lib/libc/iconv/iconv.c

   1 /*      $NetBSD: iconv.c,v 1.8 2009/01/11 02:46:28 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 1.8 2009/01/11 02:46:28 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 HAVE_CITRUS
  49 #include <sys/types.h>
  50 #include "citrus_types.h"
  51 #include "citrus_module.h"
  52 #include "citrus_esdb.h"
  53 #include "citrus_hash.h"
  54 #include "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