builtin-add: refactor the meat of interactive_add()
[git/git.git] / git-add--interactive.perl
CommitLineData
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1#!/usr/bin/perl -w
2
3use strict;
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4use Git;
5
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6binmode(STDOUT, ":raw");
7
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8my $repo = Git->repository();
9
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10my $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 ) : ();
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17my $error_color = ();
18if ($menu_use_color) {
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19 my $help_color_spec = ($repo->config('color.interactive.help') or
20 'red bold');
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21 $error_color = $repo->get_color('color.interactive.error',
22 $help_color_spec);
23}
b4c61ed6 24
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25my $diff_use_color = $repo->get_colorbool('color.diff');
26my ($fraginfo_color) =
27 $diff_use_color ? (
28 $repo->get_color('color.diff.frag', 'cyan'),
29 ) : ();
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30my ($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 ) : ();
b4c61ed6 42
f87e310d 43my $normal_color = $repo->get_color("", "reset");
b4c61ed6 44
ca6ac7f1 45my $use_readkey = 0;
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46sub ReadMode;
47sub ReadKey;
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48if ($repo->config_bool("interactive.singlekey")) {
49 eval {
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50 require Term::ReadKey;
51 Term::ReadKey->import;
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52 $use_readkey = 1;
53 };
54}
55
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56sub colored {
57 my $color = shift;
58 my $string = join("", @_);
59
f87e310d 60 if (defined $color) {
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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}
5cde71d6 72
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73# command line options
74my $patch_mode;
75
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76sub apply_patch;
77
78my %patch_modes = (
79 'stage' => {
80 DIFF => 'diff-files -p',
81 APPLY => sub { apply_patch 'apply --cached', @_; },
82 APPLY_CHECK => 'apply --cached',
83 VERB => 'Stage',
84 TARGET => '',
85 PARTICIPLE => 'staging',
86 FILTER => 'file-only',
87 },
88);
89
90my %patch_mode_flavour = %{$patch_modes{stage}};
91
5cde71d6 92sub run_cmd_pipe {
fdfd2008 93 if ($^O eq 'MSWin32' || $^O eq 'msys') {
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94 my @invalid = grep {m/[":*]/} @_;
95 die "$^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 <$fh>;
102 }
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103}
104
105my ($GIT_DIR) = run_cmd_pipe(qw(git rev-parse --git-dir));
106
107if (!defined $GIT_DIR) {
108 exit(1); # rev-parse would have already said "not a git repo"
109}
110chomp($GIT_DIR);
111
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112my %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
123sub 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
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153sub refresh {
154 my $fh;
21e9757e 155 open $fh, 'git update-index --refresh |'
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156 or die;
157 while (<$fh>) {
158 ;# ignore 'needs update'
159 }
160 close $fh;
161}
162
163sub list_untracked {
164 map {
165 chomp $_;
8851f480 166 unquote_path($_);
5cde71d6 167 }
4c841684 168 run_cmd_pipe(qw(git ls-files --others --exclude-standard --), @ARGV);
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169}
170
171my $status_fmt = '%12s %12s %s';
172my $status_head = sprintf($status_fmt, 'staged', 'unstaged', 'path');
173
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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 $initial;
180 }
181}
182
183sub get_empty_tree {
184 return '4b825dc642cb6eb9a060e54bf8d69288fbee4904';
185}
186
5cde71d6 187# Returns list of hashes, contents of each of which are:
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188# VALUE: pathname
189# BINARY: is a binary path
190# INDEX: is index different from HEAD?
191# FILE: is file different from index?
192# INDEX_ADDDEL: is it add/delete between HEAD and index?
193# FILE_ADDDEL: is it add/delete between index and file?
194
195sub list_modified {
196 my ($only) = @_;
197 my (%data, @return);
198 my ($add, $del, $adddel, $file);
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199 my @tracked = ();
200
201 if (@ARGV) {
202 @tracked = map {
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203 chomp $_;
204 unquote_path($_);
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205 } run_cmd_pipe(qw(git ls-files --exclude-standard --), @ARGV);
206 return if (!@tracked);
207 }
5cde71d6 208
18bc7616 209 my $reference = is_initial_commit() ? get_empty_tree() : 'HEAD';
5cde71d6 210 for (run_cmd_pipe(qw(git diff-index --cached
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211 --numstat --summary), $reference,
212 '--', @tracked)) {
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213 if (($add, $del, $file) =
214 /^([-\d]+) ([-\d]+) (.*)/) {
215 my ($change, $bin);
8851f480 216 $file = unquote_path($file);
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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, $file) =
231 /^ (create|delete) mode [0-7]+ (.*)$/) {
8851f480 232 $file = unquote_path($file);
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233 $data{$file}{INDEX_ADDDEL} = $adddel;
234 }
235 }
236
4c841684 237 for (run_cmd_pipe(qw(git diff-files --numstat --summary --), @tracked)) {
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238 if (($add, $del, $file) =
239 /^([-\d]+) ([-\d]+) (.*)/) {
8851f480 240 $file = unquote_path($file);
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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, $file) =
261 /^ (create|delete) mode [0-7]+ (.*)$/) {
8851f480 262 $file = unquote_path($file);
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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 => $_,
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280 %$it,
281 };
282 }
283 return @return;
284}
285
286sub 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 $found;
313}
314
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315# inserts string into trie and updates count for each character
316sub update_trie {
317 my ($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)
325sub 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 }
63320989 341 elsif ((ref $print) eq 'HASH') {
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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{$letter}};
368 }
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369 if (ord($letters[0]) > 127 ||
370 ($soft_limit && $j + 1 > $soft_limit)) {
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371 $prefix = undef;
372 $remainder = $ret;
373 }
374 $return[$i] = [$prefix, $remainder];
375 }
376 return @return;
377}
378
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379# filters out prefixes which have special meaning to list_and_choose()
380sub is_valid_prefix {
381 my $prefix = shift;
382 return (defined $prefix) &&
383 !($prefix =~ /[\s,]/) && # separators
384 !($prefix =~ /^-/) && # deselection
385 !($prefix =~ /^\d+/) && # selection
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386 ($prefix ne '*') && # "all" wildcard
387 ($prefix ne '?'); # prompt help
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388}
389
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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)
392sub highlight_prefix {
393 my $prefix = shift;
394 my $remainder = shift;
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395
396 if (!defined $prefix) {
397 return $remainder;
398 }
399
400 if (!is_valid_prefix($prefix)) {
401 return "$prefix$remainder";
402 }
403
f87e310d 404 if (!$menu_use_color) {
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405 return "[$prefix]$remainder";
406 }
407
408 return "$prompt_color$prefix$normal_color$remainder";
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409}
410
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411sub error_msg {
412 print STDERR colored $error_color, @_;
413}
414
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415sub list_and_choose {
416 my ($opts, @stuff) = @_;
417 my (@chosen, @return);
418 my $i;
14cb5038 419 my @prefixes = find_unique_prefixes(@stuff) unless $opts->{LIST_ONLY};
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420
421 TOPLOOP:
422 while (1) {
423 my $last_lf = 0;
424
425 if ($opts->{HEADER}) {
426 if (!$opts->{LIST_FLAT}) {
427 print " ";
428 }
b4c61ed6 429 print colored $header_color, "$opts->{HEADER}\n";
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430 }
431 for ($i = 0; $i < @stuff; $i++) {
432 my $chosen = $chosen[$i] ? '*' : ' ';
433 my $print = $stuff[$i];
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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;
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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
b4c61ed6 467 print colored $prompt_color, $opts->{PROMPT};
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468 if ($opts->{SINGLETON}) {
469 print "> ";
470 }
471 else {
472 print ">> ";
473 }
474 my $line = <STDIN>;
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475 if (!$line) {
476 print "\n";
477 $opts->{ON_EOF}->() if $opts->{ON_EOF};
478 last;
479 }
5cde71d6 480 chomp $line;
6a6eb3d0 481 last if $line eq '';
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WC
482 if ($line eq '?') {
483 $opts->{SINGLETON} ?
484 singleton_prompt_help_cmd() :
485 prompt_help_cmd();
486 next TOPLOOP;
487 }
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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 $choose = 0;
495 }
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496 # A range can be specified like 5-7 or 5-.
497 if ($choice =~ /^(\d+)-(\d*)$/) {
498 ($bottom, $top) = ($1, length($2) ? $2 : 1 + @stuff);
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499 }
500 elsif ($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 $bottom) {
a3019736 510 error_msg "Huh ($choice)?\n";
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511 next TOPLOOP;
512 }
513 }
514 if ($opts->{SINGLETON} && $bottom != $top) {
a3019736 515 error_msg "Huh ($choice)?\n";
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516 next TOPLOOP;
517 }
518 for ($i = $bottom-1; $i <= $top-1; $i++) {
6a6eb3d0 519 next if (@stuff <= $i || $i < 0);
5cde71d6 520 $chosen[$i] = $choose;
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521 }
522 }
12db334e 523 last if ($opts->{IMMEDIATE} || $line eq '*');
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524 }
525 for ($i = 0; $i < @stuff; $i++) {
526 if ($chosen[$i]) {
527 push @return, $stuff[$i];
528 }
529 }
530 return @return;
531}
532
7e018be2 533sub singleton_prompt_help_cmd {
b4c61ed6 534 print colored $help_color, <<\EOF ;
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535Prompt help:
5361 - select a numbered item
537foo - select item based on unique prefix
538 - (empty) select nothing
539EOF
540}
541
542sub prompt_help_cmd {
b4c61ed6 543 print colored $help_color, <<\EOF ;
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544Prompt help:
5451 - select a single item
5463-5 - select a range of items
5472-3,6-9 - select multiple ranges
548foo - select item based on unique prefix
549-... - unselect specified items
550* - choose all items
551 - (empty) finish selecting
552EOF
553}
554
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555sub status_cmd {
556 list_and_choose({ LIST_ONLY => 1, HEADER => $status_head },
557 list_modified());
558 print "\n";
559}
560
561sub 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
573sub 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) {
a4f7112f 581 system(qw(git update-index --add --remove --),
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582 map { $_->{VALUE} } @update);
583 say_n_paths('updated', @update);
584 }
585 print "\n";
586}
587
588sub revert_cmd {
589 my @update = list_and_choose({ PROMPT => 'Revert',
590 HEADER => $status_head, },
591 list_modified());
592 if (@update) {
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593 if (is_initial_commit()) {
594 system(qw(git rm --cached),
595 map { $_->{VALUE} } @update);
5cde71d6 596 }
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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 }
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614 }
615 }
616 refresh();
617 say_n_paths('reverted', @update);
618 }
619 print "\n";
620}
621
622sub 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
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632sub run_git_apply {
633 my $cmd = shift;
634 my $fh;
635 open $fh, '| git ' . $cmd;
636 print $fh @_;
637 return close $fh;
638}
639
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640sub parse_diff {
641 my ($path) = @_;
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642 my @diff_cmd = split(" ", $patch_mode_flavour{DIFF});
643 my @diff = run_cmd_pipe("git", @diff_cmd, "--", $path);
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644 my @colored = ();
645 if ($diff_use_color) {
8f0bef6d 646 @colored = run_cmd_pipe("git", @diff_cmd, qw(--color --), $path);
5cde71d6 647 }
0392513f 648 my (@hunk) = { TEXT => [], DISPLAY => [], TYPE => 'header' };
b4c61ed6 649
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650 for (my $i = 0; $i < @diff; $i++) {
651 if ($diff[$i] =~ /^@@ /) {
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652 push @hunk, { TEXT => [], DISPLAY => [],
653 TYPE => 'hunk' };
b4c61ed6 654 }
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WC
655 push @{$hunk[-1]{TEXT}}, $diff[$i];
656 push @{$hunk[-1]{DISPLAY}},
657 ($diff_use_color ? $colored[$i] : $diff[$i]);
b4c61ed6 658 }
4af756f3 659 return @hunk;
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660}
661
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662sub parse_diff_header {
663 my $src = shift;
664
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665 my $head = { TEXT => [], DISPLAY => [], TYPE => 'header' };
666 my $mode = { TEXT => [], DISPLAY => [], TYPE => 'mode' };
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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, $mode);
675}
676
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677sub hunk_splittable {
678 my ($text) = @_;
679
680 my @s = split_hunk($text);
681 return (1 < @s);
682}
683
684sub parse_hunk_header {
685 my ($line) = @_;
686 my ($o_ofs, $o_cnt, $n_ofs, $n_cnt) =
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687 $line =~ /^@@ -(\d+)(?:,(\d+))? \+(\d+)(?:,(\d+))? @@/;
688 $o_cnt = 1 unless defined $o_cnt;
689 $n_cnt = 1 unless defined $n_cnt;
835b2aeb
JH
690 return ($o_ofs, $o_cnt, $n_ofs, $n_cnt);
691}
692
693sub split_hunk {
4af756f3 694 my ($text, $display) = @_;
835b2aeb 695 my @split = ();
4af756f3
WC
696 if (!defined $display) {
697 $display = $text;
698 }
835b2aeb
JH
699 # If there are context lines in the middle of a hunk,
700 # it can be split, but we would need to take care of
701 # overlaps later.
702
7b40a455 703 my ($o_ofs, undef, $n_ofs) = parse_hunk_header($text->[0]);
835b2aeb 704 my $hunk_start = 1;
835b2aeb
JH
705
706 OUTER:
707 while (1) {
708 my $next_hunk_start = undef;
709 my $i = $hunk_start - 1;
710 my $this = +{
711 TEXT => [],
4af756f3 712 DISPLAY => [],
0392513f 713 TYPE => 'hunk',
835b2aeb
JH
714 OLD => $o_ofs,
715 NEW => $n_ofs,
716 OCNT => 0,
717 NCNT => 0,
718 ADDDEL => 0,
719 POSTCTX => 0,
4af756f3 720 USE => undef,
835b2aeb
JH
721 };
722
723 while (++$i < @$text) {
724 my $line = $text->[$i];
4af756f3 725 my $display = $display->[$i];
835b2aeb
JH
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}}, $line;
4af756f3 737 push @{$this->{DISPLAY}}, $display;
835b2aeb
JH
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}}, $line;
4af756f3 760 push @{$this->{DISPLAY}}, $display;
835b2aeb
JH
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};
7b40a455
JLH
777 my $o_cnt = $hunk->{OCNT};
778 my $n_cnt = $hunk->{NCNT};
835b2aeb
JH
779
780 my $head = ("@@ -$o_ofs" .
781 (($o_cnt != 1) ? ",$o_cnt" : '') .
782 " +$n_ofs" .
783 (($n_cnt != 1) ? ",$n_cnt" : '') .
784 " @@\n");
4af756f3 785 my $display_head = $head;
835b2aeb 786 unshift @{$hunk->{TEXT}}, $head;
4af756f3
WC
787 if ($diff_use_color) {
788 $display_head = colored($fraginfo_color, $head);
789 }
790 unshift @{$hunk->{DISPLAY}}, $display_head;
835b2aeb 791 }
4af756f3 792 return @split;
835b2aeb
JH
793}
794
7a26e653
JH
795sub find_last_o_ctx {
796 my ($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 $last_o_ctx;
810}
811
812sub merge_hunk {
813 my ($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}} = ($head, @line);
860}
861
862sub coalesce_overlapping_hunks {
863 my (@in) = @_;
864 my @out = ();
865
866 my ($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}
835b2aeb 885
ac083c47
TR
886sub color_diff {
887 return map {
888 colored((/^@/ ? $fraginfo_color :
889 /^\+/ ? $diff_new_color :
890 /^-/ ? $diff_old_color :
891 $diff_plain_color),
892 $_);
893 } @_;
894}
895
896sub edit_hunk_manually {
897 my ($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;
8f0bef6d 905 my $participle = $patch_mode_flavour{PARTICIPLE};
ac083c47
TR
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
8f0bef6d 913# marked for $participle. If it does not apply cleanly, you will be given
ac083c47
TR
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.
916EOF
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, $hunkfile);
922
1d398a03
DM
923 if ($? != 0) {
924 return undef;
925 }
926
ac083c47
TR
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
945sub diff_applies {
946 my $fh;
8f0bef6d
TR
947 return run_git_apply($patch_mode_flavour{APPLY_CHECK} . ' --recount --check',
948 map { @{$_->{TEXT}} } @_);
ac083c47
TR
949}
950
ca6ac7f1
TR
951sub _restore_terminal_and_die {
952 ReadMode 'restore';
953 print "\n";
954 exit 1;
955}
956
957sub prompt_single_character {
958 if ($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 $key;
967 } else {
968 return <STDIN>;
969 }
970}
971
ac083c47
TR
972sub prompt_yesno {
973 my ($prompt) = @_;
974 while (1) {
975 print colored $prompt_color, $prompt;
ca6ac7f1 976 my $line = prompt_single_character;
ac083c47
TR
977 return 0 if $line =~ /^n/i;
978 return 1 if $line =~ /^y/i;
979 }
980}
981
982sub edit_hunk_loop {
983 my ($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 }
0392513f
JK
991 my $newhunk = {
992 TEXT => $text,
993 TYPE => $hunk->[$ix]->{TYPE},
7a26e653
JH
994 USE => 1,
995 DIRTY => 1,
0392513f 996 };
ac083c47
TR
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
5cde71d6 1013sub help_patch_cmd {
8f0bef6d
TR
1014 my $verb = lc $patch_mode_flavour{VERB};
1015 my $target = $patch_mode_flavour{TARGET};
1016 print colored $help_color, <<EOF ;
1017y - $verb this hunk$target
1018n - do not $verb this hunk$target
1019q - quit, do not $verb this hunk nor any of the remaining ones
1020a - $verb this and all the remaining hunks in the file
1021d - do not $verb this hunk nor any of the remaining hunks in the file
070434d0 1022g - select a hunk to go to
dd971cc9 1023/ - search for a hunk matching the given regex
5cde71d6
JH
1024j - leave this hunk undecided, see next undecided hunk
1025J - leave this hunk undecided, see next hunk
1026k - leave this hunk undecided, see previous undecided hunk
1027K - leave this hunk undecided, see previous hunk
835b2aeb 1028s - split the current hunk into smaller hunks
ac083c47 1029e - manually edit the current hunk
280e50c7 1030? - print help
5cde71d6
JH
1031EOF
1032}
1033
8f0bef6d
TR
1034sub apply_patch {
1035 my $cmd = shift;
1036 my $ret = run_git_apply $cmd . ' --recount', @_;
1037 if (!$ret) {
1038 print STDERR @_;
1039 }
1040 return $ret;
1041}
1042
5cde71d6 1043sub patch_update_cmd {
8f0bef6d 1044 my @all_mods = list_modified($patch_mode_flavour{FILTER});
9fe7a643 1045 my @mods = grep { !($_->{BINARY}) } @all_mods;
b63e9950 1046 my @them;
5cde71d6 1047
b63e9950 1048 if (!@mods) {
9fe7a643
TR
1049 if (@all_mods) {
1050 print STDERR "Only binary files changed.\n";
1051 } else {
1052 print STDERR "No changes.\n";
1053 }
b63e9950
WC
1054 return 0;
1055 }
1056 if ($patch_mode) {
1057 @them = @mods;
1058 }
1059 else {
1060 @them = list_and_choose({ PROMPT => 'Patch update',
1061 HEADER => $status_head, },
1062 @mods);
1063 }
12db334e 1064 for (@them) {
9a7a1e03 1065 return 0 if patch_update_file($_->{VALUE});
12db334e 1066 }
a7d9da6c 1067}
5cde71d6 1068
3f6aff68
WP
1069# Generate a one line summary of a hunk.
1070sub 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.
1093sub 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
a7d9da6c 1110sub patch_update_file {
9a7a1e03 1111 my $quit = 0;
5cde71d6 1112 my ($ix, $num);
a7d9da6c 1113 my $path = shift;
5cde71d6 1114 my ($head, @hunk) = parse_diff($path);
b717a627 1115 ($head, my $mode) = parse_diff_header($head);
4af756f3
WC
1116 for (@{$head->{DISPLAY}}) {
1117 print;
1118 }
ca724686
JK
1119
1120 if (@{$mode->{TEXT}}) {
0392513f 1121 unshift @hunk, $mode;
ca724686
JK
1122 }
1123
5cde71d6
JH
1124 $num = scalar @hunk;
1125 $ix = 0;
1126
1127 while (1) {
835b2aeb 1128 my ($prev, $next, $other, $undecided, $i);
5cde71d6
JH
1129 $other = '';
1130
1131 if ($num <= $ix) {
1132 $ix = 0;
1133 }
835b2aeb 1134 for ($i = 0; $i < $ix; $i++) {
5cde71d6
JH
1135 if (!defined $hunk[$i]{USE}) {
1136 $prev = 1;
57886bc7 1137 $other .= ',k';
5cde71d6
JH
1138 last;
1139 }
1140 }
1141 if ($ix) {
57886bc7 1142 $other .= ',K';
5cde71d6 1143 }
835b2aeb 1144 for ($i = $ix + 1; $i < $num; $i++) {
5cde71d6
JH
1145 if (!defined $hunk[$i]{USE}) {
1146 $next = 1;
57886bc7 1147 $other .= ',j';
5cde71d6
JH
1148 last;
1149 }
1150 }
1151 if ($ix < $num - 1) {
57886bc7 1152 $other .= ',J';
5cde71d6 1153 }
070434d0 1154 if ($num > 1) {
4404b2e3 1155 $other .= ',g';
070434d0 1156 }
835b2aeb 1157 for ($i = 0; $i < $num; $i++) {
5cde71d6
JH
1158 if (!defined $hunk[$i]{USE}) {
1159 $undecided = 1;
1160 last;
1161 }
1162 }
1163 last if (!$undecided);
1164
0392513f
JK
1165 if ($hunk[$ix]{TYPE} eq 'hunk' &&
1166 hunk_splittable($hunk[$ix]{TEXT})) {
57886bc7 1167 $other .= ',s';
835b2aeb 1168 }
0392513f
JK
1169 if ($hunk[$ix]{TYPE} eq 'hunk') {
1170 $other .= ',e';
1171 }
4af756f3
WC
1172 for (@{$hunk[$ix]{DISPLAY}}) {
1173 print;
1174 }
8f0bef6d
TR
1175 print colored $prompt_color, $patch_mode_flavour{VERB},
1176 ($hunk[$ix]{TYPE} eq 'mode' ? ' mode change' : ' this hunk'),
1177 $patch_mode_flavour{TARGET},
a2fc8d65 1178 " [y,n,q,a,d,/$other,?]? ";
ca6ac7f1 1179 my $line = prompt_single_character;
5cde71d6
JH
1180 if ($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 $ix++;
1193 }
1194 next;
1195 }
070434d0
WP
1196 elsif ($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>;
68c02d7c
TR
1207 if (!defined $response) {
1208 $response = '';
1209 }
070434d0
WP
1210 chomp $response;
1211 }
1212 if ($response !~ /^\s*\d+\s*$/) {
a3019736 1213 error_msg "Invalid number: '$response'\n";
070434d0
WP
1214 } elsif (0 < $response && $response <= $num) {
1215 $ix = $response - 1;
1216 } else {
a3019736 1217 error_msg "Sorry, only $num hunks available.\n";
070434d0
WP
1218 }
1219 next;
1220 }
5cde71d6
JH
1221 elsif ($line =~ /^d/i) {
1222 while ($ix < $num) {
1223 if (!defined $hunk[$ix]{USE}) {
1224 $hunk[$ix]{USE} = 0;
1225 }
1226 $ix++;
1227 }
1228 next;
1229 }
9a7a1e03
MM
1230 elsif ($line =~ /^q/i) {
1231 while ($ix < $num) {
1232 if (!defined $hunk[$ix]{USE}) {
1233 $hunk[$ix]{USE} = 0;
1234 }
1235 $ix++;
1236 }
1237 $quit = 1;
1238 next;
1239 }
dd971cc9 1240 elsif ($line =~ m|^/(.*)|) {
ca6ac7f1
TR
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 }
dd971cc9
WP
1249 my $search_string;
1250 eval {
ca6ac7f1 1251 $search_string = qr{$regex}m;
dd971cc9
WP
1252 };
1253 if ($@) {
1254 my ($err,$exp) = ($@, $1);
1255 $err =~ s/ at .*git-add--interactive line \d+, <STDIN> line \d+.*$//;
a3019736 1256 error_msg "Malformed search regexp $exp: $err\n";
dd971cc9
WP
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) {
a3019736 1266 error_msg "No hunk matches the given pattern\n";
dd971cc9
WP
1267 last;
1268 }
1269 }
1270 $ix = $iy;
1271 next;
1272 }
ace30ba8
WP
1273 elsif ($line =~ /^K/) {
1274 if ($other =~ /K/) {
1275 $ix--;
1276 }
1277 else {
a3019736 1278 error_msg "No previous hunk\n";
ace30ba8 1279 }
5cde71d6
JH
1280 next;
1281 }
ace30ba8
WP
1282 elsif ($line =~ /^J/) {
1283 if ($other =~ /J/) {
1284 $ix++;
1285 }
1286 else {
a3019736 1287 error_msg "No next hunk\n";
ace30ba8 1288 }
5cde71d6
JH
1289 next;
1290 }
ace30ba8
WP
1291 elsif ($line =~ /^k/) {
1292 if ($other =~ /k/) {
1293 while (1) {
1294 $ix--;
1295 last if (!$ix ||
1296 !defined $hunk[$ix]{USE});
1297 }
1298 }
1299 else {
a3019736 1300 error_msg "No previous hunk\n";
5cde71d6
JH
1301 }
1302 next;
1303 }
ace30ba8
WP
1304 elsif ($line =~ /^j/) {
1305 if ($other !~ /j/) {
a3019736 1306 error_msg "No next hunk\n";
ace30ba8 1307 next;
5cde71d6 1308 }
5cde71d6 1309 }
835b2aeb 1310 elsif ($other =~ /s/ && $line =~ /^s/) {
4af756f3 1311 my @split = split_hunk($hunk[$ix]{TEXT}, $hunk[$ix]{DISPLAY});
835b2aeb 1312 if (1 < @split) {
b4c61ed6 1313 print colored $header_color, "Split into ",
835b2aeb
JH
1314 scalar(@split), " hunks.\n";
1315 }
4af756f3 1316 splice (@hunk, $ix, 1, @split);
835b2aeb
JH
1317 $num = scalar @hunk;
1318 next;
1319 }
0392513f 1320 elsif ($other =~ /e/ && $line =~ /^e/) {
ac083c47
TR
1321 my $newhunk = edit_hunk_loop($head, \@hunk, $ix);
1322 if (defined $newhunk) {
1323 splice @hunk, $ix, 1, $newhunk;
1324 }
1325 }
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1326 else {
1327 help_patch_cmd($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
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1339 @hunk = coalesce_overlapping_hunks(@hunk);
1340
7b40a455 1341 my $n_lofs = 0;
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1342 my @result = ();
1343 for (@hunk) {
8cbd4310
TR
1344 if ($_->{USE}) {
1345 push @result, @{$_->{TEXT}};
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1346 }
1347 }
1348
1349 if (@result) {
1350 my $fh;
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TR
1351 my @patch = (@{$head->{TEXT}}, @result);
1352 my $apply_routine = $patch_mode_flavour{APPLY};
1353 &$apply_routine(@patch);
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1354 refresh();
1355 }
1356
1357 print "\n";
9a7a1e03 1358 return $quit;
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1359}
1360
1361sub diff_cmd {
1362 my @mods = list_modified('index-only');
1363 @mods = grep { !($_->{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);
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1370 my $reference = is_initial_commit() ? get_empty_tree() : 'HEAD';
1371 system(qw(git diff -p --cached), $reference, '--',
1372 map { $_->{VALUE} } @them);
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1373}
1374
1375sub quit_cmd {
1376 print "Bye.\n";
1377 exit(0);
1378}
1379
1380sub help_cmd {
b4c61ed6 1381 print colored $help_color, <<\EOF ;
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1382status - show paths with changes
1383update - add working tree state to the staged set of changes
1384revert - revert staged set of changes back to the HEAD version
1385patch - pick hunks and update selectively
1386diff - view diff between HEAD and index
1387add untracked - add contents of untracked files to the staged set of changes
1388EOF
1389}
1390
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1391sub 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 $arg, expecting --";
1402 }
1403}
1404
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1405sub main_loop {
1406 my @cmd = ([ 'status', \&status_cmd, ],
1407 [ 'update', \&update_cmd, ],
1408 [ 'revert', \&revert_cmd, ],
1409 [ 'add untracked', \&add_untracked_cmd, ],
1410 [ 'patch', \&patch_update_cmd, ],
1411 [ 'diff', \&diff_cmd, ],
1412 [ 'quit', \&quit_cmd, ],
1413 [ 'help', \&help_cmd, ],
1414 );
1415 while (1) {
1416 my ($it) = list_and_choose({ PROMPT => 'What now',
1417 SINGLETON => 1,
1418 LIST_FLAT => 4,
1419 HEADER => '*** Commands ***',
c95c0248 1420 ON_EOF => \&quit_cmd,
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1421 IMMEDIATE => 1 }, @cmd);
1422 if ($it) {
1423 eval {
1424 $it->[1]->();
1425 };
1426 if ($@) {
1427 print "$@";
1428 }
1429 }
1430 }
1431}
1432
b63e9950 1433process_args();
5cde71d6 1434refresh();
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WC
1435if ($patch_mode) {
1436 patch_update_cmd();
1437}
1438else {
1439 status_cmd();
1440 main_loop();
1441}