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/*-
* Copyright (c) 1999,2000
* Konstantin Chuguev. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* iconv (Charset Conversion Library) v2.0
*/
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <reent.h>
#include <limits.h>
#include "local.h"
static iconv_converter_t *
_DEFUN(converter_init, (rptr, conv_func, close_func, extra),
struct _reent *rptr _AND
iconv_conv_t conv_func _AND
iconv_close_t close_func _AND
size_t extra)
{
iconv_converter_t *res = _malloc_r(rptr, sizeof(iconv_converter_t) + extra);
memset(res, 0, sizeof(iconv_converter_t) + extra);
if (res) {
res->convert = conv_func;
res->close = close_func;
}
return res;
}
static int
_DEFUN(unicode_close, (rptr, data),
struct _reent *rptr _AND
_VOID_PTR data)
{
int res;
unicode_converter_t *uc = (unicode_converter_t *)data;
res = ICONV_CES_CLOSE(rptr, &(uc->from));
res = ICONV_CES_CLOSE(rptr, &(uc->to)) || res;
return res;
}
static size_t
_DEFUN(unicode_conv, (rptr, data, inbuf, inbytesleft, outbuf, outbytesleft),
struct _reent *rptr _AND
_VOID_PTR data _AND
_CONST unsigned char **inbuf _AND
size_t *inbytesleft _AND
unsigned char **outbuf _AND
size_t *outbytesleft)
{
size_t res = 0;
unicode_converter_t *uc = (unicode_converter_t *)data;
if (inbuf == NULL || *inbuf == NULL) {
if (ICONV_CES_CONVERT_FROM_UCS(&(uc->to), UCS_CHAR_NONE,
outbuf, outbytesleft) <= 0) {
__errno_r(rptr) = E2BIG;
return (size_t)(-1);
}
ICONV_CES_RESET(&(uc->from));
ICONV_CES_RESET(&(uc->to));
return res;
}
if (inbytesleft == NULL || *inbytesleft == 0)
return 0;
while (*inbytesleft > 0) {
ssize_t size;
_CONST unsigned char *ptr = *inbuf;
ucs_t ch = ICONV_CES_CONVERT_TO_UCS(&(uc->from), inbuf,
inbytesleft);
if (ch == UCS_CHAR_NONE) {
/* Incomplete character in input buffer */
__errno_r(rptr) = EINVAL;
return (size_t)(-1);
}
if (ch == UCS_CHAR_INVALID) {
/* Invalid character in source buffer */
*inbytesleft += *inbuf - ptr;
*inbuf = ptr;
__errno_r(rptr) = EILSEQ;
return (size_t)(-1);
}
size = ICONV_CES_CONVERT_FROM_UCS(&(uc->to), ch,
outbuf, outbytesleft);
if (size < 0) {
/* No equivalent in destination charset. */
size = ICONV_CES_CONVERT_FROM_UCS(&(uc->to),
uc->missing,
outbuf, outbytesleft);
if (size)
res ++;
}
if (!size) {
/* Not enough space in output buffer */
*inbytesleft += *inbuf - ptr;
*inbuf = ptr;
__errno_r(rptr) = E2BIG;
return (size_t)(-1);
}
}
return res;
}
iconv_converter_t *
_DEFUN(_iconv_unicode_conv_init, (rptr, to, from),
struct _reent *rptr _AND
_CONST char *to _AND
_CONST char *from)
{
unicode_converter_t *uc;
iconv_converter_t *ic = converter_init(rptr, unicode_conv, unicode_close,
sizeof(unicode_converter_t));
if (ic == NULL)
return NULL;
uc = (unicode_converter_t *)(ic + 1);
if (!_iconv_ces_init(rptr, &(uc->from), from)) {
if(!_iconv_ces_init(rptr, &(uc->to), to))
{
uc->missing = '_';
return ic;
}
ICONV_CES_CLOSE(rptr, &(uc->from));
}
_free_r(rptr, ic);
return NULL;
}
static int
_DEFUN(null_close, (rptr, data),
struct _reent *rptr _AND
_VOID_PTR data)
{
return 0;
}
static size_t
_DEFUN(null_conv, (rptr, data, inbuf, inbytesleft, outbuf, outbytesleft),
struct _reent *rptr _AND
_VOID_PTR data _AND
_CONST unsigned char **inbuf _AND
size_t *inbytesleft _AND
unsigned char **outbuf _AND
size_t *outbytesleft)
{
if (inbuf && *inbuf && inbytesleft && *inbytesleft > 0 && outbuf
&& *outbuf && outbytesleft) {
size_t result, len;
if (*inbytesleft < *outbytesleft) {
result = 0;
len = *inbytesleft;
} else {
result = (size_t)(-1);
__errno_r(rptr) = E2BIG;
len = *outbytesleft;
}
bcopy(*inbuf, *outbuf, len);
*inbuf += len;
*inbytesleft -= len;
*outbuf += len;
*outbytesleft -= len;
return result;
}
return 0;
}
iconv_converter_t *
_DEFUN(_iconv_null_conv_init, (rptr, to, from),
struct _reent *rptr _AND
_CONST char *to _AND
_CONST char *from)
{
return converter_init(rptr, null_conv, null_close, 0);
}
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