our $us = qw(git-debrebase);
+our $wrecknoteprefix = 'refs/debrebase-wreckage';
+
$|=1;
sub badusage ($) {
die $@ if $@;
}
-sub fresh_workarea () {
- $workarea = fresh_playground "$playprefix/work";
+sub fresh_workarea (;$) {
+ my ($subdir) = @_;
+ $subdir //= 'work';
+ $workarea = fresh_playground "$playprefix/$subdir";
in_workarea sub { playtree_setup };
}
our @deferred_updates;
our @deferred_update_messages;
+sub merge_wreckage_cleaning ($) {
+ my ($updates) = @_;
+ git_for_each_ref("$wrecknoteprefix/*", sub {
+ my ($objid,$objtype,$fullrefname,$reftail) = @_;
+ push @$updates, "delete $fullrefname";
+ });
+}
+
sub all_snags_summarised () {
$snags_forced + $snags_tripped == $snags_summarised;
}
confess 'dangerous internal error' unless all_snags_summarised();
+ merge_wreckage_cleaning \@deferred_updates;
run_ref_updates_now $mrest, \@deferred_updates;
print $_, "\n" foreach @deferred_update_messages;
# our own patch identification algorithm?
# this is an alternative strategy
-sub merge_failed ($$) {
- my ($wrecknotes, $emsg) = @_;
+sub merge_failed ($$;@) {
+ my ($wrecknotes, $emsg, @xmsgs) = @_;
my @m;
push @m, "Merge resolution failed: $emsg";
+ push @m, @xmsgs;
+
+ changedir $maindir;
+
+ my @updates;
+ merge_wreckage_cleaning \@updates;
+ run_ref_updates_now "merge failed", \@updates;
+
+ @updates = ();
+ keys %$wrecknotes;
+ while (my ($k,$v) = each %$wrecknotes) {
+ push @updates, "create $wrecknoteprefix/$k $v";
+ }
+ run_ref_updates_now "merge failed", \@updates;
+ push @m, "Wreckage left in $wrecknoteprefix/*.";
push @m, "See git-debrebase(1) section FAILED MERGES for suggestions.";
- # ^ xxx this section does not yet exist
- fail join '', map { "$_\n" } @m;
+
+ # use finish rather than fail, in case we are within an eval
+ # (that can happen inside walk!)
+ print STDERR "\n";
+ print STDERR "$us: $_\n" foreach @m;
+ finish 15;
}
sub mwrecknote ($$$) {
$wrecknotes->{$reftail} = $commitish;
}
+sub merge_attempt_cmd {
+ my $wrecknotes = shift @_;
+ debugcmd '+', @_;
+ $!=0; $?=-1;
+ if (system @_) {
+ merge_failed $wrecknotes,
+ failedcmd_waitstatus(),
+ "failed command: @_";
+ }
+}
+
+sub merge_series_patchqueue_convert ($$$);
+
sub merge_series ($$$;@) {
my ($newbase, $wrecknotes, $base_q, @input_qs) = @_;
# $base_q{SeriesBase} $input_qs[]{SeriesBase}
# $prereq{<patch filename>}{<possible prereq} exists or not (later)
# $prereq{<patch filename>} exists or not (even later)
- my $result;
+ my $merged_pq;
my $mwrecknote = sub { &mwrecknote($wrecknotes, @_); };
- local $workarea = fresh_playground "$playprefix/merge";
+ my $attempt_cmd = sub { &merge_attempt_cmd($wrecknotes, @_); };
+
+ local $workarea;
+ fresh_workarea "merge";
my $seriesfile = "debian/patches/series";
in_workarea sub {
playtree_setup();
runcmd @git, qw(checkout -q -b merge);
printdebug "merge_series merging...\n";
my @mergecmd = (@git, qw(merge --quiet --no-edit), "p-1");
- debugcmd '+', @mergecmd;
- $!=0; $?=-1;
- if (system @mergecmd) {
- failedcmd @mergecmd;
- }
+
+ $attempt_cmd->(@mergecmd);
printdebug "merge_series merge ok, series...\n";
# We need to construct a new series file
runcmd @git, qw(add), $seriesfile;
runcmd @git, qw(commit --quiet -m), 'Merged patch queue form';
- $mwrecknote->('merged-patchqueue', git_rev_parse 'HEAD');
+ $merged_pq = git_rev_parse 'HEAD';
+ $mwrecknote->('merged-patchqueue', $merged_pq);
+ };
+ return merge_series_patchqueue_convert
+ $wrecknotes, $newbase, $merged_pq;
+}
+
+sub merge_series_patchqueue_convert ($$$) {
+ my ($wrecknotes, $newbase, $merged_pq) = @_;
+ my $result;
+ in_workarea sub {
+ playtree_setup();
printdebug "merge_series series gbp pq import\n";
- runcmd qw(gbp pq import);
+ runcmd @git, qw(checkout -q -b mergec), $merged_pq;
+
+ merge_attempt_cmd($wrecknotes, qw(gbp pq import));
# OK now we are on patch-queue/merge, and we need to rebase
# onto the intended parent and drop the patches from each one
printdebug "merge_series series ok, building...\n";
my $build = $newbase;
- my @lcmd = (@git, qw(rev-list --reverse merge..patch-queue/merge));
+ my @lcmd = (@git, qw(rev-list --reverse mergec..patch-queue/mergec));
foreach my $c (grep /./, split /\n/, cmdoutput @lcmd) {
my $commit = git_cat_file $c, 'commit';
printdebug "merge_series series ok, building $c\n";
$build = cmdoutput @git, qw(hash-object -w -t commit ../mcommit);
}
$result = $build;
- $mwrecknote->('merged-result', $result);
+ mwrecknote($wrecknotes, 'merged-result', $result);
runcmd @git, qw(update-ref refs/heads/result), $result;
runcmd @git, qw(commit --allow-empty -q -m M-WORKTREE);
my $mdebug = git_rev_parse 'HEAD';
printdebug sprintf "merge_series done debug=%s\n", $mdebug;
- $mwrecknote->('merged-debug', $mdebug);
+ mwrecknote($wrecknotes, 'merged-debug', $mdebug);
};
printdebug "merge_series returns $result\n";
return $result;
my ($btip, $bbw, $banchor) = eval {
walk $ib, 0, $report, $report_lprefix.' ';
};
- $nomerge->("walking interchange branch merge base ($ibleaf): ".
- $@) if length $@;
+ $nomerge->("walking interchange branch merge base ($ibleaf):\n".
+ $@)
+ if length $@;
$mwrecknote->("mergebase-laundered", $btip);
$mwrecknote->("mergebase-breakwater", $bbw);
@parents = map { $_->{Breakwater} } @{ $cl->{Parents} };
} elsif ($method eq 'MergeMergeSeries') {
print "Running merge resolution for $cl->{CommitId}...\n";
+ $mwrecknote->('new-base', $build);
$build = merge_series
$build, $cl->{MergeWreckNotes},
$cl->{MergeInterchangeBaseInfo},
'convert-from-dgit-view';
}
+sub cmd_record_resolved_merge () {
+ badusage "record-resolved-merge takes no further arguments" if @ARGV;
+ my $new = get_head();
+ my $method;
+
+ print "Checking how you have resolved the merge problem\n";
+ my $nope = sub { print "Not $method: @_"; 0; };
+
+ my $maybe = sub { print "Seems to be $method.\n"; };
+ my $yes = sub {
+ my ($key, $ref) = @_;
+ print "OK. You can switch branches and try git-debrebase again.\n";
+ confess "todo $ref"; # xxx
+ 1;
+ };
+
+ fresh_workarea 'merge';
+ sub {
+ $method = 'vanilla-merge patchqueue';
+ my $vanilla = git_get_ref "$wrecknoteprefix/vanilla-merge";
+ $vanilla or return $nope->("wreckage was not of vanilla-merge");
+ foreach my $lr (qw(left right)) {
+ my $n = "$wrecknoteprefix/$lr-patchqueue";
+ my $lrpq = git_get_ref $n;
+ $lrpq or return $nope->("wreckage did not contain patchqueues");
+ is_fast_fwd $lrpq, $new or return $nope->("HEAD not ff of $n");
+ }
+ $maybe->();
+ my $newbase = git_get_ref "$wrecknoteprefix/new-base"
+ or die "wreckage element $wrecknoteprefix/new-base missing";
+ my $result = merge_series_patchqueue_convert
+ {}, $newbase, $new;
+ $yes->("vanilla-merge $vanilla", $result);
+ 1;
+ }->() or sub {
+ fail "No resolved merge method seems applicable.\n";
+ }->();
+}
+
sub cmd_downstream_rebase_launder_v0 () {
badusage "needs 1 argument, the baseline" unless @ARGV==1;
my ($base) = @ARGV;
~ianmdlvl / dgit.git / blobdiff