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
26 #include <errno.h>
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include "common_thai.h"
30 #include "common_utf.h"
31 #include "common_euc.h"
32 #include "euc_utf_table.h"
33
node_compare(const void * node1,const void * node2)34 static int node_compare(const void *node1, const void *node2)
35 {
36 return(((int)(((const hcode_table *)node1)->code) -
37 (int)(((const hcode_table *)node2)->code)));
38 }
39
40 /**** _ W A N S U N G _ T O _ U T F 8 ****/
41
_eucTH_to_utf8(hcode_type euc_code)42 hcode_type _eucTH_to_utf8(hcode_type euc_code)
43 {
44 hcode_table *node_ptr, node;
45 hcode_type utf_code;
46 int udc_index;
47
48 /* User Definable Area Check */
49 if ((EUC_UDC_SEG1 == euc_code.byte.byte3) ||
50 (EUC_UDC_SEG2 == euc_code.byte.byte3)) {
51 if ((euc_code.byte.byte4 < EUC_UDC_OFFSET_START) ||
52 (EUC_UDC_OFFSET_END < euc_code.byte.byte4)) {
53 /* beyond the UDC area */
54 utf_code.code = 0;
55
56 return(utf_code);
57 }
58
59 udc_index = (euc_code.byte.byte3 == EUC_UDC_SEG1) ?
60 0 : EUC_UDC_SEG_GAP;
61 udc_index += (int)(euc_code.byte.byte4 - EUC_UDC_OFFSET_START);
62
63 utf_code = _udcidx_to_utf(udc_index);
64
65 if (utf_code.code == UTF_UDC_ERROR)
66 utf_code.code = 0; /* Failed */
67
68 return(utf_code);
69 }
70
71 node.code = euc_code.word.low;
72
73 node_ptr = bsearch( &node,
74 euc2utf_tbl, sizeof(euc2utf_tbl)/sizeof(hcode_table),
75 sizeof(hcode_table), node_compare);
76
77 if (node_ptr != NULL) /* Success */
78 return(node_ptr->utf8);
79 else { /* Failed */
80 utf_code.code = 0;
81 return(utf_code);
82 }
83
84 } /* end of hcode_type _eucTH_to_utf8(hcode_type euc_code) */
85