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)
28 register I32 matches = 0;
29 register I32 squash = PL_op->op_private & OPpTRANS_SQUASH;
32 if (SvREADONLY(sv) && !(PL_op->op_private & OPpTRANS_COUNTONLY))
35 if (PL_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) {
36 SV* rv = (SV*)cSVOP->op_sv;
37 HV* hv = (HV*)SvRV(rv);
38 SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
39 UV none = svp ? SvUV(*svp) : 0x7fffffff;
41 I32 del = PL_op->op_private & OPpTRANS_DELETE;
46 register I32 from_utf = PL_op->op_private & OPpTRANS_FROM_UTF;
47 register I32 to_utf = PL_op->op_private & OPpTRANS_TO_UTF;
49 s = (U8*)SvPV(sv, len);
53 s = (U8*)SvPV_force(sv, len);
56 DEBUG_t( deb("2.TBL\n"));
57 if (PL_op->op_private == (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { /* no other flags */
58 svp = hv_fetch(hv, "FINAL", 5, FALSE);
64 if ((uv = swash_fetch(rv, s)) < none) {
67 d = uv_to_utf8(d, uv);
69 else if (uv == none) {
71 for (i = UTF8SKIP(s); i; i--)
74 else if (uv == extra) {
77 d = uv_to_utf8(d, final);
83 SvCUR_set(sv, d - (U8*)SvPVX(sv));
86 else if (PL_op->op_private == OPpTRANS_FROM_UTF) { /* no other flags */
87 svp = hv_fetch(hv, "FINAL", 5, FALSE);
93 if ((uv = swash_fetch(rv, s)) < none) {
98 else if (uv == none) {
100 uv = utf8_to_uv(s, &ulen);
104 else if (uv == extra) {
113 SvCUR_set(sv, d - (U8*)SvPVX(sv));
116 else if (PL_op->op_private == OPpTRANS_TO_UTF) { /* no other flags */
117 svp = hv_fetch(hv, "FINAL", 5, FALSE);
124 uv_to_utf8(tmpbuf, *s); /* XXX suboptimal */
125 if ((uv = swash_fetch(rv, tmpbuf)) < none) {
128 d = uv_to_utf8(d, uv);
130 else if (uv == none) {
132 uv = utf8_to_uv(s, &ulen);
134 d = uv_to_utf8(d, uv);
136 else if (uv == extra) {
139 d = uv_to_utf8(d, final);
145 SvCUR_set(sv, d - (U8*)SvPVX(sv));
148 else if (PL_op->op_private & OPpTRANS_COUNTONLY) {
151 if (swash_fetch(rv, s) < none)
159 uv_to_utf8(tmpbuf, *s); /* XXX suboptimal */
160 if (swash_fetch(rv, tmpbuf) < none)
170 svp = hv_fetch(hv, "BITS", 4, FALSE);
172 bits = (I32)SvIV(*svp);
174 svp = hv_fetch(hv, "FINAL", 5, FALSE);
178 Newz(801, d, len * (bits >> 3) + 1, char);
185 uv = swash_fetch(rv, s);
188 uv_to_utf8(tmpbuf, *s); /* XXX suboptimal */
189 uv = swash_fetch(rv, tmpbuf);
195 d = uv_to_utf8(d, uv);
203 else if (uv == none) { /* "none" is unmapped character */
206 for (i = UTF8SKIP(s); i; --i)
211 *d++ = (U8)utf8_to_uv(s, &ulen);
217 else if (uv == extra && !del) {
220 d = uv_to_utf8(d, final);
227 matches++; /* "none+1" is delete character */
234 uv = swash_fetch(rv, s);
237 uv_to_utf8(tmpbuf, *s); /* XXX suboptimal */
238 uv = swash_fetch(rv, tmpbuf);
242 d = uv_to_utf8(d, uv);
249 else if (uv == none) { /* "none" is unmapped character */
252 for (i = UTF8SKIP(s); i; --i)
257 *d++ = (U8)utf8_to_uv(s, &ulen);
262 else if (uv == extra && !del) {
265 d = uv_to_utf8(d, final);
271 matches++; /* "none+1" is delete character */
275 sv_usepvn_mg(sv, dst, d - dst);
284 tbl = (short*)cPVOP->op_pv;
285 s = (U8*)SvPV(sv, len);
289 s = (U8*)SvPV_force(sv, len);
290 (void)SvPOK_only(sv);
293 croak("panic: do_trans");
294 DEBUG_t( deb("2.TBL\n"));
295 if (!PL_op->op_private) {
297 if ((ch = tbl[*s]) >= 0) {
305 else if (PL_op->op_private & OPpTRANS_COUNTONLY) {
316 if ((ch = tbl[*s]) >= 0) {
320 if (p == d - 1 && *p == *d)
328 else if (ch == -1) /* -1 is unmapped character */
329 *d++ = *s; /* -2 is delete character */
332 matches += send - d; /* account for disappeared chars */
334 SvCUR_set(sv, d - (U8*)SvPVX(sv));
342 do_join(register SV *sv, SV *del, register SV **mark, register SV **sp)
345 register I32 items = sp - mark;
348 register char *delim = SvPV(del, delimlen);
352 len = (items > 0 ? (delimlen * (items - 1) ) : 0);
353 if (SvTYPE(sv) < SVt_PV)
354 sv_upgrade(sv, SVt_PV);
355 if (SvLEN(sv) < len + items) { /* current length is way too short */
356 while (items-- > 0) {
357 if (*mark && !SvGMAGICAL(*mark) && SvOK(*mark)) {
363 SvGROW(sv, len + 1); /* so try to pre-extend */
374 s = SvPV(*mark, tmplen);
375 sv_setpvn(sv, s, tmplen);
385 for (; items > 0; items--,mark++) {
386 sv_catpvn(sv,delim,len);
391 for (; items > 0; items--,mark++)
398 do_sprintf(SV *sv, I32 len, SV **sarg)
401 char *pat = SvPV(*sarg, patlen);
402 bool do_taint = FALSE;
404 sv_vsetpvfn(sv, pat, patlen, Null(va_list*), sarg + 1, len - 1, &do_taint);
413 SV *targ = LvTARG(sv);
416 register unsigned char *s;
417 register unsigned long lval;
424 s = (unsigned char*)SvPV_force(targ, targlen);
425 lval = U_L(SvNV(sv));
426 offset = LvTARGOFF(sv);
427 size = LvTARGLEN(sv);
429 len = (offset + size + 7) / 8;
431 s = (unsigned char*)SvGROW(targ, len + 1);
432 (void)memzero(s + targlen, len - targlen + 1);
433 SvCUR_set(targ, len);
437 mask = (1 << size) - 1;
441 s[offset] &= ~(mask << size);
442 s[offset] |= lval << size;
447 s[offset] = lval & 255;
448 else if (size == 16) {
449 s[offset] = (lval >> 8) & 255;
450 s[offset+1] = lval & 255;
452 else if (size == 32) {
453 s[offset] = (lval >> 24) & 255;
454 s[offset+1] = (lval >> 16) & 255;
455 s[offset+2] = (lval >> 8) & 255;
456 s[offset+3] = lval & 255;
462 do_chop(register SV *astr, register SV *sv)
467 if (SvTYPE(sv) == SVt_PVAV) {
472 for (i = 0; i <= max; i++) {
473 sv = (SV*)av_fetch(av, i, FALSE);
474 if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
479 if (SvTYPE(sv) == SVt_PVHV) {
482 (void)hv_iterinit(hv);
484 while (entry = hv_iternext(hv))
485 do_chop(astr,hv_iterval(hv,entry));
489 if (len && !SvPOK(sv))
490 s = SvPV_force(sv, len);
493 char *send = s + len;
496 while ((*s & 0xc0) == 0x80)
498 if (UTF8SKIP(s) != send - s)
499 warn("Malformed UTF-8 character");
500 sv_setpvn(astr, s, send - s);
502 SvCUR_set(sv, s - start);
506 sv_setpvn(astr, "", 0);
511 sv_setpvn(astr, s, 1);
517 sv_setpvn(astr, "", 0);
522 do_chomp(register SV *sv)
532 if (SvTYPE(sv) == SVt_PVAV) {
537 for (i = 0; i <= max; i++) {
538 sv = (SV*)av_fetch(av, i, FALSE);
539 if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
540 count += do_chomp(sv);
544 if (SvTYPE(sv) == SVt_PVHV) {
547 (void)hv_iterinit(hv);
549 while (entry = hv_iternext(hv))
550 count += do_chomp(hv_iterval(hv,entry));
554 if (len && !SvPOKp(sv))
555 s = SvPV_force(sv, len);
562 while (len && s[-1] == '\n') {
570 char *rsptr = SvPV(PL_rs, rslen);
581 if (memNE(s, rsptr, rslen))
596 do_vop(I32 optype, SV *sv, SV *left, SV *right)
598 dTHR; /* just for taint */
614 if (sv != left || (optype != OP_BIT_AND && !SvOK(sv) && !SvGMAGICAL(sv)))
615 sv_setpvn(sv, "", 0); /* avoid undef warning on |= and ^= */
616 lsave = lc = SvPV(left, leftlen);
617 rsave = rc = SvPV(right, rightlen);
618 len = leftlen < rightlen ? leftlen : rightlen;
620 if (SvOK(sv) || SvTYPE(sv) > SVt_PVMG) {
621 dc = SvPV_force(sv, PL_na);
622 if (SvCUR(sv) < len) {
623 dc = SvGROW(sv, len + 1);
624 (void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1);
628 I32 needlen = ((optype == OP_BIT_AND)
629 ? len : (leftlen > rightlen ? leftlen : rightlen));
630 Newz(801, dc, needlen + 1, char);
631 (void)sv_usepvn(sv, dc, needlen);
632 dc = SvPVX(sv); /* sv_usepvn() calls Renew() */
635 (void)SvPOK_only(sv);
637 if (len >= sizeof(long)*4 &&
638 !((long)dc % sizeof(long)) &&
639 !((long)lc % sizeof(long)) &&
640 !((long)rc % sizeof(long))) /* It's almost always aligned... */
642 I32 remainder = len % (sizeof(long)*4);
643 len /= (sizeof(long)*4);
652 *dl++ = *ll++ & *rl++;
653 *dl++ = *ll++ & *rl++;
654 *dl++ = *ll++ & *rl++;
655 *dl++ = *ll++ & *rl++;
660 *dl++ = *ll++ ^ *rl++;
661 *dl++ = *ll++ ^ *rl++;
662 *dl++ = *ll++ ^ *rl++;
663 *dl++ = *ll++ ^ *rl++;
668 *dl++ = *ll++ | *rl++;
669 *dl++ = *ll++ | *rl++;
670 *dl++ = *ll++ | *rl++;
671 *dl++ = *ll++ | *rl++;
686 *dc++ = *lc++ & *rc++;
690 *dc++ = *lc++ ^ *rc++;
694 *dc++ = *lc++ | *rc++;
698 sv_catpvn(sv, rsave + len, rightlen - len);
699 else if (leftlen > len)
700 sv_catpvn(sv, lsave + len, leftlen - len);
718 I32 dokeys = (PL_op->op_type == OP_KEYS);
719 I32 dovalues = (PL_op->op_type == OP_VALUES);
720 I32 realhv = (SvTYPE(hv) == SVt_PVHV);
722 if (PL_op->op_type == OP_RV2HV || PL_op->op_type == OP_PADHV)
723 dokeys = dovalues = TRUE;
726 if (PL_op->op_flags & OPf_MOD) { /* lvalue */
727 dTARGET; /* make sure to clear its target here */
728 if (SvTYPE(TARG) == SVt_PVLV)
729 LvTARG(TARG) = Nullsv;
735 keys = realhv ? hv : avhv_keys((AV*)hv);
736 (void)hv_iterinit(keys); /* always reset iterator regardless */
741 if (gimme == G_SCALAR) {
745 if (PL_op->op_flags & OPf_MOD) { /* lvalue */
746 if (SvTYPE(TARG) < SVt_PVLV) {
747 sv_upgrade(TARG, SVt_PVLV);
748 sv_magic(TARG, Nullsv, 'k', Nullch, 0);
751 if (LvTARG(TARG) != (SV*)keys) {
753 SvREFCNT_dec(LvTARG(TARG));
754 LvTARG(TARG) = SvREFCNT_inc(keys);
760 if (!SvRMAGICAL(keys) || !mg_find((SV*)keys,'P'))
765 while (hv_iternext(keys)) i++;
771 EXTEND(SP, HvKEYS(keys) * (dokeys + dovalues));
773 PUTBACK; /* hv_iternext and hv_iterval might clobber stack_sp */
774 while (entry = hv_iternext(keys)) {
777 XPUSHs(hv_iterkeysv(entry)); /* won't clobber stack_sp */
779 tmpstr = sv_newmortal();
781 sv_setsv(tmpstr,realhv ?
782 hv_iterval(hv,entry) : avhv_iterval((AV*)hv,entry));
783 DEBUG_H(sv_setpvf(tmpstr, "%lu%%%d=%lu",
784 (unsigned long)HeHASH(entry),
786 (unsigned long)(HeHASH(entry) & HvMAX(keys))));