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extern crate rustc_serialize;
extern crate uuid;
use rustc_serialize::base64::ToBase64;
use rustc_serialize::base64::FromBase64;
use rustc_serialize::base64::URL_SAFE;
use rustc_serialize::base64::FromBase64Error;
use uuid::ParseError;
use uuid::Uuid;
#[derive(Debug)]
pub enum ConvertError{
ParseError(ParseError),
FromBase64Error(FromBase64Error)
}
pub trait ToBlob{
fn to_blob(&self) -> String;
}
impl ToBlob for Uuid{
fn to_blob(&self) -> String{
self.as_bytes().to_base64(URL_SAFE)
}
}
pub trait FromBlob{
fn to_uuid(&self) -> Result<Uuid, ConvertError>;
}
impl FromBlob for str{
fn to_uuid(&self) -> Result<Uuid, ConvertError>{
match self.from_base64(){
Ok(bytes) => {
match Uuid::from_bytes(&bytes){
Ok(uuid) => Ok(uuid),
Err(e) => Err(ConvertError::ParseError(e))
}
},
Err(e) => {
Err(ConvertError::FromBase64Error(e))
}
}
}
}
#[test]
fn test_blobs() {
let uuid_str = "557c8018-5e21-4b74-8bb0-9040e2e8ead1";
println!("uuid_str: {}", uuid_str);
let blob = "VXyAGF4hS3SLsJBA4ujq0Q";
println!("blob: {}", blob);
let uuid = Uuid::parse_str(uuid_str).unwrap();
assert_eq!(uuid, blob.to_uuid().unwrap());
assert_eq!(blob, uuid.to_blob());
}
#[test]
fn test_more_blobs(){
for _ in 0..10{
let uuid = Uuid::new_v4();
let blob = uuid.to_blob();
assert_eq!(blob.chars().count(), 22);
println!("{} | {}",uuid,blob);
}
}
pub fn uuid_to_blob(uuid: &Uuid) -> String{
uuid.to_blob()
}
pub fn blob_to_uuid(blob: &str) -> Result<Uuid, ConvertError>{
blob.to_uuid()
}