[PATCH 4/7] merge: split cmd_merge()

[Felipe Contreras <felipe.contreras@gmail.com>]

We want to re-use most of cmd_merge() for a new command.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
---
 builtin/merge.c | 26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/builtin/merge.c b/builtin/merge.c
index 56a526f42c..2770dabf22 100644
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -1259,7 +1259,8 @@ static int merging_a_throwaway_tag(struct commit *commit)
 	return is_throwaway_tag;
 }
 
-int cmd_merge(int argc, const char **argv, const char *prefix)
+static int merge_common(int argc, const char **argv, const char *prefix,
+	const struct option *options, const char * const usage[])
 {
 	struct object_id result_tree, stash, head_oid;
 	struct commit *head_commit;
@@ -1273,7 +1274,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 	int orig_argc = argc;
 
 	if (argc == 2 && !strcmp(argv[1], "-h"))
-		usage_with_options(builtin_merge_usage, builtin_merge_options);
+		usage_with_options(usage, options);
 
 	/*
 	 * Check if we are _not_ on a detached HEAD, i.e. if there is a
@@ -1299,8 +1300,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 
 	if (branch_mergeoptions)
 		parse_branch_merge_options(branch_mergeoptions);
-	argc = parse_options(argc, argv, prefix, builtin_merge_options,
-			builtin_merge_usage, 0);
+	argc = parse_options(argc, argv, prefix, options, usage, 0);
 	if (shortlog_len < 0)
 		shortlog_len = (merge_log_config > 0) ? merge_log_config : 0;
 
@@ -1314,7 +1314,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 
 		if (orig_argc != 2)
 			usage_msg_opt(_("--abort expects no arguments"),
-			      builtin_merge_usage, builtin_merge_options);
+				usage, options);
 
 		if (!file_exists(git_path_merge_head(the_repository)))
 			die(_("There is no merge to abort (MERGE_HEAD missing)."));
@@ -1336,8 +1336,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 	if (quit_current_merge) {
 		if (orig_argc != 2)
 			usage_msg_opt(_("--quit expects no arguments"),
-				      builtin_merge_usage,
-				      builtin_merge_options);
+				usage, options);
 
 		remove_merge_branch_state(the_repository);
 		goto done;
@@ -1349,7 +1348,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 
 		if (orig_argc != 2)
 			usage_msg_opt(_("--continue expects no arguments"),
-			      builtin_merge_usage, builtin_merge_options);
+				usage, options);
 
 		if (!file_exists(git_path_merge_head(the_repository)))
 			die(_("There is no merge in progress (MERGE_HEAD missing)."));
@@ -1416,8 +1415,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 	}
 
 	if (!argc)
-		usage_with_options(builtin_merge_usage,
-			builtin_merge_options);
+		usage_with_options(usage, options);
 
 	if (!head_commit) {
 		/*
@@ -1458,8 +1456,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 				      argc, argv, &merge_msg);
 
 	if (!head_commit || !argc)
-		usage_with_options(builtin_merge_usage,
-			builtin_merge_options);
+		usage_with_options(usage, options);
 
 	if (verify_signatures) {
 		for (p = remoteheads; p; p = p->next) {
@@ -1740,3 +1737,8 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 	free(branch_to_free);
 	return ret;
 }
+
+int cmd_merge(int argc, const char **argv, const char *prefix)
+{
+	return merge_common(argc, argv, prefix, builtin_merge_options, builtin_merge_usage);
+}
-- 
2.32.0.40.gb9b36f9b52