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   1 #ifndef UNPACK_TREES_H
   2 #define UNPACK_TREES_H
   3
   4 #include "string-list.h"
   5
   6 #define MAX_UNPACK_TREES 8
   7
   8 struct unpack_trees_options;
   9 struct exclude_list;
  10
  11 typedef int (*merge_fn_t)(struct cache_entry **src,
  12                 struct unpack_trees_options *options);
  13
  14 enum unpack_trees_error_types {
  15         ERROR_WOULD_OVERWRITE = 0,
  16         ERROR_NOT_UPTODATE_FILE,
  17         ERROR_NOT_UPTODATE_DIR,
  18         ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN,
  19         ERROR_WOULD_LOSE_UNTRACKED_REMOVED,
  20         ERROR_BIND_OVERLAP,
  21         ERROR_SPARSE_NOT_UPTODATE_FILE,
  22         ERROR_WOULD_LOSE_ORPHANED_OVERWRITTEN,
  23         ERROR_WOULD_LOSE_ORPHANED_REMOVED,
  24         NB_UNPACK_TREES_ERROR_TYPES
  25 };
  26
  27 /*
  28  * Sets the list of user-friendly error messages to be used by the
  29  * command "cmd" (either merge or checkout), and show_all_errors to 1.
  30  */
  31 void setup_unpack_trees_porcelain(struct unpack_trees_options *opts,
  32                                   const char *cmd);
  33
  34 struct unpack_trees_options {
  35         unsigned int reset,
  36                      merge,
  37                      update,
  38                      index_only,
  39                      nontrivial_merge,
  40                      trivial_merges_only,
  41                      verbose_update,
  42                      aggressive,
  43                      skip_unmerged,
  44                      initial_checkout,
  45                      diff_index_cached,
  46                      debug_unpack,
  47                      skip_sparse_checkout,
  48                      gently,
  49                      exiting_early,
  50                      show_all_errors,
  51                      dry_run;
  52         const char *prefix;
  53         int cache_bottom;
  54         struct dir_struct *dir;
  55         merge_fn_t fn;
  56         const char *msgs[NB_UNPACK_TREES_ERROR_TYPES];
  57         /*
  58          * Store error messages in an array, each case
  59          * corresponding to a error message type
  60          */
  61         struct string_list unpack_rejects[NB_UNPACK_TREES_ERROR_TYPES];
  62
  63         int head_idx;
  64         int merge_size;
  65
  66         struct cache_entry *df_conflict_entry;
  67         void *unpack_data;
  68
  69         struct index_state *dst_index;
  70         struct index_state *src_index;
  71         struct index_state result;
  72
  73         struct exclude_list *el; /* for internal use */
  74 };
  75
  76 extern int unpack_trees(unsigned n, struct tree_desc *t,
  77                 struct unpack_trees_options *options);
  78
  79 int threeway_merge(struct cache_entry **stages, struct unpack_trees_options *o);
  80 int twoway_merge(struct cache_entry **src, struct unpack_trees_options *o);
  81 int bind_merge(struct cache_entry **src, struct unpack_trees_options *o);
  82 int oneway_merge(struct cache_entry **src, struct unpack_trees_options *o);
  83
  84 #endif