hashmap: factor out getting a hash code from a SHA1
Copying the first bytes of a SHA1 is duplicated in six places,
however, the implications (the actual value would depend on the
endianness of the platform) is documented only once.
Add a properly documented API for this.
Signed-off-by: Karsten Blees <blees@dcon.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/diffcore-rename.c b/diffcore-rename.c
index 749a35d..6fa97d4 100644
--- a/diffcore-rename.c
+++ b/diffcore-rename.c
@@ -242,14 +242,12 @@
static unsigned int hash_filespec(struct diff_filespec *filespec)
{
- unsigned int hash;
if (!filespec->sha1_valid) {
if (diff_populate_filespec(filespec, 0))
return 0;
hash_sha1_file(filespec->data, filespec->size, "blob", filespec->sha1);
}
- memcpy(&hash, filespec->sha1, sizeof(hash));
- return hash;
+ return sha1hash(filespec->sha1);
}
static int find_identical_files(struct hashmap *srcs,
