From 5e01a4852b31d537307994248869caf38b4023cc Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= Date: Tue, 10 May 2016 05:12:17 +0200 Subject: Imported Upstream version 6.0.0 --- src/euc_jp.c | 273 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 273 insertions(+) create mode 100644 src/euc_jp.c (limited to 'src/euc_jp.c') diff --git a/src/euc_jp.c b/src/euc_jp.c new file mode 100644 index 0000000..17f53e7 --- /dev/null +++ b/src/euc_jp.c @@ -0,0 +1,273 @@ +/********************************************************************** + euc_jp.c - Oniguruma (regular expression library) +**********************************************************************/ +/*- + * Copyright (c) 2002-2016 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" + +#define eucjp_islead(c) ((UChar )((c) - 0xa1) > 0xfe - 0xa1) + +static const int EncLen_EUCJP[] = { + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 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, 3, + 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 +mbc_enc_len(const UChar* p) +{ + return EncLen_EUCJP[*p]; +} + +static OnigCodePoint +mbc_to_code(const UChar* p, const UChar* end) +{ + int c, i, len; + OnigCodePoint n; + + len = enclen(ONIG_ENCODING_EUC_JP, p); + n = (OnigCodePoint )*p++; + 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_mbclen(OnigCodePoint code) +{ + if (ONIGENC_IS_CODE_ASCII(code)) return 1; + else if ((code & 0xff0000) != 0) return 3; + else if ((code & 0xff00) != 0) return 2; + else + return ONIGERR_INVALID_CODE_POINT_VALUE; +} + +#if 0 +static int +code_to_mbc_first(OnigCodePoint code) +{ + int first; + + if ((code & 0xff0000) != 0) { + first = (code >> 16) & 0xff; + } + else if ((code & 0xff00) != 0) { + first = (code >> 8) & 0xff; + } + else { + return (int )code; + } + return first; +} +#endif + +static int +code_to_mbc(OnigCodePoint code, UChar *buf) +{ + UChar *p = buf; + + if ((code & 0xff0000) != 0) *p++ = (UChar )(((code >> 16) & 0xff)); + if ((code & 0xff00) != 0) *p++ = (UChar )(((code >> 8) & 0xff)); + *p++ = (UChar )(code & 0xff); + +#if 1 + if (enclen(ONIG_ENCODING_EUC_JP, buf) != (p - buf)) + return ONIGERR_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) +{ + int len; + const UChar* p = *pp; + + if (ONIGENC_IS_MBC_ASCII(p)) { + *lower = ONIGENC_ASCII_CODE_TO_LOWER_CASE(*p); + (*pp)++; + return 1; + } + else { + int i; + + len = enclen(ONIG_ENCODING_EUC_JP, p); + for (i = 0; i < len; i++) { + *lower++ = *p++; + } + (*pp) += len; + return len; /* return byte length of converted char to lower */ + } +} + +static UChar* +left_adjust_char_head(const UChar* start, const UChar* s) +{ + /* In this encoding + mb-trail bytes doesn't mix with single bytes. + */ + const UChar *p; + int len; + + if (s <= start) return (UChar* )s; + p = s; + + while (!eucjp_islead(*p) && p > start) p--; + len = enclen(ONIG_ENCODING_EUC_JP, 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; + if (c <= 0x7e || c == 0x8e || c == 0x8f) + return TRUE; + else + return FALSE; +} + + +static const OnigCodePoint CR_Hiragana[] = { + 1, + 0xa4a1, 0xa4f3 +}; /* CR_Hiragana */ + +static const OnigCodePoint CR_Katakana[] = { + 3, + 0xa5a1, 0xa5f6, + 0xaaa6, 0xaaaf, + 0xaab1, 0xaadd +}; /* CR_Katakana */ + +static const OnigCodePoint* PropertyList[] = { + CR_Hiragana, + CR_Katakana +}; + +static int +property_name_to_ctype(OnigEncoding enc, UChar* p, UChar* end) +{ + struct PropertyNameCtype* pc; + int len = end - p; + char q[32]; + + if (len < sizeof(q) - 1) { + xmemcpy(q, p, (size_t )len); + q[len] = '\0'; + pc = euc_jp_lookup_property_name(q, len); + if (pc != 0) + return pc->ctype; + } + + return ONIGERR_INVALID_CHAR_PROPERTY_NAME; +} + +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 { + ctype -= (ONIGENC_MAX_STD_CTYPE + 1); + if (ctype >= (unsigned int )(sizeof(PropertyList)/sizeof(PropertyList[0]))) + 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; + + ctype -= (ONIGENC_MAX_STD_CTYPE + 1); + if (ctype >= (OnigCtype )sizeof(PropertyList)/sizeof(PropertyList[0])) + return ONIGERR_TYPE_BUG; + + *ranges = PropertyList[ctype]; + return 0; + } +} + + +OnigEncodingType OnigEncodingEUC_JP = { + mbc_enc_len, + "EUC-JP", /* name */ + 3, /* max enc length */ + 1, /* min enc 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, + NULL, /* init */ + NULL /* is_initialized */ +}; -- cgit v1.2.3