protobuf

History

kenton@google.com 26bd9eee6e Integrate changes from internal code. protoc * Enum values may now have custom options, using syntax similar to field options. * Fixed bug where .proto files which use custom options but don't actually define them (i.e. they import another .proto file defining the options) had to explicitly import descriptor.proto. * Adjacent string literals in .proto files will now be concatenated, like in C. C++ * Generated message classes now have a Swap() method which efficiently swaps the contents of two objects. * All message classes now have a SpaceUsed() method which returns an estimate of the number of bytes of allocated memory currently owned by the object. This is particularly useful when you are reusing a single message object to improve performance but want to make sure it doesn't bloat up too large. * New method Message::SerializeAsString() returns a string containing the serialized data. May be more convenient than calling SerializeToString(string). In debug mode, log error messages when string-type fields are found to contain bytes that are not valid UTF-8. * Fixed bug where a message with multiple extension ranges couldn't parse extensions. * Fixed bug where MergeFrom(const Message&) didn't do anything if invoked on a message that contained no fields (but possibly contained extensions). * Fixed ShortDebugString() to not be O(n^2). Durr. * Fixed crash in TextFormat parsing if the first token in the input caused a tokenization error. Java * New overload of mergeFrom() which parses a slice of a byte array instead of the whole thing. * New method ByteString.asReadOnlyByteBuffer() does what it sounds like. * Improved performance of isInitialized() when optimizing for code size. Python * Corrected ListFields() signature in Message base class to match what subclasses actually implement. * Some minor refactoring.		2008-11-21 00:06:27 +00:00
..
google	Integrate changes from internal code.	2008-11-21 00:06:27 +00:00
ez_setup.py	Initial checkin.	2008-07-10 02:12:20 +00:00
mox.py	Initial checkin.	2008-07-10 02:12:20 +00:00
README.txt	2.0.1 release.	2008-08-27 19:25:48 +00:00
setup.py	Integrate changes from internal code.	2008-11-21 00:06:27 +00:00
stubout.py	Initial checkin.	2008-07-10 02:12:20 +00:00

README.txt

Protocol Buffers - Google's data interchange format
Copyright 2008 Google Inc.

This directory contains the Python Protocol Buffers runtime library.

Normally, this directory comes as part of the protobuf package, available
from:

  http://code.google.com/p/protobuf

The complete package includes the C++ source code, which includes the
Protocol Compiler (protoc).  If you downloaded this package from PyPI
or some other Python-specific source, you may have received only the
Python part of the code.  In this case, you will need to obtain the
Protocol Compiler from some other source before you can use this
package.

Development Warning
===================

The Python implementation of Protocol Buffers is not as mature as the C++
and Java implementations.  It may be more buggy, and it is known to be
pretty slow at this time.  If you would like to help fix these issues,
join the Protocol Buffers discussion list and let us know!

Installation
============

1) Make sure you have Python 2.4 or newer.  If in doubt, run:

     $ python -V

2) If you do not have setuptools installed, note that it will be
   downloaded and installed automatically as soon as you run setup.py.
   If you would rather install it manually, you may do so by following
   the instructions on this page:

     http://peak.telecommunity.com/DevCenter/EasyInstall#installation-instructions

3) Build the C++ code, or install a binary distribution of protoc.  If
   you install a binary distribution, make sure that it is the same
   version as this package.  If in doubt, run:

     $ protoc --version

4) Run the tests:

     $ python setup.py test

   If some tests fail, this library may not work correctly on your
   system.  Continue at your own risk.

   Please note that there is a known problem with some versions of
   Python on Cygwin which causes the tests to fail after printing the
   error:  "sem_init: Resource temporarily unavailable".  This appears
   to be a bug either in Cygwin or in Python:
     http://www.cygwin.com/ml/cygwin/2005-07/msg01378.html
   We do not know if or when it might me fixed.  We also do not know
   how likely it is that this bug will affect users in practice.

5) Install:

     $ python setup.py install

   This step may require superuser privileges.

Usage
=====

The complete documentation for Protocol Buffers is available via the
web at:

  http://code.google.com/apis/protocolbuffers/