+ progress
+ "dgit: split brain (separate dgit view) may be needed (--quilt=$quilt_mode).";
+ # we look in the reflog of dgit-intern/quilt-cache
+ # we look for an entry whose message is the key for the cache lookup
+ my @cachekey = (qw(dgit), $our_version);
+ push @cachekey, $upstreamversion;
+ push @cachekey, $quilt_mode;
+ push @cachekey, $headref;
+
+ push @cachekey, hashfile('fake.dsc');
+
+ my $srcshash = Digest::SHA->new(256);
+ my %sfs = ( %INC, '$0(dgit)' => $0 );
+ foreach my $sfk (sort keys %sfs) {
+ next unless m/^\$0\b/ || m{^Debian/Dgit\b};
+ $srcshash->add($sfk," ");
+ $srcshash->add(hashfile($sfs{$sfk}));
+ $srcshash->add("\n");
+ }
+ push @cachekey, $srcshash->hexdigest();
+ $splitbrain_cachekey = "@cachekey";
+
+ my @cmd = (@git, qw(reflog), '--pretty=format:%H %gs',
+ $splitbraincache);
+ printdebug "splitbrain cachekey $splitbrain_cachekey\n";
+ debugcmd "|(probably)",@cmd;
+ my $child = open GC, "-|"; defined $child or die $!;
+ if (!$child) {
+ chdir '../../..' or die $!;
+ if (!stat ".git/logs/refs/$splitbraincache") {
+ $! == ENOENT or die $!;
+ printdebug ">(no reflog)\n";
+ exit 0;
+ }
+ exec @cmd; die $!;
+ }
+ while (<GC>) {
+ chomp;
+ printdebug ">| ", $_, "\n" if $debuglevel > 1;
+ next unless m/^(\w+) (\S.*\S)$/ && $2 eq $splitbrain_cachekey;
+
+ my $cachehit = $1;
+ quilt_fixup_mkwork($headref);
+ if ($cachehit ne $headref) {
+ progress "dgit view: found cached (commit id $cachehit)";
+ runcmd @git, qw(checkout -q -b dgit-view), $cachehit;
+ $split_brain = 1;
+ return ($cachehit, $splitbrain_cachekey);
+ }
+ progress "dgit view: found cached, no changes required";
+ return ($headref, $splitbrain_cachekey);
+ }
+ die $! if GC->error;
+ failedcmd unless close GC;
+
+ printdebug "splitbrain cache miss\n";
+ return (undef, $splitbrain_cachekey);
~ianmdlvl / dgit.git / blobdiff