chunk file into smaller pieces

fileChuncker.go

package util


// chunk the file into smaller pieces
func Chunks(path string) (parts uint64, filepath string) {

	file := openFile(path)
	defer closeFile(file)
	fileInfo := fileInfo(file)

	// simply, file 's size is divided by
	// pre-defined chink size
	size := fileInfo.Size()
	parts = uint64(math.Ceil(float64(size) / float64(FileChunk)))

	return parts, path
}


// get the basic information about file
// proper error handled
func fileInfo(file *os.File) os.FileInfo {
	fileInfo, err := file.Stat()
	if err != nil {
		log.Fatalln(ErrFileInfoNotAvailable, err)
	}

	return fileInfo
}