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

use MooseX::Declare;

=head1 NAME

Gitalist::Git::Project - Model of a git repository

=head1 SYNOPSIS

    my $gitrepo = dir('/repo/base/Gitalist');
    my $project = Gitalist::Git::Project->new($gitrepo);
     $project->name;        # 'Gitalist'
     $project->path;        # '/repo/base/Gitalist/.git'
     $project->description; # 'Unnamed repository.'

=head1 DESCRIPTION

This class models a git repository, referred to in Gitalist
as a "Project".

=cut

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

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

    around BUILDARGS (ClassName $class: Dir $dir) {
        my $name = $dir->dir_list(-1);
        $dir = $dir->subdir('.git') if (-f $dir->file('.git', 'HEAD'));
        confess("Can't find a git repository at " . $dir)
            unless ( -f $dir->file('HEAD') );
        return $class->$orig(name => $name,
                             path => $dir);
    }

=head1 ATTRIBUTES

=head2 name

The name of the Project.  By default, this is derived from the path to the git repository.

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

=head2 path

L<Path::Class:Dir> for the location of the git repository.

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

=head2 description

String containing .git/description

=cut
    has description => ( isa => Str,
                         is => 'ro',
                         lazy_build => 1,
                     );

=head2 owner

Owner of the files on disk.

=cut
    has owner => ( isa => NonEmptySimpleStr,
                   is => 'ro',
                   lazy_build => 1,
               );

=head2 last_change

L<DateTime> for the time of the last update.
undef if the repository has never been used.

=cut
    has last_change => ( isa => Maybe['DateTime'],
                         is => 'ro',
                         lazy_build => 1,
                     );

=head2 is_bare

Bool indicating whether this Project is bare.

=cut
    has is_bare => ( isa => Bool,
                     is => 'ro',
                     lazy => 1,
                     default => sub {
                         -d $_[0]->path->parent->subdir->($_[0]->name)
                             ? 1 : 0
                         },
                     );

=head2 heads

ArrayRef of hashes containing the name and sha1 of all heads.

=cut
    has heads => ( isa => ArrayRef[HashRef],
                   is => 'ro',
                   lazy_build => 1);

=head2 references

Hashref of ArrayRefs for each reference.

=cut
    has references => ( isa => HashRef[ArrayRef[Str]],
                        is => 'ro',
                        lazy_build => 1 );

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

=head1 METHODS

=head2 head_hash ($head?)

Return the sha1 for HEAD, or any specified head.

=cut
    method head_hash (Str $head?) {
        my $output = $self->run_cmd(qw/rev-parse --verify/, $head || 'HEAD' );
        confess("No such head: " . $head) unless defined $output;

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

=head2 list_tree ($sha1?)

Return an array of contents for a given tree.
The tree is specified by sha1, and defaults to HEAD.
Each item is a L<Gitalist::Git::Object>.

=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;
    }

=head2 get_object ($sha1)

Return a L<Gitalist::Git::Object> for the given sha1.

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

=head2 hash_by_path($sha1, $path, $type?)

Returns the sha1 for a given path, optionally limited by type.

=cut
    method hash_by_path ($base, $path = '', $type?) {
        $path =~ s{/+$}();
        # FIXME should this really just take the first result?
        my @paths = $self->run_cmd('ls-tree', $base, '--', $path)
            or return;
        my $line = $paths[0];

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

=head2 list_revs($sha1, $count?, $skip?, \%search?, $file?)

Returns a list of revs for the given head ($sha1).

=cut
    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;
    }

=head2 diff($commit, $patch?, $parent?, $file?)

Generate a diff.

FIXME this should be a method on the commit object.

=cut

    # 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 ? $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)];
    }

=head2 reflog(@lorgargs)

Return a list of hashes representing each reflog entry.

FIXME Should this return objects?

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

#  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'

        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;
    }

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

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

    method _build_owner {
        my ($gecos, $name) = (getpwuid $self->path->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 _build_heads {
        my @revlines = $self->run_cmd_list(qw/for-each-ref --sort=-committerdate /, '--format=%(objectname)%00%(refname)%00%(committer)', 'refs/heads');
        my @ret;
        for my $line (@revlines) {
            my ($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 _build_references {
    	# 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
    	# c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
    	my @reflist = $self->run_cmd_list(qw(show-ref --dereference))
	    	or return;
        my %refs;
	    for(@reflist) {
		    push @{$refs{$1}}, $2
			    if m!^($SHA1RE)\srefs/(.*)$!;
	    }

	    return \%refs;
    }

    ## Private methods
    method _is_valid_rev (Str $rev) {
        return ($rev =~ /^($SHA1RE)$/);
    }

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

    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 _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) {
        return $self->run_cmd_list(
            qw(diff-tree -r -M --no-commit-id --full-index),
            @args
        );
    }

=head1 SEE ALSO

L<Gitalist::Git::Util> L<Gitalist::Git::Object>

=head1 AUTHORS AND COPYRIGHT

  Catalyst application:
    (C) 2009 Venda Ltd and Dan Brook <dbrook@venda.com>

  Original gitweb.cgi from which this was derived:
    (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
    (C) 2005, Christian Gierke

=head1 LICENSE

FIXME - Is this going to be GPLv2 as per gitweb? If so this is broken..

This library is free software. You can redistribute it and/or modify
it under the same terms as Perl itself.

=cut

} # end class
Commit	Line	Data
56b6dbe6	1	use MooseX::Declare;
56b6dbe6	2
b5b638f7	3	=head1 NAME
b5b638f7	4
894bff59	5	Gitalist::Git::Project - Model of a git repository
b5b638f7	6
	7	=head1 SYNOPSIS
	8
561a3f14	9	my $gitrepo = dir('/repo/base/Gitalist');
	10	my $project = Gitalist::Git::Project->new($gitrepo);
	11	$project->name; # 'Gitalist'
	12	$project->path; # '/repo/base/Gitalist/.git'
	13	$project->description; # 'Unnamed repository.'
b5b638f7	14
	15	=head1 DESCRIPTION
	16
	17	This class models a git repository, referred to in Gitalist
	18	as a "Project".
	19
	20	=cut
	21
38b9e5c8	22	class Gitalist::Git::Project with Gitalist::Git::HasUtils {
56b6dbe6	23	# FIXME, use Types::Path::Class and coerce
56b6dbe6	24	use MooseX::Types::Common::String qw/NonEmptySimpleStr/;
84f31a44	25	use MooseX::Types::Path::Class qw/Dir/;
829d41ed	26	use MooseX::Types::Moose qw/Str Maybe Bool HashRef ArrayRef/;
77edf882	27	use List::MoreUtils qw/any zip/;
b5b638f7	28	use DateTime;
a8a8f8f9	29	use aliased 'Gitalist::Git::Object';
56b6dbe6	30
32a371cc	31	our $SHA1RE = qr/[0-9a-fA-F]{40}/;
	32
	33	around BUILDARGS (ClassName $class: Dir $dir) {
	34	my $name = $dir->dir_list(-1);
	35	$dir = $dir->subdir('.git') if (-f $dir->file('.git', 'HEAD'));
	36	confess("Can't find a git repository at " . $dir)
	37	unless ( -f $dir->file('HEAD') );
	38	return $class->$orig(name => $name,
	39	path => $dir);
	40	}
	41
b5b638f7	42	=head1 ATTRIBUTES
	43
	44	=head2 name
	45
cc88eca5	46	The name of the Project. By default, this is derived from the path to the git repository.
29debefd	47
cc88eca5	48	=cut
56b6dbe6	49	has name => ( isa => NonEmptySimpleStr,
01ced85b	50	is => 'ro', required => 1 );
b5b638f7	51
	52	=head2 path
	53
	54	L<Path::Class:Dir> for the location of the git repository.
	55
	56	=cut
84f31a44	57	has path => ( isa => Dir,
01ced85b	58	is => 'ro', required => 1);
56b6dbe6	59
b5b638f7	60	=head2 description
	61
	62	String containing .git/description
	63
	64	=cut
0617cbd0	65	has description => ( isa => Str,
56b6dbe6	66	is => 'ro',
	67	lazy_build => 1,
	68	);
b5b638f7	69
	70	=head2 owner
	71
	72	Owner of the files on disk.
	73
	74	=cut
56b6dbe6	75	has owner => ( isa => NonEmptySimpleStr,
	76	is => 'ro',
	77	lazy_build => 1,
	78	);
b5b638f7	79
	80	=head2 last_change
	81
	82	L<DateTime> for the time of the last update.
	83	undef if the repository has never been used.
	84
	85	=cut
0617cbd0	86	has last_change => ( isa => Maybe['DateTime'],
56b6dbe6	87	is => 'ro',
	88	lazy_build => 1,
	89	);
	90
b5b638f7	91	=head2 is_bare
	92
	93	Bool indicating whether this Project is bare.
	94
	95	=cut
b5b638f7	96	has is_bare => ( isa => Bool,
	97	is => 'ro',
	98	lazy => 1,
	99	default => sub {
	100	-d $_[0]->path->parent->subdir->($_[0]->name)
	101	? 1 : 0
	102	},
	103	);
84f31a44	104
cc88eca5	105	=head2 heads
	106
	107	ArrayRef of hashes containing the name and sha1 of all heads.
	108
	109	=cut
	110	has heads => ( isa => ArrayRef[HashRef],
	111	is => 'ro',
	112	lazy_build => 1);
	113
	114	=head2 references
	115
	116	Hashref of ArrayRefs for each reference.
	117
	118	=cut
	119	has references => ( isa => HashRef[ArrayRef[Str]],
	120	is => 'ro',
	121	lazy_build => 1 );
	122
01ced85b	123	method BUILD {
38b9e5c8	124	$self->$_() for qw/last_change owner description/; # Ensure to build early.
01ced85b	125	}
01ced85b	126
32a371cc	127	=head1 METHODS
8dbe8024	128
cc88eca5	129	=head2 head_hash ($head?)
894bff59	130
32a371cc	131	Return the sha1 for HEAD, or any specified head.
894bff59	132
32a371cc	133	=cut
32a371cc	134	method head_hash (Str $head?) {
	135	my $output = $self->run_cmd(qw/rev-parse --verify/, $head \|\| 'HEAD' );
	136	confess("No such head: " . $head) unless defined $output;
29debefd	137
32a371cc	138	my($sha1) = $output =~ /^($SHA1RE)$/;
32a371cc	139	return $sha1;
56b6dbe6	140	}
56b6dbe6	141
cc88eca5	142	=head2 list_tree ($sha1?)
a8a8f8f9	143
	144	Return an array of contents for a given tree.
	145	The tree is specified by sha1, and defaults to HEAD.
cc88eca5	146	Each item is a L<Gitalist::Git::Object>.
a8a8f8f9	147
a8a8f8f9	148	=cut
a8a8f8f9	149	method list_tree (Str $sha1?) {
	150	$sha1 \|\|= $self->head_hash;
	151
	152	my $output = $self->run_cmd(qw/ls-tree -z/, $sha1);
	153	return unless defined $output;
	154
	155	my @ret;
	156	for my $line (split /\0/, $output) {
	157	my ($mode, $type, $object, $file) = split /\s+/, $line, 4;
	158	push @ret, Object->new( mode => oct $mode,
	159	type => $type,
	160	sha1 => $object,
	161	file => $file,
50394a3e	162	project => $self,
a8a8f8f9	163	);
	164	}
	165	return @ret;
	166	}
	167
cc88eca5	168	=head2 get_object ($sha1)
	169
	170	Return a L<Gitalist::Git::Object> for the given sha1.
	171
	172	=cut
8bb7649b	173	method get_object (NonEmptySimpleStr $sha1) {
894bff59	174	unless ( $self->_is_valid_rev($sha1) ) {
8bb7649b	175	$sha1 = $self->head_hash($sha1);
8bb7649b	176	}
77edf882	177	return Object->new(
54368e9d	178	project => $self,
	179	sha1 => $sha1,
	180	);
	181	}
8bb7649b	182
cc88eca5	183	=head2 hash_by_path($sha1, $path, $type?)
894bff59	184
cc88eca5	185	Returns the sha1 for a given path, optionally limited by type.
	186
	187	=cut
fc11c7f1	188	method hash_by_path ($base, $path = '', $type?) {
54368e9d	189	$path =~ s{/+$}();
32a371cc	190	# FIXME should this really just take the first result?
32a371cc	191	my @paths = $self->run_cmd('ls-tree', $base, '--', $path)
54368e9d	192	or return;
32a371cc	193	my $line = $paths[0];
54368e9d	194
	195	#'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa panic.c'
	196	$line =~ m/^([0-9]+) (.+) ($SHA1RE)\t/;
	197	return defined $type && $type ne $2
	198	? ()
	199	: $3;
	200	}
	201
cc88eca5	202	=head2 list_revs($sha1, $count?, $skip?, \%search?, $file?)
	203
	204	Returns a list of revs for the given head ($sha1).
	205
	206	=cut
4111e151	207	method list_revs ( NonEmptySimpleStr :$sha1!,
	208	Int :$count?,
	209	Int :$skip?,
	210	HashRef :$search?,
	211	NonEmptySimpleStr :$file?
	212	) {
	213	$sha1 = $self->head_hash($sha1)
	214	if !$sha1 \|\| $sha1 !~ $SHA1RE;
	215
	216	my @search_opts;
	217	if($search) {
	218	$search->{type} = 'grep'
	219	if $search->{type} eq 'commit';
	220	@search_opts = (
	221	# This seems a little fragile ...
	222	qq[--$search->{type}=$search->{text}],
	223	'--regexp-ignore-case',
	224	$search->{regexp} ? '--extended-regexp' : '--fixed-strings'
	225	);
	226	}
	227
	228	my $output = $self->run_cmd(
	229	'rev-list',
	230	'--header',
	231	(defined $count ? "--max-count=$count" : ()),
	232	(defined $skip ? "--skip=$skip" : ()),
	233	@search_opts,
	234	$sha1,
	235	'--',
	236	($file ? $file : ()),
	237	);
	238	return unless $output;
	239
cc88eca5	240	my @revs = $self->_parse_rev_list($output);
4111e151	241
	242	return @revs;
	243	}
	244
cc88eca5	245	=head2 diff($commit, $patch?, $parent?, $file?)
	246
	247	Generate a diff.
	248
	249	FIXME this should be a method on the commit object.
	250
	251	=cut
54368e9d	252
77edf882	253	# XXX Ideally this would return a wee object instead of ad hoc structures.
cc88eca5	254	method diff ( Gitalist::Git::Object :$commit!,
77edf882	255	Bool :$patch?,
fc948aee	256	Maybe[NonEmptySimpleStr] :$parent?,
77edf882	257	NonEmptySimpleStr :$file? ) {
	258	# Use parent if specifed, else take the parent from the commit
	259	# if there is only one, otherwise it was a merge commit.
	260	$parent = $parent
	261	? $parent
	262	: $commit->parents <= 1
	263	? $commit->parent_sha1
	264	: '-c';
	265	my @etc = (
	266	( $file ? ('--', $file) : () ),
	267	);
	268
cc88eca5	269	my @out = $self->_raw_diff(
ba65bc52	270	( $patch ? '--patch-with-raw' : () ),
66a82e01	271	( $parent ? $parent : () ),
66a82e01	272	$commit->sha1, @etc,
77edf882	273	);
77edf882	274
cc88eca5	275	# XXX Yes, there is much wrongness having _parse_diff_tree be destructive.
cc88eca5	276	my @difftree = $self->_parse_diff_tree(\@out);
77edf882	277
	278	return \@difftree
	279	unless $patch;
	280
	281	# The blank line between the tree and the patch.
	282	shift @out;
	283
	284	# XXX And no I'm not happy about having diff return tree + patch.
cc88eca5	285	return \@difftree, [$self->_parse_diff(@out)];
77edf882	286	}
77edf882	287
cc88eca5	288	=head2 reflog(@lorgargs)
77edf882	289
cc88eca5	290	Return a list of hashes representing each reflog entry.
77edf882	291
cc88eca5	292	FIXME Should this return objects?
54368e9d	293
cc88eca5	294	=cut
d8abdf1c	295	method reflog (@logargs) {
	296	my @entries
	297	= $self->run_cmd(qw(log -g), @logargs)
	298	=~ /(^commit.+?(?:(?=^commit)\|(?=\z)))/msg;
	299
b719ff6a	300	# commit 02526fc15beddf2c64798a947fecdd8d11bf993d
	301	# Reflog: HEAD@{14} (The Git Server <git@git.dev.venda.com>)
	302	# Reflog message: push
	303	# Author: Foo Barsby <fbarsby@example.com>
	304	# Date: Thu Sep 17 12:26:05 2009 +0100
	305	#
	306	# Merge branch 'abc123'
d8abdf1c	307
	308	return map {
	309	# XXX Stuff like this makes me want to switch to Git::PurePerl
	310	my($sha1, $type, $author, $date)
	311	= m{
	312	^ commit \s+ ($SHA1RE)$
	313	.*?
	314	Reflog[ ]message: \s+ (.+?)$ \s+
	315	Author: \s+ ([^<]+) <.*?$ \s+
	316	Date: \s+ (.+?)$
	317	}xms;
	318
	319	pos($_) = index($_, $date) + length $date;
	320
	321	# Yeah, I just did that.
	322	my($msg) = /\G\s+(\S.*)/sg;
	323	{
	324	hash => $sha1,
	325	type => $type,
	326	author => $author,
	327
	328	# XXX Add DateTime goodness.
	329	date => $date,
	330	message => $msg,
	331	}
	332	;
	333	} @entries;
	334	}
	335
cc88eca5	336	## BUILDERS
32a371cc	337	method _build__util {
	338	Gitalist::Git::Util->new(
	339	project => $self,
	340	);
	341	}
	342
	343	method _build_description {
	344	my $description = "";
	345	eval {
	346	$description = $self->path->file('description')->slurp;
	347	chomp $description;
	348	};
	349	return $description;
	350	}
	351
	352	method _build_owner {
	353	my ($gecos, $name) = (getpwuid $self->path->stat->uid)[6,0];
	354	$gecos =~ s/,+$//;
	355	return length($gecos) ? $gecos : $name;
	356	}
	357
	358	method _build_last_change {
	359	my $last_change;
	360	my $output = $self->run_cmd(
	361	qw{ for-each-ref --format=%(committer)
	362	--sort=-committerdate --count=1 refs/heads
	363	});
	364	if (my ($epoch, $tz) = $output =~ /\s(\d+)\s+([+-]\d+)$/) {
	365	my $dt = DateTime->from_epoch(epoch => $epoch);
	366	$dt->set_time_zone($tz);
	367	$last_change = $dt;
	368	}
	369	return $last_change;
	370	}
	371
cc88eca5	372	method _build_heads {
	373	my @revlines = $self->run_cmd_list(qw/for-each-ref --sort=-committerdate /, '--format=%(objectname)%00%(refname)%00%(committer)', 'refs/heads');
	374	my @ret;
	375	for my $line (@revlines) {
	376	my ($rev, $head, $commiter) = split /\0/, $line, 3;
	377	$head =~ s!^refs/heads/!!;
	378
	379	push @ret, { sha1 => $rev, name => $head };
	380
	381	#FIXME: That isn't the time I'm looking for..
	382	if (my ($epoch, $tz) = $line =~ /\s(\d+)\s+([+-]\d+)$/) {
	383	my $dt = DateTime->from_epoch(epoch => $epoch);
	384	$dt->set_time_zone($tz);
	385	$ret[-1]->{last_change} = $dt;
	386	}
	387	}
	388
	389	return \@ret;
	390	}
	391
	392	method _build_references {
	393	# 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
	394	# c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
	395	my @reflist = $self->run_cmd_list(qw(show-ref --dereference))
	396	or return;
	397	my %refs;
	398	for(@reflist) {
	399	push @{$refs{$1}}, $2
	400	if m!^($SHA1RE)\srefs/(.*)$!;
	401	}
	402
	403	return \%refs;
	404	}
	405
	406	## Private methods
	407	method _is_valid_rev (Str $rev) {
	408	return ($rev =~ /^($SHA1RE)$/);
	409	}
	410
	411	method _parse_rev_list ($output) {
	412	return
	413	map $self->get_gpp_object($_),
	414	grep $self->_is_valid_rev($_),
	415	map split(/\n/, $_, 6), split /\0/, $output;
	416	}
	417
	418	method _parse_diff_tree ($diff) {
	419	my @keys = qw(modesrc modedst sha1src sha1dst status src dst);
	420	my @ret;
	421	while (@$diff and $diff->[0] =~ /^:\d+/) {
	422	my $line = shift @$diff;
	423	# see. man git-diff-tree for more info
	424	# mode src, mode dst, sha1 src, sha1 dst, status, src[, dst]
	425	my @vals = $line =~ /^:(\d+) (\d+) ($SHA1RE) ($SHA1RE) ([ACDMRTUX]\d*)\t([^\t]+)(?:\t([^\n]+))?$/;
	426	my %line = zip @keys, @vals;
	427	# Some convenience keys
	428	$line{file} = $line{src};
	429	$line{sha1} = $line{sha1dst};
	430	$line{is_new} = $line{sha1src} =~ /^0+$/
	431	if $line{sha1src};
	432	@line{qw/status sim/} = $line{status} =~ /(R)(\d+)/
	433	if $line{status} =~ /^R/;
	434	push @ret, \%line;
	435	}
436
437	return @ret;
438	}
439	method _parse_diff (@diff) {
440	my @ret;
441	for (@diff) {
442	# This regex is a little pathological.
443	if(m{^diff --git (a/(.*?)) (b/\2)}) {
444	push @ret, {
445	head => $_,
446	a => $1,
447	b => $3,
448	file => $2,
449	diff => '',
450	};
451	next;
452	}
453
454	if(/^index (\w+)\.\.(\w+) (\d+)$/) {
455	@{$ret[-1]}{qw(index src dst mode)} = ($_, $1, $2, $3);
456	next
457	}
458
459	# XXX Somewhat hacky. Ahem.
460	$ret[@ret ? -1 : 0]{diff} .= "$_\n";
461	}
462
463	return @ret;
464	}
465
466	# gitweb uses the following sort of command for diffing merges:
467	# /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 --
468	# and for regular diffs
469	# /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 --
470	method _raw_diff (@args) {
471	return $self->run_cmd_list(
472	qw(diff-tree -r -M --no-commit-id --full-index),
473	@args
474	);
475	}
476
b5b638f7	477	=head1 SEE ALSO
	478
	479	L<Gitalist::Git::Util> L<Gitalist::Git::Object>
	480
	481	=head1 AUTHORS AND COPYRIGHT
	482
	483	Catalyst application:
	484	(C) 2009 Venda Ltd and Dan Brook <dbrook@venda.com>
	485
	486	Original gitweb.cgi from which this was derived:
	487	(C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
	488	(C) 2005, Christian Gierke
	489
	490	=head1 LICENSE
	491
	492	FIXME - Is this going to be GPLv2 as per gitweb? If so this is broken..
	493
	494	This library is free software. You can redistribute it and/or modify
	495	it under the same terms as Perl itself.
	496
	497	=cut
	498
56b6dbe6	499	} # end class