move and remove unused from stream reader/writer

lib/elf/stream_writer.rb

@@ -0,0 +1,74 @@
+module StreamWriter
+  def write_binary(values, type)
+    d = values.pack(type * values.length)
+    __sr_write(d)
+  end
+  def write_uint32(*args)
+    return write_binary(args,'L')
+  end
+  def write_uint16(*args)
+    return write_binary(args,'S')
+  end
+  def write_uint8(*args)
+    return write_binary(args,'C')
+  end
+  def write_uint64(*args)
+    return write_binary(args,'Q')
+  end
+  def write_sint64(*args)
+    return write_binary(args,'q')
+  end
+  def write_cstr_fixed(str, len)
+    return __sr_write(str.ljust(len, 0.chr))
+  end
+  def write_cstr_terminated(str)
+    return __sr_write(str + 0.chr)
+  end
+  def write_cstr_prefixed(str)
+    write_uint8(str.word_length)
+    return __sr_write(str)
+  end
+  def write_str(str)
+    return __sr_write(str)
+  end
+  def write_float(*args)
+    return write_binary(args,'F')
+  end
+  def write_double(*args)
+    return write_binary(args,'D')
+  end
+  def write_sint16(*args)
+    return write_binary(args,'s')
+  end
+  def write_sint32(*args)
+    return write_binary(args,'l')
+  end
+  def write_data(str)
+    return __sr_write(str)
+  end
+end
+
+class IO
+#  include StreamReader
+  include StreamWriter
+
+  def __sr_read(len)
+    read(len)
+  end
+  def __sr_write(str)
+    write(str)
+  end
+end
+
+require 'stringio'
+class StringIO
+#  include StreamReader
+  include StreamWriter
+
+  def __sr_read(len)
+    read(len)
+  end
+  def __sr_write(str)
+    write(str)
+  end
+end