File Coverage

blib/lib/VCS/Lite/Repository.pm

Criterion	Covered	Total	%
statement	207	249	83.1
branch	49	84	58.3
condition	36	77	46.7
subroutine	26	27	96.3
pod	14	14	100.0
total	332	451	73.6

package VCS::Lite::Repository;

use 5.006;
use strict;
use warnings;

our $VERSION = '0.12';

#----------------------------------------------------------------------------

use Carp;
use File::Spec::Functions qw(:ALL !path);
use Time::Piece;
use VCS::Lite::Element;
use Params::Validate qw(:all);
use Cwd qw(abs_path);

use base qw(VCS::Lite::Common);

#----------------------------------------------------------------------------

sub new {
    my $pkg = shift;
    my $path = shift;
    my %args = validate ( @_,
        {
            store   => {
                type    => SCALAR | OBJECT,
                default => $pkg->default_store
            },
            verbose => 0,
        } );

    my $verbose = $args{verbose};

    if (-d $path) {
    } elsif (-f $path) {
        croak "Invalid path '$path' must be a directory";
    } else {
        mkdir $path or croak "Failed to create directory: $!";
    }

    my $abspath = abs_path($path);
    my $proto = bless {
        path        => $abspath,
        verbose     => $verbose,
        contents    => []
    },$pkg;

    my $store_pkg;
    if (ref $args{store}) {
        $store_pkg = $args{store};
    } else {
        $store_pkg = ($args{store} =~ /\:\:/) ? $args{store} : "VCS::Lite::Store::$args{store}";
        eval "require $store_pkg";
        warn "Failed to require $store_pkg\n$@" if $@;
    }

    my $repos = $store_pkg->retrieve_or_create($proto);
    if (exists $repos->{elements}) {
        $repos->_mumble("Upgrading repository $abspath from 0.02 to $VERSION");
        $repos->{contents} ||= $repos->{elements};
        delete $repos->{elements};
        $repos->save;
    }

    $repos->path($abspath);
    $repos->{author} = $repos->user;
    $repos->{verbose} = $verbose;
    $repos;
}

sub add {
    my $self = shift;
    my ($file) = validate_pos(@_, { type => SCALAR });

    my $path = $self->path;
    my ($vol,$dirs,$fil) = splitpath($file);
    my $absfile;
    my $remainder;

    if ($dirs) {
        my ($top,@dirs) = splitdir($dirs);
        $top = shift @dirs if $top eq '';     # VMS quirk
        pop @dirs if !defined($dirs[-1]) || ($dirs[-1] eq '');
        $absfile = abs_path(catfile($path,$top));
        mkdir $absfile unless -d $absfile;
        $remainder = @dirs ? catpath($vol,catdir(@dirs),$fil) : $fil;
        $file = $top;
    } else {
        $absfile = catfile($path,$fil);
    }

    unless ((catdir($file) eq updir) ||
           (catdir($file) eq curdir) ||
           grep {$file eq $_} @{$self->{contents}}) {

        $self->_mumble("Add $file to $path");

        my @newlist = sort(@{$self->{contents}},$file);
        $self->{transactions} ||= [];
        my @trans = (@{$self->{transactions}}, ['add',$file]);
        $self->_update_ctrl( contents => \@newlist, transactions => \@trans);
    }

    my $newobj = (
        -d $absfile)
            ? VCS::Lite::Repository->new($absfile, store => $self->{store})
            : VCS::Lite::Element->new($absfile, store => $self->{store}
    );

    $remainder ? $newobj->add($remainder) : $newobj;
}

sub add_element {
    my ($self,$file) = @_;
    (-d $file) ? undef : add(@_);
}

sub add_repository {
    my ($self,$dir) = @_;
    return if -f $dir;

    mkdir catfile($self->{path},$dir);
    add(@_);
}

sub remove {
    my $self = shift;
    my ($file) = validate_pos(@_, { type => SCALAR });

    my @contents;
    my $doit = 0;

    for (@{$self->{contents}}) {
        if ($file eq $_) {
            $doit++;
        } else {
            push @contents,$_;
        }
    }
    return unless $doit;

    $self->_mumble("Remove $file from " . $self->path);
    $self->{transactions} ||= [];
    my @trans = (@{$self->{transactions}}, ['remove',$file]);
    $self->_update_ctrl( contents => \@contents, transactions => \@trans);
    1;
}

sub contents {
    my $self = shift;

    map {
        my $file = catfile($self->{path},$_);
        (-d $file)
            ? VCS::Lite::Repository->new($file,
                verbose => $self->{verbose},
                store => $self->{store})
            : VCS::Lite::Element->new($file,
                verbose => $self->{verbose},
                store => $self->{store});
        } @{$self->{contents}};
}

sub elements {
    my $self = shift;

    grep {$_->isa('VCS::Lite::Element')} $self->contents;
}

sub repositories {
    my $self = shift;

    grep {$_->isa('VCS::Lite::Repository')} $self->contents;
}

sub traverse {
    my $self = shift;
    my $func = shift;
    my %args = validate(@_,
        {
            recurse => 0,
            params => { type => ARRAYREF | SCALAR, optional => 1 },
        } );

    my @out;
    $args{params} ||= [];
    $args{params} = [$args{params}] unless ref $args{params};

    for ($self->contents) {
        if ($args{recurse} && ($args{recurse} eq 'pre')) {
            my @subout = grep {defined $_} $_->traverse($func,%args);
            push @out,\@subout if @subout;
        }
        my @res = grep {defined $_} ((ref $func) ?
            &$func($_,@{$args{params}}) :
            $_->$func(@{$args{params}}));
        push @out,@res;
        if ($args{recurse} && ($args{recurse} ne 'pre')) {
            my @subout = grep {defined $_} $_->traverse($func,%args);
            push @out,\@subout if @subout;
        }
    }
    @out;
}

sub check_out {
    my $self = shift;
    my $newpath = shift;
    my %args = validate(@_,
        {
            store => { type => SCALAR|OBJECT, optional => 1 },
        } );

    $self->_mumble("Check out " . $self->path . " to $newpath");
#    $self->{transactions} ||= [];
    my $newrep = VCS::Lite::Repository->new(
        $newpath,
        verbose => $self->{verbose},
        %args);
    $newrep->_update_ctrl(
        parent              => $self->{path},
        contents            => $self->{contents},
        original_contents   => $self->{contents},
        parent_baseline     => $self->latest,
        parent_store        => $self->{store}
    );
    $self->traverse('_check_out_member', params => [$newpath,%args]);
    VCS::Lite::Repository->new(
        $newpath,
        verbose => $self->{verbose},
        %args);
    # This is different from the $newrep object, as it is fully populated.
}

sub check_in {
    my $self = shift;
    my %args = validate ( @_,
        {
            check_in_anyway => 0,
            description     => { type => SCALAR },
        } );

    $self->_mumble("Checking in " . $self->path);
    if (($self->{transactions} && @{$self->{transactions}})
        || $args{check_in_anyway}) {

        $self->_mumble("Updating directory changes");

        my $newgen = $args{generation} || $self->latest;
        $newgen =~ s/(\d+)$/$1+1/e;
        $self->{generation} ||= {};
        my %gen = %{$self->{generation}};
        $gen{$newgen} = {
            author          => $self->user,
            description     => $args{description},
            updated         => localtime->datetime,
            transactions    => $self->{transactions},
            contents        => $self->{contents},
        };

        $self->{latest} ||= {};
        my %lat = %{$self->{latest}};
        $newgen =~ /(\d+\.)*\d+$/;
        my $base = $1 || '';
        $lat{$base}=$newgen;
        delete $self->{transactions};

        $self->_update_ctrl( generation => \%gen, latest => \%lat);
    }

    $self->traverse('check_in', params => [%args]);
}

sub commit {
    my ($self,$parent) = @_;

    my $path = $self->path;
    my $repos_name = (splitdir($self->path))[-1];
    my $parent_repos_path = $self->{parent} || catdir($parent,$repos_name);
    $self->_mumble("Committing $path to $parent_repos_path");
    my $parent_repos = VCS::Lite::Repository->new(
        $parent_repos_path,
        verbose     => $self->{verbose},
        store       => $self->{parent_store} || $self->{store});

    my $orig = VCS::Lite->new($repos_name,undef,$parent_repos->{contents});
    my $changed = VCS::Lite->new($repos_name,undef,$self->{contents});

    $self->_apply($parent_repos,$orig->delta($changed));
    $self->traverse('commit',
        params => $self->{parent} || catdir($parent,$repos_name));
}

sub update {
    my ($self,$srep) = @_;

    my $file = $self->path;
    my $repos_name = (splitdir($file))[-1];
    $self->{parent} ||= catdir($srep,$repos_name);
    my $parent = $self->{parent};
    $self->_mumble("Updating $file from $parent");
    my $baseline = $self->{baseline} || 0;
    my $parbas = $self->{parent_baseline};

    my $orig = $self->fetch( generation => $baseline);
    my $parele = VCS::Lite::Repository->new(
        $parent,
        verbose => $self->{verbose},
        store => $self->{parent_store});

    my $parfrom  = $parele->fetch( generation => $parbas);
    my $parlat   = $parele->latest; # was latest($parbas) - buggy
    my $parto    = $parele->fetch( generation => $parlat);
    my $origplus = $parfrom->merge($parto,$orig);

    my $chg = VCS::Lite->new($repos_name,undef,$self->{contents});
    my $merged = $orig->merge($origplus,$chg);
    $parele->_apply($self,$chg->delta($merged));

    $self->_update_ctrl(baseline => $self->latest, parent_baseline => $parlat);

    $self->traverse('update', params => $parent);
}

sub fetch {
    my $self = shift;
    my %args = validate ( @_,
        {
            time        => 0,
            generation  => 0,
        } );

    my $gen = exists($args{generation}) ? $args{generation} : $self->latest;

    if ($args{time}) {
        my $latest_time = '';
        my $branch = $args{generation} || '';
        $branch .= '.' if $branch;

        for (keys %{$self->{generation}}) {
                next unless /^$branch\d+$/;
            next if $self->{generation}{$_}{updated} > $args{time};
            ($latest_time,$gen) = ($self->{generation}{$_}{updated}, $_)
            if $self->{generation}{$_}{updated} > $latest_time;
        }

        return unless $latest_time;
    }

    return if $gen && $self->{generation} && !$self->{generation}{$gen};

    my $cont =
        $gen
            ? $self->{generation}{$gen}{contents}
            : $self->{original_contents} || [];

    my $file = $self->{path};
    $gen ||= 0;
    VCS::Lite->new("$file\@\@$gen",undef,$cont);
}

sub _apply {
    my ($src,$dest,$delt) = @_;

    return unless $delt;

    my $srcpath = $src->path;
    my $path = $dest->path;

    for (map {@$_} $delt->hunks) {
        my ($ind,$lin,$val) = @$_;
        if ($ind eq '-') {
            $dest->remove($val);
        } elsif ($ind eq '+') {
            my $destname = catdir($path,$val);
            my $srcname = catdir($srcpath,$val);
            # $srcname is false if catdir can't construct a dir, e.g.
            # if on VMS and $val contains a dot
            mkdir $destname if $srcname && -d $srcname;
            my $newobj = $dest->add($val);
            if (exists($dest->{parent}) && ($dest->{parent} eq $srcpath)) {
                $newobj->{parent} = catdir($dest->{parent},$val);
                $newobj->{parent_store} = $dest->{parent_store};
                $newobj->{parent_baseline} = 0;
                $newobj->save;
            }
            if (exists($src->{parent}) && ($src->{parent} eq $path)) {
                my $srcobj = $src->{store}->retrieve($srcname);
                $srcobj->{parent} = catdir($src->{parent},$val);
                $srcobj->{parent_store} = $src->{parent_store};
                $srcobj->{parent_baseline} = 0;
                $srcobj->save;
            }
        }
    }
}

sub _check_out_member {
    my $self    = shift;
    my $newpath = shift;
    my %args = validate(@_,
        {
            store => { type => SCALAR|OBJECT, optional => 1 },
        } );

    my $repos_name = (splitdir($self->path))[-1];
    my $newrep = VCS::Lite::Repository->new(
        $newpath,
        verbose => $self->{verbose},
        %args);

    my $new_repos = catdir($newpath,$repos_name);

    $self->check_out($new_repos,%args);
}

sub _update_ctrl {
    my ($self,%args) = @_;

    my $path = $args{path} || $self->{path};
    for (keys %args) {
        $self->{$_} = $args{$_};
    }

    $self->{updated} = localtime->datetime;
    $self->save;
}

1;

__END__