absurd git-apply fallback: defend against debian/patches/series being an unusual...

[dgit.git] / dgit

diff --git a/dgit b/dgit
index f821299f4d06e129de1be4ba6093fac50c867789..62feb30281dacd5c0f1bb28aa5d109a9f9141c5b 100755 (executable)
--- a/dgit
+++ b/dgit
@@ -74,7 +74,11 @@ our $tagformat_want;
 our $tagformat;
 our $tagformatfn;
 
-our %forceopts = map { $_=>0 } qw(unrepresentable);
+our %forceopts = map { $_=>0 }
+    qw(unrepresentable unsupported-source-format
+       dsc-changes-mismatch
+       import-gitapply-absurd
+       import-gitapply-no-absurd);
 
 our %format_ok = map { $_=>1 } ("1.0","3.0 (native)","3.0 (quilt)");
 
@@ -236,6 +240,14 @@ sub forceable_fail ($$) {
     print STDERR "warning: overriding problem due to --force:\n". $msg;
 }
 
+sub forceing ($) {
+    my ($forceoptsl) = @_;
+    my @got = grep { $forceopts{$_} } @$forceoptsl;
+    return 0 unless @got;
+    print STDERR
+ "warning: skipping checks or functionality due to --force-$got[0]\n";
+}
+
 sub no_such_package () {
     print STDERR "$us: package $package does not exist in suite $isuite\n";
     exit 4;
@@ -1308,7 +1320,9 @@ sub get_archive_dsc () {
        $dsc = parsecontrolfh($dscfh,$dscurl,1);
        printdebug Dumper($dsc) if $debuglevel>1;
        my $fmt = getfield $dsc, 'Format';
-       fail "unsupported source format $fmt, sorry" unless $format_ok{$fmt};
+       $format_ok{$fmt} or forceable_fail [qw(unsupported-source-format)],
+           "unsupported source format $fmt, sorry";
+           
        $dsc_checked = !!$digester;
        printdebug "get_archive_dsc: Version ".(getfield $dsc, 'Version')."\n";
        return;
@@ -1964,9 +1978,15 @@ END
                $path = "$absurdity:$path";
                progress "$us: trying slow absurd-git-apply...";
                rename "../../gbp-pq-output","../../gbp-pq-output.0"
+                   or $!==ENOENT
                    or die $!;
            }
            eval {
+               die "forbid absurd git-apply\n" if $use_absurd
+                   && forceing [qw(import-gitapply-no-absurd)];
+               die "only absurd git-apply!\n" if !$use_absurd
+                   && forceing [qw(import-gitapply-absurd)];
+
                local $ENV{PATH} = $path if $use_absurd;
 
                my @showcmd = (gbp_pq, qw(import));
@@ -3288,7 +3308,8 @@ END
 
     # Check that changes and .dsc agree enough
     $changesfile =~ m{[^/]*$};
-    files_compare_inputs($dsc, parsecontrol($changesfile,$&));
+    files_compare_inputs($dsc, parsecontrol($changesfile,$&))
+       unless forceing [qw(dsc-changes-mismatch)];
 
     # Checks complete, we're going to try and go ahead:
 
@@ -5217,6 +5238,10 @@ sub parseopts () {
                push @ropts, $&;
                $forceopts{$1} = 1;
                $_='';
+           } elsif (m/^--force-/) {
+               print STDERR
+                   "$us: warning: ignoring unknown force option $_\n";
+               $_='';
            } elsif (m/^--dgit-tag-format=(old|new)$/s) {
                # undocumented, for testing
                push @ropts, $_;