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   1#ifndef UNPACK_TREES_H
   2#define UNPACK_TREES_H
   3
   4#define MAX_UNPACK_TREES 8
   5
   6struct unpack_trees_options;
   7struct exclude_list;
   8
   9typedef int (*merge_fn_t)(struct cache_entry **src,
  10                struct unpack_trees_options *options);
  11
  12enum unpack_trees_error_types {
  13        ERROR_WOULD_OVERWRITE = 0,
  14        ERROR_NOT_UPTODATE_FILE,
  15        ERROR_NOT_UPTODATE_DIR,
  16        ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN,
  17        ERROR_WOULD_LOSE_UNTRACKED_REMOVED,
  18        ERROR_BIND_OVERLAP,
  19        ERROR_SPARSE_NOT_UPTODATE_FILE,
  20        ERROR_WOULD_LOSE_ORPHANED_OVERWRITTEN,
  21        ERROR_WOULD_LOSE_ORPHANED_REMOVED,
  22        NB_UNPACK_TREES_ERROR_TYPES
  23};
  24
  25struct unpack_trees_options {
  26        unsigned int reset,
  27                     merge,
  28                     update,
  29                     index_only,
  30                     nontrivial_merge,
  31                     trivial_merges_only,
  32                     verbose_update,
  33                     aggressive,
  34                     skip_unmerged,
  35                     initial_checkout,
  36                     diff_index_cached,
  37                     debug_unpack,
  38                     skip_sparse_checkout,
  39                     gently;
  40        const char *prefix;
  41        int cache_bottom;
  42        struct dir_struct *dir;
  43        merge_fn_t fn;
  44        const char *msgs[NB_UNPACK_TREES_ERROR_TYPES];
  45
  46        int head_idx;
  47        int merge_size;
  48
  49        struct cache_entry *df_conflict_entry;
  50        void *unpack_data;
  51
  52        struct index_state *dst_index;
  53        struct index_state *src_index;
  54        struct index_state result;
  55
  56        struct exclude_list *el; /* for internal use */
  57};
  58
  59extern int unpack_trees(unsigned n, struct tree_desc *t,
  60                struct unpack_trees_options *options);
  61
  62int threeway_merge(struct cache_entry **stages, struct unpack_trees_options *o);
  63int twoway_merge(struct cache_entry **src, struct unpack_trees_options *o);
  64int bind_merge(struct cache_entry **src, struct unpack_trees_options *o);
  65int oneway_merge(struct cache_entry **src, struct unpack_trees_options *o);
  66
  67#endif