Commit | Line | Data |
a0d0e21e |
1 | /* mg.c |
79072805 |
2 | * |
9607fc9c |
3 | * Copyright (c) 1991-1997, Larry Wall |
79072805 |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. |
7 | * |
a0d0e21e |
8 | */ |
9 | |
10 | /* |
11 | * "Sam sat on the ground and put his head in his hands. 'I wish I had never |
12 | * come here, and I don't want to see no more magic,' he said, and fell silent." |
79072805 |
13 | */ |
14 | |
15 | #include "EXTERN.h" |
16 | #include "perl.h" |
17 | |
e6d9441c |
18 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
a0d0e21e |
19 | #ifdef I_UNISTD |
20 | # include <unistd.h> |
21 | #endif |
a0d0e21e |
22 | |
5cd24f17 |
23 | #if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS) |
188ea221 |
24 | # ifndef NGROUPS |
25 | # define NGROUPS 32 |
26 | # endif |
27 | #endif |
28 | |
455ece5e |
29 | #ifdef PERL_OBJECT |
30 | # define VTBL this->*vtbl |
31 | #else |
32 | # define VTBL *vtbl |
33 | static void restore_magic _((void *p)); |
34 | #endif |
35 | |
c07a80fd |
36 | /* |
37 | * Use the "DESTRUCTOR" scope cleanup to reinstate magic. |
38 | */ |
39 | |
40 | struct magic_state { |
41 | SV* mgs_sv; |
42 | U32 mgs_flags; |
455ece5e |
43 | I32 mgs_ss_ix; |
c07a80fd |
44 | }; |
455ece5e |
45 | /* MGS is typedef'ed to struct magic_state in perl.h */ |
76e3520e |
46 | |
47 | STATIC void |
455ece5e |
48 | save_magic(I32 mgs_ix, SV *sv) |
c07a80fd |
49 | { |
46124e9e |
50 | dTHR; |
455ece5e |
51 | MGS* mgs; |
c07a80fd |
52 | assert(SvMAGICAL(sv)); |
53 | |
455ece5e |
54 | SAVEDESTRUCTOR(restore_magic, (void*)mgs_ix); |
55 | |
56 | mgs = SSPTR(mgs_ix, MGS*); |
c07a80fd |
57 | mgs->mgs_sv = sv; |
58 | mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv); |
455ece5e |
59 | mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */ |
c07a80fd |
60 | |
61 | SvMAGICAL_off(sv); |
62 | SvREADONLY_off(sv); |
63 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
c07a80fd |
64 | } |
65 | |
76e3520e |
66 | STATIC void |
8ac85365 |
67 | restore_magic(void *p) |
c07a80fd |
68 | { |
46124e9e |
69 | dTHR; |
455ece5e |
70 | MGS* mgs = SSPTR((I32)p, MGS*); |
c07a80fd |
71 | SV* sv = mgs->mgs_sv; |
72 | |
455ece5e |
73 | if (!sv) |
74 | return; |
75 | |
c07a80fd |
76 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) |
77 | { |
78 | if (mgs->mgs_flags) |
79 | SvFLAGS(sv) |= mgs->mgs_flags; |
80 | else |
81 | mg_magical(sv); |
82 | if (SvGMAGICAL(sv)) |
83 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); |
84 | } |
455ece5e |
85 | |
86 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ |
87 | |
88 | /* If we're still on top of the stack, pop us off. (That condition |
89 | * will be satisfied if restore_magic was called explicitly, but *not* |
90 | * if it's being called via leave_scope.) |
91 | * The reason for doing this is that otherwise, things like sv_2cv() |
92 | * may leave alloc gunk on the savestack, and some code |
93 | * (e.g. sighandler) doesn't expect that... |
94 | */ |
95 | if (PL_savestack_ix == mgs->mgs_ss_ix) |
96 | { |
3c8a4456 |
97 | I32 popval = SSPOPINT; |
98 | assert(popval == SAVEt_DESTRUCTOR); |
455ece5e |
99 | PL_savestack_ix -= 2; |
3c8a4456 |
100 | popval = SSPOPINT; |
101 | assert(popval == SAVEt_ALLOC); |
102 | popval = SSPOPINT; |
103 | PL_savestack_ix -= popval; |
455ece5e |
104 | } |
105 | |
c07a80fd |
106 | } |
107 | |
8990e307 |
108 | void |
8ac85365 |
109 | mg_magical(SV *sv) |
8990e307 |
110 | { |
111 | MAGIC* mg; |
112 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
113 | MGVTBL* vtbl = mg->mg_virtual; |
114 | if (vtbl) { |
76e3520e |
115 | if ((vtbl->svt_get != NULL) && !(mg->mg_flags & MGf_GSKIP)) |
8990e307 |
116 | SvGMAGICAL_on(sv); |
117 | if (vtbl->svt_set) |
118 | SvSMAGICAL_on(sv); |
76e3520e |
119 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || (vtbl->svt_clear != NULL)) |
8990e307 |
120 | SvRMAGICAL_on(sv); |
121 | } |
122 | } |
123 | } |
124 | |
79072805 |
125 | int |
8ac85365 |
126 | mg_get(SV *sv) |
79072805 |
127 | { |
46124e9e |
128 | dTHR; |
455ece5e |
129 | I32 mgs_ix; |
79072805 |
130 | MAGIC* mg; |
c6496cc7 |
131 | MAGIC** mgp; |
760ac839 |
132 | int mgp_valid = 0; |
463ee0b2 |
133 | |
455ece5e |
134 | mgs_ix = SSNEW(sizeof(MGS)); |
135 | save_magic(mgs_ix, sv); |
463ee0b2 |
136 | |
c6496cc7 |
137 | mgp = &SvMAGIC(sv); |
138 | while ((mg = *mgp) != 0) { |
79072805 |
139 | MGVTBL* vtbl = mg->mg_virtual; |
76e3520e |
140 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && (vtbl->svt_get != NULL)) { |
141 | (VTBL->svt_get)(sv, mg); |
c6496cc7 |
142 | /* Ignore this magic if it's been deleted */ |
48e43a1c |
143 | if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) && |
144 | (mg->mg_flags & MGf_GSKIP)) |
455ece5e |
145 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
a0d0e21e |
146 | } |
c6496cc7 |
147 | /* Advance to next magic (complicated by possible deletion) */ |
760ac839 |
148 | if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) { |
c6496cc7 |
149 | mgp = &mg->mg_moremagic; |
760ac839 |
150 | mgp_valid = 1; |
151 | } |
152 | else |
153 | mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */ |
79072805 |
154 | } |
463ee0b2 |
155 | |
455ece5e |
156 | restore_magic((void*)mgs_ix); |
79072805 |
157 | return 0; |
158 | } |
159 | |
160 | int |
8ac85365 |
161 | mg_set(SV *sv) |
79072805 |
162 | { |
46124e9e |
163 | dTHR; |
455ece5e |
164 | I32 mgs_ix; |
79072805 |
165 | MAGIC* mg; |
463ee0b2 |
166 | MAGIC* nextmg; |
167 | |
455ece5e |
168 | mgs_ix = SSNEW(sizeof(MGS)); |
169 | save_magic(mgs_ix, sv); |
463ee0b2 |
170 | |
171 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { |
79072805 |
172 | MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 |
173 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e |
174 | if (mg->mg_flags & MGf_GSKIP) { |
175 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ |
455ece5e |
176 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
a0d0e21e |
177 | } |
76e3520e |
178 | if (vtbl && (vtbl->svt_set != NULL)) |
179 | (VTBL->svt_set)(sv, mg); |
79072805 |
180 | } |
463ee0b2 |
181 | |
455ece5e |
182 | restore_magic((void*)mgs_ix); |
79072805 |
183 | return 0; |
184 | } |
185 | |
186 | U32 |
565764a8 |
187 | mg_length(SV *sv) |
79072805 |
188 | { |
189 | MAGIC* mg; |
748a9306 |
190 | char *junk; |
463ee0b2 |
191 | STRLEN len; |
463ee0b2 |
192 | |
79072805 |
193 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
194 | MGVTBL* vtbl = mg->mg_virtual; |
76e3520e |
195 | if (vtbl && (vtbl->svt_len != NULL)) { |
455ece5e |
196 | I32 mgs_ix; |
48e43a1c |
197 | |
455ece5e |
198 | mgs_ix = SSNEW(sizeof(MGS)); |
199 | save_magic(mgs_ix, sv); |
a0d0e21e |
200 | /* omit MGf_GSKIP -- not changed here */ |
76e3520e |
201 | len = (VTBL->svt_len)(sv, mg); |
455ece5e |
202 | restore_magic((void*)mgs_ix); |
85e6fe83 |
203 | return len; |
204 | } |
205 | } |
206 | |
748a9306 |
207 | junk = SvPV(sv, len); |
463ee0b2 |
208 | return len; |
79072805 |
209 | } |
210 | |
93965878 |
211 | I32 |
212 | mg_size(SV *sv) |
213 | { |
214 | MAGIC* mg; |
215 | I32 len; |
216 | |
217 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
218 | MGVTBL* vtbl = mg->mg_virtual; |
565764a8 |
219 | if (vtbl && (vtbl->svt_len != NULL)) { |
455ece5e |
220 | I32 mgs_ix; |
221 | |
222 | mgs_ix = SSNEW(sizeof(MGS)); |
223 | save_magic(mgs_ix, sv); |
93965878 |
224 | /* omit MGf_GSKIP -- not changed here */ |
565764a8 |
225 | len = (VTBL->svt_len)(sv, mg); |
455ece5e |
226 | restore_magic((void*)mgs_ix); |
93965878 |
227 | return len; |
228 | } |
229 | } |
230 | |
231 | switch(SvTYPE(sv)) { |
232 | case SVt_PVAV: |
233 | len = AvFILLp((AV *) sv); /* Fallback to non-tied array */ |
234 | return len; |
235 | case SVt_PVHV: |
236 | /* FIXME */ |
237 | default: |
238 | croak("Size magic not implemented"); |
239 | break; |
240 | } |
241 | return 0; |
242 | } |
243 | |
79072805 |
244 | int |
8ac85365 |
245 | mg_clear(SV *sv) |
79072805 |
246 | { |
455ece5e |
247 | I32 mgs_ix; |
79072805 |
248 | MAGIC* mg; |
463ee0b2 |
249 | |
455ece5e |
250 | mgs_ix = SSNEW(sizeof(MGS)); |
251 | save_magic(mgs_ix, sv); |
463ee0b2 |
252 | |
79072805 |
253 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
254 | MGVTBL* vtbl = mg->mg_virtual; |
a0d0e21e |
255 | /* omit GSKIP -- never set here */ |
256 | |
76e3520e |
257 | if (vtbl && (vtbl->svt_clear != NULL)) |
258 | (VTBL->svt_clear)(sv, mg); |
79072805 |
259 | } |
463ee0b2 |
260 | |
455ece5e |
261 | restore_magic((void*)mgs_ix); |
79072805 |
262 | return 0; |
263 | } |
264 | |
93a17b20 |
265 | MAGIC* |
8ac85365 |
266 | mg_find(SV *sv, int type) |
93a17b20 |
267 | { |
268 | MAGIC* mg; |
93a17b20 |
269 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
270 | if (mg->mg_type == type) |
271 | return mg; |
272 | } |
273 | return 0; |
274 | } |
275 | |
79072805 |
276 | int |
8ac85365 |
277 | mg_copy(SV *sv, SV *nsv, char *key, I32 klen) |
79072805 |
278 | { |
463ee0b2 |
279 | int count = 0; |
79072805 |
280 | MAGIC* mg; |
463ee0b2 |
281 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
282 | if (isUPPER(mg->mg_type)) { |
a0d0e21e |
283 | sv_magic(nsv, mg->mg_obj, toLOWER(mg->mg_type), key, klen); |
463ee0b2 |
284 | count++; |
79072805 |
285 | } |
79072805 |
286 | } |
463ee0b2 |
287 | return count; |
79072805 |
288 | } |
289 | |
290 | int |
8ac85365 |
291 | mg_free(SV *sv) |
79072805 |
292 | { |
293 | MAGIC* mg; |
294 | MAGIC* moremagic; |
295 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { |
296 | MGVTBL* vtbl = mg->mg_virtual; |
297 | moremagic = mg->mg_moremagic; |
76e3520e |
298 | if (vtbl && (vtbl->svt_free != NULL)) |
299 | (VTBL->svt_free)(sv, mg); |
93a17b20 |
300 | if (mg->mg_ptr && mg->mg_type != 'g') |
565764a8 |
301 | if (mg->mg_len >= 0) |
88e89b8a |
302 | Safefree(mg->mg_ptr); |
565764a8 |
303 | else if (mg->mg_len == HEf_SVKEY) |
88e89b8a |
304 | SvREFCNT_dec((SV*)mg->mg_ptr); |
85e6fe83 |
305 | if (mg->mg_flags & MGf_REFCOUNTED) |
8990e307 |
306 | SvREFCNT_dec(mg->mg_obj); |
79072805 |
307 | Safefree(mg); |
308 | } |
309 | SvMAGIC(sv) = 0; |
310 | return 0; |
311 | } |
312 | |
313 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
314 | #include <signal.h> |
315 | #endif |
316 | |
942e002e |
317 | U32 |
6cef1e77 |
318 | magic_regdata_cnt(SV *sv, MAGIC *mg) |
319 | { |
320 | dTHR; |
321 | register char *s; |
322 | register I32 i; |
323 | register REGEXP *rx; |
324 | char *t; |
325 | |
326 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) |
327 | return rx->lastparen; |
942e002e |
328 | return (U32)-1; |
6cef1e77 |
329 | } |
330 | |
331 | int |
332 | magic_regdatum_get(SV *sv, MAGIC *mg) |
333 | { |
334 | dTHR; |
335 | register I32 paren; |
336 | register char *s; |
337 | register I32 i; |
338 | register REGEXP *rx; |
339 | char *t; |
340 | |
341 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
342 | paren = mg->mg_len; |
343 | if (paren < 0) |
344 | return 0; |
345 | if (paren <= rx->nparens && |
346 | (s = rx->startp[paren]) && |
347 | (t = rx->endp[paren])) |
348 | { |
349 | if (mg->mg_obj) /* @+ */ |
350 | i = t - rx->subbase; |
351 | else /* @- */ |
352 | i = s - rx->subbase; |
353 | sv_setiv(sv,i); |
354 | } |
355 | } |
356 | return 0; |
357 | } |
358 | |
93a17b20 |
359 | U32 |
8ac85365 |
360 | magic_len(SV *sv, MAGIC *mg) |
93a17b20 |
361 | { |
a863c7d1 |
362 | dTHR; |
93a17b20 |
363 | register I32 paren; |
364 | register char *s; |
365 | register I32 i; |
d9f97599 |
366 | register REGEXP *rx; |
748a9306 |
367 | char *t; |
93a17b20 |
368 | |
369 | switch (*mg->mg_ptr) { |
370 | case '1': case '2': case '3': case '4': |
371 | case '5': case '6': case '7': case '8': case '9': case '&': |
3280af22 |
372 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
93a17b20 |
373 | paren = atoi(mg->mg_ptr); |
374 | getparen: |
d9f97599 |
375 | if (paren <= rx->nparens && |
376 | (s = rx->startp[paren]) && |
377 | (t = rx->endp[paren])) |
bbce6d69 |
378 | { |
748a9306 |
379 | i = t - s; |
71be2cbc |
380 | if (i >= 0) |
93a17b20 |
381 | return i; |
93a17b20 |
382 | } |
93a17b20 |
383 | } |
748a9306 |
384 | return 0; |
93a17b20 |
385 | case '+': |
3280af22 |
386 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
d9f97599 |
387 | paren = rx->lastparen; |
13f57bf8 |
388 | if (paren) |
389 | goto getparen; |
93a17b20 |
390 | } |
748a9306 |
391 | return 0; |
93a17b20 |
392 | case '`': |
3280af22 |
393 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
d9f97599 |
394 | if ((s = rx->subbeg) && rx->startp[0]) { |
395 | i = rx->startp[0] - s; |
71be2cbc |
396 | if (i >= 0) |
93a17b20 |
397 | return i; |
93a17b20 |
398 | } |
93a17b20 |
399 | } |
748a9306 |
400 | return 0; |
93a17b20 |
401 | case '\'': |
3280af22 |
402 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
d9f97599 |
403 | if (rx->subend && (s = rx->endp[0])) { |
404 | i = rx->subend - s; |
13f57bf8 |
405 | if (i >= 0) |
5cd24f17 |
406 | return i; |
93a17b20 |
407 | } |
93a17b20 |
408 | } |
748a9306 |
409 | return 0; |
93a17b20 |
410 | case ',': |
3280af22 |
411 | return (STRLEN)PL_ofslen; |
93a17b20 |
412 | case '\\': |
3280af22 |
413 | return (STRLEN)PL_orslen; |
93a17b20 |
414 | } |
415 | magic_get(sv,mg); |
416 | if (!SvPOK(sv) && SvNIOK(sv)) |
3280af22 |
417 | sv_2pv(sv, &PL_na); |
93a17b20 |
418 | if (SvPOK(sv)) |
419 | return SvCUR(sv); |
420 | return 0; |
421 | } |
422 | |
599cee73 |
423 | #if 0 |
424 | static char * |
425 | printW(sv) |
426 | SV * sv ; |
427 | { |
428 | #if 1 |
429 | return "" ; |
430 | |
431 | #else |
432 | int i ; |
433 | static char buffer[50] ; |
434 | char buf1[20] ; |
435 | char * p ; |
436 | |
437 | |
438 | sprintf(buffer, "Buffer %d, Length = %d - ", sv, SvCUR(sv)) ; |
439 | p = SvPVX(sv) ; |
440 | for (i = 0; i < SvCUR(sv) ; ++ i) { |
441 | sprintf (buf1, " %x [%x]", (p+i), *(p+i)) ; |
442 | strcat(buffer, buf1) ; |
443 | } |
444 | |
445 | return buffer ; |
446 | |
447 | #endif |
448 | } |
449 | #endif |
450 | |
79072805 |
451 | int |
8ac85365 |
452 | magic_get(SV *sv, MAGIC *mg) |
79072805 |
453 | { |
a863c7d1 |
454 | dTHR; |
79072805 |
455 | register I32 paren; |
456 | register char *s; |
457 | register I32 i; |
d9f97599 |
458 | register REGEXP *rx; |
748a9306 |
459 | char *t; |
79072805 |
460 | |
461 | switch (*mg->mg_ptr) { |
748a9306 |
462 | case '\001': /* ^A */ |
3280af22 |
463 | sv_setsv(sv, PL_bodytarget); |
748a9306 |
464 | break; |
599cee73 |
465 | case '\002': /* ^B */ |
466 | /* printf("magic_get $^B: ") ; */ |
e24b16f9 |
467 | if (PL_curcop->cop_warnings == WARN_NONE) |
599cee73 |
468 | /* printf("WARN_NONE\n"), */ |
469 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; |
e24b16f9 |
470 | else if (PL_curcop->cop_warnings == WARN_ALL) |
599cee73 |
471 | /* printf("WARN_ALL\n"), */ |
472 | sv_setpvn(sv, WARN_ALLstring, WARNsize) ; |
473 | else |
e24b16f9 |
474 | /* printf("some %s\n", printW(PL_curcop->cop_warnings)), */ |
475 | sv_setsv(sv, PL_curcop->cop_warnings); |
599cee73 |
476 | break; |
79072805 |
477 | case '\004': /* ^D */ |
3280af22 |
478 | sv_setiv(sv, (IV)(PL_debug & 32767)); |
79072805 |
479 | break; |
28f23441 |
480 | case '\005': /* ^E */ |
481 | #ifdef VMS |
482 | { |
483 | # include <descrip.h> |
484 | # include <starlet.h> |
485 | char msg[255]; |
486 | $DESCRIPTOR(msgdsc,msg); |
946ec16e |
487 | sv_setnv(sv,(double) vaxc$errno); |
28f23441 |
488 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) |
489 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); |
490 | else |
491 | sv_setpv(sv,""); |
492 | } |
493 | #else |
88e89b8a |
494 | #ifdef OS2 |
fb73857a |
495 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
496 | sv_setnv(sv, (double)errno); |
497 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
498 | } else { |
017f25f1 |
499 | if (errno != errno_isOS2) { |
500 | int tmp = _syserrno(); |
501 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ |
502 | Perl_rc = tmp; |
503 | } |
fb73857a |
504 | sv_setnv(sv, (double)Perl_rc); |
505 | sv_setpv(sv, os2error(Perl_rc)); |
506 | } |
88e89b8a |
507 | #else |
22fae026 |
508 | #ifdef WIN32 |
509 | { |
510 | DWORD dwErr = GetLastError(); |
511 | sv_setnv(sv, (double)dwErr); |
512 | if (dwErr) |
76e3520e |
513 | { |
514 | #ifdef PERL_OBJECT |
515 | char *sMsg; |
516 | DWORD dwLen; |
517 | PerlProc_GetSysMsg(sMsg, dwLen, dwErr); |
518 | sv_setpvn(sv, sMsg, dwLen); |
519 | PerlProc_FreeBuf(sMsg); |
520 | #else |
22fae026 |
521 | win32_str_os_error(sv, dwErr); |
76e3520e |
522 | #endif |
523 | } |
22fae026 |
524 | else |
525 | sv_setpv(sv, ""); |
526 | SetLastError(dwErr); |
527 | } |
528 | #else |
946ec16e |
529 | sv_setnv(sv, (double)errno); |
28f23441 |
530 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
531 | #endif |
88e89b8a |
532 | #endif |
22fae026 |
533 | #endif |
946ec16e |
534 | SvNOK_on(sv); /* what a wonderful hack! */ |
28f23441 |
535 | break; |
79072805 |
536 | case '\006': /* ^F */ |
3280af22 |
537 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 |
538 | break; |
a0d0e21e |
539 | case '\010': /* ^H */ |
3280af22 |
540 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e |
541 | break; |
9d116dd7 |
542 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 |
543 | if (PL_inplace) |
544 | sv_setpv(sv, PL_inplace); |
79072805 |
545 | else |
3280af22 |
546 | sv_setsv(sv, &PL_sv_undef); |
79072805 |
547 | break; |
28f23441 |
548 | case '\017': /* ^O */ |
3280af22 |
549 | sv_setpv(sv, PL_osname); |
28f23441 |
550 | break; |
79072805 |
551 | case '\020': /* ^P */ |
3280af22 |
552 | sv_setiv(sv, (IV)PL_perldb); |
79072805 |
553 | break; |
fb73857a |
554 | case '\023': /* ^S */ |
d58bf5aa |
555 | { |
556 | dTHR; |
3280af22 |
557 | if (PL_lex_state != LEX_NOTPARSING) |
d58bf5aa |
558 | SvOK_off(sv); |
3280af22 |
559 | else if (PL_in_eval) |
d58bf5aa |
560 | sv_setiv(sv, 1); |
561 | else |
562 | sv_setiv(sv, 0); |
563 | } |
fb73857a |
564 | break; |
79072805 |
565 | case '\024': /* ^T */ |
88e89b8a |
566 | #ifdef BIG_TIME |
6b88bc9c |
567 | sv_setnv(sv, PL_basetime); |
88e89b8a |
568 | #else |
3280af22 |
569 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a |
570 | #endif |
79072805 |
571 | break; |
572 | case '\027': /* ^W */ |
599cee73 |
573 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) == G_WARN_ON)); |
79072805 |
574 | break; |
575 | case '1': case '2': case '3': case '4': |
576 | case '5': case '6': case '7': case '8': case '9': case '&': |
3280af22 |
577 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
a863c7d1 |
578 | /* |
579 | * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj)); |
580 | * XXX Does the new way break anything? |
581 | */ |
582 | paren = atoi(mg->mg_ptr); |
79072805 |
583 | getparen: |
d9f97599 |
584 | if (paren <= rx->nparens && |
585 | (s = rx->startp[paren]) && |
586 | (t = rx->endp[paren])) |
bbce6d69 |
587 | { |
748a9306 |
588 | i = t - s; |
13f57bf8 |
589 | getrx: |
748a9306 |
590 | if (i >= 0) { |
13f57bf8 |
591 | bool was_tainted; |
3280af22 |
592 | if (PL_tainting) { |
593 | was_tainted = PL_tainted; |
594 | PL_tainted = FALSE; |
13f57bf8 |
595 | } |
79072805 |
596 | sv_setpvn(sv,s,i); |
3280af22 |
597 | if (PL_tainting) |
598 | PL_tainted = (was_tainted || RX_MATCH_TAINTED(rx)); |
748a9306 |
599 | break; |
600 | } |
79072805 |
601 | } |
79072805 |
602 | } |
3280af22 |
603 | sv_setsv(sv,&PL_sv_undef); |
79072805 |
604 | break; |
605 | case '+': |
3280af22 |
606 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
d9f97599 |
607 | paren = rx->lastparen; |
a0d0e21e |
608 | if (paren) |
609 | goto getparen; |
79072805 |
610 | } |
3280af22 |
611 | sv_setsv(sv,&PL_sv_undef); |
79072805 |
612 | break; |
613 | case '`': |
3280af22 |
614 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
d9f97599 |
615 | if ((s = rx->subbeg) && rx->startp[0]) { |
616 | i = rx->startp[0] - s; |
13f57bf8 |
617 | goto getrx; |
79072805 |
618 | } |
79072805 |
619 | } |
3280af22 |
620 | sv_setsv(sv,&PL_sv_undef); |
79072805 |
621 | break; |
622 | case '\'': |
3280af22 |
623 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
d9f97599 |
624 | if (rx->subend && (s = rx->endp[0])) { |
625 | i = rx->subend - s; |
13f57bf8 |
626 | goto getrx; |
79072805 |
627 | } |
79072805 |
628 | } |
3280af22 |
629 | sv_setsv(sv,&PL_sv_undef); |
79072805 |
630 | break; |
631 | case '.': |
632 | #ifndef lint |
3280af22 |
633 | if (GvIO(PL_last_in_gv)) { |
634 | sv_setiv(sv, (IV)IoLINES(GvIO(PL_last_in_gv))); |
79072805 |
635 | } |
636 | #endif |
637 | break; |
638 | case '?': |
809a5acc |
639 | { |
809a5acc |
640 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 |
641 | #ifdef COMPLEX_STATUS |
6b88bc9c |
642 | LvTARGOFF(sv) = PL_statusvalue; |
643 | LvTARGLEN(sv) = PL_statusvalue_vms; |
ff0cee69 |
644 | #endif |
809a5acc |
645 | } |
79072805 |
646 | break; |
647 | case '^': |
3280af22 |
648 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); |
79072805 |
649 | if (s) |
650 | sv_setpv(sv,s); |
651 | else { |
3280af22 |
652 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
79072805 |
653 | sv_catpv(sv,"_TOP"); |
654 | } |
655 | break; |
656 | case '~': |
3280af22 |
657 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); |
79072805 |
658 | if (!s) |
3280af22 |
659 | s = GvENAME(PL_defoutgv); |
79072805 |
660 | sv_setpv(sv,s); |
661 | break; |
662 | #ifndef lint |
663 | case '=': |
3280af22 |
664 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); |
79072805 |
665 | break; |
666 | case '-': |
3280af22 |
667 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); |
79072805 |
668 | break; |
669 | case '%': |
3280af22 |
670 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); |
79072805 |
671 | break; |
672 | #endif |
673 | case ':': |
674 | break; |
675 | case '/': |
676 | break; |
677 | case '[': |
3280af22 |
678 | WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase)); |
79072805 |
679 | break; |
680 | case '|': |
3280af22 |
681 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 |
682 | break; |
683 | case ',': |
3280af22 |
684 | sv_setpvn(sv,PL_ofs,PL_ofslen); |
79072805 |
685 | break; |
686 | case '\\': |
3280af22 |
687 | sv_setpvn(sv,PL_ors,PL_orslen); |
79072805 |
688 | break; |
689 | case '#': |
3280af22 |
690 | sv_setpv(sv,PL_ofmt); |
79072805 |
691 | break; |
692 | case '!': |
a5f75d66 |
693 | #ifdef VMS |
946ec16e |
694 | sv_setnv(sv, (double)((errno == EVMSERR) ? vaxc$errno : errno)); |
88e89b8a |
695 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
a5f75d66 |
696 | #else |
88e89b8a |
697 | { |
698 | int saveerrno = errno; |
946ec16e |
699 | sv_setnv(sv, (double)errno); |
88e89b8a |
700 | #ifdef OS2 |
701 | if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc)); |
702 | else |
a5f75d66 |
703 | #endif |
2304df62 |
704 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
88e89b8a |
705 | errno = saveerrno; |
706 | } |
707 | #endif |
946ec16e |
708 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 |
709 | break; |
710 | case '<': |
3280af22 |
711 | sv_setiv(sv, (IV)PL_uid); |
79072805 |
712 | break; |
713 | case '>': |
3280af22 |
714 | sv_setiv(sv, (IV)PL_euid); |
79072805 |
715 | break; |
716 | case '(': |
3280af22 |
717 | sv_setiv(sv, (IV)PL_gid); |
718 | sv_setpvf(sv, "%Vd", (IV)PL_gid); |
79072805 |
719 | goto add_groups; |
720 | case ')': |
3280af22 |
721 | sv_setiv(sv, (IV)PL_egid); |
722 | sv_setpvf(sv, "%Vd", (IV)PL_egid); |
79072805 |
723 | add_groups: |
79072805 |
724 | #ifdef HAS_GETGROUPS |
79072805 |
725 | { |
a0d0e21e |
726 | Groups_t gary[NGROUPS]; |
79072805 |
727 | i = getgroups(NGROUPS,gary); |
46fc3d4c |
728 | while (--i >= 0) |
fc36a67e |
729 | sv_catpvf(sv, " %Vd", (IV)gary[i]); |
79072805 |
730 | } |
731 | #endif |
29355cf7 |
732 | SvIOK_on(sv); /* what a wonderful hack! */ |
79072805 |
733 | break; |
734 | case '*': |
735 | break; |
736 | case '0': |
737 | break; |
a863c7d1 |
738 | #ifdef USE_THREADS |
739 | case '@': |
38a03e6e |
740 | sv_setsv(sv, thr->errsv); |
a863c7d1 |
741 | break; |
742 | #endif /* USE_THREADS */ |
79072805 |
743 | } |
a0d0e21e |
744 | return 0; |
79072805 |
745 | } |
746 | |
747 | int |
8ac85365 |
748 | magic_getuvar(SV *sv, MAGIC *mg) |
79072805 |
749 | { |
750 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; |
751 | |
752 | if (uf && uf->uf_val) |
753 | (*uf->uf_val)(uf->uf_index, sv); |
754 | return 0; |
755 | } |
756 | |
757 | int |
8ac85365 |
758 | magic_setenv(SV *sv, MAGIC *mg) |
79072805 |
759 | { |
760 | register char *s; |
88e89b8a |
761 | char *ptr; |
5aabfad6 |
762 | STRLEN len, klen; |
a0d0e21e |
763 | I32 i; |
1e422769 |
764 | |
a0d0e21e |
765 | s = SvPV(sv,len); |
5aabfad6 |
766 | ptr = MgPV(mg,klen); |
88e89b8a |
767 | my_setenv(ptr, s); |
1e422769 |
768 | |
a0d0e21e |
769 | #ifdef DYNAMIC_ENV_FETCH |
770 | /* We just undefd an environment var. Is a replacement */ |
771 | /* waiting in the wings? */ |
772 | if (!len) { |
5aabfad6 |
773 | SV **valp; |
6b88bc9c |
774 | if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE))) |
5aabfad6 |
775 | s = SvPV(*valp, len); |
a0d0e21e |
776 | } |
777 | #endif |
1e422769 |
778 | |
39e571d4 |
779 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 |
780 | /* And you'll never guess what the dog had */ |
781 | /* in its mouth... */ |
3280af22 |
782 | if (PL_tainting) { |
1e422769 |
783 | MgTAINTEDDIR_off(mg); |
784 | #ifdef VMS |
5aabfad6 |
785 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
1e422769 |
786 | char pathbuf[256], eltbuf[256], *cp, *elt = s; |
787 | struct stat sbuf; |
788 | int i = 0, j = 0; |
789 | |
790 | do { /* DCL$PATH may be a search list */ |
791 | while (1) { /* as may dev portion of any element */ |
792 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { |
793 | if ( *(cp+1) == '.' || *(cp+1) == '-' || |
794 | cando_by_name(S_IWUSR,0,elt) ) { |
795 | MgTAINTEDDIR_on(mg); |
796 | return 0; |
797 | } |
798 | } |
799 | if ((cp = strchr(elt, ':')) != Nullch) |
800 | *cp = '\0'; |
801 | if (my_trnlnm(elt, eltbuf, j++)) |
802 | elt = eltbuf; |
803 | else |
804 | break; |
805 | } |
806 | j = 0; |
807 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); |
808 | } |
809 | #endif /* VMS */ |
5aabfad6 |
810 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
a0d0e21e |
811 | char *strend = s + len; |
463ee0b2 |
812 | |
813 | while (s < strend) { |
96827780 |
814 | char tmpbuf[256]; |
1e422769 |
815 | struct stat st; |
96827780 |
816 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
fc36a67e |
817 | s, strend, ':', &i); |
463ee0b2 |
818 | s++; |
96827780 |
819 | if (i >= sizeof tmpbuf /* too long -- assume the worst */ |
820 | || *tmpbuf != '/' |
c6ed36e1 |
821 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 |
822 | MgTAINTEDDIR_on(mg); |
1e422769 |
823 | return 0; |
824 | } |
463ee0b2 |
825 | } |
79072805 |
826 | } |
827 | } |
39e571d4 |
828 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 |
829 | |
79072805 |
830 | return 0; |
831 | } |
832 | |
833 | int |
8ac85365 |
834 | magic_clearenv(SV *sv, MAGIC *mg) |
85e6fe83 |
835 | { |
3280af22 |
836 | my_setenv(MgPV(mg,PL_na),Nullch); |
85e6fe83 |
837 | return 0; |
838 | } |
839 | |
88e89b8a |
840 | int |
8ac85365 |
841 | magic_set_all_env(SV *sv, MAGIC *mg) |
fb73857a |
842 | { |
843 | #if defined(VMS) |
844 | die("Can't make list assignment to %%ENV on this system"); |
845 | #else |
d58bf5aa |
846 | dTHR; |
3280af22 |
847 | if (PL_localizing) { |
fb73857a |
848 | HE* entry; |
849 | magic_clear_all_env(sv,mg); |
850 | hv_iterinit((HV*)sv); |
851 | while (entry = hv_iternext((HV*)sv)) { |
852 | I32 keylen; |
853 | my_setenv(hv_iterkey(entry, &keylen), |
3280af22 |
854 | SvPV(hv_iterval((HV*)sv, entry), PL_na)); |
fb73857a |
855 | } |
856 | } |
857 | #endif |
858 | return 0; |
859 | } |
860 | |
861 | int |
8ac85365 |
862 | magic_clear_all_env(SV *sv, MAGIC *mg) |
66b1d557 |
863 | { |
3e3baf6d |
864 | #if defined(VMS) |
865 | die("Can't make list assignment to %%ENV on this system"); |
866 | #else |
867 | #ifdef WIN32 |
868 | char *envv = GetEnvironmentStrings(); |
869 | char *cur = envv; |
870 | STRLEN len; |
871 | while (*cur) { |
872 | char *end = strchr(cur,'='); |
873 | if (end && end != cur) { |
874 | *end = '\0'; |
875 | my_setenv(cur,Nullch); |
876 | *end = '='; |
877 | cur += strlen(end+1)+1; |
878 | } |
879 | else if ((len = strlen(cur))) |
880 | cur += len+1; |
881 | } |
882 | FreeEnvironmentStrings(envv); |
66b1d557 |
883 | #else |
884 | I32 i; |
885 | |
3280af22 |
886 | if (environ == PL_origenviron) |
66b1d557 |
887 | New(901, environ, 1, char*); |
888 | else |
889 | for (i = 0; environ[i]; i++) |
890 | Safefree(environ[i]); |
891 | environ[0] = Nullch; |
892 | |
66b1d557 |
893 | #endif |
3e3baf6d |
894 | #endif |
895 | return 0; |
66b1d557 |
896 | } |
897 | |
898 | int |
8ac85365 |
899 | magic_getsig(SV *sv, MAGIC *mg) |
88e89b8a |
900 | { |
901 | I32 i; |
902 | /* Are we fetching a signal entry? */ |
3280af22 |
903 | i = whichsig(MgPV(mg,PL_na)); |
88e89b8a |
904 | if (i) { |
905 | if(psig_ptr[i]) |
906 | sv_setsv(sv,psig_ptr[i]); |
907 | else { |
ff68c719 |
908 | Sighandler_t sigstate = rsignal_state(i); |
909 | |
88e89b8a |
910 | /* cache state so we don't fetch it again */ |
ff68c719 |
911 | if(sigstate == SIG_IGN) |
88e89b8a |
912 | sv_setpv(sv,"IGNORE"); |
913 | else |
3280af22 |
914 | sv_setsv(sv,&PL_sv_undef); |
88e89b8a |
915 | psig_ptr[i] = SvREFCNT_inc(sv); |
916 | SvTEMP_off(sv); |
917 | } |
918 | } |
919 | return 0; |
920 | } |
921 | int |
8ac85365 |
922 | magic_clearsig(SV *sv, MAGIC *mg) |
88e89b8a |
923 | { |
924 | I32 i; |
925 | /* Are we clearing a signal entry? */ |
3280af22 |
926 | i = whichsig(MgPV(mg,PL_na)); |
88e89b8a |
927 | if (i) { |
928 | if(psig_ptr[i]) { |
929 | SvREFCNT_dec(psig_ptr[i]); |
930 | psig_ptr[i]=0; |
931 | } |
932 | if(psig_name[i]) { |
933 | SvREFCNT_dec(psig_name[i]); |
934 | psig_name[i]=0; |
935 | } |
936 | } |
937 | return 0; |
938 | } |
3d37d572 |
939 | |
85e6fe83 |
940 | int |
8ac85365 |
941 | magic_setsig(SV *sv, MAGIC *mg) |
79072805 |
942 | { |
11343788 |
943 | dTHR; |
79072805 |
944 | register char *s; |
945 | I32 i; |
748a9306 |
946 | SV** svp; |
a0d0e21e |
947 | |
3280af22 |
948 | s = MgPV(mg,PL_na); |
748a9306 |
949 | if (*s == '_') { |
950 | if (strEQ(s,"__DIE__")) |
3280af22 |
951 | svp = &PL_diehook; |
748a9306 |
952 | else if (strEQ(s,"__WARN__")) |
3280af22 |
953 | svp = &PL_warnhook; |
748a9306 |
954 | else if (strEQ(s,"__PARSE__")) |
3280af22 |
955 | svp = &PL_parsehook; |
748a9306 |
956 | else |
957 | croak("No such hook: %s", s); |
958 | i = 0; |
4633a7c4 |
959 | if (*svp) { |
960 | SvREFCNT_dec(*svp); |
961 | *svp = 0; |
962 | } |
748a9306 |
963 | } |
964 | else { |
965 | i = whichsig(s); /* ...no, a brick */ |
966 | if (!i) { |
599cee73 |
967 | if (ckWARN(WARN_SIGNAL) || strEQ(s,"ALARM")) |
968 | warner(WARN_SIGNAL, "No such signal: SIG%s", s); |
748a9306 |
969 | return 0; |
970 | } |
ff0cee69 |
971 | SvREFCNT_dec(psig_name[i]); |
972 | SvREFCNT_dec(psig_ptr[i]); |
88e89b8a |
973 | psig_ptr[i] = SvREFCNT_inc(sv); |
88e89b8a |
974 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ |
ff0cee69 |
975 | psig_name[i] = newSVpv(s, strlen(s)); |
88e89b8a |
976 | SvREADONLY_on(psig_name[i]); |
748a9306 |
977 | } |
a0d0e21e |
978 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
748a9306 |
979 | if (i) |
3280af22 |
980 | (void)rsignal(i, PL_sighandlerp); |
748a9306 |
981 | else |
982 | *svp = SvREFCNT_inc(sv); |
a0d0e21e |
983 | return 0; |
984 | } |
3280af22 |
985 | s = SvPV_force(sv,PL_na); |
748a9306 |
986 | if (strEQ(s,"IGNORE")) { |
987 | if (i) |
ff68c719 |
988 | (void)rsignal(i, SIG_IGN); |
748a9306 |
989 | else |
990 | *svp = 0; |
991 | } |
992 | else if (strEQ(s,"DEFAULT") || !*s) { |
993 | if (i) |
ff68c719 |
994 | (void)rsignal(i, SIG_DFL); |
748a9306 |
995 | else |
996 | *svp = 0; |
997 | } |
79072805 |
998 | else { |
5aabfad6 |
999 | /* |
1000 | * We should warn if HINT_STRICT_REFS, but without |
1001 | * access to a known hint bit in a known OP, we can't |
1002 | * tell whether HINT_STRICT_REFS is in force or not. |
1003 | */ |
46fc3d4c |
1004 | if (!strchr(s,':') && !strchr(s,'\'')) |
1005 | sv_setpv(sv, form("main::%s", s)); |
748a9306 |
1006 | if (i) |
3280af22 |
1007 | (void)rsignal(i, PL_sighandlerp); |
748a9306 |
1008 | else |
1009 | *svp = SvREFCNT_inc(sv); |
79072805 |
1010 | } |
1011 | return 0; |
1012 | } |
1013 | |
1014 | int |
8ac85365 |
1015 | magic_setisa(SV *sv, MAGIC *mg) |
79072805 |
1016 | { |
3280af22 |
1017 | PL_sub_generation++; |
463ee0b2 |
1018 | return 0; |
1019 | } |
1020 | |
a0d0e21e |
1021 | #ifdef OVERLOAD |
1022 | |
463ee0b2 |
1023 | int |
8ac85365 |
1024 | magic_setamagic(SV *sv, MAGIC *mg) |
463ee0b2 |
1025 | { |
a0d0e21e |
1026 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
3280af22 |
1027 | PL_amagic_generation++; |
463ee0b2 |
1028 | |
a0d0e21e |
1029 | return 0; |
1030 | } |
1031 | #endif /* OVERLOAD */ |
463ee0b2 |
1032 | |
946ec16e |
1033 | int |
6ff81951 |
1034 | magic_getnkeys(SV *sv, MAGIC *mg) |
1035 | { |
1036 | HV *hv = (HV*)LvTARG(sv); |
1037 | HE *entry; |
1038 | I32 i = 0; |
1039 | |
1040 | if (hv) { |
1041 | (void) hv_iterinit(hv); |
1042 | if (!SvRMAGICAL(hv) || !mg_find((SV*)hv,'P')) |
1043 | i = HvKEYS(hv); |
1044 | else { |
1045 | /*SUPPRESS 560*/ |
1046 | while (entry = hv_iternext(hv)) { |
1047 | i++; |
1048 | } |
1049 | } |
1050 | } |
1051 | |
1052 | sv_setiv(sv, (IV)i); |
1053 | return 0; |
1054 | } |
1055 | |
1056 | int |
8ac85365 |
1057 | magic_setnkeys(SV *sv, MAGIC *mg) |
946ec16e |
1058 | { |
1059 | if (LvTARG(sv)) { |
1060 | hv_ksplit((HV*)LvTARG(sv), SvIV(sv)); |
946ec16e |
1061 | } |
1062 | return 0; |
93965878 |
1063 | } |
946ec16e |
1064 | |
e336de0d |
1065 | /* caller is responsible for stack switching/cleanup */ |
565764a8 |
1066 | STATIC int |
93965878 |
1067 | magic_methcall(MAGIC *mg, char *meth, I32 flags, int n, SV *val) |
a0d0e21e |
1068 | { |
1069 | dSP; |
463ee0b2 |
1070 | |
924508f0 |
1071 | PUSHMARK(SP); |
1072 | EXTEND(SP, n); |
a0d0e21e |
1073 | PUSHs(mg->mg_obj); |
93965878 |
1074 | if (n > 1) { |
1075 | if (mg->mg_ptr) { |
565764a8 |
1076 | if (mg->mg_len >= 0) |
1077 | PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len))); |
1078 | else if (mg->mg_len == HEf_SVKEY) |
93965878 |
1079 | PUSHs((SV*)mg->mg_ptr); |
1080 | } |
1081 | else if (mg->mg_type == 'p') { |
565764a8 |
1082 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); |
93965878 |
1083 | } |
1084 | } |
1085 | if (n > 2) { |
1086 | PUSHs(val); |
88e89b8a |
1087 | } |
463ee0b2 |
1088 | PUTBACK; |
1089 | |
93965878 |
1090 | return perl_call_method(meth, flags); |
946ec16e |
1091 | } |
1092 | |
76e3520e |
1093 | STATIC int |
8ac85365 |
1094 | magic_methpack(SV *sv, MAGIC *mg, char *meth) |
a0d0e21e |
1095 | { |
1096 | dSP; |
463ee0b2 |
1097 | |
a0d0e21e |
1098 | ENTER; |
1099 | SAVETMPS; |
e788e7d3 |
1100 | PUSHSTACKi(PERLSI_MAGIC); |
463ee0b2 |
1101 | |
93965878 |
1102 | if (magic_methcall(mg, meth, G_SCALAR, 2, NULL)) { |
3280af22 |
1103 | sv_setsv(sv, *PL_stack_sp--); |
93965878 |
1104 | } |
463ee0b2 |
1105 | |
d3acc0f7 |
1106 | POPSTACK; |
a0d0e21e |
1107 | FREETMPS; |
1108 | LEAVE; |
1109 | return 0; |
1110 | } |
463ee0b2 |
1111 | |
a0d0e21e |
1112 | int |
8ac85365 |
1113 | magic_getpack(SV *sv, MAGIC *mg) |
a0d0e21e |
1114 | { |
1115 | magic_methpack(sv,mg,"FETCH"); |
1116 | if (mg->mg_ptr) |
1117 | mg->mg_flags |= MGf_GSKIP; |
463ee0b2 |
1118 | return 0; |
1119 | } |
1120 | |
1121 | int |
8ac85365 |
1122 | magic_setpack(SV *sv, MAGIC *mg) |
e336de0d |
1123 | { |
1124 | dSP; |
a60c0954 |
1125 | ENTER; |
e788e7d3 |
1126 | PUSHSTACKi(PERLSI_MAGIC); |
93965878 |
1127 | magic_methcall(mg, "STORE", G_SCALAR|G_DISCARD, 3, sv); |
d3acc0f7 |
1128 | POPSTACK; |
a60c0954 |
1129 | LEAVE; |
463ee0b2 |
1130 | return 0; |
1131 | } |
1132 | |
1133 | int |
8ac85365 |
1134 | magic_clearpack(SV *sv, MAGIC *mg) |
463ee0b2 |
1135 | { |
a0d0e21e |
1136 | return magic_methpack(sv,mg,"DELETE"); |
1137 | } |
463ee0b2 |
1138 | |
93965878 |
1139 | |
1140 | U32 |
1141 | magic_sizepack(SV *sv, MAGIC *mg) |
1142 | { |
e336de0d |
1143 | dSP; |
93965878 |
1144 | U32 retval = 0; |
1145 | |
1146 | ENTER; |
1147 | SAVETMPS; |
e788e7d3 |
1148 | PUSHSTACKi(PERLSI_MAGIC); |
93965878 |
1149 | if (magic_methcall(mg, "FETCHSIZE", G_SCALAR, 2, NULL)) { |
3280af22 |
1150 | sv = *PL_stack_sp--; |
a60c0954 |
1151 | retval = (U32) SvIV(sv)-1; |
93965878 |
1152 | } |
d3acc0f7 |
1153 | POPSTACK; |
93965878 |
1154 | FREETMPS; |
1155 | LEAVE; |
1156 | return retval; |
1157 | } |
1158 | |
8ac85365 |
1159 | int magic_wipepack(SV *sv, MAGIC *mg) |
a0d0e21e |
1160 | { |
1161 | dSP; |
463ee0b2 |
1162 | |
e336de0d |
1163 | ENTER; |
e788e7d3 |
1164 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 |
1165 | PUSHMARK(SP); |
a0d0e21e |
1166 | XPUSHs(mg->mg_obj); |
463ee0b2 |
1167 | PUTBACK; |
a0d0e21e |
1168 | perl_call_method("CLEAR", G_SCALAR|G_DISCARD); |
d3acc0f7 |
1169 | POPSTACK; |
a60c0954 |
1170 | LEAVE; |
463ee0b2 |
1171 | return 0; |
1172 | } |
1173 | |
1174 | int |
8ac85365 |
1175 | magic_nextpack(SV *sv, MAGIC *mg, SV *key) |
463ee0b2 |
1176 | { |
463ee0b2 |
1177 | dSP; |
a0d0e21e |
1178 | char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 |
1179 | |
1180 | ENTER; |
a0d0e21e |
1181 | SAVETMPS; |
e788e7d3 |
1182 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 |
1183 | PUSHMARK(SP); |
1184 | EXTEND(SP, 2); |
a0d0e21e |
1185 | PUSHs(mg->mg_obj); |
463ee0b2 |
1186 | if (SvOK(key)) |
1187 | PUSHs(key); |
1188 | PUTBACK; |
1189 | |
a0d0e21e |
1190 | if (perl_call_method(meth, G_SCALAR)) |
3280af22 |
1191 | sv_setsv(key, *PL_stack_sp--); |
463ee0b2 |
1192 | |
d3acc0f7 |
1193 | POPSTACK; |
a0d0e21e |
1194 | FREETMPS; |
1195 | LEAVE; |
79072805 |
1196 | return 0; |
1197 | } |
1198 | |
1199 | int |
8ac85365 |
1200 | magic_existspack(SV *sv, MAGIC *mg) |
a0d0e21e |
1201 | { |
1202 | return magic_methpack(sv,mg,"EXISTS"); |
1203 | } |
1204 | |
1205 | int |
8ac85365 |
1206 | magic_setdbline(SV *sv, MAGIC *mg) |
79072805 |
1207 | { |
11343788 |
1208 | dTHR; |
79072805 |
1209 | OP *o; |
1210 | I32 i; |
1211 | GV* gv; |
1212 | SV** svp; |
1213 | |
3280af22 |
1214 | gv = PL_DBline; |
79072805 |
1215 | i = SvTRUE(sv); |
188ea221 |
1216 | svp = av_fetch(GvAV(gv), |
3280af22 |
1217 | atoi(MgPV(mg,PL_na)), FALSE); |
8990e307 |
1218 | if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp))) |
93a17b20 |
1219 | o->op_private = i; |
79072805 |
1220 | else |
1221 | warn("Can't break at that line\n"); |
1222 | return 0; |
1223 | } |
1224 | |
1225 | int |
8ac85365 |
1226 | magic_getarylen(SV *sv, MAGIC *mg) |
79072805 |
1227 | { |
0f15f207 |
1228 | dTHR; |
3280af22 |
1229 | sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase); |
79072805 |
1230 | return 0; |
1231 | } |
1232 | |
1233 | int |
8ac85365 |
1234 | magic_setarylen(SV *sv, MAGIC *mg) |
79072805 |
1235 | { |
0f15f207 |
1236 | dTHR; |
3280af22 |
1237 | av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase); |
a0d0e21e |
1238 | return 0; |
1239 | } |
1240 | |
1241 | int |
8ac85365 |
1242 | magic_getpos(SV *sv, MAGIC *mg) |
a0d0e21e |
1243 | { |
1244 | SV* lsv = LvTARG(sv); |
1245 | |
1246 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
1247 | mg = mg_find(lsv, 'g'); |
565764a8 |
1248 | if (mg && mg->mg_len >= 0) { |
0f15f207 |
1249 | dTHR; |
a0ed51b3 |
1250 | I32 i = mg->mg_len; |
1251 | if (IN_UTF8) |
1252 | sv_pos_b2u(lsv, &i); |
1253 | sv_setiv(sv, i + PL_curcop->cop_arybase); |
a0d0e21e |
1254 | return 0; |
1255 | } |
1256 | } |
1257 | (void)SvOK_off(sv); |
1258 | return 0; |
1259 | } |
1260 | |
1261 | int |
8ac85365 |
1262 | magic_setpos(SV *sv, MAGIC *mg) |
a0d0e21e |
1263 | { |
1264 | SV* lsv = LvTARG(sv); |
1265 | SSize_t pos; |
1266 | STRLEN len; |
a0ed51b3 |
1267 | STRLEN ulen; |
c485e607 |
1268 | dTHR; |
a0d0e21e |
1269 | |
1270 | mg = 0; |
1271 | |
1272 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
1273 | mg = mg_find(lsv, 'g'); |
1274 | if (!mg) { |
1275 | if (!SvOK(sv)) |
1276 | return 0; |
1277 | sv_magic(lsv, (SV*)0, 'g', Nullch, 0); |
1278 | mg = mg_find(lsv, 'g'); |
1279 | } |
1280 | else if (!SvOK(sv)) { |
565764a8 |
1281 | mg->mg_len = -1; |
a0d0e21e |
1282 | return 0; |
1283 | } |
1284 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); |
1285 | |
c485e607 |
1286 | pos = SvIV(sv) - PL_curcop->cop_arybase; |
a0ed51b3 |
1287 | |
1288 | if (IN_UTF8) { |
1289 | ulen = sv_len_utf8(lsv); |
1290 | if (ulen) |
1291 | len = ulen; |
1292 | else |
1293 | ulen = 0; |
1294 | } |
1295 | |
a0d0e21e |
1296 | if (pos < 0) { |
1297 | pos += len; |
1298 | if (pos < 0) |
1299 | pos = 0; |
1300 | } |
1301 | else if (pos > len) |
1302 | pos = len; |
a0ed51b3 |
1303 | |
1304 | if (ulen) { |
1305 | I32 p = pos; |
1306 | sv_pos_u2b(lsv, &p, 0); |
1307 | pos = p; |
1308 | } |
1309 | |
565764a8 |
1310 | mg->mg_len = pos; |
71be2cbc |
1311 | mg->mg_flags &= ~MGf_MINMATCH; |
a0d0e21e |
1312 | |
79072805 |
1313 | return 0; |
1314 | } |
1315 | |
1316 | int |
8ac85365 |
1317 | magic_getglob(SV *sv, MAGIC *mg) |
79072805 |
1318 | { |
8646b087 |
1319 | if (SvFAKE(sv)) { /* FAKE globs can get coerced */ |
1320 | SvFAKE_off(sv); |
946ec16e |
1321 | gv_efullname3(sv,((GV*)sv), "*"); |
8646b087 |
1322 | SvFAKE_on(sv); |
1323 | } |
1324 | else |
946ec16e |
1325 | gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */ |
79072805 |
1326 | return 0; |
1327 | } |
1328 | |
1329 | int |
8ac85365 |
1330 | magic_setglob(SV *sv, MAGIC *mg) |
79072805 |
1331 | { |
1332 | register char *s; |
1333 | GV* gv; |
1334 | |
1335 | if (!SvOK(sv)) |
1336 | return 0; |
3280af22 |
1337 | s = SvPV(sv, PL_na); |
79072805 |
1338 | if (*s == '*' && s[1]) |
1339 | s++; |
85e6fe83 |
1340 | gv = gv_fetchpv(s,TRUE, SVt_PVGV); |
79072805 |
1341 | if (sv == (SV*)gv) |
1342 | return 0; |
1343 | if (GvGP(sv)) |
88e89b8a |
1344 | gp_free((GV*)sv); |
79072805 |
1345 | GvGP(sv) = gp_ref(GvGP(gv)); |
79072805 |
1346 | return 0; |
1347 | } |
1348 | |
1349 | int |
6ff81951 |
1350 | magic_getsubstr(SV *sv, MAGIC *mg) |
1351 | { |
1352 | STRLEN len; |
1353 | SV *lsv = LvTARG(sv); |
1354 | char *tmps = SvPV(lsv,len); |
1355 | I32 offs = LvTARGOFF(sv); |
1356 | I32 rem = LvTARGLEN(sv); |
1357 | |
1358 | if (offs > len) |
1359 | offs = len; |
1360 | if (rem + offs > len) |
1361 | rem = len - offs; |
1362 | sv_setpvn(sv, tmps + offs, (STRLEN)rem); |
1363 | return 0; |
1364 | } |
1365 | |
1366 | int |
8ac85365 |
1367 | magic_setsubstr(SV *sv, MAGIC *mg) |
79072805 |
1368 | { |
8990e307 |
1369 | STRLEN len; |
1370 | char *tmps = SvPV(sv,len); |
1371 | sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len); |
79072805 |
1372 | return 0; |
1373 | } |
1374 | |
1375 | int |
8ac85365 |
1376 | magic_gettaint(SV *sv, MAGIC *mg) |
463ee0b2 |
1377 | { |
a863c7d1 |
1378 | dTHR; |
565764a8 |
1379 | TAINT_IF((mg->mg_len & 1) || |
1380 | (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */ |
463ee0b2 |
1381 | return 0; |
1382 | } |
1383 | |
1384 | int |
8ac85365 |
1385 | magic_settaint(SV *sv, MAGIC *mg) |
463ee0b2 |
1386 | { |
11343788 |
1387 | dTHR; |
3280af22 |
1388 | if (PL_localizing) { |
1389 | if (PL_localizing == 1) |
565764a8 |
1390 | mg->mg_len <<= 1; |
748a9306 |
1391 | else |
565764a8 |
1392 | mg->mg_len >>= 1; |
a0d0e21e |
1393 | } |
3280af22 |
1394 | else if (PL_tainted) |
565764a8 |
1395 | mg->mg_len |= 1; |
748a9306 |
1396 | else |
565764a8 |
1397 | mg->mg_len &= ~1; |
463ee0b2 |
1398 | return 0; |
1399 | } |
1400 | |
1401 | int |
6ff81951 |
1402 | magic_getvec(SV *sv, MAGIC *mg) |
1403 | { |
1404 | SV *lsv = LvTARG(sv); |
1405 | unsigned char *s; |
1406 | unsigned long retnum; |
1407 | STRLEN lsvlen; |
1408 | I32 len; |
1409 | I32 offset; |
1410 | I32 size; |
1411 | |
1412 | if (!lsv) { |
1413 | SvOK_off(sv); |
1414 | return 0; |
1415 | } |
1416 | s = (unsigned char *) SvPV(lsv, lsvlen); |
1417 | offset = LvTARGOFF(sv); |
1418 | size = LvTARGLEN(sv); |
1419 | len = (offset + size + 7) / 8; |
1420 | |
1421 | /* Copied from pp_vec() */ |
1422 | |
1423 | if (len > lsvlen) { |
1424 | if (size <= 8) |
1425 | retnum = 0; |
1426 | else { |
1427 | offset >>= 3; |
1428 | if (size == 16) { |
1429 | if (offset >= lsvlen) |
1430 | retnum = 0; |
1431 | else |
1432 | retnum = (unsigned long) s[offset] << 8; |
1433 | } |
1434 | else if (size == 32) { |
1435 | if (offset >= lsvlen) |
1436 | retnum = 0; |
1437 | else if (offset + 1 >= lsvlen) |
1438 | retnum = (unsigned long) s[offset] << 24; |
1439 | else if (offset + 2 >= lsvlen) |
1440 | retnum = ((unsigned long) s[offset] << 24) + |
1441 | ((unsigned long) s[offset + 1] << 16); |
1442 | else |
1443 | retnum = ((unsigned long) s[offset] << 24) + |
1444 | ((unsigned long) s[offset + 1] << 16) + |
1445 | (s[offset + 2] << 8); |
1446 | } |
1447 | } |
1448 | } |
1449 | else if (size < 8) |
1450 | retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1); |
1451 | else { |
1452 | offset >>= 3; |
1453 | if (size == 8) |
1454 | retnum = s[offset]; |
1455 | else if (size == 16) |
1456 | retnum = ((unsigned long) s[offset] << 8) + s[offset+1]; |
1457 | else if (size == 32) |
1458 | retnum = ((unsigned long) s[offset] << 24) + |
1459 | ((unsigned long) s[offset + 1] << 16) + |
1460 | (s[offset + 2] << 8) + s[offset+3]; |
1461 | } |
1462 | |
1463 | sv_setuv(sv, (UV)retnum); |
1464 | return 0; |
1465 | } |
1466 | |
1467 | int |
8ac85365 |
1468 | magic_setvec(SV *sv, MAGIC *mg) |
79072805 |
1469 | { |
1470 | do_vecset(sv); /* XXX slurp this routine */ |
1471 | return 0; |
1472 | } |
1473 | |
1474 | int |
8ac85365 |
1475 | magic_getdefelem(SV *sv, MAGIC *mg) |
5f05dabc |
1476 | { |
71be2cbc |
1477 | SV *targ = Nullsv; |
5f05dabc |
1478 | if (LvTARGLEN(sv)) { |
68dc0745 |
1479 | if (mg->mg_obj) { |
74e13ce4 |
1480 | SV *ahv = LvTARG(sv); |
1481 | if (SvTYPE(ahv) == SVt_PVHV) { |
1482 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0); |
1483 | if (he) |
1484 | targ = HeVAL(he); |
1485 | } |
1486 | else { |
1487 | SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, FALSE, 0); |
1488 | if (svp) |
1489 | targ = *svp; |
1490 | } |
68dc0745 |
1491 | } |
1492 | else { |
3c78fafa |
1493 | AV* av = (AV*)LvTARG(sv); |
68dc0745 |
1494 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
1495 | targ = AvARRAY(av)[LvTARGOFF(sv)]; |
1496 | } |
3280af22 |
1497 | if (targ && targ != &PL_sv_undef) { |
e858de61 |
1498 | dTHR; /* just for SvREFCNT_dec */ |
68dc0745 |
1499 | /* somebody else defined it for us */ |
1500 | SvREFCNT_dec(LvTARG(sv)); |
1501 | LvTARG(sv) = SvREFCNT_inc(targ); |
1502 | LvTARGLEN(sv) = 0; |
1503 | SvREFCNT_dec(mg->mg_obj); |
1504 | mg->mg_obj = Nullsv; |
1505 | mg->mg_flags &= ~MGf_REFCOUNTED; |
1506 | } |
5f05dabc |
1507 | } |
71be2cbc |
1508 | else |
1509 | targ = LvTARG(sv); |
3280af22 |
1510 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc |
1511 | return 0; |
1512 | } |
1513 | |
1514 | int |
8ac85365 |
1515 | magic_setdefelem(SV *sv, MAGIC *mg) |
71be2cbc |
1516 | { |
1517 | if (LvTARGLEN(sv)) |
68dc0745 |
1518 | vivify_defelem(sv); |
1519 | if (LvTARG(sv)) { |
5f05dabc |
1520 | sv_setsv(LvTARG(sv), sv); |
68dc0745 |
1521 | SvSETMAGIC(LvTARG(sv)); |
1522 | } |
5f05dabc |
1523 | return 0; |
1524 | } |
1525 | |
71be2cbc |
1526 | void |
8ac85365 |
1527 | vivify_defelem(SV *sv) |
71be2cbc |
1528 | { |
e858de61 |
1529 | dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/ |
74e13ce4 |
1530 | MAGIC *mg; |
1531 | SV *value = Nullsv; |
71be2cbc |
1532 | |
68dc0745 |
1533 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y'))) |
71be2cbc |
1534 | return; |
68dc0745 |
1535 | if (mg->mg_obj) { |
74e13ce4 |
1536 | SV *ahv = LvTARG(sv); |
1537 | if (SvTYPE(ahv) == SVt_PVHV) { |
af7f9c15 |
1538 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0); |
74e13ce4 |
1539 | if (he) |
1540 | value = HeVAL(he); |
1541 | } |
1542 | else { |
af7f9c15 |
1543 | SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, TRUE, 0); |
74e13ce4 |
1544 | if (svp) |
1545 | value = *svp; |
1546 | } |
3280af22 |
1547 | if (!value || value == &PL_sv_undef) |
1548 | croak(no_helem, SvPV(mg->mg_obj, PL_na)); |
71be2cbc |
1549 | } |
68dc0745 |
1550 | else { |
1551 | AV* av = (AV*)LvTARG(sv); |
5aabfad6 |
1552 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
68dc0745 |
1553 | LvTARG(sv) = Nullsv; /* array can't be extended */ |
1554 | else { |
1555 | SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE); |
3280af22 |
1556 | if (!svp || (value = *svp) == &PL_sv_undef) |
68dc0745 |
1557 | croak(no_aelem, (I32)LvTARGOFF(sv)); |
1558 | } |
1559 | } |
3e3baf6d |
1560 | (void)SvREFCNT_inc(value); |
68dc0745 |
1561 | SvREFCNT_dec(LvTARG(sv)); |
1562 | LvTARG(sv) = value; |
71be2cbc |
1563 | LvTARGLEN(sv) = 0; |
68dc0745 |
1564 | SvREFCNT_dec(mg->mg_obj); |
1565 | mg->mg_obj = Nullsv; |
1566 | mg->mg_flags &= ~MGf_REFCOUNTED; |
5f05dabc |
1567 | } |
1568 | |
1569 | int |
8ac85365 |
1570 | magic_setmglob(SV *sv, MAGIC *mg) |
93a17b20 |
1571 | { |
565764a8 |
1572 | mg->mg_len = -1; |
c6496cc7 |
1573 | SvSCREAM_off(sv); |
93a17b20 |
1574 | return 0; |
1575 | } |
1576 | |
1577 | int |
8ac85365 |
1578 | magic_setbm(SV *sv, MAGIC *mg) |
79072805 |
1579 | { |
463ee0b2 |
1580 | sv_unmagic(sv, 'B'); |
79072805 |
1581 | SvVALID_off(sv); |
1582 | return 0; |
1583 | } |
1584 | |
1585 | int |
8ac85365 |
1586 | magic_setfm(SV *sv, MAGIC *mg) |
55497cff |
1587 | { |
1588 | sv_unmagic(sv, 'f'); |
1589 | SvCOMPILED_off(sv); |
1590 | return 0; |
1591 | } |
1592 | |
1593 | int |
8ac85365 |
1594 | magic_setuvar(SV *sv, MAGIC *mg) |
79072805 |
1595 | { |
1596 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; |
1597 | |
1598 | if (uf && uf->uf_set) |
1599 | (*uf->uf_set)(uf->uf_index, sv); |
1600 | return 0; |
1601 | } |
1602 | |
c277df42 |
1603 | int |
1604 | magic_freeregexp(SV *sv, MAGIC *mg) |
1605 | { |
1606 | regexp *re = (regexp *)mg->mg_obj; |
1607 | ReREFCNT_dec(re); |
1608 | return 0; |
1609 | } |
1610 | |
7a4c00b4 |
1611 | #ifdef USE_LOCALE_COLLATE |
79072805 |
1612 | int |
8ac85365 |
1613 | magic_setcollxfrm(SV *sv, MAGIC *mg) |
bbce6d69 |
1614 | { |
1615 | /* |
1616 | * René Descartes said "I think not." |
1617 | * and vanished with a faint plop. |
1618 | */ |
7a4c00b4 |
1619 | if (mg->mg_ptr) { |
1620 | Safefree(mg->mg_ptr); |
1621 | mg->mg_ptr = NULL; |
565764a8 |
1622 | mg->mg_len = -1; |
7a4c00b4 |
1623 | } |
bbce6d69 |
1624 | return 0; |
1625 | } |
7a4c00b4 |
1626 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 |
1627 | |
1628 | int |
8ac85365 |
1629 | magic_set(SV *sv, MAGIC *mg) |
79072805 |
1630 | { |
11343788 |
1631 | dTHR; |
79072805 |
1632 | register char *s; |
1633 | I32 i; |
8990e307 |
1634 | STRLEN len; |
79072805 |
1635 | switch (*mg->mg_ptr) { |
748a9306 |
1636 | case '\001': /* ^A */ |
3280af22 |
1637 | sv_setsv(PL_bodytarget, sv); |
748a9306 |
1638 | break; |
599cee73 |
1639 | case '\002': /* ^B */ |
1640 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
1641 | if (memEQ(SvPVX(sv), WARN_ALLstring, WARNsize)) |
e24b16f9 |
1642 | PL_compiling.cop_warnings = WARN_ALL; |
599cee73 |
1643 | else if (memEQ(SvPVX(sv), WARN_NONEstring, WARNsize)) |
e24b16f9 |
1644 | PL_compiling.cop_warnings = WARN_NONE; |
599cee73 |
1645 | else { |
e24b16f9 |
1646 | if (PL_compiling.cop_warnings != WARN_NONE && |
1647 | PL_compiling.cop_warnings != WARN_ALL) |
1648 | sv_setsv(PL_compiling.cop_warnings, sv); |
599cee73 |
1649 | else |
e24b16f9 |
1650 | PL_compiling.cop_warnings = newSVsv(sv) ; |
599cee73 |
1651 | } |
1652 | } |
1653 | break; |
79072805 |
1654 | case '\004': /* ^D */ |
3280af22 |
1655 | PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000; |
79072805 |
1656 | DEBUG_x(dump_all()); |
1657 | break; |
28f23441 |
1658 | case '\005': /* ^E */ |
1659 | #ifdef VMS |
1660 | set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
1661 | #else |
22fae026 |
1662 | #ifdef WIN32 |
1663 | SetLastError( SvIV(sv) ); |
1664 | #else |
f86702cc |
1665 | /* will anyone ever use this? */ |
1666 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4); |
28f23441 |
1667 | #endif |
22fae026 |
1668 | #endif |
28f23441 |
1669 | break; |
79072805 |
1670 | case '\006': /* ^F */ |
3280af22 |
1671 | PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1672 | break; |
a0d0e21e |
1673 | case '\010': /* ^H */ |
3280af22 |
1674 | PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
a0d0e21e |
1675 | break; |
9d116dd7 |
1676 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 |
1677 | if (PL_inplace) |
1678 | Safefree(PL_inplace); |
79072805 |
1679 | if (SvOK(sv)) |
3280af22 |
1680 | PL_inplace = savepv(SvPV(sv,PL_na)); |
79072805 |
1681 | else |
3280af22 |
1682 | PL_inplace = Nullch; |
79072805 |
1683 | break; |
28f23441 |
1684 | case '\017': /* ^O */ |
3280af22 |
1685 | if (PL_osname) |
1686 | Safefree(PL_osname); |
28f23441 |
1687 | if (SvOK(sv)) |
3280af22 |
1688 | PL_osname = savepv(SvPV(sv,PL_na)); |
28f23441 |
1689 | else |
3280af22 |
1690 | PL_osname = Nullch; |
28f23441 |
1691 | break; |
79072805 |
1692 | case '\020': /* ^P */ |
3280af22 |
1693 | PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1694 | break; |
1695 | case '\024': /* ^T */ |
88e89b8a |
1696 | #ifdef BIG_TIME |
6b88bc9c |
1697 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a |
1698 | #else |
3280af22 |
1699 | PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
88e89b8a |
1700 | #endif |
79072805 |
1701 | break; |
1702 | case '\027': /* ^W */ |
599cee73 |
1703 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
1704 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1705 | PL_dowarn = (i ? G_WARN_ON : G_WARN_OFF) ; |
1706 | } |
79072805 |
1707 | break; |
1708 | case '.': |
3280af22 |
1709 | if (PL_localizing) { |
1710 | if (PL_localizing == 1) |
1711 | save_sptr((SV**)&PL_last_in_gv); |
748a9306 |
1712 | } |
3280af22 |
1713 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
1714 | IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv); |
79072805 |
1715 | break; |
1716 | case '^': |
3280af22 |
1717 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
1718 | IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,PL_na)); |
1719 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 |
1720 | break; |
1721 | case '~': |
3280af22 |
1722 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
1723 | IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,PL_na)); |
1724 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 |
1725 | break; |
1726 | case '=': |
3280af22 |
1727 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 |
1728 | break; |
1729 | case '-': |
3280af22 |
1730 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
1731 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) |
1732 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; |
79072805 |
1733 | break; |
1734 | case '%': |
3280af22 |
1735 | IoPAGE(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 |
1736 | break; |
1737 | case '|': |
4b65379b |
1738 | { |
3280af22 |
1739 | IO *io = GvIOp(PL_defoutgv); |
4b65379b |
1740 | if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0) |
1741 | IoFLAGS(io) &= ~IOf_FLUSH; |
1742 | else { |
1743 | if (!(IoFLAGS(io) & IOf_FLUSH)) { |
1744 | PerlIO *ofp = IoOFP(io); |
1745 | if (ofp) |
1746 | (void)PerlIO_flush(ofp); |
1747 | IoFLAGS(io) |= IOf_FLUSH; |
1748 | } |
1749 | } |
79072805 |
1750 | } |
1751 | break; |
1752 | case '*': |
463ee0b2 |
1753 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
3280af22 |
1754 | PL_multiline = (i != 0); |
79072805 |
1755 | break; |
1756 | case '/': |
3280af22 |
1757 | SvREFCNT_dec(PL_nrs); |
1758 | PL_nrs = newSVsv(sv); |
1759 | SvREFCNT_dec(PL_rs); |
1760 | PL_rs = SvREFCNT_inc(PL_nrs); |
79072805 |
1761 | break; |
1762 | case '\\': |
3280af22 |
1763 | if (PL_ors) |
1764 | Safefree(PL_ors); |
e3c19b7b |
1765 | if (SvOK(sv) || SvGMAGICAL(sv)) |
3280af22 |
1766 | PL_ors = savepv(SvPV(sv,PL_orslen)); |
e3c19b7b |
1767 | else { |
3280af22 |
1768 | PL_ors = Nullch; |
1769 | PL_orslen = 0; |
e3c19b7b |
1770 | } |
79072805 |
1771 | break; |
1772 | case ',': |
3280af22 |
1773 | if (PL_ofs) |
1774 | Safefree(PL_ofs); |
1775 | PL_ofs = savepv(SvPV(sv, PL_ofslen)); |
79072805 |
1776 | break; |
1777 | case '#': |
3280af22 |
1778 | if (PL_ofmt) |
1779 | Safefree(PL_ofmt); |
1780 | PL_ofmt = savepv(SvPV(sv,PL_na)); |
79072805 |
1781 | break; |
1782 | case '[': |
3280af22 |
1783 | PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1784 | break; |
1785 | case '?': |
ff0cee69 |
1786 | #ifdef COMPLEX_STATUS |
6b88bc9c |
1787 | if (PL_localizing == 2) { |
1788 | PL_statusvalue = LvTARGOFF(sv); |
1789 | PL_statusvalue_vms = LvTARGLEN(sv); |
ff0cee69 |
1790 | } |
1791 | else |
1792 | #endif |
1793 | #ifdef VMSISH_STATUS |
1794 | if (VMSISH_STATUS) |
1795 | STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv))); |
1796 | else |
1797 | #endif |
1798 | STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 |
1799 | break; |
1800 | case '!': |
78987ded |
1801 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
f86702cc |
1802 | (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno); |
79072805 |
1803 | break; |
1804 | case '<': |
3280af22 |
1805 | PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1806 | if (PL_delaymagic) { |
1807 | PL_delaymagic |= DM_RUID; |
79072805 |
1808 | break; /* don't do magic till later */ |
1809 | } |
1810 | #ifdef HAS_SETRUID |
b28d0864 |
1811 | (void)setruid((Uid_t)PL_uid); |
79072805 |
1812 | #else |
1813 | #ifdef HAS_SETREUID |
3280af22 |
1814 | (void)setreuid((Uid_t)PL_uid, (Uid_t)-1); |
748a9306 |
1815 | #else |
85e6fe83 |
1816 | #ifdef HAS_SETRESUID |
b28d0864 |
1817 | (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 |
1818 | #else |
b28d0864 |
1819 | if (PL_uid == PL_euid) /* special case $< = $> */ |
1820 | (void)PerlProc_setuid(PL_uid); |
a0d0e21e |
1821 | else { |
b28d0864 |
1822 | PL_uid = (I32)PerlProc_getuid(); |
463ee0b2 |
1823 | croak("setruid() not implemented"); |
a0d0e21e |
1824 | } |
79072805 |
1825 | #endif |
1826 | #endif |
85e6fe83 |
1827 | #endif |
3280af22 |
1828 | PL_uid = (I32)PerlProc_getuid(); |
1829 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 |
1830 | break; |
1831 | case '>': |
3280af22 |
1832 | PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1833 | if (PL_delaymagic) { |
1834 | PL_delaymagic |= DM_EUID; |
79072805 |
1835 | break; /* don't do magic till later */ |
1836 | } |
1837 | #ifdef HAS_SETEUID |
3280af22 |
1838 | (void)seteuid((Uid_t)PL_euid); |
79072805 |
1839 | #else |
1840 | #ifdef HAS_SETREUID |
b28d0864 |
1841 | (void)setreuid((Uid_t)-1, (Uid_t)PL_euid); |
85e6fe83 |
1842 | #else |
1843 | #ifdef HAS_SETRESUID |
6b88bc9c |
1844 | (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1); |
79072805 |
1845 | #else |
b28d0864 |
1846 | if (PL_euid == PL_uid) /* special case $> = $< */ |
1847 | PerlProc_setuid(PL_euid); |
a0d0e21e |
1848 | else { |
b28d0864 |
1849 | PL_euid = (I32)PerlProc_geteuid(); |
463ee0b2 |
1850 | croak("seteuid() not implemented"); |
a0d0e21e |
1851 | } |
79072805 |
1852 | #endif |
1853 | #endif |
85e6fe83 |
1854 | #endif |
3280af22 |
1855 | PL_euid = (I32)PerlProc_geteuid(); |
1856 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 |
1857 | break; |
1858 | case '(': |
3280af22 |
1859 | PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1860 | if (PL_delaymagic) { |
1861 | PL_delaymagic |= DM_RGID; |
79072805 |
1862 | break; /* don't do magic till later */ |
1863 | } |
1864 | #ifdef HAS_SETRGID |
b28d0864 |
1865 | (void)setrgid((Gid_t)PL_gid); |
79072805 |
1866 | #else |
1867 | #ifdef HAS_SETREGID |
3280af22 |
1868 | (void)setregid((Gid_t)PL_gid, (Gid_t)-1); |
85e6fe83 |
1869 | #else |
1870 | #ifdef HAS_SETRESGID |
b28d0864 |
1871 | (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1); |
79072805 |
1872 | #else |
b28d0864 |
1873 | if (PL_gid == PL_egid) /* special case $( = $) */ |
1874 | (void)PerlProc_setgid(PL_gid); |
748a9306 |
1875 | else { |
b28d0864 |
1876 | PL_gid = (I32)PerlProc_getgid(); |
463ee0b2 |
1877 | croak("setrgid() not implemented"); |
748a9306 |
1878 | } |
79072805 |
1879 | #endif |
1880 | #endif |
85e6fe83 |
1881 | #endif |
3280af22 |
1882 | PL_gid = (I32)PerlProc_getgid(); |
1883 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 |
1884 | break; |
1885 | case ')': |
5cd24f17 |
1886 | #ifdef HAS_SETGROUPS |
1887 | { |
3280af22 |
1888 | char *p = SvPV(sv, PL_na); |
5cd24f17 |
1889 | Groups_t gary[NGROUPS]; |
1890 | |
1891 | SET_NUMERIC_STANDARD(); |
1892 | while (isSPACE(*p)) |
1893 | ++p; |
3280af22 |
1894 | PL_egid = I_V(atof(p)); |
5cd24f17 |
1895 | for (i = 0; i < NGROUPS; ++i) { |
1896 | while (*p && !isSPACE(*p)) |
1897 | ++p; |
1898 | while (isSPACE(*p)) |
1899 | ++p; |
1900 | if (!*p) |
1901 | break; |
1902 | gary[i] = I_V(atof(p)); |
1903 | } |
8cc95fdb |
1904 | if (i) |
1905 | (void)setgroups(i, gary); |
5cd24f17 |
1906 | } |
1907 | #else /* HAS_SETGROUPS */ |
b28d0864 |
1908 | PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
5cd24f17 |
1909 | #endif /* HAS_SETGROUPS */ |
3280af22 |
1910 | if (PL_delaymagic) { |
1911 | PL_delaymagic |= DM_EGID; |
79072805 |
1912 | break; /* don't do magic till later */ |
1913 | } |
1914 | #ifdef HAS_SETEGID |
3280af22 |
1915 | (void)setegid((Gid_t)PL_egid); |
79072805 |
1916 | #else |
1917 | #ifdef HAS_SETREGID |
b28d0864 |
1918 | (void)setregid((Gid_t)-1, (Gid_t)PL_egid); |
85e6fe83 |
1919 | #else |
1920 | #ifdef HAS_SETRESGID |
b28d0864 |
1921 | (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1); |
79072805 |
1922 | #else |
b28d0864 |
1923 | if (PL_egid == PL_gid) /* special case $) = $( */ |
1924 | (void)PerlProc_setgid(PL_egid); |
748a9306 |
1925 | else { |
b28d0864 |
1926 | PL_egid = (I32)PerlProc_getegid(); |
463ee0b2 |
1927 | croak("setegid() not implemented"); |
748a9306 |
1928 | } |
79072805 |
1929 | #endif |
1930 | #endif |
85e6fe83 |
1931 | #endif |
3280af22 |
1932 | PL_egid = (I32)PerlProc_getegid(); |
1933 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 |
1934 | break; |
1935 | case ':': |
3280af22 |
1936 | PL_chopset = SvPV_force(sv,PL_na); |
79072805 |
1937 | break; |
1938 | case '0': |
3280af22 |
1939 | if (!PL_origalen) { |
1940 | s = PL_origargv[0]; |
79072805 |
1941 | s += strlen(s); |
1942 | /* See if all the arguments are contiguous in memory */ |
3280af22 |
1943 | for (i = 1; i < PL_origargc; i++) { |
1944 | if (PL_origargv[i] == s + 1 |
fb73857a |
1945 | #ifdef OS2 |
6b88bc9c |
1946 | || PL_origargv[i] == s + 2 |
fb73857a |
1947 | #endif |
1948 | ) |
79072805 |
1949 | s += strlen(++s); /* this one is ok too */ |
fb73857a |
1950 | else |
1951 | break; |
79072805 |
1952 | } |
bbce6d69 |
1953 | /* can grab env area too? */ |
3280af22 |
1954 | if (PL_origenviron && (PL_origenviron[0] == s + 1 |
fb73857a |
1955 | #ifdef OS2 |
6b88bc9c |
1956 | || (PL_origenviron[0] == s + 9 && (s += 8)) |
fb73857a |
1957 | #endif |
1958 | )) { |
66b1d557 |
1959 | my_setenv("NoNe SuCh", Nullch); |
79072805 |
1960 | /* force copy of environment */ |
3280af22 |
1961 | for (i = 0; PL_origenviron[i]; i++) |
1962 | if (PL_origenviron[i] == s + 1) |
79072805 |
1963 | s += strlen(++s); |
fb73857a |
1964 | else |
1965 | break; |
79072805 |
1966 | } |
3280af22 |
1967 | PL_origalen = s - PL_origargv[0]; |
79072805 |
1968 | } |
a0d0e21e |
1969 | s = SvPV_force(sv,len); |
8990e307 |
1970 | i = len; |
3280af22 |
1971 | if (i >= PL_origalen) { |
1972 | i = PL_origalen; |
fb73857a |
1973 | /* don't allow system to limit $0 seen by script */ |
1974 | /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */ |
3280af22 |
1975 | Copy(s, PL_origargv[0], i, char); |
1976 | s = PL_origargv[0]+i; |
fb73857a |
1977 | *s = '\0'; |
79072805 |
1978 | } |
1979 | else { |
3280af22 |
1980 | Copy(s, PL_origargv[0], i, char); |
1981 | s = PL_origargv[0]+i; |
79072805 |
1982 | *s++ = '\0'; |
3280af22 |
1983 | while (++i < PL_origalen) |
8990e307 |
1984 | *s++ = ' '; |
3280af22 |
1985 | s = PL_origargv[0]+i; |
1986 | for (i = 1; i < PL_origargc; i++) |
1987 | PL_origargv[i] = Nullch; |
79072805 |
1988 | } |
1989 | break; |
a863c7d1 |
1990 | #ifdef USE_THREADS |
1991 | case '@': |
38a03e6e |
1992 | sv_setsv(thr->errsv, sv); |
a863c7d1 |
1993 | break; |
1994 | #endif /* USE_THREADS */ |
79072805 |
1995 | } |
1996 | return 0; |
1997 | } |
1998 | |
f93b4edd |
1999 | #ifdef USE_THREADS |
2000 | int |
8ac85365 |
2001 | magic_mutexfree(SV *sv, MAGIC *mg) |
f93b4edd |
2002 | { |
2003 | dTHR; |
8b73bbec |
2004 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), "0x%lx: magic_mutexfree 0x%lx\n", |
bc1f4c86 |
2005 | (unsigned long)thr, (unsigned long)sv);) |
f93b4edd |
2006 | if (MgOWNER(mg)) |
2007 | croak("panic: magic_mutexfree"); |
2008 | MUTEX_DESTROY(MgMUTEXP(mg)); |
2009 | COND_DESTROY(MgCONDP(mg)); |
e55aaa0e |
2010 | SvREFCNT_dec(sv); |
f93b4edd |
2011 | return 0; |
2012 | } |
2013 | #endif /* USE_THREADS */ |
2014 | |
79072805 |
2015 | I32 |
8ac85365 |
2016 | whichsig(char *sig) |
79072805 |
2017 | { |
2018 | register char **sigv; |
2019 | |
2020 | for (sigv = sig_name+1; *sigv; sigv++) |
2021 | if (strEQ(sig,*sigv)) |
8e07c86e |
2022 | return sig_num[sigv - sig_name]; |
79072805 |
2023 | #ifdef SIGCLD |
2024 | if (strEQ(sig,"CHLD")) |
2025 | return SIGCLD; |
2026 | #endif |
2027 | #ifdef SIGCHLD |
2028 | if (strEQ(sig,"CLD")) |
2029 | return SIGCHLD; |
2030 | #endif |
2031 | return 0; |
2032 | } |
2033 | |
84902520 |
2034 | static SV* sig_sv; |
2035 | |
76e3520e |
2036 | STATIC void |
8ac85365 |
2037 | unwind_handler_stack(void *p) |
84902520 |
2038 | { |
ff26ac79 |
2039 | dTHR; |
84902520 |
2040 | U32 flags = *(U32*)p; |
2041 | |
2042 | if (flags & 1) |
3280af22 |
2043 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ |
84902520 |
2044 | /* cxstack_ix-- Not needed, die already unwound it. */ |
2045 | if (flags & 64) |
2046 | SvREFCNT_dec(sig_sv); |
2047 | } |
2048 | |
ecfc5424 |
2049 | Signal_t |
8ac85365 |
2050 | sighandler(int sig) |
79072805 |
2051 | { |
2052 | dSP; |
00d579c5 |
2053 | GV *gv = Nullgv; |
a0d0e21e |
2054 | HV *st; |
3280af22 |
2055 | SV *sv, *tSv = PL_Sv; |
00d579c5 |
2056 | CV *cv = Nullcv; |
533c011a |
2057 | OP *myop = PL_op; |
84902520 |
2058 | U32 flags = 0; |
3280af22 |
2059 | I32 o_save_i = PL_savestack_ix, type; |
2060 | XPV *tXpv = PL_Xpv; |
84902520 |
2061 | |
3280af22 |
2062 | if (PL_savestack_ix + 15 <= PL_savestack_max) |
84902520 |
2063 | flags |= 1; |
3280af22 |
2064 | if (PL_markstack_ptr < PL_markstack_max - 2) |
84902520 |
2065 | flags |= 4; |
3280af22 |
2066 | if (PL_retstack_ix < PL_retstack_max - 2) |
84902520 |
2067 | flags |= 8; |
3280af22 |
2068 | if (PL_scopestack_ix < PL_scopestack_max - 3) |
84902520 |
2069 | flags |= 16; |
2070 | |
ff0cee69 |
2071 | if (!psig_ptr[sig]) |
2072 | die("Signal SIG%s received, but no signal handler set.\n", |
2073 | sig_name[sig]); |
2074 | |
84902520 |
2075 | /* Max number of items pushed there is 3*n or 4. We cannot fix |
2076 | infinity, so we fix 4 (in fact 5): */ |
2077 | if (flags & 1) { |
3280af22 |
2078 | PL_savestack_ix += 5; /* Protect save in progress. */ |
2079 | o_save_i = PL_savestack_ix; |
565764a8 |
2080 | SAVEDESTRUCTOR(unwind_handler_stack, (void*)&flags); |
84902520 |
2081 | } |
2082 | if (flags & 4) |
3280af22 |
2083 | PL_markstack_ptr++; /* Protect mark. */ |
84902520 |
2084 | if (flags & 8) { |
3280af22 |
2085 | PL_retstack_ix++; |
2086 | PL_retstack[PL_retstack_ix] = NULL; |
84902520 |
2087 | } |
2088 | if (flags & 16) |
3280af22 |
2089 | PL_scopestack_ix += 1; |
84902520 |
2090 | /* sv_2cv is too complicated, try a simpler variant first: */ |
2091 | if (!SvROK(psig_ptr[sig]) || !(cv = (CV*)SvRV(psig_ptr[sig])) |
2092 | || SvTYPE(cv) != SVt_PVCV) |
2093 | cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE); |
2094 | |
a0d0e21e |
2095 | if (!cv || !CvROOT(cv)) { |
599cee73 |
2096 | if (ckWARN(WARN_SIGNAL)) |
2097 | warner(WARN_SIGNAL, "SIG%s handler \"%s\" not defined.\n", |
00d579c5 |
2098 | sig_name[sig], (gv ? GvENAME(gv) |
2099 | : ((cv && CvGV(cv)) |
2100 | ? GvENAME(CvGV(cv)) |
2101 | : "__ANON__"))); |
2102 | goto cleanup; |
79072805 |
2103 | } |
2104 | |
84902520 |
2105 | if(psig_name[sig]) { |
88e89b8a |
2106 | sv = SvREFCNT_inc(psig_name[sig]); |
84902520 |
2107 | flags |= 64; |
2108 | sig_sv = sv; |
2109 | } else { |
ff0cee69 |
2110 | sv = sv_newmortal(); |
2111 | sv_setpv(sv,sig_name[sig]); |
88e89b8a |
2112 | } |
e336de0d |
2113 | |
e788e7d3 |
2114 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 |
2115 | PUSHMARK(SP); |
79072805 |
2116 | PUSHs(sv); |
79072805 |
2117 | PUTBACK; |
a0d0e21e |
2118 | |
2119 | perl_call_sv((SV*)cv, G_DISCARD); |
79072805 |
2120 | |
d3acc0f7 |
2121 | POPSTACK; |
00d579c5 |
2122 | cleanup: |
84902520 |
2123 | if (flags & 1) |
3280af22 |
2124 | PL_savestack_ix -= 8; /* Unprotect save in progress. */ |
84902520 |
2125 | if (flags & 4) |
3280af22 |
2126 | PL_markstack_ptr--; |
84902520 |
2127 | if (flags & 8) |
3280af22 |
2128 | PL_retstack_ix--; |
84902520 |
2129 | if (flags & 16) |
3280af22 |
2130 | PL_scopestack_ix -= 1; |
84902520 |
2131 | if (flags & 64) |
2132 | SvREFCNT_dec(sv); |
533c011a |
2133 | PL_op = myop; /* Apparently not needed... */ |
84902520 |
2134 | |
3280af22 |
2135 | PL_Sv = tSv; /* Restore global temporaries. */ |
2136 | PL_Xpv = tXpv; |
79072805 |
2137 | return; |
2138 | } |
4e35701f |
2139 | |
2140 | |