writeSplatHeaderLimitFinish

fn writeSplatHeaderLimitFinish(
    w: *Writer,
    header: []const u8,
    data: []const []const u8,
    splat: usize,
    limit: usize,
) Error!usize

File

Code

fn writeSplatHeaderLimitFinish(
    w: *Writer,
    header: []const u8,
    data: []const []const u8,
    splat: usize,
    limit: usize,
) Error!usize {
    var remaining = limit;
    var vecs: [8][]const u8 = undefined;
    var i: usize = 0;
    v: {
        if (header.len != 0) {
            const copy_len = @min(header.len, remaining);
            vecs[i] = header[0..copy_len];
            i += 1;
            remaining -= copy_len;
            if (remaining == 0) break :v;
        }
        for (data[0 .. data.len - 1]) |buf| {
            if (buf.len == 0) continue;
            const copy_len = @min(buf.len, remaining);
            vecs[i] = buf[0..copy_len];
            i += 1;
            remaining -= copy_len;
            if (remaining == 0) break :v;
            if (vecs.len - i == 0) break :v;
        }
        const pattern = data[data.len - 1];
        if (splat == 1 or remaining < pattern.len) {
            vecs[i] = pattern[0..@min(remaining, pattern.len)];
            i += 1;
            break :v;
        }
        vecs[i] = pattern;
        i += 1;
        return w.vtable.drain(w, (&vecs)[0..i], @min(remaining / pattern.len, splat));
    }
    return w.vtable.drain(w, (&vecs)[0..i], 1);
}