diff options
Diffstat (limited to 'ext/mbstring/oniguruma/enc/utf32_be.c')
| -rw-r--r-- | ext/mbstring/oniguruma/enc/utf32_be.c | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/ext/mbstring/oniguruma/enc/utf32_be.c b/ext/mbstring/oniguruma/enc/utf32_be.c new file mode 100644 index 0000000..75133ca --- /dev/null +++ b/ext/mbstring/oniguruma/enc/utf32_be.c @@ -0,0 +1,187 @@ +/********************************************************************** + utf32_be.c - Oniguruma (regular expression library) +**********************************************************************/ +/*- + * Copyright (c) 2002-2006 K.Kosako <sndgk393 AT ybb DOT ne DOT jp> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "regenc.h" + +static int +utf32be_mbc_enc_len(const UChar* p) +{ + return 4; +} + +static int +utf32be_is_mbc_newline(const UChar* p, const UChar* end) +{ + if (p + 3 < end) { + if (*(p+3) == 0x0a && *(p+2) == 0 && *(p+1) == 0 && *p == 0) + return 1; +#ifdef USE_UNICODE_ALL_LINE_TERMINATORS + if ((*(p+3) == 0x0d || *(p+3) == 0x85) + && *(p+2) == 0 && *(p+1) == 0 && *p == 0x00) + return 1; + if (*(p+2) == 0x20 && (*(p+3) == 0x29 || *(p+3) == 0x28) + && *(p+1) == 0 && *p == 0) + return 1; +#endif + } + return 0; +} + +static OnigCodePoint +utf32be_mbc_to_code(const UChar* p, const UChar* end) +{ + return (OnigCodePoint )(((p[0] * 256 + p[1]) * 256 + p[2]) * 256 + p[3]); +} + +static int +utf32be_code_to_mbclen(OnigCodePoint code) +{ + return 4; +} + +static int +utf32be_code_to_mbc(OnigCodePoint code, UChar *buf) +{ + UChar* p = buf; + + *p++ = (UChar )((code & 0xff000000) >>24); + *p++ = (UChar )((code & 0xff0000) >>16); + *p++ = (UChar )((code & 0xff00) >> 8); + *p++ = (UChar ) (code & 0xff); + return 4; +} + +static int +utf32be_mbc_to_normalize(OnigAmbigType flag, const UChar** pp, const UChar* end, + UChar* lower) +{ + const UChar* p = *pp; + + if (*(p+2) == 0 && *(p+1) == 0 && *p == 0) { + p += 3; + *lower++ = '\0'; + *lower++ = '\0'; + *lower++ = '\0'; + if (((flag & ONIGENC_AMBIGUOUS_MATCH_ASCII_CASE) != 0 && + ONIGENC_IS_MBC_ASCII(p)) || + ((flag & ONIGENC_AMBIGUOUS_MATCH_NONASCII_CASE) != 0 && + !ONIGENC_IS_MBC_ASCII(p))) { + *lower = ONIGENC_ISO_8859_1_TO_LOWER_CASE(*p); + } + else { + *lower = *p; + } + + (*pp) += 4; + return 4; /* return byte length of converted char to lower */ + } + else { + int len = 4; + if (lower != p) { + int i; + for (i = 0; i < len; i++) { + *lower++ = *p++; + } + } + (*pp) += len; + return len; /* return byte length of converted char to lower */ + } +} + +static int +utf32be_is_mbc_ambiguous(OnigAmbigType flag, const UChar** pp, const UChar* end) +{ + const UChar* p = *pp; + + (*pp) += 4; + + if (*(p+2) == 0 && *(p+1) == 0 && *p == 0) { + int c, v; + + p += 3; + if (((flag & ONIGENC_AMBIGUOUS_MATCH_ASCII_CASE) != 0 && + ONIGENC_IS_MBC_ASCII(p)) || + ((flag & ONIGENC_AMBIGUOUS_MATCH_NONASCII_CASE) != 0 && + !ONIGENC_IS_MBC_ASCII(p))) { + c = *p; + v = ONIGENC_IS_UNICODE_ISO_8859_1_CTYPE(c, + (ONIGENC_CTYPE_UPPER | ONIGENC_CTYPE_LOWER)); + if ((v | ONIGENC_CTYPE_LOWER) != 0) { + /* 0xaa, 0xb5, 0xba are lower case letter, but can't convert. */ + if (c >= 0xaa && c <= 0xba) + return FALSE; + else + return TRUE; + } + return (v != 0 ? TRUE : FALSE); + } + } + + return FALSE; +} + +static UChar* +utf32be_left_adjust_char_head(const UChar* start, const UChar* s) +{ + int rem; + + if (s <= start) return (UChar* )s; + + rem = (s - start) % 4; + return (UChar* )(s - rem); +} + +OnigEncodingType OnigEncodingUTF32_BE = { + utf32be_mbc_enc_len, + "UTF-32BE", /* name */ + 4, /* max byte length */ + 4, /* min byte length */ + (ONIGENC_AMBIGUOUS_MATCH_ASCII_CASE | + ONIGENC_AMBIGUOUS_MATCH_NONASCII_CASE ), + { + (OnigCodePoint )'\\' /* esc */ + , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* anychar '.' */ + , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* anytime '*' */ + , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* zero or one time '?' */ + , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* one or more time '+' */ + , (OnigCodePoint )ONIG_INEFFECTIVE_META_CHAR /* anychar anytime */ + }, + utf32be_is_mbc_newline, + utf32be_mbc_to_code, + utf32be_code_to_mbclen, + utf32be_code_to_mbc, + utf32be_mbc_to_normalize, + utf32be_is_mbc_ambiguous, + onigenc_iso_8859_1_get_all_pair_ambig_codes, + onigenc_ess_tsett_get_all_comp_ambig_codes, + onigenc_unicode_is_code_ctype, + onigenc_unicode_get_ctype_code_range, + utf32be_left_adjust_char_head, + onigenc_always_false_is_allowed_reverse_match +}; |