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1da177e4 LT |
1 | /* |
2 | * fs/cifs/cifs_unicode.c | |
3 | * | |
4 | * Copyright (c) International Business Machines Corp., 2000,2002 | |
5 | * Modified by Steve French (sfrench@us.ibm.com) | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
15 | * the GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
21 | #include <linux/fs.h> | |
22 | #include "cifs_unicode.h" | |
23 | #include "cifs_uniupr.h" | |
24 | #include "cifspdu.h" | |
25 | #include "cifs_debug.h" | |
26 | ||
27 | /* | |
28 | * NAME: cifs_strfromUCS() | |
29 | * | |
30 | * FUNCTION: Convert little-endian unicode string to character string | |
31 | * | |
32 | */ | |
33 | int | |
34 | cifs_strfromUCS_le(char *to, const wchar_t * from, /* LITTLE ENDIAN */ | |
35 | int len, const struct nls_table *codepage) | |
36 | { | |
37 | int i; | |
38 | int outlen = 0; | |
39 | ||
40 | for (i = 0; (i < len) && from[i]; i++) { | |
41 | int charlen; | |
42 | /* 2.4.0 kernel or greater */ | |
43 | charlen = | |
44 | codepage->uni2char(le16_to_cpu(from[i]), &to[outlen], | |
45 | NLS_MAX_CHARSET_SIZE); | |
46 | if (charlen > 0) { | |
47 | outlen += charlen; | |
48 | } else { | |
49 | to[outlen++] = '?'; | |
50 | } | |
51 | } | |
52 | to[outlen] = 0; | |
53 | return outlen; | |
54 | } | |
55 | ||
56 | /* | |
57 | * NAME: cifs_strtoUCS() | |
58 | * | |
59 | * FUNCTION: Convert character string to unicode string | |
60 | * | |
61 | */ | |
62 | int | |
63 | cifs_strtoUCS(wchar_t * to, const char *from, int len, | |
64 | const struct nls_table *codepage) | |
65 | { | |
66 | int charlen; | |
67 | int i; | |
68 | ||
69 | for (i = 0; len && *from; i++, from += charlen, len -= charlen) { | |
70 | ||
71 | /* works for 2.4.0 kernel or later */ | |
72 | charlen = codepage->char2uni(from, len, &to[i]); | |
73 | if (charlen < 1) { | |
74 | cERROR(1, | |
75 | ("cifs_strtoUCS: char2uni returned %d", | |
76 | charlen)); | |
77 | to[i] = cpu_to_le16(0x003f); /* a question mark */ | |
78 | charlen = 1; | |
6c91d362 SF |
79 | } else |
80 | to[i] = cpu_to_le16(to[i]); | |
1da177e4 LT |
81 | |
82 | } | |
83 | ||
84 | to[i] = 0; | |
85 | return i; | |
86 | } | |
87 |