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Edit File: mo.php
<?php /** * Class for working with MO files * * @version $Id: mo.php 1157 2015-11-20 04:30:11Z dd32 $ * @package pomo * @subpackage mo */ require_once dirname(__FILE__) . '/translations.php'; require_once dirname(__FILE__) . '/streams.php'; if ( ! class_exists( 'MO', false ) ): 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) { $reader = new POMO_FileReader($filename); if (!$reader->is_resource()) return false; return $this->import_from_reader($reader); } /** * @param string $filename * @return bool */ function export_to_file($filename) { $fh = fopen($filename, 'wb'); if ( !$fh ) return false; $res = $this->export_to_file_handle( $fh ); fclose($fh); return $res; } /** * @return string|false */ function export() { $tmp_fh = fopen("php://temp", 'r+'); if ( !$tmp_fh ) return false; $this->export_to_file_handle( $tmp_fh ); rewind( $tmp_fh ); return stream_get_contents( $tmp_fh ); } /** * @param Translation_Entry $entry * @return bool */ function is_entry_good_for_export( $entry ) { if ( empty( $entry->translations ) ) { return false; } if ( !array_filter( $entry->translations ) ) { return false; } return true; } /** * @param resource $fh * @return true */ function export_to_file_handle($fh) { $entries = array_filter( $this->entries, array( $this, 'is_entry_good_for_export' ) ); ksort($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); $reader = new POMO_Reader(); foreach($entries as $entry) { $originals_table .= $this->export_original($entry) . chr(0); $length = $reader->strlen($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', $reader->strlen($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 = $reader->strlen($this->export_translations($entry)); fwrite($fh, pack('VV', $length, $current_addr)); $current_addr += $length + 1; } fwrite($fh, $originals_table); fwrite($fh, $translations_table); return true; } /** * @param Translation_Entry $entry * @return string */ function export_original($entry) { //TODO: warnings for control characters $exported = $entry->singular; if ($entry->is_plural) $exported .= chr(0).$entry->plural; if ($entry->context) $exported = $entry->context . chr(4) . $exported; return $exported; } /** * @param Translation_Entry $entry * @return string */ function export_translations($entry) { //TODO: warnings for control characters return $entry->is_plural ? implode(chr(0), $entry->translations) : $entry->translations[0]; } /** * @return string */ function export_headers() { $exported = ''; foreach($this->headers as $header => $value) { $exported.= "$header: $value\n"; } return $exported; } /** * @param int $magic * @return string|false */ function get_byteorder($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; } } /** * @param POMO_FileReader $reader */ function import_from_reader($reader) { $endian_string = MO::get_byteorder($reader->readint32()); if (false === $endian_string) { return false; } $reader->setEndian($endian_string); $endian = ('big' == $endian_string)? 'N' : 'V'; $header = $reader->read(24); if ($reader->strlen($header) != 24) return false; // parse header $header = unpack("{$endian}revision/{$endian}total/{$endian}originals_lenghts_addr/{$endian}translations_lenghts_addr/{$endian}hash_length/{$endian}hash_addr", $header); if (!is_array($header)) return false; // support revision 0 of MO format specs, only if ( $header['revision'] != 0 ) { return false; } // seek to data blocks $reader->seekto( $header['originals_lenghts_addr'] ); // read originals' indices $originals_lengths_length = $header['translations_lenghts_addr'] - $header['originals_lenghts_addr']; if ( $originals_lengths_length != $header['total'] * 8 ) { return false; } $originals = $reader->read($originals_lengths_length); if ( $reader->strlen( $originals ) != $originals_lengths_length ) { return false; } // read translations' indices $translations_lenghts_length = $header['hash_addr'] - $header['translations_lenghts_addr']; if ( $translations_lenghts_length != $header['total'] * 8 ) { return false; } $translations = $reader->read($translations_lenghts_length); if ( $reader->strlen( $translations ) != $translations_lenghts_length ) { return false; } // transform raw data into set of indices $originals = $reader->str_split( $originals, 8 ); $translations = $reader->str_split( $translations, 8 ); // skip hash table $strings_addr = $header['hash_addr'] + $header['hash_length'] * 4; $reader->seekto($strings_addr); $strings = $reader->read_all(); $reader->close(); for ( $i = 0; $i < $header['total']; $i++ ) { $o = unpack( "{$endian}length/{$endian}pos", $originals[$i] ); $t = unpack( "{$endian}length/{$endian}pos", $translations[$i] ); if ( !$o || !$t ) return false; // adjust offset due to reading strings to separate space before $o['pos'] -= $strings_addr; $t['pos'] -= $strings_addr; $original = $reader->substr( $strings, $o['pos'], $o['length'] ); $translation = $reader->substr( $strings, $t['pos'], $t['length'] ); if ('' === $original) { $this->set_headers($this->make_headers($translation)); } else { $entry = &$this->make_entry($original, $translation); $this->entries[$entry->key()] = &$entry; } } return true; } /** * Build a Translation_Entry from original string and translation strings, * found in a MO file * * @static * @param string $original original string to translate from MO file. Might contain * 0x04 as context separator or 0x00 as singular/plural separator * @param string $translation translation string from MO file. Might contain * 0x00 as a plural translations separator */ function &make_entry($original, $translation) { $entry = new Translation_Entry(); // look for context $parts = explode(chr(4), $original); if (isset($parts[1])) { $original = $parts[1]; $entry->context = $parts[0]; } // look for plural original $parts = explode(chr(0), $original); $entry->singular = $parts[0]; if (isset($parts[1])) { $entry->is_plural = true; $entry->plural = $parts[1]; } // plural translations are also separated by \0 $entry->translations = explode(chr(0), $translation); return $entry; } /** * @param int $count * @return string */ function select_plural_form($count) { return $this->gettext_select_plural_form($count); } /** * @return int */ function get_plural_forms_count() { return $this->_nplurals; } } endif;
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