espers 0.1.0

Library for reading ESP and ESM files
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64

use super::{get_cursor, Flags};
use crate::error::Error;
use crate::fields::{DATA, EDID};
use binrw::{binrw, BinRead, NullString};
use serde_derive::{Deserialize, Serialize};
use std::fmt;
use std::io::Cursor;

#[binrw]
#[derive(Debug, Clone, Serialize, Deserialize)]
#[brw(little, magic = b"GMST")]
pub struct GMST {
    pub size: u32,
    pub flags: Flags,
    pub form_id: u32,
    pub timestamp: u16,
    pub version_control: u16,
    pub internal_version: u16,
    pub unknown: u16,
    #[br(count = size)]
    pub data: Vec<u8>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum Value {
    Bool(u32),
    Int(u32),
    Float(f32),
    Str(String),
    Unknown([u8; 4]),
}
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct GameSetting {
    pub edid: String,
    pub value: Value,
}

impl fmt::Display for GameSetting {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "GameSetting ({})", self.edid)
    }
}

impl TryFrom<GMST> for GameSetting {
    type Error = Error;

    fn try_from(raw: GMST) -> Result<Self, Self::Error> {
        let data = get_cursor(&raw.data, raw.flags.contains(Flags::COMPRESSED));
        let mut cursor = Cursor::new(&data);

        let edid: String = EDID::read(&mut cursor)?.try_into()?;
        let data = DATA::read(&mut cursor)?;
        let mut data_cursor = Cursor::new(&data.data);
        let value = match &edid.chars().next() {
            Some('b') => Value::Bool(u32::read_le(&mut data_cursor)?),
            Some('i') => Value::Int(u32::read_le(&mut data_cursor)?),
            Some('f') => Value::Float(f32::read_le(&mut data_cursor)?),
            Some('s') => Value::Str(NullString::read_le(&mut data_cursor)?.to_string()),
            _ => Value::Unknown(BinRead::read_le(&mut data_cursor)?),
        };

        Ok(Self { edid, value })
    }
}