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1 | /* |
1 | /* |
2 | * Copyright (c) 2008 Jakub Jermar |
2 | * Copyright (c) 2008 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup fs |
29 | /** @addtogroup fs |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | 32 | ||
33 | /** |
33 | /** |
34 | * @file fat_dentry.c |
34 | * @file fat_dentry.c |
35 | * @brief Functions that work with FAT directory entries. |
35 | * @brief Functions that work with FAT directory entries. |
36 | */ |
36 | */ |
37 | 37 | ||
- | 38 | #include "fat_dentry.h" |
|
- | 39 | ||
- | 40 | #define FAT_PAD ' ' |
|
- | 41 | ||
- | 42 | #define FAT_DENTRY_UNUSED 0x00 |
|
- | 43 | #define FAT_DENTRY_E5_ESC 0x05 |
|
- | 44 | #define FAT_DENTRY_DOT 0x2e |
|
- | 45 | #define FAT_DENTRY_ERASED 0xe5 |
|
- | 46 | ||
- | 47 | void dentry_name_canonify(fat_dentry_t *d, char *buf) |
|
- | 48 | { |
|
- | 49 | int i; |
|
- | 50 | ||
- | 51 | for (i = 0; i < FAT_NAME_LEN; i++) { |
|
- | 52 | if (d->name[i] == FAT_PAD) |
|
- | 53 | break; |
|
- | 54 | if (d->name[i] == FAT_DENTRY_E5_ESC) |
|
- | 55 | *buf++ = 0xe5; |
|
- | 56 | else |
|
- | 57 | *buf++ = d->name[i]; |
|
- | 58 | } |
|
- | 59 | if (d->ext[0] != FAT_PAD) |
|
- | 60 | *buf++ = '.'; |
|
- | 61 | for (i = 0; i < FAT_EXT_LEN; i++) { |
|
- | 62 | if (d->ext[i] == FAT_PAD) { |
|
- | 63 | *buf = '\0'; |
|
- | 64 | return; |
|
- | 65 | } |
|
- | 66 | if (d->ext[i] == FAT_DENTRY_E5_ESC) |
|
- | 67 | *buf++ = 0xe5; |
|
- | 68 | else |
|
- | 69 | *buf++ = d->ext[i]; |
|
- | 70 | } |
|
- | 71 | *buf = '\0'; |
|
- | 72 | } |
|
- | 73 | ||
- | 74 | fat_dentry_clsf_t fat_classify_dentry(fat_dentry_t *d) |
|
- | 75 | { |
|
- | 76 | if (d->attr & FAT_ATTR_VOLLABEL) { |
|
- | 77 | /* volume label entry */ |
|
- | 78 | return FAT_DENTRY_SKIP; |
|
- | 79 | } |
|
- | 80 | if (d->name[0] == FAT_DENTRY_ERASED) { |
|
- | 81 | /* not-currently-used entry */ |
|
- | 82 | return FAT_DENTRY_SKIP; |
|
- | 83 | } |
|
- | 84 | if (d->name[0] == FAT_DENTRY_UNUSED) { |
|
- | 85 | /* never used entry */ |
|
- | 86 | return FAT_DENTRY_LAST; |
|
- | 87 | } |
|
- | 88 | if (d->name[0] == FAT_DENTRY_DOT) { |
|
- | 89 | /* |
|
- | 90 | * Most likely '.' or '..'. |
|
- | 91 | * It cannot occur in a regular file name. |
|
- | 92 | */ |
|
- | 93 | return FAT_DENTRY_SKIP; |
|
- | 94 | } |
|
- | 95 | return FAT_DENTRY_VALID; |
|
- | 96 | } |
|
38 | 97 | ||
39 | /** |
98 | /** |
40 | * @} |
99 | * @} |
41 | */ |
100 | */ |
42 | 101 |