Move the old JS uploader backend libs out from the CoreLibs

They are not CoreLibs and so they moved one level up and were renamed
"FileUpload"

www/lib/FileUpload/qqFileUploader.inc

@@ -0,0 +1,112 @@
+<?php
+
+namespace FileUpload;
+
+use \FileUpload\Core\qqUploadedFileForm;
+use \FileUpload\Core\qqUploadedFileXhr;
+
+class qqFileUploader
+{
+	private $allowedExtensions = array();
+	private $sizeLimit = 10485760;
+	private $file;
+
+	public function __construct(array $allowedExtensions = array(), $sizeLimit = 10485760)
+	{
+		$allowedExtensions = array_map("strtolower", $allowedExtensions);
+
+		$this->allowedExtensions = $allowedExtensions;
+		$this->sizeLimit = $sizeLimit;
+
+		$this->checkServerSettings();
+
+		if (isset($_GET['qqfile'])) {
+			$this->file = new qqUploadedFileXhr();
+		} elseif (isset($_FILES['qqfile'])) {
+			$this->file = new qqUploadedFileForm();
+		} else {
+			$this->file = false;
+		}
+	}
+
+	private function checkServerSettings()
+	{
+		$postSize = $this->toBytes(ini_get('post_max_size'));
+		$uploadSize = $this->toBytes(ini_get('upload_max_filesize'));
+
+		if ($postSize < $this->sizeLimit || $uploadSize < $this->sizeLimit) {
+			$size = max(1, $this->sizeLimit / 1024 / 1024) . 'M';
+			die("{'error':'increase post_max_size and upload_max_filesize to $size'}");
+		}
+	}
+
+	private function toBytes($str)
+	{
+		$val = trim($str);
+		$last = strtolower($str[strlen($str)-1]);
+		switch ($last) {
+			case 'g':
+				$val *= 1024;
+				// no break
+			case 'm':
+				$val *= 1024;
+				// no break
+			case 'k':
+				$val *= 1024;
+		}
+		return $val;
+	}
+
+	/**
+	 * Returns array('success'=>true) or array('error'=>'error message')
+	 */
+	public function handleUpload($uploadDirectory, $replaceOldFile = false)
+	{
+		if (!is_writable($uploadDirectory)) {
+			return array('error' => "Server error. Upload directory isn't writable.");
+		}
+
+		if (!$this->file) {
+			return array('error' => 'No files were uploaded.');
+		}
+
+		$size = $this->file->getSize();
+
+		if ($size == 0) {
+			return array('error' => 'File is empty');
+		}
+
+		if ($size > $this->sizeLimit) {
+			return array('error' => 'File is too large');
+		}
+
+		$pathinfo = pathinfo($this->file->getName());
+		$filename = $pathinfo['filename'];
+		//$filename = md5(uniqid());
+		$ext = $pathinfo['extension'];
+
+		if ($this->allowedExtensions && !in_array(strtolower($ext), $this->allowedExtensions)) {
+			$these = implode(', ', $this->allowedExtensions);
+			return array('error' => 'File has an invalid extension, it should be one of '. $these . '.');
+		}
+
+		if (!$replaceOldFile) {
+			/// don't overwrite previous files that were uploaded
+			while (file_exists($uploadDirectory . $filename . '.' . $ext)) {
+				$filename .= rand(10, 99);
+			}
+		}
+
+		$this->uploadFileName = $uploadDirectory . $filename . '.' . $ext;
+		$this->uploadFileExt = $ext;
+
+		if ($this->file->save($uploadDirectory . $filename . '.' . $ext)) {
+			return array('success' => true);
+		} else {
+			return array('error' => 'Could not save uploaded file.' .
+				'The upload was cancelled, or server error encountered');
+		}
+	}
+}
+
+// __END__