Dgit.pm: Move parsecontrol etc. out of dgit

[dgit.git] / Debian / Dgit.pm

diff --git a/Debian/Dgit.pm b/Debian/Dgit.pm
index 5106f8517c4e08c26a67661c5e3fcbb17575cc5e..8f069f7575e64739be6d9a25237d2f0640f3dff6 100644 (file)
--- a/Debian/Dgit.pm
+++ b/Debian/Dgit.pm
@@ -66,6 +66,8 @@ BEGIN {
                       $negate_harmful_gitattrs
                      changedir git_slurp_config_src
                      gdr_ffq_prev_branchinfo
+                     parsecontrolfh parsecontrol parsechangelog
+                     getfield
                      playtree_setup);
     # implicitly uses $main::us
     %EXPORT_TAGS = ( policyflags => [qw(NOFFCHECK FRESHREPO NOCOMMITCHECK)],
@@ -554,6 +556,59 @@ sub gdr_ffq_prev_branchinfo ($) {
     return ('branch', undef, $symref, $ffq_prev, $gdrlast);
 }
 
+sub parsecontrolfh ($$;$) {
+    my ($fh, $desc, $allowsigned) = @_;
+    our $dpkgcontrolhash_noissigned;
+    my $c;
+    for (;;) {
+       my %opts = ('name' => $desc);
+       $opts{allow_pgp}= $allowsigned || !$dpkgcontrolhash_noissigned;
+       $c = Dpkg::Control::Hash->new(%opts);
+       $c->parse($fh,$desc) or die "parsing of $desc failed";
+       last if $allowsigned;
+       last if $dpkgcontrolhash_noissigned;
+       my $issigned= $c->get_option('is_pgp_signed');
+       if (!defined $issigned) {
+           $dpkgcontrolhash_noissigned= 1;
+           seek $fh, 0,0 or die "seek $desc: $!";
+       } elsif ($issigned) {
+           fail "control file $desc is (already) PGP-signed. ".
+               " Note that dgit push needs to modify the .dsc and then".
+               " do the signature itself";
+       } else {
+           last;
+       }
+    }
+    return $c;
+}
+
+sub parsecontrol {
+    my ($file, $desc, $allowsigned) = @_;
+    my $fh = new IO::Handle;
+    open $fh, '<', $file or die "$file: $!";
+    my $c = parsecontrolfh($fh,$desc,$allowsigned);
+    $fh->error and die $!;
+    close $fh;
+    return $c;
+}
+
+sub parsechangelog {
+    my $c = Dpkg::Control::Hash->new(name => 'parsed changelog');
+    my $p = new IO::Handle;
+    my @cmd = (qw(dpkg-parsechangelog), @_);
+    open $p, '-|', @cmd or die $!;
+    $c->parse($p);
+    $?=0; $!=0; close $p or failedcmd @cmd;
+    return $c;
+}
+
+sub getfield ($$) {
+    my ($dctrl,$field) = @_;
+    my $v = $dctrl->{$field};
+    return $v if defined $v;
+    fail "missing field $field in ".$dctrl->get_option('name');
+}
+
 # ========== playground handling ==========
 
 # terminology: