3 * Copyright (c) 1991-2000, 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."
15 #define PERL_IN_DOOP_C
19 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
24 #define HALF_UTF8_UPGRADE(start,end) \
26 if ((start)<(end)) { \
28 STRLEN LeN = (end) - (start); \
29 NeWsTr = bytes_to_utf8(start, &LeN); \
32 (end) = (start) + LeN; \
37 S_do_trans_simple(pTHX_ SV *sv)
44 I32 sutf = SvUTF8(sv);
49 tbl = (short*)cPVOP->op_pv;
51 Perl_croak(aTHX_ "panic: do_trans");
53 s = (U8*)SvPV(sv, len);
56 /* First, take care of non-UTF8 input strings, because they're easy */
59 if ((ch = tbl[*s]) >= 0) {
70 /* Allow for expansion: $_="a".chr(400); tr/a/\xFE/, FE needs encoding */
71 Newz(0, d, len*2+1, U8);
78 /* Need to check this, otherwise 128..255 won't match */
79 c = utf8_to_uv(s, send - s, &ulen, 0);
80 if (c < 0x100 && (ch = tbl[(short)c]) >= 0) {
88 else { /* No match -> copy */
94 sv_setpvn(sv, (const char*)dstart, d - dstart);
102 S_do_trans_count(pTHX_ SV *sv)/* SPC - OK */
107 I32 hasutf = SvUTF8(sv);
111 tbl = (short*)cPVOP->op_pv;
113 Perl_croak(aTHX_ "panic: do_trans");
115 s = (U8*)SvPV(sv, len);
119 if (hasutf && *s & 0x80)
126 c = utf8_to_uv(s, send - s, &ulen, 0);
129 if (c < 0x100 && tbl[c] >= 0)
139 S_do_trans_complex(pTHX_ SV *sv)/* SPC - NOT OK */
145 I32 hasutf = SvUTF8(sv);
151 tbl = (short*)cPVOP->op_pv;
153 Perl_croak(aTHX_ "panic: do_trans");
155 s = (U8*)SvPV(sv, len);
158 Newz(0, d, len*2+1, U8);
161 if (PL_op->op_private & OPpTRANS_SQUASH) {
165 if (hasutf && *s & 0x80)
168 if ((ch = tbl[*s]) >= 0) {
171 if (p != d - 1 || *p != *d)
174 else if (ch == -1) /* -1 is unmapped character */
175 *d++ = *s; /* -2 is delete character */
183 if (hasutf && *s & 0x80)
184 comp = utf8_to_uv_simple(s, NULL);
190 if (ch == -1) { /* -1 is unmapped character */
197 d = uv_to_utf8(d, ch);
203 s += hasutf && *s & 0x80 ? UNISKIP(*s) : 1;
210 sv_setpvn(sv, (const char*)dstart, d - dstart);
220 S_do_trans_simple_utf8(pTHX_ SV *sv)/* SPC - OK */
230 SV* rv = (SV*)cSVOP->op_sv;
231 HV* hv = (HV*)SvRV(rv);
232 SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
233 UV none = svp ? SvUV(*svp) : 0x7fffffff;
241 s = (U8*)SvPV(sv, len);
245 svp = hv_fetch(hv, "FINAL", 5, FALSE);
249 /* d needs to be bigger than s, in case e.g. upgrading is required */
250 Newz(0, d, len*2+1, U8);
253 if ((uv = swash_fetch(rv, s)) < none) {
256 if ((uv & 0x80) && !isutf++)
257 HALF_UTF8_UPGRADE(dstart,d);
258 d = uv_to_utf8(d, uv);
260 else if (uv == none) {
263 if (i > 1 && !isutf++)
264 HALF_UTF8_UPGRADE(dstart,d);
268 else if (uv == extra) {
273 if (i > 1 && !isutf++)
274 HALF_UTF8_UPGRADE(dstart,d);
275 d = uv_to_utf8(d, final);
281 sv_setpvn(sv, (const char*)dstart, d - dstart);
290 S_do_trans_count_utf8(pTHX_ SV *sv)/* SPC - OK */
297 SV* rv = (SV*)cSVOP->op_sv;
298 HV* hv = (HV*)SvRV(rv);
299 SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
300 UV none = svp ? SvUV(*svp) : 0x7fffffff;
303 s = (U8*)SvPV(sv, len);
305 s = bytes_to_utf8(s, &len);
309 if ((uv = swash_fetch(rv, s)) < none)
318 S_do_trans_complex_utf8(pTHX_ SV *sv) /* SPC - NOT OK */
324 I32 squash = PL_op->op_private & OPpTRANS_SQUASH;
325 I32 del = PL_op->op_private & OPpTRANS_DELETE;
326 SV* rv = (SV*)cSVOP->op_sv;
327 HV* hv = (HV*)SvRV(rv);
328 SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
329 UV none = svp ? SvUV(*svp) : 0x7fffffff;
335 I32 isutf = SvUTF8(sv);
337 s = (U8*)SvPV(sv, len);
340 svp = hv_fetch(hv, "FINAL", 5, FALSE);
344 Newz(0, d, len*2+1, U8);
351 uv = swash_fetch(rv, s);
358 tmpbuf[0] = (( uv >> 6) | 0xc0);
359 tmpbuf[1] = (( uv & 0x3f) | 0x80);
361 uv = swash_fetch(rv, tmpbuf);
367 if ((uv & 0x80) && !isutf++)
368 HALF_UTF8_UPGRADE(dst,d);
369 d = uv_to_utf8(d, uv);
375 else if (uv == none) { /* "none" is unmapped character */
377 *d++ = (U8)utf8_to_uv(s, send - s, &ulen, 0);
382 else if (uv == extra && !del) {
385 d = uv_to_utf8(d, final);
391 matches++; /* "none+1" is delete character */
398 uv = swash_fetch(rv, s);
405 tmpbuf[0] = (( uv >> 6) | 0xc0);
406 tmpbuf[1] = (( uv & 0x3f) | 0x80);
408 uv = swash_fetch(rv, tmpbuf);
412 d = uv_to_utf8(d, uv);
416 else if (uv == none) { /* "none" is unmapped character */
418 *d++ = (U8)utf8_to_uv(s, send - s, &ulen, 0);
422 else if (uv == extra && !del) {
424 d = uv_to_utf8(d, final);
428 matches++; /* "none+1" is delete character */
433 sv_usepvn(sv, (char*)dst, d - dst);
436 SvCUR_set(sv, d - (U8*)SvPVX(sv));
444 Perl_do_trans(pTHX_ SV *sv)
447 I32 hasutf = (PL_op->op_private &
448 (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF));
450 if (SvREADONLY(sv) && !(PL_op->op_private & OPpTRANS_IDENTICAL))
451 Perl_croak(aTHX_ PL_no_modify);
457 (void)SvPV_force(sv, len);
458 if (!(PL_op->op_private & OPpTRANS_IDENTICAL))
459 (void)SvPOK_only_UTF8(sv);
461 DEBUG_t( Perl_deb(aTHX_ "2.TBL\n"));
463 switch (PL_op->op_private & ~hasutf & 63) {
466 return do_trans_simple_utf8(sv);
468 return do_trans_simple(sv);
470 case OPpTRANS_IDENTICAL:
472 return do_trans_count_utf8(sv);
474 return do_trans_count(sv);
478 return do_trans_complex_utf8(sv);
480 return do_trans_complex(sv);
485 Perl_do_join(pTHX_ register SV *sv, SV *del, register SV **mark, register SV **sp)
488 register I32 items = sp - mark;
491 register char *delim = SvPV(del, delimlen);
495 len = (items > 0 ? (delimlen * (items - 1) ) : 0);
496 (void)SvUPGRADE(sv, SVt_PV);
497 if (SvLEN(sv) < len + items) { /* current length is way too short */
498 while (items-- > 0) {
499 if (*mark && !SvGAMAGIC(*mark) && SvOK(*mark)) {
505 SvGROW(sv, len + 1); /* so try to pre-extend */
524 for (; items > 0; items--,mark++) {
525 sv_catpvn(sv,delim,len);
530 for (; items > 0; items--,mark++)
537 Perl_do_sprintf(pTHX_ SV *sv, I32 len, SV **sarg)
540 char *pat = SvPV(*sarg, patlen);
541 bool do_taint = FALSE;
543 sv_vsetpvfn(sv, pat, patlen, Null(va_list*), sarg + 1, len - 1, &do_taint);
549 /* currently converts input to bytes if possible, but doesn't sweat failure */
551 Perl_do_vecget(pTHX_ SV *sv, I32 offset, I32 size)
554 unsigned char *s = (unsigned char *) SvPV(sv, srclen);
559 if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
560 Perl_croak(aTHX_ "Illegal number of bits in vec");
563 (void) Perl_sv_utf8_downgrade(aTHX_ sv, TRUE);
565 offset *= size; /* turn into bit offset */
566 len = (offset + size + 7) / 8; /* required number of bytes */
571 offset >>= 3; /* turn into byte offset */
573 if (offset >= srclen)
576 retnum = (UV) s[offset] << 8;
578 else if (size == 32) {
579 if (offset >= srclen)
581 else if (offset + 1 >= srclen)
583 ((UV) s[offset ] << 24);
584 else if (offset + 2 >= srclen)
586 ((UV) s[offset ] << 24) +
587 ((UV) s[offset + 1] << 16);
590 ((UV) s[offset ] << 24) +
591 ((UV) s[offset + 1] << 16) +
592 ( s[offset + 2] << 8);
595 else if (size == 64) {
596 if (ckWARN(WARN_PORTABLE))
597 Perl_warner(aTHX_ WARN_PORTABLE,
598 "Bit vector size > 32 non-portable");
599 if (offset >= srclen)
601 else if (offset + 1 >= srclen)
603 (UV) s[offset ] << 56;
604 else if (offset + 2 >= srclen)
606 ((UV) s[offset ] << 56) +
607 ((UV) s[offset + 1] << 48);
608 else if (offset + 3 >= srclen)
610 ((UV) s[offset ] << 56) +
611 ((UV) s[offset + 1] << 48) +
612 ((UV) s[offset + 2] << 40);
613 else if (offset + 4 >= srclen)
615 ((UV) s[offset ] << 56) +
616 ((UV) s[offset + 1] << 48) +
617 ((UV) s[offset + 2] << 40) +
618 ((UV) s[offset + 3] << 32);
619 else if (offset + 5 >= srclen)
621 ((UV) s[offset ] << 56) +
622 ((UV) s[offset + 1] << 48) +
623 ((UV) s[offset + 2] << 40) +
624 ((UV) s[offset + 3] << 32) +
625 ( s[offset + 4] << 24);
626 else if (offset + 6 >= srclen)
628 ((UV) s[offset ] << 56) +
629 ((UV) s[offset + 1] << 48) +
630 ((UV) s[offset + 2] << 40) +
631 ((UV) s[offset + 3] << 32) +
632 ((UV) s[offset + 4] << 24) +
633 ((UV) s[offset + 5] << 16);
636 ((UV) s[offset ] << 56) +
637 ((UV) s[offset + 1] << 48) +
638 ((UV) s[offset + 2] << 40) +
639 ((UV) s[offset + 3] << 32) +
640 ((UV) s[offset + 4] << 24) +
641 ((UV) s[offset + 5] << 16) +
642 ( s[offset + 6] << 8);
648 retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1);
650 offset >>= 3; /* turn into byte offset */
655 ((UV) s[offset] << 8) +
659 ((UV) s[offset ] << 24) +
660 ((UV) s[offset + 1] << 16) +
661 ( s[offset + 2] << 8) +
664 else if (size == 64) {
665 if (ckWARN(WARN_PORTABLE))
666 Perl_warner(aTHX_ WARN_PORTABLE,
667 "Bit vector size > 32 non-portable");
669 ((UV) s[offset ] << 56) +
670 ((UV) s[offset + 1] << 48) +
671 ((UV) s[offset + 2] << 40) +
672 ((UV) s[offset + 3] << 32) +
673 ((UV) s[offset + 4] << 24) +
674 ((UV) s[offset + 5] << 16) +
675 ( s[offset + 6] << 8) +
684 /* currently converts input to bytes if possible but doesn't sweat failures,
685 * although it does ensure that the string it clobbers is not marked as
686 * utf8-valid any more
689 Perl_do_vecset(pTHX_ SV *sv)
691 SV *targ = LvTARG(sv);
694 register unsigned char *s;
702 s = (unsigned char*)SvPV_force(targ, targlen);
704 /* This is handled by the SvPOK_only below...
705 if (!Perl_sv_utf8_downgrade(aTHX_ targ, TRUE))
708 (void) Perl_sv_utf8_downgrade(aTHX_ targ, TRUE);
711 (void)SvPOK_only(targ);
713 offset = LvTARGOFF(sv);
715 Perl_croak(aTHX_ "Assigning to negative offset in vec");
716 size = LvTARGLEN(sv);
717 if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
718 Perl_croak(aTHX_ "Illegal number of bits in vec");
720 offset *= size; /* turn into bit offset */
721 len = (offset + size + 7) / 8; /* required number of bytes */
723 s = (unsigned char*)SvGROW(targ, len + 1);
724 (void)memzero((char *)(s + targlen), len - targlen + 1);
725 SvCUR_set(targ, len);
729 mask = (1 << size) - 1;
732 offset >>= 3; /* turn into byte offset */
733 s[offset] &= ~(mask << size);
734 s[offset] |= lval << size;
737 offset >>= 3; /* turn into byte offset */
739 s[offset ] = lval & 0xff;
740 else if (size == 16) {
741 s[offset ] = (lval >> 8) & 0xff;
742 s[offset+1] = lval & 0xff;
744 else if (size == 32) {
745 s[offset ] = (lval >> 24) & 0xff;
746 s[offset+1] = (lval >> 16) & 0xff;
747 s[offset+2] = (lval >> 8) & 0xff;
748 s[offset+3] = lval & 0xff;
751 else if (size == 64) {
752 if (ckWARN(WARN_PORTABLE))
753 Perl_warner(aTHX_ WARN_PORTABLE,
754 "Bit vector size > 32 non-portable");
755 s[offset ] = (lval >> 56) & 0xff;
756 s[offset+1] = (lval >> 48) & 0xff;
757 s[offset+2] = (lval >> 40) & 0xff;
758 s[offset+3] = (lval >> 32) & 0xff;
759 s[offset+4] = (lval >> 24) & 0xff;
760 s[offset+5] = (lval >> 16) & 0xff;
761 s[offset+6] = (lval >> 8) & 0xff;
762 s[offset+7] = lval & 0xff;
770 Perl_do_chop(pTHX_ register SV *astr, register SV *sv)
775 if (SvTYPE(sv) == SVt_PVAV) {
780 for (i = 0; i <= max; i++) {
781 sv = (SV*)av_fetch(av, i, FALSE);
782 if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
787 else if (SvTYPE(sv) == SVt_PVHV) {
790 (void)hv_iterinit(hv);
792 while ((entry = hv_iternext(hv)))
793 do_chop(astr,hv_iterval(hv,entry));
796 else if (SvREADONLY(sv))
797 Perl_croak(aTHX_ PL_no_modify);
799 if (len && !SvPOK(sv))
800 s = SvPV_force(sv, len);
803 char *send = s + len;
806 while ((*s & 0xc0) == 0x80)
808 if (UTF8SKIP(s) != send - s && ckWARN_d(WARN_UTF8))
809 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
810 sv_setpvn(astr, s, send - s);
812 SvCUR_set(sv, s - start);
817 sv_setpvn(astr, "", 0);
821 sv_setpvn(astr, s, 1);
828 sv_setpvn(astr, "", 0);
833 Perl_do_chomp(pTHX_ register SV *sv)
844 if (SvTYPE(sv) == SVt_PVAV) {
849 for (i = 0; i <= max; i++) {
850 sv = (SV*)av_fetch(av, i, FALSE);
851 if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
852 count += do_chomp(sv);
856 else if (SvTYPE(sv) == SVt_PVHV) {
859 (void)hv_iterinit(hv);
861 while ((entry = hv_iternext(hv)))
862 count += do_chomp(hv_iterval(hv,entry));
865 else if (SvREADONLY(sv))
866 Perl_croak(aTHX_ PL_no_modify);
868 if (len && !SvPOKp(sv))
869 s = SvPV_force(sv, len);
876 while (len && s[-1] == '\n') {
884 char *rsptr = SvPV(PL_rs, rslen);
895 if (memNE(s, rsptr, rslen))
910 Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right)
926 bool left_utf = DO_UTF8(left);
927 bool right_utf = DO_UTF8(right);
930 if (left_utf && !right_utf)
931 sv_utf8_upgrade(right);
932 else if (!left_utf && right_utf)
933 sv_utf8_upgrade(left);
935 if (sv != left || (optype != OP_BIT_AND && !SvOK(sv) && !SvGMAGICAL(sv)))
936 sv_setpvn(sv, "", 0); /* avoid undef warning on |= and ^= */
937 lsave = lc = SvPV(left, leftlen);
938 rsave = rc = SvPV(right, rightlen);
939 len = leftlen < rightlen ? leftlen : rightlen;
941 if ((left_utf || right_utf) && (sv == left || sv == right)) {
942 needlen = optype == OP_BIT_AND ? len : leftlen + rightlen;
943 Newz(801, dc, needlen + 1, char);
945 else if (SvOK(sv) || SvTYPE(sv) > SVt_PVMG) {
947 dc = SvPV_force(sv, n_a);
948 if (SvCUR(sv) < len) {
949 dc = SvGROW(sv, len + 1);
950 (void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1);
952 if (optype != OP_BIT_AND && (left_utf || right_utf))
953 dc = SvGROW(sv, leftlen + rightlen + 1);
956 needlen = ((optype == OP_BIT_AND)
957 ? len : (leftlen > rightlen ? leftlen : rightlen));
958 Newz(801, dc, needlen + 1, char);
959 (void)sv_usepvn(sv, dc, needlen);
960 dc = SvPVX(sv); /* sv_usepvn() calls Renew() */
963 (void)SvPOK_only(sv);
964 if (left_utf || right_utf) {
967 STRLEN lulen = leftlen;
968 STRLEN rulen = rightlen;
973 while (lulen && rulen) {
974 luc = utf8_to_uv((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
977 ruc = utf8_to_uv((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
981 dc = (char*)uv_to_utf8((U8*)dc, duc);
983 if (sv == left || sv == right)
984 (void)sv_usepvn(sv, dcsave, needlen);
985 SvCUR_set(sv, dc - dcsave);
988 while (lulen && rulen) {
989 luc = utf8_to_uv((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
992 ruc = utf8_to_uv((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
996 dc = (char*)uv_to_utf8((U8*)dc, duc);
1000 while (lulen && rulen) {
1001 luc = utf8_to_uv((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1004 ruc = utf8_to_uv((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1008 dc = (char*)uv_to_utf8((U8*)dc, duc);
1011 if (sv == left || sv == right)
1012 (void)sv_usepvn(sv, dcsave, needlen);
1013 SvCUR_set(sv, dc - dcsave);
1015 sv_catpvn(sv, rc, rulen);
1017 sv_catpvn(sv, lc, lulen);
1027 if (len >= sizeof(long)*4 &&
1028 !((long)dc % sizeof(long)) &&
1029 !((long)lc % sizeof(long)) &&
1030 !((long)rc % sizeof(long))) /* It's almost always aligned... */
1032 I32 remainder = len % (sizeof(long)*4);
1033 len /= (sizeof(long)*4);
1042 *dl++ = *ll++ & *rl++;
1043 *dl++ = *ll++ & *rl++;
1044 *dl++ = *ll++ & *rl++;
1045 *dl++ = *ll++ & *rl++;
1050 *dl++ = *ll++ ^ *rl++;
1051 *dl++ = *ll++ ^ *rl++;
1052 *dl++ = *ll++ ^ *rl++;
1053 *dl++ = *ll++ ^ *rl++;
1058 *dl++ = *ll++ | *rl++;
1059 *dl++ = *ll++ | *rl++;
1060 *dl++ = *ll++ | *rl++;
1061 *dl++ = *ll++ | *rl++;
1076 *dc++ = *lc++ & *rc++;
1080 *dc++ = *lc++ ^ *rc++;
1084 *dc++ = *lc++ | *rc++;
1088 sv_catpvn(sv, rsave + len, rightlen - len);
1089 else if (leftlen > len)
1090 sv_catpvn(sv, lsave + len, leftlen - len);
1108 I32 gimme = GIMME_V;
1109 I32 dokeys = (PL_op->op_type == OP_KEYS);
1110 I32 dovalues = (PL_op->op_type == OP_VALUES);
1111 I32 realhv = (SvTYPE(hv) == SVt_PVHV);
1113 if (PL_op->op_type == OP_RV2HV || PL_op->op_type == OP_PADHV)
1114 dokeys = dovalues = TRUE;
1117 if (PL_op->op_flags & OPf_MOD) { /* lvalue */
1118 dTARGET; /* make sure to clear its target here */
1119 if (SvTYPE(TARG) == SVt_PVLV)
1120 LvTARG(TARG) = Nullsv;
1126 keys = realhv ? hv : avhv_keys((AV*)hv);
1127 (void)hv_iterinit(keys); /* always reset iterator regardless */
1129 if (gimme == G_VOID)
1132 if (gimme == G_SCALAR) {
1136 if (PL_op->op_flags & OPf_MOD) { /* lvalue */
1137 if (SvTYPE(TARG) < SVt_PVLV) {
1138 sv_upgrade(TARG, SVt_PVLV);
1139 sv_magic(TARG, Nullsv, 'k', Nullch, 0);
1142 if (LvTARG(TARG) != (SV*)keys) {
1144 SvREFCNT_dec(LvTARG(TARG));
1145 LvTARG(TARG) = SvREFCNT_inc(keys);
1151 if (! SvTIED_mg((SV*)keys, 'P'))
1156 while (hv_iternext(keys)) i++;
1162 EXTEND(SP, HvKEYS(keys) * (dokeys + dovalues));
1164 PUTBACK; /* hv_iternext and hv_iterval might clobber stack_sp */
1165 while ((entry = hv_iternext(keys))) {
1168 XPUSHs(hv_iterkeysv(entry)); /* won't clobber stack_sp */
1172 hv_iterval(hv,entry) : avhv_iterval((AV*)hv,entry);
1173 DEBUG_H(Perl_sv_setpvf(aTHX_ tmpstr, "%lu%%%d=%lu",
1174 (unsigned long)HeHASH(entry),
1176 (unsigned long)(HeHASH(entry) & HvMAX(keys))));