Commit | Line | Data |
a0d0e21e |
1 | /* doop.c |
79072805 |
2 | * |
9607fc9c |
3 | * Copyright (c) 1991-1997, Larry Wall |
79072805 |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. |
7 | * |
a0d0e21e |
8 | */ |
9 | |
10 | /* |
11 | * "'So that was the job I felt I had to do when I started,' thought Sam." |
79072805 |
12 | */ |
13 | |
14 | #include "EXTERN.h" |
15 | #include "perl.h" |
16 | |
17 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
18 | #include <signal.h> |
19 | #endif |
20 | |
79072805 |
21 | I32 |
22 | do_trans(sv,arg) |
23 | SV *sv; |
24 | OP *arg; |
25 | { |
11343788 |
26 | dTHR; |
79072805 |
27 | register short *tbl; |
1476d272 |
28 | register U8 *s; |
29 | register U8 *send; |
30 | register U8 *d; |
79072805 |
31 | register I32 ch; |
1476d272 |
32 | register I32 matches = 0; |
79072805 |
33 | register I32 squash = op->op_private & OPpTRANS_SQUASH; |
463ee0b2 |
34 | STRLEN len; |
79072805 |
35 | |
a0d0e21e |
36 | if (SvREADONLY(sv)) |
37 | croak(no_modify); |
1476d272 |
38 | tbl = (short*)cPVOP->op_pv; |
39 | s = (U8*)SvPV(sv, len); |
a0d0e21e |
40 | if (!len) |
41 | return 0; |
42 | if (!SvPOKp(sv)) |
1476d272 |
43 | s = (U8*)SvPV_force(sv, len); |
a0d0e21e |
44 | (void)SvPOK_only(sv); |
463ee0b2 |
45 | send = s + len; |
79072805 |
46 | if (!tbl || !s) |
463ee0b2 |
47 | croak("panic: do_trans"); |
79072805 |
48 | DEBUG_t( deb("2.TBL\n")); |
49 | if (!op->op_private) { |
50 | while (s < send) { |
1476d272 |
51 | if ((ch = tbl[*s]) >= 0) { |
79072805 |
52 | matches++; |
53 | *s = ch; |
54 | } |
55 | s++; |
56 | } |
57 | } |
58 | else { |
59 | d = s; |
60 | while (s < send) { |
1476d272 |
61 | if ((ch = tbl[*s]) >= 0) { |
79072805 |
62 | *d = ch; |
63 | if (matches++ && squash) { |
64 | if (d[-1] == *d) |
65 | matches--; |
66 | else |
67 | d++; |
68 | } |
69 | else |
70 | d++; |
71 | } |
72 | else if (ch == -1) /* -1 is unmapped character */ |
73 | *d++ = *s; /* -2 is delete character */ |
74 | s++; |
75 | } |
76 | matches += send - d; /* account for disappeared chars */ |
77 | *d = '\0'; |
1476d272 |
78 | SvCUR_set(sv, d - (U8*)SvPVX(sv)); |
79072805 |
79 | } |
80 | SvSETMAGIC(sv); |
81 | return matches; |
82 | } |
83 | |
84 | void |
85 | do_join(sv,del,mark,sp) |
86 | register SV *sv; |
87 | SV *del; |
88 | register SV **mark; |
89 | register SV **sp; |
90 | { |
91 | SV **oldmark = mark; |
92 | register I32 items = sp - mark; |
79072805 |
93 | register STRLEN len; |
463ee0b2 |
94 | STRLEN delimlen; |
95 | register char *delim = SvPV(del, delimlen); |
96 | STRLEN tmplen; |
79072805 |
97 | |
98 | mark++; |
99 | len = (items > 0 ? (delimlen * (items - 1) ) : 0); |
100 | if (SvTYPE(sv) < SVt_PV) |
101 | sv_upgrade(sv, SVt_PV); |
102 | if (SvLEN(sv) < len + items) { /* current length is way too short */ |
103 | while (items-- > 0) { |
104 | if (*mark) { |
463ee0b2 |
105 | SvPV(*mark, tmplen); |
106 | len += tmplen; |
79072805 |
107 | } |
108 | mark++; |
109 | } |
110 | SvGROW(sv, len + 1); /* so try to pre-extend */ |
111 | |
112 | mark = oldmark; |
113 | items = sp - mark;; |
114 | ++mark; |
115 | } |
116 | |
463ee0b2 |
117 | if (items-- > 0) { |
8990e307 |
118 | char *s; |
119 | |
120 | if (*mark) { |
121 | s = SvPV(*mark, tmplen); |
122 | sv_setpvn(sv, s, tmplen); |
123 | } |
124 | else |
125 | sv_setpv(sv, ""); |
463ee0b2 |
126 | mark++; |
127 | } |
79072805 |
128 | else |
129 | sv_setpv(sv,""); |
130 | len = delimlen; |
131 | if (len) { |
132 | for (; items > 0; items--,mark++) { |
133 | sv_catpvn(sv,delim,len); |
134 | sv_catsv(sv,*mark); |
135 | } |
136 | } |
137 | else { |
138 | for (; items > 0; items--,mark++) |
139 | sv_catsv(sv,*mark); |
140 | } |
141 | SvSETMAGIC(sv); |
142 | } |
143 | |
144 | void |
145 | do_sprintf(sv,len,sarg) |
46fc3d4c |
146 | SV *sv; |
147 | I32 len; |
148 | SV **sarg; |
79072805 |
149 | { |
46fc3d4c |
150 | STRLEN patlen; |
151 | char *pat = SvPV(*sarg, patlen); |
152 | bool do_taint = FALSE; |
153 | |
154 | sv_vsetpvfn(sv, pat, patlen, Null(va_list*), sarg + 1, len - 1, &do_taint); |
79072805 |
155 | SvSETMAGIC(sv); |
46fc3d4c |
156 | if (do_taint) |
157 | SvTAINTED_on(sv); |
79072805 |
158 | } |
159 | |
160 | void |
161 | do_vecset(sv) |
162 | SV *sv; |
163 | { |
164 | SV *targ = LvTARG(sv); |
165 | register I32 offset; |
166 | register I32 size; |
8990e307 |
167 | register unsigned char *s; |
168 | register unsigned long lval; |
79072805 |
169 | I32 mask; |
a0d0e21e |
170 | STRLEN targlen; |
171 | STRLEN len; |
79072805 |
172 | |
8990e307 |
173 | if (!targ) |
174 | return; |
a0d0e21e |
175 | s = (unsigned char*)SvPV_force(targ, targlen); |
8990e307 |
176 | lval = U_L(SvNV(sv)); |
79072805 |
177 | offset = LvTARGOFF(sv); |
178 | size = LvTARGLEN(sv); |
a0d0e21e |
179 | |
180 | len = (offset + size + 7) / 8; |
181 | if (len > targlen) { |
182 | s = (unsigned char*)SvGROW(targ, len + 1); |
183 | (void)memzero(s + targlen, len - targlen + 1); |
184 | SvCUR_set(targ, len); |
185 | } |
186 | |
79072805 |
187 | if (size < 8) { |
188 | mask = (1 << size) - 1; |
189 | size = offset & 7; |
190 | lval &= mask; |
191 | offset >>= 3; |
192 | s[offset] &= ~(mask << size); |
193 | s[offset] |= lval << size; |
194 | } |
195 | else { |
a0d0e21e |
196 | offset >>= 3; |
79072805 |
197 | if (size == 8) |
198 | s[offset] = lval & 255; |
199 | else if (size == 16) { |
200 | s[offset] = (lval >> 8) & 255; |
201 | s[offset+1] = lval & 255; |
202 | } |
203 | else if (size == 32) { |
204 | s[offset] = (lval >> 24) & 255; |
205 | s[offset+1] = (lval >> 16) & 255; |
206 | s[offset+2] = (lval >> 8) & 255; |
207 | s[offset+3] = lval & 255; |
208 | } |
209 | } |
210 | } |
211 | |
212 | void |
213 | do_chop(astr,sv) |
214 | register SV *astr; |
215 | register SV *sv; |
216 | { |
463ee0b2 |
217 | STRLEN len; |
a0d0e21e |
218 | char *s; |
219 | |
79072805 |
220 | if (SvTYPE(sv) == SVt_PVAV) { |
a0d0e21e |
221 | register I32 i; |
222 | I32 max; |
223 | AV* av = (AV*)sv; |
224 | max = AvFILL(av); |
225 | for (i = 0; i <= max; i++) { |
226 | sv = (SV*)av_fetch(av, i, FALSE); |
227 | if (sv && ((sv = *(SV**)sv), sv != &sv_undef)) |
228 | do_chop(astr, sv); |
229 | } |
230 | return; |
79072805 |
231 | } |
232 | if (SvTYPE(sv) == SVt_PVHV) { |
a0d0e21e |
233 | HV* hv = (HV*)sv; |
234 | HE* entry; |
235 | (void)hv_iterinit(hv); |
236 | /*SUPPRESS 560*/ |
237 | while (entry = hv_iternext(hv)) |
238 | do_chop(astr,hv_iterval(hv,entry)); |
239 | return; |
79072805 |
240 | } |
a0d0e21e |
241 | s = SvPV(sv, len); |
748a9306 |
242 | if (len && !SvPOK(sv)) |
a0d0e21e |
243 | s = SvPV_force(sv, len); |
244 | if (s && len) { |
245 | s += --len; |
246 | sv_setpvn(astr, s, 1); |
247 | *s = '\0'; |
248 | SvCUR_set(sv, len); |
249 | SvNIOK_off(sv); |
79072805 |
250 | } |
251 | else |
a0d0e21e |
252 | sv_setpvn(astr, "", 0); |
253 | SvSETMAGIC(sv); |
254 | } |
255 | |
256 | I32 |
257 | do_chomp(sv) |
258 | register SV *sv; |
259 | { |
c07a80fd |
260 | register I32 count; |
a0d0e21e |
261 | STRLEN len; |
262 | char *s; |
c07a80fd |
263 | |
264 | if (RsSNARF(rs)) |
265 | return 0; |
266 | count = 0; |
a0d0e21e |
267 | if (SvTYPE(sv) == SVt_PVAV) { |
268 | register I32 i; |
269 | I32 max; |
270 | AV* av = (AV*)sv; |
271 | max = AvFILL(av); |
272 | for (i = 0; i <= max; i++) { |
273 | sv = (SV*)av_fetch(av, i, FALSE); |
274 | if (sv && ((sv = *(SV**)sv), sv != &sv_undef)) |
275 | count += do_chomp(sv); |
276 | } |
277 | return count; |
278 | } |
279 | if (SvTYPE(sv) == SVt_PVHV) { |
280 | HV* hv = (HV*)sv; |
281 | HE* entry; |
282 | (void)hv_iterinit(hv); |
283 | /*SUPPRESS 560*/ |
284 | while (entry = hv_iternext(hv)) |
285 | count += do_chomp(hv_iterval(hv,entry)); |
286 | return count; |
287 | } |
288 | s = SvPV(sv, len); |
289 | if (len && !SvPOKp(sv)) |
290 | s = SvPV_force(sv, len); |
291 | if (s && len) { |
292 | s += --len; |
c07a80fd |
293 | if (RsPARA(rs)) { |
a0d0e21e |
294 | if (*s != '\n') |
295 | goto nope; |
296 | ++count; |
297 | while (len && s[-1] == '\n') { |
298 | --len; |
299 | --s; |
300 | ++count; |
301 | } |
302 | } |
a0d0e21e |
303 | else { |
c07a80fd |
304 | STRLEN rslen; |
305 | char *rsptr = SvPV(rs, rslen); |
306 | if (rslen == 1) { |
307 | if (*s != *rsptr) |
308 | goto nope; |
309 | ++count; |
310 | } |
311 | else { |
8c2cee6f |
312 | if (len < rslen - 1) |
c07a80fd |
313 | goto nope; |
314 | len -= rslen - 1; |
315 | s -= rslen - 1; |
36477c24 |
316 | if (memNE(s, rsptr, rslen)) |
c07a80fd |
317 | goto nope; |
318 | count += rslen; |
319 | } |
a0d0e21e |
320 | } |
a0d0e21e |
321 | *s = '\0'; |
322 | SvCUR_set(sv, len); |
323 | SvNIOK_off(sv); |
324 | } |
325 | nope: |
326 | SvSETMAGIC(sv); |
327 | return count; |
328 | } |
79072805 |
329 | |
330 | void |
331 | do_vop(optype,sv,left,right) |
332 | I32 optype; |
333 | SV *sv; |
334 | SV *left; |
335 | SV *right; |
336 | { |
337 | #ifdef LIBERAL |
338 | register long *dl; |
339 | register long *ll; |
340 | register long *rl; |
341 | #endif |
342 | register char *dc; |
463ee0b2 |
343 | STRLEN leftlen; |
344 | STRLEN rightlen; |
7a4c00b4 |
345 | register char *lc; |
346 | register char *rc; |
79072805 |
347 | register I32 len; |
a0d0e21e |
348 | I32 lensave; |
7a4c00b4 |
349 | char *lsave; |
350 | char *rsave; |
79072805 |
351 | |
1fbd88dc |
352 | if (sv != left || (optype != OP_BIT_AND && !SvOK(sv) && !SvGMAGICAL(sv))) |
353 | sv_setpvn(sv, "", 0); /* avoid undef warning on |= and ^= */ |
7a4c00b4 |
354 | lsave = lc = SvPV(left, leftlen); |
355 | rsave = rc = SvPV(right, rightlen); |
93a17b20 |
356 | len = leftlen < rightlen ? leftlen : rightlen; |
a0d0e21e |
357 | lensave = len; |
7a4c00b4 |
358 | if (SvOK(sv) || SvTYPE(sv) > SVt_PVMG) { |
ff68c719 |
359 | dc = SvPV_force(sv, na); |
360 | if (SvCUR(sv) < len) { |
361 | dc = SvGROW(sv, len + 1); |
362 | (void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1); |
363 | } |
364 | } |
365 | else { |
366 | I32 needlen = ((optype == OP_BIT_AND) |
367 | ? len : (leftlen > rightlen ? leftlen : rightlen)); |
368 | Newz(801, dc, needlen + 1, char); |
369 | (void)sv_usepvn(sv, dc, needlen); |
370 | dc = SvPVX(sv); /* sv_usepvn() calls Renew() */ |
79072805 |
371 | } |
a0d0e21e |
372 | SvCUR_set(sv, len); |
373 | (void)SvPOK_only(sv); |
79072805 |
374 | #ifdef LIBERAL |
375 | if (len >= sizeof(long)*4 && |
376 | !((long)dc % sizeof(long)) && |
377 | !((long)lc % sizeof(long)) && |
378 | !((long)rc % sizeof(long))) /* It's almost always aligned... */ |
379 | { |
380 | I32 remainder = len % (sizeof(long)*4); |
381 | len /= (sizeof(long)*4); |
382 | |
383 | dl = (long*)dc; |
384 | ll = (long*)lc; |
385 | rl = (long*)rc; |
386 | |
387 | switch (optype) { |
388 | case OP_BIT_AND: |
389 | while (len--) { |
390 | *dl++ = *ll++ & *rl++; |
391 | *dl++ = *ll++ & *rl++; |
392 | *dl++ = *ll++ & *rl++; |
393 | *dl++ = *ll++ & *rl++; |
394 | } |
395 | break; |
a0d0e21e |
396 | case OP_BIT_XOR: |
79072805 |
397 | while (len--) { |
398 | *dl++ = *ll++ ^ *rl++; |
399 | *dl++ = *ll++ ^ *rl++; |
400 | *dl++ = *ll++ ^ *rl++; |
401 | *dl++ = *ll++ ^ *rl++; |
402 | } |
403 | break; |
404 | case OP_BIT_OR: |
405 | while (len--) { |
406 | *dl++ = *ll++ | *rl++; |
407 | *dl++ = *ll++ | *rl++; |
408 | *dl++ = *ll++ | *rl++; |
409 | *dl++ = *ll++ | *rl++; |
410 | } |
411 | } |
412 | |
413 | dc = (char*)dl; |
414 | lc = (char*)ll; |
415 | rc = (char*)rl; |
416 | |
417 | len = remainder; |
418 | } |
419 | #endif |
a0d0e21e |
420 | { |
a0d0e21e |
421 | switch (optype) { |
422 | case OP_BIT_AND: |
423 | while (len--) |
424 | *dc++ = *lc++ & *rc++; |
425 | break; |
426 | case OP_BIT_XOR: |
427 | while (len--) |
428 | *dc++ = *lc++ ^ *rc++; |
429 | goto mop_up; |
430 | case OP_BIT_OR: |
431 | while (len--) |
432 | *dc++ = *lc++ | *rc++; |
433 | mop_up: |
434 | len = lensave; |
435 | if (rightlen > len) |
436 | sv_catpvn(sv, rsave + len, rightlen - len); |
437 | else if (leftlen > len) |
438 | sv_catpvn(sv, lsave + len, leftlen - len); |
4633a7c4 |
439 | else |
440 | *SvEND(sv) = '\0'; |
a0d0e21e |
441 | break; |
442 | } |
79072805 |
443 | } |
444 | } |
463ee0b2 |
445 | |
446 | OP * |
447 | do_kv(ARGS) |
448 | dARGS |
449 | { |
450 | dSP; |
451 | HV *hv = (HV*)POPs; |
463ee0b2 |
452 | register HE *entry; |
463ee0b2 |
453 | SV *tmpstr; |
54310121 |
454 | I32 gimme = GIMME_V; |
a0d0e21e |
455 | I32 dokeys = (op->op_type == OP_KEYS); |
456 | I32 dovalues = (op->op_type == OP_VALUES); |
c750a3ec |
457 | I32 realhv = (SvTYPE(hv) == SVt_PVHV); |
458 | |
a0d0e21e |
459 | if (op->op_type == OP_RV2HV || op->op_type == OP_PADHV) |
460 | dokeys = dovalues = TRUE; |
463ee0b2 |
461 | |
85581909 |
462 | if (!hv) { |
463 | if (op->op_flags & OPf_MOD) { /* lvalue */ |
464 | dTARGET; /* make sure to clear its target here */ |
465 | if (SvTYPE(TARG) == SVt_PVLV) |
466 | LvTARG(TARG) = Nullsv; |
467 | PUSHs(TARG); |
468 | } |
463ee0b2 |
469 | RETURN; |
85581909 |
470 | } |
748a9306 |
471 | |
c750a3ec |
472 | if (realhv) |
473 | (void)hv_iterinit(hv); /* always reset iterator regardless */ |
474 | else |
475 | (void)avhv_iterinit((AV*)hv); |
748a9306 |
476 | |
54310121 |
477 | if (gimme == G_VOID) |
aa689395 |
478 | RETURN; |
479 | |
54310121 |
480 | if (gimme == G_SCALAR) { |
8c2cee6f |
481 | I32 i; |
463ee0b2 |
482 | dTARGET; |
483 | |
85581909 |
484 | if (op->op_flags & OPf_MOD) { /* lvalue */ |
485 | if (SvTYPE(TARG) < SVt_PVLV) { |
486 | sv_upgrade(TARG, SVt_PVLV); |
487 | sv_magic(TARG, Nullsv, 'k', Nullch, 0); |
488 | } |
489 | LvTYPE(TARG) = 'k'; |
490 | LvTARG(TARG) = (SV*)hv; |
491 | PUSHs(TARG); |
492 | RETURN; |
493 | } |
494 | |
8990e307 |
495 | if (!SvRMAGICAL(hv) || !mg_find((SV*)hv,'P')) |
463ee0b2 |
496 | i = HvKEYS(hv); |
497 | else { |
498 | i = 0; |
463ee0b2 |
499 | /*SUPPRESS 560*/ |
c750a3ec |
500 | while (entry = realhv ? hv_iternext(hv) : avhv_iternext((AV*)hv)) { |
463ee0b2 |
501 | i++; |
502 | } |
503 | } |
504 | PUSHi( i ); |
505 | RETURN; |
506 | } |
507 | |
508 | /* Guess how much room we need. hv_max may be a few too many. Oh well. */ |
509 | EXTEND(sp, HvMAX(hv) * (dokeys + dovalues)); |
510 | |
463ee0b2 |
511 | PUTBACK; /* hv_iternext and hv_iterval might clobber stack_sp */ |
c750a3ec |
512 | while (entry = realhv ? hv_iternext(hv) : avhv_iternext((AV*)hv)) { |
463ee0b2 |
513 | SPAGAIN; |
8c2cee6f |
514 | if (dokeys) |
515 | XPUSHs(hv_iterkeysv(entry)); /* won't clobber stack_sp */ |
463ee0b2 |
516 | if (dovalues) { |
46fc3d4c |
517 | tmpstr = sv_newmortal(); |
463ee0b2 |
518 | PUTBACK; |
c750a3ec |
519 | sv_setsv(tmpstr,realhv ? |
520 | hv_iterval(hv,entry) : avhv_iterval((AV*)hv,entry)); |
46fc3d4c |
521 | DEBUG_H(sv_setpvf(tmpstr, "%lu%%%d=%lu", |
522 | (unsigned long)HeHASH(entry), |
523 | HvMAX(hv)+1, |
524 | (unsigned long)(HeHASH(entry) & HvMAX(hv)))); |
463ee0b2 |
525 | SPAGAIN; |
46fc3d4c |
526 | XPUSHs(tmpstr); |
463ee0b2 |
527 | } |
528 | PUTBACK; |
529 | } |
530 | return NORMAL; |
531 | } |