| // Copyright 2022 The Bazel Authors. 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 com.google.devtools.build.lib.view.util; |
| |
| import com.google.common.io.Files; |
| import com.google.devtools.build.lib.packages.util.MockToolsConfig; |
| import com.google.devtools.build.lib.testutil.BlazeTestUtils; |
| import com.google.devtools.build.lib.testutil.Scratch; |
| import com.google.devtools.build.lib.vfs.Path; |
| import java.io.File; |
| import java.io.IOException; |
| import java.nio.charset.Charset; |
| import java.nio.file.Paths; |
| |
| /** Utility class to perform Starlark-related setup. */ |
| public class StarlarkUtil { |
| public static void setup(Scratch scratch) throws IOException { |
| scratch.file("tools/build_rules/BUILD"); |
| scratch.file("rules/BUILD"); |
| copyExistingStarlarkFiles(scratch, "tools/build_rules", "rules"); |
| copyExistingStarlarkFiles(scratch, "third_party/bazel/tools/build_rules", "rules"); |
| } |
| |
| private static void copyExistingStarlarkFiles(Scratch scratch, String from, String to) |
| throws IOException { |
| File rulesDir = new File(from); |
| if (rulesDir.exists() && rulesDir.isDirectory()) { |
| for (String fileName : rulesDir.list()) { |
| File file = new File(from + "/" + fileName); |
| if (file.isFile() && fileName.endsWith(".bzl")) { |
| String context = Files.asCharSource(file, Charset.defaultCharset()).read(); |
| Path path = scratch.resolve(to + "/" + fileName); |
| if (path.exists()) { |
| scratch.overwriteFile(path.getPathString(), context); |
| } else { |
| scratch.file(path.getPathString(), context); |
| } |
| } |
| } |
| } |
| } |
| |
| public static void copyExistingStarlarkFile(MockToolsConfig mockToolsConfig, String bzlPath) |
| throws IOException { |
| String basename = bzlPath.substring(0, bzlPath.lastIndexOf('/')); |
| mockToolsConfig.create(basename + "/BUILD"); |
| mockToolsConfig.create( |
| bzlPath, |
| new String( |
| java.nio.file.Files.readString( |
| Paths.get(BlazeTestUtils.runfilesDir(), "io_bazel", bzlPath)))); |
| } |
| |
| private StarlarkUtil() {} |
| } |