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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 MAX_TRAVERSE_TREES
  10
  11 struct cache_entry;
  12 struct unpack_trees_options;
  13 struct pattern_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_WOULD_LOSE_SUBMODULE,
  26
  27         NB_UNPACK_TREES_ERROR_TYPES,
  28
  29         WARNING_SPARSE_NOT_UPTODATE_FILE,
  30         WARNING_SPARSE_UNMERGED_FILE,
  31         WARNING_SPARSE_ORPHANED_NOT_OVERWRITTEN,
  32
  33         NB_UNPACK_TREES_WARNING_TYPES,
  34 };
  35
  36 /*
  37  * Sets the list of user-friendly error messages to be used by the
  38  * command "cmd" (either merge or checkout), and show_all_errors to 1.
  39  */
  40 void setup_unpack_trees_porcelain(struct unpack_trees_options *opts,
  41                                   const char *cmd);
  42
  43 /*
  44  * Frees resources allocated by setup_unpack_trees_porcelain().
  45  */
  46 void clear_unpack_trees_porcelain(struct unpack_trees_options *opts);
  47
  48 struct unpack_trees_options {
  49         unsigned int reset,
  50                      merge,
  51                      update,
  52                      clone,
  53                      index_only,
  54                      nontrivial_merge,
  55                      trivial_merges_only,
  56                      verbose_update,
  57                      aggressive,
  58                      skip_unmerged,
  59                      initial_checkout,
  60                      diff_index_cached,
  61                      debug_unpack,
  62                      skip_sparse_checkout,
  63                      quiet,
  64                      exiting_early,
  65                      show_all_errors,
  66                      dry_run;
  67         const char *prefix;
  68         int cache_bottom;
  69         struct dir_struct *dir;
  70         struct pathspec *pathspec;
  71         merge_fn_t fn;
  72         const char *msgs[NB_UNPACK_TREES_WARNING_TYPES];
  73         struct argv_array msgs_to_free;
  74         /*
  75          * Store error messages in an array, each case
  76          * corresponding to a error message type
  77          */
  78         struct string_list unpack_rejects[NB_UNPACK_TREES_WARNING_TYPES];
  79
  80         int head_idx;
  81         int merge_size;
  82
  83         struct cache_entry *df_conflict_entry;
  84         void *unpack_data;
  85
  86         struct index_state *dst_index;
  87         struct index_state *src_index;
  88         struct index_state result;
  89
  90         struct pattern_list *pl; /* for internal use */
  91 };
  92
  93 int unpack_trees(unsigned n, struct tree_desc *t,
  94                  struct unpack_trees_options *options);
  95
  96 enum update_sparsity_result {
  97         UPDATE_SPARSITY_SUCCESS = 0,
  98         UPDATE_SPARSITY_WARNINGS = 1,
  99         UPDATE_SPARSITY_INDEX_UPDATE_FAILURES = -1,
 100         UPDATE_SPARSITY_WORKTREE_UPDATE_FAILURES = -2
 101 };
 102
 103 enum update_sparsity_result update_sparsity(struct unpack_trees_options *options);
 104
 105 int verify_uptodate(const struct cache_entry *ce,
 106                     struct unpack_trees_options *o);
 107
 108 int threeway_merge(const struct cache_entry * const *stages,
 109                    struct unpack_trees_options *o);
 110 int twoway_merge(const struct cache_entry * const *src,
 111                  struct unpack_trees_options *o);
 112 int bind_merge(const struct cache_entry * const *src,
 113                struct unpack_trees_options *o);
 114 int oneway_merge(const struct cache_entry * const *src,
 115                  struct unpack_trees_options *o);
 116
 117 #endif