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// Copyright 2016 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 cc
import (
"strings"
"github.com/google/blueprint"
"github.com/google/blueprint/pathtools"
"github.com/google/blueprint/proptools"
"android/soong/android"
)
func init() {
pctx.HostBinToolVariable("protocCmd", "aprotoc")
}
var (
proto = pctx.AndroidStaticRule("protoc",
blueprint.RuleParams{
Command: "$protocCmd --cpp_out=$protoOutParams:$outDir -I $protoBase $protoFlags $in",
CommandDeps: []string{"$protocCmd"},
}, "protoFlags", "protoOutParams", "protoBase", "outDir")
)
// genProto creates a rule to convert a .proto file to generated .pb.cc and .pb.h files and returns
// the paths to the generated files.
func genProto(ctx android.ModuleContext, protoFile android.Path,
protoFlags, protoOutParams string, root bool) (ccFile, headerFile android.WritablePath) {
var protoBase string
if root {
protoBase = "."
ccFile = android.GenPathWithExt(ctx, "proto", protoFile, "pb.cc")
headerFile = android.GenPathWithExt(ctx, "proto", protoFile, "pb.h")
} else {
rel := protoFile.Rel()
protoBase = strings.TrimSuffix(protoFile.String(), rel)
ccFile = android.PathForModuleGen(ctx, "proto", pathtools.ReplaceExtension(rel, "pb.cc"))
headerFile = android.PathForModuleGen(ctx, "proto", pathtools.ReplaceExtension(rel, "pb.h"))
}
ctx.Build(pctx, android.BuildParams{
Rule: proto,
Description: "protoc " + protoFile.Rel(),
Outputs: android.WritablePaths{ccFile, headerFile},
Input: protoFile,
Args: map[string]string{
"outDir": android.ProtoDir(ctx).String(),
"protoFlags": protoFlags,
"protoOutParams": protoOutParams,
"protoBase": protoBase,
},
})
return ccFile, headerFile
}
func protoDeps(ctx BaseModuleContext, deps Deps, p *android.ProtoProperties, static bool) Deps {
var lib string
switch String(p.Proto.Type) {
case "full":
if ctx.useSdk() {
lib = "libprotobuf-cpp-full-ndk"
static = true
} else {
lib = "libprotobuf-cpp-full"
}
case "lite", "":
if ctx.useSdk() {
lib = "libprotobuf-cpp-lite-ndk"
static = true
} else {
lib = "libprotobuf-cpp-lite"
}
default:
ctx.PropertyErrorf("proto.type", "unknown proto type %q",
String(p.Proto.Type))
}
if static {
deps.StaticLibs = append(deps.StaticLibs, lib)
deps.ReexportStaticLibHeaders = append(deps.ReexportStaticLibHeaders, lib)
} else {
deps.SharedLibs = append(deps.SharedLibs, lib)
deps.ReexportSharedLibHeaders = append(deps.ReexportSharedLibHeaders, lib)
}
return deps
}
func protoFlags(ctx ModuleContext, flags Flags, p *android.ProtoProperties) Flags {
flags.CFlags = append(flags.CFlags, "-DGOOGLE_PROTOBUF_NO_RTTI")
flags.ProtoRoot = android.ProtoCanonicalPathFromRoot(ctx, p)
if flags.ProtoRoot {
flags.GlobalFlags = append(flags.GlobalFlags, "-I"+android.ProtoSubDir(ctx).String())
}
flags.GlobalFlags = append(flags.GlobalFlags, "-I"+android.ProtoDir(ctx).String())
flags.protoFlags = android.ProtoFlags(ctx, p)
if proptools.String(p.Proto.Type) == "lite" {
flags.protoOutParams = append(flags.protoOutParams, "lite")
}
return flags
}
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