3 * Copyright (c) 1998-2000, 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 * 'What a fix!' said Sam. 'That's the one place in all the lands we've ever
12 * heard of that we don't want to see any closer; and that's the one place
13 * we're trying to get to! And that's just where we can't get, nohow.'
15 * 'Well do I understand your speech,' he answered in the same language;
16 * 'yet few strangers do so. Why then do you not speak in the Common Tongue,
17 * as is the custom in the West, if you wish to be answered?'
19 * ...the travellers perceived that the floor was paved with stones of many
20 * hues; branching runes and strange devices intertwined beneath their feet.
24 #define PERL_IN_UTF8_C
30 Perl_uv_to_utf8(pTHX_ U8 *d, UV uv)
37 *d++ = (( uv >> 6) | 0xc0);
38 *d++ = (( uv & 0x3f) | 0x80);
42 *d++ = (( uv >> 12) | 0xe0);
43 *d++ = (((uv >> 6) & 0x3f) | 0x80);
44 *d++ = (( uv & 0x3f) | 0x80);
48 *d++ = (( uv >> 18) | 0xf0);
49 *d++ = (((uv >> 12) & 0x3f) | 0x80);
50 *d++ = (((uv >> 6) & 0x3f) | 0x80);
51 *d++ = (( uv & 0x3f) | 0x80);
55 *d++ = (( uv >> 24) | 0xf8);
56 *d++ = (((uv >> 18) & 0x3f) | 0x80);
57 *d++ = (((uv >> 12) & 0x3f) | 0x80);
58 *d++ = (((uv >> 6) & 0x3f) | 0x80);
59 *d++ = (( uv & 0x3f) | 0x80);
62 if (uv < 0x80000000) {
63 *d++ = (( uv >> 30) | 0xfc);
64 *d++ = (((uv >> 24) & 0x3f) | 0x80);
65 *d++ = (((uv >> 18) & 0x3f) | 0x80);
66 *d++ = (((uv >> 12) & 0x3f) | 0x80);
67 *d++ = (((uv >> 6) & 0x3f) | 0x80);
68 *d++ = (( uv & 0x3f) | 0x80);
72 if (uv < 0x1000000000LL)
75 *d++ = 0xfe; /* Can't match U+FEFF! */
76 *d++ = (((uv >> 30) & 0x3f) | 0x80);
77 *d++ = (((uv >> 24) & 0x3f) | 0x80);
78 *d++ = (((uv >> 18) & 0x3f) | 0x80);
79 *d++ = (((uv >> 12) & 0x3f) | 0x80);
80 *d++ = (((uv >> 6) & 0x3f) | 0x80);
81 *d++ = (( uv & 0x3f) | 0x80);
86 *d++ = 0xff; /* Can't match U+FFFE! */
87 *d++ = 0x80; /* 6 Reserved bits */
88 *d++ = (((uv >> 60) & 0x0f) | 0x80); /* 2 Reserved bits */
89 *d++ = (((uv >> 54) & 0x3f) | 0x80);
90 *d++ = (((uv >> 48) & 0x3f) | 0x80);
91 *d++ = (((uv >> 42) & 0x3f) | 0x80);
92 *d++ = (((uv >> 36) & 0x3f) | 0x80);
93 *d++ = (((uv >> 30) & 0x3f) | 0x80);
94 *d++ = (((uv >> 24) & 0x3f) | 0x80);
95 *d++ = (((uv >> 18) & 0x3f) | 0x80);
96 *d++ = (((uv >> 12) & 0x3f) | 0x80);
97 *d++ = (((uv >> 6) & 0x3f) | 0x80);
98 *d++ = (( uv & 0x3f) | 0x80);
104 /* Tests if some arbitrary number of bytes begins in a valid UTF-8 character.
105 * The actual number of bytes in the UTF-8 character will be returned if it
106 * is valid, otherwise 0. */
108 Perl_is_utf8_char(pTHX_ U8 *s)
119 if (!(u & 0x20)) { len = 2; }
120 else if (!(u & 0x10)) { len = 3; }
121 else if (!(u & 0x08)) { len = 4; }
122 else if (!(u & 0x04)) { len = 5; }
123 else if (!(u & 0x02)) { len = 6; }
124 else if (!(u & 0x01)) { len = 7; }
125 else { len = 13; } /* whoa! */
130 if ((*s & 0xc0) != 0x80)
138 =for apidoc Am|is_utf8_string|U8 *s|STRLEN len
140 Returns true if first C<len> bytes of the given string form valid a UTF8
141 string, false otherwise.
147 Perl_is_utf8_string(pTHX_ U8 *s, STRLEN len)
162 =for apidoc Am|utf8_to_uv|U8 *s|I32 *retlen|I32 checking
164 Returns the character value of the first character in the string C<s>
165 which is assumed to be in UTF8 encoding; C<retlen> will be set to the
166 length, in bytes, of that character, and the pointer C<s> will be
167 advanced to the end of the character.
169 If C<s> does not point to a well-formed UTF8 character, the behaviour
170 is dependent on the value of C<checking>: if this is true, it is
171 assumed that the caller will raise a warning, and this function will
172 set C<retlen> to C<-1> and return. If C<checking> is not true, an optional UTF8
179 Perl_utf8_to_uv(pTHX_ U8* s, I32* retlen, bool checking)
190 if (checking && retlen) {
195 if (ckWARN_d(WARN_UTF8))
196 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
202 if (!(uv & 0x20)) { len = 2; uv &= 0x1f; }
203 else if (!(uv & 0x10)) { len = 3; uv &= 0x0f; }
204 else if (!(uv & 0x08)) { len = 4; uv &= 0x07; }
205 else if (!(uv & 0x04)) { len = 5; uv &= 0x03; }
206 else if (!(uv & 0x02)) { len = 6; uv &= 0x01; }
207 else if (!(uv & 0x01)) { len = 7; uv = 0; }
208 else { len = 13; uv = 0; } /* whoa! */
215 if ((*s & 0xc0) != 0x80) {
217 if (checking && retlen) {
222 if (ckWARN_d(WARN_UTF8))
223 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
229 uv = (uv << 6) | (*s++ & 0x3f);
234 /* utf8_distance(a,b) returns the number of UTF8 characters between
235 the pointers a and b */
238 Perl_utf8_distance(pTHX_ U8 *a, U8 *b)
256 /* WARNING: do not use the following unless you *know* off is within bounds */
259 Perl_utf8_hop(pTHX_ U8 *s, I32 off)
269 while ((*s & 0xc0) == 0x80)
278 =for apidoc Am|U8 *|utf8_to_bytes|U8 *s|STRLEN *len
280 Converts a string C<s> of length C<len> from UTF8 into byte encoding.
281 Unlike C<bytes_to_utf8>, this over-writes the original string, and
282 updates len to contain the new length.
283 Returns zero on failure, setting C<len> to -1.
289 Perl_utf8_to_bytes(pTHX_ U8* s, STRLEN *len)
299 /* ensure valid UTF8 and chars < 256 before updating string */
303 ( (s >= send) || ((*s++ & 0xc0) != 0x80) || ((c & 0xfe) != 0xc2))) {
314 *d++ = (U8)utf8_to_uv(s, &ulen, 0);
324 =for apidoc Am|U8 *|bytes_to_utf8|U8 *s|STRLEN *len
326 Converts a string C<s> of length C<len> from ASCII into UTF8 encoding.
327 Returns a pointer to the newly-created string, and sets C<len> to
328 reflect the new length.
334 Perl_bytes_to_utf8(pTHX_ U8* s, STRLEN *len)
342 Newz(801, d, (*len) * 2 + 1, U8);
350 *d++ = (( uv >> 6) | 0xc0);
351 *d++ = (( uv & 0x3f) | 0x80);
360 * Convert native (big-endian) or reversed (little-endian) UTF-16 to UTF-8.
362 * Destination must be pre-extended to 3/2 source. Do not use in-place.
363 * We optimize for native, for obvious reasons. */
366 Perl_utf16_to_utf8(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen)
372 Perl_croak(aTHX_ "panic: utf16_to_utf8: odd bytelen");
377 UV uv = (p[0] << 8) + p[1]; /* UTF-16BE */
384 *d++ = (( uv >> 6) | 0xc0);
385 *d++ = (( uv & 0x3f) | 0x80);
388 if (uv >= 0xd800 && uv < 0xdbff) { /* surrogates */
391 if (low < 0xdc00 || low >= 0xdfff)
392 Perl_croak(aTHX_ "Malformed UTF-16 surrogate");
393 uv = ((uv - 0xd800) << 10) + (low - 0xdc00) + 0x10000;
396 *d++ = (( uv >> 12) | 0xe0);
397 *d++ = (((uv >> 6) & 0x3f) | 0x80);
398 *d++ = (( uv & 0x3f) | 0x80);
402 *d++ = (( uv >> 18) | 0xf0);
403 *d++ = (((uv >> 12) & 0x3f) | 0x80);
404 *d++ = (((uv >> 6) & 0x3f) | 0x80);
405 *d++ = (( uv & 0x3f) | 0x80);
409 *newlen = d - dstart;
413 /* Note: this one is slightly destructive of the source. */
416 Perl_utf16_to_utf8_reversed(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen)
419 U8* send = s + bytelen;
426 return utf16_to_utf8(p, d, bytelen, newlen);
429 /* for now these are all defined (inefficiently) in terms of the utf8 versions */
432 Perl_is_uni_alnum(pTHX_ U32 c)
434 U8 tmpbuf[UTF8_MAXLEN];
435 uv_to_utf8(tmpbuf, (UV)c);
436 return is_utf8_alnum(tmpbuf);
440 Perl_is_uni_alnumc(pTHX_ U32 c)
442 U8 tmpbuf[UTF8_MAXLEN];
443 uv_to_utf8(tmpbuf, (UV)c);
444 return is_utf8_alnumc(tmpbuf);
448 Perl_is_uni_idfirst(pTHX_ U32 c)
450 U8 tmpbuf[UTF8_MAXLEN];
451 uv_to_utf8(tmpbuf, (UV)c);
452 return is_utf8_idfirst(tmpbuf);
456 Perl_is_uni_alpha(pTHX_ U32 c)
458 U8 tmpbuf[UTF8_MAXLEN];
459 uv_to_utf8(tmpbuf, (UV)c);
460 return is_utf8_alpha(tmpbuf);
464 Perl_is_uni_ascii(pTHX_ U32 c)
466 U8 tmpbuf[UTF8_MAXLEN];
467 uv_to_utf8(tmpbuf, (UV)c);
468 return is_utf8_ascii(tmpbuf);
472 Perl_is_uni_space(pTHX_ U32 c)
474 U8 tmpbuf[UTF8_MAXLEN];
475 uv_to_utf8(tmpbuf, (UV)c);
476 return is_utf8_space(tmpbuf);
480 Perl_is_uni_digit(pTHX_ U32 c)
482 U8 tmpbuf[UTF8_MAXLEN];
483 uv_to_utf8(tmpbuf, (UV)c);
484 return is_utf8_digit(tmpbuf);
488 Perl_is_uni_upper(pTHX_ U32 c)
490 U8 tmpbuf[UTF8_MAXLEN];
491 uv_to_utf8(tmpbuf, (UV)c);
492 return is_utf8_upper(tmpbuf);
496 Perl_is_uni_lower(pTHX_ U32 c)
498 U8 tmpbuf[UTF8_MAXLEN];
499 uv_to_utf8(tmpbuf, (UV)c);
500 return is_utf8_lower(tmpbuf);
504 Perl_is_uni_cntrl(pTHX_ U32 c)
506 U8 tmpbuf[UTF8_MAXLEN];
507 uv_to_utf8(tmpbuf, (UV)c);
508 return is_utf8_cntrl(tmpbuf);
512 Perl_is_uni_graph(pTHX_ U32 c)
514 U8 tmpbuf[UTF8_MAXLEN];
515 uv_to_utf8(tmpbuf, (UV)c);
516 return is_utf8_graph(tmpbuf);
520 Perl_is_uni_print(pTHX_ U32 c)
522 U8 tmpbuf[UTF8_MAXLEN];
523 uv_to_utf8(tmpbuf, (UV)c);
524 return is_utf8_print(tmpbuf);
528 Perl_is_uni_punct(pTHX_ U32 c)
530 U8 tmpbuf[UTF8_MAXLEN];
531 uv_to_utf8(tmpbuf, (UV)c);
532 return is_utf8_punct(tmpbuf);
536 Perl_is_uni_xdigit(pTHX_ U32 c)
538 U8 tmpbuf[UTF8_MAXLEN];
539 uv_to_utf8(tmpbuf, (UV)c);
540 return is_utf8_xdigit(tmpbuf);
544 Perl_to_uni_upper(pTHX_ U32 c)
546 U8 tmpbuf[UTF8_MAXLEN];
547 uv_to_utf8(tmpbuf, (UV)c);
548 return to_utf8_upper(tmpbuf);
552 Perl_to_uni_title(pTHX_ U32 c)
554 U8 tmpbuf[UTF8_MAXLEN];
555 uv_to_utf8(tmpbuf, (UV)c);
556 return to_utf8_title(tmpbuf);
560 Perl_to_uni_lower(pTHX_ U32 c)
562 U8 tmpbuf[UTF8_MAXLEN];
563 uv_to_utf8(tmpbuf, (UV)c);
564 return to_utf8_lower(tmpbuf);
567 /* for now these all assume no locale info available for Unicode > 255 */
570 Perl_is_uni_alnum_lc(pTHX_ U32 c)
572 return is_uni_alnum(c); /* XXX no locale support yet */
576 Perl_is_uni_alnumc_lc(pTHX_ U32 c)
578 return is_uni_alnumc(c); /* XXX no locale support yet */
582 Perl_is_uni_idfirst_lc(pTHX_ U32 c)
584 return is_uni_idfirst(c); /* XXX no locale support yet */
588 Perl_is_uni_alpha_lc(pTHX_ U32 c)
590 return is_uni_alpha(c); /* XXX no locale support yet */
594 Perl_is_uni_ascii_lc(pTHX_ U32 c)
596 return is_uni_ascii(c); /* XXX no locale support yet */
600 Perl_is_uni_space_lc(pTHX_ U32 c)
602 return is_uni_space(c); /* XXX no locale support yet */
606 Perl_is_uni_digit_lc(pTHX_ U32 c)
608 return is_uni_digit(c); /* XXX no locale support yet */
612 Perl_is_uni_upper_lc(pTHX_ U32 c)
614 return is_uni_upper(c); /* XXX no locale support yet */
618 Perl_is_uni_lower_lc(pTHX_ U32 c)
620 return is_uni_lower(c); /* XXX no locale support yet */
624 Perl_is_uni_cntrl_lc(pTHX_ U32 c)
626 return is_uni_cntrl(c); /* XXX no locale support yet */
630 Perl_is_uni_graph_lc(pTHX_ U32 c)
632 return is_uni_graph(c); /* XXX no locale support yet */
636 Perl_is_uni_print_lc(pTHX_ U32 c)
638 return is_uni_print(c); /* XXX no locale support yet */
642 Perl_is_uni_punct_lc(pTHX_ U32 c)
644 return is_uni_punct(c); /* XXX no locale support yet */
648 Perl_is_uni_xdigit_lc(pTHX_ U32 c)
650 return is_uni_xdigit(c); /* XXX no locale support yet */
654 Perl_to_uni_upper_lc(pTHX_ U32 c)
656 return to_uni_upper(c); /* XXX no locale support yet */
660 Perl_to_uni_title_lc(pTHX_ U32 c)
662 return to_uni_title(c); /* XXX no locale support yet */
666 Perl_to_uni_lower_lc(pTHX_ U32 c)
668 return to_uni_lower(c); /* XXX no locale support yet */
672 Perl_is_utf8_alnum(pTHX_ U8 *p)
674 if (!is_utf8_char(p))
677 /* NOTE: "IsWord", not "IsAlnum", since Alnum is a true
678 * descendant of isalnum(3), in other words, it doesn't
679 * contain the '_'. --jhi */
680 PL_utf8_alnum = swash_init("utf8", "IsWord", &PL_sv_undef, 0, 0);
681 return swash_fetch(PL_utf8_alnum, p);
682 /* return *p == '_' || is_utf8_alpha(p) || is_utf8_digit(p); */
683 #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */
685 PL_utf8_alnum = swash_init("utf8", "",
686 sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0);
687 return swash_fetch(PL_utf8_alnum, p);
692 Perl_is_utf8_alnumc(pTHX_ U8 *p)
694 if (!is_utf8_char(p))
697 PL_utf8_alnum = swash_init("utf8", "IsAlnumC", &PL_sv_undef, 0, 0);
698 return swash_fetch(PL_utf8_alnum, p);
699 /* return is_utf8_alpha(p) || is_utf8_digit(p); */
700 #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */
702 PL_utf8_alnum = swash_init("utf8", "",
703 sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0);
704 return swash_fetch(PL_utf8_alnum, p);
709 Perl_is_utf8_idfirst(pTHX_ U8 *p)
711 return *p == '_' || is_utf8_alpha(p);
715 Perl_is_utf8_alpha(pTHX_ U8 *p)
717 if (!is_utf8_char(p))
720 PL_utf8_alpha = swash_init("utf8", "IsAlpha", &PL_sv_undef, 0, 0);
721 return swash_fetch(PL_utf8_alpha, p);
725 Perl_is_utf8_ascii(pTHX_ U8 *p)
727 if (!is_utf8_char(p))
730 PL_utf8_ascii = swash_init("utf8", "IsAscii", &PL_sv_undef, 0, 0);
731 return swash_fetch(PL_utf8_ascii, p);
735 Perl_is_utf8_space(pTHX_ U8 *p)
737 if (!is_utf8_char(p))
740 PL_utf8_space = swash_init("utf8", "IsSpace", &PL_sv_undef, 0, 0);
741 return swash_fetch(PL_utf8_space, p);
745 Perl_is_utf8_digit(pTHX_ U8 *p)
747 if (!is_utf8_char(p))
750 PL_utf8_digit = swash_init("utf8", "IsDigit", &PL_sv_undef, 0, 0);
751 return swash_fetch(PL_utf8_digit, p);
755 Perl_is_utf8_upper(pTHX_ U8 *p)
757 if (!is_utf8_char(p))
760 PL_utf8_upper = swash_init("utf8", "IsUpper", &PL_sv_undef, 0, 0);
761 return swash_fetch(PL_utf8_upper, p);
765 Perl_is_utf8_lower(pTHX_ U8 *p)
767 if (!is_utf8_char(p))
770 PL_utf8_lower = swash_init("utf8", "IsLower", &PL_sv_undef, 0, 0);
771 return swash_fetch(PL_utf8_lower, p);
775 Perl_is_utf8_cntrl(pTHX_ U8 *p)
777 if (!is_utf8_char(p))
780 PL_utf8_cntrl = swash_init("utf8", "IsCntrl", &PL_sv_undef, 0, 0);
781 return swash_fetch(PL_utf8_cntrl, p);
785 Perl_is_utf8_graph(pTHX_ U8 *p)
787 if (!is_utf8_char(p))
790 PL_utf8_graph = swash_init("utf8", "IsGraph", &PL_sv_undef, 0, 0);
791 return swash_fetch(PL_utf8_graph, p);
795 Perl_is_utf8_print(pTHX_ U8 *p)
797 if (!is_utf8_char(p))
800 PL_utf8_print = swash_init("utf8", "IsPrint", &PL_sv_undef, 0, 0);
801 return swash_fetch(PL_utf8_print, p);
805 Perl_is_utf8_punct(pTHX_ U8 *p)
807 if (!is_utf8_char(p))
810 PL_utf8_punct = swash_init("utf8", "IsPunct", &PL_sv_undef, 0, 0);
811 return swash_fetch(PL_utf8_punct, p);
815 Perl_is_utf8_xdigit(pTHX_ U8 *p)
817 if (!is_utf8_char(p))
820 PL_utf8_xdigit = swash_init("utf8", "IsXDigit", &PL_sv_undef, 0, 0);
821 return swash_fetch(PL_utf8_xdigit, p);
825 Perl_is_utf8_mark(pTHX_ U8 *p)
827 if (!is_utf8_char(p))
830 PL_utf8_mark = swash_init("utf8", "IsM", &PL_sv_undef, 0, 0);
831 return swash_fetch(PL_utf8_mark, p);
835 Perl_to_utf8_upper(pTHX_ U8 *p)
839 if (!PL_utf8_toupper)
840 PL_utf8_toupper = swash_init("utf8", "ToUpper", &PL_sv_undef, 4, 0);
841 uv = swash_fetch(PL_utf8_toupper, p);
842 return uv ? uv : utf8_to_uv(p,0,0);
846 Perl_to_utf8_title(pTHX_ U8 *p)
850 if (!PL_utf8_totitle)
851 PL_utf8_totitle = swash_init("utf8", "ToTitle", &PL_sv_undef, 4, 0);
852 uv = swash_fetch(PL_utf8_totitle, p);
853 return uv ? uv : utf8_to_uv(p,0,0);
857 Perl_to_utf8_lower(pTHX_ U8 *p)
861 if (!PL_utf8_tolower)
862 PL_utf8_tolower = swash_init("utf8", "ToLower", &PL_sv_undef, 4, 0);
863 uv = swash_fetch(PL_utf8_tolower, p);
864 return uv ? uv : utf8_to_uv(p,0,0);
867 /* a "swash" is a swatch hash */
870 Perl_swash_init(pTHX_ char* pkg, char* name, SV *listsv, I32 minbits, I32 none)
876 if (!gv_stashpv(pkg, 0)) { /* demand load utf8 */
878 Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, newSVpv(pkg,0), Nullsv);
882 PUSHSTACKi(PERLSI_MAGIC);
885 PUSHs(sv_2mortal(newSVpvn(pkg, strlen(pkg))));
886 PUSHs(sv_2mortal(newSVpvn(name, strlen(name))));
888 PUSHs(sv_2mortal(newSViv(minbits)));
889 PUSHs(sv_2mortal(newSViv(none)));
895 if (PL_curcop == &PL_compiling) /* XXX ought to be handled by lex_start */
896 strncpy(tmpbuf, PL_tokenbuf, sizeof tmpbuf);
897 if (call_method("SWASHNEW", G_SCALAR))
898 retval = newSVsv(*PL_stack_sp--);
900 retval = &PL_sv_undef;
903 if (PL_curcop == &PL_compiling) {
904 strncpy(PL_tokenbuf, tmpbuf, sizeof tmpbuf);
905 PL_curcop->op_private = PL_hints;
907 if (!SvROK(retval) || SvTYPE(SvRV(retval)) != SVt_PVHV)
908 Perl_croak(aTHX_ "SWASHNEW didn't return an HV ref");
913 Perl_swash_fetch(pTHX_ SV *sv, U8 *ptr)
915 HV* hv = (HV*)SvRV(sv);
916 U32 klen = UTF8SKIP(ptr) - 1;
917 U32 off = ptr[klen] & 127; /* NB: 64 bit always 0 when len > 1 */
919 STRLEN needents = (klen ? 64 : 128);
925 * This single-entry cache saves about 1/3 of the utf8 overhead in test
926 * suite. (That is, only 7-8% overall over just a hash cache. Still,
927 * it's nothing to sniff at.) Pity we usually come through at least
928 * two function calls to get here...
930 * NB: this code assumes that swatches are never modified, once generated!
933 if (hv == PL_last_swash_hv &&
934 klen == PL_last_swash_klen &&
935 (!klen || memEQ((char *)ptr,(char *)PL_last_swash_key,klen)) )
937 tmps = PL_last_swash_tmps;
938 slen = PL_last_swash_slen;
941 /* Try our second-level swatch cache, kept in a hash. */
942 SV** svp = hv_fetch(hv, (char*)ptr, klen, FALSE);
944 /* If not cached, generate it via utf8::SWASHGET */
945 if (!svp || !SvPOK(*svp) || !(tmps = (U8*)SvPV(*svp, slen))) {
950 PUSHSTACKi(PERLSI_MAGIC);
954 PUSHs(sv_2mortal(newSViv(utf8_to_uv(ptr, 0, 0) & ~(needents - 1))));
955 PUSHs(sv_2mortal(newSViv(needents)));
957 if (call_method("SWASHGET", G_SCALAR))
958 retval = newSVsv(*PL_stack_sp--);
960 retval = &PL_sv_undef;
964 if (PL_curcop == &PL_compiling)
965 PL_curcop->op_private = PL_hints;
967 svp = hv_store(hv, (char*)ptr, klen, retval, 0);
969 if (!svp || !(tmps = (U8*)SvPV(*svp, slen)) || slen < 8)
970 Perl_croak(aTHX_ "SWASHGET didn't return result of proper length");
973 PL_last_swash_hv = hv;
974 PL_last_swash_klen = klen;
975 PL_last_swash_tmps = tmps;
976 PL_last_swash_slen = slen;
978 Copy(ptr, PL_last_swash_key, klen, U8);
981 switch ((slen << 3) / needents) {
983 bit = 1 << (off & 7);
985 return (tmps[off] & bit) != 0;
990 return (tmps[off] << 8) + tmps[off + 1] ;
993 return (tmps[off] << 24) + (tmps[off+1] << 16) + (tmps[off+2] << 8) + tmps[off + 3] ;
995 Perl_croak(aTHX_ "panic: swash_fetch");