164e0867fc
Sample output: [bp2build] cc_library_headers: 5 targets [bp2build] cc_object: 5 targets [bp2build] filegroup: 4 targets [bp2build] genrule: 4 targets [bp2build] sh_binary: 1 targets [bp2build] Generated 19 total BUILD targets from 39270 Android.bp modules. This CL adds an additional CodegenMetrics return value to GenerateBazelTargets calls, which are called from bp2build, queryview, and their tests. For this UI, we only want to use it for bp2build, and not queryview or tests, since it's not useful for the former, and can pollute the CLI for the latter. Test: build/bazel/scripts/milestone-2/demo.sh Change-Id: Ic84307a1ed1a25e360c9b23459e5449d932bc2e7
62 lines
2.1 KiB
Go
62 lines
2.1 KiB
Go
// Copyright 2020 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package bp2build
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import (
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"android/soong/android"
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"fmt"
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"os"
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)
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// The Bazel bp2build code generator is responsible for writing .bzl files that are equivalent to
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// Android.bp files that are capable of being built with Bazel.
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func Codegen(ctx CodegenContext) CodegenMetrics {
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outputDir := android.PathForOutput(ctx, "bp2build")
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android.RemoveAllOutputDir(outputDir)
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ruleShims := CreateRuleShims(android.ModuleTypeFactories())
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buildToTargets, metrics := GenerateBazelTargets(ctx)
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filesToWrite := CreateBazelFiles(ruleShims, buildToTargets, ctx.mode)
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for _, f := range filesToWrite {
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if err := writeFile(outputDir, ctx, f); err != nil {
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fmt.Errorf("Failed to write %q (dir %q) due to %q", f.Basename, f.Dir, err)
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}
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}
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return metrics
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}
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func writeFile(outputDir android.OutputPath, ctx android.PathContext, f BazelFile) error {
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return writeReadOnlyFile(ctx, getOutputPath(outputDir, ctx, f.Dir), f.Basename, f.Contents)
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}
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func getOutputPath(outputDir android.OutputPath, ctx android.PathContext, dir string) android.OutputPath {
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return outputDir.Join(ctx, dir)
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}
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// The auto-conversion directory should be read-only, sufficient for bazel query. The files
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// are not intended to be edited by end users.
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func writeReadOnlyFile(ctx android.PathContext, dir android.OutputPath, baseName, content string) error {
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android.CreateOutputDirIfNonexistent(dir, os.ModePerm)
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pathToFile := dir.Join(ctx, baseName)
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// 0444 is read-only
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err := android.WriteFileToOutputDir(pathToFile, []byte(content), 0444)
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return err
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}
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