[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

=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
                         },
                     );

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

=head1 METHODS

=head2 head_hash

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 heads

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

=cut

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

    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;
    }

=head2 references

Hashref of ArrayRefs for each reference.

=cut

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

    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;
    }

=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 ( $self->_is_valid_rev($sha1) ) {
            $sha1 = $self->head_hash($sha1);
        }
        return Object->new(
            project => $self,
            sha1 => $sha1,
        );
    }

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

    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;
    }

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

    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;

#  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;
    }

    # 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,
        };
    };

    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;
    }

=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
	46	=cut
29debefd	47
56b6dbe6	48	has name => ( isa => NonEmptySimpleStr,
01ced85b	49	is => 'ro', required => 1 );
b5b638f7	50
	51	=head2 path
	52
	53	L<Path::Class:Dir> for the location of the git repository.
	54
	55	=cut
	56
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
	65
0617cbd0	66	has description => ( isa => Str,
56b6dbe6	67	is => 'ro',
	68	lazy_build => 1,
	69	);
b5b638f7	70
	71	=head2 owner
	72
	73	Owner of the files on disk.
	74
	75	=cut
	76
56b6dbe6	77	has owner => ( isa => NonEmptySimpleStr,
	78	is => 'ro',
	79	lazy_build => 1,
	80	);
b5b638f7	81
	82	=head2 last_change
	83
	84	L<DateTime> for the time of the last update.
	85	undef if the repository has never been used.
	86
	87	=cut
	88
0617cbd0	89	has last_change => ( isa => Maybe['DateTime'],
56b6dbe6	90	is => 'ro',
	91	lazy_build => 1,
	92	);
	93
b5b638f7	94	=head2 is_bare
	95
	96	Bool indicating whether this Project is bare.
	97
	98	=cut
	99
	100	has is_bare => ( isa => Bool,
	101	is => 'ro',
	102	lazy => 1,
	103	default => sub {
	104	-d $_[0]->path->parent->subdir->($_[0]->name)
	105	? 1 : 0
	106	},
	107	);
84f31a44	108
01ced85b	109	method BUILD {
38b9e5c8	110	$self->$_() for qw/last_change owner description/; # Ensure to build early.
01ced85b	111	}
01ced85b	112
32a371cc	113	=head1 METHODS
8dbe8024	114
32a371cc	115	=head2 head_hash
894bff59	116
32a371cc	117	Return the sha1 for HEAD, or any specified head.
894bff59	118
32a371cc	119	=cut
56b6dbe6	120
32a371cc	121	method head_hash (Str $head?) {
	122	my $output = $self->run_cmd(qw/rev-parse --verify/, $head \|\| 'HEAD' );
	123	confess("No such head: " . $head) unless defined $output;
29debefd	124
32a371cc	125	my($sha1) = $output =~ /^($SHA1RE)$/;
32a371cc	126	return $sha1;
56b6dbe6	127	}
56b6dbe6	128
32a371cc	129
894bff59	130	=head2 heads
894bff59	131
c65cccc2	132	ArrayRef of hashes containing the name and sha1 of all heads.
894bff59	133
	134	=cut
	135
c65cccc2	136	has heads => ( isa => ArrayRef[HashRef], is => 'ro', lazy_build => 1);
	137
	138	method _build_heads {
32a371cc	139	my @revlines = $self->run_cmd_list(qw/for-each-ref --sort=-committerdate /, '--format=%(objectname)%00%(refname)%00%(committer)', 'refs/heads');
8dbe8024	140	my @ret;
32a371cc	141	for my $line (@revlines) {
8dbe8024	142	my ($rev, $head, $commiter) = split /\0/, $line, 3;
	143	$head =~ s!^refs/heads/!!;
	144
	145	push @ret, { sha1 => $rev, name => $head };
	146
	147	#FIXME: That isn't the time I'm looking for..
	148	if (my ($epoch, $tz) = $line =~ /\s(\d+)\s+([+-]\d+)$/) {
	149	my $dt = DateTime->from_epoch(epoch => $epoch);
	150	$dt->set_time_zone($tz);
	151	$ret[-1]->{last_change} = $dt;
	152	}
	153	}
	154
c65cccc2	155	return \@ret;
8dbe8024	156	}
8dbe8024	157
894bff59	158	=head2 references
894bff59	159
c65cccc2	160	Hashref of ArrayRefs for each reference.
894bff59	161
	162	=cut
	163
829d41ed	164	has references => ( isa => HashRef[ArrayRef[Str]], is => 'ro', lazy_build => 1 );
4111e151	165
b719ff6a	166	method _build_references {
b719ff6a	167	# 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
b719ff6a	168	# c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
32a371cc	169	my @reflist = $self->run_cmd_list(qw(show-ref --dereference))
b719ff6a	170	or return;
32a371cc	171	my %refs;
b719ff6a	172	for(@reflist) {
	173	push @{$refs{$1}}, $2
	174	if m!^($SHA1RE)\srefs/(.*)$!;
	175	}
	176
	177	return \%refs;
	178	}
4111e151	179
a8a8f8f9	180	=head2 list_tree
	181
	182	Return an array of contents for a given tree.
	183	The tree is specified by sha1, and defaults to HEAD.
	184	The keys for each item will be:
	185
	186	mode
	187	type
	188	object
	189	file
	190
	191	=cut
	192
	193	method list_tree (Str $sha1?) {
	194	$sha1 \|\|= $self->head_hash;
	195
	196	my $output = $self->run_cmd(qw/ls-tree -z/, $sha1);
	197	return unless defined $output;
	198
	199	my @ret;
	200	for my $line (split /\0/, $output) {
	201	my ($mode, $type, $object, $file) = split /\s+/, $line, 4;
	202	push @ret, Object->new( mode => oct $mode,
	203	type => $type,
	204	sha1 => $object,
	205	file => $file,
50394a3e	206	project => $self,
a8a8f8f9	207	);
	208	}
	209	return @ret;
	210	}
	211
8bb7649b	212	method get_object (NonEmptySimpleStr $sha1) {
894bff59	213	unless ( $self->_is_valid_rev($sha1) ) {
8bb7649b	214	$sha1 = $self->head_hash($sha1);
8bb7649b	215	}
77edf882	216	return Object->new(
54368e9d	217	project => $self,
	218	sha1 => $sha1,
	219	);
	220	}
8bb7649b	221
894bff59	222	method _is_valid_rev (Str $rev) {
	223	return ($rev =~ /^($SHA1RE)$/);
	224	}
	225
fc11c7f1	226	method hash_by_path ($base, $path = '', $type?) {
54368e9d	227	$path =~ s{/+$}();
32a371cc	228	# FIXME should this really just take the first result?
32a371cc	229	my @paths = $self->run_cmd('ls-tree', $base, '--', $path)
54368e9d	230	or return;
32a371cc	231	my $line = $paths[0];
54368e9d	232
	233	#'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa panic.c'
	234	$line =~ m/^([0-9]+) (.+) ($SHA1RE)\t/;
	235	return defined $type && $type ne $2
	236	? ()
	237	: $3;
	238	}
	239
4111e151	240	method list_revs ( NonEmptySimpleStr :$sha1!,
	241	Int :$count?,
	242	Int :$skip?,
	243	HashRef :$search?,
	244	NonEmptySimpleStr :$file?
	245	) {
	246	$sha1 = $self->head_hash($sha1)
	247	if !$sha1 \|\| $sha1 !~ $SHA1RE;
	248
	249	my @search_opts;
	250	if($search) {
	251	$search->{type} = 'grep'
	252	if $search->{type} eq 'commit';
	253	@search_opts = (
	254	# This seems a little fragile ...
	255	qq[--$search->{type}=$search->{text}],
	256	'--regexp-ignore-case',
	257	$search->{regexp} ? '--extended-regexp' : '--fixed-strings'
	258	);
	259	}
	260
	261	my $output = $self->run_cmd(
	262	'rev-list',
	263	'--header',
	264	(defined $count ? "--max-count=$count" : ()),
	265	(defined $skip ? "--skip=$skip" : ()),
	266	@search_opts,
	267	$sha1,
	268	'--',
	269	($file ? $file : ()),
	270	);
	271	return unless $output;
	272
	273	my @revs = $self->parse_rev_list($output);
	274
	275	return @revs;
	276	}
	277
	278	method parse_rev_list ($output) {
	279	return
	280	map $self->get_gpp_object($_),
894bff59	281	grep $self->_is_valid_rev($_),
4111e151	282	map split(/\n/, $_, 6), split /\0/, $output;
4111e151	283	}
54368e9d	284
77edf882	285	# XXX Ideally this would return a wee object instead of ad hoc structures.
	286	method diff ( Gitalist::Git::Object :$commit,
	287	Bool :$patch?,
fc948aee	288	Maybe[NonEmptySimpleStr] :$parent?,
77edf882	289	NonEmptySimpleStr :$file? ) {
	290	# Use parent if specifed, else take the parent from the commit
	291	# if there is only one, otherwise it was a merge commit.
	292	$parent = $parent
	293	? $parent
	294	: $commit->parents <= 1
	295	? $commit->parent_sha1
	296	: '-c';
	297	my @etc = (
	298	( $file ? ('--', $file) : () ),
	299	);
	300
	301	my @out = $self->raw_diff(
ba65bc52	302	( $patch ? '--patch-with-raw' : () ),
66a82e01	303	( $parent ? $parent : () ),
66a82e01	304	$commit->sha1, @etc,
77edf882	305	);
	306
	307	# XXX Yes, there is much wrongness having parse_diff_tree be destructive.
	308	my @difftree = $self->parse_diff_tree(\@out);
	309
	310	return \@difftree
	311	unless $patch;
	312
	313	# The blank line between the tree and the patch.
	314	shift @out;
	315
	316	# XXX And no I'm not happy about having diff return tree + patch.
	317	return \@difftree, [$self->parse_diff(@out)];
	318	}
	319
	320	method parse_diff (@diff) {
	321	my @ret;
	322	for (@diff) {
	323	# This regex is a little pathological.
	324	if(m{^diff --git (a/(.*?)) (b/\2)}) {
	325	push @ret, {
	326	head => $_,
	327	a => $1,
	328	b => $3,
	329	file => $2,
	330	diff => '',
	331	};
	332	next;
	333	}
	334
	335	if(/^index (\w+)\.\.(\w+) (\d+)$/) {
	336	@{$ret[-1]}{qw(index src dst mode)} = ($_, $1, $2, $3);
	337	next
	338	}
	339
	340	# XXX Somewhat hacky. Ahem.
	341	$ret[@ret ? -1 : 0]{diff} .= "$_\n";
	342	}
	343
	344	return @ret;
	345	}
	346
	347	# gitweb uses the following sort of command for diffing merges:
	348	# /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 --
	349	# and for regular diffs
	350	# /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 --
	351
	352	method raw_diff (@args) {
32a371cc	353	return $self->run_cmd_list(
77edf882	354	qw(diff-tree -r -M --no-commit-id --full-index),
	355	@args
	356	);
77edf882	357	}
	358
	359	method parse_diff_tree ($diff) {
	360	my @keys = qw(modesrc modedst sha1src sha1dst status src dst);
	361	my @ret;
	362	while (@$diff and $diff->[0] =~ /^:\d+/) {
	363	my $line = shift @$diff;
	364	# see. man git-diff-tree for more info
	365	# mode src, mode dst, sha1 src, sha1 dst, status, src[, dst]
	366	my @vals = $line =~ /^:(\d+) (\d+) ($SHA1RE) ($SHA1RE) ([ACDMRTUX]\d*)\t([^\t]+)(?:\t([^\n]+))?$/;
	367	my %line = zip @keys, @vals;
	368	# Some convenience keys
	369	$line{file} = $line{src};
	370	$line{sha1} = $line{sha1dst};
	371	$line{is_new} = $line{sha1src} =~ /^0+$/
	372	if $line{sha1src};
	373	@line{qw/status sim/} = $line{status} =~ /(R)(\d+)/
	374	if $line{status} =~ /^R/;
	375	push @ret, \%line;
	376	}
	377
	378	return @ret;
	379	}
54368e9d	380
d8abdf1c	381	method reflog (@logargs) {
	382	my @entries
	383	= $self->run_cmd(qw(log -g), @logargs)
	384	=~ /(^commit.+?(?:(?=^commit)\|(?=\z)))/msg;
	385
b719ff6a	386	# commit 02526fc15beddf2c64798a947fecdd8d11bf993d
	387	# Reflog: HEAD@{14} (The Git Server <git@git.dev.venda.com>)
	388	# Reflog message: push
	389	# Author: Foo Barsby <fbarsby@example.com>
	390	# Date: Thu Sep 17 12:26:05 2009 +0100
	391	#
	392	# Merge branch 'abc123'
d8abdf1c	393
	394	return map {
	395	# XXX Stuff like this makes me want to switch to Git::PurePerl
	396	my($sha1, $type, $author, $date)
	397	= m{
	398	^ commit \s+ ($SHA1RE)$
	399	.*?
	400	Reflog[ ]message: \s+ (.+?)$ \s+
	401	Author: \s+ ([^<]+) <.*?$ \s+
	402	Date: \s+ (.+?)$
	403	}xms;
	404
	405	pos($_) = index($_, $date) + length $date;
	406
	407	# Yeah, I just did that.
	408	my($msg) = /\G\s+(\S.*)/sg;
	409	{
	410	hash => $sha1,
	411	type => $type,
	412	author => $author,
	413
	414	# XXX Add DateTime goodness.
	415	date => $date,
	416	message => $msg,
	417	}
	418	;
	419	} @entries;
	420	}
	421
56b6dbe6	422	# Compatibility
56b6dbe6	423
caba5c95	424	=head2 info
56b6dbe6	425
	426	Returns a hash containing properties of this project. The keys will
	427	be:
	428
	429	name
	430	description (empty if .git/description is empty/unnamed)
	431	owner
	432	last_change
	433
	434	=cut
	435
caba5c95	436	method info {
56b6dbe6	437	return {
	438	name => $self->name,
	439	description => $self->description,
	440	owner => $self->owner,
	441	last_change => $self->last_change,
	442	};
	443	};
29debefd	444
32a371cc	445	method _build__util {
	446	Gitalist::Git::Util->new(
	447	project => $self,
	448	);
	449	}
	450
	451	method _build_description {
	452	my $description = "";
	453	eval {
	454	$description = $self->path->file('description')->slurp;
	455	chomp $description;
	456	};
	457	return $description;
	458	}
	459
	460	method _build_owner {
	461	my ($gecos, $name) = (getpwuid $self->path->stat->uid)[6,0];
	462	$gecos =~ s/,+$//;
	463	return length($gecos) ? $gecos : $name;
	464	}
	465
	466	method _build_last_change {
	467	my $last_change;
	468	my $output = $self->run_cmd(
	469	qw{ for-each-ref --format=%(committer)
	470	--sort=-committerdate --count=1 refs/heads
	471	});
	472	if (my ($epoch, $tz) = $output =~ /\s(\d+)\s+([+-]\d+)$/) {
	473	my $dt = DateTime->from_epoch(epoch => $epoch);
	474	$dt->set_time_zone($tz);
	475	$last_change = $dt;
	476	}
	477	return $last_change;
	478	}
	479
b5b638f7	480	=head1 SEE ALSO
	481
	482	L<Gitalist::Git::Util> L<Gitalist::Git::Object>
	483
	484	=head1 AUTHORS AND COPYRIGHT
	485
	486	Catalyst application:
	487	(C) 2009 Venda Ltd and Dan Brook <dbrook@venda.com>
	488
	489	Original gitweb.cgi from which this was derived:
	490	(C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
	491	(C) 2005, Christian Gierke
	492
	493	=head1 LICENSE
	494
	495	FIXME - Is this going to be GPLv2 as per gitweb? If so this is broken..
	496
	497	This library is free software. You can redistribute it and/or modify
	498	it under the same terms as Perl itself.
	499
	500	=cut
	501
56b6dbe6	502	} # end class