Commit | Line | Data |
---|---|---|
a0d0e21e LW |
1 | /* pp_hot.c |
2 | * | |
3 | * Copyright (c) 1991-1994, Larry Wall | |
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 | * | |
8 | */ | |
9 | ||
10 | /* | |
11 | * Then he heard Merry change the note, and up went the Horn-cry of Buckland, | |
12 | * shaking the air. | |
13 | * | |
14 | * Awake! Awake! Fear, Fire, Foes! Awake! | |
15 | * Fire, Foes! Awake! | |
16 | */ | |
17 | ||
18 | #include "EXTERN.h" | |
19 | #include "perl.h" | |
20 | ||
21 | /* Hot code. */ | |
22 | ||
23 | PP(pp_const) | |
24 | { | |
25 | dSP; | |
26 | XPUSHs(cSVOP->op_sv); | |
27 | RETURN; | |
28 | } | |
29 | ||
30 | PP(pp_nextstate) | |
31 | { | |
32 | curcop = (COP*)op; | |
33 | TAINT_NOT; /* Each statement is presumed innocent */ | |
34 | stack_sp = stack_base + cxstack[cxstack_ix].blk_oldsp; | |
35 | FREETMPS; | |
36 | return NORMAL; | |
37 | } | |
38 | ||
39 | PP(pp_gvsv) | |
40 | { | |
41 | dSP; | |
42 | EXTEND(sp,1); | |
43 | if (op->op_private & OPpLVAL_INTRO) | |
44 | PUSHs(save_scalar(cGVOP->op_gv)); | |
45 | else | |
46 | PUSHs(GvSV(cGVOP->op_gv)); | |
47 | RETURN; | |
48 | } | |
49 | ||
50 | PP(pp_null) | |
51 | { | |
52 | return NORMAL; | |
53 | } | |
54 | ||
55 | PP(pp_pushmark) | |
56 | { | |
57 | PUSHMARK(stack_sp); | |
58 | return NORMAL; | |
59 | } | |
60 | ||
61 | PP(pp_stringify) | |
62 | { | |
63 | dSP; dTARGET; | |
64 | STRLEN len; | |
65 | char *s; | |
66 | s = SvPV(TOPs,len); | |
67 | sv_setpvn(TARG,s,len); | |
68 | SETTARG; | |
69 | RETURN; | |
70 | } | |
71 | ||
72 | PP(pp_gv) | |
73 | { | |
74 | dSP; | |
75 | XPUSHs((SV*)cGVOP->op_gv); | |
76 | RETURN; | |
77 | } | |
78 | ||
79 | PP(pp_and) | |
80 | { | |
81 | dSP; | |
82 | if (!SvTRUE(TOPs)) | |
83 | RETURN; | |
84 | else { | |
85 | --SP; | |
86 | RETURNOP(cLOGOP->op_other); | |
87 | } | |
88 | } | |
89 | ||
90 | PP(pp_sassign) | |
91 | { | |
92 | dSP; dPOPTOPssrl; | |
93 | if (op->op_private & OPpASSIGN_BACKWARDS) { | |
94 | SV *temp; | |
95 | temp = left; left = right; right = temp; | |
96 | } | |
97 | if (tainting && tainted && (!SvGMAGICAL(left) || !SvSMAGICAL(left) || | |
98 | !mg_find(left, 't'))) { | |
99 | TAINT_NOT; | |
100 | } | |
101 | SvSetSV(right, left); | |
102 | SvSETMAGIC(right); | |
103 | SETs(right); | |
104 | RETURN; | |
105 | } | |
106 | ||
107 | PP(pp_cond_expr) | |
108 | { | |
109 | dSP; | |
110 | if (SvTRUEx(POPs)) | |
111 | RETURNOP(cCONDOP->op_true); | |
112 | else | |
113 | RETURNOP(cCONDOP->op_false); | |
114 | } | |
115 | ||
116 | PP(pp_unstack) | |
117 | { | |
118 | I32 oldsave; | |
119 | TAINT_NOT; /* Each statement is presumed innocent */ | |
120 | stack_sp = stack_base + cxstack[cxstack_ix].blk_oldsp; | |
121 | FREETMPS; | |
122 | oldsave = scopestack[scopestack_ix - 1]; | |
123 | LEAVE_SCOPE(oldsave); | |
124 | return NORMAL; | |
125 | } | |
126 | ||
127 | PP(pp_seq) | |
128 | { | |
129 | dSP; tryAMAGICbinSET(seq,0); | |
130 | { | |
131 | dPOPTOPssrl; | |
132 | SETs( sv_eq(left, right) ? &sv_yes : &sv_no ); | |
133 | RETURN; | |
134 | } | |
135 | } | |
136 | ||
137 | PP(pp_concat) | |
138 | { | |
139 | dSP; dATARGET; dPOPTOPssrl; | |
140 | STRLEN len; | |
141 | char *s; | |
142 | if (TARG != left) { | |
143 | s = SvPV(left,len); | |
144 | sv_setpvn(TARG,s,len); | |
145 | } | |
146 | s = SvPV(right,len); | |
147 | sv_catpvn(TARG,s,len); | |
148 | SETTARG; | |
149 | RETURN; | |
150 | } | |
151 | ||
152 | PP(pp_padsv) | |
153 | { | |
154 | dSP; dTARGET; | |
155 | XPUSHs(TARG); | |
156 | if (op->op_private & OPpLVAL_INTRO) | |
157 | SAVECLEARSV(curpad[op->op_targ]); | |
158 | RETURN; | |
159 | } | |
160 | ||
161 | PP(pp_readline) | |
162 | { | |
163 | last_in_gv = (GV*)(*stack_sp--); | |
164 | return do_readline(); | |
165 | } | |
166 | ||
167 | PP(pp_eq) | |
168 | { | |
169 | dSP; tryAMAGICbinSET(eq,0); | |
170 | { | |
171 | dPOPnv; | |
172 | SETs((TOPn == value) ? &sv_yes : &sv_no); | |
173 | RETURN; | |
174 | } | |
175 | } | |
176 | ||
177 | PP(pp_preinc) | |
178 | { | |
179 | dSP; | |
180 | sv_inc(TOPs); | |
181 | SvSETMAGIC(TOPs); | |
182 | return NORMAL; | |
183 | } | |
184 | ||
185 | PP(pp_or) | |
186 | { | |
187 | dSP; | |
188 | if (SvTRUE(TOPs)) | |
189 | RETURN; | |
190 | else { | |
191 | --SP; | |
192 | RETURNOP(cLOGOP->op_other); | |
193 | } | |
194 | } | |
195 | ||
196 | PP(pp_add) | |
197 | { | |
198 | dSP; dATARGET; tryAMAGICbin(add,opASSIGN); | |
199 | { | |
200 | dPOPTOPnnrl; | |
201 | SETn( left + right ); | |
202 | RETURN; | |
203 | } | |
204 | } | |
205 | ||
206 | PP(pp_aelemfast) | |
207 | { | |
208 | dSP; | |
209 | AV *av = GvAV((GV*)cSVOP->op_sv); | |
210 | SV** svp = av_fetch(av, op->op_private, op->op_flags & OPf_MOD); | |
211 | PUSHs(svp ? *svp : &sv_undef); | |
212 | RETURN; | |
213 | } | |
214 | ||
215 | PP(pp_join) | |
216 | { | |
217 | dSP; dMARK; dTARGET; | |
218 | MARK++; | |
219 | do_join(TARG, *MARK, MARK, SP); | |
220 | SP = MARK; | |
221 | SETs(TARG); | |
222 | RETURN; | |
223 | } | |
224 | ||
225 | PP(pp_pushre) | |
226 | { | |
227 | dSP; | |
228 | XPUSHs((SV*)op); | |
229 | RETURN; | |
230 | } | |
231 | ||
232 | /* Oversized hot code. */ | |
233 | ||
234 | PP(pp_print) | |
235 | { | |
236 | dSP; dMARK; dORIGMARK; | |
237 | GV *gv; | |
238 | IO *io; | |
239 | register FILE *fp; | |
240 | ||
241 | if (op->op_flags & OPf_STACKED) | |
242 | gv = (GV*)*++MARK; | |
243 | else | |
244 | gv = defoutgv; | |
245 | if (!(io = GvIO(gv))) { | |
246 | if (dowarn) | |
247 | warn("Filehandle %s never opened", GvNAME(gv)); | |
248 | errno = EBADF; | |
249 | goto just_say_no; | |
250 | } | |
251 | else if (!(fp = IoOFP(io))) { | |
252 | if (dowarn) { | |
253 | if (IoIFP(io)) | |
254 | warn("Filehandle %s opened only for input", GvNAME(gv)); | |
255 | else | |
256 | warn("print on closed filehandle %s", GvNAME(gv)); | |
257 | } | |
258 | errno = EBADF; | |
259 | goto just_say_no; | |
260 | } | |
261 | else { | |
262 | MARK++; | |
263 | if (ofslen) { | |
264 | while (MARK <= SP) { | |
265 | if (!do_print(*MARK, fp)) | |
266 | break; | |
267 | MARK++; | |
268 | if (MARK <= SP) { | |
269 | if (fwrite1(ofs, 1, ofslen, fp) == 0 || ferror(fp)) { | |
270 | MARK--; | |
271 | break; | |
272 | } | |
273 | } | |
274 | } | |
275 | } | |
276 | else { | |
277 | while (MARK <= SP) { | |
278 | if (!do_print(*MARK, fp)) | |
279 | break; | |
280 | MARK++; | |
281 | } | |
282 | } | |
283 | if (MARK <= SP) | |
284 | goto just_say_no; | |
285 | else { | |
286 | if (orslen) | |
287 | if (fwrite1(ors, 1, orslen, fp) == 0 || ferror(fp)) | |
288 | goto just_say_no; | |
289 | ||
290 | if (IoFLAGS(io) & IOf_FLUSH) | |
291 | if (fflush(fp) == EOF) | |
292 | goto just_say_no; | |
293 | } | |
294 | } | |
295 | SP = ORIGMARK; | |
296 | PUSHs(&sv_yes); | |
297 | RETURN; | |
298 | ||
299 | just_say_no: | |
300 | SP = ORIGMARK; | |
301 | PUSHs(&sv_undef); | |
302 | RETURN; | |
303 | } | |
304 | ||
305 | PP(pp_rv2av) | |
306 | { | |
307 | dSP; dPOPss; | |
308 | ||
309 | AV *av; | |
310 | ||
311 | if (SvROK(sv)) { | |
312 | wasref: | |
313 | av = (AV*)SvRV(sv); | |
314 | if (SvTYPE(av) != SVt_PVAV) | |
315 | DIE("Not an ARRAY reference"); | |
316 | if (op->op_private & OPpLVAL_INTRO) | |
317 | av = (AV*)save_svref((SV**)sv); | |
318 | if (op->op_flags & OPf_REF) { | |
319 | PUSHs((SV*)av); | |
320 | RETURN; | |
321 | } | |
322 | } | |
323 | else { | |
324 | if (SvTYPE(sv) == SVt_PVAV) { | |
325 | av = (AV*)sv; | |
326 | if (op->op_flags & OPf_REF) { | |
327 | PUSHs((SV*)av); | |
328 | RETURN; | |
329 | } | |
330 | } | |
331 | else { | |
332 | if (SvTYPE(sv) != SVt_PVGV) { | |
333 | if (SvGMAGICAL(sv)) { | |
334 | mg_get(sv); | |
335 | if (SvROK(sv)) | |
336 | goto wasref; | |
337 | } | |
338 | if (!SvOK(sv)) { | |
339 | if (op->op_flags & OPf_REF || | |
340 | op->op_private & HINT_STRICT_REFS) | |
341 | DIE(no_usym, "an ARRAY"); | |
342 | RETPUSHUNDEF; | |
343 | } | |
344 | if (op->op_private & HINT_STRICT_REFS) | |
345 | DIE(no_symref, "an ARRAY"); | |
346 | sv = (SV*)gv_fetchpv(SvPV(sv, na), TRUE, SVt_PVAV); | |
347 | } | |
348 | av = GvAVn(sv); | |
349 | if (op->op_private & OPpLVAL_INTRO) | |
350 | av = save_ary(sv); | |
351 | if (op->op_flags & OPf_REF) { | |
352 | PUSHs((SV*)av); | |
353 | RETURN; | |
354 | } | |
355 | } | |
356 | } | |
357 | ||
358 | if (GIMME == G_ARRAY) { | |
359 | I32 maxarg = AvFILL(av) + 1; | |
360 | EXTEND(SP, maxarg); | |
361 | Copy(AvARRAY(av), SP+1, maxarg, SV*); | |
362 | SP += maxarg; | |
363 | } | |
364 | else { | |
365 | dTARGET; | |
366 | I32 maxarg = AvFILL(av) + 1; | |
367 | PUSHi(maxarg); | |
368 | } | |
369 | RETURN; | |
370 | } | |
371 | ||
372 | PP(pp_rv2hv) | |
373 | { | |
374 | ||
375 | dSP; dTOPss; | |
376 | ||
377 | HV *hv; | |
378 | ||
379 | if (SvROK(sv)) { | |
380 | wasref: | |
381 | hv = (HV*)SvRV(sv); | |
382 | if (SvTYPE(hv) != SVt_PVHV) | |
383 | DIE("Not a HASH reference"); | |
384 | if (op->op_private & OPpLVAL_INTRO) | |
385 | hv = (HV*)save_svref((SV**)sv); | |
386 | if (op->op_flags & OPf_REF) { | |
387 | SETs((SV*)hv); | |
388 | RETURN; | |
389 | } | |
390 | } | |
391 | else { | |
392 | if (SvTYPE(sv) == SVt_PVHV) { | |
393 | hv = (HV*)sv; | |
394 | if (op->op_flags & OPf_REF) { | |
395 | SETs((SV*)hv); | |
396 | RETURN; | |
397 | } | |
398 | } | |
399 | else { | |
400 | if (SvTYPE(sv) != SVt_PVGV) { | |
401 | if (SvGMAGICAL(sv)) { | |
402 | mg_get(sv); | |
403 | if (SvROK(sv)) | |
404 | goto wasref; | |
405 | } | |
406 | if (!SvOK(sv)) { | |
407 | if (op->op_flags & OPf_REF || | |
408 | op->op_private & HINT_STRICT_REFS) | |
409 | DIE(no_usym, "a HASH"); | |
410 | RETSETUNDEF; | |
411 | } | |
412 | if (op->op_private & HINT_STRICT_REFS) | |
413 | DIE(no_symref, "a HASH"); | |
414 | sv = (SV*)gv_fetchpv(SvPV(sv, na), TRUE, SVt_PVHV); | |
415 | } | |
416 | hv = GvHVn(sv); | |
417 | if (op->op_private & OPpLVAL_INTRO) | |
418 | hv = save_hash(sv); | |
419 | if (op->op_flags & OPf_REF) { | |
420 | SETs((SV*)hv); | |
421 | RETURN; | |
422 | } | |
423 | } | |
424 | } | |
425 | ||
426 | if (GIMME == G_ARRAY) { /* array wanted */ | |
427 | *stack_sp = (SV*)hv; | |
428 | return do_kv(ARGS); | |
429 | } | |
430 | else { | |
431 | dTARGET; | |
432 | if (HvFILL(hv)) { | |
433 | sprintf(buf, "%d/%d", HvFILL(hv), HvMAX(hv)+1); | |
434 | sv_setpv(TARG, buf); | |
435 | } | |
436 | else | |
437 | sv_setiv(TARG, 0); | |
438 | SETTARG; | |
439 | RETURN; | |
440 | } | |
441 | } | |
442 | ||
443 | PP(pp_aassign) | |
444 | { | |
445 | dSP; | |
446 | SV **lastlelem = stack_sp; | |
447 | SV **lastrelem = stack_base + POPMARK; | |
448 | SV **firstrelem = stack_base + POPMARK + 1; | |
449 | SV **firstlelem = lastrelem + 1; | |
450 | ||
451 | register SV **relem; | |
452 | register SV **lelem; | |
453 | ||
454 | register SV *sv; | |
455 | register AV *ary; | |
456 | ||
457 | HV *hash; | |
458 | I32 i; | |
459 | int magic; | |
460 | ||
461 | delaymagic = DM_DELAY; /* catch simultaneous items */ | |
462 | ||
463 | /* If there's a common identifier on both sides we have to take | |
464 | * special care that assigning the identifier on the left doesn't | |
465 | * clobber a value on the right that's used later in the list. | |
466 | */ | |
467 | if (op->op_private & OPpASSIGN_COMMON) { | |
468 | for (relem = firstrelem; relem <= lastrelem; relem++) { | |
469 | /*SUPPRESS 560*/ | |
470 | if (sv = *relem) | |
471 | *relem = sv_mortalcopy(sv); | |
472 | } | |
473 | } | |
474 | ||
475 | relem = firstrelem; | |
476 | lelem = firstlelem; | |
477 | ary = Null(AV*); | |
478 | hash = Null(HV*); | |
479 | while (lelem <= lastlelem) { | |
480 | sv = *lelem++; | |
481 | switch (SvTYPE(sv)) { | |
482 | case SVt_PVAV: | |
483 | ary = (AV*)sv; | |
484 | magic = SvSMAGICAL(ary) != 0; | |
485 | ||
486 | av_clear(ary); | |
487 | i = 0; | |
488 | while (relem <= lastrelem) { /* gobble up all the rest */ | |
489 | sv = NEWSV(28,0); | |
490 | assert(*relem); | |
491 | sv_setsv(sv,*relem); | |
492 | *(relem++) = sv; | |
493 | (void)av_store(ary,i++,sv); | |
494 | if (magic) | |
495 | mg_set(sv); | |
496 | } | |
497 | break; | |
498 | case SVt_PVHV: { | |
499 | char *tmps; | |
500 | SV *tmpstr; | |
501 | ||
502 | hash = (HV*)sv; | |
503 | magic = SvSMAGICAL(hash) != 0; | |
504 | hv_clear(hash); | |
505 | ||
506 | while (relem < lastrelem) { /* gobble up all the rest */ | |
507 | STRLEN len; | |
508 | if (*relem) | |
509 | sv = *(relem++); | |
510 | else | |
511 | sv = &sv_no, relem++; | |
512 | tmps = SvPV(sv, len); | |
513 | tmpstr = NEWSV(29,0); | |
514 | if (*relem) | |
515 | sv_setsv(tmpstr,*relem); /* value */ | |
516 | *(relem++) = tmpstr; | |
517 | (void)hv_store(hash,tmps,len,tmpstr,0); | |
518 | if (magic) | |
519 | mg_set(tmpstr); | |
520 | } | |
521 | } | |
522 | break; | |
523 | default: | |
524 | if (SvTHINKFIRST(sv)) { | |
525 | if (SvREADONLY(sv) && curcop != &compiling) { | |
526 | if (sv != &sv_undef && sv != &sv_yes && sv != &sv_no) | |
527 | DIE(no_modify); | |
528 | if (relem <= lastrelem) | |
529 | relem++; | |
530 | break; | |
531 | } | |
532 | if (SvROK(sv)) | |
533 | sv_unref(sv); | |
534 | } | |
535 | if (relem <= lastrelem) { | |
536 | sv_setsv(sv, *relem); | |
537 | *(relem++) = sv; | |
538 | } | |
539 | else | |
540 | sv_setsv(sv, &sv_undef); | |
541 | SvSETMAGIC(sv); | |
542 | break; | |
543 | } | |
544 | } | |
545 | if (delaymagic & ~DM_DELAY) { | |
546 | if (delaymagic & DM_UID) { | |
547 | #ifdef HAS_SETRESUID | |
548 | (void)setresuid(uid,euid,(Uid_t)-1); | |
549 | #else /* not HAS_SETRESUID */ | |
550 | #ifdef HAS_SETREUID | |
551 | (void)setreuid(uid,euid); | |
552 | #else /* not HAS_SETREUID */ | |
553 | #ifdef HAS_SETRUID | |
554 | if ((delaymagic & DM_UID) == DM_RUID) { | |
555 | (void)setruid(uid); | |
556 | delaymagic =~ DM_RUID; | |
557 | } | |
558 | #endif /* HAS_SETRUID */ | |
559 | #endif /* HAS_SETRESUID */ | |
560 | #ifdef HAS_SETEUID | |
561 | if ((delaymagic & DM_UID) == DM_EUID) { | |
562 | (void)seteuid(uid); | |
563 | delaymagic =~ DM_EUID; | |
564 | } | |
565 | #endif /* HAS_SETEUID */ | |
566 | if (delaymagic & DM_UID) { | |
567 | if (uid != euid) | |
568 | DIE("No setreuid available"); | |
569 | (void)setuid(uid); | |
570 | } | |
571 | #endif /* not HAS_SETREUID */ | |
572 | uid = (int)getuid(); | |
573 | euid = (int)geteuid(); | |
574 | } | |
575 | if (delaymagic & DM_GID) { | |
576 | #ifdef HAS_SETRESGID | |
577 | (void)setresgid(gid,egid,(Gid_t)-1); | |
578 | #else /* not HAS_SETREGID */ | |
579 | #ifdef HAS_SETREGID | |
580 | (void)setregid(gid,egid); | |
581 | #else /* not HAS_SETREGID */ | |
582 | #endif /* not HAS_SETRESGID */ | |
583 | #ifdef HAS_SETRGID | |
584 | if ((delaymagic & DM_GID) == DM_RGID) { | |
585 | (void)setrgid(gid); | |
586 | delaymagic =~ DM_RGID; | |
587 | } | |
588 | #endif /* HAS_SETRGID */ | |
589 | #ifdef HAS_SETRESGID | |
590 | (void)setresgid(gid,egid,(Gid_t)-1); | |
591 | #else /* not HAS_SETREGID */ | |
592 | #ifdef HAS_SETEGID | |
593 | if ((delaymagic & DM_GID) == DM_EGID) { | |
594 | (void)setegid(gid); | |
595 | delaymagic =~ DM_EGID; | |
596 | } | |
597 | #endif /* HAS_SETEGID */ | |
598 | if (delaymagic & DM_GID) { | |
599 | if (gid != egid) | |
600 | DIE("No setregid available"); | |
601 | (void)setgid(gid); | |
602 | } | |
603 | #endif /* not HAS_SETRESGID */ | |
604 | #endif /* not HAS_SETREGID */ | |
605 | gid = (int)getgid(); | |
606 | egid = (int)getegid(); | |
607 | } | |
608 | tainting |= (euid != uid || egid != gid); | |
609 | } | |
610 | delaymagic = 0; | |
611 | if (GIMME == G_ARRAY) { | |
612 | if (ary || hash) | |
613 | SP = lastrelem; | |
614 | else | |
615 | SP = firstrelem + (lastlelem - firstlelem); | |
616 | RETURN; | |
617 | } | |
618 | else { | |
619 | SP = firstrelem; | |
620 | for (relem = firstrelem; relem <= lastrelem; ++relem) { | |
621 | if (SvOK(*relem)) { | |
622 | dTARGET; | |
623 | ||
624 | SETi(lastrelem - firstrelem + 1); | |
625 | RETURN; | |
626 | } | |
627 | } | |
628 | RETSETUNDEF; | |
629 | } | |
630 | } | |
631 | ||
632 | PP(pp_match) | |
633 | { | |
634 | dSP; dTARG; | |
635 | register PMOP *pm = cPMOP; | |
636 | register char *t; | |
637 | register char *s; | |
638 | char *strend; | |
639 | I32 global; | |
640 | I32 safebase; | |
641 | char *truebase; | |
642 | register REGEXP *rx = pm->op_pmregexp; | |
643 | I32 gimme = GIMME; | |
644 | STRLEN len; | |
645 | ||
646 | if (op->op_flags & OPf_STACKED) | |
647 | TARG = POPs; | |
648 | else { | |
649 | TARG = GvSV(defgv); | |
650 | EXTEND(SP,1); | |
651 | } | |
652 | s = SvPV(TARG, len); | |
653 | strend = s + len; | |
654 | if (!s) | |
655 | DIE("panic: do_match"); | |
656 | ||
657 | if (pm->op_pmflags & PMf_USED) { | |
658 | if (gimme == G_ARRAY) | |
659 | RETURN; | |
660 | RETPUSHNO; | |
661 | } | |
662 | ||
663 | if (!rx->prelen && curpm) { | |
664 | pm = curpm; | |
665 | rx = pm->op_pmregexp; | |
666 | } | |
667 | truebase = t = s; | |
668 | if (global = pm->op_pmflags & PMf_GLOBAL) { | |
669 | rx->startp[0] = 0; | |
670 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { | |
671 | MAGIC* mg = mg_find(TARG, 'g'); | |
672 | if (mg && mg->mg_len >= 0) | |
673 | rx->endp[0] = rx->startp[0] = s + mg->mg_len; | |
674 | } | |
675 | } | |
676 | safebase = (gimme == G_ARRAY) || global; | |
677 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { | |
678 | SAVEINT(multiline); | |
679 | multiline = pm->op_pmflags & PMf_MULTILINE; | |
680 | } | |
681 | ||
682 | play_it_again: | |
683 | if (global && rx->startp[0]) { | |
684 | t = s = rx->endp[0]; | |
685 | if (s > strend) | |
686 | goto nope; | |
687 | } | |
688 | if (pm->op_pmshort) { | |
689 | if (pm->op_pmflags & PMf_SCANFIRST) { | |
690 | if (SvSCREAM(TARG)) { | |
691 | if (screamfirst[BmRARE(pm->op_pmshort)] < 0) | |
692 | goto nope; | |
693 | else if (!(s = screaminstr(TARG, pm->op_pmshort))) | |
694 | goto nope; | |
695 | else if (pm->op_pmflags & PMf_ALL) | |
696 | goto yup; | |
697 | } | |
698 | else if (!(s = fbm_instr((unsigned char*)s, | |
699 | (unsigned char*)strend, pm->op_pmshort))) | |
700 | goto nope; | |
701 | else if (pm->op_pmflags & PMf_ALL) | |
702 | goto yup; | |
703 | if (s && rx->regback >= 0) { | |
704 | ++BmUSEFUL(pm->op_pmshort); | |
705 | s -= rx->regback; | |
706 | if (s < t) | |
707 | s = t; | |
708 | } | |
709 | else | |
710 | s = t; | |
711 | } | |
712 | else if (!multiline) { | |
713 | if (*SvPVX(pm->op_pmshort) != *s || | |
714 | bcmp(SvPVX(pm->op_pmshort), s, pm->op_pmslen) ) { | |
715 | if (pm->op_pmflags & PMf_FOLD) { | |
716 | if (ibcmp((U8*)SvPVX(pm->op_pmshort), (U8*)s, pm->op_pmslen) ) | |
717 | goto nope; | |
718 | } | |
719 | else | |
720 | goto nope; | |
721 | } | |
722 | } | |
723 | if (!rx->naughty && --BmUSEFUL(pm->op_pmshort) < 0) { | |
724 | SvREFCNT_dec(pm->op_pmshort); | |
725 | pm->op_pmshort = Nullsv; /* opt is being useless */ | |
726 | } | |
727 | } | |
728 | if (!rx->nparens && !global) { | |
729 | gimme = G_SCALAR; /* accidental array context? */ | |
730 | safebase = FALSE; | |
731 | } | |
732 | if (regexec(rx, s, strend, truebase, 0, | |
733 | SvSCREAM(TARG) ? TARG : Nullsv, | |
734 | safebase)) { | |
735 | curpm = pm; | |
736 | if (pm->op_pmflags & PMf_ONCE) | |
737 | pm->op_pmflags |= PMf_USED; | |
738 | goto gotcha; | |
739 | } | |
740 | else | |
741 | goto ret_no; | |
742 | /*NOTREACHED*/ | |
743 | ||
744 | gotcha: | |
745 | if (gimme == G_ARRAY) { | |
746 | I32 iters, i, len; | |
747 | ||
748 | iters = rx->nparens; | |
749 | if (global && !iters) | |
750 | i = 1; | |
751 | else | |
752 | i = 0; | |
753 | EXTEND(SP, iters + i); | |
754 | for (i = !i; i <= iters; i++) { | |
755 | PUSHs(sv_newmortal()); | |
756 | /*SUPPRESS 560*/ | |
757 | if ((s = rx->startp[i]) && rx->endp[i] ) { | |
758 | len = rx->endp[i] - s; | |
759 | sv_setpvn(*SP, s, len); | |
760 | } | |
761 | } | |
762 | if (global) { | |
763 | truebase = rx->subbeg; | |
764 | if (rx->startp[0] && rx->startp[0] == rx->endp[0]) | |
765 | ++rx->endp[0]; | |
766 | goto play_it_again; | |
767 | } | |
768 | RETURN; | |
769 | } | |
770 | else { | |
771 | if (global) { | |
772 | MAGIC* mg = 0; | |
773 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) | |
774 | mg = mg_find(TARG, 'g'); | |
775 | if (!mg) { | |
776 | sv_magic(TARG, (SV*)0, 'g', Nullch, 0); | |
777 | mg = mg_find(TARG, 'g'); | |
778 | } | |
779 | mg->mg_len = rx->startp[0] ? rx->endp[0] - truebase : -1; | |
780 | } | |
781 | RETPUSHYES; | |
782 | } | |
783 | ||
784 | yup: | |
785 | ++BmUSEFUL(pm->op_pmshort); | |
786 | curpm = pm; | |
787 | if (pm->op_pmflags & PMf_ONCE) | |
788 | pm->op_pmflags |= PMf_USED; | |
789 | if (global) { | |
790 | rx->subbeg = truebase; | |
791 | rx->subend = strend; | |
792 | rx->startp[0] = s; | |
793 | rx->endp[0] = s + SvCUR(pm->op_pmshort); | |
794 | goto gotcha; | |
795 | } | |
796 | if (sawampersand) { | |
797 | char *tmps; | |
798 | ||
799 | if (rx->subbase) | |
800 | Safefree(rx->subbase); | |
801 | tmps = rx->subbase = savepvn(t, strend-t); | |
802 | rx->subbeg = tmps; | |
803 | rx->subend = tmps + (strend-t); | |
804 | tmps = rx->startp[0] = tmps + (s - t); | |
805 | rx->endp[0] = tmps + SvCUR(pm->op_pmshort); | |
806 | } | |
807 | RETPUSHYES; | |
808 | ||
809 | nope: | |
810 | if (pm->op_pmshort) | |
811 | ++BmUSEFUL(pm->op_pmshort); | |
812 | ||
813 | ret_no: | |
814 | if (global) { | |
815 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { | |
816 | MAGIC* mg = mg_find(TARG, 'g'); | |
817 | if (mg) | |
818 | mg->mg_len = -1; | |
819 | } | |
820 | } | |
821 | if (gimme == G_ARRAY) | |
822 | RETURN; | |
823 | RETPUSHNO; | |
824 | } | |
825 | ||
826 | OP * | |
827 | do_readline() | |
828 | { | |
829 | dSP; dTARGETSTACKED; | |
830 | register SV *sv; | |
831 | STRLEN tmplen = 0; | |
832 | STRLEN offset; | |
833 | FILE *fp; | |
834 | register IO *io = GvIO(last_in_gv); | |
835 | register I32 type = op->op_type; | |
836 | ||
837 | fp = Nullfp; | |
838 | if (io) { | |
839 | fp = IoIFP(io); | |
840 | if (!fp) { | |
841 | if (IoFLAGS(io) & IOf_ARGV) { | |
842 | if (IoFLAGS(io) & IOf_START) { | |
843 | IoFLAGS(io) &= ~IOf_START; | |
844 | IoLINES(io) = 0; | |
845 | if (av_len(GvAVn(last_in_gv)) < 0) { | |
846 | SV *tmpstr = newSVpv("-", 1); /* assume stdin */ | |
847 | av_push(GvAVn(last_in_gv), tmpstr); | |
848 | } | |
849 | } | |
850 | fp = nextargv(last_in_gv); | |
851 | if (!fp) { /* Note: fp != IoIFP(io) */ | |
852 | (void)do_close(last_in_gv, FALSE); /* now it does*/ | |
853 | IoFLAGS(io) |= IOf_START; | |
854 | } | |
855 | } | |
856 | else if (type == OP_GLOB) { | |
857 | SV *tmpcmd = NEWSV(55, 0); | |
858 | SV *tmpglob = POPs; | |
859 | ENTER; | |
860 | SAVEFREESV(tmpcmd); | |
861 | #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */ | |
862 | /* since spawning off a process is a real performance hit */ | |
863 | { | |
864 | #include <descrip.h> | |
865 | #include <lib$routines.h> | |
866 | #include <nam.h> | |
867 | #include <rmsdef.h> | |
868 | char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'}; | |
869 | char vmsspec[NAM$C_MAXRSS+1]; | |
870 | char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp; | |
871 | char tmpfnam[L_tmpnam] = "SYS$SCRATCH:"; | |
872 | $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;"); | |
873 | FILE *tmpfp; | |
874 | STRLEN i; | |
875 | struct dsc$descriptor_s wilddsc | |
876 | = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0}; | |
877 | struct dsc$descriptor_vs rsdsc | |
878 | = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt}; | |
879 | unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0; | |
880 | ||
881 | /* We could find out if there's an explicit dev/dir or version | |
882 | by peeking into lib$find_file's internal context at | |
883 | ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb | |
884 | but that's unsupported, so I don't want to do it now and | |
885 | have it bite someone in the future. */ | |
886 | strcat(tmpfnam,tmpnam(NULL)); | |
887 | cp = SvPV(tmpglob,i); | |
888 | for (; i; i--) { | |
889 | if (cp[i] == ';') hasver = 1; | |
890 | if (cp[i] == '.') { | |
891 | if (sts) hasver = 1; | |
892 | else sts = 1; | |
893 | } | |
894 | if (cp[i] == '/') { | |
895 | hasdir = isunix = 1; | |
896 | break; | |
897 | } | |
898 | if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') { | |
899 | hasdir = 1; | |
900 | break; | |
901 | } | |
902 | } | |
903 | if ((tmpfp = fopen(tmpfnam,"w+","fop=dlt")) != NULL) { | |
904 | ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL); | |
905 | if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer); | |
906 | while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt, | |
907 | &dfltdsc,NULL,NULL,NULL))&1)) { | |
908 | end = rstr + (unsigned long int) *rslt; | |
909 | if (!hasver) while (*end != ';') end--; | |
910 | *(end++) = '\n'; *end = '\0'; | |
911 | for (cp = rstr; *cp; cp++) *cp = _tolower(*cp); | |
912 | if (hasdir) { | |
913 | if (isunix) trim_unixpath(SvPVX(tmpglob),rstr); | |
914 | begin = rstr; | |
915 | } | |
916 | else { | |
917 | begin = end; | |
918 | while (*(--begin) != ']' && *begin != '>') ; | |
919 | ++begin; | |
920 | } | |
921 | ok = (fputs(begin,tmpfp) != EOF); | |
922 | } | |
923 | if (cxt) (void)lib$find_file_end(&cxt); | |
924 | if (ok && sts != RMS$_NMF) ok = 0; | |
925 | if (!ok) { | |
926 | fp = NULL; | |
927 | } | |
928 | else { | |
929 | rewind(tmpfp); | |
930 | IoTYPE(io) = '<'; | |
931 | IoIFP(io) = fp = tmpfp; | |
932 | } | |
933 | } | |
934 | } | |
935 | #else /* !VMS */ | |
936 | #ifdef DOSISH | |
937 | sv_setpv(tmpcmd, "perlglob "); | |
938 | sv_catsv(tmpcmd, tmpglob); | |
939 | sv_catpv(tmpcmd, " |"); | |
940 | #else | |
941 | #ifdef CSH | |
942 | sv_setpvn(tmpcmd, cshname, cshlen); | |
943 | sv_catpv(tmpcmd, " -cf 'set nonomatch; glob "); | |
944 | sv_catsv(tmpcmd, tmpglob); | |
945 | sv_catpv(tmpcmd, "'|"); | |
946 | #else | |
947 | sv_setpv(tmpcmd, "echo "); | |
948 | sv_catsv(tmpcmd, tmpglob); | |
949 | #if 'z' - 'a' == 25 | |
950 | sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|"); | |
951 | #else | |
952 | sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|"); | |
953 | #endif | |
954 | #endif /* !CSH */ | |
955 | #endif /* !MSDOS */ | |
956 | (void)do_open(last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),Nullfp); | |
957 | fp = IoIFP(io); | |
958 | #endif /* !VMS */ | |
959 | LEAVE; | |
960 | } | |
961 | } | |
962 | else if (type == OP_GLOB) | |
963 | SP--; | |
964 | } | |
965 | if (!fp) { | |
966 | if (dowarn) | |
967 | warn("Read on closed filehandle <%s>", GvENAME(last_in_gv)); | |
968 | if (GIMME == G_SCALAR) { | |
969 | (void)SvOK_off(TARG); | |
970 | PUSHTARG; | |
971 | } | |
972 | RETURN; | |
973 | } | |
974 | if (GIMME == G_ARRAY) { | |
975 | sv = sv_2mortal(NEWSV(57, 80)); | |
976 | offset = 0; | |
977 | } | |
978 | else { | |
979 | sv = TARG; | |
980 | (void)SvUPGRADE(sv, SVt_PV); | |
981 | tmplen = SvLEN(sv); /* remember if already alloced */ | |
982 | if (!tmplen) | |
983 | Sv_Grow(sv, 80); /* try short-buffering it */ | |
984 | if (type == OP_RCATLINE) | |
985 | offset = SvCUR(sv); | |
986 | else | |
987 | offset = 0; | |
988 | } | |
989 | for (;;) { | |
990 | if (!sv_gets(sv, fp, offset)) { | |
991 | clearerr(fp); | |
992 | if (IoFLAGS(io) & IOf_ARGV) { | |
993 | fp = nextargv(last_in_gv); | |
994 | if (fp) | |
995 | continue; | |
996 | (void)do_close(last_in_gv, FALSE); | |
997 | IoFLAGS(io) |= IOf_START; | |
998 | } | |
999 | else if (type == OP_GLOB) { | |
1000 | (void)do_close(last_in_gv, FALSE); | |
1001 | } | |
1002 | if (GIMME == G_SCALAR) { | |
1003 | (void)SvOK_off(TARG); | |
1004 | PUSHTARG; | |
1005 | } | |
1006 | RETURN; | |
1007 | } | |
1008 | IoLINES(io)++; | |
1009 | XPUSHs(sv); | |
1010 | if (tainting) { | |
1011 | tainted = TRUE; | |
1012 | SvTAINT(sv); /* Anything from the outside world...*/ | |
1013 | } | |
1014 | if (type == OP_GLOB) { | |
1015 | char *tmps; | |
1016 | ||
1017 | if (SvCUR(sv) > 0) | |
1018 | SvCUR(sv)--; | |
1019 | if (*SvEND(sv) == rschar) | |
1020 | *SvEND(sv) = '\0'; | |
1021 | else | |
1022 | SvCUR(sv)++; | |
1023 | for (tmps = SvPVX(sv); *tmps; tmps++) | |
1024 | if (!isALPHA(*tmps) && !isDIGIT(*tmps) && | |
1025 | strchr("$&*(){}[]'\";\\|?<>~`", *tmps)) | |
1026 | break; | |
1027 | if (*tmps && Stat(SvPVX(sv), &statbuf) < 0) { | |
1028 | (void)POPs; /* Unmatched wildcard? Chuck it... */ | |
1029 | continue; | |
1030 | } | |
1031 | } | |
1032 | if (GIMME == G_ARRAY) { | |
1033 | if (SvLEN(sv) - SvCUR(sv) > 20) { | |
1034 | SvLEN_set(sv, SvCUR(sv)+1); | |
1035 | Renew(SvPVX(sv), SvLEN(sv), char); | |
1036 | } | |
1037 | sv = sv_2mortal(NEWSV(58, 80)); | |
1038 | continue; | |
1039 | } | |
1040 | else if (!tmplen && SvLEN(sv) - SvCUR(sv) > 80) { | |
1041 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ | |
1042 | if (SvCUR(sv) < 60) | |
1043 | SvLEN_set(sv, 80); | |
1044 | else | |
1045 | SvLEN_set(sv, SvCUR(sv)+40); /* allow some slop */ | |
1046 | Renew(SvPVX(sv), SvLEN(sv), char); | |
1047 | } | |
1048 | RETURN; | |
1049 | } | |
1050 | } | |
1051 | ||
1052 | PP(pp_enter) | |
1053 | { | |
1054 | dSP; | |
1055 | register CONTEXT *cx; | |
1056 | I32 gimme; | |
1057 | ||
1058 | /* | |
1059 | * We don't just use the GIMME macro here because it assumes there's | |
1060 | * already a context, which ain't necessarily so at initial startup. | |
1061 | */ | |
1062 | ||
1063 | if (op->op_flags & OPf_KNOW) | |
1064 | gimme = op->op_flags & OPf_LIST; | |
1065 | else if (cxstack_ix >= 0) | |
1066 | gimme = cxstack[cxstack_ix].blk_gimme; | |
1067 | else | |
1068 | gimme = G_SCALAR; | |
1069 | ||
1070 | ENTER; | |
1071 | ||
1072 | SAVETMPS; | |
1073 | PUSHBLOCK(cx, CXt_BLOCK, sp); | |
1074 | ||
1075 | RETURN; | |
1076 | } | |
1077 | ||
1078 | PP(pp_helem) | |
1079 | { | |
1080 | dSP; | |
1081 | SV** svp; | |
1082 | SV *keysv = POPs; | |
1083 | STRLEN keylen; | |
1084 | char *key = SvPV(keysv, keylen); | |
1085 | HV *hv = (HV*)POPs; | |
1086 | I32 lval = op->op_flags & OPf_MOD; | |
1087 | ||
1088 | if (SvTYPE(hv) != SVt_PVHV) | |
1089 | RETPUSHUNDEF; | |
1090 | svp = hv_fetch(hv, key, keylen, lval); | |
1091 | if (lval) { | |
1092 | if (!svp || *svp == &sv_undef) | |
1093 | DIE(no_helem, key); | |
1094 | if (op->op_private & OPpLVAL_INTRO) | |
1095 | save_svref(svp); | |
1096 | else if (op->op_private & (OPpDEREF_HV|OPpDEREF_AV)) { | |
1097 | SV* sv = *svp; | |
1098 | if (SvGMAGICAL(sv)) | |
1099 | mg_get(sv); | |
1100 | if (!SvOK(sv)) { | |
1101 | (void)SvUPGRADE(sv, SVt_RV); | |
1102 | SvRV(sv) = (op->op_private & OPpDEREF_HV ? | |
1103 | (SV*)newHV() : (SV*)newAV()); | |
1104 | SvROK_on(sv); | |
1105 | SvSETMAGIC(sv); | |
1106 | } | |
1107 | } | |
1108 | } | |
1109 | PUSHs(svp ? *svp : &sv_undef); | |
1110 | RETURN; | |
1111 | } | |
1112 | ||
1113 | PP(pp_leave) | |
1114 | { | |
1115 | dSP; | |
1116 | register CONTEXT *cx; | |
1117 | register SV **mark; | |
1118 | SV **newsp; | |
1119 | PMOP *newpm; | |
1120 | I32 gimme; | |
1121 | ||
1122 | if (op->op_flags & OPf_SPECIAL) { | |
1123 | cx = &cxstack[cxstack_ix]; | |
1124 | cx->blk_oldpm = curpm; /* fake block should preserve $1 et al */ | |
1125 | } | |
1126 | ||
1127 | POPBLOCK(cx,newpm); | |
1128 | ||
1129 | if (op->op_flags & OPf_KNOW) | |
1130 | gimme = op->op_flags & OPf_LIST; | |
1131 | else if (cxstack_ix >= 0) | |
1132 | gimme = cxstack[cxstack_ix].blk_gimme; | |
1133 | else | |
1134 | gimme = G_SCALAR; | |
1135 | ||
1136 | if (gimme == G_SCALAR) { | |
1137 | if (op->op_private & OPpLEAVE_VOID) | |
1138 | SP = newsp; | |
1139 | else { | |
1140 | MARK = newsp + 1; | |
1141 | if (MARK <= SP) | |
1142 | if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)) | |
1143 | *MARK = TOPs; | |
1144 | else | |
1145 | *MARK = sv_mortalcopy(TOPs); | |
1146 | else { | |
1147 | MEXTEND(mark,0); | |
1148 | *MARK = &sv_undef; | |
1149 | } | |
1150 | SP = MARK; | |
1151 | } | |
1152 | } | |
1153 | else { | |
1154 | for (mark = newsp + 1; mark <= SP; mark++) | |
1155 | if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) | |
1156 | *mark = sv_mortalcopy(*mark); | |
1157 | /* in case LEAVE wipes old return values */ | |
1158 | } | |
1159 | curpm = newpm; /* Don't pop $1 et al till now */ | |
1160 | ||
1161 | LEAVE; | |
1162 | ||
1163 | RETURN; | |
1164 | } | |
1165 | ||
1166 | PP(pp_iter) | |
1167 | { | |
1168 | dSP; | |
1169 | register CONTEXT *cx; | |
1170 | SV *sv; | |
1171 | ||
1172 | EXTEND(sp, 1); | |
1173 | cx = &cxstack[cxstack_ix]; | |
1174 | if (cx->cx_type != CXt_LOOP) | |
1175 | DIE("panic: pp_iter"); | |
1176 | ||
1177 | if (cx->blk_loop.iterix >= cx->blk_oldsp) | |
1178 | RETPUSHNO; | |
1179 | ||
1180 | if (sv = AvARRAY(cx->blk_loop.iterary)[++cx->blk_loop.iterix]) { | |
1181 | SvTEMP_off(sv); | |
1182 | *cx->blk_loop.itervar = sv; | |
1183 | } | |
1184 | else | |
1185 | *cx->blk_loop.itervar = &sv_undef; | |
1186 | ||
1187 | RETPUSHYES; | |
1188 | } | |
1189 | ||
1190 | PP(pp_subst) | |
1191 | { | |
1192 | dSP; dTARG; | |
1193 | register PMOP *pm = cPMOP; | |
1194 | PMOP *rpm = pm; | |
1195 | register SV *dstr; | |
1196 | register char *s; | |
1197 | char *strend; | |
1198 | register char *m; | |
1199 | char *c; | |
1200 | register char *d; | |
1201 | STRLEN clen; | |
1202 | I32 iters = 0; | |
1203 | I32 maxiters; | |
1204 | register I32 i; | |
1205 | bool once; | |
1206 | char *orig; | |
1207 | I32 safebase; | |
1208 | register REGEXP *rx = pm->op_pmregexp; | |
1209 | STRLEN len; | |
1210 | int force_on_match = 0; | |
1211 | ||
1212 | if (pm->op_pmflags & PMf_CONST) /* known replacement string? */ | |
1213 | dstr = POPs; | |
1214 | if (op->op_flags & OPf_STACKED) | |
1215 | TARG = POPs; | |
1216 | else { | |
1217 | TARG = GvSV(defgv); | |
1218 | EXTEND(SP,1); | |
1219 | } | |
1220 | s = SvPV(TARG, len); | |
1221 | if (!SvPOKp(TARG)) | |
1222 | force_on_match = 1; | |
1223 | ||
1224 | force_it: | |
1225 | if (!pm || !s) | |
1226 | DIE("panic: do_subst"); | |
1227 | ||
1228 | strend = s + len; | |
1229 | maxiters = (strend - s) + 10; | |
1230 | ||
1231 | if (!rx->prelen && curpm) { | |
1232 | pm = curpm; | |
1233 | rx = pm->op_pmregexp; | |
1234 | } | |
1235 | safebase = ((!rx || !rx->nparens) && !sawampersand); | |
1236 | if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { | |
1237 | SAVEINT(multiline); | |
1238 | multiline = pm->op_pmflags & PMf_MULTILINE; | |
1239 | } | |
1240 | orig = m = s; | |
1241 | if (pm->op_pmshort) { | |
1242 | if (pm->op_pmflags & PMf_SCANFIRST) { | |
1243 | if (SvSCREAM(TARG)) { | |
1244 | if (screamfirst[BmRARE(pm->op_pmshort)] < 0) | |
1245 | goto nope; | |
1246 | else if (!(s = screaminstr(TARG, pm->op_pmshort))) | |
1247 | goto nope; | |
1248 | } | |
1249 | else if (!(s = fbm_instr((unsigned char*)s, (unsigned char*)strend, | |
1250 | pm->op_pmshort))) | |
1251 | goto nope; | |
1252 | if (s && rx->regback >= 0) { | |
1253 | ++BmUSEFUL(pm->op_pmshort); | |
1254 | s -= rx->regback; | |
1255 | if (s < m) | |
1256 | s = m; | |
1257 | } | |
1258 | else | |
1259 | s = m; | |
1260 | } | |
1261 | else if (!multiline) { | |
1262 | if (*SvPVX(pm->op_pmshort) != *s || | |
1263 | bcmp(SvPVX(pm->op_pmshort), s, pm->op_pmslen) ) { | |
1264 | if (pm->op_pmflags & PMf_FOLD) { | |
1265 | if (ibcmp((U8*)SvPVX(pm->op_pmshort), (U8*)s, pm->op_pmslen) ) | |
1266 | goto nope; | |
1267 | } | |
1268 | else | |
1269 | goto nope; | |
1270 | } | |
1271 | } | |
1272 | if (!rx->naughty && --BmUSEFUL(pm->op_pmshort) < 0) { | |
1273 | SvREFCNT_dec(pm->op_pmshort); | |
1274 | pm->op_pmshort = Nullsv; /* opt is being useless */ | |
1275 | } | |
1276 | } | |
1277 | once = !(rpm->op_pmflags & PMf_GLOBAL); | |
1278 | if (rpm->op_pmflags & PMf_CONST) { /* known replacement string? */ | |
1279 | c = SvPV(dstr, clen); | |
1280 | if (clen <= rx->minlen) { | |
1281 | /* can do inplace substitution */ | |
1282 | if (regexec(rx, s, strend, orig, 0, | |
1283 | SvSCREAM(TARG) ? TARG : Nullsv, safebase)) { | |
1284 | if (force_on_match) { | |
1285 | force_on_match = 0; | |
1286 | s = SvPV_force(TARG, len); | |
1287 | goto force_it; | |
1288 | } | |
1289 | if (rx->subbase) /* oops, no we can't */ | |
1290 | goto long_way; | |
1291 | d = s; | |
1292 | curpm = pm; | |
1293 | SvSCREAM_off(TARG); /* disable possible screamer */ | |
1294 | if (once) { | |
1295 | m = rx->startp[0]; | |
1296 | d = rx->endp[0]; | |
1297 | s = orig; | |
1298 | if (m - s > strend - d) { /* faster to shorten from end */ | |
1299 | if (clen) { | |
1300 | Copy(c, m, clen, char); | |
1301 | m += clen; | |
1302 | } | |
1303 | i = strend - d; | |
1304 | if (i > 0) { | |
1305 | Move(d, m, i, char); | |
1306 | m += i; | |
1307 | } | |
1308 | *m = '\0'; | |
1309 | SvCUR_set(TARG, m - s); | |
1310 | (void)SvPOK_only(TARG); | |
1311 | SvSETMAGIC(TARG); | |
1312 | PUSHs(&sv_yes); | |
1313 | RETURN; | |
1314 | } | |
1315 | /*SUPPRESS 560*/ | |
1316 | else if (i = m - s) { /* faster from front */ | |
1317 | d -= clen; | |
1318 | m = d; | |
1319 | sv_chop(TARG, d-i); | |
1320 | s += i; | |
1321 | while (i--) | |
1322 | *--d = *--s; | |
1323 | if (clen) | |
1324 | Copy(c, m, clen, char); | |
1325 | (void)SvPOK_only(TARG); | |
1326 | SvSETMAGIC(TARG); | |
1327 | PUSHs(&sv_yes); | |
1328 | RETURN; | |
1329 | } | |
1330 | else if (clen) { | |
1331 | d -= clen; | |
1332 | sv_chop(TARG, d); | |
1333 | Copy(c, d, clen, char); | |
1334 | (void)SvPOK_only(TARG); | |
1335 | SvSETMAGIC(TARG); | |
1336 | PUSHs(&sv_yes); | |
1337 | RETURN; | |
1338 | } | |
1339 | else { | |
1340 | sv_chop(TARG, d); | |
1341 | (void)SvPOK_only(TARG); | |
1342 | SvSETMAGIC(TARG); | |
1343 | PUSHs(&sv_yes); | |
1344 | RETURN; | |
1345 | } | |
1346 | /* NOTREACHED */ | |
1347 | } | |
1348 | do { | |
1349 | if (iters++ > maxiters) | |
1350 | DIE("Substitution loop"); | |
1351 | m = rx->startp[0]; | |
1352 | /*SUPPRESS 560*/ | |
1353 | if (i = m - s) { | |
1354 | if (s != d) | |
1355 | Move(s, d, i, char); | |
1356 | d += i; | |
1357 | } | |
1358 | if (clen) { | |
1359 | Copy(c, d, clen, char); | |
1360 | d += clen; | |
1361 | } | |
1362 | s = rx->endp[0]; | |
1363 | } while (regexec(rx, s, strend, orig, s == m, | |
1364 | Nullsv, TRUE)); /* (don't match same null twice) */ | |
1365 | if (s != d) { | |
1366 | i = strend - s; | |
1367 | SvCUR_set(TARG, d - SvPVX(TARG) + i); | |
1368 | Move(s, d, i+1, char); /* include the Null */ | |
1369 | } | |
1370 | (void)SvPOK_only(TARG); | |
1371 | SvSETMAGIC(TARG); | |
1372 | PUSHs(sv_2mortal(newSViv((I32)iters))); | |
1373 | RETURN; | |
1374 | } | |
1375 | PUSHs(&sv_no); | |
1376 | RETURN; | |
1377 | } | |
1378 | } | |
1379 | else | |
1380 | c = Nullch; | |
1381 | if (regexec(rx, s, strend, orig, 0, | |
1382 | SvSCREAM(TARG) ? TARG : Nullsv, safebase)) { | |
1383 | long_way: | |
1384 | if (force_on_match) { | |
1385 | force_on_match = 0; | |
1386 | s = SvPV_force(TARG, len); | |
1387 | goto force_it; | |
1388 | } | |
1389 | dstr = NEWSV(25, sv_len(TARG)); | |
1390 | sv_setpvn(dstr, m, s-m); | |
1391 | curpm = pm; | |
1392 | if (!c) { | |
1393 | register CONTEXT *cx; | |
1394 | PUSHSUBST(cx); | |
1395 | RETURNOP(cPMOP->op_pmreplroot); | |
1396 | } | |
1397 | do { | |
1398 | if (iters++ > maxiters) | |
1399 | DIE("Substitution loop"); | |
1400 | if (rx->subbase && rx->subbase != orig) { | |
1401 | m = s; | |
1402 | s = orig; | |
1403 | orig = rx->subbase; | |
1404 | s = orig + (m - s); | |
1405 | strend = s + (strend - m); | |
1406 | } | |
1407 | m = rx->startp[0]; | |
1408 | sv_catpvn(dstr, s, m-s); | |
1409 | s = rx->endp[0]; | |
1410 | if (clen) | |
1411 | sv_catpvn(dstr, c, clen); | |
1412 | if (once) | |
1413 | break; | |
1414 | } while (regexec(rx, s, strend, orig, s == m, Nullsv, | |
1415 | safebase)); | |
1416 | sv_catpvn(dstr, s, strend - s); | |
1417 | sv_replace(TARG, dstr); | |
1418 | (void)SvPOK_only(TARG); | |
1419 | SvSETMAGIC(TARG); | |
1420 | PUSHs(sv_2mortal(newSViv((I32)iters))); | |
1421 | RETURN; | |
1422 | } | |
1423 | PUSHs(&sv_no); | |
1424 | RETURN; | |
1425 | ||
1426 | nope: | |
1427 | ++BmUSEFUL(pm->op_pmshort); | |
1428 | PUSHs(&sv_no); | |
1429 | RETURN; | |
1430 | } | |
1431 | ||
1432 | PP(pp_grepwhile) | |
1433 | { | |
1434 | dSP; | |
1435 | ||
1436 | if (SvTRUEx(POPs)) | |
1437 | stack_base[markstack_ptr[-1]++] = stack_base[*markstack_ptr]; | |
1438 | ++*markstack_ptr; | |
1439 | LEAVE; /* exit inner scope */ | |
1440 | ||
1441 | /* All done yet? */ | |
1442 | if (stack_base + *markstack_ptr > sp) { | |
1443 | I32 items; | |
1444 | ||
1445 | LEAVE; /* exit outer scope */ | |
1446 | (void)POPMARK; /* pop src */ | |
1447 | items = --*markstack_ptr - markstack_ptr[-1]; | |
1448 | (void)POPMARK; /* pop dst */ | |
1449 | SP = stack_base + POPMARK; /* pop original mark */ | |
1450 | if (GIMME != G_ARRAY) { | |
1451 | dTARGET; | |
1452 | XPUSHi(items); | |
1453 | RETURN; | |
1454 | } | |
1455 | SP += items; | |
1456 | RETURN; | |
1457 | } | |
1458 | else { | |
1459 | SV *src; | |
1460 | ||
1461 | ENTER; /* enter inner scope */ | |
1462 | SAVESPTR(curpm); | |
1463 | ||
1464 | src = stack_base[*markstack_ptr]; | |
1465 | SvTEMP_off(src); | |
1466 | GvSV(defgv) = src; | |
1467 | ||
1468 | RETURNOP(cLOGOP->op_other); | |
1469 | } | |
1470 | } | |
1471 | ||
1472 | PP(pp_leavesub) | |
1473 | { | |
1474 | dSP; | |
1475 | SV **mark; | |
1476 | SV **newsp; | |
1477 | PMOP *newpm; | |
1478 | I32 gimme; | |
1479 | register CONTEXT *cx; | |
1480 | ||
1481 | POPBLOCK(cx,newpm); | |
1482 | POPSUB(cx); | |
1483 | ||
1484 | if (gimme == G_SCALAR) { | |
1485 | MARK = newsp + 1; | |
1486 | if (MARK <= SP) | |
1487 | if (SvFLAGS(TOPs) & SVs_TEMP) | |
1488 | *MARK = TOPs; | |
1489 | else | |
1490 | *MARK = sv_mortalcopy(TOPs); | |
1491 | else { | |
1492 | MEXTEND(mark,0); | |
1493 | *MARK = &sv_undef; | |
1494 | } | |
1495 | SP = MARK; | |
1496 | } | |
1497 | else { | |
1498 | for (mark = newsp + 1; mark <= SP; mark++) | |
1499 | if (!(SvFLAGS(*mark) & SVs_TEMP)) | |
1500 | *mark = sv_mortalcopy(*mark); | |
1501 | /* in case LEAVE wipes old return values */ | |
1502 | } | |
1503 | ||
1504 | if (cx->blk_sub.hasargs) { /* You don't exist; go away. */ | |
1505 | AV* av = cx->blk_sub.argarray; | |
1506 | ||
1507 | av_clear(av); | |
1508 | AvREAL_off(av); | |
1509 | } | |
1510 | curpm = newpm; /* Don't pop $1 et al till now */ | |
1511 | ||
1512 | LEAVE; | |
1513 | PUTBACK; | |
1514 | return pop_return(); | |
1515 | } | |
1516 | ||
1517 | PP(pp_entersub) | |
1518 | { | |
1519 | dSP; dPOPss; | |
1520 | GV *gv; | |
1521 | HV *stash; | |
1522 | register CV *cv; | |
1523 | register CONTEXT *cx; | |
1524 | ||
1525 | if (!sv) | |
1526 | DIE("Not a CODE reference"); | |
1527 | switch (SvTYPE(sv)) { | |
1528 | default: | |
1529 | if (!SvROK(sv)) { | |
1530 | if (sv == &sv_yes) /* unfound import, ignore */ | |
1531 | RETURN; | |
1532 | if (!SvOK(sv)) | |
1533 | DIE(no_usym, "a subroutine"); | |
1534 | if (op->op_private & HINT_STRICT_REFS) | |
1535 | DIE(no_symref, "a subroutine"); | |
1536 | gv = gv_fetchpv(SvPV(sv, na), FALSE, SVt_PVCV); | |
1537 | if (!gv) | |
1538 | cv = 0; | |
1539 | else | |
1540 | cv = GvCV(gv); | |
1541 | break; | |
1542 | } | |
1543 | cv = (CV*)SvRV(sv); | |
1544 | if (SvTYPE(cv) == SVt_PVCV) | |
1545 | break; | |
1546 | /* FALL THROUGH */ | |
1547 | case SVt_PVHV: | |
1548 | case SVt_PVAV: | |
1549 | DIE("Not a CODE reference"); | |
1550 | case SVt_PVCV: | |
1551 | cv = (CV*)sv; | |
1552 | break; | |
1553 | case SVt_PVGV: | |
1554 | if (!(cv = GvCV((GV*)sv))) | |
1555 | cv = sv_2cv(sv, &stash, &gv, TRUE); | |
1556 | break; | |
1557 | } | |
1558 | ||
1559 | ENTER; | |
1560 | SAVETMPS; | |
1561 | ||
1562 | retry: | |
1563 | if (!cv) | |
1564 | DIE("Not a CODE reference"); | |
1565 | ||
1566 | if (!CvROOT(cv) && !CvXSUB(cv)) { | |
1567 | if (gv = CvGV(cv)) { | |
1568 | SV *tmpstr = sv_newmortal(); | |
1569 | GV *ngv; | |
1570 | gv_efullname(tmpstr, gv); | |
1571 | ngv = gv_fetchmethod(GvESTASH(gv), "AUTOLOAD"); | |
1572 | if (ngv && ngv != gv && (cv = GvCV(ngv))) { /* One more chance... */ | |
1573 | gv = ngv; | |
1574 | sv_setsv(GvSV(CvGV(cv)), tmpstr); /* Set CV's $AUTOLOAD */ | |
1575 | goto retry; | |
1576 | } | |
1577 | else | |
1578 | DIE("Undefined subroutine &%s called",SvPVX(tmpstr)); | |
1579 | } | |
1580 | DIE("Undefined subroutine called"); | |
1581 | } | |
1582 | ||
1583 | if ((op->op_private & OPpDEREF_DB) && !CvXSUB(cv)) { | |
1584 | sv = GvSV(DBsub); | |
1585 | save_item(sv); | |
1586 | gv = CvGV(cv); | |
1587 | gv_efullname(sv,gv); | |
1588 | cv = GvCV(DBsub); | |
1589 | if (!cv) | |
1590 | DIE("No DBsub routine"); | |
1591 | } | |
1592 | ||
1593 | if (CvXSUB(cv)) { | |
1594 | if (CvOLDSTYLE(cv)) { | |
ecfc5424 | 1595 | I32 (*fp3)_((int,int,int)); |
a0d0e21e LW |
1596 | dMARK; |
1597 | register I32 items = SP - MARK; | |
1598 | while (sp > mark) { | |
1599 | sp[1] = sp[0]; | |
1600 | sp--; | |
1601 | } | |
1602 | stack_sp = mark + 1; | |
ecfc5424 AD |
1603 | fp3 = (I32(*)_((int,int,int)))CvXSUB(cv); |
1604 | items = (*fp3)(CvXSUBANY(cv).any_i32, | |
1605 | MARK - stack_base + 1, | |
1606 | items); | |
a0d0e21e LW |
1607 | stack_sp = stack_base + items; |
1608 | } | |
1609 | else { | |
1610 | PUTBACK; | |
1611 | (void)(*CvXSUB(cv))(cv); | |
1612 | } | |
1613 | LEAVE; | |
1614 | return NORMAL; | |
1615 | } | |
1616 | else { | |
1617 | dMARK; | |
1618 | register I32 items = SP - MARK; | |
1619 | I32 hasargs = (op->op_flags & OPf_STACKED) != 0; | |
1620 | I32 gimme = GIMME; | |
1621 | AV* padlist = CvPADLIST(cv); | |
1622 | SV** svp = AvARRAY(padlist); | |
1623 | push_return(op->op_next); | |
1624 | PUSHBLOCK(cx, CXt_SUB, MARK); | |
1625 | PUSHSUB(cx); | |
1626 | CvDEPTH(cv)++; | |
1627 | if (CvDEPTH(cv) < 2) | |
1628 | (void)SvREFCNT_inc(cv); | |
1629 | else { /* save temporaries on recursion? */ | |
1630 | if (CvDEPTH(cv) == 100 && dowarn) | |
1631 | warn("Deep recursion on subroutine \"%s\"",GvENAME(CvGV(cv))); | |
1632 | if (CvDEPTH(cv) > AvFILL(padlist)) { | |
1633 | AV *av; | |
1634 | AV *newpad = newAV(); | |
1635 | I32 ix = AvFILL((AV*)svp[1]); | |
1636 | svp = AvARRAY(svp[0]); | |
1637 | while (ix > 0) { | |
1638 | if (svp[ix] != &sv_undef) { | |
1639 | char *name = SvPVX(svp[ix]); /* XXX */ | |
1640 | if (*name == '@') | |
1641 | av_store(newpad, ix--, sv = (SV*)newAV()); | |
1642 | else if (*name == '%') | |
1643 | av_store(newpad, ix--, sv = (SV*)newHV()); | |
1644 | else | |
1645 | av_store(newpad, ix--, sv = NEWSV(0,0)); | |
1646 | SvPADMY_on(sv); | |
1647 | } | |
1648 | else { | |
1649 | av_store(newpad, ix--, sv = NEWSV(0,0)); | |
1650 | SvPADTMP_on(sv); | |
1651 | } | |
1652 | } | |
1653 | av = newAV(); /* will be @_ */ | |
1654 | av_extend(av, 0); | |
1655 | av_store(newpad, 0, (SV*)av); | |
1656 | AvFLAGS(av) = AVf_REIFY; | |
1657 | av_store(padlist, CvDEPTH(cv), (SV*)newpad); | |
1658 | AvFILL(padlist) = CvDEPTH(cv); | |
1659 | svp = AvARRAY(padlist); | |
1660 | } | |
1661 | } | |
1662 | SAVESPTR(curpad); | |
1663 | curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]); | |
1664 | if (hasargs) { | |
1665 | AV* av = (AV*)curpad[0]; | |
1666 | SV** ary; | |
1667 | ||
1668 | if (AvREAL(av)) { | |
1669 | av_clear(av); | |
1670 | AvREAL_off(av); | |
1671 | } | |
1672 | cx->blk_sub.savearray = GvAV(defgv); | |
1673 | cx->blk_sub.argarray = av; | |
1674 | GvAV(defgv) = cx->blk_sub.argarray; | |
1675 | ++MARK; | |
1676 | ||
1677 | if (items > AvMAX(av) + 1) { | |
1678 | ary = AvALLOC(av); | |
1679 | if (AvARRAY(av) != ary) { | |
1680 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); | |
1681 | SvPVX(av) = (char*)ary; | |
1682 | } | |
1683 | if (items > AvMAX(av) + 1) { | |
1684 | AvMAX(av) = items - 1; | |
1685 | Renew(ary,items,SV*); | |
1686 | AvALLOC(av) = ary; | |
1687 | SvPVX(av) = (char*)ary; | |
1688 | } | |
1689 | } | |
1690 | Copy(MARK,AvARRAY(av),items,SV*); | |
1691 | AvFILL(av) = items - 1; | |
1692 | ||
1693 | while (items--) { | |
1694 | if (*MARK) | |
1695 | SvTEMP_off(*MARK); | |
1696 | MARK++; | |
1697 | } | |
1698 | } | |
1699 | RETURNOP(CvSTART(cv)); | |
1700 | } | |
1701 | } | |
1702 | ||
1703 | PP(pp_aelem) | |
1704 | { | |
1705 | dSP; | |
1706 | SV** svp; | |
1707 | I32 elem = POPi - curcop->cop_arybase; | |
1708 | AV *av = (AV*)POPs; | |
1709 | I32 lval = op->op_flags & OPf_MOD; | |
1710 | ||
1711 | if (SvTYPE(av) != SVt_PVAV) | |
1712 | RETPUSHUNDEF; | |
1713 | svp = av_fetch(av, elem, lval); | |
1714 | if (lval) { | |
1715 | if (!svp || *svp == &sv_undef) | |
1716 | DIE(no_aelem, elem); | |
1717 | if (op->op_private & OPpLVAL_INTRO) | |
1718 | save_svref(svp); | |
1719 | else if (op->op_private & (OPpDEREF_HV|OPpDEREF_AV)) { | |
1720 | SV* sv = *svp; | |
1721 | if (SvGMAGICAL(sv)) | |
1722 | mg_get(sv); | |
1723 | if (!SvOK(sv)) { | |
1724 | (void)SvUPGRADE(sv, SVt_RV); | |
1725 | SvRV(sv) = (op->op_private & OPpDEREF_HV ? | |
1726 | (SV*)newHV() : (SV*)newAV()); | |
1727 | SvROK_on(sv); | |
1728 | SvSETMAGIC(sv); | |
1729 | } | |
1730 | } | |
1731 | } | |
1732 | PUSHs(svp ? *svp : &sv_undef); | |
1733 | RETURN; | |
1734 | } | |
1735 | ||
1736 | PP(pp_method) | |
1737 | { | |
1738 | dSP; | |
1739 | SV* sv; | |
1740 | SV* ob; | |
1741 | GV* gv; | |
1742 | SV* nm; | |
1743 | ||
1744 | nm = TOPs; | |
1745 | sv = *(stack_base + TOPMARK + 1); | |
1746 | ||
1747 | gv = 0; | |
1748 | if (SvROK(sv)) | |
1749 | ob = SvRV(sv); | |
1750 | else { | |
1751 | GV* iogv; | |
1752 | char* packname = 0; | |
1753 | ||
1754 | if (!SvOK(sv) || | |
1755 | !(packname = SvPV(sv, na)) || | |
1756 | !(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) || | |
1757 | !(ob=(SV*)GvIO(iogv))) | |
1758 | { | |
1759 | char *name = SvPV(nm, na); | |
1760 | HV *stash; | |
1761 | if (!packname || !isALPHA(*packname)) | |
1762 | DIE("Can't call method \"%s\" without a package or object reference", name); | |
1763 | if (!(stash = gv_stashpv(packname, FALSE))) { | |
1764 | if (gv_stashpv("UNIVERSAL", FALSE)) | |
1765 | stash = gv_stashpv(packname, TRUE); | |
1766 | else | |
1767 | DIE("Can't call method \"%s\" in empty package \"%s\"", | |
1768 | name, packname); | |
1769 | } | |
1770 | gv = gv_fetchmethod(stash,name); | |
1771 | if (!gv) | |
1772 | DIE("Can't locate object method \"%s\" via package \"%s\"", | |
1773 | name, packname); | |
1774 | SETs(gv); | |
1775 | RETURN; | |
1776 | } | |
1777 | } | |
1778 | ||
1779 | if (!ob || !SvOBJECT(ob)) { | |
1780 | char *name = SvPV(nm, na); | |
1781 | DIE("Can't call method \"%s\" on unblessed reference", name); | |
1782 | } | |
1783 | ||
1784 | if (!gv) { /* nothing cached */ | |
1785 | char *name = SvPV(nm, na); | |
1786 | gv = gv_fetchmethod(SvSTASH(ob),name); | |
1787 | if (!gv) | |
1788 | DIE("Can't locate object method \"%s\" via package \"%s\"", | |
1789 | name, HvNAME(SvSTASH(ob))); | |
1790 | } | |
1791 | ||
1792 | SETs(gv); | |
1793 | RETURN; | |
1794 | } | |
1795 |