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   1 #ifndef MERGE_RECURSIVE_H
   2 #define MERGE_RECURSIVE_H
   3
   4 #include "string-list.h"
   5 #include "unpack-trees.h"
   6
   7 struct commit;
   8
   9 struct repository;
  10
  11 struct merge_options {
  12         const char *ancestor;
  13         const char *branch1;
  14         const char *branch2;
  15         enum {
  16                 MERGE_RECURSIVE_NORMAL = 0,
  17                 MERGE_RECURSIVE_OURS,
  18                 MERGE_RECURSIVE_THEIRS
  19         } recursive_variant;
  20         const char *subtree_shift;
  21         unsigned buffer_output; /* 1: output at end, 2: keep buffered */
  22         unsigned renormalize : 1;
  23         long xdl_opts;
  24         int verbosity;
  25         int detect_directory_renames;
  26         int diff_detect_rename;
  27         int merge_detect_rename;
  28         int diff_rename_limit;
  29         int merge_rename_limit;
  30         int rename_score;
  31         int needed_rename_limit;
  32         int show_rename_progress;
  33         int call_depth;
  34         struct strbuf obuf;
  35         struct hashmap current_file_dir_set;
  36         struct string_list df_conflict_file_set;
  37         struct unpack_trees_options unpack_opts;
  38         struct index_state orig_index;
  39         struct repository *repo;
  40 };
  41
  42 /*
  43  * For dir_rename_entry, directory names are stored as a full path from the
  44  * toplevel of the repository and do not include a trailing '/'.  Also:
  45  *
  46  *   dir:                original name of directory being renamed
  47  *   non_unique_new_dir: if true, could not determine new_dir
  48  *   new_dir:            final name of directory being renamed
  49  *   possible_new_dirs:  temporary used to help determine new_dir; see comments
  50  *                       in get_directory_renames() for details
  51  */
  52 struct dir_rename_entry {
  53         struct hashmap_entry ent; /* must be the first member! */
  54         char *dir;
  55         unsigned non_unique_new_dir:1;
  56         struct strbuf new_dir;
  57         struct string_list possible_new_dirs;
  58 };
  59
  60 struct collision_entry {
  61         struct hashmap_entry ent; /* must be the first member! */
  62         char *target_file;
  63         struct string_list source_files;
  64         unsigned reported_already:1;
  65 };
  66
  67 static inline int merge_detect_rename(struct merge_options *o)
  68 {
  69         return o->merge_detect_rename >= 0 ? o->merge_detect_rename :
  70                 o->diff_detect_rename >= 0 ? o->diff_detect_rename : 1;
  71 }
  72
  73 /* merge_trees() but with recursive ancestor consolidation */
  74 int merge_recursive(struct merge_options *o,
  75                     struct commit *h1,
  76                     struct commit *h2,
  77                     struct commit_list *ancestors,
  78                     struct commit **result);
  79
  80 /* rename-detecting three-way merge, no recursion */
  81 int merge_trees(struct merge_options *o,
  82                 struct tree *head,
  83                 struct tree *merge,
  84                 struct tree *common,
  85                 struct tree **result);
  86
  87 /*
  88  * "git-merge-recursive" can be fed trees; wrap them into
  89  * virtual commits and call merge_recursive() proper.
  90  */
  91 int merge_recursive_generic(struct merge_options *o,
  92                             const struct object_id *head,
  93                             const struct object_id *merge,
  94                             int num_ca,
  95                             const struct object_id **ca,
  96                             struct commit **result);
  97
  98 void init_merge_options(struct merge_options *o,
  99                         struct repository *repo);
 100 struct tree *write_tree_from_memory(struct merge_options *o);
 101
 102 int parse_merge_opt(struct merge_options *out, const char *s);
 103
 104 #endif