/**
* Apply a file range to a file and set the end offset.
*
* If an invalid range is requested a 416 Status code will be used
* in the response.
*
* @param File $file The file to set a range on.
* @param string $httpRange The range to use.
* @return void
*/
protected function _fileRange($file, $httpRange)
{
list(, $range) = explode('=', $httpRange);
list($start, $end) = explode('-', $range);
$fileSize = $file->size();
$lastByte = $fileSize - 1;
if ($start === '') {
$start = $fileSize - $end;
$end = $lastByte;
}
if ($end === '') {
$end = $lastByte;
}
if ($start > $end || $end > $lastByte || $start > $lastByte) {
$this->statusCode(416);
$this->header(array('Content-Range' => 'bytes 0-' . $lastByte . '/' . $fileSize));
return;
}
$this->header(array('Content-Length' => $end - $start + 1, 'Content-Range' => 'bytes ' . $start . '-' . $end . '/' . $fileSize));
$this->statusCode(206);
$this->_fileRange = array($start, $end);
}
/**
* testAppend method
*
* @return void
*/
public function testAppend()
{
if (!($tmpFile = $this->_getTmpFile())) {
return false;
}
if (file_exists($tmpFile)) {
unlink($tmpFile);
}
$TmpFile = new File($tmpFile);
$this->assertFalse(file_exists($tmpFile));
$fragments = array('CakePHP\'s', ' test suite', ' was here ...');
$data = null;
$size = 0;
foreach ($fragments as $fragment) {
$r = $TmpFile->append($fragment);
$this->assertTrue($r);
$this->assertTrue(file_exists($tmpFile));
$data = $data . $fragment;
$this->assertEquals($data, file_get_contents($tmpFile));
$newSize = $TmpFile->size();
$this->assertTrue($newSize > $size);
$size = $newSize;
$TmpFile->close();
}
$TmpFile->append('');
$this->assertEquals($data, file_get_contents($tmpFile));
$TmpFile->close();
}
