Copyright 2011 Google, Inc.

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Licensed under the Apache License, Version 2.0 (the "License");

you may not use this file except in compliance with the License.

You may obtain a copy of the License at

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http://www.apache.org/licenses/LICENSE-2.0

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Unless required by applicable law or agreed to in writing, software

distributed under the License is distributed on an "AS IS" BASIS,

WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

See the License for the specific language governing permissions and

limitations under the License.

Google APIs Code Generator https://code.google.com/p/google-apis-client-generator/

August 20, 2013

Introduction

This is a tool for generating client libraries from Google APIs Discovery documents. It builds a rich (but language neutral) model of the API and then invokes a language specific backend to emit the library. The language generators are template driven, so it is easy for a developer knowning language X to write templates for code in X, without having to learn much Python.

The generator currently has templates for Java, C++, CSharp, GWT, PHP and Dart. There may be multiple variations of each language. For each, the variant used by default (typically also named "default") matches the head of the respective base client libraries.

Installation

Python 2.7 is required. Python3 is not supported.

Everything can be installed quickly with easy_install or pip. E.g.:

pip install google-apis-client-generator

The following dependencies will be installed:

• django (for the templating package) - http://www.djangoproject.com/
• google-apputils - http://code.google.com/p/google-apputils-python/
• google-api-python-client - http://code.google.com/p/google-api-python-client
• python-gflags - http://code.google.com/p/python-gflags/
• httplib2 - http://code.google.com/p/httplib2/

Usage

To run the library generator, use the "generate_library" script. This is normally what you'd want to do. E.g.:

generate_library \ --input=src/googleapis/codegen/testdata/moderator.v1.json \ --language=java \ --output_dir=/tmp/generated

To expand arbitrary templates, the "expand_templates" script is also available:

expand_templates \ --discovery=src/googleapis/codegen/testdata/moderator.v1.json \ --language=any --templates=discovery_check \ --output_dir=/tmp/generated

Contact

Tony Aiuto (aiuto@google.com) Jacob Smullyan (smulloni@google.com)