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478 lines
11 KiB
C
478 lines
11 KiB
C
/* $FreeBSD$ */
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/* $NetBSD: citrus_mskanji.c,v 1.13 2008/06/14 16:01:08 tnozaki Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c)2002 Citrus Project,
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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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/*
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* ja_JP.SJIS locale table for BSD4.4/rune
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* version 1.0
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* (C) Sin'ichiro MIYATANI / Phase One, Inc
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* May 12, 1995
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Phase One, Inc.
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* 4. The name of Phase One, Inc. may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 <sys/cdefs.h>
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#include <sys/types.h>
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#include <assert.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wchar.h>
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#include "citrus_namespace.h"
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#include "citrus_types.h"
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#include "citrus_bcs.h"
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#include "citrus_module.h"
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#include "citrus_stdenc.h"
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#include "citrus_mskanji.h"
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/* ----------------------------------------------------------------------
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* private stuffs used by templates
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*/
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typedef struct _MSKanjiState {
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int chlen;
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char ch[2];
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} _MSKanjiState;
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typedef struct {
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int mode;
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#define MODE_JIS2004 1
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} _MSKanjiEncodingInfo;
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#define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
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#define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_
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#define _FUNCNAME(m) _citrus_MSKanji_##m
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#define _ENCODING_INFO _MSKanjiEncodingInfo
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#define _ENCODING_STATE _MSKanjiState
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#define _ENCODING_MB_CUR_MAX(_ei_) 2
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#define _ENCODING_IS_STATE_DEPENDENT 0
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#define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
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static bool
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_mskanji1(int c)
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{
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return ((c >= 0x81 && c <= 0x9f) || (c >= 0xe0 && c <= 0xfc));
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}
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static bool
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_mskanji2(int c)
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{
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return ((c >= 0x40 && c <= 0x7e) || (c >= 0x80 && c <= 0xfc));
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}
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static __inline void
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/*ARGSUSED*/
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_citrus_MSKanji_init_state(_MSKanjiEncodingInfo * __restrict ei __unused,
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_MSKanjiState * __restrict s)
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{
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s->chlen = 0;
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}
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#if 0
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static __inline void
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/*ARGSUSED*/
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_citrus_MSKanji_pack_state(_MSKanjiEncodingInfo * __restrict ei __unused,
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void * __restrict pspriv, const _MSKanjiState * __restrict s)
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{
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memcpy(pspriv, (const void *)s, sizeof(*s));
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}
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static __inline void
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/*ARGSUSED*/
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_citrus_MSKanji_unpack_state(_MSKanjiEncodingInfo * __restrict ei __unused,
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_MSKanjiState * __restrict s, const void * __restrict pspriv)
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{
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memcpy((void *)s, pspriv, sizeof(*s));
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}
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#endif
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static int
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/*ARGSUSED*/
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_citrus_MSKanji_mbrtowc_priv(_MSKanjiEncodingInfo * __restrict ei,
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wchar_t * __restrict pwc, char ** __restrict s, size_t n,
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_MSKanjiState * __restrict psenc, size_t * __restrict nresult)
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{
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char *s0;
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wchar_t wchar;
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int chlenbak, len;
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s0 = *s;
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if (s0 == NULL) {
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_citrus_MSKanji_init_state(ei, psenc);
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*nresult = 0; /* state independent */
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return (0);
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}
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chlenbak = psenc->chlen;
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/* make sure we have the first byte in the buffer */
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switch (psenc->chlen) {
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case 0:
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if (n < 1)
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goto restart;
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psenc->ch[0] = *s0++;
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psenc->chlen = 1;
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n--;
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break;
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case 1:
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break;
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default:
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/* illegal state */
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goto encoding_error;
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}
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len = _mskanji1(psenc->ch[0] & 0xff) ? 2 : 1;
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while (psenc->chlen < len) {
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if (n < 1)
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goto restart;
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psenc->ch[psenc->chlen] = *s0++;
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psenc->chlen++;
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n--;
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}
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*s = s0;
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switch (len) {
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case 1:
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wchar = psenc->ch[0] & 0xff;
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break;
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case 2:
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if (!_mskanji2(psenc->ch[1] & 0xff))
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goto encoding_error;
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wchar = ((psenc->ch[0] & 0xff) << 8) | (psenc->ch[1] & 0xff);
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break;
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default:
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/* illegal state */
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goto encoding_error;
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}
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psenc->chlen = 0;
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if (pwc)
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*pwc = wchar;
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*nresult = wchar ? len - chlenbak : 0;
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return (0);
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encoding_error:
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psenc->chlen = 0;
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*nresult = (size_t)-1;
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return (EILSEQ);
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restart:
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*nresult = (size_t)-2;
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*s = s0;
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return (0);
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}
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static int
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_citrus_MSKanji_wcrtomb_priv(_MSKanjiEncodingInfo * __restrict ei __unused,
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char * __restrict s, size_t n, wchar_t wc,
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_MSKanjiState * __restrict psenc __unused, size_t * __restrict nresult)
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{
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int ret;
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/* check invalid sequence */
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if (wc & ~0xffff) {
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ret = EILSEQ;
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goto err;
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}
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if (wc & 0xff00) {
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if (n < 2) {
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ret = E2BIG;
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goto err;
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}
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s[0] = (wc >> 8) & 0xff;
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s[1] = wc & 0xff;
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if (!_mskanji1(s[0] & 0xff) || !_mskanji2(s[1] & 0xff)) {
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ret = EILSEQ;
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goto err;
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}
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*nresult = 2;
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return (0);
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} else {
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if (n < 1) {
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ret = E2BIG;
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goto err;
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}
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s[0] = wc & 0xff;
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if (_mskanji1(s[0] & 0xff)) {
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ret = EILSEQ;
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goto err;
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}
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*nresult = 1;
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return (0);
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}
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err:
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*nresult = (size_t)-1;
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return (ret);
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}
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static __inline int
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/*ARGSUSED*/
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_citrus_MSKanji_stdenc_wctocs(_MSKanjiEncodingInfo * __restrict ei,
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_csid_t * __restrict csid, _index_t * __restrict idx, wchar_t wc)
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{
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_index_t col, row;
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int offset;
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if ((_wc_t)wc < 0x80) {
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/* ISO-646 */
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*csid = 0;
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*idx = (_index_t)wc;
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} else if ((_wc_t)wc < 0x100) {
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/* KANA */
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*csid = 1;
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*idx = (_index_t)wc & 0x7F;
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} else {
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/* Kanji (containing Gaiji zone) */
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/*
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* 94^2 zone (contains a part of Gaiji (0xED40 - 0xEEFC)):
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* 0x8140 - 0x817E -> 0x2121 - 0x215F
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* 0x8180 - 0x819E -> 0x2160 - 0x217E
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* 0x819F - 0x81FC -> 0x2221 - 0x227E
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*
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* 0x8240 - 0x827E -> 0x2321 - 0x235F
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* ...
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* 0x9F9F - 0x9FFc -> 0x5E21 - 0x5E7E
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*
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* 0xE040 - 0xE07E -> 0x5F21 - 0x5F5F
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* ...
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* 0xEF9F - 0xEFFC -> 0x7E21 - 0x7E7E
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*
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* extended Gaiji zone:
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* 0xF040 - 0xFCFC
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*
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* JIS X0213-plane2:
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* 0xF040 - 0xF09E -> 0x2121 - 0x217E
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* 0xF140 - 0xF19E -> 0x2321 - 0x237E
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* ...
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* 0xF240 - 0xF29E -> 0x2521 - 0x257E
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*
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* 0xF09F - 0xF0FC -> 0x2821 - 0x287E
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* 0xF29F - 0xF2FC -> 0x2C21 - 0x2C7E
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* ...
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* 0xF44F - 0xF49E -> 0x2F21 - 0x2F7E
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*
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* 0xF49F - 0xF4FC -> 0x6E21 - 0x6E7E
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* ...
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* 0xFC9F - 0xFCFC -> 0x7E21 - 0x7E7E
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*/
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row = ((_wc_t)wc >> 8) & 0xFF;
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col = (_wc_t)wc & 0xFF;
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if (!_mskanji1(row) || !_mskanji2(col))
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return (EILSEQ);
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if ((ei->mode & MODE_JIS2004) == 0 || row < 0xF0) {
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*csid = 2;
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offset = 0x81;
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} else {
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*csid = 3;
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if ((_wc_t)wc <= 0xF49E) {
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offset = (_wc_t)wc >= 0xF29F ||
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((_wc_t)wc >= 0xF09F &&
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(_wc_t)wc <= 0xF0FC) ? 0xED : 0xF0;
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} else
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offset = 0xCE;
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}
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row -= offset;
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if (row >= 0x5F)
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row -= 0x40;
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row = row * 2 + 0x21;
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col -= 0x1F;
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if (col >= 0x61)
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col -= 1;
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if (col > 0x7E) {
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row += 1;
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col -= 0x5E;
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}
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*idx = ((_index_t)row << 8) | col;
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}
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return (0);
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}
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static __inline int
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/*ARGSUSED*/
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_citrus_MSKanji_stdenc_cstowc(_MSKanjiEncodingInfo * __restrict ei,
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wchar_t * __restrict wc, _csid_t csid, _index_t idx)
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{
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uint32_t col, row;
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int offset;
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switch (csid) {
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case 0:
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/* ISO-646 */
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if (idx >= 0x80)
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return (EILSEQ);
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*wc = (wchar_t)idx;
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break;
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case 1:
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/* kana */
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if (idx >= 0x80)
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return (EILSEQ);
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*wc = (wchar_t)idx + 0x80;
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break;
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case 3:
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if ((ei->mode & MODE_JIS2004) == 0)
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return (EILSEQ);
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/*FALLTHROUGH*/
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case 2:
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/* kanji */
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row = (idx >> 8);
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if (row < 0x21)
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return (EILSEQ);
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if (csid == 3) {
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if (row <= 0x2F)
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offset = (row == 0x22 || row >= 0x26) ?
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0xED : 0xF0;
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else if (row >= 0x4D && row <= 0x7E)
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offset = 0xCE;
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else
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return (EILSEQ);
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} else {
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if (row > 0x97)
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return (EILSEQ);
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offset = (row < 0x5F) ? 0x81 : 0xC1;
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}
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col = idx & 0xFF;
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if (col < 0x21 || col > 0x7E)
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return (EILSEQ);
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row -= 0x21; col -= 0x21;
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if ((row & 1) == 0) {
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col += 0x40;
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if (col >= 0x7F)
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col += 1;
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} else
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col += 0x9F;
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row = row / 2 + offset;
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*wc = ((wchar_t)row << 8) | col;
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break;
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default:
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return (EILSEQ);
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}
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return (0);
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}
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static __inline int
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/*ARGSUSED*/
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_citrus_MSKanji_stdenc_get_state_desc_generic(_MSKanjiEncodingInfo * __restrict ei __unused,
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_MSKanjiState * __restrict psenc, int * __restrict rstate)
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{
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*rstate = (psenc->chlen == 0) ? _STDENC_SDGEN_INITIAL :
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_STDENC_SDGEN_INCOMPLETE_CHAR;
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return (0);
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}
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static int
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/*ARGSUSED*/
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_citrus_MSKanji_encoding_module_init(_MSKanjiEncodingInfo * __restrict ei,
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const void * __restrict var, size_t lenvar)
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{
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const char *p;
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p = var;
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memset((void *)ei, 0, sizeof(*ei));
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while (lenvar > 0) {
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switch (_bcs_toupper(*p)) {
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case 'J':
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MATCH(JIS2004, ei->mode |= MODE_JIS2004);
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break;
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}
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++p;
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--lenvar;
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}
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return (0);
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}
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static void
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_citrus_MSKanji_encoding_module_uninit(_MSKanjiEncodingInfo *ei __unused)
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{
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}
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/* ----------------------------------------------------------------------
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* public interface for stdenc
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*/
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_CITRUS_STDENC_DECLS(MSKanji);
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_CITRUS_STDENC_DEF_OPS(MSKanji);
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#include "citrus_stdenc_template.h"
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