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iconv.c revision 1.6 
      1 /*	$NetBSD: iconv.c,v 1.6 2006/11/03 20:16:28 christos 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: iconv.c,v 1.6 2006/11/03 20:16:28 christos Exp $");
     32 #endif /* LIBC_SCCS and not lint */
     33 
     34 #include "namespace.h"
     35 #include <assert.h>
     36 #include <errno.h>
     37 #include <paths.h>
     38 #include <sys/queue.h>
     39 
     40 #include <iconv.h>
     41 
     42 #ifdef __weak_alias
     43 __weak_alias(iconv, _iconv)
     44 __weak_alias(iconv_open, _iconv_open)
     45 __weak_alias(iconv_close, _iconv_close)
     46 #endif
     47 
     48 #ifdef CITRUS_ICONV
     49 #include <sys/types.h>
     50 #include <citrus/citrus_types.h>
     51 #include <citrus/citrus_module.h>
     52 #include <citrus/citrus_esdb.h>
     53 #include <citrus/citrus_hash.h>
     54 #include <citrus/citrus_iconv.h>
     55 
     56 #define ISBADF(_h_)	(!(_h_) || (_h_) == (iconv_t)-1)
     57 
     58 
     59 iconv_t
     60 iconv_open(const char *out, const char *in)
     61 {
     62 	int ret;
     63 	struct _citrus_iconv *handle;
     64 
     65 	ret = _citrus_iconv_open(&handle, _PATH_ICONV, in, out);
     66 	if (ret) {
     67 		errno = ret == ENOENT? EINVAL : ret;
     68 		return ((iconv_t)-1);
     69 	}
     70 
     71 	return ((iconv_t)(void *)handle);
     72 }
     73 
     74 int
     75 iconv_close(iconv_t handle)
     76 {
     77 	if (ISBADF(handle)) {
     78 		errno = EBADF;
     79 		return (-1);
     80 	}
     81 
     82 	_citrus_iconv_close((struct _citrus_iconv *)(void *)handle);
     83 
     84 	return (0);
     85 }
     86 
     87 size_t
     88 iconv(iconv_t handle, const char **in, size_t *szin, char **out, size_t *szout)
     89 {
     90 	int err;
     91 	size_t ret;
     92 
     93 	if (ISBADF(handle)) {
     94 		errno = EBADF;
     95 		return ((size_t)-1);
     96 	}
     97 
     98 	err = _citrus_iconv_convert(
     99 		(struct _citrus_iconv *)(void *)handle, in, szin, out, szout,
    100 		0, &ret);
    101 	if (err) {
    102 		errno = err;
    103 		ret = (size_t)-1;
    104 	}
    105 
    106 	return (ret);
    107 }
    108 
    109 size_t
    110 __iconv(iconv_t handle, const char **in, size_t *szin, char **out,
    111 	size_t *szout, u_int32_t flags, size_t *invalids)
    112 {
    113 	int err;
    114 	size_t ret;
    115 
    116 	if (ISBADF(handle)) {
    117 		errno = EBADF;
    118 		return ((size_t)-1);
    119 	}
    120 
    121 	err = _citrus_iconv_convert(
    122 		(struct _citrus_iconv *)(void *)handle, in, szin, out, szout,
    123 		flags, &ret);
    124 	if (invalids)
    125 		*invalids = ret;
    126 	if (err) {
    127 		errno = err;
    128 		ret = (size_t)-1;
    129 	}
    130 
    131 	return (ret);
    132 }
    133 
    134 int
    135 __iconv_get_list(char ***rlist, size_t *rsz)
    136 {
    137 	int ret;
    138 
    139 	ret = _citrus_esdb_get_list(rlist, rsz);
    140 	if (ret) {
    141 		errno = ret;
    142 		return -1;
    143 	}
    144 
    145 	return 0;
    146 }
    147 
    148 void
    149 __iconv_free_list(char **list, size_t sz)
    150 {
    151 	_citrus_esdb_free_list(list, sz);
    152 }
    153 
    154 #else
    155 iconv_t
    156 /*ARGSUSED*/
    157 iconv_open(const char *in, const char *out)
    158 {
    159 	errno = EINVAL;
    160 	return ((iconv_t)-1);
    161 }
    162 int
    163 /*ARGSUSED*/
    164 iconv_close(iconv_t handle)
    165 {
    166 	errno = EBADF;
    167 	return (-1);
    168 }
    169 size_t
    170 /*ARGSUSED*/
    171 iconv(iconv_t handle, const char **in, size_t *szin, char **out, size_t *szout)
    172 {
    173 	errno = EBADF;
    174 	return ((size_t)-1);
    175 }
    176 int
    177 /*ARGSUSED*/
    178 __iconv_get_list(char ***rlist, size_t *rsz)
    179 {
    180 	errno = EINVAL;
    181 	return -1;
    182 }
    183 void
    184 /*ARGSUSED*/
    185 __iconv_free_list(char **list, size_t sz)
    186 {
    187 }
    188 #endif
    189