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

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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 20b3d206acbbb042c7ad5f42d36ff8d036a538c5,
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
1 changed files with 10 additions and 6 deletions
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16
git-svn.perl
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@ -2472,12 +2472,16 @@ sub close_file {
my $hash;
my $path = $self->git_path($fb->{path});
if (my $fh = $fb->{fh}) {
seek($fh, 0, 0) or croak $!;
my $md5 = Digest::MD5->new;
$md5->addfile($fh);
my $got = $md5->hexdigest;
die "Checksum mismatch: $path\n",
"expected: $exp\n got: $got\n" if (defined $exp && $got ne $exp);
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: $got\n";
}
}
sysseek($fh, 0, 0) or croak $!;
if ($fb->{mode_b} == 120000) {
sysread($fh, my $buf, 5) == 5 or croak $!;