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#![allow(clippy::integer_arithmetic)]
use crate::{pubkey::Pubkey, sanitize::SanitizeError};
pub fn append_u16(buf: &mut Vec<u8>, data: u16) {
let start = buf.len();
buf.resize(buf.len() + 2, 0);
let end = buf.len();
buf[start..end].copy_from_slice(&data.to_le_bytes());
}
pub fn append_u8(buf: &mut Vec<u8>, data: u8) {
let start = buf.len();
buf.resize(buf.len() + 1, 0);
buf[start] = data;
}
pub fn append_slice(buf: &mut Vec<u8>, data: &[u8]) {
let start = buf.len();
buf.resize(buf.len() + data.len(), 0);
let end = buf.len();
buf[start..end].copy_from_slice(data);
}
pub fn read_u8(current: &mut usize, data: &[u8]) -> Result<u8, SanitizeError> {
if data.len() < *current + 1 {
return Err(SanitizeError::IndexOutOfBounds);
}
let e = data[*current];
*current += 1;
Ok(e)
}
pub fn read_pubkey(current: &mut usize, data: &[u8]) -> Result<Pubkey, SanitizeError> {
let len = std::mem::size_of::<Pubkey>();
if data.len() < *current + len {
return Err(SanitizeError::IndexOutOfBounds);
}
let e = Pubkey::try_from(&data[*current..*current + len])
.map_err(|_| SanitizeError::ValueOutOfBounds)?;
*current += len;
Ok(e)
}
pub fn read_u16(current: &mut usize, data: &[u8]) -> Result<u16, SanitizeError> {
if data.len() < *current + 2 {
return Err(SanitizeError::IndexOutOfBounds);
}
let mut fixed_data = [0u8; 2];
fixed_data.copy_from_slice(&data[*current..*current + 2]);
let e = u16::from_le_bytes(fixed_data);
*current += 2;
Ok(e)
}
pub fn read_slice(
current: &mut usize,
data: &[u8],
data_len: usize,
) -> Result<Vec<u8>, SanitizeError> {
if data.len() < *current + data_len {
return Err(SanitizeError::IndexOutOfBounds);
}
let e = data[*current..*current + data_len].to_vec();
*current += data_len;
Ok(e)
}