dir: move starts_with_dot(_dot)_slash to dir.h

Both submodule--helper.c and submodule-config.c have an implementation
of starts_with_dot_slash and starts_with_dot_dot_slash. The dir.h header
has starts_with_dot(_dot)_slash_native, which sets PATH_MATCH_NATIVE.

Move the helpers to dir.h as static inlines. I thought about renaming
them to postfix with _platform but that felt too long and ugly. On the
other hand it might be slightly confusing with _native.

This simplifies a submodule refactor which wants to use the helpers
earlier in the submodule--helper.c file.

Signed-off-by: Jacob Keller <jacob.keller@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/dir.h b/dir.h
index d7e71aa8da..fc9be7b427 100644
--- a/dir.h
+++ b/dir.h
@@ -676,4 +676,27 @@ static inline int starts_with_dot_dot_slash_native(const char *const path)
 	return path_match_flags(path, what | PATH_MATCH_NATIVE);
 }
 
+/**
+ * starts_with_dot_slash: convenience wrapper for
+ * patch_match_flags() with PATH_MATCH_STARTS_WITH_DOT_SLASH and
+ * PATH_MATCH_XPLATFORM.
+ */
+static inline int starts_with_dot_slash(const char *const path)
+{
+	const enum path_match_flags what = PATH_MATCH_STARTS_WITH_DOT_SLASH;
+
+	return path_match_flags(path, what | PATH_MATCH_XPLATFORM);
+}
+
+/**
+ * starts_with_dot_dot_slash: convenience wrapper for
+ * patch_match_flags() with PATH_MATCH_STARTS_WITH_DOT_DOT_SLASH and
+ * PATH_MATCH_XPLATFORM.
+ */
+static inline int starts_with_dot_dot_slash(const char *const path)
+{
+	const enum path_match_flags what = PATH_MATCH_STARTS_WITH_DOT_DOT_SLASH;
+
+	return path_match_flags(path, what | PATH_MATCH_XPLATFORM);
+}
 #endif