archive documentation: attributes are taken from the tree by default
[git] / tree-walk.h
1 #ifndef TREE_WALK_H
2 #define TREE_WALK_H
3
4 struct name_entry {
5         const unsigned char *sha1;
6         const char *path;
7         unsigned int mode;
8 };
9
10 struct tree_desc {
11         const void *buffer;
12         struct name_entry entry;
13         unsigned int size;
14 };
15
16 static inline const unsigned char *tree_entry_extract(struct tree_desc *desc, const char **pathp, unsigned int *modep)
17 {
18         *pathp = desc->entry.path;
19         *modep = canon_mode(desc->entry.mode);
20         return desc->entry.sha1;
21 }
22
23 static inline int tree_entry_len(const char *name, const unsigned char *sha1)
24 {
25         return (const char *)sha1 - name - 1;
26 }
27
28 void update_tree_entry(struct tree_desc *);
29 void init_tree_desc(struct tree_desc *desc, const void *buf, unsigned long size);
30
31 /* Helper function that does both of the above and returns true for success */
32 int tree_entry(struct tree_desc *, struct name_entry *);
33
34 void *fill_tree_descriptor(struct tree_desc *desc, const unsigned char *sha1);
35
36 struct traverse_info;
37 typedef int (*traverse_callback_t)(int n, unsigned long mask, unsigned long dirmask, struct name_entry *entry, struct traverse_info *);
38 int traverse_trees(int n, struct tree_desc *t, struct traverse_info *info);
39
40 struct traverse_info {
41         struct traverse_info *prev;
42         struct name_entry name;
43         int pathlen;
44
45         unsigned long conflicts;
46         traverse_callback_t fn;
47         void *data;
48 };
49
50 int get_tree_entry(const unsigned char *, const char *, unsigned char *, unsigned *);
51 extern char *make_traverse_path(char *path, const struct traverse_info *info, const struct name_entry *n);
52 extern void setup_traverse_info(struct traverse_info *info, const char *base);
53
54 static inline int traverse_path_len(const struct traverse_info *info, const struct name_entry *n)
55 {
56         return info->pathlen + tree_entry_len(n->path, n->sha1);
57 }
58
59 #endif