gemachain_program/
serialize_utils.rs

1#![allow(clippy::integer_arithmetic)]
2use crate::pubkey::Pubkey;
3use crate::sanitize::SanitizeError;
4
5pub fn append_u16(buf: &mut Vec<u8>, data: u16) {
6    let start = buf.len();
7    buf.resize(buf.len() + 2, 0);
8    let end = buf.len();
9    buf[start..end].copy_from_slice(&data.to_le_bytes());
10}
11
12pub fn append_u8(buf: &mut Vec<u8>, data: u8) {
13    let start = buf.len();
14    buf.resize(buf.len() + 1, 0);
15    buf[start] = data;
16}
17
18pub fn append_slice(buf: &mut Vec<u8>, data: &[u8]) {
19    let start = buf.len();
20    buf.resize(buf.len() + data.len(), 0);
21    let end = buf.len();
22    buf[start..end].copy_from_slice(data);
23}
24
25pub fn read_u8(current: &mut usize, data: &[u8]) -> Result<u8, SanitizeError> {
26    if data.len() < *current + 1 {
27        return Err(SanitizeError::IndexOutOfBounds);
28    }
29    let e = data[*current];
30    *current += 1;
31    Ok(e)
32}
33
34pub fn read_pubkey(current: &mut usize, data: &[u8]) -> Result<Pubkey, SanitizeError> {
35    let len = std::mem::size_of::<Pubkey>();
36    if data.len() < *current + len {
37        return Err(SanitizeError::IndexOutOfBounds);
38    }
39    let e = Pubkey::new(&data[*current..*current + len]);
40    *current += len;
41    Ok(e)
42}
43
44pub fn read_u16(current: &mut usize, data: &[u8]) -> Result<u16, SanitizeError> {
45    if data.len() < *current + 2 {
46        return Err(SanitizeError::IndexOutOfBounds);
47    }
48    let mut fixed_data = [0u8; 2];
49    fixed_data.copy_from_slice(&data[*current..*current + 2]);
50    let e = u16::from_le_bytes(fixed_data);
51    *current += 2;
52    Ok(e)
53}
54
55pub fn read_slice(
56    current: &mut usize,
57    data: &[u8],
58    data_len: usize,
59) -> Result<Vec<u8>, SanitizeError> {
60    if data.len() < *current + data_len {
61        return Err(SanitizeError::IndexOutOfBounds);
62    }
63    let e = data[*current..*current + data_len].to_vec();
64    *current += data_len;
65    Ok(e)
66}
gemachain_program/serialize_utils.rs

gemachain_program/
serialize_utils.rs
