Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* util.c |
a687059c | 2 | * |
1129b882 NC |
3 | * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
4 | * 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others | |
a687059c | 5 | * |
d48672a2 LW |
6 | * You may distribute under the terms of either the GNU General Public |
7 | * License or the Artistic License, as specified in the README file. | |
8d063cd8 | 8 | * |
8d063cd8 | 9 | */ |
a0d0e21e LW |
10 | |
11 | /* | |
4ac71550 TC |
12 | * 'Very useful, no doubt, that was to Saruman; yet it seems that he was |
13 | * not content.' --Gandalf to Pippin | |
14 | * | |
15 | * [p.598 of _The Lord of the Rings_, III/xi: "The Palantír"] | |
a0d0e21e | 16 | */ |
8d063cd8 | 17 | |
166f8a29 DM |
18 | /* This file contains assorted utility routines. |
19 | * Which is a polite way of saying any stuff that people couldn't think of | |
20 | * a better place for. Amongst other things, it includes the warning and | |
21 | * dieing stuff, plus wrappers for malloc code. | |
22 | */ | |
23 | ||
8d063cd8 | 24 | #include "EXTERN.h" |
864dbfa3 | 25 | #define PERL_IN_UTIL_C |
8d063cd8 | 26 | #include "perl.h" |
62b28dd9 | 27 | |
64ca3a65 | 28 | #ifndef PERL_MICRO |
a687059c | 29 | #include <signal.h> |
36477c24 | 30 | #ifndef SIG_ERR |
31 | # define SIG_ERR ((Sighandler_t) -1) | |
32 | #endif | |
64ca3a65 | 33 | #endif |
36477c24 | 34 | |
172d2248 OS |
35 | #ifdef __Lynx__ |
36 | /* Missing protos on LynxOS */ | |
37 | int putenv(char *); | |
38 | #endif | |
39 | ||
ff68c719 | 40 | #ifdef I_SYS_WAIT |
41 | # include <sys/wait.h> | |
42 | #endif | |
43 | ||
868439a2 JH |
44 | #ifdef HAS_SELECT |
45 | # ifdef I_SYS_SELECT | |
46 | # include <sys/select.h> | |
47 | # endif | |
48 | #endif | |
49 | ||
8d063cd8 | 50 | #define FLUSH |
8d063cd8 | 51 | |
16cebae2 GS |
52 | #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC) |
53 | # define FD_CLOEXEC 1 /* NeXT needs this */ | |
54 | #endif | |
55 | ||
a687059c LW |
56 | /* NOTE: Do not call the next three routines directly. Use the macros |
57 | * in handy.h, so that we can easily redefine everything to do tracking of | |
58 | * allocated hunks back to the original New to track down any memory leaks. | |
20cec16a | 59 | * XXX This advice seems to be widely ignored :-( --AD August 1996. |
a687059c LW |
60 | */ |
61 | ||
ca8d8976 NC |
62 | static char * |
63 | S_write_no_mem(pTHX) | |
64 | { | |
97aff369 | 65 | dVAR; |
ca8d8976 NC |
66 | /* Can't use PerlIO to write as it allocates memory */ |
67 | PerlLIO_write(PerlIO_fileno(Perl_error_log), | |
68 | PL_no_mem, strlen(PL_no_mem)); | |
69 | my_exit(1); | |
1f440eb2 | 70 | NORETURN_FUNCTION_END; |
ca8d8976 NC |
71 | } |
72 | ||
26fa51c3 AMS |
73 | /* paranoid version of system's malloc() */ |
74 | ||
bd4080b3 | 75 | Malloc_t |
4f63d024 | 76 | Perl_safesysmalloc(MEM_SIZE size) |
8d063cd8 | 77 | { |
54aff467 | 78 | dTHX; |
bd4080b3 | 79 | Malloc_t ptr; |
55497cff | 80 | #ifdef HAS_64K_LIMIT |
62b28dd9 | 81 | if (size > 0xffff) { |
bf49b057 | 82 | PerlIO_printf(Perl_error_log, |
16cebae2 | 83 | "Allocation too large: %lx\n", size) FLUSH; |
54aff467 | 84 | my_exit(1); |
62b28dd9 | 85 | } |
55497cff | 86 | #endif /* HAS_64K_LIMIT */ |
e8dda941 JD |
87 | #ifdef PERL_TRACK_MEMPOOL |
88 | size += sTHX; | |
89 | #endif | |
34de22dd LW |
90 | #ifdef DEBUGGING |
91 | if ((long)size < 0) | |
4f63d024 | 92 | Perl_croak_nocontext("panic: malloc"); |
34de22dd | 93 | #endif |
12ae5dfc | 94 | ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */ |
da927450 | 95 | PERL_ALLOC_CHECK(ptr); |
97835f67 | 96 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size)); |
bd61b366 | 97 | if (ptr != NULL) { |
e8dda941 | 98 | #ifdef PERL_TRACK_MEMPOOL |
7cb608b5 NC |
99 | struct perl_memory_debug_header *const header |
100 | = (struct perl_memory_debug_header *)ptr; | |
9a083ecf NC |
101 | #endif |
102 | ||
103 | #ifdef PERL_POISON | |
7e337ee0 | 104 | PoisonNew(((char *)ptr), size, char); |
9a083ecf | 105 | #endif |
7cb608b5 | 106 | |
9a083ecf | 107 | #ifdef PERL_TRACK_MEMPOOL |
7cb608b5 NC |
108 | header->interpreter = aTHX; |
109 | /* Link us into the list. */ | |
110 | header->prev = &PL_memory_debug_header; | |
111 | header->next = PL_memory_debug_header.next; | |
112 | PL_memory_debug_header.next = header; | |
113 | header->next->prev = header; | |
cd1541b2 | 114 | # ifdef PERL_POISON |
7cb608b5 | 115 | header->size = size; |
cd1541b2 | 116 | # endif |
e8dda941 JD |
117 | ptr = (Malloc_t)((char*)ptr+sTHX); |
118 | #endif | |
8d063cd8 | 119 | return ptr; |
e8dda941 | 120 | } |
3280af22 | 121 | else if (PL_nomemok) |
bd61b366 | 122 | return NULL; |
8d063cd8 | 123 | else { |
0bd48802 | 124 | return write_no_mem(); |
8d063cd8 LW |
125 | } |
126 | /*NOTREACHED*/ | |
127 | } | |
128 | ||
f2517201 | 129 | /* paranoid version of system's realloc() */ |
8d063cd8 | 130 | |
bd4080b3 | 131 | Malloc_t |
4f63d024 | 132 | Perl_safesysrealloc(Malloc_t where,MEM_SIZE size) |
8d063cd8 | 133 | { |
54aff467 | 134 | dTHX; |
bd4080b3 | 135 | Malloc_t ptr; |
9a34ef1d | 136 | #if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) && !defined(PERL_MICRO) |
6ad3d225 | 137 | Malloc_t PerlMem_realloc(); |
ecfc5424 | 138 | #endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */ |
8d063cd8 | 139 | |
a1d180c4 | 140 | #ifdef HAS_64K_LIMIT |
5f05dabc | 141 | if (size > 0xffff) { |
bf49b057 | 142 | PerlIO_printf(Perl_error_log, |
5f05dabc | 143 | "Reallocation too large: %lx\n", size) FLUSH; |
54aff467 | 144 | my_exit(1); |
5f05dabc | 145 | } |
55497cff | 146 | #endif /* HAS_64K_LIMIT */ |
7614df0c | 147 | if (!size) { |
f2517201 | 148 | safesysfree(where); |
7614df0c JD |
149 | return NULL; |
150 | } | |
151 | ||
378cc40b | 152 | if (!where) |
f2517201 | 153 | return safesysmalloc(size); |
e8dda941 JD |
154 | #ifdef PERL_TRACK_MEMPOOL |
155 | where = (Malloc_t)((char*)where-sTHX); | |
156 | size += sTHX; | |
7cb608b5 NC |
157 | { |
158 | struct perl_memory_debug_header *const header | |
159 | = (struct perl_memory_debug_header *)where; | |
160 | ||
161 | if (header->interpreter != aTHX) { | |
162 | Perl_croak_nocontext("panic: realloc from wrong pool"); | |
163 | } | |
164 | assert(header->next->prev == header); | |
165 | assert(header->prev->next == header); | |
cd1541b2 | 166 | # ifdef PERL_POISON |
7cb608b5 NC |
167 | if (header->size > size) { |
168 | const MEM_SIZE freed_up = header->size - size; | |
169 | char *start_of_freed = ((char *)where) + size; | |
7e337ee0 | 170 | PoisonFree(start_of_freed, freed_up, char); |
7cb608b5 NC |
171 | } |
172 | header->size = size; | |
cd1541b2 | 173 | # endif |
7cb608b5 | 174 | } |
e8dda941 | 175 | #endif |
34de22dd LW |
176 | #ifdef DEBUGGING |
177 | if ((long)size < 0) | |
4f63d024 | 178 | Perl_croak_nocontext("panic: realloc"); |
34de22dd | 179 | #endif |
12ae5dfc | 180 | ptr = (Malloc_t)PerlMem_realloc(where,size); |
da927450 | 181 | PERL_ALLOC_CHECK(ptr); |
a1d180c4 | 182 | |
4fd0a9b8 NC |
183 | /* MUST do this fixup first, before doing ANYTHING else, as anything else |
184 | might allocate memory/free/move memory, and until we do the fixup, it | |
185 | may well be chasing (and writing to) free memory. */ | |
e8dda941 | 186 | #ifdef PERL_TRACK_MEMPOOL |
4fd0a9b8 | 187 | if (ptr != NULL) { |
7cb608b5 NC |
188 | struct perl_memory_debug_header *const header |
189 | = (struct perl_memory_debug_header *)ptr; | |
190 | ||
9a083ecf NC |
191 | # ifdef PERL_POISON |
192 | if (header->size < size) { | |
193 | const MEM_SIZE fresh = size - header->size; | |
194 | char *start_of_fresh = ((char *)ptr) + size; | |
7e337ee0 | 195 | PoisonNew(start_of_fresh, fresh, char); |
9a083ecf NC |
196 | } |
197 | # endif | |
198 | ||
7cb608b5 NC |
199 | header->next->prev = header; |
200 | header->prev->next = header; | |
201 | ||
e8dda941 | 202 | ptr = (Malloc_t)((char*)ptr+sTHX); |
4fd0a9b8 | 203 | } |
e8dda941 | 204 | #endif |
4fd0a9b8 NC |
205 | |
206 | /* In particular, must do that fixup above before logging anything via | |
207 | *printf(), as it can reallocate memory, which can cause SEGVs. */ | |
208 | ||
209 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++)); | |
210 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size)); | |
211 | ||
212 | ||
213 | if (ptr != NULL) { | |
8d063cd8 | 214 | return ptr; |
e8dda941 | 215 | } |
3280af22 | 216 | else if (PL_nomemok) |
bd61b366 | 217 | return NULL; |
8d063cd8 | 218 | else { |
0bd48802 | 219 | return write_no_mem(); |
8d063cd8 LW |
220 | } |
221 | /*NOTREACHED*/ | |
222 | } | |
223 | ||
f2517201 | 224 | /* safe version of system's free() */ |
8d063cd8 | 225 | |
54310121 | 226 | Free_t |
4f63d024 | 227 | Perl_safesysfree(Malloc_t where) |
8d063cd8 | 228 | { |
e8dda941 | 229 | #if defined(PERL_IMPLICIT_SYS) || defined(PERL_TRACK_MEMPOOL) |
54aff467 | 230 | dTHX; |
97aff369 JH |
231 | #else |
232 | dVAR; | |
155aba94 | 233 | #endif |
97835f67 | 234 | DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++)); |
378cc40b | 235 | if (where) { |
e8dda941 JD |
236 | #ifdef PERL_TRACK_MEMPOOL |
237 | where = (Malloc_t)((char*)where-sTHX); | |
cd1541b2 | 238 | { |
7cb608b5 NC |
239 | struct perl_memory_debug_header *const header |
240 | = (struct perl_memory_debug_header *)where; | |
241 | ||
242 | if (header->interpreter != aTHX) { | |
243 | Perl_croak_nocontext("panic: free from wrong pool"); | |
244 | } | |
245 | if (!header->prev) { | |
cd1541b2 NC |
246 | Perl_croak_nocontext("panic: duplicate free"); |
247 | } | |
7cb608b5 NC |
248 | if (!(header->next) || header->next->prev != header |
249 | || header->prev->next != header) { | |
250 | Perl_croak_nocontext("panic: bad free"); | |
cd1541b2 | 251 | } |
7cb608b5 NC |
252 | /* Unlink us from the chain. */ |
253 | header->next->prev = header->prev; | |
254 | header->prev->next = header->next; | |
255 | # ifdef PERL_POISON | |
7e337ee0 | 256 | PoisonNew(where, header->size, char); |
cd1541b2 | 257 | # endif |
7cb608b5 NC |
258 | /* Trigger the duplicate free warning. */ |
259 | header->next = NULL; | |
260 | } | |
e8dda941 | 261 | #endif |
6ad3d225 | 262 | PerlMem_free(where); |
378cc40b | 263 | } |
8d063cd8 LW |
264 | } |
265 | ||
f2517201 | 266 | /* safe version of system's calloc() */ |
1050c9ca | 267 | |
bd4080b3 | 268 | Malloc_t |
4f63d024 | 269 | Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size) |
1050c9ca | 270 | { |
54aff467 | 271 | dTHX; |
bd4080b3 | 272 | Malloc_t ptr; |
ad7244db | 273 | MEM_SIZE total_size = 0; |
1050c9ca | 274 | |
ad7244db | 275 | /* Even though calloc() for zero bytes is strange, be robust. */ |
19a94d75 | 276 | if (size && (count <= MEM_SIZE_MAX / size)) |
ad7244db JH |
277 | total_size = size * count; |
278 | else | |
f1f66076 | 279 | Perl_croak_nocontext("%s", PL_memory_wrap); |
ad7244db | 280 | #ifdef PERL_TRACK_MEMPOOL |
19a94d75 | 281 | if (sTHX <= MEM_SIZE_MAX - (MEM_SIZE)total_size) |
ad7244db JH |
282 | total_size += sTHX; |
283 | else | |
f1f66076 | 284 | Perl_croak_nocontext("%s", PL_memory_wrap); |
ad7244db | 285 | #endif |
55497cff | 286 | #ifdef HAS_64K_LIMIT |
e1a95402 | 287 | if (total_size > 0xffff) { |
bf49b057 | 288 | PerlIO_printf(Perl_error_log, |
e1a95402 | 289 | "Allocation too large: %lx\n", total_size) FLUSH; |
54aff467 | 290 | my_exit(1); |
5f05dabc | 291 | } |
55497cff | 292 | #endif /* HAS_64K_LIMIT */ |
1050c9ca | 293 | #ifdef DEBUGGING |
294 | if ((long)size < 0 || (long)count < 0) | |
4f63d024 | 295 | Perl_croak_nocontext("panic: calloc"); |
1050c9ca | 296 | #endif |
e8dda941 | 297 | #ifdef PERL_TRACK_MEMPOOL |
e1a95402 NC |
298 | /* Have to use malloc() because we've added some space for our tracking |
299 | header. */ | |
ad7244db JH |
300 | /* malloc(0) is non-portable. */ |
301 | ptr = (Malloc_t)PerlMem_malloc(total_size ? total_size : 1); | |
e1a95402 NC |
302 | #else |
303 | /* Use calloc() because it might save a memset() if the memory is fresh | |
304 | and clean from the OS. */ | |
ad7244db JH |
305 | if (count && size) |
306 | ptr = (Malloc_t)PerlMem_calloc(count, size); | |
307 | else /* calloc(0) is non-portable. */ | |
308 | ptr = (Malloc_t)PerlMem_calloc(count ? count : 1, size ? size : 1); | |
e8dda941 | 309 | #endif |
da927450 | 310 | PERL_ALLOC_CHECK(ptr); |
e1a95402 | 311 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) calloc %ld x %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)count,(long)total_size)); |
bd61b366 | 312 | if (ptr != NULL) { |
e8dda941 | 313 | #ifdef PERL_TRACK_MEMPOOL |
7cb608b5 NC |
314 | { |
315 | struct perl_memory_debug_header *const header | |
316 | = (struct perl_memory_debug_header *)ptr; | |
317 | ||
e1a95402 | 318 | memset((void*)ptr, 0, total_size); |
7cb608b5 NC |
319 | header->interpreter = aTHX; |
320 | /* Link us into the list. */ | |
321 | header->prev = &PL_memory_debug_header; | |
322 | header->next = PL_memory_debug_header.next; | |
323 | PL_memory_debug_header.next = header; | |
324 | header->next->prev = header; | |
cd1541b2 | 325 | # ifdef PERL_POISON |
e1a95402 | 326 | header->size = total_size; |
cd1541b2 | 327 | # endif |
7cb608b5 NC |
328 | ptr = (Malloc_t)((char*)ptr+sTHX); |
329 | } | |
e8dda941 | 330 | #endif |
1050c9ca | 331 | return ptr; |
332 | } | |
3280af22 | 333 | else if (PL_nomemok) |
bd61b366 | 334 | return NULL; |
0bd48802 | 335 | return write_no_mem(); |
1050c9ca | 336 | } |
337 | ||
cae6d0e5 GS |
338 | /* These must be defined when not using Perl's malloc for binary |
339 | * compatibility */ | |
340 | ||
341 | #ifndef MYMALLOC | |
342 | ||
343 | Malloc_t Perl_malloc (MEM_SIZE nbytes) | |
344 | { | |
345 | dTHXs; | |
077a72a9 | 346 | return (Malloc_t)PerlMem_malloc(nbytes); |
cae6d0e5 GS |
347 | } |
348 | ||
349 | Malloc_t Perl_calloc (MEM_SIZE elements, MEM_SIZE size) | |
350 | { | |
351 | dTHXs; | |
077a72a9 | 352 | return (Malloc_t)PerlMem_calloc(elements, size); |
cae6d0e5 GS |
353 | } |
354 | ||
355 | Malloc_t Perl_realloc (Malloc_t where, MEM_SIZE nbytes) | |
356 | { | |
357 | dTHXs; | |
077a72a9 | 358 | return (Malloc_t)PerlMem_realloc(where, nbytes); |
cae6d0e5 GS |
359 | } |
360 | ||
361 | Free_t Perl_mfree (Malloc_t where) | |
362 | { | |
363 | dTHXs; | |
364 | PerlMem_free(where); | |
365 | } | |
366 | ||
367 | #endif | |
368 | ||
8d063cd8 LW |
369 | /* copy a string up to some (non-backslashed) delimiter, if any */ |
370 | ||
371 | char * | |
04c9e624 | 372 | Perl_delimcpy(register char *to, register const char *toend, register const char *from, register const char *fromend, register int delim, I32 *retlen) |
8d063cd8 | 373 | { |
fc36a67e | 374 | register I32 tolen; |
35da51f7 | 375 | |
7918f24d NC |
376 | PERL_ARGS_ASSERT_DELIMCPY; |
377 | ||
fc36a67e | 378 | for (tolen = 0; from < fromend; from++, tolen++) { |
378cc40b | 379 | if (*from == '\\') { |
35da51f7 | 380 | if (from[1] != delim) { |
fc36a67e | 381 | if (to < toend) |
382 | *to++ = *from; | |
383 | tolen++; | |
fc36a67e | 384 | } |
35da51f7 | 385 | from++; |
378cc40b | 386 | } |
bedebaa5 | 387 | else if (*from == delim) |
8d063cd8 | 388 | break; |
fc36a67e | 389 | if (to < toend) |
390 | *to++ = *from; | |
8d063cd8 | 391 | } |
bedebaa5 CS |
392 | if (to < toend) |
393 | *to = '\0'; | |
fc36a67e | 394 | *retlen = tolen; |
73d840c0 | 395 | return (char *)from; |
8d063cd8 LW |
396 | } |
397 | ||
398 | /* return ptr to little string in big string, NULL if not found */ | |
378cc40b | 399 | /* This routine was donated by Corey Satten. */ |
8d063cd8 LW |
400 | |
401 | char * | |
04c9e624 | 402 | Perl_instr(register const char *big, register const char *little) |
378cc40b | 403 | { |
79072805 | 404 | register I32 first; |
378cc40b | 405 | |
7918f24d NC |
406 | PERL_ARGS_ASSERT_INSTR; |
407 | ||
a687059c | 408 | if (!little) |
08105a92 | 409 | return (char*)big; |
a687059c | 410 | first = *little++; |
378cc40b | 411 | if (!first) |
08105a92 | 412 | return (char*)big; |
378cc40b | 413 | while (*big) { |
66a1b24b | 414 | register const char *s, *x; |
378cc40b LW |
415 | if (*big++ != first) |
416 | continue; | |
417 | for (x=big,s=little; *s; /**/ ) { | |
418 | if (!*x) | |
bd61b366 | 419 | return NULL; |
4fc877ac | 420 | if (*s != *x) |
378cc40b | 421 | break; |
4fc877ac AL |
422 | else { |
423 | s++; | |
424 | x++; | |
378cc40b LW |
425 | } |
426 | } | |
427 | if (!*s) | |
08105a92 | 428 | return (char*)(big-1); |
378cc40b | 429 | } |
bd61b366 | 430 | return NULL; |
378cc40b | 431 | } |
8d063cd8 | 432 | |
a687059c LW |
433 | /* same as instr but allow embedded nulls */ |
434 | ||
435 | char * | |
04c9e624 | 436 | Perl_ninstr(const char *big, const char *bigend, const char *little, const char *lend) |
8d063cd8 | 437 | { |
7918f24d | 438 | PERL_ARGS_ASSERT_NINSTR; |
4c8626be GA |
439 | if (little >= lend) |
440 | return (char*)big; | |
441 | { | |
8ba22ff4 | 442 | const char first = *little; |
4c8626be | 443 | const char *s, *x; |
8ba22ff4 | 444 | bigend -= lend - little++; |
4c8626be GA |
445 | OUTER: |
446 | while (big <= bigend) { | |
b0ca24ee JH |
447 | if (*big++ == first) { |
448 | for (x=big,s=little; s < lend; x++,s++) { | |
449 | if (*s != *x) | |
450 | goto OUTER; | |
451 | } | |
452 | return (char*)(big-1); | |
4c8626be | 453 | } |
4c8626be | 454 | } |
378cc40b | 455 | } |
bd61b366 | 456 | return NULL; |
a687059c LW |
457 | } |
458 | ||
459 | /* reverse of the above--find last substring */ | |
460 | ||
461 | char * | |
04c9e624 | 462 | Perl_rninstr(register const char *big, const char *bigend, const char *little, const char *lend) |
a687059c | 463 | { |
08105a92 | 464 | register const char *bigbeg; |
e1ec3a88 | 465 | register const I32 first = *little; |
7452cf6a | 466 | register const char * const littleend = lend; |
a687059c | 467 | |
7918f24d NC |
468 | PERL_ARGS_ASSERT_RNINSTR; |
469 | ||
260d78c9 | 470 | if (little >= littleend) |
08105a92 | 471 | return (char*)bigend; |
a687059c LW |
472 | bigbeg = big; |
473 | big = bigend - (littleend - little++); | |
474 | while (big >= bigbeg) { | |
66a1b24b | 475 | register const char *s, *x; |
a687059c LW |
476 | if (*big-- != first) |
477 | continue; | |
478 | for (x=big+2,s=little; s < littleend; /**/ ) { | |
4fc877ac | 479 | if (*s != *x) |
a687059c | 480 | break; |
4fc877ac AL |
481 | else { |
482 | x++; | |
483 | s++; | |
a687059c LW |
484 | } |
485 | } | |
486 | if (s >= littleend) | |
08105a92 | 487 | return (char*)(big+1); |
378cc40b | 488 | } |
bd61b366 | 489 | return NULL; |
378cc40b | 490 | } |
a687059c | 491 | |
cf93c79d IZ |
492 | /* As a space optimization, we do not compile tables for strings of length |
493 | 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are | |
494 | special-cased in fbm_instr(). | |
495 | ||
496 | If FBMcf_TAIL, the table is created as if the string has a trailing \n. */ | |
497 | ||
954c1994 | 498 | /* |
ccfc67b7 JH |
499 | =head1 Miscellaneous Functions |
500 | ||
954c1994 GS |
501 | =for apidoc fbm_compile |
502 | ||
503 | Analyses the string in order to make fast searches on it using fbm_instr() | |
504 | -- the Boyer-Moore algorithm. | |
505 | ||
506 | =cut | |
507 | */ | |
508 | ||
378cc40b | 509 | void |
7506f9c3 | 510 | Perl_fbm_compile(pTHX_ SV *sv, U32 flags) |
378cc40b | 511 | { |
97aff369 | 512 | dVAR; |
0d46e09a | 513 | register const U8 *s; |
79072805 | 514 | register U32 i; |
0b71040e | 515 | STRLEN len; |
cb742848 | 516 | U32 rarest = 0; |
79072805 LW |
517 | U32 frequency = 256; |
518 | ||
7918f24d NC |
519 | PERL_ARGS_ASSERT_FBM_COMPILE; |
520 | ||
c517dc2b | 521 | if (flags & FBMcf_TAIL) { |
890ce7af | 522 | MAGIC * const mg = SvUTF8(sv) && SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : NULL; |
396482e1 | 523 | sv_catpvs(sv, "\n"); /* Taken into account in fbm_instr() */ |
c517dc2b JH |
524 | if (mg && mg->mg_len >= 0) |
525 | mg->mg_len++; | |
526 | } | |
9cbe880b | 527 | s = (U8*)SvPV_force_mutable(sv, len); |
d1be9408 | 528 | if (len == 0) /* TAIL might be on a zero-length string. */ |
cf93c79d | 529 | return; |
cecf5685 | 530 | SvUPGRADE(sv, SVt_PVGV); |
78d0cf80 | 531 | SvIOK_off(sv); |
8eeaf79a NC |
532 | SvNOK_off(sv); |
533 | SvVALID_on(sv); | |
02128f11 | 534 | if (len > 2) { |
9cbe880b | 535 | const unsigned char *sb; |
66a1b24b | 536 | const U8 mlen = (len>255) ? 255 : (U8)len; |
890ce7af | 537 | register U8 *table; |
cf93c79d | 538 | |
d8419e03 NC |
539 | Sv_Grow(sv, len + 256 + PERL_FBM_TABLE_OFFSET); |
540 | table | |
541 | = (unsigned char*)(SvPVX_mutable(sv) + len + PERL_FBM_TABLE_OFFSET); | |
542 | s = table - 1 - PERL_FBM_TABLE_OFFSET; /* last char */ | |
7506f9c3 | 543 | memset((void*)table, mlen, 256); |
02128f11 | 544 | i = 0; |
7506f9c3 | 545 | sb = s - mlen + 1; /* first char (maybe) */ |
cf93c79d IZ |
546 | while (s >= sb) { |
547 | if (table[*s] == mlen) | |
7506f9c3 | 548 | table[*s] = (U8)i; |
cf93c79d IZ |
549 | s--, i++; |
550 | } | |
d0688fc4 NC |
551 | } else { |
552 | Sv_Grow(sv, len + PERL_FBM_TABLE_OFFSET); | |
378cc40b | 553 | } |
a0714e2c | 554 | sv_magic(sv, NULL, PERL_MAGIC_bm, NULL, 0); /* deep magic */ |
378cc40b | 555 | |
9cbe880b | 556 | s = (const unsigned char*)(SvPVX_const(sv)); /* deeper magic */ |
bbce6d69 | 557 | for (i = 0; i < len; i++) { |
22c35a8c | 558 | if (PL_freq[s[i]] < frequency) { |
bbce6d69 | 559 | rarest = i; |
22c35a8c | 560 | frequency = PL_freq[s[i]]; |
378cc40b LW |
561 | } |
562 | } | |
610460f9 | 563 | BmFLAGS(sv) = (U8)flags; |
79072805 | 564 | BmRARE(sv) = s[rarest]; |
44a10c71 | 565 | BmPREVIOUS(sv) = rarest; |
cf93c79d IZ |
566 | BmUSEFUL(sv) = 100; /* Initial value */ |
567 | if (flags & FBMcf_TAIL) | |
568 | SvTAIL_on(sv); | |
8eeaf79a NC |
569 | DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %lu\n", |
570 | BmRARE(sv),(unsigned long)BmPREVIOUS(sv))); | |
378cc40b LW |
571 | } |
572 | ||
cf93c79d IZ |
573 | /* If SvTAIL(littlestr), it has a fake '\n' at end. */ |
574 | /* If SvTAIL is actually due to \Z or \z, this gives false positives | |
575 | if multiline */ | |
576 | ||
954c1994 GS |
577 | /* |
578 | =for apidoc fbm_instr | |
579 | ||
580 | Returns the location of the SV in the string delimited by C<str> and | |
bd61b366 | 581 | C<strend>. It returns C<NULL> if the string can't be found. The C<sv> |
954c1994 GS |
582 | does not have to be fbm_compiled, but the search will not be as fast |
583 | then. | |
584 | ||
585 | =cut | |
586 | */ | |
587 | ||
378cc40b | 588 | char * |
864dbfa3 | 589 | Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags) |
378cc40b | 590 | { |
a687059c | 591 | register unsigned char *s; |
cf93c79d | 592 | STRLEN l; |
9cbe880b NC |
593 | register const unsigned char *little |
594 | = (const unsigned char *)SvPV_const(littlestr,l); | |
cf93c79d | 595 | register STRLEN littlelen = l; |
e1ec3a88 | 596 | register const I32 multiline = flags & FBMrf_MULTILINE; |
cf93c79d | 597 | |
7918f24d NC |
598 | PERL_ARGS_ASSERT_FBM_INSTR; |
599 | ||
eb160463 | 600 | if ((STRLEN)(bigend - big) < littlelen) { |
a1d180c4 | 601 | if ( SvTAIL(littlestr) |
eb160463 | 602 | && ((STRLEN)(bigend - big) == littlelen - 1) |
a1d180c4 | 603 | && (littlelen == 1 |
12ae5dfc | 604 | || (*big == *little && |
27da23d5 | 605 | memEQ((char *)big, (char *)little, littlelen - 1)))) |
cf93c79d | 606 | return (char*)big; |
bd61b366 | 607 | return NULL; |
cf93c79d | 608 | } |
378cc40b | 609 | |
cf93c79d | 610 | if (littlelen <= 2) { /* Special-cased */ |
cf93c79d IZ |
611 | |
612 | if (littlelen == 1) { | |
613 | if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */ | |
614 | /* Know that bigend != big. */ | |
615 | if (bigend[-1] == '\n') | |
616 | return (char *)(bigend - 1); | |
617 | return (char *) bigend; | |
618 | } | |
619 | s = big; | |
620 | while (s < bigend) { | |
621 | if (*s == *little) | |
622 | return (char *)s; | |
623 | s++; | |
624 | } | |
625 | if (SvTAIL(littlestr)) | |
626 | return (char *) bigend; | |
bd61b366 | 627 | return NULL; |
cf93c79d IZ |
628 | } |
629 | if (!littlelen) | |
630 | return (char*)big; /* Cannot be SvTAIL! */ | |
631 | ||
632 | /* littlelen is 2 */ | |
633 | if (SvTAIL(littlestr) && !multiline) { | |
634 | if (bigend[-1] == '\n' && bigend[-2] == *little) | |
635 | return (char*)bigend - 2; | |
636 | if (bigend[-1] == *little) | |
637 | return (char*)bigend - 1; | |
bd61b366 | 638 | return NULL; |
cf93c79d IZ |
639 | } |
640 | { | |
641 | /* This should be better than FBM if c1 == c2, and almost | |
642 | as good otherwise: maybe better since we do less indirection. | |
643 | And we save a lot of memory by caching no table. */ | |
66a1b24b AL |
644 | const unsigned char c1 = little[0]; |
645 | const unsigned char c2 = little[1]; | |
cf93c79d IZ |
646 | |
647 | s = big + 1; | |
648 | bigend--; | |
649 | if (c1 != c2) { | |
650 | while (s <= bigend) { | |
651 | if (s[0] == c2) { | |
652 | if (s[-1] == c1) | |
653 | return (char*)s - 1; | |
654 | s += 2; | |
655 | continue; | |
3fe6f2dc | 656 | } |
cf93c79d IZ |
657 | next_chars: |
658 | if (s[0] == c1) { | |
659 | if (s == bigend) | |
660 | goto check_1char_anchor; | |
661 | if (s[1] == c2) | |
662 | return (char*)s; | |
663 | else { | |
664 | s++; | |
665 | goto next_chars; | |
666 | } | |
667 | } | |
668 | else | |
669 | s += 2; | |
670 | } | |
671 | goto check_1char_anchor; | |
672 | } | |
673 | /* Now c1 == c2 */ | |
674 | while (s <= bigend) { | |
675 | if (s[0] == c1) { | |
676 | if (s[-1] == c1) | |
677 | return (char*)s - 1; | |
678 | if (s == bigend) | |
679 | goto check_1char_anchor; | |
680 | if (s[1] == c1) | |
681 | return (char*)s; | |
682 | s += 3; | |
02128f11 | 683 | } |
c277df42 | 684 | else |
cf93c79d | 685 | s += 2; |
c277df42 | 686 | } |
c277df42 | 687 | } |
cf93c79d IZ |
688 | check_1char_anchor: /* One char and anchor! */ |
689 | if (SvTAIL(littlestr) && (*bigend == *little)) | |
690 | return (char *)bigend; /* bigend is already decremented. */ | |
bd61b366 | 691 | return NULL; |
d48672a2 | 692 | } |
cf93c79d | 693 | if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */ |
bbce6d69 | 694 | s = bigend - littlelen; |
a1d180c4 | 695 | if (s >= big && bigend[-1] == '\n' && *s == *little |
cf93c79d IZ |
696 | /* Automatically of length > 2 */ |
697 | && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2)) | |
7506f9c3 | 698 | { |
bbce6d69 | 699 | return (char*)s; /* how sweet it is */ |
7506f9c3 GS |
700 | } |
701 | if (s[1] == *little | |
702 | && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2)) | |
703 | { | |
cf93c79d | 704 | return (char*)s + 1; /* how sweet it is */ |
7506f9c3 | 705 | } |
bd61b366 | 706 | return NULL; |
02128f11 | 707 | } |
cecf5685 | 708 | if (!SvVALID(littlestr)) { |
c4420975 | 709 | char * const b = ninstr((char*)big,(char*)bigend, |
cf93c79d IZ |
710 | (char*)little, (char*)little + littlelen); |
711 | ||
712 | if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */ | |
713 | /* Chop \n from littlestr: */ | |
714 | s = bigend - littlelen + 1; | |
7506f9c3 GS |
715 | if (*s == *little |
716 | && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2)) | |
717 | { | |
3fe6f2dc | 718 | return (char*)s; |
7506f9c3 | 719 | } |
bd61b366 | 720 | return NULL; |
a687059c | 721 | } |
cf93c79d | 722 | return b; |
a687059c | 723 | } |
a1d180c4 | 724 | |
3566a07d NC |
725 | /* Do actual FBM. */ |
726 | if (littlelen > (STRLEN)(bigend - big)) | |
727 | return NULL; | |
728 | ||
729 | { | |
d8419e03 NC |
730 | register const unsigned char * const table |
731 | = little + littlelen + PERL_FBM_TABLE_OFFSET; | |
0d46e09a | 732 | register const unsigned char *oldlittle; |
cf93c79d | 733 | |
cf93c79d IZ |
734 | --littlelen; /* Last char found by table lookup */ |
735 | ||
736 | s = big + littlelen; | |
737 | little += littlelen; /* last char */ | |
738 | oldlittle = little; | |
739 | if (s < bigend) { | |
740 | register I32 tmp; | |
741 | ||
742 | top2: | |
7506f9c3 | 743 | if ((tmp = table[*s])) { |
cf93c79d | 744 | if ((s += tmp) < bigend) |
62b28dd9 | 745 | goto top2; |
cf93c79d IZ |
746 | goto check_end; |
747 | } | |
748 | else { /* less expensive than calling strncmp() */ | |
66a1b24b | 749 | register unsigned char * const olds = s; |
cf93c79d IZ |
750 | |
751 | tmp = littlelen; | |
752 | ||
753 | while (tmp--) { | |
754 | if (*--s == *--little) | |
755 | continue; | |
cf93c79d IZ |
756 | s = olds + 1; /* here we pay the price for failure */ |
757 | little = oldlittle; | |
758 | if (s < bigend) /* fake up continue to outer loop */ | |
759 | goto top2; | |
760 | goto check_end; | |
761 | } | |
762 | return (char *)s; | |
a687059c | 763 | } |
378cc40b | 764 | } |
cf93c79d | 765 | check_end: |
c8029a41 | 766 | if ( s == bigend |
8eeaf79a | 767 | && (BmFLAGS(littlestr) & FBMcf_TAIL) |
12ae5dfc JH |
768 | && memEQ((char *)(bigend - littlelen), |
769 | (char *)(oldlittle - littlelen), littlelen) ) | |
cf93c79d | 770 | return (char*)bigend - littlelen; |
bd61b366 | 771 | return NULL; |
378cc40b | 772 | } |
378cc40b LW |
773 | } |
774 | ||
c277df42 IZ |
775 | /* start_shift, end_shift are positive quantities which give offsets |
776 | of ends of some substring of bigstr. | |
a0288114 | 777 | If "last" we want the last occurrence. |
c277df42 | 778 | old_posp is the way of communication between consequent calls if |
a1d180c4 | 779 | the next call needs to find the . |
c277df42 | 780 | The initial *old_posp should be -1. |
cf93c79d IZ |
781 | |
782 | Note that we take into account SvTAIL, so one can get extra | |
783 | optimizations if _ALL flag is set. | |
c277df42 IZ |
784 | */ |
785 | ||
cf93c79d | 786 | /* If SvTAIL is actually due to \Z or \z, this gives false positives |
26fa51c3 | 787 | if PL_multiline. In fact if !PL_multiline the authoritative answer |
cf93c79d IZ |
788 | is not supported yet. */ |
789 | ||
378cc40b | 790 | char * |
864dbfa3 | 791 | Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last) |
378cc40b | 792 | { |
97aff369 | 793 | dVAR; |
0d46e09a | 794 | register const unsigned char *big; |
79072805 LW |
795 | register I32 pos; |
796 | register I32 previous; | |
797 | register I32 first; | |
0d46e09a | 798 | register const unsigned char *little; |
c277df42 | 799 | register I32 stop_pos; |
0d46e09a | 800 | register const unsigned char *littleend; |
c277df42 | 801 | I32 found = 0; |
378cc40b | 802 | |
7918f24d NC |
803 | PERL_ARGS_ASSERT_SCREAMINSTR; |
804 | ||
cecf5685 NC |
805 | assert(SvTYPE(littlestr) == SVt_PVGV); |
806 | assert(SvVALID(littlestr)); | |
d372c834 | 807 | |
c277df42 | 808 | if (*old_posp == -1 |
3280af22 | 809 | ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0 |
cf93c79d IZ |
810 | : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) { |
811 | cant_find: | |
a1d180c4 | 812 | if ( BmRARE(littlestr) == '\n' |
85c508c3 | 813 | && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) { |
cfd0369c | 814 | little = (const unsigned char *)(SvPVX_const(littlestr)); |
cf93c79d IZ |
815 | littleend = little + SvCUR(littlestr); |
816 | first = *little++; | |
817 | goto check_tail; | |
818 | } | |
bd61b366 | 819 | return NULL; |
cf93c79d IZ |
820 | } |
821 | ||
cfd0369c | 822 | little = (const unsigned char *)(SvPVX_const(littlestr)); |
79072805 | 823 | littleend = little + SvCUR(littlestr); |
378cc40b | 824 | first = *little++; |
c277df42 | 825 | /* The value of pos we can start at: */ |
79072805 | 826 | previous = BmPREVIOUS(littlestr); |
cfd0369c | 827 | big = (const unsigned char *)(SvPVX_const(bigstr)); |
c277df42 IZ |
828 | /* The value of pos we can stop at: */ |
829 | stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous); | |
cf93c79d | 830 | if (previous + start_shift > stop_pos) { |
0fe87f7c HS |
831 | /* |
832 | stop_pos does not include SvTAIL in the count, so this check is incorrect | |
833 | (I think) - see [ID 20010618.006] and t/op/study.t. HVDS 2001/06/19 | |
834 | */ | |
835 | #if 0 | |
cf93c79d IZ |
836 | if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */ |
837 | goto check_tail; | |
0fe87f7c | 838 | #endif |
bd61b366 | 839 | return NULL; |
cf93c79d | 840 | } |
c277df42 | 841 | while (pos < previous + start_shift) { |
3280af22 | 842 | if (!(pos += PL_screamnext[pos])) |
cf93c79d | 843 | goto cant_find; |
378cc40b | 844 | } |
de3bb511 | 845 | big -= previous; |
bbce6d69 | 846 | do { |
0d46e09a | 847 | register const unsigned char *s, *x; |
ef64f398 | 848 | if (pos >= stop_pos) break; |
bbce6d69 | 849 | if (big[pos] != first) |
850 | continue; | |
851 | for (x=big+pos+1,s=little; s < littleend; /**/ ) { | |
bbce6d69 | 852 | if (*s++ != *x++) { |
853 | s--; | |
854 | break; | |
378cc40b | 855 | } |
bbce6d69 | 856 | } |
c277df42 IZ |
857 | if (s == littleend) { |
858 | *old_posp = pos; | |
859 | if (!last) return (char *)(big+pos); | |
860 | found = 1; | |
861 | } | |
3280af22 | 862 | } while ( pos += PL_screamnext[pos] ); |
a1d180c4 | 863 | if (last && found) |
cf93c79d | 864 | return (char *)(big+(*old_posp)); |
cf93c79d IZ |
865 | check_tail: |
866 | if (!SvTAIL(littlestr) || (end_shift > 0)) | |
bd61b366 | 867 | return NULL; |
cf93c79d | 868 | /* Ignore the trailing "\n". This code is not microoptimized */ |
cfd0369c | 869 | big = (const unsigned char *)(SvPVX_const(bigstr) + SvCUR(bigstr)); |
cf93c79d IZ |
870 | stop_pos = littleend - little; /* Actual littlestr len */ |
871 | if (stop_pos == 0) | |
872 | return (char*)big; | |
873 | big -= stop_pos; | |
874 | if (*big == first | |
12ae5dfc JH |
875 | && ((stop_pos == 1) || |
876 | memEQ((char *)(big + 1), (char *)little, stop_pos - 1))) | |
cf93c79d | 877 | return (char*)big; |
bd61b366 | 878 | return NULL; |
8d063cd8 LW |
879 | } |
880 | ||
79072805 | 881 | I32 |
04c9e624 | 882 | Perl_ibcmp(const char *s1, const char *s2, register I32 len) |
79072805 | 883 | { |
e1ec3a88 AL |
884 | register const U8 *a = (const U8 *)s1; |
885 | register const U8 *b = (const U8 *)s2; | |
96a5add6 | 886 | |
7918f24d NC |
887 | PERL_ARGS_ASSERT_IBCMP; |
888 | ||
79072805 | 889 | while (len--) { |
22c35a8c | 890 | if (*a != *b && *a != PL_fold[*b]) |
bbce6d69 | 891 | return 1; |
892 | a++,b++; | |
893 | } | |
894 | return 0; | |
895 | } | |
896 | ||
897 | I32 | |
04c9e624 | 898 | Perl_ibcmp_locale(const char *s1, const char *s2, register I32 len) |
bbce6d69 | 899 | { |
27da23d5 | 900 | dVAR; |
e1ec3a88 AL |
901 | register const U8 *a = (const U8 *)s1; |
902 | register const U8 *b = (const U8 *)s2; | |
96a5add6 | 903 | |
7918f24d NC |
904 | PERL_ARGS_ASSERT_IBCMP_LOCALE; |
905 | ||
bbce6d69 | 906 | while (len--) { |
22c35a8c | 907 | if (*a != *b && *a != PL_fold_locale[*b]) |
bbce6d69 | 908 | return 1; |
909 | a++,b++; | |
79072805 LW |
910 | } |
911 | return 0; | |
912 | } | |
913 | ||
8d063cd8 LW |
914 | /* copy a string to a safe spot */ |
915 | ||
954c1994 | 916 | /* |
ccfc67b7 JH |
917 | =head1 Memory Management |
918 | ||
954c1994 GS |
919 | =for apidoc savepv |
920 | ||
61a925ed AMS |
921 | Perl's version of C<strdup()>. Returns a pointer to a newly allocated |
922 | string which is a duplicate of C<pv>. The size of the string is | |
923 | determined by C<strlen()>. The memory allocated for the new string can | |
924 | be freed with the C<Safefree()> function. | |
954c1994 GS |
925 | |
926 | =cut | |
927 | */ | |
928 | ||
8d063cd8 | 929 | char * |
efdfce31 | 930 | Perl_savepv(pTHX_ const char *pv) |
8d063cd8 | 931 | { |
96a5add6 | 932 | PERL_UNUSED_CONTEXT; |
e90e2364 | 933 | if (!pv) |
bd61b366 | 934 | return NULL; |
66a1b24b AL |
935 | else { |
936 | char *newaddr; | |
937 | const STRLEN pvlen = strlen(pv)+1; | |
10edeb5d JH |
938 | Newx(newaddr, pvlen, char); |
939 | return (char*)memcpy(newaddr, pv, pvlen); | |
66a1b24b | 940 | } |
8d063cd8 LW |
941 | } |
942 | ||
a687059c LW |
943 | /* same thing but with a known length */ |
944 | ||
954c1994 GS |
945 | /* |
946 | =for apidoc savepvn | |
947 | ||
61a925ed AMS |
948 | Perl's version of what C<strndup()> would be if it existed. Returns a |
949 | pointer to a newly allocated string which is a duplicate of the first | |
cbf82dd0 NC |
950 | C<len> bytes from C<pv>, plus a trailing NUL byte. The memory allocated for |
951 | the new string can be freed with the C<Safefree()> function. | |
954c1994 GS |
952 | |
953 | =cut | |
954 | */ | |
955 | ||
a687059c | 956 | char * |
efdfce31 | 957 | Perl_savepvn(pTHX_ const char *pv, register I32 len) |
a687059c LW |
958 | { |
959 | register char *newaddr; | |
96a5add6 | 960 | PERL_UNUSED_CONTEXT; |
a687059c | 961 | |
a02a5408 | 962 | Newx(newaddr,len+1,char); |
92110913 | 963 | /* Give a meaning to NULL pointer mainly for the use in sv_magic() */ |
efdfce31 | 964 | if (pv) { |
e90e2364 NC |
965 | /* might not be null terminated */ |
966 | newaddr[len] = '\0'; | |
07409e01 | 967 | return (char *) CopyD(pv,newaddr,len,char); |
92110913 NIS |
968 | } |
969 | else { | |
07409e01 | 970 | return (char *) ZeroD(newaddr,len+1,char); |
92110913 | 971 | } |
a687059c LW |
972 | } |
973 | ||
05ec9bb3 NIS |
974 | /* |
975 | =for apidoc savesharedpv | |
976 | ||
61a925ed AMS |
977 | A version of C<savepv()> which allocates the duplicate string in memory |
978 | which is shared between threads. | |
05ec9bb3 NIS |
979 | |
980 | =cut | |
981 | */ | |
982 | char * | |
efdfce31 | 983 | Perl_savesharedpv(pTHX_ const char *pv) |
05ec9bb3 | 984 | { |
e90e2364 | 985 | register char *newaddr; |
490a0e98 | 986 | STRLEN pvlen; |
e90e2364 | 987 | if (!pv) |
bd61b366 | 988 | return NULL; |
e90e2364 | 989 | |
490a0e98 NC |
990 | pvlen = strlen(pv)+1; |
991 | newaddr = (char*)PerlMemShared_malloc(pvlen); | |
e90e2364 | 992 | if (!newaddr) { |
0bd48802 | 993 | return write_no_mem(); |
05ec9bb3 | 994 | } |
10edeb5d | 995 | return (char*)memcpy(newaddr, pv, pvlen); |
05ec9bb3 NIS |
996 | } |
997 | ||
2e0de35c | 998 | /* |
d9095cec NC |
999 | =for apidoc savesharedpvn |
1000 | ||
1001 | A version of C<savepvn()> which allocates the duplicate string in memory | |
1002 | which is shared between threads. (With the specific difference that a NULL | |
1003 | pointer is not acceptable) | |
1004 | ||
1005 | =cut | |
1006 | */ | |
1007 | char * | |
1008 | Perl_savesharedpvn(pTHX_ const char *const pv, const STRLEN len) | |
1009 | { | |
1010 | char *const newaddr = (char*)PerlMemShared_malloc(len + 1); | |
7918f24d NC |
1011 | |
1012 | PERL_ARGS_ASSERT_SAVESHAREDPVN; | |
1013 | ||
d9095cec NC |
1014 | if (!newaddr) { |
1015 | return write_no_mem(); | |
1016 | } | |
1017 | newaddr[len] = '\0'; | |
1018 | return (char*)memcpy(newaddr, pv, len); | |
1019 | } | |
1020 | ||
1021 | /* | |
2e0de35c NC |
1022 | =for apidoc savesvpv |
1023 | ||
6832267f | 1024 | A version of C<savepv()>/C<savepvn()> which gets the string to duplicate from |
2e0de35c NC |
1025 | the passed in SV using C<SvPV()> |
1026 | ||
1027 | =cut | |
1028 | */ | |
1029 | ||
1030 | char * | |
1031 | Perl_savesvpv(pTHX_ SV *sv) | |
1032 | { | |
1033 | STRLEN len; | |
7452cf6a | 1034 | const char * const pv = SvPV_const(sv, len); |
2e0de35c NC |
1035 | register char *newaddr; |
1036 | ||
7918f24d NC |
1037 | PERL_ARGS_ASSERT_SAVESVPV; |
1038 | ||
26866f99 | 1039 | ++len; |
a02a5408 | 1040 | Newx(newaddr,len,char); |
07409e01 | 1041 | return (char *) CopyD(pv,newaddr,len,char); |
2e0de35c | 1042 | } |
05ec9bb3 NIS |
1043 | |
1044 | ||
cea2e8a9 | 1045 | /* the SV for Perl_form() and mess() is not kept in an arena */ |
fc36a67e | 1046 | |
76e3520e | 1047 | STATIC SV * |
cea2e8a9 | 1048 | S_mess_alloc(pTHX) |
fc36a67e | 1049 | { |
97aff369 | 1050 | dVAR; |
fc36a67e | 1051 | SV *sv; |
1052 | XPVMG *any; | |
1053 | ||
e72dc28c | 1054 | if (!PL_dirty) |
84bafc02 | 1055 | return newSVpvs_flags("", SVs_TEMP); |
e72dc28c | 1056 | |
0372dbb6 GS |
1057 | if (PL_mess_sv) |
1058 | return PL_mess_sv; | |
1059 | ||
fc36a67e | 1060 | /* Create as PVMG now, to avoid any upgrading later */ |
a02a5408 JC |
1061 | Newx(sv, 1, SV); |
1062 | Newxz(any, 1, XPVMG); | |
fc36a67e | 1063 | SvFLAGS(sv) = SVt_PVMG; |
1064 | SvANY(sv) = (void*)any; | |
6136c704 | 1065 | SvPV_set(sv, NULL); |
fc36a67e | 1066 | SvREFCNT(sv) = 1 << 30; /* practically infinite */ |
e72dc28c | 1067 | PL_mess_sv = sv; |
fc36a67e | 1068 | return sv; |
1069 | } | |
1070 | ||
c5be433b | 1071 | #if defined(PERL_IMPLICIT_CONTEXT) |
cea2e8a9 GS |
1072 | char * |
1073 | Perl_form_nocontext(const char* pat, ...) | |
1074 | { | |
1075 | dTHX; | |
c5be433b | 1076 | char *retval; |
cea2e8a9 | 1077 | va_list args; |
7918f24d | 1078 | PERL_ARGS_ASSERT_FORM_NOCONTEXT; |
cea2e8a9 | 1079 | va_start(args, pat); |
c5be433b | 1080 | retval = vform(pat, &args); |
cea2e8a9 | 1081 | va_end(args); |
c5be433b | 1082 | return retval; |
cea2e8a9 | 1083 | } |
c5be433b | 1084 | #endif /* PERL_IMPLICIT_CONTEXT */ |
cea2e8a9 | 1085 | |
7c9e965c | 1086 | /* |
ccfc67b7 | 1087 | =head1 Miscellaneous Functions |
7c9e965c JP |
1088 | =for apidoc form |
1089 | ||
1090 | Takes a sprintf-style format pattern and conventional | |
1091 | (non-SV) arguments and returns the formatted string. | |
1092 | ||
1093 | (char *) Perl_form(pTHX_ const char* pat, ...) | |
1094 | ||
1095 | can be used any place a string (char *) is required: | |
1096 | ||
1097 | char * s = Perl_form("%d.%d",major,minor); | |
1098 | ||
1099 | Uses a single private buffer so if you want to format several strings you | |
1100 | must explicitly copy the earlier strings away (and free the copies when you | |
1101 | are done). | |
1102 | ||
1103 | =cut | |
1104 | */ | |
1105 | ||
8990e307 | 1106 | char * |
864dbfa3 | 1107 | Perl_form(pTHX_ const char* pat, ...) |
8990e307 | 1108 | { |
c5be433b | 1109 | char *retval; |
46fc3d4c | 1110 | va_list args; |
7918f24d | 1111 | PERL_ARGS_ASSERT_FORM; |
46fc3d4c | 1112 | va_start(args, pat); |
c5be433b | 1113 | retval = vform(pat, &args); |
46fc3d4c | 1114 | va_end(args); |
c5be433b GS |
1115 | return retval; |
1116 | } | |
1117 | ||
1118 | char * | |
1119 | Perl_vform(pTHX_ const char *pat, va_list *args) | |
1120 | { | |
2d03de9c | 1121 | SV * const sv = mess_alloc(); |
7918f24d | 1122 | PERL_ARGS_ASSERT_VFORM; |
4608196e | 1123 | sv_vsetpvfn(sv, pat, strlen(pat), args, NULL, 0, NULL); |
e72dc28c | 1124 | return SvPVX(sv); |
46fc3d4c | 1125 | } |
a687059c | 1126 | |
5a844595 GS |
1127 | #if defined(PERL_IMPLICIT_CONTEXT) |
1128 | SV * | |
1129 | Perl_mess_nocontext(const char *pat, ...) | |
1130 | { | |
1131 | dTHX; | |
1132 | SV *retval; | |
1133 | va_list args; | |
7918f24d | 1134 | PERL_ARGS_ASSERT_MESS_NOCONTEXT; |
5a844595 GS |
1135 | va_start(args, pat); |
1136 | retval = vmess(pat, &args); | |
1137 | va_end(args); | |
1138 | return retval; | |
1139 | } | |
1140 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
1141 | ||
06bf62c7 | 1142 | SV * |
5a844595 GS |
1143 | Perl_mess(pTHX_ const char *pat, ...) |
1144 | { | |
1145 | SV *retval; | |
1146 | va_list args; | |
7918f24d | 1147 | PERL_ARGS_ASSERT_MESS; |
5a844595 GS |
1148 | va_start(args, pat); |
1149 | retval = vmess(pat, &args); | |
1150 | va_end(args); | |
1151 | return retval; | |
1152 | } | |
1153 | ||
5f66b61c AL |
1154 | STATIC const COP* |
1155 | S_closest_cop(pTHX_ const COP *cop, const OP *o) | |
ae7d165c | 1156 | { |
97aff369 | 1157 | dVAR; |
ae7d165c PJ |
1158 | /* Look for PL_op starting from o. cop is the last COP we've seen. */ |
1159 | ||
7918f24d NC |
1160 | PERL_ARGS_ASSERT_CLOSEST_COP; |
1161 | ||
fabdb6c0 AL |
1162 | if (!o || o == PL_op) |
1163 | return cop; | |
ae7d165c PJ |
1164 | |
1165 | if (o->op_flags & OPf_KIDS) { | |
5f66b61c | 1166 | const OP *kid; |
fabdb6c0 | 1167 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { |
5f66b61c | 1168 | const COP *new_cop; |
ae7d165c PJ |
1169 | |
1170 | /* If the OP_NEXTSTATE has been optimised away we can still use it | |
1171 | * the get the file and line number. */ | |
1172 | ||
1173 | if (kid->op_type == OP_NULL && kid->op_targ == OP_NEXTSTATE) | |
5f66b61c | 1174 | cop = (const COP *)kid; |
ae7d165c PJ |
1175 | |
1176 | /* Keep searching, and return when we've found something. */ | |
1177 | ||
1178 | new_cop = closest_cop(cop, kid); | |
fabdb6c0 AL |
1179 | if (new_cop) |
1180 | return new_cop; | |
ae7d165c PJ |
1181 | } |
1182 | } | |
1183 | ||
1184 | /* Nothing found. */ | |
1185 | ||
5f66b61c | 1186 | return NULL; |
ae7d165c PJ |
1187 | } |
1188 | ||
5a844595 GS |
1189 | SV * |
1190 | Perl_vmess(pTHX_ const char *pat, va_list *args) | |
46fc3d4c | 1191 | { |
97aff369 | 1192 | dVAR; |
c4420975 | 1193 | SV * const sv = mess_alloc(); |
46fc3d4c | 1194 | |
7918f24d NC |
1195 | PERL_ARGS_ASSERT_VMESS; |
1196 | ||
5f66b61c | 1197 | sv_vsetpvfn(sv, pat, strlen(pat), args, NULL, 0, NULL); |
46fc3d4c | 1198 | if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') { |
ae7d165c PJ |
1199 | /* |
1200 | * Try and find the file and line for PL_op. This will usually be | |
1201 | * PL_curcop, but it might be a cop that has been optimised away. We | |
1202 | * can try to find such a cop by searching through the optree starting | |
1203 | * from the sibling of PL_curcop. | |
1204 | */ | |
1205 | ||
e1ec3a88 | 1206 | const COP *cop = closest_cop(PL_curcop, PL_curcop->op_sibling); |
5f66b61c AL |
1207 | if (!cop) |
1208 | cop = PL_curcop; | |
ae7d165c PJ |
1209 | |
1210 | if (CopLINE(cop)) | |
ed094faf | 1211 | Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf, |
3aed30dc | 1212 | OutCopFILE(cop), (IV)CopLINE(cop)); |
191f87d5 DH |
1213 | /* Seems that GvIO() can be untrustworthy during global destruction. */ |
1214 | if (GvIO(PL_last_in_gv) && (SvTYPE(GvIOp(PL_last_in_gv)) == SVt_PVIO) | |
1215 | && IoLINES(GvIOp(PL_last_in_gv))) | |
1216 | { | |
e1ec3a88 | 1217 | const bool line_mode = (RsSIMPLE(PL_rs) && |
95a20fc0 | 1218 | SvCUR(PL_rs) == 1 && *SvPVX_const(PL_rs) == '\n'); |
57def98f | 1219 | Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf, |
5f66b61c | 1220 | PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv), |
edc2eac3 JH |
1221 | line_mode ? "line" : "chunk", |
1222 | (IV)IoLINES(GvIOp(PL_last_in_gv))); | |
a687059c | 1223 | } |
5f66b61c AL |
1224 | if (PL_dirty) |
1225 | sv_catpvs(sv, " during global destruction"); | |
1226 | sv_catpvs(sv, ".\n"); | |
a687059c | 1227 | } |
06bf62c7 | 1228 | return sv; |
a687059c LW |
1229 | } |
1230 | ||
7ff03255 SG |
1231 | void |
1232 | Perl_write_to_stderr(pTHX_ const char* message, int msglen) | |
1233 | { | |
27da23d5 | 1234 | dVAR; |
7ff03255 SG |
1235 | IO *io; |
1236 | MAGIC *mg; | |
1237 | ||
7918f24d NC |
1238 | PERL_ARGS_ASSERT_WRITE_TO_STDERR; |
1239 | ||
7ff03255 SG |
1240 | if (PL_stderrgv && SvREFCNT(PL_stderrgv) |
1241 | && (io = GvIO(PL_stderrgv)) | |
daba3364 | 1242 | && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) |
7ff03255 SG |
1243 | { |
1244 | dSP; | |
1245 | ENTER; | |
1246 | SAVETMPS; | |
1247 | ||
1248 | save_re_context(); | |
1249 | SAVESPTR(PL_stderrgv); | |
a0714e2c | 1250 | PL_stderrgv = NULL; |
7ff03255 SG |
1251 | |
1252 | PUSHSTACKi(PERLSI_MAGIC); | |
1253 | ||
1254 | PUSHMARK(SP); | |
1255 | EXTEND(SP,2); | |
daba3364 | 1256 | PUSHs(SvTIED_obj(MUTABLE_SV(io), mg)); |
6e449a3a | 1257 | mPUSHp(message, msglen); |
7ff03255 SG |
1258 | PUTBACK; |
1259 | call_method("PRINT", G_SCALAR); | |
1260 | ||
1261 | POPSTACK; | |
1262 | FREETMPS; | |
1263 | LEAVE; | |
1264 | } | |
1265 | else { | |
1266 | #ifdef USE_SFIO | |
1267 | /* SFIO can really mess with your errno */ | |
4ee39169 | 1268 | dSAVED_ERRNO; |
7ff03255 | 1269 | #endif |
53c1dcc0 | 1270 | PerlIO * const serr = Perl_error_log; |
7ff03255 SG |
1271 | |
1272 | PERL_WRITE_MSG_TO_CONSOLE(serr, message, msglen); | |
1273 | (void)PerlIO_flush(serr); | |
1274 | #ifdef USE_SFIO | |
4ee39169 | 1275 | RESTORE_ERRNO; |
7ff03255 SG |
1276 | #endif |
1277 | } | |
1278 | } | |
1279 | ||
46d9c920 | 1280 | /* Common code used by vcroak, vdie, vwarn and vwarner */ |
3ab1ac99 | 1281 | |
46d9c920 NC |
1282 | STATIC bool |
1283 | S_vdie_common(pTHX_ const char *message, STRLEN msglen, I32 utf8, bool warn) | |
63315e18 | 1284 | { |
97aff369 | 1285 | dVAR; |
63315e18 NC |
1286 | HV *stash; |
1287 | GV *gv; | |
1288 | CV *cv; | |
46d9c920 NC |
1289 | SV **const hook = warn ? &PL_warnhook : &PL_diehook; |
1290 | /* sv_2cv might call Perl_croak() or Perl_warner() */ | |
1291 | SV * const oldhook = *hook; | |
1292 | ||
1293 | assert(oldhook); | |
63315e18 | 1294 | |
63315e18 | 1295 | ENTER; |
46d9c920 NC |
1296 | SAVESPTR(*hook); |
1297 | *hook = NULL; | |
1298 | cv = sv_2cv(oldhook, &stash, &gv, 0); | |
63315e18 NC |
1299 | LEAVE; |
1300 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { | |
1301 | dSP; | |
1302 | SV *msg; | |
1303 | ||
1304 | ENTER; | |
1305 | save_re_context(); | |
46d9c920 NC |
1306 | if (warn) { |
1307 | SAVESPTR(*hook); | |
1308 | *hook = NULL; | |
1309 | } | |
1310 | if (warn || message) { | |
740cce10 | 1311 | msg = newSVpvn_flags(message, msglen, utf8); |
63315e18 NC |
1312 | SvREADONLY_on(msg); |
1313 | SAVEFREESV(msg); | |
1314 | } | |
1315 | else { | |
1316 | msg = ERRSV; | |
1317 | } | |
1318 | ||
46d9c920 | 1319 | PUSHSTACKi(warn ? PERLSI_WARNHOOK : PERLSI_DIEHOOK); |
63315e18 NC |
1320 | PUSHMARK(SP); |
1321 | XPUSHs(msg); | |
1322 | PUTBACK; | |
daba3364 | 1323 | call_sv(MUTABLE_SV(cv), G_DISCARD); |
63315e18 NC |
1324 | POPSTACK; |
1325 | LEAVE; | |
46d9c920 | 1326 | return TRUE; |
63315e18 | 1327 | } |
46d9c920 | 1328 | return FALSE; |
63315e18 NC |
1329 | } |
1330 | ||
cfd0369c | 1331 | STATIC const char * |
e07360fa AT |
1332 | S_vdie_croak_common(pTHX_ const char* pat, va_list* args, STRLEN* msglen, |
1333 | I32* utf8) | |
1334 | { | |
1335 | dVAR; | |
cfd0369c | 1336 | const char *message; |
e07360fa AT |
1337 | |
1338 | if (pat) { | |
890ce7af | 1339 | SV * const msv = vmess(pat, args); |
e07360fa AT |
1340 | if (PL_errors && SvCUR(PL_errors)) { |
1341 | sv_catsv(PL_errors, msv); | |
cfd0369c | 1342 | message = SvPV_const(PL_errors, *msglen); |
e07360fa AT |
1343 | SvCUR_set(PL_errors, 0); |
1344 | } | |
1345 | else | |
cfd0369c | 1346 | message = SvPV_const(msv,*msglen); |
e07360fa AT |
1347 | *utf8 = SvUTF8(msv); |
1348 | } | |
1349 | else { | |
bd61b366 | 1350 | message = NULL; |
e07360fa AT |
1351 | } |
1352 | ||
e07360fa | 1353 | if (PL_diehook) { |
46d9c920 | 1354 | S_vdie_common(aTHX_ message, *msglen, *utf8, FALSE); |
e07360fa AT |
1355 | } |
1356 | return message; | |
1357 | } | |
1358 | ||
1f676739 | 1359 | static OP * |
e3cf49e2 | 1360 | S_vdie(pTHX_ const char* pat, va_list *args) |
36477c24 | 1361 | { |
97aff369 | 1362 | dVAR; |
73d840c0 | 1363 | const char *message; |
e1ec3a88 | 1364 | const int was_in_eval = PL_in_eval; |
06bf62c7 | 1365 | STRLEN msglen; |
ff882698 | 1366 | I32 utf8 = 0; |
36477c24 | 1367 | |
890ce7af | 1368 | message = vdie_croak_common(pat, args, &msglen, &utf8); |
36477c24 | 1369 | |
06bf62c7 | 1370 | PL_restartop = die_where(message, msglen); |
ff882698 | 1371 | SvFLAGS(ERRSV) |= utf8; |
3280af22 | 1372 | if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev) |
6224f72b | 1373 | JMPENV_JUMP(3); |
3280af22 | 1374 | return PL_restartop; |
36477c24 | 1375 | } |
1376 | ||
c5be433b | 1377 | #if defined(PERL_IMPLICIT_CONTEXT) |
cea2e8a9 GS |
1378 | OP * |
1379 | Perl_die_nocontext(const char* pat, ...) | |
a687059c | 1380 | { |
cea2e8a9 GS |
1381 | dTHX; |
1382 | OP *o; | |
a687059c | 1383 | va_list args; |
cea2e8a9 | 1384 | va_start(args, pat); |
c5be433b | 1385 | o = vdie(pat, &args); |
cea2e8a9 GS |
1386 | va_end(args); |
1387 | return o; | |
1388 | } | |
c5be433b | 1389 | #endif /* PERL_IMPLICIT_CONTEXT */ |
cea2e8a9 GS |
1390 | |
1391 | OP * | |
1392 | Perl_die(pTHX_ const char* pat, ...) | |
1393 | { | |
1394 | OP *o; | |
1395 | va_list args; | |
1396 | va_start(args, pat); | |
c5be433b | 1397 | o = vdie(pat, &args); |
cea2e8a9 GS |
1398 | va_end(args); |
1399 | return o; | |
1400 | } | |
1401 | ||
c5be433b GS |
1402 | void |
1403 | Perl_vcroak(pTHX_ const char* pat, va_list *args) | |
cea2e8a9 | 1404 | { |
97aff369 | 1405 | dVAR; |
73d840c0 | 1406 | const char *message; |
06bf62c7 | 1407 | STRLEN msglen; |
ff882698 | 1408 | I32 utf8 = 0; |
a687059c | 1409 | |
3ab1ac99 | 1410 | message = S_vdie_croak_common(aTHX_ pat, args, &msglen, &utf8); |
5a844595 | 1411 | |
3280af22 | 1412 | if (PL_in_eval) { |
06bf62c7 | 1413 | PL_restartop = die_where(message, msglen); |
ff882698 | 1414 | SvFLAGS(ERRSV) |= utf8; |
6224f72b | 1415 | JMPENV_JUMP(3); |
a0d0e21e | 1416 | } |
84414e3e | 1417 | else if (!message) |
cfd0369c | 1418 | message = SvPVx_const(ERRSV, msglen); |
84414e3e | 1419 | |
7ff03255 | 1420 | write_to_stderr(message, msglen); |
f86702cc | 1421 | my_failure_exit(); |
a687059c LW |
1422 | } |
1423 | ||
c5be433b | 1424 | #if defined(PERL_IMPLICIT_CONTEXT) |
8990e307 | 1425 | void |
cea2e8a9 | 1426 | Perl_croak_nocontext(const char *pat, ...) |
a687059c | 1427 | { |
cea2e8a9 | 1428 | dTHX; |
a687059c | 1429 | va_list args; |
cea2e8a9 | 1430 | va_start(args, pat); |
c5be433b | 1431 | vcroak(pat, &args); |
cea2e8a9 GS |
1432 | /* NOTREACHED */ |
1433 | va_end(args); | |
1434 | } | |
1435 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
1436 | ||
954c1994 | 1437 | /* |
ccfc67b7 JH |
1438 | =head1 Warning and Dieing |
1439 | ||
954c1994 GS |
1440 | =for apidoc croak |
1441 | ||
9983fa3c | 1442 | This is the XSUB-writer's interface to Perl's C<die> function. |
966353fd MF |
1443 | Normally call this function the same way you call the C C<printf> |
1444 | function. Calling C<croak> returns control directly to Perl, | |
1445 | sidestepping the normal C order of execution. See C<warn>. | |
9983fa3c GS |
1446 | |
1447 | If you want to throw an exception object, assign the object to | |
bd61b366 | 1448 | C<$@> and then pass C<NULL> to croak(): |
9983fa3c | 1449 | |
64ace3f8 | 1450 | errsv = get_sv("@", GV_ADD); |
9983fa3c | 1451 | sv_setsv(errsv, exception_object); |
bd61b366 | 1452 | croak(NULL); |
954c1994 GS |
1453 | |
1454 | =cut | |
1455 | */ | |
1456 | ||
cea2e8a9 GS |
1457 | void |
1458 | Perl_croak(pTHX_ const char *pat, ...) | |
1459 | { | |
1460 | va_list args; | |
1461 | va_start(args, pat); | |
c5be433b | 1462 | vcroak(pat, &args); |
cea2e8a9 GS |
1463 | /* NOTREACHED */ |
1464 | va_end(args); | |
1465 | } | |
1466 | ||
c5be433b GS |
1467 | void |
1468 | Perl_vwarn(pTHX_ const char* pat, va_list *args) | |
cea2e8a9 | 1469 | { |
27da23d5 | 1470 | dVAR; |
06bf62c7 | 1471 | STRLEN msglen; |
53c1dcc0 AL |
1472 | SV * const msv = vmess(pat, args); |
1473 | const I32 utf8 = SvUTF8(msv); | |
1474 | const char * const message = SvPV_const(msv, msglen); | |
a687059c | 1475 | |
7918f24d NC |
1476 | PERL_ARGS_ASSERT_VWARN; |
1477 | ||
3280af22 | 1478 | if (PL_warnhook) { |
46d9c920 | 1479 | if (vdie_common(message, msglen, utf8, TRUE)) |
20cec16a | 1480 | return; |
748a9306 | 1481 | } |
87582a92 | 1482 | |
7ff03255 | 1483 | write_to_stderr(message, msglen); |
a687059c | 1484 | } |
8d063cd8 | 1485 | |
c5be433b | 1486 | #if defined(PERL_IMPLICIT_CONTEXT) |
cea2e8a9 GS |
1487 | void |
1488 | Perl_warn_nocontext(const char *pat, ...) | |
1489 | { | |
1490 | dTHX; | |
1491 | va_list args; | |
7918f24d | 1492 | PERL_ARGS_ASSERT_WARN_NOCONTEXT; |
cea2e8a9 | 1493 | va_start(args, pat); |
c5be433b | 1494 | vwarn(pat, &args); |
cea2e8a9 GS |
1495 | va_end(args); |
1496 | } | |
1497 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
1498 | ||
954c1994 GS |
1499 | /* |
1500 | =for apidoc warn | |
1501 | ||
966353fd MF |
1502 | This is the XSUB-writer's interface to Perl's C<warn> function. Call this |
1503 | function the same way you call the C C<printf> function. See C<croak>. | |
954c1994 GS |
1504 | |
1505 | =cut | |
1506 | */ | |
1507 | ||
cea2e8a9 GS |
1508 | void |
1509 | Perl_warn(pTHX_ const char *pat, ...) | |
1510 | { | |
1511 | va_list args; | |
7918f24d | 1512 | PERL_ARGS_ASSERT_WARN; |
cea2e8a9 | 1513 | va_start(args, pat); |
c5be433b | 1514 | vwarn(pat, &args); |
cea2e8a9 GS |
1515 | va_end(args); |
1516 | } | |
1517 | ||
c5be433b GS |
1518 | #if defined(PERL_IMPLICIT_CONTEXT) |
1519 | void | |
1520 | Perl_warner_nocontext(U32 err, const char *pat, ...) | |
1521 | { | |
27da23d5 | 1522 | dTHX; |
c5be433b | 1523 | va_list args; |
7918f24d | 1524 | PERL_ARGS_ASSERT_WARNER_NOCONTEXT; |
c5be433b GS |
1525 | va_start(args, pat); |
1526 | vwarner(err, pat, &args); | |
1527 | va_end(args); | |
1528 | } | |
1529 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
1530 | ||
599cee73 | 1531 | void |
864dbfa3 | 1532 | Perl_warner(pTHX_ U32 err, const char* pat,...) |
599cee73 PM |
1533 | { |
1534 | va_list args; | |
7918f24d | 1535 | PERL_ARGS_ASSERT_WARNER; |
c5be433b GS |
1536 | va_start(args, pat); |
1537 | vwarner(err, pat, &args); | |
1538 | va_end(args); | |
1539 | } | |
1540 | ||
1541 | void | |
1542 | Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args) | |
1543 | { | |
27da23d5 | 1544 | dVAR; |
7918f24d | 1545 | PERL_ARGS_ASSERT_VWARNER; |
5f2d9966 | 1546 | if (PL_warnhook == PERL_WARNHOOK_FATAL || ckDEAD(err)) { |
a3b680e6 | 1547 | SV * const msv = vmess(pat, args); |
d13b0d77 | 1548 | STRLEN msglen; |
7452cf6a | 1549 | const char * const message = SvPV_const(msv, msglen); |
a3b680e6 | 1550 | const I32 utf8 = SvUTF8(msv); |
599cee73 | 1551 | |
3aed30dc | 1552 | if (PL_diehook) { |
63315e18 | 1553 | assert(message); |
46d9c920 | 1554 | S_vdie_common(aTHX_ message, msglen, utf8, FALSE); |
3aed30dc HS |
1555 | } |
1556 | if (PL_in_eval) { | |
1557 | PL_restartop = die_where(message, msglen); | |
ff882698 | 1558 | SvFLAGS(ERRSV) |= utf8; |
3aed30dc HS |
1559 | JMPENV_JUMP(3); |
1560 | } | |
7ff03255 | 1561 | write_to_stderr(message, msglen); |
3aed30dc | 1562 | my_failure_exit(); |
599cee73 PM |
1563 | } |
1564 | else { | |
d13b0d77 | 1565 | Perl_vwarn(aTHX_ pat, args); |
599cee73 PM |
1566 | } |
1567 | } | |
1568 | ||
f54ba1c2 DM |
1569 | /* implements the ckWARN? macros */ |
1570 | ||
1571 | bool | |
1572 | Perl_ckwarn(pTHX_ U32 w) | |
1573 | { | |
97aff369 | 1574 | dVAR; |
f54ba1c2 DM |
1575 | return |
1576 | ( | |
1577 | isLEXWARN_on | |
1578 | && PL_curcop->cop_warnings != pWARN_NONE | |
1579 | && ( | |
1580 | PL_curcop->cop_warnings == pWARN_ALL | |
1581 | || isWARN_on(PL_curcop->cop_warnings, unpackWARN1(w)) | |
1582 | || (unpackWARN2(w) && | |
1583 | isWARN_on(PL_curcop->cop_warnings, unpackWARN2(w))) | |
1584 | || (unpackWARN3(w) && | |
1585 | isWARN_on(PL_curcop->cop_warnings, unpackWARN3(w))) | |
1586 | || (unpackWARN4(w) && | |
1587 | isWARN_on(PL_curcop->cop_warnings, unpackWARN4(w))) | |
1588 | ) | |
1589 | ) | |
1590 | || | |
1591 | ( | |
1592 | isLEXWARN_off && PL_dowarn & G_WARN_ON | |
1593 | ) | |
1594 | ; | |
1595 | } | |
1596 | ||
1597 | /* implements the ckWARN?_d macro */ | |
1598 | ||
1599 | bool | |
1600 | Perl_ckwarn_d(pTHX_ U32 w) | |
1601 | { | |
97aff369 | 1602 | dVAR; |
f54ba1c2 DM |
1603 | return |
1604 | isLEXWARN_off | |
1605 | || PL_curcop->cop_warnings == pWARN_ALL | |
1606 | || ( | |
1607 | PL_curcop->cop_warnings != pWARN_NONE | |
1608 | && ( | |
1609 | isWARN_on(PL_curcop->cop_warnings, unpackWARN1(w)) | |
1610 | || (unpackWARN2(w) && | |
1611 | isWARN_on(PL_curcop->cop_warnings, unpackWARN2(w))) | |
1612 | || (unpackWARN3(w) && | |
1613 | isWARN_on(PL_curcop->cop_warnings, unpackWARN3(w))) | |
1614 | || (unpackWARN4(w) && | |
1615 | isWARN_on(PL_curcop->cop_warnings, unpackWARN4(w))) | |
1616 | ) | |
1617 | ) | |
1618 | ; | |
1619 | } | |
1620 | ||
72dc9ed5 NC |
1621 | /* Set buffer=NULL to get a new one. */ |
1622 | STRLEN * | |
8ee4cf24 | 1623 | Perl_new_warnings_bitfield(pTHX_ STRLEN *buffer, const char *const bits, |
72dc9ed5 NC |
1624 | STRLEN size) { |
1625 | const MEM_SIZE len_wanted = sizeof(STRLEN) + size; | |
35da51f7 | 1626 | PERL_UNUSED_CONTEXT; |
7918f24d | 1627 | PERL_ARGS_ASSERT_NEW_WARNINGS_BITFIELD; |
72dc9ed5 | 1628 | |
10edeb5d JH |
1629 | buffer = (STRLEN*) |
1630 | (specialWARN(buffer) ? | |
1631 | PerlMemShared_malloc(len_wanted) : | |
1632 | PerlMemShared_realloc(buffer, len_wanted)); | |
72dc9ed5 NC |
1633 | buffer[0] = size; |
1634 | Copy(bits, (buffer + 1), size, char); | |
1635 | return buffer; | |
1636 | } | |
f54ba1c2 | 1637 | |
e6587932 DM |
1638 | /* since we've already done strlen() for both nam and val |
1639 | * we can use that info to make things faster than | |
1640 | * sprintf(s, "%s=%s", nam, val) | |
1641 | */ | |
1642 | #define my_setenv_format(s, nam, nlen, val, vlen) \ | |
1643 | Copy(nam, s, nlen, char); \ | |
1644 | *(s+nlen) = '='; \ | |
1645 | Copy(val, s+(nlen+1), vlen, char); \ | |
1646 | *(s+(nlen+1+vlen)) = '\0' | |
1647 | ||
c5d12488 JH |
1648 | #ifdef USE_ENVIRON_ARRAY |
1649 | /* VMS' my_setenv() is in vms.c */ | |
1650 | #if !defined(WIN32) && !defined(NETWARE) | |
8d063cd8 | 1651 | void |
e1ec3a88 | 1652 | Perl_my_setenv(pTHX_ const char *nam, const char *val) |
8d063cd8 | 1653 | { |
27da23d5 | 1654 | dVAR; |
4efc5df6 GS |
1655 | #ifdef USE_ITHREADS |
1656 | /* only parent thread can modify process environment */ | |
1657 | if (PL_curinterp == aTHX) | |
1658 | #endif | |
1659 | { | |
f2517201 | 1660 | #ifndef PERL_USE_SAFE_PUTENV |
50acdf95 | 1661 | if (!PL_use_safe_putenv) { |
c5d12488 | 1662 | /* most putenv()s leak, so we manipulate environ directly */ |
3a9222be JH |
1663 | register I32 i; |
1664 | register const I32 len = strlen(nam); | |
c5d12488 JH |
1665 | int nlen, vlen; |
1666 | ||
3a9222be JH |
1667 | /* where does it go? */ |
1668 | for (i = 0; environ[i]; i++) { | |
1669 | if (strnEQ(environ[i],nam,len) && environ[i][len] == '=') | |
1670 | break; | |
1671 | } | |
1672 | ||
c5d12488 JH |
1673 | if (environ == PL_origenviron) { /* need we copy environment? */ |
1674 | I32 j; | |
1675 | I32 max; | |
1676 | char **tmpenv; | |
1677 | ||
1678 | max = i; | |
1679 | while (environ[max]) | |
1680 | max++; | |
1681 | tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*)); | |
1682 | for (j=0; j<max; j++) { /* copy environment */ | |
1683 | const int len = strlen(environ[j]); | |
1684 | tmpenv[j] = (char*)safesysmalloc((len+1)*sizeof(char)); | |
1685 | Copy(environ[j], tmpenv[j], len+1, char); | |
1686 | } | |
1687 | tmpenv[max] = NULL; | |
1688 | environ = tmpenv; /* tell exec where it is now */ | |
1689 | } | |
1690 | if (!val) { | |
1691 | safesysfree(environ[i]); | |
1692 | while (environ[i]) { | |
1693 | environ[i] = environ[i+1]; | |
1694 | i++; | |
a687059c | 1695 | } |
c5d12488 JH |
1696 | return; |
1697 | } | |
1698 | if (!environ[i]) { /* does not exist yet */ | |
1699 | environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*)); | |
1700 | environ[i+1] = NULL; /* make sure it's null terminated */ | |
1701 | } | |
1702 | else | |
1703 | safesysfree(environ[i]); | |
1704 | nlen = strlen(nam); | |
1705 | vlen = strlen(val); | |
1706 | ||
1707 | environ[i] = (char*)safesysmalloc((nlen+vlen+2) * sizeof(char)); | |
1708 | /* all that work just for this */ | |
1709 | my_setenv_format(environ[i], nam, nlen, val, vlen); | |
50acdf95 | 1710 | } else { |
c5d12488 | 1711 | # endif |
7ee146b1 | 1712 | # if defined(__CYGWIN__) || defined(EPOC) || defined(__SYMBIAN32__) || defined(__riscos__) |
88f5bc07 AB |
1713 | # if defined(HAS_UNSETENV) |
1714 | if (val == NULL) { | |
1715 | (void)unsetenv(nam); | |
1716 | } else { | |
1717 | (void)setenv(nam, val, 1); | |
1718 | } | |
1719 | # else /* ! HAS_UNSETENV */ | |
1720 | (void)setenv(nam, val, 1); | |
1721 | # endif /* HAS_UNSETENV */ | |
47dafe4d | 1722 | # else |
88f5bc07 AB |
1723 | # if defined(HAS_UNSETENV) |
1724 | if (val == NULL) { | |
1725 | (void)unsetenv(nam); | |
1726 | } else { | |
c4420975 AL |
1727 | const int nlen = strlen(nam); |
1728 | const int vlen = strlen(val); | |
1729 | char * const new_env = | |
88f5bc07 AB |
1730 | (char*)safesysmalloc((nlen + vlen + 2) * sizeof(char)); |
1731 | my_setenv_format(new_env, nam, nlen, val, vlen); | |
1732 | (void)putenv(new_env); | |
1733 | } | |
1734 | # else /* ! HAS_UNSETENV */ | |
1735 | char *new_env; | |
c4420975 AL |
1736 | const int nlen = strlen(nam); |
1737 | int vlen; | |
88f5bc07 AB |
1738 | if (!val) { |
1739 | val = ""; | |
1740 | } | |
1741 | vlen = strlen(val); | |
1742 | new_env = (char*)safesysmalloc((nlen + vlen + 2) * sizeof(char)); | |
1743 | /* all that work just for this */ | |
1744 | my_setenv_format(new_env, nam, nlen, val, vlen); | |
1745 | (void)putenv(new_env); | |
1746 | # endif /* HAS_UNSETENV */ | |
47dafe4d | 1747 | # endif /* __CYGWIN__ */ |
50acdf95 MS |
1748 | #ifndef PERL_USE_SAFE_PUTENV |
1749 | } | |
1750 | #endif | |
4efc5df6 | 1751 | } |
8d063cd8 LW |
1752 | } |
1753 | ||
c5d12488 | 1754 | #else /* WIN32 || NETWARE */ |
68dc0745 | 1755 | |
1756 | void | |
72229eff | 1757 | Perl_my_setenv(pTHX_ const char *nam, const char *val) |
68dc0745 | 1758 | { |
27da23d5 | 1759 | dVAR; |
c5d12488 JH |
1760 | register char *envstr; |
1761 | const int nlen = strlen(nam); | |
1762 | int vlen; | |
e6587932 | 1763 | |
c5d12488 JH |
1764 | if (!val) { |
1765 | val = ""; | |
ac5c734f | 1766 | } |
c5d12488 JH |
1767 | vlen = strlen(val); |
1768 | Newx(envstr, nlen+vlen+2, char); | |
1769 | my_setenv_format(envstr, nam, nlen, val, vlen); | |
1770 | (void)PerlEnv_putenv(envstr); | |
1771 | Safefree(envstr); | |
3e3baf6d TB |
1772 | } |
1773 | ||
c5d12488 | 1774 | #endif /* WIN32 || NETWARE */ |
3e3baf6d | 1775 | |
c5d12488 | 1776 | #endif /* !VMS && !EPOC*/ |
378cc40b | 1777 | |
16d20bd9 | 1778 | #ifdef UNLINK_ALL_VERSIONS |
79072805 | 1779 | I32 |
6e732051 | 1780 | Perl_unlnk(pTHX_ const char *f) /* unlink all versions of a file */ |
378cc40b | 1781 | { |
35da51f7 | 1782 | I32 retries = 0; |
378cc40b | 1783 | |
7918f24d NC |
1784 | PERL_ARGS_ASSERT_UNLNK; |
1785 | ||
35da51f7 AL |
1786 | while (PerlLIO_unlink(f) >= 0) |
1787 | retries++; | |
1788 | return retries ? 0 : -1; | |
378cc40b LW |
1789 | } |
1790 | #endif | |
1791 | ||
7a3f2258 | 1792 | /* this is a drop-in replacement for bcopy() */ |
2253333f | 1793 | #if (!defined(HAS_MEMCPY) && !defined(HAS_BCOPY)) || (!defined(HAS_MEMMOVE) && !defined(HAS_SAFE_MEMCPY) && !defined(HAS_SAFE_BCOPY)) |
378cc40b | 1794 | char * |
7a3f2258 | 1795 | Perl_my_bcopy(register const char *from,register char *to,register I32 len) |
378cc40b | 1796 | { |
2d03de9c | 1797 | char * const retval = to; |
378cc40b | 1798 | |
7918f24d NC |
1799 | PERL_ARGS_ASSERT_MY_BCOPY; |
1800 | ||
7c0587c8 LW |
1801 | if (from - to >= 0) { |
1802 | while (len--) | |
1803 | *to++ = *from++; | |
1804 | } | |
1805 | else { | |
1806 | to += len; | |
1807 | from += len; | |
1808 | while (len--) | |
faf8582f | 1809 | *(--to) = *(--from); |
7c0587c8 | 1810 | } |
378cc40b LW |
1811 | return retval; |
1812 | } | |
ffed7fef | 1813 | #endif |
378cc40b | 1814 | |
7a3f2258 | 1815 | /* this is a drop-in replacement for memset() */ |
fc36a67e | 1816 | #ifndef HAS_MEMSET |
1817 | void * | |
7a3f2258 | 1818 | Perl_my_memset(register char *loc, register I32 ch, register I32 len) |
fc36a67e | 1819 | { |
2d03de9c | 1820 | char * const retval = loc; |
fc36a67e | 1821 | |
7918f24d NC |
1822 | PERL_ARGS_ASSERT_MY_MEMSET; |
1823 | ||
fc36a67e | 1824 | while (len--) |
1825 | *loc++ = ch; | |
1826 | return retval; | |
1827 | } | |
1828 | #endif | |
1829 | ||
7a3f2258 | 1830 | /* this is a drop-in replacement for bzero() */ |
7c0587c8 | 1831 | #if !defined(HAS_BZERO) && !defined(HAS_MEMSET) |
378cc40b | 1832 | char * |
7a3f2258 | 1833 | Perl_my_bzero(register char *loc, register I32 len) |
378cc40b | 1834 | { |
2d03de9c | 1835 | char * const retval = loc; |
378cc40b | 1836 | |
7918f24d NC |
1837 | PERL_ARGS_ASSERT_MY_BZERO; |
1838 | ||
378cc40b LW |
1839 | while (len--) |
1840 | *loc++ = 0; | |
1841 | return retval; | |
1842 | } | |
1843 | #endif | |
7c0587c8 | 1844 | |
7a3f2258 | 1845 | /* this is a drop-in replacement for memcmp() */ |
36477c24 | 1846 | #if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP) |
79072805 | 1847 | I32 |
7a3f2258 | 1848 | Perl_my_memcmp(const char *s1, const char *s2, register I32 len) |
7c0587c8 | 1849 | { |
e1ec3a88 AL |
1850 | register const U8 *a = (const U8 *)s1; |
1851 | register const U8 *b = (const U8 *)s2; | |
79072805 | 1852 | register I32 tmp; |
7c0587c8 | 1853 | |
7918f24d NC |
1854 | PERL_ARGS_ASSERT_MY_MEMCMP; |
1855 | ||
7c0587c8 | 1856 | while (len--) { |
27da23d5 | 1857 | if ((tmp = *a++ - *b++)) |
7c0587c8 LW |
1858 | return tmp; |
1859 | } | |
1860 | return 0; | |
1861 | } | |
36477c24 | 1862 | #endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */ |
a687059c | 1863 | |
fe14fcc3 | 1864 | #ifndef HAS_VPRINTF |
d05d9be5 AD |
1865 | /* This vsprintf replacement should generally never get used, since |
1866 | vsprintf was available in both System V and BSD 2.11. (There may | |
1867 | be some cross-compilation or embedded set-ups where it is needed, | |
1868 | however.) | |
1869 | ||
1870 | If you encounter a problem in this function, it's probably a symptom | |
1871 | that Configure failed to detect your system's vprintf() function. | |
1872 | See the section on "item vsprintf" in the INSTALL file. | |
1873 | ||
1874 | This version may compile on systems with BSD-ish <stdio.h>, | |
1875 | but probably won't on others. | |
1876 | */ | |
a687059c | 1877 | |
85e6fe83 | 1878 | #ifdef USE_CHAR_VSPRINTF |
a687059c LW |
1879 | char * |
1880 | #else | |
1881 | int | |
1882 | #endif | |
d05d9be5 | 1883 | vsprintf(char *dest, const char *pat, void *args) |
a687059c LW |
1884 | { |
1885 | FILE fakebuf; | |
1886 | ||
d05d9be5 AD |
1887 | #if defined(STDIO_PTR_LVALUE) && defined(STDIO_CNT_LVALUE) |
1888 | FILE_ptr(&fakebuf) = (STDCHAR *) dest; | |
1889 | FILE_cnt(&fakebuf) = 32767; | |
1890 | #else | |
1891 | /* These probably won't compile -- If you really need | |
1892 | this, you'll have to figure out some other method. */ | |
a687059c LW |
1893 | fakebuf._ptr = dest; |
1894 | fakebuf._cnt = 32767; | |
d05d9be5 | 1895 | #endif |
35c8bce7 LW |
1896 | #ifndef _IOSTRG |
1897 | #define _IOSTRG 0 | |
1898 | #endif | |
a687059c LW |
1899 | fakebuf._flag = _IOWRT|_IOSTRG; |
1900 | _doprnt(pat, args, &fakebuf); /* what a kludge */ | |
d05d9be5 AD |
1901 | #if defined(STDIO_PTR_LVALUE) |
1902 | *(FILE_ptr(&fakebuf)++) = '\0'; | |
1903 | #else | |
1904 | /* PerlIO has probably #defined away fputc, but we want it here. */ | |
1905 | # ifdef fputc | |
1906 | # undef fputc /* XXX Should really restore it later */ | |
1907 | # endif | |
1908 | (void)fputc('\0', &fakebuf); | |
1909 | #endif | |
85e6fe83 | 1910 | #ifdef USE_CHAR_VSPRINTF |
a687059c LW |
1911 | return(dest); |
1912 | #else | |
1913 | return 0; /* perl doesn't use return value */ | |
1914 | #endif | |
1915 | } | |
1916 | ||
fe14fcc3 | 1917 | #endif /* HAS_VPRINTF */ |
a687059c LW |
1918 | |
1919 | #ifdef MYSWAP | |
ffed7fef | 1920 | #if BYTEORDER != 0x4321 |
a687059c | 1921 | short |
864dbfa3 | 1922 | Perl_my_swap(pTHX_ short s) |
a687059c LW |
1923 | { |
1924 | #if (BYTEORDER & 1) == 0 | |
1925 | short result; | |
1926 | ||
1927 | result = ((s & 255) << 8) + ((s >> 8) & 255); | |
1928 | return result; | |
1929 | #else | |
1930 | return s; | |
1931 | #endif | |
1932 | } | |
1933 | ||
1934 | long | |
864dbfa3 | 1935 | Perl_my_htonl(pTHX_ long l) |
a687059c LW |
1936 | { |
1937 | union { | |
1938 | long result; | |
ffed7fef | 1939 | char c[sizeof(long)]; |
a687059c LW |
1940 | } u; |
1941 | ||
cef6ea9d JH |
1942 | #if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678 |
1943 | #if BYTEORDER == 0x12345678 | |
1944 | u.result = 0; | |
1945 | #endif | |
a687059c LW |
1946 | u.c[0] = (l >> 24) & 255; |
1947 | u.c[1] = (l >> 16) & 255; | |
1948 | u.c[2] = (l >> 8) & 255; | |
1949 | u.c[3] = l & 255; | |
1950 | return u.result; | |
1951 | #else | |
ffed7fef | 1952 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
cea2e8a9 | 1953 | Perl_croak(aTHX_ "Unknown BYTEORDER\n"); |
a687059c | 1954 | #else |
79072805 LW |
1955 | register I32 o; |
1956 | register I32 s; | |
a687059c | 1957 | |
ffed7fef LW |
1958 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1959 | u.c[o & 0xf] = (l >> s) & 255; | |
a687059c LW |
1960 | } |
1961 | return u.result; | |
1962 | #endif | |
1963 | #endif | |
1964 | } | |
1965 | ||
1966 | long | |
864dbfa3 | 1967 | Perl_my_ntohl(pTHX_ long l) |
a687059c LW |
1968 | { |
1969 | union { | |
1970 | long l; | |
ffed7fef | 1971 | char c[sizeof(long)]; |
a687059c LW |
1972 | } u; |
1973 | ||
ffed7fef | 1974 | #if BYTEORDER == 0x1234 |
a687059c LW |
1975 | u.c[0] = (l >> 24) & 255; |
1976 | u.c[1] = (l >> 16) & 255; | |
1977 | u.c[2] = (l >> 8) & 255; | |
1978 | u.c[3] = l & 255; | |
1979 | return u.l; | |
1980 | #else | |
ffed7fef | 1981 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
cea2e8a9 | 1982 | Perl_croak(aTHX_ "Unknown BYTEORDER\n"); |
a687059c | 1983 | #else |
79072805 LW |
1984 | register I32 o; |
1985 | register I32 s; | |
a687059c LW |
1986 | |
1987 | u.l = l; | |
1988 | l = 0; | |
ffed7fef LW |
1989 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
1990 | l |= (u.c[o & 0xf] & 255) << s; | |
a687059c LW |
1991 | } |
1992 | return l; | |
1993 | #endif | |
1994 | #endif | |
1995 | } | |
1996 | ||
ffed7fef | 1997 | #endif /* BYTEORDER != 0x4321 */ |
988174c1 LW |
1998 | #endif /* MYSWAP */ |
1999 | ||
2000 | /* | |
2001 | * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'. | |
2002 | * If these functions are defined, | |
2003 | * the BYTEORDER is neither 0x1234 nor 0x4321. | |
2004 | * However, this is not assumed. | |
2005 | * -DWS | |
2006 | */ | |
2007 | ||
1109a392 | 2008 | #define HTOLE(name,type) \ |
988174c1 | 2009 | type \ |
ba106d47 | 2010 | name (register type n) \ |
988174c1 LW |
2011 | { \ |
2012 | union { \ | |
2013 | type value; \ | |
2014 | char c[sizeof(type)]; \ | |
2015 | } u; \ | |
bb7a0f54 MHM |
2016 | register U32 i; \ |
2017 | register U32 s = 0; \ | |
1109a392 | 2018 | for (i = 0; i < sizeof(u.c); i++, s += 8) { \ |
988174c1 LW |
2019 | u.c[i] = (n >> s) & 0xFF; \ |
2020 | } \ | |
2021 | return u.value; \ | |
2022 | } | |
2023 | ||
1109a392 | 2024 | #define LETOH(name,type) \ |
988174c1 | 2025 | type \ |
ba106d47 | 2026 | name (register type n) \ |
988174c1 LW |
2027 | { \ |
2028 | union { \ | |
2029 | type value; \ | |
2030 | char c[sizeof(type)]; \ | |
2031 | } u; \ | |
bb7a0f54 MHM |
2032 | register U32 i; \ |
2033 | register U32 s = 0; \ | |
988174c1 LW |
2034 | u.value = n; \ |
2035 | n = 0; \ | |
1109a392 MHM |
2036 | for (i = 0; i < sizeof(u.c); i++, s += 8) { \ |
2037 | n |= ((type)(u.c[i] & 0xFF)) << s; \ | |
988174c1 LW |
2038 | } \ |
2039 | return n; \ | |
2040 | } | |
2041 | ||
1109a392 MHM |
2042 | /* |
2043 | * Big-endian byte order functions. | |
2044 | */ | |
2045 | ||
2046 | #define HTOBE(name,type) \ | |
2047 | type \ | |
2048 | name (register type n) \ | |
2049 | { \ | |
2050 | union { \ | |
2051 | type value; \ | |
2052 | char c[sizeof(type)]; \ | |
2053 | } u; \ | |
bb7a0f54 MHM |
2054 | register U32 i; \ |
2055 | register U32 s = 8*(sizeof(u.c)-1); \ | |
1109a392 MHM |
2056 | for (i = 0; i < sizeof(u.c); i++, s -= 8) { \ |
2057 | u.c[i] = (n >> s) & 0xFF; \ | |
2058 | } \ | |
2059 | return u.value; \ | |
2060 | } | |
2061 | ||
2062 | #define BETOH(name,type) \ | |
2063 | type \ | |
2064 | name (register type n) \ | |
2065 | { \ | |
2066 | union { \ | |
2067 | type value; \ | |
2068 | char c[sizeof(type)]; \ | |
2069 | } u; \ | |
bb7a0f54 MHM |
2070 | register U32 i; \ |
2071 | register U32 s = 8*(sizeof(u.c)-1); \ | |
1109a392 MHM |
2072 | u.value = n; \ |
2073 | n = 0; \ | |
2074 | for (i = 0; i < sizeof(u.c); i++, s -= 8) { \ | |
2075 | n |= ((type)(u.c[i] & 0xFF)) << s; \ | |
2076 | } \ | |
2077 | return n; \ | |
2078 | } | |
2079 | ||
2080 | /* | |
2081 | * If we just can't do it... | |
2082 | */ | |
2083 | ||
2084 | #define NOT_AVAIL(name,type) \ | |
2085 | type \ | |
2086 | name (register type n) \ | |
2087 | { \ | |
2088 | Perl_croak_nocontext(#name "() not available"); \ | |
2089 | return n; /* not reached */ \ | |
2090 | } | |
2091 | ||
2092 | ||
988174c1 | 2093 | #if defined(HAS_HTOVS) && !defined(htovs) |
1109a392 | 2094 | HTOLE(htovs,short) |
988174c1 LW |
2095 | #endif |
2096 | #if defined(HAS_HTOVL) && !defined(htovl) | |
1109a392 | 2097 | HTOLE(htovl,long) |
988174c1 LW |
2098 | #endif |
2099 | #if defined(HAS_VTOHS) && !defined(vtohs) | |
1109a392 | 2100 | LETOH(vtohs,short) |
988174c1 LW |
2101 | #endif |
2102 | #if defined(HAS_VTOHL) && !defined(vtohl) | |
1109a392 MHM |
2103 | LETOH(vtohl,long) |
2104 | #endif | |
2105 | ||
2106 | #ifdef PERL_NEED_MY_HTOLE16 | |
2107 | # if U16SIZE == 2 | |
2108 | HTOLE(Perl_my_htole16,U16) | |
2109 | # else | |
2110 | NOT_AVAIL(Perl_my_htole16,U16) | |
2111 | # endif | |
2112 | #endif | |
2113 | #ifdef PERL_NEED_MY_LETOH16 | |
2114 | # if U16SIZE == 2 | |
2115 | LETOH(Perl_my_letoh16,U16) | |
2116 | # else | |
2117 | NOT_AVAIL(Perl_my_letoh16,U16) | |
2118 | # endif | |
2119 | #endif | |
2120 | #ifdef PERL_NEED_MY_HTOBE16 | |
2121 | # if U16SIZE == 2 | |
2122 | HTOBE(Perl_my_htobe16,U16) | |
2123 | # else | |
2124 | NOT_AVAIL(Perl_my_htobe16,U16) | |
2125 | # endif | |
2126 | #endif | |
2127 | #ifdef PERL_NEED_MY_BETOH16 | |
2128 | # if U16SIZE == 2 | |
2129 | BETOH(Perl_my_betoh16,U16) | |
2130 | # else | |
2131 | NOT_AVAIL(Perl_my_betoh16,U16) | |
2132 | # endif | |
2133 | #endif | |
2134 | ||
2135 | #ifdef PERL_NEED_MY_HTOLE32 | |
2136 | # if U32SIZE == 4 | |
2137 | HTOLE(Perl_my_htole32,U32) | |
2138 | # else | |
2139 | NOT_AVAIL(Perl_my_htole32,U32) | |
2140 | # endif | |
2141 | #endif | |
2142 | #ifdef PERL_NEED_MY_LETOH32 | |
2143 | # if U32SIZE == 4 | |
2144 | LETOH(Perl_my_letoh32,U32) | |
2145 | # else | |
2146 | NOT_AVAIL(Perl_my_letoh32,U32) | |
2147 | # endif | |
2148 | #endif | |
2149 | #ifdef PERL_NEED_MY_HTOBE32 | |
2150 | # if U32SIZE == 4 | |
2151 | HTOBE(Perl_my_htobe32,U32) | |
2152 | # else | |
2153 | NOT_AVAIL(Perl_my_htobe32,U32) | |
2154 | # endif | |
2155 | #endif | |
2156 | #ifdef PERL_NEED_MY_BETOH32 | |
2157 | # if U32SIZE == 4 | |
2158 | BETOH(Perl_my_betoh32,U32) | |
2159 | # else | |
2160 | NOT_AVAIL(Perl_my_betoh32,U32) | |
2161 | # endif | |
2162 | #endif | |
2163 | ||
2164 | #ifdef PERL_NEED_MY_HTOLE64 | |
2165 | # if U64SIZE == 8 | |
2166 | HTOLE(Perl_my_htole64,U64) | |
2167 | # else | |
2168 | NOT_AVAIL(Perl_my_htole64,U64) | |
2169 | # endif | |
2170 | #endif | |
2171 | #ifdef PERL_NEED_MY_LETOH64 | |
2172 | # if U64SIZE == 8 | |
2173 | LETOH(Perl_my_letoh64,U64) | |
2174 | # else | |
2175 | NOT_AVAIL(Perl_my_letoh64,U64) | |
2176 | # endif | |
2177 | #endif | |
2178 | #ifdef PERL_NEED_MY_HTOBE64 | |
2179 | # if U64SIZE == 8 | |
2180 | HTOBE(Perl_my_htobe64,U64) | |
2181 | # else | |
2182 | NOT_AVAIL(Perl_my_htobe64,U64) | |
2183 | # endif | |
2184 | #endif | |
2185 | #ifdef PERL_NEED_MY_BETOH64 | |
2186 | # if U64SIZE == 8 | |
2187 | BETOH(Perl_my_betoh64,U64) | |
2188 | # else | |
2189 | NOT_AVAIL(Perl_my_betoh64,U64) | |
2190 | # endif | |
988174c1 | 2191 | #endif |
a687059c | 2192 | |
1109a392 MHM |
2193 | #ifdef PERL_NEED_MY_HTOLES |
2194 | HTOLE(Perl_my_htoles,short) | |
2195 | #endif | |
2196 | #ifdef PERL_NEED_MY_LETOHS | |
2197 | LETOH(Perl_my_letohs,short) | |
2198 | #endif | |
2199 | #ifdef PERL_NEED_MY_HTOBES | |
2200 | HTOBE(Perl_my_htobes,short) | |
2201 | #endif | |
2202 | #ifdef PERL_NEED_MY_BETOHS | |
2203 | BETOH(Perl_my_betohs,short) | |
2204 | #endif | |
2205 | ||
2206 | #ifdef PERL_NEED_MY_HTOLEI | |
2207 | HTOLE(Perl_my_htolei,int) | |
2208 | #endif | |
2209 | #ifdef PERL_NEED_MY_LETOHI | |
2210 | LETOH(Perl_my_letohi,int) | |
2211 | #endif | |
2212 | #ifdef PERL_NEED_MY_HTOBEI | |
2213 | HTOBE(Perl_my_htobei,int) | |
2214 | #endif | |
2215 | #ifdef PERL_NEED_MY_BETOHI | |
2216 | BETOH(Perl_my_betohi,int) | |
2217 | #endif | |
2218 | ||
2219 | #ifdef PERL_NEED_MY_HTOLEL | |
2220 | HTOLE(Perl_my_htolel,long) | |
2221 | #endif | |
2222 | #ifdef PERL_NEED_MY_LETOHL | |
2223 | LETOH(Perl_my_letohl,long) | |
2224 | #endif | |
2225 | #ifdef PERL_NEED_MY_HTOBEL | |
2226 | HTOBE(Perl_my_htobel,long) | |
2227 | #endif | |
2228 | #ifdef PERL_NEED_MY_BETOHL | |
2229 | BETOH(Perl_my_betohl,long) | |
2230 | #endif | |
2231 | ||
2232 | void | |
2233 | Perl_my_swabn(void *ptr, int n) | |
2234 | { | |
2235 | register char *s = (char *)ptr; | |
2236 | register char *e = s + (n-1); | |
2237 | register char tc; | |
2238 | ||
7918f24d NC |
2239 | PERL_ARGS_ASSERT_MY_SWABN; |
2240 | ||
1109a392 MHM |
2241 | for (n /= 2; n > 0; s++, e--, n--) { |
2242 | tc = *s; | |
2243 | *s = *e; | |
2244 | *e = tc; | |
2245 | } | |
2246 | } | |
2247 | ||
4a7d1889 | 2248 | PerlIO * |
c9289b7b | 2249 | Perl_my_popen_list(pTHX_ const char *mode, int n, SV **args) |
4a7d1889 | 2250 | { |
e37778c2 | 2251 | #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(OS2) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(NETWARE) && !defined(__LIBCATAMOUNT__) |
97aff369 | 2252 | dVAR; |
1f852d0d NIS |
2253 | int p[2]; |
2254 | register I32 This, that; | |
2255 | register Pid_t pid; | |
2256 | SV *sv; | |
2257 | I32 did_pipes = 0; | |
2258 | int pp[2]; | |
2259 | ||
7918f24d NC |
2260 | PERL_ARGS_ASSERT_MY_POPEN_LIST; |
2261 | ||
1f852d0d NIS |
2262 | PERL_FLUSHALL_FOR_CHILD; |
2263 | This = (*mode == 'w'); | |
2264 | that = !This; | |
2265 | if (PL_tainting) { | |
2266 | taint_env(); | |
2267 | taint_proper("Insecure %s%s", "EXEC"); | |
2268 | } | |
2269 | if (PerlProc_pipe(p) < 0) | |
4608196e | 2270 | return NULL; |
1f852d0d NIS |
2271 | /* Try for another pipe pair for error return */ |
2272 | if (PerlProc_pipe(pp) >= 0) | |
2273 | did_pipes = 1; | |
52e18b1f | 2274 | while ((pid = PerlProc_fork()) < 0) { |
1f852d0d NIS |
2275 | if (errno != EAGAIN) { |
2276 | PerlLIO_close(p[This]); | |
4e6dfe71 | 2277 | PerlLIO_close(p[that]); |
1f852d0d NIS |
2278 | if (did_pipes) { |
2279 | PerlLIO_close(pp[0]); | |
2280 | PerlLIO_close(pp[1]); | |
2281 | } | |
4608196e | 2282 | return NULL; |
1f852d0d | 2283 | } |
b3647a36 SR |
2284 | if (ckWARN(WARN_PIPE)) |
2285 | Perl_warner(aTHX_ packWARN(WARN_PIPE), "Can't fork, trying again in 5 seconds"); | |
1f852d0d NIS |
2286 | sleep(5); |
2287 | } | |
2288 | if (pid == 0) { | |
2289 | /* Child */ | |
1f852d0d NIS |
2290 | #undef THIS |
2291 | #undef THAT | |
2292 | #define THIS that | |
2293 | #define THAT This | |
1f852d0d NIS |
2294 | /* Close parent's end of error status pipe (if any) */ |
2295 | if (did_pipes) { | |
2296 | PerlLIO_close(pp[0]); | |
2297 | #if defined(HAS_FCNTL) && defined(F_SETFD) | |
2298 | /* Close error pipe automatically if exec works */ | |
2299 | fcntl(pp[1], F_SETFD, FD_CLOEXEC); | |
2300 | #endif | |
2301 | } | |
2302 | /* Now dup our end of _the_ pipe to right position */ | |
2303 | if (p[THIS] != (*mode == 'r')) { | |
2304 | PerlLIO_dup2(p[THIS], *mode == 'r'); | |
2305 | PerlLIO_close(p[THIS]); | |
4e6dfe71 GS |
2306 | if (p[THAT] != (*mode == 'r')) /* if dup2() didn't close it */ |
2307 | PerlLIO_close(p[THAT]); /* close parent's end of _the_ pipe */ | |
1f852d0d | 2308 | } |
4e6dfe71 GS |
2309 | else |
2310 | PerlLIO_close(p[THAT]); /* close parent's end of _the_ pipe */ | |
1f852d0d NIS |
2311 | #if !defined(HAS_FCNTL) || !defined(F_SETFD) |
2312 | /* No automatic close - do it by hand */ | |
b7953727 JH |
2313 | # ifndef NOFILE |
2314 | # define NOFILE 20 | |
2315 | # endif | |
a080fe3d NIS |
2316 | { |
2317 | int fd; | |
2318 | ||
2319 | for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++) { | |
3aed30dc | 2320 | if (fd != pp[1]) |
a080fe3d NIS |
2321 | PerlLIO_close(fd); |
2322 | } | |
1f852d0d NIS |
2323 | } |
2324 | #endif | |
a0714e2c | 2325 | do_aexec5(NULL, args-1, args-1+n, pp[1], did_pipes); |
1f852d0d NIS |
2326 | PerlProc__exit(1); |
2327 | #undef THIS | |
2328 | #undef THAT | |
2329 | } | |
2330 | /* Parent */ | |
52e18b1f | 2331 | do_execfree(); /* free any memory malloced by child on fork */ |
1f852d0d NIS |
2332 | if (did_pipes) |
2333 | PerlLIO_close(pp[1]); | |
2334 | /* Keep the lower of the two fd numbers */ | |
2335 | if (p[that] < p[This]) { | |
2336 | PerlLIO_dup2(p[This], p[that]); | |
2337 | PerlLIO_close(p[This]); | |
2338 | p[This] = p[that]; | |
2339 | } | |
4e6dfe71 GS |
2340 | else |
2341 | PerlLIO_close(p[that]); /* close child's end of pipe */ | |
2342 | ||
1f852d0d | 2343 | sv = *av_fetch(PL_fdpid,p[This],TRUE); |
862a34c6 | 2344 | SvUPGRADE(sv,SVt_IV); |
45977657 | 2345 | SvIV_set(sv, pid); |
1f852d0d NIS |
2346 | PL_forkprocess = pid; |
2347 | /* If we managed to get status pipe check for exec fail */ | |
2348 | if (did_pipes && pid > 0) { | |
2349 | int errkid; | |
bb7a0f54 MHM |
2350 | unsigned n = 0; |
2351 | SSize_t n1; | |
1f852d0d NIS |
2352 | |
2353 | while (n < sizeof(int)) { | |
2354 | n1 = PerlLIO_read(pp[0], | |
2355 | (void*)(((char*)&errkid)+n), | |
2356 | (sizeof(int)) - n); | |
2357 | if (n1 <= 0) | |
2358 | break; | |
2359 | n += n1; | |
2360 | } | |
2361 | PerlLIO_close(pp[0]); | |
2362 | did_pipes = 0; | |
2363 | if (n) { /* Error */ | |
2364 | int pid2, status; | |
8c51524e | 2365 | PerlLIO_close(p[This]); |
1f852d0d NIS |
2366 | if (n != sizeof(int)) |
2367 | Perl_croak(aTHX_ "panic: kid popen errno read"); | |
2368 | do { | |
2369 | pid2 = wait4pid(pid, &status, 0); | |
2370 | } while (pid2 == -1 && errno == EINTR); | |
2371 | errno = errkid; /* Propagate errno from kid */ | |
4608196e | 2372 | return NULL; |
1f852d0d NIS |
2373 | } |
2374 | } | |
2375 | if (did_pipes) | |
2376 | PerlLIO_close(pp[0]); | |
2377 | return PerlIO_fdopen(p[This], mode); | |
2378 | #else | |
9d419b5f | 2379 | # ifdef OS2 /* Same, without fork()ing and all extra overhead... */ |
4e205ed6 | 2380 | return my_syspopen4(aTHX_ NULL, mode, n, args); |
9d419b5f | 2381 | # else |
4a7d1889 NIS |
2382 | Perl_croak(aTHX_ "List form of piped open not implemented"); |
2383 | return (PerlIO *) NULL; | |
9d419b5f | 2384 | # endif |
1f852d0d | 2385 | #endif |
4a7d1889 NIS |
2386 | } |
2387 | ||
5f05dabc | 2388 | /* VMS' my_popen() is in VMS.c, same with OS/2. */ |
e37778c2 | 2389 | #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(__LIBCATAMOUNT__) |
760ac839 | 2390 | PerlIO * |
3dd43144 | 2391 | Perl_my_popen(pTHX_ const char *cmd, const char *mode) |
a687059c | 2392 | { |
97aff369 | 2393 | dVAR; |
a687059c | 2394 | int p[2]; |
8ac85365 | 2395 | register I32 This, that; |
d8a83dd3 | 2396 | register Pid_t pid; |
79072805 | 2397 | SV *sv; |
bfce84ec | 2398 | const I32 doexec = !(*cmd == '-' && cmd[1] == '\0'); |
e446cec8 IZ |
2399 | I32 did_pipes = 0; |
2400 | int pp[2]; | |
a687059c | 2401 | |
7918f24d NC |
2402 | PERL_ARGS_ASSERT_MY_POPEN; |
2403 | ||
45bc9206 | 2404 | PERL_FLUSHALL_FOR_CHILD; |
ddcf38b7 IZ |
2405 | #ifdef OS2 |
2406 | if (doexec) { | |
23da6c43 | 2407 | return my_syspopen(aTHX_ cmd,mode); |
ddcf38b7 | 2408 | } |
a1d180c4 | 2409 | #endif |
8ac85365 NIS |
2410 | This = (*mode == 'w'); |
2411 | that = !This; | |
3280af22 | 2412 | if (doexec && PL_tainting) { |
bbce6d69 | 2413 | taint_env(); |
2414 | taint_proper("Insecure %s%s", "EXEC"); | |
d48672a2 | 2415 | } |
c2267164 | 2416 | if (PerlProc_pipe(p) < 0) |
4608196e | 2417 | return NULL; |
e446cec8 IZ |
2418 | if (doexec && PerlProc_pipe(pp) >= 0) |
2419 | did_pipes = 1; | |
52e18b1f | 2420 | while ((pid = PerlProc_fork()) < 0) { |
a687059c | 2421 | if (errno != EAGAIN) { |
6ad3d225 | 2422 | PerlLIO_close(p[This]); |
b5ac89c3 | 2423 | PerlLIO_close(p[that]); |
e446cec8 IZ |
2424 | if (did_pipes) { |
2425 | PerlLIO_close(pp[0]); | |
2426 | PerlLIO_close(pp[1]); | |
2427 | } | |
a687059c | 2428 | if (!doexec) |
b3647a36 | 2429 | Perl_croak(aTHX_ "Can't fork: %s", Strerror(errno)); |
4608196e | 2430 | return NULL; |
a687059c | 2431 | } |
b3647a36 SR |
2432 | if (ckWARN(WARN_PIPE)) |
2433 | Perl_warner(aTHX_ packWARN(WARN_PIPE), "Can't fork, trying again in 5 seconds"); | |
a687059c LW |
2434 | sleep(5); |
2435 | } | |
2436 | if (pid == 0) { | |
79072805 LW |
2437 | GV* tmpgv; |
2438 | ||
30ac6d9b GS |
2439 | #undef THIS |
2440 | #undef THAT | |
a687059c | 2441 | #define THIS that |
8ac85365 | 2442 | #define THAT This |
e446cec8 IZ |
2443 | if (did_pipes) { |
2444 | PerlLIO_close(pp[0]); | |
2445 | #if defined(HAS_FCNTL) && defined(F_SETFD) | |
2446 | fcntl(pp[1], F_SETFD, FD_CLOEXEC); | |
2447 | #endif | |
2448 | } | |
a687059c | 2449 | if (p[THIS] != (*mode == 'r')) { |
6ad3d225 GS |
2450 | PerlLIO_dup2(p[THIS], *mode == 'r'); |
2451 | PerlLIO_close(p[THIS]); | |
b5ac89c3 NIS |
2452 | if (p[THAT] != (*mode == 'r')) /* if dup2() didn't close it */ |
2453 | PerlLIO_close(p[THAT]); | |
a687059c | 2454 | } |
b5ac89c3 NIS |
2455 | else |
2456 | PerlLIO_close(p[THAT]); | |
4435c477 | 2457 | #ifndef OS2 |
a687059c | 2458 | if (doexec) { |
a0d0e21e | 2459 | #if !defined(HAS_FCNTL) || !defined(F_SETFD) |
ae986130 LW |
2460 | #ifndef NOFILE |
2461 | #define NOFILE 20 | |
2462 | #endif | |
a080fe3d | 2463 | { |
3aed30dc | 2464 | int fd; |
a080fe3d NIS |
2465 | |
2466 | for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++) | |
2467 | if (fd != pp[1]) | |
3aed30dc | 2468 | PerlLIO_close(fd); |
a080fe3d | 2469 | } |
ae986130 | 2470 | #endif |
a080fe3d NIS |
2471 | /* may or may not use the shell */ |
2472 | do_exec3(cmd, pp[1], did_pipes); | |
6ad3d225 | 2473 | PerlProc__exit(1); |
a687059c | 2474 | } |
4435c477 | 2475 | #endif /* defined OS2 */ |
713cef20 IZ |
2476 | |
2477 | #ifdef PERLIO_USING_CRLF | |
2478 | /* Since we circumvent IO layers when we manipulate low-level | |
2479 | filedescriptors directly, need to manually switch to the | |
2480 | default, binary, low-level mode; see PerlIOBuf_open(). */ | |
2481 | PerlLIO_setmode((*mode == 'r'), O_BINARY); | |
2482 | #endif | |
2483 | ||
fafc274c | 2484 | if ((tmpgv = gv_fetchpvs("$", GV_ADD|GV_NOTQUAL, SVt_PV))) { |
4d76a344 | 2485 | SvREADONLY_off(GvSV(tmpgv)); |
7766f137 | 2486 | sv_setiv(GvSV(tmpgv), PerlProc_getpid()); |
4d76a344 RGS |
2487 | SvREADONLY_on(GvSV(tmpgv)); |
2488 | } | |
2489 | #ifdef THREADS_HAVE_PIDS | |
2490 | PL_ppid = (IV)getppid(); | |
2491 | #endif | |
3280af22 | 2492 | PL_forkprocess = 0; |
ca0c25f6 | 2493 | #ifdef PERL_USES_PL_PIDSTATUS |
3280af22 | 2494 | hv_clear(PL_pidstatus); /* we have no children */ |
ca0c25f6 | 2495 | #endif |
4608196e | 2496 | return NULL; |
a687059c LW |
2497 | #undef THIS |
2498 | #undef THAT | |
2499 | } | |
b5ac89c3 | 2500 | do_execfree(); /* free any memory malloced by child on vfork */ |
e446cec8 IZ |
2501 | if (did_pipes) |
2502 | PerlLIO_close(pp[1]); | |
8ac85365 | 2503 | if (p[that] < p[This]) { |
6ad3d225 GS |
2504 | PerlLIO_dup2(p[This], p[that]); |
2505 | PerlLIO_close(p[This]); | |
8ac85365 | 2506 | p[This] = p[that]; |
62b28dd9 | 2507 | } |
b5ac89c3 NIS |
2508 | else |
2509 | PerlLIO_close(p[that]); | |
2510 | ||
3280af22 | 2511 | sv = *av_fetch(PL_fdpid,p[This],TRUE); |
862a34c6 | 2512 | SvUPGRADE(sv,SVt_IV); |
45977657 | 2513 | SvIV_set(sv, pid); |
3280af22 | 2514 | PL_forkprocess = pid; |
e446cec8 IZ |
2515 | if (did_pipes && pid > 0) { |
2516 | int errkid; | |
bb7a0f54 MHM |
2517 | unsigned n = 0; |
2518 | SSize_t n1; | |
e446cec8 IZ |
2519 | |
2520 | while (n < sizeof(int)) { | |
2521 | n1 = PerlLIO_read(pp[0], | |
2522 | (void*)(((char*)&errkid)+n), | |
2523 | (sizeof(int)) - n); | |
2524 | if (n1 <= 0) | |
2525 | break; | |
2526 | n += n1; | |
2527 | } | |
2f96c702 IZ |
2528 | PerlLIO_close(pp[0]); |
2529 | did_pipes = 0; | |
e446cec8 | 2530 | if (n) { /* Error */ |
faa466a7 | 2531 | int pid2, status; |
8c51524e | 2532 | PerlLIO_close(p[This]); |
e446cec8 | 2533 | if (n != sizeof(int)) |
cea2e8a9 | 2534 | Perl_croak(aTHX_ "panic: kid popen errno read"); |
faa466a7 RG |
2535 | do { |
2536 | pid2 = wait4pid(pid, &status, 0); | |
2537 | } while (pid2 == -1 && errno == EINTR); | |
e446cec8 | 2538 | errno = errkid; /* Propagate errno from kid */ |
4608196e | 2539 | return NULL; |
e446cec8 IZ |
2540 | } |
2541 | } | |
2542 | if (did_pipes) | |
2543 | PerlLIO_close(pp[0]); | |
8ac85365 | 2544 | return PerlIO_fdopen(p[This], mode); |
a687059c | 2545 | } |
7c0587c8 | 2546 | #else |
85ca448a | 2547 | #if defined(atarist) || defined(EPOC) |
7c0587c8 | 2548 | FILE *popen(); |
760ac839 | 2549 | PerlIO * |
cef6ea9d | 2550 | Perl_my_popen(pTHX_ const char *cmd, const char *mode) |
7c0587c8 | 2551 | { |
7918f24d | 2552 | PERL_ARGS_ASSERT_MY_POPEN; |
45bc9206 | 2553 | PERL_FLUSHALL_FOR_CHILD; |
a1d180c4 NIS |
2554 | /* Call system's popen() to get a FILE *, then import it. |
2555 | used 0 for 2nd parameter to PerlIO_importFILE; | |
2556 | apparently not used | |
2557 | */ | |
2558 | return PerlIO_importFILE(popen(cmd, mode), 0); | |
7c0587c8 | 2559 | } |
2b96b0a5 JH |
2560 | #else |
2561 | #if defined(DJGPP) | |
2562 | FILE *djgpp_popen(); | |
2563 | PerlIO * | |
cef6ea9d | 2564 | Perl_my_popen(pTHX_ const char *cmd, const char *mode) |
2b96b0a5 JH |
2565 | { |
2566 | PERL_FLUSHALL_FOR_CHILD; | |
2567 | /* Call system's popen() to get a FILE *, then import it. | |
2568 | used 0 for 2nd parameter to PerlIO_importFILE; | |
2569 | apparently not used | |
2570 | */ | |
2571 | return PerlIO_importFILE(djgpp_popen(cmd, mode), 0); | |
2572 | } | |
9c12f1e5 RGS |
2573 | #else |
2574 | #if defined(__LIBCATAMOUNT__) | |
2575 | PerlIO * | |
2576 | Perl_my_popen(pTHX_ const char *cmd, const char *mode) | |
2577 | { | |
2578 | return NULL; | |
2579 | } | |
2580 | #endif | |
2b96b0a5 | 2581 | #endif |
7c0587c8 LW |
2582 | #endif |
2583 | ||
2584 | #endif /* !DOSISH */ | |
a687059c | 2585 | |
52e18b1f GS |
2586 | /* this is called in parent before the fork() */ |
2587 | void | |
2588 | Perl_atfork_lock(void) | |
2589 | { | |
27da23d5 | 2590 | dVAR; |
3db8f154 | 2591 | #if defined(USE_ITHREADS) |
52e18b1f GS |
2592 | /* locks must be held in locking order (if any) */ |
2593 | # ifdef MYMALLOC | |
2594 | MUTEX_LOCK(&PL_malloc_mutex); | |
2595 | # endif | |
2596 | OP_REFCNT_LOCK; | |
2597 | #endif | |
2598 | } | |
2599 | ||
2600 | /* this is called in both parent and child after the fork() */ | |
2601 | void | |
2602 | Perl_atfork_unlock(void) | |
2603 | { | |
27da23d5 | 2604 | dVAR; |
3db8f154 | 2605 | #if defined(USE_ITHREADS) |
52e18b1f GS |
2606 | /* locks must be released in same order as in atfork_lock() */ |
2607 | # ifdef MYMALLOC | |
2608 | MUTEX_UNLOCK(&PL_malloc_mutex); | |
2609 | # endif | |
2610 | OP_REFCNT_UNLOCK; | |
2611 | #endif | |
2612 | } | |
2613 | ||
2614 | Pid_t | |
2615 | Perl_my_fork(void) | |
2616 | { | |
2617 | #if defined(HAS_FORK) | |
2618 | Pid_t pid; | |
3db8f154 | 2619 | #if defined(USE_ITHREADS) && !defined(HAS_PTHREAD_ATFORK) |
52e18b1f GS |
2620 | atfork_lock(); |
2621 | pid = fork(); | |
2622 | atfork_unlock(); | |
2623 | #else | |
2624 | /* atfork_lock() and atfork_unlock() are installed as pthread_atfork() | |
2625 | * handlers elsewhere in the code */ | |
2626 | pid = fork(); | |
2627 | #endif | |
2628 | return pid; | |
2629 | #else | |
2630 | /* this "canna happen" since nothing should be calling here if !HAS_FORK */ | |
2631 | Perl_croak_nocontext("fork() not available"); | |
b961a566 | 2632 | return 0; |
52e18b1f GS |
2633 | #endif /* HAS_FORK */ |
2634 | } | |
2635 | ||
748a9306 | 2636 | #ifdef DUMP_FDS |
35ff7856 | 2637 | void |
c9289b7b | 2638 | Perl_dump_fds(pTHX_ const char *const s) |
ae986130 LW |
2639 | { |
2640 | int fd; | |
c623ac67 | 2641 | Stat_t tmpstatbuf; |
ae986130 | 2642 | |
7918f24d NC |
2643 | PERL_ARGS_ASSERT_DUMP_FDS; |
2644 | ||
bf49b057 | 2645 | PerlIO_printf(Perl_debug_log,"%s", s); |
ae986130 | 2646 | for (fd = 0; fd < 32; fd++) { |
6ad3d225 | 2647 | if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0) |
bf49b057 | 2648 | PerlIO_printf(Perl_debug_log," %d",fd); |
ae986130 | 2649 | } |
bf49b057 | 2650 | PerlIO_printf(Perl_debug_log,"\n"); |
27da23d5 | 2651 | return; |
ae986130 | 2652 | } |
35ff7856 | 2653 | #endif /* DUMP_FDS */ |
ae986130 | 2654 | |
fe14fcc3 | 2655 | #ifndef HAS_DUP2 |
fec02dd3 | 2656 | int |
ba106d47 | 2657 | dup2(int oldfd, int newfd) |
a687059c | 2658 | { |
a0d0e21e | 2659 | #if defined(HAS_FCNTL) && defined(F_DUPFD) |
fec02dd3 AD |
2660 | if (oldfd == newfd) |
2661 | return oldfd; | |
6ad3d225 | 2662 | PerlLIO_close(newfd); |
fec02dd3 | 2663 | return fcntl(oldfd, F_DUPFD, newfd); |
62b28dd9 | 2664 | #else |
fc36a67e | 2665 | #define DUP2_MAX_FDS 256 |
2666 | int fdtmp[DUP2_MAX_FDS]; | |
79072805 | 2667 | I32 fdx = 0; |
ae986130 LW |
2668 | int fd; |
2669 | ||
fe14fcc3 | 2670 | if (oldfd == newfd) |
fec02dd3 | 2671 | return oldfd; |
6ad3d225 | 2672 | PerlLIO_close(newfd); |
fc36a67e | 2673 | /* good enough for low fd's... */ |
6ad3d225 | 2674 | while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) { |
fc36a67e | 2675 | if (fdx >= DUP2_MAX_FDS) { |
6ad3d225 | 2676 | PerlLIO_close(fd); |
fc36a67e | 2677 | fd = -1; |
2678 | break; | |
2679 | } | |
ae986130 | 2680 | fdtmp[fdx++] = fd; |
fc36a67e | 2681 | } |
ae986130 | 2682 | while (fdx > 0) |
6ad3d225 | 2683 | PerlLIO_close(fdtmp[--fdx]); |
fec02dd3 | 2684 | return fd; |
62b28dd9 | 2685 | #endif |
a687059c LW |
2686 | } |
2687 | #endif | |
2688 | ||
64ca3a65 | 2689 | #ifndef PERL_MICRO |
ff68c719 | 2690 | #ifdef HAS_SIGACTION |
2691 | ||
2692 | Sighandler_t | |
864dbfa3 | 2693 | Perl_rsignal(pTHX_ int signo, Sighandler_t handler) |
ff68c719 | 2694 | { |
27da23d5 | 2695 | dVAR; |
ff68c719 | 2696 | struct sigaction act, oact; |
2697 | ||
a10b1e10 JH |
2698 | #ifdef USE_ITHREADS |
2699 | /* only "parent" interpreter can diddle signals */ | |
2700 | if (PL_curinterp != aTHX) | |
8aad04aa | 2701 | return (Sighandler_t) SIG_ERR; |
a10b1e10 JH |
2702 | #endif |
2703 | ||
8aad04aa | 2704 | act.sa_handler = (void(*)(int))handler; |
ff68c719 | 2705 | sigemptyset(&act.sa_mask); |
2706 | act.sa_flags = 0; | |
2707 | #ifdef SA_RESTART | |
4ffa73a3 JH |
2708 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
2709 | act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */ | |
0a8e0eff | 2710 | #endif |
358837b8 | 2711 | #if defined(SA_NOCLDWAIT) && !defined(BSDish) /* See [perl #18849] */ |
8aad04aa | 2712 | if (signo == SIGCHLD && handler == (Sighandler_t) SIG_IGN) |
85264bed CS |
2713 | act.sa_flags |= SA_NOCLDWAIT; |
2714 | #endif | |
ff68c719 | 2715 | if (sigaction(signo, &act, &oact) == -1) |
8aad04aa | 2716 | return (Sighandler_t) SIG_ERR; |
ff68c719 | 2717 | else |
8aad04aa | 2718 | return (Sighandler_t) oact.sa_handler; |
ff68c719 | 2719 | } |
2720 | ||
2721 | Sighandler_t | |
864dbfa3 | 2722 | Perl_rsignal_state(pTHX_ int signo) |
ff68c719 | 2723 | { |
2724 | struct sigaction oact; | |
96a5add6 | 2725 | PERL_UNUSED_CONTEXT; |
ff68c719 | 2726 | |
2727 | if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1) | |
8aad04aa | 2728 | return (Sighandler_t) SIG_ERR; |
ff68c719 | 2729 | else |
8aad04aa | 2730 | return (Sighandler_t) oact.sa_handler; |
ff68c719 | 2731 | } |
2732 | ||
2733 | int | |
864dbfa3 | 2734 | Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save) |
ff68c719 | 2735 | { |
27da23d5 | 2736 | dVAR; |
ff68c719 | 2737 | struct sigaction act; |
2738 | ||
7918f24d NC |
2739 | PERL_ARGS_ASSERT_RSIGNAL_SAVE; |
2740 | ||
a10b1e10 JH |
2741 | #ifdef USE_ITHREADS |
2742 | /* only "parent" interpreter can diddle signals */ | |
2743 | if (PL_curinterp != aTHX) | |
2744 | return -1; | |
2745 | #endif | |
2746 | ||
8aad04aa | 2747 | act.sa_handler = (void(*)(int))handler; |
ff68c719 | 2748 | sigemptyset(&act.sa_mask); |
2749 | act.sa_flags = 0; | |
2750 | #ifdef SA_RESTART | |
4ffa73a3 JH |
2751 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
2752 | act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */ | |
0a8e0eff | 2753 | #endif |
36b5d377 | 2754 | #if defined(SA_NOCLDWAIT) && !defined(BSDish) /* See [perl #18849] */ |
8aad04aa | 2755 | if (signo == SIGCHLD && handler == (Sighandler_t) SIG_IGN) |
85264bed CS |
2756 | act.sa_flags |= SA_NOCLDWAIT; |
2757 | #endif | |
ff68c719 | 2758 | return sigaction(signo, &act, save); |
2759 | } | |
2760 | ||
2761 | int | |
864dbfa3 | 2762 | Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save) |
ff68c719 | 2763 | { |
27da23d5 | 2764 | dVAR; |
a10b1e10 JH |
2765 | #ifdef USE_ITHREADS |
2766 | /* only "parent" interpreter can diddle signals */ | |
2767 | if (PL_curinterp != aTHX) | |
2768 | return -1; | |
2769 | #endif | |
2770 | ||
ff68c719 | 2771 | return sigaction(signo, save, (struct sigaction *)NULL); |
2772 | } | |
2773 | ||
2774 | #else /* !HAS_SIGACTION */ | |
2775 | ||
2776 | Sighandler_t | |
864dbfa3 | 2777 | Perl_rsignal(pTHX_ int signo, Sighandler_t handler) |
ff68c719 | 2778 | { |
39f1703b | 2779 | #if defined(USE_ITHREADS) && !defined(WIN32) |
a10b1e10 JH |
2780 | /* only "parent" interpreter can diddle signals */ |
2781 | if (PL_curinterp != aTHX) | |
8aad04aa | 2782 | return (Sighandler_t) SIG_ERR; |
a10b1e10 JH |
2783 | #endif |
2784 | ||
6ad3d225 | 2785 | return PerlProc_signal(signo, handler); |
ff68c719 | 2786 | } |
2787 | ||
fabdb6c0 | 2788 | static Signal_t |
4e35701f | 2789 | sig_trap(int signo) |
ff68c719 | 2790 | { |
27da23d5 JH |
2791 | dVAR; |
2792 | PL_sig_trapped++; | |
ff68c719 | 2793 | } |
2794 | ||
2795 | Sighandler_t | |
864dbfa3 | 2796 | Perl_rsignal_state(pTHX_ int signo) |
ff68c719 | 2797 | { |
27da23d5 | 2798 | dVAR; |
ff68c719 | 2799 | Sighandler_t oldsig; |
2800 | ||
39f1703b | 2801 | #if defined(USE_ITHREADS) && !defined(WIN32) |
a10b1e10 JH |
2802 | /* only "parent" interpreter can diddle signals */ |
2803 | if (PL_curinterp != aTHX) | |
8aad04aa | 2804 | return (Sighandler_t) SIG_ERR; |
a10b1e10 JH |
2805 | #endif |
2806 | ||
27da23d5 | 2807 | PL_sig_trapped = 0; |
6ad3d225 GS |
2808 | oldsig = PerlProc_signal(signo, sig_trap); |
2809 | PerlProc_signal(signo, oldsig); | |
27da23d5 | 2810 | if (PL_sig_trapped) |
3aed30dc | 2811 | PerlProc_kill(PerlProc_getpid(), signo); |
ff68c719 | 2812 | return oldsig; |
2813 | } | |
2814 | ||
2815 | int | |
864dbfa3 | 2816 | Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save) |
ff68c719 | 2817 | { |
39f1703b | 2818 | #if defined(USE_ITHREADS) && !defined(WIN32) |
a10b1e10 JH |
2819 | /* only "parent" interpreter can diddle signals */ |
2820 | if (PL_curinterp != aTHX) | |
2821 | return -1; | |
2822 | #endif | |
6ad3d225 | 2823 | *save = PerlProc_signal(signo, handler); |
8aad04aa | 2824 | return (*save == (Sighandler_t) SIG_ERR) ? -1 : 0; |
ff68c719 | 2825 | } |
2826 | ||
2827 | int | |
864dbfa3 | 2828 | Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save) |
ff68c719 | 2829 | { |
39f1703b | 2830 | #if defined(USE_ITHREADS) && !defined(WIN32) |
a10b1e10 JH |
2831 | /* only "parent" interpreter can diddle signals */ |
2832 | if (PL_curinterp != aTHX) | |
2833 | return -1; | |
2834 | #endif | |
8aad04aa | 2835 | return (PerlProc_signal(signo, *save) == (Sighandler_t) SIG_ERR) ? -1 : 0; |
ff68c719 | 2836 | } |
2837 | ||
2838 | #endif /* !HAS_SIGACTION */ | |
64ca3a65 | 2839 | #endif /* !PERL_MICRO */ |
ff68c719 | 2840 | |
5f05dabc | 2841 | /* VMS' my_pclose() is in VMS.c; same with OS/2 */ |
e37778c2 | 2842 | #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(__LIBCATAMOUNT__) |
79072805 | 2843 | I32 |
864dbfa3 | 2844 | Perl_my_pclose(pTHX_ PerlIO *ptr) |
a687059c | 2845 | { |
97aff369 | 2846 | dVAR; |
ff68c719 | 2847 | Sigsave_t hstat, istat, qstat; |
a687059c | 2848 | int status; |
a0d0e21e | 2849 | SV **svp; |
d8a83dd3 JH |
2850 | Pid_t pid; |
2851 | Pid_t pid2; | |
03136e13 | 2852 | bool close_failed; |
4ee39169 | 2853 | dSAVEDERRNO; |
a687059c | 2854 | |
3280af22 | 2855 | svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE); |
25d92023 | 2856 | pid = (SvTYPE(*svp) == SVt_IV) ? SvIVX(*svp) : -1; |
a0d0e21e | 2857 | SvREFCNT_dec(*svp); |
3280af22 | 2858 | *svp = &PL_sv_undef; |
ddcf38b7 IZ |
2859 | #ifdef OS2 |
2860 | if (pid == -1) { /* Opened by popen. */ | |
2861 | return my_syspclose(ptr); | |
2862 | } | |
a1d180c4 | 2863 | #endif |
f1618b10 CS |
2864 | close_failed = (PerlIO_close(ptr) == EOF); |
2865 | SAVE_ERRNO; | |
7c0587c8 | 2866 | #ifdef UTS |
6ad3d225 | 2867 | if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */ |
7c0587c8 | 2868 | #endif |
64ca3a65 | 2869 | #ifndef PERL_MICRO |
8aad04aa JH |
2870 | rsignal_save(SIGHUP, (Sighandler_t) SIG_IGN, &hstat); |
2871 | rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &istat); | |
2872 | rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qstat); | |
64ca3a65 | 2873 | #endif |
748a9306 | 2874 | do { |
1d3434b8 GS |
2875 | pid2 = wait4pid(pid, &status, 0); |
2876 | } while (pid2 == -1 && errno == EINTR); | |
64ca3a65 | 2877 | #ifndef PERL_MICRO |
ff68c719 | 2878 | rsignal_restore(SIGHUP, &hstat); |
2879 | rsignal_restore(SIGINT, &istat); | |
2880 | rsignal_restore(SIGQUIT, &qstat); | |
64ca3a65 | 2881 | #endif |
03136e13 | 2882 | if (close_failed) { |
4ee39169 | 2883 | RESTORE_ERRNO; |
03136e13 CS |
2884 | return -1; |
2885 | } | |
1d3434b8 | 2886 | return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status)); |
20188a90 | 2887 | } |
9c12f1e5 RGS |
2888 | #else |
2889 | #if defined(__LIBCATAMOUNT__) | |
2890 | I32 | |
2891 | Perl_my_pclose(pTHX_ PerlIO *ptr) | |
2892 | { | |
2893 | return -1; | |
2894 | } | |
2895 | #endif | |
4633a7c4 LW |
2896 | #endif /* !DOSISH */ |
2897 | ||
e37778c2 | 2898 | #if (!defined(DOSISH) || defined(OS2) || defined(WIN32) || defined(NETWARE)) && !defined(__LIBCATAMOUNT__) |
79072805 | 2899 | I32 |
d8a83dd3 | 2900 | Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags) |
20188a90 | 2901 | { |
97aff369 | 2902 | dVAR; |
27da23d5 | 2903 | I32 result = 0; |
7918f24d | 2904 | PERL_ARGS_ASSERT_WAIT4PID; |
b7953727 JH |
2905 | if (!pid) |
2906 | return -1; | |
ca0c25f6 | 2907 | #ifdef PERL_USES_PL_PIDSTATUS |
b7953727 | 2908 | { |
3aed30dc | 2909 | if (pid > 0) { |
12072db5 NC |
2910 | /* The keys in PL_pidstatus are now the raw 4 (or 8) bytes of the |
2911 | pid, rather than a string form. */ | |
c4420975 | 2912 | SV * const * const svp = hv_fetch(PL_pidstatus,(const char*) &pid,sizeof(Pid_t),FALSE); |
3aed30dc HS |
2913 | if (svp && *svp != &PL_sv_undef) { |
2914 | *statusp = SvIVX(*svp); | |
12072db5 NC |
2915 | (void)hv_delete(PL_pidstatus,(const char*) &pid,sizeof(Pid_t), |
2916 | G_DISCARD); | |
3aed30dc HS |
2917 | return pid; |
2918 | } | |
2919 | } | |
2920 | else { | |
2921 | HE *entry; | |
2922 | ||
2923 | hv_iterinit(PL_pidstatus); | |
2924 | if ((entry = hv_iternext(PL_pidstatus))) { | |
c4420975 | 2925 | SV * const sv = hv_iterval(PL_pidstatus,entry); |
7ea75b61 | 2926 | I32 len; |
0bcc34c2 | 2927 | const char * const spid = hv_iterkey(entry,&len); |
27da23d5 | 2928 | |
12072db5 NC |
2929 | assert (len == sizeof(Pid_t)); |
2930 | memcpy((char *)&pid, spid, len); | |
3aed30dc | 2931 | *statusp = SvIVX(sv); |
7b9a3241 NC |
2932 | /* The hash iterator is currently on this entry, so simply |
2933 | calling hv_delete would trigger the lazy delete, which on | |
2934 | aggregate does more work, beacuse next call to hv_iterinit() | |
2935 | would spot the flag, and have to call the delete routine, | |
2936 | while in the meantime any new entries can't re-use that | |
2937 | memory. */ | |
2938 | hv_iterinit(PL_pidstatus); | |
7ea75b61 | 2939 | (void)hv_delete(PL_pidstatus,spid,len,G_DISCARD); |
3aed30dc HS |
2940 | return pid; |
2941 | } | |
20188a90 LW |
2942 | } |
2943 | } | |
68a29c53 | 2944 | #endif |
79072805 | 2945 | #ifdef HAS_WAITPID |
367f3c24 IZ |
2946 | # ifdef HAS_WAITPID_RUNTIME |
2947 | if (!HAS_WAITPID_RUNTIME) | |
2948 | goto hard_way; | |
2949 | # endif | |
cddd4526 | 2950 | result = PerlProc_waitpid(pid,statusp,flags); |
dfcfdb64 | 2951 | goto finish; |
367f3c24 IZ |
2952 | #endif |
2953 | #if !defined(HAS_WAITPID) && defined(HAS_WAIT4) | |
4608196e | 2954 | result = wait4((pid==-1)?0:pid,statusp,flags,NULL); |
dfcfdb64 | 2955 | goto finish; |
367f3c24 | 2956 | #endif |
ca0c25f6 | 2957 | #ifdef PERL_USES_PL_PIDSTATUS |
27da23d5 | 2958 | #if defined(HAS_WAITPID) && defined(HAS_WAITPID_RUNTIME) |
367f3c24 | 2959 | hard_way: |
27da23d5 | 2960 | #endif |
a0d0e21e | 2961 | { |
a0d0e21e | 2962 | if (flags) |
cea2e8a9 | 2963 | Perl_croak(aTHX_ "Can't do waitpid with flags"); |
a0d0e21e | 2964 | else { |
76e3520e | 2965 | while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0) |
a0d0e21e LW |
2966 | pidgone(result,*statusp); |
2967 | if (result < 0) | |
2968 | *statusp = -1; | |
2969 | } | |
a687059c LW |
2970 | } |
2971 | #endif | |
27da23d5 | 2972 | #if defined(HAS_WAITPID) || defined(HAS_WAIT4) |
dfcfdb64 | 2973 | finish: |
27da23d5 | 2974 | #endif |
cddd4526 NIS |
2975 | if (result < 0 && errno == EINTR) { |
2976 | PERL_ASYNC_CHECK(); | |
48dbb59e | 2977 | errno = EINTR; /* reset in case a signal handler changed $! */ |
cddd4526 NIS |
2978 | } |
2979 | return result; | |
a687059c | 2980 | } |
2986a63f | 2981 | #endif /* !DOSISH || OS2 || WIN32 || NETWARE */ |
a687059c | 2982 | |
ca0c25f6 | 2983 | #ifdef PERL_USES_PL_PIDSTATUS |
7c0587c8 | 2984 | void |
ed4173ef | 2985 | S_pidgone(pTHX_ Pid_t pid, int status) |
a687059c | 2986 | { |
79072805 | 2987 | register SV *sv; |
a687059c | 2988 | |
12072db5 | 2989 | sv = *hv_fetch(PL_pidstatus,(const char*)&pid,sizeof(Pid_t),TRUE); |
862a34c6 | 2990 | SvUPGRADE(sv,SVt_IV); |
45977657 | 2991 | SvIV_set(sv, status); |
20188a90 | 2992 | return; |
a687059c | 2993 | } |
ca0c25f6 | 2994 | #endif |
a687059c | 2995 | |
85ca448a | 2996 | #if defined(atarist) || defined(OS2) || defined(EPOC) |
7c0587c8 | 2997 | int pclose(); |
ddcf38b7 IZ |
2998 | #ifdef HAS_FORK |
2999 | int /* Cannot prototype with I32 | |
3000 | in os2ish.h. */ | |
ba106d47 | 3001 | my_syspclose(PerlIO *ptr) |
ddcf38b7 | 3002 | #else |
79072805 | 3003 | I32 |
864dbfa3 | 3004 | Perl_my_pclose(pTHX_ PerlIO *ptr) |
a1d180c4 | 3005 | #endif |
a687059c | 3006 | { |
760ac839 | 3007 | /* Needs work for PerlIO ! */ |
c4420975 | 3008 | FILE * const f = PerlIO_findFILE(ptr); |
7452cf6a | 3009 | const I32 result = pclose(f); |
2b96b0a5 JH |
3010 | PerlIO_releaseFILE(ptr,f); |
3011 | return result; | |
3012 | } | |
3013 | #endif | |
3014 | ||
933fea7f | 3015 | #if defined(DJGPP) |
2b96b0a5 JH |
3016 | int djgpp_pclose(); |
3017 | I32 | |
3018 | Perl_my_pclose(pTHX_ PerlIO *ptr) | |
3019 | { | |
3020 | /* Needs work for PerlIO ! */ | |
c4420975 | 3021 | FILE * const f = PerlIO_findFILE(ptr); |
2b96b0a5 | 3022 | I32 result = djgpp_pclose(f); |
933fea7f | 3023 | result = (result << 8) & 0xff00; |
760ac839 LW |
3024 | PerlIO_releaseFILE(ptr,f); |
3025 | return result; | |
a687059c | 3026 | } |
7c0587c8 | 3027 | #endif |
9f68db38 LW |
3028 | |
3029 | void | |
864dbfa3 | 3030 | Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count) |
9f68db38 | 3031 | { |
79072805 | 3032 | register I32 todo; |
c4420975 | 3033 | register const char * const frombase = from; |
96a5add6 | 3034 | PERL_UNUSED_CONTEXT; |
9f68db38 | 3035 | |
7918f24d NC |
3036 | PERL_ARGS_ASSERT_REPEATCPY; |
3037 | ||
9f68db38 | 3038 | if (len == 1) { |
08105a92 | 3039 | register const char c = *from; |
9f68db38 | 3040 | while (count-- > 0) |
5926133d | 3041 | *to++ = c; |
9f68db38 LW |
3042 | return; |
3043 | } | |
3044 | while (count-- > 0) { | |
3045 | for (todo = len; todo > 0; todo--) { | |
3046 | *to++ = *from++; | |
3047 | } | |
3048 | from = frombase; | |
3049 | } | |
3050 | } | |
0f85fab0 | 3051 | |
fe14fcc3 | 3052 | #ifndef HAS_RENAME |
79072805 | 3053 | I32 |
4373e329 | 3054 | Perl_same_dirent(pTHX_ const char *a, const char *b) |
62b28dd9 | 3055 | { |
93a17b20 LW |
3056 | char *fa = strrchr(a,'/'); |
3057 | char *fb = strrchr(b,'/'); | |
c623ac67 GS |
3058 | Stat_t tmpstatbuf1; |
3059 | Stat_t tmpstatbuf2; | |
c4420975 | 3060 | SV * const tmpsv = sv_newmortal(); |
62b28dd9 | 3061 | |
7918f24d NC |
3062 | PERL_ARGS_ASSERT_SAME_DIRENT; |
3063 | ||
62b28dd9 LW |
3064 | if (fa) |
3065 | fa++; | |
3066 | else | |
3067 | fa = a; | |
3068 | if (fb) | |
3069 | fb++; | |
3070 | else | |
3071 | fb = b; | |
3072 | if (strNE(a,b)) | |
3073 | return FALSE; | |
3074 | if (fa == a) | |
76f68e9b | 3075 | sv_setpvs(tmpsv, "."); |
62b28dd9 | 3076 | else |
46fc3d4c | 3077 | sv_setpvn(tmpsv, a, fa - a); |
95a20fc0 | 3078 | if (PerlLIO_stat(SvPVX_const(tmpsv), &tmpstatbuf1) < 0) |
62b28dd9 LW |
3079 | return FALSE; |
3080 | if (fb == b) | |
76f68e9b | 3081 | sv_setpvs(tmpsv, "."); |
62b28dd9 | 3082 | else |
46fc3d4c | 3083 | sv_setpvn(tmpsv, b, fb - b); |
95a20fc0 | 3084 | if (PerlLIO_stat(SvPVX_const(tmpsv), &tmpstatbuf2) < 0) |
62b28dd9 LW |
3085 | return FALSE; |
3086 | return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev && | |
3087 | tmpstatbuf1.st_ino == tmpstatbuf2.st_ino; | |
3088 | } | |
fe14fcc3 LW |
3089 | #endif /* !HAS_RENAME */ |
3090 | ||
491527d0 | 3091 | char* |
7f315aed NC |
3092 | Perl_find_script(pTHX_ const char *scriptname, bool dosearch, |
3093 | const char *const *const search_ext, I32 flags) | |
491527d0 | 3094 | { |
97aff369 | 3095 | dVAR; |
bd61b366 SS |
3096 | const char *xfound = NULL; |
3097 | char *xfailed = NULL; | |
0f31cffe | 3098 | char tmpbuf[MAXPATHLEN]; |
491527d0 | 3099 | register char *s; |
5f74f29c | 3100 | I32 len = 0; |
491527d0 | 3101 | int retval; |
39a02377 | 3102 | char *bufend; |
491527d0 GS |
3103 | #if defined(DOSISH) && !defined(OS2) && !defined(atarist) |
3104 | # define SEARCH_EXTS ".bat", ".cmd", NULL | |
3105 | # define MAX_EXT_LEN 4 | |
3106 | #endif | |
3107 | #ifdef OS2 | |
3108 | # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL | |
3109 | # define MAX_EXT_LEN 4 | |
3110 | #endif | |
3111 | #ifdef VMS | |
3112 | # define SEARCH_EXTS ".pl", ".com", NULL | |
3113 | # define MAX_EXT_LEN 4 | |
3114 | #endif | |
3115 | /* additional extensions to try in each dir if scriptname not found */ | |
3116 | #ifdef SEARCH_EXTS | |
0bcc34c2 | 3117 | static const char *const exts[] = { SEARCH_EXTS }; |
7f315aed | 3118 | const char *const *const ext = search_ext ? search_ext : exts; |
491527d0 | 3119 | int extidx = 0, i = 0; |
bd61b366 | 3120 | const char *curext = NULL; |
491527d0 | 3121 | #else |
53c1dcc0 | 3122 | PERL_UNUSED_ARG(search_ext); |
491527d0 GS |
3123 | # define MAX_EXT_LEN 0 |
3124 | #endif | |
3125 | ||
7918f24d NC |
3126 | PERL_ARGS_ASSERT_FIND_SCRIPT; |
3127 | ||
491527d0 GS |
3128 | /* |
3129 | * If dosearch is true and if scriptname does not contain path | |
3130 | * delimiters, search the PATH for scriptname. | |
3131 | * | |
3132 | * If SEARCH_EXTS is also defined, will look for each | |
3133 | * scriptname{SEARCH_EXTS} whenever scriptname is not found | |
3134 | * while searching the PATH. | |
3135 | * | |
3136 | * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search | |
3137 | * proceeds as follows: | |
3138 | * If DOSISH or VMSISH: | |
3139 | * + look for ./scriptname{,.foo,.bar} | |
3140 | * + search the PATH for scriptname{,.foo,.bar} | |
3141 | * | |
3142 | * If !DOSISH: | |
3143 | * + look *only* in the PATH for scriptname{,.foo,.bar} (note | |
3144 | * this will not look in '.' if it's not in the PATH) | |
3145 | */ | |
84486fc6 | 3146 | tmpbuf[0] = '\0'; |
491527d0 GS |
3147 | |
3148 | #ifdef VMS | |
3149 | # ifdef ALWAYS_DEFTYPES | |
3150 | len = strlen(scriptname); | |
3151 | if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') { | |
c4420975 | 3152 | int idx = 0, deftypes = 1; |
491527d0 GS |
3153 | bool seen_dot = 1; |
3154 | ||
bd61b366 | 3155 | const int hasdir = !dosearch || (strpbrk(scriptname,":[</") != NULL); |
491527d0 GS |
3156 | # else |
3157 | if (dosearch) { | |
c4420975 | 3158 | int idx = 0, deftypes = 1; |
491527d0 GS |
3159 | bool seen_dot = 1; |
3160 | ||
bd61b366 | 3161 | const int hasdir = (strpbrk(scriptname,":[</") != NULL); |
491527d0 GS |
3162 | # endif |
3163 | /* The first time through, just add SEARCH_EXTS to whatever we | |
3164 | * already have, so we can check for default file types. */ | |
3165 | while (deftypes || | |
84486fc6 | 3166 | (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) ) |
491527d0 GS |
3167 | { |
3168 | if (deftypes) { | |
3169 | deftypes = 0; | |
84486fc6 | 3170 | *tmpbuf = '\0'; |
491527d0 | 3171 | } |
84486fc6 GS |
3172 | if ((strlen(tmpbuf) + strlen(scriptname) |
3173 | + MAX_EXT_LEN) >= sizeof tmpbuf) | |
491527d0 | 3174 | continue; /* don't search dir with too-long name */ |
6fca0082 | 3175 | my_strlcat(tmpbuf, scriptname, sizeof(tmpbuf)); |
491527d0 GS |
3176 | #else /* !VMS */ |
3177 | ||
3178 | #ifdef DOSISH | |
3179 | if (strEQ(scriptname, "-")) | |
3180 | dosearch = 0; | |
3181 | if (dosearch) { /* Look in '.' first. */ | |
fe2774ed | 3182 | const char *cur = scriptname; |
491527d0 GS |
3183 | #ifdef SEARCH_EXTS |
3184 | if ((curext = strrchr(scriptname,'.'))) /* possible current ext */ | |
3185 | while (ext[i]) | |
3186 | if (strEQ(ext[i++],curext)) { | |
3187 | extidx = -1; /* already has an ext */ | |
3188 | break; | |
3189 | } | |
3190 | do { | |
3191 | #endif | |
3192 | DEBUG_p(PerlIO_printf(Perl_debug_log, | |
3193 | "Looking for %s\n",cur)); | |
017f25f1 IZ |
3194 | if (PerlLIO_stat(cur,&PL_statbuf) >= 0 |
3195 | && !S_ISDIR(PL_statbuf.st_mode)) { | |
491527d0 GS |
3196 | dosearch = 0; |
3197 | scriptname = cur; | |
3198 | #ifdef SEARCH_EXTS | |
3199 | break; | |
3200 | #endif | |
3201 | } | |
3202 | #ifdef SEARCH_EXTS | |
3203 | if (cur == scriptname) { | |
3204 | len = strlen(scriptname); | |
84486fc6 | 3205 | if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf)) |
491527d0 | 3206 | break; |
9e4425f7 SH |
3207 | my_strlcpy(tmpbuf, scriptname, sizeof(tmpbuf)); |
3208 | cur = tmpbuf; | |
491527d0 GS |
3209 | } |
3210 | } while (extidx >= 0 && ext[extidx] /* try an extension? */ | |
6fca0082 | 3211 | && my_strlcpy(tmpbuf+len, ext[extidx++], sizeof(tmpbuf) - len)); |
491527d0 GS |
3212 | #endif |
3213 | } | |
3214 | #endif | |
3215 | ||
3216 | if (dosearch && !strchr(scriptname, '/') | |
3217 | #ifdef DOSISH | |
3218 | && !strchr(scriptname, '\\') | |
3219 | #endif | |
cd39f2b6 | 3220 | && (s = PerlEnv_getenv("PATH"))) |
cd39f2b6 | 3221 | { |
491527d0 | 3222 | bool seen_dot = 0; |
92f0c265 | 3223 | |
39a02377 DM |
3224 | bufend = s + strlen(s); |
3225 | while (s < bufend) { | |
491527d0 GS |
3226 | #if defined(atarist) || defined(DOSISH) |
3227 | for (len = 0; *s | |
3228 | # ifdef atarist | |
3229 | && *s != ',' | |
3230 | # endif | |
3231 | && *s != ';'; len++, s++) { | |
84486fc6 GS |
3232 | if (len < sizeof tmpbuf) |
3233 | tmpbuf[len] = *s; | |
491527d0 | 3234 | } |
84486fc6 GS |
3235 | if (len < sizeof tmpbuf) |
3236 | tmpbuf[len] = '\0'; | |
491527d0 | 3237 | #else /* ! (atarist || DOSISH) */ |
39a02377 | 3238 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, bufend, |
491527d0 GS |
3239 | ':', |
3240 | &len); | |
3241 | #endif /* ! (atarist || DOSISH) */ | |
39a02377 | 3242 | if (s < bufend) |
491527d0 | 3243 | s++; |
84486fc6 | 3244 | if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf) |
491527d0 GS |
3245 | continue; /* don't search dir with too-long name */ |
3246 | if (len | |
cd86ed9d | 3247 | # if defined(atarist) || defined(DOSISH) |
84486fc6 GS |
3248 | && tmpbuf[len - 1] != '/' |
3249 | && tmpbuf[len - 1] != '\\' | |
490a0e98 | 3250 | # endif |
491527d0 | 3251 | ) |
84486fc6 GS |
3252 | tmpbuf[len++] = '/'; |
3253 | if (len == 2 && tmpbuf[0] == '.') | |
491527d0 | 3254 | seen_dot = 1; |
28f0d0ec | 3255 | (void)my_strlcpy(tmpbuf + len, scriptname, sizeof(tmpbuf) - len); |
491527d0 GS |
3256 | #endif /* !VMS */ |
3257 | ||
3258 | #ifdef SEARCH_EXTS | |
84486fc6 | 3259 | len = strlen(tmpbuf); |
491527d0 GS |
3260 | if (extidx > 0) /* reset after previous loop */ |
3261 | extidx = 0; | |
3262 | do { | |
3263 | #endif | |
84486fc6 | 3264 | DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf)); |
3280af22 | 3265 | retval = PerlLIO_stat(tmpbuf,&PL_statbuf); |
017f25f1 IZ |
3266 | if (S_ISDIR(PL_statbuf.st_mode)) { |
3267 | retval = -1; | |
3268 | } | |
491527d0 GS |
3269 | #ifdef SEARCH_EXTS |
3270 | } while ( retval < 0 /* not there */ | |
3271 | && extidx>=0 && ext[extidx] /* try an extension? */ | |
6fca0082 | 3272 | && my_strlcpy(tmpbuf+len, ext[extidx++], sizeof(tmpbuf) - len) |
491527d0 GS |
3273 | ); |
3274 | #endif | |
3275 | if (retval < 0) | |
3276 | continue; | |
3280af22 NIS |
3277 | if (S_ISREG(PL_statbuf.st_mode) |
3278 | && cando(S_IRUSR,TRUE,&PL_statbuf) | |
e37778c2 | 3279 | #if !defined(DOSISH) |
3280af22 | 3280 | && cando(S_IXUSR,TRUE,&PL_statbuf) |
491527d0 GS |
3281 | #endif |
3282 | ) | |
3283 | { | |
3aed30dc | 3284 | xfound = tmpbuf; /* bingo! */ |
491527d0 GS |
3285 | break; |
3286 | } | |
3287 | if (!xfailed) | |
84486fc6 | 3288 | xfailed = savepv(tmpbuf); |
491527d0 GS |
3289 | } |
3290 | #ifndef DOSISH | |
017f25f1 | 3291 | if (!xfound && !seen_dot && !xfailed && |
a1d180c4 | 3292 | (PerlLIO_stat(scriptname,&PL_statbuf) < 0 |
017f25f1 | 3293 | || S_ISDIR(PL_statbuf.st_mode))) |
491527d0 GS |
3294 | #endif |
3295 | seen_dot = 1; /* Disable message. */ | |
9ccb31f9 GS |
3296 | if (!xfound) { |
3297 | if (flags & 1) { /* do or die? */ | |
3aed30dc | 3298 | Perl_croak(aTHX_ "Can't %s %s%s%s", |
9ccb31f9 GS |
3299 | (xfailed ? "execute" : "find"), |
3300 | (xfailed ? xfailed : scriptname), | |
3301 | (xfailed ? "" : " on PATH"), | |
3302 | (xfailed || seen_dot) ? "" : ", '.' not in PATH"); | |
3303 | } | |
bd61b366 | 3304 | scriptname = NULL; |
9ccb31f9 | 3305 | } |
43c5f42d | 3306 | Safefree(xfailed); |
491527d0 GS |
3307 | scriptname = xfound; |
3308 | } | |
bd61b366 | 3309 | return (scriptname ? savepv(scriptname) : NULL); |
491527d0 GS |
3310 | } |
3311 | ||
ba869deb GS |
3312 | #ifndef PERL_GET_CONTEXT_DEFINED |
3313 | ||
3314 | void * | |
3315 | Perl_get_context(void) | |
3316 | { | |
27da23d5 | 3317 | dVAR; |
3db8f154 | 3318 | #if defined(USE_ITHREADS) |
ba869deb GS |
3319 | # ifdef OLD_PTHREADS_API |
3320 | pthread_addr_t t; | |
3321 | if (pthread_getspecific(PL_thr_key, &t)) | |
3322 | Perl_croak_nocontext("panic: pthread_getspecific"); | |
3323 | return (void*)t; | |
3324 | # else | |
bce813aa | 3325 | # ifdef I_MACH_CTHREADS |
8b8b35ab | 3326 | return (void*)cthread_data(cthread_self()); |
bce813aa | 3327 | # else |
8b8b35ab JH |
3328 | return (void*)PTHREAD_GETSPECIFIC(PL_thr_key); |
3329 | # endif | |
c44d3fdb | 3330 | # endif |
ba869deb GS |
3331 | #else |
3332 | return (void*)NULL; | |
3333 | #endif | |
3334 | } | |
3335 | ||
3336 | void | |
3337 | Perl_set_context(void *t) | |
3338 | { | |
8772537c | 3339 | dVAR; |
7918f24d | 3340 | PERL_ARGS_ASSERT_SET_CONTEXT; |
3db8f154 | 3341 | #if defined(USE_ITHREADS) |
c44d3fdb GS |
3342 | # ifdef I_MACH_CTHREADS |
3343 | cthread_set_data(cthread_self(), t); | |
3344 | # else | |
ba869deb GS |
3345 | if (pthread_setspecific(PL_thr_key, t)) |
3346 | Perl_croak_nocontext("panic: pthread_setspecific"); | |
c44d3fdb | 3347 | # endif |
b464bac0 | 3348 | #else |
8772537c | 3349 | PERL_UNUSED_ARG(t); |
ba869deb GS |
3350 | #endif |
3351 | } | |
3352 | ||
3353 | #endif /* !PERL_GET_CONTEXT_DEFINED */ | |
491527d0 | 3354 | |
27da23d5 | 3355 | #if defined(PERL_GLOBAL_STRUCT) && !defined(PERL_GLOBAL_STRUCT_PRIVATE) |
22239a37 | 3356 | struct perl_vars * |
864dbfa3 | 3357 | Perl_GetVars(pTHX) |
22239a37 | 3358 | { |
533c011a | 3359 | return &PL_Vars; |
22239a37 | 3360 | } |
31fb1209 NIS |
3361 | #endif |
3362 | ||
1cb0ed9b | 3363 | char ** |
864dbfa3 | 3364 | Perl_get_op_names(pTHX) |
31fb1209 | 3365 | { |
96a5add6 AL |
3366 | PERL_UNUSED_CONTEXT; |
3367 | return (char **)PL_op_name; | |
31fb1209 NIS |
3368 | } |
3369 | ||
1cb0ed9b | 3370 | char ** |
864dbfa3 | 3371 | Perl_get_op_descs(pTHX) |
31fb1209 | 3372 | { |
96a5add6 AL |
3373 | PERL_UNUSED_CONTEXT; |
3374 | return (char **)PL_op_desc; | |
31fb1209 | 3375 | } |
9e6b2b00 | 3376 | |
e1ec3a88 | 3377 | const char * |
864dbfa3 | 3378 | Perl_get_no_modify(pTHX) |
9e6b2b00 | 3379 | { |
96a5add6 AL |
3380 | PERL_UNUSED_CONTEXT; |
3381 | return PL_no_modify; | |
9e6b2b00 GS |
3382 | } |
3383 | ||
3384 | U32 * | |
864dbfa3 | 3385 | Perl_get_opargs(pTHX) |
9e6b2b00 | 3386 | { |
96a5add6 AL |
3387 | PERL_UNUSED_CONTEXT; |
3388 | return (U32 *)PL_opargs; | |
9e6b2b00 | 3389 | } |
51aa15f3 | 3390 | |
0cb96387 GS |
3391 | PPADDR_t* |
3392 | Perl_get_ppaddr(pTHX) | |
3393 | { | |
96a5add6 AL |
3394 | dVAR; |
3395 | PERL_UNUSED_CONTEXT; | |
3396 | return (PPADDR_t*)PL_ppaddr; | |
0cb96387 GS |
3397 | } |
3398 | ||
a6c40364 GS |
3399 | #ifndef HAS_GETENV_LEN |
3400 | char * | |
bf4acbe4 | 3401 | Perl_getenv_len(pTHX_ const char *env_elem, unsigned long *len) |
a6c40364 | 3402 | { |
8772537c | 3403 | char * const env_trans = PerlEnv_getenv(env_elem); |
96a5add6 | 3404 | PERL_UNUSED_CONTEXT; |
7918f24d | 3405 | PERL_ARGS_ASSERT_GETENV_LEN; |
a6c40364 GS |
3406 | if (env_trans) |
3407 | *len = strlen(env_trans); | |
3408 | return env_trans; | |
f675dbe5 CB |
3409 | } |
3410 | #endif | |
3411 | ||
dc9e4912 GS |
3412 | |
3413 | MGVTBL* | |
864dbfa3 | 3414 | Perl_get_vtbl(pTHX_ int vtbl_id) |
dc9e4912 | 3415 | { |
7452cf6a | 3416 | const MGVTBL* result; |
96a5add6 | 3417 | PERL_UNUSED_CONTEXT; |
dc9e4912 GS |
3418 | |
3419 | switch(vtbl_id) { | |
3420 | case want_vtbl_sv: | |
3421 | result = &PL_vtbl_sv; | |
3422 | break; | |
3423 | case want_vtbl_env: | |
3424 | result = &PL_vtbl_env; | |
3425 | break; | |
3426 | case want_vtbl_envelem: | |
3427 | result = &PL_vtbl_envelem; | |
3428 | break; | |
3429 | case want_vtbl_sig: | |
3430 | result = &PL_vtbl_sig; | |
3431 | break; | |
3432 | case want_vtbl_sigelem: | |
3433 | result = &PL_vtbl_sigelem; | |
3434 | break; | |
3435 | case want_vtbl_pack: | |
3436 | result = &PL_vtbl_pack; | |
3437 | break; | |
3438 | case want_vtbl_packelem: | |
3439 | result = &PL_vtbl_packelem; | |
3440 | break; | |
3441 | case want_vtbl_dbline: | |
3442 | result = &PL_vtbl_dbline; | |
3443 | break; | |
3444 | case want_vtbl_isa: | |
3445 | result = &PL_vtbl_isa; | |
3446 | break; | |
3447 | case want_vtbl_isaelem: | |
3448 | result = &PL_vtbl_isaelem; | |
3449 | break; | |
3450 | case want_vtbl_arylen: | |
3451 | result = &PL_vtbl_arylen; | |
3452 | break; | |
dc9e4912 GS |
3453 | case want_vtbl_mglob: |
3454 | result = &PL_vtbl_mglob; | |
3455 | break; | |
3456 | case want_vtbl_nkeys: | |
3457 | result = &PL_vtbl_nkeys; | |
3458 | break; | |
3459 | case want_vtbl_taint: | |
3460 | result = &PL_vtbl_taint; | |
3461 | break; | |
3462 | case want_vtbl_substr: | |
3463 | result = &PL_vtbl_substr; | |
3464 | break; | |
3465 | case want_vtbl_vec: | |
3466 | result = &PL_vtbl_vec; | |
3467 | break; | |
3468 | case want_vtbl_pos: | |
3469 | result = &PL_vtbl_pos; | |
3470 | break; | |
3471 | case want_vtbl_bm: | |
3472 | result = &PL_vtbl_bm; | |
3473 | break; | |
3474 | case want_vtbl_fm: | |
3475 | result = &PL_vtbl_fm; | |
3476 | break; | |
3477 | case want_vtbl_uvar: | |
3478 | result = &PL_vtbl_uvar; | |
3479 | break; | |
dc9e4912 GS |
3480 | case want_vtbl_defelem: |
3481 | result = &PL_vtbl_defelem; | |
3482 | break; | |
3483 | case want_vtbl_regexp: | |
3484 | result = &PL_vtbl_regexp; | |
3485 | break; | |
3486 | case want_vtbl_regdata: | |
3487 | result = &PL_vtbl_regdata; | |
3488 | break; | |
3489 | case want_vtbl_regdatum: | |
3490 | result = &PL_vtbl_regdatum; | |
3491 | break; | |
3c90161d | 3492 | #ifdef USE_LOCALE_COLLATE |
dc9e4912 GS |
3493 | case want_vtbl_collxfrm: |
3494 | result = &PL_vtbl_collxfrm; | |
3495 | break; | |
3c90161d | 3496 | #endif |
dc9e4912 GS |
3497 | case want_vtbl_amagic: |
3498 | result = &PL_vtbl_amagic; | |
3499 | break; | |
3500 | case want_vtbl_amagicelem: | |
3501 | result = &PL_vtbl_amagicelem; | |
3502 | break; | |
810b8aa5 GS |
3503 | case want_vtbl_backref: |
3504 | result = &PL_vtbl_backref; | |
3505 | break; | |
7e8c5dac HS |
3506 | case want_vtbl_utf8: |
3507 | result = &PL_vtbl_utf8; | |
3508 | break; | |
7452cf6a | 3509 | default: |
4608196e | 3510 | result = NULL; |
7452cf6a | 3511 | break; |
dc9e4912 | 3512 | } |
27da23d5 | 3513 | return (MGVTBL*)result; |
dc9e4912 GS |
3514 | } |
3515 | ||
767df6a1 | 3516 | I32 |
864dbfa3 | 3517 | Perl_my_fflush_all(pTHX) |
767df6a1 | 3518 | { |
f800e14d | 3519 | #if defined(USE_PERLIO) || defined(FFLUSH_NULL) || defined(USE_SFIO) |
ce720889 | 3520 | return PerlIO_flush(NULL); |
767df6a1 | 3521 | #else |
8fbdfb7c | 3522 | # if defined(HAS__FWALK) |
f13a2bc0 | 3523 | extern int fflush(FILE *); |
74cac757 JH |
3524 | /* undocumented, unprototyped, but very useful BSDism */ |
3525 | extern void _fwalk(int (*)(FILE *)); | |
8fbdfb7c | 3526 | _fwalk(&fflush); |
74cac757 | 3527 | return 0; |
8fa7f367 | 3528 | # else |
8fbdfb7c | 3529 | # if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY) |
8fa7f367 | 3530 | long open_max = -1; |
8fbdfb7c | 3531 | # ifdef PERL_FFLUSH_ALL_FOPEN_MAX |
d2201af2 | 3532 | open_max = PERL_FFLUSH_ALL_FOPEN_MAX; |
8fbdfb7c | 3533 | # else |
8fa7f367 | 3534 | # if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX) |
767df6a1 | 3535 | open_max = sysconf(_SC_OPEN_MAX); |
8fa7f367 JH |
3536 | # else |
3537 | # ifdef FOPEN_MAX | |
74cac757 | 3538 | open_max = FOPEN_MAX; |
8fa7f367 JH |
3539 | # else |
3540 | # ifdef OPEN_MAX | |
74cac757 | 3541 | open_max = OPEN_MAX; |
8fa7f367 JH |
3542 | # else |
3543 | # ifdef _NFILE | |
d2201af2 | 3544 | open_max = _NFILE; |
8fa7f367 JH |
3545 | # endif |
3546 | # endif | |
74cac757 | 3547 | # endif |
767df6a1 JH |
3548 | # endif |
3549 | # endif | |
767df6a1 JH |
3550 | if (open_max > 0) { |
3551 | long i; | |
3552 | for (i = 0; i < open_max; i++) | |
d2201af2 AD |
3553 | if (STDIO_STREAM_ARRAY[i]._file >= 0 && |
3554 | STDIO_STREAM_ARRAY[i]._file < open_max && | |
3555 | STDIO_STREAM_ARRAY[i]._flag) | |
3556 | PerlIO_flush(&STDIO_STREAM_ARRAY[i]); | |
767df6a1 JH |
3557 | return 0; |
3558 | } | |
8fbdfb7c | 3559 | # endif |
93189314 | 3560 | SETERRNO(EBADF,RMS_IFI); |
767df6a1 | 3561 | return EOF; |
74cac757 | 3562 | # endif |
767df6a1 JH |
3563 | #endif |
3564 | } | |
097ee67d | 3565 | |
69282e91 | 3566 | void |
e1ec3a88 | 3567 | Perl_report_evil_fh(pTHX_ const GV *gv, const IO *io, I32 op) |
bc37a18f | 3568 | { |
b64e5050 | 3569 | const char * const name = gv && isGV(gv) ? GvENAME(gv) : NULL; |
66fc2fa5 | 3570 | |
4c80c0b2 | 3571 | if (op == OP_phoney_OUTPUT_ONLY || op == OP_phoney_INPUT_ONLY) { |
3aed30dc | 3572 | if (ckWARN(WARN_IO)) { |
10edeb5d JH |
3573 | const char * const direction = |
3574 | (const char *)((op == OP_phoney_INPUT_ONLY) ? "in" : "out"); | |
3aed30dc HS |
3575 | if (name && *name) |
3576 | Perl_warner(aTHX_ packWARN(WARN_IO), | |
3577 | "Filehandle %s opened only for %sput", | |
fd322ea4 | 3578 | name, direction); |
3aed30dc HS |
3579 | else |
3580 | Perl_warner(aTHX_ packWARN(WARN_IO), | |
fd322ea4 | 3581 | "Filehandle opened only for %sput", direction); |
3aed30dc | 3582 | } |
2dd78f96 JH |
3583 | } |
3584 | else { | |
e1ec3a88 | 3585 | const char *vile; |
3aed30dc HS |
3586 | I32 warn_type; |
3587 | ||
3588 | if (gv && io && IoTYPE(io) == IoTYPE_CLOSED) { | |
3589 | vile = "closed"; | |
3590 | warn_type = WARN_CLOSED; | |
3591 | } | |
3592 | else { | |
3593 | vile = "unopened"; | |
3594 | warn_type = WARN_UNOPENED; | |
3595 | } | |
3596 | ||
3597 | if (ckWARN(warn_type)) { | |
10edeb5d JH |
3598 | const char * const pars = |
3599 | (const char *)(OP_IS_FILETEST(op) ? "" : "()"); | |
f0a09b71 | 3600 | const char * const func = |
10edeb5d JH |
3601 | (const char *) |
3602 | (op == OP_READLINE ? "readline" : /* "<HANDLE>" not nice */ | |
3603 | op == OP_LEAVEWRITE ? "write" : /* "write exit" not nice */ | |
3604 | op < 0 ? "" : /* handle phoney cases */ | |
3605 | PL_op_desc[op]); | |
3606 | const char * const type = | |
3607 | (const char *) | |
3608 | (OP_IS_SOCKET(op) || | |
3609 | (gv && io && IoTYPE(io) == IoTYPE_SOCKET) ? | |
3610 | "socket" : "filehandle"); | |
3aed30dc HS |
3611 | if (name && *name) { |
3612 | Perl_warner(aTHX_ packWARN(warn_type), | |
3613 | "%s%s on %s %s %s", func, pars, vile, type, name); | |
3614 | if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP)) | |
3615 | Perl_warner( | |
3616 | aTHX_ packWARN(warn_type), | |
3617 | "\t(Are you trying to call %s%s on dirhandle %s?)\n", | |
3618 | func, pars, name | |
3619 | ); | |
3620 | } | |
3621 | else { | |
3622 | Perl_warner(aTHX_ packWARN(warn_type), | |
3623 | "%s%s on %s %s", func, pars, vile, type); | |
3624 | if (gv && io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP)) | |
3625 | Perl_warner( | |
3626 | aTHX_ packWARN(warn_type), | |
3627 | "\t(Are you trying to call %s%s on dirhandle?)\n", | |
3628 | func, pars | |
3629 | ); | |
3630 | } | |
3631 | } | |
bc37a18f | 3632 | } |
69282e91 | 3633 | } |
a926ef6b JH |
3634 | |
3635 | #ifdef EBCDIC | |
cbebf344 JH |
3636 | /* in ASCII order, not that it matters */ |
3637 | static const char controllablechars[] = "?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"; | |
3638 | ||
a926ef6b JH |
3639 | int |
3640 | Perl_ebcdic_control(pTHX_ int ch) | |
3641 | { | |
3aed30dc | 3642 | if (ch > 'a') { |
e1ec3a88 | 3643 | const char *ctlp; |
3aed30dc HS |
3644 | |
3645 | if (islower(ch)) | |
3646 | ch = toupper(ch); | |
3647 | ||
3648 | if ((ctlp = strchr(controllablechars, ch)) == 0) { | |
3649 | Perl_die(aTHX_ "unrecognised control character '%c'\n", ch); | |
a926ef6b | 3650 | } |
3aed30dc HS |
3651 | |
3652 | if (ctlp == controllablechars) | |
3653 | return('\177'); /* DEL */ | |
3654 | else | |
3655 | return((unsigned char)(ctlp - controllablechars - 1)); | |
3656 | } else { /* Want uncontrol */ | |
3657 | if (ch == '\177' || ch == -1) | |
3658 | return('?'); | |
3659 | else if (ch == '\157') | |
3660 | return('\177'); | |
3661 | else if (ch == '\174') | |
3662 | return('\000'); | |
3663 | else if (ch == '^') /* '\137' in 1047, '\260' in 819 */ | |
3664 | return('\036'); | |
3665 | else if (ch == '\155') | |
3666 | return('\037'); | |
3667 | else if (0 < ch && ch < (sizeof(controllablechars) - 1)) | |
3668 | return(controllablechars[ch+1]); | |
3669 | else | |
3670 | Perl_die(aTHX_ "invalid control request: '\\%03o'\n", ch & 0xFF); | |
3671 | } | |
a926ef6b JH |
3672 | } |
3673 | #endif | |
e72cf795 | 3674 | |
f6adc668 | 3675 | /* To workaround core dumps from the uninitialised tm_zone we get the |
e72cf795 JH |
3676 | * system to give us a reasonable struct to copy. This fix means that |
3677 | * strftime uses the tm_zone and tm_gmtoff values returned by | |
3678 | * localtime(time()). That should give the desired result most of the | |
3679 | * time. But probably not always! | |
3680 | * | |
f6adc668 JH |
3681 | * This does not address tzname aspects of NETaa14816. |
3682 | * | |
e72cf795 | 3683 | */ |
f6adc668 | 3684 | |
e72cf795 JH |
3685 | #ifdef HAS_GNULIBC |
3686 | # ifndef STRUCT_TM_HASZONE | |
3687 | # define STRUCT_TM_HASZONE | |
3688 | # endif | |
3689 | #endif | |
3690 | ||
f6adc668 JH |
3691 | #ifdef STRUCT_TM_HASZONE /* Backward compat */ |
3692 | # ifndef HAS_TM_TM_ZONE | |
3693 | # define HAS_TM_TM_ZONE | |
3694 | # endif | |
3695 | #endif | |
3696 | ||
e72cf795 | 3697 | void |
f1208910 | 3698 | Perl_init_tm(pTHX_ struct tm *ptm) /* see mktime, strftime and asctime */ |
e72cf795 | 3699 | { |
f6adc668 | 3700 | #ifdef HAS_TM_TM_ZONE |
e72cf795 | 3701 | Time_t now; |
1b6737cc | 3702 | const struct tm* my_tm; |
7918f24d | 3703 | PERL_ARGS_ASSERT_INIT_TM; |
e72cf795 | 3704 | (void)time(&now); |
82c57498 | 3705 | my_tm = localtime(&now); |
ca46b8ee SP |
3706 | if (my_tm) |
3707 | Copy(my_tm, ptm, 1, struct tm); | |
1b6737cc | 3708 | #else |
7918f24d | 3709 | PERL_ARGS_ASSERT_INIT_TM; |
1b6737cc | 3710 | PERL_UNUSED_ARG(ptm); |
e72cf795 JH |
3711 | #endif |
3712 | } | |
3713 | ||
3714 | /* | |
3715 | * mini_mktime - normalise struct tm values without the localtime() | |
3716 | * semantics (and overhead) of mktime(). | |
3717 | */ | |
3718 | void | |
f1208910 | 3719 | Perl_mini_mktime(pTHX_ struct tm *ptm) |
e72cf795 JH |
3720 | { |
3721 | int yearday; | |
3722 | int secs; | |
3723 | int month, mday, year, jday; | |
3724 | int odd_cent, odd_year; | |
96a5add6 | 3725 | PERL_UNUSED_CONTEXT; |
e72cf795 | 3726 | |
7918f24d NC |
3727 | PERL_ARGS_ASSERT_MINI_MKTIME; |
3728 | ||
e72cf795 JH |
3729 | #define DAYS_PER_YEAR 365 |
3730 | #define DAYS_PER_QYEAR (4*DAYS_PER_YEAR+1) | |
3731 | #define DAYS_PER_CENT (25*DAYS_PER_QYEAR-1) | |
3732 | #define DAYS_PER_QCENT (4*DAYS_PER_CENT+1) | |
3733 | #define SECS_PER_HOUR (60*60) | |
3734 | #define SECS_PER_DAY (24*SECS_PER_HOUR) | |
3735 | /* parentheses deliberately absent on these two, otherwise they don't work */ | |
3736 | #define MONTH_TO_DAYS 153/5 | |
3737 | #define DAYS_TO_MONTH 5/153 | |
3738 | /* offset to bias by March (month 4) 1st between month/mday & year finding */ | |
3739 | #define YEAR_ADJUST (4*MONTH_TO_DAYS+1) | |
3740 | /* as used here, the algorithm leaves Sunday as day 1 unless we adjust it */ | |
3741 | #define WEEKDAY_BIAS 6 /* (1+6)%7 makes Sunday 0 again */ | |
3742 | ||
3743 | /* | |
3744 | * Year/day algorithm notes: | |
3745 | * | |
3746 | * With a suitable offset for numeric value of the month, one can find | |
3747 | * an offset into the year by considering months to have 30.6 (153/5) days, | |
3748 | * using integer arithmetic (i.e., with truncation). To avoid too much | |
3749 | * messing about with leap days, we consider January and February to be | |
3750 | * the 13th and 14th month of the previous year. After that transformation, | |
3751 | * we need the month index we use to be high by 1 from 'normal human' usage, | |
3752 | * so the month index values we use run from 4 through 15. | |
3753 | * | |
3754 | * Given that, and the rules for the Gregorian calendar (leap years are those | |
3755 | * divisible by 4 unless also divisible by 100, when they must be divisible | |
3756 | * by 400 instead), we can simply calculate the number of days since some | |
3757 | * arbitrary 'beginning of time' by futzing with the (adjusted) year number, | |
3758 | * the days we derive from our month index, and adding in the day of the | |
3759 | * month. The value used here is not adjusted for the actual origin which | |
3760 | * it normally would use (1 January A.D. 1), since we're not exposing it. | |
3761 | * We're only building the value so we can turn around and get the | |
3762 | * normalised values for the year, month, day-of-month, and day-of-year. | |
3763 | * | |
3764 | * For going backward, we need to bias the value we're using so that we find | |
3765 | * the right year value. (Basically, we don't want the contribution of | |
3766 | * March 1st to the number to apply while deriving the year). Having done | |
3767 | * that, we 'count up' the contribution to the year number by accounting for | |
3768 | * full quadracenturies (400-year periods) with their extra leap days, plus | |
3769 | * the contribution from full centuries (to avoid counting in the lost leap | |
3770 | * days), plus the contribution from full quad-years (to count in the normal | |
3771 | * leap days), plus the leftover contribution from any non-leap years. | |
3772 | * At this point, if we were working with an actual leap day, we'll have 0 | |
3773 | * days left over. This is also true for March 1st, however. So, we have | |
3774 | * to special-case that result, and (earlier) keep track of the 'odd' | |
3775 | * century and year contributions. If we got 4 extra centuries in a qcent, | |
3776 | * or 4 extra years in a qyear, then it's a leap day and we call it 29 Feb. | |
3777 | * Otherwise, we add back in the earlier bias we removed (the 123 from | |
3778 | * figuring in March 1st), find the month index (integer division by 30.6), | |
3779 | * and the remainder is the day-of-month. We then have to convert back to | |
3780 | * 'real' months (including fixing January and February from being 14/15 in | |
3781 | * the previous year to being in the proper year). After that, to get | |
3782 | * tm_yday, we work with the normalised year and get a new yearday value for | |
3783 | * January 1st, which we subtract from the yearday value we had earlier, | |
3784 | * representing the date we've re-built. This is done from January 1 | |
3785 | * because tm_yday is 0-origin. | |
3786 | * | |
3787 | * Since POSIX time routines are only guaranteed to work for times since the | |
3788 | * UNIX epoch (00:00:00 1 Jan 1970 UTC), the fact that this algorithm | |
3789 | * applies Gregorian calendar rules even to dates before the 16th century | |
3790 | * doesn't bother me. Besides, you'd need cultural context for a given | |
3791 | * date to know whether it was Julian or Gregorian calendar, and that's | |
3792 | * outside the scope for this routine. Since we convert back based on the | |
3793 | * same rules we used to build the yearday, you'll only get strange results | |
3794 | * for input which needed normalising, or for the 'odd' century years which | |
3795 | * were leap years in the Julian calander but not in the Gregorian one. | |
3796 | * I can live with that. | |
3797 | * | |
3798 | * This algorithm also fails to handle years before A.D. 1 gracefully, but | |
3799 | * that's still outside the scope for POSIX time manipulation, so I don't | |
3800 | * care. | |
3801 | */ | |
3802 | ||
3803 | year = 1900 + ptm->tm_year; | |
3804 | month = ptm->tm_mon; | |
3805 | mday = ptm->tm_mday; | |
3806 | /* allow given yday with no month & mday to dominate the result */ | |
3807 | if (ptm->tm_yday >= 0 && mday <= 0 && month <= 0) { | |
3808 | month = 0; | |
3809 | mday = 0; | |
3810 | jday = 1 + ptm->tm_yday; | |
3811 | } | |
3812 | else { | |
3813 | jday = 0; | |
3814 | } | |
3815 | if (month >= 2) | |
3816 | month+=2; | |
3817 | else | |
3818 | month+=14, year--; | |
3819 | yearday = DAYS_PER_YEAR * year + year/4 - year/100 + year/400; | |
3820 | yearday += month*MONTH_TO_DAYS + mday + jday; | |
3821 | /* | |
3822 | * Note that we don't know when leap-seconds were or will be, | |
3823 | * so we have to trust the user if we get something which looks | |
3824 | * like a sensible leap-second. Wild values for seconds will | |
3825 | * be rationalised, however. | |
3826 | */ | |
3827 | if ((unsigned) ptm->tm_sec <= 60) { | |
3828 | secs = 0; | |
3829 | } | |
3830 | else { | |
3831 | secs = ptm->tm_sec; | |
3832 | ptm->tm_sec = 0; | |
3833 | } | |
3834 | secs += 60 * ptm->tm_min; | |
3835 | secs += SECS_PER_HOUR * ptm->tm_hour; | |
3836 | if (secs < 0) { | |
3837 | if (secs-(secs/SECS_PER_DAY*SECS_PER_DAY) < 0) { | |
3838 | /* got negative remainder, but need positive time */ | |
3839 | /* back off an extra day to compensate */ | |
3840 | yearday += (secs/SECS_PER_DAY)-1; | |
3841 | secs -= SECS_PER_DAY * (secs/SECS_PER_DAY - 1); | |
3842 | } | |
3843 | else { | |
3844 | yearday += (secs/SECS_PER_DAY); | |
3845 | secs -= SECS_PER_DAY * (secs/SECS_PER_DAY); | |
3846 | } | |
3847 | } | |
3848 | else if (secs >= SECS_PER_DAY) { | |
3849 | yearday += (secs/SECS_PER_DAY); | |
3850 | secs %= SECS_PER_DAY; | |
3851 | } | |
3852 | ptm->tm_hour = secs/SECS_PER_HOUR; | |
3853 | secs %= SECS_PER_HOUR; | |
3854 | ptm->tm_min = secs/60; | |
3855 | secs %= 60; | |
3856 | ptm->tm_sec += secs; | |
3857 | /* done with time of day effects */ | |
3858 | /* | |
3859 | * The algorithm for yearday has (so far) left it high by 428. | |
3860 | * To avoid mistaking a legitimate Feb 29 as Mar 1, we need to | |
3861 | * bias it by 123 while trying to figure out what year it | |
3862 | * really represents. Even with this tweak, the reverse | |
3863 | * translation fails for years before A.D. 0001. | |
3864 | * It would still fail for Feb 29, but we catch that one below. | |
3865 | */ | |
3866 | jday = yearday; /* save for later fixup vis-a-vis Jan 1 */ | |
3867 | yearday -= YEAR_ADJUST; | |
3868 | year = (yearday / DAYS_PER_QCENT) * 400; | |
3869 | yearday %= DAYS_PER_QCENT; | |
3870 | odd_cent = yearday / DAYS_PER_CENT; | |
3871 | year += odd_cent * 100; | |
3872 | yearday %= DAYS_PER_CENT; | |
3873 | year += (yearday / DAYS_PER_QYEAR) * 4; | |
3874 | yearday %= DAYS_PER_QYEAR; | |
3875 | odd_year = yearday / DAYS_PER_YEAR; | |
3876 | year += odd_year; | |
3877 | yearday %= DAYS_PER_YEAR; | |
3878 | if (!yearday && (odd_cent==4 || odd_year==4)) { /* catch Feb 29 */ | |
3879 | month = 1; | |
3880 | yearday = 29; | |
3881 | } | |
3882 | else { | |
3883 | yearday += YEAR_ADJUST; /* recover March 1st crock */ | |
3884 | month = yearday*DAYS_TO_MONTH; | |
3885 | yearday -= month*MONTH_TO_DAYS; | |
3886 | /* recover other leap-year adjustment */ | |
3887 | if (month > 13) { | |
3888 | month-=14; | |
3889 | year++; | |
3890 | } | |
3891 | else { | |
3892 | month-=2; | |
3893 | } | |
3894 | } | |
3895 | ptm->tm_year = year - 1900; | |
3896 | if (yearday) { | |
3897 | ptm->tm_mday = yearday; | |
3898 | ptm->tm_mon = month; | |
3899 | } | |
3900 | else { | |
3901 | ptm->tm_mday = 31; | |
3902 | ptm->tm_mon = month - 1; | |
3903 | } | |
3904 | /* re-build yearday based on Jan 1 to get tm_yday */ | |
3905 | year--; | |
3906 | yearday = year*DAYS_PER_YEAR + year/4 - year/100 + year/400; | |
3907 | yearday += 14*MONTH_TO_DAYS + 1; | |
3908 | ptm->tm_yday = jday - yearday; | |
3909 | /* fix tm_wday if not overridden by caller */ | |
3910 | if ((unsigned)ptm->tm_wday > 6) | |
3911 | ptm->tm_wday = (jday + WEEKDAY_BIAS) % 7; | |
3912 | } | |
b3c85772 JH |
3913 | |
3914 | char * | |
e1ec3a88 | 3915 | Perl_my_strftime(pTHX_ const char *fmt, int sec, int min, int hour, int mday, int mon, int year, int wday, int yday, int isdst) |
b3c85772 JH |
3916 | { |
3917 | #ifdef HAS_STRFTIME | |
3918 | char *buf; | |
3919 | int buflen; | |
3920 | struct tm mytm; | |
3921 | int len; | |
3922 | ||
7918f24d NC |
3923 | PERL_ARGS_ASSERT_MY_STRFTIME; |
3924 | ||
b3c85772 JH |
3925 | init_tm(&mytm); /* XXX workaround - see init_tm() above */ |
3926 | mytm.tm_sec = sec; | |
3927 | mytm.tm_min = min; | |
3928 | mytm.tm_hour = hour; | |
3929 | mytm.tm_mday = mday; | |
3930 | mytm.tm_mon = mon; | |
3931 | mytm.tm_year = year; | |
3932 | mytm.tm_wday = wday; | |
3933 | mytm.tm_yday = yday; | |
3934 | mytm.tm_isdst = isdst; | |
3935 | mini_mktime(&mytm); | |
c473feec SR |
3936 | /* use libc to get the values for tm_gmtoff and tm_zone [perl #18238] */ |
3937 | #if defined(HAS_MKTIME) && (defined(HAS_TM_TM_GMTOFF) || defined(HAS_TM_TM_ZONE)) | |
3938 | STMT_START { | |
3939 | struct tm mytm2; | |
3940 | mytm2 = mytm; | |
3941 | mktime(&mytm2); | |
3942 | #ifdef HAS_TM_TM_GMTOFF | |
3943 | mytm.tm_gmtoff = mytm2.tm_gmtoff; | |
3944 | #endif | |
3945 | #ifdef HAS_TM_TM_ZONE | |
3946 | mytm.tm_zone = mytm2.tm_zone; | |
3947 | #endif | |
3948 | } STMT_END; | |
3949 | #endif | |
b3c85772 | 3950 | buflen = 64; |
a02a5408 | 3951 | Newx(buf, buflen, char); |
b3c85772 JH |
3952 | len = strftime(buf, buflen, fmt, &mytm); |
3953 | /* | |
877f6a72 | 3954 | ** The following is needed to handle to the situation where |
b3c85772 JH |
3955 | ** tmpbuf overflows. Basically we want to allocate a buffer |
3956 | ** and try repeatedly. The reason why it is so complicated | |
3957 | ** is that getting a return value of 0 from strftime can indicate | |
3958 | ** one of the following: | |
3959 | ** 1. buffer overflowed, | |
3960 | ** 2. illegal conversion specifier, or | |
3961 | ** 3. the format string specifies nothing to be returned(not | |
3962 | ** an error). This could be because format is an empty string | |
3963 | ** or it specifies %p that yields an empty string in some locale. | |
3964 | ** If there is a better way to make it portable, go ahead by | |
3965 | ** all means. | |
3966 | */ | |
3967 | if ((len > 0 && len < buflen) || (len == 0 && *fmt == '\0')) | |
3968 | return buf; | |
3969 | else { | |
3970 | /* Possibly buf overflowed - try again with a bigger buf */ | |
e1ec3a88 | 3971 | const int fmtlen = strlen(fmt); |
7743c307 | 3972 | int bufsize = fmtlen + buflen; |
877f6a72 | 3973 | |
a02a5408 | 3974 | Newx(buf, bufsize, char); |
b3c85772 JH |
3975 | while (buf) { |
3976 | buflen = strftime(buf, bufsize, fmt, &mytm); | |
3977 | if (buflen > 0 && buflen < bufsize) | |
3978 | break; | |
3979 | /* heuristic to prevent out-of-memory errors */ | |
3980 | if (bufsize > 100*fmtlen) { | |
3981 | Safefree(buf); | |
3982 | buf = NULL; | |
3983 | break; | |
3984 | } | |
7743c307 SH |
3985 | bufsize *= 2; |
3986 | Renew(buf, bufsize, char); | |
b3c85772 JH |
3987 | } |
3988 | return buf; | |
3989 | } | |
3990 | #else | |
3991 | Perl_croak(aTHX_ "panic: no strftime"); | |
27da23d5 | 3992 | return NULL; |
b3c85772 JH |
3993 | #endif |
3994 | } | |
3995 | ||
877f6a72 NIS |
3996 | |
3997 | #define SV_CWD_RETURN_UNDEF \ | |
3998 | sv_setsv(sv, &PL_sv_undef); \ | |
3999 | return FALSE | |
4000 | ||
4001 | #define SV_CWD_ISDOT(dp) \ | |
4002 | (dp->d_name[0] == '.' && (dp->d_name[1] == '\0' || \ | |
3aed30dc | 4003 | (dp->d_name[1] == '.' && dp->d_name[2] == '\0'))) |
877f6a72 NIS |
4004 | |
4005 | /* | |
ccfc67b7 JH |
4006 | =head1 Miscellaneous Functions |
4007 | ||
89423764 | 4008 | =for apidoc getcwd_sv |
877f6a72 NIS |
4009 | |
4010 | Fill the sv with current working directory | |
4011 | ||
4012 | =cut | |
4013 | */ | |
4014 | ||
4015 | /* Originally written in Perl by John Bazik; rewritten in C by Ben Sugars. | |
4016 | * rewritten again by dougm, optimized for use with xs TARG, and to prefer | |
4017 | * getcwd(3) if available | |
4018 | * Comments from the orignal: | |
4019 | * This is a faster version of getcwd. It's also more dangerous | |
4020 | * because you might chdir out of a directory that you can't chdir | |
4021 | * back into. */ | |
4022 | ||
877f6a72 | 4023 | int |
89423764 | 4024 | Perl_getcwd_sv(pTHX_ register SV *sv) |
877f6a72 NIS |
4025 | { |
4026 | #ifndef PERL_MICRO | |
97aff369 | 4027 | dVAR; |
ea715489 JH |
4028 | #ifndef INCOMPLETE_TAINTS |
4029 | SvTAINTED_on(sv); | |
4030 | #endif | |
4031 | ||
7918f24d NC |
4032 | PERL_ARGS_ASSERT_GETCWD_SV; |
4033 | ||
8f95b30d JH |
4034 | #ifdef HAS_GETCWD |
4035 | { | |
60e110a8 DM |
4036 | char buf[MAXPATHLEN]; |
4037 | ||
3aed30dc | 4038 | /* Some getcwd()s automatically allocate a buffer of the given |
60e110a8 DM |
4039 | * size from the heap if they are given a NULL buffer pointer. |
4040 | * The problem is that this behaviour is not portable. */ | |
3aed30dc | 4041 | if (getcwd(buf, sizeof(buf) - 1)) { |
42d9b98d | 4042 | sv_setpv(sv, buf); |
3aed30dc HS |
4043 | return TRUE; |
4044 | } | |
4045 | else { | |
4046 | sv_setsv(sv, &PL_sv_undef); | |
4047 | return FALSE; | |
4048 | } | |
8f95b30d JH |
4049 | } |
4050 | ||
4051 | #else | |
4052 | ||
c623ac67 | 4053 | Stat_t statbuf; |
877f6a72 | 4054 | int orig_cdev, orig_cino, cdev, cino, odev, oino, tdev, tino; |
4373e329 | 4055 | int pathlen=0; |
877f6a72 | 4056 | Direntry_t *dp; |
877f6a72 | 4057 | |
862a34c6 | 4058 | SvUPGRADE(sv, SVt_PV); |
877f6a72 | 4059 | |
877f6a72 | 4060 | if (PerlLIO_lstat(".", &statbuf) < 0) { |
3aed30dc | 4061 | SV_CWD_RETURN_UNDEF; |
877f6a72 NIS |
4062 | } |
4063 | ||
4064 | orig_cdev = statbuf.st_dev; | |
4065 | orig_cino = statbuf.st_ino; | |
4066 | cdev = orig_cdev; | |
4067 | cino = orig_cino; | |
4068 | ||
4069 | for (;;) { | |
4373e329 | 4070 | DIR *dir; |
f56ed502 | 4071 | int namelen; |
3aed30dc HS |
4072 | odev = cdev; |
4073 | oino = cino; | |
4074 | ||
4075 | if (PerlDir_chdir("..") < 0) { | |
4076 | SV_CWD_RETURN_UNDEF; | |
4077 | } | |
4078 | if (PerlLIO_stat(".", &statbuf) < 0) { | |
4079 | SV_CWD_RETURN_UNDEF; | |
4080 | } | |
4081 | ||
4082 | cdev = statbuf.st_dev; | |
4083 | cino = statbuf.st_ino; | |
4084 | ||
4085 | if (odev == cdev && oino == cino) { | |
4086 | break; | |
4087 | } | |
4088 | if (!(dir = PerlDir_open("."))) { | |
4089 | SV_CWD_RETURN_UNDEF; | |
4090 | } | |
4091 | ||
4092 | while ((dp = PerlDir_read(dir)) != NULL) { | |
877f6a72 | 4093 | #ifdef DIRNAMLEN |
f56ed502 | 4094 | namelen = dp->d_namlen; |
877f6a72 | 4095 | #else |
f56ed502 | 4096 | namelen = strlen(dp->d_name); |
877f6a72 | 4097 | #endif |
3aed30dc HS |
4098 | /* skip . and .. */ |
4099 | if (SV_CWD_ISDOT(dp)) { | |
4100 | continue; | |
4101 | } | |
4102 | ||
4103 | if (PerlLIO_lstat(dp->d_name, &statbuf) < 0) { | |
4104 | SV_CWD_RETURN_UNDEF; | |
4105 | } | |
4106 | ||
4107 | tdev = statbuf.st_dev; | |
4108 | tino = statbuf.st_ino; | |
4109 | if (tino == oino && tdev == odev) { | |
4110 | break; | |
4111 | } | |
cb5953d6 JH |
4112 | } |
4113 | ||
3aed30dc HS |
4114 | if (!dp) { |
4115 | SV_CWD_RETURN_UNDEF; | |
4116 | } | |
4117 | ||
4118 | if (pathlen + namelen + 1 >= MAXPATHLEN) { | |
4119 | SV_CWD_RETURN_UNDEF; | |
4120 | } | |
877f6a72 | 4121 | |
3aed30dc HS |
4122 | SvGROW(sv, pathlen + namelen + 1); |
4123 | ||
4124 | if (pathlen) { | |
4125 | /* shift down */ | |
95a20fc0 | 4126 | Move(SvPVX_const(sv), SvPVX(sv) + namelen + 1, pathlen, char); |
3aed30dc | 4127 | } |
877f6a72 | 4128 | |
3aed30dc HS |
4129 | /* prepend current directory to the front */ |
4130 | *SvPVX(sv) = '/'; | |
4131 | Move(dp->d_name, SvPVX(sv)+1, namelen, char); | |
4132 | pathlen += (namelen + 1); | |
877f6a72 NIS |
4133 | |
4134 | #ifdef VOID_CLOSEDIR | |
3aed30dc | 4135 | PerlDir_close(dir); |
877f6a72 | 4136 | #else |
3aed30dc HS |
4137 | if (PerlDir_close(dir) < 0) { |
4138 | SV_CWD_RETURN_UNDEF; | |
4139 | } | |
877f6a72 NIS |
4140 | #endif |
4141 | } | |
4142 | ||
60e110a8 | 4143 | if (pathlen) { |
3aed30dc HS |
4144 | SvCUR_set(sv, pathlen); |
4145 | *SvEND(sv) = '\0'; | |
4146 | SvPOK_only(sv); | |
877f6a72 | 4147 | |
95a20fc0 | 4148 | if (PerlDir_chdir(SvPVX_const(sv)) < 0) { |
3aed30dc HS |
4149 | SV_CWD_RETURN_UNDEF; |
4150 | } | |
877f6a72 NIS |
4151 | } |
4152 | if (PerlLIO_stat(".", &statbuf) < 0) { | |
3aed30dc | 4153 | SV_CWD_RETURN_UNDEF; |
877f6a72 NIS |
4154 | } |
4155 | ||
4156 | cdev = statbuf.st_dev; | |
4157 | cino = statbuf.st_ino; | |
4158 | ||
4159 | if (cdev != orig_cdev || cino != orig_cino) { | |
3aed30dc HS |
4160 | Perl_croak(aTHX_ "Unstable directory path, " |
4161 | "current directory changed unexpectedly"); | |
877f6a72 | 4162 | } |
877f6a72 NIS |
4163 | |
4164 | return TRUE; | |
793b8d8e JH |
4165 | #endif |
4166 | ||
877f6a72 NIS |
4167 | #else |
4168 | return FALSE; | |
4169 | #endif | |
4170 | } | |
4171 | ||
c812d146 | 4172 | #define VERSION_MAX 0x7FFFFFFF |
f4758303 | 4173 | /* |
b0f01acb JP |
4174 | =for apidoc scan_version |
4175 | ||
4176 | Returns a pointer to the next character after the parsed | |
4177 | version string, as well as upgrading the passed in SV to | |
4178 | an RV. | |
4179 | ||
4180 | Function must be called with an already existing SV like | |
4181 | ||
137d6fc0 | 4182 | sv = newSV(0); |
abc25d8c | 4183 | s = scan_version(s, SV *sv, bool qv); |
b0f01acb JP |
4184 | |
4185 | Performs some preprocessing to the string to ensure that | |
4186 | it has the correct characteristics of a version. Flags the | |
4187 | object if it contains an underscore (which denotes this | |
abc25d8c | 4188 | is an alpha version). The boolean qv denotes that the version |
137d6fc0 JP |
4189 | should be interpreted as if it had multiple decimals, even if |
4190 | it doesn't. | |
b0f01acb JP |
4191 | |
4192 | =cut | |
4193 | */ | |
4194 | ||
9137345a | 4195 | const char * |
e1ec3a88 | 4196 | Perl_scan_version(pTHX_ const char *s, SV *rv, bool qv) |
b0f01acb | 4197 | { |
e0218a61 | 4198 | const char *start; |
9137345a JP |
4199 | const char *pos; |
4200 | const char *last; | |
4201 | int saw_period = 0; | |
cb5772bb | 4202 | int alpha = 0; |
9137345a | 4203 | int width = 3; |
c812d146 | 4204 | bool vinf = FALSE; |
7452cf6a AL |
4205 | AV * const av = newAV(); |
4206 | SV * const hv = newSVrv(rv, "version"); /* create an SV and upgrade the RV */ | |
7918f24d NC |
4207 | |
4208 | PERL_ARGS_ASSERT_SCAN_VERSION; | |
4209 | ||
9137345a | 4210 | (void)sv_upgrade(hv, SVt_PVHV); /* needs to be an HV type */ |
cb5772bb | 4211 | |
e0218a61 JP |
4212 | while (isSPACE(*s)) /* leading whitespace is OK */ |
4213 | s++; | |
4214 | ||
8cb289bd RGS |
4215 | start = last = s; |
4216 | ||
9137345a JP |
4217 | if (*s == 'v') { |
4218 | s++; /* get past 'v' */ | |
4219 | qv = 1; /* force quoted version processing */ | |
4220 | } | |
4221 | ||
8cb289bd | 4222 | pos = s; |
9137345a JP |
4223 | |
4224 | /* pre-scan the input string to check for decimals/underbars */ | |
f941e658 | 4225 | while ( *pos == '.' || *pos == '_' || *pos == ',' || isDIGIT(*pos) ) |
ad63d80f JP |
4226 | { |
4227 | if ( *pos == '.' ) | |
4228 | { | |
cb5772bb | 4229 | if ( alpha ) |
5f89c282 | 4230 | Perl_croak(aTHX_ "Invalid version format (underscores before decimal)"); |
ad63d80f | 4231 | saw_period++ ; |
9137345a | 4232 | last = pos; |
46314c13 | 4233 | } |
ad63d80f JP |
4234 | else if ( *pos == '_' ) |
4235 | { | |
cb5772bb | 4236 | if ( alpha ) |
5f89c282 | 4237 | Perl_croak(aTHX_ "Invalid version format (multiple underscores)"); |
cb5772bb | 4238 | alpha = 1; |
9137345a | 4239 | width = pos - last - 1; /* natural width of sub-version */ |
ad63d80f | 4240 | } |
f941e658 JP |
4241 | else if ( *pos == ',' && isDIGIT(pos[1]) ) |
4242 | { | |
4243 | saw_period++ ; | |
4244 | last = pos; | |
4245 | } | |
4246 | ||
ad63d80f JP |
4247 | pos++; |
4248 | } | |
ad63d80f | 4249 | |
34ba6322 SP |
4250 | if ( alpha && !saw_period ) |
4251 | Perl_croak(aTHX_ "Invalid version format (alpha without decimal)"); | |
4252 | ||
f34c6aaf JP |
4253 | if ( alpha && saw_period && width == 0 ) |
4254 | Perl_croak(aTHX_ "Invalid version format (misplaced _ in number)"); | |
4255 | ||
e0218a61 | 4256 | if ( saw_period > 1 ) |
137d6fc0 | 4257 | qv = 1; /* force quoted version processing */ |
9137345a | 4258 | |
c812d146 | 4259 | last = pos; |
9137345a JP |
4260 | pos = s; |
4261 | ||
4262 | if ( qv ) | |
ef8f7699 | 4263 | (void)hv_stores(MUTABLE_HV(hv), "qv", newSViv(qv)); |
cb5772bb | 4264 | if ( alpha ) |
ef8f7699 | 4265 | (void)hv_stores(MUTABLE_HV(hv), "alpha", newSViv(alpha)); |
9137345a | 4266 | if ( !qv && width < 3 ) |
ef8f7699 | 4267 | (void)hv_stores(MUTABLE_HV(hv), "width", newSViv(width)); |
9137345a | 4268 | |
ad63d80f | 4269 | while (isDIGIT(*pos)) |
46314c13 | 4270 | pos++; |
ad63d80f JP |
4271 | if (!isALPHA(*pos)) { |
4272 | I32 rev; | |
4273 | ||
ad63d80f JP |
4274 | for (;;) { |
4275 | rev = 0; | |
4276 | { | |
129318bd | 4277 | /* this is atoi() that delimits on underscores */ |
9137345a | 4278 | const char *end = pos; |
129318bd | 4279 | I32 mult = 1; |
c812d146 | 4280 | I32 orev; |
9137345a | 4281 | |
129318bd JP |
4282 | /* the following if() will only be true after the decimal |
4283 | * point of a version originally created with a bare | |
4284 | * floating point number, i.e. not quoted in any way | |
4285 | */ | |
e0218a61 | 4286 | if ( !qv && s > start && saw_period == 1 ) { |
c76df65e | 4287 | mult *= 100; |
129318bd | 4288 | while ( s < end ) { |
c812d146 | 4289 | orev = rev; |
129318bd JP |
4290 | rev += (*s - '0') * mult; |
4291 | mult /= 10; | |
c812d146 JP |
4292 | if ( (PERL_ABS(orev) > PERL_ABS(rev)) |
4293 | || (PERL_ABS(rev) > VERSION_MAX )) { | |
4294 | if(ckWARN(WARN_OVERFLOW)) | |
4295 | Perl_warner(aTHX_ packWARN(WARN_OVERFLOW), | |
4296 | "Integer overflow in version %d",VERSION_MAX); | |
4297 | s = end - 1; | |
4298 | rev = VERSION_MAX; | |
4299 | vinf = 1; | |
4300 | } | |
129318bd | 4301 | s++; |
9137345a JP |
4302 | if ( *s == '_' ) |
4303 | s++; | |
129318bd JP |
4304 | } |
4305 | } | |
4306 | else { | |
4307 | while (--end >= s) { | |
c812d146 | 4308 | orev = rev; |
129318bd JP |
4309 | rev += (*end - '0') * mult; |
4310 | mult *= 10; | |
c812d146 JP |
4311 | if ( (PERL_ABS(orev) > PERL_ABS(rev)) |
4312 | || (PERL_ABS(rev) > VERSION_MAX )) { | |
4313 | if(ckWARN(WARN_OVERFLOW)) | |
4314 | Perl_warner(aTHX_ packWARN(WARN_OVERFLOW), | |
4315 | "Integer overflow in version"); | |
4316 | end = s - 1; | |
4317 | rev = VERSION_MAX; | |
4318 | vinf = 1; | |
4319 | } | |
129318bd JP |
4320 | } |
4321 | } | |
4322 | } | |
9137345a | 4323 | |
129318bd | 4324 | /* Append revision */ |
9137345a | 4325 | av_push(av, newSViv(rev)); |
c812d146 JP |
4326 | if ( vinf ) { |
4327 | s = last; | |
4328 | break; | |
4329 | } | |
4330 | else if ( *pos == '.' ) | |
9137345a JP |
4331 | s = ++pos; |
4332 | else if ( *pos == '_' && isDIGIT(pos[1]) ) | |
ad63d80f | 4333 | s = ++pos; |
f941e658 JP |
4334 | else if ( *pos == ',' && isDIGIT(pos[1]) ) |
4335 | s = ++pos; | |
ad63d80f JP |
4336 | else if ( isDIGIT(*pos) ) |
4337 | s = pos; | |
b0f01acb | 4338 | else { |
ad63d80f JP |
4339 | s = pos; |
4340 | break; | |
4341 | } | |
9137345a JP |
4342 | if ( qv ) { |
4343 | while ( isDIGIT(*pos) ) | |
4344 | pos++; | |
4345 | } | |
4346 | else { | |
4347 | int digits = 0; | |
4348 | while ( ( isDIGIT(*pos) || *pos == '_' ) && digits < 3 ) { | |
4349 | if ( *pos != '_' ) | |
4350 | digits++; | |
4351 | pos++; | |
4352 | } | |
b0f01acb JP |
4353 | } |
4354 | } | |
4355 | } | |
9137345a JP |
4356 | if ( qv ) { /* quoted versions always get at least three terms*/ |
4357 | I32 len = av_len(av); | |
4edfc503 NC |
4358 | /* This for loop appears to trigger a compiler bug on OS X, as it |
4359 | loops infinitely. Yes, len is negative. No, it makes no sense. | |
4360 | Compiler in question is: | |
4361 | gcc version 3.3 20030304 (Apple Computer, Inc. build 1640) | |
4362 | for ( len = 2 - len; len > 0; len-- ) | |
502c6561 | 4363 | av_push(MUTABLE_AV(sv), newSViv(0)); |
4edfc503 NC |
4364 | */ |
4365 | len = 2 - len; | |
4366 | while (len-- > 0) | |
9137345a | 4367 | av_push(av, newSViv(0)); |
b9381830 | 4368 | } |
9137345a | 4369 | |
8cb289bd | 4370 | /* need to save off the current version string for later */ |
c812d146 JP |
4371 | if ( vinf ) { |
4372 | SV * orig = newSVpvn("v.Inf", sizeof("v.Inf")-1); | |
ef8f7699 NC |
4373 | (void)hv_stores(MUTABLE_HV(hv), "original", orig); |
4374 | (void)hv_stores(MUTABLE_HV(hv), "vinf", newSViv(1)); | |
c812d146 JP |
4375 | } |
4376 | else if ( s > start ) { | |
8cb289bd RGS |
4377 | SV * orig = newSVpvn(start,s-start); |
4378 | if ( qv && saw_period == 1 && *start != 'v' ) { | |
4379 | /* need to insert a v to be consistent */ | |
4380 | sv_insert(orig, 0, 0, "v", 1); | |
4381 | } | |
ef8f7699 | 4382 | (void)hv_stores(MUTABLE_HV(hv), "original", orig); |
8cb289bd RGS |
4383 | } |
4384 | else { | |
76f68e9b | 4385 | (void)hv_stores(MUTABLE_HV(hv), "original", newSVpvs("0")); |
9137345a | 4386 | av_push(av, newSViv(0)); |
8cb289bd RGS |
4387 | } |
4388 | ||
4389 | /* And finally, store the AV in the hash */ | |
daba3364 | 4390 | (void)hv_stores(MUTABLE_HV(hv), "version", newRV_noinc(MUTABLE_SV(av))); |
9137345a | 4391 | |
92dcf8ce JP |
4392 | /* fix RT#19517 - special case 'undef' as string */ |
4393 | if ( *s == 'u' && strEQ(s,"undef") ) { | |
4394 | s += 5; | |
4395 | } | |
4396 | ||
9137345a | 4397 | return s; |
b0f01acb JP |
4398 | } |
4399 | ||
4400 | /* | |
4401 | =for apidoc new_version | |
4402 | ||
4403 | Returns a new version object based on the passed in SV: | |
4404 | ||
4405 | SV *sv = new_version(SV *ver); | |
4406 | ||
4407 | Does not alter the passed in ver SV. See "upg_version" if you | |
4408 | want to upgrade the SV. | |
4409 | ||
4410 | =cut | |
4411 | */ | |
4412 | ||
4413 | SV * | |
4414 | Perl_new_version(pTHX_ SV *ver) | |
4415 | { | |
97aff369 | 4416 | dVAR; |
2d03de9c | 4417 | SV * const rv = newSV(0); |
7918f24d | 4418 | PERL_ARGS_ASSERT_NEW_VERSION; |
d7aa5382 JP |
4419 | if ( sv_derived_from(ver,"version") ) /* can just copy directly */ |
4420 | { | |
4421 | I32 key; | |
53c1dcc0 | 4422 | AV * const av = newAV(); |
9137345a JP |
4423 | AV *sav; |
4424 | /* This will get reblessed later if a derived class*/ | |
e0218a61 | 4425 | SV * const hv = newSVrv(rv, "version"); |
9137345a JP |
4426 | (void)sv_upgrade(hv, SVt_PVHV); /* needs to be an HV type */ |
4427 | ||
4428 | if ( SvROK(ver) ) | |
4429 | ver = SvRV(ver); | |
4430 | ||
4431 | /* Begin copying all of the elements */ | |
ef8f7699 NC |
4432 | if ( hv_exists(MUTABLE_HV(ver), "qv", 2) ) |
4433 | (void)hv_stores(MUTABLE_HV(hv), "qv", newSViv(1)); | |
9137345a | 4434 | |
ef8f7699 NC |
4435 | if ( hv_exists(MUTABLE_HV(ver), "alpha", 5) ) |
4436 | (void)hv_stores(MUTABLE_HV(hv), "alpha", newSViv(1)); | |
9137345a | 4437 | |
ef8f7699 | 4438 | if ( hv_exists(MUTABLE_HV(ver), "width", 5 ) ) |
d7aa5382 | 4439 | { |
ef8f7699 NC |
4440 | const I32 width = SvIV(*hv_fetchs(MUTABLE_HV(ver), "width", FALSE)); |
4441 | (void)hv_stores(MUTABLE_HV(hv), "width", newSViv(width)); | |
d7aa5382 | 4442 | } |
9137345a | 4443 | |
ef8f7699 | 4444 | if ( hv_exists(MUTABLE_HV(ver), "original", 8 ) ) |
8cb289bd | 4445 | { |
ef8f7699 NC |
4446 | SV * pv = *hv_fetchs(MUTABLE_HV(ver), "original", FALSE); |
4447 | (void)hv_stores(MUTABLE_HV(hv), "original", newSVsv(pv)); | |
8cb289bd RGS |
4448 | } |
4449 | ||
502c6561 | 4450 | sav = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(ver), "version", FALSE))); |
9137345a JP |
4451 | /* This will get reblessed later if a derived class*/ |
4452 | for ( key = 0; key <= av_len(sav); key++ ) | |
4453 | { | |
4454 | const I32 rev = SvIV(*av_fetch(sav, key, FALSE)); | |
4455 | av_push(av, newSViv(rev)); | |
4456 | } | |
4457 | ||
daba3364 | 4458 | (void)hv_stores(MUTABLE_HV(hv), "version", newRV_noinc(MUTABLE_SV(av))); |
d7aa5382 JP |
4459 | return rv; |
4460 | } | |
ad63d80f | 4461 | #ifdef SvVOK |
4f2da183 | 4462 | { |
3c21775b | 4463 | const MAGIC* const mg = SvVSTRING_mg(ver); |
4f2da183 NC |
4464 | if ( mg ) { /* already a v-string */ |
4465 | const STRLEN len = mg->mg_len; | |
4466 | char * const version = savepvn( (const char*)mg->mg_ptr, len); | |
4467 | sv_setpvn(rv,version,len); | |
8cb289bd RGS |
4468 | /* this is for consistency with the pure Perl class */ |
4469 | if ( *version != 'v' ) | |
4470 | sv_insert(rv, 0, 0, "v", 1); | |
4f2da183 NC |
4471 | Safefree(version); |
4472 | } | |
4473 | else { | |
ad63d80f | 4474 | #endif |
4f2da183 | 4475 | sv_setsv(rv,ver); /* make a duplicate */ |
137d6fc0 | 4476 | #ifdef SvVOK |
4f2da183 | 4477 | } |
26ec6fc3 | 4478 | } |
137d6fc0 | 4479 | #endif |
ac0e6a2f | 4480 | return upg_version(rv, FALSE); |
b0f01acb JP |
4481 | } |
4482 | ||
4483 | /* | |
4484 | =for apidoc upg_version | |
4485 | ||
4486 | In-place upgrade of the supplied SV to a version object. | |
4487 | ||
ac0e6a2f | 4488 | SV *sv = upg_version(SV *sv, bool qv); |
b0f01acb | 4489 | |
ac0e6a2f RGS |
4490 | Returns a pointer to the upgraded SV. Set the boolean qv if you want |
4491 | to force this SV to be interpreted as an "extended" version. | |
b0f01acb JP |
4492 | |
4493 | =cut | |
4494 | */ | |
4495 | ||
4496 | SV * | |
ac0e6a2f | 4497 | Perl_upg_version(pTHX_ SV *ver, bool qv) |
b0f01acb | 4498 | { |
cd57dc11 | 4499 | const char *version, *s; |
4f2da183 NC |
4500 | #ifdef SvVOK |
4501 | const MAGIC *mg; | |
4502 | #endif | |
137d6fc0 | 4503 | |
7918f24d NC |
4504 | PERL_ARGS_ASSERT_UPG_VERSION; |
4505 | ||
ac0e6a2f | 4506 | if ( SvNOK(ver) && !( SvPOK(ver) && sv_len(ver) == 3 ) ) |
137d6fc0 | 4507 | { |
ac0e6a2f | 4508 | /* may get too much accuracy */ |
137d6fc0 | 4509 | char tbuf[64]; |
b5b5a8f0 RGS |
4510 | #ifdef USE_LOCALE_NUMERIC |
4511 | char *loc = setlocale(LC_NUMERIC, "C"); | |
4512 | #endif | |
63e3af20 | 4513 | STRLEN len = my_snprintf(tbuf, sizeof(tbuf), "%.9"NVff, SvNVX(ver)); |
b5b5a8f0 RGS |
4514 | #ifdef USE_LOCALE_NUMERIC |
4515 | setlocale(LC_NUMERIC, loc); | |
4516 | #endif | |
c8a14fb6 | 4517 | while (tbuf[len-1] == '0' && len > 0) len--; |
8cb289bd | 4518 | if ( tbuf[len-1] == '.' ) len--; /* eat the trailing decimal */ |
86c11942 | 4519 | version = savepvn(tbuf, len); |
137d6fc0 | 4520 | } |
ad63d80f | 4521 | #ifdef SvVOK |
666cce26 | 4522 | else if ( (mg = SvVSTRING_mg(ver)) ) { /* already a v-string */ |
ad63d80f | 4523 | version = savepvn( (const char*)mg->mg_ptr,mg->mg_len ); |
137d6fc0 | 4524 | qv = 1; |
b0f01acb | 4525 | } |
ad63d80f | 4526 | #endif |
137d6fc0 JP |
4527 | else /* must be a string or something like a string */ |
4528 | { | |
ac0e6a2f RGS |
4529 | STRLEN len; |
4530 | version = savepv(SvPV(ver,len)); | |
4531 | #ifndef SvVOK | |
4532 | # if PERL_VERSION > 5 | |
4533 | /* This will only be executed for 5.6.0 - 5.8.0 inclusive */ | |
4534 | if ( len == 3 && !instr(version,".") && !instr(version,"_") ) { | |
4535 | /* may be a v-string */ | |
4536 | SV * const nsv = sv_newmortal(); | |
4537 | const char *nver; | |
4538 | const char *pos; | |
4539 | int saw_period = 0; | |
8cb289bd | 4540 | sv_setpvf(nsv,"v%vd",ver); |
ac0e6a2f RGS |
4541 | pos = nver = savepv(SvPV_nolen(nsv)); |
4542 | ||
4543 | /* scan the resulting formatted string */ | |
8cb289bd | 4544 | pos++; /* skip the leading 'v' */ |
ac0e6a2f RGS |
4545 | while ( *pos == '.' || isDIGIT(*pos) ) { |
4546 | if ( *pos == '.' ) | |
4547 | saw_period++ ; | |
4548 | pos++; | |
4549 | } | |
4550 | ||
4551 | /* is definitely a v-string */ | |
4552 | if ( saw_period == 2 ) { | |
4553 | Safefree(version); | |
4554 | version = nver; | |
4555 | } | |
4556 | } | |
4557 | # endif | |
4558 | #endif | |
137d6fc0 | 4559 | } |
92dcf8ce | 4560 | |
cd57dc11 | 4561 | s = scan_version(version, ver, qv); |
808ee47e | 4562 | if ( *s != '\0' ) |
92dcf8ce | 4563 | if(ckWARN(WARN_MISC)) |
808ee47e | 4564 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
92dcf8ce JP |
4565 | "Version string '%s' contains invalid data; " |
4566 | "ignoring: '%s'", version, s); | |
137d6fc0 | 4567 | Safefree(version); |
ad63d80f | 4568 | return ver; |
b0f01acb JP |
4569 | } |
4570 | ||
e0218a61 JP |
4571 | /* |
4572 | =for apidoc vverify | |
4573 | ||
4574 | Validates that the SV contains a valid version object. | |
4575 | ||
4576 | bool vverify(SV *vobj); | |
4577 | ||
4578 | Note that it only confirms the bare minimum structure (so as not to get | |
4579 | confused by derived classes which may contain additional hash entries): | |
4580 | ||
4581 | =over 4 | |
4582 | ||
cb5772bb | 4583 | =item * The SV contains a [reference to a] hash |
e0218a61 JP |
4584 | |
4585 | =item * The hash contains a "version" key | |
4586 | ||
cb5772bb | 4587 | =item * The "version" key has [a reference to] an AV as its value |
e0218a61 JP |
4588 | |
4589 | =back | |
4590 | ||
4591 | =cut | |
4592 | */ | |
4593 | ||
4594 | bool | |
4595 | Perl_vverify(pTHX_ SV *vs) | |
4596 | { | |
4597 | SV *sv; | |
7918f24d NC |
4598 | |
4599 | PERL_ARGS_ASSERT_VVERIFY; | |
4600 | ||
e0218a61 JP |
4601 | if ( SvROK(vs) ) |
4602 | vs = SvRV(vs); | |
4603 | ||
4604 | /* see if the appropriate elements exist */ | |
4605 | if ( SvTYPE(vs) == SVt_PVHV | |
ef8f7699 NC |
4606 | && hv_exists(MUTABLE_HV(vs), "version", 7) |
4607 | && (sv = SvRV(*hv_fetchs(MUTABLE_HV(vs), "version", FALSE))) | |
e0218a61 JP |
4608 | && SvTYPE(sv) == SVt_PVAV ) |
4609 | return TRUE; | |
4610 | else | |
4611 | return FALSE; | |
4612 | } | |
b0f01acb JP |
4613 | |
4614 | /* | |
4615 | =for apidoc vnumify | |
4616 | ||
ad63d80f JP |
4617 | Accepts a version object and returns the normalized floating |
4618 | point representation. Call like: | |
b0f01acb | 4619 | |
ad63d80f | 4620 | sv = vnumify(rv); |
b0f01acb | 4621 | |
ad63d80f JP |
4622 | NOTE: you can pass either the object directly or the SV |
4623 | contained within the RV. | |
b0f01acb JP |
4624 | |
4625 | =cut | |
4626 | */ | |
4627 | ||
4628 | SV * | |
ad63d80f | 4629 | Perl_vnumify(pTHX_ SV *vs) |
b0f01acb | 4630 | { |
ad63d80f | 4631 | I32 i, len, digit; |
9137345a JP |
4632 | int width; |
4633 | bool alpha = FALSE; | |
53c1dcc0 | 4634 | SV * const sv = newSV(0); |
9137345a | 4635 | AV *av; |
7918f24d NC |
4636 | |
4637 | PERL_ARGS_ASSERT_VNUMIFY; | |
4638 | ||
ad63d80f JP |
4639 | if ( SvROK(vs) ) |
4640 | vs = SvRV(vs); | |
9137345a | 4641 | |
e0218a61 JP |
4642 | if ( !vverify(vs) ) |
4643 | Perl_croak(aTHX_ "Invalid version object"); | |
4644 | ||
9137345a | 4645 | /* see if various flags exist */ |
ef8f7699 | 4646 | if ( hv_exists(MUTABLE_HV(vs), "alpha", 5 ) ) |
9137345a | 4647 | alpha = TRUE; |
ef8f7699 NC |
4648 | if ( hv_exists(MUTABLE_HV(vs), "width", 5 ) ) |
4649 | width = SvIV(*hv_fetchs(MUTABLE_HV(vs), "width", FALSE)); | |
9137345a JP |
4650 | else |
4651 | width = 3; | |
4652 | ||
4653 | ||
4654 | /* attempt to retrieve the version array */ | |
502c6561 | 4655 | if ( !(av = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(vs), "version", FALSE))) ) ) { |
396482e1 | 4656 | sv_catpvs(sv,"0"); |
9137345a JP |
4657 | return sv; |
4658 | } | |
4659 | ||
4660 | len = av_len(av); | |
46314c13 JP |
4661 | if ( len == -1 ) |
4662 | { | |
396482e1 | 4663 | sv_catpvs(sv,"0"); |
46314c13 JP |
4664 | return sv; |
4665 | } | |
9137345a JP |
4666 | |
4667 | digit = SvIV(*av_fetch(av, 0, 0)); | |
261fcdab | 4668 | Perl_sv_setpvf(aTHX_ sv, "%d.", (int)PERL_ABS(digit)); |
13f8f398 | 4669 | for ( i = 1 ; i < len ; i++ ) |
b0f01acb | 4670 | { |
9137345a JP |
4671 | digit = SvIV(*av_fetch(av, i, 0)); |
4672 | if ( width < 3 ) { | |
43eaf59d | 4673 | const int denom = (width == 2 ? 10 : 100); |
53c1dcc0 | 4674 | const div_t term = div((int)PERL_ABS(digit),denom); |
261fcdab | 4675 | Perl_sv_catpvf(aTHX_ sv, "%0*d_%d", width, term.quot, term.rem); |
9137345a JP |
4676 | } |
4677 | else { | |
261fcdab | 4678 | Perl_sv_catpvf(aTHX_ sv, "%0*d", width, (int)digit); |
9137345a | 4679 | } |
b0f01acb | 4680 | } |
13f8f398 JP |
4681 | |
4682 | if ( len > 0 ) | |
4683 | { | |
9137345a JP |
4684 | digit = SvIV(*av_fetch(av, len, 0)); |
4685 | if ( alpha && width == 3 ) /* alpha version */ | |
396482e1 | 4686 | sv_catpvs(sv,"_"); |
261fcdab | 4687 | Perl_sv_catpvf(aTHX_ sv, "%0*d", width, (int)digit); |
13f8f398 | 4688 | } |
e0218a61 | 4689 | else /* len == 0 */ |
13f8f398 | 4690 | { |
396482e1 | 4691 | sv_catpvs(sv, "000"); |
13f8f398 | 4692 | } |
b0f01acb JP |
4693 | return sv; |
4694 | } | |
4695 | ||
4696 | /* | |
b9381830 | 4697 | =for apidoc vnormal |
b0f01acb | 4698 | |
ad63d80f JP |
4699 | Accepts a version object and returns the normalized string |
4700 | representation. Call like: | |
b0f01acb | 4701 | |
b9381830 | 4702 | sv = vnormal(rv); |
b0f01acb | 4703 | |
ad63d80f JP |
4704 | NOTE: you can pass either the object directly or the SV |
4705 | contained within the RV. | |
b0f01acb JP |
4706 | |
4707 | =cut | |
4708 | */ | |
4709 | ||
4710 | SV * | |
b9381830 | 4711 | Perl_vnormal(pTHX_ SV *vs) |
b0f01acb | 4712 | { |
ad63d80f | 4713 | I32 i, len, digit; |
9137345a | 4714 | bool alpha = FALSE; |
2d03de9c | 4715 | SV * const sv = newSV(0); |
9137345a | 4716 | AV *av; |
7918f24d NC |
4717 | |
4718 | PERL_ARGS_ASSERT_VNORMAL; | |
4719 | ||
ad63d80f JP |
4720 | if ( SvROK(vs) ) |
4721 | vs = SvRV(vs); | |
9137345a | 4722 | |
e0218a61 JP |
4723 | if ( !vverify(vs) ) |
4724 | Perl_croak(aTHX_ "Invalid version object"); | |
4725 | ||
ef8f7699 | 4726 | if ( hv_exists(MUTABLE_HV(vs), "alpha", 5 ) ) |
9137345a | 4727 | alpha = TRUE; |
502c6561 | 4728 | av = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(vs), "version", FALSE))); |
9137345a JP |
4729 | |
4730 | len = av_len(av); | |
e0218a61 JP |
4731 | if ( len == -1 ) |
4732 | { | |
396482e1 | 4733 | sv_catpvs(sv,""); |
46314c13 JP |
4734 | return sv; |
4735 | } | |
9137345a | 4736 | digit = SvIV(*av_fetch(av, 0, 0)); |
261fcdab | 4737 | Perl_sv_setpvf(aTHX_ sv, "v%"IVdf, (IV)digit); |
cb5772bb | 4738 | for ( i = 1 ; i < len ; i++ ) { |
9137345a | 4739 | digit = SvIV(*av_fetch(av, i, 0)); |
261fcdab | 4740 | Perl_sv_catpvf(aTHX_ sv, ".%"IVdf, (IV)digit); |
9137345a JP |
4741 | } |
4742 | ||
e0218a61 JP |
4743 | if ( len > 0 ) |
4744 | { | |
9137345a JP |
4745 | /* handle last digit specially */ |
4746 | digit = SvIV(*av_fetch(av, len, 0)); | |
4747 | if ( alpha ) | |
261fcdab | 4748 | Perl_sv_catpvf(aTHX_ sv, "_%"IVdf, (IV)digit); |
ad63d80f | 4749 | else |
261fcdab | 4750 | Perl_sv_catpvf(aTHX_ sv, ".%"IVdf, (IV)digit); |
b0f01acb | 4751 | } |
9137345a | 4752 | |
137d6fc0 JP |
4753 | if ( len <= 2 ) { /* short version, must be at least three */ |
4754 | for ( len = 2 - len; len != 0; len-- ) | |
396482e1 | 4755 | sv_catpvs(sv,".0"); |
137d6fc0 | 4756 | } |
b0f01acb | 4757 | return sv; |
9137345a | 4758 | } |
b0f01acb | 4759 | |
ad63d80f | 4760 | /* |
b9381830 JP |
4761 | =for apidoc vstringify |
4762 | ||
4763 | In order to maintain maximum compatibility with earlier versions | |
4764 | of Perl, this function will return either the floating point | |
4765 | notation or the multiple dotted notation, depending on whether | |
4766 | the original version contained 1 or more dots, respectively | |
4767 | ||
4768 | =cut | |
4769 | */ | |
4770 | ||
4771 | SV * | |
4772 | Perl_vstringify(pTHX_ SV *vs) | |
4773 | { | |
7918f24d NC |
4774 | PERL_ARGS_ASSERT_VSTRINGIFY; |
4775 | ||
b9381830 JP |
4776 | if ( SvROK(vs) ) |
4777 | vs = SvRV(vs); | |
219bf418 | 4778 | |
e0218a61 JP |
4779 | if ( !vverify(vs) ) |
4780 | Perl_croak(aTHX_ "Invalid version object"); | |
4781 | ||
ef8f7699 | 4782 | if (hv_exists(MUTABLE_HV(vs), "original", sizeof("original") - 1)) { |
219bf418 | 4783 | SV *pv; |
ef8f7699 | 4784 | pv = *hv_fetchs(MUTABLE_HV(vs), "original", FALSE); |
219bf418 RGS |
4785 | if ( SvPOK(pv) ) |
4786 | return newSVsv(pv); | |
4787 | else | |
4788 | return &PL_sv_undef; | |
4789 | } | |
4790 | else { | |
ef8f7699 | 4791 | if ( hv_exists(MUTABLE_HV(vs), "qv", 2) ) |
219bf418 RGS |
4792 | return vnormal(vs); |
4793 | else | |
4794 | return vnumify(vs); | |
4795 | } | |
b9381830 JP |
4796 | } |
4797 | ||
4798 | /* | |
ad63d80f JP |
4799 | =for apidoc vcmp |
4800 | ||
4801 | Version object aware cmp. Both operands must already have been | |
4802 | converted into version objects. | |
4803 | ||
4804 | =cut | |
4805 | */ | |
4806 | ||
4807 | int | |
9137345a | 4808 | Perl_vcmp(pTHX_ SV *lhv, SV *rhv) |
ad63d80f JP |
4809 | { |
4810 | I32 i,l,m,r,retval; | |
9137345a JP |
4811 | bool lalpha = FALSE; |
4812 | bool ralpha = FALSE; | |
4813 | I32 left = 0; | |
4814 | I32 right = 0; | |
4815 | AV *lav, *rav; | |
7918f24d NC |
4816 | |
4817 | PERL_ARGS_ASSERT_VCMP; | |
4818 | ||
9137345a JP |
4819 | if ( SvROK(lhv) ) |
4820 | lhv = SvRV(lhv); | |
4821 | if ( SvROK(rhv) ) | |
4822 | rhv = SvRV(rhv); | |
4823 | ||
e0218a61 JP |
4824 | if ( !vverify(lhv) ) |
4825 | Perl_croak(aTHX_ "Invalid version object"); | |
4826 | ||
4827 | if ( !vverify(rhv) ) | |
4828 | Perl_croak(aTHX_ "Invalid version object"); | |
4829 | ||
9137345a | 4830 | /* get the left hand term */ |
502c6561 | 4831 | lav = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(lhv), "version", FALSE))); |
ef8f7699 | 4832 | if ( hv_exists(MUTABLE_HV(lhv), "alpha", 5 ) ) |
9137345a JP |
4833 | lalpha = TRUE; |
4834 | ||
4835 | /* and the right hand term */ | |
502c6561 | 4836 | rav = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(rhv), "version", FALSE))); |
ef8f7699 | 4837 | if ( hv_exists(MUTABLE_HV(rhv), "alpha", 5 ) ) |
9137345a JP |
4838 | ralpha = TRUE; |
4839 | ||
4840 | l = av_len(lav); | |
4841 | r = av_len(rav); | |
ad63d80f JP |
4842 | m = l < r ? l : r; |
4843 | retval = 0; | |
4844 | i = 0; | |
4845 | while ( i <= m && retval == 0 ) | |
4846 | { | |
9137345a JP |
4847 | left = SvIV(*av_fetch(lav,i,0)); |
4848 | right = SvIV(*av_fetch(rav,i,0)); | |
4849 | if ( left < right ) | |
ad63d80f | 4850 | retval = -1; |
9137345a | 4851 | if ( left > right ) |
ad63d80f JP |
4852 | retval = +1; |
4853 | i++; | |
4854 | } | |
4855 | ||
9137345a JP |
4856 | /* tiebreaker for alpha with identical terms */ |
4857 | if ( retval == 0 && l == r && left == right && ( lalpha || ralpha ) ) | |
4858 | { | |
4859 | if ( lalpha && !ralpha ) | |
4860 | { | |
4861 | retval = -1; | |
4862 | } | |
4863 | else if ( ralpha && !lalpha) | |
4864 | { | |
4865 | retval = +1; | |
4866 | } | |
4867 | } | |
4868 | ||
137d6fc0 | 4869 | if ( l != r && retval == 0 ) /* possible match except for trailing 0's */ |
129318bd | 4870 | { |
137d6fc0 | 4871 | if ( l < r ) |
129318bd | 4872 | { |
137d6fc0 JP |
4873 | while ( i <= r && retval == 0 ) |
4874 | { | |
9137345a | 4875 | if ( SvIV(*av_fetch(rav,i,0)) != 0 ) |
137d6fc0 JP |
4876 | retval = -1; /* not a match after all */ |
4877 | i++; | |
4878 | } | |
4879 | } | |
4880 | else | |
4881 | { | |
4882 | while ( i <= l && retval == 0 ) | |
4883 | { | |
9137345a | 4884 | if ( SvIV(*av_fetch(lav,i,0)) != 0 ) |
137d6fc0 JP |
4885 | retval = +1; /* not a match after all */ |
4886 | i++; | |
4887 | } | |
129318bd JP |
4888 | } |
4889 | } | |
ad63d80f JP |
4890 | return retval; |
4891 | } | |
4892 | ||
c95c94b1 | 4893 | #if !defined(HAS_SOCKETPAIR) && defined(HAS_SOCKET) && defined(AF_INET) && defined(PF_INET) && defined(SOCK_DGRAM) && defined(HAS_SELECT) |
2bc69dc4 NIS |
4894 | # define EMULATE_SOCKETPAIR_UDP |
4895 | #endif | |
4896 | ||
4897 | #ifdef EMULATE_SOCKETPAIR_UDP | |
02fc2eee NC |
4898 | static int |
4899 | S_socketpair_udp (int fd[2]) { | |
e10bb1e9 | 4900 | dTHX; |
02fc2eee NC |
4901 | /* Fake a datagram socketpair using UDP to localhost. */ |
4902 | int sockets[2] = {-1, -1}; | |
4903 | struct sockaddr_in addresses[2]; | |
4904 | int i; | |
3aed30dc | 4905 | Sock_size_t size = sizeof(struct sockaddr_in); |
ae92b34e | 4906 | unsigned short port; |
02fc2eee NC |
4907 | int got; |
4908 | ||
3aed30dc | 4909 | memset(&addresses, 0, sizeof(addresses)); |
02fc2eee NC |
4910 | i = 1; |
4911 | do { | |
3aed30dc HS |
4912 | sockets[i] = PerlSock_socket(AF_INET, SOCK_DGRAM, PF_INET); |
4913 | if (sockets[i] == -1) | |
4914 | goto tidy_up_and_fail; | |
4915 | ||
4916 | addresses[i].sin_family = AF_INET; | |
4917 | addresses[i].sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
4918 | addresses[i].sin_port = 0; /* kernel choses port. */ | |
4919 | if (PerlSock_bind(sockets[i], (struct sockaddr *) &addresses[i], | |
4920 | sizeof(struct sockaddr_in)) == -1) | |
4921 | goto tidy_up_and_fail; | |
02fc2eee NC |
4922 | } while (i--); |
4923 | ||
4924 | /* Now have 2 UDP sockets. Find out which port each is connected to, and | |
4925 | for each connect the other socket to it. */ | |
4926 | i = 1; | |
4927 | do { | |
3aed30dc HS |
4928 | if (PerlSock_getsockname(sockets[i], (struct sockaddr *) &addresses[i], |
4929 | &size) == -1) | |
4930 | goto tidy_up_and_fail; | |
4931 | if (size != sizeof(struct sockaddr_in)) | |
4932 | goto abort_tidy_up_and_fail; | |
4933 | /* !1 is 0, !0 is 1 */ | |
4934 | if (PerlSock_connect(sockets[!i], (struct sockaddr *) &addresses[i], | |
4935 | sizeof(struct sockaddr_in)) == -1) | |
4936 | goto tidy_up_and_fail; | |
02fc2eee NC |
4937 | } while (i--); |
4938 | ||
4939 | /* Now we have 2 sockets connected to each other. I don't trust some other | |
4940 | process not to have already sent a packet to us (by random) so send | |
4941 | a packet from each to the other. */ | |
4942 | i = 1; | |
4943 | do { | |
3aed30dc HS |
4944 | /* I'm going to send my own port number. As a short. |
4945 | (Who knows if someone somewhere has sin_port as a bitfield and needs | |
4946 | this routine. (I'm assuming crays have socketpair)) */ | |
4947 | port = addresses[i].sin_port; | |
4948 | got = PerlLIO_write(sockets[i], &port, sizeof(port)); | |
4949 | if (got != sizeof(port)) { | |
4950 | if (got == -1) | |
4951 | goto tidy_up_and_fail; | |
4952 | goto abort_tidy_up_and_fail; | |
4953 | } | |
02fc2eee NC |
4954 | } while (i--); |
4955 | ||
4956 | /* Packets sent. I don't trust them to have arrived though. | |
4957 | (As I understand it Solaris TCP stack is multithreaded. Non-blocking | |
4958 | connect to localhost will use a second kernel thread. In 2.6 the | |
4959 | first thread running the connect() returns before the second completes, | |
4960 | so EINPROGRESS> In 2.7 the improved stack is faster and connect() | |
4961 | returns 0. Poor programs have tripped up. One poor program's authors' | |
4962 | had a 50-1 reverse stock split. Not sure how connected these were.) | |
4963 | So I don't trust someone not to have an unpredictable UDP stack. | |
4964 | */ | |
4965 | ||
4966 | { | |
3aed30dc HS |
4967 | struct timeval waitfor = {0, 100000}; /* You have 0.1 seconds */ |
4968 | int max = sockets[1] > sockets[0] ? sockets[1] : sockets[0]; | |
4969 | fd_set rset; | |
4970 | ||
4971 | FD_ZERO(&rset); | |
ea407a0c NC |
4972 | FD_SET((unsigned int)sockets[0], &rset); |
4973 | FD_SET((unsigned int)sockets[1], &rset); | |
3aed30dc HS |
4974 | |
4975 | got = PerlSock_select(max + 1, &rset, NULL, NULL, &waitfor); | |
4976 | if (got != 2 || !FD_ISSET(sockets[0], &rset) | |
4977 | || !FD_ISSET(sockets[1], &rset)) { | |
4978 | /* I hope this is portable and appropriate. */ | |
4979 | if (got == -1) | |
4980 | goto tidy_up_and_fail; | |
4981 | goto abort_tidy_up_and_fail; | |
4982 | } | |
02fc2eee | 4983 | } |
f4758303 | 4984 | |
02fc2eee NC |
4985 | /* And the paranoia department even now doesn't trust it to have arrive |
4986 | (hence MSG_DONTWAIT). Or that what arrives was sent by us. */ | |
4987 | { | |
3aed30dc HS |
4988 | struct sockaddr_in readfrom; |
4989 | unsigned short buffer[2]; | |
02fc2eee | 4990 | |
3aed30dc HS |
4991 | i = 1; |
4992 | do { | |
02fc2eee | 4993 | #ifdef MSG_DONTWAIT |
3aed30dc HS |
4994 | got = PerlSock_recvfrom(sockets[i], (char *) &buffer, |
4995 | sizeof(buffer), MSG_DONTWAIT, | |
4996 | (struct sockaddr *) &readfrom, &size); | |
02fc2eee | 4997 | #else |
3aed30dc HS |
4998 | got = PerlSock_recvfrom(sockets[i], (char *) &buffer, |
4999 | sizeof(buffer), 0, | |
5000 | (struct sockaddr *) &readfrom, &size); | |
e10bb1e9 | 5001 | #endif |
02fc2eee | 5002 | |
3aed30dc HS |
5003 | if (got == -1) |
5004 | goto tidy_up_and_fail; | |
5005 | if (got != sizeof(port) | |
5006 | || size != sizeof(struct sockaddr_in) | |
5007 | /* Check other socket sent us its port. */ | |
5008 | || buffer[0] != (unsigned short) addresses[!i].sin_port | |
5009 | /* Check kernel says we got the datagram from that socket */ | |
5010 | || readfrom.sin_family != addresses[!i].sin_family | |
5011 | || readfrom.sin_addr.s_addr != addresses[!i].sin_addr.s_addr | |
5012 | || readfrom.sin_port != addresses[!i].sin_port) | |
5013 | goto abort_tidy_up_and_fail; | |
5014 | } while (i--); | |
02fc2eee NC |
5015 | } |
5016 | /* My caller (my_socketpair) has validated that this is non-NULL */ | |
5017 | fd[0] = sockets[0]; | |
5018 | fd[1] = sockets[1]; | |
5019 | /* I hereby declare this connection open. May God bless all who cross | |
5020 | her. */ | |
5021 | return 0; | |
5022 | ||
5023 | abort_tidy_up_and_fail: | |
5024 | errno = ECONNABORTED; | |
5025 | tidy_up_and_fail: | |
5026 | { | |
4ee39169 | 5027 | dSAVE_ERRNO; |
3aed30dc HS |
5028 | if (sockets[0] != -1) |
5029 | PerlLIO_close(sockets[0]); | |
5030 | if (sockets[1] != -1) | |
5031 | PerlLIO_close(sockets[1]); | |
4ee39169 | 5032 | RESTORE_ERRNO; |
3aed30dc | 5033 | return -1; |
02fc2eee NC |
5034 | } |
5035 | } | |
85ca448a | 5036 | #endif /* EMULATE_SOCKETPAIR_UDP */ |
02fc2eee | 5037 | |
b5ac89c3 | 5038 | #if !defined(HAS_SOCKETPAIR) && defined(HAS_SOCKET) && defined(AF_INET) && defined(PF_INET) |
02fc2eee NC |
5039 | int |
5040 | Perl_my_socketpair (int family, int type, int protocol, int fd[2]) { | |
5041 | /* Stevens says that family must be AF_LOCAL, protocol 0. | |
2948e0bd | 5042 | I'm going to enforce that, then ignore it, and use TCP (or UDP). */ |
e10bb1e9 | 5043 | dTHX; |
02fc2eee NC |
5044 | int listener = -1; |
5045 | int connector = -1; | |
5046 | int acceptor = -1; | |
5047 | struct sockaddr_in listen_addr; | |
5048 | struct sockaddr_in connect_addr; | |
5049 | Sock_size_t size; | |
5050 | ||
50458334 JH |
5051 | if (protocol |
5052 | #ifdef AF_UNIX | |
5053 | || family != AF_UNIX | |
5054 | #endif | |
3aed30dc HS |
5055 | ) { |
5056 | errno = EAFNOSUPPORT; | |
5057 | return -1; | |
02fc2eee | 5058 | } |
2948e0bd | 5059 | if (!fd) { |
3aed30dc HS |
5060 | errno = EINVAL; |
5061 | return -1; | |
2948e0bd | 5062 | } |
02fc2eee | 5063 | |
2bc69dc4 | 5064 | #ifdef EMULATE_SOCKETPAIR_UDP |
02fc2eee | 5065 | if (type == SOCK_DGRAM) |
3aed30dc | 5066 | return S_socketpair_udp(fd); |
2bc69dc4 | 5067 | #endif |
02fc2eee | 5068 | |
3aed30dc | 5069 | listener = PerlSock_socket(AF_INET, type, 0); |
02fc2eee | 5070 | if (listener == -1) |
3aed30dc HS |
5071 | return -1; |
5072 | memset(&listen_addr, 0, sizeof(listen_addr)); | |
02fc2eee | 5073 | listen_addr.sin_family = AF_INET; |
3aed30dc | 5074 | listen_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); |
02fc2eee | 5075 | listen_addr.sin_port = 0; /* kernel choses port. */ |
3aed30dc HS |
5076 | if (PerlSock_bind(listener, (struct sockaddr *) &listen_addr, |
5077 | sizeof(listen_addr)) == -1) | |
5078 | goto tidy_up_and_fail; | |
e10bb1e9 | 5079 | if (PerlSock_listen(listener, 1) == -1) |
3aed30dc | 5080 | goto tidy_up_and_fail; |
02fc2eee | 5081 | |
3aed30dc | 5082 | connector = PerlSock_socket(AF_INET, type, 0); |
02fc2eee | 5083 | if (connector == -1) |
3aed30dc | 5084 | goto tidy_up_and_fail; |
02fc2eee | 5085 | /* We want to find out the port number to connect to. */ |
3aed30dc HS |
5086 | size = sizeof(connect_addr); |
5087 | if (PerlSock_getsockname(listener, (struct sockaddr *) &connect_addr, | |
5088 | &size) == -1) | |
5089 | goto tidy_up_and_fail; | |
5090 | if (size != sizeof(connect_addr)) | |
5091 | goto abort_tidy_up_and_fail; | |
e10bb1e9 | 5092 | if (PerlSock_connect(connector, (struct sockaddr *) &connect_addr, |
3aed30dc HS |
5093 | sizeof(connect_addr)) == -1) |
5094 | goto tidy_up_and_fail; | |
02fc2eee | 5095 | |
3aed30dc HS |
5096 | size = sizeof(listen_addr); |
5097 | acceptor = PerlSock_accept(listener, (struct sockaddr *) &listen_addr, | |
5098 | &size); | |
02fc2eee | 5099 | if (acceptor == -1) |
3aed30dc HS |
5100 | goto tidy_up_and_fail; |
5101 | if (size != sizeof(listen_addr)) | |
5102 | goto abort_tidy_up_and_fail; | |
5103 | PerlLIO_close(listener); | |
02fc2eee NC |
5104 | /* Now check we are talking to ourself by matching port and host on the |
5105 | two sockets. */ | |
3aed30dc HS |
5106 | if (PerlSock_getsockname(connector, (struct sockaddr *) &connect_addr, |
5107 | &size) == -1) | |
5108 | goto tidy_up_and_fail; | |
5109 | if (size != sizeof(connect_addr) | |
5110 | || listen_addr.sin_family != connect_addr.sin_family | |
5111 | || listen_addr.sin_addr.s_addr != connect_addr.sin_addr.s_addr | |
5112 | || listen_addr.sin_port != connect_addr.sin_port) { | |
5113 | goto abort_tidy_up_and_fail; | |
02fc2eee NC |
5114 | } |
5115 | fd[0] = connector; | |
5116 | fd[1] = acceptor; | |
5117 | return 0; | |
5118 | ||
5119 | abort_tidy_up_and_fail: | |
27da23d5 JH |
5120 | #ifdef ECONNABORTED |
5121 | errno = ECONNABORTED; /* This would be the standard thing to do. */ | |
5122 | #else | |
5123 | # ifdef ECONNREFUSED | |
5124 | errno = ECONNREFUSED; /* E.g. Symbian does not have ECONNABORTED. */ | |
5125 | # else | |
5126 | errno = ETIMEDOUT; /* Desperation time. */ | |
5127 | # endif | |
5128 | #endif | |
02fc2eee NC |
5129 | tidy_up_and_fail: |
5130 | { | |
4ee39169 | 5131 | dSAVE_ERRNO; |
3aed30dc HS |
5132 | if (listener != -1) |
5133 | PerlLIO_close(listener); | |
5134 | if (connector != -1) | |
5135 | PerlLIO_close(connector); | |
5136 | if (acceptor != -1) | |
5137 | PerlLIO_close(acceptor); | |
4ee39169 | 5138 | RESTORE_ERRNO; |
3aed30dc | 5139 | return -1; |
02fc2eee NC |
5140 | } |
5141 | } | |
85ca448a | 5142 | #else |
48ea76d1 JH |
5143 | /* In any case have a stub so that there's code corresponding |
5144 | * to the my_socketpair in global.sym. */ | |
5145 | int | |
5146 | Perl_my_socketpair (int family, int type, int protocol, int fd[2]) { | |
daf16542 | 5147 | #ifdef HAS_SOCKETPAIR |
48ea76d1 | 5148 | return socketpair(family, type, protocol, fd); |
daf16542 JH |
5149 | #else |
5150 | return -1; | |
5151 | #endif | |
48ea76d1 JH |
5152 | } |
5153 | #endif | |
5154 | ||
68795e93 NIS |
5155 | /* |
5156 | ||
5157 | =for apidoc sv_nosharing | |
5158 | ||
5159 | Dummy routine which "shares" an SV when there is no sharing module present. | |
d5b2b27b NC |
5160 | Or "locks" it. Or "unlocks" it. In other words, ignores its single SV argument. |
5161 | Exists to avoid test for a NULL function pointer and because it could | |
5162 | potentially warn under some level of strict-ness. | |
68795e93 NIS |
5163 | |
5164 | =cut | |
5165 | */ | |
5166 | ||
5167 | void | |
5168 | Perl_sv_nosharing(pTHX_ SV *sv) | |
5169 | { | |
96a5add6 | 5170 | PERL_UNUSED_CONTEXT; |
53c1dcc0 | 5171 | PERL_UNUSED_ARG(sv); |
68795e93 NIS |
5172 | } |
5173 | ||
eba16661 JH |
5174 | /* |
5175 | ||
5176 | =for apidoc sv_destroyable | |
5177 | ||
5178 | Dummy routine which reports that object can be destroyed when there is no | |
5179 | sharing module present. It ignores its single SV argument, and returns | |
5180 | 'true'. Exists to avoid test for a NULL function pointer and because it | |
5181 | could potentially warn under some level of strict-ness. | |
5182 | ||
5183 | =cut | |
5184 | */ | |
5185 | ||
5186 | bool | |
5187 | Perl_sv_destroyable(pTHX_ SV *sv) | |
5188 | { | |
5189 | PERL_UNUSED_CONTEXT; | |
5190 | PERL_UNUSED_ARG(sv); | |
5191 | return TRUE; | |
5192 | } | |
5193 | ||
a05d7ebb | 5194 | U32 |
e1ec3a88 | 5195 | Perl_parse_unicode_opts(pTHX_ const char **popt) |
a05d7ebb | 5196 | { |
e1ec3a88 | 5197 | const char *p = *popt; |
a05d7ebb JH |
5198 | U32 opt = 0; |
5199 | ||
7918f24d NC |
5200 | PERL_ARGS_ASSERT_PARSE_UNICODE_OPTS; |
5201 | ||
a05d7ebb JH |
5202 | if (*p) { |
5203 | if (isDIGIT(*p)) { | |
5204 | opt = (U32) atoi(p); | |
35da51f7 AL |
5205 | while (isDIGIT(*p)) |
5206 | p++; | |
7c91f477 | 5207 | if (*p && *p != '\n' && *p != '\r') |
a05d7ebb JH |
5208 | Perl_croak(aTHX_ "Unknown Unicode option letter '%c'", *p); |
5209 | } | |
5210 | else { | |
5211 | for (; *p; p++) { | |
5212 | switch (*p) { | |
5213 | case PERL_UNICODE_STDIN: | |
5214 | opt |= PERL_UNICODE_STDIN_FLAG; break; | |
5215 | case PERL_UNICODE_STDOUT: | |
5216 | opt |= PERL_UNICODE_STDOUT_FLAG; break; | |
5217 | case PERL_UNICODE_STDERR: | |
5218 | opt |= PERL_UNICODE_STDERR_FLAG; break; | |
5219 | case PERL_UNICODE_STD: | |
5220 | opt |= PERL_UNICODE_STD_FLAG; break; | |
5221 | case PERL_UNICODE_IN: | |
5222 | opt |= PERL_UNICODE_IN_FLAG; break; | |
5223 | case PERL_UNICODE_OUT: | |
5224 | opt |= PERL_UNICODE_OUT_FLAG; break; | |
5225 | case PERL_UNICODE_INOUT: | |
5226 | opt |= PERL_UNICODE_INOUT_FLAG; break; | |
5227 | case PERL_UNICODE_LOCALE: | |
5228 | opt |= PERL_UNICODE_LOCALE_FLAG; break; | |
5229 | case PERL_UNICODE_ARGV: | |
5230 | opt |= PERL_UNICODE_ARGV_FLAG; break; | |
5a22a2bb NC |
5231 | case PERL_UNICODE_UTF8CACHEASSERT: |
5232 | opt |= PERL_UNICODE_UTF8CACHEASSERT_FLAG; break; | |
a05d7ebb | 5233 | default: |
7c91f477 JH |
5234 | if (*p != '\n' && *p != '\r') |
5235 | Perl_croak(aTHX_ | |
5236 | "Unknown Unicode option letter '%c'", *p); | |
a05d7ebb JH |
5237 | } |
5238 | } | |
5239 | } | |
5240 | } | |
5241 | else | |
5242 | opt = PERL_UNICODE_DEFAULT_FLAGS; | |
5243 | ||
5244 | if (opt & ~PERL_UNICODE_ALL_FLAGS) | |
06e66572 | 5245 | Perl_croak(aTHX_ "Unknown Unicode option value %"UVuf, |
a05d7ebb JH |
5246 | (UV) (opt & ~PERL_UNICODE_ALL_FLAGS)); |
5247 | ||
5248 | *popt = p; | |
5249 | ||
5250 | return opt; | |
5251 | } | |
5252 | ||
132efe8b JH |
5253 | U32 |
5254 | Perl_seed(pTHX) | |
5255 | { | |
97aff369 | 5256 | dVAR; |
132efe8b JH |
5257 | /* |
5258 | * This is really just a quick hack which grabs various garbage | |
5259 | * values. It really should be a real hash algorithm which | |
5260 | * spreads the effect of every input bit onto every output bit, | |
5261 | * if someone who knows about such things would bother to write it. | |
5262 | * Might be a good idea to add that function to CORE as well. | |
5263 | * No numbers below come from careful analysis or anything here, | |
5264 | * except they are primes and SEED_C1 > 1E6 to get a full-width | |
5265 | * value from (tv_sec * SEED_C1 + tv_usec). The multipliers should | |
5266 | * probably be bigger too. | |
5267 | */ | |
5268 | #if RANDBITS > 16 | |
5269 | # define SEED_C1 1000003 | |
5270 | #define SEED_C4 73819 | |
5271 | #else | |
5272 | # define SEED_C1 25747 | |
5273 | #define SEED_C4 20639 | |
5274 | #endif | |
5275 | #define SEED_C2 3 | |
5276 | #define SEED_C3 269 | |
5277 | #define SEED_C5 26107 | |
5278 | ||
5279 | #ifndef PERL_NO_DEV_RANDOM | |
5280 | int fd; | |
5281 | #endif | |
5282 | U32 u; | |
5283 | #ifdef VMS | |
5284 | # include <starlet.h> | |
5285 | /* when[] = (low 32 bits, high 32 bits) of time since epoch | |
5286 | * in 100-ns units, typically incremented ever 10 ms. */ | |
5287 | unsigned int when[2]; | |
5288 | #else | |
5289 | # ifdef HAS_GETTIMEOFDAY | |
5290 | struct timeval when; | |
5291 | # else | |
5292 | Time_t when; | |
5293 | # endif | |
5294 | #endif | |
5295 | ||
5296 | /* This test is an escape hatch, this symbol isn't set by Configure. */ | |
5297 | #ifndef PERL_NO_DEV_RANDOM | |
5298 | #ifndef PERL_RANDOM_DEVICE | |
5299 | /* /dev/random isn't used by default because reads from it will block | |
5300 | * if there isn't enough entropy available. You can compile with | |
5301 | * PERL_RANDOM_DEVICE to it if you'd prefer Perl to block until there | |
5302 | * is enough real entropy to fill the seed. */ | |
5303 | # define PERL_RANDOM_DEVICE "/dev/urandom" | |
5304 | #endif | |
5305 | fd = PerlLIO_open(PERL_RANDOM_DEVICE, 0); | |
5306 | if (fd != -1) { | |
27da23d5 | 5307 | if (PerlLIO_read(fd, (void*)&u, sizeof u) != sizeof u) |
132efe8b JH |
5308 | u = 0; |
5309 | PerlLIO_close(fd); | |
5310 | if (u) | |
5311 | return u; | |
5312 | } | |
5313 | #endif | |
5314 | ||
5315 | #ifdef VMS | |
5316 | _ckvmssts(sys$gettim(when)); | |
5317 | u = (U32)SEED_C1 * when[0] + (U32)SEED_C2 * when[1]; | |
5318 | #else | |
5319 | # ifdef HAS_GETTIMEOFDAY | |
5320 | PerlProc_gettimeofday(&when,NULL); | |
5321 | u = (U32)SEED_C1 * when.tv_sec + (U32)SEED_C2 * when.tv_usec; | |
5322 | # else | |
5323 | (void)time(&when); | |
5324 | u = (U32)SEED_C1 * when; | |
5325 | # endif | |
5326 | #endif | |
5327 | u += SEED_C3 * (U32)PerlProc_getpid(); | |
5328 | u += SEED_C4 * (U32)PTR2UV(PL_stack_sp); | |
5329 | #ifndef PLAN9 /* XXX Plan9 assembler chokes on this; fix needed */ | |
5330 | u += SEED_C5 * (U32)PTR2UV(&when); | |
5331 | #endif | |
5332 | return u; | |
5333 | } | |
5334 | ||
bed60192 | 5335 | UV |
a783c5f4 | 5336 | Perl_get_hash_seed(pTHX) |
bed60192 | 5337 | { |
97aff369 | 5338 | dVAR; |
e1ec3a88 | 5339 | const char *s = PerlEnv_getenv("PERL_HASH_SEED"); |
bed60192 JH |
5340 | UV myseed = 0; |
5341 | ||
5342 | if (s) | |
35da51f7 AL |
5343 | while (isSPACE(*s)) |
5344 | s++; | |
bed60192 JH |
5345 | if (s && isDIGIT(*s)) |
5346 | myseed = (UV)Atoul(s); | |
5347 | else | |
5348 | #ifdef USE_HASH_SEED_EXPLICIT | |
5349 | if (s) | |
5350 | #endif | |
5351 | { | |
5352 | /* Compute a random seed */ | |
5353 | (void)seedDrand01((Rand_seed_t)seed()); | |
bed60192 JH |
5354 | myseed = (UV)(Drand01() * (NV)UV_MAX); |
5355 | #if RANDBITS < (UVSIZE * 8) | |
5356 | /* Since there are not enough randbits to to reach all | |
5357 | * the bits of a UV, the low bits might need extra | |
5358 | * help. Sum in another random number that will | |
5359 | * fill in the low bits. */ | |
5360 | myseed += | |
5361 | (UV)(Drand01() * (NV)((1 << ((UVSIZE * 8 - RANDBITS))) - 1)); | |
5362 | #endif /* RANDBITS < (UVSIZE * 8) */ | |
6cfd5ea7 JH |
5363 | if (myseed == 0) { /* Superparanoia. */ |
5364 | myseed = (UV)(Drand01() * (NV)UV_MAX); /* One more chance. */ | |
5365 | if (myseed == 0) | |
5366 | Perl_croak(aTHX_ "Your random numbers are not that random"); | |
5367 | } | |
bed60192 | 5368 | } |
008fb0c0 | 5369 | PL_rehash_seed_set = TRUE; |
bed60192 JH |
5370 | |
5371 | return myseed; | |
5372 | } | |
27da23d5 | 5373 | |
ed221c57 AL |
5374 | #ifdef USE_ITHREADS |
5375 | bool | |
5376 | Perl_stashpv_hvname_match(pTHX_ const COP *c, const HV *hv) | |
5377 | { | |
5378 | const char * const stashpv = CopSTASHPV(c); | |
5379 | const char * const name = HvNAME_get(hv); | |
96a5add6 | 5380 | PERL_UNUSED_CONTEXT; |
7918f24d | 5381 | PERL_ARGS_ASSERT_STASHPV_HVNAME_MATCH; |
ed221c57 AL |
5382 | |
5383 | if (stashpv == name) | |
5384 | return TRUE; | |
5385 | if (stashpv && name) | |
5386 | if (strEQ(stashpv, name)) | |
5387 | return TRUE; | |
5388 | return FALSE; | |
5389 | } | |
5390 | #endif | |
5391 | ||
5392 | ||
27da23d5 JH |
5393 | #ifdef PERL_GLOBAL_STRUCT |
5394 | ||
bae1192d JH |
5395 | #define PERL_GLOBAL_STRUCT_INIT |
5396 | #include "opcode.h" /* the ppaddr and check */ | |
5397 | ||
27da23d5 JH |
5398 | struct perl_vars * |
5399 | Perl_init_global_struct(pTHX) | |
5400 | { | |
5401 | struct perl_vars *plvarsp = NULL; | |
bae1192d | 5402 | # ifdef PERL_GLOBAL_STRUCT |
7452cf6a AL |
5403 | const IV nppaddr = sizeof(Gppaddr)/sizeof(Perl_ppaddr_t); |
5404 | const IV ncheck = sizeof(Gcheck) /sizeof(Perl_check_t); | |
27da23d5 JH |
5405 | # ifdef PERL_GLOBAL_STRUCT_PRIVATE |
5406 | /* PerlMem_malloc() because can't use even safesysmalloc() this early. */ | |
5407 | plvarsp = (struct perl_vars*)PerlMem_malloc(sizeof(struct perl_vars)); | |
5408 | if (!plvarsp) | |
5409 | exit(1); | |
5410 | # else | |
5411 | plvarsp = PL_VarsPtr; | |
5412 | # endif /* PERL_GLOBAL_STRUCT_PRIVATE */ | |
aadb217d JH |
5413 | # undef PERLVAR |
5414 | # undef PERLVARA | |
5415 | # undef PERLVARI | |
5416 | # undef PERLVARIC | |
5417 | # undef PERLVARISC | |
27da23d5 JH |
5418 | # define PERLVAR(var,type) /**/ |
5419 | # define PERLVARA(var,n,type) /**/ | |
5420 | # define PERLVARI(var,type,init) plvarsp->var = init; | |
5421 | # define PERLVARIC(var,type,init) plvarsp->var = init; | |
5422 | # define PERLVARISC(var,init) Copy(init, plvarsp->var, sizeof(init), char); | |
5423 | # include "perlvars.h" | |
5424 | # undef PERLVAR | |
5425 | # undef PERLVARA | |
5426 | # undef PERLVARI | |
5427 | # undef PERLVARIC | |
5428 | # undef PERLVARISC | |
5429 | # ifdef PERL_GLOBAL_STRUCT | |
bae1192d JH |
5430 | plvarsp->Gppaddr = |
5431 | (Perl_ppaddr_t*) | |
5432 | PerlMem_malloc(nppaddr * sizeof(Perl_ppaddr_t)); | |
27da23d5 JH |
5433 | if (!plvarsp->Gppaddr) |
5434 | exit(1); | |
bae1192d JH |
5435 | plvarsp->Gcheck = |
5436 | (Perl_check_t*) | |
5437 | PerlMem_malloc(ncheck * sizeof(Perl_check_t)); | |
27da23d5 JH |
5438 | if (!plvarsp->Gcheck) |
5439 | exit(1); | |
5440 | Copy(Gppaddr, plvarsp->Gppaddr, nppaddr, Perl_ppaddr_t); | |
5441 | Copy(Gcheck, plvarsp->Gcheck, ncheck, Perl_check_t); | |
5442 | # endif | |
5443 | # ifdef PERL_SET_VARS | |
5444 | PERL_SET_VARS(plvarsp); | |
5445 | # endif | |
bae1192d JH |
5446 | # undef PERL_GLOBAL_STRUCT_INIT |
5447 | # endif | |
27da23d5 JH |
5448 | return plvarsp; |
5449 | } | |
5450 | ||
5451 | #endif /* PERL_GLOBAL_STRUCT */ | |
5452 | ||
5453 | #ifdef PERL_GLOBAL_STRUCT | |
5454 | ||
5455 | void | |
5456 | Perl_free_global_struct(pTHX_ struct perl_vars *plvarsp) | |
5457 | { | |
7918f24d | 5458 | PERL_ARGS_ASSERT_FREE_GLOBAL_STRUCT; |
bae1192d | 5459 | # ifdef PERL_GLOBAL_STRUCT |
27da23d5 JH |
5460 | # ifdef PERL_UNSET_VARS |
5461 | PERL_UNSET_VARS(plvarsp); | |
5462 | # endif | |
5463 | free(plvarsp->Gppaddr); | |
5464 | free(plvarsp->Gcheck); | |
bae1192d | 5465 | # ifdef PERL_GLOBAL_STRUCT_PRIVATE |
27da23d5 | 5466 | free(plvarsp); |
bae1192d JH |
5467 | # endif |
5468 | # endif | |
27da23d5 JH |
5469 | } |
5470 | ||
5471 | #endif /* PERL_GLOBAL_STRUCT */ | |
5472 | ||
fe4f188c JH |
5473 | #ifdef PERL_MEM_LOG |
5474 | ||
1cd8acb5 | 5475 | /* -DPERL_MEM_LOG: the Perl_mem_log_..() is compiled, including the |
73d1d973 JC |
5476 | * the default implementation, unless -DPERL_MEM_LOG_NOIMPL is also |
5477 | * given, and you supply your own implementation. | |
65ceff02 | 5478 | * |
2e5b5004 | 5479 | * The default implementation reads a single env var, PERL_MEM_LOG, |
1cd8acb5 JC |
5480 | * expecting one or more of the following: |
5481 | * | |
5482 | * \d+ - fd fd to write to : must be 1st (atoi) | |
2e5b5004 | 5483 | * 'm' - memlog was PERL_MEM_LOG=1 |
1cd8acb5 JC |
5484 | * 's' - svlog was PERL_SV_LOG=1 |
5485 | * 't' - timestamp was PERL_MEM_LOG_TIMESTAMP=1 | |
0b0ab801 | 5486 | * |
1cd8acb5 JC |
5487 | * This makes the logger controllable enough that it can reasonably be |
5488 | * added to the system perl. | |
65ceff02 JH |
5489 | */ |
5490 | ||
1cd8acb5 | 5491 | /* -DPERL_MEM_LOG_SPRINTF_BUF_SIZE=X: size of a (stack-allocated) buffer |
65ceff02 JH |
5492 | * the Perl_mem_log_...() will use (either via sprintf or snprintf). |
5493 | */ | |
e352bcff JH |
5494 | #define PERL_MEM_LOG_SPRINTF_BUF_SIZE 128 |
5495 | ||
1cd8acb5 JC |
5496 | /* -DPERL_MEM_LOG_FD=N: the file descriptor the Perl_mem_log_...() |
5497 | * writes to. In the default logger, this is settable at runtime. | |
65ceff02 JH |
5498 | */ |
5499 | #ifndef PERL_MEM_LOG_FD | |
5500 | # define PERL_MEM_LOG_FD 2 /* If STDERR is too boring for you. */ | |
5501 | #endif | |
5502 | ||
73d1d973 | 5503 | #ifndef PERL_MEM_LOG_NOIMPL |
d7a2c63c MHM |
5504 | |
5505 | # ifdef DEBUG_LEAKING_SCALARS | |
5506 | # define SV_LOG_SERIAL_FMT " [%lu]" | |
5507 | # define _SV_LOG_SERIAL_ARG(sv) , (unsigned long) (sv)->sv_debug_serial | |
5508 | # else | |
5509 | # define SV_LOG_SERIAL_FMT | |
5510 | # define _SV_LOG_SERIAL_ARG(sv) | |
5511 | # endif | |
5512 | ||
0b0ab801 | 5513 | static void |
73d1d973 JC |
5514 | S_mem_log_common(enum mem_log_type mlt, const UV n, |
5515 | const UV typesize, const char *type_name, const SV *sv, | |
5516 | Malloc_t oldalloc, Malloc_t newalloc, | |
5517 | const char *filename, const int linenumber, | |
5518 | const char *funcname) | |
0b0ab801 | 5519 | { |
1cd8acb5 | 5520 | const char *pmlenv; |
4ca7bcef | 5521 | |
1cd8acb5 | 5522 | PERL_ARGS_ASSERT_MEM_LOG_COMMON; |
4ca7bcef | 5523 | |
1cd8acb5 JC |
5524 | pmlenv = PerlEnv_getenv("PERL_MEM_LOG"); |
5525 | if (!pmlenv) | |
5526 | return; | |
5527 | if (mlt < MLT_NEW_SV ? strchr(pmlenv,'m') : strchr(pmlenv,'s')) | |
65ceff02 JH |
5528 | { |
5529 | /* We can't use SVs or PerlIO for obvious reasons, | |
5530 | * so we'll use stdio and low-level IO instead. */ | |
5531 | char buf[PERL_MEM_LOG_SPRINTF_BUF_SIZE]; | |
1cd8acb5 | 5532 | |
5b692037 | 5533 | # ifdef HAS_GETTIMEOFDAY |
0b0ab801 MHM |
5534 | # define MEM_LOG_TIME_FMT "%10d.%06d: " |
5535 | # define MEM_LOG_TIME_ARG (int)tv.tv_sec, (int)tv.tv_usec | |
5536 | struct timeval tv; | |
65ceff02 | 5537 | gettimeofday(&tv, 0); |
0b0ab801 MHM |
5538 | # else |
5539 | # define MEM_LOG_TIME_FMT "%10d: " | |
5540 | # define MEM_LOG_TIME_ARG (int)when | |
5541 | Time_t when; | |
5542 | (void)time(&when); | |
5b692037 JH |
5543 | # endif |
5544 | /* If there are other OS specific ways of hires time than | |
40d04ec4 | 5545 | * gettimeofday() (see ext/Time-HiRes), the easiest way is |
5b692037 JH |
5546 | * probably that they would be used to fill in the struct |
5547 | * timeval. */ | |
65ceff02 | 5548 | { |
0b0ab801 | 5549 | STRLEN len; |
1cd8acb5 JC |
5550 | int fd = atoi(pmlenv); |
5551 | if (!fd) | |
5552 | fd = PERL_MEM_LOG_FD; | |
0b0ab801 | 5553 | |
1cd8acb5 | 5554 | if (strchr(pmlenv, 't')) { |
0b0ab801 MHM |
5555 | len = my_snprintf(buf, sizeof(buf), |
5556 | MEM_LOG_TIME_FMT, MEM_LOG_TIME_ARG); | |
5557 | PerlLIO_write(fd, buf, len); | |
5558 | } | |
0b0ab801 MHM |
5559 | switch (mlt) { |
5560 | case MLT_ALLOC: | |
5561 | len = my_snprintf(buf, sizeof(buf), | |
5562 | "alloc: %s:%d:%s: %"IVdf" %"UVuf | |
5563 | " %s = %"IVdf": %"UVxf"\n", | |
5564 | filename, linenumber, funcname, n, typesize, | |
bef8a128 | 5565 | type_name, n * typesize, PTR2UV(newalloc)); |
0b0ab801 MHM |
5566 | break; |
5567 | case MLT_REALLOC: | |
5568 | len = my_snprintf(buf, sizeof(buf), | |
5569 | "realloc: %s:%d:%s: %"IVdf" %"UVuf | |
5570 | " %s = %"IVdf": %"UVxf" -> %"UVxf"\n", | |
5571 | filename, linenumber, funcname, n, typesize, | |
bef8a128 | 5572 | type_name, n * typesize, PTR2UV(oldalloc), |
0b0ab801 MHM |
5573 | PTR2UV(newalloc)); |
5574 | break; | |
5575 | case MLT_FREE: | |
5576 | len = my_snprintf(buf, sizeof(buf), | |
5577 | "free: %s:%d:%s: %"UVxf"\n", | |
5578 | filename, linenumber, funcname, | |
5579 | PTR2UV(oldalloc)); | |
5580 | break; | |
d7a2c63c MHM |
5581 | case MLT_NEW_SV: |
5582 | case MLT_DEL_SV: | |
5583 | len = my_snprintf(buf, sizeof(buf), | |
5584 | "%s_SV: %s:%d:%s: %"UVxf SV_LOG_SERIAL_FMT "\n", | |
5585 | mlt == MLT_NEW_SV ? "new" : "del", | |
5586 | filename, linenumber, funcname, | |
5587 | PTR2UV(sv) _SV_LOG_SERIAL_ARG(sv)); | |
5588 | break; | |
73d1d973 JC |
5589 | default: |
5590 | len = 0; | |
0b0ab801 MHM |
5591 | } |
5592 | PerlLIO_write(fd, buf, len); | |
65ceff02 JH |
5593 | } |
5594 | } | |
0b0ab801 | 5595 | } |
73d1d973 JC |
5596 | #endif /* !PERL_MEM_LOG_NOIMPL */ |
5597 | ||
5598 | #ifndef PERL_MEM_LOG_NOIMPL | |
5599 | # define \ | |
5600 | mem_log_common_if(alty, num, tysz, tynm, sv, oal, nal, flnm, ln, fnnm) \ | |
5601 | mem_log_common (alty, num, tysz, tynm, sv, oal, nal, flnm, ln, fnnm) | |
5602 | #else | |
5603 | /* this is suboptimal, but bug compatible. User is providing their | |
5604 | own implemenation, but is getting these functions anyway, and they | |
5605 | do nothing. But _NOIMPL users should be able to cope or fix */ | |
5606 | # define \ | |
5607 | mem_log_common_if(alty, num, tysz, tynm, u, oal, nal, flnm, ln, fnnm) \ | |
5608 | /* mem_log_common_if_PERL_MEM_LOG_NOIMPL */ | |
0b0ab801 MHM |
5609 | #endif |
5610 | ||
5611 | Malloc_t | |
73d1d973 JC |
5612 | Perl_mem_log_alloc(const UV n, const UV typesize, const char *type_name, |
5613 | Malloc_t newalloc, | |
5614 | const char *filename, const int linenumber, | |
5615 | const char *funcname) | |
5616 | { | |
5617 | mem_log_common_if(MLT_ALLOC, n, typesize, type_name, | |
5618 | NULL, NULL, newalloc, | |
5619 | filename, linenumber, funcname); | |
fe4f188c JH |
5620 | return newalloc; |
5621 | } | |
5622 | ||
5623 | Malloc_t | |
73d1d973 JC |
5624 | Perl_mem_log_realloc(const UV n, const UV typesize, const char *type_name, |
5625 | Malloc_t oldalloc, Malloc_t newalloc, | |
5626 | const char *filename, const int linenumber, | |
5627 | const char *funcname) | |
5628 | { | |
5629 | mem_log_common_if(MLT_REALLOC, n, typesize, type_name, | |
5630 | NULL, oldalloc, newalloc, | |
5631 | filename, linenumber, funcname); | |
fe4f188c JH |
5632 | return newalloc; |
5633 | } | |
5634 | ||
5635 | Malloc_t | |
73d1d973 JC |
5636 | Perl_mem_log_free(Malloc_t oldalloc, |
5637 | const char *filename, const int linenumber, | |
5638 | const char *funcname) | |
fe4f188c | 5639 | { |
73d1d973 JC |
5640 | mem_log_common_if(MLT_FREE, 0, 0, "", NULL, oldalloc, NULL, |
5641 | filename, linenumber, funcname); | |
fe4f188c JH |
5642 | return oldalloc; |
5643 | } | |
5644 | ||
d7a2c63c | 5645 | void |
73d1d973 JC |
5646 | Perl_mem_log_new_sv(const SV *sv, |
5647 | const char *filename, const int linenumber, | |
5648 | const char *funcname) | |
d7a2c63c | 5649 | { |
73d1d973 JC |
5650 | mem_log_common_if(MLT_NEW_SV, 0, 0, "", sv, NULL, NULL, |
5651 | filename, linenumber, funcname); | |
d7a2c63c MHM |
5652 | } |
5653 | ||
5654 | void | |
73d1d973 JC |
5655 | Perl_mem_log_del_sv(const SV *sv, |
5656 | const char *filename, const int linenumber, | |
5657 | const char *funcname) | |
d7a2c63c | 5658 | { |
73d1d973 JC |
5659 | mem_log_common_if(MLT_DEL_SV, 0, 0, "", sv, NULL, NULL, |
5660 | filename, linenumber, funcname); | |
d7a2c63c MHM |
5661 | } |
5662 | ||
fe4f188c JH |
5663 | #endif /* PERL_MEM_LOG */ |
5664 | ||
66610fdd | 5665 | /* |
ce582cee NC |
5666 | =for apidoc my_sprintf |
5667 | ||
5668 | The C library C<sprintf>, wrapped if necessary, to ensure that it will return | |
5669 | the length of the string written to the buffer. Only rare pre-ANSI systems | |
5670 | need the wrapper function - usually this is a direct call to C<sprintf>. | |
5671 | ||
5672 | =cut | |
5673 | */ | |
5674 | #ifndef SPRINTF_RETURNS_STRLEN | |
5675 | int | |
5676 | Perl_my_sprintf(char *buffer, const char* pat, ...) | |
5677 | { | |
5678 | va_list args; | |
7918f24d | 5679 | PERL_ARGS_ASSERT_MY_SPRINTF; |
ce582cee NC |
5680 | va_start(args, pat); |
5681 | vsprintf(buffer, pat, args); | |
5682 | va_end(args); | |
5683 | return strlen(buffer); | |
5684 | } | |
5685 | #endif | |
5686 | ||
d9fad198 JH |
5687 | /* |
5688 | =for apidoc my_snprintf | |
5689 | ||
5690 | The C library C<snprintf> functionality, if available and | |
5b692037 | 5691 | standards-compliant (uses C<vsnprintf>, actually). However, if the |
d9fad198 | 5692 | C<vsnprintf> is not available, will unfortunately use the unsafe |
5b692037 JH |
5693 | C<vsprintf> which can overrun the buffer (there is an overrun check, |
5694 | but that may be too late). Consider using C<sv_vcatpvf> instead, or | |
5695 | getting C<vsnprintf>. | |
d9fad198 JH |
5696 | |
5697 | =cut | |
5698 | */ | |
5699 | int | |
5700 | Perl_my_snprintf(char *buffer, const Size_t len, const char *format, ...) | |
d9fad198 JH |
5701 | { |
5702 | dTHX; | |
5703 | int retval; | |
5704 | va_list ap; | |
7918f24d | 5705 | PERL_ARGS_ASSERT_MY_SNPRINTF; |
d9fad198 | 5706 | va_start(ap, format); |
5b692037 | 5707 | #ifdef HAS_VSNPRINTF |
d9fad198 JH |
5708 | retval = vsnprintf(buffer, len, format, ap); |
5709 | #else | |
5710 | retval = vsprintf(buffer, format, ap); | |
5711 | #endif | |
5712 | va_end(ap); | |
1208b3dd | 5713 | /* vsnprintf() shows failure with >= len, vsprintf() with < 0 */ |
625dac9d | 5714 | if (retval < 0 || (len > 0 && (Size_t)retval >= len)) |
5b692037 | 5715 | Perl_croak(aTHX_ "panic: my_snprintf buffer overflow"); |
d9fad198 JH |
5716 | return retval; |
5717 | } | |
5718 | ||
5719 | /* | |
5720 | =for apidoc my_vsnprintf | |
5721 | ||
5b692037 JH |
5722 | The C library C<vsnprintf> if available and standards-compliant. |
5723 | However, if if the C<vsnprintf> is not available, will unfortunately | |
5724 | use the unsafe C<vsprintf> which can overrun the buffer (there is an | |
5725 | overrun check, but that may be too late). Consider using | |
5726 | C<sv_vcatpvf> instead, or getting C<vsnprintf>. | |
d9fad198 JH |
5727 | |
5728 | =cut | |
5729 | */ | |
5730 | int | |
5731 | Perl_my_vsnprintf(char *buffer, const Size_t len, const char *format, va_list ap) | |
d9fad198 JH |
5732 | { |
5733 | dTHX; | |
5734 | int retval; | |
d9fad198 JH |
5735 | #ifdef NEED_VA_COPY |
5736 | va_list apc; | |
7918f24d NC |
5737 | |
5738 | PERL_ARGS_ASSERT_MY_VSNPRINTF; | |
5739 | ||
239fec62 | 5740 | Perl_va_copy(ap, apc); |
5b692037 | 5741 | # ifdef HAS_VSNPRINTF |
d9fad198 JH |
5742 | retval = vsnprintf(buffer, len, format, apc); |
5743 | # else | |
5744 | retval = vsprintf(buffer, format, apc); | |
5745 | # endif | |
5746 | #else | |
5b692037 | 5747 | # ifdef HAS_VSNPRINTF |
d9fad198 JH |
5748 | retval = vsnprintf(buffer, len, format, ap); |
5749 | # else | |
5750 | retval = vsprintf(buffer, format, ap); | |
5751 | # endif | |
5b692037 | 5752 | #endif /* #ifdef NEED_VA_COPY */ |
1208b3dd | 5753 | /* vsnprintf() shows failure with >= len, vsprintf() with < 0 */ |
625dac9d | 5754 | if (retval < 0 || (len > 0 && (Size_t)retval >= len)) |
5b692037 | 5755 | Perl_croak(aTHX_ "panic: my_vsnprintf buffer overflow"); |
d9fad198 JH |
5756 | return retval; |
5757 | } | |
5758 | ||
b0269e46 AB |
5759 | void |
5760 | Perl_my_clearenv(pTHX) | |
5761 | { | |
5762 | dVAR; | |
5763 | #if ! defined(PERL_MICRO) | |
5764 | # if defined(PERL_IMPLICIT_SYS) || defined(WIN32) | |
5765 | PerlEnv_clearenv(); | |
5766 | # else /* ! (PERL_IMPLICIT_SYS || WIN32) */ | |
5767 | # if defined(USE_ENVIRON_ARRAY) | |
5768 | # if defined(USE_ITHREADS) | |
5769 | /* only the parent thread can clobber the process environment */ | |
5770 | if (PL_curinterp == aTHX) | |
5771 | # endif /* USE_ITHREADS */ | |
5772 | { | |
5773 | # if ! defined(PERL_USE_SAFE_PUTENV) | |
5774 | if ( !PL_use_safe_putenv) { | |
5775 | I32 i; | |
5776 | if (environ == PL_origenviron) | |
5777 | environ = (char**)safesysmalloc(sizeof(char*)); | |
5778 | else | |
5779 | for (i = 0; environ[i]; i++) | |
5780 | (void)safesysfree(environ[i]); | |
5781 | } | |
5782 | environ[0] = NULL; | |
5783 | # else /* PERL_USE_SAFE_PUTENV */ | |
5784 | # if defined(HAS_CLEARENV) | |
5785 | (void)clearenv(); | |
5786 | # elif defined(HAS_UNSETENV) | |
5787 | int bsiz = 80; /* Most envvar names will be shorter than this. */ | |
d1307786 JH |
5788 | int bufsiz = bsiz * sizeof(char); /* sizeof(char) paranoid? */ |
5789 | char *buf = (char*)safesysmalloc(bufsiz); | |
b0269e46 AB |
5790 | while (*environ != NULL) { |
5791 | char *e = strchr(*environ, '='); | |
b57a0404 | 5792 | int l = e ? e - *environ : (int)strlen(*environ); |
b0269e46 AB |
5793 | if (bsiz < l + 1) { |
5794 | (void)safesysfree(buf); | |
1bdfa2de | 5795 | bsiz = l + 1; /* + 1 for the \0. */ |
d1307786 | 5796 | buf = (char*)safesysmalloc(bufsiz); |
b0269e46 | 5797 | } |
82d8bb49 NC |
5798 | memcpy(buf, *environ, l); |
5799 | buf[l] = '\0'; | |
b0269e46 AB |
5800 | (void)unsetenv(buf); |
5801 | } | |
5802 | (void)safesysfree(buf); | |
5803 | # else /* ! HAS_CLEARENV && ! HAS_UNSETENV */ | |
5804 | /* Just null environ and accept the leakage. */ | |
5805 | *environ = NULL; | |
5806 | # endif /* HAS_CLEARENV || HAS_UNSETENV */ | |
5807 | # endif /* ! PERL_USE_SAFE_PUTENV */ | |
5808 | } | |
5809 | # endif /* USE_ENVIRON_ARRAY */ | |
5810 | # endif /* PERL_IMPLICIT_SYS || WIN32 */ | |
5811 | #endif /* PERL_MICRO */ | |
5812 | } | |
5813 | ||
f16dd614 DM |
5814 | #ifdef PERL_IMPLICIT_CONTEXT |
5815 | ||
53d44271 | 5816 | /* Implements the MY_CXT_INIT macro. The first time a module is loaded, |
f16dd614 DM |
5817 | the global PL_my_cxt_index is incremented, and that value is assigned to |
5818 | that module's static my_cxt_index (who's address is passed as an arg). | |
5819 | Then, for each interpreter this function is called for, it makes sure a | |
5820 | void* slot is available to hang the static data off, by allocating or | |
5821 | extending the interpreter's PL_my_cxt_list array */ | |
5822 | ||
53d44271 | 5823 | #ifndef PERL_GLOBAL_STRUCT_PRIVATE |
f16dd614 DM |
5824 | void * |
5825 | Perl_my_cxt_init(pTHX_ int *index, size_t size) | |
5826 | { | |
97aff369 | 5827 | dVAR; |
f16dd614 | 5828 | void *p; |
7918f24d | 5829 | PERL_ARGS_ASSERT_MY_CXT_INIT; |
f16dd614 DM |
5830 | if (*index == -1) { |
5831 | /* this module hasn't been allocated an index yet */ | |
5832 | MUTEX_LOCK(&PL_my_ctx_mutex); | |
5833 | *index = PL_my_cxt_index++; | |
5834 | MUTEX_UNLOCK(&PL_my_ctx_mutex); | |
5835 | } | |
5836 | ||
5837 | /* make sure the array is big enough */ | |
4c901e72 DM |
5838 | if (PL_my_cxt_size <= *index) { |
5839 | if (PL_my_cxt_size) { | |
5840 | while (PL_my_cxt_size <= *index) | |
f16dd614 DM |
5841 | PL_my_cxt_size *= 2; |
5842 | Renew(PL_my_cxt_list, PL_my_cxt_size, void *); | |
5843 | } | |
5844 | else { | |
5845 | PL_my_cxt_size = 16; | |
5846 | Newx(PL_my_cxt_list, PL_my_cxt_size, void *); | |
5847 | } | |
5848 | } | |
5849 | /* newSV() allocates one more than needed */ | |
5850 | p = (void*)SvPVX(newSV(size-1)); | |
5851 | PL_my_cxt_list[*index] = p; | |
5852 | Zero(p, size, char); | |
5853 | return p; | |
5854 | } | |
53d44271 JH |
5855 | |
5856 | #else /* #ifndef PERL_GLOBAL_STRUCT_PRIVATE */ | |
5857 | ||
5858 | int | |
5859 | Perl_my_cxt_index(pTHX_ const char *my_cxt_key) | |
5860 | { | |
5861 | dVAR; | |
5862 | int index; | |
5863 | ||
7918f24d NC |
5864 | PERL_ARGS_ASSERT_MY_CXT_INDEX; |
5865 | ||
53d44271 JH |
5866 | for (index = 0; index < PL_my_cxt_index; index++) { |
5867 | const char *key = PL_my_cxt_keys[index]; | |
5868 | /* try direct pointer compare first - there are chances to success, | |
5869 | * and it's much faster. | |
5870 | */ | |
5871 | if ((key == my_cxt_key) || strEQ(key, my_cxt_key)) | |
5872 | return index; | |
5873 | } | |
5874 | return -1; | |
5875 | } | |
5876 | ||
5877 | void * | |
5878 | Perl_my_cxt_init(pTHX_ const char *my_cxt_key, size_t size) | |
5879 | { | |
5880 | dVAR; | |
5881 | void *p; | |
5882 | int index; | |
5883 | ||
7918f24d NC |
5884 | PERL_ARGS_ASSERT_MY_CXT_INIT; |
5885 | ||
53d44271 JH |
5886 | index = Perl_my_cxt_index(aTHX_ my_cxt_key); |
5887 | if (index == -1) { | |
5888 | /* this module hasn't been allocated an index yet */ | |
5889 | MUTEX_LOCK(&PL_my_ctx_mutex); | |
5890 | index = PL_my_cxt_index++; | |
5891 | MUTEX_UNLOCK(&PL_my_ctx_mutex); | |
5892 | } | |
5893 | ||
5894 | /* make sure the array is big enough */ | |
5895 | if (PL_my_cxt_size <= index) { | |
5896 | int old_size = PL_my_cxt_size; | |
5897 | int i; | |
5898 | if (PL_my_cxt_size) { | |
5899 | while (PL_my_cxt_size <= index) | |
5900 | PL_my_cxt_size *= 2; | |
5901 | Renew(PL_my_cxt_list, PL_my_cxt_size, void *); | |
5902 | Renew(PL_my_cxt_keys, PL_my_cxt_size, const char *); | |
5903 | } | |
5904 | else { | |
5905 | PL_my_cxt_size = 16; | |
5906 | Newx(PL_my_cxt_list, PL_my_cxt_size, void *); | |
5907 | Newx(PL_my_cxt_keys, PL_my_cxt_size, const char *); | |
5908 | } | |
5909 | for (i = old_size; i < PL_my_cxt_size; i++) { | |
5910 | PL_my_cxt_keys[i] = 0; | |
5911 | PL_my_cxt_list[i] = 0; | |
5912 | } | |
5913 | } | |
5914 | PL_my_cxt_keys[index] = my_cxt_key; | |
5915 | /* newSV() allocates one more than needed */ | |
5916 | p = (void*)SvPVX(newSV(size-1)); | |
5917 | PL_my_cxt_list[index] = p; | |
5918 | Zero(p, size, char); | |
5919 | return p; | |
5920 | } | |
5921 | #endif /* #ifndef PERL_GLOBAL_STRUCT_PRIVATE */ | |
5922 | #endif /* PERL_IMPLICIT_CONTEXT */ | |
f16dd614 | 5923 | |
a6cc4119 SP |
5924 | #ifndef HAS_STRLCAT |
5925 | Size_t | |
5926 | Perl_my_strlcat(char *dst, const char *src, Size_t size) | |
5927 | { | |
5928 | Size_t used, length, copy; | |
5929 | ||
5930 | used = strlen(dst); | |
5931 | length = strlen(src); | |
5932 | if (size > 0 && used < size - 1) { | |
5933 | copy = (length >= size - used) ? size - used - 1 : length; | |
5934 | memcpy(dst + used, src, copy); | |
5935 | dst[used + copy] = '\0'; | |
5936 | } | |
5937 | return used + length; | |
5938 | } | |
5939 | #endif | |
5940 | ||
5941 | #ifndef HAS_STRLCPY | |
5942 | Size_t | |
5943 | Perl_my_strlcpy(char *dst, const char *src, Size_t size) | |
5944 | { | |
5945 | Size_t length, copy; | |
5946 | ||
5947 | length = strlen(src); | |
5948 | if (size > 0) { | |
5949 | copy = (length >= size) ? size - 1 : length; | |
5950 | memcpy(dst, src, copy); | |
5951 | dst[copy] = '\0'; | |
5952 | } | |
5953 | return length; | |
5954 | } | |
5955 | #endif | |
5956 | ||
17dd9954 JH |
5957 | #if defined(_MSC_VER) && (_MSC_VER >= 1300) && (_MSC_VER < 1400) && (WINVER < 0x0500) |
5958 | /* VC7 or 7.1, building with pre-VC7 runtime libraries. */ | |
5959 | long _ftol( double ); /* Defined by VC6 C libs. */ | |
5960 | long _ftol2( double dblSource ) { return _ftol( dblSource ); } | |
5961 | #endif | |
5962 | ||
c51f309c NC |
5963 | void |
5964 | Perl_get_db_sub(pTHX_ SV **svp, CV *cv) | |
5965 | { | |
5966 | dVAR; | |
5967 | SV * const dbsv = GvSVn(PL_DBsub); | |
5968 | /* We do not care about using sv to call CV; | |
5969 | * it's for informational purposes only. | |
5970 | */ | |
5971 | ||
7918f24d NC |
5972 | PERL_ARGS_ASSERT_GET_DB_SUB; |
5973 | ||
c51f309c NC |
5974 | save_item(dbsv); |
5975 | if (!PERLDB_SUB_NN) { | |
5976 | GV * const gv = CvGV(cv); | |
5977 | ||
5978 | if ( svp && ((CvFLAGS(cv) & (CVf_ANON | CVf_CLONED)) | |
5979 | || strEQ(GvNAME(gv), "END") | |
5980 | || ((GvCV(gv) != cv) && /* Could be imported, and old sub redefined. */ | |
159b6efe NC |
5981 | !( (SvTYPE(*svp) == SVt_PVGV) |
5982 | && (GvCV((const GV *)*svp) == cv) )))) { | |
c51f309c NC |
5983 | /* Use GV from the stack as a fallback. */ |
5984 | /* GV is potentially non-unique, or contain different CV. */ | |
daba3364 | 5985 | SV * const tmp = newRV(MUTABLE_SV(cv)); |
c51f309c NC |
5986 | sv_setsv(dbsv, tmp); |
5987 | SvREFCNT_dec(tmp); | |
5988 | } | |
5989 | else { | |
5990 | gv_efullname3(dbsv, gv, NULL); | |
5991 | } | |
5992 | } | |
5993 | else { | |
5994 | const int type = SvTYPE(dbsv); | |
5995 | if (type < SVt_PVIV && type != SVt_IV) | |
5996 | sv_upgrade(dbsv, SVt_PVIV); | |
5997 | (void)SvIOK_on(dbsv); | |
5998 | SvIV_set(dbsv, PTR2IV(cv)); /* Do it the quickest way */ | |
5999 | } | |
6000 | } | |
6001 | ||
3497a01f | 6002 | int |
08ea85eb | 6003 | Perl_my_dirfd(pTHX_ DIR * dir) { |
3497a01f SP |
6004 | |
6005 | /* Most dirfd implementations have problems when passed NULL. */ | |
6006 | if(!dir) | |
6007 | return -1; | |
6008 | #ifdef HAS_DIRFD | |
6009 | return dirfd(dir); | |
6010 | #elif defined(HAS_DIR_DD_FD) | |
6011 | return dir->dd_fd; | |
6012 | #else | |
6013 | Perl_die(aTHX_ PL_no_func, "dirfd"); | |
6014 | /* NOT REACHED */ | |
6015 | return 0; | |
6016 | #endif | |
6017 | } | |
6018 | ||
f7e71195 AB |
6019 | REGEXP * |
6020 | Perl_get_re_arg(pTHX_ SV *sv) { | |
6021 | SV *tmpsv; | |
f7e71195 AB |
6022 | |
6023 | if (sv) { | |
6024 | if (SvMAGICAL(sv)) | |
6025 | mg_get(sv); | |
6026 | if (SvROK(sv) && | |
daba3364 | 6027 | (tmpsv = MUTABLE_SV(SvRV(sv))) && /* assign deliberate */ |
5c35adbb | 6028 | SvTYPE(tmpsv) == SVt_REGEXP) |
f7e71195 | 6029 | { |
d2f13c59 | 6030 | return (REGEXP*) tmpsv; |
f7e71195 AB |
6031 | } |
6032 | } | |
6033 | ||
6034 | return NULL; | |
6035 | } | |
6036 | ||
ce582cee | 6037 | /* |
66610fdd RGS |
6038 | * Local variables: |
6039 | * c-indentation-style: bsd | |
6040 | * c-basic-offset: 4 | |
6041 | * indent-tabs-mode: t | |
6042 | * End: | |
6043 | * | |
37442d52 RGS |
6044 | * ex: set ts=8 sts=4 sw=4 noet: |
6045 | */ |