#[derive(Debug, Clone, PartialEq, Eq)]
pub struct Change {
offset: usize,
old: Vec<u8>,
new: Vec<u8>,
}
impl Change {
pub fn new(offset: usize, old: &[u8], new: &[u8]) -> Self {
if old.len() != new.len() {
panic!("{}", t!("panic.data_length_mismatch"));
}
Self {
offset,
old: old.to_vec(),
new: new.to_vec(),
}
}
pub fn offset(&self) -> usize {
self.offset
}
pub fn len(&self) -> usize {
self.old.len()
}
pub fn is_empty(&self) -> bool {
self.old.is_empty()
}
pub fn apply(&self, data: &mut Vec<u8>) {
data.splice(
self.offset..self.offset + self.old.len(),
self.new.iter().cloned(),
);
}
pub fn revert(&self, data: &mut Vec<u8>) {
data.splice(
self.offset..self.offset + self.new.len(),
self.old.iter().cloned(),
);
}
}