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|
# $Id: Reader.pm,v 1.13 2008-08-05 12:37:13 grant Exp $
package XML::SAX::PurePerl::Reader;
use strict;
use XML::SAX::PurePerl::Reader::URI;
use Exporter ();
use vars qw(@ISA @EXPORT_OK);
@ISA = qw(Exporter);
@EXPORT_OK = qw(
EOF
BUFFER
LINE
COLUMN
ENCODING
XML_VERSION
);
use constant EOF => 0;
use constant BUFFER => 1;
use constant LINE => 2;
use constant COLUMN => 3;
use constant ENCODING => 4;
use constant SYSTEM_ID => 5;
use constant PUBLIC_ID => 6;
use constant XML_VERSION => 7;
require XML::SAX::PurePerl::Reader::Stream;
require XML::SAX::PurePerl::Reader::String;
if ($] >= 5.007002) {
require XML::SAX::PurePerl::Reader::UnicodeExt;
}
else {
require XML::SAX::PurePerl::Reader::NoUnicodeExt;
}
sub new {
my $class = shift;
my $thing = shift;
# try to figure if this $thing is a handle of some sort
if (ref($thing) && UNIVERSAL::isa($thing, 'IO::Handle')) {
return XML::SAX::PurePerl::Reader::Stream->new($thing)->init;
}
my $ioref;
if (tied($thing)) {
my $class = ref($thing);
no strict 'refs';
$ioref = $thing if defined &{"${class}::TIEHANDLE"};
}
else {
eval {
$ioref = *{$thing}{IO};
};
undef $@;
}
if ($ioref) {
return XML::SAX::PurePerl::Reader::Stream->new($thing)->init;
}
if ($thing =~ /</) {
# assume it's a string
return XML::SAX::PurePerl::Reader::String->new($thing)->init;
}
# assume it is a uri
return XML::SAX::PurePerl::Reader::URI->new($thing)->init;
}
sub init {
my $self = shift;
$self->[LINE] = 1;
$self->[COLUMN] = 1;
$self->read_more;
return $self;
}
sub data {
my ($self, $min_length) = (@_, 1);
if (length($self->[BUFFER]) < $min_length) {
$self->read_more;
}
return $self->[BUFFER];
}
sub match {
my ($self, $char) = @_;
my $data = $self->data;
if (substr($data, 0, 1) eq $char) {
$self->move_along(1);
return 1;
}
return 0;
}
sub public_id {
my $self = shift;
@_ and $self->[PUBLIC_ID] = shift;
$self->[PUBLIC_ID];
}
sub system_id {
my $self = shift;
@_ and $self->[SYSTEM_ID] = shift;
$self->[SYSTEM_ID];
}
sub line {
shift->[LINE];
}
sub column {
shift->[COLUMN];
}
sub get_encoding {
my $self = shift;
return $self->[ENCODING];
}
sub get_xml_version {
my $self = shift;
return $self->[XML_VERSION];
}
1;
__END__
=head1 NAME
XML::Parser::PurePerl::Reader - Abstract Reader factory class
=cut
|
