Final CL to kill off client/samples .

client/samples/swarm/appengine/encoder.py

-# Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
-# for details. All rights reserved. Use of this source code is governed by a
-# BSD-style license that can be found in the LICENSE file.
-
-'''
-This Encoder shares a lot in common with protobufs.  It uses variable length
-ints and size-encoded strings and binary values.  Other than being hugely
-stripped down, the major conceptual difference is that this encoding
-is UTF8 "safe".  This means that it generates a form that should be passed
-on the wire as UTF8 and then can be very efficiently decoded by JS in the
-browser which natively handles these kinds of strings.  To stay efficient in
-this range, all numeric data is encoded in only 7 bits.
-'''
-
-import base64
-
-class Encoder:
-  def __init__(self):
-    self.data = []
-
-  def writeInt(self, value):
-    '''Uses a 7-bit per byte encoding to stay UTF-8 "safe".'''
-    bits = value & 0x3f
-    value >>= 6
-    while value:
-      self.data.append(chr(0x40|bits))
-      bits = value & 0x3f
-      value >>= 6
-    self.data.append(chr(bits))
-
-  def writeBool(self, b):
-    self.data.append(('F', 'T')[b])
-
-  def writeString(self, s):
-    if not s: s = ''
-    self.writeInt(len(s))
-    self.data.append(s)
-
-  def writeBinary(self, s):
-    '''Encode binary data using base64.  This is less efficient than a 7-bit
-    encoding would be; however, it can be decoded much faster on most
-    browsers due to native support for the format.'''
-    v = base64.b64encode(s)
-    self.writeInt(len(v))
-    self.data.append(v)
-
-  def writeList(self, l):
-    self.writeInt(len(l))
-    for i in l:
-      i.encode(self)
-
-  def writeRaw(self, s):
-    self.data.append(s)
-
-  def finish(self):
-    d = ''.join(self.data)
-    return _encVarInt(len(d)) + d
-
-  def getRaw(self):
-    return ''.join(self.data)