grep: refactor grep_objects loop into its own function

Simplify cmd_grep by splitting off the loop that finds matches in a
list of trees.  So now the main part of cmd_grep looks like:

	if (!use_index) {
		int hit = grep_directory(&opt, paths);
		if (use_threads)
			hit |= wait_all();
		return !hit;
	}
	if (!list.nr) {
		if (!cached)
			setup_work_tree();
		int hit = grep_cache(&opt, paths, cached);
		if (use_threads)
			hit |= wait_all;
		return !hit;
	}
	hit = grep_objects(&opt, path, &list);
	if (use_threads)
		hit |= wait_all();
	return !hit;

and is ripe for further refactoring.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/grep.c b/builtin/grep.c
index b194ea3cea531f3a6c81d6d27b5b3028641ba9ce..5b8879f7b3d5440f18734ad03b196a6238964ec2 100644 (file)
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -675,6 +675,25 @@ static int grep_object(struct grep_opt *opt, const char **paths,
        die("unable to grep from object of type %s", typename(obj->type));
 }
 
+static int grep_objects(struct grep_opt *opt, const char **paths,
+                       const struct object_array *list)
+{
+       unsigned int i;
+       int hit = 0;
+       const unsigned int nr = list->nr;
+
+       for (i = 0; i < nr; i++) {
+               struct object *real_obj;
+               real_obj = deref_tag(list->objects[i].item, NULL, 0);
+               if (grep_object(opt, paths, real_obj, list->objects[i].name)) {
+                       hit = 1;
+                       if (opt->status_only)
+                               break;
+               }
+       }
+       return hit;
+}
+
 static int grep_directory(struct grep_opt *opt, const char **paths)
 {
        struct dir_struct dir;
@@ -1024,16 +1043,7 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
 
        if (cached)
                die("both --cached and trees are given.");
-
-       for (i = 0; i < list.nr; i++) {
-               struct object *real_obj;
-               real_obj = deref_tag(list.objects[i].item, NULL, 0);
-               if (grep_object(&opt, paths, real_obj, list.objects[i].name)) {
-                       hit = 1;
-                       if (opt.status_only)
-                               break;
-               }
-       }
+       hit = grep_objects(&opt, paths, &list);
 
        if (use_threads)
                hit |= wait_all();