WordPress/wp-includes/pomo/mo.php

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<?php
/**
* Class for working with MO files
*
* @version $Id: mo.php 221 2009-09-07 21:08:21Z nbachiyski $
* @package pomo
* @subpackage mo
*/
require_once dirname(__FILE__) . '/translations.php';
require_once dirname(__FILE__) . '/streams.php';
if ( !class_exists( 'MO' ) ):
class MO extends Gettext_Translations {
var $_nplurals = 2;
/**
* Fills up with the entries from MO file $filename
*
* @param string $filename MO file to load
*/
function import_from_file($filename) {
$reader = new POMO_CachedIntFileReader($filename);
if (isset($reader->error)) {
return false;
}
return $this->import_from_reader($reader);
}
function export_to_file($filename) {
$fh = fopen($filename, 'wb');
if ( !$fh ) return false;
$entries = array_filter($this->entries, create_function('$e', 'return !empty($e->translations);'));
ksort($entries);
$magic = 0x950412de;
$revision = 0;
$total = count($entries) + 1; // all the headers are one entry
$originals_lenghts_addr = 28;
$translations_lenghts_addr = $originals_lenghts_addr + 8 * $total;
$size_of_hash = 0;
$hash_addr = $translations_lenghts_addr + 8 * $total;
$current_addr = $hash_addr;
fwrite($fh, pack('V*', $magic, $revision, $total, $originals_lenghts_addr,
$translations_lenghts_addr, $size_of_hash, $hash_addr));
fseek($fh, $originals_lenghts_addr);
// headers' msgid is an empty string
fwrite($fh, pack('VV', 0, $current_addr));
$current_addr++;
$originals_table = chr(0);
foreach($entries as $entry) {
$originals_table .= $this->export_original($entry) . chr(0);
$length = strlen($this->export_original($entry));
fwrite($fh, pack('VV', $length, $current_addr));
$current_addr += $length + 1; // account for the NULL byte after
}
$exported_headers = $this->export_headers();
fwrite($fh, pack('VV', strlen($exported_headers), $current_addr));
$current_addr += strlen($exported_headers) + 1;
$translations_table = $exported_headers . chr(0);
foreach($entries as $entry) {
$translations_table .= $this->export_translations($entry) . chr(0);
$length = strlen($this->export_translations($entry));
fwrite($fh, pack('VV', $length, $current_addr));
$current_addr += $length + 1;
}
fwrite($fh, $originals_table);
fwrite($fh, $translations_table);
fclose($fh);
}
function export_original($entry) {
//TODO: warnings for control characters
$exported = $entry->singular;
if ($entry->is_plural) $exported .= chr(0).$entry->plural;
if (!is_null($entry->context)) $exported = $entry->context . chr(4) . $exported;
return $exported;
}
function export_translations($entry) {
//TODO: warnings for control characters
return implode(chr(0), $entry->translations);
}
function export_headers() {
$exported = '';
foreach($this->headers as $header => $value) {
$exported.= "$header: $value\n";
}
return $exported;
}
function get_byteorder($magic) {
// The magic is 0x950412de
// bug in PHP 5.0.2, see https://savannah.nongnu.org/bugs/?func=detailitem&item_id=10565
$magic_little = (int) - 1794895138;
$magic_little_64 = (int) 2500072158;
// 0xde120495
$magic_big = ((int) - 569244523) & 0xFFFFFFFF;
if ($magic_little == $magic || $magic_little_64 == $magic) {
return 'little';
} else if ($magic_big == $magic) {
return 'big';
} else {
return false;
}
}
function import_from_reader($reader) {
$reader->setEndian('little');
$endian = MO::get_byteorder($reader->readint32());
if (false === $endian) {
return false;
}
$reader->setEndian($endian);
$revision = $reader->readint32();
$total = $reader->readint32();
// get addresses of array of lenghts and offsets for original string and translations
$originals_lenghts_addr = $reader->readint32();
$translations_lenghts_addr = $reader->readint32();
$reader->seekto($originals_lenghts_addr);
$originals_lenghts = $reader->readint32array($total * 2); // each of
$reader->seekto($translations_lenghts_addr);
$translations_lenghts = $reader->readint32array($total * 2);
$length = create_function('$i', 'return $i * 2 + 1;');
$offset = create_function('$i', 'return $i * 2 + 2;');
for ($i = 0; $i < $total; ++$i) {
$reader->seekto($originals_lenghts[$offset($i)]);
$original = $reader->read($originals_lenghts[$length($i)]);
$reader->seekto($translations_lenghts[$offset($i)]);
$translation = $reader->read($translations_lenghts[$length($i)]);
if ('' == $original) {
$this->set_headers($this->make_headers($translation));
} else {
$this->add_entry($this->make_entry($original, $translation));
}
}
return true;
}
/**
* @static
*/
function &make_entry($original, $translation) {
$args = array();
// look for context
$parts = explode(chr(4), $original);
if (isset($parts[1])) {
$original = $parts[1];
$args['context'] = $parts[0];
}
// look for plural original
$parts = explode(chr(0), $original);
$args['singular'] = $parts[0];
if (isset($parts[1])) {
$args['plural'] = $parts[1];
}
// plural translations are also separated by \0
$args['translations'] = explode(chr(0), $translation);
$entry = & new Translation_Entry($args);
return $entry;
}
function select_plural_form($count) {
return $this->gettext_select_plural_form($count);
}
function get_plural_forms_count() {
return $this->_nplurals;
}
}
endif;