Commit | Line | Data |
a0d0e21e |
1 | /* mg.c |
79072805 |
2 | * |
4eb8286e |
3 | * Copyright (c) 1991-1999, 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" |
864dbfa3 |
16 | #define PERL_IN_MG_C |
79072805 |
17 | #include "perl.h" |
18 | |
e6d9441c |
19 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
a0d0e21e |
20 | #ifdef I_UNISTD |
21 | # include <unistd.h> |
22 | #endif |
a0d0e21e |
23 | |
5cd24f17 |
24 | #if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS) |
188ea221 |
25 | # ifndef NGROUPS |
26 | # define NGROUPS 32 |
27 | # endif |
28 | #endif |
29 | |
455ece5e |
30 | #ifdef PERL_OBJECT |
31 | # define VTBL this->*vtbl |
32 | #else |
33 | # define VTBL *vtbl |
455ece5e |
34 | #endif |
35 | |
51371543 |
36 | static void restore_magic(pTHXo_ void *p); |
37 | static void unwind_handler_stack(pTHXo_ void *p); |
38 | |
c07a80fd |
39 | /* |
40 | * Use the "DESTRUCTOR" scope cleanup to reinstate magic. |
41 | */ |
42 | |
43 | struct magic_state { |
44 | SV* mgs_sv; |
45 | U32 mgs_flags; |
455ece5e |
46 | I32 mgs_ss_ix; |
c07a80fd |
47 | }; |
455ece5e |
48 | /* MGS is typedef'ed to struct magic_state in perl.h */ |
76e3520e |
49 | |
50 | STATIC void |
cea2e8a9 |
51 | S_save_magic(pTHX_ I32 mgs_ix, SV *sv) |
c07a80fd |
52 | { |
46124e9e |
53 | dTHR; |
455ece5e |
54 | MGS* mgs; |
c07a80fd |
55 | assert(SvMAGICAL(sv)); |
56 | |
51371543 |
57 | SAVEDESTRUCTOR(restore_magic, (void*)mgs_ix); |
455ece5e |
58 | |
59 | mgs = SSPTR(mgs_ix, MGS*); |
c07a80fd |
60 | mgs->mgs_sv = sv; |
61 | mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv); |
455ece5e |
62 | mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */ |
c07a80fd |
63 | |
64 | SvMAGICAL_off(sv); |
65 | SvREADONLY_off(sv); |
66 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
c07a80fd |
67 | } |
68 | |
8990e307 |
69 | void |
864dbfa3 |
70 | Perl_mg_magical(pTHX_ SV *sv) |
8990e307 |
71 | { |
72 | MAGIC* mg; |
73 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
74 | MGVTBL* vtbl = mg->mg_virtual; |
75 | if (vtbl) { |
76e3520e |
76 | if ((vtbl->svt_get != NULL) && !(mg->mg_flags & MGf_GSKIP)) |
8990e307 |
77 | SvGMAGICAL_on(sv); |
78 | if (vtbl->svt_set) |
79 | SvSMAGICAL_on(sv); |
76e3520e |
80 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || (vtbl->svt_clear != NULL)) |
8990e307 |
81 | SvRMAGICAL_on(sv); |
82 | } |
83 | } |
84 | } |
85 | |
79072805 |
86 | int |
864dbfa3 |
87 | Perl_mg_get(pTHX_ SV *sv) |
79072805 |
88 | { |
46124e9e |
89 | dTHR; |
455ece5e |
90 | I32 mgs_ix; |
79072805 |
91 | MAGIC* mg; |
c6496cc7 |
92 | MAGIC** mgp; |
760ac839 |
93 | int mgp_valid = 0; |
463ee0b2 |
94 | |
455ece5e |
95 | mgs_ix = SSNEW(sizeof(MGS)); |
96 | save_magic(mgs_ix, sv); |
463ee0b2 |
97 | |
c6496cc7 |
98 | mgp = &SvMAGIC(sv); |
99 | while ((mg = *mgp) != 0) { |
79072805 |
100 | MGVTBL* vtbl = mg->mg_virtual; |
76e3520e |
101 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && (vtbl->svt_get != NULL)) { |
cea2e8a9 |
102 | (VTBL->svt_get)(aTHX_ sv, mg); |
c6496cc7 |
103 | /* Ignore this magic if it's been deleted */ |
48e43a1c |
104 | if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) && |
105 | (mg->mg_flags & MGf_GSKIP)) |
455ece5e |
106 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
a0d0e21e |
107 | } |
c6496cc7 |
108 | /* Advance to next magic (complicated by possible deletion) */ |
760ac839 |
109 | if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) { |
c6496cc7 |
110 | mgp = &mg->mg_moremagic; |
760ac839 |
111 | mgp_valid = 1; |
112 | } |
113 | else |
114 | mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */ |
79072805 |
115 | } |
463ee0b2 |
116 | |
51371543 |
117 | restore_magic(aTHXo_ (void*)mgs_ix); |
79072805 |
118 | return 0; |
119 | } |
120 | |
121 | int |
864dbfa3 |
122 | Perl_mg_set(pTHX_ SV *sv) |
79072805 |
123 | { |
46124e9e |
124 | dTHR; |
455ece5e |
125 | I32 mgs_ix; |
79072805 |
126 | MAGIC* mg; |
463ee0b2 |
127 | MAGIC* nextmg; |
128 | |
455ece5e |
129 | mgs_ix = SSNEW(sizeof(MGS)); |
130 | save_magic(mgs_ix, sv); |
463ee0b2 |
131 | |
132 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { |
79072805 |
133 | MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 |
134 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e |
135 | if (mg->mg_flags & MGf_GSKIP) { |
136 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ |
455ece5e |
137 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
a0d0e21e |
138 | } |
76e3520e |
139 | if (vtbl && (vtbl->svt_set != NULL)) |
cea2e8a9 |
140 | (VTBL->svt_set)(aTHX_ sv, mg); |
79072805 |
141 | } |
463ee0b2 |
142 | |
51371543 |
143 | restore_magic(aTHXo_ (void*)mgs_ix); |
79072805 |
144 | return 0; |
145 | } |
146 | |
147 | U32 |
864dbfa3 |
148 | Perl_mg_length(pTHX_ SV *sv) |
79072805 |
149 | { |
150 | MAGIC* mg; |
748a9306 |
151 | char *junk; |
463ee0b2 |
152 | STRLEN len; |
463ee0b2 |
153 | |
79072805 |
154 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
155 | MGVTBL* vtbl = mg->mg_virtual; |
76e3520e |
156 | if (vtbl && (vtbl->svt_len != NULL)) { |
455ece5e |
157 | I32 mgs_ix; |
48e43a1c |
158 | |
455ece5e |
159 | mgs_ix = SSNEW(sizeof(MGS)); |
160 | save_magic(mgs_ix, sv); |
a0d0e21e |
161 | /* omit MGf_GSKIP -- not changed here */ |
cea2e8a9 |
162 | len = (VTBL->svt_len)(aTHX_ sv, mg); |
51371543 |
163 | restore_magic(aTHXo_ (void*)mgs_ix); |
85e6fe83 |
164 | return len; |
165 | } |
166 | } |
167 | |
748a9306 |
168 | junk = SvPV(sv, len); |
463ee0b2 |
169 | return len; |
79072805 |
170 | } |
171 | |
93965878 |
172 | I32 |
864dbfa3 |
173 | Perl_mg_size(pTHX_ SV *sv) |
93965878 |
174 | { |
175 | MAGIC* mg; |
176 | I32 len; |
177 | |
178 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
179 | MGVTBL* vtbl = mg->mg_virtual; |
565764a8 |
180 | if (vtbl && (vtbl->svt_len != NULL)) { |
455ece5e |
181 | I32 mgs_ix; |
182 | |
183 | mgs_ix = SSNEW(sizeof(MGS)); |
184 | save_magic(mgs_ix, sv); |
93965878 |
185 | /* omit MGf_GSKIP -- not changed here */ |
cea2e8a9 |
186 | len = (VTBL->svt_len)(aTHX_ sv, mg); |
51371543 |
187 | restore_magic(aTHXo_ (void*)mgs_ix); |
93965878 |
188 | return len; |
189 | } |
190 | } |
191 | |
192 | switch(SvTYPE(sv)) { |
193 | case SVt_PVAV: |
194 | len = AvFILLp((AV *) sv); /* Fallback to non-tied array */ |
195 | return len; |
196 | case SVt_PVHV: |
197 | /* FIXME */ |
198 | default: |
cea2e8a9 |
199 | Perl_croak(aTHX_ "Size magic not implemented"); |
93965878 |
200 | break; |
201 | } |
202 | return 0; |
203 | } |
204 | |
79072805 |
205 | int |
864dbfa3 |
206 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 |
207 | { |
455ece5e |
208 | I32 mgs_ix; |
79072805 |
209 | MAGIC* mg; |
463ee0b2 |
210 | |
455ece5e |
211 | mgs_ix = SSNEW(sizeof(MGS)); |
212 | save_magic(mgs_ix, sv); |
463ee0b2 |
213 | |
79072805 |
214 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
215 | MGVTBL* vtbl = mg->mg_virtual; |
a0d0e21e |
216 | /* omit GSKIP -- never set here */ |
217 | |
76e3520e |
218 | if (vtbl && (vtbl->svt_clear != NULL)) |
cea2e8a9 |
219 | (VTBL->svt_clear)(aTHX_ sv, mg); |
79072805 |
220 | } |
463ee0b2 |
221 | |
51371543 |
222 | restore_magic(aTHXo_ (void*)mgs_ix); |
79072805 |
223 | return 0; |
224 | } |
225 | |
93a17b20 |
226 | MAGIC* |
864dbfa3 |
227 | Perl_mg_find(pTHX_ SV *sv, int type) |
93a17b20 |
228 | { |
229 | MAGIC* mg; |
93a17b20 |
230 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
231 | if (mg->mg_type == type) |
232 | return mg; |
233 | } |
234 | return 0; |
235 | } |
236 | |
79072805 |
237 | int |
864dbfa3 |
238 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 |
239 | { |
463ee0b2 |
240 | int count = 0; |
79072805 |
241 | MAGIC* mg; |
463ee0b2 |
242 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
243 | if (isUPPER(mg->mg_type)) { |
33c27489 |
244 | sv_magic(nsv, |
245 | mg->mg_type == 'P' ? SvTIED_obj(sv, mg) : mg->mg_obj, |
246 | toLOWER(mg->mg_type), key, klen); |
463ee0b2 |
247 | count++; |
79072805 |
248 | } |
79072805 |
249 | } |
463ee0b2 |
250 | return count; |
79072805 |
251 | } |
252 | |
253 | int |
864dbfa3 |
254 | Perl_mg_free(pTHX_ SV *sv) |
79072805 |
255 | { |
256 | MAGIC* mg; |
257 | MAGIC* moremagic; |
258 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { |
259 | MGVTBL* vtbl = mg->mg_virtual; |
260 | moremagic = mg->mg_moremagic; |
76e3520e |
261 | if (vtbl && (vtbl->svt_free != NULL)) |
cea2e8a9 |
262 | (VTBL->svt_free)(aTHX_ sv, mg); |
93a17b20 |
263 | if (mg->mg_ptr && mg->mg_type != 'g') |
565764a8 |
264 | if (mg->mg_len >= 0) |
88e89b8a |
265 | Safefree(mg->mg_ptr); |
565764a8 |
266 | else if (mg->mg_len == HEf_SVKEY) |
88e89b8a |
267 | SvREFCNT_dec((SV*)mg->mg_ptr); |
85e6fe83 |
268 | if (mg->mg_flags & MGf_REFCOUNTED) |
8990e307 |
269 | SvREFCNT_dec(mg->mg_obj); |
79072805 |
270 | Safefree(mg); |
271 | } |
272 | SvMAGIC(sv) = 0; |
273 | return 0; |
274 | } |
275 | |
276 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
277 | #include <signal.h> |
278 | #endif |
279 | |
942e002e |
280 | U32 |
864dbfa3 |
281 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 |
282 | { |
283 | dTHR; |
284 | register char *s; |
285 | register I32 i; |
286 | register REGEXP *rx; |
287 | char *t; |
288 | |
8f580fb8 |
289 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
290 | if (mg->mg_obj) /* @+ */ |
291 | return rx->nparens; |
292 | else /* @- */ |
293 | return rx->lastparen; |
294 | } |
295 | |
942e002e |
296 | return (U32)-1; |
6cef1e77 |
297 | } |
298 | |
299 | int |
864dbfa3 |
300 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 |
301 | { |
302 | dTHR; |
303 | register I32 paren; |
cf93c79d |
304 | register I32 s; |
6cef1e77 |
305 | register I32 i; |
306 | register REGEXP *rx; |
cf93c79d |
307 | I32 t; |
6cef1e77 |
308 | |
309 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
310 | paren = mg->mg_len; |
311 | if (paren < 0) |
312 | return 0; |
313 | if (paren <= rx->nparens && |
cf93c79d |
314 | (s = rx->startp[paren]) != -1 && |
315 | (t = rx->endp[paren]) != -1) |
6cef1e77 |
316 | { |
317 | if (mg->mg_obj) /* @+ */ |
cf93c79d |
318 | i = t; |
6cef1e77 |
319 | else /* @- */ |
cf93c79d |
320 | i = s; |
6cef1e77 |
321 | sv_setiv(sv,i); |
322 | } |
323 | } |
324 | return 0; |
325 | } |
326 | |
93a17b20 |
327 | U32 |
864dbfa3 |
328 | Perl_magic_len(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 |
329 | { |
a863c7d1 |
330 | dTHR; |
93a17b20 |
331 | register I32 paren; |
332 | register char *s; |
333 | register I32 i; |
d9f97599 |
334 | register REGEXP *rx; |
748a9306 |
335 | char *t; |
93a17b20 |
336 | |
337 | switch (*mg->mg_ptr) { |
338 | case '1': case '2': case '3': case '4': |
339 | case '5': case '6': case '7': case '8': case '9': case '&': |
3280af22 |
340 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d |
341 | I32 s1, t1; |
342 | |
93a17b20 |
343 | paren = atoi(mg->mg_ptr); |
344 | getparen: |
d9f97599 |
345 | if (paren <= rx->nparens && |
cf93c79d |
346 | (s1 = rx->startp[paren]) != -1 && |
347 | (t1 = rx->endp[paren]) != -1) |
bbce6d69 |
348 | { |
cf93c79d |
349 | i = t1 - s1; |
71be2cbc |
350 | if (i >= 0) |
93a17b20 |
351 | return i; |
93a17b20 |
352 | } |
93a17b20 |
353 | } |
748a9306 |
354 | return 0; |
93a17b20 |
355 | case '+': |
3280af22 |
356 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
d9f97599 |
357 | paren = rx->lastparen; |
13f57bf8 |
358 | if (paren) |
359 | goto getparen; |
93a17b20 |
360 | } |
748a9306 |
361 | return 0; |
93a17b20 |
362 | case '`': |
3280af22 |
363 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d |
364 | if (rx->startp[0] != -1) { |
365 | i = rx->startp[0]; |
71be2cbc |
366 | if (i >= 0) |
93a17b20 |
367 | return i; |
93a17b20 |
368 | } |
93a17b20 |
369 | } |
748a9306 |
370 | return 0; |
93a17b20 |
371 | case '\'': |
3280af22 |
372 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d |
373 | if (rx->endp[0] != -1) { |
374 | i = rx->sublen - rx->endp[0]; |
13f57bf8 |
375 | if (i >= 0) |
5cd24f17 |
376 | return i; |
93a17b20 |
377 | } |
93a17b20 |
378 | } |
748a9306 |
379 | return 0; |
93a17b20 |
380 | case ',': |
3280af22 |
381 | return (STRLEN)PL_ofslen; |
93a17b20 |
382 | case '\\': |
3280af22 |
383 | return (STRLEN)PL_orslen; |
93a17b20 |
384 | } |
385 | magic_get(sv,mg); |
2d8e6c8d |
386 | if (!SvPOK(sv) && SvNIOK(sv)) { |
387 | STRLEN n_a; |
388 | sv_2pv(sv, &n_a); |
389 | } |
93a17b20 |
390 | if (SvPOK(sv)) |
391 | return SvCUR(sv); |
392 | return 0; |
393 | } |
394 | |
79072805 |
395 | int |
864dbfa3 |
396 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
397 | { |
a863c7d1 |
398 | dTHR; |
79072805 |
399 | register I32 paren; |
400 | register char *s; |
401 | register I32 i; |
d9f97599 |
402 | register REGEXP *rx; |
748a9306 |
403 | char *t; |
79072805 |
404 | |
405 | switch (*mg->mg_ptr) { |
748a9306 |
406 | case '\001': /* ^A */ |
3280af22 |
407 | sv_setsv(sv, PL_bodytarget); |
748a9306 |
408 | break; |
599cee73 |
409 | case '\002': /* ^B */ |
0453d815 |
410 | if (PL_curcop->cop_warnings == WARN_NONE || |
411 | PL_curcop->cop_warnings == WARN_STD) |
412 | { |
599cee73 |
413 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; |
0453d815 |
414 | } |
415 | else if (PL_curcop->cop_warnings == WARN_ALL) { |
599cee73 |
416 | sv_setpvn(sv, WARN_ALLstring, WARNsize) ; |
0453d815 |
417 | } |
418 | else { |
e24b16f9 |
419 | sv_setsv(sv, PL_curcop->cop_warnings); |
0453d815 |
420 | } |
599cee73 |
421 | break; |
49460fe6 |
422 | case '\003': /* ^C */ |
423 | sv_setiv(sv, (IV)PL_minus_c); |
424 | break; |
425 | |
79072805 |
426 | case '\004': /* ^D */ |
3280af22 |
427 | sv_setiv(sv, (IV)(PL_debug & 32767)); |
79072805 |
428 | break; |
28f23441 |
429 | case '\005': /* ^E */ |
430 | #ifdef VMS |
431 | { |
432 | # include <descrip.h> |
433 | # include <starlet.h> |
434 | char msg[255]; |
435 | $DESCRIPTOR(msgdsc,msg); |
65202027 |
436 | sv_setnv(sv,(NV) vaxc$errno); |
28f23441 |
437 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) |
438 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); |
439 | else |
440 | sv_setpv(sv,""); |
441 | } |
442 | #else |
88e89b8a |
443 | #ifdef OS2 |
fb73857a |
444 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
65202027 |
445 | sv_setnv(sv, (NV)errno); |
fb73857a |
446 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
447 | } else { |
017f25f1 |
448 | if (errno != errno_isOS2) { |
449 | int tmp = _syserrno(); |
450 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ |
451 | Perl_rc = tmp; |
452 | } |
65202027 |
453 | sv_setnv(sv, (NV)Perl_rc); |
fb73857a |
454 | sv_setpv(sv, os2error(Perl_rc)); |
455 | } |
88e89b8a |
456 | #else |
22fae026 |
457 | #ifdef WIN32 |
458 | { |
459 | DWORD dwErr = GetLastError(); |
65202027 |
460 | sv_setnv(sv, (NV)dwErr); |
22fae026 |
461 | if (dwErr) |
76e3520e |
462 | { |
0cb96387 |
463 | PerlProc_GetOSError(sv, dwErr); |
76e3520e |
464 | } |
22fae026 |
465 | else |
466 | sv_setpv(sv, ""); |
467 | SetLastError(dwErr); |
468 | } |
469 | #else |
65202027 |
470 | sv_setnv(sv, (NV)errno); |
28f23441 |
471 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
472 | #endif |
88e89b8a |
473 | #endif |
22fae026 |
474 | #endif |
946ec16e |
475 | SvNOK_on(sv); /* what a wonderful hack! */ |
28f23441 |
476 | break; |
79072805 |
477 | case '\006': /* ^F */ |
3280af22 |
478 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 |
479 | break; |
a0d0e21e |
480 | case '\010': /* ^H */ |
3280af22 |
481 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e |
482 | break; |
9d116dd7 |
483 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 |
484 | if (PL_inplace) |
485 | sv_setpv(sv, PL_inplace); |
79072805 |
486 | else |
3280af22 |
487 | sv_setsv(sv, &PL_sv_undef); |
79072805 |
488 | break; |
28f23441 |
489 | case '\017': /* ^O */ |
3280af22 |
490 | sv_setpv(sv, PL_osname); |
28f23441 |
491 | break; |
79072805 |
492 | case '\020': /* ^P */ |
3280af22 |
493 | sv_setiv(sv, (IV)PL_perldb); |
79072805 |
494 | break; |
fb73857a |
495 | case '\023': /* ^S */ |
d58bf5aa |
496 | { |
497 | dTHR; |
3280af22 |
498 | if (PL_lex_state != LEX_NOTPARSING) |
d58bf5aa |
499 | SvOK_off(sv); |
3280af22 |
500 | else if (PL_in_eval) |
d58bf5aa |
501 | sv_setiv(sv, 1); |
502 | else |
503 | sv_setiv(sv, 0); |
504 | } |
fb73857a |
505 | break; |
79072805 |
506 | case '\024': /* ^T */ |
88e89b8a |
507 | #ifdef BIG_TIME |
6b88bc9c |
508 | sv_setnv(sv, PL_basetime); |
88e89b8a |
509 | #else |
3280af22 |
510 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a |
511 | #endif |
79072805 |
512 | break; |
513 | case '\027': /* ^W */ |
0453d815 |
514 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); |
79072805 |
515 | break; |
516 | case '1': case '2': case '3': case '4': |
517 | case '5': case '6': case '7': case '8': case '9': case '&': |
3280af22 |
518 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d |
519 | I32 s1, t1; |
520 | |
a863c7d1 |
521 | /* |
522 | * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj)); |
523 | * XXX Does the new way break anything? |
524 | */ |
525 | paren = atoi(mg->mg_ptr); |
79072805 |
526 | getparen: |
d9f97599 |
527 | if (paren <= rx->nparens && |
cf93c79d |
528 | (s1 = rx->startp[paren]) != -1 && |
529 | (t1 = rx->endp[paren]) != -1) |
bbce6d69 |
530 | { |
cf93c79d |
531 | i = t1 - s1; |
532 | s = rx->subbeg + s1; |
13f57bf8 |
533 | getrx: |
748a9306 |
534 | if (i >= 0) { |
13f57bf8 |
535 | bool was_tainted; |
3280af22 |
536 | if (PL_tainting) { |
537 | was_tainted = PL_tainted; |
538 | PL_tainted = FALSE; |
13f57bf8 |
539 | } |
cf93c79d |
540 | sv_setpvn(sv, s, i); |
3280af22 |
541 | if (PL_tainting) |
542 | PL_tainted = (was_tainted || RX_MATCH_TAINTED(rx)); |
748a9306 |
543 | break; |
544 | } |
79072805 |
545 | } |
79072805 |
546 | } |
3280af22 |
547 | sv_setsv(sv,&PL_sv_undef); |
79072805 |
548 | break; |
549 | case '+': |
3280af22 |
550 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
d9f97599 |
551 | paren = rx->lastparen; |
a0d0e21e |
552 | if (paren) |
553 | goto getparen; |
79072805 |
554 | } |
3280af22 |
555 | sv_setsv(sv,&PL_sv_undef); |
79072805 |
556 | break; |
557 | case '`': |
3280af22 |
558 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d |
559 | if ((s = rx->subbeg) && rx->startp[0] != -1) { |
560 | i = rx->startp[0]; |
13f57bf8 |
561 | goto getrx; |
79072805 |
562 | } |
79072805 |
563 | } |
3280af22 |
564 | sv_setsv(sv,&PL_sv_undef); |
79072805 |
565 | break; |
566 | case '\'': |
3280af22 |
567 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d |
568 | if (rx->subbeg && rx->endp[0] != -1) { |
569 | s = rx->subbeg + rx->endp[0]; |
570 | i = rx->sublen - rx->endp[0]; |
13f57bf8 |
571 | goto getrx; |
79072805 |
572 | } |
79072805 |
573 | } |
3280af22 |
574 | sv_setsv(sv,&PL_sv_undef); |
79072805 |
575 | break; |
576 | case '.': |
577 | #ifndef lint |
3280af22 |
578 | if (GvIO(PL_last_in_gv)) { |
579 | sv_setiv(sv, (IV)IoLINES(GvIO(PL_last_in_gv))); |
79072805 |
580 | } |
581 | #endif |
582 | break; |
583 | case '?': |
809a5acc |
584 | { |
809a5acc |
585 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 |
586 | #ifdef COMPLEX_STATUS |
6b88bc9c |
587 | LvTARGOFF(sv) = PL_statusvalue; |
588 | LvTARGLEN(sv) = PL_statusvalue_vms; |
ff0cee69 |
589 | #endif |
809a5acc |
590 | } |
79072805 |
591 | break; |
592 | case '^': |
3280af22 |
593 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); |
79072805 |
594 | if (s) |
595 | sv_setpv(sv,s); |
596 | else { |
3280af22 |
597 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
79072805 |
598 | sv_catpv(sv,"_TOP"); |
599 | } |
600 | break; |
601 | case '~': |
3280af22 |
602 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); |
79072805 |
603 | if (!s) |
3280af22 |
604 | s = GvENAME(PL_defoutgv); |
79072805 |
605 | sv_setpv(sv,s); |
606 | break; |
607 | #ifndef lint |
608 | case '=': |
3280af22 |
609 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); |
79072805 |
610 | break; |
611 | case '-': |
3280af22 |
612 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); |
79072805 |
613 | break; |
614 | case '%': |
3280af22 |
615 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); |
79072805 |
616 | break; |
617 | #endif |
618 | case ':': |
619 | break; |
620 | case '/': |
621 | break; |
622 | case '[': |
3280af22 |
623 | WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase)); |
79072805 |
624 | break; |
625 | case '|': |
3280af22 |
626 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 |
627 | break; |
628 | case ',': |
3280af22 |
629 | sv_setpvn(sv,PL_ofs,PL_ofslen); |
79072805 |
630 | break; |
631 | case '\\': |
3280af22 |
632 | sv_setpvn(sv,PL_ors,PL_orslen); |
79072805 |
633 | break; |
634 | case '#': |
3280af22 |
635 | sv_setpv(sv,PL_ofmt); |
79072805 |
636 | break; |
637 | case '!': |
a5f75d66 |
638 | #ifdef VMS |
65202027 |
639 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
88e89b8a |
640 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
a5f75d66 |
641 | #else |
88e89b8a |
642 | { |
643 | int saveerrno = errno; |
65202027 |
644 | sv_setnv(sv, (NV)errno); |
88e89b8a |
645 | #ifdef OS2 |
646 | if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc)); |
647 | else |
a5f75d66 |
648 | #endif |
2304df62 |
649 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
88e89b8a |
650 | errno = saveerrno; |
651 | } |
652 | #endif |
946ec16e |
653 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 |
654 | break; |
655 | case '<': |
3280af22 |
656 | sv_setiv(sv, (IV)PL_uid); |
79072805 |
657 | break; |
658 | case '>': |
3280af22 |
659 | sv_setiv(sv, (IV)PL_euid); |
79072805 |
660 | break; |
661 | case '(': |
3280af22 |
662 | sv_setiv(sv, (IV)PL_gid); |
cea2e8a9 |
663 | Perl_sv_setpvf(aTHX_ sv, "%Vd", (IV)PL_gid); |
79072805 |
664 | goto add_groups; |
665 | case ')': |
3280af22 |
666 | sv_setiv(sv, (IV)PL_egid); |
cea2e8a9 |
667 | Perl_sv_setpvf(aTHX_ sv, "%Vd", (IV)PL_egid); |
79072805 |
668 | add_groups: |
79072805 |
669 | #ifdef HAS_GETGROUPS |
79072805 |
670 | { |
a0d0e21e |
671 | Groups_t gary[NGROUPS]; |
79072805 |
672 | i = getgroups(NGROUPS,gary); |
46fc3d4c |
673 | while (--i >= 0) |
cea2e8a9 |
674 | Perl_sv_catpvf(aTHX_ sv, " %Vd", (IV)gary[i]); |
79072805 |
675 | } |
676 | #endif |
29355cf7 |
677 | SvIOK_on(sv); /* what a wonderful hack! */ |
79072805 |
678 | break; |
679 | case '*': |
680 | break; |
681 | case '0': |
682 | break; |
a863c7d1 |
683 | #ifdef USE_THREADS |
684 | case '@': |
38a03e6e |
685 | sv_setsv(sv, thr->errsv); |
a863c7d1 |
686 | break; |
687 | #endif /* USE_THREADS */ |
79072805 |
688 | } |
a0d0e21e |
689 | return 0; |
79072805 |
690 | } |
691 | |
692 | int |
864dbfa3 |
693 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
694 | { |
695 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; |
696 | |
697 | if (uf && uf->uf_val) |
698 | (*uf->uf_val)(uf->uf_index, sv); |
699 | return 0; |
700 | } |
701 | |
702 | int |
864dbfa3 |
703 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
704 | { |
705 | register char *s; |
88e89b8a |
706 | char *ptr; |
5aabfad6 |
707 | STRLEN len, klen; |
a0d0e21e |
708 | I32 i; |
1e422769 |
709 | |
a0d0e21e |
710 | s = SvPV(sv,len); |
5aabfad6 |
711 | ptr = MgPV(mg,klen); |
88e89b8a |
712 | my_setenv(ptr, s); |
1e422769 |
713 | |
a0d0e21e |
714 | #ifdef DYNAMIC_ENV_FETCH |
715 | /* We just undefd an environment var. Is a replacement */ |
716 | /* waiting in the wings? */ |
717 | if (!len) { |
5aabfad6 |
718 | SV **valp; |
6b88bc9c |
719 | if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE))) |
5aabfad6 |
720 | s = SvPV(*valp, len); |
a0d0e21e |
721 | } |
722 | #endif |
1e422769 |
723 | |
39e571d4 |
724 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 |
725 | /* And you'll never guess what the dog had */ |
726 | /* in its mouth... */ |
3280af22 |
727 | if (PL_tainting) { |
1e422769 |
728 | MgTAINTEDDIR_off(mg); |
729 | #ifdef VMS |
5aabfad6 |
730 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
1e422769 |
731 | char pathbuf[256], eltbuf[256], *cp, *elt = s; |
732 | struct stat sbuf; |
733 | int i = 0, j = 0; |
734 | |
735 | do { /* DCL$PATH may be a search list */ |
736 | while (1) { /* as may dev portion of any element */ |
737 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { |
738 | if ( *(cp+1) == '.' || *(cp+1) == '-' || |
739 | cando_by_name(S_IWUSR,0,elt) ) { |
740 | MgTAINTEDDIR_on(mg); |
741 | return 0; |
742 | } |
743 | } |
744 | if ((cp = strchr(elt, ':')) != Nullch) |
745 | *cp = '\0'; |
746 | if (my_trnlnm(elt, eltbuf, j++)) |
747 | elt = eltbuf; |
748 | else |
749 | break; |
750 | } |
751 | j = 0; |
752 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); |
753 | } |
754 | #endif /* VMS */ |
5aabfad6 |
755 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
a0d0e21e |
756 | char *strend = s + len; |
463ee0b2 |
757 | |
758 | while (s < strend) { |
96827780 |
759 | char tmpbuf[256]; |
1e422769 |
760 | struct stat st; |
96827780 |
761 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
fc36a67e |
762 | s, strend, ':', &i); |
463ee0b2 |
763 | s++; |
96827780 |
764 | if (i >= sizeof tmpbuf /* too long -- assume the worst */ |
765 | || *tmpbuf != '/' |
c6ed36e1 |
766 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 |
767 | MgTAINTEDDIR_on(mg); |
1e422769 |
768 | return 0; |
769 | } |
463ee0b2 |
770 | } |
79072805 |
771 | } |
772 | } |
39e571d4 |
773 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 |
774 | |
79072805 |
775 | return 0; |
776 | } |
777 | |
778 | int |
864dbfa3 |
779 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 |
780 | { |
2d8e6c8d |
781 | STRLEN n_a; |
782 | my_setenv(MgPV(mg,n_a),Nullch); |
85e6fe83 |
783 | return 0; |
784 | } |
785 | |
88e89b8a |
786 | int |
864dbfa3 |
787 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a |
788 | { |
789 | #if defined(VMS) |
cea2e8a9 |
790 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a |
791 | #else |
d58bf5aa |
792 | dTHR; |
3280af22 |
793 | if (PL_localizing) { |
fb73857a |
794 | HE* entry; |
2d8e6c8d |
795 | STRLEN n_a; |
fb73857a |
796 | magic_clear_all_env(sv,mg); |
797 | hv_iterinit((HV*)sv); |
798 | while (entry = hv_iternext((HV*)sv)) { |
799 | I32 keylen; |
800 | my_setenv(hv_iterkey(entry, &keylen), |
2d8e6c8d |
801 | SvPV(hv_iterval((HV*)sv, entry), n_a)); |
fb73857a |
802 | } |
803 | } |
804 | #endif |
805 | return 0; |
806 | } |
807 | |
808 | int |
864dbfa3 |
809 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 |
810 | { |
3e3baf6d |
811 | #if defined(VMS) |
cea2e8a9 |
812 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
3e3baf6d |
813 | #else |
f2517201 |
814 | # ifdef WIN32 |
3e3baf6d |
815 | char *envv = GetEnvironmentStrings(); |
816 | char *cur = envv; |
817 | STRLEN len; |
818 | while (*cur) { |
819 | char *end = strchr(cur,'='); |
820 | if (end && end != cur) { |
821 | *end = '\0'; |
822 | my_setenv(cur,Nullch); |
823 | *end = '='; |
ac5c734f |
824 | cur = end + strlen(end+1)+2; |
3e3baf6d |
825 | } |
826 | else if ((len = strlen(cur))) |
827 | cur += len+1; |
828 | } |
829 | FreeEnvironmentStrings(envv); |
f2517201 |
830 | # else |
831 | # ifndef PERL_USE_SAFE_PUTENV |
66b1d557 |
832 | I32 i; |
833 | |
3280af22 |
834 | if (environ == PL_origenviron) |
f2517201 |
835 | environ = (char**)safesysmalloc(sizeof(char*)); |
66b1d557 |
836 | else |
837 | for (i = 0; environ[i]; i++) |
f2517201 |
838 | safesysfree(environ[i]); |
839 | # endif /* PERL_USE_SAFE_PUTENV */ |
840 | |
66b1d557 |
841 | environ[0] = Nullch; |
842 | |
f2517201 |
843 | # endif /* WIN32 */ |
844 | #endif /* VMS */ |
3e3baf6d |
845 | return 0; |
66b1d557 |
846 | } |
847 | |
848 | int |
864dbfa3 |
849 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a |
850 | { |
851 | I32 i; |
2d8e6c8d |
852 | STRLEN n_a; |
88e89b8a |
853 | /* Are we fetching a signal entry? */ |
2d8e6c8d |
854 | i = whichsig(MgPV(mg,n_a)); |
88e89b8a |
855 | if (i) { |
22c35a8c |
856 | if(PL_psig_ptr[i]) |
857 | sv_setsv(sv,PL_psig_ptr[i]); |
88e89b8a |
858 | else { |
ff68c719 |
859 | Sighandler_t sigstate = rsignal_state(i); |
860 | |
88e89b8a |
861 | /* cache state so we don't fetch it again */ |
ff68c719 |
862 | if(sigstate == SIG_IGN) |
88e89b8a |
863 | sv_setpv(sv,"IGNORE"); |
864 | else |
3280af22 |
865 | sv_setsv(sv,&PL_sv_undef); |
22c35a8c |
866 | PL_psig_ptr[i] = SvREFCNT_inc(sv); |
88e89b8a |
867 | SvTEMP_off(sv); |
868 | } |
869 | } |
870 | return 0; |
871 | } |
872 | int |
864dbfa3 |
873 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a |
874 | { |
875 | I32 i; |
2d8e6c8d |
876 | STRLEN n_a; |
88e89b8a |
877 | /* Are we clearing a signal entry? */ |
2d8e6c8d |
878 | i = whichsig(MgPV(mg,n_a)); |
88e89b8a |
879 | if (i) { |
22c35a8c |
880 | if(PL_psig_ptr[i]) { |
881 | SvREFCNT_dec(PL_psig_ptr[i]); |
882 | PL_psig_ptr[i]=0; |
88e89b8a |
883 | } |
22c35a8c |
884 | if(PL_psig_name[i]) { |
885 | SvREFCNT_dec(PL_psig_name[i]); |
886 | PL_psig_name[i]=0; |
88e89b8a |
887 | } |
888 | } |
889 | return 0; |
890 | } |
3d37d572 |
891 | |
85e6fe83 |
892 | int |
864dbfa3 |
893 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
894 | { |
11343788 |
895 | dTHR; |
79072805 |
896 | register char *s; |
897 | I32 i; |
748a9306 |
898 | SV** svp; |
e72dc28c |
899 | STRLEN len; |
a0d0e21e |
900 | |
e72dc28c |
901 | s = MgPV(mg,len); |
748a9306 |
902 | if (*s == '_') { |
903 | if (strEQ(s,"__DIE__")) |
3280af22 |
904 | svp = &PL_diehook; |
748a9306 |
905 | else if (strEQ(s,"__WARN__")) |
3280af22 |
906 | svp = &PL_warnhook; |
748a9306 |
907 | else if (strEQ(s,"__PARSE__")) |
3280af22 |
908 | svp = &PL_parsehook; |
748a9306 |
909 | else |
cea2e8a9 |
910 | Perl_croak(aTHX_ "No such hook: %s", s); |
748a9306 |
911 | i = 0; |
4633a7c4 |
912 | if (*svp) { |
913 | SvREFCNT_dec(*svp); |
914 | *svp = 0; |
915 | } |
748a9306 |
916 | } |
917 | else { |
918 | i = whichsig(s); /* ...no, a brick */ |
919 | if (!i) { |
599cee73 |
920 | if (ckWARN(WARN_SIGNAL) || strEQ(s,"ALARM")) |
cea2e8a9 |
921 | Perl_warner(aTHX_ WARN_SIGNAL, "No such signal: SIG%s", s); |
748a9306 |
922 | return 0; |
923 | } |
22c35a8c |
924 | SvREFCNT_dec(PL_psig_name[i]); |
925 | SvREFCNT_dec(PL_psig_ptr[i]); |
926 | PL_psig_ptr[i] = SvREFCNT_inc(sv); |
88e89b8a |
927 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ |
e72dc28c |
928 | PL_psig_name[i] = newSVpvn(s, len); |
22c35a8c |
929 | SvREADONLY_on(PL_psig_name[i]); |
748a9306 |
930 | } |
a0d0e21e |
931 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
748a9306 |
932 | if (i) |
3280af22 |
933 | (void)rsignal(i, PL_sighandlerp); |
748a9306 |
934 | else |
935 | *svp = SvREFCNT_inc(sv); |
a0d0e21e |
936 | return 0; |
937 | } |
e72dc28c |
938 | s = SvPV_force(sv,len); |
748a9306 |
939 | if (strEQ(s,"IGNORE")) { |
940 | if (i) |
ff68c719 |
941 | (void)rsignal(i, SIG_IGN); |
748a9306 |
942 | else |
943 | *svp = 0; |
944 | } |
945 | else if (strEQ(s,"DEFAULT") || !*s) { |
946 | if (i) |
ff68c719 |
947 | (void)rsignal(i, SIG_DFL); |
748a9306 |
948 | else |
949 | *svp = 0; |
950 | } |
79072805 |
951 | else { |
5aabfad6 |
952 | /* |
953 | * We should warn if HINT_STRICT_REFS, but without |
954 | * access to a known hint bit in a known OP, we can't |
955 | * tell whether HINT_STRICT_REFS is in force or not. |
956 | */ |
46fc3d4c |
957 | if (!strchr(s,':') && !strchr(s,'\'')) |
e72dc28c |
958 | sv_insert(sv, 0, 0, "main::", 6); |
748a9306 |
959 | if (i) |
3280af22 |
960 | (void)rsignal(i, PL_sighandlerp); |
748a9306 |
961 | else |
962 | *svp = SvREFCNT_inc(sv); |
79072805 |
963 | } |
964 | return 0; |
965 | } |
966 | |
967 | int |
864dbfa3 |
968 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
969 | { |
3280af22 |
970 | PL_sub_generation++; |
463ee0b2 |
971 | return 0; |
972 | } |
973 | |
974 | int |
864dbfa3 |
975 | Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 |
976 | { |
a0d0e21e |
977 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
3280af22 |
978 | PL_amagic_generation++; |
463ee0b2 |
979 | |
a0d0e21e |
980 | return 0; |
981 | } |
463ee0b2 |
982 | |
946ec16e |
983 | int |
864dbfa3 |
984 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 |
985 | { |
986 | HV *hv = (HV*)LvTARG(sv); |
987 | HE *entry; |
988 | I32 i = 0; |
989 | |
990 | if (hv) { |
991 | (void) hv_iterinit(hv); |
33c27489 |
992 | if (! SvTIED_mg((SV*)hv, 'P')) |
6ff81951 |
993 | i = HvKEYS(hv); |
994 | else { |
995 | /*SUPPRESS 560*/ |
996 | while (entry = hv_iternext(hv)) { |
997 | i++; |
998 | } |
999 | } |
1000 | } |
1001 | |
1002 | sv_setiv(sv, (IV)i); |
1003 | return 0; |
1004 | } |
1005 | |
1006 | int |
864dbfa3 |
1007 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e |
1008 | { |
1009 | if (LvTARG(sv)) { |
1010 | hv_ksplit((HV*)LvTARG(sv), SvIV(sv)); |
946ec16e |
1011 | } |
1012 | return 0; |
93965878 |
1013 | } |
946ec16e |
1014 | |
e336de0d |
1015 | /* caller is responsible for stack switching/cleanup */ |
565764a8 |
1016 | STATIC int |
cea2e8a9 |
1017 | S_magic_methcall(pTHX_ SV *sv, MAGIC *mg, char *meth, I32 flags, int n, SV *val) |
a0d0e21e |
1018 | { |
1019 | dSP; |
463ee0b2 |
1020 | |
924508f0 |
1021 | PUSHMARK(SP); |
1022 | EXTEND(SP, n); |
33c27489 |
1023 | PUSHs(SvTIED_obj(sv, mg)); |
93965878 |
1024 | if (n > 1) { |
1025 | if (mg->mg_ptr) { |
565764a8 |
1026 | if (mg->mg_len >= 0) |
79cb57f6 |
1027 | PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len))); |
565764a8 |
1028 | else if (mg->mg_len == HEf_SVKEY) |
93965878 |
1029 | PUSHs((SV*)mg->mg_ptr); |
1030 | } |
1031 | else if (mg->mg_type == 'p') { |
565764a8 |
1032 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); |
93965878 |
1033 | } |
1034 | } |
1035 | if (n > 2) { |
1036 | PUSHs(val); |
88e89b8a |
1037 | } |
463ee0b2 |
1038 | PUTBACK; |
1039 | |
864dbfa3 |
1040 | return call_method(meth, flags); |
946ec16e |
1041 | } |
1042 | |
76e3520e |
1043 | STATIC int |
cea2e8a9 |
1044 | S_magic_methpack(pTHX_ SV *sv, MAGIC *mg, char *meth) |
a0d0e21e |
1045 | { |
1046 | dSP; |
463ee0b2 |
1047 | |
a0d0e21e |
1048 | ENTER; |
1049 | SAVETMPS; |
e788e7d3 |
1050 | PUSHSTACKi(PERLSI_MAGIC); |
463ee0b2 |
1051 | |
33c27489 |
1052 | if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) { |
3280af22 |
1053 | sv_setsv(sv, *PL_stack_sp--); |
93965878 |
1054 | } |
463ee0b2 |
1055 | |
d3acc0f7 |
1056 | POPSTACK; |
a0d0e21e |
1057 | FREETMPS; |
1058 | LEAVE; |
1059 | return 0; |
1060 | } |
463ee0b2 |
1061 | |
a0d0e21e |
1062 | int |
864dbfa3 |
1063 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e |
1064 | { |
1065 | magic_methpack(sv,mg,"FETCH"); |
1066 | if (mg->mg_ptr) |
1067 | mg->mg_flags |= MGf_GSKIP; |
463ee0b2 |
1068 | return 0; |
1069 | } |
1070 | |
1071 | int |
864dbfa3 |
1072 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d |
1073 | { |
1074 | dSP; |
a60c0954 |
1075 | ENTER; |
e788e7d3 |
1076 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 |
1077 | magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv); |
d3acc0f7 |
1078 | POPSTACK; |
a60c0954 |
1079 | LEAVE; |
463ee0b2 |
1080 | return 0; |
1081 | } |
1082 | |
1083 | int |
864dbfa3 |
1084 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 |
1085 | { |
a0d0e21e |
1086 | return magic_methpack(sv,mg,"DELETE"); |
1087 | } |
463ee0b2 |
1088 | |
93965878 |
1089 | |
1090 | U32 |
864dbfa3 |
1091 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
93965878 |
1092 | { |
e336de0d |
1093 | dSP; |
93965878 |
1094 | U32 retval = 0; |
1095 | |
1096 | ENTER; |
1097 | SAVETMPS; |
e788e7d3 |
1098 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 |
1099 | if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) { |
3280af22 |
1100 | sv = *PL_stack_sp--; |
a60c0954 |
1101 | retval = (U32) SvIV(sv)-1; |
93965878 |
1102 | } |
d3acc0f7 |
1103 | POPSTACK; |
93965878 |
1104 | FREETMPS; |
1105 | LEAVE; |
1106 | return retval; |
1107 | } |
1108 | |
cea2e8a9 |
1109 | int |
1110 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e |
1111 | { |
1112 | dSP; |
463ee0b2 |
1113 | |
e336de0d |
1114 | ENTER; |
e788e7d3 |
1115 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 |
1116 | PUSHMARK(SP); |
33c27489 |
1117 | XPUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 |
1118 | PUTBACK; |
864dbfa3 |
1119 | call_method("CLEAR", G_SCALAR|G_DISCARD); |
d3acc0f7 |
1120 | POPSTACK; |
a60c0954 |
1121 | LEAVE; |
463ee0b2 |
1122 | return 0; |
1123 | } |
1124 | |
1125 | int |
864dbfa3 |
1126 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 |
1127 | { |
463ee0b2 |
1128 | dSP; |
a0d0e21e |
1129 | char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 |
1130 | |
1131 | ENTER; |
a0d0e21e |
1132 | SAVETMPS; |
e788e7d3 |
1133 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 |
1134 | PUSHMARK(SP); |
1135 | EXTEND(SP, 2); |
33c27489 |
1136 | PUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 |
1137 | if (SvOK(key)) |
1138 | PUSHs(key); |
1139 | PUTBACK; |
1140 | |
864dbfa3 |
1141 | if (call_method(meth, G_SCALAR)) |
3280af22 |
1142 | sv_setsv(key, *PL_stack_sp--); |
463ee0b2 |
1143 | |
d3acc0f7 |
1144 | POPSTACK; |
a0d0e21e |
1145 | FREETMPS; |
1146 | LEAVE; |
79072805 |
1147 | return 0; |
1148 | } |
1149 | |
1150 | int |
864dbfa3 |
1151 | Perl_magic_existspack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e |
1152 | { |
1153 | return magic_methpack(sv,mg,"EXISTS"); |
1154 | } |
1155 | |
1156 | int |
864dbfa3 |
1157 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1158 | { |
11343788 |
1159 | dTHR; |
79072805 |
1160 | OP *o; |
1161 | I32 i; |
1162 | GV* gv; |
1163 | SV** svp; |
2d8e6c8d |
1164 | STRLEN n_a; |
79072805 |
1165 | |
3280af22 |
1166 | gv = PL_DBline; |
79072805 |
1167 | i = SvTRUE(sv); |
188ea221 |
1168 | svp = av_fetch(GvAV(gv), |
2d8e6c8d |
1169 | atoi(MgPV(mg,n_a)), FALSE); |
8990e307 |
1170 | if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp))) |
93a17b20 |
1171 | o->op_private = i; |
0453d815 |
1172 | else if (ckWARN_d(WARN_INTERNAL)) |
1173 | Perl_warner(aTHX_ WARN_INTERNAL, "Can't break at that line\n"); |
79072805 |
1174 | return 0; |
1175 | } |
1176 | |
1177 | int |
864dbfa3 |
1178 | Perl_magic_getarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1179 | { |
0f15f207 |
1180 | dTHR; |
3280af22 |
1181 | sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase); |
79072805 |
1182 | return 0; |
1183 | } |
1184 | |
1185 | int |
864dbfa3 |
1186 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1187 | { |
0f15f207 |
1188 | dTHR; |
3280af22 |
1189 | av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase); |
a0d0e21e |
1190 | return 0; |
1191 | } |
1192 | |
1193 | int |
864dbfa3 |
1194 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e |
1195 | { |
1196 | SV* lsv = LvTARG(sv); |
1197 | |
1198 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
1199 | mg = mg_find(lsv, 'g'); |
565764a8 |
1200 | if (mg && mg->mg_len >= 0) { |
0f15f207 |
1201 | dTHR; |
a0ed51b3 |
1202 | I32 i = mg->mg_len; |
1203 | if (IN_UTF8) |
1204 | sv_pos_b2u(lsv, &i); |
1205 | sv_setiv(sv, i + PL_curcop->cop_arybase); |
a0d0e21e |
1206 | return 0; |
1207 | } |
1208 | } |
1209 | (void)SvOK_off(sv); |
1210 | return 0; |
1211 | } |
1212 | |
1213 | int |
864dbfa3 |
1214 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e |
1215 | { |
1216 | SV* lsv = LvTARG(sv); |
1217 | SSize_t pos; |
1218 | STRLEN len; |
a0ed51b3 |
1219 | STRLEN ulen; |
c485e607 |
1220 | dTHR; |
a0d0e21e |
1221 | |
1222 | mg = 0; |
1223 | |
1224 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
1225 | mg = mg_find(lsv, 'g'); |
1226 | if (!mg) { |
1227 | if (!SvOK(sv)) |
1228 | return 0; |
1229 | sv_magic(lsv, (SV*)0, 'g', Nullch, 0); |
1230 | mg = mg_find(lsv, 'g'); |
1231 | } |
1232 | else if (!SvOK(sv)) { |
565764a8 |
1233 | mg->mg_len = -1; |
a0d0e21e |
1234 | return 0; |
1235 | } |
1236 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); |
1237 | |
c485e607 |
1238 | pos = SvIV(sv) - PL_curcop->cop_arybase; |
a0ed51b3 |
1239 | |
1240 | if (IN_UTF8) { |
1241 | ulen = sv_len_utf8(lsv); |
1242 | if (ulen) |
1243 | len = ulen; |
1244 | else |
1245 | ulen = 0; |
1246 | } |
1247 | |
a0d0e21e |
1248 | if (pos < 0) { |
1249 | pos += len; |
1250 | if (pos < 0) |
1251 | pos = 0; |
1252 | } |
1253 | else if (pos > len) |
1254 | pos = len; |
a0ed51b3 |
1255 | |
1256 | if (ulen) { |
1257 | I32 p = pos; |
1258 | sv_pos_u2b(lsv, &p, 0); |
1259 | pos = p; |
1260 | } |
1261 | |
565764a8 |
1262 | mg->mg_len = pos; |
71be2cbc |
1263 | mg->mg_flags &= ~MGf_MINMATCH; |
a0d0e21e |
1264 | |
79072805 |
1265 | return 0; |
1266 | } |
1267 | |
1268 | int |
864dbfa3 |
1269 | Perl_magic_getglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1270 | { |
8646b087 |
1271 | if (SvFAKE(sv)) { /* FAKE globs can get coerced */ |
1272 | SvFAKE_off(sv); |
946ec16e |
1273 | gv_efullname3(sv,((GV*)sv), "*"); |
8646b087 |
1274 | SvFAKE_on(sv); |
1275 | } |
1276 | else |
946ec16e |
1277 | gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */ |
79072805 |
1278 | return 0; |
1279 | } |
1280 | |
1281 | int |
864dbfa3 |
1282 | Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1283 | { |
1284 | register char *s; |
1285 | GV* gv; |
2d8e6c8d |
1286 | STRLEN n_a; |
79072805 |
1287 | |
1288 | if (!SvOK(sv)) |
1289 | return 0; |
2d8e6c8d |
1290 | s = SvPV(sv, n_a); |
79072805 |
1291 | if (*s == '*' && s[1]) |
1292 | s++; |
85e6fe83 |
1293 | gv = gv_fetchpv(s,TRUE, SVt_PVGV); |
79072805 |
1294 | if (sv == (SV*)gv) |
1295 | return 0; |
1296 | if (GvGP(sv)) |
88e89b8a |
1297 | gp_free((GV*)sv); |
79072805 |
1298 | GvGP(sv) = gp_ref(GvGP(gv)); |
79072805 |
1299 | return 0; |
1300 | } |
1301 | |
1302 | int |
864dbfa3 |
1303 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 |
1304 | { |
1305 | STRLEN len; |
1306 | SV *lsv = LvTARG(sv); |
1307 | char *tmps = SvPV(lsv,len); |
1308 | I32 offs = LvTARGOFF(sv); |
1309 | I32 rem = LvTARGLEN(sv); |
1310 | |
1311 | if (offs > len) |
1312 | offs = len; |
1313 | if (rem + offs > len) |
1314 | rem = len - offs; |
1315 | sv_setpvn(sv, tmps + offs, (STRLEN)rem); |
1316 | return 0; |
1317 | } |
1318 | |
1319 | int |
864dbfa3 |
1320 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1321 | { |
8990e307 |
1322 | STRLEN len; |
1323 | char *tmps = SvPV(sv,len); |
1324 | sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len); |
79072805 |
1325 | return 0; |
1326 | } |
1327 | |
1328 | int |
864dbfa3 |
1329 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 |
1330 | { |
a863c7d1 |
1331 | dTHR; |
565764a8 |
1332 | TAINT_IF((mg->mg_len & 1) || |
1333 | (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */ |
463ee0b2 |
1334 | return 0; |
1335 | } |
1336 | |
1337 | int |
864dbfa3 |
1338 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 |
1339 | { |
11343788 |
1340 | dTHR; |
3280af22 |
1341 | if (PL_localizing) { |
1342 | if (PL_localizing == 1) |
565764a8 |
1343 | mg->mg_len <<= 1; |
748a9306 |
1344 | else |
565764a8 |
1345 | mg->mg_len >>= 1; |
a0d0e21e |
1346 | } |
3280af22 |
1347 | else if (PL_tainted) |
565764a8 |
1348 | mg->mg_len |= 1; |
748a9306 |
1349 | else |
565764a8 |
1350 | mg->mg_len &= ~1; |
463ee0b2 |
1351 | return 0; |
1352 | } |
1353 | |
1354 | int |
864dbfa3 |
1355 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 |
1356 | { |
1357 | SV *lsv = LvTARG(sv); |
1358 | unsigned char *s; |
1359 | unsigned long retnum; |
1360 | STRLEN lsvlen; |
1361 | I32 len; |
1362 | I32 offset; |
1363 | I32 size; |
1364 | |
1365 | if (!lsv) { |
1366 | SvOK_off(sv); |
1367 | return 0; |
1368 | } |
1369 | s = (unsigned char *) SvPV(lsv, lsvlen); |
1370 | offset = LvTARGOFF(sv); |
1371 | size = LvTARGLEN(sv); |
1372 | len = (offset + size + 7) / 8; |
1373 | |
1374 | /* Copied from pp_vec() */ |
1375 | |
1376 | if (len > lsvlen) { |
1377 | if (size <= 8) |
1378 | retnum = 0; |
1379 | else { |
1380 | offset >>= 3; |
1381 | if (size == 16) { |
1382 | if (offset >= lsvlen) |
1383 | retnum = 0; |
1384 | else |
1385 | retnum = (unsigned long) s[offset] << 8; |
1386 | } |
1387 | else if (size == 32) { |
1388 | if (offset >= lsvlen) |
1389 | retnum = 0; |
1390 | else if (offset + 1 >= lsvlen) |
1391 | retnum = (unsigned long) s[offset] << 24; |
1392 | else if (offset + 2 >= lsvlen) |
1393 | retnum = ((unsigned long) s[offset] << 24) + |
1394 | ((unsigned long) s[offset + 1] << 16); |
1395 | else |
1396 | retnum = ((unsigned long) s[offset] << 24) + |
1397 | ((unsigned long) s[offset + 1] << 16) + |
1398 | (s[offset + 2] << 8); |
1399 | } |
1400 | } |
1401 | } |
1402 | else if (size < 8) |
1403 | retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1); |
1404 | else { |
1405 | offset >>= 3; |
1406 | if (size == 8) |
1407 | retnum = s[offset]; |
1408 | else if (size == 16) |
1409 | retnum = ((unsigned long) s[offset] << 8) + s[offset+1]; |
1410 | else if (size == 32) |
1411 | retnum = ((unsigned long) s[offset] << 24) + |
1412 | ((unsigned long) s[offset + 1] << 16) + |
1413 | (s[offset + 2] << 8) + s[offset+3]; |
1414 | } |
1415 | |
1416 | sv_setuv(sv, (UV)retnum); |
1417 | return 0; |
1418 | } |
1419 | |
1420 | int |
864dbfa3 |
1421 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1422 | { |
1423 | do_vecset(sv); /* XXX slurp this routine */ |
1424 | return 0; |
1425 | } |
1426 | |
1427 | int |
864dbfa3 |
1428 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc |
1429 | { |
71be2cbc |
1430 | SV *targ = Nullsv; |
5f05dabc |
1431 | if (LvTARGLEN(sv)) { |
68dc0745 |
1432 | if (mg->mg_obj) { |
74e13ce4 |
1433 | SV *ahv = LvTARG(sv); |
1434 | if (SvTYPE(ahv) == SVt_PVHV) { |
1435 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0); |
1436 | if (he) |
1437 | targ = HeVAL(he); |
1438 | } |
1439 | else { |
1440 | SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, FALSE, 0); |
1441 | if (svp) |
1442 | targ = *svp; |
1443 | } |
68dc0745 |
1444 | } |
1445 | else { |
3c78fafa |
1446 | AV* av = (AV*)LvTARG(sv); |
68dc0745 |
1447 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
1448 | targ = AvARRAY(av)[LvTARGOFF(sv)]; |
1449 | } |
3280af22 |
1450 | if (targ && targ != &PL_sv_undef) { |
e858de61 |
1451 | dTHR; /* just for SvREFCNT_dec */ |
68dc0745 |
1452 | /* somebody else defined it for us */ |
1453 | SvREFCNT_dec(LvTARG(sv)); |
1454 | LvTARG(sv) = SvREFCNT_inc(targ); |
1455 | LvTARGLEN(sv) = 0; |
1456 | SvREFCNT_dec(mg->mg_obj); |
1457 | mg->mg_obj = Nullsv; |
1458 | mg->mg_flags &= ~MGf_REFCOUNTED; |
1459 | } |
5f05dabc |
1460 | } |
71be2cbc |
1461 | else |
1462 | targ = LvTARG(sv); |
3280af22 |
1463 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc |
1464 | return 0; |
1465 | } |
1466 | |
1467 | int |
864dbfa3 |
1468 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc |
1469 | { |
1470 | if (LvTARGLEN(sv)) |
68dc0745 |
1471 | vivify_defelem(sv); |
1472 | if (LvTARG(sv)) { |
5f05dabc |
1473 | sv_setsv(LvTARG(sv), sv); |
68dc0745 |
1474 | SvSETMAGIC(LvTARG(sv)); |
1475 | } |
5f05dabc |
1476 | return 0; |
1477 | } |
1478 | |
71be2cbc |
1479 | void |
864dbfa3 |
1480 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc |
1481 | { |
e858de61 |
1482 | dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/ |
74e13ce4 |
1483 | MAGIC *mg; |
1484 | SV *value = Nullsv; |
71be2cbc |
1485 | |
68dc0745 |
1486 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y'))) |
71be2cbc |
1487 | return; |
68dc0745 |
1488 | if (mg->mg_obj) { |
74e13ce4 |
1489 | SV *ahv = LvTARG(sv); |
2d8e6c8d |
1490 | STRLEN n_a; |
74e13ce4 |
1491 | if (SvTYPE(ahv) == SVt_PVHV) { |
af7f9c15 |
1492 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0); |
74e13ce4 |
1493 | if (he) |
1494 | value = HeVAL(he); |
1495 | } |
1496 | else { |
af7f9c15 |
1497 | SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, TRUE, 0); |
74e13ce4 |
1498 | if (svp) |
1499 | value = *svp; |
1500 | } |
3280af22 |
1501 | if (!value || value == &PL_sv_undef) |
cea2e8a9 |
1502 | Perl_croak(aTHX_ PL_no_helem, SvPV(mg->mg_obj, n_a)); |
71be2cbc |
1503 | } |
68dc0745 |
1504 | else { |
1505 | AV* av = (AV*)LvTARG(sv); |
5aabfad6 |
1506 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
68dc0745 |
1507 | LvTARG(sv) = Nullsv; /* array can't be extended */ |
1508 | else { |
1509 | SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE); |
3280af22 |
1510 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 |
1511 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 |
1512 | } |
1513 | } |
3e3baf6d |
1514 | (void)SvREFCNT_inc(value); |
68dc0745 |
1515 | SvREFCNT_dec(LvTARG(sv)); |
1516 | LvTARG(sv) = value; |
71be2cbc |
1517 | LvTARGLEN(sv) = 0; |
68dc0745 |
1518 | SvREFCNT_dec(mg->mg_obj); |
1519 | mg->mg_obj = Nullsv; |
1520 | mg->mg_flags &= ~MGf_REFCOUNTED; |
5f05dabc |
1521 | } |
1522 | |
1523 | int |
864dbfa3 |
1524 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 |
1525 | { |
1526 | AV *av = (AV*)mg->mg_obj; |
1527 | SV **svp = AvARRAY(av); |
1528 | I32 i = AvFILLp(av); |
1529 | while (i >= 0) { |
1530 | if (svp[i] && svp[i] != &PL_sv_undef) { |
1531 | if (!SvWEAKREF(svp[i])) |
cea2e8a9 |
1532 | Perl_croak(aTHX_ "panic: magic_killbackrefs"); |
810b8aa5 |
1533 | /* XXX Should we check that it hasn't changed? */ |
1534 | SvRV(svp[i]) = 0; |
1535 | SvOK_off(svp[i]); |
1536 | SvWEAKREF_off(svp[i]); |
1537 | svp[i] = &PL_sv_undef; |
1538 | } |
1539 | i--; |
1540 | } |
1541 | return 0; |
1542 | } |
1543 | |
1544 | int |
864dbfa3 |
1545 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 |
1546 | { |
565764a8 |
1547 | mg->mg_len = -1; |
c6496cc7 |
1548 | SvSCREAM_off(sv); |
93a17b20 |
1549 | return 0; |
1550 | } |
1551 | |
1552 | int |
864dbfa3 |
1553 | Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1554 | { |
463ee0b2 |
1555 | sv_unmagic(sv, 'B'); |
79072805 |
1556 | SvVALID_off(sv); |
1557 | return 0; |
1558 | } |
1559 | |
1560 | int |
864dbfa3 |
1561 | Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg) |
55497cff |
1562 | { |
1563 | sv_unmagic(sv, 'f'); |
1564 | SvCOMPILED_off(sv); |
1565 | return 0; |
1566 | } |
1567 | |
1568 | int |
864dbfa3 |
1569 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1570 | { |
1571 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; |
1572 | |
1573 | if (uf && uf->uf_set) |
1574 | (*uf->uf_set)(uf->uf_index, sv); |
1575 | return 0; |
1576 | } |
1577 | |
c277df42 |
1578 | int |
864dbfa3 |
1579 | Perl_magic_freeregexp(pTHX_ SV *sv, MAGIC *mg) |
c277df42 |
1580 | { |
1581 | regexp *re = (regexp *)mg->mg_obj; |
1582 | ReREFCNT_dec(re); |
1583 | return 0; |
1584 | } |
1585 | |
7a4c00b4 |
1586 | #ifdef USE_LOCALE_COLLATE |
79072805 |
1587 | int |
864dbfa3 |
1588 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 |
1589 | { |
1590 | /* |
838b5b74 |
1591 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 |
1592 | * and vanished with a faint plop. |
1593 | */ |
7a4c00b4 |
1594 | if (mg->mg_ptr) { |
1595 | Safefree(mg->mg_ptr); |
1596 | mg->mg_ptr = NULL; |
565764a8 |
1597 | mg->mg_len = -1; |
7a4c00b4 |
1598 | } |
bbce6d69 |
1599 | return 0; |
1600 | } |
7a4c00b4 |
1601 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 |
1602 | |
1603 | int |
864dbfa3 |
1604 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1605 | { |
11343788 |
1606 | dTHR; |
79072805 |
1607 | register char *s; |
1608 | I32 i; |
8990e307 |
1609 | STRLEN len; |
79072805 |
1610 | switch (*mg->mg_ptr) { |
748a9306 |
1611 | case '\001': /* ^A */ |
3280af22 |
1612 | sv_setsv(PL_bodytarget, sv); |
748a9306 |
1613 | break; |
599cee73 |
1614 | case '\002': /* ^B */ |
1615 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
0453d815 |
1616 | if (memEQ(SvPVX(sv), WARN_ALLstring, WARNsize)) { |
e24b16f9 |
1617 | PL_compiling.cop_warnings = WARN_ALL; |
0453d815 |
1618 | PL_dowarn |= G_WARN_ONCE ; |
1619 | } |
599cee73 |
1620 | else if (memEQ(SvPVX(sv), WARN_NONEstring, WARNsize)) |
e24b16f9 |
1621 | PL_compiling.cop_warnings = WARN_NONE; |
599cee73 |
1622 | else { |
0453d815 |
1623 | if (specialWARN(PL_compiling.cop_warnings)) |
e24b16f9 |
1624 | PL_compiling.cop_warnings = newSVsv(sv) ; |
0453d815 |
1625 | else |
1626 | sv_setsv(PL_compiling.cop_warnings, sv); |
1627 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) |
1628 | PL_dowarn |= G_WARN_ONCE ; |
599cee73 |
1629 | } |
1630 | } |
1631 | break; |
49460fe6 |
1632 | |
1633 | case '\003': /* ^C */ |
1634 | PL_minus_c = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1635 | break; |
1636 | |
79072805 |
1637 | case '\004': /* ^D */ |
3280af22 |
1638 | PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000; |
79072805 |
1639 | DEBUG_x(dump_all()); |
1640 | break; |
28f23441 |
1641 | case '\005': /* ^E */ |
1642 | #ifdef VMS |
1643 | set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
1644 | #else |
048c1ddf |
1645 | # ifdef WIN32 |
22fae026 |
1646 | SetLastError( SvIV(sv) ); |
048c1ddf |
1647 | # else |
1648 | # ifndef OS2 |
f86702cc |
1649 | /* will anyone ever use this? */ |
1650 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4); |
048c1ddf |
1651 | # endif |
1652 | # endif |
22fae026 |
1653 | #endif |
28f23441 |
1654 | break; |
79072805 |
1655 | case '\006': /* ^F */ |
3280af22 |
1656 | PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1657 | break; |
a0d0e21e |
1658 | case '\010': /* ^H */ |
3280af22 |
1659 | PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
a0d0e21e |
1660 | break; |
9d116dd7 |
1661 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 |
1662 | if (PL_inplace) |
1663 | Safefree(PL_inplace); |
79072805 |
1664 | if (SvOK(sv)) |
2d8e6c8d |
1665 | PL_inplace = savepv(SvPV(sv,len)); |
79072805 |
1666 | else |
3280af22 |
1667 | PL_inplace = Nullch; |
79072805 |
1668 | break; |
28f23441 |
1669 | case '\017': /* ^O */ |
3280af22 |
1670 | if (PL_osname) |
1671 | Safefree(PL_osname); |
28f23441 |
1672 | if (SvOK(sv)) |
2d8e6c8d |
1673 | PL_osname = savepv(SvPV(sv,len)); |
28f23441 |
1674 | else |
3280af22 |
1675 | PL_osname = Nullch; |
28f23441 |
1676 | break; |
79072805 |
1677 | case '\020': /* ^P */ |
3280af22 |
1678 | PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1679 | break; |
1680 | case '\024': /* ^T */ |
88e89b8a |
1681 | #ifdef BIG_TIME |
6b88bc9c |
1682 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a |
1683 | #else |
3280af22 |
1684 | PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
88e89b8a |
1685 | #endif |
79072805 |
1686 | break; |
1687 | case '\027': /* ^W */ |
599cee73 |
1688 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
1689 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
0453d815 |
1690 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
1691 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
599cee73 |
1692 | } |
79072805 |
1693 | break; |
1694 | case '.': |
3280af22 |
1695 | if (PL_localizing) { |
1696 | if (PL_localizing == 1) |
1697 | save_sptr((SV**)&PL_last_in_gv); |
748a9306 |
1698 | } |
3280af22 |
1699 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
1700 | IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv); |
79072805 |
1701 | break; |
1702 | case '^': |
3280af22 |
1703 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
2d8e6c8d |
1704 | IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len)); |
3280af22 |
1705 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 |
1706 | break; |
1707 | case '~': |
3280af22 |
1708 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
2d8e6c8d |
1709 | IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len)); |
3280af22 |
1710 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 |
1711 | break; |
1712 | case '=': |
3280af22 |
1713 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 |
1714 | break; |
1715 | case '-': |
3280af22 |
1716 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
1717 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) |
1718 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; |
79072805 |
1719 | break; |
1720 | case '%': |
3280af22 |
1721 | IoPAGE(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 |
1722 | break; |
1723 | case '|': |
4b65379b |
1724 | { |
3280af22 |
1725 | IO *io = GvIOp(PL_defoutgv); |
4b65379b |
1726 | if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0) |
1727 | IoFLAGS(io) &= ~IOf_FLUSH; |
1728 | else { |
1729 | if (!(IoFLAGS(io) & IOf_FLUSH)) { |
1730 | PerlIO *ofp = IoOFP(io); |
1731 | if (ofp) |
1732 | (void)PerlIO_flush(ofp); |
1733 | IoFLAGS(io) |= IOf_FLUSH; |
1734 | } |
1735 | } |
79072805 |
1736 | } |
1737 | break; |
1738 | case '*': |
463ee0b2 |
1739 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
3280af22 |
1740 | PL_multiline = (i != 0); |
79072805 |
1741 | break; |
1742 | case '/': |
3280af22 |
1743 | SvREFCNT_dec(PL_nrs); |
1744 | PL_nrs = newSVsv(sv); |
1745 | SvREFCNT_dec(PL_rs); |
1746 | PL_rs = SvREFCNT_inc(PL_nrs); |
79072805 |
1747 | break; |
1748 | case '\\': |
3280af22 |
1749 | if (PL_ors) |
1750 | Safefree(PL_ors); |
e3c19b7b |
1751 | if (SvOK(sv) || SvGMAGICAL(sv)) |
3280af22 |
1752 | PL_ors = savepv(SvPV(sv,PL_orslen)); |
e3c19b7b |
1753 | else { |
3280af22 |
1754 | PL_ors = Nullch; |
1755 | PL_orslen = 0; |
e3c19b7b |
1756 | } |
79072805 |
1757 | break; |
1758 | case ',': |
3280af22 |
1759 | if (PL_ofs) |
1760 | Safefree(PL_ofs); |
1761 | PL_ofs = savepv(SvPV(sv, PL_ofslen)); |
79072805 |
1762 | break; |
1763 | case '#': |
3280af22 |
1764 | if (PL_ofmt) |
1765 | Safefree(PL_ofmt); |
2d8e6c8d |
1766 | PL_ofmt = savepv(SvPV(sv,len)); |
79072805 |
1767 | break; |
1768 | case '[': |
3280af22 |
1769 | PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1770 | break; |
1771 | case '?': |
ff0cee69 |
1772 | #ifdef COMPLEX_STATUS |
6b88bc9c |
1773 | if (PL_localizing == 2) { |
1774 | PL_statusvalue = LvTARGOFF(sv); |
1775 | PL_statusvalue_vms = LvTARGLEN(sv); |
ff0cee69 |
1776 | } |
1777 | else |
1778 | #endif |
1779 | #ifdef VMSISH_STATUS |
1780 | if (VMSISH_STATUS) |
1781 | STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv))); |
1782 | else |
1783 | #endif |
1784 | STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 |
1785 | break; |
1786 | case '!': |
78987ded |
1787 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
f86702cc |
1788 | (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno); |
79072805 |
1789 | break; |
1790 | case '<': |
3280af22 |
1791 | PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1792 | if (PL_delaymagic) { |
1793 | PL_delaymagic |= DM_RUID; |
79072805 |
1794 | break; /* don't do magic till later */ |
1795 | } |
1796 | #ifdef HAS_SETRUID |
b28d0864 |
1797 | (void)setruid((Uid_t)PL_uid); |
79072805 |
1798 | #else |
1799 | #ifdef HAS_SETREUID |
3280af22 |
1800 | (void)setreuid((Uid_t)PL_uid, (Uid_t)-1); |
748a9306 |
1801 | #else |
85e6fe83 |
1802 | #ifdef HAS_SETRESUID |
b28d0864 |
1803 | (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 |
1804 | #else |
b28d0864 |
1805 | if (PL_uid == PL_euid) /* special case $< = $> */ |
1806 | (void)PerlProc_setuid(PL_uid); |
a0d0e21e |
1807 | else { |
b28d0864 |
1808 | PL_uid = (I32)PerlProc_getuid(); |
cea2e8a9 |
1809 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e |
1810 | } |
79072805 |
1811 | #endif |
1812 | #endif |
85e6fe83 |
1813 | #endif |
3280af22 |
1814 | PL_uid = (I32)PerlProc_getuid(); |
1815 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 |
1816 | break; |
1817 | case '>': |
3280af22 |
1818 | PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1819 | if (PL_delaymagic) { |
1820 | PL_delaymagic |= DM_EUID; |
79072805 |
1821 | break; /* don't do magic till later */ |
1822 | } |
1823 | #ifdef HAS_SETEUID |
3280af22 |
1824 | (void)seteuid((Uid_t)PL_euid); |
79072805 |
1825 | #else |
1826 | #ifdef HAS_SETREUID |
b28d0864 |
1827 | (void)setreuid((Uid_t)-1, (Uid_t)PL_euid); |
85e6fe83 |
1828 | #else |
1829 | #ifdef HAS_SETRESUID |
6b88bc9c |
1830 | (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1); |
79072805 |
1831 | #else |
b28d0864 |
1832 | if (PL_euid == PL_uid) /* special case $> = $< */ |
1833 | PerlProc_setuid(PL_euid); |
a0d0e21e |
1834 | else { |
b28d0864 |
1835 | PL_euid = (I32)PerlProc_geteuid(); |
cea2e8a9 |
1836 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e |
1837 | } |
79072805 |
1838 | #endif |
1839 | #endif |
85e6fe83 |
1840 | #endif |
3280af22 |
1841 | PL_euid = (I32)PerlProc_geteuid(); |
1842 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 |
1843 | break; |
1844 | case '(': |
3280af22 |
1845 | PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1846 | if (PL_delaymagic) { |
1847 | PL_delaymagic |= DM_RGID; |
79072805 |
1848 | break; /* don't do magic till later */ |
1849 | } |
1850 | #ifdef HAS_SETRGID |
b28d0864 |
1851 | (void)setrgid((Gid_t)PL_gid); |
79072805 |
1852 | #else |
1853 | #ifdef HAS_SETREGID |
3280af22 |
1854 | (void)setregid((Gid_t)PL_gid, (Gid_t)-1); |
85e6fe83 |
1855 | #else |
1856 | #ifdef HAS_SETRESGID |
b28d0864 |
1857 | (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1); |
79072805 |
1858 | #else |
b28d0864 |
1859 | if (PL_gid == PL_egid) /* special case $( = $) */ |
1860 | (void)PerlProc_setgid(PL_gid); |
748a9306 |
1861 | else { |
b28d0864 |
1862 | PL_gid = (I32)PerlProc_getgid(); |
cea2e8a9 |
1863 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 |
1864 | } |
79072805 |
1865 | #endif |
1866 | #endif |
85e6fe83 |
1867 | #endif |
3280af22 |
1868 | PL_gid = (I32)PerlProc_getgid(); |
1869 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 |
1870 | break; |
1871 | case ')': |
5cd24f17 |
1872 | #ifdef HAS_SETGROUPS |
1873 | { |
2d8e6c8d |
1874 | char *p = SvPV(sv, len); |
5cd24f17 |
1875 | Groups_t gary[NGROUPS]; |
1876 | |
5cd24f17 |
1877 | while (isSPACE(*p)) |
1878 | ++p; |
097ee67d |
1879 | PL_egid = I_V(atol(p)); |
5cd24f17 |
1880 | for (i = 0; i < NGROUPS; ++i) { |
1881 | while (*p && !isSPACE(*p)) |
1882 | ++p; |
1883 | while (isSPACE(*p)) |
1884 | ++p; |
1885 | if (!*p) |
1886 | break; |
097ee67d |
1887 | gary[i] = I_V(atol(p)); |
5cd24f17 |
1888 | } |
8cc95fdb |
1889 | if (i) |
1890 | (void)setgroups(i, gary); |
5cd24f17 |
1891 | } |
1892 | #else /* HAS_SETGROUPS */ |
b28d0864 |
1893 | PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
5cd24f17 |
1894 | #endif /* HAS_SETGROUPS */ |
3280af22 |
1895 | if (PL_delaymagic) { |
1896 | PL_delaymagic |= DM_EGID; |
79072805 |
1897 | break; /* don't do magic till later */ |
1898 | } |
1899 | #ifdef HAS_SETEGID |
3280af22 |
1900 | (void)setegid((Gid_t)PL_egid); |
79072805 |
1901 | #else |
1902 | #ifdef HAS_SETREGID |
b28d0864 |
1903 | (void)setregid((Gid_t)-1, (Gid_t)PL_egid); |
85e6fe83 |
1904 | #else |
1905 | #ifdef HAS_SETRESGID |
b28d0864 |
1906 | (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1); |
79072805 |
1907 | #else |
b28d0864 |
1908 | if (PL_egid == PL_gid) /* special case $) = $( */ |
1909 | (void)PerlProc_setgid(PL_egid); |
748a9306 |
1910 | else { |
b28d0864 |
1911 | PL_egid = (I32)PerlProc_getegid(); |
cea2e8a9 |
1912 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 |
1913 | } |
79072805 |
1914 | #endif |
1915 | #endif |
85e6fe83 |
1916 | #endif |
3280af22 |
1917 | PL_egid = (I32)PerlProc_getegid(); |
1918 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 |
1919 | break; |
1920 | case ':': |
2d8e6c8d |
1921 | PL_chopset = SvPV_force(sv,len); |
79072805 |
1922 | break; |
1923 | case '0': |
3280af22 |
1924 | if (!PL_origalen) { |
1925 | s = PL_origargv[0]; |
79072805 |
1926 | s += strlen(s); |
1927 | /* See if all the arguments are contiguous in memory */ |
3280af22 |
1928 | for (i = 1; i < PL_origargc; i++) { |
1929 | if (PL_origargv[i] == s + 1 |
fb73857a |
1930 | #ifdef OS2 |
6b88bc9c |
1931 | || PL_origargv[i] == s + 2 |
fb73857a |
1932 | #endif |
1933 | ) |
379c4362 |
1934 | { |
1935 | ++s; |
1936 | s += strlen(s); /* this one is ok too */ |
1937 | } |
fb73857a |
1938 | else |
1939 | break; |
79072805 |
1940 | } |
bbce6d69 |
1941 | /* can grab env area too? */ |
3280af22 |
1942 | if (PL_origenviron && (PL_origenviron[0] == s + 1 |
fb73857a |
1943 | #ifdef OS2 |
6b88bc9c |
1944 | || (PL_origenviron[0] == s + 9 && (s += 8)) |
fb73857a |
1945 | #endif |
1946 | )) { |
66b1d557 |
1947 | my_setenv("NoNe SuCh", Nullch); |
79072805 |
1948 | /* force copy of environment */ |
3280af22 |
1949 | for (i = 0; PL_origenviron[i]; i++) |
379c4362 |
1950 | if (PL_origenviron[i] == s + 1) { |
1951 | ++s; |
1952 | s += strlen(s); |
1953 | } |
fb73857a |
1954 | else |
1955 | break; |
79072805 |
1956 | } |
3280af22 |
1957 | PL_origalen = s - PL_origargv[0]; |
79072805 |
1958 | } |
a0d0e21e |
1959 | s = SvPV_force(sv,len); |
8990e307 |
1960 | i = len; |
3280af22 |
1961 | if (i >= PL_origalen) { |
1962 | i = PL_origalen; |
fb73857a |
1963 | /* don't allow system to limit $0 seen by script */ |
1964 | /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */ |
3280af22 |
1965 | Copy(s, PL_origargv[0], i, char); |
1966 | s = PL_origargv[0]+i; |
fb73857a |
1967 | *s = '\0'; |
79072805 |
1968 | } |
1969 | else { |
3280af22 |
1970 | Copy(s, PL_origargv[0], i, char); |
1971 | s = PL_origargv[0]+i; |
79072805 |
1972 | *s++ = '\0'; |
3280af22 |
1973 | while (++i < PL_origalen) |
8990e307 |
1974 | *s++ = ' '; |
3280af22 |
1975 | s = PL_origargv[0]+i; |
1976 | for (i = 1; i < PL_origargc; i++) |
1977 | PL_origargv[i] = Nullch; |
79072805 |
1978 | } |
1979 | break; |
a863c7d1 |
1980 | #ifdef USE_THREADS |
1981 | case '@': |
38a03e6e |
1982 | sv_setsv(thr->errsv, sv); |
a863c7d1 |
1983 | break; |
1984 | #endif /* USE_THREADS */ |
79072805 |
1985 | } |
1986 | return 0; |
1987 | } |
1988 | |
f93b4edd |
1989 | #ifdef USE_THREADS |
1990 | int |
864dbfa3 |
1991 | Perl_magic_mutexfree(pTHX_ SV *sv, MAGIC *mg) |
f93b4edd |
1992 | { |
1993 | dTHR; |
8b73bbec |
1994 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), "0x%lx: magic_mutexfree 0x%lx\n", |
bc1f4c86 |
1995 | (unsigned long)thr, (unsigned long)sv);) |
f93b4edd |
1996 | if (MgOWNER(mg)) |
cea2e8a9 |
1997 | Perl_croak(aTHX_ "panic: magic_mutexfree"); |
f93b4edd |
1998 | MUTEX_DESTROY(MgMUTEXP(mg)); |
1999 | COND_DESTROY(MgCONDP(mg)); |
2000 | return 0; |
2001 | } |
2002 | #endif /* USE_THREADS */ |
2003 | |
79072805 |
2004 | I32 |
864dbfa3 |
2005 | Perl_whichsig(pTHX_ char *sig) |
79072805 |
2006 | { |
2007 | register char **sigv; |
2008 | |
22c35a8c |
2009 | for (sigv = PL_sig_name+1; *sigv; sigv++) |
79072805 |
2010 | if (strEQ(sig,*sigv)) |
22c35a8c |
2011 | return PL_sig_num[sigv - PL_sig_name]; |
79072805 |
2012 | #ifdef SIGCLD |
2013 | if (strEQ(sig,"CHLD")) |
2014 | return SIGCLD; |
2015 | #endif |
2016 | #ifdef SIGCHLD |
2017 | if (strEQ(sig,"CLD")) |
2018 | return SIGCHLD; |
2019 | #endif |
2020 | return 0; |
2021 | } |
2022 | |
84902520 |
2023 | static SV* sig_sv; |
2024 | |
ecfc5424 |
2025 | Signal_t |
cea2e8a9 |
2026 | Perl_sighandler(int sig) |
79072805 |
2027 | { |
cea2e8a9 |
2028 | dTHX; |
79072805 |
2029 | dSP; |
00d579c5 |
2030 | GV *gv = Nullgv; |
a0d0e21e |
2031 | HV *st; |
3280af22 |
2032 | SV *sv, *tSv = PL_Sv; |
00d579c5 |
2033 | CV *cv = Nullcv; |
533c011a |
2034 | OP *myop = PL_op; |
84902520 |
2035 | U32 flags = 0; |
3280af22 |
2036 | I32 o_save_i = PL_savestack_ix, type; |
2037 | XPV *tXpv = PL_Xpv; |
84902520 |
2038 | |
3280af22 |
2039 | if (PL_savestack_ix + 15 <= PL_savestack_max) |
84902520 |
2040 | flags |= 1; |
3280af22 |
2041 | if (PL_markstack_ptr < PL_markstack_max - 2) |
84902520 |
2042 | flags |= 4; |
3280af22 |
2043 | if (PL_retstack_ix < PL_retstack_max - 2) |
84902520 |
2044 | flags |= 8; |
3280af22 |
2045 | if (PL_scopestack_ix < PL_scopestack_max - 3) |
84902520 |
2046 | flags |= 16; |
2047 | |
22c35a8c |
2048 | if (!PL_psig_ptr[sig]) |
cea2e8a9 |
2049 | Perl_die(aTHX_ "Signal SIG%s received, but no signal handler set.\n", |
22c35a8c |
2050 | PL_sig_name[sig]); |
ff0cee69 |
2051 | |
84902520 |
2052 | /* Max number of items pushed there is 3*n or 4. We cannot fix |
2053 | infinity, so we fix 4 (in fact 5): */ |
2054 | if (flags & 1) { |
3280af22 |
2055 | PL_savestack_ix += 5; /* Protect save in progress. */ |
2056 | o_save_i = PL_savestack_ix; |
51371543 |
2057 | SAVEDESTRUCTOR(unwind_handler_stack, (void*)&flags); |
84902520 |
2058 | } |
2059 | if (flags & 4) |
3280af22 |
2060 | PL_markstack_ptr++; /* Protect mark. */ |
84902520 |
2061 | if (flags & 8) { |
3280af22 |
2062 | PL_retstack_ix++; |
2063 | PL_retstack[PL_retstack_ix] = NULL; |
84902520 |
2064 | } |
2065 | if (flags & 16) |
3280af22 |
2066 | PL_scopestack_ix += 1; |
84902520 |
2067 | /* sv_2cv is too complicated, try a simpler variant first: */ |
22c35a8c |
2068 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig])) |
84902520 |
2069 | || SvTYPE(cv) != SVt_PVCV) |
22c35a8c |
2070 | cv = sv_2cv(PL_psig_ptr[sig],&st,&gv,TRUE); |
84902520 |
2071 | |
a0d0e21e |
2072 | if (!cv || !CvROOT(cv)) { |
599cee73 |
2073 | if (ckWARN(WARN_SIGNAL)) |
cea2e8a9 |
2074 | Perl_warner(aTHX_ WARN_SIGNAL, "SIG%s handler \"%s\" not defined.\n", |
22c35a8c |
2075 | PL_sig_name[sig], (gv ? GvENAME(gv) |
00d579c5 |
2076 | : ((cv && CvGV(cv)) |
2077 | ? GvENAME(CvGV(cv)) |
2078 | : "__ANON__"))); |
2079 | goto cleanup; |
79072805 |
2080 | } |
2081 | |
22c35a8c |
2082 | if(PL_psig_name[sig]) { |
2083 | sv = SvREFCNT_inc(PL_psig_name[sig]); |
84902520 |
2084 | flags |= 64; |
2085 | sig_sv = sv; |
2086 | } else { |
ff0cee69 |
2087 | sv = sv_newmortal(); |
22c35a8c |
2088 | sv_setpv(sv,PL_sig_name[sig]); |
88e89b8a |
2089 | } |
e336de0d |
2090 | |
e788e7d3 |
2091 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 |
2092 | PUSHMARK(SP); |
79072805 |
2093 | PUSHs(sv); |
79072805 |
2094 | PUTBACK; |
a0d0e21e |
2095 | |
864dbfa3 |
2096 | call_sv((SV*)cv, G_DISCARD); |
79072805 |
2097 | |
d3acc0f7 |
2098 | POPSTACK; |
00d579c5 |
2099 | cleanup: |
84902520 |
2100 | if (flags & 1) |
3280af22 |
2101 | PL_savestack_ix -= 8; /* Unprotect save in progress. */ |
84902520 |
2102 | if (flags & 4) |
3280af22 |
2103 | PL_markstack_ptr--; |
84902520 |
2104 | if (flags & 8) |
3280af22 |
2105 | PL_retstack_ix--; |
84902520 |
2106 | if (flags & 16) |
3280af22 |
2107 | PL_scopestack_ix -= 1; |
84902520 |
2108 | if (flags & 64) |
2109 | SvREFCNT_dec(sv); |
533c011a |
2110 | PL_op = myop; /* Apparently not needed... */ |
84902520 |
2111 | |
3280af22 |
2112 | PL_Sv = tSv; /* Restore global temporaries. */ |
2113 | PL_Xpv = tXpv; |
79072805 |
2114 | return; |
2115 | } |
4e35701f |
2116 | |
2117 | |
51371543 |
2118 | #ifdef PERL_OBJECT |
2119 | #define NO_XSLOCKS |
2120 | #include "XSUB.h" |
2121 | #endif |
2122 | |
2123 | static void |
2124 | restore_magic(pTHXo_ void *p) |
2125 | { |
2126 | dTHR; |
2127 | MGS* mgs = SSPTR((I32)p, MGS*); |
2128 | SV* sv = mgs->mgs_sv; |
2129 | |
2130 | if (!sv) |
2131 | return; |
2132 | |
2133 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) |
2134 | { |
2135 | if (mgs->mgs_flags) |
2136 | SvFLAGS(sv) |= mgs->mgs_flags; |
2137 | else |
2138 | mg_magical(sv); |
2139 | if (SvGMAGICAL(sv)) |
2140 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); |
2141 | } |
2142 | |
2143 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ |
2144 | |
2145 | /* If we're still on top of the stack, pop us off. (That condition |
2146 | * will be satisfied if restore_magic was called explicitly, but *not* |
2147 | * if it's being called via leave_scope.) |
2148 | * The reason for doing this is that otherwise, things like sv_2cv() |
2149 | * may leave alloc gunk on the savestack, and some code |
2150 | * (e.g. sighandler) doesn't expect that... |
2151 | */ |
2152 | if (PL_savestack_ix == mgs->mgs_ss_ix) |
2153 | { |
2154 | I32 popval = SSPOPINT; |
2155 | assert(popval == SAVEt_DESTRUCTOR); |
2156 | PL_savestack_ix -= 2; |
2157 | popval = SSPOPINT; |
2158 | assert(popval == SAVEt_ALLOC); |
2159 | popval = SSPOPINT; |
2160 | PL_savestack_ix -= popval; |
2161 | } |
2162 | |
2163 | } |
2164 | |
2165 | static void |
2166 | unwind_handler_stack(pTHXo_ void *p) |
2167 | { |
2168 | dTHR; |
2169 | U32 flags = *(U32*)p; |
2170 | |
2171 | if (flags & 1) |
2172 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ |
2173 | /* cxstack_ix-- Not needed, die already unwound it. */ |
2174 | if (flags & 64) |
2175 | SvREFCNT_dec(sig_sv); |
2176 | } |