804 lines
16 KiB
Perl
Executable File
804 lines
16 KiB
Perl
Executable File
#!/usr/bin/perl -w
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use strict;
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sub run_cmd_pipe {
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my $fh = undef;
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open($fh, '-|', @_) or die;
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return <$fh>;
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}
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my ($GIT_DIR) = run_cmd_pipe(qw(git rev-parse --git-dir));
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if (!defined $GIT_DIR) {
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exit(1); # rev-parse would have already said "not a git repo"
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}
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chomp($GIT_DIR);
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sub refresh {
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my $fh;
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open $fh, '-|', qw(git update-index --refresh)
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or die;
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while (<$fh>) {
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;# ignore 'needs update'
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}
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close $fh;
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}
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sub list_untracked {
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map {
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chomp $_;
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$_;
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}
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run_cmd_pipe(qw(git ls-files --others
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--exclude-per-directory=.gitignore),
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"--exclude-from=$GIT_DIR/info/exclude",
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'--', @_);
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}
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my $status_fmt = '%12s %12s %s';
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my $status_head = sprintf($status_fmt, 'staged', 'unstaged', 'path');
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# Returns list of hashes, contents of each of which are:
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# PRINT: print message
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# VALUE: pathname
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# BINARY: is a binary path
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# INDEX: is index different from HEAD?
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# FILE: is file different from index?
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# INDEX_ADDDEL: is it add/delete between HEAD and index?
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# FILE_ADDDEL: is it add/delete between index and file?
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sub list_modified {
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my ($only) = @_;
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my (%data, @return);
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my ($add, $del, $adddel, $file);
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for (run_cmd_pipe(qw(git diff-index --cached
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--numstat --summary HEAD))) {
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if (($add, $del, $file) =
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/^([-\d]+) ([-\d]+) (.*)/) {
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my ($change, $bin);
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if ($add eq '-' && $del eq '-') {
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$change = 'binary';
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$bin = 1;
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}
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else {
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$change = "+$add/-$del";
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}
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$data{$file} = {
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INDEX => $change,
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BINARY => $bin,
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FILE => 'nothing',
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}
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}
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elsif (($adddel, $file) =
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/^ (create|delete) mode [0-7]+ (.*)$/) {
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$data{$file}{INDEX_ADDDEL} = $adddel;
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}
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}
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for (run_cmd_pipe(qw(git diff-files --numstat --summary))) {
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if (($add, $del, $file) =
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/^([-\d]+) ([-\d]+) (.*)/) {
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if (!exists $data{$file}) {
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$data{$file} = +{
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INDEX => 'unchanged',
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BINARY => 0,
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};
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}
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my ($change, $bin);
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if ($add eq '-' && $del eq '-') {
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$change = 'binary';
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$bin = 1;
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}
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else {
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$change = "+$add/-$del";
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}
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$data{$file}{FILE} = $change;
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if ($bin) {
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$data{$file}{BINARY} = 1;
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}
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}
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elsif (($adddel, $file) =
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/^ (create|delete) mode [0-7]+ (.*)$/) {
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$data{$file}{FILE_ADDDEL} = $adddel;
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}
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}
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for (sort keys %data) {
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my $it = $data{$_};
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if ($only) {
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if ($only eq 'index-only') {
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next if ($it->{INDEX} eq 'unchanged');
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}
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if ($only eq 'file-only') {
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next if ($it->{FILE} eq 'nothing');
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}
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}
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push @return, +{
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VALUE => $_,
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PRINT => (sprintf $status_fmt,
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$it->{INDEX}, $it->{FILE}, $_),
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%$it,
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};
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}
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return @return;
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}
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sub find_unique {
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my ($string, @stuff) = @_;
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my $found = undef;
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for (my $i = 0; $i < @stuff; $i++) {
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my $it = $stuff[$i];
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my $hit = undef;
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if (ref $it) {
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if ((ref $it) eq 'ARRAY') {
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$it = $it->[0];
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}
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else {
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$it = $it->{VALUE};
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}
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}
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eval {
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if ($it =~ /^$string/) {
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$hit = 1;
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};
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};
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if (defined $hit && defined $found) {
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return undef;
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}
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if ($hit) {
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$found = $i + 1;
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}
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}
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return $found;
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}
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sub list_and_choose {
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my ($opts, @stuff) = @_;
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my (@chosen, @return);
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my $i;
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TOPLOOP:
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while (1) {
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my $last_lf = 0;
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if ($opts->{HEADER}) {
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if (!$opts->{LIST_FLAT}) {
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print " ";
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}
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print "$opts->{HEADER}\n";
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}
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for ($i = 0; $i < @stuff; $i++) {
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my $chosen = $chosen[$i] ? '*' : ' ';
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my $print = $stuff[$i];
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if (ref $print) {
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if ((ref $print) eq 'ARRAY') {
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$print = $print->[0];
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}
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else {
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$print = $print->{PRINT};
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}
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}
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printf("%s%2d: %s", $chosen, $i+1, $print);
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if (($opts->{LIST_FLAT}) &&
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(($i + 1) % ($opts->{LIST_FLAT}))) {
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print "\t";
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$last_lf = 0;
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}
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else {
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print "\n";
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$last_lf = 1;
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}
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}
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if (!$last_lf) {
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print "\n";
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}
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return if ($opts->{LIST_ONLY});
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print $opts->{PROMPT};
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if ($opts->{SINGLETON}) {
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print "> ";
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}
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else {
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print ">> ";
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}
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my $line = <STDIN>;
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last if (!$line);
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chomp $line;
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my $donesomething = 0;
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for my $choice (split(/[\s,]+/, $line)) {
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my $choose = 1;
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my ($bottom, $top);
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# Input that begins with '-'; unchoose
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if ($choice =~ s/^-//) {
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$choose = 0;
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}
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# A range can be specified like 5-7
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if ($choice =~ /^(\d+)-(\d+)$/) {
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($bottom, $top) = ($1, $2);
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}
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elsif ($choice =~ /^\d+$/) {
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$bottom = $top = $choice;
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}
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elsif ($choice eq '*') {
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$bottom = 1;
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$top = 1 + @stuff;
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}
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else {
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$bottom = $top = find_unique($choice, @stuff);
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if (!defined $bottom) {
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print "Huh ($choice)?\n";
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next TOPLOOP;
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}
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}
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if ($opts->{SINGLETON} && $bottom != $top) {
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print "Huh ($choice)?\n";
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next TOPLOOP;
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}
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for ($i = $bottom-1; $i <= $top-1; $i++) {
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next if (@stuff <= $i);
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$chosen[$i] = $choose;
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$donesomething++;
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}
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}
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last if (!$donesomething || $opts->{IMMEDIATE});
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}
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for ($i = 0; $i < @stuff; $i++) {
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if ($chosen[$i]) {
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push @return, $stuff[$i];
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}
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}
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return @return;
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}
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sub status_cmd {
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list_and_choose({ LIST_ONLY => 1, HEADER => $status_head },
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list_modified());
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print "\n";
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}
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sub say_n_paths {
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my $did = shift @_;
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my $cnt = scalar @_;
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print "$did ";
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if (1 < $cnt) {
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print "$cnt paths\n";
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}
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else {
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print "one path\n";
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}
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}
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sub update_cmd {
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my @mods = list_modified('file-only');
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return if (!@mods);
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my @update = list_and_choose({ PROMPT => 'Update',
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HEADER => $status_head, },
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@mods);
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if (@update) {
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system(qw(git update-index --add --remove --),
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map { $_->{VALUE} } @update);
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say_n_paths('updated', @update);
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}
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print "\n";
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}
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sub revert_cmd {
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my @update = list_and_choose({ PROMPT => 'Revert',
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HEADER => $status_head, },
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list_modified());
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if (@update) {
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my @lines = run_cmd_pipe(qw(git ls-tree HEAD --),
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map { $_->{VALUE} } @update);
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my $fh;
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open $fh, '|-', qw(git update-index --index-info)
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or die;
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for (@lines) {
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print $fh $_;
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}
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close($fh);
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for (@update) {
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if ($_->{INDEX_ADDDEL} &&
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$_->{INDEX_ADDDEL} eq 'create') {
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system(qw(git update-index --force-remove --),
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$_->{VALUE});
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print "note: $_->{VALUE} is untracked now.\n";
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}
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}
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refresh();
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say_n_paths('reverted', @update);
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}
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print "\n";
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}
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sub add_untracked_cmd {
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my @add = list_and_choose({ PROMPT => 'Add untracked' },
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list_untracked());
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if (@add) {
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system(qw(git update-index --add --), @add);
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say_n_paths('added', @add);
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}
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print "\n";
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}
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sub parse_diff {
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my ($path) = @_;
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my @diff = run_cmd_pipe(qw(git diff-files -p --), $path);
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my (@hunk) = { TEXT => [] };
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for (@diff) {
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if (/^@@ /) {
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push @hunk, { TEXT => [] };
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}
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push @{$hunk[-1]{TEXT}}, $_;
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}
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return @hunk;
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}
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sub hunk_splittable {
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my ($text) = @_;
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my @s = split_hunk($text);
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return (1 < @s);
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}
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sub parse_hunk_header {
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my ($line) = @_;
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my ($o_ofs, $o_cnt, $n_ofs, $n_cnt) =
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$line =~ /^@@ -(\d+)(?:,(\d+)) \+(\d+)(?:,(\d+)) @@/;
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return ($o_ofs, $o_cnt, $n_ofs, $n_cnt);
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}
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sub split_hunk {
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my ($text) = @_;
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my @split = ();
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# If there are context lines in the middle of a hunk,
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# it can be split, but we would need to take care of
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# overlaps later.
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my ($o_ofs, $o_cnt, $n_ofs, $n_cnt) = parse_hunk_header($text->[0]);
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my $hunk_start = 1;
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my $next_hunk_start;
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OUTER:
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while (1) {
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my $next_hunk_start = undef;
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my $i = $hunk_start - 1;
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my $this = +{
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TEXT => [],
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OLD => $o_ofs,
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NEW => $n_ofs,
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OCNT => 0,
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NCNT => 0,
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ADDDEL => 0,
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POSTCTX => 0,
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};
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while (++$i < @$text) {
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my $line = $text->[$i];
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if ($line =~ /^ /) {
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if ($this->{ADDDEL} &&
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!defined $next_hunk_start) {
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# We have seen leading context and
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# adds/dels and then here is another
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# context, which is trailing for this
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# split hunk and leading for the next
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# one.
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$next_hunk_start = $i;
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}
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push @{$this->{TEXT}}, $line;
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$this->{OCNT}++;
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$this->{NCNT}++;
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if (defined $next_hunk_start) {
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$this->{POSTCTX}++;
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}
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next;
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}
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# add/del
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if (defined $next_hunk_start) {
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# We are done with the current hunk and
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# this is the first real change for the
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# next split one.
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$hunk_start = $next_hunk_start;
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$o_ofs = $this->{OLD} + $this->{OCNT};
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$n_ofs = $this->{NEW} + $this->{NCNT};
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$o_ofs -= $this->{POSTCTX};
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$n_ofs -= $this->{POSTCTX};
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push @split, $this;
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redo OUTER;
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}
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push @{$this->{TEXT}}, $line;
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$this->{ADDDEL}++;
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if ($line =~ /^-/) {
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$this->{OCNT}++;
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}
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else {
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$this->{NCNT}++;
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}
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}
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push @split, $this;
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last;
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}
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for my $hunk (@split) {
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$o_ofs = $hunk->{OLD};
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$n_ofs = $hunk->{NEW};
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$o_cnt = $hunk->{OCNT};
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$n_cnt = $hunk->{NCNT};
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my $head = ("@@ -$o_ofs" .
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(($o_cnt != 1) ? ",$o_cnt" : '') .
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" +$n_ofs" .
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(($n_cnt != 1) ? ",$n_cnt" : '') .
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" @@\n");
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unshift @{$hunk->{TEXT}}, $head;
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}
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return map { $_->{TEXT} } @split;
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}
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sub find_last_o_ctx {
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my ($it) = @_;
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my $text = $it->{TEXT};
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my ($o_ofs, $o_cnt, $n_ofs, $n_cnt) = parse_hunk_header($text->[0]);
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my $i = @{$text};
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my $last_o_ctx = $o_ofs + $o_cnt;
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while (0 < --$i) {
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my $line = $text->[$i];
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if ($line =~ /^ /) {
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$last_o_ctx--;
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next;
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}
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last;
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}
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return $last_o_ctx;
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}
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sub merge_hunk {
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my ($prev, $this) = @_;
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my ($o0_ofs, $o0_cnt, $n0_ofs, $n0_cnt) =
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parse_hunk_header($prev->{TEXT}[0]);
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my ($o1_ofs, $o1_cnt, $n1_ofs, $n1_cnt) =
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parse_hunk_header($this->{TEXT}[0]);
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my (@line, $i, $ofs, $o_cnt, $n_cnt);
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$ofs = $o0_ofs;
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$o_cnt = $n_cnt = 0;
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for ($i = 1; $i < @{$prev->{TEXT}}; $i++) {
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my $line = $prev->{TEXT}[$i];
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if ($line =~ /^\+/) {
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$n_cnt++;
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push @line, $line;
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next;
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}
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last if ($o1_ofs <= $ofs);
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$o_cnt++;
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$ofs++;
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if ($line =~ /^ /) {
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$n_cnt++;
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}
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push @line, $line;
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}
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for ($i = 1; $i < @{$this->{TEXT}}; $i++) {
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my $line = $this->{TEXT}[$i];
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if ($line =~ /^\+/) {
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$n_cnt++;
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push @line, $line;
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next;
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}
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$ofs++;
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$o_cnt++;
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if ($line =~ /^ /) {
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$n_cnt++;
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}
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push @line, $line;
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}
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my $head = ("@@ -$o0_ofs" .
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(($o_cnt != 1) ? ",$o_cnt" : '') .
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" +$n0_ofs" .
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(($n_cnt != 1) ? ",$n_cnt" : '') .
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" @@\n");
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@{$prev->{TEXT}} = ($head, @line);
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}
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sub coalesce_overlapping_hunks {
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my (@in) = @_;
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my @out = ();
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my ($last_o_ctx);
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for (grep { $_->{USE} } @in) {
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my $text = $_->{TEXT};
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my ($o_ofs, $o_cnt, $n_ofs, $n_cnt) =
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parse_hunk_header($text->[0]);
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if (defined $last_o_ctx &&
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$o_ofs <= $last_o_ctx) {
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merge_hunk($out[-1], $_);
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}
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else {
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push @out, $_;
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}
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$last_o_ctx = find_last_o_ctx($out[-1]);
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}
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return @out;
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}
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sub help_patch_cmd {
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print <<\EOF ;
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y - stage this hunk
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n - do not stage this hunk
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a - stage this and all the remaining hunks
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d - do not stage this hunk nor any of the remaining hunks
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j - leave this hunk undecided, see next undecided hunk
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J - leave this hunk undecided, see next hunk
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k - leave this hunk undecided, see previous undecided hunk
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K - leave this hunk undecided, see previous hunk
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s - split the current hunk into smaller hunks
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EOF
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}
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sub patch_update_cmd {
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my @mods = list_modified('file-only');
|
|
@mods = grep { !($_->{BINARY}) } @mods;
|
|
return if (!@mods);
|
|
|
|
my ($it) = list_and_choose({ PROMPT => 'Patch update',
|
|
SINGLETON => 1,
|
|
IMMEDIATE => 1,
|
|
HEADER => $status_head, },
|
|
@mods);
|
|
return if (!$it);
|
|
|
|
my ($ix, $num);
|
|
my $path = $it->{VALUE};
|
|
my ($head, @hunk) = parse_diff($path);
|
|
for (@{$head->{TEXT}}) {
|
|
print;
|
|
}
|
|
$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) {
|
|
$other .= '/J';
|
|
}
|
|
for ($i = 0; $i < $num; $i++) {
|
|
if (!defined $hunk[$i]{USE}) {
|
|
$undecided = 1;
|
|
last;
|
|
}
|
|
}
|
|
last if (!$undecided);
|
|
|
|
if (hunk_splittable($hunk[$ix]{TEXT})) {
|
|
$other .= '/s';
|
|
}
|
|
for (@{$hunk[$ix]{TEXT}}) {
|
|
print;
|
|
}
|
|
print "Stage this hunk [y/n/a/d$other/?]? ";
|
|
my $line = <STDIN>;
|
|
if ($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;
|
|
}
|
|
$ix++;
|
|
}
|
|
next;
|
|
}
|
|
elsif ($line =~ /^d/i) {
|
|
while ($ix < $num) {
|
|
if (!defined $hunk[$ix]{USE}) {
|
|
$hunk[$ix]{USE} = 0;
|
|
}
|
|
$ix++;
|
|
}
|
|
next;
|
|
}
|
|
elsif ($other =~ /K/ && $line =~ /^K/) {
|
|
$ix--;
|
|
next;
|
|
}
|
|
elsif ($other =~ /J/ && $line =~ /^J/) {
|
|
$ix++;
|
|
next;
|
|
}
|
|
elsif ($other =~ /k/ && $line =~ /^k/) {
|
|
while (1) {
|
|
$ix--;
|
|
last if (!$ix ||
|
|
!defined $hunk[$ix]{USE});
|
|
}
|
|
next;
|
|
}
|
|
elsif ($other =~ /j/ && $line =~ /^j/) {
|
|
while (1) {
|
|
$ix++;
|
|
last if ($ix >= $num ||
|
|
!defined $hunk[$ix]{USE});
|
|
}
|
|
next;
|
|
}
|
|
elsif ($other =~ /s/ && $line =~ /^s/) {
|
|
my @split = split_hunk($hunk[$ix]{TEXT});
|
|
if (1 < @split) {
|
|
print "Split into ",
|
|
scalar(@split), " hunks.\n";
|
|
}
|
|
splice(@hunk, $ix, 1,
|
|
map { +{ TEXT => $_, USE => undef } }
|
|
@split);
|
|
$num = scalar @hunk;
|
|
next;
|
|
}
|
|
else {
|
|
help_patch_cmd($other);
|
|
next;
|
|
}
|
|
# soft increment
|
|
while (1) {
|
|
$ix++;
|
|
last if ($ix >= $num ||
|
|
!defined $hunk[$ix]{USE});
|
|
}
|
|
}
|
|
}
|
|
|
|
@hunk = coalesce_overlapping_hunks(@hunk);
|
|
|
|
my ($o_lofs, $n_lofs) = (0, 0);
|
|
my @result = ();
|
|
for (@hunk) {
|
|
my $text = $_->{TEXT};
|
|
my ($o_ofs, $o_cnt, $n_ofs, $n_cnt) =
|
|
parse_hunk_header($text->[0]);
|
|
|
|
if (!$_->{USE}) {
|
|
if (!defined $o_cnt) { $o_cnt = 1; }
|
|
if (!defined $n_cnt) { $n_cnt = 1; }
|
|
|
|
# We would have added ($n_cnt - $o_cnt) lines
|
|
# to the postimage if we were to use this hunk,
|
|
# but we didn't. So the line number that the next
|
|
# hunk starts at would be shifted by that much.
|
|
$n_lofs -= ($n_cnt - $o_cnt);
|
|
next;
|
|
}
|
|
else {
|
|
if ($n_lofs) {
|
|
$n_ofs += $n_lofs;
|
|
$text->[0] = ("@@ -$o_ofs" .
|
|
((defined $o_cnt)
|
|
? ",$o_cnt" : '') .
|
|
" +$n_ofs" .
|
|
((defined $n_cnt)
|
|
? ",$n_cnt" : '') .
|
|
" @@\n");
|
|
}
|
|
for (@$text) {
|
|
push @result, $_;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (@result) {
|
|
my $fh;
|
|
|
|
open $fh, '|-', qw(git apply --cached);
|
|
for (@{$head->{TEXT}}, @result) {
|
|
print $fh $_;
|
|
}
|
|
if (!close $fh) {
|
|
for (@{$head->{TEXT}}, @result) {
|
|
print STDERR $_;
|
|
}
|
|
}
|
|
refresh();
|
|
}
|
|
|
|
print "\n";
|
|
}
|
|
|
|
sub diff_cmd {
|
|
my @mods = list_modified('index-only');
|
|
@mods = grep { !($_->{BINARY}) } @mods;
|
|
return if (!@mods);
|
|
my (@them) = list_and_choose({ PROMPT => 'Review diff',
|
|
IMMEDIATE => 1,
|
|
HEADER => $status_head, },
|
|
@mods);
|
|
return if (!@them);
|
|
system(qw(git diff-index -p --cached HEAD --),
|
|
map { $_->{VALUE} } @them);
|
|
}
|
|
|
|
sub quit_cmd {
|
|
print "Bye.\n";
|
|
exit(0);
|
|
}
|
|
|
|
sub help_cmd {
|
|
print <<\EOF ;
|
|
status - show paths with changes
|
|
update - add working tree state to the staged set of changes
|
|
revert - revert staged set of changes back to the HEAD version
|
|
patch - pick hunks and update selectively
|
|
diff - view diff between HEAD and index
|
|
add untracked - add contents of untracked files to the staged set of changes
|
|
EOF
|
|
}
|
|
|
|
sub main_loop {
|
|
my @cmd = ([ 'status', \&status_cmd, ],
|
|
[ 'update', \&update_cmd, ],
|
|
[ 'revert', \&revert_cmd, ],
|
|
[ 'add untracked', \&add_untracked_cmd, ],
|
|
[ 'patch', \&patch_update_cmd, ],
|
|
[ 'diff', \&diff_cmd, ],
|
|
[ 'quit', \&quit_cmd, ],
|
|
[ 'help', \&help_cmd, ],
|
|
);
|
|
while (1) {
|
|
my ($it) = list_and_choose({ PROMPT => 'What now',
|
|
SINGLETON => 1,
|
|
LIST_FLAT => 4,
|
|
HEADER => '*** Commands ***',
|
|
IMMEDIATE => 1 }, @cmd);
|
|
if ($it) {
|
|
eval {
|
|
$it->[1]->();
|
|
};
|
|
if ($@) {
|
|
print "$@";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
my @z;
|
|
|
|
refresh();
|
|
status_cmd();
|
|
main_loop();
|