cache-tree.h

   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
   8 struct cache_tree;
   9 struct 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
  17 struct 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
  25 struct cache_tree *cache_tree(void);
  26 void cache_tree_free(struct cache_tree **);
  27 void cache_tree_invalidate_path(struct index_state *, const char *);
  28 struct cache_tree_sub *cache_tree_sub(struct cache_tree *, const char *);
  29
  30 void cache_tree_write(struct strbuf *, struct cache_tree *root);
  31 struct cache_tree *cache_tree_read(const char *buffer, unsigned long size);
  32
  33 int cache_tree_fully_valid(struct cache_tree *);
  34 int cache_tree_update(struct index_state *, int);
  35
  36 /* bitmasks to write_cache_as_tree flags */
  37 #define WRITE_TREE_MISSING_OK 1
  38 #define WRITE_TREE_IGNORE_CACHE_TREE 2
  39 #define WRITE_TREE_DRY_RUN 4
  40 #define WRITE_TREE_SILENT 8
  41 #define WRITE_TREE_REPAIR 16
  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_index_as_tree(struct object_id *oid, struct index_state *index_state, const char *index_path, int flags, const char *prefix);
  49 void prime_cache_tree(struct index_state *, struct tree *);
  50
  51 int cache_tree_matches_traversal(struct cache_tree *, struct name_entry *ent, struct traverse_info *info);
  52
  53 #ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
  54 static inline int write_cache_as_tree(struct object_id *oid, int flags, const char *prefix)
  55 {
  56         return write_index_as_tree(oid, &the_index, get_index_file(), flags, prefix);
  57 }
  58
  59 static inline int update_main_cache_tree(int flags)
  60 {
  61         if (!the_index.cache_tree)
  62                 the_index.cache_tree = cache_tree();
  63         return cache_tree_update(&the_index, flags);
  64 }
  65 #endif
  66
  67 #endif