cache-tree.h

   1 #ifndef CACHE_TREE_H
   2 #define CACHE_TREE_H
   3
   4 #include "tree.h"
   5 #include "tree-walk.h"
   6
   7 struct cache_tree;
   8 struct cache_tree_sub {
   9         struct cache_tree *cache_tree;
  10         int count;              /* internally used by update_one() */
  11         int namelen;
  12         int used;
  13         char name[FLEX_ARRAY];
  14 };
  15
  16 struct cache_tree {
  17         int entry_count; /* negative means "invalid" */
  18         unsigned char sha1[20];
  19         int subtree_nr;
  20         int subtree_alloc;
  21         struct cache_tree_sub **down;
  22 };
  23
  24 struct cache_tree *cache_tree(void);
  25 void cache_tree_free(struct cache_tree **);
  26 void cache_tree_invalidate_path(struct cache_tree *, const char *);
  27 struct cache_tree_sub *cache_tree_sub(struct cache_tree *, const char *);
  28
  29 void cache_tree_write(struct strbuf *, struct cache_tree *root);
  30 struct cache_tree *cache_tree_read(const char *buffer, unsigned long size);
  31
  32 int cache_tree_fully_valid(struct cache_tree *);
  33 int cache_tree_update(struct cache_tree *, struct cache_entry **, int, int);
  34
  35 int update_main_cache_tree(int);
  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
  43 /* error return codes */
  44 #define WRITE_TREE_UNREADABLE_INDEX (-1)
  45 #define WRITE_TREE_UNMERGED_INDEX (-2)
  46 #define WRITE_TREE_PREFIX_ERROR (-3)
  47
  48 int write_cache_as_tree(unsigned char *sha1, int flags, const char *prefix);
  49 void prime_cache_tree(struct cache_tree **, struct tree *);
  50
  51 extern int cache_tree_matches_traversal(struct cache_tree *, struct name_entry *ent, struct traverse_info *info);
  52
  53 #endif