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<?php
declare( strict_types = 1 );
namespace MediaWiki\Extension\Translate\Validation\Validators;
use MediaWiki\Extension\Translate\Utilities\GettextPlural;
use MediaWiki\Extension\Translate\Validation\MessageValidator;
use MediaWiki\Extension\Translate\Validation\ValidationIssue;
use MediaWiki\Extension\Translate\Validation\ValidationIssues;
use TMessage;
/**
* @license GPL-2.0-or-later
* @since 2019.09
*/
class GettextPluralValidator implements MessageValidator {
public function getIssues( TMessage $message, string $targetLanguage ): ValidationIssues {
$issues = new ValidationIssues();
$pluralRule = GettextPlural::getPluralRule( $targetLanguage );
// Skip validation for languages for which we do not know the plural rule
if ( !$pluralRule ) {
return $issues;
}
$definition = $message->definition();
$translation = $message->translation();
$expectedPluralCount = GettextPlural::getPluralCount( $pluralRule );
$definitionHasPlural = GettextPlural::hasPlural( $definition );
$translationHasPlural = GettextPlural::hasPlural( $translation );
$presence = $this->pluralPresenceCheck(
$definitionHasPlural,
$translationHasPlural,
$expectedPluralCount
);
if ( $presence === 'ok' ) {
[ $msgcode, $data ] = $this->pluralFormCountCheck( $translation, $expectedPluralCount );
if ( $msgcode === 'invalid-count' ) {
$issue = new ValidationIssue(
'plural',
'forms',
'translate-checks-gettext-plural-count',
[
[ 'COUNT', $expectedPluralCount ],
[ 'COUNT', $data[ 'count' ] ],
]
);
$issues->add( $issue );
}
} elseif ( $presence === 'missing' ) {
$issue = new ValidationIssue(
'plural',
'missing',
'translate-checks-gettext-plural-missing'
);
$issues->add( $issue );
} elseif ( $presence === 'unsupported' ) {
$issue = new ValidationIssue(
'plural',
'unsupported',
'translate-checks-gettext-plural-unsupported'
);
$issues->add( $issue );
}
// else not-applicable: Plural is not present in translation, but that is fine
return $issues;
}
private function pluralPresenceCheck(
$definitionHasPlural,
$translationHasPlural,
$expectedPluralCount
) {
if ( !$definitionHasPlural && $translationHasPlural ) {
return 'unsupported';
} elseif ( $definitionHasPlural && !$translationHasPlural ) {
if ( $expectedPluralCount > 1 ) {
return 'missing';
} else {
// It's okay to omit plural completely for languages without variance
return 'not-applicable';
}
} elseif ( !$definitionHasPlural && !$translationHasPlural ) {
return 'not-applicable';
}
// Both have plural
return 'ok';
}
private function pluralFormCountCheck( $text, $expectedPluralCount ) {
[ , $instanceMap ] = GettextPlural::parsePluralForms( $text );
foreach ( $instanceMap as $forms ) {
$formsCount = count( $forms );
if ( $formsCount !== $expectedPluralCount ) {
return [ 'invalid-count', [ 'count' => $formsCount ] ];
}
}
return [ 'ok', [] ];
}
}
class_alias( GettextPluralValidator::class, '\MediaWiki\Extensions\Translate\GettextPluralValidator' );
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