diff options
author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2007-10-10 21:35:45 +0000 |
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committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2007-10-10 21:35:45 +0000 |
commit | 72483cdcca360eda40e9fcad298d090658f975b9 (patch) | |
tree | 6ebb26742f1fee6b485a2f7b5baa84e15c659b14 /utf8.c | |
parent | 5fc7312d1b6da1acccc8cf7dfff2bed79b48a33c (diff) |
* Makefile.in, */Makefile.sub (VPATH): add enc directory.
* common.mk (ENCOBJS): encoding objects.
* enc: directory for encodings.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13675 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'utf8.c')
-rw-r--r-- | utf8.c | 334 |
1 files changed, 0 insertions, 334 deletions
diff --git a/utf8.c b/utf8.c deleted file mode 100644 index 3add59f475..0000000000 --- a/utf8.c +++ /dev/null @@ -1,334 +0,0 @@ -/********************************************************************** - utf8.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" - -#define USE_INVALID_CODE_SCHEME - -#ifdef USE_INVALID_CODE_SCHEME -/* virtual codepoint values for invalid encoding byte 0xfe and 0xff */ -#define INVALID_CODE_FE 0xfffffffe -#define INVALID_CODE_FF 0xffffffff -#define VALID_CODE_LIMIT 0x7fffffff -#endif - -#define utf8_islead(c) ((UChar )((c) & 0xc0) != 0x80) - -static const int EncLen_UTF8[] = { - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 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, - 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, - 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 1, 1 -}; - -static int -utf8_mbc_enc_len(const UChar* p, const UChar* e, OnigEncoding enc) -{ - return EncLen_UTF8[*p]; -} - -static int -utf8_is_mbc_newline(const UChar* p, const UChar* end, OnigEncoding enc) -{ - if (p < end) { - if (*p == 0x0a) return 1; - -#ifdef USE_UNICODE_ALL_LINE_TERMINATORS -#ifndef USE_CRNL_AS_LINE_TERMINATOR - if (*p == 0x0d) return 1; -#endif - if (p + 1 < end) { - if (*(p+1) == 0x85 && *p == 0xc2) /* U+0085 */ - return 1; - if (p + 2 < end) { - if ((*(p+2) == 0xa8 || *(p+2) == 0xa9) - && *(p+1) == 0x80 && *p == 0xe2) /* U+2028, U+2029 */ - return 1; - } - } -#endif - } - - return 0; -} - -static OnigCodePoint -utf8_mbc_to_code(const UChar* p, const UChar* end, OnigEncoding enc) -{ - int c, len; - OnigCodePoint n; - - len = enc_len(ONIG_ENCODING_UTF8, p, end); - c = *p++; - if (len > 1) { - len--; - n = c & ((1 << (6 - len)) - 1); - while (len--) { - c = *p++; - n = (n << 6) | (c & ((1 << 6) - 1)); - } - return n; - } - else { -#ifdef USE_INVALID_CODE_SCHEME - if (c > 0xfd) { - return ((c == 0xfe) ? INVALID_CODE_FE : INVALID_CODE_FF); - } -#endif - return (OnigCodePoint )c; - } -} - -static int -utf8_code_to_mbclen(OnigCodePoint code, OnigEncoding enc) -{ - if ((code & 0xffffff80) == 0) return 1; - else if ((code & 0xfffff800) == 0) { - if (code <= 0xff && code >= 0xfe) - return 1; - return 2; - } - else if ((code & 0xffff0000) == 0) return 3; - else if ((code & 0xffe00000) == 0) return 4; - else if ((code & 0xfc000000) == 0) return 5; - else if ((code & 0x80000000) == 0) return 6; -#ifdef USE_INVALID_CODE_SCHEME - else if (code == INVALID_CODE_FE) return 1; - else if (code == INVALID_CODE_FF) return 1; -#endif - else - return ONIGENC_ERR_TOO_BIG_WIDE_CHAR_VALUE; -} - -#if 0 -static int -utf8_code_to_mbc_first(OnigCodePoint code) -{ - if ((code & 0xffffff80) == 0) - return code; - else { - if ((code & 0xfffff800) == 0) - return ((code>>6)& 0x1f) | 0xc0; - else if ((code & 0xffff0000) == 0) - return ((code>>12) & 0x0f) | 0xe0; - else if ((code & 0xffe00000) == 0) - return ((code>>18) & 0x07) | 0xf0; - else if ((code & 0xfc000000) == 0) - return ((code>>24) & 0x03) | 0xf8; - else if ((code & 0x80000000) == 0) - return ((code>>30) & 0x01) | 0xfc; - else { - return ONIGENC_ERR_TOO_BIG_WIDE_CHAR_VALUE; - } - } -} -#endif - -static int -utf8_code_to_mbc(OnigCodePoint code, UChar *buf, OnigEncoding enc) -{ -#define UTF8_TRAILS(code, shift) (UChar )((((code) >> (shift)) & 0x3f) | 0x80) -#define UTF8_TRAIL0(code) (UChar )(((code) & 0x3f) | 0x80) - - if ((code & 0xffffff80) == 0) { - *buf = (UChar )code; - return 1; - } - else { - UChar *p = buf; - - if ((code & 0xfffff800) == 0) { - *p++ = (UChar )(((code>>6)& 0x1f) | 0xc0); - } - else if ((code & 0xffff0000) == 0) { - *p++ = (UChar )(((code>>12) & 0x0f) | 0xe0); - *p++ = UTF8_TRAILS(code, 6); - } - else if ((code & 0xffe00000) == 0) { - *p++ = (UChar )(((code>>18) & 0x07) | 0xf0); - *p++ = UTF8_TRAILS(code, 12); - *p++ = UTF8_TRAILS(code, 6); - } - else if ((code & 0xfc000000) == 0) { - *p++ = (UChar )(((code>>24) & 0x03) | 0xf8); - *p++ = UTF8_TRAILS(code, 18); - *p++ = UTF8_TRAILS(code, 12); - *p++ = UTF8_TRAILS(code, 6); - } - else if ((code & 0x80000000) == 0) { - *p++ = (UChar )(((code>>30) & 0x01) | 0xfc); - *p++ = UTF8_TRAILS(code, 24); - *p++ = UTF8_TRAILS(code, 18); - *p++ = UTF8_TRAILS(code, 12); - *p++ = UTF8_TRAILS(code, 6); - } -#ifdef USE_INVALID_CODE_SCHEME - else if (code == INVALID_CODE_FE) { - *p = 0xfe; - return 1; - } - else if (code == INVALID_CODE_FF) { - *p = 0xff; - return 1; - } -#endif - else { - return ONIGENC_ERR_TOO_BIG_WIDE_CHAR_VALUE; - } - - *p++ = UTF8_TRAIL0(code); - return p - buf; - } -} - -static int -utf8_mbc_case_fold(OnigCaseFoldType flag, const UChar** pp, - const UChar* end, UChar* fold, OnigEncoding enc) -{ - const UChar* p = *pp; - - if (ONIGENC_IS_MBC_ASCII(p)) { -#ifdef USE_UNICODE_CASE_FOLD_TURKISH_AZERI - if ((flag & ONIGENC_CASE_FOLD_TURKISH_AZERI) != 0) { - if (*p == 0x49) { - *fold++ = 0xc4; - *fold = 0xb1; - (*pp)++; - return 2; - } - } -#endif - - *fold = ONIGENC_ASCII_CODE_TO_LOWER_CASE(*p); - (*pp)++; - return 1; /* return byte length of converted char to lower */ - } - else { - return onigenc_unicode_mbc_case_fold(ONIG_ENCODING_UTF8, flag, - pp, end, fold); - } -} - -#if 0 -static int -utf8_is_mbc_ambiguous(OnigCaseFoldType flag, const UChar** pp, const UChar* end) -{ - const UChar* p = *pp; - - if (ONIGENC_IS_MBC_ASCII(p)) { - (*pp)++; - return ONIGENC_IS_ASCII_CODE_CASE_AMBIG(*p); - } - else { - (*pp) += enc_len(ONIG_ENCODING_UTF8, p); - - if (*p == 0xc3) { - int c = *(p + 1); - if (c >= 0x80) { - if (c <= (UChar )0x9e) { /* upper */ - if (c == (UChar )0x97) return FALSE; - return TRUE; - } - else if (c >= (UChar )0xa0 && c <= (UChar )0xbe) { /* lower */ - if (c == (UChar )'\267') return FALSE; - return TRUE; - } - else if (c == (UChar )0x9f && - (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) { - return TRUE; - } - } - } - } - - return FALSE; -} -#endif - - -static int -utf8_get_ctype_code_range(int ctype, OnigCodePoint *sb_out, - const OnigCodePoint* ranges[], OnigEncoding enc) -{ - *sb_out = 0x80; - return onigenc_unicode_ctype_code_range(ctype, ranges); -} - - -static UChar* -utf8_left_adjust_char_head(const UChar* start, const UChar* s, OnigEncoding enc) -{ - const UChar *p; - - if (s <= start) return (UChar* )s; - p = s; - - while (!utf8_islead(*p) && p > start) p--; - return (UChar* )p; -} - -static int -utf8_get_case_fold_codes_by_str(OnigCaseFoldType flag, - const OnigUChar* p, const OnigUChar* end, OnigCaseFoldCodeItem items[], - OnigEncoding enc) -{ - return onigenc_unicode_get_case_fold_codes_by_str(ONIG_ENCODING_UTF8, - flag, p, end, items); -} - -OnigEncodingType OnigEncodingUTF8 = { - utf8_mbc_enc_len, - "UTF-8", /* name */ - 6, /* max byte length */ - 1, /* min byte length */ - utf8_is_mbc_newline, - utf8_mbc_to_code, - utf8_code_to_mbclen, - utf8_code_to_mbc, - utf8_mbc_case_fold, - onigenc_unicode_apply_all_case_fold, - utf8_get_case_fold_codes_by_str, - onigenc_unicode_property_name_to_ctype, - onigenc_unicode_is_code_ctype, - utf8_get_ctype_code_range, - utf8_left_adjust_char_head, - onigenc_always_true_is_allowed_reverse_match -}; 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