diff options
author | Jörg Frings-Fürst <debian@jff-webhosting.net> | 2014-08-12 21:06:31 +0200 |
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committer | Jörg Frings-Fürst <debian@jff-webhosting.net> | 2014-08-12 21:06:31 +0200 |
commit | 0dbf3761f6b98e5c16c9bfa0306ae5d3257d081f (patch) | |
tree | b122da5e29b81eb5489734f477afb645422980d0 /enc/big5.c |
Imported Upstream version 5.9.5upstream/5.9.5
Diffstat (limited to 'enc/big5.c')
-rw-r--r-- | enc/big5.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/enc/big5.c b/enc/big5.c new file mode 100644 index 0000000..ca1e01b --- /dev/null +++ b/enc/big5.c @@ -0,0 +1,162 @@ +/********************************************************************** + big5.c - Oniguruma (regular expression library) +**********************************************************************/ +/*- + * Copyright (c) 2002-2007 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 const int EncLen_BIG5[] = { + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1 +}; + +static int +big5_mbc_enc_len(const UChar* p) +{ + return EncLen_BIG5[*p]; +} + +static OnigCodePoint +big5_mbc_to_code(const UChar* p, const UChar* end) +{ + return onigenc_mbn_mbc_to_code(ONIG_ENCODING_BIG5, p, end); +} + +static int +big5_code_to_mbc(OnigCodePoint code, UChar *buf) +{ + return onigenc_mb2_code_to_mbc(ONIG_ENCODING_BIG5, code, buf); +} + +static int +big5_mbc_case_fold(OnigCaseFoldType flag, const UChar** pp, const UChar* end, + UChar* lower) +{ + return onigenc_mbn_mbc_case_fold(ONIG_ENCODING_BIG5, flag, + pp, end, lower); +} + +#if 0 +static int +big5_is_mbc_ambiguous(OnigCaseFoldType flag, + const UChar** pp, const UChar* end) +{ + return onigenc_mbn_is_mbc_ambiguous(ONIG_ENCODING_BIG5, flag, pp, end); +} +#endif + +static int +big5_is_code_ctype(OnigCodePoint code, unsigned int ctype) +{ + return onigenc_mb2_is_code_ctype(ONIG_ENCODING_BIG5, code, ctype); +} + +static const char BIG5_CAN_BE_TRAIL_TABLE[256] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0 +}; + +#define BIG5_ISMB_FIRST(byte) (EncLen_BIG5[byte] > 1) +#define BIG5_ISMB_TRAIL(byte) BIG5_CAN_BE_TRAIL_TABLE[(byte)] + +static UChar* +big5_left_adjust_char_head(const UChar* start, const UChar* s) +{ + const UChar *p; + int len; + + if (s <= start) return (UChar* )s; + p = s; + + if (BIG5_ISMB_TRAIL(*p)) { + while (p > start) { + if (! BIG5_ISMB_FIRST(*--p)) { + p++; + break; + } + } + } + len = enclen(ONIG_ENCODING_BIG5, p); + if (p + len > s) return (UChar* )p; + p += len; + return (UChar* )(p + ((s - p) & ~1)); +} + +static int +big5_is_allowed_reverse_match(const UChar* s, const UChar* end ARG_UNUSED) +{ + const UChar c = *s; + + return (BIG5_ISMB_TRAIL(c) ? FALSE : TRUE); +} + +OnigEncodingType OnigEncodingBIG5 = { + big5_mbc_enc_len, + "Big5", /* name */ + 2, /* max enc length */ + 1, /* min enc length */ + onigenc_is_mbc_newline_0x0a, + big5_mbc_to_code, + onigenc_mb2_code_to_mbclen, + big5_code_to_mbc, + big5_mbc_case_fold, + onigenc_ascii_apply_all_case_fold, + onigenc_ascii_get_case_fold_codes_by_str, + onigenc_minimum_property_name_to_ctype, + big5_is_code_ctype, + onigenc_not_support_get_ctype_code_range, + big5_left_adjust_char_head, + big5_is_allowed_reverse_match +}; |