393 lines
8.7 KiB
C
393 lines
8.7 KiB
C
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/* $NetBSD: citrus_johab.c,v 1.4 2008/06/14 16:01:07 tnozaki Exp $ */
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/*-
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* Copyright (c)2006 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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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: citrus_johab.c,v 1.4 2008/06/14 16:01:07 tnozaki Exp $");
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#endif /* LIBC_SCCS and not lint */
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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 <string.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <wchar.h>
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#include <limits.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_ctype.h"
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#include "citrus_stdenc.h"
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#include "citrus_johab.h"
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/* ----------------------------------------------------------------------
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* private stuffs used by templates
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*/
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typedef struct {
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int chlen;
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char ch[2];
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} _JOHABState;
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typedef struct {
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int dummy;
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} _JOHABEncodingInfo;
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typedef struct {
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_JOHABEncodingInfo ei;
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struct {
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/* for future multi-locale facility */
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_JOHABState s_mblen;
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_JOHABState s_mbrlen;
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_JOHABState s_mbrtowc;
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_JOHABState s_mbtowc;
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_JOHABState s_mbsrtowcs;
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_JOHABState s_wcrtomb;
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_JOHABState s_wcsrtombs;
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_JOHABState s_wctomb;
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} states;
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} _JOHABCTypeInfo;
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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_JOHAB_##m
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#define _ENCODING_INFO _JOHABEncodingInfo
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#define _CTYPE_INFO _JOHABCTypeInfo
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#define _ENCODING_STATE _JOHABState
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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 __inline void
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/*ARGSUSED*/
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_citrus_JOHAB_init_state(_JOHABEncodingInfo * __restrict ei,
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_JOHABState * __restrict psenc)
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{
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/* ei may be null */
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_DIAGASSERT(psenc != NULL);
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psenc->chlen = 0;
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}
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static __inline void
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/*ARGSUSED*/
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_citrus_JOHAB_pack_state(_JOHABEncodingInfo * __restrict ei,
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void * __restrict pspriv,
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const _JOHABState * __restrict psenc)
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{
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/* ei may be null */
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_DIAGASSERT(pspriv != NULL);
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_DIAGASSERT(psenc != NULL);
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memcpy(pspriv, (const void *)psenc, sizeof(*psenc));
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}
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static __inline void
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/*ARGSUSED*/
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_citrus_JOHAB_unpack_state(_JOHABEncodingInfo * __restrict ei,
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_JOHABState * __restrict psenc,
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const void * __restrict pspriv)
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{
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/* ei may be null */
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_DIAGASSERT(psenc != NULL);
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_DIAGASSERT(pspriv != NULL);
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memcpy((void *)psenc, pspriv, sizeof(*psenc));
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}
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static void
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/*ARGSUSED*/
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_citrus_JOHAB_encoding_module_uninit(_JOHABEncodingInfo *ei)
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{
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/* ei may be null */
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}
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static int
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/*ARGSUSED*/
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_citrus_JOHAB_encoding_module_init(_JOHABEncodingInfo * __restrict ei,
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const void * __restrict var, size_t lenvar)
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{
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/* ei may be null */
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return 0;
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}
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static __inline int
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ishangul(int l, int t)
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{
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return (l >= 0x84 && l <= 0xD3) &&
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((t >= 0x41 && t <= 0x7E) || (t >= 0x81 && t <= 0xFE));
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}
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static __inline int
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isuda(int l, int t)
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{
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return (l == 0xD8) &&
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((t >= 0x31 && t <= 0x7E) || (t >= 0x91 && t <= 0xFE));
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}
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static __inline int
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ishanja(int l, int t)
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{
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return ((l >= 0xD9 && l <= 0xDE) || (l >= 0xE0 && l <= 0xF9)) &&
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((t >= 0x31 && t <= 0x7E) || (t >= 0x91 && t <= 0xFE));
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}
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static int
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/*ARGSUSED*/
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_citrus_JOHAB_mbrtowc_priv(_JOHABEncodingInfo * __restrict ei,
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wchar_t * __restrict pwc, const char ** __restrict s, size_t n,
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_JOHABState * __restrict psenc, size_t * __restrict nresult)
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{
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const char *s0;
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int l, t;
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/* ei may be unused */
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_DIAGASSERT(s != NULL);
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_DIAGASSERT(psenc != NULL);
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_DIAGASSERT(nresult != 0);
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if (*s == NULL) {
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_citrus_JOHAB_init_state(ei, psenc);
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*nresult = _ENCODING_IS_STATE_DEPENDENT;
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return 0;
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}
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s0 = *s;
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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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l = *s0++ & 0xFF;
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if (l <= 0x7F) {
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if (pwc != NULL)
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*pwc = (wchar_t)l;
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*nresult = (l == 0) ? 0 : 1;
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*s = s0;
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return 0;
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}
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psenc->ch[psenc->chlen++] = l;
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break;
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case 1:
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l = psenc->ch[0] & 0xFF;
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break;
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default:
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return EINVAL;
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}
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if (n-- < 1) {
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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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t = *s0++ & 0xFF;
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if (!ishangul(l, t) && !isuda(l, t) && !ishanja(l, t)) {
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*nresult = (size_t)-1;
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return EILSEQ;
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}
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if (pwc != NULL)
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*pwc = (wchar_t)(l << 8 | t);
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*nresult = s0 - *s;
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*s = s0;
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psenc->chlen = 0;
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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_JOHAB_wcrtomb_priv(_JOHABEncodingInfo * __restrict ei,
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char * __restrict s, size_t n, wchar_t wc,
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_JOHABState * __restrict psenc, size_t * __restrict nresult)
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{
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int l, t;
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/* ei may be unused */
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_DIAGASSERT(s != NULL);
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_DIAGASSERT(psenc != NULL);
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_DIAGASSERT(nresult != NULL);
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if (psenc->chlen != 0)
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return EINVAL;
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/* XXX assume wchar_t as int */
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if ((uint32_t)wc <= 0x7F) {
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if (n < 1)
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goto e2big;
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*s = wc & 0xFF;
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*nresult = 1;
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} else if ((uint32_t)wc <= 0xFFFF) {
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if (n < 2) {
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e2big:
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*nresult = (size_t)-1;
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return E2BIG;
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}
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l = (wc >> 8) & 0xFF;
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t = wc & 0xFF;
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if (!ishangul(l, t) && !isuda(l, t) && !ishanja(l, t))
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goto ilseq;
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*s++ = l;
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*s = t;
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*nresult = 2;
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} else {
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ilseq:
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*nresult = (size_t)-1;
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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_JOHAB_stdenc_wctocs(_JOHABEncodingInfo * __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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int m, l, t, linear;
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/* ei may be unused */
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_DIAGASSERT(csid != NULL);
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_DIAGASSERT(idx != NULL);
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/* XXX assume wchar_t as int */
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if ((uint32_t)wc <= 0x7F) {
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*idx = (_index_t)wc;
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*csid = 0;
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} else if ((uint32_t)wc <= 0xFFFF) {
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l = (wc >> 8) & 0xFF;
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t = wc & 0xFF;
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if (ishangul(l, t) || isuda(l, t)) {
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*idx = (_index_t)wc;
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*csid = 1;
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} else {
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if (l >= 0xD9 && l <= 0xDE) {
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linear = l - 0xD9;
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m = 0x21;
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} else if (l >= 0xE0 && l <= 0xF9) {
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linear = l - 0xE0;
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m = 0x4A;
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} else {
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return EILSEQ;
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}
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linear *= 188;
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if (t >= 0x31 && t <= 0x7E) {
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linear += t - 0x31;
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} else if (t >= 0x91 && t <= 0xFE) {
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linear += t - 0x43;
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} else {
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return EILSEQ;
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}
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l = (linear / 94) + m;
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t = (linear % 94) + 0x21;
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*idx = (_index_t)((l << 8) | t);
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*csid = 2;
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}
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} else {
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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_JOHAB_stdenc_cstowc(_JOHABEncodingInfo * __restrict ei,
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wchar_t * __restrict wc, _csid_t csid, _index_t idx)
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{
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int m, n, l, t, linear;
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/* ei may be unused */
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_DIAGASSERT(wc != NULL);
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switch (csid) {
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case 0:
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case 1:
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*wc = (wchar_t)idx;
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break;
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case 2:
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if (idx >= 0x2121 && idx <= 0x2C71) {
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m = 0xD9;
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n = 0x21;
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} else if (idx >= 0x4A21 && idx <= 0x7D7E) {
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m = 0xE0;
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n = 0x4A;
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} else {
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return EILSEQ;
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}
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l = ((idx >> 8) & 0xFF) - n;
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t = (idx & 0xFF) - 0x21;
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linear = (l * 94) + t;
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l = (linear / 188) + m;
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t = linear % 188;
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t += (t <= 0x4D) ? 0x31 : 0x43;
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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_JOHAB_stdenc_get_state_desc_generic(_JOHABEncodingInfo * __restrict ei,
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_JOHABState * __restrict psenc, int * __restrict rstate)
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{
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/* ei may be unused */
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_DIAGASSERT(psenc != NULL);
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_DIAGASSERT(rstate != NULL);
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*rstate = (psenc->chlen == 0)
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? _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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/* ----------------------------------------------------------------------
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* public interface for ctype
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||
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*/
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||
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|
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_CITRUS_CTYPE_DECLS(JOHAB);
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||
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|
_CITRUS_CTYPE_DEF_OPS(JOHAB);
|
||
|
|
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||
|
|
#include "citrus_ctype_template.h"
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||
|
|
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||
|
|
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||
|
|
/* ----------------------------------------------------------------------
|
||
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|
* public interface for stdenc
|
||
|
|
*/
|
||
|
|
|
||
|
|
_CITRUS_STDENC_DECLS(JOHAB);
|
||
|
|
_CITRUS_STDENC_DEF_OPS(JOHAB);
|
||
|
|
|
||
|
|
#include "citrus_stdenc_template.h"
|