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Diffstat (limited to 'src/euc_tw.c')
| -rw-r--r-- | src/euc_tw.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/src/euc_tw.c b/src/euc_tw.c new file mode 100644 index 0000000..f757961 --- /dev/null +++ b/src/euc_tw.c @@ -0,0 +1,131 @@ +/********************************************************************** + euc_tw.c - Oniguruma (regular expression library) +**********************************************************************/ +/*- + * Copyright (c) 2002-2016 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_EUCTW[] = { + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 4, 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 +euctw_mbc_enc_len(const UChar* p) +{ + return EncLen_EUCTW[*p]; +} + +static OnigCodePoint +euctw_mbc_to_code(const UChar* p, const UChar* end) +{ + return onigenc_mbn_mbc_to_code(ONIG_ENCODING_EUC_TW, p, end); +} + +static int +euctw_code_to_mbc(OnigCodePoint code, UChar *buf) +{ + return onigenc_mb4_code_to_mbc(ONIG_ENCODING_EUC_TW, code, buf); +} + +static int +euctw_mbc_case_fold(OnigCaseFoldType flag, const UChar** pp, const UChar* end, + UChar* lower) +{ + return onigenc_mbn_mbc_case_fold(ONIG_ENCODING_EUC_TW, flag, + pp, end, lower); +} + +static int +euctw_is_code_ctype(OnigCodePoint code, unsigned int ctype) +{ + return onigenc_mb4_is_code_ctype(ONIG_ENCODING_EUC_TW, code, ctype); +} + +#define euctw_islead(c) ((UChar )((c) - 0xa1) > 0xfe - 0xa1) + +static UChar* +euctw_left_adjust_char_head(const UChar* start, const UChar* s) +{ + /* Assumed in this encoding, + mb-trail bytes don't mix with single bytes. + */ + const UChar *p; + int len; + + if (s <= start) return (UChar* )s; + p = s; + + while (!euctw_islead(*p) && p > start) p--; + len = enclen(ONIG_ENCODING_EUC_TW, p); + if (p + len > s) return (UChar* )p; + p += len; + return (UChar* )(p + ((s - p) & ~1)); +} + +static int +euctw_is_allowed_reverse_match(const UChar* s, const UChar* end ARG_UNUSED) +{ + const UChar c = *s; + if (c <= 0x7e) return TRUE; + else return FALSE; +} + +OnigEncodingType OnigEncodingEUC_TW = { + euctw_mbc_enc_len, + "EUC-TW", /* name */ + 4, /* max enc length */ + 1, /* min enc length */ + onigenc_is_mbc_newline_0x0a, + euctw_mbc_to_code, + onigenc_mb4_code_to_mbclen, + euctw_code_to_mbc, + euctw_mbc_case_fold, + onigenc_ascii_apply_all_case_fold, + onigenc_ascii_get_case_fold_codes_by_str, + onigenc_minimum_property_name_to_ctype, + euctw_is_code_ctype, + onigenc_not_support_get_ctype_code_range, + euctw_left_adjust_char_head, + euctw_is_allowed_reverse_match, + NULL, /* init */ + NULL /* is_initialized */ +}; |