From: Evan Prodromou Date: Mon, 5 Apr 2004 04:38:13 +0000 (+0000) Subject: Forgot to add this file. X-Git-Tag: 1.3.0beta1~593 X-Git-Url: http://git.cyclocoop.org/%22.%24info%5B?a=commitdiff_plain;h=f9eb13cbd90de0da6d8b006492c8cc9167bf40af;p=lhc%2Fweb%2Fwiklou.git Forgot to add this file. --- diff --git a/includes/Metadata.php b/includes/Metadata.php new file mode 100644 index 0000000000..b435284d05 --- /dev/null +++ b/includes/Metadata.php @@ -0,0 +1,289 @@ +. + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +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($wgRightsUrl)) { + print " \n"; + } + + ccSubEpilogue('Work'); + + if (isset($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 $wgOutputEncoding; + + print " + + + + + +"; +} + +/* private */ function dcEpilogue() { + print " + + +"; +} + +/* private */ function dcBasics($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 $wgOutputEncoding; + + echo " + + +"; +} + +/* private */ function ccSubPrologue($type, $url) { + echo " \n"; +} + +/* private */ function ccSubEpilogue($type) { + echo " \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, $name) { + print " \n"; +} + +/* private */ function ccEpilogue() { + echo "\n"; +} + +/* private */ function dcElement($name, $value) { + print " {$value}\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, $url) { + print " \n"; +} + +/* private */ function dcPerson($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; +} + +?>