CSV import, avoid product images get stored locally.

if(substr($image,0,7)=='http://'||substr($image,0,8)=='https://'){
					$parts = explode('/',$image);
					$name = array_pop($parts);
					$name = explode('?',$name);
					$name = array_shift($name);
					$name = urldecode($name);
					if(!file_exists($this->uploadFolder.$name)){
						$content = file_get_contents($image);
						JFile::write($this->uploadFolder.$name,$content);
					}else{
						$size = $this->getSizeFile($image);
						if($size!=filesize($this->uploadFolder.$name)){
							$name=$size.'_'.$name;
							if(!file_exists($this->uploadFolder.$name)){
								$content = file_get_contents($image);
								JFile::write($this->uploadFolder.$name,$content);
							}
						}
					}
					if(file_exists($this->uploadFolder.$name) && (filesize($this->uploadFolder.$name) > 0 || filesize($this->uploadFolder.$name) === false)){
						$product->images[$k] = $name;
					}else{
						$unset[]=$k;
					}
				}