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// 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 java
import (
"path/filepath"
"strconv"
"android/soong/android"
)
const (
protoTypeDefault = "lite"
)
func genProto(ctx android.ModuleContext, protoFiles android.Paths, flags android.ProtoFlags) android.Paths {
// Shard proto files into groups of 100 to avoid having to recompile all of them if one changes and to avoid
// hitting command line length limits.
shards := android.ShardPaths(protoFiles, 50)
srcJarFiles := make(android.Paths, 0, len(shards))
for i, shard := range shards {
srcJarFile := android.PathForModuleGen(ctx, "proto", "proto"+strconv.Itoa(i)+".srcjar")
srcJarFiles = append(srcJarFiles, srcJarFile)
outDir := srcJarFile.ReplaceExtension(ctx, "tmp")
rule := android.NewRuleBuilder(pctx, ctx)
rule.Command().Text("rm -rf").Flag(outDir.String())
rule.Command().Text("mkdir -p").Flag(outDir.String())
for _, protoFile := range shard {
depFile := srcJarFile.InSameDir(ctx, protoFile.String()+".d")
rule.Command().Text("mkdir -p").Flag(filepath.Dir(depFile.String()))
android.ProtoRule(rule, protoFile, flags, flags.Deps, outDir, depFile, nil)
}
// Proto generated java files have an unknown package name in the path, so package the entire output directory
// into a srcjar.
rule.Command().
BuiltTool("soong_zip").
Flag("-srcjar").
Flag("-write_if_changed").
FlagWithOutput("-o ", srcJarFile).
FlagWithArg("-C ", outDir.String()).
FlagWithArg("-D ", outDir.String())
rule.Command().Text("rm -rf").Flag(outDir.String())
rule.Restat()
ruleName := "protoc"
ruleDesc := "protoc"
if len(shards) > 1 {
ruleName += "_" + strconv.Itoa(i)
ruleDesc += " " + strconv.Itoa(i)
}
rule.Build(ruleName, ruleDesc)
}
return srcJarFiles
}
func protoDeps(ctx android.BottomUpMutatorContext, p *android.ProtoProperties) {
const unspecifiedProtobufPluginType = ""
if String(p.Proto.Plugin) == "" {
switch String(p.Proto.Type) {
case "stream": // does not require additional dependencies
case "micro":
ctx.AddVariationDependencies(nil, staticLibTag, "libprotobuf-java-micro")
case "nano":
ctx.AddVariationDependencies(nil, staticLibTag, "libprotobuf-java-nano")
case "lite", unspecifiedProtobufPluginType:
ctx.AddVariationDependencies(nil, staticLibTag, "libprotobuf-java-lite")
case "full":
if ctx.Host() {
ctx.AddVariationDependencies(nil, staticLibTag, "libprotobuf-java-full")
} else {
ctx.PropertyErrorf("proto.type", "full java protos only supported on the host")
}
default:
ctx.PropertyErrorf("proto.type", "unknown proto type %q",
String(p.Proto.Type))
}
}
}
func protoFlags(ctx android.ModuleContext, j *CommonProperties, p *android.ProtoProperties,
flags javaBuilderFlags) javaBuilderFlags {
flags.proto = android.GetProtoFlags(ctx, p)
if String(p.Proto.Plugin) == "" {
var typeToPlugin string
switch String(p.Proto.Type) {
case "stream":
flags.proto.OutTypeFlag = "--javastream_out"
typeToPlugin = "javastream"
case "micro":
flags.proto.OutTypeFlag = "--javamicro_out"
typeToPlugin = "javamicro"
case "nano":
flags.proto.OutTypeFlag = "--javanano_out"
typeToPlugin = "javanano"
case "lite", "":
flags.proto.OutTypeFlag = "--java_out"
flags.proto.OutParams = append(flags.proto.OutParams, "lite")
case "full":
flags.proto.OutTypeFlag = "--java_out"
default:
ctx.PropertyErrorf("proto.type", "unknown proto type %q",
String(p.Proto.Type))
}
if typeToPlugin != "" {
hostTool := ctx.Config().HostToolPath(ctx, "protoc-gen-"+typeToPlugin)
flags.proto.Deps = append(flags.proto.Deps, hostTool)
flags.proto.Flags = append(flags.proto.Flags, "--plugin=protoc-gen-"+typeToPlugin+"="+hostTool.String())
}
}
flags.proto.OutParams = append(flags.proto.OutParams, j.Proto.Output_params...)
return flags
}
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