<?php
-/* Metadata.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
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ *
+ * @author Evan Prodromou <evan@wikitravel.org>
+ * @file
*/
-define("RDF_TYPE_PREFS", "application/rdf+xml,text/xml;q=0.7,application/xml;q=0.5,text/rdf;q=0.1");
-
-function wfDublinCoreRdf($article) {
-
- $url = dcReallyFullUrl($article->mTitle);
-
- if (rdfSetup()) {
- dcPrologue($url);
- dcBasics($article);
- dcEpilogue();
- }
-}
-
-function wfCreativeCommonsRdf($article) {
-
- if (rdfSetup()) {
- global $wgRightsUrl;
-
- $url = dcReallyFullUrl($article->mTitle);
-
- ccPrologue();
- ccSubPrologue('Work', $url);
- dcBasics($article);
- if (isset($wgRightsUrl)) {
- print " <cc:license rdf:resource=\"$wgRightsUrl\" />\n";
- }
-
- ccSubEpilogue('Work');
-
- if (isset($wgRightsUrl)) {
- $terms = ccGetTerms($wgRightsUrl);
- if ($terms) {
- ccSubPrologue('License', $wgRightsUrl);
- ccLicense($terms);
- ccSubEpilogue('License');
- }
- }
- }
-
- ccEpilogue();
-}
-
-/* private */ function rdfSetup() {
- global $wgOut, $wgRdfMimeType, $_SERVER;
-
- $rdftype = wfNegotiateType(wfAcceptToPrefs($_SERVER['HTTP_ACCEPT']), wfAcceptToPrefs(RDF_TYPE_PREFS));
-
- if (!$rdftype) {
- wfHttpError(406, "Not Acceptable", wfMsg("notacceptable"));
- return false;
- } else {
- $wgOut->disable();
- header( "Content-type: {$rdftype}" );
- $wgOut->sendCacheControl();
- return true;
- }
-}
-
-/* private */ function dcPrologue($url) {
- global $wgOutputEncoding;
-
- print "<?xml version=\"1.0\" encoding=\"{$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=\"$url\">
-";
-}
-
-/* private */ function dcEpilogue() {
- print "
- </rdf:Description>
-</rdf:RDF>
-";
-}
-
-/* private */ function dcBasics($article) {
- global $wgLanguageCode, $wgSitename;
-
- dcElement('title', $article->mTitle->getText());
- dcPageOrString('publisher', wfMsg('aboutpage'), $wgSitename);
- dcElement('language', $wgLanguageCode);
- dcElement('type', 'Text');
- dcElement('format', 'text/html');
- dcElement('identifier', dcReallyFullUrl($article->mTitle));
- dcElement('date', dcDate($article->getTimestamp()));
- dcPerson('creator', $article->getUser());
-
- $contributors = dcContributors($article->mTitle);
-
- foreach ($contributors as $cid) {
- dcPerson('contributor', $cid);
- }
-
- dcRights($article);
-}
-
-/* private */ function ccPrologue() {
- global $wgOutputEncoding;
-
- echo "<?xml version='1.0' encoding='{$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#\">
-";
-}
-
-/* private */ function ccSubPrologue($type, $url) {
- echo " <cc:{$type} rdf:about=\"{$url}\">\n";
-}
-
-/* private */ function ccSubEpilogue($type) {
- echo " </cc:{$type}>\n";
-}
-
-/* private */ function ccLicense($terms) {
-
- foreach ($terms as $term) {
- switch ($term) {
- case 're':
- ccTerm('permits', "Reproduction"); break;
- case 'di':
- ccTerm('permits', "Distribution"); break;
- case 'de':
- ccTerm('permits', "DerivativeWorks"); break;
- case 'nc':
- ccTerm('prohibits', "CommercialUse"); break;
- case 'no':
- ccTerm('requires', "Notice"); break;
- case 'by':
- ccTerm('requires', "Attribution"); break;
- case 'sa':
- ccTerm('requires', "ShareAlike"); break;
- case 'sc':
- ccTerm('requires', "SourceCode"); break;
- }
- }
-}
-
-/* private */ function ccTerm($term, $name) {
- print " <cc:{$term} rdf:resource=\"http://web.resource.org/cc/{$name}\" />\n";
-}
-
-/* private */ function ccEpilogue() {
- echo "</rdf:RDF>\n";
-}
-
-/* private */ function dcElement($name, $value) {
- print " <dc:{$name}>{$value}</dc:{$name}>\n";
-}
-
-/* private */ function dcDate($timestamp) {
- return substr($timestamp, 0, 4) . "-"
- . substr($timestamp, 4, 2) . "-"
- . substr($timestamp, 6, 2);
-}
-
-/* private */ function dcReallyFullUrl($title) {
- $title->getFullURL();
-}
-
-/* private */ function dcPageOrString($name, $page, $str) {
- $nt = Title::newFromText($page);
-
- if (!$nt || $nt->getArticleID() == 0) {
- dcElement($name, $str);
- } else {
- dcPage($name, $nt);
- }
-}
-
-/* private */ function dcPage($name, $title) {
- dcUrl($name, dcReallyFullUrl($title));
-}
-
-/* private */ function dcUrl($name, $url) {
- print " <dc:{$name} rdf:resource=\"{$url}\" />\n";
-}
-
-/* private */ function dcPerson($name, $id) {
- global $wgLang;
-
- if ($id == 0) {
- dcElement($name, wfMsg("anonymous"));
- } else {
- $user_name = User::whoIs($id);
- dcPageOrString($name, $wgLang->getNsText(NS_USER) . ":" . $user_name, $user_name);
- }
-}
-
-/* private */ function dcContributors($title) {
-
- $contribs = array();
-
- $res = wfQuery("SELECT DISTINCT old_user" .
- " FROM old " .
- " WHERE old_namespace = " . $title->getNamespace() .
- " AND old_title = '" . $title->getDBkey() . "'", DB_READ);
-
- while ( $line = wfFetchObject( $res ) ) {
- $contribs[] = $line->old_user;
- }
-
- return $contribs;
-}
-
-/* Takes an arg, for future enhancement with different rights for
- different pages. */
-
-/* private */ function dcRights($article) {
-
- global $wgRightsPage, $wgRightsUrl, $wgRightsText;
-
- if (isset($wgRightsPage) &&
- ($nt = Title::newFromText($wgRightsPage))
- && ($nt->getArticleID() != 0)) {
- dcPage('rights', $nt);
- } else if (isset($wgRightsUrl)) {
- dcUrl('rights', $wgRightsUrl);
- } else if (isset($wgRightsText)) {
- dcElement('rights', $wgRightsText);
- }
-}
-
-/* private */ function ccGetTerms($url) {
- global $wgLicenseTerms;
-
- if (isset($wgLicenseTerms)) {
- return $wgLicenseTerms;
- } else {
- $known = getKnownLicenses();
- return $known[$url];
- }
-}
-
-/* private */ function getKnownLicenses() {
-
- $ccLicenses = array('by', 'by-nd', 'by-nd-nc', 'by-nc',
- 'by-nc-sa', 'by-sa', 'nd', 'nd-nc',
- 'nc', 'nc-sa', 'sa');
-
- $knownLicenses = array();
-
- foreach ($ccLicenses as $license) {
- $lurl = "http://creativecommons.org/licenses/{$license}/1.0/";
- $knownLicenses[$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;
+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( Page $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 ){
+ throw new HttpError( 406, wfMessage( 'notacceptable' ) );
+ }
+
+ $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->getTitle()->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 );
+ }
+ }
+
+ /**
+ * @param $name string
+ * @param $title Title
+ */
+ 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);
+ } elseif( $wgRightsUrl ){
+ $this->url('rights', $wgRightsUrl);
+ } elseif( $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;
+ }
}
-?>
dépôts / lhc / web / wiklou.git / blobdiff