lib/WebCoso/Config.pm


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package WebCoso::Config; 
use strict;
use warnings;
use WebCoso::Collections;
use WebCoso::Pipeline;
use WebCoso::X;
use utf8;
 
my @resources;
my $collections=WebCoso::Collections->new();
my %resource_to_pipeline;
 
sub read_scalar {
    my ($class,$content,$filename)=@_;
    $WebCoso::Config::Helpers::FILENAME=$filename;
    $content=<<'EOF'.$content;
package WEBCOSO::CONFIG;
no strict;
WebCoso::Config::Helpers->import();
EOF
    eval $content;
    if ($@) {
        WebCoso::X::ConfigError->throw(
            filename => $filename,
            nested => $@,
        );
    }
    else {
        return 1;
    }
}
 
sub add_resource {
    my ($class,$resource)=@_;
    push @resources,$resource;
}
 
sub get_all_resources {
    return @resources;
}
 
sub add_collection {
    my ($class,$collection)=@_;
    $collections->add_collection($collection);
}
 
sub get_collections {
    return $collections;
}
 
sub get_pipeline_for {
    my ($class, $resource)=@_;
 
    WebCoso::X::NoSuchResource->throw(
        resource => $resource,
    ) unless exists $resource_to_pipeline{$resource};
 
    return $resource_to_pipeline{$resource};
}
 
sub clear {
    @resources=();
    $collections=WebCoso::Collections->new();
    %resource_to_pipeline=();
}
 
package WebCoso::Config::Helpers; 
use Path::Class;
use WebCoso::Resource;
use WebCoso::Collection;
use Exporter::Lite;
use vars qw($FILENAME @EXPORT);
 
@EXPORT=qw(res coll);
 
sub res {
    my $dest_filename=pop @_;
    my $short_pipeline_name=pop @_;
    my @source_files=@_;
 
    my $config_dir=file($FILENAME)->parent->absolute;
 
    $dest_filename=file($dest_filename)->absolute($config_dir);
 
    my @abs_source_files = map {
        file($_)->absolute($config_dir);
    } @source_files;
 
    my $pipeline_name="WebCoso::Pipeline::$short_pipeline_name";
 
    if (! WebCoso::Pipeline->is_pipeline($pipeline_name)) {
        WebCoso::X::NoSuchPipeline->throw(
            pipeline => $short_pipeline_name,
        );
    };
 
    my $resource=WebCoso::Resource->new();
    $resource->set_property(sources=>[@abs_source_files]);
    $resource->set_property(destination=>$dest_filename);
 
    for my $filename (@abs_source_files) {
        $resource->set_property(
            {filename=>$filename},
            datastream => sub{_open_file($filename)},
        );
    }
 
    WebCoso::Config->add_resource($resource);
 
    # brutto! 
    $resource_to_pipeline{$resource}=$pipeline_name;
 
    return $resource;
}
 
sub coll {
    my ($name,$parents,$children,$resources)=@_;
 
    my $collection=WebCoso::Collection->new({
        name=>$name,
        parents=>$parents||[],
        children=>$children||[],
        resources=>$resources||[],
    });
 
    return $collection;
}
 
sub _open_file {
    my ($filename)=@_;
 
    open my $fh,'<:raw',$filename
        or WebCoso::X::OpenError->throw(
            filename => $filename,
            error => $!);
    return $fh;
}
 
1;