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