dir: create function count_slashes()

Similar functions exist in apply.c and builtin/show-branch.c for
counting the number of slashes in a string. Also in the later
patches, we introduce a third caller for the same. Hence, we unify
it now by cleaning the existing functions and declaring a common
function count_slashes in dir.h and implementing it in dir.c to
remove this code duplication.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Prathamesh Chavan <pc44800@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/dir.h b/dir.h
index bf23a470a..bdeeab7f7 100644
--- a/dir.h
+++ b/dir.h
@@ -196,6 +196,9 @@ struct dir_struct {
 	unsigned unmanaged_exclude_files;
 };
 
+/*Count the number of slashes for string s*/
+extern int count_slashes(const char *s);
+
 /*
  * The ordering of these constants is significant, with
  * higher-numbered match types signifying "closer" (i.e. more