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_simple");
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) {
85 else { /* No match -> copy */
91 sv_setpvn(sv, (const char*)dstart, d - dstart);
99 S_do_trans_count(pTHX_ SV *sv)/* SPC - OK */
104 I32 hasutf = SvUTF8(sv);
108 tbl = (short*)cPVOP->op_pv;
110 Perl_croak(aTHX_ "panic: do_trans_count");
112 s = (U8*)SvPV(sv, len);
116 if (hasutf && *s & 0x80)
123 c = utf8_to_uv(s, send - s, &ulen, 0);
126 if (c < 0x100 && tbl[c] >= 0)
136 S_do_trans_complex(pTHX_ SV *sv)/* SPC - NOT OK */
142 I32 hasutf = SvUTF8(sv);
148 tbl = (short*)cPVOP->op_pv;
150 Perl_croak(aTHX_ "panic: do_trans_complex");
152 s = (U8*)SvPV(sv, len);
155 Newz(0, d, len*2+1, U8);
158 if (PL_op->op_private & OPpTRANS_SQUASH) {
162 if (hasutf && *s & 0x80)
165 if ((ch = tbl[*s]) >= 0) {
168 if (p != d - 1 || *p != *d)
171 else if (ch == -1) /* -1 is unmapped character */
172 *d++ = *s; /* -2 is delete character */
180 if (hasutf && *s & 0x80)
181 comp = utf8_to_uv_simple(s, NULL);
187 if (ch == -1) { /* -1 is unmapped character */
193 d = uv_to_utf8(d, ch);
197 s += hasutf && *s & 0x80 ? UNISKIP(*s) : 1;
204 sv_setpvn(sv, (const char*)dstart, d - dstart);
214 S_do_trans_simple_utf8(pTHX_ SV *sv)/* SPC - OK */
224 SV* rv = (SV*)cSVOP->op_sv;
225 HV* hv = (HV*)SvRV(rv);
226 SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
227 UV none = svp ? SvUV(*svp) : 0x7fffffff;
235 s = (U8*)SvPV(sv, len);
239 svp = hv_fetch(hv, "FINAL", 5, FALSE);
243 /* d needs to be bigger than s, in case e.g. upgrading is required */
244 Newz(0, d, len*2+1, U8);
247 if ((uv = swash_fetch(rv, s)) < none) {
250 if ((uv & 0x80) && !isutf++)
251 HALF_UTF8_UPGRADE(dstart,d);
252 d = uv_to_utf8(d, uv);
254 else if (uv == none) {
257 if (i > 1 && !isutf++)
258 HALF_UTF8_UPGRADE(dstart,d);
262 else if (uv == extra) {
267 if (i > 1 && !isutf++)
268 HALF_UTF8_UPGRADE(dstart,d);
269 d = uv_to_utf8(d, final);
275 sv_setpvn(sv, (const char*)dstart, d - dstart);
284 S_do_trans_count_utf8(pTHX_ SV *sv)/* SPC - OK */
291 SV* rv = (SV*)cSVOP->op_sv;
292 HV* hv = (HV*)SvRV(rv);
293 SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
294 UV none = svp ? SvUV(*svp) : 0x7fffffff;
297 s = (U8*)SvPV(sv, len);
299 s = bytes_to_utf8(s, &len);
303 if ((uv = swash_fetch(rv, s)) < none)
312 S_do_trans_complex_utf8(pTHX_ SV *sv) /* SPC - NOT OK */
318 I32 squash = PL_op->op_private & OPpTRANS_SQUASH;
319 I32 del = PL_op->op_private & OPpTRANS_DELETE;
320 SV* rv = (SV*)cSVOP->op_sv;
321 HV* hv = (HV*)SvRV(rv);
322 SV** svp = hv_fetch(hv, "NONE", 4, FALSE);
323 UV none = svp ? SvUV(*svp) : 0x7fffffff;
329 I32 isutf = SvUTF8(sv);
331 s = (U8*)SvPV(sv, len);
334 svp = hv_fetch(hv, "FINAL", 5, FALSE);
338 Newz(0, d, len*2+1, U8);
345 uv = swash_fetch(rv, s);
352 tmpbuf[0] = (( uv >> 6) | 0xc0);
353 tmpbuf[1] = (( uv & 0x3f) | 0x80);
355 uv = swash_fetch(rv, tmpbuf);
361 if ((uv & 0x80) && !isutf++)
362 HALF_UTF8_UPGRADE(dst,d);
363 d = uv_to_utf8(d, uv);
369 else if (uv == none) { /* "none" is unmapped character */
371 *d++ = (U8)utf8_to_uv(s, send - s, &ulen, 0);
376 else if (uv == extra && !del) {
379 d = uv_to_utf8(d, final);
385 matches++; /* "none+1" is delete character */
392 uv = swash_fetch(rv, s);
399 tmpbuf[0] = (( uv >> 6) | 0xc0);
400 tmpbuf[1] = (( uv & 0x3f) | 0x80);
402 uv = swash_fetch(rv, tmpbuf);
406 d = uv_to_utf8(d, uv);
410 else if (uv == none) { /* "none" is unmapped character */
412 *d++ = (U8)utf8_to_uv(s, send - s, &ulen, 0);
416 else if (uv == extra && !del) {
418 d = uv_to_utf8(d, final);
422 matches++; /* "none+1" is delete character */
427 sv_usepvn(sv, (char*)dst, d - dst);
430 SvCUR_set(sv, d - (U8*)SvPVX(sv));
438 Perl_do_trans(pTHX_ SV *sv)
441 I32 hasutf = (PL_op->op_private &
442 (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF));
444 if (SvREADONLY(sv) && !(PL_op->op_private & OPpTRANS_IDENTICAL))
445 Perl_croak(aTHX_ PL_no_modify);
451 (void)SvPV_force(sv, len);
452 if (!(PL_op->op_private & OPpTRANS_IDENTICAL))
453 (void)SvPOK_only_UTF8(sv);
455 DEBUG_t( Perl_deb(aTHX_ "2.TBL\n"));
457 switch (PL_op->op_private & ~hasutf & 63) {
460 return do_trans_simple_utf8(sv);
462 return do_trans_simple(sv);
464 case OPpTRANS_IDENTICAL:
466 return do_trans_count_utf8(sv);
468 return do_trans_count(sv);
472 return do_trans_complex_utf8(sv);
474 return do_trans_complex(sv);
479 Perl_do_join(pTHX_ register SV *sv, SV *del, register SV **mark, register SV **sp)
482 register I32 items = sp - mark;
485 register char *delim = SvPV(del, delimlen);
489 len = (items > 0 ? (delimlen * (items - 1) ) : 0);
490 (void)SvUPGRADE(sv, SVt_PV);
491 if (SvLEN(sv) < len + items) { /* current length is way too short */
492 while (items-- > 0) {
493 if (*mark && !SvGAMAGIC(*mark) && SvOK(*mark)) {
499 SvGROW(sv, len + 1); /* so try to pre-extend */
515 for (; items > 0; items--,mark++) {
521 for (; items > 0; items--,mark++)
528 Perl_do_sprintf(pTHX_ SV *sv, I32 len, SV **sarg)
531 char *pat = SvPV(*sarg, patlen);
532 bool do_taint = FALSE;
534 sv_vsetpvfn(sv, pat, patlen, Null(va_list*), sarg + 1, len - 1, &do_taint);
540 /* currently converts input to bytes if possible, but doesn't sweat failure */
542 Perl_do_vecget(pTHX_ SV *sv, I32 offset, I32 size)
545 unsigned char *s = (unsigned char *) SvPV(sv, srclen);
550 if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
551 Perl_croak(aTHX_ "Illegal number of bits in vec");
554 (void) Perl_sv_utf8_downgrade(aTHX_ sv, TRUE);
556 offset *= size; /* turn into bit offset */
557 len = (offset + size + 7) / 8; /* required number of bytes */
562 offset >>= 3; /* turn into byte offset */
564 if (offset >= srclen)
567 retnum = (UV) s[offset] << 8;
569 else if (size == 32) {
570 if (offset >= srclen)
572 else if (offset + 1 >= srclen)
574 ((UV) s[offset ] << 24);
575 else if (offset + 2 >= srclen)
577 ((UV) s[offset ] << 24) +
578 ((UV) s[offset + 1] << 16);
581 ((UV) s[offset ] << 24) +
582 ((UV) s[offset + 1] << 16) +
583 ( s[offset + 2] << 8);
586 else if (size == 64) {
587 if (ckWARN(WARN_PORTABLE))
588 Perl_warner(aTHX_ WARN_PORTABLE,
589 "Bit vector size > 32 non-portable");
590 if (offset >= srclen)
592 else if (offset + 1 >= srclen)
594 (UV) s[offset ] << 56;
595 else if (offset + 2 >= srclen)
597 ((UV) s[offset ] << 56) +
598 ((UV) s[offset + 1] << 48);
599 else if (offset + 3 >= srclen)
601 ((UV) s[offset ] << 56) +
602 ((UV) s[offset + 1] << 48) +
603 ((UV) s[offset + 2] << 40);
604 else if (offset + 4 >= srclen)
606 ((UV) s[offset ] << 56) +
607 ((UV) s[offset + 1] << 48) +
608 ((UV) s[offset + 2] << 40) +
609 ((UV) s[offset + 3] << 32);
610 else if (offset + 5 >= srclen)
612 ((UV) s[offset ] << 56) +
613 ((UV) s[offset + 1] << 48) +
614 ((UV) s[offset + 2] << 40) +
615 ((UV) s[offset + 3] << 32) +
616 ( s[offset + 4] << 24);
617 else if (offset + 6 >= srclen)
619 ((UV) s[offset ] << 56) +
620 ((UV) s[offset + 1] << 48) +
621 ((UV) s[offset + 2] << 40) +
622 ((UV) s[offset + 3] << 32) +
623 ((UV) s[offset + 4] << 24) +
624 ((UV) s[offset + 5] << 16);
627 ((UV) s[offset ] << 56) +
628 ((UV) s[offset + 1] << 48) +
629 ((UV) s[offset + 2] << 40) +
630 ((UV) s[offset + 3] << 32) +
631 ((UV) s[offset + 4] << 24) +
632 ((UV) s[offset + 5] << 16) +
633 ( s[offset + 6] << 8);
639 retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1);
641 offset >>= 3; /* turn into byte offset */
646 ((UV) s[offset] << 8) +
650 ((UV) s[offset ] << 24) +
651 ((UV) s[offset + 1] << 16) +
652 ( s[offset + 2] << 8) +
655 else if (size == 64) {
656 if (ckWARN(WARN_PORTABLE))
657 Perl_warner(aTHX_ WARN_PORTABLE,
658 "Bit vector size > 32 non-portable");
660 ((UV) s[offset ] << 56) +
661 ((UV) s[offset + 1] << 48) +
662 ((UV) s[offset + 2] << 40) +
663 ((UV) s[offset + 3] << 32) +
664 ((UV) s[offset + 4] << 24) +
665 ((UV) s[offset + 5] << 16) +
666 ( s[offset + 6] << 8) +
675 /* currently converts input to bytes if possible but doesn't sweat failures,
676 * although it does ensure that the string it clobbers is not marked as
677 * utf8-valid any more
680 Perl_do_vecset(pTHX_ SV *sv)
682 SV *targ = LvTARG(sv);
685 register unsigned char *s;
693 s = (unsigned char*)SvPV_force(targ, targlen);
695 /* This is handled by the SvPOK_only below...
696 if (!Perl_sv_utf8_downgrade(aTHX_ targ, TRUE))
699 (void) Perl_sv_utf8_downgrade(aTHX_ targ, TRUE);
702 (void)SvPOK_only(targ);
704 offset = LvTARGOFF(sv);
706 Perl_croak(aTHX_ "Assigning to negative offset in vec");
707 size = LvTARGLEN(sv);
708 if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
709 Perl_croak(aTHX_ "Illegal number of bits in vec");
711 offset *= size; /* turn into bit offset */
712 len = (offset + size + 7) / 8; /* required number of bytes */
714 s = (unsigned char*)SvGROW(targ, len + 1);
715 (void)memzero((char *)(s + targlen), len - targlen + 1);
716 SvCUR_set(targ, len);
720 mask = (1 << size) - 1;
723 offset >>= 3; /* turn into byte offset */
724 s[offset] &= ~(mask << size);
725 s[offset] |= lval << size;
728 offset >>= 3; /* turn into byte offset */
730 s[offset ] = lval & 0xff;
731 else if (size == 16) {
732 s[offset ] = (lval >> 8) & 0xff;
733 s[offset+1] = lval & 0xff;
735 else if (size == 32) {
736 s[offset ] = (lval >> 24) & 0xff;
737 s[offset+1] = (lval >> 16) & 0xff;
738 s[offset+2] = (lval >> 8) & 0xff;
739 s[offset+3] = lval & 0xff;
742 else if (size == 64) {
743 if (ckWARN(WARN_PORTABLE))
744 Perl_warner(aTHX_ WARN_PORTABLE,
745 "Bit vector size > 32 non-portable");
746 s[offset ] = (lval >> 56) & 0xff;
747 s[offset+1] = (lval >> 48) & 0xff;
748 s[offset+2] = (lval >> 40) & 0xff;
749 s[offset+3] = (lval >> 32) & 0xff;
750 s[offset+4] = (lval >> 24) & 0xff;
751 s[offset+5] = (lval >> 16) & 0xff;
752 s[offset+6] = (lval >> 8) & 0xff;
753 s[offset+7] = lval & 0xff;
761 Perl_do_chop(pTHX_ register SV *astr, register SV *sv)
766 if (SvTYPE(sv) == SVt_PVAV) {
771 for (i = 0; i <= max; i++) {
772 sv = (SV*)av_fetch(av, i, FALSE);
773 if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
778 else if (SvTYPE(sv) == SVt_PVHV) {
781 (void)hv_iterinit(hv);
783 while ((entry = hv_iternext(hv)))
784 do_chop(astr,hv_iterval(hv,entry));
787 else if (SvREADONLY(sv))
788 Perl_croak(aTHX_ PL_no_modify);
790 if (len && !SvPOK(sv))
791 s = SvPV_force(sv, len);
794 char *send = s + len;
797 while ((*s & 0xc0) == 0x80)
799 if (UTF8SKIP(s) != send - s && ckWARN_d(WARN_UTF8))
800 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
801 sv_setpvn(astr, s, send - s);
803 SvCUR_set(sv, s - start);
808 sv_setpvn(astr, "", 0);
812 sv_setpvn(astr, s, 1);
819 sv_setpvn(astr, "", 0);
824 Perl_do_chomp(pTHX_ register SV *sv)
835 if (SvTYPE(sv) == SVt_PVAV) {
840 for (i = 0; i <= max; i++) {
841 sv = (SV*)av_fetch(av, i, FALSE);
842 if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
843 count += do_chomp(sv);
847 else if (SvTYPE(sv) == SVt_PVHV) {
850 (void)hv_iterinit(hv);
852 while ((entry = hv_iternext(hv)))
853 count += do_chomp(hv_iterval(hv,entry));
856 else if (SvREADONLY(sv))
857 Perl_croak(aTHX_ PL_no_modify);
859 if (len && !SvPOKp(sv))
860 s = SvPV_force(sv, len);
867 while (len && s[-1] == '\n') {
875 char *rsptr = SvPV(PL_rs, rslen);
886 if (memNE(s, rsptr, rslen))
901 Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right)
917 bool left_utf = DO_UTF8(left);
918 bool right_utf = DO_UTF8(right);
921 if (left_utf && !right_utf)
922 sv_utf8_upgrade(right);
923 else if (!left_utf && right_utf)
924 sv_utf8_upgrade(left);
926 if (sv != left || (optype != OP_BIT_AND && !SvOK(sv) && !SvGMAGICAL(sv)))
927 sv_setpvn(sv, "", 0); /* avoid undef warning on |= and ^= */
928 lsave = lc = SvPV(left, leftlen);
929 rsave = rc = SvPV(right, rightlen);
930 len = leftlen < rightlen ? leftlen : rightlen;
932 if ((left_utf || right_utf) && (sv == left || sv == right)) {
933 needlen = optype == OP_BIT_AND ? len : leftlen + rightlen;
934 Newz(801, dc, needlen + 1, char);
936 else if (SvOK(sv) || SvTYPE(sv) > SVt_PVMG) {
938 dc = SvPV_force(sv, n_a);
939 if (SvCUR(sv) < len) {
940 dc = SvGROW(sv, len + 1);
941 (void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1);
943 if (optype != OP_BIT_AND && (left_utf || right_utf))
944 dc = SvGROW(sv, leftlen + rightlen + 1);
947 needlen = ((optype == OP_BIT_AND)
948 ? len : (leftlen > rightlen ? leftlen : rightlen));
949 Newz(801, dc, needlen + 1, char);
950 (void)sv_usepvn(sv, dc, needlen);
951 dc = SvPVX(sv); /* sv_usepvn() calls Renew() */
954 (void)SvPOK_only(sv);
955 if (left_utf || right_utf) {
958 STRLEN lulen = leftlen;
959 STRLEN rulen = rightlen;
964 while (lulen && rulen) {
965 luc = utf8_to_uv((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
968 ruc = utf8_to_uv((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
972 dc = (char*)uv_to_utf8((U8*)dc, duc);
974 if (sv == left || sv == right)
975 (void)sv_usepvn(sv, dcsave, needlen);
976 SvCUR_set(sv, dc - dcsave);
979 while (lulen && rulen) {
980 luc = utf8_to_uv((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
983 ruc = utf8_to_uv((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
987 dc = (char*)uv_to_utf8((U8*)dc, duc);
991 while (lulen && rulen) {
992 luc = utf8_to_uv((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
995 ruc = utf8_to_uv((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
999 dc = (char*)uv_to_utf8((U8*)dc, duc);
1002 if (sv == left || sv == right)
1003 (void)sv_usepvn(sv, dcsave, needlen);
1004 SvCUR_set(sv, dc - dcsave);
1006 sv_catpvn(sv, rc, rulen);
1008 sv_catpvn(sv, lc, lulen);
1018 if (len >= sizeof(long)*4 &&
1019 !((long)dc % sizeof(long)) &&
1020 !((long)lc % sizeof(long)) &&
1021 !((long)rc % sizeof(long))) /* It's almost always aligned... */
1023 I32 remainder = len % (sizeof(long)*4);
1024 len /= (sizeof(long)*4);
1033 *dl++ = *ll++ & *rl++;
1034 *dl++ = *ll++ & *rl++;
1035 *dl++ = *ll++ & *rl++;
1036 *dl++ = *ll++ & *rl++;
1041 *dl++ = *ll++ ^ *rl++;
1042 *dl++ = *ll++ ^ *rl++;
1043 *dl++ = *ll++ ^ *rl++;
1044 *dl++ = *ll++ ^ *rl++;
1049 *dl++ = *ll++ | *rl++;
1050 *dl++ = *ll++ | *rl++;
1051 *dl++ = *ll++ | *rl++;
1052 *dl++ = *ll++ | *rl++;
1067 *dc++ = *lc++ & *rc++;
1071 *dc++ = *lc++ ^ *rc++;
1075 *dc++ = *lc++ | *rc++;
1079 sv_catpvn(sv, rsave + len, rightlen - len);
1080 else if (leftlen > len)
1081 sv_catpvn(sv, lsave + len, leftlen - len);
1099 I32 gimme = GIMME_V;
1100 I32 dokeys = (PL_op->op_type == OP_KEYS);
1101 I32 dovalues = (PL_op->op_type == OP_VALUES);
1102 I32 realhv = (SvTYPE(hv) == SVt_PVHV);
1104 if (PL_op->op_type == OP_RV2HV || PL_op->op_type == OP_PADHV)
1105 dokeys = dovalues = TRUE;
1108 if (PL_op->op_flags & OPf_MOD) { /* lvalue */
1109 dTARGET; /* make sure to clear its target here */
1110 if (SvTYPE(TARG) == SVt_PVLV)
1111 LvTARG(TARG) = Nullsv;
1117 keys = realhv ? hv : avhv_keys((AV*)hv);
1118 (void)hv_iterinit(keys); /* always reset iterator regardless */
1120 if (gimme == G_VOID)
1123 if (gimme == G_SCALAR) {
1127 if (PL_op->op_flags & OPf_MOD) { /* lvalue */
1128 if (SvTYPE(TARG) < SVt_PVLV) {
1129 sv_upgrade(TARG, SVt_PVLV);
1130 sv_magic(TARG, Nullsv, 'k', Nullch, 0);
1133 if (LvTARG(TARG) != (SV*)keys) {
1135 SvREFCNT_dec(LvTARG(TARG));
1136 LvTARG(TARG) = SvREFCNT_inc(keys);
1142 if (! SvTIED_mg((SV*)keys, 'P'))
1147 while (hv_iternext(keys)) i++;
1153 EXTEND(SP, HvKEYS(keys) * (dokeys + dovalues));
1155 PUTBACK; /* hv_iternext and hv_iterval might clobber stack_sp */
1156 while ((entry = hv_iternext(keys))) {
1159 XPUSHs(hv_iterkeysv(entry)); /* won't clobber stack_sp */
1163 hv_iterval(hv,entry) : avhv_iterval((AV*)hv,entry);
1164 DEBUG_H(Perl_sv_setpvf(aTHX_ tmpstr, "%lu%%%d=%lu",
1165 (unsigned long)HeHASH(entry),
1167 (unsigned long)(HeHASH(entry) & HvMAX(keys))));