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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [iconv/] [ces/] [ucs-2.c] - Blame information for rev 258

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Line No. Rev Author Line
1 207 jeremybenn
/*
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 * Copyright (c) 2003-2004, Artem B. Bityuckiy
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 * Copyright (c) 1999,2000, Konstantin Chuguev. All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include "cesbi.h"
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#if defined (ICONV_TO_UCS_CES_UCS_2) \
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 || defined (ICONV_FROM_UCS_CES_UCS_2)
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#include <_ansi.h>
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#include <reent.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include "../lib/local.h"
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#include "../lib/ucsconv.h"
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#include "../lib/endian.h"
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/*
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 * BOM isn't supported. UCS-2 is Big Endian. Bad codes are rejected.
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 * Bad codes: 0xFFFF, 0xFFFE, 0xD800-0xDFFF.
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 */
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#define UCS_2_BIG_ENDIAN     0
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#define UCS_2_LITTLE_ENDIAN  1
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#define UCS_2   "ucs_2"
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#define UCS_2BE "ucs_2be"
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#define UCS_2LE "ucs_2le"
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static _VOID_PTR
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_DEFUN(ucs_2_init, (rptr, encoding),
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                   struct _reent *rptr _AND
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                   _CONST char *encoding)
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{
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  int *data;
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  if ((data = (int *) _malloc_r(rptr, sizeof (int))) == NULL)
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    return (_VOID_PTR)NULL;
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  if (strcmp (encoding, UCS_2LE) == 0)
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    *data = UCS_2_LITTLE_ENDIAN;
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  else
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    *data = UCS_2_BIG_ENDIAN;
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  return (_VOID_PTR)data;
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}
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static size_t
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_DEFUN(ucs_2_close, (rptr, data),
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                    struct _reent *rptr _AND
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                    _VOID_PTR data)
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{
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  _free_r (rptr, data);
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  return 0;
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}
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#if defined (ICONV_FROM_UCS_CES_UCS_2)
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static size_t
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_DEFUN(ucs_2_convert_from_ucs, (data, in, outbuf, outbytesleft),
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                               _VOID_PTR data         _AND
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                               ucs4_t in              _AND
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                               unsigned char **outbuf _AND
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                               size_t *outbytesleft)
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{
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  if ((in  >= 0x0000D800 && in <= 0x0000DFFF) /* Surrogate character */
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      || in >= 0x0000FFFE)
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    return (size_t)ICONV_CES_INVALID_CHARACTER;
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  if (*outbytesleft < sizeof (ucs2_t))
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    return (size_t)ICONV_CES_NOSPACE;
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  if (*((int *)data) == UCS_2_BIG_ENDIAN)
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    *((ucs2_t *)(*outbuf)) = ICONV_HTOBES ((ucs2_t)in);
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  else
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    *((ucs2_t *)(*outbuf)) = ICONV_HTOLES ((ucs2_t)in);
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  *outbuf += sizeof (ucs2_t);
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  *outbytesleft -= sizeof (ucs2_t);
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  return sizeof (ucs2_t);
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}
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#endif /* ICONV_FROM_UCS_CES_UCS_2 */
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#if defined (ICONV_TO_UCS_CES_UCS_2)
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static ucs4_t
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_DEFUN(ucs_2_convert_to_ucs, (data, inbuf, inbytesleft),
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                             _VOID_PTR data               _AND
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                             _CONST unsigned char **inbuf _AND
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                             size_t *inbytesleft)
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{
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  ucs4_t res;
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  if (*inbytesleft < sizeof (ucs2_t))
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    return (ucs4_t)ICONV_CES_BAD_SEQUENCE;
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  if (*((int *)data) == UCS_2_BIG_ENDIAN)
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    res = (ucs4_t)ICONV_BETOHS (*((ucs2_t *)(*inbuf)));
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  else
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    res = (ucs4_t)ICONV_LETOHS (*((ucs2_t *)(*inbuf)));
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  if ((res  >= 0x0000D800 && res <= 0x0000DFFF) /* Surrogate character */
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      || res >= 0x0000FFFE)
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    return (ucs4_t)ICONV_CES_INVALID_CHARACTER;
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  *inbytesleft -= sizeof (ucs2_t);
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  *inbuf += sizeof (ucs2_t);
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  return res;
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}
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#endif /* ICONV_TO_UCS_CES_UCS_2 */
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static int
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_DEFUN(ucs_2_get_mb_cur_max, (data),
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                             _VOID_PTR data)
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{
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  return 2;
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}
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#if defined (ICONV_TO_UCS_CES_UCS_2)
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_CONST iconv_to_ucs_ces_handlers_t
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_iconv_to_ucs_ces_handlers_ucs_2 =
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{
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  ucs_2_init,
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  ucs_2_close,
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  ucs_2_get_mb_cur_max,
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  NULL,
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  NULL,
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  NULL,
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  ucs_2_convert_to_ucs
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};
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#endif
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#if defined (ICONV_FROM_UCS_CES_UCS_2)
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_CONST iconv_from_ucs_ces_handlers_t
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_iconv_from_ucs_ces_handlers_ucs_2 =
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{
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  ucs_2_init,
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  ucs_2_close,
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  ucs_2_get_mb_cur_max,
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  NULL,
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  NULL,
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  NULL,
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  ucs_2_convert_from_ucs
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};
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#endif
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#endif /* ICONV_TO_UCS_CES_UCS_2 || ICONV_FROM_UCS_CES_UCS_2 */
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