]> scripts.mit.edu Git - autoinstallsdev/mediawiki.git/blobdiff - maintenance/language/checkLanguage.inc
MediaWiki 1.30.2
[autoinstallsdev/mediawiki.git] / maintenance / language / checkLanguage.inc
index 468db5500f388e2fd4a4a7072bc2fb2d38e5d91b..9e9fd3eeec40ad2d7eb57a19b704cb3c049b3d42 100644 (file)
 <?php
 /**
- * Check a language.
+ * Helper class for checkLanguage.php script.
  *
- * @param $languages The languages object.
- * @param $code The language code (default content language of the wiki running the script on).
- * @param: $links Show wiki links to messages (default false)?
- * @param: $wikiLanguage Language of the wiki to show the output in, if showing links (default en).
- * @param: $checks Checks to do (default all except for duplicates and plural).
- * @return Number of errors found.
+ * 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
+ * @ingroup MaintenanceLanguage
+ */
+
+/**
+ * @ingroup MaintenanceLanguage
  */
-function checkLanguage( $languages, $code = null, $displayLevel = 2, $links = false, $wikiLanguage = 'en', $checks = null ) {
-       # Get messages
-       $messages = $languages->getMessages( $code );
-       $messagesNumber = count( $messages['translated'] );
+class CheckLanguageCLI {
+       protected $code = null;
+       protected $level = 2;
+       protected $doLinks = false;
+       protected $linksPrefix = '';
+       protected $wikiCode = 'en';
+       protected $checkAll = false;
+       protected $output = 'plain';
+       protected $checks = [];
+       protected $L = null;
+
+       protected $results = [];
+
+       private $includeExif = false;
+
+       /**
+        * @param array $options Options for script.
+        */
+       public function __construct( array $options ) {
+               if ( isset( $options['help'] ) ) {
+                       echo $this->help();
+                       exit( 1 );
+               }
+
+               if ( isset( $options['lang'] ) ) {
+                       $this->code = $options['lang'];
+               } else {
+                       global $wgLanguageCode;
+                       $this->code = $wgLanguageCode;
+               }
+
+               if ( isset( $options['level'] ) ) {
+                       $this->level = $options['level'];
+               }
 
-       # Skip the checks if told so
-       if ( $displayLevel == 0 ) {
-               return;
+               $this->doLinks = isset( $options['links'] );
+               $this->includeExif = !isset( $options['noexif'] );
+               $this->checkAll = isset( $options['all'] );
+
+               if ( isset( $options['prefix'] ) ) {
+                       $this->linksPrefix = $options['prefix'];
+               }
+
+               if ( isset( $options['wikilang'] ) ) {
+                       $this->wikiCode = $options['wikilang'];
+               }
+
+               if ( isset( $options['whitelist'] ) ) {
+                       $this->checks = explode( ',', $options['whitelist'] );
+               } elseif ( isset( $options['blacklist'] ) ) {
+                       $this->checks = array_diff(
+                               isset( $options['easy'] ) ? $this->easyChecks() : $this->defaultChecks(),
+                               explode( ',', $options['blacklist'] )
+                       );
+               } elseif ( isset( $options['easy'] ) ) {
+                       $this->checks = $this->easyChecks();
+               } else {
+                       $this->checks = $this->defaultChecks();
+               }
+
+               if ( isset( $options['output'] ) ) {
+                       $this->output = $options['output'];
+               }
+
+               $this->L = new Languages( $this->includeExif );
        }
 
-       # Initialize counts
-       $problems = 0;
+       /**
+        * Get the default checks.
+        * @return array A list of the default checks.
+        */
+       protected function defaultChecks() {
+               return [
+                       'untranslated', 'duplicate', 'obsolete', 'variables', 'empty', 'plural',
+                       'whitespace', 'xhtml', 'chars', 'links', 'unbalanced', 'namespace',
+                       'projecttalk', 'magic', 'magic-old', 'magic-over', 'magic-case',
+                       'special', 'special-old',
+               ];
+       }
 
-       # Set default language code and checks
-       if ( !$code ) {
-               global $wgContLang;
-               $code = $wgContLang->getCode();
+       /**
+        * Get the checks which check other things than messages.
+        * @return array A list of the non-message checks.
+        */
+       protected function nonMessageChecks() {
+               return [
+                       'namespace', 'projecttalk', 'magic', 'magic-old', 'magic-over',
+                       'magic-case', 'special', 'special-old',
+               ];
        }
-       if ( !$checks ) {
-               $checks = array( 'untranslated', 'obsolete', 'variables', 'empty', 'whitespace', 'xhtml', 'chars' );
+
+       /**
+        * Get the checks that can easily be treated by non-speakers of the language.
+        * @return array A list of the easy checks.
+        */
+       protected function easyChecks() {
+               return [
+                       'duplicate', 'obsolete', 'empty', 'whitespace', 'xhtml', 'chars', 'magic-old',
+                       'magic-over', 'magic-case', 'special-old',
+               ];
        }
 
-       # Untranslated messages
-       if ( in_array( 'untranslated', $checks ) ) {
-               $generalMessages = $languages->getGeneralMessages();
-               $requiredMessagesNumber = count( $generalMessages['required'] );
-               $untranslatedMessages = $languages->getUntranslatedMessages( $code );
-               $untranslatedMessagesNumber = count( $untranslatedMessages );
-               $languages->outputMessagesList( $untranslatedMessages, $code, "\n$untranslatedMessagesNumber messages of $requiredMessagesNumber are not translated to $code, but exist in en:", $displayLevel, $links, $wikiLanguage );
-               $problems += $untranslatedMessagesNumber;
+       /**
+        * Get all checks.
+        * @return array An array of all check names mapped to their function names.
+        */
+       protected function getChecks() {
+               return [
+                       'untranslated' => 'getUntranslatedMessages',
+                       'duplicate' => 'getDuplicateMessages',
+                       'obsolete' => 'getObsoleteMessages',
+                       'variables' => 'getMessagesWithMismatchVariables',
+                       'plural' => 'getMessagesWithoutPlural',
+                       'empty' => 'getEmptyMessages',
+                       'whitespace' => 'getMessagesWithWhitespace',
+                       'xhtml' => 'getNonXHTMLMessages',
+                       'chars' => 'getMessagesWithWrongChars',
+                       'links' => 'getMessagesWithDubiousLinks',
+                       'unbalanced' => 'getMessagesWithUnbalanced',
+                       'namespace' => 'getUntranslatedNamespaces',
+                       'projecttalk' => 'getProblematicProjectTalks',
+                       'magic' => 'getUntranslatedMagicWords',
+                       'magic-old' => 'getObsoleteMagicWords',
+                       'magic-over' => 'getOverridingMagicWords',
+                       'magic-case' => 'getCaseMismatchMagicWords',
+                       'special' => 'getUntraslatedSpecialPages',
+                       'special-old' => 'getObsoleteSpecialPages',
+               ];
        }
 
-       # Duplicate messages
-       if ( in_array( 'duplicate', $checks ) ) {
-               $duplicateMessages = $languages->getDuplicateMessages( $code );
-               $duplicateMessagesNumber = count( $duplicateMessages );
-               $languages->outputMessagesList( $duplicateMessages, $code, "\n$duplicateMessagesNumber messages of $messagesNumber are translated the same in en and $code:", $displayLevel, $links, $wikiLanguage );
-               $problems += $duplicateMessagesNumber;
+       /**
+        * Get total count for each check non-messages check.
+        * @return array An array of all check names mapped to a two-element array:
+        * function name to get the total count and language code or null
+        * for checked code.
+        */
+       protected function getTotalCount() {
+               return [
+                       'namespace' => [ 'getNamespaceNames', 'en' ],
+                       'projecttalk' => null,
+                       'magic' => [ 'getMagicWords', 'en' ],
+                       'magic-old' => [ 'getMagicWords', null ],
+                       'magic-over' => [ 'getMagicWords', null ],
+                       'magic-case' => [ 'getMagicWords', null ],
+                       'special' => [ 'getSpecialPageAliases', 'en' ],
+                       'special-old' => [ 'getSpecialPageAliases', null ],
+               ];
        }
 
-       # Obsolete messages
-       if ( in_array( 'obsolete', $checks ) ) {
-               $obsoleteMessages = $messages['obsolete'];
-               $obsoleteMessagesNumber = count( $obsoleteMessages );
-               $languages->outputMessagesList( $obsoleteMessages, $code, "\n$obsoleteMessagesNumber messages of $messagesNumber do not exist in en (or are in the ignored list), but still exist in $code:", $displayLevel, $links, $wikiLanguage );
-               $problems += $obsoleteMessagesNumber;
+       /**
+        * Get all check descriptions.
+        * @return array An array of all check names mapped to their descriptions.
+        */
+       protected function getDescriptions() {
+               return [
+                       'untranslated' => '$1 message(s) of $2 are not translated to $3, but exist in en:',
+                       'duplicate' => '$1 message(s) of $2 are translated the same in en and $3:',
+                       'obsolete' =>
+                               '$1 message(s) of $2 do not exist in en or are in the ignore list, but exist in $3:',
+                       'variables' => '$1 message(s) of $2 in $3 don\'t match the variables used in en:',
+                       'plural' => '$1 message(s) of $2 in $3 don\'t use {{plural}} while en uses:',
+                       'empty' => '$1 message(s) of $2 in $3 are empty or -:',
+                       'whitespace' => '$1 message(s) of $2 in $3 have trailing whitespace:',
+                       'xhtml' => '$1 message(s) of $2 in $3 contain illegal XHTML:',
+                       'chars' =>
+                               '$1 message(s) of $2 in $3 include hidden chars which should not be used in the messages:',
+                       'links' => '$1 message(s) of $2 in $3 have problematic link(s):',
+                       'unbalanced' => '$1 message(s) of $2 in $3 have unbalanced {[]}:',
+                       'namespace' => '$1 namespace name(s) of $2 are not translated to $3, but exist in en:',
+                       'projecttalk' =>
+                               '$1 namespace name(s) and alias(es) in $3 are project talk namespaces without the parameter:',
+                       'magic' => '$1 magic word(s) of $2 are not translated to $3, but exist in en:',
+                       'magic-old' => '$1 magic word(s) of $2 do not exist in en, but exist in $3:',
+                       'magic-over' => '$1 magic word(s) of $2 in $3 do not contain the original en word(s):',
+                       'magic-case' =>
+                               '$1 magic word(s) of $2 in $3 change the case-sensitivity of the original en word:',
+                       'special' => '$1 special page alias(es) of $2 are not translated to $3, but exist in en:',
+                       'special-old' => '$1 special page alias(es) of $2 do not exist in en, but exist in $3:',
+               ];
        }
 
-       # Messages without variables
-       if ( in_array( 'variables', $checks ) ) {
-               $messagesWithoutVariables = $languages->getMessagesWithoutVariables( $code );
-               $messagesWithoutVariablesNumber = count( $messagesWithoutVariables );
-               $languages->outputMessagesList( $messagesWithoutVariables, $code, "\n$messagesWithoutVariablesNumber messages of $messagesNumber in $code don't use some variables while en uses them:", $displayLevel, $links, $wikiLanguage );
-               $problems += $messagesWithoutVariablesNumber;
+       /**
+        * Get help.
+        * @return string The help string.
+        */
+       protected function help() {
+               return <<<ENDS
+Run this script to check a specific language file, or all of them.
+Command line settings are in form --parameter[=value].
+Parameters:
+       --help: Show this help.
+       --lang: Language code (default: the installation default language).
+       --all: Check all customized languages.
+       --level: Show the following display level (default: 2):
+               * 0: Skip the checks (useful for checking syntax).
+               * 1: Show only the stub headers and number of wrong messages, without
+                    list of messages.
+               * 2: Show only the headers and the message keys, without the message
+                    values.
+               * 3: Show both the headers and the complete messages, with both keys and
+                    values.
+       --links: Link the message values (default off).
+       --prefix: prefix to add to links.
+       --wikilang: For the links, what is the content language of the wiki to
+           display the output in (default en).
+       --noexif: Do not check for Exif messages (a bit hard and boring to
+           translate), if you know what they are currently not translated and want
+           to focus on other problems (default off).
+       --whitelist: Do only the following checks (form: code,code).
+       --blacklist: Do not do the following checks (form: code,code).
+       --easy: Do only the easy checks, which can be treated by non-speakers of
+           the language.
+
+Check codes (ideally, all of them should result 0; all the checks are executed
+by default (except language-specific check blacklists in checkLanguage.inc):
+       * untranslated: Messages which are required to translate, but are not
+         translated.
+       * duplicate: Messages which translation equal to fallback.
+       * obsolete: Messages which are untranslatable or do not exist, but are
+         translated.
+       * variables: Messages without variables which should be used, or with
+         variables which should not be used.
+       * empty: Empty messages and messages that contain only -.
+       * whitespace: Messages which have trailing whitespace.
+       * xhtml: Messages which are not well-formed XHTML (checks only few common
+         errors).
+       * chars: Messages with hidden characters.
+       * links: Messages which contains broken links to pages (does not find all).
+       * unbalanced: Messages which contains unequal numbers of opening {[ and
+         closing ]}.
+       * namespace: Namespace names that were not translated.
+       * projecttalk: Namespace names and aliases where the project talk does not
+         contain $1.
+       * magic: Magic words that were not translated.
+       * magic-old: Magic words which do not exist.
+       * magic-over: Magic words that override the original English word.
+       * magic-case: Magic words whose translation changes the case-sensitivity of
+         the original English word.
+       * special: Special page names that were not translated.
+       * special-old: Special page names which do not exist.
+
+ENDS;
        }
 
-       # Messages without plural
-       if ( in_array( 'plural', $checks ) ) {
-               $messagesWithoutPlural = $languages->getMessagesWithoutPlural( $code );
-               $messagesWithoutPluralNumber = count( $messagesWithoutPlural );
-               $languages->outputMessagesList( $messagesWithoutPlural, $code, "\n$messagesWithoutPluralNumber messages of $messagesNumber in $code don't use {{plural}} while en uses it:", $displayLevel, $links, $wikiLanguage );
-               $problems += $messagesWithoutPluralNumber;
+       /**
+        * Execute the script.
+        */
+       public function execute() {
+               $this->doChecks();
+               if ( $this->level > 0 ) {
+                       switch ( $this->output ) {
+                               case 'plain':
+                                       $this->outputText();
+                                       break;
+                               case 'wiki':
+                                       $this->outputWiki();
+                                       break;
+                               default:
+                                       throw new MWException( "Invalid output type $this->output" );
+                       }
+               }
        }
 
-       # Empty messages
-       if ( in_array( 'empty', $checks ) ) {
-               $emptyMessages = $languages->getEmptyMessages( $code );
-               $emptyMessagesNumber = count( $emptyMessages );
-               $languages->outputMessagesList( $emptyMessages, $code, "\n$emptyMessagesNumber messages of $messagesNumber in $code are empty or -:", $displayLevel, $links, $wikiLanguage );
-               $problems += $emptyMessagesNumber;
+       /**
+        * Execute the checks.
+        */
+       protected function doChecks() {
+               $ignoredCodes = [ 'en', 'enRTL' ];
+
+               $this->results = [];
+               # Check the language
+               if ( $this->checkAll ) {
+                       foreach ( $this->L->getLanguages() as $language ) {
+                               if ( !in_array( $language, $ignoredCodes ) ) {
+                                       $this->results[$language] = $this->checkLanguage( $language );
+                               }
+                       }
+               } else {
+                       if ( in_array( $this->code, $ignoredCodes ) ) {
+                               throw new MWException( "Cannot check code $this->code." );
+                       } else {
+                               $this->results[$this->code] = $this->checkLanguage( $this->code );
+                       }
+               }
+
+               $results = $this->results;
+               foreach ( $results as $code => $checks ) {
+                       foreach ( $checks as $check => $messages ) {
+                               foreach ( $messages as $key => $details ) {
+                                       if ( $this->isCheckBlacklisted( $check, $code, $key ) ) {
+                                               unset( $this->results[$code][$check][$key] );
+                                       }
+                               }
+                       }
+               }
        }
 
-       # Messages with whitespace
-       if ( in_array( 'whitespace', $checks ) ) {
-               $messagesWithWhitespace = $languages->getMessagesWithWhitespace( $code );
-               $messagesWithWhitespaceNumber = count( $messagesWithWhitespace );
-               $languages->outputMessagesList( $messagesWithWhitespace, $code, "\n$messagesWithWhitespaceNumber messages of $messagesNumber in $code have a trailing whitespace:", $displayLevel, $links, $wikiLanguage );
-               $problems += $messagesWithWhitespaceNumber;
+       /**
+        * Get the check blacklist.
+        * @return array The list of checks which should not be executed.
+        */
+       protected function getCheckBlacklist() {
+               static $blacklist = null;
+
+               if ( $blacklist !== null ) {
+                       return $blacklist;
+               }
+
+               // @codingStandardsIgnoreStart Ignore that globals should have a "wg" prefix.
+               global $checkBlacklist;
+               // @codingStandardsIgnoreEnd
+
+               $blacklist = $checkBlacklist;
+
+               Hooks::run( 'LocalisationChecksBlacklist', [ &$blacklist ] );
+
+               return $blacklist;
        }
 
-       # Non-XHTML messages
-       if ( in_array( 'xhtml', $checks ) ) {
-               $nonXHTMLMessages = $languages->getNonXHTMLMessages( $code );
-               $nonXHTMLMessagesNumber = count( $nonXHTMLMessages );
-               $languages->outputMessagesList( $nonXHTMLMessages, $code, "\n$nonXHTMLMessagesNumber messages of $messagesNumber in $code are not well-formed XHTML:", $displayLevel, $links, $wikiLanguage );
-               $problems += $nonXHTMLMessagesNumber;
+       /**
+        * Verify whether a check is blacklisted.
+        *
+        * @param string $check Check name
+        * @param string $code Language code
+        * @param string|bool $message Message name, or False for a whole language
+        * @return bool Whether the check is blacklisted
+        */
+       protected function isCheckBlacklisted( $check, $code, $message ) {
+               $blacklist = $this->getCheckBlacklist();
+
+               foreach ( $blacklist as $item ) {
+                       if ( isset( $item['check'] ) && $check !== $item['check'] ) {
+                               continue;
+                       }
+
+                       if ( isset( $item['code'] ) && !in_array( $code, $item['code'] ) ) {
+                               continue;
+                       }
+
+                       if ( isset( $item['message'] ) &&
+                               ( $message === false || !in_array( $message, $item['message'] ) )
+                       ) {
+                               continue;
+                       }
+
+                       return true;
+               }
+
+               return false;
        }
 
-       # Messages with wrong characters
-       if ( in_array( 'chars', $checks ) ) {
-               $messagesWithWrongChars = $languages->getMessagesWithWrongChars( $code );
-               $messagesWithWrongCharsNumber = count( $messagesWithWrongChars );
-               $languages->outputMessagesList( $messagesWithWrongChars, $code, "\n$messagesWithWrongCharsNumber messages of $messagesNumber in $code include hidden chars which should not be used in the messages:", $displayLevel, $links, $wikiLanguage );
-               $problems += $messagesWithWrongCharsNumber;
+       /**
+        * Check a language.
+        * @param string $code The language code.
+        * @throws MWException
+        * @return array The results.
+        */
+       protected function checkLanguage( $code ) {
+               # Syntax check only
+               $results = [];
+               if ( $this->level === 0 ) {
+                       $this->L->getMessages( $code );
+
+                       return $results;
+               }
+
+               $checkFunctions = $this->getChecks();
+               foreach ( $this->checks as $check ) {
+                       if ( $this->isCheckBlacklisted( $check, $code, false ) ) {
+                               $results[$check] = [];
+                               continue;
+                       }
+
+                       $callback = [ $this->L, $checkFunctions[$check] ];
+                       if ( !is_callable( $callback ) ) {
+                               throw new MWException( "Unkown check $check." );
+                       }
+                       $results[$check] = call_user_func( $callback, $code );
+               }
+
+               return $results;
+       }
+
+       /**
+        * Format a message key.
+        * @param string $key The message key.
+        * @param string $code The language code.
+        * @return string The formatted message key.
+        */
+       protected function formatKey( $key, $code ) {
+               if ( $this->doLinks ) {
+                       $displayKey = ucfirst( $key );
+                       if ( $code == $this->wikiCode ) {
+                               return "[[{$this->linksPrefix}MediaWiki:$displayKey|$key]]";
+                       } else {
+                               return "[[{$this->linksPrefix}MediaWiki:$displayKey/$code|$key]]";
+                       }
+               } else {
+                       return $key;
+               }
        }
 
-       return $problems;
+       /**
+        * Output the checks results as plain text.
+        */
+       protected function outputText() {
+               foreach ( $this->results as $code => $results ) {
+                       $translated = $this->L->getMessages( $code );
+                       $translated = count( $translated['translated'] );
+                       foreach ( $results as $check => $messages ) {
+                               $count = count( $messages );
+                               if ( $count ) {
+                                       if ( $check == 'untranslated' ) {
+                                               $translatable = $this->L->getGeneralMessages();
+                                               $total = count( $translatable['translatable'] );
+                                       } elseif ( in_array( $check, $this->nonMessageChecks() ) ) {
+                                               $totalCount = $this->getTotalCount();
+                                               $totalCount = $totalCount[$check];
+                                               $callback = [ $this->L, $totalCount[0] ];
+                                               $callCode = $totalCount[1] ? $totalCount[1] : $code;
+                                               $total = count( call_user_func( $callback, $callCode ) );
+                                       } else {
+                                               $total = $translated;
+                                       }
+                                       $search = [ '$1', '$2', '$3' ];
+                                       $replace = [ $count, $total, $code ];
+                                       $descriptions = $this->getDescriptions();
+                                       echo "\n" . str_replace( $search, $replace, $descriptions[$check] ) . "\n";
+                                       if ( $this->level == 1 ) {
+                                               echo "[messages are hidden]\n";
+                                       } else {
+                                               foreach ( $messages as $key => $value ) {
+                                                       if ( !in_array( $check, $this->nonMessageChecks() ) ) {
+                                                               $key = $this->formatKey( $key, $code );
+                                                       }
+                                                       if ( $this->level == 2 || empty( $value ) ) {
+                                                               echo "* $key\n";
+                                                       } else {
+                                                               echo "* $key:           '$value'\n";
+                                                       }
+                                               }
+                                       }
+                               }
+                       }
+               }
+       }
+
+       /**
+        * Output the checks results as wiki text.
+        */
+       function outputWiki() {
+               $detailText = '';
+               $rows[] = '! Language !! Code !! Total !! ' .
+                       implode( ' !! ', array_diff( $this->checks, $this->nonMessageChecks() ) );
+               foreach ( $this->results as $code => $results ) {
+                       $detailTextForLang = "==$code==\n";
+                       $numbers = [];
+                       $problems = 0;
+                       $detailTextForLangChecks = [];
+                       foreach ( $results as $check => $messages ) {
+                               if ( in_array( $check, $this->nonMessageChecks() ) ) {
+                                       continue;
+                               }
+                               $count = count( $messages );
+                               if ( $count ) {
+                                       $problems += $count;
+                                       $messageDetails = [];
+                                       foreach ( $messages as $key => $details ) {
+                                               $displayKey = $this->formatKey( $key, $code );
+                                               $messageDetails[] = $displayKey;
+                                       }
+                                       $detailTextForLangChecks[] = "=== $code-$check ===\n* " . implode( ', ', $messageDetails );
+                                       $numbers[] = "'''[[#$code-$check|$count]]'''";
+                               } else {
+                                       $numbers[] = $count;
+                               }
+                       }
+
+                       if ( count( $detailTextForLangChecks ) ) {
+                               $detailText .= $detailTextForLang . implode( "\n", $detailTextForLangChecks ) . "\n";
+                       }
+
+                       if ( !$problems ) {
+                               # Don't list languages without problems
+                               continue;
+                       }
+                       $language = Language::fetchLanguageName( $code );
+                       $rows[] = "| $language || $code || $problems || " . implode( ' || ', $numbers );
+               }
+
+               $tableRows = implode( "\n|-\n", $rows );
+
+               $version = SpecialVersion::getVersion( 'nodb' );
+               // @codingStandardsIgnoreStart Long line.
+               echo <<<EOL
+'''Check results are for:''' <code>$version</code>
+
+
+{| class="sortable wikitable" border="2" cellpadding="4" cellspacing="0" style="background-color: #F9F9F9; border: 1px #AAAAAA solid; border-collapse: collapse; clear: both;"
+$tableRows
+|}
+
+$detailText
+
+EOL;
+               // @codingStandardsIgnoreEnd
+       }
+
+       /**
+        * Check if there are any results for the checks, in any language.
+        * @return bool True if there are any results, false if not.
+        */
+       protected function isEmpty() {
+               foreach ( $this->results as $results ) {
+                       foreach ( $results as $messages ) {
+                               if ( !empty( $messages ) ) {
+                                       return false;
+                               }
+                       }
+               }
+
+               return true;
+       }
+}
+
+/**
+ * @ingroup MaintenanceLanguage
+ */
+class CheckExtensionsCLI extends CheckLanguageCLI {
+       private $extensions;
+
+       /**
+        * @param array $options Options for script.
+        * @param string $extension The extension name (or names).
+        */
+       public function __construct( array $options, $extension ) {
+               if ( isset( $options['help'] ) ) {
+                       echo $this->help();
+                       exit( 1 );
+               }
+
+               if ( isset( $options['lang'] ) ) {
+                       $this->code = $options['lang'];
+               } else {
+                       global $wgLanguageCode;
+                       $this->code = $wgLanguageCode;
+               }
+
+               if ( isset( $options['level'] ) ) {
+                       $this->level = $options['level'];
+               }
+
+               $this->doLinks = isset( $options['links'] );
+
+               if ( isset( $options['wikilang'] ) ) {
+                       $this->wikiCode = $options['wikilang'];
+               }
+
+               if ( isset( $options['whitelist'] ) ) {
+                       $this->checks = explode( ',', $options['whitelist'] );
+               } elseif ( isset( $options['blacklist'] ) ) {
+                       $this->checks = array_diff(
+                               isset( $options['easy'] ) ? $this->easyChecks() : $this->defaultChecks(),
+                               explode( ',', $options['blacklist'] )
+                       );
+               } elseif ( isset( $options['easy'] ) ) {
+                       $this->checks = $this->easyChecks();
+               } else {
+                       $this->checks = $this->defaultChecks();
+               }
+
+               if ( isset( $options['output'] ) ) {
+                       $this->output = $options['output'];
+               }
+
+               # Some additional checks not enabled by default
+               if ( isset( $options['duplicate'] ) ) {
+                       $this->checks[] = 'duplicate';
+               }
+
+               $this->extensions = [];
+               $extensions = new PremadeMediawikiExtensionGroups();
+               $extensions->addAll();
+               if ( $extension == 'all' ) {
+                       foreach ( MessageGroups::singleton()->getGroups() as $group ) {
+                               if ( strpos( $group->getId(), 'ext-' ) === 0 && !$group->isMeta() ) {
+                                       $this->extensions[] = new ExtensionLanguages( $group );
+                               }
+                       }
+               } elseif ( $extension == 'wikimedia' ) {
+                       $wikimedia = MessageGroups::getGroup( 'ext-0-wikimedia' );
+                       foreach ( $wikimedia->wmfextensions() as $extension ) {
+                               $group = MessageGroups::getGroup( $extension );
+                               $this->extensions[] = new ExtensionLanguages( $group );
+                       }
+               } elseif ( $extension == 'flaggedrevs' ) {
+                       foreach ( MessageGroups::singleton()->getGroups() as $group ) {
+                               if ( strpos( $group->getId(), 'ext-flaggedrevs-' ) === 0 && !$group->isMeta() ) {
+                                       $this->extensions[] = new ExtensionLanguages( $group );
+                               }
+                       }
+               } else {
+                       $extensions = explode( ',', $extension );
+                       foreach ( $extensions as $extension ) {
+                               $group = MessageGroups::getGroup( 'ext-' . $extension );
+                               if ( $group ) {
+                                       $extension = new ExtensionLanguages( $group );
+                                       $this->extensions[] = $extension;
+                               } else {
+                                       print "No such extension $extension.\n";
+                               }
+                       }
+               }
+       }
+
+       /**
+        * Get the default checks.
+        * @return array A list of the default checks.
+        */
+       protected function defaultChecks() {
+               return [
+                       'untranslated', 'duplicate', 'obsolete', 'variables', 'empty', 'plural',
+                       'whitespace', 'xhtml', 'chars', 'links', 'unbalanced',
+               ];
+       }
+
+       /**
+        * Get the checks which check other things than messages.
+        * @return array A list of the non-message checks.
+        */
+       protected function nonMessageChecks() {
+               return [];
+       }
+
+       /**
+        * Get the checks that can easily be treated by non-speakers of the language.
+        * @return array A list of the easy checks.
+        */
+       protected function easyChecks() {
+               return [
+                       'duplicate', 'obsolete', 'empty', 'whitespace', 'xhtml', 'chars',
+               ];
+       }
+
+       /**
+        * Get help.
+        * @return string The help string.
+        */
+       protected function help() {
+               return <<<ENDS
+Run this script to check the status of a specific language in extensions, or
+all of them. Command line settings are in form --parameter[=value], except for
+the first one.
+Parameters:
+       * First parameter (mandatory): Extension name, multiple extension names
+         (separated by commas), "all" for all the extensions, "wikimedia" for
+         extensions used by Wikimedia or "flaggedrevs" for all FLaggedRevs
+         extension messages.
+       * lang: Language code (default: the installation default language).
+       * help: Show this help.
+       * level: Show the following display level (default: 2).
+       * links: Link the message values (default off).
+       * wikilang: For the links, what is the content language of the wiki to
+         display the output in (default en).
+       * whitelist: Do only the following checks (form: code,code).
+       * blacklist: Do not perform the following checks (form: code,code).
+       * easy: Do only the easy checks, which can be treated by non-speakers of
+         the language.
+
+Check codes (ideally, all of them should result 0; all the checks are executed
+by default (except language-specific check blacklists in checkLanguage.inc):
+       * untranslated: Messages which are required to translate, but are not
+         translated.
+       * duplicate: Messages which translation equal to fallback.
+       * obsolete: Messages which are untranslatable, but translated.
+       * variables: Messages without variables which should be used, or with
+         variables which should not be used.
+       * empty: Empty messages.
+       * whitespace: Messages which have trailing whitespace.
+       * xhtml: Messages which are not well-formed XHTML (checks only few common
+         errors).
+       * chars: Messages with hidden characters.
+       * links: Messages which contains broken links to pages (does not find all).
+       * unbalanced: Messages which contains unequal numbers of opening {[ and
+         closing ]}.
+
+Display levels (default: 2):
+       * 0: Skip the checks (useful for checking syntax).
+       * 1: Show only the stub headers and number of wrong messages, without list
+         of messages.
+       * 2: Show only the headers and the message keys, without the message
+         values.
+       * 3: Show both the headers and the complete messages, with both keys and
+         values.
+
+ENDS;
+       }
+
+       /**
+        * Execute the script.
+        */
+       public function execute() {
+               $this->doChecks();
+       }
+
+       /**
+        * Check a language and show the results.
+        * @param string $code The language code.
+        * @throws MWException
+        */
+       protected function checkLanguage( $code ) {
+               foreach ( $this->extensions as $extension ) {
+                       $this->L = $extension;
+                       $this->results = [];
+                       $this->results[$code] = parent::checkLanguage( $code );
+
+                       if ( !$this->isEmpty() ) {
+                               echo $extension->name() . ":\n";
+
+                               if ( $this->level > 0 ) {
+                                       switch ( $this->output ) {
+                                               case 'plain':
+                                                       $this->outputText();
+                                                       break;
+                                               case 'wiki':
+                                                       $this->outputWiki();
+                                                       break;
+                                               default:
+                                                       throw new MWException( "Invalid output type $this->output" );
+                                       }
+                               }
+
+                               echo "\n";
+                       }
+               }
+       }
 }
+
+// Blacklist some checks for some languages or some messages
+// Possible keys of the sub arrays are: 'check', 'code' and 'message'.
+$checkBlacklist = [
+       [
+               'check' => 'plural',
+               'code' => [ 'az', 'bo', 'cdo', 'dz', 'id', 'fa', 'gan', 'gan-hans',
+                       'gan-hant', 'gn', 'hak', 'hu', 'ja', 'jv', 'ka', 'kk-arab',
+                       'kk-cyrl', 'kk-latn', 'km', 'kn', 'ko', 'lzh', 'mn', 'ms',
+                       'my', 'sah', 'sq', 'tet', 'th', 'to', 'tr', 'vi', 'wuu', 'xmf',
+                       'yo', 'yue', 'zh', 'zh-classical', 'zh-cn', 'zh-hans',
+                       'zh-hant', 'zh-hk', 'zh-sg', 'zh-tw', 'zh-yue'
+               ],
+       ],
+       [
+               'check' => 'chars',
+               'code' => [ 'my' ],
+       ],
+];