diff options
author | naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-02-17 03:21:20 +0000 |
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committer | naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-02-17 03:21:20 +0000 |
commit | 8984fa674290c17b62c7cf5cf0dd266d297fc14b (patch) | |
tree | 2a4bee0a1c6734183c898f508854551d1ee1d60c /enc/cp949.c | |
parent | 0f4199fb56ec12dae32a6fa099f15aaa7e55d10f (diff) |
* enc/{euc_jp.c,gbk.c,iso_8859_1.c,iso_8859_11.c,iso_8859_13.c,
iso_8859_2.c,iso_8859_6.c,iso_8859_7.c,iso_8859_8.c,iso_8859_9.c,
shift_jis.c,windows_1251.c}: add document about encodings.
* enc/cp949.c: divided into new file.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15516 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'enc/cp949.c')
-rw-r--r-- | enc/cp949.c | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/enc/cp949.c b/enc/cp949.c new file mode 100644 index 0000000000..0046460625 --- /dev/null +++ b/enc/cp949.c @@ -0,0 +1,219 @@ +/********************************************************************** + cp949.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_CP949[] = { + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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 const char CP949_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 CP949_ISMB_FIRST(byte) (EncLen_CP949[byte] > 1) +#define CP949_ISMB_TRAIL(byte) CP949_CAN_BE_TRAIL_TABLE[(byte)] + +typedef enum { FAILURE = -2, ACCEPT = -1, S0 = 0, S1 } state_t; +#define A ACCEPT +#define F FAILURE +static const signed char trans[][0x100] = { + { /* S0 0 1 2 3 4 5 6 7 8 9 a b c d e f */ + /* 0 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, + /* 1 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, + /* 2 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, + /* 3 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, + /* 4 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, + /* 5 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, + /* 6 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, + /* 7 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, + /* 8 */ A, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + /* 9 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + /* a */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + /* b */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + /* c */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + /* d */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + /* e */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + /* f */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, F + }, + { /* S1 0 1 2 3 4 5 6 7 8 9 a b c d e f */ + /* 0 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, + /* 1 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, + /* 2 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, + /* 3 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, + /* 4 */ F, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, + /* 5 */ A, A, A, A, A, A, A, A, A, A, A, F, F, F, F, F, + /* 6 */ F, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, + /* 7 */ A, A, A, A, A, A, A, A, A, A, A, F, F, F, F, F, + /* 8 */ F, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, + /* 9 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, + /* a */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, + /* b */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, + /* c */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, + /* d */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, + /* e */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, + /* f */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, F + } +}; +#undef A +#undef F + +static int +cp949_mbc_enc_len(const UChar* p, const UChar* e, OnigEncoding enc ARG_UNUSED) +{ + int firstbyte = *p++; + state_t s = trans[0][firstbyte]; +#define RETURN(n) \ + return s == ACCEPT ? ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND(n) : \ + ONIGENC_CONSTRUCT_MBCLEN_INVALID() + if (s < 0) RETURN(1); + if (p == e) return ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE(EncLen_CP949[firstbyte]-1); + s = trans[s][*p++]; + RETURN(2); +#undef RETURN +} + +static OnigCodePoint +cp949_mbc_to_code(const UChar* p, const UChar* end, OnigEncoding enc) +{ + return onigenc_mbn_mbc_to_code(enc, p, end); +} + +static int +cp949_code_to_mbc(OnigCodePoint code, UChar *buf, OnigEncoding enc) +{ + return onigenc_mb2_code_to_mbc(enc, code, buf); +} + +static int +cp949_mbc_case_fold(OnigCaseFoldType flag, const UChar** pp, const UChar* end, + UChar* lower, OnigEncoding enc) +{ + return onigenc_mbn_mbc_case_fold(enc, flag, + pp, end, lower); +} + +#if 0 +static int +cp949_is_mbc_ambiguous(OnigCaseFoldType flag, + const UChar** pp, const UChar* end, OnigEncoding enc) +{ + return onigenc_mbn_is_mbc_ambiguous(enc, flag, pp, end); +} +#endif + +static int +cp949_is_code_ctype(OnigCodePoint code, unsigned int ctype, OnigEncoding enc) +{ + return onigenc_mb2_is_code_ctype(enc, code, ctype); +} + +static UChar* +cp949_left_adjust_char_head(const UChar* start, const UChar* s, OnigEncoding enc) +{ + const UChar *p; + int len; + + if (s <= start) return (UChar* )s; + p = s; + + if (CP949_ISMB_TRAIL(*p)) { + while (p > start) { + if (! CP949_ISMB_FIRST(*--p)) { + p++; + break; + } + } + } + len = enclen(enc, p, s); + if (p + len > s) return (UChar* )p; + p += len; + return (UChar* )(p + ((s - p) & ~1)); +} + +static int +cp949_is_allowed_reverse_match(const UChar* s, const UChar* end ARG_UNUSED, OnigEncoding enc ARG_UNUSED) +{ + const UChar c = *s; + return (CP949_ISMB_TRAIL(c) ? FALSE : TRUE); +} + +OnigEncodingDefine(cp949, CP949) = { + cp949_mbc_enc_len, + "CP949", /* name */ + 2, /* max enc length */ + 1, /* min enc length */ + onigenc_is_mbc_newline_0x0a, + cp949_mbc_to_code, + onigenc_mb2_code_to_mbclen, + cp949_code_to_mbc, + cp949_mbc_case_fold, + onigenc_ascii_apply_all_case_fold, + onigenc_ascii_get_case_fold_codes_by_str, + onigenc_minimum_property_name_to_ctype, + cp949_is_code_ctype, + onigenc_not_support_get_ctype_code_range, + cp949_left_adjust_char_head, + cp949_is_allowed_reverse_match +}; +/* + * Name: CP949 + * Link: http://www.microsoft.com/globaldev/reference/dbcs/949.mspx + * Link: http://en.wikipedia.org/wiki/EUC-KR#EUC-KR + */ |