[thirdparty/git.git] / git-remote.perl

#!/usr/bin/perl -w

use Git;
my $git = Git->repository();

sub add_remote_config {
	my ($hash, $name, $what, $value) = @_;
	if ($what eq 'url') {
		if (exists $hash->{$name}{'URL'}) {
			print STDERR "Warning: more than one remote.$name.url\n";
		}
		$hash->{$name}{'URL'} = $value;
	}
	elsif ($what eq 'fetch') {
		$hash->{$name}{'FETCH'} ||= [];
		push @{$hash->{$name}{'FETCH'}}, $value;
	}
	if (!exists $hash->{$name}{'SOURCE'}) {
		$hash->{$name}{'SOURCE'} = 'config';
	}
}

sub add_remote_remotes {
	my ($hash, $file, $name) = @_;

	if (exists $hash->{$name}) {
		$hash->{$name}{'WARNING'} = 'ignored due to config';
		return;
	}

	my $fh;
	if (!open($fh, '<', $file)) {
		print STDERR "Warning: cannot open $file\n";
		return;
	}
	my $it = { 'SOURCE' => 'remotes' };
	$hash->{$name} = $it;
	while (<$fh>) {
		chomp;
		if (/^URL:\s*(.*)$/) {
			# Having more than one is Ok -- it is used for push.
			if (! exists $it->{'URL'}) {
				$it->{'URL'} = $1;
			}
		}
		elsif (/^Push:\s*(.*)$/) {
			; # later
		}
		elsif (/^Pull:\s*(.*)$/) {
			$it->{'FETCH'} ||= [];
			push @{$it->{'FETCH'}}, $1;
		}
		elsif (/^\#/) {
			; # ignore
		}
		else {
			print STDERR "Warning: funny line in $file: $_\n";
		}
	}
	close($fh);
}

sub list_remote {
	my ($git) = @_;
	my %seen = ();
	my @remotes = eval {
		$git->command(qw(config --get-regexp), '^remote\.');
	};
	for (@remotes) {
		if (/^remote\.([^.]*)\.(\S*)\s+(.*)$/) {
			add_remote_config(\%seen, $1, $2, $3);
		}
	}

	my $dir = $git->repo_path() . "/remotes";
	if (opendir(my $dh, $dir)) {
		local $_;
		while ($_ = readdir($dh)) {
			chomp;
			next if (! -f "$dir/$_" || ! -r _);
			add_remote_remotes(\%seen, "$dir/$_", $_);
		}
	}

	return \%seen;
}

sub add_branch_config {
	my ($hash, $name, $what, $value) = @_;
	if ($what eq 'remote') {
		if (exists $hash->{$name}{'REMOTE'}) {
			print STDERR "Warning: more than one branch.$name.remote\n";
		}
		$hash->{$name}{'REMOTE'} = $value;
	}
	elsif ($what eq 'merge') {
		$hash->{$name}{'MERGE'} ||= [];
		push @{$hash->{$name}{'MERGE'}}, $value;
	}
}

sub list_branch {
	my ($git) = @_;
	my %seen = ();
	my @branches = eval {
		$git->command(qw(config --get-regexp), '^branch\.');
	};
	for (@branches) {
		if (/^branch\.([^.]*)\.(\S*)\s+(.*)$/) {
			add_branch_config(\%seen, $1, $2, $3);
		}
	}

	return \%seen;
}

my $remote = list_remote($git);
my $branch = list_branch($git);

sub update_ls_remote {
	my ($harder, $info) = @_;

	return if (($harder == 0) ||
		   (($harder == 1) && exists $info->{'LS_REMOTE'}));

	my @ref = map {
		s|^[0-9a-f]{40}\s+refs/heads/||;
		$_;
	} $git->command(qw(ls-remote --heads), $info->{'URL'});
	$info->{'LS_REMOTE'} = \@ref;
}

sub list_wildcard_mapping {
	my ($forced, $ours, $ls) = @_;
	my %refs;
	for (@$ls) {
		$refs{$_} = 01; # bit #0 to say "they have"
	}
	for ($git->command('for-each-ref', "refs/remotes/$ours")) {
		chomp;
		next unless (s|^[0-9a-f]{40}\s[a-z]+\srefs/remotes/$ours/||);
		next if ($_ eq 'HEAD');
		$refs{$_} ||= 0;
		$refs{$_} |= 02; # bit #1 to say "we have"
	}
	my (@new, @stale, @tracked);
	for (sort keys %refs) {
		my $have = $refs{$_};
		if ($have == 1) {
			push @new, $_;
		}
		elsif ($have == 2) {
			push @stale, $_;
		}
		elsif ($have == 3) {
			push @tracked, $_;
		}
	}
	return \@new, \@stale, \@tracked;
}

sub list_mapping {
	my ($name, $info) = @_;
	my $fetch = $info->{'FETCH'};
	my $ls = $info->{'LS_REMOTE'};
	my (@new, @stale, @tracked);

	for (@$fetch) {
		next unless (/(\+)?([^:]+):(.*)/);
		my ($forced, $theirs, $ours) = ($1, $2, $3);
		if ($theirs eq 'refs/heads/*' &&
		    $ours =~ /^refs\/remotes\/(.*)\/\*$/) {
			# wildcard mapping
			my ($w_new, $w_stale, $w_tracked)
				= list_wildcard_mapping($forced, $1, $ls);
			push @new, @$w_new;
			push @stale, @$w_stale;
			push @tracked, @$w_tracked;
		}
		elsif ($theirs =~ /\*/ || $ours =~ /\*/) {
			print STDERR "Warning: unrecognized mapping in remotes.$name.fetch: $_\n";
		}
		elsif ($theirs =~ s|^refs/heads/||) {
			if (!grep { $_ eq $theirs } @$ls) {
				push @stale, $theirs;
			}
			elsif ($ours ne '') {
				push @tracked, $theirs;
			}
		}
	}
	return \@new, \@stale, \@tracked;
}

sub show_mapping {
	my ($name, $info) = @_;
	my ($new, $stale, $tracked) = list_mapping($name, $info);
	if (@$new) {
		print "  New remote branches (next fetch will store in remotes/$name)\n";
		print "    @$new\n";
	}
	if (@$stale) {
		print "  Stale tracking branches in remotes/$name (use 'git remote prune')\n";
		print "    @$stale\n";
	}
	if (@$tracked) {
		print "  Tracked remote branches\n";
		print "    @$tracked\n";
	}
}

sub prune_remote {
	my ($name, $ls_remote) = @_;
	if (!exists $remote->{$name}) {
		print STDERR "No such remote $name\n";
		return;
	}
	my $info = $remote->{$name};
	update_ls_remote($ls_remote, $info);

	my ($new, $stale, $tracked) = list_mapping($name, $info);
	my $prefix = "refs/remotes/$name";
	foreach my $to_prune (@$stale) {
		my @v = $git->command(qw(rev-parse --verify), "$prefix/$to_prune");
		$git->command(qw(update-ref -d), "$prefix/$to_prune", $v[0]);
	}
}

sub show_remote {
	my ($name, $ls_remote) = @_;
	if (!exists $remote->{$name}) {
		print STDERR "No such remote $name\n";
		return;
	}
	my $info = $remote->{$name};
	update_ls_remote($ls_remote, $info);

	print "* remote $name\n";
	print "  URL: $info->{'URL'}\n";
	for my $branchname (sort keys %$branch) {
		next if ($branch->{$branchname}{'REMOTE'} ne $name);
		my @merged = map {
			s|^refs/heads/||;
			$_;
		} split(' ',"@{$branch->{$branchname}{'MERGE'}}");
		next unless (@merged);
		print "  Remote branch(es) merged with 'git pull' while on branch $branchname\n";
		print "    @merged\n";
	}
	if ($info->{'LS_REMOTE'}) {
		show_mapping($name, $info);
	}
}

sub add_remote {
	my ($name, $url, $opts) = @_;
	if (exists $remote->{$name}) {
		print STDERR "remote $name already exists.\n";
		exit(1);
	}
	$git->command('config', "remote.$name.url", $url);
	my $track = $opts->{'track'} || ["*"];

	for (@$track) {
		$git->command('config', '--add', "remote.$name.fetch",
			      "+refs/heads/$_:refs/remotes/$name/$_");
	}
	if ($opts->{'fetch'}) {
		$git->command('fetch', $name);
	}
	if (exists $opts->{'master'}) {
		$git->command('symbolic-ref', "refs/remotes/$name/HEAD",
			      "refs/remotes/$name/$opts->{'master'}");
	}
}

sub add_usage {
	print STDERR "Usage: git remote add [-f] [-t track]* [-m master] <name> <url>\n";
	exit(1);
}

if (!@ARGV) {
	for (sort keys %$remote) {
		print "$_\n";
	}
}
elsif ($ARGV[0] eq 'show') {
	my $ls_remote = 1;
	my $i;
	for ($i = 1; $i < @ARGV; $i++) {
		if ($ARGV[$i] eq '-n') {
			$ls_remote = 0;
		}
		else {
			last;
		}
	}
	if ($i >= @ARGV) {
		print STDERR "Usage: git remote show <remote>\n";
		exit(1);
	}
	for (; $i < @ARGV; $i++) {
		show_remote($ARGV[$i], $ls_remote);
	}
}
elsif ($ARGV[0] eq 'prune') {
	my $ls_remote = 1;
	my $i;
	for ($i = 1; $i < @ARGV; $i++) {
		if ($ARGV[$i] eq '-n') {
			$ls_remote = 0;
		}
		else {
			last;
		}
	}
	if ($i >= @ARGV) {
		print STDERR "Usage: git remote prune <remote>\n";
		exit(1);
	}
	for (; $i < @ARGV; $i++) {
		prune_remote($ARGV[$i], $ls_remote);
	}
}
elsif ($ARGV[0] eq 'add') {
	my %opts = ();
	while (1 < @ARGV && $ARGV[1] =~ /^-/) {
		my $opt = $ARGV[1];
		shift @ARGV;
		if ($opt eq '-f' || $opt eq '--fetch') {
			$opts{'fetch'} = 1;
			next;
		}
		if ($opt eq '-t' || $opt eq '--track') {
			if (@ARGV < 1) {
				add_usage();
			}
			$opts{'track'} ||= [];
			push @{$opts{'track'}}, $ARGV[1];
			shift @ARGV;
			next;
		}
		if ($opt eq '-m' || $opt eq '--master') {
			if ((@ARGV < 1) || exists $opts{'master'}) {
				add_usage();
			}
			$opts{'master'} = $ARGV[1];
			shift @ARGV;
			next;
		}
		add_usage();
	}
	if (@ARGV != 3) {
		add_usage();
	}
	add_remote($ARGV[1], $ARGV[2], \%opts);
}
else {
	print STDERR "Usage: git remote\n";
	print STDERR "       git remote add <name> <url>\n";
	print STDERR "       git remote show <name>\n";
	print STDERR "       git remote prune <name>\n";
	exit(1);
}
Commit	Line	Data
e194cd1e JH	1	#!/usr/bin/perl -w
	2
	3	use Git;
	4	my $git = Git->repository();
	5
	6	sub add_remote_config {
	7	my ($hash, $name, $what, $value) = @_;
	8	if ($what eq 'url') {
	9	if (exists $hash->{$name}{'URL'}) {
	10	print STDERR "Warning: more than one remote.$name.url\n";
	11	}
	12	$hash->{$name}{'URL'} = $value;
	13	}
	14	elsif ($what eq 'fetch') {
	15	$hash->{$name}{'FETCH'} \|\|= [];
	16	push @{$hash->{$name}{'FETCH'}}, $value;
	17	}
	18	if (!exists $hash->{$name}{'SOURCE'}) {
	19	$hash->{$name}{'SOURCE'} = 'config';
	20	}
	21	}
	22
	23	sub add_remote_remotes {
	24	my ($hash, $file, $name) = @_;
	25
	26	if (exists $hash->{$name}) {
	27	$hash->{$name}{'WARNING'} = 'ignored due to config';
	28	return;
	29	}
	30
	31	my $fh;
	32	if (!open($fh, '<', $file)) {
	33	print STDERR "Warning: cannot open $file\n";
	34	return;
	35	}
	36	my $it = { 'SOURCE' => 'remotes' };
	37	$hash->{$name} = $it;
	38	while (<$fh>) {
	39	chomp;
	40	if (/^URL:\s(.)$/) {
	41	# Having more than one is Ok -- it is used for push.
	42	if (! exists $it->{'URL'}) {
	43	$it->{'URL'} = $1;
	44	}
	45	}
	46	elsif (/^Push:\s(.)$/) {
	47	; # later
	48	}
	49	elsif (/^Pull:\s(.)$/) {
	50	$it->{'FETCH'} \|\|= [];
	51	push @{$it->{'FETCH'}}, $1;
	52	}
	53	elsif (/^\#/) {
	54	; # ignore
	55	}
	56	else {
	57	print STDERR "Warning: funny line in $file: $_\n";
	58	}
	59	}
	60	close($fh);
	61	}
	62
	63	sub list_remote {
	64	my ($git) = @_;
65	my %seen = ();
66	my @remotes = eval {
e0d10e1c	67	$git->command(qw(config --get-regexp), '^remote\.');
e194cd1e JH	68	};
	69	for (@remotes) {
	70	if (/^remote\.([^.])\.(\S)\s+(.*)$/) {
	71	add_remote_config(\%seen, $1, $2, $3);
	72	}
	73	}
	74
	75	my $dir = $git->repo_path() . "/remotes";
	76	if (opendir(my $dh, $dir)) {
	77	local $_;
	78	while ($_ = readdir($dh)) {
	79	chomp;
	80	next if (! -f "$dir/$_" \|\| ! -r _);
	81	add_remote_remotes(\%seen, "$dir/$_", $_);
	82	}
	83	}
	84
	85	return \%seen;
	86	}
	87
	88	sub add_branch_config {
	89	my ($hash, $name, $what, $value) = @_;
	90	if ($what eq 'remote') {
	91	if (exists $hash->{$name}{'REMOTE'}) {
	92	print STDERR "Warning: more than one branch.$name.remote\n";
	93	}
	94	$hash->{$name}{'REMOTE'} = $value;
	95	}
	96	elsif ($what eq 'merge') {
	97	$hash->{$name}{'MERGE'} \|\|= [];
	98	push @{$hash->{$name}{'MERGE'}}, $value;
	99	}
	100	}
	101
	102	sub list_branch {
	103	my ($git) = @_;
	104	my %seen = ();
	105	my @branches = eval {
e0d10e1c	106	$git->command(qw(config --get-regexp), '^branch\.');
e194cd1e JH	107	};
	108	for (@branches) {
	109	if (/^branch\.([^.])\.(\S)\s+(.*)$/) {
	110	add_branch_config(\%seen, $1, $2, $3);
	111	}
	112	}
	113
	114	return \%seen;
	115	}
	116
	117	my $remote = list_remote($git);
	118	my $branch = list_branch($git);
	119
	120	sub update_ls_remote {
	121	my ($harder, $info) = @_;
	122
	123	return if (($harder == 0) \|\|
	124	(($harder == 1) && exists $info->{'LS_REMOTE'}));
	125
	126	my @ref = map {
	127	s\|^[0-9a-f]{40}\s+refs/heads/\|\|;
	128	$_;
	129	} $git->command(qw(ls-remote --heads), $info->{'URL'});
	130	$info->{'LS_REMOTE'} = \@ref;
	131	}
	132
7a8c9ec1	133	sub list_wildcard_mapping {
e194cd1e JH	134	my ($forced, $ours, $ls) = @_;
	135	my %refs;
	136	for (@$ls) {
	137	$refs{$_} = 01; # bit #0 to say "they have"
	138	}
	139	for ($git->command('for-each-ref', "refs/remotes/$ours")) {
	140	chomp;
	141	next unless (s\|^[0-9a-f]{40}\s[a-z]+\srefs/remotes/$ours/\|\|);
	142	next if ($_ eq 'HEAD');
	143	$refs{$_} \|\|= 0;
	144	$refs{$_} \|= 02; # bit #1 to say "we have"
	145	}
	146	my (@new, @stale, @tracked);
	147	for (sort keys %refs) {
	148	my $have = $refs{$_};
	149	if ($have == 1) {
	150	push @new, $_;
	151	}
	152	elsif ($have == 2) {
	153	push @stale, $_;
	154	}
	155	elsif ($have == 3) {
	156	push @tracked, $_;
	157	}
	158	}
7a8c9ec1	159	return \@new, \@stale, \@tracked;
e194cd1e JH	160	}
e194cd1e JH	161
7a8c9ec1	162	sub list_mapping {
e194cd1e JH	163	my ($name, $info) = @_;
	164	my $fetch = $info->{'FETCH'};
	165	my $ls = $info->{'LS_REMOTE'};
7a8c9ec1	166	my (@new, @stale, @tracked);
e194cd1e JH	167
	168	for (@$fetch) {
	169	next unless (/(\+)?([^:]+):(.*)/);
	170	my ($forced, $theirs, $ours) = ($1, $2, $3);
	171	if ($theirs eq 'refs/heads/*' &&
	172	$ours =~ /^refs\/remotes\/(.)\/\$/) {
	173	# wildcard mapping
7a8c9ec1 SP	174	my ($w_new, $w_stale, $w_tracked)
	175	= list_wildcard_mapping($forced, $1, $ls);
	176	push @new, @$w_new;
	177	push @stale, @$w_stale;
	178	push @tracked, @$w_tracked;
e194cd1e JH	179	}
	180	elsif ($theirs =~ /\/ \|\| $ours =~ /\/) {
	181	print STDERR "Warning: unrecognized mapping in remotes.$name.fetch: $_\n";
	182	}
	183	elsif ($theirs =~ s\|^refs/heads/\|\|) {
	184	if (!grep { $_ eq $theirs } @$ls) {
	185	push @stale, $theirs;
	186	}
	187	elsif ($ours ne '') {
	188	push @tracked, $theirs;
	189	}
	190	}
	191	}
7a8c9ec1 SP	192	return \@new, \@stale, \@tracked;
	193	}
	194
	195	sub show_mapping {
	196	my ($name, $info) = @_;
	197	my ($new, $stale, $tracked) = list_mapping($name, $info);
	198	if (@$new) {
	199	print " New remote branches (next fetch will store in remotes/$name)\n";
	200	print " @$new\n";
	201	}
	202	if (@$stale) {
859607df	203	print " Stale tracking branches in remotes/$name (use 'git remote prune')\n";
7a8c9ec1	204	print " @$stale\n";
e194cd1e	205	}
7a8c9ec1	206	if (@$tracked) {
e194cd1e	207	print " Tracked remote branches\n";
7a8c9ec1	208	print " @$tracked\n";
e194cd1e JH	209	}
	210	}
	211
859607df SP	212	sub prune_remote {
	213	my ($name, $ls_remote) = @_;
	214	if (!exists $remote->{$name}) {
	215	print STDERR "No such remote $name\n";
	216	return;
	217	}
	218	my $info = $remote->{$name};
	219	update_ls_remote($ls_remote, $info);
	220
	221	my ($new, $stale, $tracked) = list_mapping($name, $info);
	222	my $prefix = "refs/remotes/$name";
	223	foreach my $to_prune (@$stale) {
	224	my @v = $git->command(qw(rev-parse --verify), "$prefix/$to_prune");
	225	$git->command(qw(update-ref -d), "$prefix/$to_prune", $v[0]);
	226	}
	227	}
	228
e194cd1e JH	229	sub show_remote {
	230	my ($name, $ls_remote) = @_;
	231	if (!exists $remote->{$name}) {
	232	print STDERR "No such remote $name\n";
	233	return;
	234	}
	235	my $info = $remote->{$name};
	236	update_ls_remote($ls_remote, $info);
	237
	238	print "* remote $name\n";
	239	print " URL: $info->{'URL'}\n";
	240	for my $branchname (sort keys %$branch) {
	241	next if ($branch->{$branchname}{'REMOTE'} ne $name);
	242	my @merged = map {
	243	s\|^refs/heads/\|\|;
	244	$_;
	245	} split(' ',"@{$branch->{$branchname}{'MERGE'}}");
	246	next unless (@merged);
	247	print " Remote branch(es) merged with 'git pull' while on branch $branchname\n";
	248	print " @merged\n";
	249	}
	250	if ($info->{'LS_REMOTE'}) {
	251	show_mapping($name, $info);
	252	}
	253	}
	254
	255	sub add_remote {
b6f5da1e	256	my ($name, $url, $opts) = @_;
e194cd1e JH	257	if (exists $remote->{$name}) {
	258	print STDERR "remote $name already exists.\n";
	259	exit(1);
	260	}
e0d10e1c	261	$git->command('config', "remote.$name.url", $url);
b6f5da1e JH	262	my $track = $opts->{'track'} \|\| ["*"];
	263
	264	for (@$track) {
	265	$git->command('config', '--add', "remote.$name.fetch",
	266	"+refs/heads/$_:refs/remotes/$name/$_");
	267	}
	268	if ($opts->{'fetch'}) {
	269	$git->command('fetch', $name);
	270	}
	271	if (exists $opts->{'master'}) {
	272	$git->command('symbolic-ref', "refs/remotes/$name/HEAD",
	273	"refs/remotes/$name/$opts->{'master'}");
	274	}
	275	}
	276
	277	sub add_usage {
	278	print STDERR "Usage: git remote add [-f] [-t track]* [-m master] <name> <url>\n";
	279	exit(1);
e194cd1e JH	280	}
	281
	282	if (!@ARGV) {
	283	for (sort keys %$remote) {
	284	print "$_\n";
	285	}
	286	}
	287	elsif ($ARGV[0] eq 'show') {
	288	my $ls_remote = 1;
	289	my $i;
	290	for ($i = 1; $i < @ARGV; $i++) {
	291	if ($ARGV[$i] eq '-n') {
	292	$ls_remote = 0;
	293	}
	294	else {
	295	last;
	296	}
	297	}
	298	if ($i >= @ARGV) {
	299	print STDERR "Usage: git remote show <remote>\n";
	300	exit(1);
	301	}
	302	for (; $i < @ARGV; $i++) {
	303	show_remote($ARGV[$i], $ls_remote);
	304	}
	305	}
859607df SP	306	elsif ($ARGV[0] eq 'prune') {
	307	my $ls_remote = 1;
	308	my $i;
	309	for ($i = 1; $i < @ARGV; $i++) {
	310	if ($ARGV[$i] eq '-n') {
	311	$ls_remote = 0;
	312	}
	313	else {
	314	last;
	315	}
	316	}
	317	if ($i >= @ARGV) {
	318	print STDERR "Usage: git remote prune <remote>\n";
	319	exit(1);
	320	}
	321	for (; $i < @ARGV; $i++) {
	322	prune_remote($ARGV[$i], $ls_remote);
	323	}
	324	}
e194cd1e	325	elsif ($ARGV[0] eq 'add') {
b6f5da1e JH	326	my %opts = ();
	327	while (1 < @ARGV && $ARGV[1] =~ /^-/) {
	328	my $opt = $ARGV[1];
	329	shift @ARGV;
	330	if ($opt eq '-f' \|\| $opt eq '--fetch') {
	331	$opts{'fetch'} = 1;
	332	next;
	333	}
	334	if ($opt eq '-t' \|\| $opt eq '--track') {
	335	if (@ARGV < 1) {
	336	add_usage();
	337	}
	338	$opts{'track'} \|\|= [];
	339	push @{$opts{'track'}}, $ARGV[1];
	340	shift @ARGV;
	341	next;
	342	}
	343	if ($opt eq '-m' \|\| $opt eq '--master') {
	344	if ((@ARGV < 1) \|\| exists $opts{'master'}) {
	345	add_usage();
	346	}
	347	$opts{'master'} = $ARGV[1];
	348	shift @ARGV;
	349	next;
	350	}
	351	add_usage();
	352	}
e194cd1e	353	if (@ARGV != 3) {
b6f5da1e	354	add_usage();
e194cd1e	355	}
b6f5da1e	356	add_remote($ARGV[1], $ARGV[2], \%opts);
e194cd1e	357	}
c03f7757 QT	358	else {
	359	print STDERR "Usage: git remote\n";
	360	print STDERR " git remote add <name> <url>\n";
	361	print STDERR " git remote show <name>\n";
859607df	362	print STDERR " git remote prune <name>\n";
c03f7757 QT	363	exit(1);
c03f7757 QT	364	}