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package Wx::Perl::FSHandler::LWP; |
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=head1 NAME |
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C - file system handler based upon LWP |
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=head1 SYNOPSIS |
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my $ua = LWP::UserAgent->new; |
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# customize the User Agent, set proxy, supported protocols, ... |
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my $handler = Wx::Perl::FSHandler::LWP->new( $ua ); |
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Wx::FileSystem::AddHandler( $handler ); |
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=head1 DESCRIPTION |
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The C is a C |
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implementation based upon C, and is meant as a |
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superior replacement for C. |
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=cut |
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use Wx::FS; |
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use strict; |
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use base 'Wx::PlFileSystemHandler'; |
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use LWP::UserAgent; |
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use IO::Scalar; |
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our $VERSION = '0.03'; |
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=head2 new |
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my $handler = Wx::Perl::FSHandler::LWP->new( $ua ); |
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Creates a new instance. C<$ua> must be an object of class |
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C, which will be used to handle requests. |
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=cut |
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sub new { |
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my( $class, $ua ) = @_; |
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my $self = $class->SUPER::new; |
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$self->{user_agent} = $ua; |
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return $self; |
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} |
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=head2 CanOpen |
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Called internally by C. Calls C |
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on the user agent to determine if the location can be opened. |
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=cut |
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sub CanOpen { |
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my( $self, $location ) = @_; |
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my $uri = URI->new( $location ); |
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return $self->user_agent->is_protocol_supported( $uri->scheme ); |
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} |
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=head2 OpenFile |
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Called internally by C. Uses the user agent to fetch |
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the URL and returns a C representing the result. |
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=cut |
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sub OpenFile { |
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my( $self, $fs, $location ) = @_; |
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# work around bug in Wx::FileSystem: remove artificial '//' |
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if( index( $location, $fs->GetPath ) == 0 |
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&& substr( $location, length( $fs->GetPath ) - 1, 2 ) eq '//' ) { |
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substr $location, length( $fs->GetPath ) - 1, 2, '/'; |
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} |
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my $uri = URI->new( $location ); |
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my $request = HTTP::Request->new( 'GET', $uri ); |
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my $response = $self->user_agent->request( $request, undef ); |
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return undef unless $response->is_success; |
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my $value = $response->content; |
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my $fh = IO::Scalar->new( \$value ); |
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my $file = Wx::FSFile->new( $fh, $response->base, |
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scalar $response->content_type, |
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$uri->fragment || '' ); |
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return $file; |
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} |
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=head2 user_agent |
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my $ua = $handler->user_agent; |
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Returns the C object used to handle requests. |
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=cut |
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sub user_agent { $_[0]->{user_agent} } |
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=head1 ENVIRONMENTAL VARIABLES |
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See L. |
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111
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=head1 AUTHOR |
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113
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Mattia Barbon |
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=head1 LICENSE |
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Copyright (c) 2003, 2006 Mattia Barbon. |
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This package is free software; you can redistribute it and/or |
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modify it under the same terms as Perl itself. |
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=head1 SEE ALSO |
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L |
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wxFileSystem and wxFileSystemHandler in wxPerl documentation. |
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=cut |
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1; |