136 lines
3.5 KiB
C
136 lines
3.5 KiB
C
/*
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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 <_ansi.h>
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#include <reent.h>
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#include <sys/types.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include "local.h"
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#include "conv.h"
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static int null_conversion_dummy_data;
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static void *
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null_conversion_open (struct _reent *rptr,
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const char *to,
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const char *from)
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{
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return (void *)&null_conversion_dummy_data;
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}
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static size_t
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null_conversion_close (struct _reent *rptr,
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void *data)
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{
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return 0;
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}
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static size_t
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null_conversion_convert (struct _reent *rptr,
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void *data,
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const unsigned char **inbuf,
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size_t *inbytesleft,
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unsigned char **outbuf,
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size_t *outbytesleft,
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int flags)
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{
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size_t result;
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size_t len;
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if (*inbytesleft < *outbytesleft)
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{
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result = 0;
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len = *inbytesleft;
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}
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else
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{
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result = (size_t)-1;
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len = *outbytesleft;
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__errno_r (rptr) = E2BIG;
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}
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if ((flags & 1) == 0)
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memcpy (*outbuf, *inbuf, len);
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*inbuf += len;
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*outbuf += len;
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*inbytesleft -= len;
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*outbytesleft -= len;
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return result;
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}
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static int
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null_conversion_get_mb_cur_max (void *data,
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int direction)
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{
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return ICONV_MB_LEN_MAX;
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}
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static void
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null_conversion_get_state (void *data,
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mbstate_t *state,
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int direction)
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{
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return;
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}
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static int
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null_conversion_set_state (void *data,
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mbstate_t *state,
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int direction)
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{
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return 0;
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}
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static int
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null_conversion_is_stateful (void *data,
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int direction)
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{
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return 0;
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}
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/* Null conversion definition object */
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const iconv_conversion_handlers_t
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_iconv_null_conversion_handlers =
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{
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null_conversion_open,
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null_conversion_close,
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null_conversion_convert,
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null_conversion_get_state,
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null_conversion_set_state,
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null_conversion_get_mb_cur_max,
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null_conversion_is_stateful
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};
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