git-add--interactive.perl

   1 #!/usr/bin/perl -w
   2
   3 use strict;
   4 use Git;
   5
   6 binmode(STDOUT, ":raw");
   7
   8 my $repo = Git->repository();
   9
  10 my $menu_use_color = $repo->get_colorbool('color.interactive');
  11 my ($prompt_color, $header_color, $help_color) =
  12         $menu_use_color ? (
  13                 $repo->get_color('color.interactive.prompt', 'bold blue'),
  14                 $repo->get_color('color.interactive.header', 'bold'),
  15                 $repo->get_color('color.interactive.help', 'red bold'),
  16         ) : ();
  17 my $error_color = ();
  18 if ($menu_use_color) {
  19         my $help_color_spec = ($repo->config('color.interactive.help') or
  20                                 'red bold');
  21         $error_color = $repo->get_color('color.interactive.error',
  22                                         $help_color_spec);
  23 }
  24
  25 my $diff_use_color = $repo->get_colorbool('color.diff');
  26 my ($fraginfo_color) =
  27         $diff_use_color ? (
  28                 $repo->get_color('color.diff.frag', 'cyan'),
  29         ) : ();
  30 my ($diff_plain_color) =
  31         $diff_use_color ? (
  32                 $repo->get_color('color.diff.plain', ''),
  33         ) : ();
  34 my ($diff_old_color) =
  35         $diff_use_color ? (
  36                 $repo->get_color('color.diff.old', 'red'),
  37         ) : ();
  38 my ($diff_new_color) =
  39         $diff_use_color ? (
  40                 $repo->get_color('color.diff.new', 'green'),
  41         ) : ();
  42
  43 my $normal_color = $repo->get_color("", "reset");
  44
  45 my $use_readkey = 0;
  46 sub ReadMode;
  47 sub ReadKey;
  48 if ($repo->config_bool("interactive.singlekey")) {
  49         eval {
  50                 require Term::ReadKey;
  51                 Term::ReadKey->import;
  52                 $use_readkey = 1;
  53         };
  54 }
  55
  56 sub colored {
  57         my $color = shift;
  58         my $string = join("", @_);
  59
  60         if (defined $color) {
  61                 # Put a color code at the beginning of each line, a reset at the end
  62                 # color after newlines that are not at the end of the string
  63                 $string =~ s/(\n+)(.)/$1$color$2/g;
  64                 # reset before newlines
  65                 $string =~ s/(\n+)/$normal_color$1/g;
  66                 # codes at beginning and end (if necessary):
  67                 $string =~ s/^/$color/;
  68                 $string =~ s/$/$normal_color/ unless $string =~ /\n$/;
  69         }
  70         return $string;
  71 }
  72
  73 # command line options
  74 my $patch_mode;
  75
  76 sub apply_patch;
  77
  78 my %patch_modes = (
  79         'stage' => {
  80                 DIFF => 'diff-files -p',
  81                 APPLY => sub { apply_patch 'apply --cached', @_; },
  82                 APPLY_CHECK => 'apply --cached',
  83                 VERB => 'Stage',
  84                 TARGET => '',
  85                 PARTICIPLE => 'staging',
  86                 FILTER => 'file-only',
  87         },
  88 );
  89
  90 my %patch_mode_flavour = %{$patch_modes{stage}};
  91
  92 sub run_cmd_pipe {
  93         if ($^O eq 'MSWin32' || $^O eq 'msys') {
  94                 my @invalid = grep {m/[":*]/} @_;
  95                 die "$^O does not support: @invalid\n" if @invalid;
  96                 my @args = map { m/ /o ? "\"$_\"": $_ } @_;
  97                 return qx{@args};
  98         } else {
  99                 my $fh = undef;
 100                 open($fh, '-|', @_) or die;
 101                 return <$fh>;
 102         }
 103 }
 104
 105 my ($GIT_DIR) = run_cmd_pipe(qw(git rev-parse --git-dir));
 106
 107 if (!defined $GIT_DIR) {
 108         exit(1); # rev-parse would have already said "not a git repo"
 109 }
 110 chomp($GIT_DIR);
 111
 112 my %cquote_map = (
 113  "b" => chr(8),
 114  "t" => chr(9),
 115  "n" => chr(10),
 116  "v" => chr(11),
 117  "f" => chr(12),
 118  "r" => chr(13),
 119  "\\" => "\\",
 120  "\042" => "\042",
 121 );
 122
 123 sub unquote_path {
 124         local ($_) = @_;
 125         my ($retval, $remainder);
 126         if (!/^\042(.*)\042$/) {
 127                 return $_;
 128         }
 129         ($_, $retval) = ($1, "");
 130         while (/^([^\\]*)\\(.*)$/) {
 131                 $remainder = $2;
 132                 $retval .= $1;
 133                 for ($remainder) {
 134                         if (/^([0-3][0-7][0-7])(.*)$/) {
 135                                 $retval .= chr(oct($1));
 136                                 $_ = $2;
 137                                 last;
 138                         }
 139                         if (/^([\\\042btnvfr])(.*)$/) {
 140                                 $retval .= $cquote_map{$1};
 141                                 $_ = $2;
 142                                 last;
 143                         }
 144                         # This is malformed -- just return it as-is for now.
 145                         return $_[0];
 146                 }
 147                 $_ = $remainder;
 148         }
 149         $retval .= $_;
 150         return $retval;
 151 }
 152
 153 sub refresh {
 154         my $fh;
 155         open $fh, 'git update-index --refresh |'
 156             or die;
 157         while (<$fh>) {
 158                 ;# ignore 'needs update'
 159         }
 160         close $fh;
 161 }
 162
 163 sub list_untracked {
 164         map {
 165                 chomp $_;
 166                 unquote_path($_);
 167         }
 168         run_cmd_pipe(qw(git ls-files --others --exclude-standard --), @ARGV);
 169 }
 170
 171 my $status_fmt = '%12s %12s %s';
 172 my $status_head = sprintf($status_fmt, 'staged', 'unstaged', 'path');
 173
 174 {
 175         my $initial;
 176         sub is_initial_commit {
 177                 $initial = system('git rev-parse HEAD -- >/dev/null 2>&1') != 0
 178                         unless defined $initial;
 179                 return $initial;
 180         }
 181 }
 182
 183 sub get_empty_tree {
 184         return '4b825dc642cb6eb9a060e54bf8d69288fbee4904';
 185 }
 186
 187 # Returns list of hashes, contents of each of which are:
 188 # VALUE:        pathname
 189 # BINARY:       is a binary path
 190 # INDEX:        is index different from HEAD?
 191 # FILE:         is file different from index?
 192 # INDEX_ADDDEL: is it add/delete between HEAD and index?
 193 # FILE_ADDDEL:  is it add/delete between index and file?
 194
 195 sub list_modified {
 196         my ($only) = @_;
 197         my (%data, @return);
 198         my ($add, $del, $adddel, $file);
 199         my @tracked = ();
 200
 201         if (@ARGV) {
 202                 @tracked = map {
 203                         chomp $_;
 204                         unquote_path($_);
 205                 } run_cmd_pipe(qw(git ls-files --exclude-standard --), @ARGV);
 206                 return if (!@tracked);
 207         }
 208
 209         my $reference = is_initial_commit() ? get_empty_tree() : 'HEAD';
 210         for (run_cmd_pipe(qw(git diff-index --cached
 211                              --numstat --summary), $reference,
 212                              '--', @tracked)) {
 213                 if (($add, $del, $file) =
 214                     /^([-\d]+)  ([-\d]+)        (.*)/) {
 215                         my ($change, $bin);
 216                         $file = unquote_path($file);
 217                         if ($add eq '-' && $del eq '-') {
 218                                 $change = 'binary';
 219                                 $bin = 1;
 220                         }
 221                         else {
 222                                 $change = "+$add/-$del";
 223                         }
 224                         $data{$file} = {
 225                                 INDEX => $change,
 226                                 BINARY => $bin,
 227                                 FILE => 'nothing',
 228                         }
 229                 }
 230                 elsif (($adddel, $file) =
 231                        /^ (create|delete) mode [0-7]+ (.*)$/) {
 232                         $file = unquote_path($file);
 233                         $data{$file}{INDEX_ADDDEL} = $adddel;
 234                 }
 235         }
 236
 237         for (run_cmd_pipe(qw(git diff-files --numstat --summary --), @tracked)) {
 238                 if (($add, $del, $file) =
 239                     /^([-\d]+)  ([-\d]+)        (.*)/) {
 240                         $file = unquote_path($file);
 241                         if (!exists $data{$file}) {
 242                                 $data{$file} = +{
 243                                         INDEX => 'unchanged',
 244                                         BINARY => 0,
 245                                 };
 246                         }
 247                         my ($change, $bin);
 248                         if ($add eq '-' && $del eq '-') {
 249                                 $change = 'binary';
 250                                 $bin = 1;
 251                         }
 252                         else {
 253                                 $change = "+$add/-$del";
 254                         }
 255                         $data{$file}{FILE} = $change;
 256                         if ($bin) {
 257                                 $data{$file}{BINARY} = 1;
 258                         }
 259                 }
 260                 elsif (($adddel, $file) =
 261                        /^ (create|delete) mode [0-7]+ (.*)$/) {
 262                         $file = unquote_path($file);
 263                         $data{$file}{FILE_ADDDEL} = $adddel;
 264                 }
 265         }
 266
 267         for (sort keys %data) {
 268                 my $it = $data{$_};
 269
 270                 if ($only) {
 271                         if ($only eq 'index-only') {
 272                                 next if ($it->{INDEX} eq 'unchanged');
 273                         }
 274                         if ($only eq 'file-only') {
 275                                 next if ($it->{FILE} eq 'nothing');
 276                         }
 277                 }
 278                 push @return, +{
 279                         VALUE => $_,
 280                         %$it,
 281                 };
 282         }
 283         return @return;
 284 }
 285
 286 sub find_unique {
 287         my ($string, @stuff) = @_;
 288         my $found = undef;
 289         for (my $i = 0; $i < @stuff; $i++) {
 290                 my $it = $stuff[$i];
 291                 my $hit = undef;
 292                 if (ref $it) {
 293                         if ((ref $it) eq 'ARRAY') {
 294                                 $it = $it->[0];
 295                         }
 296                         else {
 297                                 $it = $it->{VALUE};
 298                         }
 299                 }
 300                 eval {
 301                         if ($it =~ /^$string/) {
 302                                 $hit = 1;
 303                         };
 304                 };
 305                 if (defined $hit && defined $found) {
 306                         return undef;
 307                 }
 308                 if ($hit) {
 309                         $found = $i + 1;
 310                 }
 311         }
 312         return $found;
 313 }
 314
 315 # inserts string into trie and updates count for each character
 316 sub update_trie {
 317         my ($trie, $string) = @_;
 318         foreach (split //, $string) {
 319                 $trie = $trie->{$_} ||= {COUNT => 0};
 320                 $trie->{COUNT}++;
 321         }
 322 }
 323
 324 # returns an array of tuples (prefix, remainder)
 325 sub find_unique_prefixes {
 326         my @stuff = @_;
 327         my @return = ();
 328
 329         # any single prefix exceeding the soft limit is omitted
 330         # if any prefix exceeds the hard limit all are omitted
 331         # 0 indicates no limit
 332         my $soft_limit = 0;
 333         my $hard_limit = 3;
 334
 335         # build a trie modelling all possible options
 336         my %trie;
 337         foreach my $print (@stuff) {
 338                 if ((ref $print) eq 'ARRAY') {
 339                         $print = $print->[0];
 340                 }
 341                 elsif ((ref $print) eq 'HASH') {
 342                         $print = $print->{VALUE};
 343                 }
 344                 update_trie(\%trie, $print);
 345                 push @return, $print;
 346         }
 347
 348         # use the trie to find the unique prefixes
 349         for (my $i = 0; $i < @return; $i++) {
 350                 my $ret = $return[$i];
 351                 my @letters = split //, $ret;
 352                 my %search = %trie;
 353                 my ($prefix, $remainder);
 354                 my $j;
 355                 for ($j = 0; $j < @letters; $j++) {
 356                         my $letter = $letters[$j];
 357                         if ($search{$letter}{COUNT} == 1) {
 358                                 $prefix = substr $ret, 0, $j + 1;
 359                                 $remainder = substr $ret, $j + 1;
 360                                 last;
 361                         }
 362                         else {
 363                                 my $prefix = substr $ret, 0, $j;
 364                                 return ()
 365                                     if ($hard_limit && $j + 1 > $hard_limit);
 366                         }
 367                         %search = %{$search{$letter}};
 368                 }
 369                 if (ord($letters[0]) > 127 ||
 370                     ($soft_limit && $j + 1 > $soft_limit)) {
 371                         $prefix = undef;
 372                         $remainder = $ret;
 373                 }
 374                 $return[$i] = [$prefix, $remainder];
 375         }
 376         return @return;
 377 }
 378
 379 # filters out prefixes which have special meaning to list_and_choose()
 380 sub is_valid_prefix {
 381         my $prefix = shift;
 382         return (defined $prefix) &&
 383             !($prefix =~ /[\s,]/) && # separators
 384             !($prefix =~ /^-/) &&    # deselection
 385             !($prefix =~ /^\d+/) &&  # selection
 386             ($prefix ne '*') &&      # "all" wildcard
 387             ($prefix ne '?');        # prompt help
 388 }
 389
 390 # given a prefix/remainder tuple return a string with the prefix highlighted
 391 # for now use square brackets; later might use ANSI colors (underline, bold)
 392 sub highlight_prefix {
 393         my $prefix = shift;
 394         my $remainder = shift;
 395
 396         if (!defined $prefix) {
 397                 return $remainder;
 398         }
 399
 400         if (!is_valid_prefix($prefix)) {
 401                 return "$prefix$remainder";
 402         }
 403
 404         if (!$menu_use_color) {
 405                 return "[$prefix]$remainder";
 406         }
 407
 408         return "$prompt_color$prefix$normal_color$remainder";
 409 }
 410
 411 sub error_msg {
 412         print STDERR colored $error_color, @_;
 413 }
 414
 415 sub list_and_choose {
 416         my ($opts, @stuff) = @_;
 417         my (@chosen, @return);
 418         my $i;
 419         my @prefixes = find_unique_prefixes(@stuff) unless $opts->{LIST_ONLY};
 420
 421       TOPLOOP:
 422         while (1) {
 423                 my $last_lf = 0;
 424
 425                 if ($opts->{HEADER}) {
 426                         if (!$opts->{LIST_FLAT}) {
 427                                 print "     ";
 428                         }
 429                         print colored $header_color, "$opts->{HEADER}\n";
 430                 }
 431                 for ($i = 0; $i < @stuff; $i++) {
 432                         my $chosen = $chosen[$i] ? '*' : ' ';
 433                         my $print = $stuff[$i];
 434                         my $ref = ref $print;
 435                         my $highlighted = highlight_prefix(@{$prefixes[$i]})
 436                             if @prefixes;
 437                         if ($ref eq 'ARRAY') {
 438                                 $print = $highlighted || $print->[0];
 439                         }
 440                         elsif ($ref eq 'HASH') {
 441                                 my $value = $highlighted || $print->{VALUE};
 442                                 $print = sprintf($status_fmt,
 443                                     $print->{INDEX},
 444                                     $print->{FILE},
 445                                     $value);
 446                         }
 447                         else {
 448                                 $print = $highlighted || $print;
 449                         }
 450                         printf("%s%2d: %s", $chosen, $i+1, $print);
 451                         if (($opts->{LIST_FLAT}) &&
 452                             (($i + 1) % ($opts->{LIST_FLAT}))) {
 453                                 print "\t";
 454                                 $last_lf = 0;
 455                         }
 456                         else {
 457                                 print "\n";
 458                                 $last_lf = 1;
 459                         }
 460                 }
 461                 if (!$last_lf) {
 462                         print "\n";
 463                 }
 464
 465                 return if ($opts->{LIST_ONLY});
 466
 467                 print colored $prompt_color, $opts->{PROMPT};
 468                 if ($opts->{SINGLETON}) {
 469                         print "> ";
 470                 }
 471                 else {
 472                         print ">> ";
 473                 }
 474                 my $line = <STDIN>;
 475                 if (!$line) {
 476                         print "\n";
 477                         $opts->{ON_EOF}->() if $opts->{ON_EOF};
 478                         last;
 479                 }
 480                 chomp $line;
 481                 last if $line eq '';
 482                 if ($line eq '?') {
 483                         $opts->{SINGLETON} ?
 484                             singleton_prompt_help_cmd() :
 485                             prompt_help_cmd();
 486                         next TOPLOOP;
 487                 }
 488                 for my $choice (split(/[\s,]+/, $line)) {
 489                         my $choose = 1;
 490                         my ($bottom, $top);
 491
 492                         # Input that begins with '-'; unchoose
 493                         if ($choice =~ s/^-//) {
 494                                 $choose = 0;
 495                         }
 496                         # A range can be specified like 5-7 or 5-.
 497                         if ($choice =~ /^(\d+)-(\d*)$/) {
 498                                 ($bottom, $top) = ($1, length($2) ? $2 : 1 + @stuff);
 499                         }
 500                         elsif ($choice =~ /^\d+$/) {
 501                                 $bottom = $top = $choice;
 502                         }
 503                         elsif ($choice eq '*') {
 504                                 $bottom = 1;
 505                                 $top = 1 + @stuff;
 506                         }
 507                         else {
 508                                 $bottom = $top = find_unique($choice, @stuff);
 509                                 if (!defined $bottom) {
 510                                         error_msg "Huh ($choice)?\n";
 511                                         next TOPLOOP;
 512                                 }
 513                         }
 514                         if ($opts->{SINGLETON} && $bottom != $top) {
 515                                 error_msg "Huh ($choice)?\n";
 516                                 next TOPLOOP;
 517                         }
 518                         for ($i = $bottom-1; $i <= $top-1; $i++) {
 519                                 next if (@stuff <= $i || $i < 0);
 520                                 $chosen[$i] = $choose;
 521                         }
 522                 }
 523                 last if ($opts->{IMMEDIATE} || $line eq '*');
 524         }
 525         for ($i = 0; $i < @stuff; $i++) {
 526                 if ($chosen[$i]) {
 527                         push @return, $stuff[$i];
 528                 }
 529         }
 530         return @return;
 531 }
 532
 533 sub singleton_prompt_help_cmd {
 534         print colored $help_color, <<\EOF ;
 535 Prompt help:
 536 1          - select a numbered item
 537 foo        - select item based on unique prefix
 538            - (empty) select nothing
 539 EOF
 540 }
 541
 542 sub prompt_help_cmd {
 543         print colored $help_color, <<\EOF ;
 544 Prompt help:
 545 1          - select a single item
 546 3-5        - select a range of items
 547 2-3,6-9    - select multiple ranges
 548 foo        - select item based on unique prefix
 549 -...       - unselect specified items
 550 *          - choose all items
 551            - (empty) finish selecting
 552 EOF
 553 }
 554
 555 sub status_cmd {
 556         list_and_choose({ LIST_ONLY => 1, HEADER => $status_head },
 557                         list_modified());
 558         print "\n";
 559 }
 560
 561 sub say_n_paths {
 562         my $did = shift @_;
 563         my $cnt = scalar @_;
 564         print "$did ";
 565         if (1 < $cnt) {
 566                 print "$cnt paths\n";
 567         }
 568         else {
 569                 print "one path\n";
 570         }
 571 }
 572
 573 sub update_cmd {
 574         my @mods = list_modified('file-only');
 575         return if (!@mods);
 576
 577         my @update = list_and_choose({ PROMPT => 'Update',
 578                                        HEADER => $status_head, },
 579                                      @mods);
 580         if (@update) {
 581                 system(qw(git update-index --add --remove --),
 582                        map { $_->{VALUE} } @update);
 583                 say_n_paths('updated', @update);
 584         }
 585         print "\n";
 586 }
 587
 588 sub revert_cmd {
 589         my @update = list_and_choose({ PROMPT => 'Revert',
 590                                        HEADER => $status_head, },
 591                                      list_modified());
 592         if (@update) {
 593                 if (is_initial_commit()) {
 594                         system(qw(git rm --cached),
 595                                 map { $_->{VALUE} } @update);
 596                 }
 597                 else {
 598                         my @lines = run_cmd_pipe(qw(git ls-tree HEAD --),
 599                                                  map { $_->{VALUE} } @update);
 600                         my $fh;
 601                         open $fh, '| git update-index --index-info'
 602                             or die;
 603                         for (@lines) {
 604                                 print $fh $_;
 605                         }
 606                         close($fh);
 607                         for (@update) {
 608                                 if ($_->{INDEX_ADDDEL} &&
 609                                     $_->{INDEX_ADDDEL} eq 'create') {
 610                                         system(qw(git update-index --force-remove --),
 611                                                $_->{VALUE});
 612                                         print "note: $_->{VALUE} is untracked now.\n";
 613                                 }
 614                         }
 615                 }
 616                 refresh();
 617                 say_n_paths('reverted', @update);
 618         }
 619         print "\n";
 620 }
 621
 622 sub add_untracked_cmd {
 623         my @add = list_and_choose({ PROMPT => 'Add untracked' },
 624                                   list_untracked());
 625         if (@add) {
 626                 system(qw(git update-index --add --), @add);
 627                 say_n_paths('added', @add);
 628         }
 629         print "\n";
 630 }
 631
 632 sub run_git_apply {
 633         my $cmd = shift;
 634         my $fh;
 635         open $fh, '| git ' . $cmd;
 636         print $fh @_;
 637         return close $fh;
 638 }
 639
 640 sub parse_diff {
 641         my ($path) = @_;
 642         my @diff_cmd = split(" ", $patch_mode_flavour{DIFF});
 643         my @diff = run_cmd_pipe("git", @diff_cmd, "--", $path);
 644         my @colored = ();
 645         if ($diff_use_color) {
 646                 @colored = run_cmd_pipe("git", @diff_cmd, qw(--color --), $path);
 647         }
 648         my (@hunk) = { TEXT => [], DISPLAY => [], TYPE => 'header' };
 649
 650         for (my $i = 0; $i < @diff; $i++) {
 651                 if ($diff[$i] =~ /^@@ /) {
 652                         push @hunk, { TEXT => [], DISPLAY => [],
 653                                 TYPE => 'hunk' };
 654                 }
 655                 push @{$hunk[-1]{TEXT}}, $diff[$i];
 656                 push @{$hunk[-1]{DISPLAY}},
 657                         ($diff_use_color ? $colored[$i] : $diff[$i]);
 658         }
 659         return @hunk;
 660 }
 661
 662 sub parse_diff_header {
 663         my $src = shift;
 664
 665         my $head = { TEXT => [], DISPLAY => [], TYPE => 'header' };
 666         my $mode = { TEXT => [], DISPLAY => [], TYPE => 'mode' };
 667
 668         for (my $i = 0; $i < @{$src->{TEXT}}; $i++) {
 669                 my $dest = $src->{TEXT}->[$i] =~ /^(old|new) mode (\d+)$/ ?
 670                         $mode : $head;
 671                 push @{$dest->{TEXT}}, $src->{TEXT}->[$i];
 672                 push @{$dest->{DISPLAY}}, $src->{DISPLAY}->[$i];
 673         }
 674         return ($head, $mode);
 675 }
 676
 677 sub hunk_splittable {
 678         my ($text) = @_;
 679
 680         my @s = split_hunk($text);
 681         return (1 < @s);
 682 }
 683
 684 sub parse_hunk_header {
 685         my ($line) = @_;
 686         my ($o_ofs, $o_cnt, $n_ofs, $n_cnt) =
 687             $line =~ /^@@ -(\d+)(?:,(\d+))? \+(\d+)(?:,(\d+))? @@/;
 688         $o_cnt = 1 unless defined $o_cnt;
 689         $n_cnt = 1 unless defined $n_cnt;
 690         return ($o_ofs, $o_cnt, $n_ofs, $n_cnt);
 691 }
 692
 693 sub split_hunk {
 694         my ($text, $display) = @_;
 695         my @split = ();
 696         if (!defined $display) {
 697                 $display = $text;
 698         }
 699         # If there are context lines in the middle of a hunk,
 700         # it can be split, but we would need to take care of
 701         # overlaps later.
 702
 703         my ($o_ofs, undef, $n_ofs) = parse_hunk_header($text->[0]);
 704         my $hunk_start = 1;
 705
 706       OUTER:
 707         while (1) {
 708                 my $next_hunk_start = undef;
 709                 my $i = $hunk_start - 1;
 710                 my $this = +{
 711                         TEXT => [],
 712                         DISPLAY => [],
 713                         TYPE => 'hunk',
 714                         OLD => $o_ofs,
 715                         NEW => $n_ofs,
 716                         OCNT => 0,
 717                         NCNT => 0,
 718                         ADDDEL => 0,
 719                         POSTCTX => 0,
 720                         USE => undef,
 721                 };
 722
 723                 while (++$i < @$text) {
 724                         my $line = $text->[$i];
 725                         my $display = $display->[$i];
 726                         if ($line =~ /^ /) {
 727                                 if ($this->{ADDDEL} &&
 728                                     !defined $next_hunk_start) {
 729                                         # We have seen leading context and
 730                                         # adds/dels and then here is another
 731                                         # context, which is trailing for this
 732                                         # split hunk and leading for the next
 733                                         # one.
 734                                         $next_hunk_start = $i;
 735                                 }
 736                                 push @{$this->{TEXT}}, $line;
 737                                 push @{$this->{DISPLAY}}, $display;
 738                                 $this->{OCNT}++;
 739                                 $this->{NCNT}++;
 740                                 if (defined $next_hunk_start) {
 741                                         $this->{POSTCTX}++;
 742                                 }
 743                                 next;
 744                         }
 745
 746                         # add/del
 747                         if (defined $next_hunk_start) {
 748                                 # We are done with the current hunk and
 749                                 # this is the first real change for the
 750                                 # next split one.
 751                                 $hunk_start = $next_hunk_start;
 752                                 $o_ofs = $this->{OLD} + $this->{OCNT};
 753                                 $n_ofs = $this->{NEW} + $this->{NCNT};
 754                                 $o_ofs -= $this->{POSTCTX};
 755                                 $n_ofs -= $this->{POSTCTX};
 756                                 push @split, $this;
 757                                 redo OUTER;
 758                         }
 759                         push @{$this->{TEXT}}, $line;
 760                         push @{$this->{DISPLAY}}, $display;
 761                         $this->{ADDDEL}++;
 762                         if ($line =~ /^-/) {
 763                                 $this->{OCNT}++;
 764                         }
 765                         else {
 766                                 $this->{NCNT}++;
 767                         }
 768                 }
 769
 770                 push @split, $this;
 771                 last;
 772         }
 773
 774         for my $hunk (@split) {
 775                 $o_ofs = $hunk->{OLD};
 776                 $n_ofs = $hunk->{NEW};
 777                 my $o_cnt = $hunk->{OCNT};
 778                 my $n_cnt = $hunk->{NCNT};
 779
 780                 my $head = ("@@ -$o_ofs" .
 781                             (($o_cnt != 1) ? ",$o_cnt" : '') .
 782                             " +$n_ofs" .
 783                             (($n_cnt != 1) ? ",$n_cnt" : '') .
 784                             " @@\n");
 785                 my $display_head = $head;
 786                 unshift @{$hunk->{TEXT}}, $head;
 787                 if ($diff_use_color) {
 788                         $display_head = colored($fraginfo_color, $head);
 789                 }
 790                 unshift @{$hunk->{DISPLAY}}, $display_head;
 791         }
 792         return @split;
 793 }
 794
 795 sub find_last_o_ctx {
 796         my ($it) = @_;
 797         my $text = $it->{TEXT};
 798         my ($o_ofs, $o_cnt) = parse_hunk_header($text->[0]);
 799         my $i = @{$text};
 800         my $last_o_ctx = $o_ofs + $o_cnt;
 801         while (0 < --$i) {
 802                 my $line = $text->[$i];
 803                 if ($line =~ /^ /) {
 804                         $last_o_ctx--;
 805                         next;
 806                 }
 807                 last;
 808         }
 809         return $last_o_ctx;
 810 }
 811
 812 sub merge_hunk {
 813         my ($prev, $this) = @_;
 814         my ($o0_ofs, $o0_cnt, $n0_ofs, $n0_cnt) =
 815             parse_hunk_header($prev->{TEXT}[0]);
 816         my ($o1_ofs, $o1_cnt, $n1_ofs, $n1_cnt) =
 817             parse_hunk_header($this->{TEXT}[0]);
 818
 819         my (@line, $i, $ofs, $o_cnt, $n_cnt);
 820         $ofs = $o0_ofs;
 821         $o_cnt = $n_cnt = 0;
 822         for ($i = 1; $i < @{$prev->{TEXT}}; $i++) {
 823                 my $line = $prev->{TEXT}[$i];
 824                 if ($line =~ /^\+/) {
 825                         $n_cnt++;
 826                         push @line, $line;
 827                         next;
 828                 }
 829
 830                 last if ($o1_ofs <= $ofs);
 831
 832                 $o_cnt++;
 833                 $ofs++;
 834                 if ($line =~ /^ /) {
 835                         $n_cnt++;
 836                 }
 837                 push @line, $line;
 838         }
 839
 840         for ($i = 1; $i < @{$this->{TEXT}}; $i++) {
 841                 my $line = $this->{TEXT}[$i];
 842                 if ($line =~ /^\+/) {
 843                         $n_cnt++;
 844                         push @line, $line;
 845                         next;
 846                 }
 847                 $ofs++;
 848                 $o_cnt++;
 849                 if ($line =~ /^ /) {
 850                         $n_cnt++;
 851                 }
 852                 push @line, $line;
 853         }
 854         my $head = ("@@ -$o0_ofs" .
 855                     (($o_cnt != 1) ? ",$o_cnt" : '') .
 856                     " +$n0_ofs" .
 857                     (($n_cnt != 1) ? ",$n_cnt" : '') .
 858                     " @@\n");
 859         @{$prev->{TEXT}} = ($head, @line);
 860 }
 861
 862 sub coalesce_overlapping_hunks {
 863         my (@in) = @_;
 864         my @out = ();
 865
 866         my ($last_o_ctx, $last_was_dirty);
 867
 868         for (grep { $_->{USE} } @in) {
 869                 my $text = $_->{TEXT};
 870                 my ($o_ofs) = parse_hunk_header($text->[0]);
 871                 if (defined $last_o_ctx &&
 872                     $o_ofs <= $last_o_ctx &&
 873                     !$_->{DIRTY} &&
 874                     !$last_was_dirty) {
 875                         merge_hunk($out[-1], $_);
 876                 }
 877                 else {
 878                         push @out, $_;
 879                 }
 880                 $last_o_ctx = find_last_o_ctx($out[-1]);
 881                 $last_was_dirty = $_->{DIRTY};
 882         }
 883         return @out;
 884 }
 885
 886 sub color_diff {
 887         return map {
 888                 colored((/^@/  ? $fraginfo_color :
 889                          /^\+/ ? $diff_new_color :
 890                          /^-/  ? $diff_old_color :
 891                          $diff_plain_color),
 892                         $_);
 893         } @_;
 894 }
 895
 896 sub edit_hunk_manually {
 897         my ($oldtext) = @_;
 898
 899         my $hunkfile = $repo->repo_path . "/addp-hunk-edit.diff";
 900         my $fh;
 901         open $fh, '>', $hunkfile
 902                 or die "failed to open hunk edit file for writing: " . $!;
 903         print $fh "# Manual hunk edit mode -- see bottom for a quick guide\n";
 904         print $fh @$oldtext;
 905         my $participle = $patch_mode_flavour{PARTICIPLE};
 906         print $fh <<EOF;
 907 # ---
 908 # To remove '-' lines, make them ' ' lines (context).
 909 # To remove '+' lines, delete them.
 910 # Lines starting with # will be removed.
 911 #
 912 # If the patch applies cleanly, the edited hunk will immediately be
 913 # marked for $participle. If it does not apply cleanly, you will be given
 914 # an opportunity to edit again. If all lines of the hunk are removed,
 915 # then the edit is aborted and the hunk is left unchanged.
 916 EOF
 917         close $fh;
 918
 919         my $editor = $ENV{GIT_EDITOR} || $repo->config("core.editor")
 920                 || $ENV{VISUAL} || $ENV{EDITOR} || "vi";
 921         system('sh', '-c', $editor.' "$@"', $editor, $hunkfile);
 922
 923         if ($? != 0) {
 924                 return undef;
 925         }
 926
 927         open $fh, '<', $hunkfile
 928                 or die "failed to open hunk edit file for reading: " . $!;
 929         my @newtext = grep { !/^#/ } <$fh>;
 930         close $fh;
 931         unlink $hunkfile;
 932
 933         # Abort if nothing remains
 934         if (!grep { /\S/ } @newtext) {
 935                 return undef;
 936         }
 937
 938         # Reinsert the first hunk header if the user accidentally deleted it
 939         if ($newtext[0] !~ /^@/) {
 940                 unshift @newtext, $oldtext->[0];
 941         }
 942         return \@newtext;
 943 }
 944
 945 sub diff_applies {
 946         my $fh;
 947         return run_git_apply($patch_mode_flavour{APPLY_CHECK} . ' --recount --check',
 948                              map { @{$_->{TEXT}} } @_);
 949 }
 950
 951 sub _restore_terminal_and_die {
 952         ReadMode 'restore';
 953         print "\n";
 954         exit 1;
 955 }
 956
 957 sub prompt_single_character {
 958         if ($use_readkey) {
 959                 local $SIG{TERM} = \&_restore_terminal_and_die;
 960                 local $SIG{INT} = \&_restore_terminal_and_die;
 961                 ReadMode 'cbreak';
 962                 my $key = ReadKey 0;
 963                 ReadMode 'restore';
 964                 print "$key" if defined $key;
 965                 print "\n";
 966                 return $key;
 967         } else {
 968                 return <STDIN>;
 969         }
 970 }
 971
 972 sub prompt_yesno {
 973         my ($prompt) = @_;
 974         while (1) {
 975                 print colored $prompt_color, $prompt;
 976                 my $line = prompt_single_character;
 977                 return 0 if $line =~ /^n/i;
 978                 return 1 if $line =~ /^y/i;
 979         }
 980 }
 981
 982 sub edit_hunk_loop {
 983         my ($head, $hunk, $ix) = @_;
 984         my $text = $hunk->[$ix]->{TEXT};
 985
 986         while (1) {
 987                 $text = edit_hunk_manually($text);
 988                 if (!defined $text) {
 989                         return undef;
 990                 }
 991                 my $newhunk = {
 992                         TEXT => $text,
 993                         TYPE => $hunk->[$ix]->{TYPE},
 994                         USE => 1,
 995                         DIRTY => 1,
 996                 };
 997                 if (diff_applies($head,
 998                                  @{$hunk}[0..$ix-1],
 999                                  $newhunk,
1000                                  @{$hunk}[$ix+1..$#{$hunk}])) {
1001                         $newhunk->{DISPLAY} = [color_diff(@{$text})];
1002                         return $newhunk;
1003                 }
1004                 else {
1005                         prompt_yesno(
1006                                 'Your edited hunk does not apply. Edit again '
1007                                 . '(saying "no" discards!) [y/n]? '
1008                                 ) or return undef;
1009                 }
1010         }
1011 }
1012
1013 sub help_patch_cmd {
1014         my $verb = lc $patch_mode_flavour{VERB};
1015         my $target = $patch_mode_flavour{TARGET};
1016         print colored $help_color, <<EOF ;
1017 y - $verb this hunk$target
1018 n - do not $verb this hunk$target
1019 q - quit, do not $verb this hunk nor any of the remaining ones
1020 a - $verb this and all the remaining hunks in the file
1021 d - do not $verb this hunk nor any of the remaining hunks in the file
1022 g - select a hunk to go to
1023 / - search for a hunk matching the given regex
1024 j - leave this hunk undecided, see next undecided hunk
1025 J - leave this hunk undecided, see next hunk
1026 k - leave this hunk undecided, see previous undecided hunk
1027 K - leave this hunk undecided, see previous hunk
1028 s - split the current hunk into smaller hunks
1029 e - manually edit the current hunk
1030 ? - print help
1031 EOF
1032 }
1033
1034 sub apply_patch {
1035         my $cmd = shift;
1036         my $ret = run_git_apply $cmd . ' --recount', @_;
1037         if (!$ret) {
1038                 print STDERR @_;
1039         }
1040         return $ret;
1041 }
1042
1043 sub patch_update_cmd {
1044         my @all_mods = list_modified($patch_mode_flavour{FILTER});
1045         my @mods = grep { !($_->{BINARY}) } @all_mods;
1046         my @them;
1047
1048         if (!@mods) {
1049                 if (@all_mods) {
1050                         print STDERR "Only binary files changed.\n";
1051                 } else {
1052                         print STDERR "No changes.\n";
1053                 }
1054                 return 0;
1055         }
1056         if ($patch_mode) {
1057                 @them = @mods;
1058         }
1059         else {
1060                 @them = list_and_choose({ PROMPT => 'Patch update',
1061                                           HEADER => $status_head, },
1062                                         @mods);
1063         }
1064         for (@them) {
1065                 return 0 if patch_update_file($_->{VALUE});
1066         }
1067 }
1068
1069 # Generate a one line summary of a hunk.
1070 sub summarize_hunk {
1071         my $rhunk = shift;
1072         my $summary = $rhunk->{TEXT}[0];
1073
1074         # Keep the line numbers, discard extra context.
1075         $summary =~ s/@@(.*?)@@.*/$1 /s;
1076         $summary .= " " x (20 - length $summary);
1077
1078         # Add some user context.
1079         for my $line (@{$rhunk->{TEXT}}) {
1080                 if ($line =~ m/^[+-].*\w/) {
1081                         $summary .= $line;
1082                         last;
1083                 }
1084         }
1085
1086         chomp $summary;
1087         return substr($summary, 0, 80) . "\n";
1088 }
1089
1090
1091 # Print a one-line summary of each hunk in the array ref in
1092 # the first argument, starting wih the index in the 2nd.
1093 sub display_hunks {
1094         my ($hunks, $i) = @_;
1095         my $ctr = 0;
1096         $i ||= 0;
1097         for (; $i < @$hunks && $ctr < 20; $i++, $ctr++) {
1098                 my $status = " ";
1099                 if (defined $hunks->[$i]{USE}) {
1100                         $status = $hunks->[$i]{USE} ? "+" : "-";
1101                 }
1102                 printf "%s%2d: %s",
1103                         $status,
1104                         $i + 1,
1105                         summarize_hunk($hunks->[$i]);
1106         }
1107         return $i;
1108 }
1109
1110 sub patch_update_file {
1111         my $quit = 0;
1112         my ($ix, $num);
1113         my $path = shift;
1114         my ($head, @hunk) = parse_diff($path);
1115         ($head, my $mode) = parse_diff_header($head);
1116         for (@{$head->{DISPLAY}}) {
1117                 print;
1118         }
1119
1120         if (@{$mode->{TEXT}}) {
1121                 unshift @hunk, $mode;
1122         }
1123
1124         $num = scalar @hunk;
1125         $ix = 0;
1126
1127         while (1) {
1128                 my ($prev, $next, $other, $undecided, $i);
1129                 $other = '';
1130
1131                 if ($num <= $ix) {
1132                         $ix = 0;
1133                 }
1134                 for ($i = 0; $i < $ix; $i++) {
1135                         if (!defined $hunk[$i]{USE}) {
1136                                 $prev = 1;
1137                                 $other .= ',k';
1138                                 last;
1139                         }
1140                 }
1141                 if ($ix) {
1142                         $other .= ',K';
1143                 }
1144                 for ($i = $ix + 1; $i < $num; $i++) {
1145                         if (!defined $hunk[$i]{USE}) {
1146                                 $next = 1;
1147                                 $other .= ',j';
1148                                 last;
1149                         }
1150                 }
1151                 if ($ix < $num - 1) {
1152                         $other .= ',J';
1153                 }
1154                 if ($num > 1) {
1155                         $other .= ',g';
1156                 }
1157                 for ($i = 0; $i < $num; $i++) {
1158                         if (!defined $hunk[$i]{USE}) {
1159                                 $undecided = 1;
1160                                 last;
1161                         }
1162                 }
1163                 last if (!$undecided);
1164
1165                 if ($hunk[$ix]{TYPE} eq 'hunk' &&
1166                     hunk_splittable($hunk[$ix]{TEXT})) {
1167                         $other .= ',s';
1168                 }
1169                 if ($hunk[$ix]{TYPE} eq 'hunk') {
1170                         $other .= ',e';
1171                 }
1172                 for (@{$hunk[$ix]{DISPLAY}}) {
1173                         print;
1174                 }
1175                 print colored $prompt_color, $patch_mode_flavour{VERB},
1176                   ($hunk[$ix]{TYPE} eq 'mode' ? ' mode change' : ' this hunk'),
1177                   $patch_mode_flavour{TARGET},
1178                   " [y,n,q,a,d,/$other,?]? ";
1179                 my $line = prompt_single_character;
1180                 if ($line) {
1181                         if ($line =~ /^y/i) {
1182                                 $hunk[$ix]{USE} = 1;
1183                         }
1184                         elsif ($line =~ /^n/i) {
1185                                 $hunk[$ix]{USE} = 0;
1186                         }
1187                         elsif ($line =~ /^a/i) {
1188                                 while ($ix < $num) {
1189                                         if (!defined $hunk[$ix]{USE}) {
1190                                                 $hunk[$ix]{USE} = 1;
1191                                         }
1192                                         $ix++;
1193                                 }
1194                                 next;
1195                         }
1196                         elsif ($other =~ /g/ && $line =~ /^g(.*)/) {
1197                                 my $response = $1;
1198                                 my $no = $ix > 10 ? $ix - 10 : 0;
1199                                 while ($response eq '') {
1200                                         my $extra = "";
1201                                         $no = display_hunks(\@hunk, $no);
1202                                         if ($no < $num) {
1203                                                 $extra = " (<ret> to see more)";
1204                                         }
1205                                         print "go to which hunk$extra? ";
1206                                         $response = <STDIN>;
1207                                         if (!defined $response) {
1208                                                 $response = '';
1209                                         }
1210                                         chomp $response;
1211                                 }
1212                                 if ($response !~ /^\s*\d+\s*$/) {
1213                                         error_msg "Invalid number: '$response'\n";
1214                                 } elsif (0 < $response && $response <= $num) {
1215                                         $ix = $response - 1;
1216                                 } else {
1217                                         error_msg "Sorry, only $num hunks available.\n";
1218                                 }
1219                                 next;
1220                         }
1221                         elsif ($line =~ /^d/i) {
1222                                 while ($ix < $num) {
1223                                         if (!defined $hunk[$ix]{USE}) {
1224                                                 $hunk[$ix]{USE} = 0;
1225                                         }
1226                                         $ix++;
1227                                 }
1228                                 next;
1229                         }
1230                         elsif ($line =~ /^q/i) {
1231                                 while ($ix < $num) {
1232                                         if (!defined $hunk[$ix]{USE}) {
1233                                                 $hunk[$ix]{USE} = 0;
1234                                         }
1235                                         $ix++;
1236                                 }
1237                                 $quit = 1;
1238                                 next;
1239                         }
1240                         elsif ($line =~ m|^/(.*)|) {
1241                                 my $regex = $1;
1242                                 if ($1 eq "") {
1243                                         print colored $prompt_color, "search for regex? ";
1244                                         $regex = <STDIN>;
1245                                         if (defined $regex) {
1246                                                 chomp $regex;
1247                                         }
1248                                 }
1249                                 my $search_string;
1250                                 eval {
1251                                         $search_string = qr{$regex}m;
1252                                 };
1253                                 if ($@) {
1254                                         my ($err,$exp) = ($@, $1);
1255                                         $err =~ s/ at .*git-add--interactive line \d+, <STDIN> line \d+.*$//;
1256                                         error_msg "Malformed search regexp $exp: $err\n";
1257                                         next;
1258                                 }
1259                                 my $iy = $ix;
1260                                 while (1) {
1261                                         my $text = join ("", @{$hunk[$iy]{TEXT}});
1262                                         last if ($text =~ $search_string);
1263                                         $iy++;
1264                                         $iy = 0 if ($iy >= $num);
1265                                         if ($ix == $iy) {
1266                                                 error_msg "No hunk matches the given pattern\n";
1267                                                 last;
1268                                         }
1269                                 }
1270                                 $ix = $iy;
1271                                 next;
1272                         }
1273                         elsif ($line =~ /^K/) {
1274                                 if ($other =~ /K/) {
1275                                         $ix--;
1276                                 }
1277                                 else {
1278                                         error_msg "No previous hunk\n";
1279                                 }
1280                                 next;
1281                         }
1282                         elsif ($line =~ /^J/) {
1283                                 if ($other =~ /J/) {
1284                                         $ix++;
1285                                 }
1286                                 else {
1287                                         error_msg "No next hunk\n";
1288                                 }
1289                                 next;
1290                         }
1291                         elsif ($line =~ /^k/) {
1292                                 if ($other =~ /k/) {
1293                                         while (1) {
1294                                                 $ix--;
1295                                                 last if (!$ix ||
1296                                                          !defined $hunk[$ix]{USE});
1297                                         }
1298                                 }
1299                                 else {
1300                                         error_msg "No previous hunk\n";
1301                                 }
1302                                 next;
1303                         }
1304                         elsif ($line =~ /^j/) {
1305                                 if ($other !~ /j/) {
1306                                         error_msg "No next hunk\n";
1307                                         next;
1308                                 }
1309                         }
1310                         elsif ($other =~ /s/ && $line =~ /^s/) {
1311                                 my @split = split_hunk($hunk[$ix]{TEXT}, $hunk[$ix]{DISPLAY});
1312                                 if (1 < @split) {
1313                                         print colored $header_color, "Split into ",
1314                                         scalar(@split), " hunks.\n";
1315                                 }
1316                                 splice (@hunk, $ix, 1, @split);
1317                                 $num = scalar @hunk;
1318                                 next;
1319                         }
1320                         elsif ($other =~ /e/ && $line =~ /^e/) {
1321                                 my $newhunk = edit_hunk_loop($head, \@hunk, $ix);
1322                                 if (defined $newhunk) {
1323                                         splice @hunk, $ix, 1, $newhunk;
1324                                 }
1325                         }
1326                         else {
1327                                 help_patch_cmd($other);
1328                                 next;
1329                         }
1330                         # soft increment
1331                         while (1) {
1332                                 $ix++;
1333                                 last if ($ix >= $num ||
1334                                          !defined $hunk[$ix]{USE});
1335                         }
1336                 }
1337         }
1338
1339         @hunk = coalesce_overlapping_hunks(@hunk);
1340
1341         my $n_lofs = 0;
1342         my @result = ();
1343         for (@hunk) {
1344                 if ($_->{USE}) {
1345                         push @result, @{$_->{TEXT}};
1346                 }
1347         }
1348
1349         if (@result) {
1350                 my $fh;
1351                 my @patch = (@{$head->{TEXT}}, @result);
1352                 my $apply_routine = $patch_mode_flavour{APPLY};
1353                 &$apply_routine(@patch);
1354                 refresh();
1355         }
1356
1357         print "\n";
1358         return $quit;
1359 }
1360
1361 sub diff_cmd {
1362         my @mods = list_modified('index-only');
1363         @mods = grep { !($_->{BINARY}) } @mods;
1364         return if (!@mods);
1365         my (@them) = list_and_choose({ PROMPT => 'Review diff',
1366                                      IMMEDIATE => 1,
1367                                      HEADER => $status_head, },
1368                                    @mods);
1369         return if (!@them);
1370         my $reference = is_initial_commit() ? get_empty_tree() : 'HEAD';
1371         system(qw(git diff -p --cached), $reference, '--',
1372                 map { $_->{VALUE} } @them);
1373 }
1374
1375 sub quit_cmd {
1376         print "Bye.\n";
1377         exit(0);
1378 }
1379
1380 sub help_cmd {
1381         print colored $help_color, <<\EOF ;
1382 status        - show paths with changes
1383 update        - add working tree state to the staged set of changes
1384 revert        - revert staged set of changes back to the HEAD version
1385 patch         - pick hunks and update selectively
1386 diff          - view diff between HEAD and index
1387 add untracked - add contents of untracked files to the staged set of changes
1388 EOF
1389 }
1390
1391 sub process_args {
1392         return unless @ARGV;
1393         my $arg = shift @ARGV;
1394         if ($arg eq "--patch") {
1395                 $patch_mode = 1;
1396                 $arg = shift @ARGV or die "missing --";
1397                 die "invalid argument $arg, expecting --"
1398                     unless $arg eq "--";
1399         }
1400         elsif ($arg ne "--") {
1401                 die "invalid argument $arg, expecting --";
1402         }
1403 }
1404
1405 sub main_loop {
1406         my @cmd = ([ 'status', \&status_cmd, ],
1407                    [ 'update', \&update_cmd, ],
1408                    [ 'revert', \&revert_cmd, ],
1409                    [ 'add untracked', \&add_untracked_cmd, ],
1410                    [ 'patch', \&patch_update_cmd, ],
1411                    [ 'diff', \&diff_cmd, ],
1412                    [ 'quit', \&quit_cmd, ],
1413                    [ 'help', \&help_cmd, ],
1414         );
1415         while (1) {
1416                 my ($it) = list_and_choose({ PROMPT => 'What now',
1417                                              SINGLETON => 1,
1418                                              LIST_FLAT => 4,
1419                                              HEADER => '*** Commands ***',
1420                                              ON_EOF => \&quit_cmd,
1421                                              IMMEDIATE => 1 }, @cmd);
1422                 if ($it) {
1423                         eval {
1424                                 $it->[1]->();
1425                         };
1426                         if ($@) {
1427                                 print "$@";
1428                         }
1429                 }
1430         }
1431 }
1432
1433 process_args();
1434 refresh();
1435 if ($patch_mode) {
1436         patch_update_cmd();
1437 }
1438 else {
1439         status_cmd();
1440         main_loop();
1441 }