lib/libc/iconv/iconv.c

   1 /*      $NetBSD: iconv.c,v 1.13 2012/01/20 16:31:29 joerg 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 1.13 2012/01/20 16:31:29 joerg 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 #include <sys/types.h>
  49 #include "citrus_types.h"
  50 #include "citrus_module.h"
  51 #include "citrus_esdb.h"
  52 #include "citrus_hash.h"
  53 #include "citrus_iconv.h"
  54
  55 #define ISBADF(_h_)     (!(_h_) || (_h_) == (iconv_t)-1)
  56
  57
  58 iconv_t
  59 iconv_open(const char *out, const char *in)
  60 {
  61         int ret;
  62         struct _citrus_iconv *handle;
  63
  64         ret = _citrus_iconv_open(&handle, _PATH_ICONV, in, out);
  65         if (ret) {
  66                 errno = ret == ENOENT? EINVAL : ret;
  67                 return ((iconv_t)-1);
  68         }
  69
  70         return ((iconv_t)(void *)handle);
  71 }
  72
  73 int
  74 iconv_close(iconv_t handle)
  75 {
  76         if (ISBADF(handle)) {
  77                 errno = EBADF;
  78                 return (-1);
  79         }
  80
  81         _citrus_iconv_close((struct _citrus_iconv *)(void *)handle);
  82
  83         return (0);
  84 }
  85
  86 size_t
  87 iconv(iconv_t handle, const char **in, size_t *szin, char **out, size_t *szout)
  88 {
  89         int err;
  90         size_t ret;
  91
  92         if (ISBADF(handle)) {
  93                 errno = EBADF;
  94                 return ((size_t)-1);
  95         }
  96
  97         err = _citrus_iconv_convert(
  98                 (struct _citrus_iconv *)(void *)handle, in, szin, out, szout,
  99                 0, &ret);
 100         if (err) {
 101                 errno = err;
 102                 ret = (size_t)-1;
 103         }
 104
 105         return (ret);
 106 }
 107
 108 size_t
 109 __iconv(iconv_t handle, const char **in, size_t *szin, char **out,
 110         size_t *szout, u_int32_t flags, size_t *invalids)
 111 {
 112         int err;
 113         size_t ret;
 114
 115         if (ISBADF(handle)) {
 116                 errno = EBADF;
 117                 return ((size_t)-1);
 118         }
 119
 120         err = _citrus_iconv_convert(
 121                 (struct _citrus_iconv *)(void *)handle, in, szin, out, szout,
 122                 flags, &ret);
 123         if (invalids)
 124                 *invalids = ret;
 125         if (err) {
 126                 errno = err;
 127                 ret = (size_t)-1;
 128         }
 129
 130         return (ret);
 131 }
 132
 133 int
 134 __iconv_get_list(char ***rlist, size_t *rsz)
 135 {
 136         int ret;
 137
 138         ret = _citrus_esdb_get_list(rlist, rsz);
 139         if (ret) {
 140                 errno = ret;
 141                 return -1;
 142         }
 143
 144         return 0;
 145 }
 146
 147 void
 148 __iconv_free_list(char **list, size_t sz)
 149 {
 150         _citrus_esdb_free_list(list, sz);
 151 }