NAME

Config::Model::Backend::Any - Virtual class for other backends

VERSION

version 1.225

SYNOPSIS

 package Config::Model::Backend::Foo ;
 use Moose ;
 use Log::Log4perl qw(get_logger :levels);

 extends 'Config::Model::Backend::Any';

 # optional
 sub suffix { 
   return '.foo';
 }

 # mandatory
 sub read {
    my $self = shift ;
    my %args = @_ ;

    # args are:
    # root       => './my_test',  # fake root directory, userd for tests
    # config_dir => /etc/foo',    # absolute path 
    # file       => 'foo.conf',   # file name
    # file_path  => './my_test/etc/foo/foo.conf' 
    # io_handle  => $io           # IO::File object
    # check      => yes|no|skip

    return 0 unless defined $args{io_handle} ; # or die?

    foreach ($args{io_handle}->getlines) {
        chomp ;
        s/#.*/ ;
        next unless /\S/; # skip blank line

        # $data is 'foo=bar' which is compatible with load 
        $self->node->load(step => $_, check => $args{check} ) ;
    }
    return 1 ;
 }

 # mandatory
 sub write {
    my $self = shift ;
    my %args = @_ ;

    # args are:
    # root       => './my_test',  # fake root directory, userd for tests
    # config_dir => /etc/foo',    # absolute path 
    # file       => 'foo.conf',   # file name
    # file_path  => './my_test/etc/foo/foo.conf' 
    # io_handle  => $io           # IO::File object
    # check      => yes|no|skip

    my $ioh = $args{io_handle} ;

    foreach my $elt ($self->node->get_element_name) {
        my $obj =  $self->node->fetch_element($elt) ;
        my $v   = $self->node->grab_value($elt) ;

        # write value
        $ioh->print(qq!$elt="$v"\n!) if defined $v ;
        $ioh->print("\n")            if defined $v ;
    }

    return 1;
 }

 no Moose ;
 __PACKAGE__->meta->make_immutable ;

DESCRIPTION

This Moose class is to be inherited by other backend plugin classes

See "read callback" in Config::Model::AutoRead and "write callback" in Config::Model::AutoRead for more details on the method that must be provided by any backend classes.

CONSTRUCTOR

new ( node => $node_obj, name => backend_name )

The constructor should be used only by Config::Model::Node.

Methods to override

annotation

Whether the backend supports to read and write annotation. Default i s 0. Override if your backend supports annotations

Methods

read_global_comments( lines , comment_char)

Read the global comments (i.e. the first block of comments until the first blank or non comment line) and store them as root node annotation. lines is an array ref containing file lines. =head1 AUTHOR

Dominique Dumont, (ddumont at cpan dot org)

SEE ALSO

Config::Model, Config::Model::AutoRead, Config::Model::Node, Config::Model::Backend::Yaml,