зеркало из https://github.com/github/ruby.git
341 строка
14 KiB
C
341 строка
14 KiB
C
/**********************************************************************
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emacs_mule.c - Oniguruma (regular expression library)
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**********************************************************************/
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/*-
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* Copyright (c) 2002-2007 K.Kosako <sndgk393 AT ybb DOT ne DOT jp>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "regint.h"
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#define emacsmule_islead(c) ((UChar )((c) - 0x81) < 0x9e - 0x81)
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/*
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CHARACTER := ASCII_CHAR | MULTIBYTE_CHAR
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MULTIBYTE_CHAR := PRIMARY_CHAR_1 | PRIMARY_CHAR_2
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| SECONDARY_CHAR_1 | SECONDARY_CHAR_2
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PRIMARY_CHAR_1 := LEADING_CODE_PRI C1
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PRIMARY_CHAR_2 := LEADING_CODE_PRI C1 C2
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SECONDARY_CHAR_1 := LEADING_CODE_SEC LEADING_CODE_EXT C1
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SECONDARY_CHAR_2 := LEADING_CODE_SEC LEADING_CODE_EXT C1 C2
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ASCII_CHAR := 0 | 1 | ... | 127
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LEADING_CODE_PRI := 129 | 130 | ... | 153
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LEADING_CODE_SEC := 154 | 155 | 156 | 157
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C1, C2, LEADING_CODE_EXT := 160 | 161 | ... | 255
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*/
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static const int EncLen_EmacsMule[] = {
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
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3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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};
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typedef enum { FAILURE = -2, ACCEPT = -1, S0 = 0, S1, S2, S3, S4, S5, S6 } state_t;
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#define A ACCEPT
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#define F FAILURE
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static const signed char trans[][0x100] = {
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{ /* S0 0 1 2 3 4 5 6 7 8 9 a b c d e f */
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/* 0 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
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/* 1 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
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/* 2 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
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/* 3 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
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/* 4 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
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/* 5 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
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/* 6 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
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/* 7 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
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/* 8 */ F, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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/* 9 */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 4, 4, 5, 6, F, F,
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/* a */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* b */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* c */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* d */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* e */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* f */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F
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},
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{ /* S1 0 1 2 3 4 5 6 7 8 9 a b c d e f */
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/* 0 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 1 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 2 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 3 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 4 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 5 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 6 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 7 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 8 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 9 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* a */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
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/* b */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
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/* c */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
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/* d */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
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/* e */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
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/* f */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A
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},
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{ /* S2 0 1 2 3 4 5 6 7 8 9 a b c d e f */
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/* 0 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 1 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 2 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 3 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 4 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 5 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 6 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 7 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 8 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 9 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* a */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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/* b */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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/* c */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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/* d */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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/* e */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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/* f */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
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},
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{ /* S3 0 1 2 3 4 5 6 7 8 9 a b c d e f */
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/* 0 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 1 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 2 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 3 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 4 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 5 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 6 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 7 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 8 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 9 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* a */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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/* b */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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/* c */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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/* d */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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/* e */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* f */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F
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},
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{ /* S4 0 1 2 3 4 5 6 7 8 9 a b c d e f */
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/* 0 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 1 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 2 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 3 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 4 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 5 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 6 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 7 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 8 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 9 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* a */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* b */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* c */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* d */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* e */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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/* f */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F
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},
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{ /* S5 0 1 2 3 4 5 6 7 8 9 a b c d e f */
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/* 0 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 1 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 2 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 3 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 4 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 5 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 6 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 7 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 8 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 9 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* a */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* b */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* c */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* d */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* e */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* f */ 2, 2, 2, 2, 2, F, F, F, F, F, F, F, F, F, F, F
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},
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{ /* S6 0 1 2 3 4 5 6 7 8 9 a b c d e f */
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/* 0 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 1 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 2 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 3 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 4 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 5 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 6 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 7 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 8 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* 9 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* a */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* b */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* c */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* d */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* e */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
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/* f */ F, F, F, F, F, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, F
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},
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};
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#undef A
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#undef F
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static int
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mbc_enc_len(const UChar* p, const UChar* e, OnigEncoding enc ARG_UNUSED)
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{
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int firstbyte = *p++;
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state_t s;
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s = trans[0][firstbyte];
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if (s < 0) return s == ACCEPT ? ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND(1) :
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ONIGENC_CONSTRUCT_MBCLEN_INVALID();
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if (p == e) return ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE(EncLen_EmacsMule[firstbyte]-1);
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s = trans[s][*p++];
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if (s < 0) return s == ACCEPT ? ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND(2) :
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ONIGENC_CONSTRUCT_MBCLEN_INVALID();
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if (p == e) return ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE(EncLen_EmacsMule[firstbyte]-2);
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s = trans[s][*p++];
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if (s < 0) return s == ACCEPT ? ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND(3) :
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ONIGENC_CONSTRUCT_MBCLEN_INVALID();
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if (p == e) return ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE(EncLen_EmacsMule[firstbyte]-3);
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s = trans[s][*p++];
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return s == ACCEPT ? ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND(4) :
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ONIGENC_CONSTRUCT_MBCLEN_INVALID();
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}
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static OnigCodePoint
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mbc_to_code(const UChar* p, const UChar* end, OnigEncoding enc)
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{
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int c, i, len;
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OnigCodePoint n;
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len = enclen(enc, p, end);
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n = (OnigCodePoint )*p++;
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if (len == 1) return n;
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for (i = 1; i < len; i++) {
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if (p >= end) break;
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c = *p++;
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n <<= 8; n += c;
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}
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return n;
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}
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static int
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code_to_mbclen(OnigCodePoint code, OnigEncoding enc ARG_UNUSED)
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{
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if (ONIGENC_IS_CODE_ASCII(code)) return 1;
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else if (code > 0xffffffff) return 0;
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else if ((code & 0xff000000) >= 0x80000000) return 4;
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else if ((code & 0xff0000) >= 0x800000) return 3;
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else if ((code & 0xff00) >= 0x8000) return 2;
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else
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return ONIGERR_INVALID_CODE_POINT_VALUE;
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}
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static int
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code_to_mbc(OnigCodePoint code, UChar *buf, OnigEncoding enc)
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{
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UChar *p = buf;
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if ((code & 0xff000000) != 0) *p++ = (UChar )(((code >> 24) & 0xff));
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if ((code & 0xff0000) != 0) *p++ = (UChar )(((code >> 16) & 0xff));
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if ((code & 0xff00) != 0) *p++ = (UChar )(((code >> 8) & 0xff));
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*p++ = (UChar )(code & 0xff);
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if (enclen(enc, buf, p) != (p - buf))
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return ONIGERR_INVALID_CODE_POINT_VALUE;
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return (int)(p - buf);
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}
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static int
|
|
mbc_case_fold(OnigCaseFoldType flag,
|
|
const UChar** pp, const UChar* end, UChar* lower,
|
|
OnigEncoding enc)
|
|
{
|
|
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 = mbc_enc_len(p, end, enc);
|
|
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, const UChar* end, OnigEncoding enc)
|
|
{
|
|
const UChar *p;
|
|
|
|
if (s <= start) return (UChar* )s;
|
|
p = s;
|
|
|
|
while (!emacsmule_islead(*p) && p > start) p--;
|
|
return (UChar* )p;
|
|
}
|
|
|
|
static int
|
|
is_code_ctype(OnigCodePoint code, unsigned int ctype, OnigEncoding enc ARG_UNUSED)
|
|
{
|
|
if (code < 128)
|
|
return ONIGENC_IS_ASCII_CODE_CTYPE(code, ctype);
|
|
else
|
|
return (code_to_mbclen(code, enc) > 1 ? TRUE : FALSE);
|
|
}
|
|
|
|
/*
|
|
* Name: Emacs-Mule
|
|
* Link: http://www.m17n.org/mule/pricai96/mule.en.html
|
|
*/
|
|
OnigEncodingDefine(emacs_mule, Emacs_Mule) = {
|
|
mbc_enc_len,
|
|
"Emacs-Mule", /* name */
|
|
4, /* 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,
|
|
onigenc_minimum_property_name_to_ctype,
|
|
is_code_ctype,
|
|
onigenc_not_support_get_ctype_code_range,
|
|
left_adjust_char_head,
|
|
onigenc_always_true_is_allowed_reverse_match,
|
|
0
|
|
};
|
|
|
|
ENC_REPLICATE("stateless-ISO-2022-JP", "Emacs-Mule")
|