Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* mg.c |
79072805 | 2 | * |
4eb8286e | 3 | * Copyright (c) 1991-1999, Larry Wall |
79072805 LW |
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 LW |
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 LW |
13 | */ |
14 | ||
15 | #include "EXTERN.h" | |
864dbfa3 | 16 | #define PERL_IN_MG_C |
79072805 LW |
17 | #include "perl.h" |
18 | ||
e6d9441c | 19 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
a0d0e21e LW |
20 | #ifdef I_UNISTD |
21 | # include <unistd.h> | |
22 | #endif | |
a0d0e21e | 23 | |
5cd24f17 | 24 | #if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS) |
188ea221 CS |
25 | # ifndef NGROUPS |
26 | # define NGROUPS 32 | |
27 | # endif | |
28 | #endif | |
29 | ||
51371543 GS |
30 | static void restore_magic(pTHXo_ void *p); |
31 | static void unwind_handler_stack(pTHXo_ void *p); | |
32 | ||
c07a80fd | 33 | /* |
34 | * Use the "DESTRUCTOR" scope cleanup to reinstate magic. | |
35 | */ | |
36 | ||
37 | struct magic_state { | |
38 | SV* mgs_sv; | |
39 | U32 mgs_flags; | |
455ece5e | 40 | I32 mgs_ss_ix; |
c07a80fd | 41 | }; |
455ece5e | 42 | /* MGS is typedef'ed to struct magic_state in perl.h */ |
76e3520e GS |
43 | |
44 | STATIC void | |
cea2e8a9 | 45 | S_save_magic(pTHX_ I32 mgs_ix, SV *sv) |
c07a80fd | 46 | { |
46124e9e | 47 | dTHR; |
455ece5e | 48 | MGS* mgs; |
c07a80fd | 49 | assert(SvMAGICAL(sv)); |
50 | ||
c76ac1ee | 51 | SAVEDESTRUCTOR_X(restore_magic, (void*)mgs_ix); |
455ece5e AD |
52 | |
53 | mgs = SSPTR(mgs_ix, MGS*); | |
c07a80fd | 54 | mgs->mgs_sv = sv; |
55 | mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv); | |
455ece5e | 56 | mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */ |
c07a80fd | 57 | |
58 | SvMAGICAL_off(sv); | |
59 | SvREADONLY_off(sv); | |
60 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; | |
c07a80fd | 61 | } |
62 | ||
8990e307 | 63 | void |
864dbfa3 | 64 | Perl_mg_magical(pTHX_ SV *sv) |
8990e307 LW |
65 | { |
66 | MAGIC* mg; | |
67 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
68 | MGVTBL* vtbl = mg->mg_virtual; | |
69 | if (vtbl) { | |
76e3520e | 70 | if ((vtbl->svt_get != NULL) && !(mg->mg_flags & MGf_GSKIP)) |
8990e307 LW |
71 | SvGMAGICAL_on(sv); |
72 | if (vtbl->svt_set) | |
73 | SvSMAGICAL_on(sv); | |
76e3520e | 74 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || (vtbl->svt_clear != NULL)) |
8990e307 LW |
75 | SvRMAGICAL_on(sv); |
76 | } | |
77 | } | |
78 | } | |
79 | ||
79072805 | 80 | int |
864dbfa3 | 81 | Perl_mg_get(pTHX_ SV *sv) |
79072805 | 82 | { |
46124e9e | 83 | dTHR; |
455ece5e | 84 | I32 mgs_ix; |
79072805 | 85 | MAGIC* mg; |
c6496cc7 | 86 | MAGIC** mgp; |
760ac839 | 87 | int mgp_valid = 0; |
463ee0b2 | 88 | |
455ece5e AD |
89 | mgs_ix = SSNEW(sizeof(MGS)); |
90 | save_magic(mgs_ix, sv); | |
463ee0b2 | 91 | |
c6496cc7 | 92 | mgp = &SvMAGIC(sv); |
93 | while ((mg = *mgp) != 0) { | |
79072805 | 94 | MGVTBL* vtbl = mg->mg_virtual; |
76e3520e | 95 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && (vtbl->svt_get != NULL)) { |
316ad4fe | 96 | CALL_FPTR(vtbl->svt_get)(aTHX_ sv, mg); |
c6496cc7 | 97 | /* Ignore this magic if it's been deleted */ |
48e43a1c CS |
98 | if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) && |
99 | (mg->mg_flags & MGf_GSKIP)) | |
455ece5e | 100 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
a0d0e21e | 101 | } |
c6496cc7 | 102 | /* Advance to next magic (complicated by possible deletion) */ |
760ac839 | 103 | if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) { |
c6496cc7 | 104 | mgp = &mg->mg_moremagic; |
760ac839 LW |
105 | mgp_valid = 1; |
106 | } | |
107 | else | |
108 | mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */ | |
79072805 | 109 | } |
463ee0b2 | 110 | |
51371543 | 111 | restore_magic(aTHXo_ (void*)mgs_ix); |
79072805 LW |
112 | return 0; |
113 | } | |
114 | ||
115 | int | |
864dbfa3 | 116 | Perl_mg_set(pTHX_ SV *sv) |
79072805 | 117 | { |
46124e9e | 118 | dTHR; |
455ece5e | 119 | I32 mgs_ix; |
79072805 | 120 | MAGIC* mg; |
463ee0b2 LW |
121 | MAGIC* nextmg; |
122 | ||
455ece5e AD |
123 | mgs_ix = SSNEW(sizeof(MGS)); |
124 | save_magic(mgs_ix, sv); | |
463ee0b2 LW |
125 | |
126 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { | |
79072805 | 127 | MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 | 128 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e LW |
129 | if (mg->mg_flags & MGf_GSKIP) { |
130 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ | |
455ece5e | 131 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
a0d0e21e | 132 | } |
76e3520e | 133 | if (vtbl && (vtbl->svt_set != NULL)) |
fc0dc3b3 | 134 | CALL_FPTR(vtbl->svt_set)(aTHX_ sv, mg); |
79072805 | 135 | } |
463ee0b2 | 136 | |
51371543 | 137 | restore_magic(aTHXo_ (void*)mgs_ix); |
79072805 LW |
138 | return 0; |
139 | } | |
140 | ||
141 | U32 | |
864dbfa3 | 142 | Perl_mg_length(pTHX_ SV *sv) |
79072805 LW |
143 | { |
144 | MAGIC* mg; | |
748a9306 | 145 | char *junk; |
463ee0b2 | 146 | STRLEN len; |
463ee0b2 | 147 | |
79072805 LW |
148 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
149 | MGVTBL* vtbl = mg->mg_virtual; | |
76e3520e | 150 | if (vtbl && (vtbl->svt_len != NULL)) { |
455ece5e | 151 | I32 mgs_ix; |
48e43a1c | 152 | |
455ece5e AD |
153 | mgs_ix = SSNEW(sizeof(MGS)); |
154 | save_magic(mgs_ix, sv); | |
a0d0e21e | 155 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 | 156 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
51371543 | 157 | restore_magic(aTHXo_ (void*)mgs_ix); |
85e6fe83 LW |
158 | return len; |
159 | } | |
160 | } | |
161 | ||
748a9306 | 162 | junk = SvPV(sv, len); |
463ee0b2 | 163 | return len; |
79072805 LW |
164 | } |
165 | ||
93965878 | 166 | I32 |
864dbfa3 | 167 | Perl_mg_size(pTHX_ SV *sv) |
93965878 NIS |
168 | { |
169 | MAGIC* mg; | |
170 | I32 len; | |
171 | ||
172 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
173 | MGVTBL* vtbl = mg->mg_virtual; | |
565764a8 | 174 | if (vtbl && (vtbl->svt_len != NULL)) { |
455ece5e AD |
175 | I32 mgs_ix; |
176 | ||
177 | mgs_ix = SSNEW(sizeof(MGS)); | |
178 | save_magic(mgs_ix, sv); | |
93965878 | 179 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 | 180 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
51371543 | 181 | restore_magic(aTHXo_ (void*)mgs_ix); |
93965878 NIS |
182 | return len; |
183 | } | |
184 | } | |
185 | ||
186 | switch(SvTYPE(sv)) { | |
187 | case SVt_PVAV: | |
188 | len = AvFILLp((AV *) sv); /* Fallback to non-tied array */ | |
189 | return len; | |
190 | case SVt_PVHV: | |
191 | /* FIXME */ | |
192 | default: | |
cea2e8a9 | 193 | Perl_croak(aTHX_ "Size magic not implemented"); |
93965878 NIS |
194 | break; |
195 | } | |
196 | return 0; | |
197 | } | |
198 | ||
79072805 | 199 | int |
864dbfa3 | 200 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 | 201 | { |
455ece5e | 202 | I32 mgs_ix; |
79072805 | 203 | MAGIC* mg; |
463ee0b2 | 204 | |
455ece5e AD |
205 | mgs_ix = SSNEW(sizeof(MGS)); |
206 | save_magic(mgs_ix, sv); | |
463ee0b2 | 207 | |
79072805 LW |
208 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
209 | MGVTBL* vtbl = mg->mg_virtual; | |
a0d0e21e LW |
210 | /* omit GSKIP -- never set here */ |
211 | ||
76e3520e | 212 | if (vtbl && (vtbl->svt_clear != NULL)) |
fc0dc3b3 | 213 | CALL_FPTR(vtbl->svt_clear)(aTHX_ sv, mg); |
79072805 | 214 | } |
463ee0b2 | 215 | |
51371543 | 216 | restore_magic(aTHXo_ (void*)mgs_ix); |
79072805 LW |
217 | return 0; |
218 | } | |
219 | ||
93a17b20 | 220 | MAGIC* |
864dbfa3 | 221 | Perl_mg_find(pTHX_ SV *sv, int type) |
93a17b20 LW |
222 | { |
223 | MAGIC* mg; | |
93a17b20 LW |
224 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
225 | if (mg->mg_type == type) | |
226 | return mg; | |
227 | } | |
228 | return 0; | |
229 | } | |
230 | ||
79072805 | 231 | int |
864dbfa3 | 232 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 | 233 | { |
463ee0b2 | 234 | int count = 0; |
79072805 | 235 | MAGIC* mg; |
463ee0b2 LW |
236 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
237 | if (isUPPER(mg->mg_type)) { | |
33c27489 GS |
238 | sv_magic(nsv, |
239 | mg->mg_type == 'P' ? SvTIED_obj(sv, mg) : mg->mg_obj, | |
240 | toLOWER(mg->mg_type), key, klen); | |
463ee0b2 | 241 | count++; |
79072805 | 242 | } |
79072805 | 243 | } |
463ee0b2 | 244 | return count; |
79072805 LW |
245 | } |
246 | ||
247 | int | |
864dbfa3 | 248 | Perl_mg_free(pTHX_ SV *sv) |
79072805 LW |
249 | { |
250 | MAGIC* mg; | |
251 | MAGIC* moremagic; | |
252 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { | |
253 | MGVTBL* vtbl = mg->mg_virtual; | |
254 | moremagic = mg->mg_moremagic; | |
76e3520e | 255 | if (vtbl && (vtbl->svt_free != NULL)) |
fc0dc3b3 | 256 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
93a17b20 | 257 | if (mg->mg_ptr && mg->mg_type != 'g') |
565764a8 | 258 | if (mg->mg_len >= 0) |
88e89b8a | 259 | Safefree(mg->mg_ptr); |
565764a8 | 260 | else if (mg->mg_len == HEf_SVKEY) |
88e89b8a | 261 | SvREFCNT_dec((SV*)mg->mg_ptr); |
85e6fe83 | 262 | if (mg->mg_flags & MGf_REFCOUNTED) |
8990e307 | 263 | SvREFCNT_dec(mg->mg_obj); |
79072805 LW |
264 | Safefree(mg); |
265 | } | |
266 | SvMAGIC(sv) = 0; | |
267 | return 0; | |
268 | } | |
269 | ||
270 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) | |
271 | #include <signal.h> | |
272 | #endif | |
273 | ||
942e002e | 274 | U32 |
864dbfa3 | 275 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 IZ |
276 | { |
277 | dTHR; | |
278 | register char *s; | |
279 | register I32 i; | |
280 | register REGEXP *rx; | |
281 | char *t; | |
282 | ||
8f580fb8 IZ |
283 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
284 | if (mg->mg_obj) /* @+ */ | |
285 | return rx->nparens; | |
286 | else /* @- */ | |
287 | return rx->lastparen; | |
288 | } | |
289 | ||
942e002e | 290 | return (U32)-1; |
6cef1e77 IZ |
291 | } |
292 | ||
293 | int | |
864dbfa3 | 294 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 IZ |
295 | { |
296 | dTHR; | |
297 | register I32 paren; | |
cf93c79d | 298 | register I32 s; |
6cef1e77 IZ |
299 | register I32 i; |
300 | register REGEXP *rx; | |
cf93c79d | 301 | I32 t; |
6cef1e77 IZ |
302 | |
303 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { | |
304 | paren = mg->mg_len; | |
305 | if (paren < 0) | |
306 | return 0; | |
307 | if (paren <= rx->nparens && | |
cf93c79d IZ |
308 | (s = rx->startp[paren]) != -1 && |
309 | (t = rx->endp[paren]) != -1) | |
6cef1e77 IZ |
310 | { |
311 | if (mg->mg_obj) /* @+ */ | |
cf93c79d | 312 | i = t; |
6cef1e77 | 313 | else /* @- */ |
cf93c79d | 314 | i = s; |
6cef1e77 IZ |
315 | sv_setiv(sv,i); |
316 | } | |
317 | } | |
318 | return 0; | |
319 | } | |
320 | ||
93a17b20 | 321 | U32 |
864dbfa3 | 322 | Perl_magic_len(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 323 | { |
a863c7d1 | 324 | dTHR; |
93a17b20 LW |
325 | register I32 paren; |
326 | register char *s; | |
327 | register I32 i; | |
d9f97599 | 328 | register REGEXP *rx; |
748a9306 | 329 | char *t; |
93a17b20 LW |
330 | |
331 | switch (*mg->mg_ptr) { | |
332 | case '1': case '2': case '3': case '4': | |
333 | case '5': case '6': case '7': case '8': case '9': case '&': | |
3280af22 | 334 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d IZ |
335 | I32 s1, t1; |
336 | ||
93a17b20 LW |
337 | paren = atoi(mg->mg_ptr); |
338 | getparen: | |
d9f97599 | 339 | if (paren <= rx->nparens && |
cf93c79d IZ |
340 | (s1 = rx->startp[paren]) != -1 && |
341 | (t1 = rx->endp[paren]) != -1) | |
bbce6d69 | 342 | { |
cf93c79d | 343 | i = t1 - s1; |
71be2cbc | 344 | if (i >= 0) |
93a17b20 | 345 | return i; |
93a17b20 | 346 | } |
93a17b20 | 347 | } |
748a9306 | 348 | return 0; |
93a17b20 | 349 | case '+': |
3280af22 | 350 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
d9f97599 | 351 | paren = rx->lastparen; |
13f57bf8 CS |
352 | if (paren) |
353 | goto getparen; | |
93a17b20 | 354 | } |
748a9306 | 355 | return 0; |
93a17b20 | 356 | case '`': |
3280af22 | 357 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d IZ |
358 | if (rx->startp[0] != -1) { |
359 | i = rx->startp[0]; | |
71be2cbc | 360 | if (i >= 0) |
93a17b20 | 361 | return i; |
93a17b20 | 362 | } |
93a17b20 | 363 | } |
748a9306 | 364 | return 0; |
93a17b20 | 365 | case '\'': |
3280af22 | 366 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d IZ |
367 | if (rx->endp[0] != -1) { |
368 | i = rx->sublen - rx->endp[0]; | |
13f57bf8 | 369 | if (i >= 0) |
5cd24f17 | 370 | return i; |
93a17b20 | 371 | } |
93a17b20 | 372 | } |
748a9306 | 373 | return 0; |
93a17b20 | 374 | case ',': |
3280af22 | 375 | return (STRLEN)PL_ofslen; |
93a17b20 | 376 | case '\\': |
3280af22 | 377 | return (STRLEN)PL_orslen; |
93a17b20 LW |
378 | } |
379 | magic_get(sv,mg); | |
2d8e6c8d GS |
380 | if (!SvPOK(sv) && SvNIOK(sv)) { |
381 | STRLEN n_a; | |
382 | sv_2pv(sv, &n_a); | |
383 | } | |
93a17b20 LW |
384 | if (SvPOK(sv)) |
385 | return SvCUR(sv); | |
386 | return 0; | |
387 | } | |
388 | ||
79072805 | 389 | int |
864dbfa3 | 390 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 391 | { |
a863c7d1 | 392 | dTHR; |
79072805 LW |
393 | register I32 paren; |
394 | register char *s; | |
395 | register I32 i; | |
d9f97599 | 396 | register REGEXP *rx; |
748a9306 | 397 | char *t; |
79072805 LW |
398 | |
399 | switch (*mg->mg_ptr) { | |
748a9306 | 400 | case '\001': /* ^A */ |
3280af22 | 401 | sv_setsv(sv, PL_bodytarget); |
748a9306 | 402 | break; |
49460fe6 NIS |
403 | case '\003': /* ^C */ |
404 | sv_setiv(sv, (IV)PL_minus_c); | |
405 | break; | |
406 | ||
79072805 | 407 | case '\004': /* ^D */ |
3280af22 | 408 | sv_setiv(sv, (IV)(PL_debug & 32767)); |
79072805 | 409 | break; |
28f23441 | 410 | case '\005': /* ^E */ |
411 | #ifdef VMS | |
412 | { | |
413 | # include <descrip.h> | |
414 | # include <starlet.h> | |
415 | char msg[255]; | |
416 | $DESCRIPTOR(msgdsc,msg); | |
65202027 | 417 | sv_setnv(sv,(NV) vaxc$errno); |
28f23441 | 418 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) |
419 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); | |
420 | else | |
421 | sv_setpv(sv,""); | |
422 | } | |
423 | #else | |
88e89b8a | 424 | #ifdef OS2 |
fb73857a | 425 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
65202027 | 426 | sv_setnv(sv, (NV)errno); |
fb73857a | 427 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
428 | } else { | |
017f25f1 IZ |
429 | if (errno != errno_isOS2) { |
430 | int tmp = _syserrno(); | |
431 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ | |
432 | Perl_rc = tmp; | |
433 | } | |
65202027 | 434 | sv_setnv(sv, (NV)Perl_rc); |
fb73857a | 435 | sv_setpv(sv, os2error(Perl_rc)); |
436 | } | |
88e89b8a | 437 | #else |
22fae026 TM |
438 | #ifdef WIN32 |
439 | { | |
440 | DWORD dwErr = GetLastError(); | |
65202027 | 441 | sv_setnv(sv, (NV)dwErr); |
22fae026 | 442 | if (dwErr) |
76e3520e | 443 | { |
0cb96387 | 444 | PerlProc_GetOSError(sv, dwErr); |
76e3520e | 445 | } |
22fae026 TM |
446 | else |
447 | sv_setpv(sv, ""); | |
448 | SetLastError(dwErr); | |
449 | } | |
450 | #else | |
65202027 | 451 | sv_setnv(sv, (NV)errno); |
28f23441 | 452 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
453 | #endif | |
88e89b8a | 454 | #endif |
22fae026 | 455 | #endif |
946ec16e | 456 | SvNOK_on(sv); /* what a wonderful hack! */ |
28f23441 | 457 | break; |
79072805 | 458 | case '\006': /* ^F */ |
3280af22 | 459 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 | 460 | break; |
a0d0e21e | 461 | case '\010': /* ^H */ |
3280af22 | 462 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e | 463 | break; |
9d116dd7 | 464 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 NIS |
465 | if (PL_inplace) |
466 | sv_setpv(sv, PL_inplace); | |
79072805 | 467 | else |
3280af22 | 468 | sv_setsv(sv, &PL_sv_undef); |
79072805 | 469 | break; |
28f23441 | 470 | case '\017': /* ^O */ |
3280af22 | 471 | sv_setpv(sv, PL_osname); |
28f23441 | 472 | break; |
79072805 | 473 | case '\020': /* ^P */ |
3280af22 | 474 | sv_setiv(sv, (IV)PL_perldb); |
79072805 | 475 | break; |
fb73857a | 476 | case '\023': /* ^S */ |
d58bf5aa MB |
477 | { |
478 | dTHR; | |
3280af22 | 479 | if (PL_lex_state != LEX_NOTPARSING) |
d58bf5aa | 480 | SvOK_off(sv); |
3280af22 | 481 | else if (PL_in_eval) |
d58bf5aa MB |
482 | sv_setiv(sv, 1); |
483 | else | |
484 | sv_setiv(sv, 0); | |
485 | } | |
fb73857a | 486 | break; |
79072805 | 487 | case '\024': /* ^T */ |
88e89b8a | 488 | #ifdef BIG_TIME |
6b88bc9c | 489 | sv_setnv(sv, PL_basetime); |
88e89b8a | 490 | #else |
3280af22 | 491 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 492 | #endif |
79072805 | 493 | break; |
4438c4b7 JH |
494 | case '\027': /* ^W & $^Warnings*/ |
495 | if (*(mg->mg_ptr+1) == '\0') | |
496 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); | |
497 | else if (strEQ(mg->mg_ptr, "\027arnings")) { | |
498 | if (PL_compiling.cop_warnings == WARN_NONE || | |
499 | PL_compiling.cop_warnings == WARN_STD) | |
500 | { | |
501 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; | |
502 | } | |
503 | else if (PL_compiling.cop_warnings == WARN_ALL) { | |
504 | sv_setpvn(sv, WARN_ALLstring, WARNsize) ; | |
505 | } | |
506 | else { | |
507 | sv_setsv(sv, PL_compiling.cop_warnings); | |
508 | } | |
509 | } | |
79072805 LW |
510 | break; |
511 | case '1': case '2': case '3': case '4': | |
512 | case '5': case '6': case '7': case '8': case '9': case '&': | |
3280af22 | 513 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d IZ |
514 | I32 s1, t1; |
515 | ||
a863c7d1 MB |
516 | /* |
517 | * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj)); | |
518 | * XXX Does the new way break anything? | |
519 | */ | |
520 | paren = atoi(mg->mg_ptr); | |
79072805 | 521 | getparen: |
d9f97599 | 522 | if (paren <= rx->nparens && |
cf93c79d IZ |
523 | (s1 = rx->startp[paren]) != -1 && |
524 | (t1 = rx->endp[paren]) != -1) | |
bbce6d69 | 525 | { |
cf93c79d IZ |
526 | i = t1 - s1; |
527 | s = rx->subbeg + s1; | |
13f57bf8 | 528 | getrx: |
748a9306 | 529 | if (i >= 0) { |
13f57bf8 | 530 | bool was_tainted; |
3280af22 NIS |
531 | if (PL_tainting) { |
532 | was_tainted = PL_tainted; | |
533 | PL_tainted = FALSE; | |
13f57bf8 | 534 | } |
cf93c79d | 535 | sv_setpvn(sv, s, i); |
3280af22 NIS |
536 | if (PL_tainting) |
537 | PL_tainted = (was_tainted || RX_MATCH_TAINTED(rx)); | |
748a9306 LW |
538 | break; |
539 | } | |
79072805 | 540 | } |
79072805 | 541 | } |
3280af22 | 542 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
543 | break; |
544 | case '+': | |
3280af22 | 545 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
d9f97599 | 546 | paren = rx->lastparen; |
a0d0e21e LW |
547 | if (paren) |
548 | goto getparen; | |
79072805 | 549 | } |
3280af22 | 550 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
551 | break; |
552 | case '`': | |
3280af22 | 553 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d IZ |
554 | if ((s = rx->subbeg) && rx->startp[0] != -1) { |
555 | i = rx->startp[0]; | |
13f57bf8 | 556 | goto getrx; |
79072805 | 557 | } |
79072805 | 558 | } |
3280af22 | 559 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
560 | break; |
561 | case '\'': | |
3280af22 | 562 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d IZ |
563 | if (rx->subbeg && rx->endp[0] != -1) { |
564 | s = rx->subbeg + rx->endp[0]; | |
565 | i = rx->sublen - rx->endp[0]; | |
13f57bf8 | 566 | goto getrx; |
79072805 | 567 | } |
79072805 | 568 | } |
3280af22 | 569 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
570 | break; |
571 | case '.': | |
572 | #ifndef lint | |
3280af22 NIS |
573 | if (GvIO(PL_last_in_gv)) { |
574 | sv_setiv(sv, (IV)IoLINES(GvIO(PL_last_in_gv))); | |
79072805 LW |
575 | } |
576 | #endif | |
577 | break; | |
578 | case '?': | |
809a5acc | 579 | { |
809a5acc | 580 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 581 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
582 | LvTARGOFF(sv) = PL_statusvalue; |
583 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 584 | #endif |
809a5acc | 585 | } |
79072805 LW |
586 | break; |
587 | case '^': | |
3280af22 | 588 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); |
79072805 LW |
589 | if (s) |
590 | sv_setpv(sv,s); | |
591 | else { | |
3280af22 | 592 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
79072805 LW |
593 | sv_catpv(sv,"_TOP"); |
594 | } | |
595 | break; | |
596 | case '~': | |
3280af22 | 597 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); |
79072805 | 598 | if (!s) |
3280af22 | 599 | s = GvENAME(PL_defoutgv); |
79072805 LW |
600 | sv_setpv(sv,s); |
601 | break; | |
602 | #ifndef lint | |
603 | case '=': | |
3280af22 | 604 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); |
79072805 LW |
605 | break; |
606 | case '-': | |
3280af22 | 607 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); |
79072805 LW |
608 | break; |
609 | case '%': | |
3280af22 | 610 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); |
79072805 LW |
611 | break; |
612 | #endif | |
613 | case ':': | |
614 | break; | |
615 | case '/': | |
616 | break; | |
617 | case '[': | |
3280af22 | 618 | WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase)); |
79072805 LW |
619 | break; |
620 | case '|': | |
3280af22 | 621 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 LW |
622 | break; |
623 | case ',': | |
3280af22 | 624 | sv_setpvn(sv,PL_ofs,PL_ofslen); |
79072805 LW |
625 | break; |
626 | case '\\': | |
3280af22 | 627 | sv_setpvn(sv,PL_ors,PL_orslen); |
79072805 LW |
628 | break; |
629 | case '#': | |
3280af22 | 630 | sv_setpv(sv,PL_ofmt); |
79072805 LW |
631 | break; |
632 | case '!': | |
a5f75d66 | 633 | #ifdef VMS |
65202027 | 634 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
88e89b8a | 635 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
a5f75d66 | 636 | #else |
88e89b8a | 637 | { |
638 | int saveerrno = errno; | |
65202027 | 639 | sv_setnv(sv, (NV)errno); |
88e89b8a | 640 | #ifdef OS2 |
641 | if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc)); | |
642 | else | |
a5f75d66 | 643 | #endif |
2304df62 | 644 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
88e89b8a | 645 | errno = saveerrno; |
646 | } | |
647 | #endif | |
946ec16e | 648 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
649 | break; |
650 | case '<': | |
3280af22 | 651 | sv_setiv(sv, (IV)PL_uid); |
79072805 LW |
652 | break; |
653 | case '>': | |
3280af22 | 654 | sv_setiv(sv, (IV)PL_euid); |
79072805 LW |
655 | break; |
656 | case '(': | |
3280af22 | 657 | sv_setiv(sv, (IV)PL_gid); |
cea2e8a9 | 658 | Perl_sv_setpvf(aTHX_ sv, "%Vd", (IV)PL_gid); |
79072805 LW |
659 | goto add_groups; |
660 | case ')': | |
3280af22 | 661 | sv_setiv(sv, (IV)PL_egid); |
cea2e8a9 | 662 | Perl_sv_setpvf(aTHX_ sv, "%Vd", (IV)PL_egid); |
79072805 | 663 | add_groups: |
79072805 | 664 | #ifdef HAS_GETGROUPS |
79072805 | 665 | { |
a0d0e21e | 666 | Groups_t gary[NGROUPS]; |
79072805 | 667 | i = getgroups(NGROUPS,gary); |
46fc3d4c | 668 | while (--i >= 0) |
cea2e8a9 | 669 | Perl_sv_catpvf(aTHX_ sv, " %Vd", (IV)gary[i]); |
79072805 LW |
670 | } |
671 | #endif | |
29355cf7 | 672 | SvIOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
673 | break; |
674 | case '*': | |
675 | break; | |
676 | case '0': | |
677 | break; | |
a863c7d1 MB |
678 | #ifdef USE_THREADS |
679 | case '@': | |
38a03e6e | 680 | sv_setsv(sv, thr->errsv); |
a863c7d1 MB |
681 | break; |
682 | #endif /* USE_THREADS */ | |
79072805 | 683 | } |
a0d0e21e | 684 | return 0; |
79072805 LW |
685 | } |
686 | ||
687 | int | |
864dbfa3 | 688 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
689 | { |
690 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
691 | ||
692 | if (uf && uf->uf_val) | |
693 | (*uf->uf_val)(uf->uf_index, sv); | |
694 | return 0; | |
695 | } | |
696 | ||
697 | int | |
864dbfa3 | 698 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
699 | { |
700 | register char *s; | |
88e89b8a | 701 | char *ptr; |
5aabfad6 | 702 | STRLEN len, klen; |
a0d0e21e | 703 | I32 i; |
1e422769 | 704 | |
a0d0e21e | 705 | s = SvPV(sv,len); |
5aabfad6 | 706 | ptr = MgPV(mg,klen); |
88e89b8a | 707 | my_setenv(ptr, s); |
1e422769 | 708 | |
a0d0e21e LW |
709 | #ifdef DYNAMIC_ENV_FETCH |
710 | /* We just undefd an environment var. Is a replacement */ | |
711 | /* waiting in the wings? */ | |
712 | if (!len) { | |
5aabfad6 | 713 | SV **valp; |
6b88bc9c | 714 | if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE))) |
5aabfad6 | 715 | s = SvPV(*valp, len); |
a0d0e21e LW |
716 | } |
717 | #endif | |
1e422769 | 718 | |
39e571d4 | 719 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
720 | /* And you'll never guess what the dog had */ |
721 | /* in its mouth... */ | |
3280af22 | 722 | if (PL_tainting) { |
1e422769 | 723 | MgTAINTEDDIR_off(mg); |
724 | #ifdef VMS | |
5aabfad6 | 725 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
1e422769 | 726 | char pathbuf[256], eltbuf[256], *cp, *elt = s; |
727 | struct stat sbuf; | |
728 | int i = 0, j = 0; | |
729 | ||
730 | do { /* DCL$PATH may be a search list */ | |
731 | while (1) { /* as may dev portion of any element */ | |
732 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
733 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
734 | cando_by_name(S_IWUSR,0,elt) ) { | |
735 | MgTAINTEDDIR_on(mg); | |
736 | return 0; | |
737 | } | |
738 | } | |
739 | if ((cp = strchr(elt, ':')) != Nullch) | |
740 | *cp = '\0'; | |
741 | if (my_trnlnm(elt, eltbuf, j++)) | |
742 | elt = eltbuf; | |
743 | else | |
744 | break; | |
745 | } | |
746 | j = 0; | |
747 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
748 | } | |
749 | #endif /* VMS */ | |
5aabfad6 | 750 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
a0d0e21e | 751 | char *strend = s + len; |
463ee0b2 LW |
752 | |
753 | while (s < strend) { | |
96827780 | 754 | char tmpbuf[256]; |
1e422769 | 755 | struct stat st; |
96827780 | 756 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
fc36a67e | 757 | s, strend, ':', &i); |
463ee0b2 | 758 | s++; |
96827780 MB |
759 | if (i >= sizeof tmpbuf /* too long -- assume the worst */ |
760 | || *tmpbuf != '/' | |
c6ed36e1 | 761 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 762 | MgTAINTEDDIR_on(mg); |
1e422769 | 763 | return 0; |
764 | } | |
463ee0b2 | 765 | } |
79072805 LW |
766 | } |
767 | } | |
39e571d4 | 768 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 769 | |
79072805 LW |
770 | return 0; |
771 | } | |
772 | ||
773 | int | |
864dbfa3 | 774 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 775 | { |
2d8e6c8d GS |
776 | STRLEN n_a; |
777 | my_setenv(MgPV(mg,n_a),Nullch); | |
85e6fe83 LW |
778 | return 0; |
779 | } | |
780 | ||
88e89b8a | 781 | int |
864dbfa3 | 782 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 783 | { |
784 | #if defined(VMS) | |
cea2e8a9 | 785 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 786 | #else |
d58bf5aa | 787 | dTHR; |
3280af22 | 788 | if (PL_localizing) { |
fb73857a | 789 | HE* entry; |
2d8e6c8d | 790 | STRLEN n_a; |
fb73857a | 791 | magic_clear_all_env(sv,mg); |
792 | hv_iterinit((HV*)sv); | |
793 | while (entry = hv_iternext((HV*)sv)) { | |
794 | I32 keylen; | |
795 | my_setenv(hv_iterkey(entry, &keylen), | |
2d8e6c8d | 796 | SvPV(hv_iterval((HV*)sv, entry), n_a)); |
fb73857a | 797 | } |
798 | } | |
799 | #endif | |
800 | return 0; | |
801 | } | |
802 | ||
803 | int | |
864dbfa3 | 804 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 805 | { |
3e3baf6d | 806 | #if defined(VMS) |
cea2e8a9 | 807 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
3e3baf6d | 808 | #else |
f2517201 | 809 | # ifdef WIN32 |
3e3baf6d TB |
810 | char *envv = GetEnvironmentStrings(); |
811 | char *cur = envv; | |
812 | STRLEN len; | |
813 | while (*cur) { | |
814 | char *end = strchr(cur,'='); | |
815 | if (end && end != cur) { | |
816 | *end = '\0'; | |
817 | my_setenv(cur,Nullch); | |
818 | *end = '='; | |
ac5c734f | 819 | cur = end + strlen(end+1)+2; |
3e3baf6d TB |
820 | } |
821 | else if ((len = strlen(cur))) | |
822 | cur += len+1; | |
823 | } | |
824 | FreeEnvironmentStrings(envv); | |
f2517201 | 825 | # else |
2c2d71f5 JH |
826 | # ifdef CYGWIN |
827 | I32 i; | |
828 | for (i = 0; environ[i]; i++) | |
829 | Safefree(environ[i]); | |
830 | # else | |
831 | # ifndef PERL_USE_SAFE_PUTENV | |
66b1d557 HM |
832 | I32 i; |
833 | ||
3280af22 | 834 | if (environ == PL_origenviron) |
f2517201 | 835 | environ = (char**)safesysmalloc(sizeof(char*)); |
66b1d557 HM |
836 | else |
837 | for (i = 0; environ[i]; i++) | |
f2517201 | 838 | safesysfree(environ[i]); |
2c2d71f5 JH |
839 | # endif /* PERL_USE_SAFE_PUTENV */ |
840 | # endif /* CYGWIN */ | |
f2517201 | 841 | |
66b1d557 HM |
842 | environ[0] = Nullch; |
843 | ||
f2517201 GS |
844 | # endif /* WIN32 */ |
845 | #endif /* VMS */ | |
3e3baf6d | 846 | return 0; |
66b1d557 HM |
847 | } |
848 | ||
849 | int | |
864dbfa3 | 850 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 851 | { |
852 | I32 i; | |
2d8e6c8d | 853 | STRLEN n_a; |
88e89b8a | 854 | /* Are we fetching a signal entry? */ |
2d8e6c8d | 855 | i = whichsig(MgPV(mg,n_a)); |
88e89b8a | 856 | if (i) { |
22c35a8c GS |
857 | if(PL_psig_ptr[i]) |
858 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 859 | else { |
ff68c719 | 860 | Sighandler_t sigstate = rsignal_state(i); |
861 | ||
88e89b8a | 862 | /* cache state so we don't fetch it again */ |
ff68c719 | 863 | if(sigstate == SIG_IGN) |
88e89b8a | 864 | sv_setpv(sv,"IGNORE"); |
865 | else | |
3280af22 | 866 | sv_setsv(sv,&PL_sv_undef); |
22c35a8c | 867 | PL_psig_ptr[i] = SvREFCNT_inc(sv); |
88e89b8a | 868 | SvTEMP_off(sv); |
869 | } | |
870 | } | |
871 | return 0; | |
872 | } | |
873 | int | |
864dbfa3 | 874 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 875 | { |
876 | I32 i; | |
2d8e6c8d | 877 | STRLEN n_a; |
88e89b8a | 878 | /* Are we clearing a signal entry? */ |
2d8e6c8d | 879 | i = whichsig(MgPV(mg,n_a)); |
88e89b8a | 880 | if (i) { |
22c35a8c GS |
881 | if(PL_psig_ptr[i]) { |
882 | SvREFCNT_dec(PL_psig_ptr[i]); | |
883 | PL_psig_ptr[i]=0; | |
88e89b8a | 884 | } |
22c35a8c GS |
885 | if(PL_psig_name[i]) { |
886 | SvREFCNT_dec(PL_psig_name[i]); | |
887 | PL_psig_name[i]=0; | |
88e89b8a | 888 | } |
889 | } | |
890 | return 0; | |
891 | } | |
3d37d572 | 892 | |
85e6fe83 | 893 | int |
864dbfa3 | 894 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 895 | { |
11343788 | 896 | dTHR; |
79072805 LW |
897 | register char *s; |
898 | I32 i; | |
748a9306 | 899 | SV** svp; |
e72dc28c | 900 | STRLEN len; |
a0d0e21e | 901 | |
e72dc28c | 902 | s = MgPV(mg,len); |
748a9306 LW |
903 | if (*s == '_') { |
904 | if (strEQ(s,"__DIE__")) | |
3280af22 | 905 | svp = &PL_diehook; |
748a9306 | 906 | else if (strEQ(s,"__WARN__")) |
3280af22 | 907 | svp = &PL_warnhook; |
748a9306 | 908 | else |
cea2e8a9 | 909 | Perl_croak(aTHX_ "No such hook: %s", s); |
748a9306 | 910 | i = 0; |
4633a7c4 LW |
911 | if (*svp) { |
912 | SvREFCNT_dec(*svp); | |
913 | *svp = 0; | |
914 | } | |
748a9306 LW |
915 | } |
916 | else { | |
917 | i = whichsig(s); /* ...no, a brick */ | |
918 | if (!i) { | |
599cee73 | 919 | if (ckWARN(WARN_SIGNAL) || strEQ(s,"ALARM")) |
cea2e8a9 | 920 | Perl_warner(aTHX_ WARN_SIGNAL, "No such signal: SIG%s", s); |
748a9306 LW |
921 | return 0; |
922 | } | |
22c35a8c GS |
923 | SvREFCNT_dec(PL_psig_name[i]); |
924 | SvREFCNT_dec(PL_psig_ptr[i]); | |
925 | PL_psig_ptr[i] = SvREFCNT_inc(sv); | |
88e89b8a | 926 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ |
e72dc28c | 927 | PL_psig_name[i] = newSVpvn(s, len); |
22c35a8c | 928 | SvREADONLY_on(PL_psig_name[i]); |
748a9306 | 929 | } |
a0d0e21e | 930 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
748a9306 | 931 | if (i) |
3280af22 | 932 | (void)rsignal(i, PL_sighandlerp); |
748a9306 LW |
933 | else |
934 | *svp = SvREFCNT_inc(sv); | |
a0d0e21e LW |
935 | return 0; |
936 | } | |
e72dc28c | 937 | s = SvPV_force(sv,len); |
748a9306 LW |
938 | if (strEQ(s,"IGNORE")) { |
939 | if (i) | |
ff68c719 | 940 | (void)rsignal(i, SIG_IGN); |
748a9306 LW |
941 | else |
942 | *svp = 0; | |
943 | } | |
944 | else if (strEQ(s,"DEFAULT") || !*s) { | |
945 | if (i) | |
ff68c719 | 946 | (void)rsignal(i, SIG_DFL); |
748a9306 LW |
947 | else |
948 | *svp = 0; | |
949 | } | |
79072805 | 950 | else { |
5aabfad6 | 951 | /* |
952 | * We should warn if HINT_STRICT_REFS, but without | |
953 | * access to a known hint bit in a known OP, we can't | |
954 | * tell whether HINT_STRICT_REFS is in force or not. | |
955 | */ | |
46fc3d4c | 956 | if (!strchr(s,':') && !strchr(s,'\'')) |
e72dc28c | 957 | sv_insert(sv, 0, 0, "main::", 6); |
748a9306 | 958 | if (i) |
3280af22 | 959 | (void)rsignal(i, PL_sighandlerp); |
748a9306 LW |
960 | else |
961 | *svp = SvREFCNT_inc(sv); | |
79072805 LW |
962 | } |
963 | return 0; | |
964 | } | |
965 | ||
966 | int | |
864dbfa3 | 967 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 968 | { |
3280af22 | 969 | PL_sub_generation++; |
463ee0b2 LW |
970 | return 0; |
971 | } | |
972 | ||
973 | int | |
864dbfa3 | 974 | Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 975 | { |
a0d0e21e | 976 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
3280af22 | 977 | PL_amagic_generation++; |
463ee0b2 | 978 | |
a0d0e21e LW |
979 | return 0; |
980 | } | |
463ee0b2 | 981 | |
946ec16e | 982 | int |
864dbfa3 | 983 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
984 | { |
985 | HV *hv = (HV*)LvTARG(sv); | |
986 | HE *entry; | |
987 | I32 i = 0; | |
988 | ||
989 | if (hv) { | |
990 | (void) hv_iterinit(hv); | |
33c27489 | 991 | if (! SvTIED_mg((SV*)hv, 'P')) |
6ff81951 GS |
992 | i = HvKEYS(hv); |
993 | else { | |
994 | /*SUPPRESS 560*/ | |
995 | while (entry = hv_iternext(hv)) { | |
996 | i++; | |
997 | } | |
998 | } | |
999 | } | |
1000 | ||
1001 | sv_setiv(sv, (IV)i); | |
1002 | return 0; | |
1003 | } | |
1004 | ||
1005 | int | |
864dbfa3 | 1006 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1007 | { |
1008 | if (LvTARG(sv)) { | |
1009 | hv_ksplit((HV*)LvTARG(sv), SvIV(sv)); | |
946ec16e | 1010 | } |
1011 | return 0; | |
93965878 | 1012 | } |
946ec16e | 1013 | |
e336de0d | 1014 | /* caller is responsible for stack switching/cleanup */ |
565764a8 | 1015 | STATIC int |
cea2e8a9 | 1016 | S_magic_methcall(pTHX_ SV *sv, MAGIC *mg, char *meth, I32 flags, int n, SV *val) |
a0d0e21e LW |
1017 | { |
1018 | dSP; | |
463ee0b2 | 1019 | |
924508f0 GS |
1020 | PUSHMARK(SP); |
1021 | EXTEND(SP, n); | |
33c27489 | 1022 | PUSHs(SvTIED_obj(sv, mg)); |
93965878 NIS |
1023 | if (n > 1) { |
1024 | if (mg->mg_ptr) { | |
565764a8 | 1025 | if (mg->mg_len >= 0) |
79cb57f6 | 1026 | PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len))); |
565764a8 | 1027 | else if (mg->mg_len == HEf_SVKEY) |
93965878 NIS |
1028 | PUSHs((SV*)mg->mg_ptr); |
1029 | } | |
1030 | else if (mg->mg_type == 'p') { | |
565764a8 | 1031 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); |
93965878 NIS |
1032 | } |
1033 | } | |
1034 | if (n > 2) { | |
1035 | PUSHs(val); | |
88e89b8a | 1036 | } |
463ee0b2 LW |
1037 | PUTBACK; |
1038 | ||
864dbfa3 | 1039 | return call_method(meth, flags); |
946ec16e | 1040 | } |
1041 | ||
76e3520e | 1042 | STATIC int |
cea2e8a9 | 1043 | S_magic_methpack(pTHX_ SV *sv, MAGIC *mg, char *meth) |
a0d0e21e LW |
1044 | { |
1045 | dSP; | |
463ee0b2 | 1046 | |
a0d0e21e LW |
1047 | ENTER; |
1048 | SAVETMPS; | |
e788e7d3 | 1049 | PUSHSTACKi(PERLSI_MAGIC); |
463ee0b2 | 1050 | |
33c27489 | 1051 | if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) { |
3280af22 | 1052 | sv_setsv(sv, *PL_stack_sp--); |
93965878 | 1053 | } |
463ee0b2 | 1054 | |
d3acc0f7 | 1055 | POPSTACK; |
a0d0e21e LW |
1056 | FREETMPS; |
1057 | LEAVE; | |
1058 | return 0; | |
1059 | } | |
463ee0b2 | 1060 | |
a0d0e21e | 1061 | int |
864dbfa3 | 1062 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1063 | { |
1064 | magic_methpack(sv,mg,"FETCH"); | |
1065 | if (mg->mg_ptr) | |
1066 | mg->mg_flags |= MGf_GSKIP; | |
463ee0b2 LW |
1067 | return 0; |
1068 | } | |
1069 | ||
1070 | int | |
864dbfa3 | 1071 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d GS |
1072 | { |
1073 | dSP; | |
a60c0954 | 1074 | ENTER; |
e788e7d3 | 1075 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1076 | magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv); |
d3acc0f7 | 1077 | POPSTACK; |
a60c0954 | 1078 | LEAVE; |
463ee0b2 LW |
1079 | return 0; |
1080 | } | |
1081 | ||
1082 | int | |
864dbfa3 | 1083 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1084 | { |
a0d0e21e LW |
1085 | return magic_methpack(sv,mg,"DELETE"); |
1086 | } | |
463ee0b2 | 1087 | |
93965878 NIS |
1088 | |
1089 | U32 | |
864dbfa3 | 1090 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
93965878 | 1091 | { |
e336de0d | 1092 | dSP; |
93965878 NIS |
1093 | U32 retval = 0; |
1094 | ||
1095 | ENTER; | |
1096 | SAVETMPS; | |
e788e7d3 | 1097 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1098 | if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) { |
3280af22 | 1099 | sv = *PL_stack_sp--; |
a60c0954 | 1100 | retval = (U32) SvIV(sv)-1; |
93965878 | 1101 | } |
d3acc0f7 | 1102 | POPSTACK; |
93965878 NIS |
1103 | FREETMPS; |
1104 | LEAVE; | |
1105 | return retval; | |
1106 | } | |
1107 | ||
cea2e8a9 GS |
1108 | int |
1109 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e LW |
1110 | { |
1111 | dSP; | |
463ee0b2 | 1112 | |
e336de0d | 1113 | ENTER; |
e788e7d3 | 1114 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1115 | PUSHMARK(SP); |
33c27489 | 1116 | XPUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 | 1117 | PUTBACK; |
864dbfa3 | 1118 | call_method("CLEAR", G_SCALAR|G_DISCARD); |
d3acc0f7 | 1119 | POPSTACK; |
a60c0954 | 1120 | LEAVE; |
463ee0b2 LW |
1121 | return 0; |
1122 | } | |
1123 | ||
1124 | int | |
864dbfa3 | 1125 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1126 | { |
463ee0b2 | 1127 | dSP; |
a0d0e21e | 1128 | char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 LW |
1129 | |
1130 | ENTER; | |
a0d0e21e | 1131 | SAVETMPS; |
e788e7d3 | 1132 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
1133 | PUSHMARK(SP); |
1134 | EXTEND(SP, 2); | |
33c27489 | 1135 | PUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 LW |
1136 | if (SvOK(key)) |
1137 | PUSHs(key); | |
1138 | PUTBACK; | |
1139 | ||
864dbfa3 | 1140 | if (call_method(meth, G_SCALAR)) |
3280af22 | 1141 | sv_setsv(key, *PL_stack_sp--); |
463ee0b2 | 1142 | |
d3acc0f7 | 1143 | POPSTACK; |
a0d0e21e LW |
1144 | FREETMPS; |
1145 | LEAVE; | |
79072805 LW |
1146 | return 0; |
1147 | } | |
1148 | ||
1149 | int | |
864dbfa3 | 1150 | Perl_magic_existspack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1151 | { |
1152 | return magic_methpack(sv,mg,"EXISTS"); | |
1153 | } | |
1154 | ||
1155 | int | |
864dbfa3 | 1156 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1157 | { |
11343788 | 1158 | dTHR; |
79072805 LW |
1159 | OP *o; |
1160 | I32 i; | |
1161 | GV* gv; | |
1162 | SV** svp; | |
2d8e6c8d | 1163 | STRLEN n_a; |
79072805 | 1164 | |
3280af22 | 1165 | gv = PL_DBline; |
79072805 | 1166 | i = SvTRUE(sv); |
188ea221 | 1167 | svp = av_fetch(GvAV(gv), |
2d8e6c8d | 1168 | atoi(MgPV(mg,n_a)), FALSE); |
8990e307 | 1169 | if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp))) |
93a17b20 | 1170 | o->op_private = i; |
0453d815 PM |
1171 | else if (ckWARN_d(WARN_INTERNAL)) |
1172 | Perl_warner(aTHX_ WARN_INTERNAL, "Can't break at that line\n"); | |
79072805 LW |
1173 | return 0; |
1174 | } | |
1175 | ||
1176 | int | |
864dbfa3 | 1177 | Perl_magic_getarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1178 | { |
0f15f207 | 1179 | dTHR; |
3280af22 | 1180 | sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase); |
79072805 LW |
1181 | return 0; |
1182 | } | |
1183 | ||
1184 | int | |
864dbfa3 | 1185 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1186 | { |
0f15f207 | 1187 | dTHR; |
3280af22 | 1188 | av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase); |
a0d0e21e LW |
1189 | return 0; |
1190 | } | |
1191 | ||
1192 | int | |
864dbfa3 | 1193 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1194 | { |
1195 | SV* lsv = LvTARG(sv); | |
1196 | ||
1197 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { | |
1198 | mg = mg_find(lsv, 'g'); | |
565764a8 | 1199 | if (mg && mg->mg_len >= 0) { |
0f15f207 | 1200 | dTHR; |
a0ed51b3 LW |
1201 | I32 i = mg->mg_len; |
1202 | if (IN_UTF8) | |
1203 | sv_pos_b2u(lsv, &i); | |
1204 | sv_setiv(sv, i + PL_curcop->cop_arybase); | |
a0d0e21e LW |
1205 | return 0; |
1206 | } | |
1207 | } | |
1208 | (void)SvOK_off(sv); | |
1209 | return 0; | |
1210 | } | |
1211 | ||
1212 | int | |
864dbfa3 | 1213 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1214 | { |
1215 | SV* lsv = LvTARG(sv); | |
1216 | SSize_t pos; | |
1217 | STRLEN len; | |
a0ed51b3 | 1218 | STRLEN ulen; |
c485e607 | 1219 | dTHR; |
a0d0e21e LW |
1220 | |
1221 | mg = 0; | |
1222 | ||
1223 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) | |
1224 | mg = mg_find(lsv, 'g'); | |
1225 | if (!mg) { | |
1226 | if (!SvOK(sv)) | |
1227 | return 0; | |
1228 | sv_magic(lsv, (SV*)0, 'g', Nullch, 0); | |
1229 | mg = mg_find(lsv, 'g'); | |
1230 | } | |
1231 | else if (!SvOK(sv)) { | |
565764a8 | 1232 | mg->mg_len = -1; |
a0d0e21e LW |
1233 | return 0; |
1234 | } | |
1235 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); | |
1236 | ||
c485e607 | 1237 | pos = SvIV(sv) - PL_curcop->cop_arybase; |
a0ed51b3 LW |
1238 | |
1239 | if (IN_UTF8) { | |
1240 | ulen = sv_len_utf8(lsv); | |
1241 | if (ulen) | |
1242 | len = ulen; | |
1243 | else | |
1244 | ulen = 0; | |
1245 | } | |
1246 | ||
a0d0e21e LW |
1247 | if (pos < 0) { |
1248 | pos += len; | |
1249 | if (pos < 0) | |
1250 | pos = 0; | |
1251 | } | |
1252 | else if (pos > len) | |
1253 | pos = len; | |
a0ed51b3 LW |
1254 | |
1255 | if (ulen) { | |
1256 | I32 p = pos; | |
1257 | sv_pos_u2b(lsv, &p, 0); | |
1258 | pos = p; | |
1259 | } | |
1260 | ||
565764a8 | 1261 | mg->mg_len = pos; |
71be2cbc | 1262 | mg->mg_flags &= ~MGf_MINMATCH; |
a0d0e21e | 1263 | |
79072805 LW |
1264 | return 0; |
1265 | } | |
1266 | ||
1267 | int | |
864dbfa3 | 1268 | Perl_magic_getglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1269 | { |
8646b087 | 1270 | if (SvFAKE(sv)) { /* FAKE globs can get coerced */ |
1271 | SvFAKE_off(sv); | |
946ec16e | 1272 | gv_efullname3(sv,((GV*)sv), "*"); |
8646b087 | 1273 | SvFAKE_on(sv); |
1274 | } | |
1275 | else | |
946ec16e | 1276 | gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */ |
79072805 LW |
1277 | return 0; |
1278 | } | |
1279 | ||
1280 | int | |
864dbfa3 | 1281 | Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1282 | { |
1283 | register char *s; | |
1284 | GV* gv; | |
2d8e6c8d | 1285 | STRLEN n_a; |
79072805 LW |
1286 | |
1287 | if (!SvOK(sv)) | |
1288 | return 0; | |
2d8e6c8d | 1289 | s = SvPV(sv, n_a); |
79072805 LW |
1290 | if (*s == '*' && s[1]) |
1291 | s++; | |
85e6fe83 | 1292 | gv = gv_fetchpv(s,TRUE, SVt_PVGV); |
79072805 LW |
1293 | if (sv == (SV*)gv) |
1294 | return 0; | |
1295 | if (GvGP(sv)) | |
88e89b8a | 1296 | gp_free((GV*)sv); |
79072805 | 1297 | GvGP(sv) = gp_ref(GvGP(gv)); |
79072805 LW |
1298 | return 0; |
1299 | } | |
1300 | ||
1301 | int | |
864dbfa3 | 1302 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1303 | { |
1304 | STRLEN len; | |
1305 | SV *lsv = LvTARG(sv); | |
1306 | char *tmps = SvPV(lsv,len); | |
1307 | I32 offs = LvTARGOFF(sv); | |
1308 | I32 rem = LvTARGLEN(sv); | |
1309 | ||
1310 | if (offs > len) | |
1311 | offs = len; | |
1312 | if (rem + offs > len) | |
1313 | rem = len - offs; | |
1314 | sv_setpvn(sv, tmps + offs, (STRLEN)rem); | |
1315 | return 0; | |
1316 | } | |
1317 | ||
1318 | int | |
864dbfa3 | 1319 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1320 | { |
8990e307 LW |
1321 | STRLEN len; |
1322 | char *tmps = SvPV(sv,len); | |
1323 | sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len); | |
79072805 LW |
1324 | return 0; |
1325 | } | |
1326 | ||
1327 | int | |
864dbfa3 | 1328 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1329 | { |
a863c7d1 | 1330 | dTHR; |
565764a8 DL |
1331 | TAINT_IF((mg->mg_len & 1) || |
1332 | (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */ | |
463ee0b2 LW |
1333 | return 0; |
1334 | } | |
1335 | ||
1336 | int | |
864dbfa3 | 1337 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1338 | { |
11343788 | 1339 | dTHR; |
3280af22 NIS |
1340 | if (PL_localizing) { |
1341 | if (PL_localizing == 1) | |
565764a8 | 1342 | mg->mg_len <<= 1; |
748a9306 | 1343 | else |
565764a8 | 1344 | mg->mg_len >>= 1; |
a0d0e21e | 1345 | } |
3280af22 | 1346 | else if (PL_tainted) |
565764a8 | 1347 | mg->mg_len |= 1; |
748a9306 | 1348 | else |
565764a8 | 1349 | mg->mg_len &= ~1; |
463ee0b2 LW |
1350 | return 0; |
1351 | } | |
1352 | ||
1353 | int | |
864dbfa3 | 1354 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1355 | { |
1356 | SV *lsv = LvTARG(sv); | |
6ff81951 GS |
1357 | |
1358 | if (!lsv) { | |
1359 | SvOK_off(sv); | |
1360 | return 0; | |
1361 | } | |
6ff81951 | 1362 | |
81e118e0 | 1363 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); |
6ff81951 GS |
1364 | return 0; |
1365 | } | |
1366 | ||
1367 | int | |
864dbfa3 | 1368 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1369 | { |
1370 | do_vecset(sv); /* XXX slurp this routine */ | |
1371 | return 0; | |
1372 | } | |
1373 | ||
1374 | int | |
864dbfa3 | 1375 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc | 1376 | { |
71be2cbc | 1377 | SV *targ = Nullsv; |
5f05dabc | 1378 | if (LvTARGLEN(sv)) { |
68dc0745 | 1379 | if (mg->mg_obj) { |
74e13ce4 GS |
1380 | SV *ahv = LvTARG(sv); |
1381 | if (SvTYPE(ahv) == SVt_PVHV) { | |
1382 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0); | |
1383 | if (he) | |
1384 | targ = HeVAL(he); | |
1385 | } | |
1386 | else { | |
1387 | SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, FALSE, 0); | |
1388 | if (svp) | |
1389 | targ = *svp; | |
1390 | } | |
68dc0745 | 1391 | } |
1392 | else { | |
3c78fafa | 1393 | AV* av = (AV*)LvTARG(sv); |
68dc0745 | 1394 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
1395 | targ = AvARRAY(av)[LvTARGOFF(sv)]; | |
1396 | } | |
3280af22 | 1397 | if (targ && targ != &PL_sv_undef) { |
e858de61 | 1398 | dTHR; /* just for SvREFCNT_dec */ |
68dc0745 | 1399 | /* somebody else defined it for us */ |
1400 | SvREFCNT_dec(LvTARG(sv)); | |
1401 | LvTARG(sv) = SvREFCNT_inc(targ); | |
1402 | LvTARGLEN(sv) = 0; | |
1403 | SvREFCNT_dec(mg->mg_obj); | |
1404 | mg->mg_obj = Nullsv; | |
1405 | mg->mg_flags &= ~MGf_REFCOUNTED; | |
1406 | } | |
5f05dabc | 1407 | } |
71be2cbc | 1408 | else |
1409 | targ = LvTARG(sv); | |
3280af22 | 1410 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc | 1411 | return 0; |
1412 | } | |
1413 | ||
1414 | int | |
864dbfa3 | 1415 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 1416 | { |
1417 | if (LvTARGLEN(sv)) | |
68dc0745 | 1418 | vivify_defelem(sv); |
1419 | if (LvTARG(sv)) { | |
5f05dabc | 1420 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 1421 | SvSETMAGIC(LvTARG(sv)); |
1422 | } | |
5f05dabc | 1423 | return 0; |
1424 | } | |
1425 | ||
71be2cbc | 1426 | void |
864dbfa3 | 1427 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 1428 | { |
e858de61 | 1429 | dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/ |
74e13ce4 GS |
1430 | MAGIC *mg; |
1431 | SV *value = Nullsv; | |
71be2cbc | 1432 | |
68dc0745 | 1433 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y'))) |
71be2cbc | 1434 | return; |
68dc0745 | 1435 | if (mg->mg_obj) { |
74e13ce4 | 1436 | SV *ahv = LvTARG(sv); |
2d8e6c8d | 1437 | STRLEN n_a; |
74e13ce4 | 1438 | if (SvTYPE(ahv) == SVt_PVHV) { |
af7f9c15 | 1439 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0); |
74e13ce4 GS |
1440 | if (he) |
1441 | value = HeVAL(he); | |
1442 | } | |
1443 | else { | |
af7f9c15 | 1444 | SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, TRUE, 0); |
74e13ce4 GS |
1445 | if (svp) |
1446 | value = *svp; | |
1447 | } | |
3280af22 | 1448 | if (!value || value == &PL_sv_undef) |
cea2e8a9 | 1449 | Perl_croak(aTHX_ PL_no_helem, SvPV(mg->mg_obj, n_a)); |
71be2cbc | 1450 | } |
68dc0745 | 1451 | else { |
1452 | AV* av = (AV*)LvTARG(sv); | |
5aabfad6 | 1453 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
68dc0745 | 1454 | LvTARG(sv) = Nullsv; /* array can't be extended */ |
1455 | else { | |
1456 | SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE); | |
3280af22 | 1457 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 | 1458 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 | 1459 | } |
1460 | } | |
3e3baf6d | 1461 | (void)SvREFCNT_inc(value); |
68dc0745 | 1462 | SvREFCNT_dec(LvTARG(sv)); |
1463 | LvTARG(sv) = value; | |
71be2cbc | 1464 | LvTARGLEN(sv) = 0; |
68dc0745 | 1465 | SvREFCNT_dec(mg->mg_obj); |
1466 | mg->mg_obj = Nullsv; | |
1467 | mg->mg_flags &= ~MGf_REFCOUNTED; | |
5f05dabc | 1468 | } |
1469 | ||
1470 | int | |
864dbfa3 | 1471 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 GS |
1472 | { |
1473 | AV *av = (AV*)mg->mg_obj; | |
1474 | SV **svp = AvARRAY(av); | |
1475 | I32 i = AvFILLp(av); | |
1476 | while (i >= 0) { | |
1477 | if (svp[i] && svp[i] != &PL_sv_undef) { | |
1478 | if (!SvWEAKREF(svp[i])) | |
cea2e8a9 | 1479 | Perl_croak(aTHX_ "panic: magic_killbackrefs"); |
810b8aa5 GS |
1480 | /* XXX Should we check that it hasn't changed? */ |
1481 | SvRV(svp[i]) = 0; | |
1482 | SvOK_off(svp[i]); | |
1483 | SvWEAKREF_off(svp[i]); | |
1484 | svp[i] = &PL_sv_undef; | |
1485 | } | |
1486 | i--; | |
1487 | } | |
1488 | return 0; | |
1489 | } | |
1490 | ||
1491 | int | |
864dbfa3 | 1492 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 1493 | { |
565764a8 | 1494 | mg->mg_len = -1; |
c6496cc7 | 1495 | SvSCREAM_off(sv); |
93a17b20 LW |
1496 | return 0; |
1497 | } | |
1498 | ||
1499 | int | |
864dbfa3 | 1500 | Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1501 | { |
463ee0b2 | 1502 | sv_unmagic(sv, 'B'); |
79072805 LW |
1503 | SvVALID_off(sv); |
1504 | return 0; | |
1505 | } | |
1506 | ||
1507 | int | |
864dbfa3 | 1508 | Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg) |
55497cff | 1509 | { |
1510 | sv_unmagic(sv, 'f'); | |
1511 | SvCOMPILED_off(sv); | |
1512 | return 0; | |
1513 | } | |
1514 | ||
1515 | int | |
864dbfa3 | 1516 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1517 | { |
1518 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
1519 | ||
1520 | if (uf && uf->uf_set) | |
1521 | (*uf->uf_set)(uf->uf_index, sv); | |
1522 | return 0; | |
1523 | } | |
1524 | ||
c277df42 | 1525 | int |
864dbfa3 | 1526 | Perl_magic_freeregexp(pTHX_ SV *sv, MAGIC *mg) |
c277df42 IZ |
1527 | { |
1528 | regexp *re = (regexp *)mg->mg_obj; | |
1529 | ReREFCNT_dec(re); | |
1530 | return 0; | |
1531 | } | |
1532 | ||
7a4c00b4 | 1533 | #ifdef USE_LOCALE_COLLATE |
79072805 | 1534 | int |
864dbfa3 | 1535 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 1536 | { |
1537 | /* | |
838b5b74 | 1538 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 1539 | * and vanished with a faint plop. |
1540 | */ | |
7a4c00b4 | 1541 | if (mg->mg_ptr) { |
1542 | Safefree(mg->mg_ptr); | |
1543 | mg->mg_ptr = NULL; | |
565764a8 | 1544 | mg->mg_len = -1; |
7a4c00b4 | 1545 | } |
bbce6d69 | 1546 | return 0; |
1547 | } | |
7a4c00b4 | 1548 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 1549 | |
1550 | int | |
864dbfa3 | 1551 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1552 | { |
11343788 | 1553 | dTHR; |
79072805 LW |
1554 | register char *s; |
1555 | I32 i; | |
8990e307 | 1556 | STRLEN len; |
79072805 | 1557 | switch (*mg->mg_ptr) { |
748a9306 | 1558 | case '\001': /* ^A */ |
3280af22 | 1559 | sv_setsv(PL_bodytarget, sv); |
748a9306 | 1560 | break; |
49460fe6 NIS |
1561 | case '\003': /* ^C */ |
1562 | PL_minus_c = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); | |
1563 | break; | |
1564 | ||
79072805 | 1565 | case '\004': /* ^D */ |
3280af22 | 1566 | PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000; |
79072805 LW |
1567 | DEBUG_x(dump_all()); |
1568 | break; | |
28f23441 | 1569 | case '\005': /* ^E */ |
1570 | #ifdef VMS | |
1571 | set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); | |
1572 | #else | |
048c1ddf | 1573 | # ifdef WIN32 |
22fae026 | 1574 | SetLastError( SvIV(sv) ); |
048c1ddf IZ |
1575 | # else |
1576 | # ifndef OS2 | |
f86702cc | 1577 | /* will anyone ever use this? */ |
1578 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4); | |
048c1ddf IZ |
1579 | # endif |
1580 | # endif | |
22fae026 | 1581 | #endif |
28f23441 | 1582 | break; |
79072805 | 1583 | case '\006': /* ^F */ |
3280af22 | 1584 | PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 | 1585 | break; |
a0d0e21e | 1586 | case '\010': /* ^H */ |
3280af22 | 1587 | PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
a0d0e21e | 1588 | break; |
9d116dd7 | 1589 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 NIS |
1590 | if (PL_inplace) |
1591 | Safefree(PL_inplace); | |
79072805 | 1592 | if (SvOK(sv)) |
2d8e6c8d | 1593 | PL_inplace = savepv(SvPV(sv,len)); |
79072805 | 1594 | else |
3280af22 | 1595 | PL_inplace = Nullch; |
79072805 | 1596 | break; |
28f23441 | 1597 | case '\017': /* ^O */ |
3280af22 NIS |
1598 | if (PL_osname) |
1599 | Safefree(PL_osname); | |
28f23441 | 1600 | if (SvOK(sv)) |
2d8e6c8d | 1601 | PL_osname = savepv(SvPV(sv,len)); |
28f23441 | 1602 | else |
3280af22 | 1603 | PL_osname = Nullch; |
28f23441 | 1604 | break; |
79072805 | 1605 | case '\020': /* ^P */ |
3280af22 | 1606 | PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1ee4443e IZ |
1607 | if (PL_perldb && !PL_DBsingle) |
1608 | init_debugger(); | |
79072805 LW |
1609 | break; |
1610 | case '\024': /* ^T */ | |
88e89b8a | 1611 | #ifdef BIG_TIME |
6b88bc9c | 1612 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 1613 | #else |
3280af22 | 1614 | PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
88e89b8a | 1615 | #endif |
79072805 | 1616 | break; |
4438c4b7 JH |
1617 | case '\027': /* ^W & $^Warnings */ |
1618 | if (*(mg->mg_ptr+1) == '\0') { | |
1619 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
1620 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); | |
1621 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) | |
0453d815 | 1622 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 1623 | } |
599cee73 | 1624 | } |
4438c4b7 JH |
1625 | else if (strEQ(mg->mg_ptr, "\027arnings")) { |
1626 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
1627 | if (memEQ(SvPVX(sv), WARN_ALLstring, WARNsize)) { | |
1628 | PL_compiling.cop_warnings = WARN_ALL; | |
1629 | PL_dowarn |= G_WARN_ONCE ; | |
1630 | } | |
1631 | else if (memEQ(SvPVX(sv), WARN_NONEstring, WARNsize)) | |
1632 | PL_compiling.cop_warnings = WARN_NONE; | |
1633 | else { | |
1634 | if (specialWARN(PL_compiling.cop_warnings)) | |
1635 | PL_compiling.cop_warnings = newSVsv(sv) ; | |
1636 | else | |
1637 | sv_setsv(PL_compiling.cop_warnings, sv); | |
1638 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) | |
1639 | PL_dowarn |= G_WARN_ONCE ; | |
1640 | } | |
1641 | } | |
1642 | } | |
79072805 LW |
1643 | break; |
1644 | case '.': | |
3280af22 NIS |
1645 | if (PL_localizing) { |
1646 | if (PL_localizing == 1) | |
1647 | save_sptr((SV**)&PL_last_in_gv); | |
748a9306 | 1648 | } |
3280af22 NIS |
1649 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
1650 | IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv); | |
79072805 LW |
1651 | break; |
1652 | case '^': | |
3280af22 | 1653 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
2d8e6c8d | 1654 | IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len)); |
3280af22 | 1655 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 LW |
1656 | break; |
1657 | case '~': | |
3280af22 | 1658 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
2d8e6c8d | 1659 | IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len)); |
3280af22 | 1660 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 LW |
1661 | break; |
1662 | case '=': | |
3280af22 | 1663 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1664 | break; |
1665 | case '-': | |
3280af22 NIS |
1666 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
1667 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) | |
1668 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; | |
79072805 LW |
1669 | break; |
1670 | case '%': | |
3280af22 | 1671 | IoPAGE(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1672 | break; |
1673 | case '|': | |
4b65379b | 1674 | { |
3280af22 | 1675 | IO *io = GvIOp(PL_defoutgv); |
4b65379b CS |
1676 | if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0) |
1677 | IoFLAGS(io) &= ~IOf_FLUSH; | |
1678 | else { | |
1679 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
1680 | PerlIO *ofp = IoOFP(io); | |
1681 | if (ofp) | |
1682 | (void)PerlIO_flush(ofp); | |
1683 | IoFLAGS(io) |= IOf_FLUSH; | |
1684 | } | |
1685 | } | |
79072805 LW |
1686 | } |
1687 | break; | |
1688 | case '*': | |
463ee0b2 | 1689 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
3280af22 | 1690 | PL_multiline = (i != 0); |
79072805 LW |
1691 | break; |
1692 | case '/': | |
3280af22 NIS |
1693 | SvREFCNT_dec(PL_nrs); |
1694 | PL_nrs = newSVsv(sv); | |
1695 | SvREFCNT_dec(PL_rs); | |
1696 | PL_rs = SvREFCNT_inc(PL_nrs); | |
79072805 LW |
1697 | break; |
1698 | case '\\': | |
3280af22 NIS |
1699 | if (PL_ors) |
1700 | Safefree(PL_ors); | |
e3c19b7b | 1701 | if (SvOK(sv) || SvGMAGICAL(sv)) |
3280af22 | 1702 | PL_ors = savepv(SvPV(sv,PL_orslen)); |
e3c19b7b | 1703 | else { |
3280af22 NIS |
1704 | PL_ors = Nullch; |
1705 | PL_orslen = 0; | |
e3c19b7b | 1706 | } |
79072805 LW |
1707 | break; |
1708 | case ',': | |
3280af22 NIS |
1709 | if (PL_ofs) |
1710 | Safefree(PL_ofs); | |
1711 | PL_ofs = savepv(SvPV(sv, PL_ofslen)); | |
79072805 LW |
1712 | break; |
1713 | case '#': | |
3280af22 NIS |
1714 | if (PL_ofmt) |
1715 | Safefree(PL_ofmt); | |
2d8e6c8d | 1716 | PL_ofmt = savepv(SvPV(sv,len)); |
79072805 LW |
1717 | break; |
1718 | case '[': | |
3280af22 | 1719 | PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1720 | break; |
1721 | case '?': | |
ff0cee69 | 1722 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
1723 | if (PL_localizing == 2) { |
1724 | PL_statusvalue = LvTARGOFF(sv); | |
1725 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 1726 | } |
1727 | else | |
1728 | #endif | |
1729 | #ifdef VMSISH_STATUS | |
1730 | if (VMSISH_STATUS) | |
1731 | STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv))); | |
1732 | else | |
1733 | #endif | |
1734 | STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); | |
79072805 LW |
1735 | break; |
1736 | case '!': | |
78987ded | 1737 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
f86702cc | 1738 | (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno); |
79072805 LW |
1739 | break; |
1740 | case '<': | |
3280af22 NIS |
1741 | PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1742 | if (PL_delaymagic) { | |
1743 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
1744 | break; /* don't do magic till later */ |
1745 | } | |
1746 | #ifdef HAS_SETRUID | |
b28d0864 | 1747 | (void)setruid((Uid_t)PL_uid); |
79072805 LW |
1748 | #else |
1749 | #ifdef HAS_SETREUID | |
3280af22 | 1750 | (void)setreuid((Uid_t)PL_uid, (Uid_t)-1); |
748a9306 | 1751 | #else |
85e6fe83 | 1752 | #ifdef HAS_SETRESUID |
b28d0864 | 1753 | (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 1754 | #else |
b28d0864 NIS |
1755 | if (PL_uid == PL_euid) /* special case $< = $> */ |
1756 | (void)PerlProc_setuid(PL_uid); | |
a0d0e21e | 1757 | else { |
d8eceb89 | 1758 | PL_uid = PerlProc_getuid(); |
cea2e8a9 | 1759 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 1760 | } |
79072805 LW |
1761 | #endif |
1762 | #endif | |
85e6fe83 | 1763 | #endif |
d8eceb89 | 1764 | PL_uid = PerlProc_getuid(); |
3280af22 | 1765 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
1766 | break; |
1767 | case '>': | |
3280af22 NIS |
1768 | PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1769 | if (PL_delaymagic) { | |
1770 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
1771 | break; /* don't do magic till later */ |
1772 | } | |
1773 | #ifdef HAS_SETEUID | |
3280af22 | 1774 | (void)seteuid((Uid_t)PL_euid); |
79072805 LW |
1775 | #else |
1776 | #ifdef HAS_SETREUID | |
b28d0864 | 1777 | (void)setreuid((Uid_t)-1, (Uid_t)PL_euid); |
85e6fe83 LW |
1778 | #else |
1779 | #ifdef HAS_SETRESUID | |
6b88bc9c | 1780 | (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1); |
79072805 | 1781 | #else |
b28d0864 NIS |
1782 | if (PL_euid == PL_uid) /* special case $> = $< */ |
1783 | PerlProc_setuid(PL_euid); | |
a0d0e21e | 1784 | else { |
e8ee3774 | 1785 | PL_euid = PerlProc_geteuid(); |
cea2e8a9 | 1786 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 1787 | } |
79072805 LW |
1788 | #endif |
1789 | #endif | |
85e6fe83 | 1790 | #endif |
d8eceb89 | 1791 | PL_euid = PerlProc_geteuid(); |
3280af22 | 1792 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
1793 | break; |
1794 | case '(': | |
3280af22 NIS |
1795 | PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1796 | if (PL_delaymagic) { | |
1797 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
1798 | break; /* don't do magic till later */ |
1799 | } | |
1800 | #ifdef HAS_SETRGID | |
b28d0864 | 1801 | (void)setrgid((Gid_t)PL_gid); |
79072805 LW |
1802 | #else |
1803 | #ifdef HAS_SETREGID | |
3280af22 | 1804 | (void)setregid((Gid_t)PL_gid, (Gid_t)-1); |
85e6fe83 LW |
1805 | #else |
1806 | #ifdef HAS_SETRESGID | |
b28d0864 | 1807 | (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1); |
79072805 | 1808 | #else |
b28d0864 NIS |
1809 | if (PL_gid == PL_egid) /* special case $( = $) */ |
1810 | (void)PerlProc_setgid(PL_gid); | |
748a9306 | 1811 | else { |
d8eceb89 | 1812 | PL_gid = PerlProc_getgid(); |
cea2e8a9 | 1813 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 1814 | } |
79072805 LW |
1815 | #endif |
1816 | #endif | |
85e6fe83 | 1817 | #endif |
d8eceb89 | 1818 | PL_gid = PerlProc_getgid(); |
3280af22 | 1819 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
1820 | break; |
1821 | case ')': | |
5cd24f17 | 1822 | #ifdef HAS_SETGROUPS |
1823 | { | |
2d8e6c8d | 1824 | char *p = SvPV(sv, len); |
5cd24f17 | 1825 | Groups_t gary[NGROUPS]; |
1826 | ||
5cd24f17 | 1827 | while (isSPACE(*p)) |
1828 | ++p; | |
2d4389e4 | 1829 | PL_egid = Atol(p); |
5cd24f17 | 1830 | for (i = 0; i < NGROUPS; ++i) { |
1831 | while (*p && !isSPACE(*p)) | |
1832 | ++p; | |
1833 | while (isSPACE(*p)) | |
1834 | ++p; | |
1835 | if (!*p) | |
1836 | break; | |
2d4389e4 | 1837 | gary[i] = Atol(p); |
5cd24f17 | 1838 | } |
8cc95fdb | 1839 | if (i) |
1840 | (void)setgroups(i, gary); | |
5cd24f17 | 1841 | } |
1842 | #else /* HAS_SETGROUPS */ | |
b28d0864 | 1843 | PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
5cd24f17 | 1844 | #endif /* HAS_SETGROUPS */ |
3280af22 NIS |
1845 | if (PL_delaymagic) { |
1846 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
1847 | break; /* don't do magic till later */ |
1848 | } | |
1849 | #ifdef HAS_SETEGID | |
3280af22 | 1850 | (void)setegid((Gid_t)PL_egid); |
79072805 LW |
1851 | #else |
1852 | #ifdef HAS_SETREGID | |
b28d0864 | 1853 | (void)setregid((Gid_t)-1, (Gid_t)PL_egid); |
85e6fe83 LW |
1854 | #else |
1855 | #ifdef HAS_SETRESGID | |
b28d0864 | 1856 | (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1); |
79072805 | 1857 | #else |
b28d0864 NIS |
1858 | if (PL_egid == PL_gid) /* special case $) = $( */ |
1859 | (void)PerlProc_setgid(PL_egid); | |
748a9306 | 1860 | else { |
d8eceb89 | 1861 | PL_egid = PerlProc_getegid(); |
cea2e8a9 | 1862 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 1863 | } |
79072805 LW |
1864 | #endif |
1865 | #endif | |
85e6fe83 | 1866 | #endif |
d8eceb89 | 1867 | PL_egid = PerlProc_getegid(); |
3280af22 | 1868 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
1869 | break; |
1870 | case ':': | |
2d8e6c8d | 1871 | PL_chopset = SvPV_force(sv,len); |
79072805 LW |
1872 | break; |
1873 | case '0': | |
3280af22 NIS |
1874 | if (!PL_origalen) { |
1875 | s = PL_origargv[0]; | |
79072805 LW |
1876 | s += strlen(s); |
1877 | /* See if all the arguments are contiguous in memory */ | |
3280af22 NIS |
1878 | for (i = 1; i < PL_origargc; i++) { |
1879 | if (PL_origargv[i] == s + 1 | |
fb73857a | 1880 | #ifdef OS2 |
6b88bc9c | 1881 | || PL_origargv[i] == s + 2 |
fb73857a | 1882 | #endif |
1883 | ) | |
379c4362 GS |
1884 | { |
1885 | ++s; | |
1886 | s += strlen(s); /* this one is ok too */ | |
1887 | } | |
fb73857a | 1888 | else |
1889 | break; | |
79072805 | 1890 | } |
bbce6d69 | 1891 | /* can grab env area too? */ |
3280af22 | 1892 | if (PL_origenviron && (PL_origenviron[0] == s + 1 |
fb73857a | 1893 | #ifdef OS2 |
6b88bc9c | 1894 | || (PL_origenviron[0] == s + 9 && (s += 8)) |
fb73857a | 1895 | #endif |
1896 | )) { | |
66b1d557 | 1897 | my_setenv("NoNe SuCh", Nullch); |
79072805 | 1898 | /* force copy of environment */ |
3280af22 | 1899 | for (i = 0; PL_origenviron[i]; i++) |
379c4362 GS |
1900 | if (PL_origenviron[i] == s + 1) { |
1901 | ++s; | |
1902 | s += strlen(s); | |
1903 | } | |
fb73857a | 1904 | else |
1905 | break; | |
79072805 | 1906 | } |
3280af22 | 1907 | PL_origalen = s - PL_origargv[0]; |
79072805 | 1908 | } |
a0d0e21e | 1909 | s = SvPV_force(sv,len); |
8990e307 | 1910 | i = len; |
3280af22 NIS |
1911 | if (i >= PL_origalen) { |
1912 | i = PL_origalen; | |
fb73857a | 1913 | /* don't allow system to limit $0 seen by script */ |
1914 | /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */ | |
3280af22 NIS |
1915 | Copy(s, PL_origargv[0], i, char); |
1916 | s = PL_origargv[0]+i; | |
fb73857a | 1917 | *s = '\0'; |
79072805 LW |
1918 | } |
1919 | else { | |
3280af22 NIS |
1920 | Copy(s, PL_origargv[0], i, char); |
1921 | s = PL_origargv[0]+i; | |
79072805 | 1922 | *s++ = '\0'; |
3280af22 | 1923 | while (++i < PL_origalen) |
8990e307 | 1924 | *s++ = ' '; |
3280af22 NIS |
1925 | s = PL_origargv[0]+i; |
1926 | for (i = 1; i < PL_origargc; i++) | |
1927 | PL_origargv[i] = Nullch; | |
79072805 LW |
1928 | } |
1929 | break; | |
a863c7d1 MB |
1930 | #ifdef USE_THREADS |
1931 | case '@': | |
38a03e6e | 1932 | sv_setsv(thr->errsv, sv); |
a863c7d1 MB |
1933 | break; |
1934 | #endif /* USE_THREADS */ | |
79072805 LW |
1935 | } |
1936 | return 0; | |
1937 | } | |
1938 | ||
f93b4edd MB |
1939 | #ifdef USE_THREADS |
1940 | int | |
864dbfa3 | 1941 | Perl_magic_mutexfree(pTHX_ SV *sv, MAGIC *mg) |
f93b4edd MB |
1942 | { |
1943 | dTHR; | |
bf49b057 | 1944 | DEBUG_S(PerlIO_printf(Perl_debug_log, "0x%lx: magic_mutexfree 0x%lx\n", |
bc1f4c86 | 1945 | (unsigned long)thr, (unsigned long)sv);) |
f93b4edd | 1946 | if (MgOWNER(mg)) |
cea2e8a9 | 1947 | Perl_croak(aTHX_ "panic: magic_mutexfree"); |
f93b4edd MB |
1948 | MUTEX_DESTROY(MgMUTEXP(mg)); |
1949 | COND_DESTROY(MgCONDP(mg)); | |
1950 | return 0; | |
1951 | } | |
1952 | #endif /* USE_THREADS */ | |
1953 | ||
79072805 | 1954 | I32 |
864dbfa3 | 1955 | Perl_whichsig(pTHX_ char *sig) |
79072805 LW |
1956 | { |
1957 | register char **sigv; | |
1958 | ||
22c35a8c | 1959 | for (sigv = PL_sig_name+1; *sigv; sigv++) |
79072805 | 1960 | if (strEQ(sig,*sigv)) |
22c35a8c | 1961 | return PL_sig_num[sigv - PL_sig_name]; |
79072805 LW |
1962 | #ifdef SIGCLD |
1963 | if (strEQ(sig,"CHLD")) | |
1964 | return SIGCLD; | |
1965 | #endif | |
1966 | #ifdef SIGCHLD | |
1967 | if (strEQ(sig,"CLD")) | |
1968 | return SIGCHLD; | |
1969 | #endif | |
1970 | return 0; | |
1971 | } | |
1972 | ||
84902520 TB |
1973 | static SV* sig_sv; |
1974 | ||
ecfc5424 | 1975 | Signal_t |
cea2e8a9 | 1976 | Perl_sighandler(int sig) |
79072805 | 1977 | { |
cea2e8a9 | 1978 | dTHX; |
79072805 | 1979 | dSP; |
00d579c5 | 1980 | GV *gv = Nullgv; |
a0d0e21e | 1981 | HV *st; |
3280af22 | 1982 | SV *sv, *tSv = PL_Sv; |
00d579c5 | 1983 | CV *cv = Nullcv; |
533c011a | 1984 | OP *myop = PL_op; |
84902520 | 1985 | U32 flags = 0; |
3280af22 NIS |
1986 | I32 o_save_i = PL_savestack_ix, type; |
1987 | XPV *tXpv = PL_Xpv; | |
84902520 | 1988 | |
3280af22 | 1989 | if (PL_savestack_ix + 15 <= PL_savestack_max) |
84902520 | 1990 | flags |= 1; |
3280af22 | 1991 | if (PL_markstack_ptr < PL_markstack_max - 2) |
84902520 | 1992 | flags |= 4; |
3280af22 | 1993 | if (PL_retstack_ix < PL_retstack_max - 2) |
84902520 | 1994 | flags |= 8; |
3280af22 | 1995 | if (PL_scopestack_ix < PL_scopestack_max - 3) |
84902520 TB |
1996 | flags |= 16; |
1997 | ||
22c35a8c | 1998 | if (!PL_psig_ptr[sig]) |
cea2e8a9 | 1999 | Perl_die(aTHX_ "Signal SIG%s received, but no signal handler set.\n", |
22c35a8c | 2000 | PL_sig_name[sig]); |
ff0cee69 | 2001 | |
84902520 TB |
2002 | /* Max number of items pushed there is 3*n or 4. We cannot fix |
2003 | infinity, so we fix 4 (in fact 5): */ | |
2004 | if (flags & 1) { | |
3280af22 NIS |
2005 | PL_savestack_ix += 5; /* Protect save in progress. */ |
2006 | o_save_i = PL_savestack_ix; | |
c76ac1ee | 2007 | SAVEDESTRUCTOR_X(unwind_handler_stack, (void*)&flags); |
84902520 TB |
2008 | } |
2009 | if (flags & 4) | |
3280af22 | 2010 | PL_markstack_ptr++; /* Protect mark. */ |
84902520 | 2011 | if (flags & 8) { |
3280af22 NIS |
2012 | PL_retstack_ix++; |
2013 | PL_retstack[PL_retstack_ix] = NULL; | |
84902520 TB |
2014 | } |
2015 | if (flags & 16) | |
3280af22 | 2016 | PL_scopestack_ix += 1; |
84902520 | 2017 | /* sv_2cv is too complicated, try a simpler variant first: */ |
22c35a8c | 2018 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig])) |
84902520 | 2019 | || SvTYPE(cv) != SVt_PVCV) |
22c35a8c | 2020 | cv = sv_2cv(PL_psig_ptr[sig],&st,&gv,TRUE); |
84902520 | 2021 | |
a0d0e21e | 2022 | if (!cv || !CvROOT(cv)) { |
599cee73 | 2023 | if (ckWARN(WARN_SIGNAL)) |
cea2e8a9 | 2024 | Perl_warner(aTHX_ WARN_SIGNAL, "SIG%s handler \"%s\" not defined.\n", |
22c35a8c | 2025 | PL_sig_name[sig], (gv ? GvENAME(gv) |
00d579c5 GS |
2026 | : ((cv && CvGV(cv)) |
2027 | ? GvENAME(CvGV(cv)) | |
2028 | : "__ANON__"))); | |
2029 | goto cleanup; | |
79072805 LW |
2030 | } |
2031 | ||
22c35a8c GS |
2032 | if(PL_psig_name[sig]) { |
2033 | sv = SvREFCNT_inc(PL_psig_name[sig]); | |
84902520 TB |
2034 | flags |= 64; |
2035 | sig_sv = sv; | |
2036 | } else { | |
ff0cee69 | 2037 | sv = sv_newmortal(); |
22c35a8c | 2038 | sv_setpv(sv,PL_sig_name[sig]); |
88e89b8a | 2039 | } |
e336de0d | 2040 | |
e788e7d3 | 2041 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 2042 | PUSHMARK(SP); |
79072805 | 2043 | PUSHs(sv); |
79072805 | 2044 | PUTBACK; |
a0d0e21e | 2045 | |
864dbfa3 | 2046 | call_sv((SV*)cv, G_DISCARD); |
79072805 | 2047 | |
d3acc0f7 | 2048 | POPSTACK; |
00d579c5 | 2049 | cleanup: |
84902520 | 2050 | if (flags & 1) |
3280af22 | 2051 | PL_savestack_ix -= 8; /* Unprotect save in progress. */ |
84902520 | 2052 | if (flags & 4) |
3280af22 | 2053 | PL_markstack_ptr--; |
84902520 | 2054 | if (flags & 8) |
3280af22 | 2055 | PL_retstack_ix--; |
84902520 | 2056 | if (flags & 16) |
3280af22 | 2057 | PL_scopestack_ix -= 1; |
84902520 TB |
2058 | if (flags & 64) |
2059 | SvREFCNT_dec(sv); | |
533c011a | 2060 | PL_op = myop; /* Apparently not needed... */ |
84902520 | 2061 | |
3280af22 NIS |
2062 | PL_Sv = tSv; /* Restore global temporaries. */ |
2063 | PL_Xpv = tXpv; | |
79072805 LW |
2064 | return; |
2065 | } | |
4e35701f NIS |
2066 | |
2067 | ||
51371543 GS |
2068 | #ifdef PERL_OBJECT |
2069 | #define NO_XSLOCKS | |
2070 | #include "XSUB.h" | |
2071 | #endif | |
2072 | ||
2073 | static void | |
2074 | restore_magic(pTHXo_ void *p) | |
2075 | { | |
2076 | dTHR; | |
2077 | MGS* mgs = SSPTR((I32)p, MGS*); | |
2078 | SV* sv = mgs->mgs_sv; | |
2079 | ||
2080 | if (!sv) | |
2081 | return; | |
2082 | ||
2083 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) | |
2084 | { | |
2085 | if (mgs->mgs_flags) | |
2086 | SvFLAGS(sv) |= mgs->mgs_flags; | |
2087 | else | |
2088 | mg_magical(sv); | |
2089 | if (SvGMAGICAL(sv)) | |
2090 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
2091 | } | |
2092 | ||
2093 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ | |
2094 | ||
2095 | /* If we're still on top of the stack, pop us off. (That condition | |
2096 | * will be satisfied if restore_magic was called explicitly, but *not* | |
2097 | * if it's being called via leave_scope.) | |
2098 | * The reason for doing this is that otherwise, things like sv_2cv() | |
2099 | * may leave alloc gunk on the savestack, and some code | |
2100 | * (e.g. sighandler) doesn't expect that... | |
2101 | */ | |
2102 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
2103 | { | |
2104 | I32 popval = SSPOPINT; | |
c76ac1ee | 2105 | assert(popval == SAVEt_DESTRUCTOR_X); |
51371543 GS |
2106 | PL_savestack_ix -= 2; |
2107 | popval = SSPOPINT; | |
2108 | assert(popval == SAVEt_ALLOC); | |
2109 | popval = SSPOPINT; | |
2110 | PL_savestack_ix -= popval; | |
2111 | } | |
2112 | ||
2113 | } | |
2114 | ||
2115 | static void | |
2116 | unwind_handler_stack(pTHXo_ void *p) | |
2117 | { | |
2118 | dTHR; | |
2119 | U32 flags = *(U32*)p; | |
2120 | ||
2121 | if (flags & 1) | |
2122 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ | |
2123 | /* cxstack_ix-- Not needed, die already unwound it. */ | |
2124 | if (flags & 64) | |
2125 | SvREFCNT_dec(sig_sv); | |
2126 | } |