Introduce diff_filespec_is_binary()

This replaces an explicit initialization of filespec->is_binary
field used for rename/break followed by direct access to that
field with a wrapper function that lazily iniaitlizes and
accesses the field.  We would add more attribute accesses for
the use of diff routines, and it would be better to make this
abstraction earlier.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/diffcore.h b/diffcore.h
index 0c8abb5b9..dcab7e20b 100644
--- a/diffcore.h
+++ b/diffcore.h
@@ -37,6 +37,7 @@ struct diff_filespec {
 #define DIFF_FILE_VALID(spec) (((spec)->mode) != 0)
 	unsigned should_free : 1; /* data should be free()'ed */
 	unsigned should_munmap : 1; /* data should be munmap()'ed */
+	unsigned checked_attr : 1;
 	unsigned is_binary : 1; /* data should be considered "binary" */
 };
 
@@ -46,6 +47,7 @@ extern void fill_filespec(struct diff_filespec *, const unsigned char *,
 
 extern int diff_populate_filespec(struct diff_filespec *, int);
 extern void diff_free_filespec_data(struct diff_filespec *);
+extern int diff_filespec_is_binary(struct diff_filespec *);
 
 struct diff_filepair {
 	struct diff_filespec *one;