X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=git-debrebase;h=b61970ce2f57bbef33a8915334a12a73e0272d28;hb=7bed50ebbcdf503896de776c0c70656b3dfeea7e;hp=866b0ded6cfe06bc30469ca01935f805b62f306d;hpb=9bab0fa49d1ed2d47a3a02ab9c4db1d721b8752e;p=dgit.git
diff --git a/git-debrebase b/git-debrebase
index 866b0ded..b61970ce 100755
--- a/git-debrebase
+++ b/git-debrebase
@@ -18,6 +18,10 @@
# You should have received a copy of the GNU General Public License
# along with this program. If not, see .
+END { $? = $Debian::Dgit::ExitStatus::desired // -1; };
+use Debian::Dgit::GDR;
+use Debian::Dgit::ExitStatus;
+
use strict;
use Debian::Dgit qw(:DEFAULT :playground);
@@ -30,14 +34,37 @@ use Data::Dumper;
use Getopt::Long qw(:config posix_default gnu_compat bundling);
use Dpkg::Version;
use File::FnMatch qw(:fnmatch);
+use File::Copy;
+
+our ($usage_message) = <<'END';
+usages:
+ git-debrebase [] [--|-i ]
+ git-debrebase [] status
+ git-debrebase [] prepush [--prose=...]
+ git-debrebase [] quick|conclude
+ git-debrebase [] new-upstream []
+ git-debrebase [] convert-from-gbp []
+ ...
+See git-debrebase(1), git-debrebase(5), dgit-maint-debrebase(7) (in dgit).
+END
our ($opt_force, $opt_noop_ok, @opt_anchors);
+our ($opt_defaultcmd_interactive);
our $us = qw(git-debrebase);
+$|=1;
+
sub badusage ($) {
my ($m) = @_;
- die "bad usage: $m\n";
+ print STDERR "$us: bad usage: $m\n";
+ finish 8;
+}
+
+sub getoptions {
+ my $m = shift;
+ local $SIG{__WARN__}; # GetOptions calls `warn' to print messages
+ GetOptions @_ or badusage $m;
}
sub cfg ($;$) {
@@ -97,13 +124,21 @@ sub fresh_workarea () {
in_workarea sub { playtree_setup };
}
+our $snags_forced = 0;
+our $snags_tripped = 0;
+our $snags_summarised = 0;
our @deferred_updates;
our @deferred_update_messages;
+sub all_snags_summarised () {
+ $snags_forced + $snags_tripped == $snags_summarised;
+}
sub run_deferred_updates ($) {
my ($mrest) = @_;
- my @upd_cmd = (@git, qw(update-ref --stdin -m), "debrebase: $mrest");
+ confess 'dangerous internal error' unless all_snags_summarised();
+
+ my @upd_cmd = (git_update_ref_cmd "debrebase: $mrest", qw(--stdin));
debugcmd '>|', @upd_cmd;
open U, "|-", @upd_cmd or die $!;
foreach (@deferred_updates) {
@@ -224,40 +259,50 @@ sub make_commit ($$) {
return cmdoutput @cmd;
}
-our @fproblem_force_opts;
-our $fproblems_forced;
-our $fproblems_tripped;
-sub fproblem ($$) {
- my ($tag,$msg) = @_;
- if (grep { $_ eq $tag } @fproblem_force_opts) {
- $fproblems_forced++;
- print STDERR "git-debrebase: safety catch overridden (-f$tag): $msg\n";
+our @snag_force_opts;
+sub snag ($$;@) {
+ 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";
} else {
- $fproblems_tripped++;
- print STDERR "git-debrebase: safety catch tripped (-f$tag): $msg\n";
+ $snags_tripped++;
+ print STDERR "git-debrebase: snag detected (-f$tag): $msg\n";
}
}
-sub fproblems_maybe_bail () {
- if ($fproblems_forced) {
+# Important: all mainline code must call snags_maybe_bail after
+# any point where snag might be called, but before making changes
+# (eg before any call to run_deferred_updates). snags_maybe_bail
+# may be called more than once if necessary (but this is not ideal
+# because then the messages about number of snags may be confusing).
+sub snags_maybe_bail () {
+ return if all_snags_summarised();
+ if ($snags_forced) {
printf STDERR
- "%s: safety catch trips: %d overriden by individual -f options\n",
- $us, $fproblems_forced;
+ "%s: snags: %d overriden by individual -f options\n",
+ $us, $snags_forced;
}
- if ($fproblems_tripped) {
+ if ($snags_tripped) {
if ($opt_force) {
printf STDERR
- "%s: safety catch trips: %d overriden by global --force\n",
- $us, $fproblems_tripped;
+ "%s: snags: %d overriden by global --force\n",
+ $us, $snags_tripped;
} else {
fail sprintf
- "%s: safety catch trips: %d blockers (you could -f, or --force)",
- $us, $fproblems_tripped;
+ "%s: snags: %d blocker(s) (you could -f, or --force)",
+ $us, $snags_tripped;
}
}
+ $snags_summarised = $snags_forced + $snags_tripped;
}
-sub any_fproblems () {
- return $fproblems_forced || $fproblems_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;
}
# classify returns an info hash like this
@@ -394,6 +439,15 @@ sub classify ($) {
# BreakwaterStart commits are also anchors in the terminology
# of git-debrebase(5), but they are untagged (and always
# manually generated).
+ #
+ # We cannot not tolerate any tagged linear commit (ie,
+ # BreakwaterStart commits tagged `[anchor:') because such a
+ # thing could result from an erroneous linearising raw git
+ # rebase of a merge anchor. That would represent a corruption
+ # of the branch. and we want to detect and reject the results
+ # of such corruption before it makes it out anywhere. If we
+ # 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");
@@ -406,6 +460,23 @@ sub classify ($) {
# way also there's also an easy rune to look for the upstream
# patches (--topo-order).
+ # Also this makes --first-parent be slightly more likely to
+ # be useful - it makes it provide a linearised breakwater history.
+
+ # Of course one can say somthing like
+ # gitk -- ':/' ':!/debian'
+ # to get _just_ the commits touching upstream files, and by
+ # the TREESAME logic in git-rev-list this will leave the
+ # breakwater into upstream at the first anchor. But that
+ # doesn't report debian/ changes at all.
+
+ # Other observations about gitk: by default, gitk seems to
+ # produce output in a different order to git-rev-list. I
+ # can't seem to find this documented anywhere. gitk
+ # --date-order DTRT. But, gitk always seems to put the
+ # 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[1]{Differs} & ~DS_DEB and
$badanchor->("upstream files differ from left parent");
@@ -494,20 +565,22 @@ sub classify ($) {
return $unknown->("complex merge");
}
-sub keycommits ($;$$$) {
- my ($head, $furniture, $unclean, $trouble) = @_;
+sub keycommits ($;$$$$) {
+ my ($head, $furniture, $unclean, $trouble, $fatal) = @_;
# => ($anchor, $breakwater)
- # $unclean->("unclean-$tagsfx", $msg)
- # $furniture->("unclean-$tagsfx", $msg)
- # $dgitimport->("unclean-$tagsfx", $msg)
+ # $unclean->("unclean-$tagsfx", $msg, $cl)
+ # $furniture->("unclean-$tagsfx", $msg, $cl)
+ # $dgitimport->("unclean-$tagsfx", $msg, $cl))
# is callled for each situation or commit that
# wouldn't be found in a laundered branch
- # $furniture is forfurniture commits such as might be found on an
+ # $furniture is for furniture commits such as might be found on an
# interchange branch (pseudomerge, d/patches, changelog)
# $trouble is for things whnich prevent the return of
# anchor and breakwater information; if that is ignored,
# then keycommits returns (undef, undef) instead.
+ # $fatal is for unprocessable commits, and should normally cause
+ # a failure. If ignored, agaion, (undef, undef) is returned.
#
# If a callback is undef, fail is called instead.
# If a callback is defined but false, the situation is ignored.
@@ -517,15 +590,18 @@ sub keycommits ($;$$$) {
my ($anchor, $breakwater);
my $clogonly;
+ my $cl;
+ $fatal //= sub { fail $_[1]; };
my $x = sub {
- my ($cb, $tagsfx, $why) = @_;
+ my ($cb, $tagsfx, $mainwhy, $xwhy) = @_;
+ my $why = $mainwhy.$xwhy;
my $m = "branch needs laundering (run git-debrebase): $why";
fail $m unless defined $cb;
return unless $cb;
- $cb->("unclean-$tagsfx", $why);
+ $cb->("unclean-$tagsfx", $why, $cl, $mainwhy);
};
for (;;) {
- my $cl = classify $head;
+ $cl = classify $head;
my $ty = $cl->{Type};
if ($ty eq 'Packaging') {
$breakwater //= $clogonly;
@@ -543,28 +619,28 @@ sub keycommits ($;$$$) {
last;
} elsif ($ty eq 'Upstream') {
$x->($unclean, 'ordering',
- "packaging change ($breakwater) follows upstream change (eg $head)")
+ "packaging change ($breakwater) follows upstream change"," (eg $head)")
if defined $breakwater;
$clogonly = undef;
$breakwater = undef;
} elsif ($ty eq 'Mixed') {
$x->($unclean, 'mixed',
- 'found mixed upstream/packaging commit ($head)');
+ "found mixed upstream/packaging commit"," ($head)");
$clogonly = undef;
$breakwater = undef;
} elsif ($ty eq 'Pseudomerge' or
$ty eq 'AddPatches') {
$x->($furniture, (lc $ty),
- "found interchange bureaucracy commit ($ty, $head)");
+ "found interchange bureaucracy commit ($ty)"," ($head)");
} elsif ($ty eq 'DgitImportUnpatched') {
$x->($trouble, 'dgitimport',
"found dgit dsc import ($head)");
- $breakwater = undef;
- $anchor = undef;
- no warnings qw(exiting);
- last;
+ return (undef,undef);
} else {
- fail "found unprocessable commit, cannot cope: $head; $cl->{Why}";
+ $x->($fatal, 'unprocessable',
+ "found unprocessable commit, cannot cope: $cl->{Why}",
+ " ($head)");
+ return (undef,undef);
}
$head = $cl->{Parents}[0]{CommitId};
}
@@ -621,10 +697,11 @@ sub walk ($;$$) {
if ($nogenerate) {
return (undef,undef);
}
- die "commit $cur: Cannot cope with this commit (d.".
+ fail "found unprocessable commit, cannot cope:".
+ (defined $cl->{Why} ? "; $cl->{Why}": '').
+ " (commit $cur) (d.".
(join ' ', map { sprintf "%#x", $_->{Differs} }
@{ $cl->{Parents} }).
- (defined $cl->{Why} ? "; $cl->{Why}": '').
")";
};
@@ -890,6 +967,7 @@ sub do_launder_head ($) {
my $old = get_head();
record_ffq_auto();
my ($tip,$breakwater) = walk $old;
+ snags_maybe_bail();
update_head_postlaunder $old, $tip, $reflogmsg;
return ($tip,$breakwater);
}
@@ -905,12 +983,14 @@ sub cmd_launder_v0 () {
}
sub defaultcmd_rebase () {
+ push @ARGV, @{ $opt_defaultcmd_interactive // [] };
my ($tip,$breakwater) = do_launder_head 'launder for rebase';
- runcmd @git, qw(rebase), @ARGV, $breakwater;
+ runcmd @git, qw(rebase), @ARGV, $breakwater if @ARGV;
}
sub cmd_analyse () {
- die if ($ARGV[0]//'') =~ m/^-/;
+ 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 $old) {
@@ -923,39 +1003,31 @@ sub cmd_analyse () {
}
sub ffq_prev_branchinfo () {
- # => ('status', "message", [$current, $ffq_prev, $gdrlast])
- # 'status' may be
- # branch message is undef
- # weird-symref } no $current,
- # notbranch } no $ffq_prev
my $current = git_get_symref();
- return ('detached', 'detached HEAD') unless defined $current;
- return ('weird-symref', 'HEAD symref is not to refs/')
- unless $current =~ m{^refs/};
- my $ffq_prev = "refs/$ffq_refprefix/$'";
- my $gdrlast = "refs/$gdrlast_refprefix/$'";
- printdebug "ffq_prev_branchinfo branch current $current\n";
- return ('branch', undef, $current, $ffq_prev, $gdrlast);
+ return gdr_ffq_prev_branchinfo($current);
}
-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 fproblem
- # 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 die $!; };
+ $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;
@@ -979,17 +1051,17 @@ sub record_ffq_prev_deferred () {
}
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->("OK, you are ahead of $lrref\n");
$checked{$lrref} = 1;
} elsif (is_fast_fwd $currentval, $lrval) {
$checked{$lrref} = -1;
- fproblem 'behind', "you are behind $lrref, divergence risk";
+ $notff->('behind', "you are behind $lrref, divergence risk");
} else {
$checked{$lrref} = -1;
- fproblem 'diverged', "you have diverged from $lrref";
+ $notff->('diverged', "you have diverged from $lrref");
}
};
@@ -1014,8 +1086,27 @@ sub record_ffq_prev_deferred () {
} elsif ($branch =~ m{^master$}) {
$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
+ my $currentval = get_head();
+
+ my ($status,$message, $ffq_prev,$gdrlast) = ffq_check $currentval;
+ return ($status,$message) if defined $status;
- fproblems_maybe_bail();
+ snags_maybe_bail();
push @deferred_updates, "update $ffq_prev $currentval $git_null_obj";
push @deferred_updates, "delete $gdrlast";
@@ -1027,11 +1118,23 @@ sub record_ffq_auto () {
my ($status, $message) = record_ffq_prev_deferred();
if ($status eq 'deferred' || $status eq 'exists') {
} else {
- fproblem $status, "could not record ffq-prev: $message";
- fproblems_maybe_bail();
+ snag $status, "could not record ffq-prev: $message";
+ snags_maybe_bail();
}
}
+sub ffq_prev_info () {
+ # => ($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";
+ snags_maybe_bail();
+ }
+ my $ffq_prev_commitish = $ffq_prev && git_get_ref $ffq_prev;
+ return ($ffq_prev, $gdrlast, $ffq_prev_commitish);
+}
+
sub stitch ($$$$$) {
my ($old_head, $ffq_prev, $gdrlast, $ffq_prev_commitish, $prose) = @_;
@@ -1051,15 +1154,59 @@ sub stitch ($$$$$) {
}
}
fresh_workarea();
+ # We make pseudomerges with L as the contributing parent.
+ # This makes git rev-list --first-parent work properly.
my $new_head = make_commit [ $old_head, $ffq_prev ], [
'Declare fast forward / record previous work',
- "[git-debrebase pseudomerge: stitch$prose]",
+ "[git-debrebase pseudomerge: $prose]",
];
push @deferred_updates, "update $gdrlast $new_head $git_null_obj";
- update_head $old_head, $new_head, "stitch";
+ update_head $old_head, $new_head, "stitch: $prose";
}
-sub cmd_new_upstream_v0 () {
+sub do_stitch ($;$) {
+ my ($prose, $unclean) = @_;
+
+ my ($ffq_prev, $gdrlast, $ffq_prev_commitish) = ffq_prev_info();
+ if (!$ffq_prev_commitish) {
+ fail "No ffq-prev to stitch." unless $opt_noop_ok;
+ return;
+ }
+ my $dangling_head = get_head();
+
+ keycommits $dangling_head, $unclean,$unclean,$unclean;
+ snags_maybe_bail();
+
+ stitch($dangling_head, $ffq_prev, $gdrlast, $ffq_prev_commitish, $prose);
+}
+
+sub resolve_upstream_version ($$) {
+ my ($new_upstream, $version) = @_;
+
+ my $new_upstream_version = "$version";
+ $new_upstream_version =~ s/-.*?$//;;
+
+ if (!defined $new_upstream) {
+ my @tried;
+ # todo: at some point maybe use git-deborig to do this
+ foreach my $tagpfx ('', 'v', 'upstream/') {
+ my $tag = $tagpfx.(dep14_version_mangle $new_upstream_version);
+ $new_upstream = git_get_ref "refs/tags/$tag";
+ last if length $new_upstream;
+ push @tried, $tag;
+ }
+ if (!length $new_upstream) {
+ fail "Could not determine appropriate upstream commitish.\n".
+ " (Tried these tags: @tried)\n".
+ " Check version, and specify upstream commitish explicitly.";
+ }
+ }
+ $new_upstream = git_rev_parse $new_upstream;
+
+ return ($new_upstream, $new_upstream_version);
+}
+
+sub cmd_new_upstream () {
# automatically and unconditionally launders before rebasing
# if rebase --abort is used, laundering has still been done
@@ -1068,10 +1215,17 @@ sub cmd_new_upstream_v0 () {
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 $spec_version, check => 1);
+ fail "bad version number \`$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 $new_upstream_version;
+ ($new_upstream, $new_upstream_version) =
+ resolve_upstream_version $new_upstream, $new_version;
record_ffq_auto();
@@ -1116,7 +1270,7 @@ sub cmd_new_upstream_v0 () {
my $old_anchor_cl = classify $old_anchor;
my $old_upstream;
if (!$old_anchor_cl->{OrigParents}) {
- fproblem 'anchor-treated',
+ snag 'anchor-treated',
'old anchor is recognised due to --anchor, cannot check upstream';
} else {
$old_upstream = parsecommit
@@ -1126,16 +1280,35 @@ sub cmd_new_upstream_v0 () {
if ($old_upstream && $old_upstream->{Msg} =~ m{^\[git-debrebase }m) {
if ($old_upstream->{Msg} =~
- m{^\[git-debrebase upstream-combine \.((?: $extra_orig_namepart_re)+)\:.*\]$}m
+ m{^\[git-debrebase upstream-combine (\.(?: $extra_orig_namepart_re)+)\:.*\]$}m
) {
- my @oldpieces = ('', split / /, $1);
- my $parentix = -1 + scalar @{ $old_upstream->{Parents} };
- foreach my $i (0..$#oldpieces) {
- my $n = $oldpieces[$i];
- $piece->($n, Old => $old_upstream->{CommitId}.'^'.$parentix);
+ my @oldpieces = (split / /, $1);
+ my $old_n_parents = scalar @{ $old_upstream->{Parents} };
+ if ($old_n_parents != @oldpieces &&
+ $old_n_parents != @oldpieces + 1) {
+ snag 'upstream-confusing', sprintf
+ "previous upstream combine %s".
+ " 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
+ "previous upstream combine %s".
+ " first piece is not \`.'",
+ $oldpieces[0];
+ } else {
+ $oldpieces[0] = '';
+ foreach my $i (0..$#oldpieces) {
+ my $n = $oldpieces[$i];
+ my $hat = 1 + $i + ($old_n_parents - @oldpieces);
+ $piece->($n, Old => $old_upstream->{CommitId}.'^'.$hat);
+ }
}
} else {
- fproblem 'upstream-confusing',
+ snag 'upstream-confusing',
"previous upstream $old_upstream->{CommitId} is from".
" git-debrebase but not an \`upstream-combine' commit";
}
@@ -1145,13 +1318,13 @@ sub cmd_new_upstream_v0 () {
if (!$old_upstream) {
# we have complained already
} elsif (!$pc->{Old}) {
- fproblem 'upstream-new-piece',
+ snag 'upstream-new-piece',
"introducing upstream piece \`$pc->{Name}'";
} elsif (!$pc->{New}) {
- fproblem 'upstream-rm-piece',
+ snag 'upstream-rm-piece',
"dropping upstream piece \`$pc->{Name}'";
} elsif (!is_fast_fwd $pc->{Old}, $pc->{New}) {
- fproblem 'upstream-not-ff',
+ snag 'upstream-not-ff',
"not fast forward: $pc->{Name} $pc->{Old}..$pc->{New}";
}
}
@@ -1159,7 +1332,7 @@ sub cmd_new_upstream_v0 () {
printdebug "%pieces = ", (dd \%pieces), "\n";
printdebug "\@newpieces = ", (dd \@newpieces), "\n";
- fproblems_maybe_bail();
+ snags_maybe_bail();
my $new_bw;
@@ -1167,7 +1340,7 @@ sub cmd_new_upstream_v0 () {
in_workarea sub {
my @upstream_merge_parents;
- if (!any_fproblems()) {
+ if (!any_snags()) {
push @upstream_merge_parents, $old_upstream->{CommitId};
}
@@ -1204,6 +1377,10 @@ sub cmd_new_upstream_v0 () {
"[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";
@@ -1220,7 +1397,7 @@ $p ($new_version) UNRELEASED; urgency=medium
* Update to new upstream version $new_upstream_version.
- --
+ -- $clogsignoff
END
close CN or die $!;
@@ -1241,6 +1418,8 @@ END
'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 $new_version: rebase";
runcmd @cmd;
# now it's for the user to sort out
}
@@ -1269,64 +1448,262 @@ sub cmd_breakwater () {
print "$bw\n" or die $!;
}
-sub cmd_stitch () {
- my $prose = '';
- GetOptions('prose=s', \$prose) or die badusage("bad options to stitch");
+sub cmd_status () {
badusage "no arguments allowed" if @ARGV;
- my ($status, $message, $current, $ffq_prev, $gdrlast)
- = ffq_prev_branchinfo();
- if ($status ne 'branch') {
- fproblem $status, "could not check ffq-prev: $message";
- fproblems_maybe_bail();
+
+ # 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 = { Badness => 0 };
+ my $newest;
+ my $note = sub {
+ my ($badness, $ourmsg, $snagname, $dummy, $cl, $kcmsg) = @_;
+ if ($oldest->{Badness} < $badness) {
+ $oldest = $newest = undef;
+ }
+ $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', @_); };
+
+ my $prcommitinfo = sub {
+ my ($cid) = @_;
+ flush STDOUT or die $!;
+ runcmd @git, qw(--no-pager log -n1),
+ '--pretty=format: %h %s%n',
+ $cid;
+ };
+
+ print "current branch contents, in git-debrebase terms:\n";
+ if (!$oldest->{Badness}) {
+ print " branch is laundered\n";
+ } else {
+ print " $oldest->{OurMsg}\n";
+ my $printed = '';
+ foreach my $info ($oldest, $newest) {
+ my $cid = $info->{CommitId};
+ next if $cid eq $printed;
+ $printed = $cid;
+ print " $info->{KcMsg}\n";
+ $prcommitinfo->($cid);
+ }
}
- my $ffq_prev_commitish = $ffq_prev && git_get_ref $ffq_prev;
+
+ my $prab = sub {
+ my ($cid, $what) = @_;
+ if (!defined $cid) {
+ print " $what is not well-defined\n";
+ } else {
+ print " $what\n";
+ $prcommitinfo->($cid);
+ }
+ };
+ print "key git-debrebase commits:\n";
+ $prab->($anchor, 'anchor');
+ $prab->($bw, 'breakwater');
+
+ my ($ffqstatus, $ffq_msg, $current, $ffq_prev, $gdrlast) =
+ ffq_prev_branchinfo();
+
+ print "branch and ref status, in git-debrebase terms:\n";
+ if ($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";
+ $prcommitinfo->($ffq_prev);
+ } elsif (!$gdrlast) {
+ print " stitched? (no record of git-debrebase work)\n";
+ } elsif (is_fast_fwd $gdrlast, 'HEAD') {
+ print " stitched\n";
+ } else {
+ print " not git-debrebase (diverged since last stitch)\n"
+ }
+ }
+}
+
+sub cmd_stitch () {
+ my $prose = 'stitch';
+ getoptions("bad options follow \`git-debrebase stitch'",
+ 'prose=s', \$prose);
+ badusage "no arguments allowed" if @ARGV;
+ do_stitch $prose, 0;
+}
+sub cmd_prepush () { cmd_stitch(); }
+
+sub cmd_quick () {
+ badusage "no arguments allowed" if @ARGV;
+ do_launder_head 'launder for git-debrebase quick';
+ do_stitch 'quick';
+}
+
+sub cmd_conclude () {
+ my ($ffq_prev, $gdrlast, $ffq_prev_commitish) = ffq_prev_info();
if (!$ffq_prev_commitish) {
- fail "No ffq-prev to stitch." unless $opt_noop_ok;
+ fail "No ongoing git-debrebase session." unless $opt_noop_ok;
return;
}
- my $old_head = get_head();
+ my $dangling_head = get_head();
+
+ badusage "no arguments allowed" if @ARGV;
+ do_launder_head 'launder for git-debrebase quick';
+ do_stitch 'quick';
+}
+
+sub make_patches_staged ($) {
+ 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();
+ in_workarea sub {
+ runcmd @git, qw(checkout -q -b bw), $secret_bw;
+ runcmd @git, qw(checkout -q -b patch-queue/bw), $secret_head;
+ 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;
+ }
+ runcmd @git, qw(add -f debian/patches);
+ };
+}
- keycommits $old_head, \&fproblem, \&fproblem, \&fproblem;
+sub make_patches ($) {
+ my ($head) = @_;
+ keycommits $head, 0, \&snag;
+ make_patches_staged $head;
+ my $out;
+ in_workarea sub {
+ my $ptree = cmdoutput @git, qw(write-tree --prefix=debian/patches/);
+ runcmd @git, qw(read-tree), $head;
+ read_tree_subdir 'debian/patches', $ptree;
+ $out = make_commit [$head], [
+ 'Commit patch queue (exported by git-debrebase)',
+ '[git-debrebase: export and commit patches]',
+ ];
+ };
+ return $out;
+}
- stitch($old_head, $ffq_prev, $gdrlast, $ffq_prev_commitish, $prose);
+sub cmd_make_patches () {
+ my $opt_quiet_would_amend;
+ getoptions("bad options follow \`git-debrebase make-patches'",
+ 'quiet-would-amend!', \$opt_quiet_would_amend);
+ badusage "no arguments allowed" if @ARGV;
+ 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 $opt_noop_ok;
+ return;
+ } elsif ($d == D_PAT_ADD) {
+ snags_maybe_bail();
+ update_head_checkout $old_head, $new, 'make-patches';
+ } else {
+ print STDERR failmsg
+ "Patch export produced patch amendments".
+ " (abandoned output commit $new).".
+ " Try laundering first."
+ unless $opt_quiet_would_amend;
+ finish 7;
+ }
}
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 = $clogp->{'Version'}
+ // die "missing Version from changelog";
+
my ($upstream_spec) = @ARGV;
- $upstream_spec //= 'refs/heads/upstream';
- my $upstream = git_rev_parse $upstream_spec;
+
+ my ($upstream, $upstream_version) =
+ resolve_upstream_version($upstream_spec, $version);
+
my $old_head = get_head();
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 <{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 "could not find suitable maintainer view tag $mtag_pat\n"
+ unless $mtag_pat =~ m{/};
+ is_fast_fwd $mtag, 'HEAD' or
+ die "HEAD is not FF from maintainer tag $mtag!";
+ my $dtag = "archive/$mtag";
+ is_fast_fwd $mtag, $dtag or
+ die "dgit view tag $dtag is not FF from maintainer tag $mtag";
+ print "will stitch in dgit view, $dtag\n";
+ git_rev_parse $dtag;
+ };
+ if (!$previous_dgit_view) {
+ $@ =~ s/^\n+//;
+ chomp $@;
+ print STDERR "cannot stitch in dgit view: $@\n";
+ }
+
+ snags_maybe_bail_early();
my $work;
@@ -1355,8 +1732,17 @@ sub cmd_convert_from_gbp () {
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]',
+ ];
+ }
};
+ ffq_check $work;
+ snags_maybe_bail();
update_head_checkout $old_head, $work, 'convert-from-gbp';
}
@@ -1364,14 +1750,10 @@ sub cmd_convert_to_gbp () {
badusage "no arguments allowed" if @ARGV;
my $head = get_head();
my (undef, undef, undef, $ffq, $gdrlast) = ffq_prev_branchinfo();
- my ($anchor, $bw) = keycommits $head, 0;
- fresh_workarea();
+ keycommits $head, 0;
my $out;
+ make_patches_staged $head;
in_workarea sub {
- runcmd @git, qw(checkout -q -b bw), $bw;
- runcmd @git, qw(checkout -q -b patch-queue/bw), $head;
- runcmd qw(gbp pq export);
- runcmd @git, qw(add debian/patches);
$out = make_commit ['HEAD'], [
'Commit patch queue (converted from git-debrebase format)',
'[git-debrebase convert-to-gbp: commit patches]',
@@ -1381,6 +1763,7 @@ sub cmd_convert_to_gbp () {
push @deferred_updates, "delete $ffq";
push @deferred_updates, "delete $gdrlast";
}
+ snags_maybe_bail();
update_head_checkout $head, $out, "convert to gbp (v0)";
print < \$debuglevel,
+getoptions("bad options\n",
+ "D+" => \$debuglevel,
'noop-ok', => \$opt_noop_ok,
- 'f=s' => \@fproblem_force_opts,
+ 'f=s' => \@snag_force_opts,
'anchor=s' => \@opt_anchors,
- 'force!') or die badusage "bad options\n";
+ 'force!',
+ '-i:s' => sub {
+ my ($opt,$val) = @_;
+ badusage "git-debrebase: no cuddling to -i for git-rebase"
+ if length $val;
+ die 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=();
+ },
+ 'help' => sub { print $usage_message or die $!; finish 0; },
+ );
+
initdebug('git-debrebase ');
enabledebug if $debuglevel;
@@ -1453,7 +1852,7 @@ $rd = fresh_playground "$playprefix/misc";
@opt_anchors = map { git_rev_parse $_ } @opt_anchors;
-if (!@ARGV || $ARGV[0] =~ m{^-}) {
+if (!@ARGV || $opt_defaultcmd_interactive || $ARGV[0] =~ m{^-}) {
defaultcmd_rebase();
} else {
my $cmd = shift @ARGV;
@@ -1464,3 +1863,5 @@ if (!@ARGV || $ARGV[0] =~ m{^-}) {
$cmdfn or badusage "unknown git-debrebase sub-operation $cmd";
$cmdfn->();
}
+
+finish 0;