url: do not allow %00 to represent NUL in URLs
[git] / tree-walk.h
1 #ifndef TREE_WALK_H
2 #define TREE_WALK_H
3
4 #include "cache.h"
5
6 struct name_entry {
7         struct object_id oid;
8         const char *path;
9         int pathlen;
10         unsigned int mode;
11 };
12
13 struct tree_desc {
14         const void *buffer;
15         struct name_entry entry;
16         unsigned int size;
17 };
18
19 static inline const struct object_id *tree_entry_extract(struct tree_desc *desc, const char **pathp, unsigned int *modep)
20 {
21         *pathp = desc->entry.path;
22         *modep = desc->entry.mode;
23         return &desc->entry.oid;
24 }
25
26 static inline int tree_entry_len(const struct name_entry *ne)
27 {
28         return ne->pathlen;
29 }
30
31 /*
32  * The _gently versions of these functions warn and return false on a
33  * corrupt tree entry rather than dying,
34  */
35
36 void update_tree_entry(struct tree_desc *);
37 int update_tree_entry_gently(struct tree_desc *);
38 void init_tree_desc(struct tree_desc *desc, const void *buf, unsigned long size);
39 int init_tree_desc_gently(struct tree_desc *desc, const void *buf, unsigned long size);
40
41 /*
42  * Helper function that does both tree_entry_extract() and update_tree_entry()
43  * and returns true for success
44  */
45 int tree_entry(struct tree_desc *, struct name_entry *);
46 int tree_entry_gently(struct tree_desc *, struct name_entry *);
47
48 void *fill_tree_descriptor(struct tree_desc *desc, const struct object_id *oid);
49
50 struct traverse_info;
51 typedef int (*traverse_callback_t)(int n, unsigned long mask, unsigned long dirmask, struct name_entry *entry, struct traverse_info *);
52 int traverse_trees(struct index_state *istate, int n, struct tree_desc *t, struct traverse_info *info);
53
54 enum get_oid_result get_tree_entry_follow_symlinks(struct object_id *tree_oid, const char *name, struct object_id *result, struct strbuf *result_path, unsigned *mode);
55
56 struct traverse_info {
57         const char *traverse_path;
58         struct traverse_info *prev;
59         struct name_entry name;
60         int pathlen;
61         struct pathspec *pathspec;
62
63         unsigned long df_conflicts;
64         traverse_callback_t fn;
65         void *data;
66         int show_all_errors;
67 };
68
69 int get_tree_entry(const struct object_id *, const char *, struct object_id *, unsigned *);
70 extern char *make_traverse_path(char *path, const struct traverse_info *info, const struct name_entry *n);
71 extern void setup_traverse_info(struct traverse_info *info, const char *base);
72
73 static inline int traverse_path_len(const struct traverse_info *info, const struct name_entry *n)
74 {
75         return info->pathlen + tree_entry_len(n);
76 }
77
78 /* in general, positive means "kind of interesting" */
79 enum interesting {
80         all_entries_not_interesting = -1, /* no, and no subsequent entries will be either */
81         entry_not_interesting = 0,
82         entry_interesting = 1,
83         all_entries_interesting = 2 /* yes, and all subsequent entries will be */
84 };
85
86 enum interesting tree_entry_interesting(struct index_state *istate,
87                                         const struct name_entry *,
88                                         struct strbuf *, int,
89                                         const struct pathspec *ps);
90
91 #endif