# along with this program. If not, see <http://www.gnu.org/licenses/>.
END { $? = $Debian::Dgit::ExitStatus::desired // -1; };
+use Debian::Dgit::GDR;
use Debian::Dgit::ExitStatus;
+use Debian::Dgit::I18n;
use strict;
use Memoize;
use Carp;
use POSIX;
+use Locale::gettext;
use Data::Dumper;
use Getopt::Long qw(:config posix_default gnu_compat bundling);
use Dpkg::Version;
use File::FnMatch qw(:fnmatch);
+use File::Copy;
+
+$debugcmd_when_debuglevel = 2;
+
+our ($usage_message) = i_ <<'END';
+usages:
+ git-debrebase [<options>] [--|-i <git rebase options...>]
+ git-debrebase [<options>] status
+ git-debrebase [<options>] prepush [--prose=...]
+ git-debrebase [<options>] quick|conclude
+ git-debrebase [<options>] new-upstream <new-version> [<details ...>]
+ git-debrebase [<options>] convert-from-gbp [<upstream-commitish>]
+ ...
+See git-debrebase(1), git-debrebase(5), dgit-maint-debrebase(7) (in dgit).
+END
-our ($opt_force, $opt_noop_ok, @opt_anchors);
+our ($opt_force, $opt_noop_ok, $opt_merges, @opt_anchors);
our ($opt_defaultcmd_interactive);
our $us = qw(git-debrebase);
+our $wrecknoteprefix = 'refs/debrebase/wreckage';
+our $merge_cache_ref = 'refs/debrebase/merge-resolutions';
+
+$|=1;
+
sub badusage ($) {
my ($m) = @_;
- print STDERR "bad usage: $m\n";
+ print STDERR f_ "%s: bad usage: %s\n", $us, $m;
finish 8;
}
+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 +(f_ "bad options follow \`git-debrebase %s'", $sc), @_;
+}
+
sub cfg ($;$) {
my ($k, $optional) = @_;
local $/ = "\0";
push @cmd, $k;
my $out = cmdoutput_errok @cmd;
if (!defined $out) {
- fail "missing required git config $k" unless $optional;
+ fail f_ "missing required git config %s", $k unless $optional;
return ();
}
my @l = split /\0/, $out;
sub get_commit ($) {
my ($objid) = @_;
my $data = (git_cat_file $objid, 'commit');
- $data =~ m/(?<=\n)\n/ or die "$objid ($data) ?";
+ $data =~ m/(?<=\n)\n/ or confess "$objid ($data) ?";
return ($`,$');
}
sub D_UPS () { 0x02; } # upstream files
sub D_PAT_ADD () { 0x04; } # debian/patches/ extra patches at end
sub D_PAT_OTH () { 0x08; } # debian/patches other changes
-sub D_DEB_CLOG () { 0x10; } # debian/ (not patches/ or changelog)
-sub D_DEB_OTH () { 0x20; } # debian/changelog
+sub D_DEB_CLOG () { 0x10; } # debian/changelog
+sub D_DEB_OTH () { 0x20; } # debian/ (not patches/ or changelog)
sub DS_DEB () { D_DEB_CLOG | D_DEB_OTH; } # debian/ (not patches/)
our $playprefix = 'debrebase';
our $workarea;
our @git = qw(git);
+our @dgit = qw(dgit);
sub in_workarea ($) {
my ($sub) = @_;
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 };
}
+sub run_ref_updates_now ($$) {
+ my ($mrest, $updates) = @_;
+ # @$updates is a list of lines for git-update-ref, without \ns
+
+ my @upd_cmd = (git_update_ref_cmd "debrebase: $mrest", qw(--stdin));
+ debugcmd '>|', @upd_cmd;
+ open U, "|-", @upd_cmd or confess $!;
+ foreach (@$updates) {
+ printdebug ">= ", $_, "\n";
+ print U $_, "\n" or confess $!;
+ }
+ printdebug ">\$\n";
+ close U or failedcmd @upd_cmd;
+}
+
our $snags_forced = 0;
our $snags_tripped = 0;
our $snags_summarised = 0;
our @deferred_updates;
our @deferred_update_messages;
+sub merge_wreckage_cleaning ($) {
+ my ($updates) = @_;
+ git_for_each_ref("$wrecknoteprefix/*", sub {
+ my ($objid,$objtype,$fullrefname,$reftail) = @_;
+ push @$updates, "delete $fullrefname";
+ });
+}
+
sub all_snags_summarised () {
$snags_forced + $snags_tripped == $snags_summarised;
}
sub run_deferred_updates ($) {
my ($mrest) = @_;
- confess 'dangerous internal error' unless all_snags_summarised();
-
- my @upd_cmd = (@git, qw(update-ref --stdin -m), "debrebase: $mrest");
- debugcmd '>|', @upd_cmd;
- open U, "|-", @upd_cmd or die $!;
- foreach (@deferred_updates) {
- printdebug ">= ", $_, "\n";
- print U $_, "\n" or die $!;
- }
- printdebug ">\$\n";
- close U or failedcmd @upd_cmd;
+ my $m = 'dangerous internal error';
+ confess $m.' - '.__ $m unless all_snags_summarised();
+ merge_wreckage_cleaning \@deferred_updates;
+ run_ref_updates_now $mrest, \@deferred_updates;
print $_, "\n" foreach @deferred_update_messages;
@deferred_updates = ();
@deferred_update_messages = ();
}
+sub get_tree ($;$$) {
+ # tree object name => ([ $name, $info ], ...)
+ # where $name is the sort key, ie has / at end for subtrees
+ # $info is the LHS from git-ls-tree (<mode> <type> <hash>)
+ # without $precheck, will crash if $x does not exist, so don't do that;
+ # instead pass '' to get ().
+ my ($x, $precheck, $recurse) = @_;
+
+ return () if !length $x;
+
+ if ($precheck) {
+ my ($type, $dummy) = git_cat_file $x, [qw(tree missing)];
+ return () if $type eq 'missing';
+ }
+
+ $recurse = !!$recurse;
+
+ confess "get_tree needs object not $x ?" unless $x =~ m{^[0-9a-f]+\:};
+
+ our (@get_tree_memo, %get_tree_memo);
+ my $memo = $get_tree_memo{$recurse,$x};
+ return @$memo if $memo;
+
+ local $Debian::Dgit::debugcmd_when_debuglevel = 3;
+ my @l;
+ my @cmd = (qw(git ls-tree -z --full-tree));
+ push @cmd, qw(-r) if $recurse;
+ push @cmd, qw(--), $x;
+ my $o = cmdoutput @cmd;
+ $o =~ s/\0$//s;
+ my $last = '';
+ foreach my $l (split /\0/, $o) {
+ my ($i, $n) = split /\t/, $l, 2;
+ $n .= '/' if $i =~ m/^\d+ tree /;
+ push @l, [ $n, $i ];
+ confess "$x need $last < $n ?" unless $last lt $n;
+ }
+ $get_tree_memo{$recurse,$x} = \@l;
+ push @get_tree_memo, $x;
+ if (@get_tree_memo > 10) {
+ delete $get_tree_memo{ shift @get_tree_memo };
+ }
+ return @l;
+}
+
+sub trees_diff_walk ($$$;$) {
+ # trees_diff_walk [{..opts...},] $x, $y, sub {... }
+ # calls sub->($name, $ix, $iy) for each difference
+ # $x and $y are as for get_tree
+ # where $name, $ix, $iy are $name and $info from get_tree
+ # opts are all call even for names same in both
+ # recurse call even for names same in both
+ my $opts = shift @_ if @_>=4;
+ my ($x,$y,$call) = @_;
+ my $all = $opts->{all};
+ return if !$all and $x eq $y;
+ my @x = get_tree $x, 0, $opts->{recurse};
+ my @y = get_tree $y, 0, $opts->{recurse};
+ printdebug "trees_diff_walk(..$x,$y..) ".Dumper(\@x,\@y)
+ if $debuglevel >= 3;
+ while (@x || @y) {
+ my $cmp = !@x <=> !@y # eg @y empty? $cmp=-1, use x
+ || $x[0][0] cmp $y[0][0]; # eg, x lt y ? $cmp=-1, use x
+ my ($n, $ix, $iy); # all same? $cmp=0, use both
+ $ix=$iy='';
+ printdebug "trees_diff_walk $cmp : @{ $x[0]//[] } | @{ $y[0]//[] }\n"
+ if $debuglevel >= 3;
+ ($n, $ix) = @{ shift @x } if $cmp <= 0;
+ ($n, $iy) = @{ shift @y } if $cmp >= 0;
+ next if !$all and $ix eq $iy;
+ printdebug sprintf
+ "trees_diff_walk(%d,'%s','%s') call('%s','%s','%s')\n",
+ !!$all,$x,$y, $n,$ix,$iy
+ if $debuglevel >= 2;
+ $call->($n, $ix, $iy);
+ }
+}
+
sub get_differs ($$) {
my ($x,$y) = @_;
- # This resembles quiltify_trees_differ, in dgit, a bit.
+ # This does a similar job to quiltify_trees_differ, in dgit, a bit.
# But we don't care about modes, or dpkg-source-unrepresentable
# changes, and we don't need the plethora of different modes.
# Conversely we need to distinguish different kinds of changes to
# debian/ and debian/patches/.
+ # Also, here we have, and want to use, trees_diff_walk, because
+ # we may be calling this an awful lot and we want it to be fast.
my $differs = 0;
+ my @debian_info;
- my $rundiff = sub {
- my ($opts, $limits, $fn) = @_;
- my @cmd = (@git, qw(diff-tree -z --no-renames));
- push @cmd, @$opts;
- push @cmd, "$_:" foreach $x, $y;
- push @cmd, '--', @$limits;
- my $diffs = cmdoutput @cmd;
- foreach (split /\0/, $diffs) { $fn->(); }
- };
+ no warnings qw(exiting);
- $rundiff->([qw(--name-only)], [], sub {
- $differs |= $_ eq 'debian' ? DS_DEB : D_UPS;
- });
+ my $plain = sub { $_[0] =~ m{^(100|0*)644 blob }s; };
- if ($differs & DS_DEB) {
- $differs &= ~DS_DEB;
- $rundiff->([qw(--name-only -r)], [qw(debian)], sub {
- $differs |=
- m{^debian/patches/} ? D_PAT_OTH :
- $_ eq 'debian/changelog' ? D_DEB_CLOG :
- D_DEB_OTH;
- });
- die "mysterious debian changes $x..$y"
- unless $differs & (D_PAT_OTH|DS_DEB);
- }
-
- if ($differs & D_PAT_OTH) {
- my $mode;
- $differs &= ~D_PAT_OTH;
- my $pat_oth = sub {
- $differs |= D_PAT_OTH;
- no warnings qw(exiting); last;
- };
- $rundiff->([qw(--name-status -r)], [qw(debian/patches/)], sub {
- no warnings qw(exiting);
- if (!defined $mode) {
- $mode = $_; next;
+ trees_diff_walk "$x:", "$y:", sub {
+ my ($n,$ix,$iy) = @_;
+
+ # analyse difference at the toplevel
+
+ if ($n ne 'debian/') {
+ $differs |= D_UPS;
+ next;
+ }
+ if ($n eq 'debian') {
+ # one side has a non-tree for ./debian !
+ $differs |= D_DEB_OTH;
+ next;
+ }
+
+ my $xd = $ix && "$x:debian";
+ my $yd = $iy && "$y:debian";
+ trees_diff_walk $xd, $yd, sub {
+ my ($n,$ix,$iy) = @_;
+
+ # analyse difference in debian/
+
+ if ($n eq 'changelog' && (!$ix || $plain->($ix))
+ && $plain->($iy) ) {
+ $differs |= D_DEB_CLOG;
+ next;
}
- die unless s{^debian/patches/}{};
- my $ok;
- if ($mode eq 'A' && !m/\.series$/s) {
- $ok = 1;
- } elsif ($mode eq 'M' && $_ eq 'series') {
- my $x_s = (git_cat_file "$x:debian/patches/series", 'blob');
- my $y_s = (git_cat_file "$y:debian/patches/series", 'blob');
- chomp $x_s; $x_s .= "\n";
- $ok = $x_s eq substr($y_s, 0, length $x_s);
- } else {
- # nope
+ if ($n ne 'patches/') {
+ $differs |= D_DEB_OTH;
+ next;
}
- $mode = undef;
- $differs |= $ok ? D_PAT_ADD : D_PAT_OTH;
- });
- die "mysterious debian/patches changes $x..$y"
- unless $differs & (D_PAT_ADD|D_PAT_OTH);
- }
- printdebug sprintf "get_differs %s, %s = %#x\n", $x, $y, $differs;
+ my $xp = $ix && "$xd/patches";
+ my $yp = $iy && "$yd/patches";
+ trees_diff_walk { recurse=>1 }, $xp, $yp, sub {
+ my ($n,$ix,$iy) = @_;
+
+ # analyse difference in debian/patches
+
+ my $ok;
+ if ($n =~ m{/$}s) {
+ # we are recursing; directories may appear and disappear
+ $ok = 1;
+ } elsif ($n !~ m/\.series$/s && !$ix && $plain->($iy)) {
+ $ok = 1;
+ } elsif ($n eq 'series' && $plain->($ix) && $plain->($iy)) {
+ my $x_s = (git_cat_file "$xp/series", 'blob');
+ my $y_s = (git_cat_file "$yp/series", 'blob');
+ chomp $x_s; $x_s .= "\n";
+ $ok = $x_s eq substr($y_s, 0, length $x_s);
+ } else {
+ # nope
+ }
+ $differs |= $ok ? D_PAT_ADD : D_PAT_OTH;
+ };
+ };
+ };
+
+ printdebug sprintf "get_differs %s %s = %#x\n", $x, $y, $differs;
return $differs;
}
runcmd @git, qw(read-tree), "--prefix=$subdir/", $new_tree_object;
}
+sub read_tree_debian ($) {
+ my ($treeish) = @_;
+ read_tree_subdir 'debian', "$treeish:debian";
+ rm_subdir_cached 'debian/patches';
+}
+
+sub read_tree_upstream ($;$$) {
+ my ($treeish, $keep_patches, $tree_with_debian) = @_;
+ # if $tree_with_debian is supplied, will use that for debian/
+ # otherwise will save and restore it.
+ my $debian =
+ $tree_with_debian ? "$tree_with_debian:debian"
+ : cmdoutput @git, qw(write-tree --prefix=debian/);
+ runcmd @git, qw(read-tree), $treeish;
+ read_tree_subdir 'debian', $debian;
+ rm_subdir_cached 'debian/patches' unless $keep_patches;
+};
+
sub make_commit ($$) {
my ($parents, $message_paras) = @_;
my $tree = cmdoutput @git, qw(write-tree);
my ($tag,$msg) = @_; # ignores extra args, for benefit of keycommits
if (grep { $_ eq $tag } @snag_force_opts) {
$snags_forced++;
- print STDERR "git-debrebase: snag ignored (-f$tag): $msg\n";
+ print STDERR f_ "%s: snag ignored (-f%s): %s\n", $us, $tag, $msg;
} else {
$snags_tripped++;
- print STDERR "git-debrebase: snag detected (-f$tag): $msg\n";
+ print STDERR f_ "%s: snag detected (-f%s): %s\n", $us, $tag, $msg;
}
}
sub snags_maybe_bail () {
return if all_snags_summarised();
if ($snags_forced) {
- printf STDERR
+ print STDERR f_
"%s: snags: %d overriden by individual -f options\n",
$us, $snags_forced;
}
if ($snags_tripped) {
if ($opt_force) {
- printf STDERR
+ print STDERR f_
"%s: snags: %d overriden by global --force\n",
$us, $snags_tripped;
} else {
- fail sprintf
- "%s: snags: %d blockers (you could -f<tag>, or --force)",
+ fail f_
+ "%s: snags: %d blocker(s) (you could -f<tag>, or --force)",
$us, $snags_tripped;
}
}
$snags_summarised = $snags_forced + $snags_tripped;
}
+sub snags_maybe_bail_early () {
+ # useful to bail out early without doing a lot of work;
+ # not a substitute for snags_maybe_bail.
+ snags_maybe_bail() if $snags_tripped && !$opt_force;
+}
sub any_snags () {
return $snags_forced || $snags_tripped;
}
+sub ffq_prev_branchinfo () {
+ my $current = git_get_symref();
+ return gdr_ffq_prev_branchinfo($current);
+}
+
+sub record_gdrlast ($$;$) {
+ my ($gdrlast, $newvalue, $oldvalue) = @_;
+ $oldvalue ||= $git_null_obj;
+ push @deferred_updates, "update $gdrlast $newvalue $oldvalue";
+}
+
+sub fail_unprocessable ($) {
+ my ($msg) = @_;
+ changedir $maindir;
+ my ($ffqs, $ffqm, $symref, $ffq_prev, $gdrlast) = ffq_prev_branchinfo();
+
+ my $mangled = __ <<END;
+Branch/history seems mangled - no longer in gdr format.
+See ILLEGAL OPERATIONS in git-debrebase(5).
+END
+ chomp $mangled;
+
+ if (defined $ffqm) {
+ fail f_ <<END, $msg, $ffqm;
+%s
+Is this meant to be a gdr branch? %s
+END
+ } elsif (git_get_ref $ffq_prev) {
+ fail f_ <<END, $msg, $mangled;
+%s
+%s
+Consider git-debrebase scrap, to throw away your recent work.
+END
+ } elsif (!git_get_ref $gdrlast) {
+ fail f_ <<END, $msg;
+%s
+Branch does not seem to be meant to be a git-debrebase branch?
+Wrong branch, or maybe you needed git-debrebase convert-from-*.
+END
+ } elsif (is_fast_fwd $gdrlast, git_rev_parse 'HEAD') {
+ fail <<END;
+$msg
+$mangled
+END
+ } else {
+ fail f_ <<END, $msg;
+%s
+Branch/history mangled, and diverged since last git-debrebase.
+Maybe you reset to, or rebased from, somewhere inappropriate.
+END
+ }
+};
+
+sub gbp_pq_export ($$$) {
+ my ($bname, $base, $tip) = @_;
+ # must be run in a workarea. $bname and patch-queue/$bname
+ # ought not to exist. Leaves you on patch-queue/$bname with
+ # the patches staged but not committed.
+ # returns 1 if there were any patches
+ printdebug "gbp_pq_export $bname $base $tip\n";
+ runcmd @git, qw(checkout -q -b), $bname, $base;
+ runcmd @git, qw(checkout -q -b), "patch-queue/$bname", $tip;
+ my @gbp_cmd = (qw(gbp pq export));
+ my $r = system shell_cmd 'exec >../gbp-pq-err 2>&1', @gbp_cmd;
+ if ($r) {
+ { local ($!,$?); copy('../gbp-pq-err', \*STDERR); }
+ failedcmd @gbp_cmd;
+ }
+ return 0 unless stat_exists 'debian/patches';
+ runcmd @git, qw(add -f debian/patches);
+ return 1;
+}
+
+
+# MERGE-TODO allow merge resolution separately from laundering, before git merge
+
+# later/rework?
+# use git-format-patch?
+# our own patch identification algorithm?
+# this is an alternative strategy
+
+sub merge_failed ($$;@) {
+ my ($wrecknotes, $emsg, @xmsgs) = @_;
+ my @m;
+ push @m, "Merge resolution failed: $emsg";
+ push @m, @xmsgs;
+
+ changedir $maindir;
+
+ my @updates;
+ merge_wreckage_cleaning \@updates;
+ run_ref_updates_now "merge failed", \@updates;
+
+ @updates = ();
+ keys %$wrecknotes;
+ while (my ($k,$v) = each %$wrecknotes) {
+ push @updates, "create $wrecknoteprefix/$k $v";
+ }
+ run_ref_updates_now "merge failed", \@updates;
+ push @m, "Wreckage left in $wrecknoteprefix/*.";
+
+ push @m, "See git-debrebase(1) section FAILED MERGES for suggestions.";
+
+ # use finish rather than fail, in case we are within an eval
+ # (that can happen inside walk!)
+ print STDERR "\n";
+ print STDERR "$us: $_\n" foreach @m;
+ finish 15;
+}
+
+sub mwrecknote ($$$) {
+ my ($wrecknotes, $reftail, $commitish) = @_;
+ confess unless defined $commitish;
+ printdebug "mwrecknote $reftail $commitish\n";
+ $wrecknotes->{$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}
+ # $base_q{SeriesTip} $input_qs[]{SeriesTip}
+ # ^ specifies several patch series (currently we only support exactly 2)
+ # return value is a commit which is the result of
+ # merging the two versions of the same topic branch
+ # $input_q[0] and $input_q[1]
+ # with respect to the old version
+ # $base_q
+ # all onto $newbase.
+
+ # Creates, in *_q, a key MR for its private use
+
+ printdebug "merge_series newbase=$newbase\n";
+
+ $input_qs[$_]{MR}{S} = $_ foreach (0..$#input_qs);
+ $base_q->{MR}{S} = 'base';
+
+ my %prereq;
+ # $prereq{<patch filename>}{<possible prereq}{<S>} = 1 or absent
+ # $prereq{<patch filename>}{<possible prereq} exists or not (later)
+ # $prereq{<patch filename>} exists or not (even later)
+
+ my $merged_pq;
+
+ my $mwrecknote = sub { &mwrecknote($wrecknotes, @_); };
+
+ my $attempt_cmd = sub { &merge_attempt_cmd($wrecknotes, @_); };
+
+ local $workarea;
+ fresh_workarea "merge";
+ my $seriesfile = "debian/patches/series";
+ in_workarea sub {
+ playtree_setup();
+ foreach my $q ($base_q, reverse @input_qs) {
+ my $s = $q->{MR}{S};
+ my $any = gbp_pq_export "p-$s", $q->{SeriesBase}, $q->{SeriesTip};
+ my @earlier;
+ if ($any) {
+ open S, $seriesfile or confess "$seriesfile $!";
+ while (my $patch = <S>) {
+ chomp $patch or confess $!;
+ $prereq{$patch} //= {};
+ foreach my $earlier (@earlier) {
+ $prereq{$patch}{$earlier}{$s}++ and confess;
+ }
+ push @earlier, $patch;
+ stat "debian/patches/$patch" or confess "$patch ?";
+ }
+ S->error and confess "$seriesfile $!";
+ close S;
+ }
+ read_tree_upstream $newbase, 1;
+ my $pec = make_commit [ grep { defined } $base_q->{MR}{PEC} ], [
+ "Convert $s to patch queue for merging",
+ "[git-debrebase merge-innards patch-queue import:".
+ " $q->{SeriesTip}]"
+ ];
+ printdebug "merge_series pec $pec ";
+ runcmd @git, qw(rm -q --ignore-unmatch --cached), $seriesfile;
+ $pec = make_commit [ $pec ], [
+ "Drop series file from $s to avoid merge trouble",
+ "[git-debrebase merge-innards patch-queue prep:".
+ " $q->{SeriesTip}]"
+ ];
+
+ read_tree_debian $newbase;
+ if (@earlier) {
+ read_tree_subdir 'debian/patches', "$pec:debian/patches";
+ } else {
+ rm_subdir_cached 'debian/patches';
+ }
+ $pec = make_commit [ $pec ], [
+ "Update debian/ (excluding patches) to final to avoid re-merging",
+ "debian/ was already merged and we need to just take that.",
+ "[git-debrebase merge-innards patch-queue packaging:".
+ " $q->{SeriesTip}]"
+ ];
+
+ printdebug "pec' $pec\n";
+ runcmd @git, qw(reset -q --hard), $pec;
+ $q->{MR}{PEC} = $pec;
+ $mwrecknote->("$q->{LeftRight}-patchqueue", $pec);
+ }
+ # now, because of reverse, we are on $input_q->{MR}{OQC}
+ runcmd @git, qw(checkout -q -b merge);
+ printdebug "merge_series merging...\n";
+ my @mergecmd = (@git, qw(merge --quiet --no-edit), "p-1");
+
+ $attempt_cmd->(@mergecmd);
+
+ printdebug "merge_series merge ok, series...\n";
+ # We need to construct a new series file
+ # Firstly, resolve prereq
+ foreach my $f (sort keys %prereq) {
+ printdebug "merge_series patch\t$f\t";
+ if (!stat_exists "debian/patches/$f") {
+ print DEBUG " drop\n" if $debuglevel;
+ # git merge deleted it; that's how we tell it's not wanted
+ delete $prereq{$f};
+ next;
+ }
+ print DEBUG " keep\n" if $debuglevel;
+ foreach my $g (sort keys %{ $prereq{$f} }) {
+ my $gfp = $prereq{$f}{$g};
+ printdebug "merge_series prereq\t$f\t-> $g\t";
+ if (!!$gfp->{0} == !!$gfp->{1}
+ ? $gfp->{0}
+ : !$gfp->{base}) {
+ print DEBUG "\tkeep\n" if $debuglevel;
+ } else {
+ print DEBUG "\tdrop\n" if $debuglevel;
+ delete $prereq{$f}{$g};
+ }
+ }
+ }
+
+ my $unsat = sub {
+ my ($f) = @_;
+ return scalar keys %{ $prereq{$f} };
+ };
+
+ my $nodate = time + 1;
+ my %authordate;
+ # $authordate{<patch filename>};
+ my $authordate = sub {
+ my ($f) = @_;
+ $authordate{$f} //= do {
+ open PF, "<", "debian/patches/$f" or confess "$f $!";
+ while (<PF>) {
+ return $nodate if m/^$/;
+ last if s{^Date: }{};
+ }
+ chomp;
+ return cmdoutput qw(date +%s -d), $_;
+ };
+ };
+
+ open NS, '>', $seriesfile or confess $!;
+
+ while (keys %prereq) {
+ my $best;
+ foreach my $try (sort keys %prereq) {
+ if ($best) {
+ next if (
+ $unsat->($try) <=> $unsat->($best) or
+ $authordate->($try) <=> $authordate->($best) or
+ $try cmp $best
+ ) >= 0;
+ }
+ $best = $try;
+ }
+ printdebug "merge_series series next $best\n";
+ print NS "$best\n" or confess $!;
+ delete $prereq{$best};
+ foreach my $gp (values %prereq) {
+ delete $gp->{$best};
+ }
+ }
+
+ runcmd @git, qw(add), $seriesfile;
+ runcmd @git, qw(commit --quiet -m), 'Merged patch queue form';
+ $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 @git, qw(checkout -q -b mergec), $merged_pq;
+
+ merge_attempt_cmd($wrecknotes, qw(gbp pq import));
+ # MERGE-TODO consider git-format-patch etc. instead,
+ # since gbp pq doesn't always round-trip :-/
+
+ # 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 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";
+ read_tree_upstream $c, 0, $newbase;
+ my $tree = cmdoutput @git, qw(write-tree);
+ $commit =~ s{^parent (\S+)$}{parent $build}m or confess;
+ $commit =~ s{^tree (\S+)$}{tree $tree}m or confess;
+ open C, ">", "../mcommit" or confess $!;
+ print C $commit or confess $!;
+ close C or confess $!;
+ $build = cmdoutput @git, qw(hash-object -w -t commit ../mcommit);
+ }
+ $result = $build;
+ mwrecknote($wrecknotes, 'merged-result', $result);
+
+ runcmd @git, qw(update-ref refs/heads/result), $result;
+
+ runcmd @git, qw(checkout -q -b debug);
+ runcmd @git, qw(commit --allow-empty -q -m M-INDEX);
+ runcmd @git, qw(add .);
+ runcmd @git, qw(commit --allow-empty -q -m M-WORKTREE);
+ my $mdebug = git_rev_parse 'HEAD';
+ printdebug sprintf "merge_series done debug=%s\n", $mdebug;
+ mwrecknote($wrecknotes, 'merged-debug', $mdebug);
+ };
+ printdebug "merge_series returns $result\n";
+ return $result;
+}
+
# classify returns an info hash like this
# CommitId => $objid
# Hdr => # commit headers, including 1 final newline
# $p_ref, if provided, must be [] and is used as a base for Parents
$p_ref //= [];
- die if @$p_ref;
+ confess if @$p_ref;
my ($h,$m) = get_commit $objid;
- my ($t) = $h =~ m/^tree (\w+)$/m or die $objid;
+ my ($t) = $h =~ m/^tree (\w+)$/m or confess $objid;
my (@ph) = $h =~ m/^parent (\w+)$/mg;
my $r = {
# reject it here then we avoid making the pseudomerge which
# would be needed to push it.
- my $badanchor = sub { $unknown->("git-debrebase \`anchor' but @_"); };
- @p == 2 or return $badanchor->("has other than two parents");
- $haspatches and return $badanchor->("contains debian/patches");
+ my $badanchor = sub {
+ $unknown->(f_ "git-debrebase \`anchor' but %s", "@_");
+ };
+ @p == 2 or return $badanchor->(__ "has other than two parents");
+ $haspatches and return $badanchor->(__ "contains debian/patches");
# How to decide about l/r ordering of anchors ? git
# --topo-order prefers to expand 2nd parent first. There's
# parents from left to right, in order, so it's easy to see
# which way round a pseudomerge is.
- $p[0]{IsOrigin} and $badanchor->("is an origin commit");
+ $p[0]{IsOrigin} and $badanchor->(__ "is an origin commit");
$p[1]{Differs} & ~DS_DEB and
- $badanchor->("upstream files differ from left parent");
+ $badanchor->(__ "upstream files differ from left parent");
$p[0]{Differs} & ~D_UPS and
- $badanchor->("debian/ differs from right parent");
+ $badanchor->(__ "debian/ differs from right parent");
return $classify->(qw(Anchor),
OrigParents => [ $p[1] ]);
if ($d == D_PAT_ADD) {
return $classify->(qw(AddPatches));
} elsif ($d & (D_PAT_ADD|D_PAT_OTH)) {
- return $unknown->("edits debian/patches");
+ return $unknown->(__ "edits debian/patches");
} elsif ($d & DS_DEB and !($d & ~DS_DEB)) {
my ($ty,$dummy) = git_cat_file "$p[0]{CommitId}:debian";
if ($ty eq 'tree') {
} elsif ($ty eq 'missing') {
return $classify->(qw(BreakwaterStart));
} else {
- return $unknown->("parent's debian is not a directory");
+ return $unknown->(__ "parent's debian is not a directory");
}
} elsif ($d == D_UPS) {
return $classify->(qw(Upstream));
} elsif ($d & DS_DEB and $d & D_UPS and !($d & ~(DS_DEB|D_UPS))) {
return $classify->(qw(Mixed));
} elsif ($d == 0) {
- return $unknown->("no changes");
+ return $unknown->(__ "no changes");
} else {
confess "internal error $objid ?";
}
}
if (!@p) {
- return $unknown->("origin commit");
+ return $unknown->(__ "origin commit");
}
if (@p == 2 && @identical == 1) {
if (@p == 2 && @identical == 2) {
my $get_t = sub {
my ($ph,$pm) = get_commit $_[0]{CommitId};
- $ph =~ m/^committer .* (\d+) [-+]\d+$/m or die "$_->{CommitId} ?";
+ $ph =~ m/^committer .* (\d+) [-+]\d+$/m
+ or confess "$_->{CommitId} ?";
$1;
};
my @bytime = @p;
OrigParents => \@orig_ps);
}
- return $unknown->("complex merge");
+ if (@p == 2 and
+ $r->{Msg} =~ m{^\[git-debrebase merged-breakwater.*\]$}m) {
+ return $classify->("MergedBreakwaters");
+ }
+ if ($r->{Msg} =~ m{^\[(git-debrebase|dgit)[: ].*\]$}m) {
+ return $unknown->(f_ "unknown kind of merge from %s", $1);
+ }
+ if (@p > 2) {
+ return $unknown->(__ "octopus merge");
+ }
+
+ if (!$opt_merges) {
+ return $unknown->(__ "general two-parent merge");
+ }
+
+ return $classify->("VanillaMerge");
+}
+
+sub keycommits ($;$$$$$);
+
+sub mergedbreakwaters_anchor ($) {
+ my ($cl) = @_;
+ my $best_anchor;
+ foreach my $p (@{ $cl->{Parents} }) {
+ my ($panchor, $pbw) = keycommits $p->{CommitId},
+ undef,undef,undef,undef, 1;
+ $best_anchor = $panchor
+ if !defined $best_anchor
+ or is_fast_fwd $best_anchor, $panchor;
+ fail f_ "inconsistent anchors in merged-breakwaters %s",
+ $p->{CommitId}
+ unless is_fast_fwd $panchor, $best_anchor;
+ }
+ return $best_anchor;
}
-sub keycommits ($;$$$$) {
- my ($head, $furniture, $unclean, $trouble, $fatal) = @_;
+sub keycommits ($;$$$$$) {
+ my ($head, $furniture, $unclean, $trouble, $fatal, $claimed_bw) = @_;
# => ($anchor, $breakwater)
- # $unclean->("unclean-$tagsfx", $msg, $cl)
# $furniture->("unclean-$tagsfx", $msg, $cl)
- # $dgitimport->("unclean-$tagsfx", $msg, $cl))
+ # $unclean->("unclean-$tagsfx", $msg, $cl)
# is callled for each situation or commit that
# wouldn't be found in a laundered branch
# $furniture is for furniture commits such as might be found on an
# $fatal is for unprocessable commits, and should normally cause
# a failure. If ignored, agaion, (undef, undef) is returned.
#
+ # If $claimed_bw, this is supposed to be a breakwater commit.
+ #
# If a callback is undef, fail is called instead.
# If a callback is defined but false, the situation is ignored.
# Callbacks may say:
# if the answer is no longer wanted.
my ($anchor, $breakwater);
+ $breakwater = $head if $claimed_bw;
my $clogonly;
my $cl;
- $fatal //= sub { fail $_[2]; };
+ my $found_pm;
+ $fatal //= sub { fail_unprocessable $_[1]; };
my $x = sub {
- my ($cb, $tagsfx, $why) = @_;
- my $m = "branch needs laundering (run git-debrebase): $why";
+ my ($cb, $tagsfx, $mainwhy, $xwhy) = @_;
+ my $why = $mainwhy.$xwhy;
+ my $m = f_ "branch needs laundering (run git-debrebase): %s", $why;
fail $m unless defined $cb;
return unless $cb;
- $cb->("unclean-$tagsfx", $why, $cl);
+ $cb->("unclean-$tagsfx", $why, $cl, $mainwhy);
+ };
+ my $found_anchor = sub {
+ ($anchor) = @_;
+ $breakwater //= $clogonly;
+ $breakwater //= $head;
+ no warnings qw(exiting);
+ last;
};
for (;;) {
$cl = classify $head;
} elsif ($ty eq 'Anchor' or
$ty eq 'TreatAsAnchor' or
$ty eq 'BreakwaterStart') {
- $anchor = $head;
- $breakwater //= $clogonly;
- $breakwater //= $head;
- last;
+ $found_anchor->($head);
} elsif ($ty eq 'Upstream') {
$x->($unclean, 'ordering',
- "packaging change ($breakwater) follows upstream change (eg $head)")
+ (f_ "packaging change (%s) follows upstream change", $breakwater),
+ (f_ " (eg %s)", $head))
if defined $breakwater;
$clogonly = undef;
$breakwater = undef;
} elsif ($ty eq 'Mixed') {
$x->($unclean, 'mixed',
- "found mixed upstream/packaging commit ($head)");
+ (__ "found mixed upstream/packaging commit"),
+ (f_ " (%s)", $head));
$clogonly = undef;
$breakwater = undef;
} elsif ($ty eq 'Pseudomerge' or
$ty eq 'AddPatches') {
+ my $found_pm = 1;
$x->($furniture, (lc $ty),
- "found interchange bureaucracy commit ($ty, $head)");
+ (f_ "found interchange bureaucracy commit (%s)", $ty),
+ (f_ " (%s)", $head));
} elsif ($ty eq 'DgitImportUnpatched') {
- $x->($trouble, 'dgitimport',
- "found dgit dsc import ($head)");
+ if ($found_pm) {
+ $x->($trouble, 'dgitimport',
+ (__ "found dgit dsc import"),
+ (f_ " (%s)", $head));
+ return (undef,undef);
+ } else {
+ $x->($fatal, 'unprocessable',
+ (__ "found bare dgit dsc import with no prior history"),
+ (f_ " (%s)", $head));
+ return (undef,undef);
+ }
+ } elsif ($ty eq 'VanillaMerge') {
+ $x->($trouble, 'vanillamerge',
+ (__ "found vanilla merge"),
+ (f_ " (%s)", $head));
return (undef,undef);
+ } elsif ($ty eq 'MergedBreakwaters') {
+ $found_anchor->(mergedbreakwaters_anchor $cl);
} else {
$x->($fatal, 'unprocessable',
- "found unprocessable commit, cannot cope: $head; $cl->{Why}"
- );
+ (f_ "found unprocessable commit, cannot cope: %s",
+ $cl->{Why}),
+ (f_ " (%s)", $head));
return (undef,undef);
}
$head = $cl->{Parents}[0]{CommitId};
return ($anchor, $breakwater);
}
-sub walk ($;$$);
-sub walk ($;$$) {
+sub walk ($;$$$);
+sub walk ($;$$$) {
my ($input,
- $nogenerate,$report) = @_;
+ $nogenerate,$report, $report_lprefix) = @_;
# => ($tip, $breakwater_tip, $last_anchor)
# (or nothing, if $nogenerate)
printdebug "*** WALK $input ".($nogenerate//0)." ".($report//'-')."\n";
+ $report_lprefix //= '';
# go through commits backwards
# we generate two lists of commits to apply:
my $cl;
my $xmsg = sub {
my ($prose, $info) = @_;
+ # We deliberately do not translate $prose, since this mostly
+ # appears in commits in Debian and they should be in English.
my $ms = $cl->{Msg};
chomp $ms;
- $info //= '';
- $ms .= "\n\n[git-debrebase$info: $prose]\n";
+ confess unless defined $info;
+ $ms .= "\n\n[git-debrebase $info: $prose]\n";
return (Msg => $ms);
};
my $rewrite_from_here = sub {
my $prline = sub {
return unless $report;
- print $report $prdelim, @_;
+ print $report $prdelim, $report_lprefix, @_;
$prdelim = "\n";
};
if ($nogenerate) {
return (undef,undef);
}
- die "commit $cur: Cannot cope with this commit (d.".
- (join ' ', map { sprintf "%#x", $_->{Differs} }
- @{ $cl->{Parents} }).
- (defined $cl->{Why} ? "; $cl->{Why}": '').
- ")";
+ my $d =
+ join ' ',
+ map { sprintf "%#x", $_->{Differs} }
+ @{ $cl->{Parents} };
+ fail_unprocessable f_ +(defined $cl->{Why}
+ ? i_ 'found unprocessable commit, cannot cope; %3$s: (commit %1$s) (d.%2$s)'
+ : i_ 'found unprocessable commit, cannot cope: (commit %1$s) (d.%2$s)'),
+ $cur, $d, $cl->{Why};
};
my $build;
no warnings qw(exiting); last;
};
+ my $nomerge = sub {
+ my ($emsg) = @_;
+ merge_failed $cl->{MergeWreckNotes}, $emsg;
+ };
+
+ my $mwrecknote = sub { &mwrecknote($cl->{MergeWreckNotes}, @_); };
+
my $last_anchor;
for (;;) {
$cl = classify $cur;
+ $cl->{MergeWreckNotes} //= {};
my $ty = $cl->{Type};
my $st = $cl->{SubType};
$prline->("$cl->{CommitId} $cl->{Type}");
} elsif ($ty eq 'Mixed') {
my $queue = sub {
my ($q, $wh) = @_;
- my $cls = { %$cl, $xmsg->("split mixed commit: $wh part") };
+ my $cls = { %$cl, $xmsg->("mixed commit: $wh part",'split') };
push @$q, $cls;
};
$queue->(\@brw_cl, "debian");
push @brw_cl, {
%$cl,
SpecialMethod => 'DgitImportDebianUpdate',
- $xmsg->("convert dgit import: debian changes")
+ $xmsg->("debian changes", 'convert dgit import')
}, {
%$cl,
SpecialMethod => 'DgitImportUpstreamUpdate',
$xmsg->("convert dgit import: upstream update",
- " anchor")
+ "anchor")
};
$prline->(" Import");
$rewrite_from_here->(\@brw_cl);
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->();
+ }
+ confess "$ty ?";
+ } elsif ($ty eq 'MergedBreakwaters') {
+ $last_anchor = mergedbreakwaters_anchor $cl;
+ $build_start->(' MergedBreakwaters', $cur);
+ last;
+ } elsif ($ty eq 'VanillaMerge') {
+ # User may have merged unstitched branch(es). We will
+ # have now lost what ffq-prev was then (since the later
+ # pseudomerge may introduce further changes). The effect
+ # of resolving such a merge is that we may have to go back
+ # further in history to find a merge base, since the one
+ # which was reachable via ffq-prev is no longer findable.
+ # This is suboptimal, but if it all works we'll have done
+ # the right thing.
+ # MERGE-TODO we should warn the user in the docs about this
+
+ my $ok=1;
+ my $best_anchor;
+ # We expect to find a dominating anchor amongst the
+ # inputs' anchors. That will be the new anchor.
+ #
+ # More complicated is finding a merge base for the
+ # breakwaters. We need a merge base that is a breakwater
+ # commit. The ancestors of breakwater commits are more
+ # breakwater commits and possibly upstream commits and the
+ # ancestors of those upstream. Upstreams might have
+ # arbitrary ancestors. But any upstream commit U is
+ # either included in both anchors, in which case the
+ # earlier anchor is a better merge base than any of U's
+ # ancestors; or U is not included in the older anchor, in
+ # which case U is not an ancestor of the vanilla merge at
+ # all. So no upstream commit, nor any ancestor thereof,
+ # is a best merge base. As for non-breakwater Debian
+ # commits: these are never ancestors of any breakwater.
+ #
+ # So any best merge base as found by git-merge-base
+ # is a suitable breakwater anchor. Usually there will
+ # be only one.
+
+ printdebug "*** MERGE\n";
+
+ my @bwbcmd = (@git, qw(merge-base));
+ my @ibcmd = (@git, qw(merge-base --all));
+ my $might_be_in_bw = 1;
+
+ my $ps = $cl->{Parents};
+
+ $mwrecknote->('vanilla-merge', $cl->{CommitId});
+
+ foreach my $p (@$ps) {
+ $prline->(" VanillaMerge ".$p->{Ix});
+ $prprdelim->();
+ my ($ptip, $pbw, $panchor) =
+ walk $p->{CommitId}, 0, $report,
+ $report_lprefix.' ';
+ $p->{Laundered} = $p->{SeriesTip} = $ptip;
+ $p->{Breakwater} = $p->{SeriesBase} = $pbw;
+ $p->{Anchor} = $panchor;
+
+ my $lr = $p->{LeftRight} = (qw(left right))[$p->{Ix}];
+ $mwrecknote->("$lr-input", $p->{CommitId});
+
+ my $mwrecknote_parent = sub {
+ my ($which) = @_;
+ $mwrecknote->("$lr-".(lc $which), $p->{$which});
+ };
+ $mwrecknote_parent->('Laundered');
+ $mwrecknote_parent->('Breakwater');
+ $mwrecknote_parent->('Anchor');
+
+ $best_anchor = $panchor if
+ !defined $best_anchor or
+ is_fast_fwd $best_anchor, $panchor;
+
+ printdebug " MERGE BA best=".($best_anchor//'-').
+ " p=$panchor\n";
+ }
+
+ $mwrecknote->('result-anchor', $best_anchor);
+
+ foreach my $p (@$ps) {
+ $prline->(" VanillaMerge ".$p->{Ix});
+ if (!is_fast_fwd $p->{Anchor}, $best_anchor) {
+ $nomerge->('divergent anchors');
+ } elsif ($p->{Anchor} eq $best_anchor) {
+ print $report " SameAnchor" if $report;
+ } else {
+ print $report " SupersededAnchor" if $report;
+ }
+ if ($p->{Breakwater} eq $p->{CommitId}) {
+ # this parent commit was its own breakwater,
+ # ie it is part of the breakwater
+ print $report " Breakwater" if $report;
+ } else {
+ $might_be_in_bw = 0;
+ }
+ push @bwbcmd, $p->{Breakwater};
+ push @ibcmd, $p->{CommitId};
}
- die "$ty ?";
+
+ if ($ok && $might_be_in_bw) {
+ # We could rewrite this to contaion the metadata
+ # declaring it to be MergedBreakwaters, but
+ # unnecessarily rewriting a merge seems unhelpful.
+ $prline->(" VanillaMerge MergedBreakwaters");
+ $last_anchor = $best_anchor;
+ $build_start->('MergedBreakwaters', $cur);
+ }
+
+ my $bwb = cmdoutput @bwbcmd;
+
+ # OK, now we have a breakwater base, but we need the merge
+ # base for the interchange branch because we need the delta
+ # queue.
+ #
+ # This a the best merge base of our inputs which has the
+ # breakwater merge base as an ancestor.
+
+ my @ibs =
+ grep /./,
+ split /\n/,
+ cmdoutput @ibcmd;
+
+ @ibs or confess 'internal error, expected anchor at least ?';
+
+ my $ib;
+ my $ibleaf;
+ foreach my $tibix (0..$#ibs) {
+ my $tib = $ibs[$tibix];
+ my $ff = is_fast_fwd $bwb, $tib;
+ my $ok = !$ff ? 'rej' : $ib ? 'extra' : 'ok';
+ my $tibleaf = "interchange-mbcand-$ok-$tibix";
+ $mwrecknote->($tibleaf, $tib);
+ next unless $ff;
+ next if $ib;
+ $ib = $tib;
+ $ibleaf = $tibleaf;
+ }
+
+ $ib or $nomerge->("no suitable interchange merge base");
+
+ $prline->(" VanillaMerge Base");
+ $prprdelim->();
+ my ($btip, $bbw, $banchor) = eval {
+ walk $ib, 0, $report, $report_lprefix.' ';
+ };
+ $nomerge->("walking interchange branch merge base ($ibleaf):\n".
+ $@)
+ if length $@;
+
+ $mwrecknote->("mergebase-laundered", $btip);
+ $mwrecknote->("mergebase-breakwater", $bbw);
+ $mwrecknote->("mergebase-anchor", $banchor);
+
+ my $ibinfo = { SeriesTip => $btip,
+ SeriesBase => $bbw,
+ Anchor => $banchor,
+ LeftRight => 'mergebase' };
+
+ $bbw eq $bwb
+ or $nomerge->("interchange merge-base ($ib)'s".
+ " breakwater ($bbw)".
+ " != breakwaters' merge-base ($bwb)");
+
+ grep { $_->{Anchor} eq $ibinfo->{Anchor} } @$ps
+ or $nomerge->("interchange merge-base ($ib)'s".
+ " anchor ($ibinfo->{SeriesBase})".
+ " != any merge input's anchor (".
+ (join ' ', map { $_->{Anchor} } @$ps).
+ ")");
+
+ $cl->{MergeInterchangeBaseInfo} = $ibinfo;
+ $cl->{MergeBestAnchor} = $best_anchor;
+ push @brw_cl, {
+ %$cl,
+ SpecialMethod => 'MergeCreateMergedBreakwaters',
+ $xmsg->('constructed from vanilla merge',
+ 'merged-breakwater'),
+ };
+ push @upp_cl, {
+ %$cl,
+ SpecialMethod => 'MergeMergeSeries',
+ };
+ $build_start->('MergeBreakwaters', $cur);
} else {
printdebug "*** WALK BOMB unrecognised\n";
return $bomb->();
my $rewriting = 0;
- my $read_tree_debian = sub {
- my ($treeish) = @_;
- read_tree_subdir 'debian', "$treeish:debian";
- rm_subdir_cached 'debian/patches';
- };
- my $read_tree_upstream = sub {
- my ($treeish) = @_;
- runcmd @git, qw(read-tree), $treeish;
- $read_tree_debian->($build);
- };
-
$#upp_cl = $upp_limit if defined $upp_limit;
my $committer_authline = calculate_committer_authline();
printdebug "WALK REBUILD $build ".(scalar @processed)."\n";
- confess "internal error" unless $build eq (pop @processed)->{CommitId};
+ confess __ "internal error" unless $build eq (pop @processed)->{CommitId};
in_workarea sub {
- mkdir $rd or $!==EEXIST or die $!;
+ mkdir $rd or $!==EEXIST or confess $!;
my $current_method;
- runcmd @git, qw(read-tree), $build;
+ my $want_debian = $build;
+ my $want_upstream = $build;
+
+ my $read_tree_upstream = sub { ($want_upstream) = @_; };
+ my $read_tree_debian = sub { ($want_debian) = @_; };
+
foreach my $cl (qw(Debian), (reverse @brw_cl),
{ SpecialMethod => 'RecordBreakwaterTip' },
qw(Upstream), (reverse @upp_cl)) {
next unless $differs & D_UPS;
$read_tree_upstream->($cltree);
push @parents, map { $_->{CommitId} } @{ $cl->{OrigParents} };
+ } elsif ($method eq 'MergeCreateMergedBreakwaters') {
+ print "Found a general merge, will try to tidy it up.\n";
+ $rewriting = 1;
+ $read_tree_upstream->($cl->{MergeBestAnchor});
+ $read_tree_debian->($cltree);
+ @parents = map { $_->{Breakwater} } @{ $cl->{Parents} };
+ } elsif ($method eq 'MergeMergeSeries') {
+ my $cachehit = reflog_cache_lookup
+ $merge_cache_ref, "vanilla-merge $cl->{CommitId}";
+ if ($cachehit) {
+ print "Using supplied resolution for $cl->{CommitId}...\n";
+ $build = $cachehit;
+ $mwrecknote->('cached-resolution', $build);
+ } else {
+ print "Running merge resolution for $cl->{CommitId}...\n";
+ $mwrecknote->('new-base', $build);
+ $build = merge_series
+ $build, $cl->{MergeWreckNotes},
+ $cl->{MergeInterchangeBaseInfo},
+ @{ $cl->{Parents} };
+ }
+ $last_anchor = $cl->{MergeBestAnchor};
+
+ # Check for mismerges:
+ my $check = sub {
+ my ($against, $allow, $what) = @_;
+ my $differs = get_differs $build, $against;
+ $nomerge->(sprintf
+ "merge misresolved: %s are not the same (%s %s d.%#x)",
+ $what, $against, $build, $differs)
+ if $differs & ~($allow | D_PAT_ADD);
+ };
+
+ # Breakwater changes which were in each side of the
+ # merge will have been incorporated into the
+ # MergeCreateMergedBreakwaters output. Because the
+ # upstream series was rebased onto the new breakwater,
+ # so should all of the packaging changes which were in
+ # the input.
+ $check->($input, D_UPS, 'debian files');
+
+ # Upstream files are merge_series, which ought to
+ # have been identical to the original merge.
+ $check->($cl->{CommitId}, DS_DEB, 'upstream files');
+
+ print "Merge resolution successful.\n";
+ next;
} else {
confess "$method ?";
}
printdebug "WALK REWRITING NOW cl=$cl procd=$procd\n";
}
}
- my $newtree = cmdoutput @git, qw(write-tree);
- my $ch = $cl->{Hdr};
- $ch =~ s{^tree .*}{tree $newtree}m or confess "$ch ?";
- $ch =~ s{^parent .*\n}{}mg;
- $ch =~ s{(?=^author)}{
- join '', map { "parent $_\n" } @parents
- }me or confess "$ch ?";
if ($rewriting) {
- $ch =~ s{^committer .*$}{$committer_authline}m
- or confess "$ch ?";
+ read_tree_upstream $want_upstream, 0, $want_debian;
+
+ my $newtree = cmdoutput @git, qw(write-tree);
+ my $ch = $cl->{Hdr};
+ $ch =~ s{^tree .*}{tree $newtree}m or confess "$ch ?";
+ $ch =~ s{^parent .*\n}{}mg;
+ $ch =~ s{(?=^author)}{
+ join '', map { "parent $_\n" } @parents
+ }me or confess "$ch ?";
+ if ($rewriting) {
+ $ch =~ s{^committer .*$}{$committer_authline}m
+ or confess "$ch ?";
+ }
+ my $cf = "$rd/m$rewriting";
+ open CD, ">", $cf or confess $!;
+ print CD $ch, "\n", $cl->{Msg} or confess $!;
+ close CD or confess $!;
+ my @cmd = (@git, qw(hash-object));
+ push @cmd, qw(-w) if $rewriting;
+ push @cmd, qw(-t commit), $cf;
+ my $newcommit = cmdoutput @cmd;
+ confess "$ch ?" unless $rewriting
+ or $newcommit eq $cl->{CommitId};
+ $build = $newcommit;
+ } else {
+ $build = $cl->{CommitId};
+ trees_diff_walk "$want_upstream:", "$build:", sub {
+ my ($n) = @_;
+ no warnings qw(exiting);
+ next if $n eq 'debian/';
+ confess f_ "mismatch %s ?", "@_";
+ };
+ trees_diff_walk "$want_debian:debian", "$build:debian", sub {
+ confess f_ "mismatch %s ?", "@_";
+ };
+ my @old_parents = map { $_->{CommitId} } @{ $cl->{Parents} };
+ confess f_ "mismatch %s != %s ?", "@parents", "@old_parents"
+ unless "@parents" eq "@old_parents";
}
- my $cf = "$rd/m$rewriting";
- open CD, ">", $cf or die $!;
- print CD $ch, "\n", $cl->{Msg} or die $!;
- close CD or die $!;
- my @cmd = (@git, qw(hash-object));
- push @cmd, qw(-w) if $rewriting;
- push @cmd, qw(-t commit), $cf;
- my $newcommit = cmdoutput @cmd;
- confess "$ch ?" unless $rewriting or $newcommit eq $cl->{CommitId};
- $build = $newcommit;
if (grep { $method eq $_ } qw(DgitImportUpstreamUpdate)) {
$last_anchor = $cur;
}
};
my $final_check = get_differs $build, $input;
- die sprintf "internal error %#x %s %s", $final_check, $build, $input
+ confess f_ "internal error %#x %s %s", $final_check, $input, $build
if $final_check & ~D_PAT_ADD;
my @r = ($build, $breakwater, $last_anchor);
sub update_head_postlaunder ($$$) {
my ($old, $tip, $reflogmsg) = @_;
- return if $tip eq $old;
- print "git-debrebase: laundered (head was $old)\n";
+ return if $tip eq $old && !@deferred_updates;
+ print f_ "%s: laundered (head was %s)\n", $us, $old;
update_head $old, $tip, $reflogmsg;
# no tree changes except debian/patches
runcmd @git, qw(rm --quiet --ignore-unmatch -rf debian/patches);
}
+sub currently_rebasing() {
+ foreach (qw(rebase-merge rebase-apply)) {
+ return 1 if stat_exists "$maindir_gitdir/$_";
+ }
+ return 0;
+}
+
+sub bail_if_rebasing() {
+ fail __ "you are in the middle of a git-rebase already"
+ if currently_rebasing();
+}
+
sub do_launder_head ($) {
my ($reflogmsg) = @_;
my $old = get_head();
sub defaultcmd_rebase () {
push @ARGV, @{ $opt_defaultcmd_interactive // [] };
- my ($tip,$breakwater) = do_launder_head 'launder for rebase';
+ my ($tip,$breakwater) = do_launder_head __ 'launder for rebase';
runcmd @git, qw(rebase), @ARGV, $breakwater if @ARGV;
}
sub cmd_analyse () {
- die if ($ARGV[0]//'') =~ m/^-/;
- badusage "too many arguments to analyse" if @ARGV>1;
+ badusage __ "analyse does not support any options"
+ if @ARGV and $ARGV[0] =~ m/^-/;
+ badusage __ "too many arguments to analyse" if @ARGV>1;
my ($old) = @ARGV;
if (defined $old) {
$old = git_rev_parse $old;
$old = git_rev_parse 'HEAD';
}
my ($dummy,$breakwater) = walk $old, 1,*STDOUT;
- STDOUT->error and die $!;
-}
-
-sub ffq_prev_branchinfo () {
- my $current = git_get_symref();
- return gdr_ffq_prev_branchinfo($current);
+ STDOUT->error and confess $!;
}
-sub record_ffq_prev_deferred () {
- # => ('status', "message")
- # 'status' may be
- # deferred message is undef
+sub ffq_check ($;$$) {
+ # calls $ff and/or $notff zero or more times
+ # then returns either (status,message) where status is
# exists
# detached
# weird-symref
# notbranch
- # if not ff from some branch we should be ff from, is an snag
- # if "deferred", will have added something about that to
- # @deferred_update_messages, and also maybe printed (already)
- # some messages about ff checks
+ # or (undef,undef, $ffq_prev,$gdrlast)
+ # $ff and $notff are called like this:
+ # $ff->("message for stdout\n");
+ # $notff->('snag-name', $message);
+ # normally $currentval should be HEAD
+ my ($currentval, $ff, $notff) =@_;
+
+ $ff //= sub { print $_[0] or confess $!; };
+ $notff //= \&snag;
+
my ($status, $message, $current, $ffq_prev, $gdrlast)
= ffq_prev_branchinfo();
return ($status, $message) unless $status eq 'branch';
- my $currentval = get_head();
-
my $exists = git_get_ref $ffq_prev;
- return ('exists',"$ffq_prev already exists") if $exists;
+ return ('exists', f_ "%s already exists", $ffq_prev) if $exists;
- return ('not-branch', 'HEAD symref is not to refs/heads/')
+ return ('not-branch', __ 'HEAD symref is not to refs/heads/')
unless $current =~ m{^refs/heads/};
my $branch = $';
}
return if $invert;
my $lrval = git_get_ref $lrref;
- return unless defined $lrval;
+ return unless length $lrval;
if (is_fast_fwd $lrval, $currentval) {
- print "OK, you are ahead of $lrref\n" or die $!;
+ $ff->(f_ "OK, you are ahead of %s\n", $lrref);
$checked{$lrref} = 1;
} elsif (is_fast_fwd $currentval, $lrval) {
$checked{$lrref} = -1;
- snag 'behind', "you are behind $lrref, divergence risk";
+ $notff->('behind', f_ "you are behind %s, divergence risk",
+ $lrref);
} else {
$checked{$lrref} = -1;
- snag 'diverged', "you have diverged from $lrref";
+ $notff->('diverged', f_ "you have diverged from %s", $lrref);
}
};
'remote push branch');
}
if ($branch =~ m{^dgit/}) {
- $check->("refs/remotes/dgit/$branch", 'remote dgit branch');
+ $check->("refs/remotes/dgit/$branch",
+ __ 'remote dgit branch');
} elsif ($branch =~ m{^master$}) {
- $check->("refs/remotes/dgit/dgit/sid", 'remote dgit branch for sid');
+ $check->("refs/remotes/dgit/dgit/sid",
+ __ 'remote dgit branch for sid');
}
+ return (undef, undef, $ffq_prev, $gdrlast);
+}
+
+sub record_ffq_prev_deferred () {
+ # => ('status', "message")
+ # 'status' may be
+ # deferred message is undef
+ # exists
+ # detached
+ # weird-symref
+ # notbranch
+ # if not ff from some branch we should be ff from, is an snag
+ # if "deferred", will have added something about that to
+ # @deferred_update_messages, and also maybe printed (already)
+ # some messages about ff checks
+ bail_if_rebasing();
+ my $currentval = get_head();
+
+ my ($status,$message, $ffq_prev,$gdrlast) = ffq_check $currentval;
+ return ($status,$message) if defined $status;
snags_maybe_bail();
push @deferred_updates, "update $ffq_prev $currentval $git_null_obj";
push @deferred_updates, "delete $gdrlast";
- push @deferred_update_messages, "Recorded current head for preservation";
+ push @deferred_update_messages,
+ __ "Recorded previous head for preservation";
return ('deferred', undef);
}
my ($status, $message) = record_ffq_prev_deferred();
if ($status eq 'deferred' || $status eq 'exists') {
} else {
- snag $status, "could not record ffq-prev: $message";
+ snag $status, f_ "could not record ffq-prev: %s", $message;
snags_maybe_bail();
}
}
sub ffq_prev_info () {
+ bail_if_rebasing();
# => ($ffq_prev, $gdrlast, $ffq_prev_commitish)
my ($status, $message, $current, $ffq_prev, $gdrlast)
= ffq_prev_branchinfo();
if ($status ne 'branch') {
- snag $status, "could not check ffq-prev: $message";
+ snag $status, f_ "could not check ffq-prev: %s", $message;
snags_maybe_bail();
}
my $ffq_prev_commitish = $ffq_prev && git_get_ref $ffq_prev;
# ffq-prev is ahead of us, and the only tree changes it has
# are possibly addition of things in debian/patches/.
# Just wind forwards rather than making a pointless pseudomerge.
- push @deferred_updates,
- "update $gdrlast $ffq_prev_commitish $git_null_obj";
+ record_gdrlast $gdrlast, $ffq_prev_commitish;
update_head_checkout $old_head, $ffq_prev_commitish,
- "stitch (fast forward)";
+ sprintf "stitch (%s)", __ 'fast forward';
return;
}
}
# We make pseudomerges with L as the contributing parent.
# This makes git rev-list --first-parent work properly.
my $new_head = make_commit [ $old_head, $ffq_prev ], [
- 'Declare fast forward / record previous work',
+ # we translate this against the time when this same code is
+ # used outside Debian, for downstreams and users
+ (__ 'Declare fast forward / record previous work'),
"[git-debrebase pseudomerge: $prose]",
];
- push @deferred_updates, "update $gdrlast $new_head $git_null_obj";
+ record_gdrlast $gdrlast, $new_head;
update_head $old_head, $new_head, "stitch: $prose";
}
my ($ffq_prev, $gdrlast, $ffq_prev_commitish) = ffq_prev_info();
if (!$ffq_prev_commitish) {
- fail "No ffq-prev to stitch." unless $opt_noop_ok;
+ fail __ "No ffq-prev to stitch." unless $opt_noop_ok;
return;
}
my $dangling_head = get_head();
stitch($dangling_head, $ffq_prev, $gdrlast, $ffq_prev_commitish, $prose);
}
-sub cmd_new_upstream_v0 () {
+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;
+ }
+}
+
+sub resolve_upstream_version ($$) {
+ my ($new_upstream, $upstream_version) = @_;
+
+ if (!defined $new_upstream) {
+ my @tried;
+ $new_upstream = upstream_commitish_search $upstream_version, \@tried;
+ if (!length $new_upstream) {
+ fail f_
+ "Could not determine appropriate upstream commitish.\n".
+ " (Tried these tags: %s)\n".
+ " Check version, and specify upstream commitish explicitly.",
+ "@tried";
+ }
+ }
+ $new_upstream = git_rev_parse $new_upstream;
+
+ return $new_upstream;
+}
+
+sub cmd_new_upstream () {
# automatically and unconditionally launders before rebasing
# if rebase --abort is used, laundering has still been done
my %pieces;
- badusage "need NEW-VERSION [UPS-COMMITTISH]" unless @ARGV >= 1;
+ badusage __ "need NEW-VERSION [UPS-COMMITTISH]" unless @ARGV >= 1;
# parse args - low commitment
- my $new_version = (new Dpkg::Version scalar(shift @ARGV), check => 1);
- my $new_upstream_version = $new_version->version();
+ my $spec_version = shift @ARGV;
+ my $new_version = (new Dpkg::Version $spec_version, check => 1);
+ fail f_ "bad version number \`%s'", $spec_version
+ unless defined $new_version;
+ if ($new_version->is_native()) {
+ $new_version = (new Dpkg::Version "$spec_version-1", check => 1);
+ }
- my $new_upstream = git_rev_parse (shift @ARGV // 'upstream');
+ my $new_upstream = shift @ARGV;
+ my $new_upstream_version = upstreamversion $new_version;
+ $new_upstream =
+ resolve_upstream_version $new_upstream, $new_upstream_version;
record_ffq_auto();
my ($n, @x) = @_; # may be ''
my $pc = $pieces{$n} //= {
Name => $n,
- Desc => ($n ? "upstream piece \`$n'" : "upstream (main piece"),
+ Desc => ($n ? (f_ "upstream piece \`%s'", $n)
+ : (__ "upstream (main piece")),
};
while (my $k = shift @x) { $pc->{$k} = shift @x; }
$pc;
while (@ARGV && $ARGV[0] !~ m{^-}) {
my $n = shift @ARGV;
- badusage "for each EXTRA-UPS-NAME need EXTRA-UPS-COMMITISH"
+ badusage __ "for each EXTRA-UPS-NAME need EXTRA-UPS-COMMITISH"
unless @ARGV && $ARGV[0] !~ m{^-};
my $c = git_rev_parse shift @ARGV;
- die unless $n =~ m/^$extra_orig_namepart_re$/;
+ confess unless $n =~ m/^$extra_orig_namepart_re$/;
$newpiece->($n, New => $c);
}
my $old_upstream;
if (!$old_anchor_cl->{OrigParents}) {
snag 'anchor-treated',
- 'old anchor is recognised due to --anchor, cannot check upstream';
+ __ 'old anchor is recognised due to --anchor, cannot check upstream';
} else {
$old_upstream = parsecommit
$old_anchor_cl->{OrigParents}[0]{CommitId};
) {
my @oldpieces = (split / /, $1);
my $old_n_parents = scalar @{ $old_upstream->{Parents} };
- if (@oldpieces != $old_n_parents) {
- snag 'upstream-confusing', sprintf
+ if ($old_n_parents != @oldpieces &&
+ $old_n_parents != @oldpieces + 1) {
+ snag 'upstream-confusing', f_
"previous upstream combine %s".
- " mentions %d pieces (each implying one orig commit)".
- " but has %d parents",
+ " mentions %d pieces (each implying one parent)".
+ " but has %d parents".
+ " (one per piece plus maybe a previous combine)",
$old_upstream->{CommitId},
(scalar @oldpieces),
$old_n_parents;
} elsif ($oldpieces[0] ne '.') {
- snag 'upstream-confusing', sprintf
+ snag 'upstream-confusing', f_
"previous upstream combine %s".
" first piece is not \`.'",
$oldpieces[0];
$oldpieces[0] = '';
foreach my $i (0..$#oldpieces) {
my $n = $oldpieces[$i];
- $piece->($n, Old => $old_upstream->{CommitId}.'^'.($i+1));
+ my $hat = 1 + $i + ($old_n_parents - @oldpieces);
+ $piece->($n, Old => $old_upstream->{CommitId}.'^'.$hat);
}
}
} else {
- snag 'upstream-confusing',
- "previous upstream $old_upstream->{CommitId} is from".
- " git-debrebase but not an \`upstream-combine' commit";
+ snag 'upstream-confusing', f_
+ "previous upstream %s is from".
+ " git-debrebase but not an \`upstream-combine' commit",
+ $old_upstream->{CommitId};
}
}
# we have complained already
} elsif (!$pc->{Old}) {
snag 'upstream-new-piece',
- "introducing upstream piece \`$pc->{Name}'";
+ f_ "introducing upstream piece \`%s'", $pc->{Name};
} elsif (!$pc->{New}) {
snag 'upstream-rm-piece',
- "dropping upstream piece \`$pc->{Name}'";
+ f_ "dropping upstream piece \`%s'", $pc->{Name};
} elsif (!is_fast_fwd $pc->{Old}, $pc->{New}) {
snag 'upstream-not-ff',
- "not fast forward: $pc->{Name} $pc->{Old}..$pc->{New}";
+ f_ "not fast forward: %s %s",
+ $pc->{Name}, "$pc->{Old}..$pc->{New}";
}
}
"[git-debrebase anchor: new upstream $new_upstream_version, merge]",
];
- my $clogsignoff = cmdoutput qw(git show),
- '--pretty=format:%an <%ae> %aD',
- $new_bw;
-
# Now we have to add a changelog stanza so the Debian version
- # is right.
- die if unlink "debian";
- die $! unless $!==ENOENT or $!==ENOTEMPTY;
- unlink "debian/changelog" or $!==ENOENT or die $!;
- mkdir "debian" or die $!;
- open CN, ">", "debian/changelog" or die $!;
- my $oldclog = git_cat_file ":debian/changelog";
- $oldclog =~ m/^($package_re) \(\S+\) / or
- fail "cannot parse old changelog to get package name";
- my $p = $1;
- print CN <<END, $oldclog or die $!;
-$p ($new_version) UNRELEASED; urgency=medium
-
- * Update to new upstream version $new_upstream_version.
-
- -- $clogsignoff
-
-END
- close CN or die $!;
+ # is right. We use debchange to do this. Invoking debchange
+ # here is a bit fiddly because it has a lot of optional
+ # exciting behaviours, some of which will break stuff, and
+ # some of which won't work in a playtree.
+
+ # Make debchange use git's idea of the user's identity.
+ # That way, if the user never uses debchange et al, configuring
+ # git is enough.
+ my $usetup = sub {
+ my ($e, $k) = @_;
+ my $v = cfg $k, 1;
+ defined $v or return;
+ $ENV{$e} = $v;
+ };
+ $usetup->('DEBEMAIL', 'user.email');
+ $usetup->('DEBFULLNAME', 'user.name');
+
+ my @dch = (qw(debchange
+ --allow-lower-version .*
+ --no-auto-nmu
+ --preserve
+ --vendor=Unknown-Vendor
+ --changelog debian/changelog
+ --check-dirname-level 0
+ --release-heuristic=changelog
+ -v), $new_version,
+ "Update to new upstream version $new_upstream_version.");
+
+ runcmd @git, qw(checkout -q debian/changelog);
+ runcmd @dch;
runcmd @git, qw(update-index --add --replace), 'debian/changelog';
# Now we have the final new breakwater branch in the index
$new_bw = make_commit [ $new_bw ],
[ "Update changelog for new upstream $new_upstream_version",
- "[git-debrebase: new upstream $new_upstream_version, changelog]",
+ "[git-debrebase changelog: new upstream $new_upstream_version]",
];
};
'launder for new upstream';
my @cmd = (@git, qw(rebase --onto), $new_bw, $old_bw, @ARGV);
+ local $ENV{GIT_REFLOG_ACTION} = git_reflog_action_msg
+ "debrebase new-upstream $new_version: rebase";
runcmd @cmd;
# now it's for the user to sort out
}
badusage "no arguments allowed" if @ARGV;
my ($status, $msg) = record_ffq_prev_deferred();
if ($status eq 'exists' && $opt_noop_ok) {
- print "Previous head already recorded\n" or die $!;
+ print __ "Previous head already recorded\n" or confess $!;
} elsif ($status eq 'deferred') {
run_deferred_updates 'record-ffq-prev';
} else {
- fail "Could not preserve: $msg";
+ fail f_ "Could not preserve: %s", $msg;
}
}
sub cmd_anchor () {
- badusage "no arguments allowed" if @ARGV;
+ badusage __ "no arguments allowed" if @ARGV;
my ($anchor, $bw) = keycommits +(git_rev_parse 'HEAD'), 0,0;
- print "$bw\n" or die $!;
+ print "$anchor\n" or confess $!;
}
sub cmd_breakwater () {
- badusage "no arguments allowed" if @ARGV;
+ badusage __ "no arguments allowed" if @ARGV;
my ($anchor, $bw) = keycommits +(git_rev_parse 'HEAD'), 0,0;
- print "$bw\n" or die $!;
+ print "$bw\n" or confess $!;
}
sub cmd_status () {
- badusage "no arguments allowed" if @ARGV;
+ badusage __ "no arguments allowed" if @ARGV;
# todo: gdr status should print divergence info
# todo: gdr status should print upstream component(s) info
# todo: gdr should leave/maintain some refs with this kind of info ?
- my $oldest = [ 0 ];
+ my $oldest = { Badness => 0 };
my $newest;
my $note = sub {
- my ($badness, $ourmsg, $snagname, $kcmsg, $cl) = @_;
- if ($oldest->[0] < $badness) {
+ my ($badness, $ourmsg, $snagname, $dummy, $cl, $kcmsg) = @_;
+ if ($oldest->{Badness} < $badness) {
$oldest = $newest = undef;
}
- $oldest = \@_; # we're walking backwards
- $newest //= \@_;
+ $oldest = {
+ Badness => $badness,
+ CommitId => $cl->{CommitId},
+ OurMsg => $ourmsg,
+ KcMsg => $kcmsg,
+ };
+ $newest //= $oldest;
};
my ($anchor, $bw) = keycommits +(git_rev_parse 'HEAD'),
- sub { $note->(1, 'branch contains furniture (not laundered)', @_); },
- sub { $note->(2, 'branch is unlaundered', @_); },
- sub { $note->(3, 'branch needs laundering', @_); },
- sub { $note->(4, 'branch not in git-debrebase form', @_); };
+ sub { $note->(1, __ 'branch contains furniture (not laundered)',@_); },
+ sub { $note->(2, __ 'branch is unlaundered', @_); },
+ sub { $note->(3, __ 'branch needs laundering', @_); },
+ sub { $note->(4, __ 'branch not in git-debrebase form', @_); };
my $prcommitinfo = sub {
my ($cid) = @_;
- flush STDOUT or die $!;
+ flush STDOUT or confess $!;
runcmd @git, qw(--no-pager log -n1),
'--pretty=format: %h %s%n',
$cid;
};
- print "current branch contents, in git-debrebase terms:\n";
- if (!$oldest->[0]) {
- print " branch is laundered\n";
+ print __ "current branch contents, in git-debrebase terms:\n";
+ if (!$oldest->{Badness}) {
+ print __ " branch is laundered\n";
} else {
- print " $oldest->[1]\n";
+ print " $oldest->{OurMsg}\n";
my $printed = '';
foreach my $info ($oldest, $newest) {
- my $cid = $info->[4]{CommitId};
+ my $cid = $info->{CommitId};
next if $cid eq $printed;
$printed = $cid;
- print " $info->[3]\n";
+ print " $info->{KcMsg}\n";
$prcommitinfo->($cid);
}
}
my $prab = sub {
my ($cid, $what) = @_;
if (!defined $cid) {
- print " $what is not well-defined\n";
+ print f_ " %s is not well-defined\n", $what;
} else {
print " $what\n";
$prcommitinfo->($cid);
}
};
- print "key git-debrebase commits:\n";
- $prab->($anchor, 'anchor');
- $prab->($bw, 'breakwater');
+ print __ "key git-debrebase commits:\n";
+ $prab->($anchor, __ 'anchor');
+ $prab->($bw, __ 'breakwater');
my ($ffqstatus, $ffq_msg, $current, $ffq_prev, $gdrlast) =
ffq_prev_branchinfo();
- print "branch and ref status, in git-debrebase terms:\n";
+ print __ "branch and ref status, in git-debrebase terms:\n";
if ($ffq_msg) {
print " $ffq_msg\n";
} else {
$ffq_prev = git_get_ref $ffq_prev;
$gdrlast = git_get_ref $gdrlast;
if ($ffq_prev) {
- print " unstitched; previous tip was:\n";
+ print __ " unstitched; previous tip was:\n";
$prcommitinfo->($ffq_prev);
} elsif (!$gdrlast) {
- print " stitched? (no record of git-debrebase work)\n";
+ print __ " stitched? (no record of git-debrebase work)\n";
} elsif (is_fast_fwd $gdrlast, 'HEAD') {
- print " stitched\n";
+ print __ " stitched\n";
} else {
- print " not git-debrebase (diverged since last stitch)\n"
+ print __ " not git-debrebase (diverged since last stitch)\n"
}
}
+ print __ "you are currently rebasing\n" if currently_rebasing();
}
sub cmd_stitch () {
my $prose = 'stitch';
- GetOptions('prose=s', \$prose) or die badusage("bad options to stitch");
- badusage "no arguments allowed" if @ARGV;
+ getoptions("stitch",
+ 'prose=s', \$prose);
+ badusage __ "no arguments allowed" if @ARGV;
do_stitch $prose, 0;
}
-sub cmd_prepush () { cmd_stitch(); }
+sub cmd_prepush () {
+ $opt_noop_ok = 1;
+ cmd_stitch();
+}
sub cmd_quick () {
- badusage "no arguments allowed" if @ARGV;
- do_launder_head 'launder for git-debrebase quick';
+ badusage __ "no arguments allowed" if @ARGV;
+ do_launder_head __ 'launder for git-debrebase quick';
do_stitch 'quick';
}
sub cmd_conclude () {
my ($ffq_prev, $gdrlast, $ffq_prev_commitish) = ffq_prev_info();
if (!$ffq_prev_commitish) {
- fail "No ongoing git-debrebase session." unless $opt_noop_ok;
+ fail __ "No ongoing git-debrebase session." unless $opt_noop_ok;
return;
}
my $dangling_head = get_head();
badusage "no arguments allowed" if @ARGV;
- do_launder_head 'launder for git-debrebase quick';
+ do_launder_head __ 'launder for git-debrebase quick';
do_stitch 'quick';
}
+sub cmd_scrap () {
+ if (currently_rebasing()) {
+ runcmd @git, qw(rebase --abort);
+ push @deferred_updates, 'verify HEAD HEAD';
+ # noop, but stops us complaining that scrap was a noop
+ }
+ badusage __ "no arguments allowed" if @ARGV;
+ my ($ffq_prev, $gdrlast, $ffq_prev_commitish) = ffq_prev_info();
+ my $scrapping_head;
+ if ($ffq_prev_commitish) {
+ $scrapping_head = get_head();
+ push @deferred_updates,
+ "update $gdrlast $ffq_prev_commitish $git_null_obj",
+ "update $ffq_prev $git_null_obj $ffq_prev_commitish";
+ }
+ if (git_get_ref $merge_cache_ref) {
+ push @deferred_updates,
+ "delete $merge_cache_ref";
+ }
+ if (!@deferred_updates) {
+ fail __ "No ongoing git-debrebase session." unless $opt_noop_ok;
+ finish 0;
+ }
+ snags_maybe_bail();
+ if ($scrapping_head) {
+ update_head_checkout $scrapping_head, $ffq_prev_commitish, "scrap";
+ } else {
+ run_deferred_updates "scrap";
+ }
+}
+
sub make_patches_staged ($) {
my ($head) = @_;
# Produces the patches that would result from $head if it were
# laundered.
my ($secret_head, $secret_bw, $last_anchor) = walk $head;
fresh_workarea();
+ my $any;
in_workarea sub {
- runcmd @git, qw(checkout -q -b bw), $secret_bw;
- runcmd @git, qw(checkout -q -b patch-queue/bw), $secret_head;
- runcmd qw(gbp pq export);
- runcmd @git, qw(add debian/patches);
+ $any = gbp_pq_export 'bw', $secret_bw, $secret_head;
};
+ return $any;
}
sub make_patches ($) {
my ($head) = @_;
keycommits $head, 0, \&snag;
- make_patches_staged $head;
+ my $any = make_patches_staged $head;
my $out;
in_workarea sub {
- my $ptree = cmdoutput @git, qw(write-tree --prefix=debian/patches/);
+ my $ptree = !$any ? undef :
+ cmdoutput @git, qw(write-tree --prefix=debian/patches/);
runcmd @git, qw(read-tree), $head;
- read_tree_subdir 'debian/patches', $ptree;
+ if ($ptree) {
+ read_tree_subdir 'debian/patches', $ptree;
+ } else {
+ rm_subdir_cached 'debian/patches';
+ }
$out = make_commit [$head], [
- 'Commit patch queue (exported by git-debrebase)',
- '[git-debrebase: export and commit patches]',
+ (__ 'Commit patch queue (exported by git-debrebase)'),
+ '[git-debrebase make-patches: export and commit patches]',
];
};
return $out;
sub cmd_make_patches () {
my $opt_quiet_would_amend;
- GetOptions('quiet-would-amend!', \$opt_quiet_would_amend)
- or die badusage("bad options to make-patches");
- badusage "no arguments allowed" if @ARGV;
+ getoptions("make-patches",
+ 'quiet-would-amend!', \$opt_quiet_would_amend);
+ badusage __ "no arguments allowed" if @ARGV;
+ bail_if_rebasing();
my $old_head = get_head();
my $new = make_patches $old_head;
my $d = get_differs $old_head, $new;
if ($d == 0) {
- fail "No (more) patches to export." unless $opt_noop_ok;
+ fail __ "No (more) patches to export." unless $opt_noop_ok;
return;
} elsif ($d == D_PAT_ADD) {
snags_maybe_bail();
update_head_checkout $old_head, $new, 'make-patches';
} else {
- print STDERR failmsg
+ print STDERR failmsg f_
"Patch export produced patch amendments".
- " (abandoned output commit $new).".
- " Try laundering first."
+ " (abandoned output commit %s).".
+ " Try laundering first.",
+ $new
unless $opt_quiet_would_amend;
finish 7;
}
}
+sub check_series_has_all_patches ($) {
+ my ($head) = @_;
+ my $seriesfn = 'debian/patches/series';
+ my ($dummy, $series) = git_cat_file "$head:$seriesfn",
+ [qw(blob missing)];
+ $series //= '';
+ my %series;
+ our $comments_snagged;
+ foreach my $f (grep /\S/, grep {!m/^\s\#/} split /\n/, $series) {
+ if ($f =~ m/^\s*\#/) {
+ snag 'series-comments', f_
+ "%s contains comments, which will be discarded",
+ $seriesfn
+ unless $comments_snagged++;
+ next;
+ }
+ fail f_ "patch %s repeated in %s !", $f, $seriesfn if $series{$f}++;
+ }
+ foreach my $patchfile (get_tree "$head:debian/patches", 1,1) {
+ my ($f,$i) = @$patchfile;
+ next if $series{$f};
+ next if $f eq 'series';
+ snag 'unused-patches', f_
+ "Unused patch file %s will be discarded", $f;
+ }
+}
+
+sub begin_convert_from () {
+ my $head = get_head();
+ my ($ffqs, $ffqm, $symref, $ffq_prev, $gdrlast) = ffq_prev_branchinfo();
+
+ fail __ "ffq-prev exists, this is already managed by git-debrebase!"
+ if $ffq_prev && git_get_ref $ffq_prev;
+
+ my $gdrlast_obj = $gdrlast && git_get_ref $gdrlast;
+ snag 'already-converted', __
+ "ahead of debrebase-last, this is already managed by git-debrebase!"
+ if $gdrlast_obj && is_fast_fwd $gdrlast_obj, $head;
+ return ($head, { LastRef => $gdrlast, LastObj => $gdrlast_obj });
+}
+
+sub complete_convert_from ($$$$) {
+ my ($old_head, $new_head, $gi, $mrest) = @_;
+ ffq_check $new_head;
+ record_gdrlast $gi->{LastRef}, $new_head, $gi->{LastObj}
+ if $gi->{LastRef};
+ snags_maybe_bail();
+ update_head_checkout $old_head, $new_head, $mrest;
+}
+
sub cmd_convert_from_gbp () {
- badusage "needs 1 optional argument, the upstream git rev"
+ badusage __ "want only 1 optional argument, the upstream git commitish"
unless @ARGV<=1;
+
+ my $clogp = parsechangelog();
+ my $version = $clogp->{'Version'}
+ // fail __ "missing Version from changelog\n";
+
my ($upstream_spec) = @ARGV;
- $upstream_spec //= 'refs/heads/upstream';
- my $upstream = git_rev_parse $upstream_spec;
- my $old_head = get_head();
+
+ my $upstream_version = upstreamversion $version;
+ my $upstream =
+ resolve_upstream_version($upstream_spec, $upstream_version);
+
+ my ($old_head, $gdrlastinfo) = begin_convert_from();
my $upsdiff = get_differs $upstream, $old_head;
if ($upsdiff & D_UPS) {
- runcmd @git, qw(--no-pager diff),
+ runcmd @git, qw(--no-pager diff --stat),
$upstream, $old_head,
qw( -- :!/debian :/);
- fail "upstream ($upstream_spec) and HEAD are not identical in upstream files";
+ fail f_ <<END, $upstream_spec, $upstream_spec;
+upstream (%s) and HEAD are not
+identical in upstream files. See diffstat above, or run
+ git diff %s HEAD -- :!/debian :/
+END
}
if (!is_fast_fwd $upstream, $old_head) {
snag 'upstream-not-ancestor',
- "upstream ($upstream) is not an ancestor of HEAD";
+ f_ "upstream (%s) is not an ancestor of HEAD", $upstream;
} else {
my $wrong = cmdoutput
(@git, qw(rev-list --ancestry-path), "$upstream..HEAD",
qw(-- :/ :!/debian));
if (length $wrong) {
- snag 'unexpected-upstream-changes',
- "history between upstream ($upstream) and HEAD contains direct changes to upstream files - are you sure this is a gbp (patches-unapplied) branch?";
- print STDERR "list expected changes with: git log --stat --ancestry-path $upstream_spec..HEAD -- :/ ':!/debian'\n";
+ snag 'unexpected-upstream-changes', f_
+ "history between upstream (%s) and HEAD contains direct changes to upstream files - are you sure this is a gbp (patches-unapplied) branch?",
+ $upstream;
+ print STDERR f_ "list expected changes with: %s\n",
+ "git log --stat --ancestry-path $upstream_spec..HEAD -- :/ ':!/debian'";
}
}
if ((git_cat_file "$upstream:debian")[0] ne 'missing') {
snag 'upstream-has-debian',
- "upstream ($upstream) contains debian/ directory";
+ f_ "upstream (%s) contains debian/ directory", $upstream;
}
- snags_maybe_bail();
+ check_series_has_all_patches $old_head;
+
+ my $previous_dgit_view = eval {
+ my @clogcmd = qw(dpkg-parsechangelog --format rfc822 -n2);
+ my ($lvsn, $suite);
+ parsechangelog_loop \@clogcmd, 'debian/changelog', sub {
+ my ($stz, $desc) = @_;
+ no warnings qw(exiting);
+ printdebug 'CHANGELOG ', Dumper($desc, $stz);
+ next unless $stz->{Date};
+ next unless $stz->{Distribution} ne 'UNRELEASED';
+ $lvsn = $stz->{Version};
+ $suite = $stz->{Distribution};
+ last;
+ };
+ die __ "neither of the first two changelog entries are released\n"
+ unless defined $lvsn;
+ print "last finished-looking changelog entry: ($lvsn) $suite\n";
+ my $mtag_pat = debiantag_maintview $lvsn, '*';
+ my $mtag = cmdoutput @git, qw(describe --always --abbrev=0 --match),
+ $mtag_pat;
+ die f_ "could not find suitable maintainer view tag %s\n", $mtag_pat
+ unless $mtag =~ m{/};
+ is_fast_fwd $mtag, 'HEAD' or
+ die f_ "HEAD is not FF from maintainer tag %s!", $mtag;
+ my $dtag = "archive/$mtag";
+ git_get_ref "refs/tags/$dtag" or
+ die f_ "dgit view tag %s not found\n", $dtag;
+ is_fast_fwd $mtag, $dtag or
+ die f_ "dgit view tag %s is not FF from maintainer tag %s\n",
+ $dtag, $mtag;
+ print f_ "will stitch in dgit view, %s\n", $dtag;
+ git_rev_parse $dtag;
+ };
+ if (!$previous_dgit_view) {
+ $@ =~ s/^\n+//;
+ chomp $@;
+ print STDERR f_ <<END, "$@";
+Cannot confirm dgit view: %s
+Failed to stitch in dgit view (see messages above).
+dgit --overwrite will be needed on the first dgit push after conversion.
+END
+ }
+
+ snags_maybe_bail_early();
my $work;
runcmd @git, qw(reset --quiet --hard patch-queue/gdr-internal);
runcmd @git, qw(rebase --quiet --onto), $work, qw(gdr-internal);
$work = git_rev_parse 'HEAD';
+
+ if ($previous_dgit_view) {
+ $work = make_commit [$work, $previous_dgit_view], [
+ 'git-debrebase import: declare ff from dgit archive view',
+ '[git-debrebase pseudomerge: import-from-gbp]',
+ ];
+ }
};
- update_head_checkout $old_head, $work, 'convert-from-gbp';
+ complete_convert_from $old_head, $work, $gdrlastinfo, 'convert-from-gbp';
+ print f_ <<END, $us or confess $!;
+%s: converted from patched-unapplied (gbp) branch format, OK
+END
}
sub cmd_convert_to_gbp () {
badusage "no arguments allowed" if @ARGV;
my $head = get_head();
my (undef, undef, undef, $ffq, $gdrlast) = ffq_prev_branchinfo();
- keycommits $head, 0;
- my $out;
- make_patches_staged $head;
- in_workarea sub {
- $out = make_commit ['HEAD'], [
- 'Commit patch queue (converted from git-debrebase format)',
- '[git-debrebase convert-to-gbp: commit patches]',
- ];
- };
+ my ($anchor, $breakwater) = keycommits $head, 0;
+ my $out = $breakwater;
+ my $any = make_patches_staged $head;
+ if ($any) {
+ in_workarea sub {
+ $out = make_commit [$out], [
+ 'Commit patch queue (converted from git-debrebase format)',
+ '[git-debrebase convert-to-gbp: commit patches]',
+ ];
+ };
+ } else {
+ # in this case, it can be fast forward
+ $out = $head;
+ }
if (defined $ffq) {
push @deferred_updates, "delete $ffq";
push @deferred_updates, "delete $gdrlast";
}
snags_maybe_bail();
update_head_checkout $head, $out, "convert to gbp (v0)";
- print <<END or die $!;
-git-debrebase: converted to git-buildpackage branch format
-git-debrebase: WARNING: do not now run "git-debrebase" any more
-git-debrebase: WARNING: doing so would drop all upstream patches!
+ print f_ <<END, $us,$us,$us or confess $!;
+%s: converted to git-buildpackage branch format
+%s: WARNING: do not now run "git-debrebase" any more
+%s: WARNING: doing so would drop all upstream patches!
+END
+}
+
+sub cmd_convert_from_dgit_view () {
+ my $clogp = parsechangelog();
+
+ my $bpd = (cfg 'dgit.default.build-products-dir',1) // '..';
+ my $do_origs = 1;
+ my $do_tags = 1;
+ my $always = 0;
+ my $diagnose = 0;
+
+ getoptions("convert-from-dgit-view",
+ 'diagnose!', \$diagnose,
+ 'build-products-dir:s', \$bpd,
+ 'origs!', \$do_origs,
+ 'tags!', \$do_tags,
+ 'always-convert-anyway!', \$always);
+ fail __ "takes 1 optional argument, the upstream commitish" if @ARGV>1;
+
+ my @upstreams;
+
+ if (@ARGV) {
+ my $spec = shift @ARGV;
+ my $commit = git_rev_parse "$spec^{commit}";
+ push @upstreams, { Commit => $commit,
+ Source => (f_ "%s, from command line", $ARGV[0]),
+ Only => 1,
+ };
+ }
+
+ my ($head, $gdrlastinfo) = begin_convert_from();
+
+ if (!$always) {
+ my $troubles = 0;
+ my $trouble = sub { $troubles++; };
+ keycommits $head, sub{}, sub{}, $trouble, $trouble;
+ printdebug "troubles=$troubles\n";
+ if (!$troubles) {
+ print STDERR f_ <<END, $us,$us,$us;
+%s: Branch already seems to be in git-debrebase format!
+%s: --always-convert-anyway would do the conversion operation anyway
+%s: but is probably a bad idea. Probably, you wanted to do nothing.
+END
+ fail __ "Branch already in git-debrebase format."
+ unless $opt_noop_ok;
+ finish 0;
+ }
+ }
+
+ check_series_has_all_patches $head;
+
+ snags_maybe_bail_early();
+
+ my $version = upstreamversion $clogp->{Version};
+ print STDERR __
+ "Considering possible commits corresponding to upstream:\n";
+
+ if (!@upstreams) {
+ if ($do_tags) {
+ my @tried;
+ my $ups_tag = upstream_commitish_search $version, \@tried;
+ if ($ups_tag) {
+ my $this = f_ "git tag %s", $tried[-1];
+ push @upstreams, { Commit => $ups_tag,
+ Source => $this,
+ };
+ } else {
+ print STDERR f_
+ " git tag: no suitable tag found (tried %s)\n",
+ "@tried";
+ }
+ }
+ if ($do_origs) {
+ my $p = $clogp->{'Source'};
+ # we do a quick check to see if there are plausible origs
+ my $something=0;
+ if (!opendir BPD, $bpd) {
+ die f_ "opendir build-products-dir %s: %s", $bpd, $!
+ unless $!==ENOENT;
+ } else {
+ while ($!=0, my $f = readdir BPD) {
+ next unless is_orig_file_of_p_v $f, $p, $version;
+ print STDERR f_
+ " orig: found what looks like a .orig, %s\n",
+ "$bpd/$f";
+ $something=1;
+ last;
+ }
+ confess "read $bpd: $!" if $!;
+ closedir BPD;
+ }
+ if ($something) {
+ my $tree = cmdoutput
+ @dgit, qw(--build-products-dir), $bpd,
+ qw(print-unapplied-treeish);
+ fresh_workarea();
+ in_workarea sub {
+ runcmd @git, qw(reset --quiet), $tree, qw(-- .);
+ rm_subdir_cached 'debian';
+ $tree = cmdoutput @git, qw(write-tree);
+ my $ups_synth = make_commit [], [ <<END, <<END,
+Import effective orig tree for upstream version $version
END
+This includes the contents of the .orig(s), minus any debian/ directory.
+
+[git-debrebase convert-from-dgit-view upstream-import-convert: $version]
+END
+ ];
+ push @upstreams, { Commit => $ups_synth,
+ Source => "orig(s) imported via dgit",
+ };
+ }
+ } else {
+ print STDERR f_
+ " orig: no suitable origs found (looked for %s in %s)\n",
+ "${p}_".(stripeoch $version)."...", $bpd;
+ }
+ }
+ }
+
+ my $some_patches = stat_exists 'debian/patches/series';
+
+ print STDERR __
+ "Evaluating possible commits corresponding to upstream:\n";
+
+ my $result;
+ foreach my $u (@upstreams) {
+ my $work = $head;
+ fresh_workarea();
+ in_workarea sub {
+ runcmd @git, qw(reset --quiet), $u->{Commit}, qw(-- .);
+ runcmd @git, qw(checkout), $u->{Commit}, qw(-- .);
+ runcmd @git, qw(clean -xdff);
+ runcmd @git, qw(checkout), $head, qw(-- debian);
+ if ($some_patches) {
+ rm_subdir_cached 'debian/patches';
+ $work = make_commit [ $work ], [
+ 'git-debrebase convert-from-dgit-view: drop upstream changes from breakwater',
+ "Drop upstream changes, and delete debian/patches, as part of converting\n".
+ "to git-debrebase format. Upstream changes will appear as commits.",
+ '[git-debrebase convert-from-dgit-view drop-patches]'
+ ];
+ }
+ $work = make_commit [ $work, $u->{Commit} ], [
+ 'git-debrebase convert-from-dgit-view: declare upstream',
+ '(Re)constructed breakwater merge.',
+ '[git-debrebase anchor: declare upstream]'
+ ];
+ runcmd @git, qw(checkout --quiet -b mk), $work;
+ if ($some_patches) {
+ runcmd @git, qw(checkout), $head, qw(-- debian/patches);
+ runcmd @git, qw(reset --quiet);
+ my @gbp_cmd = (qw(gbp pq import));
+ if (!$diagnose) {
+ my $gbp_err = "../gbp-pq-err";
+ @gbp_cmd = shell_cmd "exec >$gbp_err 2>&1", @gbp_cmd;
+ }
+ my $r = system @gbp_cmd;
+ if ($r) {
+ print STDERR f_
+ " %s: couldn't apply patches: gbp pq %s",
+ $u->{Source}, waitstatusmsg();
+ return;
+ }
+ }
+ my $work = git_rev_parse qw(HEAD);
+ my $diffout = cmdoutput @git, qw(diff-tree --stat HEAD), $work;
+ if (length $diffout) {
+ print STDERR f_
+ " %s: applying patches gives different tree\n",
+ $u->{Source};
+ print STDERR $diffout if $diagnose;
+ return;
+ }
+ # OMG!
+ $u->{Result} = $work;
+ $result = $u;
+ };
+ last if $result;
+ }
+
+ if (!$result) {
+ fail __ <<END;
+Could not find or construct a suitable upstream commit.
+Rerun adding --diagnose after convert-from-dgit-view, or pass a
+upstream commmit explicitly or provide suitable origs.
+END
+ }
+
+ print STDERR f_ "Yes, will base new branch on %s\n", $result->{Source};
+
+ complete_convert_from $head, $result->{Result}, $gdrlastinfo,
+ 'convert-from-dgit-view';
+}
+
+sub cmd_forget_was_ever_debrebase () {
+ badusage __ "forget-was-ever-debrebase takes no further arguments"
+ if @ARGV;
+ my ($ffqstatus, $ffq_msg, $current, $ffq_prev, $gdrlast) =
+ ffq_prev_branchinfo();
+ fail f_ "Not suitable for recording git-debrebaseness anyway: %s",
+ $ffq_msg
+ if defined $ffq_msg;
+ push @deferred_updates, "delete $ffq_prev";
+ push @deferred_updates, "delete $gdrlast";
+ snags_maybe_bail();
+ run_deferred_updates "forget-was-ever-debrebase";
+}
+
+sub cmd_record_resolved_merge () {
+ badusage "record-resolved-merge takes no further arguments" if @ARGV;
+ # MERGE-TODO needs documentation
+ 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) = @_;
+ reflog_cache_insert $merge_cache_ref, $key, $ref;
+ print "OK. You can switch branches and try git-debrebase again.\n";
+ 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 () {
}
}
-GetOptions("D+" => \$debuglevel,
+setlocale(LC_MESSAGES, "");
+textdomain("git-debrebase");
+
+getoptions_main
+ (__ "bad options\n",
+ "D+" => \$debuglevel,
'noop-ok', => \$opt_noop_ok,
'f=s' => \@snag_force_opts,
'anchor=s' => \@opt_anchors,
+ '--dgit=s' => \($dgit[0]),
'force!',
+ 'experimental-merge-resolution!', \$opt_merges,
'-i:s' => sub {
my ($opt,$val) = @_;
- badusage "git-debrebase: no cuddling to -i for git-rebase"
+ badusage f_ "%s: no cuddling to -i for git-rebase", $us
if length $val;
- die if $opt_defaultcmd_interactive; # should not happen
+ confess if $opt_defaultcmd_interactive; # should not happen
$opt_defaultcmd_interactive = [ qw(-i) ];
# This access to @ARGV is excessive familiarity with
# Getopt::Long, but there isn't another sensible
# approach. '-i=s{0,}' does not work with bundling.
push @$opt_defaultcmd_interactive, @ARGV;
@ARGV=();
- }) or die badusage "bad options\n";
+ },
+ 'help' => sub { print __ $usage_message or confess $!; finish 0; },
+ );
+
initdebug('git-debrebase ');
enabledebug if $debuglevel;
my $toplevel = cmdoutput @git, qw(rev-parse --show-toplevel);
-chdir $toplevel or die "chdir $toplevel: $!";
+chdir $toplevel or fail f_ "chdir toplevel %s: %s\n", $toplevel, $!;
$rd = fresh_playground "$playprefix/misc";
$cmdfn =~ y/-/_/;
$cmdfn = ${*::}{"cmd_$cmdfn"};
- $cmdfn or badusage "unknown git-debrebase sub-operation $cmd";
+ $cmdfn or badusage f_ "unknown git-debrebase sub-operation %s", $cmd;
$cmdfn->();
}