function load($file = null)
{
if (!isset($file)) {
$file = $this->file;
}
// open MO file
if (!is_resource($this->_handle = @fopen($file, 'rb'))) {
return false;
}
// lock MO file shared
if (!@flock($this->_handle, LOCK_SH)) {
@fclose($this->_handle);
return false;
}
// read (part of) magic number from MO file header and define endianess
//unpack returns a reference????
$unpacked = unpack('c', $this->_read(4));
switch ($magic = array_shift($unpacked)) {
case -34:
$be = false;
break;
case -107:
$be = true;
break;
default:
return false;
}
// check file format revision - we currently only support 0
if (0 !== ($_rev = $this->_readInt($be))) {
return false;
}
// count of strings in this file
$count = $this->_readInt($be);
// offset of hashing table of the msgids
$offset_original = $this->_readInt($be);
// offset of hashing table of the msgstrs
$offset_translat = $this->_readInt($be);
// move to msgid hash table
fseek($this->_handle, $offset_original);
// read lengths and offsets of msgids
$original = array();
for ($i = 0; $i < $count; $i++) {
$original[$i] = array('length' => $this->_readInt($be), 'offset' => $this->_readInt($be));
}
// move to msgstr hash table
fseek($this->_handle, $offset_translat);
// read lengths and offsets of msgstrs
$translat = array();
for ($i = 0; $i < $count; $i++) {
$translat[$i] = array('length' => $this->_readInt($be), 'offset' => $this->_readInt($be));
}
// read all
for ($i = 0; $i < $count; $i++) {
$this->strings[$this->_readStr($original[$i])] = $this->_readStr($translat[$i]);
}
// done
@flock($this->_handle, LOCK_UN);
@fclose($this->_handle);
$this->_handle = null;
// check for meta info
if (isset($this->strings[''])) {
$this->meta = parent::meta2array($this->strings['']);
unset($this->strings['']);
}
return true;
}
