Allow cloning to an existing empty directory

diff --git a/unpack-trees.h b/unpack-trees.h
index a2df544d040adc21f7d854ad50c53e61cf74c9ae..0d26f3d73e773230972db86f34a5147ada881e8b 100644 (file)
--- a/unpack-trees.h
+++ b/unpack-trees.h
@@ -1,41 +1,56 @@
 #ifndef UNPACK_TREES_H
 #define UNPACK_TREES_H
 
+#define MAX_UNPACK_TREES 8
+
 struct unpack_trees_options;
 
 typedef int (*merge_fn_t)(struct cache_entry **src,
-               struct unpack_trees_options *options,
-               int remove);
+               struct unpack_trees_options *options);
+
+struct unpack_trees_error_msgs {
+       const char *would_overwrite;
+       const char *not_uptodate_file;
+       const char *not_uptodate_dir;
+       const char *would_lose_untracked;
+       const char *bind_overlap;
+};
 
 struct unpack_trees_options {
-       int reset;
-       int merge;
-       int update;
-       int index_only;
-       int nontrivial_merge;
-       int trivial_merges_only;
-       int verbose_update;
-       int aggressive;
-       int skip_unmerged;
-       int gently;
+       unsigned int reset:1,
+                    merge:1,
+                    update:1,
+                    index_only:1,
+                    nontrivial_merge:1,
+                    trivial_merges_only:1,
+                    verbose_update:1,
+                    aggressive:1,
+                    skip_unmerged:1,
+                    initial_checkout:1,
+                    gently:1;
        const char *prefix;
        int pos;
        struct dir_struct *dir;
        merge_fn_t fn;
+       struct unpack_trees_error_msgs msgs;
 
        int head_idx;
        int merge_size;
 
        struct cache_entry *df_conflict_entry;
        void *unpack_data;
+
+       struct index_state *dst_index;
+       struct index_state *src_index;
+       struct index_state result;
 };
 
 extern int unpack_trees(unsigned n, struct tree_desc *t,
                struct unpack_trees_options *options);
 
-int threeway_merge(struct cache_entry **stages, struct unpack_trees_options *o, int);
-int twoway_merge(struct cache_entry **src, struct unpack_trees_options *o, int);
-int bind_merge(struct cache_entry **src, struct unpack_trees_options *o, int);
-int oneway_merge(struct cache_entry **src, struct unpack_trees_options *o, int);
+int threeway_merge(struct cache_entry **stages, struct unpack_trees_options *o);
+int twoway_merge(struct cache_entry **src, struct unpack_trees_options *o);
+int bind_merge(struct cache_entry **src, struct unpack_trees_options *o);
+int oneway_merge(struct cache_entry **src, struct unpack_trees_options *o);
 
 #endif