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, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 1993 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /*
28 * mbstowcs
29 */
30
31 #pragma ident "%Z%%M% %I% %E% SMI"
32
33 #if !defined(lint) && defined(SCCSIDS)
34 static char *sccsid = "%Z%%M% %I% %E% SMI";
35 #endif
36
37 #include <sys/types.h>
38 #include "codeset.h"
39 #include "mbextern.h"
40
41 int
mbstowcs(pwcs,s,n)42 mbstowcs(pwcs, s, n)
43 wchar_t * pwcs;
44 char *s;
45 size_t n;
46 {
47 char *handle; /* handle */
48 int (*p)();
49 int num = 0;
50 int ret;
51
52 switch (_code_set_info.code_id) {
53 case CODESET_NONE:
54 /*
55 * default code set,
56 */
57 while (*s && num < n) {
58 *pwcs++ = (wchar_t)*s++;
59 num++;
60 }
61 if (num < n)
62 *pwcs = 0;
63 return (num);
64 break;
65 case CODESET_EUC:
66 /*
67 * EUC code set
68 */
69 return(_mbstowcs_euc(pwcs, s, n));
70 break;
71
72 case CODESET_XCCS:
73 /*
74 * XCCS code set
75 */
76 return(_mbstowcs_xccs(pwcs, s, n));
77 break;
78
79 case CODESET_ISO2022:
80 /*
81 * ISO family
82 */
83 return(_mbstowcs_iso(pwcs, s, n));
84 break;
85
86 default:
87 /*
88 * User defined code set
89 */
90 handle = _ml_open_library();
91 if (handle == (void *)NULL)
92 return(ERROR_NO_LIB); /* No user library */
93 p = (int (*)()) dlsym(handle, "_mbstowcs");
94 if (p == (int (*)()) NULL)
95 return(ERROR_NO_SYM);
96 ret = (*p)(pwcs, s, n);
97 return (ret);
98 break;
99 }
100 /* NOTREACHED */
101 }
102