[PATCH v2 2/3] attr: add GIT_ATTR_INDEX "direction"

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

This instructs attr mechanism, not to look into working .gitattributes
at all. Needed by tools that does not handle working directory, such
as "git archive".

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 attr.c |    4 +++-
 attr.h |    3 ++-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/attr.c b/attr.c
index 43259e5..37ca288 100644
--- a/attr.c
+++ b/attr.c
@@ -405,7 +405,7 @@ static struct attr_stack *read_attr(const char *path, int macro_ok)
 		if (!res)
 			res = read_attr_from_file(path, macro_ok);
 	}
-	else {
+	else if (direction == GIT_ATTR_CHECKIN) {
 		res = read_attr_from_file(path, macro_ok);
 		if (!res)
 			/*
@@ -415,6 +415,8 @@ static struct attr_stack *read_attr(const char *path, int macro_ok)
 			 */
 			res = read_attr_from_index(path, macro_ok);
 	}
+	else
+		res = read_attr_from_index(path, macro_ok);
 	if (!res)
 		res = xcalloc(1, sizeof(*res));
 	return res;
diff --git a/attr.h b/attr.h
index 3a2f4ec..69b5767 100644
--- a/attr.h
+++ b/attr.h
@@ -33,7 +33,8 @@ int git_checkattr(const char *path, int, struct git_attr_check *);
 
 enum git_attr_direction {
 	GIT_ATTR_CHECKIN,
-	GIT_ATTR_CHECKOUT
+	GIT_ATTR_CHECKOUT,
+	GIT_ATTR_INDEX,
 };
 void git_attr_set_direction(enum git_attr_direction, struct index_state *);
 
-- 
1.6.2.2.602.g83ee9f