xp3/index/
mod.rs

1/*
2 * Created on Tue Dec 15 2020
3 *
4 * Copyright (c) storycraft. Licensed under the Apache Licence 2.0.
5 */
6
7use std::io::{Read, Write};
8
9use byteorder::{LittleEndian, ReadBytesExt, WriteBytesExt};
10
11use super::XP3Error;
12
13pub mod file;
14
15#[derive(Debug, Clone)]
16/// General XP3 index
17pub struct XP3Index {
18
19    pub identifier: u32,
20    pub data: Vec<u8>
21
22}
23
24impl XP3Index {
25
26    /// Read xp3 index from stream.
27    /// Returns read size, XP3Index tuple.
28    pub fn from_bytes(stream: &mut impl Read) -> Result<(u64, Self), XP3Error> {
29        let identifier: u32 = stream.read_u32::<LittleEndian>()?;
30        let size: u64 = stream.read_u64::<LittleEndian>()?;
31        let mut data = Vec::<u8>::with_capacity(size as usize);
32
33        stream.take(size).read_to_end(&mut data)?;
34
35        Ok((12 + size, Self { identifier, data }))
36    }
37
38    /// Write xp3 index to stream.
39    pub fn write_bytes(&mut self, stream: &mut impl Write) -> Result<u64, XP3Error> {
40        stream.write_u32::<LittleEndian>(self.identifier)?;
41        let len = self.data.len() as u64;
42        stream.write_u64::<LittleEndian>(len)?;
43        stream.write_all(&mut self.data)?;
44
45        Ok(12 + len)
46    }
47
48}
xp3/index/mod.rs

xp3/index/
mod.rs
