1#!/usr/bin/perl -w
2use strict;
4use Git;
5binmode(STDOUT, ":raw");
7my $repo = Git->repository();
9my $menu_use_color = $repo->get_colorbool('color.interactive');
11my ($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 ) : ();
17my $error_color = ();
18if ($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}
24my $diff_use_color = $repo->get_colorbool('color.diff');
26my ($fraginfo_color) =
27 $diff_use_color ? (
28 $repo->get_color('color.diff.frag', 'cyan'),
29 ) : ();
30my ($diff_plain_color) =
31 $diff_use_color ? (
32 $repo->get_color('color.diff.plain', ''),
33 ) : ();
34my ($diff_old_color) =
35 $diff_use_color ? (
36 $repo->get_color('color.diff.old', 'red'),
37 ) : ();
38my ($diff_new_color) =
39 $diff_use_color ? (
40 $repo->get_color('color.diff.new', 'green'),
41 ) : ();
42my $normal_color = $repo->get_color("", "reset");
44my $use_readkey = 0;
46sub ReadMode;
47sub ReadKey;
48if ($repo->config_bool("interactive.singlekey")) {
49 eval {
50 require Term::ReadKey;
51 Term::ReadKey->import;
52 $use_readkey = 1;
53 };
54}
55sub colored {
57 my $color = shift;
58 my $string = join("", @_);
59 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# command line options
74my $patch_mode;
75sub run_cmd_pipe {
77 if ($^O eq 'MSWin32' || $^O eq 'msys') {
78 my @invalid = grep {m/[":*]/} @_;
79 die "$^O does not support: @invalid\n" if @invalid;
80 my @args = map { m/ /o ? "\"$_\"": $_ } @_;
81 return qx{@args};
82 } else {
83 my $fh = undef;
84 open($fh, '-|', @_) or die;
85 return <$fh>;
86 }
87}
88my ($GIT_DIR) = run_cmd_pipe(qw(git rev-parse --git-dir));
90if (!defined $GIT_DIR) {
92 exit(1); # rev-parse would have already said "not a git repo"
93}
94chomp($GIT_DIR);
95my %cquote_map = (
97 "b" => chr(8),
98 "t" => chr(9),
99 "n" => chr(10),
100 "v" => chr(11),
101 "f" => chr(12),
102 "r" => chr(13),
103 "\\" => "\\",
104 "\042" => "\042",
105);
106sub unquote_path {
108 local ($_) = @_;
109 my ($retval, $remainder);
110 if (!/^\042(.*)\042$/) {
111 return $_;
112 }
113 ($_, $retval) = ($1, "");
114 while (/^([^\\]*)\\(.*)$/) {
115 $remainder = $2;
116 $retval .= $1;
117 for ($remainder) {
118 if (/^([0-3][0-7][0-7])(.*)$/) {
119 $retval .= chr(oct($1));
120 $_ = $2;
121 last;
122 }
123 if (/^([\\\042btnvfr])(.*)$/) {
124 $retval .= $cquote_map{$1};
125 $_ = $2;
126 last;
127 }
128 # This is malformed -- just return it as-is for now.
129 return $_[0];
130 }
131 $_ = $remainder;
132 }
133 $retval .= $_;
134 return $retval;
135}
136sub refresh {
138 my $fh;
139 open $fh, 'git update-index --refresh |'
140 or die;
141 while (<$fh>) {
142 ;# ignore 'needs update'
143 }
144 close $fh;
145}
146sub list_untracked {
148 map {
149 chomp $_;
150 unquote_path($_);
151 }
152 run_cmd_pipe(qw(git ls-files --others --exclude-standard --), @ARGV);
153}
154my $status_fmt = '%12s %12s %s';
156my $status_head = sprintf($status_fmt, 'staged', 'unstaged', 'path');
157{
159 my $initial;
160 sub is_initial_commit {
161 $initial = system('git rev-parse HEAD -- >/dev/null 2>&1') != 0
162 unless defined $initial;
163 return $initial;
164 }
165}
166sub get_empty_tree {
168 return '4b825dc642cb6eb9a060e54bf8d69288fbee4904';
169}
170# Returns list of hashes, contents of each of which are:
172# VALUE: pathname
173# BINARY: is a binary path
174# INDEX: is index different from HEAD?
175# FILE: is file different from index?
176# INDEX_ADDDEL: is it add/delete between HEAD and index?
177# FILE_ADDDEL: is it add/delete between index and file?
178sub list_modified {
180 my ($only) = @_;
181 my (%data, @return);
182 my ($add, $del, $adddel, $file);
183 my @tracked = ();
184 if (@ARGV) {
186 @tracked = map {
187 chomp $_;
188 unquote_path($_);
189 } run_cmd_pipe(qw(git ls-files --exclude-standard --), @ARGV);
190 return if (!@tracked);
191 }
192 my $reference = is_initial_commit() ? get_empty_tree() : 'HEAD';
194 for (run_cmd_pipe(qw(git diff-index --cached
195 --numstat --summary), $reference,
196 '--', @tracked)) {
197 if (($add, $del, $file) =
198 /^([-\d]+) ([-\d]+) (.*)/) {
199 my ($change, $bin);
200 $file = unquote_path($file);
201 if ($add eq '-' && $del eq '-') {
202 $change = 'binary';
203 $bin = 1;
204 }
205 else {
206 $change = "+$add/-$del";
207 }
208 $data{$file} = {
209 INDEX => $change,
210 BINARY => $bin,
211 FILE => 'nothing',
212 }
213 }
214 elsif (($adddel, $file) =
215 /^ (create|delete) mode [0-7]+ (.*)$/) {
216 $file = unquote_path($file);
217 $data{$file}{INDEX_ADDDEL} = $adddel;
218 }
219 }
220 for (run_cmd_pipe(qw(git diff-files --numstat --summary --), @tracked)) {
222 if (($add, $del, $file) =
223 /^([-\d]+) ([-\d]+) (.*)/) {
224 $file = unquote_path($file);
225 if (!exists $data{$file}) {
226 $data{$file} = +{
227 INDEX => 'unchanged',
228 BINARY => 0,
229 };
230 }
231 my ($change, $bin);
232 if ($add eq '-' && $del eq '-') {
233 $change = 'binary';
234 $bin = 1;
235 }
236 else {
237 $change = "+$add/-$del";
238 }
239 $data{$file}{FILE} = $change;
240 if ($bin) {
241 $data{$file}{BINARY} = 1;
242 }
243 }
244 elsif (($adddel, $file) =
245 /^ (create|delete) mode [0-7]+ (.*)$/) {
246 $file = unquote_path($file);
247 $data{$file}{FILE_ADDDEL} = $adddel;
248 }
249 }
250 for (sort keys %data) {
252 my $it = $data{$_};
253 if ($only) {
255 if ($only eq 'index-only') {
256 next if ($it->{INDEX} eq 'unchanged');
257 }
258 if ($only eq 'file-only') {
259 next if ($it->{FILE} eq 'nothing');
260 }
261 }
262 push @return, +{
263 VALUE => $_,
264 %$it,
265 };
266 }
267 return @return;
268}
269sub find_unique {
271 my ($string, @stuff) = @_;
272 my $found = undef;
273 for (my $i = 0; $i < @stuff; $i++) {
274 my $it = $stuff[$i];
275 my $hit = undef;
276 if (ref $it) {
277 if ((ref $it) eq 'ARRAY') {
278 $it = $it->[0];
279 }
280 else {
281 $it = $it->{VALUE};
282 }
283 }
284 eval {
285 if ($it =~ /^$string/) {
286 $hit = 1;
287 };
288 };
289 if (defined $hit && defined $found) {
290 return undef;
291 }
292 if ($hit) {
293 $found = $i + 1;
294 }
295 }
296 return $found;
297}
298# inserts string into trie and updates count for each character
300sub update_trie {
301 my ($trie, $string) = @_;
302 foreach (split //, $string) {
303 $trie = $trie->{$_} ||= {COUNT => 0};
304 $trie->{COUNT}++;
305 }
306}
307# returns an array of tuples (prefix, remainder)
309sub find_unique_prefixes {
310 my @stuff = @_;
311 my @return = ();
312 # any single prefix exceeding the soft limit is omitted
314 # if any prefix exceeds the hard limit all are omitted
315 # 0 indicates no limit
316 my $soft_limit = 0;
317 my $hard_limit = 3;
318 # build a trie modelling all possible options
320 my %trie;
321 foreach my $print (@stuff) {
322 if ((ref $print) eq 'ARRAY') {
323 $print = $print->[0];
324 }
325 elsif ((ref $print) eq 'HASH') {
326 $print = $print->{VALUE};
327 }
328 update_trie(\%trie, $print);
329 push @return, $print;
330 }
331 # use the trie to find the unique prefixes
333 for (my $i = 0; $i < @return; $i++) {
334 my $ret = $return[$i];
335 my @letters = split //, $ret;
336 my %search = %trie;
337 my ($prefix, $remainder);
338 my $j;
339 for ($j = 0; $j < @letters; $j++) {
340 my $letter = $letters[$j];
341 if ($search{$letter}{COUNT} == 1) {
342 $prefix = substr $ret, 0, $j + 1;
343 $remainder = substr $ret, $j + 1;
344 last;
345 }
346 else {
347 my $prefix = substr $ret, 0, $j;
348 return ()
349 if ($hard_limit && $j + 1 > $hard_limit);
350 }
351 %search = %{$search{$letter}};
352 }
353 if (ord($letters[0]) > 127 ||
354 ($soft_limit && $j + 1 > $soft_limit)) {
355 $prefix = undef;
356 $remainder = $ret;
357 }
358 $return[$i] = [$prefix, $remainder];
359 }
360 return @return;
361}
362# filters out prefixes which have special meaning to list_and_choose()
364sub is_valid_prefix {
365 my $prefix = shift;
366 return (defined $prefix) &&
367 !($prefix =~ /[\s,]/) && # separators
368 !($prefix =~ /^-/) && # deselection
369 !($prefix =~ /^\d+/) && # selection
370 ($prefix ne '*') && # "all" wildcard
371 ($prefix ne '?'); # prompt help
372}
373# given a prefix/remainder tuple return a string with the prefix highlighted
375# for now use square brackets; later might use ANSI colors (underline, bold)
376sub highlight_prefix {
377 my $prefix = shift;
378 my $remainder = shift;
379 if (!defined $prefix) {
381 return $remainder;
382 }
383 if (!is_valid_prefix($prefix)) {
385 return "$prefix$remainder";
386 }
387 if (!$menu_use_color) {
389 return "[$prefix]$remainder";
390 }
391 return "$prompt_color$prefix$normal_color$remainder";
393}
394sub error_msg {
396 print STDERR colored $error_color, @_;
397}
398sub list_and_choose {
400 my ($opts, @stuff) = @_;
401 my (@chosen, @return);
402 my $i;
403 my @prefixes = find_unique_prefixes(@stuff) unless $opts->{LIST_ONLY};
404 TOPLOOP:
406 while (1) {
407 my $last_lf = 0;
408 if ($opts->{HEADER}) {
410 if (!$opts->{LIST_FLAT}) {
411 print " ";
412 }
413 print colored $header_color, "$opts->{HEADER}\n";
414 }
415 for ($i = 0; $i < @stuff; $i++) {
416 my $chosen = $chosen[$i] ? '*' : ' ';
417 my $print = $stuff[$i];
418 my $ref = ref $print;
419 my $highlighted = highlight_prefix(@{$prefixes[$i]})
420 if @prefixes;
421 if ($ref eq 'ARRAY') {
422 $print = $highlighted || $print->[0];
423 }
424 elsif ($ref eq 'HASH') {
425 my $value = $highlighted || $print->{VALUE};
426 $print = sprintf($status_fmt,
427 $print->{INDEX},
428 $print->{FILE},
429 $value);
430 }
431 else {
432 $print = $highlighted || $print;
433 }
434 printf("%s%2d: %s", $chosen, $i+1, $print);
435 if (($opts->{LIST_FLAT}) &&
436 (($i + 1) % ($opts->{LIST_FLAT}))) {
437 print "\t";
438 $last_lf = 0;
439 }
440 else {
441 print "\n";
442 $last_lf = 1;
443 }
444 }
445 if (!$last_lf) {
446 print "\n";
447 }
448 return if ($opts->{LIST_ONLY});
450 print colored $prompt_color, $opts->{PROMPT};
452 if ($opts->{SINGLETON}) {
453 print "> ";
454 }
455 else {
456 print ">> ";
457 }
458 my $line = <STDIN>;
459 if (!$line) {
460 print "\n";
461 $opts->{ON_EOF}->() if $opts->{ON_EOF};
462 last;
463 }
464 chomp $line;
465 last if $line eq '';
466 if ($line eq '?') {
467 $opts->{SINGLETON} ?
468 singleton_prompt_help_cmd() :
469 prompt_help_cmd();
470 next TOPLOOP;
471 }
472 for my $choice (split(/[\s,]+/, $line)) {
473 my $choose = 1;
474 my ($bottom, $top);
475 # Input that begins with '-'; unchoose
477 if ($choice =~ s/^-//) {
478 $choose = 0;
479 }
480 # A range can be specified like 5-7 or 5-.
481 if ($choice =~ /^(\d+)-(\d*)$/) {
482 ($bottom, $top) = ($1, length($2) ? $2 : 1 + @stuff);
483 }
484 elsif ($choice =~ /^\d+$/) {
485 $bottom = $top = $choice;
486 }
487 elsif ($choice eq '*') {
488 $bottom = 1;
489 $top = 1 + @stuff;
490 }
491 else {
492 $bottom = $top = find_unique($choice, @stuff);
493 if (!defined $bottom) {
494 error_msg "Huh ($choice)?\n";
495 next TOPLOOP;
496 }
497 }
498 if ($opts->{SINGLETON} && $bottom != $top) {
499 error_msg "Huh ($choice)?\n";
500 next TOPLOOP;
501 }
502 for ($i = $bottom-1; $i <= $top-1; $i++) {
503 next if (@stuff <= $i || $i < 0);
504 $chosen[$i] = $choose;
505 }
506 }
507 last if ($opts->{IMMEDIATE} || $line eq '*');
508 }
509 for ($i = 0; $i < @stuff; $i++) {
510 if ($chosen[$i]) {
511 push @return, $stuff[$i];
512 }
513 }
514 return @return;
515}
516sub singleton_prompt_help_cmd {
518 print colored $help_color, <<\EOF ;
519Prompt help:
5201 - select a numbered item
521foo - select item based on unique prefix
522 - (empty) select nothing
523EOF
524}
525sub prompt_help_cmd {
527 print colored $help_color, <<\EOF ;
528Prompt help:
5291 - select a single item
5303-5 - select a range of items
5312-3,6-9 - select multiple ranges
532foo - select item based on unique prefix
533-... - unselect specified items
534* - choose all items
535 - (empty) finish selecting
536EOF
537}
538sub status_cmd {
540 list_and_choose({ LIST_ONLY => 1, HEADER => $status_head },
541 list_modified());
542 print "\n";
543}
544sub say_n_paths {
546 my $did = shift @_;
547 my $cnt = scalar @_;
548 print "$did ";
549 if (1 < $cnt) {
550 print "$cnt paths\n";
551 }
552 else {
553 print "one path\n";
554 }
555}
556sub update_cmd {
558 my @mods = list_modified('file-only');
559 return if (!@mods);
560 my @update = list_and_choose({ PROMPT => 'Update',
562 HEADER => $status_head, },
563 @mods);
564 if (@update) {
565 system(qw(git update-index --add --remove --),
566 map { $_->{VALUE} } @update);
567 say_n_paths('updated', @update);
568 }
569 print "\n";
570}
571sub revert_cmd {
573 my @update = list_and_choose({ PROMPT => 'Revert',
574 HEADER => $status_head, },
575 list_modified());
576 if (@update) {
577 if (is_initial_commit()) {
578 system(qw(git rm --cached),
579 map { $_->{VALUE} } @update);
580 }
581 else {
582 my @lines = run_cmd_pipe(qw(git ls-tree HEAD --),
583 map { $_->{VALUE} } @update);
584 my $fh;
585 open $fh, '| git update-index --index-info'
586 or die;
587 for (@lines) {
588 print $fh $_;
589 }
590 close($fh);
591 for (@update) {
592 if ($_->{INDEX_ADDDEL} &&
593 $_->{INDEX_ADDDEL} eq 'create') {
594 system(qw(git update-index --force-remove --),
595 $_->{VALUE});
596 print "note: $_->{VALUE} is untracked now.\n";
597 }
598 }
599 }
600 refresh();
601 say_n_paths('reverted', @update);
602 }
603 print "\n";
604}
605sub add_untracked_cmd {
607 my @add = list_and_choose({ PROMPT => 'Add untracked' },
608 list_untracked());
609 if (@add) {
610 system(qw(git update-index --add --), @add);
611 say_n_paths('added', @add);
612 }
613 print "\n";
614}
615sub parse_diff {
617 my ($path) = @_;
618 my @diff = run_cmd_pipe(qw(git diff-files -p --), $path);
619 my @colored = ();
620 if ($diff_use_color) {
621 @colored = run_cmd_pipe(qw(git diff-files -p --color --), $path);
622 }
623 my (@hunk) = { TEXT => [], DISPLAY => [] };
624 for (my $i = 0; $i < @diff; $i++) {
626 if ($diff[$i] =~ /^@@ /) {
627 push @hunk, { TEXT => [], DISPLAY => [] };
628 }
629 push @{$hunk[-1]{TEXT}}, $diff[$i];
630 push @{$hunk[-1]{DISPLAY}},
631 ($diff_use_color ? $colored[$i] : $diff[$i]);
632 }
633 return @hunk;
634}
635sub parse_diff_header {
637 my $src = shift;
638 my $head = { TEXT => [], DISPLAY => [] };
640 my $mode = { TEXT => [], DISPLAY => [] };
641 for (my $i = 0; $i < @{$src->{TEXT}}; $i++) {
643 my $dest = $src->{TEXT}->[$i] =~ /^(old|new) mode (\d+)$/ ?
644 $mode : $head;
645 push @{$dest->{TEXT}}, $src->{TEXT}->[$i];
646 push @{$dest->{DISPLAY}}, $src->{DISPLAY}->[$i];
647 }
648 return ($head, $mode);
649}
650sub hunk_splittable {
652 my ($text) = @_;
653 my @s = split_hunk($text);
655 return (1 < @s);
656}
657sub parse_hunk_header {
659 my ($line) = @_;
660 my ($o_ofs, $o_cnt, $n_ofs, $n_cnt) =
661 $line =~ /^@@ -(\d+)(?:,(\d+))? \+(\d+)(?:,(\d+))? @@/;
662 $o_cnt = 1 unless defined $o_cnt;
663 $n_cnt = 1 unless defined $n_cnt;
664 return ($o_ofs, $o_cnt, $n_ofs, $n_cnt);
665}
666sub split_hunk {
668 my ($text, $display) = @_;
669 my @split = ();
670 if (!defined $display) {
671 $display = $text;
672 }
673 # If there are context lines in the middle of a hunk,
674 # it can be split, but we would need to take care of
675 # overlaps later.
676 my ($o_ofs, undef, $n_ofs) = parse_hunk_header($text->[0]);
678 my $hunk_start = 1;
679 OUTER:
681 while (1) {
682 my $next_hunk_start = undef;
683 my $i = $hunk_start - 1;
684 my $this = +{
685 TEXT => [],
686 DISPLAY => [],
687 OLD => $o_ofs,
688 NEW => $n_ofs,
689 OCNT => 0,
690 NCNT => 0,
691 ADDDEL => 0,
692 POSTCTX => 0,
693 USE => undef,
694 };
695 while (++$i < @$text) {
697 my $line = $text->[$i];
698 my $display = $display->[$i];
699 if ($line =~ /^ /) {
700 if ($this->{ADDDEL} &&
701 !defined $next_hunk_start) {
702 # We have seen leading context and
703 # adds/dels and then here is another
704 # context, which is trailing for this
705 # split hunk and leading for the next
706 # one.
707 $next_hunk_start = $i;
708 }
709 push @{$this->{TEXT}}, $line;
710 push @{$this->{DISPLAY}}, $display;
711 $this->{OCNT}++;
712 $this->{NCNT}++;
713 if (defined $next_hunk_start) {
714 $this->{POSTCTX}++;
715 }
716 next;
717 }
718 # add/del
720 if (defined $next_hunk_start) {
721 # We are done with the current hunk and
722 # this is the first real change for the
723 # next split one.
724 $hunk_start = $next_hunk_start;
725 $o_ofs = $this->{OLD} + $this->{OCNT};
726 $n_ofs = $this->{NEW} + $this->{NCNT};
727 $o_ofs -= $this->{POSTCTX};
728 $n_ofs -= $this->{POSTCTX};
729 push @split, $this;
730 redo OUTER;
731 }
732 push @{$this->{TEXT}}, $line;
733 push @{$this->{DISPLAY}}, $display;
734 $this->{ADDDEL}++;
735 if ($line =~ /^-/) {
736 $this->{OCNT}++;
737 }
738 else {
739 $this->{NCNT}++;
740 }
741 }
742 push @split, $this;
744 last;
745 }
746 for my $hunk (@split) {
748 $o_ofs = $hunk->{OLD};
749 $n_ofs = $hunk->{NEW};
750 my $o_cnt = $hunk->{OCNT};
751 my $n_cnt = $hunk->{NCNT};
752 my $head = ("@@ -$o_ofs" .
754 (($o_cnt != 1) ? ",$o_cnt" : '') .
755 " +$n_ofs" .
756 (($n_cnt != 1) ? ",$n_cnt" : '') .
757 " @@\n");
758 my $display_head = $head;
759 unshift @{$hunk->{TEXT}}, $head;
760 if ($diff_use_color) {
761 $display_head = colored($fraginfo_color, $head);
762 }
763 unshift @{$hunk->{DISPLAY}}, $display_head;
764 }
765 return @split;
766}
767sub color_diff {
770 return map {
771 colored((/^@/ ? $fraginfo_color :
772 /^\+/ ? $diff_new_color :
773 /^-/ ? $diff_old_color :
774 $diff_plain_color),
775 $_);
776 } @_;
777}
778sub edit_hunk_manually {
780 my ($oldtext) = @_;
781 my $hunkfile = $repo->repo_path . "/addp-hunk-edit.diff";
783 my $fh;
784 open $fh, '>', $hunkfile
785 or die "failed to open hunk edit file for writing: " . $!;
786 print $fh "# Manual hunk edit mode -- see bottom for a quick guide\n";
787 print $fh @$oldtext;
788 print $fh <<EOF;
789# ---
790# To remove '-' lines, make them ' ' lines (context).
791# To remove '+' lines, delete them.
792# Lines starting with # will be removed.
793#
794# If the patch applies cleanly, the edited hunk will immediately be
795# marked for staging. If it does not apply cleanly, you will be given
796# an opportunity to edit again. If all lines of the hunk are removed,
797# then the edit is aborted and the hunk is left unchanged.
798EOF
799 close $fh;
800 my $editor = $ENV{GIT_EDITOR} || $repo->config("core.editor")
802 || $ENV{VISUAL} || $ENV{EDITOR} || "vi";
803 system('sh', '-c', $editor.' "$@"', $editor, $hunkfile);
804 if ($? != 0) {
806 return undef;
807 }
808 open $fh, '<', $hunkfile
810 or die "failed to open hunk edit file for reading: " . $!;
811 my @newtext = grep { !/^#/ } <$fh>;
812 close $fh;
813 unlink $hunkfile;
814 # Abort if nothing remains
816 if (!grep { /\S/ } @newtext) {
817 return undef;
818 }
819 # Reinsert the first hunk header if the user accidentally deleted it
821 if ($newtext[0] !~ /^@/) {
822 unshift @newtext, $oldtext->[0];
823 }
824 return \@newtext;
825}
826sub diff_applies {
828 my $fh;
829 open $fh, '| git apply --recount --cached --check';
830 for my $h (@_) {
831 print $fh @{$h->{TEXT}};
832 }
833 return close $fh;
834}
835sub _restore_terminal_and_die {
837 ReadMode 'restore';
838 print "\n";
839 exit 1;
840}
841sub prompt_single_character {
843 if ($use_readkey) {
844 local $SIG{TERM} = \&_restore_terminal_and_die;
845 local $SIG{INT} = \&_restore_terminal_and_die;
846 ReadMode 'cbreak';
847 my $key = ReadKey 0;
848 ReadMode 'restore';
849 print "$key" if defined $key;
850 print "\n";
851 return $key;
852 } else {
853 return <STDIN>;
854 }
855}
856sub prompt_yesno {
858 my ($prompt) = @_;
859 while (1) {
860 print colored $prompt_color, $prompt;
861 my $line = prompt_single_character;
862 return 0 if $line =~ /^n/i;
863 return 1 if $line =~ /^y/i;
864 }
865}
866sub edit_hunk_loop {
868 my ($head, $hunk, $ix) = @_;
869 my $text = $hunk->[$ix]->{TEXT};
870 while (1) {
872 $text = edit_hunk_manually($text);
873 if (!defined $text) {
874 return undef;
875 }
876 my $newhunk = { TEXT => $text, USE => 1 };
877 if (diff_applies($head,
878 @{$hunk}[0..$ix-1],
879 $newhunk,
880 @{$hunk}[$ix+1..$#{$hunk}])) {
881 $newhunk->{DISPLAY} = [color_diff(@{$text})];
882 return $newhunk;
883 }
884 else {
885 prompt_yesno(
886 'Your edited hunk does not apply. Edit again '
887 . '(saying "no" discards!) [y/n]? '
888 ) or return undef;
889 }
890 }
891}
892sub help_patch_cmd {
894 print colored $help_color, <<\EOF ;
895y - stage this hunk
896n - do not stage this hunk
897a - stage this and all the remaining hunks in the file
898d - do not stage this hunk nor any of the remaining hunks in the file
899g - select a hunk to go to
900/ - search for a hunk matching the given regex
901j - leave this hunk undecided, see next undecided hunk
902J - leave this hunk undecided, see next hunk
903k - leave this hunk undecided, see previous undecided hunk
904K - leave this hunk undecided, see previous hunk
905s - split the current hunk into smaller hunks
906e - manually edit the current hunk
907? - print help
908EOF
909}
910sub patch_update_cmd {
912 my @all_mods = list_modified('file-only');
913 my @mods = grep { !($_->{BINARY}) } @all_mods;
914 my @them;
915 if (!@mods) {
917 if (@all_mods) {
918 print STDERR "Only binary files changed.\n";
919 } else {
920 print STDERR "No changes.\n";
921 }
922 return 0;
923 }
924 if ($patch_mode) {
925 @them = @mods;
926 }
927 else {
928 @them = list_and_choose({ PROMPT => 'Patch update',
929 HEADER => $status_head, },
930 @mods);
931 }
932 for (@them) {
933 patch_update_file($_->{VALUE});
934 }
935}
936# Generate a one line summary of a hunk.
938sub summarize_hunk {
939 my $rhunk = shift;
940 my $summary = $rhunk->{TEXT}[0];
941 # Keep the line numbers, discard extra context.
943 $summary =~ s/@@(.*?)@@.*/$1 /s;
944 $summary .= " " x (20 - length $summary);
945 # Add some user context.
947 for my $line (@{$rhunk->{TEXT}}) {
948 if ($line =~ m/^[+-].*\w/) {
949 $summary .= $line;
950 last;
951 }
952 }
953 chomp $summary;
955 return substr($summary, 0, 80) . "\n";
956}
957# Print a one-line summary of each hunk in the array ref in
960# the first argument, starting wih the index in the 2nd.
961sub display_hunks {
962 my ($hunks, $i) = @_;
963 my $ctr = 0;
964 $i ||= 0;
965 for (; $i < @$hunks && $ctr < 20; $i++, $ctr++) {
966 my $status = " ";
967 if (defined $hunks->[$i]{USE}) {
968 $status = $hunks->[$i]{USE} ? "+" : "-";
969 }
970 printf "%s%2d: %s",
971 $status,
972 $i + 1,
973 summarize_hunk($hunks->[$i]);
974 }
975 return $i;
976}
977sub patch_update_file {
979 my ($ix, $num);
980 my $path = shift;
981 my ($head, @hunk) = parse_diff($path);
982 ($head, my $mode) = parse_diff_header($head);
983 for (@{$head->{DISPLAY}}) {
984 print;
985 }
986 if (@{$mode->{TEXT}}) {
988 while (1) {
989 print @{$mode->{DISPLAY}};
990 print colored $prompt_color,
991 "Stage mode change [y/n/a/d/?]? ";
992 my $line = prompt_single_character;
993 if ($line =~ /^y/i) {
994 $mode->{USE} = 1;
995 last;
996 }
997 elsif ($line =~ /^n/i) {
998 $mode->{USE} = 0;
999 last;
1000 }
1001 elsif ($line =~ /^a/i) {
1002 $_->{USE} = 1 foreach ($mode, @hunk);
1003 last;
1004 }
1005 elsif ($line =~ /^d/i) {
1006 $_->{USE} = 0 foreach ($mode, @hunk);
1007 last;
1008 }
1009 else {
1010 help_patch_cmd('');
1011 next;
1012 }
1013 }
1014 }
1015 $num = scalar @hunk;
1017 $ix = 0;
1018 while (1) {
1020 my ($prev, $next, $other, $undecided, $i);
1021 $other = '';
1022 if ($num <= $ix) {
1024 $ix = 0;
1025 }
1026 for ($i = 0; $i < $ix; $i++) {
1027 if (!defined $hunk[$i]{USE}) {
1028 $prev = 1;
1029 $other .= ',k';
1030 last;
1031 }
1032 }
1033 if ($ix) {
1034 $other .= ',K';
1035 }
1036 for ($i = $ix + 1; $i < $num; $i++) {
1037 if (!defined $hunk[$i]{USE}) {
1038 $next = 1;
1039 $other .= ',j';
1040 last;
1041 }
1042 }
1043 if ($ix < $num - 1) {
1044 $other .= ',J';
1045 }
1046 if ($num > 1) {
1047 $other .= ',g';
1048 }
1049 for ($i = 0; $i < $num; $i++) {
1050 if (!defined $hunk[$i]{USE}) {
1051 $undecided = 1;
1052 last;
1053 }
1054 }
1055 last if (!$undecided);
1056 if (hunk_splittable($hunk[$ix]{TEXT})) {
1058 $other .= ',s';
1059 }
1060 $other .= ',e';
1061 for (@{$hunk[$ix]{DISPLAY}}) {
1062 print;
1063 }
1064 print colored $prompt_color, "Stage this hunk [y,n,a,d,/$other,?]? ";
1065 my $line = prompt_single_character;
1066 if ($line) {
1067 if ($line =~ /^y/i) {
1068 $hunk[$ix]{USE} = 1;
1069 }
1070 elsif ($line =~ /^n/i) {
1071 $hunk[$ix]{USE} = 0;
1072 }
1073 elsif ($line =~ /^a/i) {
1074 while ($ix < $num) {
1075 if (!defined $hunk[$ix]{USE}) {
1076 $hunk[$ix]{USE} = 1;
1077 }
1078 $ix++;
1079 }
1080 next;
1081 }
1082 elsif ($other =~ /g/ && $line =~ /^g(.*)/) {
1083 my $response = $1;
1084 my $no = $ix > 10 ? $ix - 10 : 0;
1085 while ($response eq '') {
1086 my $extra = "";
1087 $no = display_hunks(\@hunk, $no);
1088 if ($no < $num) {
1089 $extra = " (<ret> to see more)";
1090 }
1091 print "go to which hunk$extra? ";
1092 $response = <STDIN>;
1093 if (!defined $response) {
1094 $response = '';
1095 }
1096 chomp $response;
1097 }
1098 if ($response !~ /^\s*\d+\s*$/) {
1099 error_msg "Invalid number: '$response'\n";
1100 } elsif (0 < $response && $response <= $num) {
1101 $ix = $response - 1;
1102 } else {
1103 error_msg "Sorry, only $num hunks available.\n";
1104 }
1105 next;
1106 }
1107 elsif ($line =~ /^d/i) {
1108 while ($ix < $num) {
1109 if (!defined $hunk[$ix]{USE}) {
1110 $hunk[$ix]{USE} = 0;
1111 }
1112 $ix++;
1113 }
1114 next;
1115 }
1116 elsif ($line =~ m|^/(.*)|) {
1117 my $regex = $1;
1118 if ($1 eq "") {
1119 print colored $prompt_color, "search for regex? ";
1120 $regex = <STDIN>;
1121 if (defined $regex) {
1122 chomp $regex;
1123 }
1124 }
1125 my $search_string;
1126 eval {
1127 $search_string = qr{$regex}m;
1128 };
1129 if ($@) {
1130 my ($err,$exp) = ($@, $1);
1131 $err =~ s/ at .*git-add--interactive line \d+, <STDIN> line \d+.*$//;
1132 error_msg "Malformed search regexp $exp: $err\n";
1133 next;
1134 }
1135 my $iy = $ix;
1136 while (1) {
1137 my $text = join ("", @{$hunk[$iy]{TEXT}});
1138 last if ($text =~ $search_string);
1139 $iy++;
1140 $iy = 0 if ($iy >= $num);
1141 if ($ix == $iy) {
1142 error_msg "No hunk matches the given pattern\n";
1143 last;
1144 }
1145 }
1146 $ix = $iy;
1147 next;
1148 }
1149 elsif ($line =~ /^K/) {
1150 if ($other =~ /K/) {
1151 $ix--;
1152 }
1153 else {
1154 error_msg "No previous hunk\n";
1155 }
1156 next;
1157 }
1158 elsif ($line =~ /^J/) {
1159 if ($other =~ /J/) {
1160 $ix++;
1161 }
1162 else {
1163 error_msg "No next hunk\n";
1164 }
1165 next;
1166 }
1167 elsif ($line =~ /^k/) {
1168 if ($other =~ /k/) {
1169 while (1) {
1170 $ix--;
1171 last if (!$ix ||
1172 !defined $hunk[$ix]{USE});
1173 }
1174 }
1175 else {
1176 error_msg "No previous hunk\n";
1177 }
1178 next;
1179 }
1180 elsif ($line =~ /^j/) {
1181 if ($other !~ /j/) {
1182 error_msg "No next hunk\n";
1183 next;
1184 }
1185 }
1186 elsif ($other =~ /s/ && $line =~ /^s/) {
1187 my @split = split_hunk($hunk[$ix]{TEXT}, $hunk[$ix]{DISPLAY});
1188 if (1 < @split) {
1189 print colored $header_color, "Split into ",
1190 scalar(@split), " hunks.\n";
1191 }
1192 splice (@hunk, $ix, 1, @split);
1193 $num = scalar @hunk;
1194 next;
1195 }
1196 elsif ($line =~ /^e/) {
1197 my $newhunk = edit_hunk_loop($head, \@hunk, $ix);
1198 if (defined $newhunk) {
1199 splice @hunk, $ix, 1, $newhunk;
1200 }
1201 }
1202 else {
1203 help_patch_cmd($other);
1204 next;
1205 }
1206 # soft increment
1207 while (1) {
1208 $ix++;
1209 last if ($ix >= $num ||
1210 !defined $hunk[$ix]{USE});
1211 }
1212 }
1213 }
1214 my $n_lofs = 0;
1216 my @result = ();
1217 if ($mode->{USE}) {
1218 push @result, @{$mode->{TEXT}};
1219 }
1220 for (@hunk) {
1221 if ($_->{USE}) {
1222 push @result, @{$_->{TEXT}};
1223 }
1224 }
1225 if (@result) {
1227 my $fh;
1228 open $fh, '| git apply --cached --recount';
1230 for (@{$head->{TEXT}}, @result) {
1231 print $fh $_;
1232 }
1233 if (!close $fh) {
1234 for (@{$head->{TEXT}}, @result) {
1235 print STDERR $_;
1236 }
1237 }
1238 refresh();
1239 }
1240 print "\n";
1242}
1243sub diff_cmd {
1245 my @mods = list_modified('index-only');
1246 @mods = grep { !($_->{BINARY}) } @mods;
1247 return if (!@mods);
1248 my (@them) = list_and_choose({ PROMPT => 'Review diff',
1249 IMMEDIATE => 1,
1250 HEADER => $status_head, },
1251 @mods);
1252 return if (!@them);
1253 my $reference = is_initial_commit() ? get_empty_tree() : 'HEAD';
1254 system(qw(git diff -p --cached), $reference, '--',
1255 map { $_->{VALUE} } @them);
1256}
1257sub quit_cmd {
1259 print "Bye.\n";
1260 exit(0);
1261}
1262sub help_cmd {
1264 print colored $help_color, <<\EOF ;
1265status - show paths with changes
1266update - add working tree state to the staged set of changes
1267revert - revert staged set of changes back to the HEAD version
1268patch - pick hunks and update selectively
1269diff - view diff between HEAD and index
1270add untracked - add contents of untracked files to the staged set of changes
1271EOF
1272}
1273sub process_args {
1275 return unless @ARGV;
1276 my $arg = shift @ARGV;
1277 if ($arg eq "--patch") {
1278 $patch_mode = 1;
1279 $arg = shift @ARGV or die "missing --";
1280 die "invalid argument $arg, expecting --"
1281 unless $arg eq "--";
1282 }
1283 elsif ($arg ne "--") {
1284 die "invalid argument $arg, expecting --";
1285 }
1286}
1287sub main_loop {
1289 my @cmd = ([ 'status', \&status_cmd, ],
1290 [ 'update', \&update_cmd, ],
1291 [ 'revert', \&revert_cmd, ],
1292 [ 'add untracked', \&add_untracked_cmd, ],
1293 [ 'patch', \&patch_update_cmd, ],
1294 [ 'diff', \&diff_cmd, ],
1295 [ 'quit', \&quit_cmd, ],
1296 [ 'help', \&help_cmd, ],
1297 );
1298 while (1) {
1299 my ($it) = list_and_choose({ PROMPT => 'What now',
1300 SINGLETON => 1,
1301 LIST_FLAT => 4,
1302 HEADER => '*** Commands ***',
1303 ON_EOF => \&quit_cmd,
1304 IMMEDIATE => 1 }, @cmd);
1305 if ($it) {
1306 eval {
1307 $it->[1]->();
1308 };
1309 if ($@) {
1310 print "$@";
1311 }
1312 }
1313 }
1314}
1315process_args();
1317refresh();
1318if ($patch_mode) {
1319 patch_update_cmd();
1320}
1321else {
1322 status_cmd();
1323 main_loop();
1324}