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Edit File : class-wp-translation-file.php \| Size : 6.13 KB
<?php /** * I18N: WP_Translation_File class. * * @package WordPress * @subpackage I18N * @since 6.5.0 / /* * Class WP_Translation_File. * * @since 6.5.0 / abstract class WP_Translation_File { /* * List of headers. * * @since 6.5.0 * @var array<string, string> / protected $headers = array(); /* * Whether file has been parsed. * * @since 6.5.0 * @var bool / protected $parsed = false; /* * Error information. * * @since 6.5.0 * @var string\|null Error message or null if no error. / protected $error; /* * File name. * * @since 6.5.0 * @var string / protected $file = ''; /* * Translation entries. * * @since 6.5.0 * @var array<string, string> / protected $entries = array(); /* * Plural forms function. * * @since 6.5.0 * @var callable\|null Plural forms. / protected $plural_forms = null; /* * Constructor. * * @since 6.5.0 * * @param string $file File to load. / protected function __construct( string $file ) { $this->file = $file; } /* * Creates a new WP_Translation_File instance for a given file. * * @since 6.5.0 * * @param string $file File name. * @param string\|null $filetype Optional. File type. Default inferred from file name. * @return false\|WP_Translation_File / public static function create( string $file, ?string $filetype = null ) { if ( ! is_readable( $file ) ) { return false; } if ( null === $filetype ) { $pos = strrpos( $file, '.' ); if ( false !== $pos ) { $filetype = substr( $file, $pos + 1 ); } } switch ( $filetype ) { case 'mo': return new WP_Translation_File_MO( $file ); case 'php': return new WP_Translation_File_PHP( $file ); default: return false; } } /* * Creates a new WP_Translation_File instance for a given file. * * @since 6.5.0 * * @param string $file Source file name. * @param string $filetype Desired target file type. * @return string\|false Transformed translation file contents on success, false otherwise. / public static function transform( string $file, string $filetype ) { $source = self::create( $file ); if ( false === $source ) { return false; } switch ( $filetype ) { case 'mo': $destination = new WP_Translation_File_MO( '' ); break; case 'php': $destination = new WP_Translation_File_PHP( '' ); break; default: return false; } $success = $destination->import( $source ); if ( ! $success ) { return false; } return $destination->export(); } /* * Returns all headers. * * @since 6.5.0 * * @return array<string, string> Headers. / public function headers(): array { if ( ! $this->parsed ) { $this->parse_file(); } return $this->headers; } /* * Returns all entries. * * @since 6.5.0 * * @return array<string, string[]> Entries. / public function entries(): array { if ( ! $this->parsed ) { $this->parse_file(); } return $this->entries; } /* * Returns the current error information. * * @since 6.5.0 * * @return string\|null Error message or null if no error. / public function error() { return $this->error; } /* * Returns the file name. * * @since 6.5.0 * * @return string File name. / public function get_file(): string { return $this->file; } /* * Translates a given string. * * @since 6.5.0 * * @param string $text String to translate. * @return false\|string Translation(s) on success, false otherwise. / public function translate( string $text ) { if ( ! $this->parsed ) { $this->parse_file(); } return $this->entries[ $text ] ?? false; } /* * Returns the plural form for a given number. * * @since 6.5.0 * * @param int $number Count. * @return int Plural form. / public function get_plural_form( int $number ): int { if ( ! $this->parsed ) { $this->parse_file(); } if ( null === $this->plural_forms && isset( $this->headers['plural-forms'] ) ) { $expression = $this->get_plural_expression_from_header( $this->headers['plural-forms'] ); $this->plural_forms = $this->make_plural_form_function( $expression ); } if ( is_callable( $this->plural_forms ) ) { /* * Plural form. * * @var int $result Plural form. / $result = call_user_func( $this->plural_forms, $number ); return $result; } // Default plural form matches English, only "One" is considered singular. return ( 1 === $number ? 0 : 1 ); } /* * Returns the plural forms expression as a tuple. * * @since 6.5.0 * * @param string $header Plural-Forms header string. * @return string Plural forms expression. / protected function get_plural_expression_from_header( string $header ): string { if ( preg_match( '/^\snplurals\s=\s(\d+)\s;\s+plural\s=\s(.+)$/', $header, $matches ) ) { return trim( $matches[2] ); } return 'n != 1'; } /* * Makes a function, which will return the right translation index, according to the * plural forms header. * * @since 6.5.0 * * @param string $expression Plural form expression. * @return callable(int $num): int Plural forms function. / protected function make_plural_form_function( string $expression ): callable { try { $handler = new Plural_Forms( rtrim( $expression, ';' ) ); return array( $handler, 'get' ); } catch ( Exception $e ) { // Fall back to default plural-form function. return $this->make_plural_form_function( 'n != 1' ); } } /* * Imports translations from another file. * * @since 6.5.0 * * @param WP_Translation_File $source Source file. * @return bool True on success, false otherwise. / protected function import( WP_Translation_File $source ): bool { if ( null !== $source->error() ) { return false; } $this->headers = $source->headers(); $this->entries = $source->entries(); $this->error = $source->error(); return null === $this->error; } /* * Parses the file. * * @since 6.5.0 / abstract protected function parse_file(); /* * Exports translation contents as a string. * * @since 6.5.0 * * @return string Translation file contents. */ abstract public function export(); } Back

Edit File : class-wp-translation-file.php | Size : 6.13 KB

<?php
/**
 * I18N: WP_Translation_File class.
 *
 * @package WordPress
 * @subpackage I18N
 * @since 6.5.0
 */

/**
 * Class WP_Translation_File.
 *
 * @since 6.5.0
 */
abstract class WP_Translation_File {
	/**
	 * List of headers.
	 *
	 * @since 6.5.0
	 * @var array<string, string>
	 */
	protected $headers = array();

/**
	 * Whether file has been parsed.
	 *
	 * @since 6.5.0
	 * @var bool
	 */
	protected $parsed = false;

/**
	 * Error information.
	 *
	 * @since 6.5.0
	 * @var string|null Error message or null if no error.
	 */
	protected $error;

/**
	 * File name.
	 *
	 * @since 6.5.0
	 * @var string
	 */
	protected $file = '';

/**
	 * Translation entries.
	 *
	 * @since 6.5.0
	 * @var array<string, string>
	 */
	protected $entries = array();

/**
	 * Plural forms function.
	 *
	 * @since 6.5.0
	 * @var callable|null Plural forms.
	 */
	protected $plural_forms = null;

/**
	 * Constructor.
	 *
	 * @since 6.5.0
	 *
	 * @param string $file File to load.
	 */
	protected function __construct( string $file ) {
		$this->file = $file;
	}

/**
	 * Creates a new WP_Translation_File instance for a given file.
	 *
	 * @since 6.5.0
	 *
	 * @param string      $file     File name.
	 * @param string|null $filetype Optional. File type. Default inferred from file name.
	 * @return false|WP_Translation_File
	 */
	public static function create( string $file, ?string $filetype = null ) {
		if ( ! is_readable( $file ) ) {
			return false;
		}

if ( null === $filetype ) {
			$pos = strrpos( $file, '.' );
			if ( false !== $pos ) {
				$filetype = substr( $file, $pos + 1 );
			}
		}

switch ( $filetype ) {
			case 'mo':
				return new WP_Translation_File_MO( $file );
			case 'php':
				return new WP_Translation_File_PHP( $file );
			default:
				return false;
		}
	}

/**
	 * Creates a new WP_Translation_File instance for a given file.
	 *
	 * @since 6.5.0
	 *
	 * @param string $file     Source file name.
	 * @param string $filetype Desired target file type.
	 * @return string|false Transformed translation file contents on success, false otherwise.
	 */
	public static function transform( string $file, string $filetype ) {
		$source = self::create( $file );

if ( false === $source ) {
			return false;
		}

switch ( $filetype ) {
			case 'mo':
				$destination = new WP_Translation_File_MO( '' );
				break;
			case 'php':
				$destination = new WP_Translation_File_PHP( '' );
				break;
			default:
				return false;
		}

$success = $destination->import( $source );

if ( ! $success ) {
			return false;
		}

return $destination->export();
	}

/**
	 * Returns all headers.
	 *
	 * @since 6.5.0
	 *
	 * @return array<string, string> Headers.
	 */
	public function headers(): array {
		if ( ! $this->parsed ) {
			$this->parse_file();
		}
		return $this->headers;
	}

/**
	 * Returns all entries.
	 *
	 * @since 6.5.0
	 *
	 * @return array<string, string[]> Entries.
	 */
	public function entries(): array {
		if ( ! $this->parsed ) {
			$this->parse_file();
		}

return $this->entries;
	}

/**
	 * Returns the current error information.
	 *
	 * @since 6.5.0
	 *
	 * @return string|null Error message or null if no error.
	 */
	public function error() {
		return $this->error;
	}

/**
	 * Returns the file name.
	 *
	 * @since 6.5.0
	 *
	 * @return string File name.
	 */
	public function get_file(): string {
		return $this->file;
	}

/**
	 * Translates a given string.
	 *
	 * @since 6.5.0
	 *
	 * @param string $text String to translate.
	 * @return false|string Translation(s) on success, false otherwise.
	 */
	public function translate( string $text ) {
		if ( ! $this->parsed ) {
			$this->parse_file();
		}

return $this->entries[ $text ] ?? false;
	}

/**
	 * Returns the plural form for a given number.
	 *
	 * @since 6.5.0
	 *
	 * @param int $number Count.
	 * @return int Plural form.
	 */
	public function get_plural_form( int $number ): int {
		if ( ! $this->parsed ) {
			$this->parse_file();
		}

if ( null === $this->plural_forms && isset( $this->headers['plural-forms'] ) ) {
			$expression         = $this->get_plural_expression_from_header( $this->headers['plural-forms'] );
			$this->plural_forms = $this->make_plural_form_function( $expression );
		}

if ( is_callable( $this->plural_forms ) ) {
			/**
			 * Plural form.
			 *
			 * @var int $result Plural form.
			 */
			$result = call_user_func( $this->plural_forms, $number );

return $result;
		}

// Default plural form matches English, only "One" is considered singular.
		return ( 1 === $number ? 0 : 1 );
	}

/**
	 * Returns the plural forms expression as a tuple.
	 *
	 * @since 6.5.0
	 *
	 * @param string $header Plural-Forms header string.
	 * @return string Plural forms expression.
	 */
	protected function get_plural_expression_from_header( string $header ): string {
		if ( preg_match( '/^\s*nplurals\s*=\s*(\d+)\s*;\s+plural\s*=\s*(.+)$/', $header, $matches ) ) {
			return trim( $matches[2] );
		}

return 'n != 1';
	}

/**
	 * Makes a function, which will return the right translation index, according to the
	 * plural forms header.
	 *
	 * @since 6.5.0
	 *
	 * @param string $expression Plural form expression.
	 * @return callable(int $num): int Plural forms function.
	 */
	protected function make_plural_form_function( string $expression ): callable {
		try {
			$handler = new Plural_Forms( rtrim( $expression, ';' ) );
			return array( $handler, 'get' );
		} catch ( Exception $e ) {
			// Fall back to default plural-form function.
			return $this->make_plural_form_function( 'n != 1' );
		}
	}

/**
	 * Imports translations from another file.
	 *
	 * @since 6.5.0
	 *
	 * @param WP_Translation_File $source Source file.
	 * @return bool True on success, false otherwise.
	 */
	protected function import( WP_Translation_File $source ): bool {
		if ( null !== $source->error() ) {
			return false;
		}

$this->headers = $source->headers();
		$this->entries = $source->entries();
		$this->error   = $source->error();

return null === $this->error;
	}

/**
	 * Parses the file.
	 *
	 * @since 6.5.0
	 */
	abstract protected function parse_file();

/**
	 * Exports translation contents as a string.
	 *
	 * @since 6.5.0
	 *
	 * @return string Translation file contents.
	 */
	abstract public function export();
}

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