1#!/usr/bin/perl
2use 5.008;
4use strict;
5use warnings;
6use Git;
7binmode(STDOUT, ":raw");
9my $repo = Git->repository();
11my $menu_use_color = $repo->get_colorbool('color.interactive');
13my ($prompt_color, $header_color, $help_color) =
14 $menu_use_color ? (
15 $repo->get_color('color.interactive.prompt', 'bold blue'),
16 $repo->get_color('color.interactive.header', 'bold'),
17 $repo->get_color('color.interactive.help', 'red bold'),
18 ) : ();
19my $error_color = ();
20if ($menu_use_color) {
21 my $help_color_spec = ($repo->config('color.interactive.help') or
22 'red bold');
23 $error_color = $repo->get_color('color.interactive.error',
24 $help_color_spec);
25}
26my $diff_use_color = $repo->get_colorbool('color.diff');
28my ($fraginfo_color) =
29 $diff_use_color ? (
30 $repo->get_color('color.diff.frag', 'cyan'),
31 ) : ();
32my ($diff_plain_color) =
33 $diff_use_color ? (
34 $repo->get_color('color.diff.plain', ''),
35 ) : ();
36my ($diff_old_color) =
37 $diff_use_color ? (
38 $repo->get_color('color.diff.old', 'red'),
39 ) : ();
40my ($diff_new_color) =
41 $diff_use_color ? (
42 $repo->get_color('color.diff.new', 'green'),
43 ) : ();
44my $normal_color = $repo->get_color("", "reset");
46my $diff_algorithm = $repo->config('diff.algorithm');
48my $diff_indent_heuristic = $repo->config_bool('diff.indentheuristic');
49my $diff_compaction_heuristic = $repo->config_bool('diff.compactionheuristic');
50my $diff_filter = $repo->config('interactive.difffilter');
51my $use_readkey = 0;
53my $use_termcap = 0;
54my %term_escapes;
55sub ReadMode;
57sub ReadKey;
58if ($repo->config_bool("interactive.singlekey")) {
59 eval {
60 require Term::ReadKey;
61 Term::ReadKey->import;
62 $use_readkey = 1;
63 };
64 if (!$use_readkey) {
65 print STDERR "missing Term::ReadKey, disabling interactive.singlekey\n";
66 }
67 eval {
68 require Term::Cap;
69 my $termcap = Term::Cap->Tgetent;
70 foreach (values %$termcap) {
71 $term_escapes{$_} = 1 if /^\e/;
72 }
73 $use_termcap = 1;
74 };
75}
76sub colored {
78 my $color = shift;
79 my $string = join("", @_);
80 if (defined $color) {
82 # Put a color code at the beginning of each line, a reset at the end
83 # color after newlines that are not at the end of the string
84 $string =~ s/(\n+)(.)/$1$color$2/g;
85 # reset before newlines
86 $string =~ s/(\n+)/$normal_color$1/g;
87 # codes at beginning and end (if necessary):
88 $string =~ s/^/$color/;
89 $string =~ s/$/$normal_color/ unless $string =~ /\n$/;
90 }
91 return $string;
92}
93# command line options
95my $patch_mode;
96my $patch_mode_revision;
97sub apply_patch;
99sub apply_patch_for_checkout_commit;
100sub apply_patch_for_stash;
101my %patch_modes = (
103 'stage' => {
104 DIFF => 'diff-files -p',
105 APPLY => sub { apply_patch 'apply --cached', @_; },
106 APPLY_CHECK => 'apply --cached',
107 VERB => 'Stage',
108 TARGET => '',
109 PARTICIPLE => 'staging',
110 FILTER => 'file-only',
111 IS_REVERSE => 0,
112 },
113 'stash' => {
114 DIFF => 'diff-index -p HEAD',
115 APPLY => sub { apply_patch 'apply --cached', @_; },
116 APPLY_CHECK => 'apply --cached',
117 VERB => 'Stash',
118 TARGET => '',
119 PARTICIPLE => 'stashing',
120 FILTER => undef,
121 IS_REVERSE => 0,
122 },
123 'reset_head' => {
124 DIFF => 'diff-index -p --cached',
125 APPLY => sub { apply_patch 'apply -R --cached', @_; },
126 APPLY_CHECK => 'apply -R --cached',
127 VERB => 'Unstage',
128 TARGET => '',
129 PARTICIPLE => 'unstaging',
130 FILTER => 'index-only',
131 IS_REVERSE => 1,
132 },
133 'reset_nothead' => {
134 DIFF => 'diff-index -R -p --cached',
135 APPLY => sub { apply_patch 'apply --cached', @_; },
136 APPLY_CHECK => 'apply --cached',
137 VERB => 'Apply',
138 TARGET => ' to index',
139 PARTICIPLE => 'applying',
140 FILTER => 'index-only',
141 IS_REVERSE => 0,
142 },
143 'checkout_index' => {
144 DIFF => 'diff-files -p',
145 APPLY => sub { apply_patch 'apply -R', @_; },
146 APPLY_CHECK => 'apply -R',
147 VERB => 'Discard',
148 TARGET => ' from worktree',
149 PARTICIPLE => 'discarding',
150 FILTER => 'file-only',
151 IS_REVERSE => 1,
152 },
153 'checkout_head' => {
154 DIFF => 'diff-index -p',
155 APPLY => sub { apply_patch_for_checkout_commit '-R', @_ },
156 APPLY_CHECK => 'apply -R',
157 VERB => 'Discard',
158 TARGET => ' from index and worktree',
159 PARTICIPLE => 'discarding',
160 FILTER => undef,
161 IS_REVERSE => 1,
162 },
163 'checkout_nothead' => {
164 DIFF => 'diff-index -R -p',
165 APPLY => sub { apply_patch_for_checkout_commit '', @_ },
166 APPLY_CHECK => 'apply',
167 VERB => 'Apply',
168 TARGET => ' to index and worktree',
169 PARTICIPLE => 'applying',
170 FILTER => undef,
171 IS_REVERSE => 0,
172 },
173);
174my %patch_mode_flavour = %{$patch_modes{stage}};
176sub run_cmd_pipe {
178 if ($^O eq 'MSWin32') {
179 my @invalid = grep {m/[":*]/} @_;
180 die "$^O does not support: @invalid\n" if @invalid;
181 my @args = map { m/ /o ? "\"$_\"": $_ } @_;
182 return qx{@args};
183 } else {
184 my $fh = undef;
185 open($fh, '-|', @_) or die;
186 return <$fh>;
187 }
188}
189my ($GIT_DIR) = run_cmd_pipe(qw(git rev-parse --git-dir));
191if (!defined $GIT_DIR) {
193 exit(1); # rev-parse would have already said "not a git repo"
194}
195chomp($GIT_DIR);
196my %cquote_map = (
198 "b" => chr(8),
199 "t" => chr(9),
200 "n" => chr(10),
201 "v" => chr(11),
202 "f" => chr(12),
203 "r" => chr(13),
204 "\\" => "\\",
205 "\042" => "\042",
206);
207sub unquote_path {
209 local ($_) = @_;
210 my ($retval, $remainder);
211 if (!/^\042(.*)\042$/) {
212 return $_;
213 }
214 ($_, $retval) = ($1, "");
215 while (/^([^\\]*)\\(.*)$/) {
216 $remainder = $2;
217 $retval .= $1;
218 for ($remainder) {
219 if (/^([0-3][0-7][0-7])(.*)$/) {
220 $retval .= chr(oct($1));
221 $_ = $2;
222 last;
223 }
224 if (/^([\\\042btnvfr])(.*)$/) {
225 $retval .= $cquote_map{$1};
226 $_ = $2;
227 last;
228 }
229 # This is malformed -- just return it as-is for now.
230 return $_[0];
231 }
232 $_ = $remainder;
233 }
234 $retval .= $_;
235 return $retval;
236}
237sub refresh {
239 my $fh;
240 open $fh, 'git update-index --refresh |'
241 or die;
242 while (<$fh>) {
243 ;# ignore 'needs update'
244 }
245 close $fh;
246}
247sub list_untracked {
249 map {
250 chomp $_;
251 unquote_path($_);
252 }
253 run_cmd_pipe(qw(git ls-files --others --exclude-standard --), @ARGV);
254}
255my $status_fmt = '%12s %12s %s';
257my $status_head = sprintf($status_fmt, 'staged', 'unstaged', 'path');
258{
260 my $initial;
261 sub is_initial_commit {
262 $initial = system('git rev-parse HEAD -- >/dev/null 2>&1') != 0
263 unless defined $initial;
264 return $initial;
265 }
266}
267sub get_empty_tree {
269 return '4b825dc642cb6eb9a060e54bf8d69288fbee4904';
270}
271sub get_diff_reference {
273 my $ref = shift;
274 if (defined $ref and $ref ne 'HEAD') {
275 return $ref;
276 } elsif (is_initial_commit()) {
277 return get_empty_tree();
278 } else {
279 return 'HEAD';
280 }
281}
282# Returns list of hashes, contents of each of which are:
284# VALUE: pathname
285# BINARY: is a binary path
286# INDEX: is index different from HEAD?
287# FILE: is file different from index?
288# INDEX_ADDDEL: is it add/delete between HEAD and index?
289# FILE_ADDDEL: is it add/delete between index and file?
290# UNMERGED: is the path unmerged
291sub list_modified {
293 my ($only) = @_;
294 my (%data, @return);
295 my ($add, $del, $adddel, $file);
296 my @tracked = ();
297 if (@ARGV) {
299 @tracked = map {
300 chomp $_;
301 unquote_path($_);
302 } run_cmd_pipe(qw(git ls-files --), @ARGV);
303 return if (!@tracked);
304 }
305 my $reference = get_diff_reference($patch_mode_revision);
307 for (run_cmd_pipe(qw(git diff-index --cached
308 --numstat --summary), $reference,
309 '--', @tracked)) {
310 if (($add, $del, $file) =
311 /^([-\d]+) ([-\d]+) (.*)/) {
312 my ($change, $bin);
313 $file = unquote_path($file);
314 if ($add eq '-' && $del eq '-') {
315 $change = 'binary';
316 $bin = 1;
317 }
318 else {
319 $change = "+$add/-$del";
320 }
321 $data{$file} = {
322 INDEX => $change,
323 BINARY => $bin,
324 FILE => 'nothing',
325 }
326 }
327 elsif (($adddel, $file) =
328 /^ (create|delete) mode [0-7]+ (.*)$/) {
329 $file = unquote_path($file);
330 $data{$file}{INDEX_ADDDEL} = $adddel;
331 }
332 }
333 for (run_cmd_pipe(qw(git diff-files --numstat --summary --raw --), @tracked)) {
335 if (($add, $del, $file) =
336 /^([-\d]+) ([-\d]+) (.*)/) {
337 $file = unquote_path($file);
338 my ($change, $bin);
339 if ($add eq '-' && $del eq '-') {
340 $change = 'binary';
341 $bin = 1;
342 }
343 else {
344 $change = "+$add/-$del";
345 }
346 $data{$file}{FILE} = $change;
347 if ($bin) {
348 $data{$file}{BINARY} = 1;
349 }
350 }
351 elsif (($adddel, $file) =
352 /^ (create|delete) mode [0-7]+ (.*)$/) {
353 $file = unquote_path($file);
354 $data{$file}{FILE_ADDDEL} = $adddel;
355 }
356 elsif (/^:[0-7]+ [0-7]+ [0-9a-f]+ [0-9a-f]+ (.) (.*)$/) {
357 $file = unquote_path($2);
358 if (!exists $data{$file}) {
359 $data{$file} = +{
360 INDEX => 'unchanged',
361 BINARY => 0,
362 };
363 }
364 if ($1 eq 'U') {
365 $data{$file}{UNMERGED} = 1;
366 }
367 }
368 }
369 for (sort keys %data) {
371 my $it = $data{$_};
372 if ($only) {
374 if ($only eq 'index-only') {
375 next if ($it->{INDEX} eq 'unchanged');
376 }
377 if ($only eq 'file-only') {
378 next if ($it->{FILE} eq 'nothing');
379 }
380 }
381 push @return, +{
382 VALUE => $_,
383 %$it,
384 };
385 }
386 return @return;
387}
388sub find_unique {
390 my ($string, @stuff) = @_;
391 my $found = undef;
392 for (my $i = 0; $i < @stuff; $i++) {
393 my $it = $stuff[$i];
394 my $hit = undef;
395 if (ref $it) {
396 if ((ref $it) eq 'ARRAY') {
397 $it = $it->[0];
398 }
399 else {
400 $it = $it->{VALUE};
401 }
402 }
403 eval {
404 if ($it =~ /^$string/) {
405 $hit = 1;
406 };
407 };
408 if (defined $hit && defined $found) {
409 return undef;
410 }
411 if ($hit) {
412 $found = $i + 1;
413 }
414 }
415 return $found;
416}
417# inserts string into trie and updates count for each character
419sub update_trie {
420 my ($trie, $string) = @_;
421 foreach (split //, $string) {
422 $trie = $trie->{$_} ||= {COUNT => 0};
423 $trie->{COUNT}++;
424 }
425}
426# returns an array of tuples (prefix, remainder)
428sub find_unique_prefixes {
429 my @stuff = @_;
430 my @return = ();
431 # any single prefix exceeding the soft limit is omitted
433 # if any prefix exceeds the hard limit all are omitted
434 # 0 indicates no limit
435 my $soft_limit = 0;
436 my $hard_limit = 3;
437 # build a trie modelling all possible options
439 my %trie;
440 foreach my $print (@stuff) {
441 if ((ref $print) eq 'ARRAY') {
442 $print = $print->[0];
443 }
444 elsif ((ref $print) eq 'HASH') {
445 $print = $print->{VALUE};
446 }
447 update_trie(\%trie, $print);
448 push @return, $print;
449 }
450 # use the trie to find the unique prefixes
452 for (my $i = 0; $i < @return; $i++) {
453 my $ret = $return[$i];
454 my @letters = split //, $ret;
455 my %search = %trie;
456 my ($prefix, $remainder);
457 my $j;
458 for ($j = 0; $j < @letters; $j++) {
459 my $letter = $letters[$j];
460 if ($search{$letter}{COUNT} == 1) {
461 $prefix = substr $ret, 0, $j + 1;
462 $remainder = substr $ret, $j + 1;
463 last;
464 }
465 else {
466 my $prefix = substr $ret, 0, $j;
467 return ()
468 if ($hard_limit && $j + 1 > $hard_limit);
469 }
470 %search = %{$search{$letter}};
471 }
472 if (ord($letters[0]) > 127 ||
473 ($soft_limit && $j + 1 > $soft_limit)) {
474 $prefix = undef;
475 $remainder = $ret;
476 }
477 $return[$i] = [$prefix, $remainder];
478 }
479 return @return;
480}
481# filters out prefixes which have special meaning to list_and_choose()
483sub is_valid_prefix {
484 my $prefix = shift;
485 return (defined $prefix) &&
486 !($prefix =~ /[\s,]/) && # separators
487 !($prefix =~ /^-/) && # deselection
488 !($prefix =~ /^\d+/) && # selection
489 ($prefix ne '*') && # "all" wildcard
490 ($prefix ne '?'); # prompt help
491}
492# given a prefix/remainder tuple return a string with the prefix highlighted
494# for now use square brackets; later might use ANSI colors (underline, bold)
495sub highlight_prefix {
496 my $prefix = shift;
497 my $remainder = shift;
498 if (!defined $prefix) {
500 return $remainder;
501 }
502 if (!is_valid_prefix($prefix)) {
504 return "$prefix$remainder";
505 }
506 if (!$menu_use_color) {
508 return "[$prefix]$remainder";
509 }
510 return "$prompt_color$prefix$normal_color$remainder";
512}
513sub error_msg {
515 print STDERR colored $error_color, @_;
516}
517sub list_and_choose {
519 my ($opts, @stuff) = @_;
520 my (@chosen, @return);
521 if (!@stuff) {
522 return @return;
523 }
524 my $i;
525 my @prefixes = find_unique_prefixes(@stuff) unless $opts->{LIST_ONLY};
526 TOPLOOP:
528 while (1) {
529 my $last_lf = 0;
530 if ($opts->{HEADER}) {
532 if (!$opts->{LIST_FLAT}) {
533 print " ";
534 }
535 print colored $header_color, "$opts->{HEADER}\n";
536 }
537 for ($i = 0; $i < @stuff; $i++) {
538 my $chosen = $chosen[$i] ? '*' : ' ';
539 my $print = $stuff[$i];
540 my $ref = ref $print;
541 my $highlighted = highlight_prefix(@{$prefixes[$i]})
542 if @prefixes;
543 if ($ref eq 'ARRAY') {
544 $print = $highlighted || $print->[0];
545 }
546 elsif ($ref eq 'HASH') {
547 my $value = $highlighted || $print->{VALUE};
548 $print = sprintf($status_fmt,
549 $print->{INDEX},
550 $print->{FILE},
551 $value);
552 }
553 else {
554 $print = $highlighted || $print;
555 }
556 printf("%s%2d: %s", $chosen, $i+1, $print);
557 if (($opts->{LIST_FLAT}) &&
558 (($i + 1) % ($opts->{LIST_FLAT}))) {
559 print "\t";
560 $last_lf = 0;
561 }
562 else {
563 print "\n";
564 $last_lf = 1;
565 }
566 }
567 if (!$last_lf) {
568 print "\n";
569 }
570 return if ($opts->{LIST_ONLY});
572 print colored $prompt_color, $opts->{PROMPT};
574 if ($opts->{SINGLETON}) {
575 print "> ";
576 }
577 else {
578 print ">> ";
579 }
580 my $line = <STDIN>;
581 if (!$line) {
582 print "\n";
583 $opts->{ON_EOF}->() if $opts->{ON_EOF};
584 last;
585 }
586 chomp $line;
587 last if $line eq '';
588 if ($line eq '?') {
589 $opts->{SINGLETON} ?
590 singleton_prompt_help_cmd() :
591 prompt_help_cmd();
592 next TOPLOOP;
593 }
594 for my $choice (split(/[\s,]+/, $line)) {
595 my $choose = 1;
596 my ($bottom, $top);
597 # Input that begins with '-'; unchoose
599 if ($choice =~ s/^-//) {
600 $choose = 0;
601 }
602 # A range can be specified like 5-7 or 5-.
603 if ($choice =~ /^(\d+)-(\d*)$/) {
604 ($bottom, $top) = ($1, length($2) ? $2 : 1 + @stuff);
605 }
606 elsif ($choice =~ /^\d+$/) {
607 $bottom = $top = $choice;
608 }
609 elsif ($choice eq '*') {
610 $bottom = 1;
611 $top = 1 + @stuff;
612 }
613 else {
614 $bottom = $top = find_unique($choice, @stuff);
615 if (!defined $bottom) {
616 error_msg "Huh ($choice)?\n";
617 next TOPLOOP;
618 }
619 }
620 if ($opts->{SINGLETON} && $bottom != $top) {
621 error_msg "Huh ($choice)?\n";
622 next TOPLOOP;
623 }
624 for ($i = $bottom-1; $i <= $top-1; $i++) {
625 next if (@stuff <= $i || $i < 0);
626 $chosen[$i] = $choose;
627 }
628 }
629 last if ($opts->{IMMEDIATE} || $line eq '*');
630 }
631 for ($i = 0; $i < @stuff; $i++) {
632 if ($chosen[$i]) {
633 push @return, $stuff[$i];
634 }
635 }
636 return @return;
637}
638sub singleton_prompt_help_cmd {
640 print colored $help_color, <<\EOF ;
641Prompt help:
6421 - select a numbered item
643foo - select item based on unique prefix
644 - (empty) select nothing
645EOF
646}
647sub prompt_help_cmd {
649 print colored $help_color, <<\EOF ;
650Prompt help:
6511 - select a single item
6523-5 - select a range of items
6532-3,6-9 - select multiple ranges
654foo - select item based on unique prefix
655-... - unselect specified items
656* - choose all items
657 - (empty) finish selecting
658EOF
659}
660sub status_cmd {
662 list_and_choose({ LIST_ONLY => 1, HEADER => $status_head },
663 list_modified());
664 print "\n";
665}
666sub say_n_paths {
668 my $did = shift @_;
669 my $cnt = scalar @_;
670 print "$did ";
671 if (1 < $cnt) {
672 print "$cnt paths\n";
673 }
674 else {
675 print "one path\n";
676 }
677}
678sub update_cmd {
680 my @mods = list_modified('file-only');
681 return if (!@mods);
682 my @update = list_and_choose({ PROMPT => 'Update',
684 HEADER => $status_head, },
685 @mods);
686 if (@update) {
687 system(qw(git update-index --add --remove --),
688 map { $_->{VALUE} } @update);
689 say_n_paths('updated', @update);
690 }
691 print "\n";
692}
693sub revert_cmd {
695 my @update = list_and_choose({ PROMPT => 'Revert',
696 HEADER => $status_head, },
697 list_modified());
698 if (@update) {
699 if (is_initial_commit()) {
700 system(qw(git rm --cached),
701 map { $_->{VALUE} } @update);
702 }
703 else {
704 my @lines = run_cmd_pipe(qw(git ls-tree HEAD --),
705 map { $_->{VALUE} } @update);
706 my $fh;
707 open $fh, '| git update-index --index-info'
708 or die;
709 for (@lines) {
710 print $fh $_;
711 }
712 close($fh);
713 for (@update) {
714 if ($_->{INDEX_ADDDEL} &&
715 $_->{INDEX_ADDDEL} eq 'create') {
716 system(qw(git update-index --force-remove --),
717 $_->{VALUE});
718 print "note: $_->{VALUE} is untracked now.\n";
719 }
720 }
721 }
722 refresh();
723 say_n_paths('reverted', @update);
724 }
725 print "\n";
726}
727sub add_untracked_cmd {
729 my @add = list_and_choose({ PROMPT => 'Add untracked' },
730 list_untracked());
731 if (@add) {
732 system(qw(git update-index --add --), @add);
733 say_n_paths('added', @add);
734 } else {
735 print "No untracked files.\n";
736 }
737 print "\n";
738}
739sub run_git_apply {
741 my $cmd = shift;
742 my $fh;
743 open $fh, '| git ' . $cmd . " --recount --allow-overlap";
744 print $fh @_;
745 return close $fh;
746}
747sub parse_diff {
749 my ($path) = @_;
750 my @diff_cmd = split(" ", $patch_mode_flavour{DIFF});
751 if (defined $diff_algorithm) {
752 splice @diff_cmd, 1, 0, "--diff-algorithm=${diff_algorithm}";
753 }
754 if ($diff_indent_heuristic) {
755 splice @diff_cmd, 1, 0, "--indent-heuristic";
756 } elsif ($diff_compaction_heuristic) {
757 splice @diff_cmd, 1, 0, "--compaction-heuristic";
758 }
759 if (defined $patch_mode_revision) {
760 push @diff_cmd, get_diff_reference($patch_mode_revision);
761 }
762 my @diff = run_cmd_pipe("git", @diff_cmd, "--", $path);
763 my @colored = ();
764 if ($diff_use_color) {
765 my @display_cmd = ("git", @diff_cmd, qw(--color --), $path);
766 if (defined $diff_filter) {
767 # quotemeta is overkill, but sufficient for shell-quoting
768 my $diff = join(' ', map { quotemeta } @display_cmd);
769 @display_cmd = ("$diff | $diff_filter");
770 }
771 @colored = run_cmd_pipe(@display_cmd);
773 }
774 my (@hunk) = { TEXT => [], DISPLAY => [], TYPE => 'header' };
775 for (my $i = 0; $i < @diff; $i++) {
777 if ($diff[$i] =~ /^@@ /) {
778 push @hunk, { TEXT => [], DISPLAY => [],
779 TYPE => 'hunk' };
780 }
781 push @{$hunk[-1]{TEXT}}, $diff[$i];
782 push @{$hunk[-1]{DISPLAY}},
783 (@colored ? $colored[$i] : $diff[$i]);
784 }
785 return @hunk;
786}
787sub parse_diff_header {
789 my $src = shift;
790 my $head = { TEXT => [], DISPLAY => [], TYPE => 'header' };
792 my $mode = { TEXT => [], DISPLAY => [], TYPE => 'mode' };
793 my $deletion = { TEXT => [], DISPLAY => [], TYPE => 'deletion' };
794 for (my $i = 0; $i < @{$src->{TEXT}}; $i++) {
796 my $dest =
797 $src->{TEXT}->[$i] =~ /^(old|new) mode (\d+)$/ ? $mode :
798 $src->{TEXT}->[$i] =~ /^deleted file/ ? $deletion :
799 $head;
800 push @{$dest->{TEXT}}, $src->{TEXT}->[$i];
801 push @{$dest->{DISPLAY}}, $src->{DISPLAY}->[$i];
802 }
803 return ($head, $mode, $deletion);
804}
805sub hunk_splittable {
807 my ($text) = @_;
808 my @s = split_hunk($text);
810 return (1 < @s);
811}
812sub parse_hunk_header {
814 my ($line) = @_;
815 my ($o_ofs, $o_cnt, $n_ofs, $n_cnt) =
816 $line =~ /^@@ -(\d+)(?:,(\d+))? \+(\d+)(?:,(\d+))? @@/;
817 $o_cnt = 1 unless defined $o_cnt;
818 $n_cnt = 1 unless defined $n_cnt;
819 return ($o_ofs, $o_cnt, $n_ofs, $n_cnt);
820}
821sub split_hunk {
823 my ($text, $display) = @_;
824 my @split = ();
825 if (!defined $display) {
826 $display = $text;
827 }
828 # If there are context lines in the middle of a hunk,
829 # it can be split, but we would need to take care of
830 # overlaps later.
831 my ($o_ofs, undef, $n_ofs) = parse_hunk_header($text->[0]);
833 my $hunk_start = 1;
834 OUTER:
836 while (1) {
837 my $next_hunk_start = undef;
838 my $i = $hunk_start - 1;
839 my $this = +{
840 TEXT => [],
841 DISPLAY => [],
842 TYPE => 'hunk',
843 OLD => $o_ofs,
844 NEW => $n_ofs,
845 OCNT => 0,
846 NCNT => 0,
847 ADDDEL => 0,
848 POSTCTX => 0,
849 USE => undef,
850 };
851 while (++$i < @$text) {
853 my $line = $text->[$i];
854 my $display = $display->[$i];
855 if ($line =~ /^ /) {
856 if ($this->{ADDDEL} &&
857 !defined $next_hunk_start) {
858 # We have seen leading context and
859 # adds/dels and then here is another
860 # context, which is trailing for this
861 # split hunk and leading for the next
862 # one.
863 $next_hunk_start = $i;
864 }
865 push @{$this->{TEXT}}, $line;
866 push @{$this->{DISPLAY}}, $display;
867 $this->{OCNT}++;
868 $this->{NCNT}++;
869 if (defined $next_hunk_start) {
870 $this->{POSTCTX}++;
871 }
872 next;
873 }
874 # add/del
876 if (defined $next_hunk_start) {
877 # We are done with the current hunk and
878 # this is the first real change for the
879 # next split one.
880 $hunk_start = $next_hunk_start;
881 $o_ofs = $this->{OLD} + $this->{OCNT};
882 $n_ofs = $this->{NEW} + $this->{NCNT};
883 $o_ofs -= $this->{POSTCTX};
884 $n_ofs -= $this->{POSTCTX};
885 push @split, $this;
886 redo OUTER;
887 }
888 push @{$this->{TEXT}}, $line;
889 push @{$this->{DISPLAY}}, $display;
890 $this->{ADDDEL}++;
891 if ($line =~ /^-/) {
892 $this->{OCNT}++;
893 }
894 else {
895 $this->{NCNT}++;
896 }
897 }
898 push @split, $this;
900 last;
901 }
902 for my $hunk (@split) {
904 $o_ofs = $hunk->{OLD};
905 $n_ofs = $hunk->{NEW};
906 my $o_cnt = $hunk->{OCNT};
907 my $n_cnt = $hunk->{NCNT};
908 my $head = ("@@ -$o_ofs" .
910 (($o_cnt != 1) ? ",$o_cnt" : '') .
911 " +$n_ofs" .
912 (($n_cnt != 1) ? ",$n_cnt" : '') .
913 " @@\n");
914 my $display_head = $head;
915 unshift @{$hunk->{TEXT}}, $head;
916 if ($diff_use_color) {
917 $display_head = colored($fraginfo_color, $head);
918 }
919 unshift @{$hunk->{DISPLAY}}, $display_head;
920 }
921 return @split;
922}
923sub find_last_o_ctx {
925 my ($it) = @_;
926 my $text = $it->{TEXT};
927 my ($o_ofs, $o_cnt) = parse_hunk_header($text->[0]);
928 my $i = @{$text};
929 my $last_o_ctx = $o_ofs + $o_cnt;
930 while (0 < --$i) {
931 my $line = $text->[$i];
932 if ($line =~ /^ /) {
933 $last_o_ctx--;
934 next;
935 }
936 last;
937 }
938 return $last_o_ctx;
939}
940sub merge_hunk {
942 my ($prev, $this) = @_;
943 my ($o0_ofs, $o0_cnt, $n0_ofs, $n0_cnt) =
944 parse_hunk_header($prev->{TEXT}[0]);
945 my ($o1_ofs, $o1_cnt, $n1_ofs, $n1_cnt) =
946 parse_hunk_header($this->{TEXT}[0]);
947 my (@line, $i, $ofs, $o_cnt, $n_cnt);
949 $ofs = $o0_ofs;
950 $o_cnt = $n_cnt = 0;
951 for ($i = 1; $i < @{$prev->{TEXT}}; $i++) {
952 my $line = $prev->{TEXT}[$i];
953 if ($line =~ /^\+/) {
954 $n_cnt++;
955 push @line, $line;
956 next;
957 }
958 last if ($o1_ofs <= $ofs);
960 $o_cnt++;
962 $ofs++;
963 if ($line =~ /^ /) {
964 $n_cnt++;
965 }
966 push @line, $line;
967 }
968 for ($i = 1; $i < @{$this->{TEXT}}; $i++) {
970 my $line = $this->{TEXT}[$i];
971 if ($line =~ /^\+/) {
972 $n_cnt++;
973 push @line, $line;
974 next;
975 }
976 $ofs++;
977 $o_cnt++;
978 if ($line =~ /^ /) {
979 $n_cnt++;
980 }
981 push @line, $line;
982 }
983 my $head = ("@@ -$o0_ofs" .
984 (($o_cnt != 1) ? ",$o_cnt" : '') .
985 " +$n0_ofs" .
986 (($n_cnt != 1) ? ",$n_cnt" : '') .
987 " @@\n");
988 @{$prev->{TEXT}} = ($head, @line);
989}
990sub coalesce_overlapping_hunks {
992 my (@in) = @_;
993 my @out = ();
994 my ($last_o_ctx, $last_was_dirty);
996 for (grep { $_->{USE} } @in) {
998 if ($_->{TYPE} ne 'hunk') {
999 push @out, $_;
1000 next;
1001 }
1002 my $text = $_->{TEXT};
1003 my ($o_ofs) = parse_hunk_header($text->[0]);
1004 if (defined $last_o_ctx &&
1005 $o_ofs <= $last_o_ctx &&
1006 !$_->{DIRTY} &&
1007 !$last_was_dirty) {
1008 merge_hunk($out[-1], $_);
1009 }
1010 else {
1011 push @out, $_;
1012 }
1013 $last_o_ctx = find_last_o_ctx($out[-1]);
1014 $last_was_dirty = $_->{DIRTY};
1015 }
1016 return @out;
1017}
1018sub reassemble_patch {
1020 my $head = shift;
1021 my @patch;
1022 # Include everything in the header except the beginning of the diff.
1024 push @patch, (grep { !/^[-+]{3}/ } @$head);
1025 # Then include any headers from the hunk lines, which must
1027 # come before any actual hunk.
1028 while (@_ && $_[0] !~ /^@/) {
1029 push @patch, shift;
1030 }
1031 # Then begin the diff.
1033 push @patch, grep { /^[-+]{3}/ } @$head;
1034 # And then the actual hunks.
1036 push @patch, @_;
1037 return @patch;
1039}
1040sub color_diff {
1042 return map {
1043 colored((/^@/ ? $fraginfo_color :
1044 /^\+/ ? $diff_new_color :
1045 /^-/ ? $diff_old_color :
1046 $diff_plain_color),
1047 $_);
1048 } @_;
1049}
1050sub edit_hunk_manually {
1052 my ($oldtext) = @_;
1053 my $hunkfile = $repo->repo_path . "/addp-hunk-edit.diff";
1055 my $fh;
1056 open $fh, '>', $hunkfile
1057 or die "failed to open hunk edit file for writing: " . $!;
1058 print $fh "# Manual hunk edit mode -- see bottom for a quick guide\n";
1059 print $fh @$oldtext;
1060 my $participle = $patch_mode_flavour{PARTICIPLE};
1061 my $is_reverse = $patch_mode_flavour{IS_REVERSE};
1062 my ($remove_plus, $remove_minus) = $is_reverse ? ('-', '+') : ('+', '-');
1063 print $fh <<EOF;
1064# ---
1065# To remove '$remove_minus' lines, make them ' ' lines (context).
1066# To remove '$remove_plus' lines, delete them.
1067# Lines starting with # will be removed.
1068#
1069# If the patch applies cleanly, the edited hunk will immediately be
1070# marked for $participle. If it does not apply cleanly, you will be given
1071# an opportunity to edit again. If all lines of the hunk are removed,
1072# then the edit is aborted and the hunk is left unchanged.
1073EOF
1074 close $fh;
1075 chomp(my $editor = run_cmd_pipe(qw(git var GIT_EDITOR)));
1077 system('sh', '-c', $editor.' "$@"', $editor, $hunkfile);
1078 if ($? != 0) {
1080 return undef;
1081 }
1082 open $fh, '<', $hunkfile
1084 or die "failed to open hunk edit file for reading: " . $!;
1085 my @newtext = grep { !/^#/ } <$fh>;
1086 close $fh;
1087 unlink $hunkfile;
1088 # Abort if nothing remains
1090 if (!grep { /\S/ } @newtext) {
1091 return undef;
1092 }
1093 # Reinsert the first hunk header if the user accidentally deleted it
1095 if ($newtext[0] !~ /^@/) {
1096 unshift @newtext, $oldtext->[0];
1097 }
1098 return \@newtext;
1099}
1100sub diff_applies {
1102 return run_git_apply($patch_mode_flavour{APPLY_CHECK} . ' --check',
1103 map { @{$_->{TEXT}} } @_);
1104}
1105sub _restore_terminal_and_die {
1107 ReadMode 'restore';
1108 print "\n";
1109 exit 1;
1110}
1111sub prompt_single_character {
1113 if ($use_readkey) {
1114 local $SIG{TERM} = \&_restore_terminal_and_die;
1115 local $SIG{INT} = \&_restore_terminal_and_die;
1116 ReadMode 'cbreak';
1117 my $key = ReadKey 0;
1118 ReadMode 'restore';
1119 if ($use_termcap and $key eq "\e") {
1120 while (!defined $term_escapes{$key}) {
1121 my $next = ReadKey 0.5;
1122 last if (!defined $next);
1123 $key .= $next;
1124 }
1125 $key =~ s/\e/^[/;
1126 }
1127 print "$key" if defined $key;
1128 print "\n";
1129 return $key;
1130 } else {
1131 return <STDIN>;
1132 }
1133}
1134sub prompt_yesno {
1136 my ($prompt) = @_;
1137 while (1) {
1138 print colored $prompt_color, $prompt;
1139 my $line = prompt_single_character;
1140 return 0 if $line =~ /^n/i;
1141 return 1 if $line =~ /^y/i;
1142 }
1143}
1144sub edit_hunk_loop {
1146 my ($head, $hunk, $ix) = @_;
1147 my $text = $hunk->[$ix]->{TEXT};
1148 while (1) {
1150 $text = edit_hunk_manually($text);
1151 if (!defined $text) {
1152 return undef;
1153 }
1154 my $newhunk = {
1155 TEXT => $text,
1156 TYPE => $hunk->[$ix]->{TYPE},
1157 USE => 1,
1158 DIRTY => 1,
1159 };
1160 if (diff_applies($head,
1161 @{$hunk}[0..$ix-1],
1162 $newhunk,
1163 @{$hunk}[$ix+1..$#{$hunk}])) {
1164 $newhunk->{DISPLAY} = [color_diff(@{$text})];
1165 return $newhunk;
1166 }
1167 else {
1168 prompt_yesno(
1169 'Your edited hunk does not apply. Edit again '
1170 . '(saying "no" discards!) [y/n]? '
1171 ) or return undef;
1172 }
1173 }
1174}
1175sub help_patch_cmd {
1177 my $verb = lc $patch_mode_flavour{VERB};
1178 my $target = $patch_mode_flavour{TARGET};
1179 print colored $help_color, <<EOF ;
1180y - $verb this hunk$target
1181n - do not $verb this hunk$target
1182q - quit; do not $verb this hunk or any of the remaining ones
1183a - $verb this hunk and all later hunks in the file
1184d - do not $verb this hunk or any of the later hunks in the file
1185g - select a hunk to go to
1186/ - search for a hunk matching the given regex
1187j - leave this hunk undecided, see next undecided hunk
1188J - leave this hunk undecided, see next hunk
1189k - leave this hunk undecided, see previous undecided hunk
1190K - leave this hunk undecided, see previous hunk
1191s - split the current hunk into smaller hunks
1192e - manually edit the current hunk
1193? - print help
1194EOF
1195}
1196sub apply_patch {
1198 my $cmd = shift;
1199 my $ret = run_git_apply $cmd, @_;
1200 if (!$ret) {
1201 print STDERR @_;
1202 }
1203 return $ret;
1204}
1205sub apply_patch_for_checkout_commit {
1207 my $reverse = shift;
1208 my $applies_index = run_git_apply 'apply '.$reverse.' --cached --check', @_;
1209 my $applies_worktree = run_git_apply 'apply '.$reverse.' --check', @_;
1210 if ($applies_worktree && $applies_index) {
1212 run_git_apply 'apply '.$reverse.' --cached', @_;
1213 run_git_apply 'apply '.$reverse, @_;
1214 return 1;
1215 } elsif (!$applies_index) {
1216 print colored $error_color, "The selected hunks do not apply to the index!\n";
1217 if (prompt_yesno "Apply them to the worktree anyway? ") {
1218 return run_git_apply 'apply '.$reverse, @_;
1219 } else {
1220 print colored $error_color, "Nothing was applied.\n";
1221 return 0;
1222 }
1223 } else {
1224 print STDERR @_;
1225 return 0;
1226 }
1227}
1228sub patch_update_cmd {
1230 my @all_mods = list_modified($patch_mode_flavour{FILTER});
1231 error_msg "ignoring unmerged: $_->{VALUE}\n"
1232 for grep { $_->{UNMERGED} } @all_mods;
1233 @all_mods = grep { !$_->{UNMERGED} } @all_mods;
1234 my @mods = grep { !($_->{BINARY}) } @all_mods;
1236 my @them;
1237 if (!@mods) {
1239 if (@all_mods) {
1240 print STDERR "Only binary files changed.\n";
1241 } else {
1242 print STDERR "No changes.\n";
1243 }
1244 return 0;
1245 }
1246 if ($patch_mode) {
1247 @them = @mods;
1248 }
1249 else {
1250 @them = list_and_choose({ PROMPT => 'Patch update',
1251 HEADER => $status_head, },
1252 @mods);
1253 }
1254 for (@them) {
1255 return 0 if patch_update_file($_->{VALUE});
1256 }
1257}
1258# Generate a one line summary of a hunk.
1260sub summarize_hunk {
1261 my $rhunk = shift;
1262 my $summary = $rhunk->{TEXT}[0];
1263 # Keep the line numbers, discard extra context.
1265 $summary =~ s/@@(.*?)@@.*/$1 /s;
1266 $summary .= " " x (20 - length $summary);
1267 # Add some user context.
1269 for my $line (@{$rhunk->{TEXT}}) {
1270 if ($line =~ m/^[+-].*\w/) {
1271 $summary .= $line;
1272 last;
1273 }
1274 }
1275 chomp $summary;
1277 return substr($summary, 0, 80) . "\n";
1278}
1279# Print a one-line summary of each hunk in the array ref in
1282# the first argument, starting with the index in the 2nd.
1283sub display_hunks {
1284 my ($hunks, $i) = @_;
1285 my $ctr = 0;
1286 $i ||= 0;
1287 for (; $i < @$hunks && $ctr < 20; $i++, $ctr++) {
1288 my $status = " ";
1289 if (defined $hunks->[$i]{USE}) {
1290 $status = $hunks->[$i]{USE} ? "+" : "-";
1291 }
1292 printf "%s%2d: %s",
1293 $status,
1294 $i + 1,
1295 summarize_hunk($hunks->[$i]);
1296 }
1297 return $i;
1298}
1299sub patch_update_file {
1301 my $quit = 0;
1302 my ($ix, $num);
1303 my $path = shift;
1304 my ($head, @hunk) = parse_diff($path);
1305 ($head, my $mode, my $deletion) = parse_diff_header($head);
1306 for (@{$head->{DISPLAY}}) {
1307 print;
1308 }
1309 if (@{$mode->{TEXT}}) {
1311 unshift @hunk, $mode;
1312 }
1313 if (@{$deletion->{TEXT}}) {
1314 foreach my $hunk (@hunk) {
1315 push @{$deletion->{TEXT}}, @{$hunk->{TEXT}};
1316 push @{$deletion->{DISPLAY}}, @{$hunk->{DISPLAY}};
1317 }
1318 @hunk = ($deletion);
1319 }
1320 $num = scalar @hunk;
1322 $ix = 0;
1323 while (1) {
1325 my ($prev, $next, $other, $undecided, $i);
1326 $other = '';
1327 if ($num <= $ix) {
1329 $ix = 0;
1330 }
1331 for ($i = 0; $i < $ix; $i++) {
1332 if (!defined $hunk[$i]{USE}) {
1333 $prev = 1;
1334 $other .= ',k';
1335 last;
1336 }
1337 }
1338 if ($ix) {
1339 $other .= ',K';
1340 }
1341 for ($i = $ix + 1; $i < $num; $i++) {
1342 if (!defined $hunk[$i]{USE}) {
1343 $next = 1;
1344 $other .= ',j';
1345 last;
1346 }
1347 }
1348 if ($ix < $num - 1) {
1349 $other .= ',J';
1350 }
1351 if ($num > 1) {
1352 $other .= ',g';
1353 }
1354 for ($i = 0; $i < $num; $i++) {
1355 if (!defined $hunk[$i]{USE}) {
1356 $undecided = 1;
1357 last;
1358 }
1359 }
1360 last if (!$undecided);
1361 if ($hunk[$ix]{TYPE} eq 'hunk' &&
1363 hunk_splittable($hunk[$ix]{TEXT})) {
1364 $other .= ',s';
1365 }
1366 if ($hunk[$ix]{TYPE} eq 'hunk') {
1367 $other .= ',e';
1368 }
1369 for (@{$hunk[$ix]{DISPLAY}}) {
1370 print;
1371 }
1372 print colored $prompt_color, $patch_mode_flavour{VERB},
1373 ($hunk[$ix]{TYPE} eq 'mode' ? ' mode change' :
1374 $hunk[$ix]{TYPE} eq 'deletion' ? ' deletion' :
1375 ' this hunk'),
1376 $patch_mode_flavour{TARGET},
1377 " [y,n,q,a,d,/$other,?]? ";
1378 my $line = prompt_single_character;
1379 last unless defined $line;
1380 if ($line) {
1381 if ($line =~ /^y/i) {
1382 $hunk[$ix]{USE} = 1;
1383 }
1384 elsif ($line =~ /^n/i) {
1385 $hunk[$ix]{USE} = 0;
1386 }
1387 elsif ($line =~ /^a/i) {
1388 while ($ix < $num) {
1389 if (!defined $hunk[$ix]{USE}) {
1390 $hunk[$ix]{USE} = 1;
1391 }
1392 $ix++;
1393 }
1394 next;
1395 }
1396 elsif ($other =~ /g/ && $line =~ /^g(.*)/) {
1397 my $response = $1;
1398 my $no = $ix > 10 ? $ix - 10 : 0;
1399 while ($response eq '') {
1400 my $extra = "";
1401 $no = display_hunks(\@hunk, $no);
1402 if ($no < $num) {
1403 $extra = " (<ret> to see more)";
1404 }
1405 print "go to which hunk$extra? ";
1406 $response = <STDIN>;
1407 if (!defined $response) {
1408 $response = '';
1409 }
1410 chomp $response;
1411 }
1412 if ($response !~ /^\s*\d+\s*$/) {
1413 error_msg "Invalid number: '$response'\n";
1414 } elsif (0 < $response && $response <= $num) {
1415 $ix = $response - 1;
1416 } else {
1417 error_msg "Sorry, only $num hunks available.\n";
1418 }
1419 next;
1420 }
1421 elsif ($line =~ /^d/i) {
1422 while ($ix < $num) {
1423 if (!defined $hunk[$ix]{USE}) {
1424 $hunk[$ix]{USE} = 0;
1425 }
1426 $ix++;
1427 }
1428 next;
1429 }
1430 elsif ($line =~ /^q/i) {
1431 for ($i = 0; $i < $num; $i++) {
1432 if (!defined $hunk[$i]{USE}) {
1433 $hunk[$i]{USE} = 0;
1434 }
1435 }
1436 $quit = 1;
1437 last;
1438 }
1439 elsif ($line =~ m|^/(.*)|) {
1440 my $regex = $1;
1441 if ($1 eq "") {
1442 print colored $prompt_color, "search for regex? ";
1443 $regex = <STDIN>;
1444 if (defined $regex) {
1445 chomp $regex;
1446 }
1447 }
1448 my $search_string;
1449 eval {
1450 $search_string = qr{$regex}m;
1451 };
1452 if ($@) {
1453 my ($err,$exp) = ($@, $1);
1454 $err =~ s/ at .*git-add--interactive line \d+, <STDIN> line \d+.*$//;
1455 error_msg "Malformed search regexp $exp: $err\n";
1456 next;
1457 }
1458 my $iy = $ix;
1459 while (1) {
1460 my $text = join ("", @{$hunk[$iy]{TEXT}});
1461 last if ($text =~ $search_string);
1462 $iy++;
1463 $iy = 0 if ($iy >= $num);
1464 if ($ix == $iy) {
1465 error_msg "No hunk matches the given pattern\n";
1466 last;
1467 }
1468 }
1469 $ix = $iy;
1470 next;
1471 }
1472 elsif ($line =~ /^K/) {
1473 if ($other =~ /K/) {
1474 $ix--;
1475 }
1476 else {
1477 error_msg "No previous hunk\n";
1478 }
1479 next;
1480 }
1481 elsif ($line =~ /^J/) {
1482 if ($other =~ /J/) {
1483 $ix++;
1484 }
1485 else {
1486 error_msg "No next hunk\n";
1487 }
1488 next;
1489 }
1490 elsif ($line =~ /^k/) {
1491 if ($other =~ /k/) {
1492 while (1) {
1493 $ix--;
1494 last if (!$ix ||
1495 !defined $hunk[$ix]{USE});
1496 }
1497 }
1498 else {
1499 error_msg "No previous hunk\n";
1500 }
1501 next;
1502 }
1503 elsif ($line =~ /^j/) {
1504 if ($other !~ /j/) {
1505 error_msg "No next hunk\n";
1506 next;
1507 }
1508 }
1509 elsif ($other =~ /s/ && $line =~ /^s/) {
1510 my @split = split_hunk($hunk[$ix]{TEXT}, $hunk[$ix]{DISPLAY});
1511 if (1 < @split) {
1512 print colored $header_color, "Split into ",
1513 scalar(@split), " hunks.\n";
1514 }
1515 splice (@hunk, $ix, 1, @split);
1516 $num = scalar @hunk;
1517 next;
1518 }
1519 elsif ($other =~ /e/ && $line =~ /^e/) {
1520 my $newhunk = edit_hunk_loop($head, \@hunk, $ix);
1521 if (defined $newhunk) {
1522 splice @hunk, $ix, 1, $newhunk;
1523 }
1524 }
1525 else {
1526 help_patch_cmd($other);
1527 next;
1528 }
1529 # soft increment
1530 while (1) {
1531 $ix++;
1532 last if ($ix >= $num ||
1533 !defined $hunk[$ix]{USE});
1534 }
1535 }
1536 }
1537 @hunk = coalesce_overlapping_hunks(@hunk);
1539 my $n_lofs = 0;
1541 my @result = ();
1542 for (@hunk) {
1543 if ($_->{USE}) {
1544 push @result, @{$_->{TEXT}};
1545 }
1546 }
1547 if (@result) {
1549 my @patch = reassemble_patch($head->{TEXT}, @result);
1550 my $apply_routine = $patch_mode_flavour{APPLY};
1551 &$apply_routine(@patch);
1552 refresh();
1553 }
1554 print "\n";
1556 return $quit;
1557}
1558sub diff_cmd {
1560 my @mods = list_modified('index-only');
1561 @mods = grep { !($_->{BINARY}) } @mods;
1562 return if (!@mods);
1563 my (@them) = list_and_choose({ PROMPT => 'Review diff',
1564 IMMEDIATE => 1,
1565 HEADER => $status_head, },
1566 @mods);
1567 return if (!@them);
1568 my $reference = is_initial_commit() ? get_empty_tree() : 'HEAD';
1569 system(qw(git diff -p --cached), $reference, '--',
1570 map { $_->{VALUE} } @them);
1571}
1572sub quit_cmd {
1574 print "Bye.\n";
1575 exit(0);
1576}
1577sub help_cmd {
1579 print colored $help_color, <<\EOF ;
1580status - show paths with changes
1581update - add working tree state to the staged set of changes
1582revert - revert staged set of changes back to the HEAD version
1583patch - pick hunks and update selectively
1584diff - view diff between HEAD and index
1585add untracked - add contents of untracked files to the staged set of changes
1586EOF
1587}
1588sub process_args {
1590 return unless @ARGV;
1591 my $arg = shift @ARGV;
1592 if ($arg =~ /--patch(?:=(.*))?/) {
1593 if (defined $1) {
1594 if ($1 eq 'reset') {
1595 $patch_mode = 'reset_head';
1596 $patch_mode_revision = 'HEAD';
1597 $arg = shift @ARGV or die "missing --";
1598 if ($arg ne '--') {
1599 $patch_mode_revision = $arg;
1600 $patch_mode = ($arg eq 'HEAD' ?
1601 'reset_head' : 'reset_nothead');
1602 $arg = shift @ARGV or die "missing --";
1603 }
1604 } elsif ($1 eq 'checkout') {
1605 $arg = shift @ARGV or die "missing --";
1606 if ($arg eq '--') {
1607 $patch_mode = 'checkout_index';
1608 } else {
1609 $patch_mode_revision = $arg;
1610 $patch_mode = ($arg eq 'HEAD' ?
1611 'checkout_head' : 'checkout_nothead');
1612 $arg = shift @ARGV or die "missing --";
1613 }
1614 } elsif ($1 eq 'stage' or $1 eq 'stash') {
1615 $patch_mode = $1;
1616 $arg = shift @ARGV or die "missing --";
1617 } else {
1618 die "unknown --patch mode: $1";
1619 }
1620 } else {
1621 $patch_mode = 'stage';
1622 $arg = shift @ARGV or die "missing --";
1623 }
1624 die "invalid argument $arg, expecting --"
1625 unless $arg eq "--";
1626 %patch_mode_flavour = %{$patch_modes{$patch_mode}};
1627 }
1628 elsif ($arg ne "--") {
1629 die "invalid argument $arg, expecting --";
1630 }
1631}
1632sub main_loop {
1634 my @cmd = ([ 'status', \&status_cmd, ],
1635 [ 'update', \&update_cmd, ],
1636 [ 'revert', \&revert_cmd, ],
1637 [ 'add untracked', \&add_untracked_cmd, ],
1638 [ 'patch', \&patch_update_cmd, ],
1639 [ 'diff', \&diff_cmd, ],
1640 [ 'quit', \&quit_cmd, ],
1641 [ 'help', \&help_cmd, ],
1642 );
1643 while (1) {
1644 my ($it) = list_and_choose({ PROMPT => 'What now',
1645 SINGLETON => 1,
1646 LIST_FLAT => 4,
1647 HEADER => '*** Commands ***',
1648 ON_EOF => \&quit_cmd,
1649 IMMEDIATE => 1 }, @cmd);
1650 if ($it) {
1651 eval {
1652 $it->[1]->();
1653 };
1654 if ($@) {
1655 print "$@";
1656 }
1657 }
1658 }
1659}
1660process_args();
1662refresh();
1663if ($patch_mode) {
1664 patch_update_cmd();
1665}
1666else {
1667 status_cmd();
1668 main_loop();
1669}