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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 (c) 1996 by Sun Microsystems, Inc.
*/
#include "common_han.h"
#include "common_utf.h"
#define UNICODE_UDC_START 0xF700
#define UNICODE_UDC_END 0xF8FF
#define UNICODE_UDC_MAX (UNICODE_UDC_END - UNICODE_UDC_START)
/**** _ U N I _ T O _ U T F 8 ****/
hcode_type _uni_to_utf8(hcode_type unicode)
{
hcode_type utf8;
utf8.code = 0;
/* new code */
if(unicode.code <= 0x007F){
utf8.code = unicode.code;
}
else if(unicode.code >= 0x0080 && unicode.code <= 0x07FF){
utf8.utf8.high8bits = 0x00;
utf8.utf8.sign1 = 0x00;
utf8.utf8.data1 = 0x00;
utf8.utf8.sign2 = 0x03;
utf8.utf8.data2 = unicode.unicode.data2;
utf8.utf8.sign3 = 0x02;
utf8.utf8.data3 = unicode.unicode.data3;
}
else if(unicode.code >= 0x0800 && unicode.code < 0xFFFF){
utf8.utf8.high8bits = 0x00;
utf8.utf8.sign1 = 0x0E;
utf8.utf8.data1 = unicode.unicode.data1;
utf8.utf8.sign2 = 0x02; /* 10xxxxxx */
utf8.utf8.data2 = unicode.unicode.data2;
utf8.utf8.sign3 = 0x02; /* 10xxxxxx */
utf8.utf8.data3 = unicode.unicode.data3;
}
return(utf8);
} /* end of hcode_type _uni_to_utf8(hcode_type uni_code) */
/**** _ U T F 8 _ T O _ U N I ****/
hcode_type _utf8_to_uni(hcode_type utf8)
{
hcode_type unicode;
unicode.code = 0;
if(utf8.byte.byte3 == 0 && utf8.byte.byte2 ==0)
{/* ASCII */
unicode.byte.byte1 = 0;
unicode.byte.byte2 = 0;
unicode.byte.byte3 = 0;
unicode.byte.byte4 = utf8.byte.byte4;
return(unicode);
}
if(utf8.byte.byte2 == 0){
/* 2-byte UTF-8 */
unicode.byte.byte1 = 0;
unicode.byte.byte2 = 0;
unicode.byte.byte3 = (utf8.byte.byte3 & 0x3F) >> 2;
unicode.byte.byte4 = (utf8.byte.byte3 << 6) | (0x3F & utf8.byte.byte4);
}
else {
/* 3-byte UTF-8 */
unicode.unicode.data1 = utf8.utf8.data1;
unicode.unicode.data2 = utf8.utf8.data2;
unicode.unicode.data3 = utf8.utf8.data3;
}
return (unicode);
} /* end of hcode_type _utf8_to_uni(hcode_type utf8) */
/* Return UTF-8 code from given User Defined Character Index(Serial Number) */
hcode_type _udcidx_to_utf(int udcidx)
{
hcode_type unicode, utf8;
if (udcidx < 0 || UNICODE_UDC_MAX < udcidx)
utf8.code = UTF_UDC_ERROR; /* over the UDC bound */
else {
unicode.code = UNICODE_UDC_START + udcidx;
utf8 = _uni_to_utf8(unicode);
}
return(utf8);
}
/* Return User Defined Character Index(Serial Number) from given UTF-8 code */
int _utf_to_udcidx(hcode_type utf_code)
{
hcode_type unicode;
unicode = _utf8_to_uni(utf_code);
if (unicode.code < UNICODE_UDC_START || UNICODE_UDC_END < unicode.code)
return(IDX_UDC_ERROR);
else
return((int)(unicode.code - UNICODE_UDC_START));
}
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