132 lines
3.2 KiB
Rust
132 lines
3.2 KiB
Rust
use super::DBError;
|
|
use std::{collections::HashMap, fmt, str};
|
|
|
|
#[derive(Clone)]
|
|
pub struct Databases;
|
|
|
|
impl Databases {
|
|
fn new() -> Self {
|
|
Self {}
|
|
}
|
|
}
|
|
|
|
#[derive(Clone)]
|
|
pub enum CacheType {
|
|
Raw(String),
|
|
DBMap(Databases),
|
|
}
|
|
|
|
impl CacheType {
|
|
fn entry_type(&self) -> String {
|
|
match self {
|
|
CacheType::Raw(_) => "Raw".to_string(),
|
|
CacheType::DBMap(_) => "DBMap".to_string(),
|
|
}
|
|
}
|
|
|
|
pub fn to_bytes(&self) -> Vec<u8> {
|
|
let mut output = self.entry_type().into_bytes();
|
|
output.push(0);
|
|
match self {
|
|
CacheType::Raw(s) => output.append(&mut s.as_bytes().to_vec()),
|
|
CacheType::DBMap(_) => todo!(),
|
|
}
|
|
return output;
|
|
}
|
|
|
|
pub fn from_bytes(data: Vec<u8>) -> Result<CacheType, DBError> {
|
|
let mut data_iter = data.iter();
|
|
let mut letter: u8 = *data_iter.next().unwrap();
|
|
let mut header: Vec<u8> = Vec::new();
|
|
while letter != 0 {
|
|
header.push(letter.clone());
|
|
letter = *data_iter.next().unwrap();
|
|
}
|
|
let header = str::from_utf8(&header).unwrap().to_string();
|
|
match header.as_str() {
|
|
"Raw" => {
|
|
let mut output: Vec<u8> = Vec::new();
|
|
for letter in data_iter {
|
|
output.push(letter.clone());
|
|
}
|
|
Ok(CacheType::Raw(str::from_utf8(&output).unwrap().to_string()))
|
|
}
|
|
_ => Err(DBError::new("fred")),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl fmt::Display for CacheType {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
match self {
|
|
CacheType::Raw(s) => write!(f, "{}", s),
|
|
CacheType::DBMap(_) => todo!(),
|
|
}
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod databases {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn get_databases() {
|
|
Databases::new();
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod raw {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn get_bytes() {
|
|
let data = "addams";
|
|
let holder = CacheType::Raw(data.to_string());
|
|
let mut expected = holder.entry_type().into_bytes();
|
|
expected.push(0);
|
|
expected.append(&mut data.as_bytes().to_vec());
|
|
let output = holder.to_bytes();
|
|
assert_eq!(output, expected);
|
|
}
|
|
|
|
#[test]
|
|
fn from_bytes() {
|
|
let holder = CacheType::Raw("stored item".to_string());
|
|
let data = holder.to_bytes();
|
|
let output = CacheType::from_bytes(data).unwrap();
|
|
assert_eq!(output.to_string(), holder.to_string());
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod enum_ctype {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn get_raw_type() {
|
|
let holder = CacheType::Raw("nothing important".to_string());
|
|
assert_eq!(holder.entry_type(), "Raw");
|
|
}
|
|
|
|
#[test]
|
|
fn get_dbmap_type() {
|
|
let holder = CacheType::DBMap(Databases::new());
|
|
assert_eq!(holder.entry_type(), "DBMap");
|
|
}
|
|
|
|
#[test]
|
|
fn bad_file() {
|
|
let mut data: Vec<u8> = Vec::new();
|
|
let mut ctype = "jlksdfg".as_bytes().to_vec();
|
|
let mut cdata = "ghjk".as_bytes().to_vec();
|
|
data.append(&mut ctype);
|
|
data.push(0);
|
|
data.append(&mut cdata);
|
|
match CacheType::from_bytes(data) {
|
|
Ok(_) => assert!(false, "This should fail."),
|
|
Err(_) => (),
|
|
}
|
|
}
|
|
}
|