/**
* Returns the name of a file that doesn't yet exist in this directory
*
* Without a prefix or extension, this will create a filename 15 characters
* long. If you change the $moreEntropy flag to true, the result will be
* 25 characters
*
* @param String $prefix A prefix to attach to the file name
* @param String $extension The extension the file should have
* @param Boolean $moreEntropy Increases the length of the generated filename
* @return \r8\FileSys\File
*/
public function getUniqueFile($prefix = null, $extension = null, $moreEntropy = FALSE)
{
if (!$this->dirExists()) {
throw new \r8\Exception\Variable("Dir", "No directory has been set for this instance");
}
$file = new \r8\FileSys\File();
$file->setDir($this->getRawDir());
if (!\r8\isVague($extension)) {
$file->setExt($extension);
}
$prefix = \r8\isVague($prefix) ? null : (string) $prefix;
$moreEntropy = (bool) $moreEntropy;
do {
if ($moreEntropy) {
$uniq = md5(uniqid(null, true));
} else {
$uniq = substr(md5(uniqid()), 0, 15);
}
$file->setFileName($prefix . $uniq);
} while ($file->exists());
return $file;
}
public function testGetBasename()
{
$file = new \r8\FileSys\File();
$this->assertNull($file->getBasename());
$file->setExt("php");
$this->assertNull($file->getBasename());
$file->setFilename("example");
$this->assertSame("example.php", $file->getBasename());
$file->clearExt();
$this->assertSame("example", $file->getBasename());
$file->clearFilename();
$this->assertNull($file->getBasename());
}
