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 <stdlib.h>
28 #include "common_han.h"
29 #include "common_utf.h"
30 #include "common_njh.h"
31 #include "njh_utf_table.h"
32
node_compare(const void * node1,const void * node2)33 static int node_compare(const void *node1, const void *node2)
34 {
35 return(((int)(((const hcode_table *)node1)->code) -
36 (int)(((const hcode_table *)node2)->code)));
37 }
38
39 /**** _ J O H A P 9 2 _ T O _ U T F 8 ****/
40
_johap92_to_utf8(hcode_type njh_code)41 hcode_type _johap92_to_utf8(hcode_type njh_code)
42 {
43 hcode_table *node_ptr, node;
44 hcode_type utf_code;
45 int udc_index;
46
47 /* User Definable Area Check */
48 if (njh_code.byte.byte3 == NJH_UDC_SEG) {
49 if ((njh_code.byte.byte4 < NJH_UDC_OFFSET1_START) ||
50 (NJH_UDC_OFFSET2_END < njh_code.byte.byte4) ||
51 ((NJH_UDC_OFFSET1_END < njh_code.byte.byte4) &&
52 (njh_code.byte.byte4 < NJH_UDC_OFFSET2_START))) {
53 /* beyond the UDC area */
54 utf_code.code = 0;
55
56 return(utf_code);
57 }
58
59 if (njh_code.byte.byte4 >= NJH_UDC_OFFSET2_START)
60 udc_index = NJH_UDC_OFFSET_GAP +
61 (int)(njh_code.byte.byte4 - NJH_UDC_OFFSET2_START);
62 else
63 udc_index =
64 (int)(njh_code.byte.byte4 - NJH_UDC_OFFSET1_START);
65
66 utf_code = _udcidx_to_utf(udc_index);
67
68 if (utf_code.code == UTF_UDC_ERROR)
69 utf_code.code = UTF8_NON_ID_CHAR; /* Failed */
70
71 return(utf_code);
72
73 } else if (njh_code.code > NJH_HANGUL_END) {
74 /* Hanja or special symbol */
75 /* Notes: if Hangul Jamo needed, add here to table coversion */
76
77 node.code = njh_code.word.low;
78
79 node_ptr = bsearch( &node,
80 njh2utf_tbl, sizeof(njh2utf_tbl)/sizeof(hcode_table),
81 sizeof(hcode_table), node_compare);
82
83 if (node_ptr != NULL) /* Success */
84 return(node_ptr->utf8);
85 else { /* Failed */
86 utf_code.code = UTF8_NON_ID_CHAR;
87 return(utf_code);
88 }
89
90 } else {
91 /* Hangul code */
92 hcode_type unicode;
93 register unsigned int x, y, z;
94
95 x = njh_code.johap.chosung - 2; /* 2 = 'Kyoug' */
96 y = njh_code.johap.joongsung;
97 y = y < 0x08 ? y - 3 :
98 y < 0x10 ? y - 5 :
99 y < 0x18 ? y - 7 : y - 9;
100 z = njh_code.johap.jongsung;
101 z = z < 0x12 ? z - 1 : z - 2;
102 unicode.code = (unsigned int)(x*588 + y*28 + z)
103 + 0xAC00;
104 /* 588 = 21(Joongsung Number) * 28(Jongsung Number) */
105
106 utf_code = _uni_to_utf8(unicode);
107
108 return(utf_code);
109
110 }
111
112 } /* end of hcode_type johap92_to_utf8(hcode_type njh_code) */
113