builtin-am: implement --[no-]message-id, am.messageid

diff --git a/ewah/ewah_io.c b/ewah/ewah_io.c
index 1c2d7afd4cb9b70a324d355c3d69b732b181012b..43481b9c60c8afe30d6916650dd0e765065715c9 100644 (file)
--- a/ewah/ewah_io.c
+++ b/ewah/ewah_io.c
@@ -19,6 +19,7 @@
  */
 #include "git-compat-util.h"
 #include "ewok.h"
+#include "strbuf.h"
 
 int ewah_serialize_native(struct ewah_bitmap *self, int fd)
 {
@@ -110,6 +111,18 @@ int ewah_serialize(struct ewah_bitmap *self, int fd)
        return ewah_serialize_to(self, write_helper, (void *)(intptr_t)fd);
 }
 
+static int write_strbuf(void *user_data, const void *data, size_t len)
+{
+       struct strbuf *sb = user_data;
+       strbuf_add(sb, data, len);
+       return len;
+}
+
+int ewah_serialize_strbuf(struct ewah_bitmap *self, struct strbuf *sb)
+{
+       return ewah_serialize_to(self, write_strbuf, sb);
+}
+
 int ewah_read_mmap(struct ewah_bitmap *self, const void *map, size_t len)
 {
        const uint8_t *ptr = map;