395 lines
9.8 KiB
PHP
395 lines
9.8 KiB
PHP
<?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 ) ) :
|
|
#[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
|
|
*/
|
|
#[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;
|