338 | opt |= PERL_UNICODE_STDERR_FLAG; break; | |
4339 | case PERL_UNICODE_STD: | |
4340 | opt |= PERL_UNICODE_STD_FLAG; break; | |
4341 | case PERL_UNICODE_IN: | |
4342 | opt |= PERL_UNICODE_IN_FLAG; break; | |
4343 | case PERL_UNICODE_OUT: | |
4344 | opt |= PERL_UNICODE_OUT_FLAG; break; | |
4345 | case PERL_UNICODE_INOUT: | |
4346 | opt |= PERL_UNICODE_INOUT_FLAG; break; | |
4347 | case PERL_UNICODE_LOCALE: | |
4348 | opt |= PERL_UNICODE_LOCALE_FLAG; break; | |
4349 | case PERL_UNICODE_ARGV: | |
4350 | opt |= PERL_UNICODE_ARGV_FLAG; break; | |
4351 | default: | |
4352 | Perl_croak(aTHX_ | |
4353 | "Unknown Unicode option letter '%c'", *p); | |
4354 | } | |
4355 | } | |
4356 | } | |
4357 | } | |
4358 | else | |
4359 | opt = PERL_UNICODE_DEFAULT_FLAGS; | |
4360 | ||
4361 | if (opt & ~PERL_UNICODE_ALL_FLAGS) | |
06e66572 | 4362 | Perl_croak(aTHX_ "Unknown Unicode option value %"UVuf, |
a05d7ebb JH |
4363 | (UV) (opt & ~PERL_UNICODE_ALL_FLAGS)); |
4364 | ||
4365 | *popt = p; | |
4366 | ||
4367 | return opt; | |
4368 | } | |
4369 |