/src/dcmtk/oficonv/libsrc/citrus_big5.c

Source
/*-
 * Copyright (c)2002, 2006 Citrus Project,
 * 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.
 */

/*-
 * Copyright (c) 1993
 *  The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Paul Borman at Krystal Technologies.
 *
 * 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.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 "dcmtk/config/osconfig.h"
#include "citrus_big5.h"

#ifdef HAVE_SYS_QUEUE_H
#include <sys/queue.h>
#else
#include "dcmtk/oficonv/queue.h"
#endif

#include <sys/types.h>
#include <errno.h>
#include <limits.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>

#include "citrus_bcs.h"
#include "citrus_prop.h"
#include "citrus_types.h"
#include "citrus_module.h"
#include "citrus_stdenc.h"

/* ----------------------------------------------------------------------
 * private stuffs used by templates
 */

typedef struct {
    int  chlen;
    char     ch[2];
} _BIG5State;

typedef struct _BIG5Exclude {
    TAILQ_ENTRY(_BIG5Exclude)    entry;
    wint_t               end;
    wint_t               start;
} _BIG5Exclude;

typedef TAILQ_HEAD(_BIG5ExcludeList, _BIG5Exclude) _BIG5ExcludeList;

typedef struct {
    _BIG5ExcludeList     excludes;
    int          cell[0x100];
} _BIG5EncodingInfo;

#define _CEI_TO_EI(_cei_)       (&(_cei_)->ei)
#define _CEI_TO_STATE(_cei_, _func_)    (_cei_)->states.s_##_func_

#define _FUNCNAME(m)            _citrus_BIG5_##m
#define _ENCODING_INFO          _BIG5EncodingInfo
#define _ENCODING_STATE         _BIG5State
#define _ENCODING_MB_CUR_MAX(_ei_)  2
#define _ENCODING_IS_STATE_DEPENDENT    0
#define _STATE_NEEDS_EXPLICIT_INIT(_ps_)    0


static __inline void
/*ARGSUSED*/
_citrus_BIG5_init_state(_BIG5EncodingInfo * ei ,
    _BIG5State * s)
{
    (void) ei;
    memset(s, 0, sizeof(*s));
}

#if 0
static __inline void
/*ARGSUSED*/
_citrus_BIG5_pack_state(_BIG5EncodingInfo * ei ,
    void * pspriv,
    const _BIG5State * s)
{
    (void) ei;
    memcpy(pspriv, (const void *)s, sizeof(*s));
}

static __inline void
/*ARGSUSED*/
_citrus_BIG5_unpack_state(_BIG5EncodingInfo * ei ,
    _BIG5State * s,
    const void * pspriv)
{
    (void) ei;
    memcpy((void *)s, pspriv, sizeof(*s));
}
#endif

static __inline int
_citrus_BIG5_check(_BIG5EncodingInfo *ei, unsigned int c)
{

    return ((ei->cell[c & 0xFF] & 0x1) ? 2 : 1);
}

static __inline int
_citrus_BIG5_check2(_BIG5EncodingInfo *ei, unsigned int c)
{

    return ((ei->cell[c & 0xFF] & 0x2) ? 1 : 0);
}

static __inline int
_citrus_BIG5_check_excludes(_BIG5EncodingInfo *ei, wint_t c)
{
    _BIG5Exclude *exclude;

    TAILQ_FOREACH(exclude, &ei->excludes, entry) {
        if (c >= exclude->start && c <= exclude->end)
            return (EILSEQ);
    }
    return (0);
}

static int
_citrus_BIG5_fill_rowcol(void * ctx, const char * s,
    uint64_t start, uint64_t end)
{
    _BIG5EncodingInfo *ei;
    uint64_t n;
    int i;

    if (start > 0xFF || end > 0xFF)
        return (EINVAL);
    ei = (_BIG5EncodingInfo *)ctx;
    i = strcmp("row", s) ? 1 : 0;
    i = 1 << i;
    for (n = start; n <= end; ++n)
        ei->cell[n & 0xFF] |= i;
    return (0);
}

static int
/*ARGSUSED*/
_citrus_BIG5_fill_excludes(void * ctx,
    const char * s , uint64_t start, uint64_t end)
{
    _BIG5EncodingInfo *ei;
    _BIG5Exclude *exclude;

    (void) s;
    if (start > 0xFFFF || end > 0xFFFF)
        return (EINVAL);
    ei = (_BIG5EncodingInfo *)ctx;
    exclude = TAILQ_LAST(&ei->excludes, _BIG5ExcludeList);
    if (exclude != NULL && (wint_t)start <= exclude->end)
        return (EINVAL);
    exclude = (void *)malloc(sizeof(*exclude));
    if (exclude == NULL)
        return (ENOMEM);
    exclude->start = (wint_t)start;
    exclude->end = (wint_t)end;
    TAILQ_INSERT_TAIL(&ei->excludes, exclude, entry);

    return (0);
}

static const _citrus_prop_hint_t root_hints[] = {
    _CITRUS_PROP_HINT_NUM("row", &_citrus_BIG5_fill_rowcol),
    _CITRUS_PROP_HINT_NUM("col", &_citrus_BIG5_fill_rowcol),
    _CITRUS_PROP_HINT_NUM("excludes", &_citrus_BIG5_fill_excludes),
    _CITRUS_PROP_HINT_END
};

static void
/*ARGSUSED*/
_citrus_BIG5_encoding_module_uninit(_BIG5EncodingInfo *ei)
{
    _BIG5Exclude *exclude;

    while ((exclude = TAILQ_FIRST(&ei->excludes)) != NULL) {
        TAILQ_REMOVE(&ei->excludes, exclude, entry);
        free(exclude);
    }
}

static int
/*ARGSUSED*/
_citrus_BIG5_encoding_module_init(_BIG5EncodingInfo * ei,
    const void * var, size_t lenvar)
{
    const char *s;
    int err;

    memset((void *)ei, 0, sizeof(*ei));
    TAILQ_INIT(&ei->excludes);

    if (lenvar > 0 && var != NULL) {
        s = _citrus_bcs_skip_ws_len((const char *)var, &lenvar);
        if (lenvar > 0 && *s != '\0') {
            err = _citrus_prop_parse_variable(
                root_hints, (void *)ei, s, lenvar);
            if (err == 0)
                return (0);

            _citrus_BIG5_encoding_module_uninit(ei);
            memset((void *)ei, 0, sizeof(*ei));
            TAILQ_INIT(&ei->excludes);
        }
    }

    /* fallback Big5-1984, for backward compatibility. */
    _citrus_BIG5_fill_rowcol(ei, "row", 0xA1, 0xFE);
    _citrus_BIG5_fill_rowcol(ei, "col", 0x40, 0x7E);
    _citrus_BIG5_fill_rowcol(ei, "col", 0xA1, 0xFE);

    return (0);
}

static int
/*ARGSUSED*/
_citrus_BIG5_mbrtowc_priv(_BIG5EncodingInfo * ei,
    _citrus_wc_t * pwc,
    char ** s, size_t n,
    _BIG5State * psenc,
    size_t * nresult)
{
    _citrus_wc_t wchar;
    char *s0;
    int c, chlenbak;

    s0 = *s;

    if (s0 == NULL) {
        _citrus_BIG5_init_state(ei, psenc);
        *nresult = 0;
        return (0);
    }

    chlenbak = psenc->chlen;

    /* make sure we have the first byte in the buffer */
    switch (psenc->chlen) {
    case 0:
        if (n < 1)
            goto restart;
        psenc->ch[0] = *s0++;
        psenc->chlen = 1;
        n--;
        break;
    case 1:
        break;
    default:
        /* illegal state */
        goto ilseq;
    }

    c = _citrus_BIG5_check(ei, psenc->ch[0] & 0xff);
    if (c == 0)
        goto ilseq;
    while (psenc->chlen < c) {
        if (n < 1) {
            goto restart;
        }
        psenc->ch[psenc->chlen] = *s0++;
        psenc->chlen++;
        n--;
    }

    switch (c) {
    case 1:
        wchar = psenc->ch[0] & 0xff;
        break;
    case 2:
        if (!_citrus_BIG5_check2(ei, psenc->ch[1] & 0xff))
            goto ilseq;
        wchar = ((psenc->ch[0] & 0xff) << 8) | (psenc->ch[1] & 0xff);
        break;
    default:
        /* illegal state */
        goto ilseq;
    }

    if (_citrus_BIG5_check_excludes(ei, (wint_t)wchar) != 0)
        goto ilseq;

    *s = s0;
    psenc->chlen = 0;
    if (pwc)
        *pwc = wchar;
    *nresult = wchar ? c - chlenbak : 0;

    return (0);

ilseq:
    psenc->chlen = 0;
    *nresult = (size_t)-1;
    return (EILSEQ);

restart:
    *s = s0;
    *nresult = (size_t)-2;
    return (0);
}

static int
/*ARGSUSED*/
_citrus_BIG5_wcrtomb_priv(_BIG5EncodingInfo * ei,
    char * s,
    size_t n, _citrus_wc_t wc, _BIG5State * psenc ,
    size_t * nresult)
{
    size_t l;
    int ret;
    (void) psenc;

    /* check invalid sequence */
    if (wc & ~0xffff ||
        _citrus_BIG5_check_excludes(ei, (wint_t)wc) != 0) {
        ret = EILSEQ;
        goto err;
    }

    if (wc & 0x8000) {
        if (_citrus_BIG5_check(ei, (wc >> 8) & 0xff) != 2 ||
            !_citrus_BIG5_check2(ei, wc & 0xff)) {
            ret = EILSEQ;
            goto err;
        }
        l = 2;
    } else {
        if (wc & ~0xff || !_citrus_BIG5_check(ei, wc & 0xff)) {
            ret = EILSEQ;
            goto err;
        }
        l = 1;
    }

    if (n < l) {
        /* bound check failure */
        ret = E2BIG;
        goto err;
    }

    if (l == 2) {
        s[0] = (wc >> 8) & 0xff;
        s[1] = wc & 0xff;
    } else
        s[0] = wc & 0xff;

    *nresult = l;

    return (0);

err:
    *nresult = (size_t)-1;
    return (ret);
}

static __inline int
/*ARGSUSED*/
_citrus_BIG5_stdenc_wctocs(_BIG5EncodingInfo * ei ,
    _citrus_csid_t * csid,
    _citrus_index_t * idx, _citrus_wc_t wc)
{
    (void) ei;
    *csid = (wc < 0x100) ? 0 : 1;
    *idx = (_citrus_index_t)wc;

    return (0);
}

static __inline int
/*ARGSUSED*/
_citrus_BIG5_stdenc_cstowc(_BIG5EncodingInfo * ei ,
    _citrus_wc_t * wc,
    _citrus_csid_t csid, _citrus_index_t idx)
{
    (void) ei;
    switch (csid) {
    case 0:
    case 1:
        *wc = (_citrus_wc_t)idx;
        break;
    default:
        return (EILSEQ);
    }

    return (0);
}

static __inline int
/*ARGSUSED*/
_citrus_BIG5_stdenc_get_state_desc_generic(_BIG5EncodingInfo * ei ,
    _BIG5State * psenc,
    int * rstate)
{
    (void) ei;
    *rstate = (psenc->chlen == 0) ? _CITRUS_STDENC_SDGEN_INITIAL :
        _CITRUS_STDENC_SDGEN_INCOMPLETE_CHAR;
    return (0);
}

/* ----------------------------------------------------------------------
 * public interface for stdenc
 */

_CITRUS_STDENC_DECLS(BIG5);
_CITRUS_STDENC_DEF_OPS(BIG5);

#include "citrus_stdenc_template.h"

Coverage Report

Created: 2026-06-30 07:05

Line	Count	Source
1		/*-
2		* Copyright (c)2002, 2006 Citrus Project,
3		* All rights reserved.
4		*
5		* Redistribution and use in source and binary forms, with or without
6		* modification, are permitted provided that the following conditions
7		* are met:
8		* 1. Redistributions of source code must retain the above copyright
9		* notice, this list of conditions and the following disclaimer.
10		* 2. Redistributions in binary form must reproduce the above copyright
11		* notice, this list of conditions and the following disclaimer in the
12		* documentation and/or other materials provided with the distribution.
13		*
14		* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15		* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16		* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17		* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18		* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19		* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20		* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22		* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23		* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24		* SUCH DAMAGE.
25		*/
26
27		/*-
28		* Copyright (c) 1993
29		* The Regents of the University of California. All rights reserved.
30		*
31		* This code is derived from software contributed to Berkeley by
32		* Paul Borman at Krystal Technologies.
33		*
34		* Redistribution and use in source and binary forms, with or without
35		* modification, are permitted provided that the following conditions
36		* are met:
37		* 1. Redistributions of source code must retain the above copyright
38		* notice, this list of conditions and the following disclaimer.
39		* 2. Redistributions in binary form must reproduce the above copyright
40		* notice, this list of conditions and the following disclaimer in the
41		* documentation and/or other materials provided with the distribution.
42		* 3. Neither the name of the University nor the names of its contributors
43		* may be used to endorse or promote products derived from this software
44		* without specific prior written permission.
45		*
46		* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
47		* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
48		* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
49		* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
50		* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
51		* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
52		* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
53		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
54		* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
55		* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
56		* SUCH DAMAGE.
57		*/
58
59		#include "dcmtk/config/osconfig.h"
60		#include "citrus_big5.h"
61
62		#ifdef HAVE_SYS_QUEUE_H
63		#include <sys/queue.h>
64		#else
65		#include "dcmtk/oficonv/queue.h"
66		#endif
67
68		#include <sys/types.h>
69		#include <errno.h>
70		#include <limits.h>
71		#include <stddef.h>
72		#include <stdint.h>
73		#include <stdio.h>
74		#include <stdlib.h>
75		#include <string.h>
76		#include <wchar.h>
77
78		#include "citrus_bcs.h"
79		#include "citrus_prop.h"
80		#include "citrus_types.h"
81		#include "citrus_module.h"
82		#include "citrus_stdenc.h"
83
84		/* ----------------------------------------------------------------------
85		* private stuffs used by templates
86		*/
87
88		typedef struct {
89		int chlen;
90		char ch[2];
91		} _BIG5State;
92
93		typedef struct _BIG5Exclude {
94		TAILQ_ENTRY(_BIG5Exclude) entry;
95		wint_t end;
96		wint_t start;
97		} _BIG5Exclude;
98
99		typedef TAILQ_HEAD(_BIG5ExcludeList, _BIG5Exclude) _BIG5ExcludeList;
100
101		typedef struct {
102		_BIG5ExcludeList excludes;
103		int cell[0x100];
104		} _BIG5EncodingInfo;
105
106		#define _CEI_TO_EI(_cei_) (&(_cei_)->ei)
107		#define _CEI_TO_STATE(_cei_, _func_) (_cei_)->states.s_##_func_
108
109	0	#define _FUNCNAME(m) _citrus_BIG5_##m
110	0	#define _ENCODING_INFO _BIG5EncodingInfo
111		#define _ENCODING_STATE _BIG5State
112	0	#define _ENCODING_MB_CUR_MAX(_ei_) 2
113		#define _ENCODING_IS_STATE_DEPENDENT 0
114		#define _STATE_NEEDS_EXPLICIT_INIT(_ps_) 0
115
116
117		static __inline void
118		/ARGSUSED/
119		_citrus_BIG5_init_state(_BIG5EncodingInfo * ei ,
120		_BIG5State * s)
121	0	{
122	0	(void) ei;
123	0	memset(s, 0, sizeof(*s));
124	0	}
125
126		#if 0
127		static __inline void
128		/ARGSUSED/
129		_citrus_BIG5_pack_state(_BIG5EncodingInfo * ei ,
130		void * pspriv,
131		const _BIG5State * s)
132		{
133		(void) ei;
134		memcpy(pspriv, (const void )s, sizeof(s));
135		}
136
137		static __inline void
138		/ARGSUSED/
139		_citrus_BIG5_unpack_state(_BIG5EncodingInfo * ei ,
140		_BIG5State * s,
141		const void * pspriv)
142		{
143		(void) ei;
144		memcpy((void )s, pspriv, sizeof(s));
145		}
146		#endif
147
148		static __inline int
149		_citrus_BIG5_check(_BIG5EncodingInfo *ei, unsigned int c)
150	0	{
151
152	0	return ((ei->cell[c & 0xFF] & 0x1) ? 2 : 1);
153	0	}
154
155		static __inline int
156		_citrus_BIG5_check2(_BIG5EncodingInfo *ei, unsigned int c)
157	0	{
158
159	0	return ((ei->cell[c & 0xFF] & 0x2) ? 1 : 0);
160	0	}
161
162		static __inline int
163		_citrus_BIG5_check_excludes(_BIG5EncodingInfo *ei, wint_t c)
164	0	{
165	0	_BIG5Exclude *exclude;
166
167	0	TAILQ_FOREACH(exclude, &ei->excludes, entry) {
168	0	if (c >= exclude->start && c <= exclude->end)
169	0	return (EILSEQ);
170	0	}
171	0	return (0);
172	0	}
173
174		static int
175		_citrus_BIG5_fill_rowcol(void * ctx, const char * s,
176		uint64_t start, uint64_t end)
177	0	{
178	0	_BIG5EncodingInfo *ei;
179	0	uint64_t n;
180	0	int i;
181
182	0	if (start > 0xFF \|\| end > 0xFF)
183	0	return (EINVAL);
184	0	ei = (_BIG5EncodingInfo *)ctx;
185	0	i = strcmp("row", s) ? 1 : 0;
186	0	i = 1 << i;
187	0	for (n = start; n <= end; ++n)
188	0	ei->cell[n & 0xFF] \|= i;
189	0	return (0);
190	0	}
191
192		static int
193		/ARGSUSED/
194		_citrus_BIG5_fill_excludes(void * ctx,
195		const char * s , uint64_t start, uint64_t end)
196	0	{
197	0	_BIG5EncodingInfo *ei;
198	0	_BIG5Exclude *exclude;
199
200	0	(void) s;
201	0	if (start > 0xFFFF \|\| end > 0xFFFF)
202	0	return (EINVAL);
203	0	ei = (_BIG5EncodingInfo *)ctx;
204	0	exclude = TAILQ_LAST(&ei->excludes, _BIG5ExcludeList);
205	0	if (exclude != NULL && (wint_t)start <= exclude->end)
206	0	return (EINVAL);
207	0	exclude = (void )malloc(sizeof(exclude));
208	0	if (exclude == NULL)
209	0	return (ENOMEM);
210	0	exclude->start = (wint_t)start;
211	0	exclude->end = (wint_t)end;
212	0	TAILQ_INSERT_TAIL(&ei->excludes, exclude, entry);
213
214	0	return (0);
215	0	}
216
217		static const _citrus_prop_hint_t root_hints[] = {
218		_CITRUS_PROP_HINT_NUM("row", &_citrus_BIG5_fill_rowcol),
219		_CITRUS_PROP_HINT_NUM("col", &_citrus_BIG5_fill_rowcol),
220		_CITRUS_PROP_HINT_NUM("excludes", &_citrus_BIG5_fill_excludes),
221		_CITRUS_PROP_HINT_END
222		};
223
224		static void
225		/ARGSUSED/
226		_citrus_BIG5_encoding_module_uninit(_BIG5EncodingInfo *ei)
227	0	{
228	0	_BIG5Exclude *exclude;
229
230	0	while ((exclude = TAILQ_FIRST(&ei->excludes)) != NULL) {
231	0	TAILQ_REMOVE(&ei->excludes, exclude, entry);
232	0	free(exclude);
233	0	}
234	0	}
235
236		static int
237		/ARGSUSED/
238		_citrus_BIG5_encoding_module_init(_BIG5EncodingInfo * ei,
239		const void * var, size_t lenvar)
240	0	{
241	0	const char *s;
242	0	int err;
243
244	0	memset((void )ei, 0, sizeof(ei));
245	0	TAILQ_INIT(&ei->excludes);
246
247	0	if (lenvar > 0 && var != NULL) {
248	0	s = _citrus_bcs_skip_ws_len((const char *)var, &lenvar);
249	0	if (lenvar > 0 && *s != '\0') {
250	0	err = _citrus_prop_parse_variable(
251	0	root_hints, (void *)ei, s, lenvar);
252	0	if (err == 0)
253	0	return (0);
254
255	0	_citrus_BIG5_encoding_module_uninit(ei);
256	0	memset((void )ei, 0, sizeof(ei));
257	0	TAILQ_INIT(&ei->excludes);
258	0	}
259	0	}
260
261		/* fallback Big5-1984, for backward compatibility. */
262	0	_citrus_BIG5_fill_rowcol(ei, "row", 0xA1, 0xFE);
263	0	_citrus_BIG5_fill_rowcol(ei, "col", 0x40, 0x7E);
264	0	_citrus_BIG5_fill_rowcol(ei, "col", 0xA1, 0xFE);
265
266	0	return (0);
267	0	}
268
269		static int
270		/ARGSUSED/
271		_citrus_BIG5_mbrtowc_priv(_BIG5EncodingInfo * ei,
272		_citrus_wc_t * pwc,
273		char ** s, size_t n,
274		_BIG5State * psenc,
275		size_t * nresult)
276	0	{
277	0	_citrus_wc_t wchar;
278	0	char *s0;
279	0	int c, chlenbak;
280
281	0	s0 = *s;
282
283	0	if (s0 == NULL) {
284	0	_citrus_BIG5_init_state(ei, psenc);
285	0	*nresult = 0;
286	0	return (0);
287	0	}
288
289	0	chlenbak = psenc->chlen;
290
291		/* make sure we have the first byte in the buffer */
292	0	switch (psenc->chlen) {
293	0	case 0:
294	0	if (n < 1)
295	0	goto restart;
296	0	psenc->ch[0] = *s0++;
297	0	psenc->chlen = 1;
298	0	n--;
299	0	break;
300	0	case 1:
301	0	break;
302	0	default:
303		/* illegal state */
304	0	goto ilseq;
305	0	}
306
307	0	c = _citrus_BIG5_check(ei, psenc->ch[0] & 0xff);
308	0	if (c == 0)
309	0	goto ilseq;
310	0	while (psenc->chlen < c) {
311	0	if (n < 1) {
312	0	goto restart;
313	0	}
314	0	psenc->ch[psenc->chlen] = *s0++;
315	0	psenc->chlen++;
316	0	n--;
317	0	}
318
319	0	switch (c) {
320	0	case 1:
321	0	wchar = psenc->ch[0] & 0xff;
322	0	break;
323	0	case 2:
324	0	if (!_citrus_BIG5_check2(ei, psenc->ch[1] & 0xff))
325	0	goto ilseq;
326	0	wchar = ((psenc->ch[0] & 0xff) << 8) \| (psenc->ch[1] & 0xff);
327	0	break;
328	0	default:
329		/* illegal state */
330	0	goto ilseq;
331	0	}
332
333	0	if (_citrus_BIG5_check_excludes(ei, (wint_t)wchar) != 0)
334	0	goto ilseq;
335
336	0	*s = s0;
337	0	psenc->chlen = 0;
338	0	if (pwc)
339	0	*pwc = wchar;
340	0	*nresult = wchar ? c - chlenbak : 0;
341
342	0	return (0);
343
344	0	ilseq:
345	0	psenc->chlen = 0;
346	0	*nresult = (size_t)-1;
347	0	return (EILSEQ);
348
349	0	restart:
350	0	*s = s0;
351	0	*nresult = (size_t)-2;
352	0	return (0);
353	0	}
354
355		static int
356		/ARGSUSED/
357		_citrus_BIG5_wcrtomb_priv(_BIG5EncodingInfo * ei,
358		char * s,
359		size_t n, _citrus_wc_t wc, _BIG5State * psenc ,
360		size_t * nresult)
361	0	{
362	0	size_t l;
363	0	int ret;
364	0	(void) psenc;
365
366		/* check invalid sequence */
367	0	if (wc & ~0xffff \|\|
368	0	_citrus_BIG5_check_excludes(ei, (wint_t)wc) != 0) {
369	0	ret = EILSEQ;
370	0	goto err;
371	0	}
372
373	0	if (wc & 0x8000) {
374	0	if (_citrus_BIG5_check(ei, (wc >> 8) & 0xff) != 2 \|\|
375	0	!_citrus_BIG5_check2(ei, wc & 0xff)) {
376	0	ret = EILSEQ;
377	0	goto err;
378	0	}
379	0	l = 2;
380	0	} else {
381	0	if (wc & ~0xff \|\| !_citrus_BIG5_check(ei, wc & 0xff)) {
382	0	ret = EILSEQ;
383	0	goto err;
384	0	}
385	0	l = 1;
386	0	}
387
388	0	if (n < l) {
389		/* bound check failure */
390	0	ret = E2BIG;
391	0	goto err;
392	0	}
393
394	0	if (l == 2) {
395	0	s[0] = (wc >> 8) & 0xff;
396	0	s[1] = wc & 0xff;
397	0	} else
398	0	s[0] = wc & 0xff;
399
400	0	*nresult = l;
401
402	0	return (0);
403
404	0	err:
405	0	*nresult = (size_t)-1;
406	0	return (ret);
407	0	}
408
409		static __inline int
410		/ARGSUSED/
411		_citrus_BIG5_stdenc_wctocs(_BIG5EncodingInfo * ei ,
412		_citrus_csid_t * csid,
413		_citrus_index_t * idx, _citrus_wc_t wc)
414	0	{
415	0	(void) ei;
416	0	*csid = (wc < 0x100) ? 0 : 1;
417	0	*idx = (_citrus_index_t)wc;
418
419	0	return (0);
420	0	}
421
422		static __inline int
423		/ARGSUSED/
424		_citrus_BIG5_stdenc_cstowc(_BIG5EncodingInfo * ei ,
425		_citrus_wc_t * wc,
426		_citrus_csid_t csid, _citrus_index_t idx)
427	0	{
428	0	(void) ei;
429	0	switch (csid) {
430	0	case 0:
431	0	case 1:
432	0	*wc = (_citrus_wc_t)idx;
433	0	break;
434	0	default:
435	0	return (EILSEQ);
436	0	}
437
438	0	return (0);
439	0	}
440
441		static __inline int
442		/ARGSUSED/
443		_citrus_BIG5_stdenc_get_state_desc_generic(_BIG5EncodingInfo * ei ,
444		_BIG5State * psenc,
445		int * rstate)
446	0	{
447	0	(void) ei;
448	0	*rstate = (psenc->chlen == 0) ? _CITRUS_STDENC_SDGEN_INITIAL :
449	0	_CITRUS_STDENC_SDGEN_INCOMPLETE_CHAR;
450	0	return (0);
451	0	}
452
453		/* ----------------------------------------------------------------------
454		* public interface for stdenc
455		*/
456
457		_CITRUS_STDENC_DECLS(BIG5);
458		_CITRUS_STDENC_DEF_OPS(BIG5);
459
460		#include "citrus_stdenc_template.h"