git-svn: avoid md5 calculation entirely if SVN doesn't provide one

There's no point in calculating an MD5 if we're not going to use
it.  We'll also avoid the possibility of there being a bug in the
Perl MD5 library not being able to handle zero-sized files.

This is a followup to 20b3d206ac,
which allows us to track repositories that do not provide MD5
checksums.

Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Eric Wong 2007-05-27 15:59:01 -07:00 committed by Junio C Hamano
parent eb09626b94
commit 7faf068660

View File

@ -2472,12 +2472,16 @@ sub close_file {
my $hash;
my $path = $self->git_path($fb->{path});
if (my $fh = $fb->{fh}) {
if (defined $exp) {
seek($fh, 0, 0) or croak $!;
my $md5 = Digest::MD5->new;
$md5->addfile($fh);
my $got = $md5->hexdigest;
if ($got ne $exp) {
die "Checksum mismatch: $path\n",
"expected: $exp\n got: $got\n" if (defined $exp && $got ne $exp);
"expected: $exp\n got: $got\n";
}
}
sysseek($fh, 0, 0) or croak $!;
if ($fb->{mode_b} == 120000) {
sysread($fh, my $buf, 5) == 5 or croak $!;