3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2004, 2005, 2006, 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 = NULL;
407 SV* const rv = (SV*)cSVOP->op_sv;
408 HV* const hv = (HV*)SvRV(rv);
409 SV* const * const svp = hv_fetch(hv, "NONE", 4, FALSE);
410 const UV none = svp ? SvUV(*svp) : 0x7fffffff;
411 const UV extra = none + 1;
414 s = (const U8*)SvPV_const(sv, len);
417 const U8 * const e = s + len;
420 hibit = !NATIVE_IS_INVARIANT(ch);
422 start = s = bytes_to_utf8(s, &len);
430 const UV uv = swash_fetch(rv, s, TRUE);
431 if (uv < none || uv == extra)
442 S_do_trans_complex_utf8(pTHX_ SV *sv)
447 const I32 squash = PL_op->op_private & OPpTRANS_SQUASH;
448 const I32 del = PL_op->op_private & OPpTRANS_DELETE;
449 const I32 grows = PL_op->op_private & OPpTRANS_GROWS;
450 SV * const rv = (SV*)cSVOP->op_sv;
451 HV * const hv = (HV*)SvRV(rv);
452 SV * const *svp = hv_fetch(hv, "NONE", 4, FALSE);
453 const UV none = svp ? SvUV(*svp) : 0x7fffffff;
454 const UV extra = none + 1;
456 bool havefinal = FALSE;
461 U8 *s = (U8*)SvPV(sv, len);
462 const I32 isutf8 = SvUTF8(sv);
465 const U8 * const e = s + len;
468 hibit = !NATIVE_IS_INVARIANT(ch);
470 s = bytes_to_utf8(s, &len);
478 svp = hv_fetch(hv, "FINAL", 5, FALSE);
485 /* d needs to be bigger than s, in case e.g. upgrading is required */
486 Newx(d, len * 3 + UTF8_MAXBYTES, U8);
498 UV uv = swash_fetch(rv, s, TRUE);
501 const STRLEN clen = d - dstart;
502 const STRLEN nlen = dend - dstart + len + UTF8_MAXBYTES;
504 Perl_croak(aTHX_ "panic: do_trans_complex_utf8 line %d",__LINE__);
505 Renew(dstart, nlen + UTF8_MAXBYTES, U8);
507 dend = dstart + nlen;
513 d = uvuni_to_utf8(d, uv);
518 else if (uv == none) { /* "none" is unmapped character */
519 const int i = UTF8SKIP(s);
526 else if (uv == extra && !del) {
531 d = uvuni_to_utf8(d, final);
537 uv = utf8_to_uvuni(s, &len);
547 matches++; /* "none+1" is delete character */
553 const UV uv = swash_fetch(rv, s, TRUE);
555 const STRLEN clen = d - dstart;
556 const STRLEN nlen = dend - dstart + len + UTF8_MAXBYTES;
558 Perl_croak(aTHX_ "panic: do_trans_complex_utf8 line %d",__LINE__);
559 Renew(dstart, nlen + UTF8_MAXBYTES, U8);
561 dend = dstart + nlen;
566 d = uvuni_to_utf8(d, uv);
569 else if (uv == none) { /* "none" is unmapped character */
570 const int i = UTF8SKIP(s);
576 else if (uv == extra && !del) {
579 d = uvuni_to_utf8(d, final);
582 matches++; /* "none+1" is delete character */
586 if (grows || hibit) {
587 sv_setpvn(sv, (char*)dstart, d - dstart);
594 SvCUR_set(sv, d - dstart);
603 Perl_do_trans(pTHX_ SV *sv)
606 const I32 hasutf = (PL_op->op_private &
607 (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF));
609 if (SvREADONLY(sv)) {
611 sv_force_normal_flags(sv, 0);
612 if (SvREADONLY(sv) && !(PL_op->op_private & OPpTRANS_IDENTICAL))
613 Perl_croak(aTHX_ PL_no_modify);
615 (void)SvPV_const(sv, len);
618 if (!(PL_op->op_private & OPpTRANS_IDENTICAL)) {
620 (void)SvPV_force(sv, len);
621 (void)SvPOK_only_UTF8(sv);
624 DEBUG_t( Perl_deb(aTHX_ "2.TBL\n"));
626 switch (PL_op->op_private & ~hasutf & (
627 OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF|OPpTRANS_IDENTICAL|
628 OPpTRANS_SQUASH|OPpTRANS_DELETE|OPpTRANS_COMPLEMENT)) {
631 return do_trans_simple_utf8(sv);
633 return do_trans_simple(sv);
635 case OPpTRANS_IDENTICAL:
636 case OPpTRANS_IDENTICAL|OPpTRANS_COMPLEMENT:
638 return do_trans_count_utf8(sv);
640 return do_trans_count(sv);
644 return do_trans_complex_utf8(sv);
646 return do_trans_complex(sv);
651 Perl_do_join(pTHX_ register SV *sv, SV *del, register SV **mark, register SV **sp)
653 SV ** const oldmark = mark;
654 register I32 items = sp - mark;
658 (void) SvPV_const(del, delimlen); /* stringify and get the delimlen */
659 /* SvCUR assumes it's SvPOK() and woe betide you if it's not. */
662 len = (items > 0 ? (delimlen * (items - 1) ) : 0);
663 SvUPGRADE(sv, SVt_PV);
664 if (SvLEN(sv) < len + items) { /* current length is way too short */
665 while (items-- > 0) {
666 if (*mark && !SvGAMAGIC(*mark) && SvOK(*mark)) {
668 SvPV_const(*mark, tmplen);
673 SvGROW(sv, len + 1); /* so try to pre-extend */
680 sv_setpvn(sv, "", 0);
681 /* sv_setpv retains old UTF8ness [perl #24846] */
684 if (PL_tainting && SvMAGICAL(sv))
694 for (; items > 0; items--,mark++) {
700 for (; items > 0; items--,mark++)
707 Perl_do_sprintf(pTHX_ SV *sv, I32 len, SV **sarg)
710 const char * const pat = SvPV_const(*sarg, patlen);
711 bool do_taint = FALSE;
716 sv_vsetpvfn(sv, pat, patlen, Null(va_list*), sarg + 1, len - 1, &do_taint);
722 /* currently converts input to bytes if possible, but doesn't sweat failure */
724 Perl_do_vecget(pTHX_ SV *sv, I32 offset, I32 size)
727 const unsigned char *s = (const unsigned char *) SvPV_const(sv, srclen);
732 if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
733 Perl_croak(aTHX_ "Illegal number of bits in vec");
736 (void) Perl_sv_utf8_downgrade(aTHX_ sv, TRUE);
738 offset *= size; /* turn into bit offset */
739 len = (offset + size + 7) / 8; /* required number of bytes */
744 offset >>= 3; /* turn into byte offset */
746 if ((STRLEN)offset >= srclen)
749 retnum = (UV) s[offset] << 8;
751 else if (size == 32) {
752 if ((STRLEN)offset >= srclen)
754 else if ((STRLEN)(offset + 1) >= srclen)
756 ((UV) s[offset ] << 24);
757 else if ((STRLEN)(offset + 2) >= srclen)
759 ((UV) s[offset ] << 24) +
760 ((UV) s[offset + 1] << 16);
763 ((UV) s[offset ] << 24) +
764 ((UV) s[offset + 1] << 16) +
765 ( s[offset + 2] << 8);
768 else if (size == 64) {
769 if (ckWARN(WARN_PORTABLE))
770 Perl_warner(aTHX_ packWARN(WARN_PORTABLE),
771 "Bit vector size > 32 non-portable");
772 if (offset >= srclen)
774 else if (offset + 1 >= srclen)
776 (UV) s[offset ] << 56;
777 else if (offset + 2 >= srclen)
779 ((UV) s[offset ] << 56) +
780 ((UV) s[offset + 1] << 48);
781 else if (offset + 3 >= srclen)
783 ((UV) s[offset ] << 56) +
784 ((UV) s[offset + 1] << 48) +
785 ((UV) s[offset + 2] << 40);
786 else if (offset + 4 >= srclen)
788 ((UV) s[offset ] << 56) +
789 ((UV) s[offset + 1] << 48) +
790 ((UV) s[offset + 2] << 40) +
791 ((UV) s[offset + 3] << 32);
792 else if (offset + 5 >= srclen)
794 ((UV) s[offset ] << 56) +
795 ((UV) s[offset + 1] << 48) +
796 ((UV) s[offset + 2] << 40) +
797 ((UV) s[offset + 3] << 32) +
798 ( s[offset + 4] << 24);
799 else if (offset + 6 >= srclen)
801 ((UV) s[offset ] << 56) +
802 ((UV) s[offset + 1] << 48) +
803 ((UV) s[offset + 2] << 40) +
804 ((UV) s[offset + 3] << 32) +
805 ((UV) s[offset + 4] << 24) +
806 ((UV) s[offset + 5] << 16);
809 ((UV) s[offset ] << 56) +
810 ((UV) s[offset + 1] << 48) +
811 ((UV) s[offset + 2] << 40) +
812 ((UV) s[offset + 3] << 32) +
813 ((UV) s[offset + 4] << 24) +
814 ((UV) s[offset + 5] << 16) +
815 ( s[offset + 6] << 8);
821 retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1);
823 offset >>= 3; /* turn into byte offset */
828 ((UV) s[offset] << 8) +
832 ((UV) s[offset ] << 24) +
833 ((UV) s[offset + 1] << 16) +
834 ( s[offset + 2] << 8) +
837 else if (size == 64) {
838 if (ckWARN(WARN_PORTABLE))
839 Perl_warner(aTHX_ packWARN(WARN_PORTABLE),
840 "Bit vector size > 32 non-portable");
842 ((UV) s[offset ] << 56) +
843 ((UV) s[offset + 1] << 48) +
844 ((UV) s[offset + 2] << 40) +
845 ((UV) s[offset + 3] << 32) +
846 ((UV) s[offset + 4] << 24) +
847 ((UV) s[offset + 5] << 16) +
848 ( s[offset + 6] << 8) +
857 /* currently converts input to bytes if possible but doesn't sweat failures,
858 * although it does ensure that the string it clobbers is not marked as
859 * utf8-valid any more
862 Perl_do_vecset(pTHX_ SV *sv)
866 register unsigned char *s;
871 SV * const targ = LvTARG(sv);
875 s = (unsigned char*)SvPV_force(targ, targlen);
877 /* This is handled by the SvPOK_only below...
878 if (!Perl_sv_utf8_downgrade(aTHX_ targ, TRUE))
881 (void) Perl_sv_utf8_downgrade(aTHX_ targ, TRUE);
884 (void)SvPOK_only(targ);
886 offset = LvTARGOFF(sv);
888 Perl_croak(aTHX_ "Negative offset to vec in lvalue context");
889 size = LvTARGLEN(sv);
890 if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
891 Perl_croak(aTHX_ "Illegal number of bits in vec");
893 offset *= size; /* turn into bit offset */
894 len = (offset + size + 7) / 8; /* required number of bytes */
896 s = (unsigned char*)SvGROW(targ, len + 1);
897 (void)memzero((char *)(s + targlen), len - targlen + 1);
898 SvCUR_set(targ, len);
902 mask = (1 << size) - 1;
905 offset >>= 3; /* turn into byte offset */
906 s[offset] &= ~(mask << size);
907 s[offset] |= lval << size;
910 offset >>= 3; /* turn into byte offset */
912 s[offset ] = (U8)( lval & 0xff);
913 else if (size == 16) {
914 s[offset ] = (U8)((lval >> 8) & 0xff);
915 s[offset+1] = (U8)( lval & 0xff);
917 else if (size == 32) {
918 s[offset ] = (U8)((lval >> 24) & 0xff);
919 s[offset+1] = (U8)((lval >> 16) & 0xff);
920 s[offset+2] = (U8)((lval >> 8) & 0xff);
921 s[offset+3] = (U8)( lval & 0xff);
924 else if (size == 64) {
925 if (ckWARN(WARN_PORTABLE))
926 Perl_warner(aTHX_ packWARN(WARN_PORTABLE),
927 "Bit vector size > 32 non-portable");
928 s[offset ] = (U8)((lval >> 56) & 0xff);
929 s[offset+1] = (U8)((lval >> 48) & 0xff);
930 s[offset+2] = (U8)((lval >> 40) & 0xff);
931 s[offset+3] = (U8)((lval >> 32) & 0xff);
932 s[offset+4] = (U8)((lval >> 24) & 0xff);
933 s[offset+5] = (U8)((lval >> 16) & 0xff);
934 s[offset+6] = (U8)((lval >> 8) & 0xff);
935 s[offset+7] = (U8)( lval & 0xff);
943 Perl_do_chop(pTHX_ register SV *astr, register SV *sv)
948 if (SvTYPE(sv) == SVt_PVAV) {
950 AV* const av = (AV*)sv;
951 const I32 max = AvFILL(av);
953 for (i = 0; i <= max; i++) {
954 sv = (SV*)av_fetch(av, i, FALSE);
955 if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
960 else if (SvTYPE(sv) == SVt_PVHV) {
961 HV* const hv = (HV*)sv;
963 (void)hv_iterinit(hv);
964 while ((entry = hv_iternext(hv)))
965 do_chop(astr,hv_iterval(hv,entry));
968 else if (SvREADONLY(sv)) {
970 /* SV is copy-on-write */
971 sv_force_normal_flags(sv, 0);
974 Perl_croak(aTHX_ PL_no_modify);
977 if (PL_encoding && !SvUTF8(sv)) {
978 /* like in do_chomp(), utf8-ize the sv as a side-effect
979 * if we're using encoding. */
980 sv_recode_to_utf8(sv, PL_encoding);
984 if (len && !SvPOK(sv))
985 s = SvPV_force(sv, len);
988 char * const send = s + len;
989 char * const start = s;
991 while (s > start && UTF8_IS_CONTINUATION(*s))
993 if (is_utf8_string((U8*)s, send - s)) {
994 sv_setpvn(astr, s, send - s);
996 SvCUR_set(sv, s - start);
1002 sv_setpvn(astr, "", 0);
1004 else if (s && len) {
1006 sv_setpvn(astr, s, 1);
1013 sv_setpvn(astr, "", 0);
1018 Perl_do_chomp(pTHX_ register SV *sv)
1023 char *temp_buffer = NULL;
1024 SV* svrecode = Nullsv;
1028 if (RsRECORD(PL_rs))
1031 if (SvTYPE(sv) == SVt_PVAV) {
1033 AV* const av = (AV*)sv;
1034 const I32 max = AvFILL(av);
1036 for (i = 0; i <= max; i++) {
1037 sv = (SV*)av_fetch(av, i, FALSE);
1038 if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
1039 count += do_chomp(sv);
1043 else if (SvTYPE(sv) == SVt_PVHV) {
1044 HV* const hv = (HV*)sv;
1046 (void)hv_iterinit(hv);
1047 while ((entry = hv_iternext(hv)))
1048 count += do_chomp(hv_iterval(hv,entry));
1051 else if (SvREADONLY(sv)) {
1053 /* SV is copy-on-write */
1054 sv_force_normal_flags(sv, 0);
1057 Perl_croak(aTHX_ PL_no_modify);
1062 /* XXX, here sv is utf8-ized as a side-effect!
1063 If encoding.pm is used properly, almost string-generating
1064 operations, including literal strings, chr(), input data, etc.
1065 should have been utf8-ized already, right?
1067 sv_recode_to_utf8(sv, PL_encoding);
1074 if (RsPARA(PL_rs)) {
1078 while (len && s[-1] == '\n') {
1085 STRLEN rslen, rs_charlen;
1086 const char *rsptr = SvPV_const(PL_rs, rslen);
1088 rs_charlen = SvUTF8(PL_rs)
1089 ? sv_len_utf8(PL_rs)
1092 if (SvUTF8(PL_rs) != SvUTF8(sv)) {
1093 /* Assumption is that rs is shorter than the scalar. */
1094 if (SvUTF8(PL_rs)) {
1095 /* RS is utf8, scalar is 8 bit. */
1096 bool is_utf8 = TRUE;
1097 temp_buffer = (char*)bytes_from_utf8((U8*)rsptr,
1100 /* Cannot downgrade, therefore cannot possibly match
1102 assert (temp_buffer == rsptr);
1106 rsptr = temp_buffer;
1108 else if (PL_encoding) {
1109 /* RS is 8 bit, encoding.pm is used.
1110 * Do not recode PL_rs as a side-effect. */
1111 svrecode = newSVpvn(rsptr, rslen);
1112 sv_recode_to_utf8(svrecode, PL_encoding);
1113 rsptr = SvPV_const(svrecode, rslen);
1114 rs_charlen = sv_len_utf8(svrecode);
1117 /* RS is 8 bit, scalar is utf8. */
1118 temp_buffer = (char*)bytes_to_utf8((U8*)rsptr, &rslen);
1119 rsptr = temp_buffer;
1128 if (len < rslen - 1)
1132 if (memNE(s, rsptr, rslen))
1134 count += rs_charlen;
1137 s = SvPV_force_nolen(sv);
1146 SvREFCNT_dec(svrecode);
1148 Safefree(temp_buffer);
1153 Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right)
1163 register const char *lc;
1164 register const char *rc;
1169 const bool left_utf = DO_UTF8(left);
1170 const bool right_utf = DO_UTF8(right);
1173 if (left_utf && !right_utf)
1174 sv_utf8_upgrade(right);
1175 else if (!left_utf && right_utf)
1176 sv_utf8_upgrade(left);
1178 if (sv != left || (optype != OP_BIT_AND && !SvOK(sv) && !SvGMAGICAL(sv)))
1179 sv_setpvn(sv, "", 0); /* avoid undef warning on |= and ^= */
1180 lsave = lc = SvPV_nomg_const(left, leftlen);
1181 rsave = rc = SvPV_nomg_const(right, rightlen);
1182 len = leftlen < rightlen ? leftlen : rightlen;
1184 if ((left_utf || right_utf) && (sv == left || sv == right)) {
1185 needlen = optype == OP_BIT_AND ? len : leftlen + rightlen;
1186 Newxz(dc, needlen + 1, char);
1188 else if (SvOK(sv) || SvTYPE(sv) > SVt_PVMG) {
1189 dc = SvPV_force_nomg_nolen(sv);
1190 if (SvLEN(sv) < (STRLEN)(len + 1)) {
1191 dc = SvGROW(sv, (STRLEN)(len + 1));
1192 (void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1);
1194 if (optype != OP_BIT_AND && (left_utf || right_utf))
1195 dc = SvGROW(sv, leftlen + rightlen + 1);
1198 needlen = ((optype == OP_BIT_AND)
1199 ? len : (leftlen > rightlen ? leftlen : rightlen));
1200 Newxz(dc, needlen + 1, char);
1201 (void)sv_usepvn(sv, dc, needlen);
1202 dc = SvPVX(sv); /* sv_usepvn() calls Renew() */
1205 (void)SvPOK_only(sv);
1206 if (left_utf || right_utf) {
1208 char * const dcsave = dc;
1209 STRLEN lulen = leftlen;
1210 STRLEN rulen = rightlen;
1215 while (lulen && rulen) {
1216 luc = utf8n_to_uvchr((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1219 ruc = utf8n_to_uvchr((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1223 dc = (char*)uvchr_to_utf8((U8*)dc, duc);
1225 if (sv == left || sv == right)
1226 (void)sv_usepvn(sv, dcsave, needlen);
1227 SvCUR_set(sv, dc - dcsave);
1230 while (lulen && rulen) {
1231 luc = utf8n_to_uvchr((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1234 ruc = utf8n_to_uvchr((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1238 dc = (char*)uvchr_to_utf8((U8*)dc, duc);
1242 while (lulen && rulen) {
1243 luc = utf8n_to_uvchr((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1246 ruc = utf8n_to_uvchr((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1250 dc = (char*)uvchr_to_utf8((U8*)dc, duc);
1253 if (sv == left || sv == right)
1254 (void)sv_usepvn(sv, dcsave, needlen);
1255 SvCUR_set(sv, dc - dcsave);
1257 sv_catpvn(sv, rc, rulen);
1259 sv_catpvn(sv, lc, lulen);
1269 if (len >= sizeof(long)*4 &&
1270 !((long)dc % sizeof(long)) &&
1271 !((long)lc % sizeof(long)) &&
1272 !((long)rc % sizeof(long))) /* It's almost always aligned... */
1274 const I32 remainder = len % (sizeof(long)*4);
1275 len /= (sizeof(long)*4);
1284 *dl++ = *ll++ & *rl++;
1285 *dl++ = *ll++ & *rl++;
1286 *dl++ = *ll++ & *rl++;
1287 *dl++ = *ll++ & *rl++;
1292 *dl++ = *ll++ ^ *rl++;
1293 *dl++ = *ll++ ^ *rl++;
1294 *dl++ = *ll++ ^ *rl++;
1295 *dl++ = *ll++ ^ *rl++;
1300 *dl++ = *ll++ | *rl++;
1301 *dl++ = *ll++ | *rl++;
1302 *dl++ = *ll++ | *rl++;
1303 *dl++ = *ll++ | *rl++;
1318 *dc++ = *lc++ & *rc++;
1323 *dc++ = *lc++ ^ *rc++;
1327 *dc++ = *lc++ | *rc++;
1330 if (rightlen > (STRLEN)len)
1331 sv_catpvn(sv, rsave + len, rightlen - len);
1332 else if (leftlen > (STRLEN)len)
1333 sv_catpvn(sv, lsave + len, leftlen - len);
1347 HV * const hv = (HV*)POPs;
1350 const I32 gimme = GIMME_V;
1351 const I32 dokv = (PL_op->op_type == OP_RV2HV || PL_op->op_type == OP_PADHV);
1352 const I32 dokeys = dokv || (PL_op->op_type == OP_KEYS);
1353 const I32 dovalues = dokv || (PL_op->op_type == OP_VALUES);
1356 if (PL_op->op_flags & OPf_MOD || LVRET) { /* lvalue */
1357 dTARGET; /* make sure to clear its target here */
1358 if (SvTYPE(TARG) == SVt_PVLV)
1359 LvTARG(TARG) = Nullsv;
1366 (void)hv_iterinit(keys); /* always reset iterator regardless */
1368 if (gimme == G_VOID)
1371 if (gimme == G_SCALAR) {
1375 if (PL_op->op_flags & OPf_MOD || LVRET) { /* lvalue */
1376 if (SvTYPE(TARG) < SVt_PVLV) {
1377 sv_upgrade(TARG, SVt_PVLV);
1378 sv_magic(TARG, Nullsv, PERL_MAGIC_nkeys, Nullch, 0);
1381 if (LvTARG(TARG) != (SV*)keys) {
1383 SvREFCNT_dec(LvTARG(TARG));
1384 LvTARG(TARG) = SvREFCNT_inc(keys);
1390 if (! SvTIED_mg((SV*)keys, PERL_MAGIC_tied))
1394 while (hv_iternext(keys)) i++;
1400 EXTEND(SP, HvKEYS(keys) * (dokeys + dovalues));
1402 PUTBACK; /* hv_iternext and hv_iterval might clobber stack_sp */
1403 while ((entry = hv_iternext(keys))) {
1406 SV* const sv = hv_iterkeysv(entry);
1407 XPUSHs(sv); /* won't clobber stack_sp */
1412 tmpstr = hv_iterval(hv,entry);
1413 DEBUG_H(Perl_sv_setpvf(aTHX_ tmpstr, "%lu%%%d=%lu",
1414 (unsigned long)HeHASH(entry),
1416 (unsigned long)(HeHASH(entry) & HvMAX(keys))));
1427 * c-indentation-style: bsd
1429 * indent-tabs-mode: t
1432 * ex: set ts=8 sts=4 sw=4 noet: