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aaf99e6913
WordPress' code just... wasn't. This is now dealt with. Props jrf, pento, netweb, GaryJ, jdgrimes, westonruter, Greg Sherwood from PHPCS, and everyone who's ever contributed to WPCS and PHPCS. Fixes #41057. Built from https://develop.svn.wordpress.org/trunk@42343 git-svn-id: http://core.svn.wordpress.org/trunk@42172 1a063a9b-81f0-0310-95a4-ce76da25c4cd
380 lines
9.4 KiB
PHP
380 lines
9.4 KiB
PHP
<?php
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/**
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* Class for a set of entries for translation and their associated headers
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*
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* @version $Id: translations.php 1157 2015-11-20 04:30:11Z dd32 $
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* @package pomo
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* @subpackage translations
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*/
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require_once dirname( __FILE__ ) . '/plural-forms.php';
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require_once dirname( __FILE__ ) . '/entry.php';
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if ( ! class_exists( 'Translations', false ) ) :
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class Translations {
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var $entries = array();
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var $headers = array();
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/**
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* Add entry to the PO structure
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*
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* @param array|Translation_Entry $entry
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* @return bool true on success, false if the entry doesn't have a key
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*/
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function add_entry( $entry ) {
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if ( is_array( $entry ) ) {
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$entry = new Translation_Entry( $entry );
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}
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$key = $entry->key();
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if ( false === $key ) {
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return false;
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}
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$this->entries[ $key ] = &$entry;
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return true;
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}
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/**
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* @param array|Translation_Entry $entry
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* @return bool
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*/
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function add_entry_or_merge( $entry ) {
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if ( is_array( $entry ) ) {
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$entry = new Translation_Entry( $entry );
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}
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$key = $entry->key();
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if ( false === $key ) {
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return false;
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}
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if ( isset( $this->entries[ $key ] ) ) {
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$this->entries[ $key ]->merge_with( $entry );
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} else {
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$this->entries[ $key ] = &$entry;
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}
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return true;
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}
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/**
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* Sets $header PO header to $value
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*
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* If the header already exists, it will be overwritten
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*
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* TODO: this should be out of this class, it is gettext specific
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*
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* @param string $header header name, without trailing :
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* @param string $value header value, without trailing \n
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*/
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function set_header( $header, $value ) {
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$this->headers[ $header ] = $value;
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}
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/**
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* @param array $headers
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*/
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function set_headers( $headers ) {
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foreach ( $headers as $header => $value ) {
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$this->set_header( $header, $value );
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}
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}
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/**
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* @param string $header
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*/
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function get_header( $header ) {
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return isset( $this->headers[ $header ] ) ? $this->headers[ $header ] : false;
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}
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/**
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* @param Translation_Entry $entry
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*/
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function translate_entry( &$entry ) {
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$key = $entry->key();
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return isset( $this->entries[ $key ] ) ? $this->entries[ $key ] : false;
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}
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/**
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* @param string $singular
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* @param string $context
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* @return string
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*/
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function translate( $singular, $context = null ) {
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$entry = new Translation_Entry(
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array(
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'singular' => $singular,
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'context' => $context,
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)
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);
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$translated = $this->translate_entry( $entry );
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return ( $translated && ! empty( $translated->translations ) ) ? $translated->translations[0] : $singular;
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}
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/**
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* Given the number of items, returns the 0-based index of the plural form to use
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*
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* Here, in the base Translations class, the common logic for English is implemented:
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* 0 if there is one element, 1 otherwise
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*
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* This function should be overridden by the sub-classes. For example MO/PO can derive the logic
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* from their headers.
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*
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* @param integer $count number of items
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*/
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function select_plural_form( $count ) {
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return 1 == $count ? 0 : 1;
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}
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/**
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* @return int
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*/
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function get_plural_forms_count() {
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return 2;
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}
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/**
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* @param string $singular
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* @param string $plural
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* @param int $count
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* @param string $context
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*/
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function translate_plural( $singular, $plural, $count, $context = null ) {
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$entry = new Translation_Entry(
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array(
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'singular' => $singular,
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'plural' => $plural,
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'context' => $context,
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)
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);
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$translated = $this->translate_entry( $entry );
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$index = $this->select_plural_form( $count );
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$total_plural_forms = $this->get_plural_forms_count();
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if ( $translated && 0 <= $index && $index < $total_plural_forms &&
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is_array( $translated->translations ) &&
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isset( $translated->translations[ $index ] ) ) {
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return $translated->translations[ $index ];
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} else {
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return 1 == $count ? $singular : $plural;
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}
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}
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/**
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* Merge $other in the current object.
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*
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* @param Object $other Another Translation object, whose translations will be merged in this one (passed by reference).
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* @return void
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*/
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function merge_with( &$other ) {
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foreach ( $other->entries as $entry ) {
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$this->entries[ $entry->key() ] = $entry;
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}
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}
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/**
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* @param object $other
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*/
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function merge_originals_with( &$other ) {
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foreach ( $other->entries as $entry ) {
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if ( ! isset( $this->entries[ $entry->key() ] ) ) {
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$this->entries[ $entry->key() ] = $entry;
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} else {
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$this->entries[ $entry->key() ]->merge_with( $entry );
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}
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}
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}
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}
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class Gettext_Translations extends Translations {
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/**
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* The gettext implementation of select_plural_form.
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*
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* It lives in this class, because there are more than one descendand, which will use it and
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* they can't share it effectively.
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*
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* @param int $count
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*/
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function gettext_select_plural_form( $count ) {
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if ( ! isset( $this->_gettext_select_plural_form ) || is_null( $this->_gettext_select_plural_form ) ) {
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list( $nplurals, $expression ) = $this->nplurals_and_expression_from_header( $this->get_header( 'Plural-Forms' ) );
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$this->_nplurals = $nplurals;
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$this->_gettext_select_plural_form = $this->make_plural_form_function( $nplurals, $expression );
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}
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return call_user_func( $this->_gettext_select_plural_form, $count );
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}
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/**
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* @param string $header
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* @return array
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*/
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function nplurals_and_expression_from_header( $header ) {
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if ( preg_match( '/^\s*nplurals\s*=\s*(\d+)\s*;\s+plural\s*=\s*(.+)$/', $header, $matches ) ) {
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$nplurals = (int) $matches[1];
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$expression = trim( $matches[2] );
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return array( $nplurals, $expression );
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} else {
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return array( 2, 'n != 1' );
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}
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}
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/**
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* Makes a function, which will return the right translation index, according to the
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* plural forms header
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*
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* @param int $nplurals
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* @param string $expression
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*/
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function make_plural_form_function( $nplurals, $expression ) {
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try {
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$handler = new Plural_Forms( rtrim( $expression, ';' ) );
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return array( $handler, 'get' );
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} catch ( Exception $e ) {
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// Fall back to default plural-form function.
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return $this->make_plural_form_function( 2, 'n != 1' );
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}
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}
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/**
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* Adds parentheses to the inner parts of ternary operators in
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* plural expressions, because PHP evaluates ternary oerators from left to right
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*
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* @param string $expression the expression without parentheses
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* @return string the expression with parentheses added
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*/
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function parenthesize_plural_exression( $expression ) {
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$expression .= ';';
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$res = '';
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$depth = 0;
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for ( $i = 0; $i < strlen( $expression ); ++$i ) {
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$char = $expression[ $i ];
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switch ( $char ) {
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case '?':
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$res .= ' ? (';
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$depth++;
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break;
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case ':':
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$res .= ') : (';
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break;
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case ';':
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$res .= str_repeat( ')', $depth ) . ';';
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$depth = 0;
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break;
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default:
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$res .= $char;
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}
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}
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return rtrim( $res, ';' );
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}
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/**
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* @param string $translation
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* @return array
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*/
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function make_headers( $translation ) {
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$headers = array();
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// sometimes \ns are used instead of real new lines
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$translation = str_replace( '\n', "\n", $translation );
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$lines = explode( "\n", $translation );
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foreach ( $lines as $line ) {
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$parts = explode( ':', $line, 2 );
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if ( ! isset( $parts[1] ) ) {
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continue;
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}
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$headers[ trim( $parts[0] ) ] = trim( $parts[1] );
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}
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return $headers;
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}
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/**
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* @param string $header
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* @param string $value
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*/
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function set_header( $header, $value ) {
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parent::set_header( $header, $value );
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if ( 'Plural-Forms' == $header ) {
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list( $nplurals, $expression ) = $this->nplurals_and_expression_from_header( $this->get_header( 'Plural-Forms' ) );
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$this->_nplurals = $nplurals;
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$this->_gettext_select_plural_form = $this->make_plural_form_function( $nplurals, $expression );
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}
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}
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}
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endif;
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if ( ! class_exists( 'NOOP_Translations', false ) ) :
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/**
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* Provides the same interface as Translations, but doesn't do anything
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*/
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class NOOP_Translations {
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var $entries = array();
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var $headers = array();
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function add_entry( $entry ) {
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return true;
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}
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/**
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* @param string $header
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* @param string $value
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*/
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function set_header( $header, $value ) {
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}
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/**
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* @param array $headers
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*/
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function set_headers( $headers ) {
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}
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/**
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* @param string $header
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* @return false
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*/
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function get_header( $header ) {
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return false;
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}
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/**
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* @param Translation_Entry $entry
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* @return false
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*/
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function translate_entry( &$entry ) {
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return false;
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}
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/**
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* @param string $singular
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* @param string $context
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*/
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function translate( $singular, $context = null ) {
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return $singular;
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}
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/**
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* @param int $count
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* @return bool
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*/
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function select_plural_form( $count ) {
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return 1 == $count ? 0 : 1;
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}
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/**
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* @return int
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*/
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function get_plural_forms_count() {
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return 2;
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}
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/**
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* @param string $singular
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* @param string $plural
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* @param int $count
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* @param string $context
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*/
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function translate_plural( $singular, $plural, $count, $context = null ) {
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return 1 == $count ? $singular : $plural;
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}
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/**
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* @param object $other
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*/
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function merge_with( &$other ) {
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}
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}
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endif;
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