Function appendLz [src]

Fetch an LZ sequence (length, distance) from inside the buffer

Prototype

pub fn appendLz( self: *Self, allocator: Allocator, len: usize, dist: usize, writer: anytype, ) !void

Parameters

self: *Selfallocator: Allocatorlen: usizedist: usize

Source

  pub fn appendLz(
    self: *Self,
    allocator: Allocator,
    len: usize,
    dist: usize,
    writer: anytype,
) !void {
    _ = writer;

    const buf_len = self.buf.items.len;
    if (dist > buf_len) {
        return error.CorruptInput;
    }

    var offset = buf_len - dist;
    var i: usize = 0;
    while (i < len) : (i += 1) {
        const x = self.buf.items[offset];
        try self.buf.append(allocator, x);
        offset += 1;
    }
    self.len += len;
}  