global: replace hard coded hash length

With sha1 we had a guaranteed length of 40 hex chars. This changes now
that we have to support sha256 with 64 hex chars... Support both.

Signed-off-by: Christian Hesse <mail@eworm.de>

filters/commit-links.sh

@@ -19,7 +19,7 @@ regex=''
 
 # This expression generates links to commits referenced by their SHA1.
 regex=$regex'
-s|\b([0-9a-fA-F]{7,40})\b|<a href="./?id=\1">\1</a>|g'
+s|\b([0-9a-fA-F]{7,64})\b|<a href="./?id=\1">\1</a>|g'
 
 # This expression generates links to a fictional bugtracker.
 regex=$regex'

parsing.c

@@ -127,7 +127,6 @@ static int end_of_header(const char *p)
 
 struct commitinfo *cgit_parse_commit(struct commit *commit)
 {
-	const int oid_hex_len = 40;
 	struct commitinfo *ret;
 	const char *p = repo_get_commit_buffer(the_repository, commit, NULL);
 	const char *t;
@@ -140,10 +139,10 @@ struct commitinfo *cgit_parse_commit(struct commit *commit)
 
 	if (!skip_prefix(p, "tree ", &p))
 		die("Bad commit: %s", oid_to_hex(&commit->object.oid));
-	p += oid_hex_len + 1;
+	p += the_hash_algo->hexsz + 1;
 
 	while (skip_prefix(p, "parent ", &p))
-		p += oid_hex_len + 1;
+		p += the_hash_algo->hexsz + 1;
 
 	if (p && skip_prefix(p, "author ", &p)) {
 		parse_user(p, &ret->author, &ret->author_email,

tests/t0105-commit.sh

@@ -25,7 +25,7 @@ test_expect_success 'get root commit' '
 '
 
 test_expect_success 'root commit contains diffstat' '
-	grep "<a href=./foo/diff/file-1.id=[0-9a-f]\{40\}.>file-1</a>" tmp
+	grep "<a href=./foo/diff/file-1.id=[0-9a-f]\{40,64\}.>file-1</a>" tmp
 '
 
 test_expect_success 'root commit contains diff' '

ui-patch.c

@@ -61,7 +61,7 @@ void cgit_print_patch(const char *new_rev, const char *old_rev,
 	}
 
 	if (is_null_oid(&old_rev_oid)) {
-		memcpy(rev_range, oid_to_hex(&new_rev_oid), GIT_SHA1_HEXSZ + 1);
+		memcpy(rev_range, oid_to_hex(&new_rev_oid), the_hash_algo->hexsz + 1);
 	} else {
 		xsnprintf(rev_range, REV_RANGE_LEN, "%s..%s", oid_to_hex(&old_rev_oid),
 			oid_to_hex(&new_rev_oid));