--- /dev/null
+<?php
+/**
+ * (C) 2019 Kunal Mehta <legoktm@member.fsf.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.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+
+require_once __DIR__ . '/Maintenance.php';
+
+/**
+ * Checks dependencies for extensions, mostly without loading them
+ *
+ * @since 1.34
+ */
+class CheckDependencies extends Maintenance {
+
+ private $checkDev;
+
+ public function __construct() {
+ parent::__construct();
+ $this->addDescription( 'Check dependencies for extensions' );
+ $this->addOption( 'extensions', 'Comma separated list of extensions to check', false, true );
+ $this->addOption( 'skins', 'Comma separated list of skins to check', false, true );
+ $this->addOption( 'json', 'Output in JSON' );
+ $this->addOption( 'dev', 'Check development dependencies too' );
+ }
+
+ public function execute() {
+ $this->checkDev = $this->hasOption( 'dev' );
+ $extensions = $this->hasOption( 'extensions' )
+ ? explode( ',', $this->getOption( 'extensions' ) )
+ : [];
+ $skins = $this->hasOption( 'skins' )
+ ? explode( ',', $this->getOption( 'skins' ) )
+ : [];
+
+ $dependencies = [];
+ // Note that we can only use the main registry if we are
+ // not checking development dependencies.
+ $registry = ExtensionRegistry::getInstance();
+ foreach ( $extensions as $extension ) {
+ if ( !$this->checkDev && $registry->isLoaded( $extension ) ) {
+ // If it's already loaded, we know all the dependencies resolved.
+ $this->addToDependencies( $dependencies, [ $extension ], [] );
+ continue;
+ }
+ $this->loadThing( $dependencies, $extension, [ $extension ], [] );
+ }
+
+ foreach ( $skins as $skin ) {
+ if ( !$this->checkDev && $registry->isLoaded( $skin ) ) {
+ // If it's already loaded, we know all the dependencies resolved.
+ $this->addToDependencies( $dependencies, [], [ $skin ] );
+ continue;
+ }
+ $this->loadThing( $dependencies, $skin, [], [ $skin ] );
+ }
+
+ if ( $this->hasOption( 'json' ) ) {
+ $this->output( json_encode( $dependencies ) . "\n" );
+ } else {
+ $this->output( $this->formatForHumans( $dependencies ) . "\n" );
+ }
+ }
+
+ private function loadThing( &$dependencies, $name, $extensions, $skins ) {
+ global $wgExtensionDirectory, $wgStyleDirectory;
+ $queue = [];
+ $missing = false;
+ foreach ( $extensions as $extension ) {
+ $path = "$wgExtensionDirectory/$extension/extension.json";
+ if ( file_exists( $path ) ) {
+ // 1 is ignored
+ $queue[$path] = 1;
+ $this->addToDependencies( $dependencies, [ $extension ], [], $name );
+ } else {
+ $missing = true;
+ $this->addToDependencies( $dependencies, [ $extension ], [], $name, 'missing' );
+ }
+ }
+
+ foreach ( $skins as $skin ) {
+ $path = "$wgStyleDirectory/$skin/skin.json";
+ if ( file_exists( $path ) ) {
+ $queue[$path] = 1;
+ $this->addToDependencies( $dependencies, [], [ $skin ], $name );
+ } else {
+ $missing = true;
+ $this->addToDependencies( $dependencies, [], [ $skin ], $name, 'missing' );
+ }
+ }
+
+ if ( $missing ) {
+ // Stuff is missing, give up
+ return;
+ }
+
+ $registry = new ExtensionRegistry();
+ $registry->setCheckDevRequires( $this->checkDev );
+ try {
+ $registry->readFromQueue( $queue );
+ } catch ( ExtensionDependencyError $e ) {
+ $reason = false;
+ if ( $e->incompatibleCore ) {
+ $reason = 'incompatible-core';
+ } elseif ( $e->incompatibleSkins ) {
+ $reason = 'incompatible-skins';
+ } elseif ( $e->incompatibleExtensions ) {
+ $reason = 'incompatible-extensions';
+ } elseif ( $e->missingExtensions || $e->missingSkins ) {
+ // There's an extension missing in the dependency tree,
+ // so add those to the dependency list and try again
+ return $this->loadThing(
+ $dependencies,
+ $name,
+ array_merge( $extensions, $e->missingExtensions ),
+ array_merge( $skins, $e->missingSkins )
+ );
+ } else {
+ // missing-phpExtension
+ // missing-ability
+ // XXX: ???
+ throw $e;
+ }
+
+ $this->addToDependencies( $dependencies, $extensions, $skins, $name, $reason, $e->getMessage() );
+ }
+
+ $this->addToDependencies( $dependencies, $extensions, $skins, $name );
+ }
+
+ private function addToDependencies( &$dependencies, $extensions, $skins,
+ $why = null, $status = null, $message = null
+ ) {
+ $mainRegistry = ExtensionRegistry::getInstance();
+ $iter = [ 'extensions' => $extensions, 'skins' => $skins ];
+ foreach ( $iter as $type => $things ) {
+ foreach ( $things as $thing ) {
+ $preStatus = $dependencies[$type][$thing]['status'] ?? false;
+ if ( $preStatus !== 'loaded' ) {
+ // OK to overwrite
+ if ( $status ) {
+ $tStatus = $status;
+ } else {
+ $tStatus = $mainRegistry->isLoaded( $thing ) ? 'loaded' : 'present';
+ }
+ $dependencies[$type][$thing]['status'] = $tStatus;
+ }
+ if ( $why !== null ) {
+ $dependencies[$type][$thing]['why'][] = $why;
+ // XXX: this is a bit messy
+ $dependencies[$type][$thing]['why'] = array_unique(
+ $dependencies[$type][$thing]['why'] );
+ }
+
+ if ( $message !== null ) {
+ $dependencies[$type][$thing]['message'] = trim( $message );
+ }
+
+ }
+ }
+ }
+
+ private function formatForHumans( $dependencies ) {
+ $text = '';
+ foreach ( $dependencies as $type => $things ) {
+ $text .= ucfirst( $type ) . "\n" . str_repeat( '=', strlen( $type ) ) . "\n";
+ foreach ( $things as $thing => $info ) {
+ $why = $info['why'] ?? [];
+ if ( $why ) {
+ $whyText = '(because: ' . implode( ',', $why ) . ') ';
+ } else {
+ $whyText = '';
+ }
+ $msg = isset( $info['message'] ) ? ", {$info['message']}" : '';
+
+ $text .= "$thing: {$info['status']}{$msg} $whyText\n";
+ }
+ $text .= "\n";
+ }
+
+ return trim( $text );
+ }
+}
+
+$maintClass = CheckDependencies::class;
+require_once RUN_MAINTENANCE_IF_MAIN;