js-cfb/bits/80_deflate.js

24 lines
591 B
JavaScript
Raw Normal View History

2018-09-04 07:14:20 +00:00
var _deflate = (function() {
var _deflateRaw = (function() {
return function deflateRaw(data, out) {
var boff = 0;
while(boff < data.length) {
var L = Math.min(0xFFFF, data.length - boff);
var h = boff + L == data.length;
/* TODO: this is only type 0 stored */
out.write_shift(1, +h);
out.write_shift(2, L);
out.write_shift(2, (~L) & 0xFFFF);
while(L-- > 0) out[out.l++] = data[boff++];
}
return out.l;
};
})();
return function(data) {
var buf = new_buf(50+Math.floor(data.length*1.1));
var off = _deflateRaw(data, buf);
return buf.slice(0, off);
};
})();