diff.c: make binary patch reversible.

This matches the format previous "git-apply --reverse" update
expects.

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/diff.c b/diff.c
index 7a238d023336d4340efd67534dae4ed23dd5d3c0..b8161960e6dbee0b8ad13bd1f34bfc843c69c8f5 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -838,7 +838,7 @@ static unsigned char *deflate_it(char *data,
        return deflated;
 }
 
-static void emit_binary_diff(mmfile_t *one, mmfile_t *two)
+static void emit_binary_diff_body(mmfile_t *one, mmfile_t *two)
 {
        void *cp;
        void *delta;
@@ -849,7 +849,6 @@ static void emit_binary_diff(mmfile_t *one, mmfile_t *two)
        unsigned long deflate_size;
        unsigned long data_size;
 
-       printf("GIT binary patch\n");
        /* We could do deflated delta, or we could do just deflated two,
         * whichever is smaller.
         */
@@ -898,6 +897,13 @@ static void emit_binary_diff(mmfile_t *one, mmfile_t *two)
        free(data);
 }
 
+static void emit_binary_diff(mmfile_t *one, mmfile_t *two)
+{
+       printf("GIT binary patch\n");
+       emit_binary_diff_body(one, two);
+       emit_binary_diff_body(two, one);
+}
+
 #define FIRST_FEW_BYTES 8000
 static int mmfile_is_binary(mmfile_t *mf)
 {