blob: 0b05a8f7e376bc897399d701f9634f650e4d87c8 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
/*
* Copyright 2020 Google LLC
*
* Use of this source code is governed by a BSD-style
* license that can be found in the LICENSE file or at
* https://developers.google.com/open-source/licenses/bsd
*/
#ifndef REFTABLE_BLOCK_H
#define REFTABLE_BLOCK_H
#include <stdint.h>
#include "reftable-basics.h"
#include "reftable-blocksource.h"
#include "reftable-iterator.h"
struct z_stream_s;
/*
* A block part of a reftable. Contains records as well as some metadata
* describing them.
*/
struct reftable_block {
/*
* Offset of the block header; nonzero for the first block in a
* reftable.
*/
uint32_t header_off;
/* The memory block. */
struct reftable_block_data block_data;
uint32_t hash_size;
/* Uncompressed data for log entries. */
struct z_stream_s *zstream;
unsigned char *uncompressed_data;
size_t uncompressed_cap;
/*
* Restart point data. Restart points are located after the block's
* record data.
*/
uint16_t restart_count;
uint32_t restart_off;
/*
* Size of the data in the file. For log blocks, this is the compressed
* size.
*/
uint32_t full_block_size;
uint8_t block_type;
};
/* Initialize a reftable block from the given block source. */
int reftable_block_init(struct reftable_block *b,
struct reftable_block_source *source,
uint32_t offset, uint32_t header_size,
uint32_t table_block_size, uint32_t hash_size,
uint8_t want_type);
/* Release resources allocated by the block. */
void reftable_block_release(struct reftable_block *b);
/* Initialize a generic record iterator from the given block. */
int reftable_block_init_iterator(const struct reftable_block *b,
struct reftable_iterator *it);
/* Returns the block type (eg. 'r' for refs). */
uint8_t reftable_block_type(const struct reftable_block *b);
/* Decodes the first key in the block. */
int reftable_block_first_key(const struct reftable_block *b, struct reftable_buf *key);
#endif /* REFTABLE_BLOCK_H */
|
