Andrew's git / gitweb.git / git-remote.perl
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git-remote.perlon commit contrib/hooks/post-receive-email: reformat to wrap comments at 76 chars (15a2f53)
   1#!/usr/bin/perl -w
   2
   3use Git;
   4my $git = Git->repository();
   5
   6sub add_remote_config {
   7        my ($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'}}, $value;
  17        }
  18        elsif ($what eq 'push') {
  19                $hash->{$name}{'PUSH'} ||= [];
  20                push @{$hash->{$name}{'PUSH'}}, $value;
  21        }
  22        if (!exists $hash->{$name}{'SOURCE'}) {
  23                $hash->{$name}{'SOURCE'} = 'config';
  24        }
  25}
  26
  27sub add_remote_remotes {
  28        my ($hash, $file, $name) = @_;
  29
  30        if (exists $hash->{$name}) {
  31                $hash->{$name}{'WARNING'} = 'ignored due to config';
  32                return;
  33        }
  34
  35        my $fh;
  36        if (!open($fh, '<', $file)) {
  37                print STDERR "Warning: cannot open $file\n";
  38                return;
  39        }
  40        my $it = { 'SOURCE' => 'remotes' };
  41        $hash->{$name} = $it;
  42        while (<$fh>) {
  43                chomp;
  44                if (/^URL:\s*(.*)$/) {
  45                        # Having more than one is Ok -- it is used for push.
  46                        if (! exists $it->{'URL'}) {
  47                                $it->{'URL'} = $1;
  48                        }
  49                }
  50                elsif (/^Push:\s*(.*)$/) {
  51                        $it->{'PUSH'} ||= [];
  52                        push @{$it->{'PUSH'}}, $1;
  53                }
  54                elsif (/^Pull:\s*(.*)$/) {
  55                        $it->{'FETCH'} ||= [];
  56                        push @{$it->{'FETCH'}}, $1;
  57                }
  58                elsif (/^\#/) {
  59                        ; # ignore
  60                }
  61                else {
  62                        print STDERR "Warning: funny line in $file: $_\n";
  63                }
  64        }
  65        close($fh);
  66}
  67
  68sub list_remote {
  69        my ($git) = @_;
  70        my %seen = ();
  71        my @remotes = eval {
  72                $git->command(qw(config --get-regexp), '^remote\.');
  73        };
  74        for (@remotes) {
  75                if (/^remote\.(\S+?)\.([^.\s]+)\s+(.*)$/) {
  76                        add_remote_config(\%seen, $1, $2, $3);
  77                }
  78        }
  79
  80        my $dir = $git->repo_path() . "/remotes";
  81        if (opendir(my $dh, $dir)) {
  82                local $_;
  83                while ($_ = readdir($dh)) {
  84                        chomp;
  85                        next if (! -f "$dir/$_" || ! -r _);
  86                        add_remote_remotes(\%seen, "$dir/$_", $_);
  87                }
  88        }
  89
  90        return \%seen;
  91}
  92
  93sub add_branch_config {
  94        my ($hash, $name, $what, $value) = @_;
  95        if ($what eq 'remote') {
  96                if (exists $hash->{$name}{'REMOTE'}) {
  97                        print STDERR "Warning: more than one branch.$name.remote\n";
  98                }
  99                $hash->{$name}{'REMOTE'} = $value;
 100        }
 101        elsif ($what eq 'merge') {
 102                $hash->{$name}{'MERGE'} ||= [];
 103                push @{$hash->{$name}{'MERGE'}}, $value;
 104        }
 105}
 106
 107sub list_branch {
 108        my ($git) = @_;
 109        my %seen = ();
 110        my @branches = eval {
 111                $git->command(qw(config --get-regexp), '^branch\.');
 112        };
 113        for (@branches) {
 114                if (/^branch\.([^.]*)\.(\S*)\s+(.*)$/) {
 115                        add_branch_config(\%seen, $1, $2, $3);
 116                }
 117        }
 118
 119        return \%seen;
 120}
 121
 122my $remote = list_remote($git);
 123my $branch = list_branch($git);
 124
 125sub update_ls_remote {
 126        my ($harder, $info) = @_;
 127
 128        return if (($harder == 0) ||
 129                   (($harder == 1) && exists $info->{'LS_REMOTE'}));
 130
 131        my @ref = map {
 132                s|^[0-9a-f]{40}\s+refs/heads/||;
 133                $_;
 134        } $git->command(qw(ls-remote --heads), $info->{'URL'});
 135        $info->{'LS_REMOTE'} = \@ref;
 136}
 137
 138sub list_wildcard_mapping {
 139        my ($forced, $ours, $ls) = @_;
 140        my %refs;
 141        for (@$ls) {
 142                $refs{$_} = 01; # bit #0 to say "they have"
 143        }
 144        for ($git->command('for-each-ref', "refs/remotes/$ours")) {
 145                chomp;
 146                next unless (s|^[0-9a-f]{40}\s[a-z]+\srefs/remotes/$ours/||);
 147                next if ($_ eq 'HEAD');
 148                $refs{$_} ||= 0;
 149                $refs{$_} |= 02; # bit #1 to say "we have"
 150        }
 151        my (@new, @stale, @tracked);
 152        for (sort keys %refs) {
 153                my $have = $refs{$_};
 154                if ($have == 1) {
 155                        push @new, $_;
 156                }
 157                elsif ($have == 2) {
 158                        push @stale, $_;
 159                }
 160                elsif ($have == 3) {
 161                        push @tracked, $_;
 162                }
 163        }
 164        return \@new, \@stale, \@tracked;
 165}
 166
 167sub list_mapping {
 168        my ($name, $info) = @_;
 169        my $fetch = $info->{'FETCH'};
 170        my $ls = $info->{'LS_REMOTE'};
 171        my (@new, @stale, @tracked);
 172
 173        for (@$fetch) {
 174                next unless (/(\+)?([^:]+):(.*)/);
 175                my ($forced, $theirs, $ours) = ($1, $2, $3);
 176                if ($theirs eq 'refs/heads/*' &&
 177                    $ours =~ /^refs\/remotes\/(.*)\/\*$/) {
 178                        # wildcard mapping
 179                        my ($w_new, $w_stale, $w_tracked)
 180                                = list_wildcard_mapping($forced, $1, $ls);
 181                        push @new, @$w_new;
 182                        push @stale, @$w_stale;
 183                        push @tracked, @$w_tracked;
 184                }
 185                elsif ($theirs =~ /\*/ || $ours =~ /\*/) {
 186                        print STDERR "Warning: unrecognized mapping in remotes.$name.fetch: $_\n";
 187                }
 188                elsif ($theirs =~ s|^refs/heads/||) {
 189                        if (!grep { $_ eq $theirs } @$ls) {
 190                                push @stale, $theirs;
 191                        }
 192                        elsif ($ours ne '') {
 193                                push @tracked, $theirs;
 194                        }
 195                }
 196        }
 197        return \@new, \@stale, \@tracked;
 198}
 199
 200sub show_mapping {
 201        my ($name, $info) = @_;
 202        my ($new, $stale, $tracked) = list_mapping($name, $info);
 203        if (@$new) {
 204                print "  New remote branches (next fetch will store in remotes/$name)\n";
 205                print "    @$new\n";
 206        }
 207        if (@$stale) {
 208                print "  Stale tracking branches in remotes/$name (use 'git remote prune')\n";
 209                print "    @$stale\n";
 210        }
 211        if (@$tracked) {
 212                print "  Tracked remote branches\n";
 213                print "    @$tracked\n";
 214        }
 215}
 216
 217sub prune_remote {
 218        my ($name, $ls_remote) = @_;
 219        if (!exists $remote->{$name}) {
 220                print STDERR "No such remote $name\n";
 221                return 1;
 222        }
 223        my $info = $remote->{$name};
 224        update_ls_remote($ls_remote, $info);
 225
 226        my ($new, $stale, $tracked) = list_mapping($name, $info);
 227        my $prefix = "refs/remotes/$name";
 228        foreach my $to_prune (@$stale) {
 229                my @v = $git->command(qw(rev-parse --verify), "$prefix/$to_prune");
 230                $git->command(qw(update-ref -d), "$prefix/$to_prune", $v[0]);
 231        }
 232        return 0;
 233}
 234
 235sub show_remote {
 236        my ($name, $ls_remote) = @_;
 237        if (!exists $remote->{$name}) {
 238                print STDERR "No such remote $name\n";
 239                return 1;
 240        }
 241        my $info = $remote->{$name};
 242        update_ls_remote($ls_remote, $info);
 243
 244        print "* remote $name\n";
 245        print "  URL: $info->{'URL'}\n";
 246        for my $branchname (sort keys %$branch) {
 247                next unless (defined $branch->{$branchname}{'REMOTE'} &&
 248                             $branch->{$branchname}{'REMOTE'} eq $name);
 249                my @merged = map {
 250                        s|^refs/heads/||;
 251                        $_;
 252                } split(' ',"@{$branch->{$branchname}{'MERGE'}}");
 253                next unless (@merged);
 254                print "  Remote branch(es) merged with 'git pull' while on branch $branchname\n";
 255                print "    @merged\n";
 256        }
 257        if ($info->{'LS_REMOTE'}) {
 258                show_mapping($name, $info);
 259        }
 260        if ($info->{'PUSH'}) {
 261                my @pushed = map {
 262                        s|^refs/heads/||;
 263                        s|^\+refs/heads/|+|;
 264                        s|:refs/heads/|:|;
 265                        $_;
 266                } @{$info->{'PUSH'}};
 267                print "  Local branch(es) pushed with 'git push'\n";
 268                print "    @pushed\n";
 269        }
 270        return 0;
 271}
 272
 273sub add_remote {
 274        my ($name, $url, $opts) = @_;
 275        if (exists $remote->{$name}) {
 276                print STDERR "remote $name already exists.\n";
 277                exit(1);
 278        }
 279        $git->command('config', "remote.$name.url", $url);
 280        my $track = $opts->{'track'} || ["*"];
 281
 282        for (@$track) {
 283                $git->command('config', '--add', "remote.$name.fetch",
 284                                $opts->{'mirror'} ?
 285                                "+refs/$_:refs/$_" :
 286                                "+refs/heads/$_:refs/remotes/$name/$_");
 287        }
 288        if ($opts->{'fetch'}) {
 289                $git->command('fetch', $name);
 290        }
 291        if (exists $opts->{'master'}) {
 292                $git->command('symbolic-ref', "refs/remotes/$name/HEAD",
 293                              "refs/remotes/$name/$opts->{'master'}");
 294        }
 295}
 296
 297sub update_remote {
 298        my ($name) = @_;
 299
 300        my $conf = $git->config("remotes." . $name);
 301        if (defined($conf)) {
 302                @remotes = split(' ', $conf);
 303        } elsif ($name eq 'default') {
 304                undef @remotes;
 305                for (sort keys %$remote) {
 306                        my $do_fetch = $git->config_bool("remote." . $_ .
 307                                                    ".skipDefaultUpdate");
 308                        unless ($do_fetch) {
 309                                push @remotes, $_;
 310                        }
 311                }
 312        } else {
 313                print STDERR "Remote group $name does not exists.\n";
 314                exit(1);
 315        }
 316        for (@remotes) {
 317                print "Updating $_\n";
 318                $git->command('fetch', "$_");
 319        }
 320}
 321
 322sub rm_remote {
 323        my ($name) = @_;
 324        if (!exists $remote->{$name}) {
 325                print STDERR "No such remote $name\n";
 326                return 1;
 327        }
 328
 329        $git->command('config', '--remove-section', "remote.$name");
 330
 331        eval {
 332            my @trackers = $git->command('config', '--get-regexp',
 333                        'branch.*.remote', $name);
 334                for (@trackers) {
 335                        /^branch\.(.*)?\.remote/;
 336                        $git->config('--unset', "branch.$1.remote");
 337                        $git->config('--unset', "branch.$1.merge");
 338                }
 339        };
 340
 341        my @refs = $git->command('for-each-ref',
 342                '--format=%(refname) %(objectname)', "refs/remotes/$name");
 343        for (@refs) {
 344                ($ref, $object) = split;
 345                $git->command(qw(update-ref -d), $ref, $object);
 346        }
 347        return 0;
 348}
 349
 350sub add_usage {
 351        print STDERR "Usage: git remote add [-f] [-t track]* [-m master] <name> <url>\n";
 352        exit(1);
 353}
 354
 355local $VERBOSE = 0;
 356@ARGV = grep {
 357        if ($_ eq '-v' or $_ eq '--verbose') {
 358                $VERBOSE=1;
 359                0
 360        } else {
 361                1
 362        }
 363} @ARGV;
 364
 365if (!@ARGV) {
 366        for (sort keys %$remote) {
 367                print "$_";
 368                print "\t$remote->{$_}->{URL}" if $VERBOSE;
 369                print "\n";
 370        }
 371}
 372elsif ($ARGV[0] eq 'show') {
 373        my $ls_remote = 1;
 374        my $i;
 375        for ($i = 1; $i < @ARGV; $i++) {
 376                if ($ARGV[$i] eq '-n') {
 377                        $ls_remote = 0;
 378                }
 379                else {
 380                        last;
 381                }
 382        }
 383        if ($i >= @ARGV) {
 384                print STDERR "Usage: git remote show <remote>\n";
 385                exit(1);
 386        }
 387        my $status = 0;
 388        for (; $i < @ARGV; $i++) {
 389                $status |= show_remote($ARGV[$i], $ls_remote);
 390        }
 391        exit($status);
 392}
 393elsif ($ARGV[0] eq 'update') {
 394        if (@ARGV <= 1) {
 395                update_remote("default");
 396                exit(1);
 397        }
 398        for ($i = 1; $i < @ARGV; $i++) {
 399                update_remote($ARGV[$i]);
 400        }
 401}
 402elsif ($ARGV[0] eq 'prune') {
 403        my $ls_remote = 1;
 404        my $i;
 405        for ($i = 1; $i < @ARGV; $i++) {
 406                if ($ARGV[$i] eq '-n') {
 407                        $ls_remote = 0;
 408                }
 409                else {
 410                        last;
 411                }
 412        }
 413        if ($i >= @ARGV) {
 414                print STDERR "Usage: git remote prune <remote>\n";
 415                exit(1);
 416        }
 417        my $status = 0;
 418        for (; $i < @ARGV; $i++) {
 419                $status |= prune_remote($ARGV[$i], $ls_remote);
 420        }
 421        exit($status);
 422}
 423elsif ($ARGV[0] eq 'add') {
 424        my %opts = ();
 425        while (1 < @ARGV && $ARGV[1] =~ /^-/) {
 426                my $opt = $ARGV[1];
 427                shift @ARGV;
 428                if ($opt eq '-f' || $opt eq '--fetch') {
 429                        $opts{'fetch'} = 1;
 430                        next;
 431                }
 432                if ($opt eq '-t' || $opt eq '--track') {
 433                        if (@ARGV < 1) {
 434                                add_usage();
 435                        }
 436                        $opts{'track'} ||= [];
 437                        push @{$opts{'track'}}, $ARGV[1];
 438                        shift @ARGV;
 439                        next;
 440                }
 441                if ($opt eq '-m' || $opt eq '--master') {
 442                        if ((@ARGV < 1) || exists $opts{'master'}) {
 443                                add_usage();
 444                        }
 445                        $opts{'master'} = $ARGV[1];
 446                        shift @ARGV;
 447                        next;
 448                }
 449                if ($opt eq '--mirror') {
 450                        $opts{'mirror'} = 1;
 451                        next;
 452                }
 453                add_usage();
 454        }
 455        if (@ARGV != 3) {
 456                add_usage();
 457        }
 458        add_remote($ARGV[1], $ARGV[2], \%opts);
 459}
 460elsif ($ARGV[0] eq 'rm') {
 461        if (@ARGV <= 1) {
 462                print STDERR "Usage: git remote rm <remote>\n";
 463                exit(1);
 464        }
 465        exit(rm_remote($ARGV[1]));
 466}
 467else {
 468        print STDERR "Usage: git remote\n";
 469        print STDERR "       git remote add <name> <url>\n";
 470        print STDERR "       git remote rm <name>\n";
 471        print STDERR "       git remote show <name>\n";
 472        print STDERR "       git remote prune <name>\n";
 473        print STDERR "       git remote update [group]\n";
 474        exit(1);
 475}