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<?php
/**
* Script for comparing different plural implementations.
*
* @author Niklas Laxström
*
* @copyright Copyright © 2010, Niklas Laxström
* @license GPL-2.0+
* @file
*/
// Standard boilerplate to define $IP
if ( getenv( 'MW_INSTALL_PATH' ) !== false ) {
$IP = getenv( 'MW_INSTALL_PATH' );
} else {
$IP = __DIR__ . '/../../..';
}
require_once "$IP/maintenance/Maintenance.php";
/// Script for comparing different plural implementations.
class PluralCompare extends Maintenance {
public function __construct() {
parent::__construct();
$this->mDescription = 'Script for comparing different plural implementations.';
}
public function execute() {
$mwLanguages = $this->loadMediaWiki();
$gtLanguages = $this->loadGettext();
$clLanguages = $this->loadCLDR();
$all = Language::fetchLanguageNames( null, 'all' );
$allkeys = array_keys( $all + $mwLanguages + $gtLanguages + $clLanguages );
sort( $allkeys );
$this->output( sprintf( "%12s %3s %3s %4s\n", 'Code', 'MW', 'Get', 'CLDR' ) );
foreach ( $allkeys as $code ) {
$mw = isset( $mwLanguages[$code] ) ? '+' : '';
$gt = isset( $gtLanguages[$code] ) ? '+' : '';
$cl = isset( $clLanguages[$code] ) ? '+' : '';
if ( $mw === '' ) {
$fallbacks = Language::getFallbacksFor( $code );
foreach ( $fallbacks as $fcode ) {
if ( $fcode !== 'en' && isset( $mwLanguages[$fcode] ) ) {
$mw = '.';
}
}
}
$error = '';
if ( substr_count( sprintf( '%s%s%s', $mw, $gt, $cl ), '+' ) > 1 ) {
$error = $this->tryMatch( $code, $mw, $gtLanguages, $clLanguages );
}
$this->output( sprintf( "%12s %-3s %-3s %-4s %s\n", $code, $mw, $gt, $cl, $error ) );
}
}
protected function tryMatch( $code, $mws, $gtLanguages, $clLanguages ) {
if ( $mws !== '' ) {
$mwExp = true;
$lang = Language::factory( $code );
} else {
$mwExp = false;
}
if ( isset( $gtLanguages[$code] ) ) {
$gtExp = 'return (int) ' . str_replace( 'n', '$i', $gtLanguages[$code] ) . ';';
} else {
$gtExp = false;
}
if ( isset( $clLanguages[$code] ) ) {
$cldrExp = $clLanguages[$code];
} else {
$cldrExp = false;
}
for ( $i = 0; $i <= 250; $i++ ) {
$mw = $gt = $cl = '?';
if ( $mwExp ) {
$exp = $lang->getCompiledPluralRules();
$mw = CLDRPluralRuleEvaluator::evaluateCompiled( $i, $exp );
}
if ( $gtExp ) {
$gt = eval( $gtExp );
}
if ( $cldrExp ) {
$cl = CLDRPluralRuleEvaluator::evaluate( $i, $cldrExp );
}
if ( self::comp( $mw, $gt ) && self::comp( $gt, $cl ) && self::comp( $cl, $mw ) ) {
continue;
}
return "$i: $mw $gt $cl";
}
return '';
}
public static function comp( $a, $b ) {
return $a === '?' || $b === '?' || $a === $b;
}
protected function loadPluralFile( $fileName ) {
$doc = new DOMDocument;
$doc->load( $fileName );
$rulesets = $doc->getElementsByTagName( 'pluralRules' );
$plurals = array();
foreach ( $rulesets as $ruleset ) {
$codes = $ruleset->getAttribute( 'locales' );
$rules = array();
$ruleElements = $ruleset->getElementsByTagName( 'pluralRule' );
foreach ( $ruleElements as $elt ) {
$rules[] = $elt->nodeValue;
}
foreach ( explode( ' ', $codes ) as $code ) {
$plurals[$code] = $rules;
}
}
return $plurals;
}
public function loadCLDR() {
// @codingStandardsIgnoreStart Ignore MediaWiki.NamingConventions.ValidGlobalName.wgPrefix
global $IP;
// @codingStandardsIgnoreEnd
return $this->loadPluralFile( "$IP/languages/data/plurals.xml" );
}
public function loadMediaWiki() {
// @codingStandardsIgnoreStart Ignore MediaWiki.NamingConventions.ValidGlobalName.wgPrefix
global $IP;
// @codingStandardsIgnoreEnd
$rules = $this->loadPluralFile( "$IP/languages/data/plurals.xml" );
$rulesMW = $this->loadPluralFile( "$IP/languages/data/plurals-mediawiki.xml" );
return array_merge( $rules, $rulesMW );
}
public function loadGettext() {
$gtData = file_get_contents( __DIR__ . '/../data/plural-gettext.txt' );
$gtLanguages = array();
foreach ( preg_split( '/\n|\r/', $gtData, -1, PREG_SPLIT_NO_EMPTY ) as $line ) {
list( $code, $rule ) = explode( "\t", $line );
$rule = preg_replace( '/^.*?plural=/', '', $rule );
$gtLanguages[$code] = $rule;
}
return $gtLanguages;
}
}
$maintClass = 'PluralCompare';
require_once DO_MAINTENANCE;
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