diff options
Diffstat (limited to 'git-add--interactive.perl')
| -rwxr-xr-x | git-add--interactive.perl | 1627 |
1 files changed, 1627 insertions, 0 deletions
diff --git a/git-add--interactive.perl b/git-add--interactive.perl new file mode 100755 index 0000000000..8f0839d205 --- /dev/null +++ b/git-add--interactive.perl @@ -0,0 +1,1627 @@ +#!/usr/bin/perl + +use 5.008; +use strict; +use warnings; +use Git; + +binmode(STDOUT, ":raw"); + +my $repo = Git->repository(); + +my $menu_use_color = $repo->get_colorbool('color.interactive'); +my ($prompt_color, $header_color, $help_color) = + $menu_use_color ? ( + $repo->get_color('color.interactive.prompt', 'bold blue'), + $repo->get_color('color.interactive.header', 'bold'), + $repo->get_color('color.interactive.help', 'red bold'), + ) : (); +my $error_color = (); +if ($menu_use_color) { + my $help_color_spec = ($repo->config('color.interactive.help') or + 'red bold'); + $error_color = $repo->get_color('color.interactive.error', + $help_color_spec); +} + +my $diff_use_color = $repo->get_colorbool('color.diff'); +my ($fraginfo_color) = + $diff_use_color ? ( + $repo->get_color('color.diff.frag', 'cyan'), + ) : (); +my ($diff_plain_color) = + $diff_use_color ? ( + $repo->get_color('color.diff.plain', ''), + ) : (); +my ($diff_old_color) = + $diff_use_color ? ( + $repo->get_color('color.diff.old', 'red'), + ) : (); +my ($diff_new_color) = + $diff_use_color ? ( + $repo->get_color('color.diff.new', 'green'), + ) : (); + +my $normal_color = $repo->get_color("", "reset"); + +my $use_readkey = 0; +my $use_termcap = 0; +my %term_escapes; + +sub ReadMode; +sub ReadKey; +if ($repo->config_bool("interactive.singlekey")) { + eval { + require Term::ReadKey; + Term::ReadKey->import; + $use_readkey = 1; + }; + eval { + require Term::Cap; + my $termcap = Term::Cap->Tgetent; + foreach (values %$termcap) { + $term_escapes{$_} = 1 if /^\e/; + } + $use_termcap = 1; + }; +} + +sub colored { + my $color = shift; + my $string = join("", @_); + + if (defined $color) { + # Put a color code at the beginning of each line, a reset at the end + # color after newlines that are not at the end of the string + $string =~ s/(\n+)(.)/$1$color$2/g; + # reset before newlines + $string =~ s/(\n+)/$normal_color$1/g; + # codes at beginning and end (if necessary): + $string =~ s/^/$color/; + $string =~ s/$/$normal_color/ unless $string =~ /\n$/; + } + return $string; +} + +# command line options +my $patch_mode; +my $patch_mode_revision; + +sub apply_patch; +sub apply_patch_for_checkout_commit; +sub apply_patch_for_stash; + +my %patch_modes = ( + 'stage' => { + DIFF => 'diff-files -p', + APPLY => sub { apply_patch 'apply --cached', @_; }, + APPLY_CHECK => 'apply --cached', + VERB => 'Stage', + TARGET => '', + PARTICIPLE => 'staging', + FILTER => 'file-only', + IS_REVERSE => 0, + }, + 'stash' => { + DIFF => 'diff-index -p HEAD', + APPLY => sub { apply_patch 'apply --cached', @_; }, + APPLY_CHECK => 'apply --cached', + VERB => 'Stash', + TARGET => '', + PARTICIPLE => 'stashing', + FILTER => undef, + IS_REVERSE => 0, + }, + 'reset_head' => { + DIFF => 'diff-index -p --cached', + APPLY => sub { apply_patch 'apply -R --cached', @_; }, + APPLY_CHECK => 'apply -R --cached', + VERB => 'Unstage', + TARGET => '', + PARTICIPLE => 'unstaging', + FILTER => 'index-only', + IS_REVERSE => 1, + }, + 'reset_nothead' => { + DIFF => 'diff-index -R -p --cached', + APPLY => sub { apply_patch 'apply --cached', @_; }, + APPLY_CHECK => 'apply --cached', + VERB => 'Apply', + TARGET => ' to index', + PARTICIPLE => 'applying', + FILTER => 'index-only', + IS_REVERSE => 0, + }, + 'checkout_index' => { + DIFF => 'diff-files -p', + APPLY => sub { apply_patch 'apply -R', @_; }, + APPLY_CHECK => 'apply -R', + VERB => 'Discard', + TARGET => ' from worktree', + PARTICIPLE => 'discarding', + FILTER => 'file-only', + IS_REVERSE => 1, + }, + 'checkout_head' => { + DIFF => 'diff-index -p', + APPLY => sub { apply_patch_for_checkout_commit '-R', @_ }, + APPLY_CHECK => 'apply -R', + VERB => 'Discard', + TARGET => ' from index and worktree', + PARTICIPLE => 'discarding', + FILTER => undef, + IS_REVERSE => 1, + }, + 'checkout_nothead' => { + DIFF => 'diff-index -R -p', + APPLY => sub { apply_patch_for_checkout_commit '', @_ }, + APPLY_CHECK => 'apply', + VERB => 'Apply', + TARGET => ' to index and worktree', + PARTICIPLE => 'applying', + FILTER => undef, + IS_REVERSE => 0, + }, +); + +my %patch_mode_flavour = %{$patch_modes{stage}}; + +sub run_cmd_pipe { + if ($^O eq 'MSWin32' || $^O eq 'msys') { + my @invalid = grep {m/[":*]/} @_; + die "$^O does not support: @invalid\n" if @invalid; + my @args = map { m/ /o ? "\"$_\"": $_ } @_; + return qx{@args}; + } else { + my $fh = undef; + open($fh, '-|', @_) or die; + return <$fh>; + } +} + +my ($GIT_DIR) = run_cmd_pipe(qw(git rev-parse --git-dir)); + +if (!defined $GIT_DIR) { + exit(1); # rev-parse would have already said "not a git repo" +} +chomp($GIT_DIR); + +my %cquote_map = ( + "b" => chr(8), + "t" => chr(9), + "n" => chr(10), + "v" => chr(11), + "f" => chr(12), + "r" => chr(13), + "\\" => "\\", + "\042" => "\042", +); + +sub unquote_path { + local ($_) = @_; + my ($retval, $remainder); + if (!/^\042(.*)\042$/) { + return $_; + } + ($_, $retval) = ($1, ""); + while (/^([^\\]*)\\(.*)$/) { + $remainder = $2; + $retval .= $1; + for ($remainder) { + if (/^([0-3][0-7][0-7])(.*)$/) { + $retval .= chr(oct($1)); + $_ = $2; + last; + } + if (/^([\\\042btnvfr])(.*)$/) { + $retval .= $cquote_map{$1}; + $_ = $2; + last; + } + # This is malformed -- just return it as-is for now. + return $_[0]; + } + $_ = $remainder; + } + $retval .= $_; + return $retval; +} + +sub refresh { + my $fh; + open $fh, 'git update-index --refresh |' + or die; + while (<$fh>) { + ;# ignore 'needs update' + } + close $fh; +} + +sub list_untracked { + map { + chomp $_; + unquote_path($_); + } + run_cmd_pipe(qw(git ls-files --others --exclude-standard --), @ARGV); +} + +my $status_fmt = '%12s %12s %s'; +my $status_head = sprintf($status_fmt, 'staged', 'unstaged', 'path'); + +{ + my $initial; + sub is_initial_commit { + $initial = system('git rev-parse HEAD -- >/dev/null 2>&1') != 0 + unless defined $initial; + return $initial; + } +} + +sub get_empty_tree { + return '4b825dc642cb6eb9a060e54bf8d69288fbee4904'; +} + +# Returns list of hashes, contents of each of which are: +# VALUE: pathname +# BINARY: is a binary path +# INDEX: is index different from HEAD? +# FILE: is file different from index? +# INDEX_ADDDEL: is it add/delete between HEAD and index? +# FILE_ADDDEL: is it add/delete between index and file? + +sub list_modified { + my ($only) = @_; + my (%data, @return); + my ($add, $del, $adddel, $file); + my @tracked = (); + + if (@ARGV) { + @tracked = map { + chomp $_; + unquote_path($_); + } run_cmd_pipe(qw(git ls-files --), @ARGV); + return if (!@tracked); + } + + my $reference; + if (defined $patch_mode_revision and $patch_mode_revision ne 'HEAD') { + $reference = $patch_mode_revision; + } elsif (is_initial_commit()) { + $reference = get_empty_tree(); + } else { + $reference = 'HEAD'; + } + for (run_cmd_pipe(qw(git diff-index --cached + --numstat --summary), $reference, + '--', @tracked)) { + if (($add, $del, $file) = + /^([-\d]+) ([-\d]+) (.*)/) { + my ($change, $bin); + $file = unquote_path($file); + if ($add eq '-' && $del eq '-') { + $change = 'binary'; + $bin = 1; + } + else { + $change = "+$add/-$del"; + } + $data{$file} = { + INDEX => $change, + BINARY => $bin, + FILE => 'nothing', + } + } + elsif (($adddel, $file) = + /^ (create|delete) mode [0-7]+ (.*)$/) { + $file = unquote_path($file); + $data{$file}{INDEX_ADDDEL} = $adddel; + } + } + + for (run_cmd_pipe(qw(git diff-files --numstat --summary --), @tracked)) { + if (($add, $del, $file) = + /^([-\d]+) ([-\d]+) (.*)/) { + $file = unquote_path($file); + if (!exists $data{$file}) { + $data{$file} = +{ + INDEX => 'unchanged', + BINARY => 0, + }; + } + my ($change, $bin); + if ($add eq '-' && $del eq '-') { + $change = 'binary'; + $bin = 1; + } + else { + $change = "+$add/-$del"; + } + $data{$file}{FILE} = $change; + if ($bin) { + $data{$file}{BINARY} = 1; + } + } + elsif (($adddel, $file) = + /^ (create|delete) mode [0-7]+ (.*)$/) { + $file = unquote_path($file); + $data{$file}{FILE_ADDDEL} = $adddel; + } + } + + for (sort keys %data) { + my $it = $data{$_}; + + if ($only) { + if ($only eq 'index-only') { + next if ($it->{INDEX} eq 'unchanged'); + } + if ($only eq 'file-only') { + next if ($it->{FILE} eq 'nothing'); + } + } + push @return, +{ + VALUE => $_, + %$it, + }; + } + return @return; +} + +sub find_unique { + my ($string, @stuff) = @_; + my $found = undef; + for (my $i = 0; $i < @stuff; $i++) { + my $it = $stuff[$i]; + my $hit = undef; + if (ref $it) { + if ((ref $it) eq 'ARRAY') { + $it = $it->[0]; + } + else { + $it = $it->{VALUE}; + } + } + eval { + if ($it =~ /^$string/) { + $hit = 1; + }; + }; + if (defined $hit && defined $found) { + return undef; + } + if ($hit) { + $found = $i + 1; + } + } + return $found; +} + +# inserts string into trie and updates count for each character +sub update_trie { + my ($trie, $string) = @_; + foreach (split //, $string) { + $trie = $trie->{$_} ||= {COUNT => 0}; + $trie->{COUNT}++; + } +} + +# returns an array of tuples (prefix, remainder) +sub find_unique_prefixes { + my @stuff = @_; + my @return = (); + + # any single prefix exceeding the soft limit is omitted + # if any prefix exceeds the hard limit all are omitted + # 0 indicates no limit + my $soft_limit = 0; + my $hard_limit = 3; + + # build a trie modelling all possible options + my %trie; + foreach my $print (@stuff) { + if ((ref $print) eq 'ARRAY') { + $print = $print->[0]; + } + elsif ((ref $print) eq 'HASH') { + $print = $print->{VALUE}; + } + update_trie(\%trie, $print); + push @return, $print; + } + + # use the trie to find the unique prefixes + for (my $i = 0; $i < @return; $i++) { + my $ret = $return[$i]; + my @letters = split //, $ret; + my %search = %trie; + my ($prefix, $remainder); + my $j; + for ($j = 0; $j < @letters; $j++) { + my $letter = $letters[$j]; + if ($search{$letter}{COUNT} == 1) { + $prefix = substr $ret, 0, $j + 1; + $remainder = substr $ret, $j + 1; + last; + } + else { + my $prefix = substr $ret, 0, $j; + return () + if ($hard_limit && $j + 1 > $hard_limit); + } + %search = %{$search{$letter}}; + } + if (ord($letters[0]) > 127 || + ($soft_limit && $j + 1 > $soft_limit)) { + $prefix = undef; + $remainder = $ret; + } + $return[$i] = [$prefix, $remainder]; + } + return @return; +} + +# filters out prefixes which have special meaning to list_and_choose() +sub is_valid_prefix { + my $prefix = shift; + return (defined $prefix) && + !($prefix =~ /[\s,]/) && # separators + !($prefix =~ /^-/) && # deselection + !($prefix =~ /^\d+/) && # selection + ($prefix ne '*') && # "all" wildcard + ($prefix ne '?'); # prompt help +} + +# given a prefix/remainder tuple return a string with the prefix highlighted +# for now use square brackets; later might use ANSI colors (underline, bold) +sub highlight_prefix { + my $prefix = shift; + my $remainder = shift; + + if (!defined $prefix) { + return $remainder; + } + + if (!is_valid_prefix($prefix)) { + return "$prefix$remainder"; + } + + if (!$menu_use_color) { + return "[$prefix]$remainder"; + } + + return "$prompt_color$prefix$normal_color$remainder"; +} + +sub error_msg { + print STDERR colored $error_color, @_; +} + +sub list_and_choose { + my ($opts, @stuff) = @_; + my (@chosen, @return); + my $i; + my @prefixes = find_unique_prefixes(@stuff) unless $opts->{LIST_ONLY}; + + TOPLOOP: + while (1) { + my $last_lf = 0; + + if ($opts->{HEADER}) { + if (!$opts->{LIST_FLAT}) { + print " "; + } + print colored $header_color, "$opts->{HEADER}\n"; + } + for ($i = 0; $i < @stuff; $i++) { + my $chosen = $chosen[$i] ? '*' : ' '; + my $print = $stuff[$i]; + my $ref = ref $print; + my $highlighted = highlight_prefix(@{$prefixes[$i]}) + if @prefixes; + if ($ref eq 'ARRAY') { + $print = $highlighted || $print->[0]; + } + elsif ($ref eq 'HASH') { + my $value = $highlighted || $print->{VALUE}; + $print = sprintf($status_fmt, + $print->{INDEX}, + $print->{FILE}, + $value); + } + else { + $print = $highlighted || $print; + } + printf("%s%2d: %s", $chosen, $i+1, $print); + if (($opts->{LIST_FLAT}) && + (($i + 1) % ($opts->{LIST_FLAT}))) { + print "\t"; + $last_lf = 0; + } + else { + print "\n"; + $last_lf = 1; + } + } + if (!$last_lf) { + print "\n"; + } + + return if ($opts->{LIST_ONLY}); + + print colored $prompt_color, $opts->{PROMPT}; + if ($opts->{SINGLETON}) { + print "> "; + } + else { + print ">> "; + } + my $line = <STDIN>; + if (!$line) { + print "\n"; + $opts->{ON_EOF}->() if $opts->{ON_EOF}; + last; + } + chomp $line; + last if $line eq ''; + if ($line eq '?') { + $opts->{SINGLETON} ? + singleton_prompt_help_cmd() : + prompt_help_cmd(); + next TOPLOOP; + } + for my $choice (split(/[\s,]+/, $line)) { + my $choose = 1; + my ($bottom, $top); + + # Input that begins with '-'; unchoose + if ($choice =~ s/^-//) { + $choose = 0; + } + # A range can be specified like 5-7 or 5-. + if ($choice =~ /^(\d+)-(\d*)$/) { + ($bottom, $top) = ($1, length($2) ? $2 : 1 + @stuff); + } + elsif ($choice =~ /^\d+$/) { + $bottom = $top = $choice; + } + elsif ($choice eq '*') { + $bottom = 1; + $top = 1 + @stuff; + } + else { + $bottom = $top = find_unique($choice, @stuff); + if (!defined $bottom) { + error_msg "Huh ($choice)?\n"; + next TOPLOOP; + } + } + if ($opts->{SINGLETON} && $bottom != $top) { + error_msg "Huh ($choice)?\n"; + next TOPLOOP; + } + for ($i = $bottom-1; $i <= $top-1; $i++) { + next if (@stuff <= $i || $i < 0); + $chosen[$i] = $choose; + } + } + last if ($opts->{IMMEDIATE} || $line eq '*'); + } + for ($i = 0; $i < @stuff; $i++) { + if ($chosen[$i]) { + push @return, $stuff[$i]; + } + } + return @return; +} + +sub singleton_prompt_help_cmd { + print colored $help_color, <<\EOF ; +Prompt help: +1 - select a numbered item +foo - select item based on unique prefix + - (empty) select nothing +EOF +} + +sub prompt_help_cmd { + print colored $help_color, <<\EOF ; +Prompt help: +1 - select a single item +3-5 - select a range of items +2-3,6-9 - select multiple ranges +foo - select item based on unique prefix +-... - unselect specified items +* - choose all items + - (empty) finish selecting +EOF +} + +sub status_cmd { + list_and_choose({ LIST_ONLY => 1, HEADER => $status_head }, + list_modified()); + print "\n"; +} + +sub say_n_paths { + my $did = shift @_; + my $cnt = scalar @_; + print "$did "; + if (1 < $cnt) { + print "$cnt paths\n"; + } + else { + print "one path\n"; + } +} + +sub update_cmd { + my @mods = list_modified('file-only'); + return if (!@mods); + + my @update = list_and_choose({ PROMPT => 'Update', + HEADER => $status_head, }, + @mods); + if (@update) { + system(qw(git update-index --add --remove --), + map { $_->{VALUE} } @update); + say_n_paths('updated', @update); + } + print "\n"; +} + +sub revert_cmd { + my @update = list_and_choose({ PROMPT => 'Revert', + HEADER => $status_head, }, + list_modified()); + if (@update) { + if (is_initial_commit()) { + system(qw(git rm --cached), + map { $_->{VALUE} } @update); + } + else { + my @lines = run_cmd_pipe(qw(git ls-tree HEAD --), + map { $_->{VALUE} } @update); + my $fh; + open $fh, '| git update-index --index-info' + or die; + for (@lines) { + print $fh $_; + } + close($fh); + for (@update) { + if ($_->{INDEX_ADDDEL} && + $_->{INDEX_ADDDEL} eq 'create') { + system(qw(git update-index --force-remove --), + $_->{VALUE}); + print "note: $_->{VALUE} is untracked now.\n"; + } + } + } + refresh(); + say_n_paths('reverted', @update); + } + print "\n"; +} + +sub add_untracked_cmd { + my @add = list_and_choose({ PROMPT => 'Add untracked' }, + list_untracked()); + if (@add) { + system(qw(git update-index --add --), @add); + say_n_paths('added', @add); + } + print "\n"; +} + +sub run_git_apply { + my $cmd = shift; + my $fh; + open $fh, '| git ' . $cmd . " --recount --allow-overlap"; + print $fh @_; + return close $fh; +} + +sub parse_diff { + my ($path) = @_; + my @diff_cmd = split(" ", $patch_mode_flavour{DIFF}); + if (defined $patch_mode_revision) { + push @diff_cmd, $patch_mode_revision; + } + my @diff = run_cmd_pipe("git", @diff_cmd, "--", $path); + my @colored = (); + if ($diff_use_color) { + @colored = run_cmd_pipe("git", @diff_cmd, qw(--color --), $path); + } + my (@hunk) = { TEXT => [], DISPLAY => [], TYPE => 'header' }; + + for (my $i = 0; $i < @diff; $i++) { + if ($diff[$i] =~ /^@@ /) { + push @hunk, { TEXT => [], DISPLAY => [], + TYPE => 'hunk' }; + } + push @{$hunk[-1]{TEXT}}, $diff[$i]; + push @{$hunk[-1]{DISPLAY}}, + ($diff_use_color ? $colored[$i] : $diff[$i]); + } + return @hunk; +} + +sub parse_diff_header { + my $src = shift; + + my $head = { TEXT => [], DISPLAY => [], TYPE => 'header' }; + my $mode = { TEXT => [], DISPLAY => [], TYPE => 'mode' }; + my $deletion = { TEXT => [], DISPLAY => [], TYPE => 'deletion' }; + + for (my $i = 0; $i < @{$src->{TEXT}}; $i++) { + my $dest = + $src->{TEXT}->[$i] =~ /^(old|new) mode (\d+)$/ ? $mode : + $src->{TEXT}->[$i] =~ /^deleted file/ ? $deletion : + $head; + push @{$dest->{TEXT}}, $src->{TEXT}->[$i]; + push @{$dest->{DISPLAY}}, $src->{DISPLAY}->[$i]; + } + return ($head, $mode, $deletion); +} + +sub hunk_splittable { + my ($text) = @_; + + my @s = split_hunk($text); + return (1 < @s); +} + +sub parse_hunk_header { + my ($line) = @_; + my ($o_ofs, $o_cnt, $n_ofs, $n_cnt) = + $line =~ /^@@ -(\d+)(?:,(\d+))? \+(\d+)(?:,(\d+))? @@/; + $o_cnt = 1 unless defined $o_cnt; + $n_cnt = 1 unless defined $n_cnt; + return ($o_ofs, $o_cnt, $n_ofs, $n_cnt); +} + +sub split_hunk { + my ($text, $display) = @_; + my @split = (); + if (!defined $display) { + $display = $text; + } + # If there are context lines in the middle of a hunk, + # it can be split, but we would need to take care of + # overlaps later. + + my ($o_ofs, undef, $n_ofs) = parse_hunk_header($text->[0]); + my $hunk_start = 1; + + OUTER: + while (1) { + my $next_hunk_start = undef; + my $i = $hunk_start - 1; + my $this = +{ + TEXT => [], + DISPLAY => [], + TYPE => 'hunk', + OLD => $o_ofs, + NEW => $n_ofs, + OCNT => 0, + NCNT => 0, + ADDDEL => 0, + POSTCTX => 0, + USE => undef, + }; + + while (++$i < @$text) { + my $line = $text->[$i]; + my $display = $display->[$i]; + if ($line =~ /^ /) { + if ($this->{ADDDEL} && + !defined $next_hunk_start) { + # We have seen leading context and + # adds/dels and then here is another + # context, which is trailing for this + # split hunk and leading for the next + # one. + $next_hunk_start = $i; + } + push @{$this->{TEXT}}, $line; + push @{$this->{DISPLAY}}, $display; + $this->{OCNT}++; + $this->{NCNT}++; + if (defined $next_hunk_start) { + $this->{POSTCTX}++; + } + next; + } + + # add/del + if (defined $next_hunk_start) { + # We are done with the current hunk and + # this is the first real change for the + # next split one. + $hunk_start = $next_hunk_start; + $o_ofs = $this->{OLD} + $this->{OCNT}; + $n_ofs = $this->{NEW} + $this->{NCNT}; + $o_ofs -= $this->{POSTCTX}; + $n_ofs -= $this->{POSTCTX}; + push @split, $this; + redo OUTER; + } + push @{$this->{TEXT}}, $line; + push @{$this->{DISPLAY}}, $display; + $this->{ADDDEL}++; + if ($line =~ /^-/) { + $this->{OCNT}++; + } + else { + $this->{NCNT}++; + } + } + + push @split, $this; + last; + } + + for my $hunk (@split) { + $o_ofs = $hunk->{OLD}; + $n_ofs = $hunk->{NEW}; + my $o_cnt = $hunk->{OCNT}; + my $n_cnt = $hunk->{NCNT}; + + my $head = ("@@ -$o_ofs" . + (($o_cnt != 1) ? ",$o_cnt" : '') . + " +$n_ofs" . + (($n_cnt != 1) ? ",$n_cnt" : '') . + " @@\n"); + my $display_head = $head; + unshift @{$hunk->{TEXT}}, $head; + if ($diff_use_color) { + $display_head = colored($fraginfo_color, $head); + } + unshift @{$hunk->{DISPLAY}}, $display_head; + } + return @split; +} + +sub find_last_o_ctx { + my ($it) = @_; + my $text = $it->{TEXT}; + my ($o_ofs, $o_cnt) = parse_hunk_header($text->[0]); + my $i = @{$text}; + my $last_o_ctx = $o_ofs + $o_cnt; + while (0 < --$i) { + my $line = $text->[$i]; + if ($line =~ /^ /) { + $last_o_ctx--; + next; + } + last; + } + return $last_o_ctx; +} + +sub merge_hunk { + my ($prev, $this) = @_; + my ($o0_ofs, $o0_cnt, $n0_ofs, $n0_cnt) = + parse_hunk_header($prev->{TEXT}[0]); + my ($o1_ofs, $o1_cnt, $n1_ofs, $n1_cnt) = + parse_hunk_header($this->{TEXT}[0]); + + my (@line, $i, $ofs, $o_cnt, $n_cnt); + $ofs = $o0_ofs; + $o_cnt = $n_cnt = 0; + for ($i = 1; $i < @{$prev->{TEXT}}; $i++) { + my $line = $prev->{TEXT}[$i]; + if ($line =~ /^\+/) { + $n_cnt++; + push @line, $line; + next; + } + + last if ($o1_ofs <= $ofs); + + $o_cnt++; + $ofs++; + if ($line =~ /^ /) { + $n_cnt++; + } + push @line, $line; + } + + for ($i = 1; $i < @{$this->{TEXT}}; $i++) { + my $line = $this->{TEXT}[$i]; + if ($line =~ /^\+/) { + $n_cnt++; + push @line, $line; + next; + } + $ofs++; + $o_cnt++; + if ($line =~ /^ /) { + $n_cnt++; + } + push @line, $line; + } + my $head = ("@@ -$o0_ofs" . + (($o_cnt != 1) ? ",$o_cnt" : '') . + " +$n0_ofs" . + (($n_cnt != 1) ? ",$n_cnt" : '') . + " @@\n"); + @{$prev->{TEXT}} = ($head, @line); +} + +sub coalesce_overlapping_hunks { + my (@in) = @_; + my @out = (); + + my ($last_o_ctx, $last_was_dirty); + + for (grep { $_->{USE} } @in) { + if ($_->{TYPE} ne 'hunk') { + push @out, $_; + next; + } + my $text = $_->{TEXT}; + my ($o_ofs) = parse_hunk_header($text->[0]); + if (defined $last_o_ctx && + $o_ofs <= $last_o_ctx && + !$_->{DIRTY} && + !$last_was_dirty) { + merge_hunk($out[-1], $_); + } + else { + push @out, $_; + } + $last_o_ctx = find_last_o_ctx($out[-1]); + $last_was_dirty = $_->{DIRTY}; + } + return @out; +} + +sub reassemble_patch { + my $head = shift; + my @patch; + + # Include everything in the header except the beginning of the diff. + push @patch, (grep { !/^[-+]{3}/ } @$head); + + # Then include any headers from the hunk lines, which must + # come before any actual hunk. + while (@_ && $_[0] !~ /^@/) { + push @patch, shift; + } + + # Then begin the diff. + push @patch, grep { /^[-+]{3}/ } @$head; + + # And then the actual hunks. + push @patch, @_; + + return @patch; +} + +sub color_diff { + return map { + colored((/^@/ ? $fraginfo_color : + /^\+/ ? $diff_new_color : + /^-/ ? $diff_old_color : + $diff_plain_color), + $_); + } @_; +} + +sub edit_hunk_manually { + my ($oldtext) = @_; + + my $hunkfile = $repo->repo_path . "/addp-hunk-edit.diff"; + my $fh; + open $fh, '>', $hunkfile + or die "failed to open hunk edit file for writing: " . $!; + print $fh "# Manual hunk edit mode -- see bottom for a quick guide\n"; + print $fh @$oldtext; + my $participle = $patch_mode_flavour{PARTICIPLE}; + my $is_reverse = $patch_mode_flavour{IS_REVERSE}; + my ($remove_plus, $remove_minus) = $is_reverse ? ('-', '+') : ('+', '-'); + print $fh <<EOF; +# --- +# To remove '$remove_minus' lines, make them ' ' lines (context). +# To remove '$remove_plus' lines, delete them. +# Lines starting with # will be removed. +# +# If the patch applies cleanly, the edited hunk will immediately be +# marked for $participle. If it does not apply cleanly, you will be given +# an opportunity to edit again. If all lines of the hunk are removed, +# then the edit is aborted and the hunk is left unchanged. +EOF + close $fh; + + chomp(my $editor = run_cmd_pipe(qw(git var GIT_EDITOR))); + system('sh', '-c', $editor.' "$@"', $editor, $hunkfile); + + if ($? != 0) { + return undef; + } + + open $fh, '<', $hunkfile + or die "failed to open hunk edit file for reading: " . $!; + my @newtext = grep { !/^#/ } <$fh>; + close $fh; + unlink $hunkfile; + + # Abort if nothing remains + if (!grep { /\S/ } @newtext) { + return undef; + } + + # Reinsert the first hunk header if the user accidentally deleted it + if ($newtext[0] !~ /^@/) { + unshift @newtext, $oldtext->[0]; + } + return \@newtext; +} + +sub diff_applies { + my $fh; + return run_git_apply($patch_mode_flavour{APPLY_CHECK} . ' --check', + map { @{$_->{TEXT}} } @_); +} + +sub _restore_terminal_and_die { + ReadMode 'restore'; + print "\n"; + exit 1; +} + +sub prompt_single_character { + if ($use_readkey) { + local $SIG{TERM} = \&_restore_terminal_and_die; + local $SIG{INT} = \&_restore_terminal_and_die; + ReadMode 'cbreak'; + my $key = ReadKey 0; + ReadMode 'restore'; + if ($use_termcap and $key eq "\e") { + while (!defined $term_escapes{$key}) { + my $next = ReadKey 0.5; + last if (!defined $next); + $key .= $next; + } + $key =~ s/\e/^[/; + } + print "$key" if defined $key; + print "\n"; + return $key; + } else { + return <STDIN>; + } +} + +sub prompt_yesno { + my ($prompt) = @_; + while (1) { + print colored $prompt_color, $prompt; + my $line = prompt_single_character; + return 0 if $line =~ /^n/i; + return 1 if $line =~ /^y/i; + } +} + +sub edit_hunk_loop { + my ($head, $hunk, $ix) = @_; + my $text = $hunk->[$ix]->{TEXT}; + + while (1) { + $text = edit_hunk_manually($text); + if (!defined $text) { + return undef; + } + my $newhunk = { + TEXT => $text, + TYPE => $hunk->[$ix]->{TYPE}, + USE => 1, + DIRTY => 1, + }; + if (diff_applies($head, + @{$hunk}[0..$ix-1], + $newhunk, + @{$hunk}[$ix+1..$#{$hunk}])) { + $newhunk->{DISPLAY} = [color_diff(@{$text})]; + return $newhunk; + } + else { + prompt_yesno( + 'Your edited hunk does not apply. Edit again ' + . '(saying "no" discards!) [y/n]? ' + ) or return undef; + } + } +} + +sub help_patch_cmd { + my $verb = lc $patch_mode_flavour{VERB}; + my $target = $patch_mode_flavour{TARGET}; + print colored $help_color, <<EOF ; +y - $verb this hunk$target +n - do not $verb this hunk$target +q - quit; do not $verb this hunk nor any of the remaining ones +a - $verb this hunk and all later hunks in the file +d - do not $verb this hunk nor any of the later hunks in the file +g - select a hunk to go to +/ - search for a hunk matching the given regex +j - leave this hunk undecided, see next undecided hunk +J - leave this hunk undecided, see next hunk +k - leave this hunk undecided, see previous undecided hunk +K - leave this hunk undecided, see previous hunk +s - split the current hunk into smaller hunks +e - manually edit the current hunk +? - print help +EOF +} + +sub apply_patch { + my $cmd = shift; + my $ret = run_git_apply $cmd, @_; + if (!$ret) { + print STDERR @_; + } + return $ret; +} + +sub apply_patch_for_checkout_commit { + my $reverse = shift; + my $applies_index = run_git_apply 'apply '.$reverse.' --cached --check', @_; + my $applies_worktree = run_git_apply 'apply '.$reverse.' --check', @_; + + if ($applies_worktree && $applies_index) { + run_git_apply 'apply '.$reverse.' --cached', @_; + run_git_apply 'apply '.$reverse, @_; + return 1; + } elsif (!$applies_index) { + print colored $error_color, "The selected hunks do not apply to the index!\n"; + if (prompt_yesno "Apply them to the worktree anyway? ") { + return run_git_apply 'apply '.$reverse, @_; + } else { + print colored $error_color, "Nothing was applied.\n"; + return 0; + } + } else { + print STDERR @_; + return 0; + } +} + +sub patch_update_cmd { + my @all_mods = list_modified($patch_mode_flavour{FILTER}); + my @mods = grep { !($_->{BINARY}) } @all_mods; + my @them; + + if (!@mods) { + if (@all_mods) { + print STDERR "Only binary files changed.\n"; + } else { + print STDERR "No changes.\n"; + } + return 0; + } + if ($patch_mode) { + @them = @mods; + } + else { + @them = list_and_choose({ PROMPT => 'Patch update', + HEADER => $status_head, }, + @mods); + } + for (@them) { + return 0 if patch_update_file($_->{VALUE}); + } +} + +# Generate a one line summary of a hunk. +sub summarize_hunk { + my $rhunk = shift; + my $summary = $rhunk->{TEXT}[0]; + + # Keep the line numbers, discard extra context. + $summary =~ s/@@(.*?)@@.*/$1 /s; + $summary .= " " x (20 - length $summary); + + # Add some user context. + for my $line (@{$rhunk->{TEXT}}) { + if ($line =~ m/^[+-].*\w/) { + $summary .= $line; + last; + } + } + + chomp $summary; + return substr($summary, 0, 80) . "\n"; +} + + +# Print a one-line summary of each hunk in the array ref in +# the first argument, starting wih the index in the 2nd. +sub display_hunks { + my ($hunks, $i) = @_; + my $ctr = 0; + $i ||= 0; + for (; $i < @$hunks && $ctr < 20; $i++, $ctr++) { + my $status = " "; + if (defined $hunks->[$i]{USE}) { + $status = $hunks->[$i]{USE} ? "+" : "-"; + } + printf "%s%2d: %s", + $status, + $i + 1, + summarize_hunk($hunks->[$i]); + } + return $i; +} + +sub patch_update_file { + my $quit = 0; + my ($ix, $num); + my $path = shift; + my ($head, @hunk) = parse_diff($path); + ($head, my $mode, my $deletion) = parse_diff_header($head); + for (@{$head->{DISPLAY}}) { + print; + } + + if (@{$mode->{TEXT}}) { + unshift @hunk, $mode; + } + if (@{$deletion->{TEXT}}) { + foreach my $hunk (@hunk) { + push @{$deletion->{TEXT}}, @{$hunk->{TEXT}}; + push @{$deletion->{DISPLAY}}, @{$hunk->{DISPLAY}}; + } + @hunk = ($deletion); + } + + $num = scalar @hunk; + $ix = 0; + + while (1) { + my ($prev, $next, $other, $undecided, $i); + $other = ''; + + if ($num <= $ix) { + $ix = 0; + } + for ($i = 0; $i < $ix; $i++) { + if (!defined $hunk[$i]{USE}) { + $prev = 1; + $other .= ',k'; + last; + } + } + if ($ix) { + $other .= ',K'; + } + for ($i = $ix + 1; $i < $num; $i++) { + if (!defined $hunk[$i]{USE}) { + $next = 1; + $other .= ',j'; + last; + } + } + if ($ix < $num - 1) { + $other .= ',J'; + } + if ($num > 1) { + $other .= ',g'; + } + for ($i = 0; $i < $num; $i++) { + if (!defined $hunk[$i]{USE}) { + $undecided = 1; + last; + } + } + last if (!$undecided); + + if ($hunk[$ix]{TYPE} eq 'hunk' && + hunk_splittable($hunk[$ix]{TEXT})) { + $other .= ',s'; + } + if ($hunk[$ix]{TYPE} eq 'hunk') { + $other .= ',e'; + } + for (@{$hunk[$ix]{DISPLAY}}) { + print; + } + print colored $prompt_color, $patch_mode_flavour{VERB}, + ($hunk[$ix]{TYPE} eq 'mode' ? ' mode change' : + $hunk[$ix]{TYPE} eq 'deletion' ? ' deletion' : + ' this hunk'), + $patch_mode_flavour{TARGET}, + " [y,n,q,a,d,/$other,?]? "; + my $line = prompt_single_character; + if ($line) { + if ($line =~ /^y/i) { + $hunk[$ix]{USE} = 1; + } + elsif ($line =~ /^n/i) { + $hunk[$ix]{USE} = 0; + } + elsif ($line =~ /^a/i) { + while ($ix < $num) { + if (!defined $hunk[$ix]{USE}) { + $hunk[$ix]{USE} = 1; + } + $ix++; + } + next; + } + elsif ($other =~ /g/ && $line =~ /^g(.*)/) { + my $response = $1; + my $no = $ix > 10 ? $ix - 10 : 0; + while ($response eq '') { + my $extra = ""; + $no = display_hunks(\@hunk, $no); + if ($no < $num) { + $extra = " (<ret> to see more)"; + } + print "go to which hunk$extra? "; + $response = <STDIN>; + if (!defined $response) { + $response = ''; + } + chomp $response; + } + if ($response !~ /^\s*\d+\s*$/) { + error_msg "Invalid number: '$response'\n"; + } elsif (0 < $response && $response <= $num) { + $ix = $response - 1; + } else { + error_msg "Sorry, only $num hunks available.\n"; + } + next; + } + elsif ($line =~ /^d/i) { + while ($ix < $num) { + if (!defined $hunk[$ix]{USE}) { + $hunk[$ix]{USE} = 0; + } + $ix++; + } + next; + } + elsif ($line =~ /^q/i) { + for ($i = 0; $i < $num; $i++) { + if (!defined $hunk[$i]{USE}) { + $hunk[$i]{USE} = 0; + } + } + $quit = 1; + last; + } + elsif ($line =~ m|^/(.*)|) { + my $regex = $1; + if ($1 eq "") { + print colored $prompt_color, "search for regex? "; + $regex = <STDIN>; + if (defined $regex) { + chomp $regex; + } + } + my $search_string; + eval { + $search_string = qr{$regex}m; + }; + if ($@) { + my ($err,$exp) = ($@, $1); + $err =~ s/ at .*git-add--interactive line \d+, <STDIN> line \d+.*$//; + error_msg "Malformed search regexp $exp: $err\n"; + next; + } + my $iy = $ix; + while (1) { + my $text = join ("", @{$hunk[$iy]{TEXT}}); + last if ($text =~ $search_string); + $iy++; + $iy = 0 if ($iy >= $num); + if ($ix == $iy) { + error_msg "No hunk matches the given pattern\n"; + last; + } + } + $ix = $iy; + next; + } + elsif ($line =~ /^K/) { + if ($other =~ /K/) { + $ix--; + } + else { + error_msg "No previous hunk\n"; + } + next; + } + elsif ($line =~ /^J/) { + if ($other =~ /J/) { + $ix++; + } + else { + error_msg "No next hunk\n"; + } + next; + } + elsif ($line =~ /^k/) { + if ($other =~ /k/) { + while (1) { + $ix--; + last if (!$ix || + !defined $hunk[$ix]{USE}); + } + } + else { + error_msg "No previous hunk\n"; + } + next; + } + elsif ($line =~ /^j/) { + if ($other !~ /j/) { + error_msg "No next hunk\n"; + next; + } + } + elsif ($other =~ /s/ && $line =~ /^s/) { + my @split = split_hunk($hunk[$ix]{TEXT}, $hunk[$ix]{DISPLAY}); + if (1 < @split) { + print colored $header_color, "Split into ", + scalar(@split), " hunks.\n"; + } + splice (@hunk, $ix, 1, @split); + $num = scalar @hunk; + next; + } + elsif ($other =~ /e/ && $line =~ /^e/) { + my $newhunk = edit_hunk_loop($head, \@hunk, $ix); + if (defined $newhunk) { + splice @hunk, $ix, 1, $newhunk; + } + } + else { + help_patch_cmd($other); + next; + } + # soft increment + while (1) { + $ix++; + last if ($ix >= $num || + !defined $hunk[$ix]{USE}); + } + } + } + + @hunk = coalesce_overlapping_hunks(@hunk); + + my $n_lofs = 0; + my @result = (); + for (@hunk) { + if ($_->{USE}) { + push @result, @{$_->{TEXT}}; + } + } + + if (@result) { + my $fh; + my @patch = reassemble_patch($head->{TEXT}, @result); + my $apply_routine = $patch_mode_flavour{APPLY}; + &$apply_routine(@patch); + refresh(); + } + + print "\n"; + return $quit; +} + +sub diff_cmd { + my @mods = list_modified('index-only'); + @mods = grep { !($_->{BINARY}) } @mods; + return if (!@mods); + my (@them) = list_and_choose({ PROMPT => 'Review diff', + IMMEDIATE => 1, + HEADER => $status_head, }, + @mods); + return if (!@them); + my $reference = is_initial_commit() ? get_empty_tree() : 'HEAD'; + system(qw(git diff -p --cached), $reference, '--', + map { $_->{VALUE} } @them); +} + +sub quit_cmd { + print "Bye.\n"; + exit(0); +} + +sub help_cmd { + print colored $help_color, <<\EOF ; +status - show paths with changes +update - add working tree state to the staged set of changes +revert - revert staged set of changes back to the HEAD version +patch - pick hunks and update selectively +diff - view diff between HEAD and index +add untracked - add contents of untracked files to the staged set of changes +EOF +} + +sub process_args { + return unless @ARGV; + my $arg = shift @ARGV; + if ($arg =~ /--patch(?:=(.*))?/) { + if (defined $1) { + if ($1 eq 'reset') { + $patch_mode = 'reset_head'; + $patch_mode_revision = 'HEAD'; + $arg = shift @ARGV or die "missing --"; + if ($arg ne '--') { + $patch_mode_revision = $arg; + $patch_mode = ($arg eq 'HEAD' ? + 'reset_head' : 'reset_nothead'); + $arg = shift @ARGV or die "missing --"; + } + } elsif ($1 eq 'checkout') { + $arg = shift @ARGV or die "missing --"; + if ($arg eq '--') { + $patch_mode = 'checkout_index'; + } else { + $patch_mode_revision = $arg; + $patch_mode = ($arg eq 'HEAD' ? + 'checkout_head' : 'checkout_nothead'); + $arg = shift @ARGV or die "missing --"; + } + } elsif ($1 eq 'stage' or $1 eq 'stash') { + $patch_mode = $1; + $arg = shift @ARGV or die "missing --"; + } else { + die "unknown --patch mode: $1"; + } + } else { + $patch_mode = 'stage'; + $arg = shift @ARGV or die "missing --"; + } + die "invalid argument $arg, expecting --" + unless $arg eq "--"; + %patch_mode_flavour = %{$patch_modes{$patch_mode}}; + } + elsif ($arg ne "--") { + die "invalid argument $arg, expecting --"; + } +} + +sub main_loop { + my @cmd = ([ 'status', \&status_cmd, ], + [ 'update', \&update_cmd, ], + [ 'revert', \&revert_cmd, ], + [ 'add untracked', \&add_untracked_cmd, ], + [ 'patch', \&patch_update_cmd, ], + [ 'diff', \&diff_cmd, ], + [ 'quit', \&quit_cmd, ], + [ 'help', \&help_cmd, ], + ); + while (1) { + my ($it) = list_and_choose({ PROMPT => 'What now', + SINGLETON => 1, + LIST_FLAT => 4, + HEADER => '*** Commands ***', + ON_EOF => \&quit_cmd, + IMMEDIATE => 1 }, @cmd); + if ($it) { + eval { + $it->[1]->(); + }; + if ($@) { + print "$@"; + } + } + } +} + +process_args(); +refresh(); +if ($patch_mode) { + patch_update_cmd(); +} +else { + status_cmd(); + main_loop(); +} |