lib/i18n_module/iconv_none/citrus_iconv_none.c

   1 /* $FreeBSD: head/lib/libiconv_modules/iconv_none/citrus_iconv_none.c 281550 2015-04-15 09:09:20Z tijl $ */
   2 /*      $NetBSD: citrus_iconv_none.c,v 1.3 2011/05/23 14:45:44 joerg 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/cdefs.h>
  31 #include <sys/queue.h>
  32
  33 #include <assert.h>
  34 #include <errno.h>
  35 #include <stdbool.h>
  36 #include <stdlib.h>
  37 #include <string.h>
  38
  39 #include "citrus_types.h"
  40 #include "citrus_module.h"
  41 #include "citrus_hash.h"
  42 #include "citrus_iconv.h"
  43 #include "citrus_iconv_none.h"
  44
  45 /* ---------------------------------------------------------------------- */
  46
  47 _CITRUS_ICONV_DECLS(iconv_none);
  48 _CITRUS_ICONV_DEF_OPS(iconv_none);
  49
  50
  51 /* ---------------------------------------------------------------------- */
  52
  53 int
  54 _citrus_iconv_none_iconv_getops(struct _citrus_iconv_ops *ops)
  55 {
  56
  57         memcpy(ops, &_citrus_iconv_none_iconv_ops,
  58                sizeof(_citrus_iconv_none_iconv_ops));
  59
  60         return (0);
  61 }
  62
  63 static int
  64 /*ARGSUSED*/
  65 _citrus_iconv_none_iconv_init_shared(
  66     struct _citrus_iconv_shared * __restrict ci,
  67     const char * __restrict in __unused, const char * __restrict out __unused)
  68 {
  69
  70         ci->ci_closure = NULL;
  71         return (0);
  72 }
  73
  74 static void
  75 /*ARGSUSED*/
  76 _citrus_iconv_none_iconv_uninit_shared(struct _citrus_iconv_shared *ci __unused)
  77 {
  78
  79 }
  80
  81 static int
  82 /*ARGSUSED*/
  83 _citrus_iconv_none_iconv_init_context(struct _citrus_iconv *cv)
  84 {
  85
  86         cv->cv_closure = NULL;
  87         return (0);
  88 }
  89
  90 static void
  91 /*ARGSUSED*/
  92 _citrus_iconv_none_iconv_uninit_context(struct _citrus_iconv *cv __unused)
  93 {
  94
  95 }
  96
  97 static int
  98 /*ARGSUSED*/
  99 _citrus_iconv_none_iconv_convert(struct _citrus_iconv * __restrict ci __unused,
 100     char * __restrict * __restrict in, size_t * __restrict inbytes,
 101     char * __restrict * __restrict out, size_t * __restrict outbytes,
 102     uint32_t flags __unused, size_t * __restrict invalids)
 103 {
 104         size_t len;
 105         int e2big;
 106
 107         if ((in == NULL) || (out == NULL) || (inbytes == NULL))
 108                 return (0);
 109         if ((*in == NULL) || (*out == NULL) || (*inbytes == 0) || (*outbytes == 0))
 110                 return (0);
 111         len = *inbytes;
 112         e2big = 0;
 113         if (*outbytes<len) {
 114                 e2big = 1;
 115                 len = *outbytes;
 116         }
 117         memcpy(*out, *in, len);
 118         in += len;
 119         *inbytes -= len;
 120         out += len;
 121         *outbytes -= len;
 122         *invalids = 0;
 123         if (e2big)
 124                 return (E2BIG);
 125
 126         return (0);
 127 }