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)
37 const I32 grows = PL_op->op_private & OPpTRANS_GROWS;
40 const short * const tbl = (short*)cPVOP->op_pv;
42 Perl_croak(aTHX_ "panic: do_trans_simple line %d",__LINE__);
44 s = (U8*)SvPV(sv, len);
47 /* First, take care of non-UTF-8 input strings, because they're easy */
50 const I32 ch = tbl[*s];
61 /* Allow for expansion: $_="a".chr(400); tr/a/\xFE/, FE needs encoding */
71 /* Need to check this, otherwise 128..255 won't match */
72 const UV c = utf8n_to_uvchr(s, send - s, &ulen, UTF8_ALLOW_DEFAULT);
73 if (c < 0x100 && (ch = tbl[c]) >= 0) {
75 d = uvchr_to_utf8(d, ch);
78 else { /* No match -> copy */
85 sv_setpvn(sv, (char*)dstart, d - dstart);
90 SvCUR_set(sv, d - dstart);
98 S_do_trans_count(pTHX_ SV *sv)
106 const short * const tbl = (short*)cPVOP->op_pv;
108 Perl_croak(aTHX_ "panic: do_trans_count line %d",__LINE__);
110 s = (const U8*)SvPV_const(sv, len);
119 const I32 complement = PL_op->op_private & OPpTRANS_COMPLEMENT;
122 const UV c = utf8n_to_uvchr(s, send - s, &ulen, UTF8_ALLOW_DEFAULT);
126 } else if (complement)
136 S_do_trans_complex(pTHX_ SV *sv)
145 STRLEN len, rlen = 0;
147 const short * const tbl = (short*)cPVOP->op_pv;
149 Perl_croak(aTHX_ "panic: do_trans_complex line %d",__LINE__);
151 s = (U8*)SvPV(sv, len);
157 if (PL_op->op_private & OPpTRANS_SQUASH) {
160 const I32 ch = tbl[*s];
164 if (p != d - 1 || *p != *d)
167 else if (ch == -1) /* -1 is unmapped character */
169 else if (ch == -2) /* -2 is delete character */
176 const I32 ch = tbl[*s];
181 else if (ch == -1) /* -1 is unmapped character */
183 else if (ch == -2) /* -2 is delete character */
189 SvCUR_set(sv, d - dstart);
192 const I32 complement = PL_op->op_private & OPpTRANS_COMPLEMENT;
193 const I32 grows = PL_op->op_private & OPpTRANS_GROWS;
194 const I32 del = PL_op->op_private & OPpTRANS_DELETE;
197 Newx(d, len*2+1, U8);
201 if (complement && !del)
204 #ifdef MACOS_TRADITIONAL
205 #define comp CoMP /* "comp" is a keyword in some compilers ... */
208 if (PL_op->op_private & OPpTRANS_SQUASH) {
212 const UV comp = utf8n_to_uvchr(s, send - s, &len,
224 ch = (rlen == 0) ? comp :
225 (comp - 0x100 < rlen) ?
226 tbl[comp+1] : tbl[0x100+rlen];
228 d = uvchr_to_utf8(d, ch);
236 else if ((ch = tbl[comp]) >= 0) {
239 d = uvchr_to_utf8(d, ch);
245 else if (ch == -1) { /* -1 is unmapped character */
249 else if (ch == -2) /* -2 is delete character */
258 const UV comp = utf8n_to_uvchr(s, send - s, &len,
269 if (comp - 0x100 < rlen)
270 d = uvchr_to_utf8(d, tbl[comp+1]);
272 d = uvchr_to_utf8(d, tbl[0x100+rlen]);
276 else if ((ch = tbl[comp]) >= 0) {
277 d = uvchr_to_utf8(d, ch);
280 else if (ch == -1) { /* -1 is unmapped character */
284 else if (ch == -2) /* -2 is delete character */
290 sv_setpvn(sv, (char*)dstart, d - dstart);
295 SvCUR_set(sv, d - dstart);
304 S_do_trans_simple_utf8(pTHX_ SV *sv)
313 const I32 grows = PL_op->op_private & OPpTRANS_GROWS;
316 SV* const rv = (SV*)cSVOP->op_sv;
317 HV* const hv = (HV*)SvRV(rv);
318 SV* const * svp = hv_fetchs(hv, "NONE", FALSE);
319 const UV none = svp ? SvUV(*svp) : 0x7fffffff;
320 const UV extra = none + 1;
325 s = (U8*)SvPV(sv, len);
329 const U8 * const e = s + len;
332 hibit = !NATIVE_IS_INVARIANT(ch);
334 s = bytes_to_utf8(s, &len);
342 svp = hv_fetchs(hv, "FINAL", FALSE);
347 /* d needs to be bigger than s, in case e.g. upgrading is required */
348 Newx(d, len * 3 + UTF8_MAXBYTES, U8);
358 const UV uv = swash_fetch(rv, s, TRUE);
362 d = uvuni_to_utf8(d, uv);
364 else if (uv == none) {
365 const int i = UTF8SKIP(s);
370 else if (uv == extra) {
373 d = uvuni_to_utf8(d, final);
379 const STRLEN clen = d - dstart;
380 const STRLEN nlen = dend - dstart + len + UTF8_MAXBYTES;
382 Perl_croak(aTHX_ "panic: do_trans_simple_utf8 line %d",__LINE__);
383 Renew(dstart, nlen + UTF8_MAXBYTES, U8);
385 dend = dstart + nlen;
388 if (grows || hibit) {
389 sv_setpvn(sv, (char*)dstart, d - dstart);
396 SvCUR_set(sv, d - dstart);
405 S_do_trans_count_utf8(pTHX_ SV *sv)
409 const U8 *start = NULL;
414 SV* const rv = (SV*)cSVOP->op_sv;
415 HV* const hv = (HV*)SvRV(rv);
416 SV* const * const svp = hv_fetchs(hv, "NONE", FALSE);
417 const UV none = svp ? SvUV(*svp) : 0x7fffffff;
418 const UV extra = none + 1;
421 s = (const U8*)SvPV_const(sv, len);
424 const U8 * const e = s + len;
427 hibit = !NATIVE_IS_INVARIANT(ch);
429 start = s = bytes_to_utf8(s, &len);
437 const UV uv = swash_fetch(rv, s, TRUE);
438 if (uv < none || uv == extra)
449 S_do_trans_complex_utf8(pTHX_ SV *sv)
455 const I32 squash = PL_op->op_private & OPpTRANS_SQUASH;
456 const I32 del = PL_op->op_private & OPpTRANS_DELETE;
457 const I32 grows = PL_op->op_private & OPpTRANS_GROWS;
458 SV * const rv = (SV*)cSVOP->op_sv;
459 HV * const hv = (HV*)SvRV(rv);
460 SV * const *svp = hv_fetchs(hv, "NONE", FALSE);
461 const UV none = svp ? SvUV(*svp) : 0x7fffffff;
462 const UV extra = none + 1;
464 bool havefinal = FALSE;
469 U8 *s = (U8*)SvPV(sv, len);
470 const I32 isutf8 = SvUTF8(sv);
473 const U8 * const e = s + len;
476 hibit = !NATIVE_IS_INVARIANT(ch);
478 s = bytes_to_utf8(s, &len);
486 svp = hv_fetchs(hv, "FINAL", FALSE);
493 /* d needs to be bigger than s, in case e.g. upgrading is required */
494 Newx(d, len * 3 + UTF8_MAXBYTES, U8);
506 UV uv = swash_fetch(rv, s, TRUE);
509 const STRLEN clen = d - dstart;
510 const STRLEN nlen = dend - dstart + len + UTF8_MAXBYTES;
512 Perl_croak(aTHX_ "panic: do_trans_complex_utf8 line %d",__LINE__);
513 Renew(dstart, nlen + UTF8_MAXBYTES, U8);
515 dend = dstart + nlen;
521 d = uvuni_to_utf8(d, uv);
526 else if (uv == none) { /* "none" is unmapped character */
527 const int i = UTF8SKIP(s);
534 else if (uv == extra && !del) {
539 d = uvuni_to_utf8(d, final);
545 uv = utf8n_to_uvuni(s, send - s, &len, UTF8_ALLOW_DEFAULT);
555 matches++; /* "none+1" is delete character */
561 const UV uv = swash_fetch(rv, s, TRUE);
563 const STRLEN clen = d - dstart;
564 const STRLEN nlen = dend - dstart + len + UTF8_MAXBYTES;
566 Perl_croak(aTHX_ "panic: do_trans_complex_utf8 line %d",__LINE__);
567 Renew(dstart, nlen + UTF8_MAXBYTES, U8);
569 dend = dstart + nlen;
574 d = uvuni_to_utf8(d, uv);
577 else if (uv == none) { /* "none" is unmapped character */
578 const int i = UTF8SKIP(s);
584 else if (uv == extra && !del) {
587 d = uvuni_to_utf8(d, final);
590 matches++; /* "none+1" is delete character */
594 if (grows || hibit) {
595 sv_setpvn(sv, (char*)dstart, d - dstart);
602 SvCUR_set(sv, d - dstart);
611 Perl_do_trans(pTHX_ SV *sv)
615 const I32 hasutf = (PL_op->op_private &
616 (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF));
618 if (SvREADONLY(sv)) {
620 sv_force_normal_flags(sv, 0);
621 if (SvREADONLY(sv) && !(PL_op->op_private & OPpTRANS_IDENTICAL))
622 Perl_croak(aTHX_ PL_no_modify);
624 (void)SvPV_const(sv, len);
627 if (!(PL_op->op_private & OPpTRANS_IDENTICAL)) {
629 (void)SvPV_force(sv, len);
630 (void)SvPOK_only_UTF8(sv);
633 DEBUG_t( Perl_deb(aTHX_ "2.TBL\n"));
635 switch (PL_op->op_private & ~hasutf & (
636 OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF|OPpTRANS_IDENTICAL|
637 OPpTRANS_SQUASH|OPpTRANS_DELETE|OPpTRANS_COMPLEMENT)) {
640 return do_trans_simple_utf8(sv);
642 return do_trans_simple(sv);
644 case OPpTRANS_IDENTICAL:
645 case OPpTRANS_IDENTICAL|OPpTRANS_COMPLEMENT:
647 return do_trans_count_utf8(sv);
649 return do_trans_count(sv);
653 return do_trans_complex_utf8(sv);
655 return do_trans_complex(sv);
660 Perl_do_join(pTHX_ register SV *sv, SV *del, register SV **mark, register SV **sp)
663 SV ** const oldmark = mark;
664 register I32 items = sp - mark;
668 (void) SvPV_const(del, delimlen); /* stringify and get the delimlen */
669 /* SvCUR assumes it's SvPOK() and woe betide you if it's not. */
672 len = (items > 0 ? (delimlen * (items - 1) ) : 0);
673 SvUPGRADE(sv, SVt_PV);
674 if (SvLEN(sv) < len + items) { /* current length is way too short */
675 while (items-- > 0) {
676 if (*mark && !SvGAMAGIC(*mark) && SvOK(*mark)) {
678 SvPV_const(*mark, tmplen);
683 SvGROW(sv, len + 1); /* so try to pre-extend */
690 sv_setpvn(sv, "", 0);
691 /* sv_setpv retains old UTF8ness [perl #24846] */
694 if (PL_tainting && SvMAGICAL(sv))
704 for (; items > 0; items--,mark++) {
710 for (; items > 0; items--,mark++)
717 Perl_do_sprintf(pTHX_ SV *sv, I32 len, SV **sarg)
721 const char * const pat = SvPV_const(*sarg, patlen);
722 bool do_taint = FALSE;
727 sv_vsetpvfn(sv, pat, patlen, NULL, sarg + 1, len - 1, &do_taint);
733 /* currently converts input to bytes if possible, but doesn't sweat failure */
735 Perl_do_vecget(pTHX_ SV *sv, I32 offset, I32 size)
739 const unsigned char *s = (const unsigned char *) SvPV_const(sv, srclen);
744 if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
745 Perl_croak(aTHX_ "Illegal number of bits in vec");
748 (void) Perl_sv_utf8_downgrade(aTHX_ sv, TRUE);
750 offset *= size; /* turn into bit offset */
751 len = (offset + size + 7) / 8; /* required number of bytes */
756 offset >>= 3; /* turn into byte offset */
758 if ((STRLEN)offset >= srclen)
761 retnum = (UV) s[offset] << 8;
763 else if (size == 32) {
764 if ((STRLEN)offset >= srclen)
766 else if ((STRLEN)(offset + 1) >= srclen)
768 ((UV) s[offset ] << 24);
769 else if ((STRLEN)(offset + 2) >= srclen)
771 ((UV) s[offset ] << 24) +
772 ((UV) s[offset + 1] << 16);
775 ((UV) s[offset ] << 24) +
776 ((UV) s[offset + 1] << 16) +
777 ( s[offset + 2] << 8);
780 else if (size == 64) {
781 if (ckWARN(WARN_PORTABLE))
782 Perl_warner(aTHX_ packWARN(WARN_PORTABLE),
783 "Bit vector size > 32 non-portable");
784 if (offset >= srclen)
786 else if (offset + 1 >= srclen)
788 (UV) s[offset ] << 56;
789 else if (offset + 2 >= srclen)
791 ((UV) s[offset ] << 56) +
792 ((UV) s[offset + 1] << 48);
793 else if (offset + 3 >= srclen)
795 ((UV) s[offset ] << 56) +
796 ((UV) s[offset + 1] << 48) +
797 ((UV) s[offset + 2] << 40);
798 else if (offset + 4 >= 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 else if (offset + 5 >= srclen)
806 ((UV) s[offset ] << 56) +
807 ((UV) s[offset + 1] << 48) +
808 ((UV) s[offset + 2] << 40) +
809 ((UV) s[offset + 3] << 32) +
810 ( s[offset + 4] << 24);
811 else if (offset + 6 >= srclen)
813 ((UV) s[offset ] << 56) +
814 ((UV) s[offset + 1] << 48) +
815 ((UV) s[offset + 2] << 40) +
816 ((UV) s[offset + 3] << 32) +
817 ((UV) s[offset + 4] << 24) +
818 ((UV) s[offset + 5] << 16);
821 ((UV) s[offset ] << 56) +
822 ((UV) s[offset + 1] << 48) +
823 ((UV) s[offset + 2] << 40) +
824 ((UV) s[offset + 3] << 32) +
825 ((UV) s[offset + 4] << 24) +
826 ((UV) s[offset + 5] << 16) +
827 ( s[offset + 6] << 8);
833 retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1);
835 offset >>= 3; /* turn into byte offset */
840 ((UV) s[offset] << 8) +
844 ((UV) s[offset ] << 24) +
845 ((UV) s[offset + 1] << 16) +
846 ( s[offset + 2] << 8) +
849 else if (size == 64) {
850 if (ckWARN(WARN_PORTABLE))
851 Perl_warner(aTHX_ packWARN(WARN_PORTABLE),
852 "Bit vector size > 32 non-portable");
854 ((UV) s[offset ] << 56) +
855 ((UV) s[offset + 1] << 48) +
856 ((UV) s[offset + 2] << 40) +
857 ((UV) s[offset + 3] << 32) +
858 ((UV) s[offset + 4] << 24) +
859 ((UV) s[offset + 5] << 16) +
860 ( s[offset + 6] << 8) +
869 /* currently converts input to bytes if possible but doesn't sweat failures,
870 * although it does ensure that the string it clobbers is not marked as
871 * utf8-valid any more
874 Perl_do_vecset(pTHX_ SV *sv)
879 register unsigned char *s;
884 SV * const targ = LvTARG(sv);
888 s = (unsigned char*)SvPV_force(targ, targlen);
890 /* This is handled by the SvPOK_only below...
891 if (!Perl_sv_utf8_downgrade(aTHX_ targ, TRUE))
894 (void) Perl_sv_utf8_downgrade(aTHX_ targ, TRUE);
897 (void)SvPOK_only(targ);
899 offset = LvTARGOFF(sv);
901 Perl_croak(aTHX_ "Negative offset to vec in lvalue context");
902 size = LvTARGLEN(sv);
903 if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */
904 Perl_croak(aTHX_ "Illegal number of bits in vec");
906 offset *= size; /* turn into bit offset */
907 len = (offset + size + 7) / 8; /* required number of bytes */
909 s = (unsigned char*)SvGROW(targ, len + 1);
910 (void)memzero((char *)(s + targlen), len - targlen + 1);
911 SvCUR_set(targ, len);
915 mask = (1 << size) - 1;
918 offset >>= 3; /* turn into byte offset */
919 s[offset] &= ~(mask << size);
920 s[offset] |= lval << size;
923 offset >>= 3; /* turn into byte offset */
925 s[offset ] = (U8)( lval & 0xff);
926 else if (size == 16) {
927 s[offset ] = (U8)((lval >> 8) & 0xff);
928 s[offset+1] = (U8)( lval & 0xff);
930 else if (size == 32) {
931 s[offset ] = (U8)((lval >> 24) & 0xff);
932 s[offset+1] = (U8)((lval >> 16) & 0xff);
933 s[offset+2] = (U8)((lval >> 8) & 0xff);
934 s[offset+3] = (U8)( lval & 0xff);
937 else if (size == 64) {
938 if (ckWARN(WARN_PORTABLE))
939 Perl_warner(aTHX_ packWARN(WARN_PORTABLE),
940 "Bit vector size > 32 non-portable");
941 s[offset ] = (U8)((lval >> 56) & 0xff);
942 s[offset+1] = (U8)((lval >> 48) & 0xff);
943 s[offset+2] = (U8)((lval >> 40) & 0xff);
944 s[offset+3] = (U8)((lval >> 32) & 0xff);
945 s[offset+4] = (U8)((lval >> 24) & 0xff);
946 s[offset+5] = (U8)((lval >> 16) & 0xff);
947 s[offset+6] = (U8)((lval >> 8) & 0xff);
948 s[offset+7] = (U8)( lval & 0xff);
956 Perl_do_chop(pTHX_ register SV *astr, register SV *sv)
962 if (SvTYPE(sv) == SVt_PVAV) {
964 AV* const av = (AV*)sv;
965 const I32 max = AvFILL(av);
967 for (i = 0; i <= max; i++) {
968 sv = (SV*)av_fetch(av, i, FALSE);
969 if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
974 else if (SvTYPE(sv) == SVt_PVHV) {
975 HV* const hv = (HV*)sv;
977 (void)hv_iterinit(hv);
978 while ((entry = hv_iternext(hv)))
979 do_chop(astr,hv_iterval(hv,entry));
982 else if (SvREADONLY(sv)) {
984 /* SV is copy-on-write */
985 sv_force_normal_flags(sv, 0);
988 Perl_croak(aTHX_ PL_no_modify);
991 if (PL_encoding && !SvUTF8(sv)) {
992 /* like in do_chomp(), utf8-ize the sv as a side-effect
993 * if we're using encoding. */
994 sv_recode_to_utf8(sv, PL_encoding);
998 if (len && !SvPOK(sv))
999 s = SvPV_force(sv, len);
1002 char * const send = s + len;
1003 char * const start = s;
1005 while (s > start && UTF8_IS_CONTINUATION(*s))
1007 if (is_utf8_string((U8*)s, send - s)) {
1008 sv_setpvn(astr, s, send - s);
1010 SvCUR_set(sv, s - start);
1016 sv_setpvn(astr, "", 0);
1018 else if (s && len) {
1020 sv_setpvn(astr, s, 1);
1027 sv_setpvn(astr, "", 0);
1032 Perl_do_chomp(pTHX_ register SV *sv)
1038 char *temp_buffer = NULL;
1039 SV* svrecode = NULL;
1043 if (RsRECORD(PL_rs))
1046 if (SvTYPE(sv) == SVt_PVAV) {
1048 AV* const av = (AV*)sv;
1049 const I32 max = AvFILL(av);
1051 for (i = 0; i <= max; i++) {
1052 sv = (SV*)av_fetch(av, i, FALSE);
1053 if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
1054 count += do_chomp(sv);
1058 else if (SvTYPE(sv) == SVt_PVHV) {
1059 HV* const hv = (HV*)sv;
1061 (void)hv_iterinit(hv);
1062 while ((entry = hv_iternext(hv)))
1063 count += do_chomp(hv_iterval(hv,entry));
1066 else if (SvREADONLY(sv)) {
1068 /* SV is copy-on-write */
1069 sv_force_normal_flags(sv, 0);
1072 Perl_croak(aTHX_ PL_no_modify);
1077 /* XXX, here sv is utf8-ized as a side-effect!
1078 If encoding.pm is used properly, almost string-generating
1079 operations, including literal strings, chr(), input data, etc.
1080 should have been utf8-ized already, right?
1082 sv_recode_to_utf8(sv, PL_encoding);
1089 if (RsPARA(PL_rs)) {
1093 while (len && s[-1] == '\n') {
1100 STRLEN rslen, rs_charlen;
1101 const char *rsptr = SvPV_const(PL_rs, rslen);
1103 rs_charlen = SvUTF8(PL_rs)
1104 ? sv_len_utf8(PL_rs)
1107 if (SvUTF8(PL_rs) != SvUTF8(sv)) {
1108 /* Assumption is that rs is shorter than the scalar. */
1109 if (SvUTF8(PL_rs)) {
1110 /* RS is utf8, scalar is 8 bit. */
1111 bool is_utf8 = TRUE;
1112 temp_buffer = (char*)bytes_from_utf8((U8*)rsptr,
1115 /* Cannot downgrade, therefore cannot possibly match
1117 assert (temp_buffer == rsptr);
1121 rsptr = temp_buffer;
1123 else if (PL_encoding) {
1124 /* RS is 8 bit, encoding.pm is used.
1125 * Do not recode PL_rs as a side-effect. */
1126 svrecode = newSVpvn(rsptr, rslen);
1127 sv_recode_to_utf8(svrecode, PL_encoding);
1128 rsptr = SvPV_const(svrecode, rslen);
1129 rs_charlen = sv_len_utf8(svrecode);
1132 /* RS is 8 bit, scalar is utf8. */
1133 temp_buffer = (char*)bytes_to_utf8((U8*)rsptr, &rslen);
1134 rsptr = temp_buffer;
1143 if (len < rslen - 1)
1147 if (memNE(s, rsptr, rslen))
1149 count += rs_charlen;
1152 s = SvPV_force_nolen(sv);
1161 SvREFCNT_dec(svrecode);
1163 Safefree(temp_buffer);
1168 Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right)
1179 register const char *lc;
1180 register const char *rc;
1185 const bool left_utf = DO_UTF8(left);
1186 const bool right_utf = DO_UTF8(right);
1189 if (left_utf && !right_utf)
1190 sv_utf8_upgrade(right);
1191 else if (!left_utf && right_utf)
1192 sv_utf8_upgrade(left);
1194 if (sv != left || (optype != OP_BIT_AND && !SvOK(sv) && !SvGMAGICAL(sv)))
1195 sv_setpvn(sv, "", 0); /* avoid undef warning on |= and ^= */
1196 lsave = lc = SvPV_nomg_const(left, leftlen);
1197 rsave = rc = SvPV_nomg_const(right, rightlen);
1198 len = leftlen < rightlen ? leftlen : rightlen;
1200 if ((left_utf || right_utf) && (sv == left || sv == right)) {
1201 needlen = optype == OP_BIT_AND ? len : leftlen + rightlen;
1202 Newxz(dc, needlen + 1, char);
1204 else if (SvOK(sv) || SvTYPE(sv) > SVt_PVMG) {
1205 dc = SvPV_force_nomg_nolen(sv);
1206 if (SvLEN(sv) < (STRLEN)(len + 1)) {
1207 dc = SvGROW(sv, (STRLEN)(len + 1));
1208 (void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1);
1210 if (optype != OP_BIT_AND && (left_utf || right_utf))
1211 dc = SvGROW(sv, leftlen + rightlen + 1);
1214 needlen = ((optype == OP_BIT_AND)
1215 ? len : (leftlen > rightlen ? leftlen : rightlen));
1216 Newxz(dc, needlen + 1, char);
1217 (void)sv_usepvn(sv, dc, needlen);
1218 dc = SvPVX(sv); /* sv_usepvn() calls Renew() */
1221 (void)SvPOK_only(sv);
1222 if (left_utf || right_utf) {
1224 char * const dcsave = dc;
1225 STRLEN lulen = leftlen;
1226 STRLEN rulen = rightlen;
1231 while (lulen && rulen) {
1232 luc = utf8n_to_uvchr((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1235 ruc = utf8n_to_uvchr((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1239 dc = (char*)uvchr_to_utf8((U8*)dc, duc);
1241 if (sv == left || sv == right)
1242 (void)sv_usepvn(sv, dcsave, needlen);
1243 SvCUR_set(sv, dc - dcsave);
1246 while (lulen && rulen) {
1247 luc = utf8n_to_uvchr((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1250 ruc = utf8n_to_uvchr((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1254 dc = (char*)uvchr_to_utf8((U8*)dc, duc);
1258 while (lulen && rulen) {
1259 luc = utf8n_to_uvchr((U8*)lc, lulen, &ulen, UTF8_ALLOW_ANYUV);
1262 ruc = utf8n_to_uvchr((U8*)rc, rulen, &ulen, UTF8_ALLOW_ANYUV);
1266 dc = (char*)uvchr_to_utf8((U8*)dc, duc);
1269 if (sv == left || sv == right)
1270 (void)sv_usepvn(sv, dcsave, needlen);
1271 SvCUR_set(sv, dc - dcsave);
1273 sv_catpvn(sv, rc, rulen);
1275 sv_catpvn(sv, lc, lulen);
1285 if (len >= sizeof(long)*4 &&
1286 !((long)dc % sizeof(long)) &&
1287 !((long)lc % sizeof(long)) &&
1288 !((long)rc % sizeof(long))) /* It's almost always aligned... */
1290 const I32 remainder = len % (sizeof(long)*4);
1291 len /= (sizeof(long)*4);
1300 *dl++ = *ll++ & *rl++;
1301 *dl++ = *ll++ & *rl++;
1302 *dl++ = *ll++ & *rl++;
1303 *dl++ = *ll++ & *rl++;
1308 *dl++ = *ll++ ^ *rl++;
1309 *dl++ = *ll++ ^ *rl++;
1310 *dl++ = *ll++ ^ *rl++;
1311 *dl++ = *ll++ ^ *rl++;
1316 *dl++ = *ll++ | *rl++;
1317 *dl++ = *ll++ | *rl++;
1318 *dl++ = *ll++ | *rl++;
1319 *dl++ = *ll++ | *rl++;
1334 *dc++ = *lc++ & *rc++;
1339 *dc++ = *lc++ ^ *rc++;
1343 *dc++ = *lc++ | *rc++;
1346 if (rightlen > (STRLEN)len)
1347 sv_catpvn(sv, rsave + len, rightlen - len);
1348 else if (leftlen > (STRLEN)len)
1349 sv_catpvn(sv, lsave + len, leftlen - len);
1364 HV * const hv = (HV*)POPs;
1367 const I32 gimme = GIMME_V;
1368 const I32 dokv = (PL_op->op_type == OP_RV2HV || PL_op->op_type == OP_PADHV);
1369 const I32 dokeys = dokv || (PL_op->op_type == OP_KEYS);
1370 const I32 dovalues = dokv || (PL_op->op_type == OP_VALUES);
1373 if (PL_op->op_flags & OPf_MOD || LVRET) { /* lvalue */
1374 dTARGET; /* make sure to clear its target here */
1375 if (SvTYPE(TARG) == SVt_PVLV)
1376 LvTARG(TARG) = NULL;
1383 (void)hv_iterinit(keys); /* always reset iterator regardless */
1385 if (gimme == G_VOID)
1388 if (gimme == G_SCALAR) {
1392 if (PL_op->op_flags & OPf_MOD || LVRET) { /* lvalue */
1393 if (SvTYPE(TARG) < SVt_PVLV) {
1394 sv_upgrade(TARG, SVt_PVLV);
1395 sv_magic(TARG, NULL, PERL_MAGIC_nkeys, NULL, 0);
1398 if (LvTARG(TARG) != (SV*)keys) {
1400 SvREFCNT_dec(LvTARG(TARG));
1401 LvTARG(TARG) = SvREFCNT_inc_simple(keys);
1407 if (! SvTIED_mg((SV*)keys, PERL_MAGIC_tied))
1411 while (hv_iternext(keys)) i++;
1417 EXTEND(SP, HvKEYS(keys) * (dokeys + dovalues));
1419 PUTBACK; /* hv_iternext and hv_iterval might clobber stack_sp */
1420 while ((entry = hv_iternext(keys))) {
1423 SV* const sv = hv_iterkeysv(entry);
1424 XPUSHs(sv); /* won't clobber stack_sp */
1429 tmpstr = hv_iterval(hv,entry);
1430 DEBUG_H(Perl_sv_setpvf(aTHX_ tmpstr, "%lu%%%d=%lu",
1431 (unsigned long)HeHASH(entry),
1433 (unsigned long)(HeHASH(entry) & HvMAX(keys))));
1444 * c-indentation-style: bsd
1446 * indent-tabs-mode: t
1449 * ex: set ts=8 sts=4 sw=4 noet: