cram 0.1.2

Cram realy awesome middleware
Documentation 
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pub fn deserialize_label_message( mut vec :  Vec<u8> ) -> ( String, Vec<u8>){

    // get size data of label (vec) and label + message (label_and_message)
    let mut label_and_message = vec.split_off(8);
    
    // get size from vec 
    let mut array = [0; 8];
    let bytes = &vec[..array.len()];  // panics if not enough data
    array.copy_from_slice(bytes); 
    
    // split label and message
    let message = label_and_message.split_off(  usize::from_be_bytes(array) );
    
    ( String::from_utf8(label_and_message).unwrap(), message )
}

pub fn serialize_label_message( label : String, msg : Vec<u8>) -> Vec<u8>{
    
    // put size of label
    let mut vec = usize::to_be_bytes( label.len() ).to_vec();
    assert_eq!(8,vec.len());
    // put label
    vec.extend( label.as_bytes().to_vec());
    // put msg
    vec.extend(msg);

    vec
}


pub fn put_type( message_type : i8,  bytes : &mut Vec<u8>){
     bytes.insert(0, message_type as u8)
}

pub fn get_type( bytes : &mut Vec<u8>) -> i8 {
    bytes.remove(0) as i8
}