[PATCH 3/8] mv: flatten error handling code block

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 builtin/mv.c | 35 +++++++++++++++++------------------
 1 file changed, 17 insertions(+), 18 deletions(-)

diff --git a/builtin/mv.c b/builtin/mv.c
index a7e02c0..5c6f58f 100644
--- a/builtin/mv.c
+++ b/builtin/mv.c
@@ -58,6 +58,11 @@ static const char *add_slash(const char *path)
 	return path;
 }
 
+static void move_up_one(void *p, int nmemb, int size)
+{
+	memmove(p, (char*)p + size, nmemb * size);
+}
+
 static struct lock_file lock_file;
 #define SUBMODULE_WITH_GITDIR ((const char *)1)
 
@@ -224,24 +229,18 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
 		else
 			string_list_insert(&src_for_dst, dst);
 
-		if (bad) {
-			if (ignore_errors) {
-				if (--argc > 0) {
-					memmove(source + i, source + i + 1,
-						(argc - i) * sizeof(char *));
-					memmove(destination + i,
-						destination + i + 1,
-						(argc - i) * sizeof(char *));
-					memmove(modes + i, modes + i + 1,
-						(argc - i) * sizeof(enum update_mode));
-					memmove(submodule_gitfile + i,
-						submodule_gitfile + i + 1,
-						(argc - i) * sizeof(char *));
-					i--;
-				}
-			} else
-				die (_("%s, source=%s, destination=%s"),
-				     bad, src, dst);
+		if (!bad)
+			continue;
+		if (!ignore_errors)
+			die (_("%s, source=%s, destination=%s"),
+			     bad, src, dst);
+		if (--argc > 0) {
+			int n = argc - i;
+			move_up_one(source + i, n, sizeof(*source));
+			move_up_one(destination + i, n, sizeof(*destination));
+			move_up_one(modes + i, n, sizeof(*modes));
+			move_up_one(submodule_gitfile + i, n, sizeof(*submodule_gitfile));
+			i--;
 		}
 	}
 
-- 
2.1.0.rc0.78.gc0d8480