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 <widec.h>
28 #include "common_def.h"
29 #include "ibm_thai_api.h"
30 #include "common_thai.h"
31
32 /**** _ I C V _ O P E N ****/
33
_icv_open()34 void* _icv_open()
35 {
36 return((void*)MAGIC_NUMBER);
37 } /* end of int _icv_open(). */
38
39
40 /**** _ I C V _ C L O S E ****/
41
_icv_close(int * cd)42 void _icv_close(int* cd)
43 {
44 if (!cd || cd != (int*)MAGIC_NUMBER)
45 errno = EBADF;
46 } /* end of void _icv_close(int*). */
47
48
49 /**** _ I C V _ I C O N V ****/
50
_icv_iconv(int * cd,char ** inbuf,size_t * inbufleft,char ** outbuf,size_t * outbufleft)51 size_t _icv_iconv(int* cd, char** inbuf, size_t* inbufleft,
52 char** outbuf, size_t* outbufleft)
53 {
54 size_t ret_val = 0;
55 unsigned char* ib;
56 unsigned char* ob;
57 unsigned char* ibtail;
58 unsigned char* obtail;
59
60 if (!cd || cd != (int*)MAGIC_NUMBER)
61 {
62 errno = EBADF;
63 return((size_t)-1);
64 }
65
66 if (!inbuf || !(*inbuf))
67 return((size_t)0);
68
69 ib = (unsigned char*)*inbuf;
70 ob = (unsigned char*)*outbuf;
71 ibtail = ib + *inbufleft;
72 obtail = ob + *outbufleft;
73
74 while (ib < ibtail)
75 {
76 hcode_type euc_code, utf_code;
77
78 if ((ibtail - ib) < 1)
79 {
80 errno = EINVAL;
81 ret_val = (size_t)-1;
82 break;
83 }
84
85 /* euc_code.byte.byte4 is the variable */
86 /* that would be sent to a function to */
87 /* find the coversion and get the retu-*/
88 /* -rned value to put back. */
89 euc_code.code = 0;
90 euc_code.byte.byte4 = *ib;
91
92 utf_code = _874_to_838(euc_code);
93
94 if (utf_code.code != 0)
95 {
96 if ((obtail - ob) < 1)
97 {
98 errno = E2BIG;
99 ret_val = (size_t)-1;
100 break;
101 }
102 *ob++ = (char)utf_code.byte.byte4;
103 }
104 else /* FAILED - this means input char isn't belong to
105 * input codeset. */
106 {
107 errno = EILSEQ;
108 ret_val = (size_t)-1;
109 break;
110 }
111 ib += 1;
112 }
113
114 *inbuf = (char*)ib;
115 *inbufleft = ibtail - ib;
116 *outbuf = (char*)ob;
117 *outbufleft = obtail - ob;
118
119 return(ret_val);
120 } /* end of size_t _icv_iconv(int*, char**, size_t*, char**, size_t*). */
121