1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright (c) 1996 by Sun Microsystems, Inc. 23 */ 24 25 #include "common_han.h" 26 #include "common_utf.h" 27 28 #define UNICODE_UDC_START 0xF700 29 #define UNICODE_UDC_END 0xF8FF 30 #define UNICODE_UDC_MAX (UNICODE_UDC_END - UNICODE_UDC_START) 31 32 /**** _ U N I _ T O _ U T F 8 ****/ 33 34 hcode_type _uni_to_utf8(hcode_type unicode) 35 { 36 hcode_type utf8; 37 utf8.code = 0; 38 39 /* new code */ 40 if(unicode.code <= 0x007F){ 41 utf8.code = unicode.code; 42 } 43 else if(unicode.code >= 0x0080 && unicode.code <= 0x07FF){ 44 utf8.utf8.high8bits = 0x00; 45 utf8.utf8.sign1 = 0x00; 46 utf8.utf8.data1 = 0x00; 47 utf8.utf8.sign2 = 0x03; 48 utf8.utf8.data2 = unicode.unicode.data2; 49 utf8.utf8.sign3 = 0x02; 50 utf8.utf8.data3 = unicode.unicode.data3; 51 } 52 else if(unicode.code >= 0x0800 && unicode.code < 0xFFFF){ 53 utf8.utf8.high8bits = 0x00; 54 utf8.utf8.sign1 = 0x0E; 55 utf8.utf8.data1 = unicode.unicode.data1; 56 utf8.utf8.sign2 = 0x02; /* 10xxxxxx */ 57 utf8.utf8.data2 = unicode.unicode.data2; 58 utf8.utf8.sign3 = 0x02; /* 10xxxxxx */ 59 utf8.utf8.data3 = unicode.unicode.data3; 60 } 61 62 return(utf8); 63 64 } /* end of hcode_type _uni_to_utf8(hcode_type uni_code) */ 65 66 /**** _ U T F 8 _ T O _ U N I ****/ 67 68 hcode_type _utf8_to_uni(hcode_type utf8) 69 { 70 hcode_type unicode; 71 unicode.code = 0; 72 73 if(utf8.byte.byte3 == 0 && utf8.byte.byte2 ==0) 74 {/* ASCII */ 75 unicode.byte.byte1 = 0; 76 unicode.byte.byte2 = 0; 77 unicode.byte.byte3 = 0; 78 unicode.byte.byte4 = utf8.byte.byte4; 79 return(unicode); 80 } 81 82 if(utf8.byte.byte2 == 0){ 83 /* 2-byte UTF-8 */ 84 unicode.byte.byte1 = 0; 85 unicode.byte.byte2 = 0; 86 unicode.byte.byte3 = (utf8.byte.byte3 & 0x3F) >> 2; 87 unicode.byte.byte4 = (utf8.byte.byte3 << 6) | (0x3F & utf8.byte.byte4); 88 } 89 else { 90 /* 3-byte UTF-8 */ 91 unicode.unicode.data1 = utf8.utf8.data1; 92 unicode.unicode.data2 = utf8.utf8.data2; 93 unicode.unicode.data3 = utf8.utf8.data3; 94 } 95 return (unicode); 96 97 } /* end of hcode_type _utf8_to_uni(hcode_type utf8) */ 98 99 /* Return UTF-8 code from given User Defined Character Index(Serial Number) */ 100 hcode_type _udcidx_to_utf(int udcidx) 101 { 102 hcode_type unicode, utf8; 103 104 if (udcidx < 0 || UNICODE_UDC_MAX < udcidx) 105 utf8.code = UTF_UDC_ERROR; /* over the UDC bound */ 106 else { 107 unicode.code = UNICODE_UDC_START + udcidx; 108 utf8 = _uni_to_utf8(unicode); 109 } 110 111 return(utf8); 112 } 113 114 /* Return User Defined Character Index(Serial Number) from given UTF-8 code */ 115 int _utf_to_udcidx(hcode_type utf_code) 116 { 117 hcode_type unicode; 118 119 unicode = _utf8_to_uni(utf_code); 120 121 if (unicode.code < UNICODE_UDC_START || UNICODE_UDC_END < unicode.code) 122 return(IDX_UDC_ERROR); 123 else 124 return((int)(unicode.code - UNICODE_UDC_START)); 125 } 126