lib/libc/citrus/modules/citrus_iconv_none.c

   1 /* $NetBSD: src/lib/libc/citrus/modules/citrus_iconv_none.c,v 1.2 2003/07/01 09:42:16 tshiozak Exp $ */
   2 /* $DragonFly: src/lib/libc/citrus/modules/citrus_iconv_none.c,v 1.2 2008/04/10 10:21:01 hasso Exp $ */
   3
   4 /*-
   5  * Copyright (c)2003 Citrus Project,
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #include <sys/types.h>
  31 #include <sys/queue.h>
  32 #include <assert.h>
  33 #include <errno.h>
  34 #include <stdlib.h>
  35 #include <string.h>
  36
  37 #include "citrus_types.h"
  38 #include "citrus_module.h"
  39 #include "citrus_hash.h"
  40 #include "citrus_iconv.h"
  41 #include "citrus_iconv_none.h"
  42
  43 /* ---------------------------------------------------------------------- */
  44
  45 _CITRUS_ICONV_DECLS(iconv_none);
  46 _CITRUS_ICONV_DEF_OPS(iconv_none);
  47
  48
  49 /* ---------------------------------------------------------------------- */
  50
  51 int
  52 _citrus_iconv_none_iconv_getops(struct _citrus_iconv_ops *ops, size_t lenops,
  53                                 uint32_t expected_version)
  54 {
  55         if (expected_version<_CITRUS_ICONV_ABI_VERSION || lenops<sizeof(*ops))
  56                 return (EINVAL);
  57
  58         memcpy(ops, &_citrus_iconv_none_iconv_ops,
  59                sizeof(_citrus_iconv_none_iconv_ops));
  60
  61         return (0);
  62 }
  63
  64 static int
  65 /*ARGSUSED*/
  66 _citrus_iconv_none_iconv_init_shared(
  67         struct _citrus_iconv_shared * __restrict ci,
  68         const char * __restrict curdir,
  69         const char * __restrict in, const char * __restrict out,
  70         const void * __restrict var, size_t lenvar)
  71 {
  72         ci->ci_closure = NULL;
  73         return 0;
  74 }
  75
  76 static void
  77 /*ARGSUSED*/
  78 _citrus_iconv_none_iconv_uninit_shared(struct _citrus_iconv_shared *ci)
  79 {
  80 }
  81
  82 static int
  83 /*ARGSUSED*/
  84 _citrus_iconv_none_iconv_init_context(struct _citrus_iconv *cv)
  85 {
  86         cv->cv_closure = NULL;
  87 }
  88
  89 static void
  90 /*ARGSUSED*/
  91 _citrus_iconv_none_iconv_uninit_context(struct _citrus_iconv *cv)
  92 {
  93 }
  94
  95 static int
  96 /*ARGSUSED*/
  97 _citrus_iconv_none_iconv_convert(struct _citrus_iconv * __restrict ci,
  98                                  const char * __restrict * __restrict in,
  99                                  size_t * __restrict inbytes,
 100                                  char * __restrict * __restrict out,
 101                                  size_t * __restrict outbytes,
 102                                  u_int32_t flags, size_t * __restrict invalids)
 103 {
 104         int e2big;
 105         size_t len;
 106
 107         len = *inbytes;
 108         e2big = 0;
 109         if (*outbytes<len) {
 110                 e2big = 1;
 111                 len = *outbytes;
 112         }
 113         memcpy(*out, *in, len);
 114         in += len;
 115         *inbytes -= len;
 116         out+=len;
 117         *outbytes -= len;
 118         *invalids = 0;
 119         if (e2big) {
 120                 return (E2BIG);
 121         }
 122
 123         return (0);
 124 }