Build-in merge-recursive
This makes write_tree_from_memory(), which writes the active cache as
a tree and returns the struct tree for it, available to other code. It
also makes available merge_trees(), which does the internal merge of
two trees with a known base, and merge_recursive(), which does the
recursive internal merge of two commits with a list of common
ancestors.
The first two of these will be used by checkout -m, and the third is
presumably useful in general, although the implementation of checkout
-m which entirely matches the behavior of the shell version does not
use it (since it ignores the difference of ancestry between the old
branch and the new branch).
Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
diff --git a/Makefile b/Makefile
index 5aac0c0..6f08bcc 100644
--- a/Makefile
+++ b/Makefile
@@ -256,7 +256,6 @@
git-upload-pack$X \
git-pack-redundant$X git-var$X \
git-merge-tree$X git-imap-send$X \
- git-merge-recursive$X \
$(EXTRA_PROGRAMS)
# Empty...
@@ -360,6 +359,7 @@
builtin-merge-base.o \
builtin-merge-file.o \
builtin-merge-ours.o \
+ builtin-merge-recursive.o \
builtin-mv.o \
builtin-name-rev.o \
builtin-pack-objects.o \
diff --git a/merge-recursive.c b/builtin-merge-recursive.c
similarity index 98%
rename from merge-recursive.c
rename to builtin-merge-recursive.c
index bdf03b1..45d4601 100644
--- a/merge-recursive.c
+++ b/builtin-merge-recursive.c
@@ -7,6 +7,7 @@
#include "cache-tree.h"
#include "commit.h"
#include "blob.h"
+#include "builtin.h"
#include "tree-walk.h"
#include "diff.h"
#include "diffcore.h"
@@ -17,6 +18,7 @@
#include "xdiff-interface.h"
#include "interpolate.h"
#include "attr.h"
+#include "merge-recursive.h"
static int subtree_merge;
@@ -232,7 +234,7 @@
return 0;
}
-static struct tree *git_write_tree(void)
+struct tree *write_tree_from_memory(void)
{
struct tree *result = NULL;
@@ -1495,12 +1497,12 @@
return clean_merge;
}
-static int merge_trees(struct tree *head,
- struct tree *merge,
- struct tree *common,
- const char *branch1,
- const char *branch2,
- struct tree **result)
+int merge_trees(struct tree *head,
+ struct tree *merge,
+ struct tree *common,
+ const char *branch1,
+ const char *branch2,
+ struct tree **result)
{
int code, clean;
@@ -1552,7 +1554,7 @@
clean = 1;
if (index_only)
- *result = git_write_tree();
+ *result = write_tree_from_memory();
return clean;
}
@@ -1572,12 +1574,12 @@
* Merge the commits h1 and h2, return the resulting virtual
* commit object and a flag indicating the cleanness of the merge.
*/
-static int merge(struct commit *h1,
- struct commit *h2,
- const char *branch1,
- const char *branch2,
- struct commit_list *ca,
- struct commit **result)
+int merge_recursive(struct commit *h1,
+ struct commit *h2,
+ const char *branch1,
+ const char *branch2,
+ struct commit_list *ca,
+ struct commit **result)
{
struct commit_list *iter;
struct commit *merged_common_ancestors;
@@ -1622,11 +1624,11 @@
* "conflicts" were already resolved.
*/
discard_cache();
- merge(merged_common_ancestors, iter->item,
- "Temporary merge branch 1",
- "Temporary merge branch 2",
- NULL,
- &merged_common_ancestors);
+ merge_recursive(merged_common_ancestors, iter->item,
+ "Temporary merge branch 1",
+ "Temporary merge branch 2",
+ NULL,
+ &merged_common_ancestors);
call_depth--;
if (!merged_common_ancestors)
@@ -1695,7 +1697,7 @@
return git_default_config(var, value);
}
-int main(int argc, char *argv[])
+int cmd_merge_recursive(int argc, const char **argv, const char *prefix)
{
static const char *bases[20];
static unsigned bases_count = 0;
@@ -1749,7 +1751,7 @@
struct commit *ancestor = get_ref(bases[i]);
ca = commit_list_insert(ancestor, &ca);
}
- clean = merge(h1, h2, branch1, branch2, ca, &result);
+ clean = merge_recursive(h1, h2, branch1, branch2, ca, &result);
if (active_cache_changed &&
(write_cache(index_fd, active_cache, active_nr) ||
diff --git a/builtin.h b/builtin.h
index cb675c4..428160d 100644
--- a/builtin.h
+++ b/builtin.h
@@ -57,6 +57,7 @@
extern int cmd_merge_base(int argc, const char **argv, const char *prefix);
extern int cmd_merge_ours(int argc, const char **argv, const char *prefix);
extern int cmd_merge_file(int argc, const char **argv, const char *prefix);
+extern int cmd_merge_recursive(int argc, const char **argv, const char *prefix);
extern int cmd_mv(int argc, const char **argv, const char *prefix);
extern int cmd_name_rev(int argc, const char **argv, const char *prefix);
extern int cmd_pack_objects(int argc, const char **argv, const char *prefix);
diff --git a/git.c b/git.c
index 15fec89..114ea75 100644
--- a/git.c
+++ b/git.c
@@ -330,6 +330,7 @@
{ "merge-base", cmd_merge_base, RUN_SETUP },
{ "merge-file", cmd_merge_file },
{ "merge-ours", cmd_merge_ours, RUN_SETUP },
+ { "merge-recursive", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE },
{ "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE },
{ "name-rev", cmd_name_rev, RUN_SETUP },
{ "pack-objects", cmd_pack_objects, RUN_SETUP },
diff --git a/merge-recursive.h b/merge-recursive.h
new file mode 100644
index 0000000..f37630a
--- /dev/null
+++ b/merge-recursive.h
@@ -0,0 +1,20 @@
+#ifndef MERGE_RECURSIVE_H
+#define MERGE_RECURSIVE_H
+
+int merge_recursive(struct commit *h1,
+ struct commit *h2,
+ const char *branch1,
+ const char *branch2,
+ struct commit_list *ancestors,
+ struct commit **result);
+
+int merge_trees(struct tree *head,
+ struct tree *merge,
+ struct tree *common,
+ const char *branch1,
+ const char *branch2,
+ struct tree **result);
+
+struct tree *write_tree_from_memory(void);
+
+#endif
