#!/usr/bin/perl -w
use strict;
+use Git;
+
+# Prompt colors:
+my ($prompt_color, $header_color, $help_color, $normal_color);
+# Diff colors:
+my ($new_color, $old_color, $fraginfo_color, $metainfo_color, $whitespace_color);
+
+my ($use_color, $diff_use_color);
+my $repo = Git->repository();
+
+$use_color = $repo->get_colorbool('color.interactive');
+
+if ($use_color) {
+ # Set interactive colors:
+
+ # Grab the 3 main colors in git color string format, with sane
+ # (visible) defaults:
+ $prompt_color = $repo->get_color("color.interactive.prompt", "bold blue");
+ $header_color = $repo->get_color("color.interactive.header", "bold");
+ $help_color = $repo->get_color("color.interactive.help", "red bold");
+ $normal_color = $repo->get_color("", "reset");
+
+ # Do we also set diff colors?
+ $diff_use_color = $repo->get_colorbool('color.diff');
+ if ($diff_use_color) {
+ $new_color = $repo->get_color("color.diff.new", "green");
+ $old_color = $repo->get_color("color.diff.old", "red");
+ $fraginfo_color = $repo->get_color("color.diff.frag", "cyan");
+ $metainfo_color = $repo->get_color("color.diff.meta", "bold");
+ $whitespace_color = $repo->get_color("color.diff.whitespace", "normal red");
+ }
+}
+
+sub colored {
+ my $color = shift;
+ my $string = join("", @_);
+
+ if ($use_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 {
- my $fh = undef;
- open($fh, '-|', @_) or die;
- return <$fh>;
+ if ($^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));
sub refresh {
my $fh;
- open $fh, '-|', qw(git update-index --refresh)
+ open $fh, 'git update-index --refresh |'
or die;
while (<$fh>) {
;# ignore 'needs update'
chomp $_;
$_;
}
- run_cmd_pipe(qw(git ls-files --others
- --exclude-per-directory=.gitignore),
- "--exclude-from=$GIT_DIR/info/exclude",
- '--', @_);
+ 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');
# Returns list of hashes, contents of each of which are:
-# PRINT: print message
# VALUE: pathname
# BINARY: is a binary path
# INDEX: is index different from HEAD?
my ($only) = @_;
my (%data, @return);
my ($add, $del, $adddel, $file);
+ my @tracked = ();
+
+ if (@ARGV) {
+ @tracked = map {
+ chomp $_; $_;
+ } run_cmd_pipe(qw(git ls-files --exclude-standard --), @ARGV);
+ return if (!@tracked);
+ }
for (run_cmd_pipe(qw(git diff-index --cached
- --numstat --summary HEAD))) {
+ --numstat --summary HEAD --), @tracked)) {
if (($add, $del, $file) =
/^([-\d]+) ([-\d]+) (.*)/) {
my ($change, $bin);
}
}
- for (run_cmd_pipe(qw(git diff-files --numstat --summary))) {
+ for (run_cmd_pipe(qw(git diff-files --numstat --summary --), @tracked)) {
if (($add, $del, $file) =
/^([-\d]+) ([-\d]+) (.*)/) {
if (!exists $data{$file}) {
}
push @return, +{
VALUE => $_,
- PRINT => (sprintf $status_fmt,
- $it->{INDEX}, $it->{FILE}, $_),
%$it,
};
}
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 (!$use_color) {
+ return "[$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 $opts->{LIST_ONLY};
TOPLOOP:
while (1) {
if (!$opts->{LIST_FLAT}) {
print " ";
}
- print "$opts->{HEADER}\n";
+ print colored $header_color, "$opts->{HEADER}\n";
}
for ($i = 0; $i < @stuff; $i++) {
my $chosen = $chosen[$i] ? '*' : ' ';
my $print = $stuff[$i];
- if (ref $print) {
- if ((ref $print) eq 'ARRAY') {
- $print = $print->[0];
- }
- else {
- $print = $print->{PRINT};
- }
+ 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}) &&
return if ($opts->{LIST_ONLY});
- print $opts->{PROMPT};
+ print colored $prompt_color, $opts->{PROMPT};
if ($opts->{SINGLETON}) {
print "> ";
}
print ">> ";
}
my $line = <STDIN>;
- last if (!$line);
+ if (!$line) {
+ print "\n";
+ $opts->{ON_EOF}->() if $opts->{ON_EOF};
+ last;
+ }
chomp $line;
- my $donesomething = 0;
+ 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, $top);
next TOPLOOP;
}
for ($i = $bottom-1; $i <= $top-1; $i++) {
- next if (@stuff <= $i);
+ next if (@stuff <= $i || $i < 0);
$chosen[$i] = $choose;
- $donesomething++;
}
}
- last if (!$donesomething || $opts->{IMMEDIATE});
+ last if ($opts->{IMMEDIATE} || $line eq '*');
}
for ($i = 0; $i < @stuff; $i++) {
if ($chosen[$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());
my @lines = run_cmd_pipe(qw(git ls-tree HEAD --),
map { $_->{VALUE} } @update);
my $fh;
- open $fh, '|-', qw(git update-index --index-info)
+ open $fh, '| git update-index --index-info'
or die;
for (@lines) {
print $fh $_;
sub parse_diff {
my ($path) = @_;
my @diff = run_cmd_pipe(qw(git diff-files -p --), $path);
- my (@hunk) = { TEXT => [] };
+ my @colored = ();
+ if ($diff_use_color) {
+ @colored = run_cmd_pipe(qw(git diff-files -p --color --), $path);
+ }
+ my (@hunk) = { TEXT => [], DISPLAY => [] };
- for (@diff) {
- if (/^@@ /) {
- push @hunk, { TEXT => [] };
+ for (my $i = 0; $i < @diff; $i++) {
+ if ($diff[$i] =~ /^@@ /) {
+ push @hunk, { TEXT => [], DISPLAY => [] };
}
- push @{$hunk[-1]{TEXT}}, $_;
+ push @{$hunk[-1]{TEXT}}, $diff[$i];
+ push @{$hunk[-1]{DISPLAY}},
+ ($diff_use_color ? $colored[$i] : $diff[$i]);
}
return @hunk;
}
sub parse_hunk_header {
my ($line) = @_;
my ($o_ofs, $o_cnt, $n_ofs, $n_cnt) =
- $line =~ /^@@ -(\d+)(?:,(\d+)) \+(\d+)(?:,(\d+)) @@/;
+ $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) = @_;
+ 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, $o_cnt, $n_ofs, $n_cnt) = parse_hunk_header($text->[0]);
+ my ($o_ofs, undef, $n_ofs) = parse_hunk_header($text->[0]);
my $hunk_start = 1;
- my $next_hunk_start;
OUTER:
while (1) {
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) {
$next_hunk_start = $i;
}
push @{$this->{TEXT}}, $line;
+ push @{$this->{DISPLAY}}, $display;
$this->{OCNT}++;
$this->{NCNT}++;
if (defined $next_hunk_start) {
redo OUTER;
}
push @{$this->{TEXT}}, $line;
+ push @{$this->{DISPLAY}}, $display;
$this->{ADDDEL}++;
if ($line =~ /^-/) {
$this->{OCNT}++;
for my $hunk (@split) {
$o_ofs = $hunk->{OLD};
$n_ofs = $hunk->{NEW};
- $o_cnt = $hunk->{OCNT};
- $n_cnt = $hunk->{NCNT};
+ 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 map { $_->{TEXT} } @split;
+ return @split;
}
sub find_last_o_ctx {
my ($it) = @_;
my $text = $it->{TEXT};
- my ($o_ofs, $o_cnt, $n_ofs, $n_cnt) = parse_hunk_header($text->[0]);
+ my ($o_ofs, $o_cnt) = parse_hunk_header($text->[0]);
my $i = @{$text};
my $last_o_ctx = $o_ofs + $o_cnt;
while (0 < --$i) {
for (grep { $_->{USE} } @in) {
my $text = $_->{TEXT};
- my ($o_ofs, $o_cnt, $n_ofs, $n_cnt) =
- parse_hunk_header($text->[0]);
+ my ($o_ofs) = parse_hunk_header($text->[0]);
if (defined $last_o_ctx &&
$o_ofs <= $last_o_ctx) {
merge_hunk($out[-1], $_);
}
sub help_patch_cmd {
- print <<\EOF ;
+ print colored $help_color, <<\EOF ;
y - stage this hunk
n - do not stage this hunk
-a - stage this and all the remaining hunks
-d - do not stage this hunk nor any of the remaining hunks
+a - stage this and all the remaining hunks in the file
+d - do not stage this hunk nor any of the remaining hunks in the file
j - leave this hunk undecided, see next undecided hunk
J - leave this hunk undecided, see next hunk
k - leave this hunk undecided, see previous undecided hunk
K - leave this hunk undecided, see previous hunk
s - split the current hunk into smaller hunks
+? - print help
EOF
}
sub patch_update_cmd {
- my @mods = list_modified('file-only');
- @mods = grep { !($_->{BINARY}) } @mods;
- return if (!@mods);
+ my @mods = grep { !($_->{BINARY}) } list_modified('file-only');
+ my @them;
- my ($it) = list_and_choose({ PROMPT => 'Patch update',
- SINGLETON => 1,
- IMMEDIATE => 1,
- HEADER => $status_head, },
- @mods);
- return if (!$it);
+ 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 = $it->{VALUE};
+ my $path = shift;
my ($head, @hunk) = parse_diff($path);
- for (@{$head->{TEXT}}) {
+ for (@{$head->{DISPLAY}}) {
print;
}
$num = scalar @hunk;
if (hunk_splittable($hunk[$ix]{TEXT})) {
$other .= '/s';
}
- for (@{$hunk[$ix]{TEXT}}) {
+ for (@{$hunk[$ix]{DISPLAY}}) {
print;
}
- print "Stage this hunk [y/n/a/d$other/?]? ";
+ print colored $prompt_color, "Stage this hunk [y/n/a/d$other/?]? ";
my $line = <STDIN>;
if ($line) {
if ($line =~ /^y/i) {
next;
}
elsif ($other =~ /s/ && $line =~ /^s/) {
- my @split = split_hunk($hunk[$ix]{TEXT});
+ my @split = split_hunk($hunk[$ix]{TEXT}, $hunk[$ix]{DISPLAY});
if (1 < @split) {
- print "Split into ",
+ print colored $header_color, "Split into ",
scalar(@split), " hunks.\n";
}
- splice(@hunk, $ix, 1,
- map { +{ TEXT => $_, USE => undef } }
- @split);
+ splice (@hunk, $ix, 1, @split);
$num = scalar @hunk;
next;
}
@hunk = coalesce_overlapping_hunks(@hunk);
- my ($o_lofs, $n_lofs) = (0, 0);
+ my $n_lofs = 0;
my @result = ();
for (@hunk) {
my $text = $_->{TEXT};
parse_hunk_header($text->[0]);
if (!$_->{USE}) {
- if (!defined $o_cnt) { $o_cnt = 1; }
- if (!defined $n_cnt) { $n_cnt = 1; }
-
# We would have added ($n_cnt - $o_cnt) lines
# to the postimage if we were to use this hunk,
# but we didn't. So the line number that the next
if ($n_lofs) {
$n_ofs += $n_lofs;
$text->[0] = ("@@ -$o_ofs" .
- ((defined $o_cnt)
+ (($o_cnt != 1)
? ",$o_cnt" : '') .
" +$n_ofs" .
- ((defined $n_cnt)
+ (($n_cnt != 1)
? ",$n_cnt" : '') .
" @@\n");
}
if (@result) {
my $fh;
- open $fh, '|-', qw(git apply --cached);
+ open $fh, '| git apply --cached';
for (@{$head->{TEXT}}, @result) {
print $fh $_;
}
HEADER => $status_head, },
@mods);
return if (!@them);
- system(qw(git diff-index -p --cached HEAD --),
- map { $_->{VALUE} } @them);
+ system(qw(git diff -p --cached HEAD --), map { $_->{VALUE} } @them);
}
sub quit_cmd {
}
sub help_cmd {
- print <<\EOF ;
+ 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
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 $arg, expecting --";
+ }
+}
+
sub main_loop {
my @cmd = ([ 'status', \&status_cmd, ],
[ 'update', \&update_cmd, ],
SINGLETON => 1,
LIST_FLAT => 4,
HEADER => '*** Commands ***',
+ ON_EOF => \&quit_cmd,
IMMEDIATE => 1 }, @cmd);
if ($it) {
eval {
}
}
-my @z;
-
+process_args();
refresh();
-status_cmd();
-main_loop();
+if ($patch_mode) {
+ patch_update_cmd();
+}
+else {
+ status_cmd();
+ main_loop();
+}