# $Id: String.pm,v 1.5 2003/07/30 13:39:23 matt Exp $

package XML::SAX::PurePerl::Reader::String;

use strict;

use vars qw(@ISA);

use XML::SAX::PurePerl::Reader qw(

    LINE

    COLUMN

    BUFFER

    ENCODING

    EOF

);

@ISA = ('XML::SAX::PurePerl::Reader');

use constant DISCARDED => 7;

sub new {

    my $class = shift;

    my $string = shift;

    my @parts;

    @parts[BUFFER, EOF, LINE, COLUMN, DISCARDED] =

        ($string,   0,   1,    0,       '');

    return bless \@parts, $class;

}

sub read_more () { }

sub move_along {

    my $self = shift;

    my $discarded = substr($self->[BUFFER], 0, $_[0], '');

    $self->[DISCARDED] .= $discarded;

    # Wish I could skip this lot - tells us where we are in the file

    my $lines = $discarded =~ tr/\n//;

    $self->[LINE] += $lines;

    if ($lines) {

        $discarded =~ /\n([^\n]*)$/;

        $self->[COLUMN] = length($1);

    }

    else {

        $self->[COLUMN] += $_[0];

    }

}

sub set_encoding {

    my $self = shift;

    my ($encoding) = @_;

    XML::SAX::PurePerl::Reader::switch_encoding_string($self->[BUFFER], $encoding, "utf-8");

    $self->[ENCODING] = $encoding;

}

sub bytepos {

    my $self = shift;

    length($self->[DISCARDED]);

}

1;