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git/git-add--interactive.perl
Jeff King ca7246864b add--interactive: allow user to choose mode update
When using the 'p'atch command, instead of just throwing out any mode
change, present it to the user in the same way that we show hunks.

This way, the mode change can be staged independently from the changes
to the contents.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-03-27 13:54:57 -07:00

1100 lines
23 KiB
Perl
Executable file

#!/usr/bin/perl -w
use strict;
use Git;
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 $diff_use_color = $repo->get_colorbool('color.diff');
my ($fraginfo_color) =
$diff_use_color ? (
$repo->get_color('color.diff.frag', 'cyan'),
) : ();
my $normal_color = $repo->get_color("", "reset");
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 $patch_mode;
sub run_cmd_pipe {
if ($^O eq 'MSWin32') {
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);
sub refresh {
my $fh;
open $fh, 'git update-index --refresh |'
or die;
while (<$fh>) {
;# ignore 'needs update'
}
close $fh;
}
sub list_untracked {
map {
chomp $_;
$_;
}
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 $_; $_;
} run_cmd_pipe(qw(git ls-files --exclude-standard --), @ARGV);
return if (!@tracked);
}
my $reference = is_initial_commit() ? get_empty_tree() : 'HEAD';
for (run_cmd_pipe(qw(git diff-index --cached
--numstat --summary), $reference,
'--', @tracked)) {
if (($add, $del, $file) =
/^([-\d]+) ([-\d]+) (.*)/) {
my ($change, $bin);
if ($add eq '-' && $del eq '-') {
$change = 'binary';
$bin = 1;
}
else {
$change = "+$add/-$del";
}
$data{$file} = {
INDEX => $change,
BINARY => $bin,
FILE => 'nothing',
}
}
elsif (($adddel, $file) =
/^ (create|delete) mode [0-7]+ (.*)$/) {
$data{$file}{INDEX_ADDDEL} = $adddel;
}
}
for (run_cmd_pipe(qw(git diff-files --numstat --summary --), @tracked)) {
if (($add, $del, $file) =
/^([-\d]+) ([-\d]+) (.*)/) {
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, $file) =
/^ (create|delete) mode [0-7]+ (.*)$/) {
$data{$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{$letter}};
}
if ($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$remainder";
}
sub list_and_choose {
my ($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/^-//) {
$choose = 0;
}
# A range can be specified like 5-7
if ($choice =~ /^(\d+)-(\d+)$/) {
($bottom, $top) = ($1, $2);
}
elsif ($choice =~ /^\d+$/) {
$bottom = $top = $choice;
}
elsif ($choice eq '*') {
$bottom = 1;
$top = 1 + @stuff;
}
else {
$bottom = $top = find_unique($choice, @stuff);
if (!defined $bottom) {
print "Huh ($choice)?\n";
next TOPLOOP;
}
}
if ($opts->{SINGLETON} && $bottom != $top) {
print "Huh ($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: $_->{VALUE} is untracked now.\n";
}
}
}
refresh();
say_n_paths('reverted', @update);
}
print "\n";
}
sub add_untracked_cmd {
my @add = list_and_choose({ PROMPT => 'Add untracked' },
list_untracked());
if (@add) {
system(qw(git update-index --add --), @add);
say_n_paths('added', @add);
}
print "\n";
}
sub parse_diff {
my ($path) = @_;
my @diff = run_cmd_pipe(qw(git diff-files -p --), $path);
my @colored = ();
if ($diff_use_color) {
@colored = run_cmd_pipe(qw(git diff-files -p --color --), $path);
}
my (@hunk) = { TEXT => [], DISPLAY => [] };
for (my $i = 0; $i < @diff; $i++) {
if ($diff[$i] =~ /^@@ /) {
push @hunk, { TEXT => [], DISPLAY => [] };
}
push @{$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 => [] };
my $mode = { TEXT => [], DISPLAY => [] };
for (my $i = 0; $i < @{$src->{TEXT}}; $i++) {
my $dest = $src->{TEXT}->[$i] =~ /^(old|new) mode (\d+)$/ ?
$mode : $head;
push @{$dest->{TEXT}}, $src->{TEXT}->[$i];
push @{$dest->{DISPLAY}}, $src->{DISPLAY}->[$i];
}
return ($head, $mode);
}
sub hunk_splittable {
my ($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 => [],
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);
for (grep { $_->{USE} } @in) {
my $text = $_->{TEXT};
my ($o_ofs) = parse_hunk_header($text->[0]);
if (defined $last_o_ctx &&
$o_ofs <= $last_o_ctx) {
merge_hunk($out[-1], $_);
}
else {
push @out, $_;
}
$last_o_ctx = find_last_o_ctx($out[-1]);
}
return @out;
}
sub help_patch_cmd {
print colored $help_color, <<\EOF ;
y - stage this hunk
n - do not stage this hunk
a - stage this and all the remaining hunks in the file
d - do not stage this hunk nor any of the remaining hunks in the file
j - leave this hunk undecided, see next undecided hunk
J - leave this hunk undecided, see next hunk
k - leave this hunk undecided, see previous undecided hunk
K - leave this hunk undecided, see previous hunk
s - split the current hunk into smaller hunks
? - print help
EOF
}
sub patch_update_cmd {
my @mods = grep { !($_->{BINARY}) } list_modified('file-only');
my @them;
if (!@mods) {
print STDERR "No changes.\n";
return 0;
}
if ($patch_mode) {
@them = @mods;
}
else {
@them = list_and_choose({ PROMPT => 'Patch update',
HEADER => $status_head, },
@mods);
}
for (@them) {
patch_update_file($_->{VALUE});
}
}
sub patch_update_file {
my ($ix, $num);
my $path = shift;
my ($head, @hunk) = parse_diff($path);
($head, my $mode) = parse_diff_header($head);
for (@{$head->{DISPLAY}}) {
print;
}
if (@{$mode->{TEXT}}) {
while (1) {
print @{$mode->{DISPLAY}};
print colored $prompt_color,
"Stage mode change [y/n/a/d/?]? ";
my $line = <STDIN>;
if ($line =~ /^y/i) {
$mode->{USE} = 1;
last;
}
elsif ($line =~ /^n/i) {
$mode->{USE} = 0;
last;
}
elsif ($line =~ /^a/i) {
$_->{USE} = 1 foreach ($mode, @hunk);
last;
}
elsif ($line =~ /^d/i) {
$_->{USE} = 0 foreach ($mode, @hunk);
last;
}
else {
help_patch_cmd('');
next;
}
}
}
$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]{DISPLAY}}) {
print;
}
print colored $prompt_color, "Stage this hunk [y/n/a/d$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}, $hunk[$ix]{DISPLAY});
if (1 < @split) {
print colored $header_color, "Split into ",
scalar(@split), " hunks.\n";
}
splice (@hunk, $ix, 1, @split);
$num = scalar @hunk;
next;
}
else {
help_patch_cmd($other);
next;
}
# soft increment
while (1) {
$ix++;
last if ($ix >= $num ||
!defined $hunk[$ix]{USE});
}
}
}
@hunk = coalesce_overlapping_hunks(@hunk);
my $n_lofs = 0;
my @result = ();
if ($mode->{USE}) {
push @result, @{$mode->{TEXT}};
}
for (@hunk) {
my $text = $_->{TEXT};
my ($o_ofs, $o_cnt, $n_ofs, $n_cnt) =
parse_hunk_header($text->[0]);
if (!$_->{USE}) {
# We would have added ($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" .
(($o_cnt != 1)
? ",$o_cnt" : '') .
" +$n_ofs" .
(($n_cnt != 1)
? ",$n_cnt" : '') .
" @@\n");
}
for (@$text) {
push @result, $_;
}
}
}
if (@result) {
my $fh;
open $fh, '| git apply --cached';
for (@{$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);
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 eq "--patch") {
$patch_mode = 1;
$arg = shift @ARGV or die "missing --";
die "invalid argument $arg, expecting --"
unless $arg eq "--";
}
elsif ($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();
}