JezK
Edit File: Literal.pm
# $Id$ # # This is free software, you may use it and distribute it under the same terms as # Perl itself. # # Copyright 2001-2003 AxKit.com Ltd., 2002-2006 Christian Glahn, 2006-2009 Petr Pajas # # package XML::LibXML::Literal; use XML::LibXML::Boolean; use XML::LibXML::Number; use strict; use warnings; use vars qw ($VERSION); $VERSION = "2.0134"; # VERSION TEMPLATE: DO NOT CHANGE use overload '""' => \&value, 'cmp' => \&cmp; sub new { my $class = shift; my ($string) = @_; # $string =~ s/"/"/g; # $string =~ s/'/'/g; bless \$string, $class; } sub as_string { my $self = shift; my $string = $$self; $string =~ s/'/'/g; return "'$string'"; } sub as_xml { my $self = shift; my $string = $$self; return "<Literal>$string</Literal>\n"; } sub value { my $self = shift; $$self; } sub cmp { my $self = shift; my ($cmp, $swap) = @_; if ($swap) { return $cmp cmp $$self; } return $$self cmp $cmp; } sub evaluate { my $self = shift; $self; } sub to_boolean { my $self = shift; return (length($$self) > 0) ? XML::LibXML::Boolean->True : XML::LibXML::Boolean->False; } sub to_number { return XML::LibXML::Number->new($_[0]->value); } sub to_literal { return $_[0]; } sub string_value { return $_[0]->value; } 1; __END__ =head1 NAME XML::LibXML::Literal - Simple string values. =head1 DESCRIPTION In XPath terms a Literal is what we know as a string. =head1 API =head2 new($string) Create a new Literal object with the value in $string. Note that " and ' will be converted to " and ' respectively. That is not part of the XPath specification, but I consider it useful. Note though that you have to go to extraordinary lengths in an XML template file (be it XSLT or whatever) to make use of this: <xsl:value-of select=""I'm feeling &quot;sad&quot;""/> Which produces a Literal of: I'm feeling "sad" =head2 value() Also overloaded as stringification, simply returns the literal string value. =head2 cmp($literal) Returns the equivalent of perl's cmp operator against the given $literal. =cut