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   1 #ifndef UNPACK_TREES_H
   2 #define UNPACK_TREES_H
   3
   4 #include "tree-walk.h"
   5 #include "argv-array.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 /*
  37  * Frees resources allocated by setup_unpack_trees_porcelain().
  38  */
  39 void clear_unpack_trees_porcelain(struct unpack_trees_options *opts);
  40
  41 struct unpack_trees_options {
  42         unsigned int reset,
  43                      merge,
  44                      update,
  45                      clone,
  46                      index_only,
  47                      nontrivial_merge,
  48                      trivial_merges_only,
  49                      verbose_update,
  50                      aggressive,
  51                      skip_unmerged,
  52                      initial_checkout,
  53                      diff_index_cached,
  54                      debug_unpack,
  55                      skip_sparse_checkout,
  56                      gently,
  57                      exiting_early,
  58                      show_all_errors,
  59                      dry_run;
  60         const char *prefix;
  61         int cache_bottom;
  62         struct dir_struct *dir;
  63         struct pathspec *pathspec;
  64         merge_fn_t fn;
  65         const char *msgs[NB_UNPACK_TREES_ERROR_TYPES];
  66         struct argv_array msgs_to_free;
  67         /*
  68          * Store error messages in an array, each case
  69          * corresponding to a error message type
  70          */
  71         struct string_list unpack_rejects[NB_UNPACK_TREES_ERROR_TYPES];
  72
  73         int head_idx;
  74         int merge_size;
  75
  76         struct cache_entry *df_conflict_entry;
  77         void *unpack_data;
  78
  79         struct index_state *dst_index;
  80         struct index_state *src_index;
  81         struct index_state result;
  82
  83         struct exclude_list *el; /* for internal use */
  84 };
  85
  86 extern int unpack_trees(unsigned n, struct tree_desc *t,
  87                 struct unpack_trees_options *options);
  88
  89 int verify_uptodate(const struct cache_entry *ce,
  90                     struct unpack_trees_options *o);
  91
  92 int threeway_merge(const struct cache_entry * const *stages,
  93                    struct unpack_trees_options *o);
  94 int twoway_merge(const struct cache_entry * const *src,
  95                  struct unpack_trees_options *o);
  96 int bind_merge(const struct cache_entry * const *src,
  97                struct unpack_trees_options *o);
  98 int oneway_merge(const struct cache_entry * const *src,
  99                  struct unpack_trees_options *o);
 100
 101 #endif