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