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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*
* This program assumes that all single byte coded characters will be either
* map to UTF-8 coded characters or illegal characters. Thus no replacement is
* assumed at the moment.
*
* This particular file is to cover conversions from various single byte
* codesets to UTF-8.
*/
#include <stdlib.h>
#include <errno.h>
#include "sb_to_utf8.h"
void *
_icv_open()
{
return((void *)MAGIC_NUMBER);
}
void
_icv_close(int *cd)
{
if (! cd || cd != (int *)MAGIC_NUMBER)
errno = EBADF;
}
size_t
_icv_iconv(int *cd, char **inbuf, size_t *inbufleft, char **outbuf,
size_t *outbufleft)
{
size_t ret_val = 0;
unsigned char *ib;
unsigned char *ob;
unsigned char *ibtail;
unsigned char *obtail;
if (cd != (int *)MAGIC_NUMBER) {
errno = EBADF;
return((size_t)-1);
}
if (!inbuf || !(*inbuf))
return((size_t)0);
ib = (unsigned char *)*inbuf;
ob = (unsigned char *)*outbuf;
ibtail = ib + *inbufleft;
obtail = ob + *outbufleft;
while (ib < ibtail) {
register int i;
unsigned long u8;
signed char sz;
u8 = (unsigned long)sb_u8_tbl[*ib].u8;
sz = sb_u8_tbl[*ib].size;
if (sz == ICV_TYPE_ILLEGAL_CHAR) {
errno = EILSEQ;
ret_val = (size_t)-1;
break;
}
if ((u8 & ICV_UTF8_REPRESENTATION_ffff_mask) ==
ICV_UTF8_REPRESENTATION_fffe ||
(u8 & ICV_UTF8_REPRESENTATION_ffff_mask) ==
ICV_UTF8_REPRESENTATION_ffff ||
u8 > ICV_UTF8_REPRESENTATION_10fffd ||
(u8 >= ICV_UTF8_REPRESENTATION_d800 &&
u8 <= ICV_UTF8_REPRESENTATION_dfff) ||
(u8 >= ICV_UTF8_REPRESENTATION_fdd0 &&
u8 <= ICV_UTF8_REPRESENTATION_fdef)) {
/* This should not happen, if sb_u8_tbl is right. */
errno = EILSEQ;
ret_val = (size_t)-1;
break;
}
if ((obtail - ob) < sz) {
errno = E2BIG;
ret_val = (size_t)-1;
break;
}
for (i = 1; i <= sz; i++)
*ob++ = (unsigned int)((u8 >> ((sz - i) * 8)) & 0xff);
ib++;
}
*inbuf = (char *)ib;
*inbufleft = ibtail - ib;
*outbuf = (char *)ob;
*outbufleft = obtail - ob;
return(ret_val);
}
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