3 * Copyright (c) 1991-1997, Larry Wall
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.
11 * "'So that was the job I felt I had to do when I started,' thought Sam."
17 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
22 do_trans(SV *sv, OP *arg)
30 register I32 matches = 0;
31 register I32 squash = op->op_private & OPpTRANS_SQUASH;
35 if (SvREADONLY(sv) && !(op->op_private & OPpTRANS_COUNTONLY))
37 tbl = (short*)cPVOP->op_pv;
38 s = (U8*)SvPV(sv, len);
42 s = (U8*)SvPV_force(sv, len);
46 croak("panic: do_trans");
47 DEBUG_t( deb("2.TBL\n"));
48 if (!op->op_private) {
50 if ((ch = tbl[*s]) >= 0) {
58 else if (op->op_private & OPpTRANS_COUNTONLY) {
69 if ((ch = tbl[*s]) >= 0) {
73 if (p == d - 1 && *p == *d)
81 else if (ch == -1) /* -1 is unmapped character */
82 *d++ = *s; /* -2 is delete character */
85 matches += send - d; /* account for disappeared chars */
87 SvCUR_set(sv, d - (U8*)SvPVX(sv));
94 do_join(register SV *sv, SV *del, register SV **mark, register SV **sp)
97 register I32 items = sp - mark;
100 register char *delim = SvPV(del, delimlen);
104 len = (items > 0 ? (delimlen * (items - 1) ) : 0);
105 if (SvTYPE(sv) < SVt_PV)
106 sv_upgrade(sv, SVt_PV);
107 if (SvLEN(sv) < len + items) { /* current length is way too short */
108 while (items-- > 0) {
109 if (*mark && !SvGMAGICAL(*mark) && SvOK(*mark)) {
115 SvGROW(sv, len + 1); /* so try to pre-extend */
126 s = SvPV(*mark, tmplen);
127 sv_setpvn(sv, s, tmplen);
137 for (; items > 0; items--,mark++) {
138 sv_catpvn(sv,delim,len);
143 for (; items > 0; items--,mark++)
150 do_sprintf(SV *sv, I32 len, SV **sarg)
153 char *pat = SvPV(*sarg, patlen);
154 bool do_taint = FALSE;
156 sv_vsetpvfn(sv, pat, patlen, Null(va_list*), sarg + 1, len - 1, &do_taint);
165 SV *targ = LvTARG(sv);
168 register unsigned char *s;
169 register unsigned long lval;
176 s = (unsigned char*)SvPV_force(targ, targlen);
177 lval = U_L(SvNV(sv));
178 offset = LvTARGOFF(sv);
179 size = LvTARGLEN(sv);
181 len = (offset + size + 7) / 8;
183 s = (unsigned char*)SvGROW(targ, len + 1);
184 (void)memzero(s + targlen, len - targlen + 1);
185 SvCUR_set(targ, len);
189 mask = (1 << size) - 1;
193 s[offset] &= ~(mask << size);
194 s[offset] |= lval << size;
199 s[offset] = lval & 255;
200 else if (size == 16) {
201 s[offset] = (lval >> 8) & 255;
202 s[offset+1] = lval & 255;
204 else if (size == 32) {
205 s[offset] = (lval >> 24) & 255;
206 s[offset+1] = (lval >> 16) & 255;
207 s[offset+2] = (lval >> 8) & 255;
208 s[offset+3] = lval & 255;
214 do_chop(register SV *astr, register SV *sv)
219 if (SvTYPE(sv) == SVt_PVAV) {
224 for (i = 0; i <= max; i++) {
225 sv = (SV*)av_fetch(av, i, FALSE);
226 if (sv && ((sv = *(SV**)sv), sv != &sv_undef))
231 if (SvTYPE(sv) == SVt_PVHV) {
234 (void)hv_iterinit(hv);
236 while (entry = hv_iternext(hv))
237 do_chop(astr,hv_iterval(hv,entry));
241 if (len && !SvPOK(sv))
242 s = SvPV_force(sv, len);
245 sv_setpvn(astr, s, 1);
251 sv_setpvn(astr, "", 0);
256 do_chomp(register SV *sv)
266 if (SvTYPE(sv) == SVt_PVAV) {
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);
278 if (SvTYPE(sv) == SVt_PVHV) {
281 (void)hv_iterinit(hv);
283 while (entry = hv_iternext(hv))
284 count += do_chomp(hv_iterval(hv,entry));
288 if (len && !SvPOKp(sv))
289 s = SvPV_force(sv, len);
296 while (len && s[-1] == '\n') {
304 char *rsptr = SvPV(rs, rslen);
315 if (memNE(s, rsptr, rslen))
330 do_vop(I32 optype, SV *sv, SV *left, SV *right)
332 dTHR; /* just for taint */
348 if (sv != left || (optype != OP_BIT_AND && !SvOK(sv) && !SvGMAGICAL(sv)))
349 sv_setpvn(sv, "", 0); /* avoid undef warning on |= and ^= */
350 lsave = lc = SvPV(left, leftlen);
351 rsave = rc = SvPV(right, rightlen);
352 len = leftlen < rightlen ? leftlen : rightlen;
354 if (SvOK(sv) || SvTYPE(sv) > SVt_PVMG) {
355 dc = SvPV_force(sv, na);
356 if (SvCUR(sv) < len) {
357 dc = SvGROW(sv, len + 1);
358 (void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1);
362 I32 needlen = ((optype == OP_BIT_AND)
363 ? len : (leftlen > rightlen ? leftlen : rightlen));
364 Newz(801, dc, needlen + 1, char);
365 (void)sv_usepvn(sv, dc, needlen);
366 dc = SvPVX(sv); /* sv_usepvn() calls Renew() */
369 (void)SvPOK_only(sv);
371 if (len >= sizeof(long)*4 &&
372 !((long)dc % sizeof(long)) &&
373 !((long)lc % sizeof(long)) &&
374 !((long)rc % sizeof(long))) /* It's almost always aligned... */
376 I32 remainder = len % (sizeof(long)*4);
377 len /= (sizeof(long)*4);
386 *dl++ = *ll++ & *rl++;
387 *dl++ = *ll++ & *rl++;
388 *dl++ = *ll++ & *rl++;
389 *dl++ = *ll++ & *rl++;
394 *dl++ = *ll++ ^ *rl++;
395 *dl++ = *ll++ ^ *rl++;
396 *dl++ = *ll++ ^ *rl++;
397 *dl++ = *ll++ ^ *rl++;
402 *dl++ = *ll++ | *rl++;
403 *dl++ = *ll++ | *rl++;
404 *dl++ = *ll++ | *rl++;
405 *dl++ = *ll++ | *rl++;
420 *dc++ = *lc++ & *rc++;
424 *dc++ = *lc++ ^ *rc++;
428 *dc++ = *lc++ | *rc++;
432 sv_catpvn(sv, rsave + len, rightlen - len);
433 else if (leftlen > len)
434 sv_catpvn(sv, lsave + len, leftlen - len);
452 I32 dokeys = (op->op_type == OP_KEYS);
453 I32 dovalues = (op->op_type == OP_VALUES);
454 I32 realhv = (SvTYPE(hv) == SVt_PVHV);
456 if (op->op_type == OP_RV2HV || op->op_type == OP_PADHV)
457 dokeys = dovalues = TRUE;
460 if (op->op_flags & OPf_MOD) { /* lvalue */
461 dTARGET; /* make sure to clear its target here */
462 if (SvTYPE(TARG) == SVt_PVLV)
463 LvTARG(TARG) = Nullsv;
469 keys = realhv ? hv : avhv_keys((AV*)hv);
470 (void)hv_iterinit(keys); /* always reset iterator regardless */
475 if (gimme == G_SCALAR) {
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);
485 if (LvTARG(TARG) != (SV*)keys) {
487 SvREFCNT_dec(LvTARG(TARG));
488 LvTARG(TARG) = SvREFCNT_inc(keys);
494 if (!SvRMAGICAL(keys) || !mg_find((SV*)keys,'P'))
499 while (hv_iternext(keys)) i++;
505 EXTEND(SP, HvKEYS(keys) * (dokeys + dovalues));
507 PUTBACK; /* hv_iternext and hv_iterval might clobber stack_sp */
508 while (entry = hv_iternext(keys)) {
511 XPUSHs(hv_iterkeysv(entry)); /* won't clobber stack_sp */
513 tmpstr = sv_newmortal();
515 sv_setsv(tmpstr,realhv ?
516 hv_iterval(hv,entry) : avhv_iterval((AV*)hv,entry));
517 DEBUG_H(sv_setpvf(tmpstr, "%lu%%%d=%lu",
518 (unsigned long)HeHASH(entry),
520 (unsigned long)(HeHASH(entry) & HvMAX(keys))));