WordPress/wp-includes/pomo/translations.php

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<?php
/**
* Class for a set of entries for translation and their associated headers
*
* @version $Id: translations.php 1157 2015-11-20 04:30:11Z dd32 $
* @package pomo
* @subpackage translations
*/
require_once __DIR__ . '/plural-forms.php';
require_once __DIR__ . '/entry.php';
if ( ! class_exists( 'Translations', false ) ) :
Code Modernization: Add `AllowDynamicProperties` attribute to all (parent) classes. Dynamic (non-explicitly declared) properties are deprecated as of PHP 8.2 and are expected to become a fatal error in PHP 9.0. There are a number of ways to mitigate this: * If it is an accidental typo for a declared property: fix the typo. * For known properties: declare them on the class. * For unknown properties: add the magic `__get()`, `__set()`, et al. methods to the class or let the class extend `stdClass` which has highly optimized versions of these magic methods built in. * For unknown ''use'' of dynamic properties, the `#[AllowDynamicProperties]` attribute can be added to the class. The attribute will automatically be inherited by child classes. Trac ticket #56034 is open to investigate and handle the third and fourth type of situations, however it has become clear this will need more time and will not be ready in time for WP 6.1. To reduce “noise” in the meantime, both in the error logs of WP users moving onto PHP 8.2, in the test run logs of WP itself, in test runs of plugins and themes, as well as to prevent duplicate tickets from being opened for the same issue, this commit adds the `#[AllowDynamicProperties]` attribute to all “parent” classes in WP. The logic used for this commit is as follows: * If a class already has the attribute: no action needed. * If a class does not `extend`: add the attribute. * If a class does `extend`: - If it extends `stdClass`: no action needed (as `stdClass` supports dynamic properties). - If it extends a PHP native class: add the attribute. - If it extends a class from one of WP's external dependencies: add the attribute. * In all other cases: no action — the attribute should not be needed as child classes inherit from the parent. Whether or not a class contains magic methods has not been taken into account, as a review of the currently existing magic methods has shown that those are generally not sturdy enough and often even set dynamic properties (which they should not). See the [https://www.youtube.com/watch?v=vDZWepDQQVE live stream from August 16, 2022] for more details. This commit only affects classes in the `src` directory of WordPress core. * Tests should not get this attribute, but should be fixed to not use dynamic properties instead. Patches for this are already being committed under ticket #56033. * While a number bundled themes (2014, 2019, 2020, 2021) contain classes, they are not a part of this commit and may be updated separately. Reference: [https://wiki.php.net/rfc/deprecate_dynamic_properties PHP RFC: Deprecate dynamic properties]. Follow-up to [53922]. Props jrf, hellofromTonya, markjaquith, peterwilsoncc, costdev, knutsp, aristath. See #56513, #56034. Built from https://develop.svn.wordpress.org/trunk@54133 git-svn-id: http://core.svn.wordpress.org/trunk@53692 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2022-09-12 11:47:14 -04:00
#[AllowDynamicProperties]
class Translations {
public $entries = array();
public $headers = array();
/**
* Add entry to the PO structure
*
* @param array|Translation_Entry $entry
* @return bool true on success, false if the entry doesn't have a key
*/
public function add_entry( $entry ) {
if ( is_array( $entry ) ) {
$entry = new Translation_Entry( $entry );
}
$key = $entry->key();
if ( false === $key ) {
return false;
}
$this->entries[ $key ] = &$entry;
return true;
}
/**
* @param array|Translation_Entry $entry
* @return bool
*/
public function add_entry_or_merge( $entry ) {
if ( is_array( $entry ) ) {
$entry = new Translation_Entry( $entry );
}
$key = $entry->key();
if ( false === $key ) {
return false;
}
if ( isset( $this->entries[ $key ] ) ) {
$this->entries[ $key ]->merge_with( $entry );
} else {
$this->entries[ $key ] = &$entry;
}
return true;
}
/**
* Sets $header PO header to $value
*
* If the header already exists, it will be overwritten
*
* TODO: this should be out of this class, it is gettext specific
*
* @param string $header header name, without trailing :
* @param string $value header value, without trailing \n
*/
public function set_header( $header, $value ) {
$this->headers[ $header ] = $value;
}
/**
* @param array $headers
*/
public function set_headers( $headers ) {
foreach ( $headers as $header => $value ) {
$this->set_header( $header, $value );
}
}
/**
* @param string $header
*/
public function get_header( $header ) {
return isset( $this->headers[ $header ] ) ? $this->headers[ $header ] : false;
}
/**
* @param Translation_Entry $entry
*/
public function translate_entry( &$entry ) {
$key = $entry->key();
return isset( $this->entries[ $key ] ) ? $this->entries[ $key ] : false;
}
/**
* @param string $singular
* @param string $context
* @return string
*/
public function translate( $singular, $context = null ) {
$entry = new Translation_Entry(
array(
'singular' => $singular,
'context' => $context,
)
);
$translated = $this->translate_entry( $entry );
return ( $translated && ! empty( $translated->translations ) ) ? $translated->translations[0] : $singular;
}
/**
* Given the number of items, returns the 0-based index of the plural form to use
*
* Here, in the base Translations class, the common logic for English is implemented:
* 0 if there is one element, 1 otherwise
*
* This function should be overridden by the subclasses. For example MO/PO can derive the logic
* from their headers.
*
* @param int $count number of items
*/
public function select_plural_form( $count ) {
return 1 === (int) $count ? 0 : 1;
}
/**
* @return int
*/
public function get_plural_forms_count() {
return 2;
}
/**
* @param string $singular
* @param string $plural
* @param int $count
* @param string $context
*/
public function translate_plural( $singular, $plural, $count, $context = null ) {
$entry = new Translation_Entry(
array(
'singular' => $singular,
'plural' => $plural,
'context' => $context,
)
);
$translated = $this->translate_entry( $entry );
$index = $this->select_plural_form( $count );
$total_plural_forms = $this->get_plural_forms_count();
if ( $translated && 0 <= $index && $index < $total_plural_forms &&
is_array( $translated->translations ) &&
isset( $translated->translations[ $index ] ) ) {
return $translated->translations[ $index ];
} else {
return 1 === (int) $count ? $singular : $plural;
}
}
/**
* Merge $other in the current object.
*
* @param Object $other Another Translation object, whose translations will be merged in this one (passed by reference).
*/
public function merge_with( &$other ) {
foreach ( $other->entries as $entry ) {
$this->entries[ $entry->key() ] = $entry;
}
}
/**
* @param object $other
*/
public function merge_originals_with( &$other ) {
foreach ( $other->entries as $entry ) {
if ( ! isset( $this->entries[ $entry->key() ] ) ) {
$this->entries[ $entry->key() ] = $entry;
} else {
$this->entries[ $entry->key() ]->merge_with( $entry );
}
}
}
}
class Gettext_Translations extends Translations {
/**
* Number of plural forms.
*
* @var int
*/
public $_nplurals;
/**
* Callback to retrieve the plural form.
*
* @var callable
*/
public $_gettext_select_plural_form;
/**
* The gettext implementation of select_plural_form.
*
* It lives in this class, because there are more than one descendand, which will use it and
* they can't share it effectively.
*
* @param int $count
*/
public function gettext_select_plural_form( $count ) {
if ( ! isset( $this->_gettext_select_plural_form ) || is_null( $this->_gettext_select_plural_form ) ) {
list( $nplurals, $expression ) = $this->nplurals_and_expression_from_header( $this->get_header( 'Plural-Forms' ) );
$this->_nplurals = $nplurals;
$this->_gettext_select_plural_form = $this->make_plural_form_function( $nplurals, $expression );
}
return call_user_func( $this->_gettext_select_plural_form, $count );
}
/**
* @param string $header
* @return array
*/
public function nplurals_and_expression_from_header( $header ) {
if ( preg_match( '/^\s*nplurals\s*=\s*(\d+)\s*;\s+plural\s*=\s*(.+)$/', $header, $matches ) ) {
$nplurals = (int) $matches[1];
$expression = trim( $matches[2] );
return array( $nplurals, $expression );
} else {
return array( 2, 'n != 1' );
}
}
/**
* Makes a function, which will return the right translation index, according to the
* plural forms header
*
* @param int $nplurals
* @param string $expression
*/
public function make_plural_form_function( $nplurals, $expression ) {
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( 2, 'n != 1' );
}
}
/**
* Adds parentheses to the inner parts of ternary operators in
* plural expressions, because PHP evaluates ternary oerators from left to right
*
* @param string $expression the expression without parentheses
* @return string the expression with parentheses added
*/
public function parenthesize_plural_exression( $expression ) {
$expression .= ';';
$res = '';
$depth = 0;
for ( $i = 0; $i < strlen( $expression ); ++$i ) {
$char = $expression[ $i ];
switch ( $char ) {
case '?':
$res .= ' ? (';
$depth++;
break;
case ':':
$res .= ') : (';
break;
case ';':
$res .= str_repeat( ')', $depth ) . ';';
$depth = 0;
break;
default:
$res .= $char;
}
}
return rtrim( $res, ';' );
}
/**
* @param string $translation
* @return array
*/
public function make_headers( $translation ) {
$headers = array();
// Sometimes \n's are used instead of real new lines.
$translation = str_replace( '\n', "\n", $translation );
$lines = explode( "\n", $translation );
foreach ( $lines as $line ) {
$parts = explode( ':', $line, 2 );
if ( ! isset( $parts[1] ) ) {
continue;
}
$headers[ trim( $parts[0] ) ] = trim( $parts[1] );
}
return $headers;
}
/**
* @param string $header
* @param string $value
*/
public function set_header( $header, $value ) {
parent::set_header( $header, $value );
if ( 'Plural-Forms' === $header ) {
list( $nplurals, $expression ) = $this->nplurals_and_expression_from_header( $this->get_header( 'Plural-Forms' ) );
$this->_nplurals = $nplurals;
$this->_gettext_select_plural_form = $this->make_plural_form_function( $nplurals, $expression );
}
}
}
endif;
if ( ! class_exists( 'NOOP_Translations', false ) ) :
/**
* Provides the same interface as Translations, but doesn't do anything
*/
Code Modernization: Add `AllowDynamicProperties` attribute to all (parent) classes. Dynamic (non-explicitly declared) properties are deprecated as of PHP 8.2 and are expected to become a fatal error in PHP 9.0. There are a number of ways to mitigate this: * If it is an accidental typo for a declared property: fix the typo. * For known properties: declare them on the class. * For unknown properties: add the magic `__get()`, `__set()`, et al. methods to the class or let the class extend `stdClass` which has highly optimized versions of these magic methods built in. * For unknown ''use'' of dynamic properties, the `#[AllowDynamicProperties]` attribute can be added to the class. The attribute will automatically be inherited by child classes. Trac ticket #56034 is open to investigate and handle the third and fourth type of situations, however it has become clear this will need more time and will not be ready in time for WP 6.1. To reduce “noise” in the meantime, both in the error logs of WP users moving onto PHP 8.2, in the test run logs of WP itself, in test runs of plugins and themes, as well as to prevent duplicate tickets from being opened for the same issue, this commit adds the `#[AllowDynamicProperties]` attribute to all “parent” classes in WP. The logic used for this commit is as follows: * If a class already has the attribute: no action needed. * If a class does not `extend`: add the attribute. * If a class does `extend`: - If it extends `stdClass`: no action needed (as `stdClass` supports dynamic properties). - If it extends a PHP native class: add the attribute. - If it extends a class from one of WP's external dependencies: add the attribute. * In all other cases: no action — the attribute should not be needed as child classes inherit from the parent. Whether or not a class contains magic methods has not been taken into account, as a review of the currently existing magic methods has shown that those are generally not sturdy enough and often even set dynamic properties (which they should not). See the [https://www.youtube.com/watch?v=vDZWepDQQVE live stream from August 16, 2022] for more details. This commit only affects classes in the `src` directory of WordPress core. * Tests should not get this attribute, but should be fixed to not use dynamic properties instead. Patches for this are already being committed under ticket #56033. * While a number bundled themes (2014, 2019, 2020, 2021) contain classes, they are not a part of this commit and may be updated separately. Reference: [https://wiki.php.net/rfc/deprecate_dynamic_properties PHP RFC: Deprecate dynamic properties]. Follow-up to [53922]. Props jrf, hellofromTonya, markjaquith, peterwilsoncc, costdev, knutsp, aristath. See #56513, #56034. Built from https://develop.svn.wordpress.org/trunk@54133 git-svn-id: http://core.svn.wordpress.org/trunk@53692 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2022-09-12 11:47:14 -04:00
#[AllowDynamicProperties]
class NOOP_Translations {
public $entries = array();
public $headers = array();
public function add_entry( $entry ) {
return true;
}
/**
* @param string $header
* @param string $value
*/
public function set_header( $header, $value ) {
}
/**
* @param array $headers
*/
public function set_headers( $headers ) {
}
/**
* @param string $header
* @return false
*/
public function get_header( $header ) {
return false;
}
/**
* @param Translation_Entry $entry
* @return false
*/
public function translate_entry( &$entry ) {
return false;
}
/**
* @param string $singular
* @param string $context
*/
public function translate( $singular, $context = null ) {
return $singular;
}
/**
* @param int $count
* @return bool
*/
public function select_plural_form( $count ) {
return 1 === (int) $count ? 0 : 1;
}
/**
* @return int
*/
public function get_plural_forms_count() {
return 2;
}
/**
* @param string $singular
* @param string $plural
* @param int $count
* @param string $context
*/
public function translate_plural( $singular, $plural, $count, $context = null ) {
return 1 === (int) $count ? $singular : $plural;
}
/**
* @param object $other
*/
public function merge_with( &$other ) {
}
}
endif;