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<?php |
| 2 |
/** |
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* @package Polylang |
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*/ |
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|
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/** |
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* Registers and translates strings in an option. |
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* When a string is updated in an original option, the translations of the old string are assigned to the new original string. |
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* |
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* @since 2.9 |
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*/ |
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class PLL_Translate_Option { |
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|
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/** |
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* Array of option keys to translate. |
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* |
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* @var array |
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*/ |
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private $keys; |
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|
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/** |
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* Used to prevent filtering when retrieving the raw value of the option. |
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* |
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* @var bool |
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*/ |
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private static $raw = false; |
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|
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/** |
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* Array of updated strings. |
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* |
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* @var array |
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*/ |
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private $updated_strings = array(); |
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|
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/** |
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* @var PLL_MO[] |
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*/ |
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private $translations; |
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|
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/** |
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* Cache for the translated values. |
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* |
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* @var PLL_Cache<array|string> |
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*/ |
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private $cache; |
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|
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/** |
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* Constructor |
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* |
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* @since 2.9 |
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* |
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* @param string $name Option name. |
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* @param array $keys Recursive array of option keys to translate in the form: |
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* @example array( |
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* 'option_key_to_translate_1' => 1, |
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* 'option_key_to_translate_2' => 1, |
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* 'my_group' => array( |
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* 'sub_key_to_translate_1' => 1, |
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* 'sub_key_to_translate_2' => 1, |
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* ), |
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* ) |
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* |
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* Note: only keys are interpreted. Any scalar can be used as values. |
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* @param array $args { |
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* Optional. Array of arguments for registering the option. |
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* |
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* @type string $context The group in which the strings will be registered. |
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* @type string $sanitize_callback A callback function that sanitizes the option's value. |
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* } |
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*/ |
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public function __construct( $name, $keys = array(), $args = array() ) { |
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$this->cache = new PLL_Cache(); |
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|
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// Registers the strings. |
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$context = isset( $args['context'] ) ? $args['context'] : 'Polylang'; |
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$this->register_string_recursive( $context, $name, get_option( $name ), $keys ); |
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|
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// Translates the strings. |
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$this->keys = $keys; |
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add_filter( 'option_' . $name, array( $this, 'translate' ) ); // Make sure to add this filter after options are registered. |
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|
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// Filters updated values. |
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add_filter( 'pre_update_option_' . $name, array( $this, 'pre_update_option' ), 10, 3 ); |
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add_action( 'update_option_' . $name, array( $this, 'update_option' ) ); |
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|
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// Sanitizes translated strings. |
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if ( empty( $args['sanitize_callback'] ) ) { |
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add_filter( 'pll_sanitize_string_translation', array( $this, 'sanitize_option' ), 10, 2 ); |
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} else { |
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add_filter( 'pll_sanitize_string_translation', $args['sanitize_callback'], 10, 3 ); |
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} |
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} |
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|
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/** |
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* Translates the strings registered for an option. |
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* |
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* @since 1.0 |
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* |
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* @param mixed $value Either a string to translate or a list of strings to translate. |
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* @return mixed Translated string(s). |
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*/ |
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public function translate( $value ) { |
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if ( self::$raw ) { |
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return $value; |
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} |
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|
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if ( empty( $GLOBALS['l10n']['pll_string'] ) || ! $GLOBALS['l10n']['pll_string'] instanceof PLL_MO ) { |
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return $value; |
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} |
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|
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$lang = $GLOBALS['l10n']['pll_string']->get_header( 'Language' ); |
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|
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if ( ! is_string( $lang ) || '' === $lang ) { |
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return $value; |
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} |
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|
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$cache = $this->cache->get( $lang ); |
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if ( false === $cache ) { |
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$cache = $this->translate_string_recursive( $value, $this->keys ); |
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$this->cache->set( $lang, $cache ); |
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} |
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|
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return $cache; |
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} |
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|
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/** |
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* Recursively translates the strings registered for an option. |
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* |
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* @since 1.0 |
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* |
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* @param mixed $values Either a string to translate or a list of strings to translate. |
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* @param array|bool $key Array of option keys to translate. |
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* @return array|string Translated string(s) |
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*/ |
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protected function translate_string_recursive( $values, $key ) { |
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$children = is_array( $key ) ? $key : array(); |
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|
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if ( is_array( $values ) || is_object( $values ) ) { |
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if ( count( $children ) ) { |
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foreach ( $children as $name => $child ) { |
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if ( is_array( $values ) && isset( $values[ $name ] ) ) { |
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$values[ $name ] = $this->translate_string_recursive( $values[ $name ], $child ); |
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continue; |
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} |
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|
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if ( is_object( $values ) && isset( $values->$name ) ) { |
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$values->$name = $this->translate_string_recursive( $values->$name, $child ); |
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continue; |
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} |
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|
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$pattern = '#^' . str_replace( '*', '(?:.+)', $name ) . '$#'; |
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|
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foreach ( $values as $n => &$value ) { |
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// The first case could be handled by the next one, but we avoid calls to preg_match here. |
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if ( '*' === $name || ( false !== strpos( $name, '*' ) && preg_match( $pattern, $n ) ) ) { |
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$value = $this->translate_string_recursive( $value, $child ); |
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} |
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} |
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} |
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} else { |
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// Parent key is a wildcard and no sub-key has been whitelisted. |
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foreach ( $values as &$value ) { |
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$value = $this->translate_string_recursive( $value, $key ); |
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} |
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} |
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} else { |
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$values = pll__( $values ); |
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} |
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|
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return $values; |
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} |
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|
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/** |
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* Recursively registers strings for an option. |
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* |
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* @since 1.0 |
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* @since 2.7 Signature modified |
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* |
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* @param string $context The group in which the strings will be registered. |
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* @param string $option Option name. |
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* @param mixed $values Option value. |
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* @param array|bool $key Array of option keys to translate. |
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* @return void |
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*/ |
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protected function register_string_recursive( $context, $option, $values, $key ) { |
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if ( is_object( $values ) ) { |
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$values = (array) $values; |
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} |
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|
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if ( is_array( $values ) ) { |
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$children = is_array( $key ) ? $key : array(); |
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|
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if ( count( $children ) ) { |
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foreach ( $children as $name => $child ) { |
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if ( isset( $values[ $name ] ) ) { |
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$this->register_string_recursive( $context, $name, $values[ $name ], $child ); |
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continue; |
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} |
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|
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$pattern = '#^' . str_replace( '*', '(?:.+)', $name ) . '$#'; |
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|
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foreach ( $values as $n => $value ) { |
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// The first case could be handled by the next one, but we avoid calls to preg_match here. |
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if ( '*' === $name || ( false !== strpos( $name, '*' ) && preg_match( $pattern, $n ) ) ) { |
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$this->register_string_recursive( $context, $n, $value, $child ); |
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} |
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} |
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} |
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} else { |
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foreach ( $values as $n => $value ) { |
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// Parent key is a wildcard and no sub-key has been whitelisted. |
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$this->register_string_recursive( $context, $n, $value, $key ); |
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} |
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} |
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} else { |
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PLL_Admin_Strings::register_string( $option, $values, $context, true ); |
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} |
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} |
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|
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/** |
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* Returns the raw value of an option (without this class' filter). |
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* |
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* A static property is used to make sure that the option is not filtered |
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* whatever the number of instances of this class filtering the option. |
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* |
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* @since 3.3 |
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* |
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* @param string $option_name Option name. |
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* @return mixed |
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*/ |
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protected function get_raw_option( $option_name ) { |
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self::$raw = true; |
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$option_value = get_option( $option_name ); |
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self::$raw = false; |
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|
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return $option_value; |
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} |
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|
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/** |
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* Filters an option before it is updated. |
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* |
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* This is the step 1 in the update process, in which we prevent the update of |
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* strings to their translations by filtering them out, and we store the updated strings |
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* for the next step. |
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* |
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* @since 2.9 |
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* |
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* @param mixed $value The new, unserialized option value. |
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* @param mixed $old_value The old (filtered) option value. |
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* @param string $name Option name. |
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* @return mixed |
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*/ |
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public function pre_update_option( $value, $old_value, $name ) { |
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// Stores the unfiltered old option value before it is updated in DB. |
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$unfiltered_old_value = $this->get_raw_option( $name ); |
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|
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$languages = PLL()->model->get_languages_list(); |
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|
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if ( empty( $languages ) ) { |
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return $value; |
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} |
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|
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// Load translations in all languages. |
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foreach ( $languages as $language ) { |
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$this->translations[ $language->slug ] = new PLL_MO(); |
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$this->translations[ $language->slug ]->import_from_db( $language ); |
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} |
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|
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$lang = pll_current_language(); |
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if ( empty( $lang ) ) { |
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$lang = pll_default_language(); |
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} |
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|
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if ( empty( $lang ) ) { |
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return $value; // Something's wrong. |
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} |
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|
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// Filters out the strings which would be updated to their translations and stores the updated strings. |
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$value = $this->check_value_recursive( $unfiltered_old_value, $value, $this->keys, $this->translations[ $lang ] ); |
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|
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return $value; |
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} |
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|
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/** |
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* Updates the string translations to keep the same translated value when updating the original option. |
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* |
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* This is the step 2 in the update process. Knowing all strings that have been updated, |
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* we remove the old strings from the strings translations and replace them by |
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* the new strings with the old translations. |
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* |
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* @since 2.9 |
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* |
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* @return void |
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*/ |
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public function update_option() { |
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$curlang = pll_current_language(); |
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|
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if ( ! empty( $this->updated_strings ) ) { |
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foreach ( PLL()->model->get_languages_list() as $language ) { |
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|
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$mo = &$this->translations[ $language->slug ]; |
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|
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foreach ( $this->updated_strings as $old_string => $string ) { |
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$translation = $mo->translate( $old_string ); |
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if ( ( empty( $curlang ) && $translation === $old_string ) || $language->slug === $curlang ) { |
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$translation = $string; |
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} |
| 308 |
|
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// Add new entry with new string and old translation. |
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$mo->add_entry( $mo->make_entry( $string, $translation ) ); |
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} |
| 312 |
|
| 313 |
$mo->export_to_db( $language ); |
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} |
| 315 |
} |
| 316 |
|
| 317 |
$this->cache->clean(); |
| 318 |
} |
| 319 |
|
| 320 |
/** |
| 321 |
* Recursively compares the updated strings to the translation of the old string. |
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* |
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* This is the heart of the update process. If an updated string is found to be |
| 324 |
* the same as the translation of the old string, we restore the old string to |
| 325 |
* prevent the update in {@see PLL_Translate_Option::pre_update_option()}, otherwise |
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* the updated string is stored in {@see PLL_Translate_Option::updated_strings} to be able to |
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* later assign the translations to the new value in {@see PLL_Translate_Option::update_option()}. |
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* |
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* @since 2.9 |
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* @since 3.5 Added $mo parameter. |
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* |
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* @param mixed $old_values The old option value. |
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* @param mixed $values The new option value. |
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* @param array|bool $key Array of option keys to translate. |
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* @param PLL_MO $mo Translations used to compare the updated string to the translated old string. |
| 336 |
* @return mixed |
| 337 |
*/ |
| 338 |
protected function check_value_recursive( $old_values, $values, $key, $mo ) { |
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$children = is_array( $key ) ? $key : array(); |
| 340 |
|
| 341 |
if ( is_array( $values ) || is_object( $values ) ) { |
| 342 |
if ( count( $children ) ) { |
| 343 |
foreach ( $children as $name => $child ) { |
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if ( is_array( $values ) && is_array( $old_values ) && isset( $old_values[ $name ], $values[ $name ] ) ) { |
| 345 |
$values[ $name ] = $this->check_value_recursive( $old_values[ $name ], $values[ $name ], $child, $mo ); |
| 346 |
continue; |
| 347 |
} |
| 348 |
|
| 349 |
if ( is_object( $values ) && is_object( $old_values ) && isset( $old_values->$name, $values->$name ) ) { |
| 350 |
$values->$name = $this->check_value_recursive( $old_values->$name, $values->$name, $child, $mo ); |
| 351 |
continue; |
| 352 |
} |
| 353 |
|
| 354 |
$pattern = '#^' . str_replace( '*', '(?:.+)', $name ) . '$#'; |
| 355 |
|
| 356 |
foreach ( $values as $n => $value ) { |
| 357 |
// The first case could be handled by the next one, but we avoid calls to preg_match here. |
| 358 |
if ( '*' === $name || ( false !== strpos( $name, '*' ) && preg_match( $pattern, $n ) ) ) { |
| 359 |
if ( is_array( $values ) && is_array( $old_values ) && isset( $old_values[ $n ] ) ) { |
| 360 |
$values[ $n ] = $this->check_value_recursive( $old_values[ $n ], $value, $child, $mo ); |
| 361 |
} |
| 362 |
|
| 363 |
if ( is_object( $values ) && is_object( $old_values ) && isset( $old_values->$n ) ) { |
| 364 |
$values->$n = $this->check_value_recursive( $old_values->$n, $value, $child, $mo ); |
| 365 |
} |
| 366 |
} |
| 367 |
} |
| 368 |
} |
| 369 |
} else { |
| 370 |
// Parent key is a wildcard and no sub-key has been whitelisted. |
| 371 |
foreach ( $values as $n => $value ) { |
| 372 |
if ( is_array( $values ) && is_array( $old_values ) && isset( $old_values[ $n ] ) ) { |
| 373 |
$values[ $n ] = $this->check_value_recursive( $old_values[ $n ], $value, $key, $mo ); |
| 374 |
} |
| 375 |
|
| 376 |
if ( is_object( $values ) && is_object( $old_values ) && isset( $old_values->$n ) ) { |
| 377 |
$values->$n = $this->check_value_recursive( $old_values->$n, $value, $key, $mo ); |
| 378 |
} |
| 379 |
} |
| 380 |
} |
| 381 |
} elseif ( $old_values !== $values ) { |
| 382 |
if ( $mo->translate( $old_values ) === $values ) { |
| 383 |
$values = $old_values; // Prevents updating the value to its translation. |
| 384 |
} else { |
| 385 |
$this->updated_strings[ $old_values ] = $values; // Stores the updated strings. |
| 386 |
} |
| 387 |
} |
| 388 |
|
| 389 |
return $values; |
| 390 |
} |
| 391 |
|
| 392 |
/** |
| 393 |
* Sanitizes the option value. |
| 394 |
* |
| 395 |
* @since 2.9 |
| 396 |
* |
| 397 |
* @param string $value The unsanitised value. |
| 398 |
* @param string $name The name of the option. |
| 399 |
* @return string Sanitized value. |
| 400 |
*/ |
| 401 |
public function sanitize_option( $value, $name ) { |
| 402 |
return sanitize_option( $name, $value ); |
| 403 |
} |
| 404 |
} |
| 405 |
|
