our $changes_since_version;
our $rmchanges;
our $quilt_mode;
-our $quilt_modes_re = 'linear|smash|auto|nofix|nocheck';
+our $quilt_modes_re = 'linear|smash|auto|nofix|nocheck|gbp|unapplied';
our $we_are_responder;
our $initiator_tempdir;
}
}
-sub quiltify_trees_differ ($$) {
- my ($x,$y) = @_;
- # returns 1 iff the two tree objects differ other than in debian/
+sub quiltify_trees_differ ($$;$) {
+ my ($x,$y,$finegrained) = @_;
+ # returns true iff the two tree objects differ other than in debian/
+ # with $finegrained,
+ # returns bitmask 01 - differ in upstream files except .gitignore
+ # 02 - differ in .gitignore
local $/=undef;
- my @cmd = (@git, qw(diff-tree --name-only -z), $x, $y);
+ my @cmd = (@git, qw(diff-tree --name-only -z));
+ push @cmd, qw(-r) if $finegrained;
+ push @cmd, $x, $y;
my $diffs= cmdoutput @cmd;
+ my $r = 0;
foreach my $f (split /\0/, $diffs) {
- next if $f eq 'debian';
- return 1;
+ next if $f =~ m#^debian(?:/.*)?$#s;
+ $r |= ($f =~ m#^(?:.*/)?.gitignore$#s) ? 02 : 01;
}
- return 0;
+ printdebug "quiltify_trees_differ $x $y => $r\n";
+ return $r;
}
sub quiltify_tree_sentinelfiles ($) {
return $r;
}
-sub quiltify ($$) {
- my ($clogp,$target) = @_;
+sub quiltify_splitbrain ($) {
+ my ($diffbits) = @_;
+ # memoisation via git-reflog
+ my $may_apply = $quilt_mode =~ m/gbp|unapplied/;
+ die "xxx not yet implemented";
+# if ($may_apply &&
+# quiltify_trees_differ($userhead,)) {}
+}
+
+sub quiltify ($$$$) {
+ my ($clogp,$target,$oldtiptree,$failsuggestion) = @_;
# Quilt patchification algorithm
#
# After traversing PT, we git commit the changes which
# should be contained within debian/patches.
- changedir '../fake';
- remove_stray_gits();
- mktree_in_ud_here();
- rmtree '.pc';
- runcmd @git, qw(add -Af .);
- my $oldtiptree=git_write_tree();
- changedir '../work';
-
# The search for the path S..T is breadth-first. We maintain a
# todo list containing search nodes. A search node identifies a
# commit, and looks something like this:
foreach my $notp (@nots) {
print STDERR "$us: ", $reportnot->($notp), "\n";
}
+ print STDERR "$us: $_\n" foreach @$failsuggestion;
fail "quilt fixup naive history linearisation failed.\n".
"Use dpkg-source --commit by hand; or, --quilt=smash for one ugly patch";
} elsif ($quilt_mode eq 'smash') {
# 5. If we had a .pc in-tree, delete it, and git-commit
# 6. Back in the main tree, fast forward to the new HEAD
+ # Another situation we may have to cope with is gbp-style
+ # patches-unapplied trees.
+ #
+ # We would want to detect these, so we know to escape into
+ # quilt_fixup_gbp. However, this is in general not possible.
+ # Consider a package with a one patch which the dgit user reverts
+ # (with git-revert or the moral equivalent).
+ #
+ # That is indistinguishable in contents from a patches-unapplied
+ # tree. And looking at the history to distinguish them is not
+ # useful because the user might have made a confusing-looking git
+ # history structure (which ought to produce an error if dgit can't
+ # cope, not a silent reintroduction of an unwanted patch).
+ #
+ # So gbp users will have to pass an option. But we can usually
+ # detect their failure to do so: if the tree is not a clean
+ # patches-applied tree, quilt linearisation fails, but the tree
+ # _is_ a clean patches-unapplied tree, we can suggest that maybe
+ # they want --quilt=unapplied.
+ #
+ # To help detect this, when we are extracting the fake dsc, we
+ # first extract it with --skip-patches, and then apply the patches
+ # afterwards with dpkg-source --before-build. That lets us save a
+ # tree object corresponding to .origs.
+
my $fakeversion="$upstreamversion-~~DGITFAKE";
my $fakedsc=new IO::File 'fake.dsc', '>' or die $!;
quilt_fixup_linkorigs($upstreamversion, $dscaddfile);
- my @files=qw(debian/source/format debian/rules);
- foreach my $maybe (qw(debian/patches debian/source/options)) {
+ my @files=qw(debian/source/format debian/rules
+ debian/control debian/changelog);
+ foreach my $maybe (qw(debian/patches debian/source/options
+ debian/tests/control)) {
next unless stat_exists "../../../$maybe";
push @files, $maybe;
}
$dscaddfile->($debtar);
close $fakedsc or die $!;
- runcmd qw(sh -ec), 'exec dpkg-source --no-check -x fake.dsc >/dev/null';
+ runcmd qw(sh -ec),
+ 'exec dpkg-source --no-check --skip-patches -x fake.dsc >/dev/null';
my $fakexdir= $package.'-'.(stripepoch $upstreamversion);
rename $fakexdir, "fake" or die "$fakexdir $!";
+ changedir 'fake';
+
+ remove_stray_gits();
+ mktree_in_ud_here();
+
+ rmtree '.pc';
+
+ runcmd @git, qw(add -Af .);
+ my $unapplied=git_write_tree();
+ printdebug "fake orig tree object $unapplied\n";
+
+ ensuredir '.pc';
+
+ runcmd qw(sh -ec),
+ 'exec dpkg-source --before-build . >/dev/null';
+
+ changedir '..';
+
quilt_fixup_mkwork($headref);
my $mustdeletepc=0;
rename '../fake/.pc','.pc' or die $!;
}
- quiltify($clogp,$headref);
+ changedir '../fake';
+ rmtree '.pc';
+ runcmd @git, qw(add -Af .);
+ my $oldtiptree=git_write_tree();
+ changedir '../work';
+
+
+ # We calculate some guesswork now about what kind of tree this might
+ # be. This is mostly for error reporting.
+
+ my $diffbits = {
+ # H = user's HEAD
+ # O = orig, without patches applied
+ # A = "applied", ie orig with H's debian/patches applied
+ H2O => quiltify_trees_differ($headref, $unapplied, 1),
+ H2A => quiltify_trees_differ($headref, $oldtiptree,1),
+ O2A => quiltify_trees_differ($unapplied,$oldtiptree,1),
+ };
+
+ my @dl;
+ foreach my $b (qw(01 02)) {
+ foreach my $v (qw(H2O O2A H2A)) {
+ push @dl, ($diffbits->{$v} & $b) ? '##' : '==';
+ }
+ }
+ printdebug "differences \@dl @dl.\n";
+
+ progress sprintf
+"$us: quilt differences: src: %s orig %s gitignores: %s orig %s\n".
+"$us: quilt differences: HEAD %s o+d/p HEAD %s o+d/p",
+ $dl[0], $dl[1], $dl[3], $dl[4],
+ $dl[2], $dl[5];
+
+ my @failsuggestion;
+ if (!($diffbits->{H2O} & $diffbits->{O2A})) {
+ push @failsuggestion, "This might be a patches-unapplied branch.";
+ } elsif (!($diffbits->{H2A} & $diffbits->{O2A})) {
+ push @failsuggestion, "This might be a patches-applied branch.";
+ }
+ push @failsuggestion, "Maybe you need to specify one of".
+ " --quilt=gbp --quilt=dpm --quilt=unapplied ?";
+
+ if ($quilt_mode =~ m/gbp|dpm|apply/) {
+ quiltify_splitbrain($diffbits);
+ return;
+ }
+
+ quiltify($clogp,$headref,$oldtiptree,\@failsuggestion);
if (!open P, '>>', ".pc/applied-patches") {
$!==&ENOENT or die $!;
~ianmdlvl / dgit.git / blobdiff