X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=dgit;h=920787457bd271b3aecef6d0eecb8c1f924d9200;hb=fe216b34e36c059be82c18cfe850c729e5c8df21;hp=6a351f9d05754d82fed10248de28766ef6493d3f;hpb=6a9372d21a3816e93c2096df650c15f2a1227d1d;p=dgit.git

diff --git a/dgit b/dgit
index 6a351f9d..92078745 100755
--- a/dgit
+++ b/dgit
@@ -175,7 +175,7 @@ our $keyid;
 autoflush STDOUT 1;
 
 our $supplementary_message = '';
-our $split_brain = 0;
+our $made_split_brain = 0;
 our $do_split_brain = 0;
 
 # Interactions between quilt mode and split brain
@@ -4489,7 +4489,6 @@ END
     push_parse_dsc($dscpath, $dscfn, $cversion);
 
     my $format = getfield $dsc, 'Format';
-    printdebug "format $format\n";
 
     my $symref = git_get_symref();
     my $actualhead = git_rev_parse('HEAD');
@@ -4515,9 +4514,6 @@ END
 
     if (madformat_wantfixup($format)) {
 	# user might have not used dgit build, so maybe do this now:
-	if (quiltmode_splitbrain()) {
-	    $do_split_brain = 1;
-	}
 	if ($do_split_brain) {
 	    changedir $playground;
 	    my $cachekey;
@@ -4535,7 +4531,7 @@ END
 	}
     }
     if ($do_split_brain) {
-	$split_brain = 1;
+	$made_split_brain = 1;
 	$dgithead = splitbrain_pseudomerge($clogp,
 					   $actualhead, $dgithead,
 					   $archive_hash);
@@ -4569,6 +4565,8 @@ END
 	}
     }
 
+    confess unless !!$made_split_brain == !!$do_split_brain;
+
     changedir $playground;
     progress f_ "checking that %s corresponds to HEAD", $dscfn;
     runcmd qw(dpkg-source -x --),
@@ -4582,7 +4580,7 @@ END
     my $r = system @diffcmd;
     if ($r) {
 	if ($r==256) {
-	    my $referent = $split_brain ? $dgithead : 'HEAD';
+	    my $referent = $made_split_brain ? $dgithead : 'HEAD';
 	    my $diffs = cmdoutput @git, qw(diff --stat), $tree, $dgithead;
 
 	    my @mode_changes;
@@ -4982,6 +4980,7 @@ sub prep_push () {
     parseopts();
     build_or_push_prep_early();
     pushing();
+    build_or_push_prep_modes();
     check_not_dirty();
     my $specsuite;
     if (@ARGV==0) {
@@ -5424,7 +5423,7 @@ sub quiltify_splitbrain ($$$$$$$) {
     local $ENV{GIT_AUTHOR_EMAIL} = $authline[1];
     local $ENV{GIT_AUTHOR_DATE} =  $authline[2];
 
-    die unless $do_split_brain;
+    confess unless $do_split_brain;
 
     my $fulldiffhint = sub {
 	my ($x,$y) = @_;
@@ -5812,21 +5811,47 @@ sub build_maybe_quilt_fixup () {
 
     check_for_vendor_patches();
 
-    $do_split_brain = 1 if quiltmode_splitbrain();
-
     my $clogp = parsechangelog();
     my $headref = git_rev_parse('HEAD');
     my $symref = git_get_symref();
+    my $upstreamversion = upstreamversion $version;
 
     prep_ud();
     changedir $playground;
 
-    my $upstreamversion = upstreamversion $version;
+    my $splitbrain_cachekey;
+
+    if ($do_split_brain) {
+	my $cachehit;
+	($cachehit, $splitbrain_cachekey) =
+	    quilt_check_splitbrain_cache($headref, $upstreamversion);
+	if ($cachehit) {
+	    changedir $maindir;
+	    return;
+	}
+    }
+
+    unpack_playtree_need_cd_work($headref);
+    if ($do_split_brain) {
+	runcmd @git, qw(checkout -q -b dgit-view);
+	# so long as work is not deleted, its current branch will
+	# remain dgit-view, rather than master, so subsequent calls to
+	#  unpack_playtree_need_cd_work
+	# will DTRT, resetting dgit-view.
+	confess if $made_split_brain;
+	$made_split_brain = 1;
+    }
+    chdir '..';
 
     if ($fopts->{'single-debian-patch'}) {
+	fail f_
+ "quilt mode %s does not make sense (or is not supported) with single-debian-patch",
+	    $quilt_mode
+	    if quiltmode_splitbrain();
 	quilt_fixup_singlepatch($clogp, $headref, $upstreamversion);
     } else {
-	quilt_fixup_multipatch($clogp, $headref, $upstreamversion);
+	quilt_fixup_multipatch($clogp, $headref, $upstreamversion,
+			      $splitbrain_cachekey);
     }
 
     changedir $maindir;
@@ -6040,7 +6065,7 @@ sub quilt_check_splitbrain_cache ($$) {
 	if ($cachehit ne $headref) {
 	    progress f_ "dgit view: found cached (%s)", $saved;
 	    runcmd @git, qw(checkout -q -b dgit-view), $cachehit;
-	    $split_brain = 1;
+	    $made_split_brain = 1;
 	    return ($cachehit, $splitbrain_cachekey);
 	}
 	progress __ "dgit view: found cached, no changes required";
@@ -6052,7 +6077,7 @@ sub quilt_check_splitbrain_cache ($$) {
 }
 
 sub quilt_fixup_multipatch ($$$) {
-    my ($clogp, $headref, $upstreamversion) = @_;
+    my ($clogp, $headref, $upstreamversion, $splitbrain_cachekey) = @_;
 
     progress f_ "examining quilt state (multiple patches, %s mode)",
 	        $quilt_mode;
@@ -6126,8 +6151,6 @@ sub quilt_fixup_multipatch ($$$) {
     # afterwards with dpkg-source --before-build.  That lets us save a
     # tree object corresponding to .origs.
 
-    my $splitbrain_cachekey;
-
     if ($quilt_mode eq 'linear'
 	&& branch_is_gdr($headref)) {
 	# This is much faster.  It also makes patches that gdr
@@ -6161,12 +6184,6 @@ sub quilt_fixup_multipatch ($$$) {
 	chdir '..';
     }
 
-    if ($do_split_brain) {
-	my $cachehit;
-	($cachehit, $splitbrain_cachekey) =
-	    quilt_check_splitbrain_cache($headref, $upstreamversion);
-	return if $cachehit;
-    }
     my $unapplied=quilt_fakedsc2unapplied($headref, $upstreamversion);
 
     ensuredir '.pc';
@@ -6262,11 +6279,6 @@ END
     push @failsuggestion, [ 'origs', __
  "Maybe orig tarball(s) are not identical to git representation?" ];
 
-    if ($do_split_brain) {
-	runcmd @git, qw(checkout -q -b dgit-view);
-	die if $split_brain;
-	$split_brain = 1;
-    }
     if (quiltmode_splitbrain()) {
 	quiltify_splitbrain($clogp, $unapplied, $headref, $oldtiptree,
                             $diffbits, \%editedignores,
@@ -6425,9 +6437,20 @@ sub build_or_push_prep_early () {
     $dscfn = dscfn($version);
 }
 
+sub build_or_push_prep_modes () {
+    my ($format,) = get_source_format();
+    printdebug "format $format, quilt mode $quilt_mode\n";
+    if (madformat_wantfixup($format) && quiltmode_splitbrain()) {
+	$do_split_brain = 1;
+    }
+    fail __ "dgit: --include-dirty is not supported in split view quilt mode"
+	if $do_split_brain && $includedirty;
+}
+
 sub build_prep_early () {
     build_or_push_prep_early();
     notpushing();
+    build_or_push_prep_modes();
     check_not_dirty();
 }
 
@@ -6738,7 +6761,7 @@ sub building_source_in_playtree {
     #
     # Note that if we are building a source package in split brain
     # mode we do not support including uncommitted changes, because
-    # that makes quilt fixup too hard.  I.e. ($split_brain && (dgit is
+    # that makes quilt fixup too hard.  I.e. ($made_split_brain && (dgit is
     # building a source package)) => !$includedirty
     return !$includedirty;
 }
@@ -6749,6 +6772,8 @@ sub build_source {
 	unlink "$buildproductsdir/$sourcechanges" or $!==ENOENT
 	    or fail f_ "remove %s: %s", $sourcechanges, $!;
     }
+    confess unless !!$made_split_brain == !!$do_split_brain;
+
     my @cmd = (@dpkgsource, qw(-b --));
     my $leafdir;
     if (building_source_in_playtree()) {
@@ -6757,9 +6782,9 @@ sub build_source {
         # If we are in split brain, there is already a playtree with
         # the thing we should package into a .dsc (thanks to quilt
         # fixup).  If not, make a playtree
-        prep_ud() unless $split_brain;
+        prep_ud() unless $made_split_brain;
         changedir $playground;
-        unless ($split_brain) {
+        unless ($made_split_brain) {
             my $upstreamversion = upstreamversion $version;
             unpack_playtree_linkorigs($upstreamversion, sub { });
             unpack_playtree_need_cd_work($headref);
@@ -7559,9 +7584,6 @@ sub parseopts_late_defaults () {
 	$$vr = $v;
     }
 
-    fail __ "dgit: --include-dirty is not supported in split view quilt mode"
-	if $split_brain && $includedirty;
-
     if (!defined $cleanmode) {
 	local $access_forpush;
 	$cleanmode = access_cfg('clean-mode-newer', 'RETURN-UNDEF');