Merge branch 'jk/ref-cache-non-repository-optim'
[git] / unpack-trees.h
1 #ifndef UNPACK_TREES_H
2 #define UNPACK_TREES_H
3
4 #include "string-list.h"
5
6 #define MAX_UNPACK_TREES 8
7
8 struct unpack_trees_options;
9 struct exclude_list;
10
11 typedef int (*merge_fn_t)(const struct cache_entry * const *src,
12                 struct unpack_trees_options *options);
13
14 enum unpack_trees_error_types {
15         ERROR_WOULD_OVERWRITE = 0,
16         ERROR_NOT_UPTODATE_FILE,
17         ERROR_NOT_UPTODATE_DIR,
18         ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN,
19         ERROR_WOULD_LOSE_UNTRACKED_REMOVED,
20         ERROR_BIND_OVERLAP,
21         ERROR_SPARSE_NOT_UPTODATE_FILE,
22         ERROR_WOULD_LOSE_ORPHANED_OVERWRITTEN,
23         ERROR_WOULD_LOSE_ORPHANED_REMOVED,
24         NB_UNPACK_TREES_ERROR_TYPES
25 };
26
27 /*
28  * Sets the list of user-friendly error messages to be used by the
29  * command "cmd" (either merge or checkout), and show_all_errors to 1.
30  */
31 void setup_unpack_trees_porcelain(struct unpack_trees_options *opts,
32                                   const char *cmd);
33
34 struct unpack_trees_options {
35         unsigned int reset,
36                      merge,
37                      update,
38                      index_only,
39                      nontrivial_merge,
40                      trivial_merges_only,
41                      verbose_update,
42                      aggressive,
43                      skip_unmerged,
44                      initial_checkout,
45                      diff_index_cached,
46                      debug_unpack,
47                      skip_sparse_checkout,
48                      gently,
49                      exiting_early,
50                      show_all_errors,
51                      dry_run;
52         const char *prefix;
53         int cache_bottom;
54         struct dir_struct *dir;
55         struct pathspec *pathspec;
56         merge_fn_t fn;
57         const char *msgs[NB_UNPACK_TREES_ERROR_TYPES];
58         /*
59          * Store error messages in an array, each case
60          * corresponding to a error message type
61          */
62         struct string_list unpack_rejects[NB_UNPACK_TREES_ERROR_TYPES];
63
64         int head_idx;
65         int merge_size;
66
67         struct cache_entry *df_conflict_entry;
68         void *unpack_data;
69
70         struct index_state *dst_index;
71         struct index_state *src_index;
72         struct index_state result;
73
74         struct exclude_list *el; /* for internal use */
75 };
76
77 extern int unpack_trees(unsigned n, struct tree_desc *t,
78                 struct unpack_trees_options *options);
79
80 int threeway_merge(const struct cache_entry * const *stages,
81                    struct unpack_trees_options *o);
82 int twoway_merge(const struct cache_entry * const *src,
83                  struct unpack_trees_options *o);
84 int bind_merge(const struct cache_entry * const *src,
85                struct unpack_trees_options *o);
86 int oneway_merge(const struct cache_entry * const *src,
87                  struct unpack_trees_options *o);
88
89 #endif