erc20-substreams 0.1.1

Erc20 Token Substreams
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

pub fn address_pretty(input: &[u8]) -> String {
    format!("0x{}", hex::encode(input))
}

pub fn decode_uint32(input: &[u8]) -> u32 {
    let as_array: [u8; 4] = input[28..32].try_into().unwrap();
    u32::from_be_bytes(as_array)
}

pub fn decode_string(input: &[u8]) -> String {
    if input.len() < 96 {
        panic!("input length too small: {}", input.len());
    }

    let next = decode_uint32(&input[0..32]);
    if next != 32 {
        panic!("invalid input, first part should be 32");
    };

    let size : usize = decode_uint32(&input[32..64]) as usize;
    let end: usize = (size) + 64;

    if end > input.len() {
        panic!("invalid input: end {:?}, length: {:?}, next: {:?}, size: {:?}, whole: {:?}", end, input.len(), next, size, hex::encode(&input[32..64]));
    }

    String::from_utf8_lossy(&input[64..end]).to_string()
}