Add Python protobuf support.
Python protobuf std libs will be wrapped in final binary/test par file.
Bug: b/70568913
Test: manually create real examples.
Change-Id: I7376ec9175f3e03d1adbd20858a7f74e826387ad
diff --git a/python/proto.go b/python/proto.go
new file mode 100644
index 0000000..82ee3cb
--- /dev/null
+++ b/python/proto.go
@@ -0,0 +1,67 @@
+// Copyright 2017 Google Inc. All rights reserved.
+//
+// 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
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// 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.
+
+package python
+
+import (
+ "android/soong/android"
+ "strings"
+
+ "github.com/google/blueprint"
+)
+
+func init() {
+ pctx.HostBinToolVariable("protocCmd", "aprotoc")
+}
+
+var (
+ proto = pctx.AndroidStaticRule("protoc",
+ blueprint.RuleParams{
+ Command: `rm -rf $out.tmp && mkdir -p $out.tmp && ` +
+ `$protocCmd --python_out=$out.tmp -I $protoBase $protoFlags $in && ` +
+ `$parCmd -o $out -P $pkgPath -C $out.tmp -D $out.tmp && rm -rf $out.tmp`,
+ CommandDeps: []string{
+ "$protocCmd",
+ "$parCmd",
+ },
+ }, "protoBase", "protoFlags", "pkgPath")
+)
+
+func genProto(ctx android.ModuleContext, p *android.ProtoProperties,
+ protoFile android.Path, protoFlags []string, pkgPath string) android.Path {
+ srcJarFile := android.PathForModuleGen(ctx, protoFile.Base()+".srcszip")
+
+ protoRoot := android.ProtoCanonicalPathFromRoot(ctx, p)
+
+ var protoBase string
+ if protoRoot {
+ protoBase = "."
+ } else {
+ protoBase = strings.TrimSuffix(protoFile.String(), protoFile.Rel())
+ }
+
+ ctx.Build(pctx, android.BuildParams{
+ Rule: proto,
+ Description: "protoc " + protoFile.Rel(),
+ Output: srcJarFile,
+ Input: protoFile,
+ Args: map[string]string{
+ "protoBase": protoBase,
+ "protoFlags": strings.Join(protoFlags, " "),
+ "pkgPath": pkgPath,
+ },
+ })
+
+ return srcJarFile
+}