Home | History | Annotate | Line # | Download | only in citrus
citrus_stdenc.c revision 1.1 
      1 /*	$NetBSD: citrus_stdenc.c,v 1.1 2003/06/25 09:51:40 tshiozak Exp $	*/
      2 
      3 /*-
      4  * Copyright (c)2003 Citrus Project,
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 #if defined(LIBC_SCCS) && !defined(lint)
     31 __RCSID("$NetBSD: citrus_stdenc.c,v 1.1 2003/06/25 09:51:40 tshiozak Exp $");
     32 #endif /* LIBC_SCCS and not lint */
     33 
     34 #include "namespace.h"
     35 #include <assert.h>
     36 #include <errno.h>
     37 #include <stdlib.h>
     38 #include <string.h>
     39 
     40 #include "citrus_namespace.h"
     41 #include "citrus_types.h"
     42 #include "citrus_module.h"
     43 #include "citrus_stdenc.h"
     44 #include "citrus_none.h"
     45 
     46 struct _citrus_stdenc _citrus_stdenc_default = {
     47 	&_citrus_NONE_stdenc_ops,	/* ce_ops */
     48 	NULL,				/* ce_closure */
     49 	NULL,				/* ce_module */
     50 	&_citrus_NONE_stdenc_traits,	/* ce_traits */
     51 };
     52 
     53 #ifdef _I18N_DYNAMIC
     54 
     55 int
     56 _citrus_stdenc_open(struct _citrus_stdenc * __restrict * __restrict rce,
     57 		    char const * __restrict encname,
     58 		    const void * __restrict variable, size_t lenvar)
     59 {
     60 	int ret;
     61 	_citrus_module_t handle;
     62 	struct _citrus_stdenc *ce;
     63 	_citrus_stdenc_getops_t getops;
     64 
     65 	_DIAGASSERT(encname != NULL);
     66 	_DIAGASSERT(!lenvar || variable!=NULL);
     67 	_DIAGASSERT(rcc != NULL);
     68 
     69 	if (!strcmp(encname, _CITRUS_DEFAULT_STDENC_NAME)) {
     70 		*rce = &_citrus_stdenc_default;
     71 		return (0);
     72 	}
     73 	ce = malloc(sizeof(*ce));
     74 	if (ce==NULL) {
     75 		ret = errno;
     76 		goto bad;
     77 	}
     78 	ce->ce_ops = NULL;
     79 	ce->ce_closure = NULL;
     80 	ce->ce_module = NULL;
     81 	ce->ce_traits = NULL;
     82 
     83 	ret = _citrus_load_module(&handle, encname);
     84 	if (ret)
     85 		goto bad;
     86 
     87 	ce->ce_module = handle;
     88 
     89 	getops =
     90 	    (_citrus_stdenc_getops_t)_citrus_find_getops(ce->ce_module,
     91 							 encname, "stdenc");
     92 	if (getops == NULL) {
     93 		ret = EINVAL;
     94 		goto bad;
     95 	}
     96 
     97 	ce->ce_ops = (struct _citrus_stdenc_ops *)malloc(sizeof(*ce->ce_ops));
     98 	if (ce->ce_ops == NULL) {
     99 		ret = errno;
    100 		goto bad;
    101 	}
    102 
    103 	ret = (*getops)(ce->ce_ops, sizeof(*ce->ce_ops),
    104 			_CITRUS_STDENC_ABI_VERSION);
    105 	if (ret)
    106 		goto bad;
    107 
    108 	/* If return ABI version is not expected, should fixup it */
    109 
    110 	/* validation check */
    111 	if (ce->ce_ops->eo_init == NULL ||
    112 	    ce->ce_ops->eo_uninit == NULL ||
    113 	    ce->ce_ops->eo_init_state == NULL ||
    114 	    ce->ce_ops->eo_mbtocs == NULL ||
    115 	    ce->ce_ops->eo_cstomb == NULL ||
    116 	    ce->ce_ops->eo_mbtowc == NULL ||
    117 	    ce->ce_ops->eo_wctomb == NULL)
    118 		goto bad;
    119 
    120 	/* allocate traits */
    121 	ce->ce_traits = malloc(sizeof(*ce->ce_traits));
    122 	if (ce->ce_traits == NULL) {
    123 		ret = errno;
    124 		goto bad;
    125 	}
    126 	/* init and get closure */
    127 	ret = (*ce->ce_ops->eo_init)(ce, variable, lenvar, ce->ce_traits);
    128 	if (ret)
    129 		goto bad;
    130 
    131 	*rce = ce;
    132 
    133 	return (0);
    134 
    135 bad:
    136 	_citrus_stdenc_close(ce);
    137 	return (ret);
    138 }
    139 
    140 void
    141 _citrus_stdenc_close(struct _citrus_stdenc *ce)
    142 {
    143 
    144 	_DIAGASSERT(ci != NULL);
    145 
    146 	if (ce == &_citrus_stdenc_default)
    147 		return;
    148 
    149 	if (ce->ce_module) {
    150 		if (ce->ce_ops) {
    151 			if (ce->ce_closure && ce->ce_ops->eo_uninit)
    152 				(*ce->ce_ops->eo_uninit)(ce);
    153 			free(ce->ce_ops);
    154 		}
    155 		free(ce->ce_traits);
    156 		_citrus_unload_module(ce->ce_module);
    157 	}
    158 	free(ce);
    159 }
    160 
    161 #else
    162 /* !_I18N_DYNAMIC */
    163 
    164 int
    165 /*ARGSUSED*/
    166 _citrus_stdenc_open(struct _citrus_stdenc * __restrict * __restrict rce,
    167 		    char const * __restrict encname,
    168 		    const void * __restrict variable, size_t lenvar)
    169 {
    170 	if (!strcmp(encname, _CITRUS_DEFAULT_STDENC_NAME)) {
    171 		*rce = &_citrus_stdenc_default;
    172 		return (0);
    173 	}
    174 	return (EINVAL);
    175 }
    176 
    177 void
    178 /*ARGSUSED*/
    179 _citrus_stdenc_close(struct _citrus_stdenc *ce)
    180 {
    181 }
    182 
    183 #endif
    184