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) 1999 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 "ibm_thai_table.h"
31 #include "common_utf.h"
32 #include "common_euc.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 /**** IBM Cp838 to IBM Cp 874 ****/
41
_838_to_874(hcode_type euc_code)42 hcode_type _838_to_874(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 /* For Thai, this if statement will not be used.*/
50 /* I retain them because it's the part of the */
51 /* framework. To maintain, look down 21 lines. */
52
53 if ((EUC_UDC_SEG1 == euc_code.byte.byte3) ||
54 (EUC_UDC_SEG2 == euc_code.byte.byte3)) {
55 if ((euc_code.byte.byte4 < EUC_UDC_OFFSET_START) ||
56 (EUC_UDC_OFFSET_END < euc_code.byte.byte4)) {
57 /* beyond the UDC area */
58 utf_code.code = 0;
59
60 return(utf_code);
61 }
62
63 udc_index = (euc_code.byte.byte3 == EUC_UDC_SEG1) ?
64 0 : EUC_UDC_SEG_GAP;
65 udc_index += (int)(euc_code.byte.byte4 - EUC_UDC_OFFSET_START);
66
67 utf_code = _udcidx_to_utf(udc_index);
68
69 if (utf_code.code == UTF_UDC_ERROR)
70 utf_code.code = 0; /* Failed */
71
72 return(utf_code);
73 }
74
75 /* For Thai, this function starts here */
76 /* To change table, just change table */
77 /* name 5 lines below. */
78
79 node.code = euc_code.word.low;
80
81 node_ptr = bsearch( &node,
82 ibm838_874_tbl, sizeof(ibm838_874_tbl)/sizeof(hcode_table),
83 sizeof(hcode_table), node_compare);
84
85 if (node_ptr != NULL) /* Success */
86 return(node_ptr->utf8);
87 else { /* Failed */
88 utf_code.code = 0;
89 return(utf_code);
90 }
91
92 } /* end of hcode_type _874_to_838(hcode_type euc_code) */
93