+sub parse_dsc_field ($$) {
+ my ($dsc, $what) = @_;
+ my $f;
+ foreach my $field (@ourdscfield) {
+ $f = $dsc->{$field};
+ last if defined $f;
+ }
+ if (!defined $f) {
+ progress "$what: NO git hash";
+ } elsif (($dsc_hash, $dsc_distro, $dsc_hint_tag, $dsc_hint_url)
+ = $f =~ m/^(\w+) ($distro_re) ($versiontag_re) (\S+)(?:\s|$)/) {
+ progress "$what: specified git info ($dsc_distro)";
+ $dsc_hint_tag = [ $dsc_hint_tag ];
+ } elsif ($f =~ m/^\w+\s*$/) {
+ $dsc_hash = $&;
+ $dsc_distro //= 'debian';
+ $dsc_hint_tag = [ debiantags +(getfield $dsc, 'Version'),
+ $dsc_distro ];
+ progress "$what: specified git hash";
+ } else {
+ fail "$what: invalid Dgit info";
+ }
+}
+
+sub resolve_dsc_field_commit ($$) {
+ my ($already_distro, $already_mapref) = @_;
+
+ return unless defined $dsc_hash;
+
+ my $rewritemapdata = git_cat_file $already_mapref.':map';
+ if (defined $rewritemapdata
+ && $rewritemapdata =~ m/^$dsc_hash(?:[ \t](\w+))/m) {
+ progress "server's git history rewrite map contains a relevant entry!";
+
+ $dsc_hash = $1;
+ if (defined $dsc_hash) {
+ progress "using rewritten git hash in place of .dsc value";
+ } else {
+ progress "server data says .dsc hash is to be disregarded";
+ }
+ }
+}
+