/src/glib/gio/gvdb/gvdb-format.h
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1 | | /* |
2 | | * Copyright © 2010 Codethink Limited |
3 | | * |
4 | | * This library is free software; you can redistribute it and/or |
5 | | * modify it under the terms of the GNU Lesser General Public |
6 | | * License as published by the Free Software Foundation; either |
7 | | * version 2.1 of the License, or (at your option) any later version. |
8 | | * |
9 | | * This library is distributed in the hope that it will be useful, |
10 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | | * Lesser General Public License for more details. |
13 | | * |
14 | | * You should have received a copy of the GNU Lesser General Public |
15 | | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
16 | | * |
17 | | * Author: Ryan Lortie <desrt@desrt.ca> |
18 | | */ |
19 | | |
20 | | #ifndef __gvdb_format_h__ |
21 | | #define __gvdb_format_h__ |
22 | | |
23 | | #include <glib.h> |
24 | | |
25 | | typedef struct { guint16 value; } guint16_le; |
26 | | typedef struct { guint32 value; } guint32_le; |
27 | | |
28 | | struct gvdb_pointer { |
29 | | guint32_le start; |
30 | | guint32_le end; |
31 | | }; |
32 | | |
33 | | struct gvdb_hash_header { |
34 | | guint32_le n_bloom_words; |
35 | | guint32_le n_buckets; |
36 | | }; |
37 | | |
38 | | struct gvdb_hash_item { |
39 | | guint32_le hash_value; |
40 | | guint32_le parent; |
41 | | |
42 | | guint32_le key_start; |
43 | | guint16_le key_size; |
44 | | gchar type; |
45 | | gchar unused; |
46 | | |
47 | | union |
48 | | { |
49 | | struct gvdb_pointer pointer; |
50 | | gchar direct[8]; |
51 | | } value; |
52 | | }; |
53 | | |
54 | | struct gvdb_header { |
55 | | guint32 signature[2]; |
56 | | guint32_le version; |
57 | | guint32_le options; |
58 | | |
59 | | struct gvdb_pointer root; |
60 | | }; |
61 | | |
62 | 0 | static inline guint32_le guint32_to_le (guint32 value) { |
63 | 0 | guint32_le result = { GUINT32_TO_LE (value) }; |
64 | 0 | return result; |
65 | 0 | } |
66 | | |
67 | 0 | static inline guint32 guint32_from_le (guint32_le value) { |
68 | 0 | return GUINT32_FROM_LE (value.value); |
69 | 0 | } |
70 | | |
71 | 0 | static inline guint16_le guint16_to_le (guint16 value) { |
72 | 0 | guint16_le result = { GUINT16_TO_LE (value) }; |
73 | 0 | return result; |
74 | 0 | } |
75 | | |
76 | 0 | static inline guint16 guint16_from_le (guint16_le value) { |
77 | 0 | return GUINT16_FROM_LE (value.value); |
78 | 0 | } |
79 | | |
80 | 0 | #define GVDB_SIGNATURE0 1918981703 |
81 | 0 | #define GVDB_SIGNATURE1 1953390953 |
82 | 0 | #define GVDB_SWAPPED_SIGNATURE0 GUINT32_SWAP_LE_BE (GVDB_SIGNATURE0) |
83 | 0 | #define GVDB_SWAPPED_SIGNATURE1 GUINT32_SWAP_LE_BE (GVDB_SIGNATURE1) |
84 | | |
85 | | #endif /* __gvdb_format_h__ */ |