83e787e837
- This is a wrapper function for all files in soong_injection directory. This should prevent an error in the workspace generated for api_bp2build. - Rename the existing CreateSoongInjectionFiles fn and make it package private to prevent confusion (The subsequent CL in this stack should contain a smoke test for api_bp2build) Test: b build //:empty --config=api_bp2build --config=android Test: TH Change-Id: Iddb0aa1aff2f709826edd587aa99fccddf80f08f
94 lines
3.4 KiB
Go
94 lines
3.4 KiB
Go
// Copyright 2020 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 bp2build
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"strings"
|
|
|
|
"android/soong/android"
|
|
"android/soong/bazel"
|
|
)
|
|
|
|
// Codegen is the backend of bp2build. The code generator is responsible for
|
|
// writing .bzl files that are equivalent to Android.bp files that are capable
|
|
// of being built with Bazel.
|
|
func Codegen(ctx *CodegenContext) *CodegenMetrics {
|
|
// This directory stores BUILD files that could be eventually checked-in.
|
|
bp2buildDir := android.PathForOutput(ctx, "bp2build")
|
|
if err := android.RemoveAllOutputDir(bp2buildDir); err != nil {
|
|
fmt.Printf("ERROR: Encountered error while cleaning %s: %s", bp2buildDir, err.Error())
|
|
}
|
|
|
|
res, errs := GenerateBazelTargets(ctx, true)
|
|
if len(errs) > 0 {
|
|
errMsgs := make([]string, len(errs))
|
|
for i, err := range errs {
|
|
errMsgs[i] = fmt.Sprintf("%q", err)
|
|
}
|
|
fmt.Printf("ERROR: Encountered %d error(s): \nERROR: %s", len(errs), strings.Join(errMsgs, "\n"))
|
|
os.Exit(1)
|
|
}
|
|
bp2buildFiles := CreateBazelFiles(ctx.Config(), nil, res.buildFileToTargets, ctx.mode)
|
|
writeFiles(ctx, bp2buildDir, bp2buildFiles)
|
|
|
|
soongInjectionDir := android.PathForOutput(ctx, bazel.SoongInjectionDirName)
|
|
writeFiles(ctx, soongInjectionDir, CreateSoongInjectionDirFiles(ctx, res.metrics))
|
|
|
|
return &res.metrics
|
|
}
|
|
|
|
// Wrapper function that will be responsible for all files in soong_injection directory
|
|
// This includes
|
|
// 1. config value(s) that are hardcoded in Soong
|
|
// 2. product_config variables
|
|
func CreateSoongInjectionDirFiles(ctx *CodegenContext, metrics CodegenMetrics) []BazelFile {
|
|
var ret []BazelFile
|
|
|
|
productConfigFiles, err := CreateProductConfigFiles(ctx)
|
|
if err != nil {
|
|
fmt.Printf("ERROR: %s", err.Error())
|
|
os.Exit(1)
|
|
}
|
|
ret = append(ret, productConfigFiles...)
|
|
ret = append(ret, soongInjectionFiles(ctx.Config(), metrics)...)
|
|
return ret
|
|
}
|
|
|
|
// Get the output directory and create it if it doesn't exist.
|
|
func getOrCreateOutputDir(outputDir android.OutputPath, ctx android.PathContext, dir string) android.OutputPath {
|
|
dirPath := outputDir.Join(ctx, dir)
|
|
if err := android.CreateOutputDirIfNonexistent(dirPath, os.ModePerm); err != nil {
|
|
fmt.Printf("ERROR: path %s: %s", dirPath, err.Error())
|
|
}
|
|
return dirPath
|
|
}
|
|
|
|
// writeFiles materializes a list of BazelFile rooted at outputDir.
|
|
func writeFiles(ctx android.PathContext, outputDir android.OutputPath, files []BazelFile) {
|
|
for _, f := range files {
|
|
p := getOrCreateOutputDir(outputDir, ctx, f.Dir).Join(ctx, f.Basename)
|
|
if err := writeFile(p, f.Contents); err != nil {
|
|
panic(fmt.Errorf("Failed to write %q (dir %q) due to %q", f.Basename, f.Dir, err))
|
|
}
|
|
}
|
|
}
|
|
|
|
func writeFile(pathToFile android.OutputPath, content string) error {
|
|
// These files are made editable to allow users to modify and iterate on them
|
|
// in the source tree.
|
|
return android.WriteFileToOutputDir(pathToFile, []byte(content), 0644)
|
|
}
|