[catagits/Gitalist.git] / lib / Gitalist / Git / Project.pm

use MooseX::Declare;

class Gitalist::Git::Project {
    # FIXME, use Types::Path::Class and coerce
    use MooseX::Types::Common::String qw/NonEmptySimpleStr/;
    use MooseX::Types::Moose qw/Str Maybe Bool HashRef/;
    use DateTime;
    use MooseX::Types::Path::Class qw/Dir/;
    use List::MoreUtils qw/any zip/;
    use Gitalist::Git::Util;
    use aliased 'Gitalist::Git::Object';

    our $SHA1RE = qr/[0-9a-fA-F]{40}/;

    has name => ( isa => NonEmptySimpleStr,
                  is => 'ro', required => 1 );
    has path => ( isa => Dir,
                  is => 'ro', required => 1);

    has description => ( isa => Str,
                         is => 'ro',
                         lazy_build => 1,
                     );
    has owner => ( isa => NonEmptySimpleStr,
                   is => 'ro',
                   lazy_build => 1,
               );
    has last_change => ( isa => Maybe['DateTime'],
                         is => 'ro',
                         lazy_build => 1,
                     );
    has _util => ( isa => 'Gitalist::Git::Util',
                   is => 'ro',
                   lazy_build => 1,
                   handles => [ 'run_cmd', 'get_gpp_object' ],
               );

    has project_dir => ( isa => Dir,
        is => 'ro',
        lazy => 1,
        default => sub {
            my $self = shift;
            $self->is_bare
                ? $self->path
                : $self->path->subdir('.git')
        },
    );
    has is_bare => (
        isa => Bool,
        is => 'ro',
        lazy => 1,
        default => sub {
            my $self = shift;
            -f $self->path->file('.git', 'HEAD')
                ? 0
                : -f $self->path->file('HEAD')
                    ? 1
                    : confess("Cannot find " . $self->path . "/.git/HEAD or "
                        . $self->path . "/HEAD");
        },
    );

    method BUILD {
        $self->$_() for qw/_util last_change owner description/; # Ensure to build early.
    }

    method _project_dir {
        -f $self->{path}->file('.git', 'HEAD')
            ? $self->{path}->subdir('.git')
            : $self->{path};
    }

    method _build__util {
        Gitalist::Git::Util->new(
            project => $self,
        );
    }

    method _build_description {
        my $description = "";
        eval {
            $description = $self->project_dir->file('description')->slurp;
            chomp $description;
        };
        return $description;
    }

    method _build_owner {
        my ($gecos, $name) = (getpwuid $self->project_dir->stat->uid)[6,0];
        $gecos =~ s/,+$//;
        return length($gecos) ? $gecos : $name;
    }

    method _build_last_change {
        my $last_change;
        my $output = $self->run_cmd(
            qw{ for-each-ref --format=%(committer)
                --sort=-committerdate --count=1 refs/heads
          });
        if (my ($epoch, $tz) = $output =~ /\s(\d+)\s+([+-]\d+)$/) {
            my $dt = DateTime->from_epoch(epoch => $epoch);
            $dt->set_time_zone($tz);
            $last_change = $dt;
        }
        return $last_change;
    }

    method heads {
        my $cmdout = $self->run_cmd(qw/for-each-ref --sort=-committerdate /, '--format=%(objectname)%00%(refname)%00%(committer)', 'refs/heads');
        my @output = $cmdout ? split(/\n/, $cmdout) : ();
        my @ret;
        for my $line (@output) {
            my ($rev, $head, $commiter) = split /\0/, $line, 3;
            $head =~ s!^refs/heads/!!;

            push @ret, { sha1 => $rev, name => $head };

            #FIXME: That isn't the time I'm looking for..
            if (my ($epoch, $tz) = $line =~ /\s(\d+)\s+([+-]\d+)$/) {
                my $dt = DateTime->from_epoch(epoch => $epoch);
                $dt->set_time_zone($tz);
                $ret[-1]->{last_change} = $dt;
            }
        }

        return @ret;
    }

    method references {
	return $self->{references}
		if $self->{references};

	# 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
	# c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
	my $cmdout = $self->run_cmd(qw(show-ref --dereference))
		or return;
        my @reflist = $cmdout ? split(/\n/, $cmdout) : ();
	my %refs;
	for(@reflist) {
		push @{$refs{$1}}, $2
			if m!^($SHA1RE)\srefs/(.*)$!;
	}

	return $self->{references} = \%refs;
}

    method valid_rev (Str $rev) {
        return ($rev =~ /^($SHA1RE)$/);
    }


=head2 head_hash

Find the hash of a given head (defaults to HEAD).

=cut

    method head_hash (Str $head?) {
        my $output = $self->run_cmd(qw/rev-parse --verify/, $head || 'HEAD' );
        return unless defined $output;

        my($sha1) = $output =~ /^($SHA1RE)$/;
        return $sha1;
    }

=head2 list_tree

Return an array of contents for a given tree.
The tree is specified by sha1, and defaults to HEAD.
The keys for each item will be:

	mode
	type
	object
	file

=cut

    method list_tree (Str $sha1?) {
        $sha1 ||= $self->head_hash;

        my $output = $self->run_cmd(qw/ls-tree -z/, $sha1);
        return unless defined $output;

        my @ret;
        for my $line (split /\0/, $output) {
            my ($mode, $type, $object, $file) = split /\s+/, $line, 4;
            push @ret, Object->new( mode => oct $mode,
                                    type => $type,
                                    sha1 => $object,
                                    file => $file,
                                    project => $self,
                                  );
        }
        return @ret;
    }

    method get_object (NonEmptySimpleStr $sha1) {
        unless ( $self->valid_rev($sha1) ) {
            $sha1 = $self->head_hash($sha1);
        }
        return Object->new(
            project => $self,
            sha1 => $sha1,
        );
    }

    # Should be in ::Object
    method get_object_mode_string (Gitalist::Git::Object $object) {
        return unless $object && $object->{mode};
        return $object->{modestr};
    }

    method get_object_type ($object) {
        chomp(my $output = $self->run_cmd(qw/cat-file -t/, $object));
        return unless $output;

        return $output;
    }

    method cat_file ($object) {
        my $type = $self->get_object_type($object);
        die "object `$object' is not a file\n"
            if (!defined $type || $type ne 'blob');

        my $output = $self->run_cmd(qw/cat-file -p/, $object);
        return unless $output;

        return $output;
    }

    method hash_by_path ($base, $path?, $type?) {
        $path ||= '';
        $path =~ s{/+$}();

        my $output = $self->run_cmd('ls-tree', $base, '--', $path)
            or return;
        my($line) = $output ? split(/\n/, $output) : ();

        #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa	panic.c'
        $line =~ m/^([0-9]+) (.+) ($SHA1RE)\t/;
        return defined $type && $type ne $2
            ? ()
                : $3;
    }

    method list_revs ( NonEmptySimpleStr :$sha1!,
                       Int :$count?,
                       Int :$skip?,
                       HashRef :$search?,
                       NonEmptySimpleStr :$file?
                   ) {
        $sha1 = $self->head_hash($sha1)
            if !$sha1 || $sha1 !~ $SHA1RE;

	my @search_opts;
        if($search) {
            $search->{type} = 'grep'
                if $search->{type} eq 'commit';
            @search_opts = (
                # This seems a little fragile ...
                qq[--$search->{type}=$search->{text}],
                '--regexp-ignore-case',
                $search->{regexp} ? '--extended-regexp' : '--fixed-strings'
            );
        }

        my $output = $self->run_cmd(
            'rev-list',
            '--header',
            (defined $count ? "--max-count=$count" : ()),
            (defined $skip ? "--skip=$skip"       : ()),
            @search_opts,
            $sha1,
            '--',
            ($file ? $file : ()),
        );
        return unless $output;

        my @revs = $self->parse_rev_list($output);

        return @revs;
    }

    method parse_rev_list ($output) {
        return
            map  $self->get_gpp_object($_),
                grep $self->valid_rev($_),
                    map  split(/\n/, $_, 6), split /\0/, $output;
    }

    # XXX Ideally this would return a wee object instead of ad hoc structures.
    method diff ( Gitalist::Git::Object :$commit,
                  Bool :$patch?,
                  Maybe[NonEmptySimpleStr] :$parent?,
                  NonEmptySimpleStr :$file? ) {
        # Use parent if specifed, else take the parent from the commit
        # if there is only one, otherwise it was a merge commit.
        $parent = $parent
            ? $parent
            : $commit->parents <= 1
            ? $commit->parent_sha1
            : '-c';
        my @etc = (
            ( $file  ? ('--', $file) : () ),
        );

        my @out = $self->raw_diff(
            \(( $patch ? '--patch-with-raw' : () ),
            $parent, $commit->sha1, @etc )
        );

        # XXX Yes, there is much wrongness having parse_diff_tree be destructive.
        my @difftree = $self->parse_diff_tree(\@out);

        return \@difftree
            unless $patch;

        # The blank line between the tree and the patch.
        shift @out;

        # XXX And no I'm not happy about having diff return tree + patch.
        return \@difftree, [$self->parse_diff(@out)];
    }

    method parse_diff (@diff) {
        my @ret;
        for (@diff) {
            # This regex is a little pathological.
            if(m{^diff --git (a/(.*?)) (b/\2)}) {
                push @ret, {
                    head => $_,
                    a    => $1,
                    b    => $3,
                    file => $2,
                    diff => '',
                };
                next;
            }

            if(/^index (\w+)\.\.(\w+) (\d+)$/) {
                @{$ret[-1]}{qw(index src dst mode)} = ($_, $1, $2, $3);
                next
            }

            # XXX Somewhat hacky. Ahem.
            $ret[@ret ? -1 : 0]{diff} .= "$_\n";
        }

        return @ret;
    }

    # gitweb uses the following sort of command for diffing merges:
# /home/dbrook/apps/bin/git --git-dir=/home/dbrook/dev/app/.git diff-tree -r -M --no-commit-id --patch-with-raw --full-index --cc 316cf158df3f6207afbae7270bcc5ba0 --
# and for regular diffs
# /home/dbrook/apps/bin/git --git-dir=/home/dbrook/dev/app/.git diff-tree -r -M --no-commit-id --patch-with-raw --full-index 2e3454ca0749641b42f063730b0090e1 316cf158df3f6207afbae7270bcc5ba0 --

    method raw_diff (@args) {
        my $cmdout = $self->run_cmd(
            qw(diff-tree -r -M --no-commit-id --full-index),
            @args
        );
        return $cmdout ? split(/\n/, $cmdout) : ();
    }

    method parse_diff_tree ($diff) {
        my @keys = qw(modesrc modedst sha1src sha1dst status src dst);
        my @ret;
        while (@$diff and $diff->[0] =~ /^:\d+/) {
            my $line = shift @$diff;
            # see. man git-diff-tree for more info
            # mode src, mode dst, sha1 src, sha1 dst, status, src[, dst]
            my @vals = $line =~ /^:(\d+) (\d+) ($SHA1RE) ($SHA1RE) ([ACDMRTUX]\d*)\t([^\t]+)(?:\t([^\n]+))?$/;
            my %line = zip @keys, @vals;
            # Some convenience keys
            $line{file}   = $line{src};
            $line{sha1}   = $line{sha1dst};
            $line{is_new} = $line{sha1src} =~ /^0+$/
		if $line{sha1src};
            @line{qw/status sim/} = $line{status} =~ /(R)(\d+)/
                if $line{status} =~ /^R/;
            push @ret, \%line;
        }

        return @ret;
    }

    method reflog (@logargs) {
        my @entries
            =  $self->run_cmd(qw(log -g), @logargs)
                =~ /(^commit.+?(?:(?=^commit)|(?=\z)))/msg;

=pod
  commit 02526fc15beddf2c64798a947fecdd8d11bf993d
  Reflog: HEAD@{14} (The Git Server <git@git.dev.venda.com>)
  Reflog message: push
  Author: Foo Barsby <fbarsby@example.com>
  Date:   Thu Sep 17 12:26:05 2009 +0100

      Merge branch 'abc123'

=cut

        return map {
            # XXX Stuff like this makes me want to switch to Git::PurePerl
            my($sha1, $type, $author, $date)
                = m{
                       ^ commit \s+ ($SHA1RE)$
                       .*?
                       Reflog[ ]message: \s+ (.+?)$ \s+
                     Author: \s+ ([^<]+) <.*?$ \s+
                   Date: \s+ (.+?)$
               }xms;

            pos($_) = index($_, $date) + length $date;

            # Yeah, I just did that.
            my($msg) = /\G\s+(\S.*)/sg;
            {
                hash    => $sha1,
                type    => $type,
                author  => $author,

                # XXX Add DateTime goodness.
                date    => $date,
                message => $msg,
            }
            ;
        } @entries;
    }

    # Compatibility

=head2 info

Returns a hash containing properties of this project. The keys will
be:

	name
	description (empty if .git/description is empty/unnamed)
	owner
	last_change

=cut

    method info {
        return {
            name => $self->name,
            description => $self->description,
            owner => $self->owner,
            last_change => $self->last_change,
        };
    };

} # end class
Commit	Line	Data
56b6dbe6	1	use MooseX::Declare;
	2
	3	class Gitalist::Git::Project {
	4	# FIXME, use Types::Path::Class and coerce
	5	use MooseX::Types::Common::String qw/NonEmptySimpleStr/;
4111e151	6	use MooseX::Types::Moose qw/Str Maybe Bool HashRef/;
56b6dbe6	7	use DateTime;
84f31a44	8	use MooseX::Types::Path::Class qw/Dir/;
77edf882	9	use List::MoreUtils qw/any zip/;
941bb5a1	10	use Gitalist::Git::Util;
a8a8f8f9	11	use aliased 'Gitalist::Git::Object';
56b6dbe6	12
4baaeeef	13	our $SHA1RE = qr/[0-9a-fA-F]{40}/;
29debefd	14
56b6dbe6	15	has name => ( isa => NonEmptySimpleStr,
01ced85b	16	is => 'ro', required => 1 );
84f31a44	17	has path => ( isa => Dir,
01ced85b	18	is => 'ro', required => 1);
56b6dbe6	19
0617cbd0	20	has description => ( isa => Str,
56b6dbe6	21	is => 'ro',
	22	lazy_build => 1,
	23	);
	24	has owner => ( isa => NonEmptySimpleStr,
	25	is => 'ro',
	26	lazy_build => 1,
	27	);
0617cbd0	28	has last_change => ( isa => Maybe['DateTime'],
56b6dbe6	29	is => 'ro',
	30	lazy_build => 1,
	31	);
941bb5a1	32	has _util => ( isa => 'Gitalist::Git::Util',
	33	is => 'ro',
	34	lazy_build => 1,
4111e151	35	handles => [ 'run_cmd', 'get_gpp_object' ],
941bb5a1	36	);
56b6dbe6	37
84f31a44	38	has project_dir => ( isa => Dir,
	39	is => 'ro',
	40	lazy => 1,
	41	default => sub {
	42	my $self = shift;
	43	$self->is_bare
	44	? $self->path
	45	: $self->path->subdir('.git')
	46	},
	47	);
	48	has is_bare => (
	49	isa => Bool,
	50	is => 'ro',
	51	lazy => 1,
	52	default => sub {
	53	my $self = shift;
	54	-f $self->path->file('.git', 'HEAD')
	55	? 0
	56	: -f $self->path->file('HEAD')
	57	? 1
	58	: confess("Cannot find " . $self->path . "/.git/HEAD or "
	59	. $self->path . "/HEAD");
	60	},
	61	);
	62
01ced85b	63	method BUILD {
	64	$self->$_() for qw/_util last_change owner description/; # Ensure to build early.
	65	}
	66
8dbe8024	67	method _project_dir {
	68	-f $self->{path}->file('.git', 'HEAD')
	69	? $self->{path}->subdir('.git')
	70	: $self->{path};
	71	}
	72
941bb5a1	73	method _build__util {
255ee743	74	Gitalist::Git::Util->new(
84f31a44	75	project => $self,
941bb5a1	76	);
941bb5a1	77	}
29debefd	78
56b6dbe6	79	method _build_description {
4ce9e8a0	80	my $description = "";
d9a9b56b	81	eval {
84f31a44	82	$description = $self->project_dir->file('description')->slurp;
d9a9b56b	83	chomp $description;
d9a9b56b	84	};
56b6dbe6	85	return $description;
	86	}
	87
	88	method _build_owner {
84f31a44	89	my ($gecos, $name) = (getpwuid $self->project_dir->stat->uid)[6,0];
263e2578	90	$gecos =~ s/,+$//;
263e2578	91	return length($gecos) ? $gecos : $name;
56b6dbe6	92	}
29debefd	93
56b6dbe6	94	method _build_last_change {
	95	my $last_change;
	96	my $output = $self->run_cmd(
	97	qw{ for-each-ref --format=%(committer)
	98	--sort=-committerdate --count=1 refs/heads
	99	});
	100	if (my ($epoch, $tz) = $output =~ /\s(\d+)\s+([+-]\d+)$/) {
	101	my $dt = DateTime->from_epoch(epoch => $epoch);
	102	$dt->set_time_zone($tz);
	103	$last_change = $dt;
	104	}
	105	return $last_change;
	106	}
	107
8dbe8024	108	method heads {
	109	my $cmdout = $self->run_cmd(qw/for-each-ref --sort=-committerdate /, '--format=%(objectname)%00%(refname)%00%(committer)', 'refs/heads');
	110	my @output = $cmdout ? split(/\n/, $cmdout) : ();
	111	my @ret;
	112	for my $line (@output) {
	113	my ($rev, $head, $commiter) = split /\0/, $line, 3;
	114	$head =~ s!^refs/heads/!!;
	115
	116	push @ret, { sha1 => $rev, name => $head };
	117
	118	#FIXME: That isn't the time I'm looking for..
	119	if (my ($epoch, $tz) = $line =~ /\s(\d+)\s+([+-]\d+)$/) {
	120	my $dt = DateTime->from_epoch(epoch => $epoch);
	121	$dt->set_time_zone($tz);
	122	$ret[-1]->{last_change} = $dt;
	123	}
	124	}
	125
	126	return @ret;
	127	}
	128
4111e151	129	method references {
	130	return $self->{references}
	131	if $self->{references};
	132
	133	# 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
	134	# c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
	135	my $cmdout = $self->run_cmd(qw(show-ref --dereference))
	136	or return;
	137	my @reflist = $cmdout ? split(/\n/, $cmdout) : ();
	138	my %refs;
	139	for(@reflist) {
	140	push @{$refs{$1}}, $2
	141	if m!^($SHA1RE)\srefs/(.*)$!;
	142	}
	143
	144	return $self->{references} = \%refs;
	145	}
	146
	147	method valid_rev (Str $rev) {
	148	return ($rev =~ /^($SHA1RE)$/);
	149	}
	150
8dbe8024	151
4baaeeef	152	=head2 head_hash
	153
	154	Find the hash of a given head (defaults to HEAD).
	155
	156	=cut
	157
	158	method head_hash (Str $head?) {
	159	my $output = $self->run_cmd(qw/rev-parse --verify/, $head \|\| 'HEAD' );
	160	return unless defined $output;
	161
	162	my($sha1) = $output =~ /^($SHA1RE)$/;
	163	return $sha1;
	164	}
	165
a8a8f8f9	166	=head2 list_tree
	167
	168	Return an array of contents for a given tree.
	169	The tree is specified by sha1, and defaults to HEAD.
	170	The keys for each item will be:
	171
	172	mode
	173	type
	174	object
	175	file
	176
	177	=cut
	178
	179	method list_tree (Str $sha1?) {
	180	$sha1 \|\|= $self->head_hash;
	181
	182	my $output = $self->run_cmd(qw/ls-tree -z/, $sha1);
	183	return unless defined $output;
	184
	185	my @ret;
	186	for my $line (split /\0/, $output) {
	187	my ($mode, $type, $object, $file) = split /\s+/, $line, 4;
	188	push @ret, Object->new( mode => oct $mode,
	189	type => $type,
	190	sha1 => $object,
	191	file => $file,
50394a3e	192	project => $self,
a8a8f8f9	193	);
	194	}
	195	return @ret;
	196	}
	197
8bb7649b	198	method get_object (NonEmptySimpleStr $sha1) {
	199	unless ( $self->valid_rev($sha1) ) {
	200	$sha1 = $self->head_hash($sha1);
	201	}
77edf882	202	return Object->new(
54368e9d	203	project => $self,
	204	sha1 => $sha1,
	205	);
	206	}
8bb7649b	207
54368e9d	208	# Should be in ::Object
	209	method get_object_mode_string (Gitalist::Git::Object $object) {
	210	return unless $object && $object->{mode};
	211	return $object->{modestr};
	212	}
	213
	214	method get_object_type ($object) {
	215	chomp(my $output = $self->run_cmd(qw/cat-file -t/, $object));
	216	return unless $output;
	217
	218	return $output;
	219	}
	220
	221	method cat_file ($object) {
	222	my $type = $self->get_object_type($object);
	223	die "object `$object' is not a file\n"
	224	if (!defined $type \|\| $type ne 'blob');
	225
	226	my $output = $self->run_cmd(qw/cat-file -p/, $object);
	227	return unless $output;
	228
	229	return $output;
	230	}
	231
	232	method hash_by_path ($base, $path?, $type?) {
	233	$path \|\|= '';
	234	$path =~ s{/+$}();
	235
	236	my $output = $self->run_cmd('ls-tree', $base, '--', $path)
	237	or return;
	238	my($line) = $output ? split(/\n/, $output) : ();
	239
	240	#'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa panic.c'
	241	$line =~ m/^([0-9]+) (.+) ($SHA1RE)\t/;
	242	return defined $type && $type ne $2
	243	? ()
	244	: $3;
	245	}
	246
4111e151	247	method list_revs ( NonEmptySimpleStr :$sha1!,
	248	Int :$count?,
	249	Int :$skip?,
	250	HashRef :$search?,
	251	NonEmptySimpleStr :$file?
	252	) {
	253	$sha1 = $self->head_hash($sha1)
	254	if !$sha1 \|\| $sha1 !~ $SHA1RE;
	255
	256	my @search_opts;
	257	if($search) {
	258	$search->{type} = 'grep'
	259	if $search->{type} eq 'commit';
	260	@search_opts = (
	261	# This seems a little fragile ...
	262	qq[--$search->{type}=$search->{text}],
	263	'--regexp-ignore-case',
	264	$search->{regexp} ? '--extended-regexp' : '--fixed-strings'
	265	);
	266	}
	267
	268	my $output = $self->run_cmd(
	269	'rev-list',
	270	'--header',
	271	(defined $count ? "--max-count=$count" : ()),
	272	(defined $skip ? "--skip=$skip" : ()),
	273	@search_opts,
	274	$sha1,
	275	'--',
	276	($file ? $file : ()),
	277	);
	278	return unless $output;
	279
	280	my @revs = $self->parse_rev_list($output);
	281
	282	return @revs;
	283	}
	284
	285	method parse_rev_list ($output) {
	286	return
	287	map $self->get_gpp_object($_),
	288	grep $self->valid_rev($_),
	289	map split(/\n/, $_, 6), split /\0/, $output;
	290	}
54368e9d	291
77edf882	292	# XXX Ideally this would return a wee object instead of ad hoc structures.
	293	method diff ( Gitalist::Git::Object :$commit,
	294	Bool :$patch?,
fc948aee	295	Maybe[NonEmptySimpleStr] :$parent?,
77edf882	296	NonEmptySimpleStr :$file? ) {
	297	# Use parent if specifed, else take the parent from the commit
	298	# if there is only one, otherwise it was a merge commit.
	299	$parent = $parent
	300	? $parent
	301	: $commit->parents <= 1
	302	? $commit->parent_sha1
	303	: '-c';
	304	my @etc = (
	305	( $file ? ('--', $file) : () ),
	306	);
	307
	308	my @out = $self->raw_diff(
8bb7649b	309	\(( $patch ? '--patch-with-raw' : () ),
8bb7649b	310	$parent, $commit->sha1, @etc )
77edf882	311	);
	312
	313	# XXX Yes, there is much wrongness having parse_diff_tree be destructive.
	314	my @difftree = $self->parse_diff_tree(\@out);
	315
	316	return \@difftree
	317	unless $patch;
	318
	319	# The blank line between the tree and the patch.
	320	shift @out;
	321
	322	# XXX And no I'm not happy about having diff return tree + patch.
	323	return \@difftree, [$self->parse_diff(@out)];
	324	}
	325
	326	method parse_diff (@diff) {
	327	my @ret;
	328	for (@diff) {
	329	# This regex is a little pathological.
	330	if(m{^diff --git (a/(.*?)) (b/\2)}) {
	331	push @ret, {
	332	head => $_,
	333	a => $1,
	334	b => $3,
	335	file => $2,
	336	diff => '',
	337	};
	338	next;
	339	}
	340
	341	if(/^index (\w+)\.\.(\w+) (\d+)$/) {
	342	@{$ret[-1]}{qw(index src dst mode)} = ($_, $1, $2, $3);
	343	next
	344	}
	345
	346	# XXX Somewhat hacky. Ahem.
	347	$ret[@ret ? -1 : 0]{diff} .= "$_\n";
	348	}
	349
	350	return @ret;
	351	}
	352
	353	# gitweb uses the following sort of command for diffing merges:
	354	# /home/dbrook/apps/bin/git --git-dir=/home/dbrook/dev/app/.git diff-tree -r -M --no-commit-id --patch-with-raw --full-index --cc 316cf158df3f6207afbae7270bcc5ba0 --
	355	# and for regular diffs
	356	# /home/dbrook/apps/bin/git --git-dir=/home/dbrook/dev/app/.git diff-tree -r -M --no-commit-id --patch-with-raw --full-index 2e3454ca0749641b42f063730b0090e1 316cf158df3f6207afbae7270bcc5ba0 --
	357
	358	method raw_diff (@args) {
	359	my $cmdout = $self->run_cmd(
	360	qw(diff-tree -r -M --no-commit-id --full-index),
	361	@args
	362	);
	363	return $cmdout ? split(/\n/, $cmdout) : ();
	364	}
	365
	366	method parse_diff_tree ($diff) {
	367	my @keys = qw(modesrc modedst sha1src sha1dst status src dst);
	368	my @ret;
	369	while (@$diff and $diff->[0] =~ /^:\d+/) {
	370	my $line = shift @$diff;
	371	# see. man git-diff-tree for more info
	372	# mode src, mode dst, sha1 src, sha1 dst, status, src[, dst]
	373	my @vals = $line =~ /^:(\d+) (\d+) ($SHA1RE) ($SHA1RE) ([ACDMRTUX]\d*)\t([^\t]+)(?:\t([^\n]+))?$/;
	374	my %line = zip @keys, @vals;
375	# Some convenience keys
376	$line{file} = $line{src};
377	$line{sha1} = $line{sha1dst};
378	$line{is_new} = $line{sha1src} =~ /^0+$/
379	if $line{sha1src};
380	@line{qw/status sim/} = $line{status} =~ /(R)(\d+)/
381	if $line{status} =~ /^R/;
382	push @ret, \%line;
383	}
384
385	return @ret;
386	}
54368e9d	387
d8abdf1c	388	method reflog (@logargs) {
	389	my @entries
	390	= $self->run_cmd(qw(log -g), @logargs)
	391	=~ /(^commit.+?(?:(?=^commit)\|(?=\z)))/msg;
	392
	393	=pod
	394	commit 02526fc15beddf2c64798a947fecdd8d11bf993d
	395	Reflog: HEAD@{14} (The Git Server <git@git.dev.venda.com>)
	396	Reflog message: push
	397	Author: Foo Barsby <fbarsby@example.com>
	398	Date: Thu Sep 17 12:26:05 2009 +0100
	399
	400	Merge branch 'abc123'
	401
	402	=cut
	403
	404	return map {
	405	# XXX Stuff like this makes me want to switch to Git::PurePerl
	406	my($sha1, $type, $author, $date)
	407	= m{
	408	^ commit \s+ ($SHA1RE)$
	409	.*?
	410	Reflog[ ]message: \s+ (.+?)$ \s+
	411	Author: \s+ ([^<]+) <.*?$ \s+
	412	Date: \s+ (.+?)$
	413	}xms;
	414
	415	pos($_) = index($_, $date) + length $date;
	416
	417	# Yeah, I just did that.
	418	my($msg) = /\G\s+(\S.*)/sg;
	419	{
	420	hash => $sha1,
	421	type => $type,
	422	author => $author,
	423
	424	# XXX Add DateTime goodness.
	425	date => $date,
	426	message => $msg,
	427	}
	428	;
	429	} @entries;
	430	}
	431
56b6dbe6	432	# Compatibility
56b6dbe6	433
caba5c95	434	=head2 info
56b6dbe6	435
	436	Returns a hash containing properties of this project. The keys will
	437	be:
	438
	439	name
	440	description (empty if .git/description is empty/unnamed)
	441	owner
	442	last_change
	443
	444	=cut
	445
caba5c95	446	method info {
56b6dbe6	447	return {
	448	name => $self->name,
	449	description => $self->description,
	450	owner => $self->owner,
	451	last_change => $self->last_change,
	452	};
	453	};
29debefd	454
56b6dbe6	455	} # end class