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   1 #ifndef UNPACK_TREES_H
   2 #define UNPACK_TREES_H
   3
   4 #include "tree-walk.h"
   5 #include "string-list.h"
   6
   7 #define MAX_UNPACK_TREES 8
   8
   9 struct unpack_trees_options;
  10 struct exclude_list;
  11
  12 typedef int (*merge_fn_t)(const struct cache_entry * const *src,
  13                 struct unpack_trees_options *options);
  14
  15 enum unpack_trees_error_types {
  16         ERROR_WOULD_OVERWRITE = 0,
  17         ERROR_NOT_UPTODATE_FILE,
  18         ERROR_NOT_UPTODATE_DIR,
  19         ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN,
  20         ERROR_WOULD_LOSE_UNTRACKED_REMOVED,
  21         ERROR_BIND_OVERLAP,
  22         ERROR_SPARSE_NOT_UPTODATE_FILE,
  23         ERROR_WOULD_LOSE_ORPHANED_OVERWRITTEN,
  24         ERROR_WOULD_LOSE_ORPHANED_REMOVED,
  25         ERROR_WOULD_LOSE_SUBMODULE,
  26         NB_UNPACK_TREES_ERROR_TYPES
  27 };
  28
  29 /*
  30  * Sets the list of user-friendly error messages to be used by the
  31  * command "cmd" (either merge or checkout), and show_all_errors to 1.
  32  */
  33 void setup_unpack_trees_porcelain(struct unpack_trees_options *opts,
  34                                   const char *cmd);
  35
  36 struct unpack_trees_options {
  37         unsigned int reset,
  38                      merge,
  39                      update,
  40                      index_only,
  41                      nontrivial_merge,
  42                      trivial_merges_only,
  43                      verbose_update,
  44                      aggressive,
  45                      skip_unmerged,
  46                      initial_checkout,
  47                      diff_index_cached,
  48                      debug_unpack,
  49                      skip_sparse_checkout,
  50                      gently,
  51                      exiting_early,
  52                      show_all_errors,
  53                      dry_run;
  54         const char *prefix;
  55         int cache_bottom;
  56         struct dir_struct *dir;
  57         struct pathspec *pathspec;
  58         merge_fn_t fn;
  59         const char *msgs[NB_UNPACK_TREES_ERROR_TYPES];
  60         /*
  61          * Store error messages in an array, each case
  62          * corresponding to a error message type
  63          */
  64         struct string_list unpack_rejects[NB_UNPACK_TREES_ERROR_TYPES];
  65
  66         int head_idx;
  67         int merge_size;
  68
  69         struct cache_entry *df_conflict_entry;
  70         void *unpack_data;
  71
  72         struct index_state *dst_index;
  73         struct index_state *src_index;
  74         struct index_state result;
  75
  76         struct exclude_list *el; /* for internal use */
  77 };
  78
  79 extern int unpack_trees(unsigned n, struct tree_desc *t,
  80                 struct unpack_trees_options *options);
  81
  82 int verify_uptodate(const struct cache_entry *ce,
  83                     struct unpack_trees_options *o);
  84
  85 int threeway_merge(const struct cache_entry * const *stages,
  86                    struct unpack_trees_options *o);
  87 int twoway_merge(const struct cache_entry * const *src,
  88                  struct unpack_trees_options *o);
  89 int bind_merge(const struct cache_entry * const *src,
  90                struct unpack_trees_options *o);
  91 int oneway_merge(const struct cache_entry * const *src,
  92                  struct unpack_trees_options *o);
  93
  94 #endif