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) 1994 by Sun Microsystems, Inc.
23 */
24
25
26 #include <errno.h>
27 #include "ktable.h"
28 #include "hangulcode.h"
29
30
31 extern kcode_table johap922utf8_tbl[];
32
33
34 /**** _ J O H A P 9 2 _ T O _ U T F 8 ****/
35
_johap92_to_utf8(unsigned long * chosung,unsigned long * joongsung,unsigned long * jongsung,unsigned short wcode)36 char _johap92_to_utf8(unsigned long* chosung, unsigned long* joongsung,
37 unsigned long* jongsung, unsigned short wcode)
38 {
39 register short h, i, j, l;
40 short ci, v, cf;
41 unsigned char byte1, byte2;
42
43 if (wcode > 0xD3FE)
44 { /* Hanja or special symbol */
45 for (l = 0, h = MAX_J922U_NUM; l < h; )
46 {
47 i = (l + h) / 2;
48 if (johap922utf8_tbl[i].code == wcode)
49 break;
50 else if (johap922utf8_tbl[l].code == wcode)
51 {
52 i = l;
53 break;
54 }
55 else if (johap922utf8_tbl[h].code == wcode)
56 {
57 i = h;
58 break;
59 }
60 else if (johap922utf8_tbl[i].code < wcode)
61 l = i + 1;
62 else
63 h = i - 1;
64 }
65
66 if (johap922utf8_tbl[i].code != wcode)
67 return(ILLEGAL_SEQ);
68
69 *chosung = johap922utf8_tbl[i].utf8;
70 return(HANJA_OR_SYMBOL);
71 }
72
73 /* Hangul processing. */
74 byte1 = (char)((wcode >> 8) & 0xFF);
75 byte2 = (char)(wcode & 0xFF);
76 if (byte1 < 0x84 || byte1 > 0xD3 || byte2 < 0x41 || byte2 > 0xFE ||
77 (byte2 > 0x7E && byte2 < 0x81))
78 return(ILLEGAL_SEQ);
79
80 ci = CHOSUNG(wcode) - 2;
81 v = JOONGSUNG(wcode) -
82 ((unsigned short)((unsigned short)JOONGSUNG(wcode) - 2) /
83 ((unsigned short)8) * 2 + 3);
84 cf = JONGSUNG(wcode) - (unsigned short)JONGSUNG(wcode) / 18;
85 *chosung = (ci < 0) ? 0xE1859F : 0xE18480 + ci;
86 *joongsung = (v < 0) ? 0xE185A0 : 0xE185A1 + v;
87 *jongsung = (cf < 2) ? 0 : ((cf > 25) ? 0xE18766 + cf : 0xE186A6 + cf);
88 return(HANGUL);
89 } /* end of char _johap92_to_utf8(unsigned long*, unsigned long*,
90 unsigned long*, unsigned short). */
91