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const BUFFER_SIZE: usize = 8192;
pub struct ConstStr {
data: [u8; BUFFER_SIZE],
len: usize,
}
impl ConstStr {
pub const fn empty() -> ConstStr {
ConstStr {
data: [0u8; BUFFER_SIZE],
len: 0,
}
}
pub const fn append_str(mut self, s: &str) -> Self {
let b = s.as_bytes();
let mut index = 0;
while index < b.len() {
self.data[self.len] = b[index];
self.len += 1;
index += 1;
}
self
}
pub const fn as_str(&self) -> &str {
let mut data: &[u8] = &self.data;
let mut n = data.len() - self.len;
while n > 0 {
n -= 1;
match data.split_last() {
Some((_, rest)) => data = rest,
None => panic!(),
}
}
unsafe { std::str::from_utf8_unchecked(data) }
}
}