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   1 #ifndef UNPACK_TREES_H
   2 #define UNPACK_TREES_H
   3
   4 #include "cache.h"
   5 #include "argv-array.h"
   6 #include "string-list.h"
   7 #include "tree-walk.h"
   8
   9 #define MAX_UNPACK_TREES 8
  10
  11 struct cache_entry;
  12 struct unpack_trees_options;
  13 struct exclude_list;
  14
  15 typedef int (*merge_fn_t)(const struct cache_entry * const *src,
  16                 struct unpack_trees_options *options);
  17
  18 enum unpack_trees_error_types {
  19         ERROR_WOULD_OVERWRITE = 0,
  20         ERROR_NOT_UPTODATE_FILE,
  21         ERROR_NOT_UPTODATE_DIR,
  22         ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN,
  23         ERROR_WOULD_LOSE_UNTRACKED_REMOVED,
  24         ERROR_BIND_OVERLAP,
  25         ERROR_SPARSE_NOT_UPTODATE_FILE,
  26         ERROR_WOULD_LOSE_ORPHANED_OVERWRITTEN,
  27         ERROR_WOULD_LOSE_ORPHANED_REMOVED,
  28         ERROR_WOULD_LOSE_SUBMODULE,
  29         NB_UNPACK_TREES_ERROR_TYPES
  30 };
  31
  32 /*
  33  * Sets the list of user-friendly error messages to be used by the
  34  * command "cmd" (either merge or checkout), and show_all_errors to 1.
  35  */
  36 void setup_unpack_trees_porcelain(struct unpack_trees_options *opts,
  37                                   const char *cmd);
  38
  39 /*
  40  * Frees resources allocated by setup_unpack_trees_porcelain().
  41  */
  42 void clear_unpack_trees_porcelain(struct unpack_trees_options *opts);
  43
  44 struct unpack_trees_options {
  45         unsigned int reset,
  46                      merge,
  47                      update,
  48                      clone,
  49                      index_only,
  50                      nontrivial_merge,
  51                      trivial_merges_only,
  52                      verbose_update,
  53                      aggressive,
  54                      skip_unmerged,
  55                      initial_checkout,
  56                      diff_index_cached,
  57                      debug_unpack,
  58                      skip_sparse_checkout,
  59                      gently,
  60                      exiting_early,
  61                      show_all_errors,
  62                      dry_run;
  63         const char *prefix;
  64         int cache_bottom;
  65         struct dir_struct *dir;
  66         struct pathspec *pathspec;
  67         merge_fn_t fn;
  68         const char *msgs[NB_UNPACK_TREES_ERROR_TYPES];
  69         struct argv_array msgs_to_free;
  70         /*
  71          * Store error messages in an array, each case
  72          * corresponding to a error message type
  73          */
  74         struct string_list unpack_rejects[NB_UNPACK_TREES_ERROR_TYPES];
  75
  76         int head_idx;
  77         int merge_size;
  78
  79         struct cache_entry *df_conflict_entry;
  80         void *unpack_data;
  81
  82         struct index_state *dst_index;
  83         struct index_state *src_index;
  84         struct index_state result;
  85
  86         struct exclude_list *el; /* for internal use */
  87 };
  88
  89 int unpack_trees(unsigned n, struct tree_desc *t,
  90                  struct unpack_trees_options *options);
  91
  92 int verify_uptodate(const struct cache_entry *ce,
  93                     struct unpack_trees_options *o);
  94
  95 int threeway_merge(const struct cache_entry * const *stages,
  96                    struct unpack_trees_options *o);
  97 int twoway_merge(const struct cache_entry * const *src,
  98                  struct unpack_trees_options *o);
  99 int bind_merge(const struct cache_entry * const *src,
 100                struct unpack_trees_options *o);
 101 int oneway_merge(const struct cache_entry * const *src,
 102                  struct unpack_trees_options *o);
 103
 104 #endif