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 /* 23 * Copyright (c) 1996 by Sun Microsystems, Inc. 24 */ 25 26 27 #include "common_thai.h" 28 #include "common_utf.h" 29 30 #define UNICODE_UDC_START 0xF700 31 #define UNICODE_UDC_END 0xF8FF 32 #define UNICODE_UDC_MAX (UNICODE_UDC_END - UNICODE_UDC_START) 33 34 /**** _ U N I _ T O _ U T F 8 ****/ 35 _uni_to_utf8(hcode_type unicode)36hcode_type _uni_to_utf8(hcode_type unicode) 37 { 38 hcode_type utf8; 39 40 utf8.utf8.high8bits = 0; 41 utf8.utf8.sign1 = 0x0E; /* 1110xxxx */ 42 utf8.utf8.data1 = unicode.unicode.data1; 43 utf8.utf8.sign2 = 0x02; /* 10xxxxxx */ 44 utf8.utf8.data2 = unicode.unicode.data2; 45 utf8.utf8.sign3 = 0x02; /* 10xxxxxx */ 46 utf8.utf8.data3 = unicode.unicode.data3; 47 48 return(utf8); 49 50 } /* end of hcode_type _uni_to_utf8(hcode_type uni_code) */ 51 52 /**** _ U T F 8 _ T O _ U N I ****/ 53 _utf8_to_uni(hcode_type utf8)54hcode_type _utf8_to_uni(hcode_type utf8) 55 { 56 hcode_type unicode; 57 58 unicode.code = 0; 59 unicode.unicode.data1 = utf8.utf8.data1; 60 unicode.unicode.data2 = utf8.utf8.data2; 61 unicode.unicode.data3 = utf8.utf8.data3; 62 63 return(unicode); 64 65 } /* end of hcode_type _utf8_to_uni(hcode_type utf8) */ 66 67 /* Return UTF-8 code from given User Defined Character Index(Serial Number) */ _udcidx_to_utf(int udcidx)68hcode_type _udcidx_to_utf(int udcidx) 69 { 70 hcode_type unicode, utf8; 71 72 if (udcidx < 0 || UNICODE_UDC_MAX < udcidx) 73 utf8.code = UTF_UDC_ERROR; /* over the UDC bound */ 74 else { 75 unicode.code = UNICODE_UDC_START + udcidx; 76 utf8 = _uni_to_utf8(unicode); 77 } 78 79 return(utf8); 80 } 81 82 /* Return User Defined Character Index(Serial Number) from given UTF-8 code */ _utf_to_udcidx(hcode_type utf_code)83int _utf_to_udcidx(hcode_type utf_code) 84 { 85 hcode_type unicode; 86 87 unicode = _utf8_to_uni(utf_code); 88 89 if (unicode.code < UNICODE_UDC_START || UNICODE_UDC_END < unicode.code) 90 return(IDX_UDC_ERROR); 91 else 92 return((int)(unicode.code - UNICODE_UDC_START)); 93 } 94