use Carp;
use POSIX;
use Data::Dumper;
+use Getopt::Long qw(:config posix_default gnu_compat bundling);
-use Debian::Dgit qw(:DEFAULT $wa);
+use Debian::Dgit qw(:DEFAULT :playground);
sub badusage ($) {
my ($m) = @_;
sub get_commit ($) {
my ($objid) = @_;
- my ($type,$data) = git_cat_file $objid;
- die unless $type eq 'commit';
- $data =~ m/(?<=\n)\n/;
+ my $data = git_cat_file $objid, 'commit';
+ $data =~ m/(?<=\n)\n/ or die "$objid ($data) ?";
return ($`,$');
}
sub D_PAT_ADD () { return 0x4; } # debian/patches/ extra patches at end
sub D_PAT_OTH () { return 0x8; } # debian/patches other changes
-our $rd = ".git/git-debrebase";
-our $ud = "$rd/work";
+
+our $playprefix = 'debrebase';
+our $rd;
+our $workarea;
+
our @git = qw(git);
+sub in_workarea ($) {
+ my ($sub) = @_;
+ changedir $workarea;
+ my $r = eval { $sub->(); };
+ changedir $maindir;
+}
+
+sub fresh_workarea () {
+ $workarea = fresh_playground "$playprefix/work";
+ in_workarea sub { playtree_setup };
+}
+
+sub get_differs ($$) {
+ my ($x,$y) = @_;
+ # This resembles 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/.
+
+ my $differs = 0;
+
+ 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->(); }
+ };
+
+ $rundiff->([qw(--name-only)], [], sub {
+ $differs |= $_ eq 'debian' ? D_DEB : D_UPS;
+ });
+
+ if ($differs & D_DEB) {
+ $differs &= ~D_DEB;
+ $rundiff->([qw(--name-only -r)], [qw(debian)], sub {
+ $differs |= $_ eq m{^debian/patches/} ? D_PAT_OTH : D_DEB;
+ });
+ die "mysterious debian changes $x..$y"
+ unless $differs & (D_PAT_OTH|D_DEB);
+ }
+
+ if ($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;
+ }
+ 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
+ }
+ $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;
+
+ return $differs;
+}
+
sub commit_pr_info ($) {
my ($r) = @_;
return Data::Dumper->dump([$r], [qw(commit)]);
my ($h,$m) = get_commit $objid;
my ($t) = $h =~ m/^tree (\w+)$/m or die $objid;
- my (@ph) = $h =~ m/^parent (\w+)$/m;
+ my (@ph) = $h =~ m/^parent (\w+)$/mg;
my @p;
my $r = {
};
}
+ printdebug "classify $objid \$t=$t \@p",
+ (map { sprintf " %s/%#x", $_->{CommitId}, $_->{Differs} } @p),
+ "\n";
+
my $classify = sub {
my ($type, @rest) = @_;
$r = { %$r, Type => $type, @rest };
+ if ($debuglevel) {
+ my $dd = new Data::Dumper [ $r ];
+ Terse $dd 1; Indent $dd 0; Useqq $dd 1;
+ printdebug " = $type ".(Dump $dd)."\n";
+ }
return $r;
};
my $unknown = sub {
my ($why) = @_;
$r = { %$r, Type => qw(Unknown) };
+ printdebug " ** Unknown\n";
return $r;
};
Contributor => $bytime[1]);
}
foreach my $p (@p) {
- my ($p_h, $p_m) = get_commit $p;
+ my ($p_h, $p_m) = get_commit $p->{CommitId};
$p->{IsOrigin} = $p_h !~ m/^parent \w+$/m;
($p->{IsDgitImport},) = $p_m =~ m/^\[dgit import ([0-9a-z]+) .*\]$/m;
}
my ($stype, $series) = git_cat_file "$t:debian/patches/series";
my $haspatches = $stype ne 'missing' && $series =~ m/^\s*[^#\n\t ]/m;
+@p = reverse @p; #xxx
+
# How to decide about l/r ordering of breakwater merges ? git
# --topo-order prefers to expand 2nd parent first. There's
# already an easy rune to look for debian/ history anyway (git log
# debian/) so debian breakwater branch should be 1st parent; that
# way also there's also an easy rune to look for the upstream
# patches (--topo-order).
+
+ my $prevbrw = 0;
+
if (@p == 2 &&
!$haspatches &&
- !$p[0]{IsOrigin} && # breakwater merge never starts with an origin
- !($p[0]{Differs} & ~D_DEB) &&
- !($p[1]{Differs} & ~D_UPS)) {
+ !$p[$prevbrw]{IsOrigin} && # breakwater never starts with an origin
+ !($p[$prevbrw]{Differs} & ~D_DEB) &&
+ !($p[!$prevbrw]{Differs} & ~D_UPS)) {
return $classify->(qw(BreakwaterUpstreamMerge),
- OrigParents => [ $p[1] ]);
+ OrigParents => [ $p[!$prevbrw] ]);
}
# xxx multi-.orig upstreams
}
sub walk ($;$$);
-sub walk {
+sub walk ($;$$) {
my ($input,
$nogenerate,$report) = @_;
# => ($tip, $breakwater_tip)
$cur = $p0;
next;
} elsif ($ty eq 'Pseudomerge') {
- print $report " Contributor=$ty->{Contributor}" if $report;
+ my $contrib = $cl->{Contributor}{CommitId};
+ print $report " Contributor=$contrib" if $report;
push @pseudomerges, $cl;
$rewrite_from_here->();
- $cur = $ty->{Contributor};
+ $cur = $contrib;
next;
} elsif ($ty eq 'BreakwaterUpstreamMerge') {
$build_start->("PreviousBreakwater", $cur);
# Now we build it back up again
- workarea_fresh();
+ fresh_workarea();
my $rewriting = 0;
my $rm_tree_cached = sub {
my ($subdir) = @_;
- runcmd @git, qw(rm --quiet -rf --cached), $subdir;
+ runcmd @git, qw(rm --quiet -rf --cached --ignore-unmatch), $subdir;
};
my $read_tree_debian = sub {
my ($treeish) = @_;
sub get_head () { return git_rev_parse qw(HEAD); }
-sub update_head ($$) {
+sub update_head ($$$) {
my ($old, $new, $mrest) = @_;
runcmd @git, qw(update-ref -m), "git-debrebase $mrest", $new, $old;
}
sub cmd_launder () {
- badusage "no arguments to launder allowed";
+ badusage "no arguments to launder allowed" if @ARGV;
my $old = get_head();
my ($tip,$breakwater) = walk $old;
update_head $old, $tip, 'launder';
$old = get_head();
}
my ($dummy,$breakwater) = walk $old, 1,*STDOUT;
- print "$breakwater BREAKWATER\n";
STDOUT->error and die $!;
}
-my $toplevel = runcmd @git, qw(rev-parse --show-toplevel);
+GetOptions("D+" => \$debuglevel) or die badusage "bad options\n";
+initdebug('git-debrebase ');
+enabledebug if $debuglevel;
+
+my $toplevel = cmdoutput @git, qw(rev-parse --show-toplevel);
chdir $toplevel or die "chdir $toplevel: $!";
+$rd = fresh_playground "$playprefix/misc";
+
my $cmd = shift @ARGV;
my $cmdfn = $cmd;
$cmdfn =~ y/-/_/;
~ianmdlvl / dgit.git / blobdiff