Extract and show license key

List of available licenses is pre-extracted from UploadWizard
MediaWiki extension. This should eventually be switched to use
some live query to the site configuration.

The license display is more or less localizable, for known templates.
Unrecognized templates specified as parameters to {{self}} will be
recognized (unlocalized) but others may not be.

Change-Id: I9df5fe807798a191a3bb0a45464760c75f19e366

update-license-info/Makefile

@@ -0,0 +1,14 @@
+.FAKE : build update clean install
+
+build : ../commons/res/xml/wikimedia_licenses.xml
+
+../commons/res/xml/wikimedia_licenses.xml : licenses.php mediawiki-extensions-UploadWizard
+	php licenses.php > ../commons/res/xml/wikimedia_licenses.xml
+
+mediawiki-extensions-UploadWizard : update
+
+update :
+	if [ -d mediawiki-extensions-UploadWizard ]; then (cd mediawiki-extensions-UploadWizard && git pull origin master); else git clone https://gerrit.wikimedia.org/r/mediawiki/extensions/UploadWizard mediawiki-extensions-UploadWizard; fi
+
+clean :
+	rm -rf mediawiki-extensions-UploadWizard

update-license-info/include-stubs.php

@@ -0,0 +1,68 @@
+<?php
+
+// Stubs for enough of the MediaWiki environment to run UploadWizard.config.php
+
+global $wgFileExtensions, $wgServer, $wgScriptPath, $wgAPIModules, $wgMaxUploadSize, $wgLang, $wgMemc, $wgUploadWizardConfig;
+
+class FakeLang {
+	function getCode() {
+		return 'en';
+	}
+}
+$wgLang = new FakeLang();
+
+function wfMemcKey() {
+	return 'fake-key';
+}
+
+class FakeMemc {
+	function get() {
+		return array( 'en' => 'English' );
+	}
+}
+$wgMemc = new FakeMemc();
+
+class FakeMessage {
+	function plain() {
+		return 'stub-message-plain';
+	}
+	function parse() {
+		return 'stub-message-parsed';
+	}
+}
+
+function wfMessage() {
+	return new FakeMessage();
+}
+
+/**
+ * Converts shorthand byte notation to integer form
+ *
+ * @param $string String
+ * @return Integer
+ */
+function wfShorthandToInteger( $string = '' ) {
+	$string = trim( $string );
+	if ( $string === '' ) {
+		return -1;
+	}
+	$last = $string[strlen( $string ) - 1];
+	$val = intval( $string );
+	switch ( $last ) {
+		case 'g':
+		case 'G':
+			$val *= 1024;
+			// break intentionally missing
+		case 'm':
+		case 'M':
+			$val *= 1024;
+			// break intentionally missing
+		case 'k':
+		case 'K':
+			$val *= 1024;
+	}
+
+	return $val;
+}
+
+$wgAPIModules = array();

update-license-info/licenses.php

@@ -0,0 +1,71 @@
+<?php
+
+// Quick hack to extract default license list from UploadWizard configuration.
+// In future, try to export this info via the API on wiki so we can pull dynamically.
+//
+// Brion Vibber <brion@pobox.com>
+// 2013-09-30
+
+require 'include-stubs.php';
+$config = require "mediawiki-extensions-UploadWizard/UploadWizard.config.php";
+require "mediawiki-extensions-UploadWizard/UploadWizard.i18n.php";
+$licenseList = array();
+
+foreach ( $config['licenses'] as $key => $license ) {
+	// Determine template -> license mappings
+	if ( isset( $license['templates'] ) ) {
+		$templates = $license['templates'];
+	} else {
+		$templates = array( $key );
+	}
+	
+	if ( count( $templates ) < 1 ) {
+		throw new Exception("No templates for $key, this is wrong.");
+	}
+	if ( count( $templates ) > 1 ) {
+		//echo "Skipping multi-template license: $key\n";
+		continue;
+	}
+	$template = $templates[0];
+	if ( preg_match( '/^subst:/i', $template ) ) {
+		//echo "Skipping subst license: $key\n";
+		continue;
+	}
+
+	$msg = $messages['en'][$license['msg']];
+
+	$licenseInfo = array(
+		'desc' => $msg,
+		'template' => $template
+	);
+	if ( isset( $license['url'] ) ) {
+		$url = $license['url'];
+		if ( substr( $url, 0, 2 ) == '//' ) {
+			$url = 'https:' . $url;
+		}
+		if ( isset( $license['languageCodePrefix'] ) ) {
+			$url .= $license['languageCodePrefix'] . '$lang';
+		}
+		$licenseInfo['url'] = $url;
+	}
+	$licenseList[$key] = $licenseInfo;
+}
+
+//var_dump( $licenseList );
+
+echo "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n";
+echo "<licenses xmlns=\"https://www.mediawiki.org/wiki/Extension:UploadWizard/xmlns/licenses\">\n";
+foreach( $licenseList as $key => $licenseInfo ) {
+	$encId = htmlspecialchars( $key );
+	echo "  <license id=\"$encId\"";
+	$encTemplate = htmlspecialchars( $licenseInfo['template'] );
+	echo " template=\"$encTemplate\"";
+	if ( isset( $licenseInfo['url'] ) ) {
+		$encUrl = htmlspecialchars( $licenseInfo['url'] );
+		echo " url=\"$encUrl\"";
+	}
+	echo "/>\n";
+	
+}
+echo "</licenses>\n";
+