187 lines
3.5 KiB
Perl
Executable File
187 lines
3.5 KiB
Perl
Executable File
#!/usr/bin/perl -w
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#
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# Copyright (c) 2005 Junio C Hamano
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#
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# Read .git/FETCH_HEAD and make a human readable merge message
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# by grouping branches and tags together to form a single line.
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unshift @INC, '@@INSTLIBDIR@@';
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use strict;
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use Git;
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use Error qw(:try);
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my $repo = Git->repository();
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my @src;
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my %src;
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sub andjoin {
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my ($label, $labels, $stuff) = @_;
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my $l = scalar @$stuff;
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my $m = '';
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if ($l == 0) {
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return ();
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}
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if ($l == 1) {
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$m = "$label$stuff->[0]";
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}
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else {
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$m = ("$labels" .
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join (', ', @{$stuff}[0..$l-2]) .
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" and $stuff->[-1]");
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}
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return ($m);
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}
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sub repoconfig {
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my $val;
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try {
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$val = $repo->command_oneline('repo-config', '--get', 'merge.summary');
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} catch Git::Error::Command with {
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my ($E) = shift;
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if ($E->value() == 1) {
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return undef;
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} else {
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throw $E;
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}
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};
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return $val;
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}
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sub current_branch {
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my ($bra) = $repo->command_oneline('symbolic-ref', 'HEAD');
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$bra =~ s|^refs/heads/||;
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if ($bra ne 'master') {
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$bra = " into $bra";
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} else {
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$bra = "";
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}
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return $bra;
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}
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sub shortlog {
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my ($tip) = @_;
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my @result;
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foreach ($repo->command('log', '--no-merges', '--topo-order', '--pretty=oneline', $tip, '^HEAD')) {
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s/^[0-9a-f]{40}\s+//;
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push @result, $_;
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}
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return @result;
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}
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my @origin = ();
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while (<>) {
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my ($bname, $tname, $gname, $src, $sha1, $origin);
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chomp;
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s/^([0-9a-f]*) //;
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$sha1 = $1;
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next if (/^not-for-merge/);
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s/^ //;
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if (s/ of (.*)$//) {
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$src = $1;
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} else {
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# Pulling HEAD
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$src = $_;
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$_ = 'HEAD';
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}
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if (! exists $src{$src}) {
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push @src, $src;
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$src{$src} = {
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BRANCH => [],
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TAG => [],
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R_BRANCH => [],
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GENERIC => [],
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# &1 == has HEAD.
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# &2 == has others.
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HEAD_STATUS => 0,
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};
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}
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if (/^branch (.*)$/) {
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$origin = $1;
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push @{$src{$src}{BRANCH}}, $1;
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$src{$src}{HEAD_STATUS} |= 2;
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}
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elsif (/^tag (.*)$/) {
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$origin = $_;
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push @{$src{$src}{TAG}}, $1;
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$src{$src}{HEAD_STATUS} |= 2;
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}
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elsif (/^remote branch (.*)$/) {
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$origin = $1;
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push @{$src{$src}{R_BRANCH}}, $1;
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$src{$src}{HEAD_STATUS} |= 2;
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}
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elsif (/^HEAD$/) {
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$origin = $src;
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$src{$src}{HEAD_STATUS} |= 1;
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}
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else {
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push @{$src{$src}{GENERIC}}, $_;
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$src{$src}{HEAD_STATUS} |= 2;
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$origin = $src;
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}
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if ($src eq '.' || $src eq $origin) {
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$origin =~ s/^'(.*)'$/$1/;
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push @origin, [$sha1, "$origin"];
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}
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else {
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push @origin, [$sha1, "$origin of $src"];
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}
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}
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my @msg;
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for my $src (@src) {
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if ($src{$src}{HEAD_STATUS} == 1) {
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# Only HEAD is fetched, nothing else.
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push @msg, $src;
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next;
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}
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my @this;
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if ($src{$src}{HEAD_STATUS} == 3) {
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# HEAD is fetched among others.
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push @this, andjoin('', '', ['HEAD']);
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}
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push @this, andjoin("branch ", "branches ",
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$src{$src}{BRANCH});
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push @this, andjoin("remote branch ", "remote branches ",
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$src{$src}{R_BRANCH});
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push @this, andjoin("tag ", "tags ",
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$src{$src}{TAG});
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push @this, andjoin("commit ", "commits ",
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$src{$src}{GENERIC});
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my $this = join(', ', @this);
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if ($src ne '.') {
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$this .= " of $src";
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}
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push @msg, $this;
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}
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my $into = current_branch();
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print "Merge ", join("; ", @msg), $into, "\n";
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if (!repoconfig) {
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exit(0);
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}
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# We limit the merge message to the latst 20 or so per each branch.
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my $limit = 20;
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for (@origin) {
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my ($sha1, $name) = @$_;
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my @log = shortlog($sha1);
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if ($limit + 1 <= @log) {
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print "\n* $name: (" . scalar(@log) . " commits)\n";
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}
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else {
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print "\n* $name:\n";
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}
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my $cnt = 0;
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for my $log (@log) {
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if ($limit < ++$cnt) {
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print " ...\n";
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last;
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}
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print " $log\n";
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}
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}
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