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git-svn-id: http://svn.automattic.com/wordpress/trunk@11626 1a063a9b-81f0-0310-95a4-ce76da25c4cd
186 lines
5.2 KiB
PHP
186 lines
5.2 KiB
PHP
<?php
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/**
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* Class for working with MO files
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*
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* @version $Id: mo.php 106 2009-04-23 19:48:22Z nbachiyski $
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* @package pomo
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* @subpackage mo
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*/
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require_once dirname(__FILE__) . '/translations.php';
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require_once dirname(__FILE__) . '/streams.php';
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class MO extends Gettext_Translations {
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var $_nplurals = 2;
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/**
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* Fills up with the entries from MO file $filename
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*
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* @param string $filename MO file to load
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*/
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function import_from_file($filename) {
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$reader = new POMO_CachedIntFileReader($filename);
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if (isset($reader->error)) {
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return false;
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}
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return $this->import_from_reader($reader);
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}
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function export_to_file($filename) {
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$fh = fopen($filename, 'wb');
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if ( !$fh ) return false;
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$entries = array_filter($this->entries, create_function('$e', 'return !empty($e->translations);'));
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ksort($entries);
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$magic = 0x950412de;
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$revision = 0;
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$total = count($entries) + 1; // all the headers are one entry
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$originals_lenghts_addr = 28;
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$translations_lenghts_addr = $originals_lenghts_addr + 8 * $total;
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$size_of_hash = 0;
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$hash_addr = $translations_lenghts_addr + 8 * $total;
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$current_addr = $hash_addr;
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fwrite($fh, pack('V*', $magic, $revision, $total, $originals_lenghts_addr,
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$translations_lenghts_addr, $size_of_hash, $hash_addr));
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fseek($fh, $originals_lenghts_addr);
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// headers' msgid is an empty string
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fwrite($fh, pack('VV', 0, $current_addr));
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$current_addr++;
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$originals_table = chr(0);
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foreach($entries as $entry) {
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$originals_table .= $this->export_original($entry) . chr(0);
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$length = strlen($this->export_original($entry));
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fwrite($fh, pack('VV', $length, $current_addr));
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$current_addr += $length + 1; // account for the NULL byte after
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}
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$exported_headers = $this->export_headers();
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fwrite($fh, pack('VV', strlen($exported_headers), $current_addr));
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$current_addr += strlen($exported_headers) + 1;
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$translations_table = $exported_headers . chr(0);
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foreach($entries as $entry) {
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$translations_table .= $this->export_translations($entry) . chr(0);
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$length = strlen($this->export_translations($entry));
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fwrite($fh, pack('VV', $length, $current_addr));
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$current_addr += $length + 1;
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}
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fwrite($fh, $originals_table);
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fwrite($fh, $translations_table);
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fclose($fh);
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}
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function export_original($entry) {
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//TODO: warnings for control characters
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$exported = $entry->singular;
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if ($entry->is_plural) $exported .= chr(0).$entry->plural;
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if (!is_null($entry->context)) $exported = $entry->context . chr(4) . $exported;
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return $exported;
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}
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function export_translations($entry) {
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//TODO: warnings for control characters
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return implode(chr(0), $entry->translations);
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}
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function export_headers() {
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$exported = '';
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foreach($this->headers as $header => $value) {
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$exported.= "$header: $value\n";
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}
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return $exported;
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}
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function get_byteorder($magic) {
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// The magic is 0x950412de
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// bug in PHP 5.0.2, see https://savannah.nongnu.org/bugs/?func=detailitem&item_id=10565
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$magic_little = (int) - 1794895138;
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$magic_little_64 = (int) 2500072158;
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// 0xde120495
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$magic_big = ((int) - 569244523) && 0xFFFFFFFF;
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if ($magic_little == $magic || $magic_little_64 == $magic) {
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return 'little';
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} else if ($magic_big == $magic) {
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return 'big';
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} else {
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return false;
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}
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}
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function import_from_reader($reader) {
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$reader->setEndian('little');
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$endian = MO::get_byteorder($reader->readint32());
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if (false === $endian) {
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return false;
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}
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$reader->setEndian($endian);
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$revision = $reader->readint32();
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$total = $reader->readint32();
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// get addresses of array of lenghts and offsets for original string and translations
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$originals_lenghts_addr = $reader->readint32();
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$translations_lenghts_addr = $reader->readint32();
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$reader->seekto($originals_lenghts_addr);
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$originals_lenghts = $reader->readint32array($total * 2); // each of
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$reader->seekto($translations_lenghts_addr);
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$translations_lenghts = $reader->readint32array($total * 2);
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$length = create_function('$i', 'return $i * 2 + 1;');
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$offset = create_function('$i', 'return $i * 2 + 2;');
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for ($i = 0; $i < $total; ++$i) {
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$reader->seekto($originals_lenghts[$offset($i)]);
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$original = $reader->read($originals_lenghts[$length($i)]);
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$reader->seekto($translations_lenghts[$offset($i)]);
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$translation = $reader->read($translations_lenghts[$length($i)]);
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if ('' == $original) {
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$this->set_headers($this->make_headers($translation));
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} else {
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$this->add_entry($this->make_entry($original, $translation));
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}
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}
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return true;
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}
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/**
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* @static
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*/
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function &make_entry($original, $translation) {
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$args = array();
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// look for context
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$parts = explode(chr(4), $original);
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if (isset($parts[1])) {
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$original = $parts[1];
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$args['context'] = $parts[0];
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}
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// look for plural original
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$parts = explode(chr(0), $original);
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$args['singular'] = $parts[0];
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if (isset($parts[1])) {
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$args['plural'] = $parts[1];
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}
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// plural translations are also separated by \0
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$args['translations'] = explode(chr(0), $translation);
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$entry = & new Translation_Entry($args);
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return $entry;
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}
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function select_plural_form($count) {
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return $this->gettext_select_plural_form($count);
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}
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function get_plural_forms_count() {
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return $this->_nplurals;
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}
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}
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?>
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