From 0dbf3761f6b98e5c16c9bfa0306ae5d3257d081f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= Date: Tue, 12 Aug 2014 21:06:31 +0200 Subject: Imported Upstream version 5.9.5 --- enc/sjis.c | 318 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 318 insertions(+) create mode 100644 enc/sjis.c (limited to 'enc/sjis.c') diff --git a/enc/sjis.c b/enc/sjis.c new file mode 100644 index 0000000..7a54c9f --- /dev/null +++ b/enc/sjis.c @@ -0,0 +1,318 @@ +/********************************************************************** + sjis.c - Oniguruma (regular expression library) +**********************************************************************/ +/*- + * Copyright (c) 2002-2008 K.Kosako + * 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 "regint.h" + +static const int EncLen_SJIS[] = { + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1 +}; + +static const char SJIS_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, 0, 0, 0 +}; + +#define SJIS_ISMB_FIRST(byte) (EncLen_SJIS[byte] > 1) +#define SJIS_ISMB_TRAIL(byte) SJIS_CAN_BE_TRAIL_TABLE[(byte)] + +static int +mbc_enc_len(const UChar* p) +{ + return EncLen_SJIS[*p]; +} + +static int +code_to_mbclen(OnigCodePoint code) +{ + if (code < 256) { + if (EncLen_SJIS[(int )code] == 1) + return 1; + else + return 0; + } + else if (code <= 0xffff) { + return 2; + } + else + return ONIGERR_INVALID_CODE_POINT_VALUE; +} + +static OnigCodePoint +mbc_to_code(const UChar* p, const UChar* end) +{ + int c, i, len; + OnigCodePoint n; + + len = enclen(ONIG_ENCODING_SJIS, p); + c = *p++; + n = c; + if (len == 1) return n; + + for (i = 1; i < len; i++) { + if (p >= end) break; + c = *p++; + n <<= 8; n += c; + } + return n; +} + +static int +code_to_mbc(OnigCodePoint code, UChar *buf) +{ + UChar *p = buf; + + if ((code & 0xff00) != 0) *p++ = (UChar )(((code >> 8) & 0xff)); + *p++ = (UChar )(code & 0xff); + +#if 0 + if (enclen(ONIG_ENCODING_SJIS, buf) != (p - buf)) + return REGERR_INVALID_CODE_POINT_VALUE; +#endif + return p - buf; +} + +static int +mbc_case_fold(OnigCaseFoldType flag ARG_UNUSED, + const UChar** pp, const UChar* end ARG_UNUSED, UChar* lower) +{ + const UChar* p = *pp; + + if (ONIGENC_IS_MBC_ASCII(p)) { + *lower = ONIGENC_ASCII_CODE_TO_LOWER_CASE(*p); + (*pp)++; + return 1; + } + else { + int i; + int len = enclen(ONIG_ENCODING_SJIS, p); + + for (i = 0; i < len; i++) { + *lower++ = *p++; + } + (*pp) += len; + return len; /* return byte length of converted char to lower */ + } +} + +#if 0 +static int +is_mbc_ambiguous(OnigCaseFoldType flag, + const UChar** pp, const UChar* end) +{ + return onigenc_mbn_is_mbc_ambiguous(ONIG_ENCODING_SJIS, flag, pp, end); + +} +#endif + +#if 0 +static int +is_code_ctype(OnigCodePoint code, unsigned int ctype) +{ + if (code < 128) + return ONIGENC_IS_ASCII_CODE_CTYPE(code, ctype); + else { + if (CTYPE_IS_WORD_GRAPH_PRINT(ctype)) { + return (code_to_mbclen(code) > 1 ? TRUE : FALSE); + } + } + + return FALSE; +} +#endif + +static UChar* +left_adjust_char_head(const UChar* start, const UChar* s) +{ + const UChar *p; + int len; + + if (s <= start) return (UChar* )s; + p = s; + + if (SJIS_ISMB_TRAIL(*p)) { + while (p > start) { + if (! SJIS_ISMB_FIRST(*--p)) { + p++; + break; + } + } + } + len = enclen(ONIG_ENCODING_SJIS, p); + if (p + len > s) return (UChar* )p; + p += len; + return (UChar* )(p + ((s - p) & ~1)); +} + +static int +is_allowed_reverse_match(const UChar* s, const UChar* end ARG_UNUSED) +{ + const UChar c = *s; + return (SJIS_ISMB_TRAIL(c) ? FALSE : TRUE); +} + + +static int PropertyInited = 0; +static const OnigCodePoint** PropertyList; +static int PropertyListNum; +static int PropertyListSize; +static hash_table_type* PropertyNameTable; + +static const OnigCodePoint CR_Hiragana[] = { + 1, + 0x829f, 0x82f1 +}; /* CR_Hiragana */ + +static const OnigCodePoint CR_Katakana[] = { + 4, + 0x00a6, 0x00af, + 0x00b1, 0x00dd, + 0x8340, 0x837e, + 0x8380, 0x8396, +}; /* CR_Katakana */ + +static int +init_property_list(void) +{ + int r; + + PROPERTY_LIST_ADD_PROP("Hiragana", CR_Hiragana); + PROPERTY_LIST_ADD_PROP("Katakana", CR_Katakana); + PropertyInited = 1; + + end: + return r; +} + +static int +property_name_to_ctype(OnigEncoding enc, UChar* p, UChar* end) +{ + hash_data_type ctype; + + PROPERTY_LIST_INIT_CHECK; + + if (onig_st_lookup_strend(PropertyNameTable, p, end, &ctype) == 0) { + return onigenc_minimum_property_name_to_ctype(enc, p, end); + } + + return (int )ctype; +} + +static int +is_code_ctype(OnigCodePoint code, unsigned int ctype) +{ + if (ctype <= ONIGENC_MAX_STD_CTYPE) { + if (code < 128) + return ONIGENC_IS_ASCII_CODE_CTYPE(code, ctype); + else { + if (CTYPE_IS_WORD_GRAPH_PRINT(ctype)) { + return (code_to_mbclen(code) > 1 ? TRUE : FALSE); + } + } + } + else { + PROPERTY_LIST_INIT_CHECK; + + ctype -= (ONIGENC_MAX_STD_CTYPE + 1); + if (ctype >= (unsigned int )PropertyListNum) + return ONIGERR_TYPE_BUG; + + return onig_is_in_code_range((UChar* )PropertyList[ctype], code); + } + + return FALSE; +} + +static int +get_ctype_code_range(OnigCtype ctype, OnigCodePoint* sb_out, + const OnigCodePoint* ranges[]) +{ + if (ctype <= ONIGENC_MAX_STD_CTYPE) { + return ONIG_NO_SUPPORT_CONFIG; + } + else { + *sb_out = 0x80; + + PROPERTY_LIST_INIT_CHECK; + + ctype -= (ONIGENC_MAX_STD_CTYPE + 1); + if (ctype >= (OnigCtype )PropertyListNum) + return ONIGERR_TYPE_BUG; + + *ranges = PropertyList[ctype]; + return 0; + } +} + +OnigEncodingType OnigEncodingSJIS = { + mbc_enc_len, + "Shift_JIS", /* name */ + 2, /* max byte length */ + 1, /* min byte length */ + onigenc_is_mbc_newline_0x0a, + mbc_to_code, + code_to_mbclen, + code_to_mbc, + mbc_case_fold, + onigenc_ascii_apply_all_case_fold, + onigenc_ascii_get_case_fold_codes_by_str, + property_name_to_ctype, + is_code_ctype, + get_ctype_code_range, + left_adjust_char_head, + is_allowed_reverse_match +}; -- cgit v1.2.3