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#![forbid(unsafe_code)]
use crate::{
deflate::{fill_window, BlockState, DeflateStream},
flush_block, DeflateFlush,
};
pub fn deflate_huff(stream: &mut DeflateStream, flush: DeflateFlush) -> BlockState {
loop {
/* Make sure that we have a literal to write. */
if stream.state.lookahead == 0 {
fill_window(stream);
if stream.state.lookahead == 0 {
match flush {
DeflateFlush::NoFlush => return BlockState::NeedMore,
_ => break, /* flush the current block */
}
}
}
/* Output a literal byte */
let state = &mut stream.state;
let lc = state.window.filled()[state.strstart];
let bflush = state.tally_lit(lc);
state.lookahead -= 1;
state.strstart += 1;
if bflush {
flush_block!(stream, false);
}
}
stream.state.insert = 0;
if flush == DeflateFlush::Finish {
flush_block!(stream, true);
return BlockState::FinishDone;
}
if !stream.state.sym_buf.is_empty() {
flush_block!(stream, false);
}
BlockState::BlockDone
}