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# Copyright (c) 2012 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# This file is meant to be included into a target to provide a rule
# to invoke protoc in a consistent manner. This is only to be included
# for Java targets. When including this file, a .jar-file will be generated.
# For other targets, see protoc.gypi.
#
# To use this, create a gyp target with the following form:
# {
# 'target_name': 'my_proto_lib',
# 'sources': [
# 'foo.proto',
# 'bar.proto',
# ],
# 'variables': {
# 'proto_in_dir': '.'
# },
# 'includes': ['path/to/this/gypi/file'],
# }
#
# The 'proto_in_dir' variable must be the relative path to the
# directory containing the .proto files. If left out, it defaults to '.'.
#
# The 'output_java_files' variable specifies a list of output files that will
# be generated. It is based on the package and java_outer_classname fields in
# the proto. All the values must be prefixed with >(java_out_dir), since that
# is the root directory of all the output.
#
# Implementation notes:
# A target_name of foo and proto-specified 'package' java.package.path produces:
# <(PRODUCT_DIR)/java_proto/foo/{java/package/path/}{Foo,Bar}.java
# where Foo and Bar are taken from 'java_outer_classname' of the protos.
#
# How the .jar-file is created is different than how protoc is used for other
# targets, and as such, this lives in its own file.
{
'variables': {
'protoc': '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)protoc<(EXECUTABLE_SUFFIX)',
'java_out_dir': '<(PRODUCT_DIR)/java_proto/<(_target_name)/src',
'proto_in_dir%': '.',
'stamp_file': '<(java_out_dir).stamp',
'script': '<(DEPTH)/build/protoc_java.py',
# The rest of the variables here are for the java.gypi include.
'java_in_dir': '<(DEPTH)/build/android/empty',
'generated_src_dirs': ['<(java_out_dir)'],
# Adding the |stamp_file| to |additional_input_paths| makes the actions in
# the include of java.gypi depend on the genproto_java action.
'additional_input_paths': ['<(stamp_file)'],
},
'actions': [
{
'action_name': 'genproto_java',
'inputs': [
'<(script)',
'<(protoc)',
'<@(_sources)',
],
# We do not know the names of the generated files, so we use a stamp.
'outputs': [
'<(stamp_file)',
],
'action': [
'<(script)',
'<(protoc)',
'<(proto_in_dir)',
'<(java_out_dir)',
'<(stamp_file)',
'<@(_sources)',
],
'message': 'Generating Java code from <(proto_in_dir)',
},
],
'dependencies': [
'<(DEPTH)/third_party/protobuf/protobuf.gyp:protoc#host',
'<(DEPTH)/third_party/protobuf/protobuf.gyp:protobuf_lite_javalib',
],
'includes': [ 'java.gypi' ],
}