/** * @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; }