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 <stdlib.h>
27 #include <errno.h>
28 #include "ktable.h"
29 #include "johap92_utf.h"
30
31
32 /**** _ I C V _ O P E N ****/
33
_icv_open()34 void* _icv_open()
35 {
36 int* cd = (int*)malloc(sizeof(int));
37
38 if (cd == (int*)NULL)
39 {
40 errno = ENOMEM;
41 return((void*)-1);
42 }
43
44 *cd = MAGIC_NUMBER;
45
46 return((void*)cd);
47 } /* end of void* _icv_open(). */
48
49
50 /**** _ I C V _ C L O S E ****/
51
_icv_close(int * cd)52 void _icv_close(int* cd)
53 {
54 if (!cd)
55 errno = EBADF;
56 else
57 free((void*)cd);
58 } /* end of void _icv_close(int*). */
59
60
61 /**** _ I C V _ I C O N V ****/
62
_icv_iconv(int * cd,char ** inbuf,size_t * inbufleft,char ** outbuf,size_t * outbufleft)63 size_t _icv_iconv(int* cd, char** inbuf, size_t* inbufleft,
64 char** outbuf, size_t* outbufleft)
65 {
66 size_t ret_val = 0;
67 unsigned char* ib;
68 unsigned char* ob;
69 unsigned char* ibtail;
70 unsigned char* obtail;
71
72 if (!cd || (*cd) != MAGIC_NUMBER)
73 {
74 errno = EBADF;
75 return((size_t)-1);
76 }
77
78 if (!inbuf || !(*inbuf))
79 return((size_t)0);
80
81 ib = (unsigned char*)*inbuf;
82 ob = (unsigned char*)*outbuf;
83 ibtail = ib + *inbufleft;
84 obtail = ob + *outbufleft;
85
86 while (ib < ibtail)
87 {
88 if (*ib & 0x80)
89 {
90 unsigned short wcode;
91 unsigned long ci, v, cf;
92 char result;
93 extern char _johap92_to_utf8(unsigned long*,
94 unsigned long*,
95 unsigned long*,
96 unsigned short);
97
98 if ((ibtail - ib) < 2)
99 {
100 errno = EINVAL;
101 ret_val = (size_t)-1;
102 break;
103 }
104
105 if ((result = _johap92_to_utf8(&ci, &v, &cf,
106 ((unsigned short)*ib << 8) |
107 ((unsigned short)*(ib + 1) & 0xFF)))
108 == HANGUL)
109 {
110 if ((obtail - ob) < (cf ? 9 : 6))
111 {
112 errno = E2BIG;
113 ret_val = (size_t)-1;
114 break;
115 }
116 *ob++ = (char)((ci >> 16) & 0xFF);
117 *ob++ = (char)((ci >> 8) & 0xFF);
118 *ob++ = (char)(ci & 0xFF);
119 *ob++ = (char)((v >> 16) & 0xFF);
120 *ob++ = (char)((v >> 8) & 0xFF);
121 *ob++ = (char)(v & 0xFF);
122 if (cf)
123 {
124 *ob++ = (char)((cf >> 16) & 0xFF);
125 *ob++ = (char)((cf >> 8) & 0xFF);
126 *ob++ = (char)(cf & 0xFF);
127 }
128 }
129 else if (result == HANJA_OR_SYMBOL)
130 {
131 if ((obtail - ob) < 3)
132 {
133 errno = E2BIG;
134 ret_val = (size_t)-1;
135 break;
136 }
137 *ob++ = (char)((ci >> 16) & 0xFF);
138 *ob++ = (char)((ci >> 8) & 0xFF);
139 *ob++ = (char)(ci & 0xFF);
140 }
141 else /* FAILED - this means input char isn't belong to
142 * input codeset. */
143 {
144 errno = EILSEQ;
145 ret_val = (size_t)-1;
146 break;
147 }
148 ib += 2;
149
150 }
151 else /* CS0 */
152 {
153 if (ob >= obtail)
154 {
155 errno = E2BIG;
156 ret_val = (size_t)-1;
157 break;
158 }
159 *ob++ = *ib++;
160 }
161 }
162
163 *inbuf = (char*)ib;
164 *inbufleft = ibtail - ib;
165 *outbuf = (char*)ob;
166 *outbufleft = obtail - ob;
167
168 return(ret_val);
169 } /* end of size_t _icv_iconv(int*, char**, size_t*, char**, size_t*). */
170