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# $Id: Reader.pm,v 1.11 2005/10/14 20:31:20 matt Exp $
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package XML::SAX::PurePerl::Reader;
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use strict;
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use XML::SAX::PurePerl::Reader::URI;
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use XML::SAX::PurePerl::Productions qw( $SingleChar $Letter $NameChar );
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use Exporter ();
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use vars qw(@ISA @EXPORT_OK);
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@ISA = qw(Exporter);
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@EXPORT_OK = qw(
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EOF
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BUFFER
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LINE
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COLUMN
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ENCODING
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XML_VERSION
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);
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use constant EOF => 0;
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use constant BUFFER => 1;
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use constant LINE => 2;
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use constant COLUMN => 3;
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use constant ENCODING => 4;
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use constant SYSTEM_ID => 5;
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use constant PUBLIC_ID => 6;
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use constant XML_VERSION => 7;
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require XML::SAX::PurePerl::Reader::Stream;
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require XML::SAX::PurePerl::Reader::String;
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if ($] >= 5.007002) {
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require XML::SAX::PurePerl::Reader::UnicodeExt;
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}
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else {
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require XML::SAX::PurePerl::Reader::NoUnicodeExt;
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}
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sub new {
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my $class = shift;
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my $thing = shift;
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# try to figure if this $thing is a handle of some sort
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if (ref($thing) && UNIVERSAL::isa($thing, 'IO::Handle')) {
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return XML::SAX::PurePerl::Reader::Stream->new($thing)->init;
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}
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my $ioref;
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if (tied($thing)) {
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my $class = ref($thing);
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no strict 'refs';
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$ioref = $thing if defined &{"${class}::TIEHANDLE"};
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}
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else {
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eval {
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$ioref = *{$thing}{IO};
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};
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undef $@;
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}
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if ($ioref) {
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return XML::SAX::PurePerl::Reader::Stream->new($thing)->init;
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}
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if ($thing =~ /</) {
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# assume it's a string
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return XML::SAX::PurePerl::Reader::String->new($thing)->init;
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}
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# assume it is a uri
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return XML::SAX::PurePerl::Reader::URI->new($thing)->init;
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}
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sub init {
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my $self = shift;
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$self->[LINE] = 1;
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$self->[COLUMN] = 1;
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$self->read_more;
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return $self;
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}
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sub data {
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my ($self, $min_length) = (@_, 1);
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if (length($self->[BUFFER]) < $min_length) {
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$self->read_more;
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}
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return $self->[BUFFER];
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}
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sub match {
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my ($self, $char) = @_;
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my $data = $self->data;
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if (substr($data, 0, 1) eq $char) {
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$self->move_along(1);
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return 1;
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}
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return 0;
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}
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sub public_id {
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my $self = shift;
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@_ and $self->[PUBLIC_ID] = shift;
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$self->[PUBLIC_ID];
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}
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sub system_id {
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my $self = shift;
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@_ and $self->[SYSTEM_ID] = shift;
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$self->[SYSTEM_ID];
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}
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sub line {
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shift->[LINE];
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}
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sub column {
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shift->[COLUMN];
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}
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sub get_encoding {
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my $self = shift;
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return $self->[ENCODING];
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}
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sub get_xml_version {
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my $self = shift;
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return $self->[XML_VERSION];
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}
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1;
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__END__
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=head1 NAME
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XML::Parser::PurePerl::Reader - Abstract Reader factory class
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=cut
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