Type Function HashedWriter [src]

Prototype

pub fn HashedWriter(WriterType: type, HasherType: type) type

Parameters

WriterType: typeHasherType: type

Source

  pub fn HashedWriter(WriterType: type, HasherType: type) type {
    return struct {
        child_writer: WriterType,
        hasher: HasherType,

        pub const Error = WriterType.Error;
        pub const Writer = std.io.Writer(*@This(), Error, write);

        pub fn write(self: *@This(), buf: []const u8) Error!usize {
            const amt = try self.child_writer.write(buf);
            self.hasher.update(buf[0..amt]);
            return amt;
        }

        pub fn writer(self: *@This()) Writer {
            return .{ .context = self };
        }
    };
}  