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[git/git.git] / cache-tree.h
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1#ifndef CACHE_TREE_H
2#define CACHE_TREE_H
3
4#include "cache.h"
5#include "tree.h"
6#include "tree-walk.h"
7
8struct cache_tree;
9struct cache_tree_sub {
10 struct cache_tree *cache_tree;
11 int count; /* internally used by update_one() */
12 int namelen;
13 int used;
14 char name[FLEX_ARRAY];
15};
16
17struct cache_tree {
18 int entry_count; /* negative means "invalid" */
19 struct object_id oid;
20 int subtree_nr;
21 int subtree_alloc;
22 struct cache_tree_sub **down;
23};
24
25struct cache_tree *cache_tree(void);
26void cache_tree_free(struct cache_tree **);
27void cache_tree_invalidate_path(struct index_state *, const char *);
28struct cache_tree_sub *cache_tree_sub(struct cache_tree *, const char *);
29
30void cache_tree_write(struct strbuf *, struct cache_tree *root);
31struct cache_tree *cache_tree_read(const char *buffer, unsigned long size);
32
33int cache_tree_fully_valid(struct cache_tree *);
34int cache_tree_update(struct index_state *, int);
35void cache_tree_verify(struct repository *, struct index_state *);
36
37/* bitmasks to write_cache_as_tree flags */
38#define WRITE_TREE_MISSING_OK 1
39#define WRITE_TREE_IGNORE_CACHE_TREE 2
40#define WRITE_TREE_DRY_RUN 4
41#define WRITE_TREE_SILENT 8
42#define WRITE_TREE_REPAIR 16
43
44/* error return codes */
45#define WRITE_TREE_UNREADABLE_INDEX (-1)
46#define WRITE_TREE_UNMERGED_INDEX (-2)
47#define WRITE_TREE_PREFIX_ERROR (-3)
48
49int write_index_as_tree(struct object_id *oid, struct index_state *index_state, const char *index_path, int flags, const char *prefix);
50void prime_cache_tree(struct repository *, struct index_state *, struct tree *);
51
52int cache_tree_matches_traversal(struct cache_tree *, struct name_entry *ent, struct traverse_info *info);
53
54#ifdef USE_THE_INDEX_COMPATIBILITY_MACROS
55static inline int write_cache_as_tree(struct object_id *oid, int flags, const char *prefix)
56{
57 return write_index_as_tree(oid, &the_index, get_index_file(), flags, prefix);
58}
59
60static inline int update_main_cache_tree(int flags)
61{
62 if (!the_index.cache_tree)
63 the_index.cache_tree = cache_tree();
64 return cache_tree_update(&the_index, flags);
65}
66#endif
67
68#endif