X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=dgit.git;a=blobdiff_plain;f=git-debrebase;h=eb0acb21c0ab0df27204c1afdd04437ad8d83835;hp=13ca472d47881b34361a8c4dc160bc0113d0f47c;hb=5026d3c30a7046299179ca3ba422fb21505cdf4d;hpb=cd06cd0cf3b1190fde3862684a18a1d7d56a834e

diff --git a/git-debrebase b/git-debrebase
index 13ca472d..eb0acb21 100755
--- a/git-debrebase
+++ b/git-debrebase
@@ -36,6 +36,18 @@ use Dpkg::Version;
 use File::FnMatch qw(:fnmatch);
 use File::Copy;
 
+our ($usage_message) = <<'END';
+usages:
+  git-debrebase [<options>] [--|-i <git rebase options...>]
+  git-debrebase [<options>] status
+  git-debrebase [<options>] prepush [--prose=...]
+  git-debrebase [<options>] quick|conclude
+  git-debrebase [<options>] new-upstream <new-version> [<details ...>]
+  git-debrebase [<options>] convert-from-gbp [<upstream-commitish>]
+  ...
+See git-debrebase(1), git-debrebase(5), dgit-maint-debrebase(7) (in dgit).
+END
+
 our ($opt_force, $opt_noop_ok, @opt_anchors);
 our ($opt_defaultcmd_interactive);
 
@@ -49,11 +61,15 @@ sub badusage ($) {
     finish 8;
 }
 
-sub getoptions {
+sub getoptions_main {
     my $m = shift;
     local $SIG{__WARN__}; # GetOptions calls `warn' to print messages
     GetOptions @_ or badusage $m;
 }
+sub getoptions {
+    my $sc = shift;
+    getoptions_main "bad options follow \`git-debrebase $sc'", @_;
+}
 
 sub cfg ($;$) {
     my ($k, $optional) = @_;
@@ -579,6 +595,7 @@ sub keycommits ($;$$$$) {
     my ($anchor, $breakwater);
     my $clogonly;
     my $cl;
+    my $found_pm;
     $fatal //= sub { fail $_[1]; };
     my $x = sub {
 	my ($cb, $tagsfx, $mainwhy, $xwhy) = @_;
@@ -618,12 +635,20 @@ sub keycommits ($;$$$$) {
 	    $breakwater = undef;
 	} elsif ($ty eq 'Pseudomerge' or
 		 $ty eq 'AddPatches') {
+	    my $found_pm = 1;
 	    $x->($furniture, (lc $ty),
 		 "found interchange bureaucracy commit ($ty)"," ($head)");
 	} elsif ($ty eq 'DgitImportUnpatched') {
-	    $x->($trouble, 'dgitimport',
-		 "found dgit dsc import ($head)");
-	    return (undef,undef);
+	    if ($found_pm) {
+		$x->($trouble, 'dgitimport',
+		     "found dgit dsc import"," ($head)");
+		return (undef,undef);
+	    } else {
+		$x->($fatal, 'unprocessable',
+		     "found bare dgit dsc import with no prior history",
+		     " ($head)");
+		return (undef,undef);
+	    }
 	} else {
 	    $x->($fatal, 'unprocessable',
 		 "found unprocessable commit, cannot cope: $cl->{Why}",
@@ -685,8 +710,8 @@ sub walk ($;$$) {
 	if ($nogenerate) {
 	    return (undef,undef);
 	}
-	fail "found unprocessable commit, cannot cope:".
-	    (defined $cl->{Why} ? "; $cl->{Why}": '').
+	fail "found unprocessable commit, cannot cope".
+	    (defined $cl->{Why} ? "; $cl->{Why}:": ':').
 	    " (commit $cur) (d.".
 	    (join ' ', map { sprintf "%#x", $_->{Differs} }
 	     @{ $cl->{Parents} }).
@@ -798,13 +823,12 @@ sub walk ($;$$) {
 		next;
 	    } else {
 		# Everything is from this import.  This kind of import
-		# is already in valid breakwater format, with the
-		# patches as commits.
-		printf $report " NoPM" if $report;
-		# last thing we processed will have been the first patch,
-		# if there is one; which is fine, so no need to rewrite
-		# on account of this import
-		$build_start->("ImportOrigin", $cur);
+		# is already nearly in valid breakwater format, with the
+		# patches as commits.  Unfortunately it contains
+		# debian/patches/.
+		printdebug "*** WALK BOMB bare dgit import\n";
+		$cl->{Why} = "bare dgit dsc import";
+		return $bomb->();
 	    }
 	    die "$ty ?";
         } else {
@@ -1168,21 +1192,23 @@ sub do_stitch ($;$) {
     stitch($dangling_head, $ffq_prev, $gdrlast, $ffq_prev_commitish, $prose);
 }
 
-sub resolve_upstream_version ($$) {
-    my ($new_upstream, $version) = @_;
+sub upstream_commitish_search ($$) {
+    my ($upstream_version, $tried) = @_;
+    # todo: at some point maybe use git-deborig to do this
+    foreach my $tagpfx ('', 'v', 'upstream/') {
+	my $tag = $tagpfx.(dep14_version_mangle $upstream_version);
+	my $new_upstream = git_get_ref "refs/tags/$tag";
+	push @$tried, $tag;
+	return $new_upstream if length $new_upstream;
+    }
+}
 
-    my $new_upstream_version = "$version";
-    $new_upstream_version =~ s/-.*?$//;;
+sub resolve_upstream_version ($$) {
+    my ($new_upstream, $upstream_version) = @_;
 
     if (!defined $new_upstream) {
 	my @tried;
-	# todo: at some point maybe use git-deborig to do this
-	foreach my $tagpfx ('', 'v', 'upstream/') {
-	    my $tag = $tagpfx.(dep14_version_mangle $new_upstream_version);
-	    $new_upstream = git_get_ref "refs/tags/$tag";
-	    last if length $new_upstream;
-	    push @tried, $tag;
-	}
+	$new_upstream = upstream_commitish_search $upstream_version, \@tried;
 	if (!length $new_upstream) {
 	    fail "Could not determine appropriate upstream commitish.\n".
 		" (Tried these tags: @tried)\n".
@@ -1191,7 +1217,7 @@ sub resolve_upstream_version ($$) {
     }
     $new_upstream = git_rev_parse $new_upstream;
 
-    return ($new_upstream, $new_upstream_version);
+    return $new_upstream;
 }
 
 sub cmd_new_upstream () {
@@ -1211,9 +1237,9 @@ sub cmd_new_upstream () {
     }
 
     my $new_upstream = shift @ARGV;
-    my $new_upstream_version;
-    ($new_upstream, $new_upstream_version) =
-	resolve_upstream_version $new_upstream, $new_version;
+    my $new_upstream_version = upstreamversion  $new_version;
+    $new_upstream =
+	resolve_upstream_version $new_upstream, $new_upstream_version;
 
     record_ffq_auto();
 
@@ -1524,7 +1550,7 @@ sub cmd_status () {
 
 sub cmd_stitch () {
     my $prose = 'stitch';
-    getoptions("bad options follow \`git-debrebase stitch'",
+    getoptions("stitch",
 	       'prose=s', \$prose);
     badusage "no arguments allowed" if @ARGV;
     do_stitch $prose, 0;
@@ -1588,7 +1614,7 @@ sub make_patches ($) {
 
 sub cmd_make_patches () {
     my $opt_quiet_would_amend;
-    getoptions("bad options follow \`git-debrebase make-patches'",
+    getoptions("make-patches",
 	       'quiet-would-amend!', \$opt_quiet_would_amend);
     badusage "no arguments allowed" if @ARGV;
     my $old_head = get_head();
@@ -1620,8 +1646,9 @@ sub cmd_convert_from_gbp () {
 
     my ($upstream_spec) = @ARGV;
 
-    my ($upstream, $upstream_version) =
-	resolve_upstream_version($upstream_spec, $version);
+    my $upstream_version = upstreamversion $version;
+    my $upstream =
+	resolve_upstream_version($upstream_spec, $upstream_version);
 
     my $old_head = get_head();
 
@@ -1809,7 +1836,8 @@ sub cmd_downstream_rebase_launder_v0 () {
     }
 }
 
-getoptions("bad options\n",
+getoptions_main
+          ("bad options\n",
 	   "D+" => \$debuglevel,
 	   'noop-ok', => \$opt_noop_ok,
 	   'f=s' => \@snag_force_opts,
@@ -1826,7 +1854,9 @@ getoptions("bad options\n",
 	       # approach.  '-i=s{0,}' does not work with bundling.
 	       push @$opt_defaultcmd_interactive, @ARGV;
 	       @ARGV=();
-	   });
+	   },
+	   'help' => sub { print $usage_message or die $!; finish 0; },
+	   );
 
 initdebug('git-debrebase ');
 enabledebug if $debuglevel;