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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.
*
* In this program, we assume that each table entry provided will contain
* a valid UCS character, an illegal character, or, a replacement character.
* In other words, it is table provider's responsibility to provide
* an appropriate mapping for each single byte character in the table since
* the program in this file will not do any special checking on the table
* component values.
*
* This particular file is to cover conversions from various single byte
* codesets to UCS-2, UCS-2BE, UCS-2LE, UCS-4, UCS-4BE, UCS-4LE, UTF-16,
* UTF-16BE, UTF-16LE, UTF-32, UTF-32BE, and UTF-32LE.
*/
#include <stdlib.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/isa_defs.h>
#include "sb_to_ucs.h"
void *
_icv_open()
{
ucs_state_t *cd = (ucs_state_t *)calloc(1, sizeof(ucs_state_t));
if (cd == (ucs_state_t *)NULL) {
errno = ENOMEM;
return((void *)-1);
}
#if defined(UTF_16BE) || defined(UCS_2BE) || defined(UCS_4BE) || \
defined(UTF_32BE)
cd->little_endian = false;
cd->bom_written = true;
#elif defined(UTF_16LE) || defined(UCS_2LE) || defined(UCS_4LE) || \
defined(UTF_32LE)
cd->little_endian = true;
cd->bom_written = true;
#elif defined(_LITTLE_ENDIAN)
cd->little_endian = true;
#endif
return((void *)cd);
}
void
_icv_close(ucs_state_t *cd)
{
if (! cd)
errno = EBADF;
else
free((void *)cd);
}
size_t
_icv_iconv(ucs_state_t *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;
unsigned int u4;
#if defined(UTF_16) || defined(UTF_16BE) || defined(UTF_16LE)
unsigned int u4_2;
#endif
signed char obsz;
if (! cd) {
errno = EBADF;
return((size_t)-1);
}
if (!inbuf || !(*inbuf)) {
#if defined(UCS_2) || defined(UCS_4) || defined(UTF_16) || defined(UTF_32)
cd->bom_written = false;
#endif
return((size_t)0);
}
ib = (unsigned char *)*inbuf;
ob = (unsigned char *)*outbuf;
ibtail = ib + *inbufleft;
obtail = ob + *outbufleft;
while (ib < ibtail) {
u4 = sb_u4_tbl[*ib].u8;
#if defined(UTF_16) || defined(UTF_16BE) || defined(UTF_16LE)
u4_2 = 0;
#endif
if (sb_u4_tbl[*ib].size == ICV_TYPE_ILLEGAL_CHAR) {
errno = EILSEQ;
ret_val = (size_t)-1;
break;
}
obsz = (cd->bom_written) ? ICV_FETCH_UCS_SIZE :
ICV_FETCH_UCS_SIZE_TWO;
#if defined(UCS_2) || defined(UCS_2BE) || defined(UCS_2LE)
if (u4 > 0x00ffff) {
u4 = ICV_CHAR_UCS2_REPLACEMENT;
ret_val++;
}
#elif defined(UTF_16) || defined(UTF_16BE) || defined(UTF_16LE)
if (u4 > 0x00ffff && u4 < 0x110000) {
u4_2 = ((u4 - 0x010000) % 0x400) + 0x00dc00;
u4 = ((u4 - 0x010000) / 0x400) + 0x00d800;
obsz += 2;
} else if (u4 > 0x10ffff) {
u4 = ICV_CHAR_UCS2_REPLACEMENT;
ret_val++;
}
#elif defined(UTF_32) || defined(UTF_32BE) || defined(UTF_32LE)
if (u4 > 0x10ffff) {
u4 = ICV_CHAR_UCS2_REPLACEMENT;
ret_val++;
}
#elif defined(UCS_4) || defined(UCS_4BE) || defined(UCS_4LE)
/* do nothing */
#else
#error "Fatal: one of the UCS macros need to be defined."
#endif
/*
* The target values in the conversion tables are in UCS-4
* without BOM and so the max target value possible would be
* U+7FFFFFFF.
*/
if (u4 == 0x00fffe || u4 == 0x00ffff || u4 > 0x7fffffff ||
(u4 >= 0x00d800 && u4 <= 0x00dfff)) {
/*
* if conversion table is right, this should not
* happen.
*/
errno = EILSEQ;
ret_val = (size_t)-1;
break;
}
if ((obtail - ob) < obsz) {
errno = E2BIG;
ret_val = (size_t)-1;
break;
}
if (cd->little_endian) {
if (! cd->bom_written) {
*ob++ = (uchar_t)0xff;
*ob++ = (uchar_t)0xfe;
#if defined(UCS_4) || defined(UCS_4BE) || defined(UCS_4LE) || \
defined(UTF_32) || defined(UTF_32BE) || defined(UTF_32LE)
*(ushort_t *)ob = (ushort_t)0;
ob += 2;
#endif
cd->bom_written = true;
}
*ob++ = (uchar_t)(u4 & 0xff);
*ob++ = (uchar_t)((u4 >> 8) & 0xff);
#if defined(UCS_4) || defined(UCS_4BE) || defined(UCS_4LE) || \
defined(UTF_32) || defined(UTF_32BE) || defined(UTF_32LE)
*ob++ = (uchar_t)((u4 >> 16) & 0xff);
*ob++ = (uchar_t)((u4 >> 24) & 0xff);
#elif defined(UTF_16) || defined(UTF_16BE) || defined(UTF_16LE)
if (u4_2) {
*ob++ = (uchar_t)(u4_2 & 0xff);
*ob++ = (uchar_t)((u4_2 >> 8) & 0xff);
}
#endif
} else {
if (! cd->bom_written) {
#if defined(UCS_4) || defined(UCS_4BE) || defined(UCS_4LE) || \
defined(UTF_32) || defined(UTF_32BE) || defined(UTF_32LE)
*(ushort_t *)ob = (ushort_t)0;
ob += 2;
#endif
*ob++ = (uchar_t)0xfe;
*ob++ = (uchar_t)0xff;
cd->bom_written = true;
}
#if defined(UCS_4) || defined(UCS_4BE) || defined(UCS_4LE) || \
defined(UTF_32) || defined(UTF_32BE) || defined(UTF_32LE)
*ob++ = (uchar_t)((u4 >> 24) & 0xff);
*ob++ = (uchar_t)((u4 >> 16) & 0xff);
#endif
*ob++ = (uchar_t)((u4 >> 8) & 0xff);
*ob++ = (uchar_t)(u4 & 0xff);
#if defined(UTF_16) || defined(UTF_16BE) || defined(UTF_16LE)
if (u4_2) {
*ob++ = (uchar_t)((u4_2 >> 8) & 0xff);
*ob++ = (uchar_t)(u4_2 & 0xff);
}
#endif
}
ib++;
}
*inbuf = (char *)ib;
*inbufleft = ibtail - ib;
*outbuf = (char *)ob;
*outbufleft = obtail - ob;
return(ret_val);
}
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