+++ /dev/null
-<?php
-/**
- * Provides DublinCore and CreativeCommons metadata
- *
- * Copyright 2004, Evan Prodromou <evan@wikitravel.org>.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
- *
- * @author Evan Prodromou <evan@wikitravel.org>
- * @file
- */
-
-abstract class RdfMetaData {
- const RDF_TYPE_PREFS = 'application/rdf+xml,text/xml;q=0.7,application/xml;q=0.5,text/rdf;q=0.1';
-
- /**
- * Constructor
- * @param $article Article object
- */
- public function __construct( Article $article ) {
- $this->mArticle = $article;
- }
-
- public abstract function show();
-
- /**
- *
- */
- protected function setup() {
- global $wgOut, $wgRequest;
-
- $httpaccept = isset( $_SERVER['HTTP_ACCEPT'] ) ? $_SERVER['HTTP_ACCEPT'] : null;
- $rdftype = wfNegotiateType( wfAcceptToPrefs( $httpaccept ), wfAcceptToPrefs( self::RDF_TYPE_PREFS ) );
-
- if( !$rdftype ){
- wfHttpError( 406, 'Not Acceptable', wfMsg( 'notacceptable' ) );
- return false;
- } else {
- $wgOut->disable();
- $wgRequest->response()->header( "Content-type: {$rdftype}; charset=utf-8" );
- $wgOut->sendCacheControl();
- return true;
- }
- }
-
- /**
- *
- */
- protected function reallyFullUrl() {
- return $this->mArticle->getTitle()->getFullURL();
- }
-
- protected function basics() {
- global $wgLanguageCode, $wgSitename;
-
- $this->element( 'title', $this->mArticle->mTitle->getText() );
- $this->pageOrString( 'publisher', wfMsg( 'aboutpage' ), $wgSitename );
- $this->element( 'language', $wgLanguageCode );
- $this->element( 'type', 'Text' );
- $this->element( 'format', 'text/html' );
- $this->element( 'identifier', $this->reallyFullUrl() );
- $this->element( 'date', $this->date( $this->mArticle->getTimestamp() ) );
-
- $lastEditor = User::newFromId( $this->mArticle->getUser() );
- $this->person( 'creator', $lastEditor );
-
- foreach( $this->mArticle->getContributors() as $user ){
- $this->person( 'contributor', $user );
- }
-
- $this->rights();
- }
-
- protected function element( $name, $value ) {
- $value = htmlspecialchars( $value );
- print "\t\t<dc:{$name}>{$value}</dc:{$name}>\n";
- }
-
- protected function date($timestamp) {
- return substr($timestamp, 0, 4) . '-'
- . substr($timestamp, 4, 2) . '-'
- . substr($timestamp, 6, 2);
- }
-
- protected function pageOrString( $name, $page, $str ) {
- if( $page instanceof Title )
- $nt = $page;
- else
- $nt = Title::newFromText( $page );
-
- if( !$nt || $nt->getArticleID() == 0 ){
- $this->element( $name, $str );
- } else {
- $this->page( $name, $nt );
- }
- }
-
- protected function page( $name, $title ) {
- $this->url( $name, $title->getFullUrl() );
- }
-
- protected function url($name, $url) {
- $url = htmlspecialchars( $url );
- print "\t\t<dc:{$name} rdf:resource=\"{$url}\" />\n";
- }
-
- protected function person( $name, User $user ) {
- if( $user->isAnon() ){
- $this->element( $name, wfMsgExt( 'anonymous', array( 'parsemag' ), 1 ) );
- } else {
- $real = $user->getRealName();
- if( $real ) {
- $this->element( $name, $real );
- } else {
- $userName = $user->getName();
- $this->pageOrString( $name, $user->getUserPage(), wfMsgExt( 'siteuser', 'parsemag', $userName, $userName ) );
- }
- }
- }
-
- /**
- * Takes an arg, for future enhancement with different rights for
- * different pages.
- */
- protected function rights() {
- global $wgRightsPage, $wgRightsUrl, $wgRightsText;
-
- if( $wgRightsPage && ( $nt = Title::newFromText( $wgRightsPage ) )
- && ($nt->getArticleID() != 0)) {
- $this->page('rights', $nt);
- } else if( $wgRightsUrl ){
- $this->url('rights', $wgRightsUrl);
- } else if( $wgRightsText ){
- $this->element( 'rights', $wgRightsText );
- }
- }
-
- protected function getTerms( $url ){
- global $wgLicenseTerms;
-
- if( $wgLicenseTerms ){
- return $wgLicenseTerms;
- } else {
- $known = $this->getKnownLicenses();
- if( isset( $known[$url] ) ) {
- return $known[$url];
- } else {
- return array();
- }
- }
- }
-
- protected function getKnownLicenses() {
- $ccLicenses = array('by', 'by-nd', 'by-nd-nc', 'by-nc',
- 'by-nc-sa', 'by-sa');
- $ccVersions = array('1.0', '2.0');
- $knownLicenses = array();
-
- foreach ($ccVersions as $version) {
- foreach ($ccLicenses as $license) {
- if( $version == '2.0' && substr( $license, 0, 2) != 'by' ) {
- # 2.0 dropped the non-attribs licenses
- continue;
- }
- $lurl = "http://creativecommons.org/licenses/{$license}/{$version}/";
- $knownLicenses[$lurl] = explode('-', $license);
- $knownLicenses[$lurl][] = 're';
- $knownLicenses[$lurl][] = 'di';
- $knownLicenses[$lurl][] = 'no';
- if (!in_array('nd', $knownLicenses[$lurl])) {
- $knownLicenses[$lurl][] = 'de';
- }
- }
- }
-
- /* Handle the GPL and LGPL, too. */
-
- $knownLicenses['http://creativecommons.org/licenses/GPL/2.0/'] =
- array('de', 're', 'di', 'no', 'sa', 'sc');
- $knownLicenses['http://creativecommons.org/licenses/LGPL/2.1/'] =
- array('de', 're', 'di', 'no', 'sa', 'sc');
- $knownLicenses['http://www.gnu.org/copyleft/fdl.html'] =
- array('de', 're', 'di', 'no', 'sa', 'sc');
-
- return $knownLicenses;
- }
-}
-
-class DublinCoreRdf extends RdfMetaData {
-
- public function show(){
- if( $this->setup() ){
- $this->prologue();
- $this->basics();
- $this->epilogue();
- }
- }
-
- /**
- * begin of the page
- */
- protected function prologue() {
- global $wgOutputEncoding;
-
- $url = htmlspecialchars( $this->reallyFullUrl() );
- print <<<PROLOGUE
-<?xml version="1.0" encoding="{$wgOutputEncoding}" ?>
-<!DOCTYPE rdf:RDF PUBLIC "-//DUBLIN CORE//DCMES DTD 2002/07/31//EN" "http://dublincore.org/documents/2002/07/31/dcmes-xml/dcmes-xml-dtd.dtd">
-<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
- xmlns:dc="http://purl.org/dc/elements/1.1/">
- <rdf:Description rdf:about="{$url}">
-
-PROLOGUE;
- }
-
- /**
- * end of the page
- */
- protected function epilogue() {
- print <<<EPILOGUE
- </rdf:Description>
-</rdf:RDF>
-EPILOGUE;
- }
-}
-
-class CreativeCommonsRdf extends RdfMetaData {
-
- public function show(){
- if( $this->setup() ){
- global $wgRightsUrl;
-
- $url = $this->reallyFullUrl();
-
- $this->prologue();
- $this->subPrologue('Work', $url);
-
- $this->basics();
- if( $wgRightsUrl ){
- $url = htmlspecialchars( $wgRightsUrl );
- print "\t\t<cc:license rdf:resource=\"$url\" />\n";
- }
-
- $this->subEpilogue('Work');
-
- if( $wgRightsUrl ){
- $terms = $this->getTerms( $wgRightsUrl );
- if( $terms ){
- $this->subPrologue( 'License', $wgRightsUrl );
- $this->license( $terms );
- $this->subEpilogue( 'License' );
- }
- }
- }
-
- $this->epilogue();
- }
-
- protected function prologue() {
- global $wgOutputEncoding;
- echo <<<PROLOGUE
-<?xml version='1.0' encoding="{$wgOutputEncoding}" ?>
-<rdf:RDF xmlns:cc="http://web.resource.org/cc/"
- xmlns:dc="http://purl.org/dc/elements/1.1/"
- xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
-
-PROLOGUE;
- }
-
- protected function subPrologue( $type, $url ){
- $url = htmlspecialchars( $url );
- echo "\t<cc:{$type} rdf:about=\"{$url}\">\n";
- }
-
- protected function subEpilogue($type) {
- echo "\t</cc:{$type}>\n";
- }
-
- protected function license($terms) {
-
- foreach( $terms as $term ){
- switch( $term ) {
- case 're':
- $this->term('permits', 'Reproduction'); break;
- case 'di':
- $this->term('permits', 'Distribution'); break;
- case 'de':
- $this->term('permits', 'DerivativeWorks'); break;
- case 'nc':
- $this->term('prohibits', 'CommercialUse'); break;
- case 'no':
- $this->term('requires', 'Notice'); break;
- case 'by':
- $this->term('requires', 'Attribution'); break;
- case 'sa':
- $this->term('requires', 'ShareAlike'); break;
- case 'sc':
- $this->term('requires', 'SourceCode'); break;
- }
- }
- }
-
- protected function term( $term, $name ){
- print "\t\t<cc:{$term} rdf:resource=\"http://web.resource.org/cc/{$name}\" />\n";
- }
-
- protected function epilogue() {
- echo "</rdf:RDF>\n";
- }
-}
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