/**
* Skip any BOM in the file
*/
private function _skipBom()
{
$bom = $this->_file->fgetc() . $this->_file->fgetc() . $this->_file->fgetc();
// If there is no bom, then remove bom will return a 3 character string.
// In that case the file position must be reset to the start of the file
if (\MUtil_Encoding::removeBOM($bom)) {
$this->_file->rewind();
}
}
/**
* Open the file and optionally restore the position
*
* @return void
*/
private function _openFile()
{
$this->_fieldMap = array();
$this->_fieldMapCount = 0;
if (!file_exists($this->_filename)) {
$this->_file = false;
return;
}
try {
$this->_file = new \SplFileObject($this->_filename, 'r');
$firstline = trim(\MUtil_Encoding::removeBOM($this->_file->current(), "\r\n"));
if ($firstline) {
$this->_fieldMap = call_user_func($this->_splitFunction, $firstline);
$this->_fieldMapCount = count($this->_fieldMap);
// Check for fields, do not run when empty
if (0 === $this->_fieldMapCount) {
$this->_file = false;
return;
}
}
// Restore old file position if any
if (null !== $this->_filepos) {
$this->_file->fseek($this->_filepos, SEEK_SET);
}
// Always move to next, even if there was no first line
$this->next();
} catch (\Exception $e) {
$this->_file = false;
}
}
