MediaWiki 1.7.1 wiederhergestellt

1 files changed, 362 insertions, 0 deletions

diff --git a/includes/Metadata.php b/includes/Metadata.php
new file mode 100644
index 00000000..af40ab21
--- /dev/null
+++ b/includes/Metadata.php
@@ -0,0 +1,362 @@
+<?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
+ *  (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>
+ * @package MediaWiki
+ */
+
+/**
+ *
+ */
+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)) {
+			$url = htmlspecialchars( $wgRightsUrl );
+			print "    <cc:license rdf:resource=\"$url\" />\n";
+		}
+
+		ccSubEpilogue('Work');
+
+		if (isset($wgRightsUrl)) {
+			$terms = ccGetTerms($wgRightsUrl);
+			if ($terms) {
+				ccSubPrologue('License', $wgRightsUrl);
+				ccLicense($terms);
+				ccSubEpilogue('License');
+			}
+		}
+	}
+
+	ccEpilogue();
+}
+
+/**
+ * @private
+ */
+function rdfSetup() {
+	global $wgOut, $_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;
+
+	$url = htmlspecialchars( $url );
+	print "<" . "?xml version=\"1.0\" encoding=\"{$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 $wgContLanguageCode, $wgSitename;
+
+	dcElement('title', $article->mTitle->getText());
+	dcPageOrString('publisher', wfMsg('aboutpage'), $wgSitename);
+	dcElement('language', $wgContLanguageCode);
+	dcElement('type', 'Text');
+	dcElement('format', 'text/html');
+	dcElement('identifier', dcReallyFullUrl($article->mTitle));
+	dcElement('date', dcDate($article->getTimestamp()));
+
+	$last_editor = $article->getUser();
+
+	if ($last_editor == 0) {
+		dcPerson('creator', 0);
+	} else {
+		dcPerson('creator', $last_editor, $article->getUserText(),
+				 User::whoIsReal($last_editor));
+	}
+
+	$contributors = $article->getContributors();
+
+	foreach ($contributors as $user_parts) {
+		dcPerson('contributor', $user_parts[0], $user_parts[1], $user_parts[2]);
+	}
+
+	dcRights($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) {
+	$url = htmlspecialchars( $url );
+	echo "  <cc:{$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) {
+	$value = htmlspecialchars( $value );
+	print "    <dc:{$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) {
+	return $title->getFullURL();
+}
+
+/**
+ * @private
+ */
+function dcPageOrString($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) {
+	$url = htmlspecialchars( $url );
+	print "    <dc:{$name} rdf:resource=\"{$url}\" />\n";
+}
+
+/**
+ * @private
+ */
+function dcPerson($name, $id, $user_name='', $user_real_name='') {
+	global $wgContLang;
+
+	if ($id == 0) {
+		dcElement($name, wfMsg('anonymous'));
+	} else if ( !empty($user_real_name) ) {
+		dcElement($name, $user_real_name);
+	} else {
+		# XXX: This shouldn't happen.
+		if( empty( $user_name ) ) {
+			$user_name = User::whoIs($id);
+		}
+		dcPageOrString($name, $wgContLang->getNsText(NS_USER) . ':' . $user_name, wfMsg('siteuser', $user_name));
+	}
+}
+
+/**
+ * Takes an arg, for future enhancement with different rights for
+ * different pages.
+ * @private
+ */
+function dcRights($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');
+	$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;
+}
+
+?>