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# $Id$ 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