unpack-trees.h

   1 #ifndef UNPACK_TREES_H
   2 #define UNPACK_TREES_H
   3
   4 #include "cache.h"
   5 #include "strvec.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_CWD_IN_THE_WAY,
  23         ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN,
  24         ERROR_WOULD_LOSE_UNTRACKED_REMOVED,
  25         ERROR_BIND_OVERLAP,
  26         ERROR_WOULD_LOSE_SUBMODULE,
  27
  28         NB_UNPACK_TREES_ERROR_TYPES,
  29
  30         WARNING_SPARSE_NOT_UPTODATE_FILE,
  31         WARNING_SPARSE_UNMERGED_FILE,
  32         WARNING_SPARSE_ORPHANED_NOT_OVERWRITTEN,
  33
  34         NB_UNPACK_TREES_WARNING_TYPES,
  35 };
  36
  37 /*
  38  * Sets the list of user-friendly error messages to be used by the
  39  * command "cmd" (either merge or checkout), and show_all_errors to 1.
  40  */
  41 void setup_unpack_trees_porcelain(struct unpack_trees_options *opts,
  42                                   const char *cmd);
  43
  44 /*
  45  * Frees resources allocated by setup_unpack_trees_porcelain().
  46  */
  47 void clear_unpack_trees_porcelain(struct unpack_trees_options *opts);
  48
  49 enum unpack_trees_reset_type {
  50         UNPACK_RESET_NONE = 0,    /* traditional "false" value; still valid */
  51         UNPACK_RESET_INVALID = 1, /* "true" no longer valid; use below values */
  52         UNPACK_RESET_PROTECT_UNTRACKED,
  53         UNPACK_RESET_OVERWRITE_UNTRACKED
  54 };
  55
  56 struct unpack_trees_options {
  57         unsigned int merge,
  58                      update,
  59                      preserve_ignored,
  60                      clone,
  61                      index_only,
  62                      nontrivial_merge,
  63                      trivial_merges_only,
  64                      verbose_update,
  65                      aggressive,
  66                      skip_unmerged,
  67                      initial_checkout,
  68                      diff_index_cached,
  69                      debug_unpack,
  70                      skip_sparse_checkout,
  71                      quiet,
  72                      exiting_early,
  73                      show_all_errors,
  74                      dry_run,
  75                      skip_cache_tree_update;
  76         enum unpack_trees_reset_type reset;
  77         const char *prefix;
  78         int cache_bottom;
  79         struct pathspec *pathspec;
  80         merge_fn_t fn;
  81         const char *msgs[NB_UNPACK_TREES_WARNING_TYPES];
  82         struct strvec msgs_to_free;
  83         /*
  84          * Store error messages in an array, each case
  85          * corresponding to a error message type
  86          */
  87         struct string_list unpack_rejects[NB_UNPACK_TREES_WARNING_TYPES];
  88
  89         int head_idx;
  90         int merge_size;
  91
  92         struct cache_entry *df_conflict_entry;
  93         void *unpack_data;
  94
  95         struct index_state *dst_index;
  96         struct index_state *src_index;
  97         struct index_state result;
  98
  99         struct pattern_list *pl; /* for internal use */
 100         struct dir_struct *dir; /* for internal use only */
 101         struct checkout_metadata meta;
 102 };
 103
 104 int unpack_trees(unsigned n, struct tree_desc *t,
 105                  struct unpack_trees_options *options);
 106
 107 enum update_sparsity_result {
 108         UPDATE_SPARSITY_SUCCESS = 0,
 109         UPDATE_SPARSITY_WARNINGS = 1,
 110         UPDATE_SPARSITY_INDEX_UPDATE_FAILURES = -1,
 111         UPDATE_SPARSITY_WORKTREE_UPDATE_FAILURES = -2
 112 };
 113
 114 enum update_sparsity_result update_sparsity(struct unpack_trees_options *options);
 115
 116 int verify_uptodate(const struct cache_entry *ce,
 117                     struct unpack_trees_options *o);
 118
 119 int threeway_merge(const struct cache_entry * const *stages,
 120                    struct unpack_trees_options *o);
 121 int twoway_merge(const struct cache_entry * const *src,
 122                  struct unpack_trees_options *o);
 123 int bind_merge(const struct cache_entry * const *src,
 124                struct unpack_trees_options *o);
 125 int oneway_merge(const struct cache_entry * const *src,
 126                  struct unpack_trees_options *o);
 127 int stash_worktree_untracked_merge(const struct cache_entry * const *src,
 128                                    struct unpack_trees_options *o);
 129
 130 #endif