3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2004, 2005, by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * "'So that was the job I felt I had to do when I started,' thought Sam."
15 /* This file contains some common functions needed to carry out certain
16 * ops. For example both pp_schomp() and pp_chomp() - scalar and array
17 * chomp operations - call the function do_chomp() found in this file.
21 #define PERL_IN_DOOP_C
29 S_do_trans_simple(pTHX_ SV *sv)
36 const I32 grows = PL_op->op_private & OPpTRANS_GROWS;
39 const short * const tbl = (short*)cPVOP->op_pv;
41 Perl_croak(aTHX_ "panic: do_trans_simple line %d",__LINE__);
43 s = (U8*)SvPV(sv, len);
46 /* First, take care of non-UTF-8 input strings, because they're easy */
49 const I32 ch = tbl[*s];
60 /* Allow for expansion: $_="a".chr(400); tr/a/\xFE/, FE needs encoding */
70 /* Need to check this, otherwise 128..255 won't match */
71 const UV c = utf8n_to_uvchr(s, send - s, &ulen, 0);
72 if (c < 0x100 && (ch = tbl[c]) >= 0) {
74 d = uvchr_to_utf8(d, ch);
77 else { /* No match -> copy */
84 sv_setpvn(sv, (char*)dstart, d - dstart);
89 SvCUR_set(sv, d - dstart);
97 S_do_trans_count(pTHX_ SV *sv)
104 const short * const tbl = (short*)cPVOP->op_pv;
106 Perl_croak(aTHX_ "panic: do_trans_count line %d",__LINE__);
108 s = (const U8*)SvPV_const(sv, len);
117 const I32 complement = PL_op->op_private & OPpTRANS_COMPLEMENT;
120 const UV c = utf8n_to_uvchr(s, send - s, &ulen, 0);
124 } else if (complement)
134 S_do_trans_complex(pTHX_ SV *sv)
142 STRLEN len, rlen = 0;
144 const short * const tbl = (short*)cPVOP->op_pv;
146 Perl_croak(aTHX_ "panic: do_trans_complex line %d",__LINE__);
148 s = (U8*)SvPV(sv, len);
154 if (PL_op->op_private & OPpTRANS_SQUASH) {
157 const I32 ch = tbl[*s];
161 if (p != d - 1 || *p != *d)
164 else if (ch == -1) /* -1 is unmapped character */
166 else if (ch == -2) /* -2 is delete character */
173 const I32 ch = tbl[*s];
178 else if (ch == -1) /* -1 is unmapped character */
180 else if (ch == -2) /* -2 is delete character */
186 SvCUR_set(sv, d - dstart);
189 const I32 complement = PL_op->op_private & OPpTRANS_COMPLEMENT;
190 const I32 grows = PL_op->op_private & OPpTRANS_GROWS;
191 const I32 del = PL_op->op_private & OPpTRANS_DELETE;
194 Newx(d, len*2+1, U8);
198 if (complement && !del)
201 #ifdef MACOS_TRADITIONAL
202 #define comp CoMP /* "comp" is a keyword in some compilers ... */
205 if (PL_op->op_private & OPpTRANS_SQUASH) {
209 const UV comp = utf8_to_uvchr(s, &len);
220 ch = (rlen == 0) ? comp :
221 (comp - 0x100 < rlen) ?
222 tbl[comp+1] : tbl[0x100+rlen];
224 d = uvchr_to_utf8(d, ch);
232 else if ((ch = tbl[comp]) >= 0) {
235 d = uvchr_to_utf8(d, ch);
241 else if (ch == -1) { /* -1 is unmapped character */
245 else if (ch == -2) /* -2 is delete character */
254 const UV comp = utf8_to_uvchr(s, &len);
264 if (comp - 0x100 < rlen)
265 d = uvchr_to_utf8(d, tbl[comp+1]);
267 d = uvchr_to_utf8(d, tbl[0x100+rlen]);
271 else if ((ch = tbl[comp]) >= 0) {
272 d = uvchr_to_utf8(d, ch);
275 else if (ch == -1) { /* -1 is unmapped character */
279 else if (ch == -2) /* -2 is delete character */
285 sv_setpvn(sv, (char*)dstart, d - dstart);
290 SvCUR_set(sv, d - dstart);
299 S_do_trans_simple_utf8(pTHX_ SV *sv)
307 const I32 grows = PL_op->op_private & OPpTRANS_GROWS;
310 SV* const rv = (SV*)cSVOP->op_sv;
311 HV* const hv = (HV*)SvRV(rv);
312 SV* const * svp = hv_fetch(hv, "NONE", 4, FALSE);
313 const UV none = svp ? SvUV(*svp) : 0x7fffffff;
314 const UV extra = none + 1;
319 s = (U8*)SvPV(sv, len);
323 const U8 * const e = s + len;
326 hibit = !NATIVE_IS_INVARIANT(ch);
328 s = bytes_to_utf8(s, &len);
336 svp = hv_fetch(hv, "FINAL", 5, FALSE);
341 /* d needs to be bigger than s, in case e.g. upgrading is required */
342 Newx(d, len * 3 + UTF8_MAXBYTES, U8);
352 const UV uv = swash_fetch(rv, s, TRUE);
356 d = uvuni_to_utf8(d, uv);
358 else if (uv == none) {
359 const int i = UTF8SKIP(s);
364 else if (uv == extra) {
367 d = uvuni_to_utf8(d, final);
373 const STRLEN clen = d - dstart;
374 const STRLEN nlen = dend - dstart + len + UTF8_MAXBYTES;
376 Perl_croak(aTHX_ "panic: do_trans_simple_utf8 line %d",__LINE__);
377 Renew(dstart, nlen + UTF8_MAXBYTES, U8);
379 dend = dstart + nlen;
382 if (grows || hibit) {
383 sv_setpvn(sv, (char*)dstart, d - dstart);
390 SvCUR_set(sv, d - dstart);
399 S_do_trans_count_utf8(pTHX_ SV *sv)
402 const U8 *start = 0, *send;
406 SV* const rv = (SV*)cSVOP->op_sv;
407 HV* const hv = (HV*)SvRV(rv);
408 SV* const * const svp = hv_fetch(hv, "NONE", 4, FALSE);
409 const UV none = svp ? SvUV(*svp) : 0x7fffffff;
410 const UV extra = none + 1;
413 s = (const U8*)SvPV_const(sv, len);
416 const U8 * const e = s + len;
419 hibit = !NATIVE_IS_INVARIANT(ch);
421 start = s = bytes_to_utf8(s, &len);
429 const UV uv = swash_fetch(rv, s, TRUE);
430 if (uv < none || uv == extra)
441 S_do_trans_complex_utf8(pTHX_ SV *sv)
446 const I32 squash = PL_op->op_private & OPpTRANS_SQUASH;
447 const I32 del = PL_op->op_private & OPpTRANS_DELETE;
448 const I32 grows = PL_op->op_private & OPpTRANS_GROWS;
449 SV * const rv = (SV*)cSVOP->op_sv;
450 HV * const hv = (HV*)SvRV(rv);
451 SV * const *svp = hv_fetch(hv, "NONE", 4, FALSE);
452 const UV none = svp ? SvUV(*svp) : 0x7fffffff;
453 const UV extra = none + 1;
455 bool havefinal = FALSE;
460 U8 *s = (U8*)SvPV(sv, len);
461 const I32 isutf8 = SvUTF8(sv);
464 const U8 * const e = s + len;
467 hibit = !NATIVE_IS_INVARIANT(ch);
469 s = bytes_to_utf8(s, &len);
477 svp = hv_fetch(hv, "FINAL", 5, FALSE);
484 /* d needs to be bigger than s, in case e.g. upgrading is required */
485 Newx(d, len * 3 + UTF8_MAXBYTES, U8);
497 UV uv = swash_fetch(rv, s, TRUE);
500 const STRLEN clen = d - dstart;
501 const STRLEN nlen = dend - dstart + len + UTF8_MAXBYTES;
503 Perl_croak(aTHX_ "panic: do_trans_complex_utf8 line %d",__LINE__);
504 Renew(dstart, nlen + UTF8_MAXBYTES, U8);
506 dend = dstart + nlen;
512 d = uvuni_to_utf8(d, uv);
517 else if (uv == none) { /* "none" is unmapped character */
518 const int i = UTF8SKIP(s);
525 else if (uv == extra && !del) {
530 d = uvuni_to_utf8(d, final);
536 uv = utf8_to_uvuni(s, &len);
546 matches++; /* "none+1" is delete character */
552 const UV uv = swash_fetch(rv, s, TRUE);
554 const STRLEN clen = d - dstart;
555 const STRLEN nlen = dend - dstart + len + UTF8_MAXBYTES;
557 Perl_croak(aTHX_ "panic: do_trans_complex_utf8 line %d",__LINE__);
558 Renew(dstart, nlen + UTF8_MAXBYTES, U8);
560 dend = dstart + nlen;
565 d = uvuni_to_utf8(d, uv);
568 else if (uv == none) { /* "none" is unmapped character */
569 const int i = UTF8SKIP(s);
575 else if (uv == extra && !del) {
578 d = uvuni_to_utf8(d, final);
581 matches++; /* "none+1" is delete character */
585 if (grows || hibit) {
586 sv_setpvn(sv, (char*)dstart, d - dstart);
593 SvCUR_set(sv, d - dstart);
602 Perl_do_trans(pTHX_ SV *sv)
605 const I32 hasutf = (PL_op->op_private &
606 (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF));
608 if (SvREADONLY(sv)) {
610 sv_force_normal_flags(sv, 0);
611 if (SvREADONLY(sv) && !(PL_op->op_private & OPpTRANS_IDENTICAL))
612 Perl_croak(aTHX_ PL_no_modify);
614 (void)SvPV_const(sv, len);
617 if (!(PL_op->op_private & OPpTRANS_IDENTICAL)) {
619 (void)SvPV_force(sv, len);
620 (void)SvPOK_only_UTF8(sv);
623 DEBUG_t( Perl_deb(aTHX_ "2.TBL\n"));
625 switch (PL_op->op_private & ~hasutf & (
626 OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF|OPpTRANS_IDENTICAL|
627 OPpTRANS_SQUASH|OPpTRANS_DELETE|OPpTRANS_COMPLEMENT)) {
630 return do_trans_simple_utf8(sv);
632 return do_trans_simple(sv);
634 case OPpTRANS_IDENTICAL:
635 case OPpTRANS_IDENTICAL|OPpTRANS_COMPLEMENT:
637 return do_trans_count_utf8(sv);
639 return do_trans_count(sv);
643 return do_trans_complex_utf8(sv);
645 return do_trans_complex(sv);
650 Perl_do_join(pTHX_ register SV *sv, SV *del, register SV **mark, register SV **sp)
652 SV ** const oldmark = mark;
653 register I32 items = sp - mark;
657 (void) SvPV_const(del, delimlen); /* stringify and get the delimlen */
658 /* SvCUR assumes it's SvPOK() and woe betide you if it's not. */
661 len = (items > 0 ? (delimlen * (items - 1) ) : 0);
662 SvUPGRADE(sv, SVt_PV);
663 if (SvLEN(sv) < len + items) { /* current length is way too short */
664 while (items-- > 0) {
665 if (*mark && !SvGAMAGIC(*mark) && SvOK(*mark)) {
667 SvPV_const(*mark, tmplen);
672 SvGROW(sv, len + 1); /* so try to pre-extend */
679 sv_setpvn(sv, "", 0);
680 /* sv_setpv retains old UTF8ness [perl #24846] */
683 if (PL_tainting && SvMAGICAL(sv))
693 for (; items > 0; items--,mark++) {
699 for (; items > 0; items--,mark++)
706 Perl_do_sprintf(pTHX_ SV *sv, I32 len, SV **sarg)
709 const char * const pat = SvPV_const(*sarg, patlen);
710 bool do_taint = FALSE;
715 sv_vsetpvfn(sv, pat, patlen, Null(va_list*), sarg + 1, len - 1, &do_taint);
721 /* currently converts input to bytes if possible, but doesn't sweat failure */
723 Perl_do_vecget(pTHX_ SV *sv, I32 offset, I32 size)
726 const unsigned char *s = (const unsigned char *) SvPV_const(sv, srclen);
731 if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
732 Perl_croak(aTHX_ "Illegal number of bits in vec");
735 (void) Perl_sv_utf8_downgrade(aTHX_ sv, TRUE);
737 offset *= size; /* turn into bit offset */
738 len = (offset + size + 7) / 8; /* required number of bytes */
743 offset >>= 3; /* turn into byte offset */
745 if ((STRLEN)offset >= srclen)
748 retnum = (UV) s[offset] << 8;
750 else if (size == 32) {
751 if ((STRLEN)offset >= srclen)
753 else if ((STRLEN)(offset + 1) >= srclen)
755 ((UV) s[offset ] << 24);
756 else if ((STRLEN)(offset + 2) >= srclen)
758 ((UV) s[offset ] << 24) +
759 ((UV) s[offset + 1] << 16);
762 ((UV) s[offset ] << 24) +
763 ((UV) s[offset + 1] << 16) +
764 ( s[offset + 2] << 8);
767 else if (size == 64) {
768 if (ckWARN(WARN_PORTABLE))
769 Perl_warner(aTHX_ packWARN(WARN_PORTABLE),
770 "Bit vector size > 32 non-portable");
771 if (offset >= srclen)
773 else if (offset + 1 >= srclen)
775 (UV) s[offset ] << 56;
776 else if (offset + 2 >= srclen)
778 ((UV) s[offset ] << 56) +
779 ((UV) s[offset + 1] << 48);
780 else if (offset + 3 >= srclen)
782 ((UV) s[offset ] << 56) +
783 ((UV) s[offset + 1] << 48) +
784 ((UV) s[offset + 2] << 40);
785 else if (offset + 4 >= srclen)
787 ((UV) s[offset ] << 56) +
788 ((UV) s[offset + 1] << 48) +
789 ((UV) s[offset + 2] << 40) +
790 ((UV) s[offset + 3] << 32);
791 else if (offset + 5 >= srclen)
793 ((UV) s[offset ] << 56) +
794 ((UV) s[offset + 1] << 48) +
795 ((UV) s[offset + 2] << 40) +
796 ((UV) s[offset + 3] << 32) +
797 ( s[offset + 4] << 24);
798 else if (offset + 6 >= srclen)
800 ((UV) s[offset ] << 56) +
801 ((UV) s[offset + 1] << 48) +
802 ((UV) s[offset + 2] << 40) +
803 ((UV) s[offset + 3] << 32) +
804 ((UV) s[offset + 4] << 24) +
805 ((UV) s[offset + 5] << 16);
808 ((UV) s[offset ] << 56) +
809 ((UV) s[offset + 1] << 48) +
810 ((UV) s[offset + 2] << 40) +
811 ((UV) s[offset + 3] << 32) +
812 ((UV) s[offset + 4] << 24) +
813 ((UV) s[offset + 5] << 16) +
814 ( s[offset + 6] << 8);
820 retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1);
822 offset >>= 3; /* turn into byte offset */
827 ((UV) s[offset] << 8) +
831 ((UV) s[offset ] << 24) +
832 ((UV) s[offset + 1] << 16) +
833 ( s[offset + 2] << 8) +
836 else if (size == 64) {
837 if (ckWARN(WARN_PORTABLE))
838 Perl_warner(aTHX_ packWARN(WARN_PORTABLE),
839 "Bit vector size > 32 non-portable");
841 ((UV) s[offset ] << 56) +
842 ((UV) s[offset + 1] << 48) +
843 ((UV) s[offset + 2] << 40) +
844 ((UV) s[offset + 3] << 32) +
845 ((UV) s[offset + 4] << 24) +
846 ((UV) s[offset + 5] << 16) +
847 ( s[offset + 6] << 8) +
856 /* currently converts input to bytes if possible but doesn't sweat failures,
857 * although it does ensure that the string it clobbers is not marked as
858 * utf8-valid any more
861 Perl_do_vecset(pTHX_ SV *sv)
865 register unsigned char *s;
870 SV * const targ = LvTARG(sv);
874 s = (unsigned char*)SvPV_force(targ, targlen);
876 /* This is handled by the SvPOK_only below...
877 if (!Perl_sv_utf8_downgrade(aTHX_ targ, TRUE))
880 (void) Perl_sv_utf8_downgrade(aTHX_ targ, TRUE);
883 (void)SvPOK_only(targ);
885 offset = LvTARGOFF(sv);
887 Perl_croak(aTHX_ "Negative offset to vec in lvalue context");
888 size = LvTARGLEN(sv);
889 if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
890 Perl_croak(aTHX_ "Illegal number of bits in vec");
892 offset *= size; /* turn into bit offset */
893 len = (offset + size + 7) / 8; /* required number of bytes */
895 s = (unsigned char*)SvGROW(targ, len + 1);
896 (void)memzero((char *)(s + targlen), len - targlen + 1);
897 SvCUR_set(targ, len);
901 mask = (1 << size) - 1;
904 offset >>= 3; /* turn into byte offset */
905 s[offset] &= ~(mask << size);
906 s[offset] |= lval << size;
909 offset >>= 3; /* turn into byte offset */
911 s[offset ] = (U8)( lval & 0xff);
912 else if (size == 16) {
913 s[offset ] = (U8)((lval >> 8) & 0xff);
914 s[offset+1] = (U8)( lval & 0xff);
916 else if (size == 32) {
917 s[offset ] = (U8)((lval >> 24) & 0xff);
918 s[offset+1] = (U8)((lval >> 16) & 0xff);
919 s[offset+2] = (U8)((lval >> 8) & 0xff);
920 s[offset+3] = (U8)( lval & 0xff);
923 else if (size == 64) {
924 if (ckWARN(WARN_PORTABLE))
925 Perl_warner(aTHX_ packWARN(WARN_PORTABLE),
926 "Bit vector size > 32 non-portable");
927 s[offset ] = (U8)((lval >> 56) & 0xff);
928 s[offset+1] = (U8)((lval >> 48) & 0xff);
929 s[offset+2] = (U8)((lval >> 40) & 0xff);
930 s[offset+3] = (U8)((lval >> 32) & 0xff);
931 s[offset+4] = (U8)((lval >> 24) & 0xff);
932 s[offset+5] = (U8)((lval >> 16) & 0xff);
933 s[offset+6] = (U8)((lval >> 8) & 0xff);
934 s[offset+7] = (U8)( lval & 0xff);
942 Perl_do_chop(pTHX_ register SV *astr, register SV *sv)
947 if (SvTYPE(sv) == SVt_PVAV) {
949 AV* const av = (AV*)sv;
950 const I32 max = AvFILL(av);
952 for (i = 0; i <= max; i++) {
953 sv = (SV*)av_fetch(av, i, FALSE);
954 if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
959 else if (SvTYPE(sv) == SVt_PVHV) {
960 HV* const hv = (HV*)sv;
962 (void)hv_iterinit(hv);
963 while ((entry = hv_iternext(hv)))
964 do_chop(astr,hv_iterval(hv,entry));
967 else if (SvREADONLY(sv)) {
969 /* SV is copy-on-write */
970 sv_force_normal_flags(sv, 0);
973 Perl_croak(aTHX_ PL_no_modify);
976 if (PL_encoding && !SvUTF8(sv)) {
977 /* like in do_chomp(), utf8-ize the sv as a side-effect
978 * if we're using encoding. */
979 sv_recode_to_utf8(sv, PL_encoding);
983 if (len && !SvPOK(sv))
984 s = SvPV_force(sv, len);
987 char * const send = s + len;
988 char * const start = s;
990 while (s > start && UTF8_IS_CONTINUATION(*s))
992 if (is_utf8_string((U8*)s, send - s)) {
993 sv_setpvn(astr, s, send - s);
995 SvCUR_set(sv, s - start);
1001 sv_setpvn(astr, "", 0);
1003 else if (s && len) {
1005 sv_setpvn(astr, s, 1);
1012 sv_setpvn(astr, "", 0);
1017 Perl_do_chomp(pTHX_ register SV *sv)
1022 char *temp_buffer = NULL;
1023 SV* svrecode = Nullsv;
1027 if (RsRECORD(PL_rs))
1030 if (SvTYPE(sv) == SVt_PVAV) {
1032 AV* const av = (AV*)sv;
1033 const I32 max = AvFILL(av);
1035 for (i = 0; i <= max; i++) {
1036 sv = (SV*)av_fetch(av, i, FALSE);
1037 if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
1038 count += do_chomp(sv);
1042 else if (SvTYPE(sv) == SVt_PVHV) {
1043 HV* const hv = (HV*)sv;
1045 (void)hv_iterinit(hv);
1046 while ((entry = hv_iternext(hv)))
1047 count += do_chomp(hv_iterval(hv,entry));
1050 else if (SvREADONLY(sv)) {
1052 /* SV is copy-on-write */
1053 sv_force_normal_flags(sv, 0);
1056 Perl_croak(aTHX_ PL_no_modify);
1061 /* XXX, here sv is utf8-ized as a side-effect!
1062 If encoding.pm is used properly, almost string-generating
1063 operations, including literal strings, chr(), input data, etc.
1064 should have been utf8-ized already, right?
1066 sv_recode_to_utf8(sv, PL_encoding);
1073 if (RsPARA(PL_rs)) {
1077 while (len && s[-1] == '\n') {
1084 STRLEN rslen, rs_charlen;
1085 const char *rsptr = SvPV_const(PL_rs, rslen);
1087 rs_charlen = SvUTF8(PL_rs)
1088 ? sv_len_utf8(PL_rs)
1091 if (SvUTF8(PL_rs) != SvUTF8(sv)) {
1092 /* Assumption is that rs is shorter than the scalar. */
1093 if (SvUTF8(PL_rs)) {
1094 /* RS is utf8, scalar is 8 bit. */
1095 bool is_utf8 = TRUE;
1096 temp_buffer = (char*)bytes_from_utf8((U8*)rsptr,
1099 /* Cannot downgrade, therefore cannot possibly match
1101 assert (temp_buffer == rsptr);
1105 rsptr = temp_buffer;
1107 else if (PL_encoding) {
1108 /* RS is 8 bit, encoding.pm is used.
1109 * Do not recode PL_rs as a side-effect. */
1110 svrecode = newSVpvn(rsptr, rslen);
1111 sv_recode_to_utf8(svrecode, PL_encoding);
1112 rsptr = SvPV_const(svrecode, rslen);
1113 rs_charlen = sv_len_utf8(svrecode);
1116 /* RS is 8 bit, scalar is utf8. */
1117 temp_buffer = (char*)bytes_to_utf8((U8*)rsptr, &rslen);
1118 rsptr = temp_buffer;
1127 if (len < rslen - 1)
1131 if (memNE(s, rsptr, rslen))
1133 count += rs_charlen;
1136 s = SvPV_force_nolen(sv);
1145 SvREFCNT_dec(svrecode);
1147 Safefree(temp_buffer);
1152 Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right)
1162 register const char *lc;
1163 register const char *rc;
1168 const bool left_utf = DO_UTF8(left);
1169 const bool right_utf = DO_UTF8(right);
1172 if (left_utf && !right_utf)
1173 sv_utf8_upgrade(right);
1174 else if (!left_utf && right_utf)
1175 sv_utf8_upgrade(left);
1177 if (sv != left || (optype != OP_BIT_AND && !SvOK(sv) && !SvGMAGICAL(sv)))
1178 sv_setpvn(sv, "", 0); /* avoid undef warning on |= and ^= */
1179 lsave = lc = SvPV_nomg_const(left, leftlen);
1180 rsave = rc = SvPV_nomg_const(right, rightlen);
1181 len = leftlen < rightlen ? leftlen : rightlen;
1183 if ((left_utf || right_utf) && (sv == left || sv == right)) {
1184 needlen = optype == OP_BIT_AND ? len : leftlen + rightlen;
1185 Newxz(dc, needlen + 1, char);
1187 else if (SvOK(sv) || SvTYPE(sv) > SVt_PVMG) {
1188 dc = SvPV_force_nomg_nolen(sv);
1189 if (SvLEN(sv) < (STRLEN)(len + 1)) {
1190 dc = SvGROW(sv, (STRLEN)(len + 1));
1191 (void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1);
1193 if (optype != OP_BIT_AND && (left_utf || right_utf))
1194 dc = SvGROW(sv, leftlen + rightlen + 1);
1197 needlen = ((optype == OP_BIT_AND)
1198 ? len : (leftlen > rightlen ? leftlen : rightlen));
1199 Newxz(dc, needlen + 1, char);
1200 (void)sv_usepvn(sv, dc, needlen);
1201 dc = SvPVX(sv); /* sv_usepvn() calls Renew() */
1204 (void)SvPOK_only(sv);
1205 if (left_utf || right_utf) {
1207 char * const dcsave = dc;
1208 STRLEN lulen = leftlen;
1209 STRLEN rulen = rightlen;
1214 while (lulen && rulen) {
1215 luc = utf8n_to_uvchr((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1218 ruc = utf8n_to_uvchr((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1222 dc = (char*)uvchr_to_utf8((U8*)dc, duc);
1224 if (sv == left || sv == right)
1225 (void)sv_usepvn(sv, dcsave, needlen);
1226 SvCUR_set(sv, dc - dcsave);
1229 while (lulen && rulen) {
1230 luc = utf8n_to_uvchr((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1233 ruc = utf8n_to_uvchr((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1237 dc = (char*)uvchr_to_utf8((U8*)dc, duc);
1241 while (lulen && rulen) {
1242 luc = utf8n_to_uvchr((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1245 ruc = utf8n_to_uvchr((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1249 dc = (char*)uvchr_to_utf8((U8*)dc, duc);
1252 if (sv == left || sv == right)
1253 (void)sv_usepvn(sv, dcsave, needlen);
1254 SvCUR_set(sv, dc - dcsave);
1256 sv_catpvn(sv, rc, rulen);
1258 sv_catpvn(sv, lc, lulen);
1268 if (len >= sizeof(long)*4 &&
1269 !((long)dc % sizeof(long)) &&
1270 !((long)lc % sizeof(long)) &&
1271 !((long)rc % sizeof(long))) /* It's almost always aligned... */
1273 const I32 remainder = len % (sizeof(long)*4);
1274 len /= (sizeof(long)*4);
1283 *dl++ = *ll++ & *rl++;
1284 *dl++ = *ll++ & *rl++;
1285 *dl++ = *ll++ & *rl++;
1286 *dl++ = *ll++ & *rl++;
1291 *dl++ = *ll++ ^ *rl++;
1292 *dl++ = *ll++ ^ *rl++;
1293 *dl++ = *ll++ ^ *rl++;
1294 *dl++ = *ll++ ^ *rl++;
1299 *dl++ = *ll++ | *rl++;
1300 *dl++ = *ll++ | *rl++;
1301 *dl++ = *ll++ | *rl++;
1302 *dl++ = *ll++ | *rl++;
1317 *dc++ = *lc++ & *rc++;
1322 *dc++ = *lc++ ^ *rc++;
1326 *dc++ = *lc++ | *rc++;
1329 if (rightlen > (STRLEN)len)
1330 sv_catpvn(sv, rsave + len, rightlen - len);
1331 else if (leftlen > (STRLEN)len)
1332 sv_catpvn(sv, lsave + len, leftlen - len);
1346 HV * const hv = (HV*)POPs;
1349 const I32 gimme = GIMME_V;
1350 const I32 dokv = (PL_op->op_type == OP_RV2HV || PL_op->op_type == OP_PADHV);
1351 const I32 dokeys = dokv || (PL_op->op_type == OP_KEYS);
1352 const I32 dovalues = dokv || (PL_op->op_type == OP_VALUES);
1355 if (PL_op->op_flags & OPf_MOD || LVRET) { /* lvalue */
1356 dTARGET; /* make sure to clear its target here */
1357 if (SvTYPE(TARG) == SVt_PVLV)
1358 LvTARG(TARG) = Nullsv;
1365 (void)hv_iterinit(keys); /* always reset iterator regardless */
1367 if (gimme == G_VOID)
1370 if (gimme == G_SCALAR) {
1374 if (PL_op->op_flags & OPf_MOD || LVRET) { /* lvalue */
1375 if (SvTYPE(TARG) < SVt_PVLV) {
1376 sv_upgrade(TARG, SVt_PVLV);
1377 sv_magic(TARG, Nullsv, PERL_MAGIC_nkeys, Nullch, 0);
1380 if (LvTARG(TARG) != (SV*)keys) {
1382 SvREFCNT_dec(LvTARG(TARG));
1383 LvTARG(TARG) = SvREFCNT_inc(keys);
1389 if (! SvTIED_mg((SV*)keys, PERL_MAGIC_tied))
1393 while (hv_iternext(keys)) i++;
1399 EXTEND(SP, HvKEYS(keys) * (dokeys + dovalues));
1401 PUTBACK; /* hv_iternext and hv_iterval might clobber stack_sp */
1402 while ((entry = hv_iternext(keys))) {
1405 SV* const sv = hv_iterkeysv(entry);
1406 XPUSHs(sv); /* won't clobber stack_sp */
1411 tmpstr = hv_iterval(hv,entry);
1412 DEBUG_H(Perl_sv_setpvf(aTHX_ tmpstr, "%lu%%%d=%lu",
1413 (unsigned long)HeHASH(entry),
1415 (unsigned long)(HeHASH(entry) & HvMAX(keys))));
1426 * c-indentation-style: bsd
1428 * indent-tabs-mode: t
1431 * ex: set ts=8 sts=4 sw=4 noet: