Gitalist::Git::Repository - Model of a git repository
Index
- NAME
- SYNOPSIS
- DESCRIPTION
- ATTRIBUTES
- METHODS
- head_hash ($head?)
- list_tree ($sha1?)
- get_object ($sha1)
- hash_by_path ($sha1, $path, $type?)
- list_revs ($sha1, $count?, $skip?, \%search?, $file?)
- snapshot ($sha1, $format)
- diff ($commit, $patch?, $parent?, $file?)
- reflog (@lorgargs)
- SEE ALSO
- AUTHORS
- LICENSE
Code Index:
NAME
Gitalist::Git::Repository - Model of a git repository
SYNOPSIS
my $gitrepo = dir('/repo/base/Gitalist');
my $repository = Gitalist::Git::Repository->new($gitrepo);
$repository->name; # 'Gitalist'
$repository->path; # '/repo/base/Gitalist/.git'
$repository->description; # 'Unnamed repository.'
DESCRIPTION
This class models a git repository, referred to in Gitalist
as a "Repository".
ATTRIBUTES
name
The name of the Repository. If unspecified, this will be derived from the path to the git repository.
path
Path::Class:Dir for the filesystem path to the git repository.
description
The contents of .git/description.
owner
Owner of the files on the filesystem.
last_change
The DateTime of the last modification of the repository. This will be undef if the repository has never been used.
is_bare
True if this is a bare git repository.
heads
An array of the name and sha1 of all heads/tags in the repository.
references
Hashref of ArrayRefs for each reference.
METHODS
head_hash ($head?)
Return the sha1 for HEAD, or any specified head.
list_tree ($sha1?)
Return an array of contents for a given tree.
The tree is specified by sha1, and defaults to HEAD.
Each item is a Gitalist::Git::Object.
get_object ($sha1)
Return an appropriate subclass of Gitalist::Git::Object for the given sha1.
hash_by_path ($sha1, $path, $type?)
Returns the sha1 for a given path, optionally limited by type.
list_revs ($sha1, $count?, $skip?, \%search?, $file?)
Returns a list of revs for the given head ($sha1).
Generate an archived snapshot of the repository.
$sha1 should be a commit or tree.
Returns a filehandle to read from.
diff ($commit, $patch?, $parent?, $file?)
reflog (@lorgargs)
Return a list of hashes representing each reflog entry.
FIXME Should this return objects?
SEE ALSO
AUTHORS
See Gitalist for authors.
LICENSE
See Gitalist for the license.
use MooseX::Declare;
class Gitalist::Git::Repository 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 Gitalist::Git::Types qw/SHA1/;
use MooseX::MultiMethods;
use Moose::Autobox;
use List::MoreUtils qw/any zip/;
use DateTime;
use Encode qw/decode/;
use I18N::Langinfo qw/langinfo CODESET/;
use Gitalist::Git::Object::Blob;
use Gitalist::Git::Object::Tree;
use Gitalist::Git::Object::Commit;
use Gitalist::Git::Object::Tag;
our $SHA1RE = qr/[0-9a-fA-F]{40}/;
around BUILDARGS (ClassName $class: Dir $dir) {
# Allows us to be called as Repository->new($dir)
# Last path component becomes $self->name
# Full path to git objects becomes $self->path
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);
}
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 is_bare => ( isa => Bool,
is => 'ro',
lazy => 1,
default => sub {
-d $_[0]->path->parent->subdir->($_[0]->name)
? 1 : 0
},
);
has heads => ( isa => ArrayRef[HashRef],
is => 'ro',
lazy_build => 1);
has tags => ( isa => ArrayRef[HashRef],
is => 'ro',
lazy_build => 1);
has references => ( isa => HashRef[ArrayRef[Str]],
is => 'ro',
lazy_build => 1 );
method BUILD {
$self->$_() for qw/last_change owner description/; # Ensure to build early.
}
## Public methods
multi method get_object_or_head (SHA1 $sha1) {
$self->get_object($sha1);
}
multi method get_object_or_head (NonEmptySimpleStr $ref) {
my $sha1 = $self->head_hash($ref);
$self->get_object($sha1);
}
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;
}
method list_tree (SHA1 $sha1?) {
$sha1 ||= $self->head_hash;
my $object = $self->get_object($sha1);
return @{$object->tree};
}
method get_object (NonEmptySimpleStr $sha1) {
unless (is_SHA1($sha1)) {
$sha1 = $self->head_hash($sha1);
}
my $type = $self->run_cmd('cat-file', '-t', $sha1);
chomp($type);
my $class = 'Gitalist::Git::Object::' . ucfirst($type);
$class->new(
repository => $self,
sha1 => $sha1,
type => $type,
);
}
method hash_by_path ($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 and exists $search->{text}) {
$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 snapshot (NonEmptySimpleStr :$sha1,
NonEmptySimpleStr :$format
) {
# TODO - only valid formats are 'tar' and 'zip'
my $formats = { tgz => 'tar', zip => 'zip' };
unless ($formats->exists($format)) {
die("No such format: $format");
}
$format = $formats->{$format};
my $name = $self->name;
$name =~ s,([^/])/*\.git$,$1,;
my $filename = $name;
$filename .= "-$sha1.$format";
$name =~ s/\047/\047\\\047\047/g;
my @cmd = ('archive', "--format=$format", "--prefix=$name/", $sha1);
return ($filename, $self->run_cmd_fh(@cmd));
# TODO - support compressed archives
}
method diff ( Gitalist::Git::Object :$commit!,
Bool :$patch?,
Maybe[NonEmptySimpleStr] :$parent?,
NonEmptySimpleStr :$filename?
) {
return $commit->diff( patch => $patch,
parent => $parent,
filename => $filename);
}
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(
repository => $self,
);
}
method _build_description {
my $description = "";
eval {
$description = $self->path->file('description')->slurp;
chomp $description;
};
$description = "Unnamed repository, edit the .git/description file to set a description"
if $description eq "Unnamed repository; edit this file 'description' to name the repository.";
return $description;
}
method _build_owner {
my ($gecos, $name) = map { decode(langinfo(CODESET), $_) } (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_tags {
my @revlines = $self->run_cmd_list('for-each-ref',
'--sort=-creatordate',
'--format=%(objectname) %(objecttype) %(refname) %(*objectname) %(*objecttype) %(subject)%00%(creator)',
'refs/tags'
);
my @ret;
for my $line (@revlines) {
my($refinfo, $creatorinfo) = split /\0/, $line;
my($rev, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
my($creator, $epoch, $tz) = ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
$name =~ s!^refs/tags/!!;
push @ret, { sha1 => $rev, name => $name };
#FIXME: That isn't the time I'm looking for..
if($epoch and $tz) {
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/(.*)$!;
}
return \%refs;
}
## Private methods
method _parse_rev_list ($output) {
return
map $self->get_gpp_object($_),
grep is_SHA1($_),
map split(/\n/, $_, 6), split /\0/, $output;
}
} # end class
__END__