| // Copyright 2018 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.runfiles; |
| |
| import java.io.BufferedReader; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| import java.nio.charset.StandardCharsets; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** {@link Runfiles} implementation that parses a runfiles-manifest file to look up runfiles. */ |
| class ManifestBased extends Runfiles { |
| private final Map<String, String> runfiles; |
| |
| ManifestBased(String manifestPath) throws IOException { |
| Util.checkArgument(manifestPath != null); |
| Util.checkArgument(!manifestPath.isEmpty()); |
| this.runfiles = loadRunfiles(manifestPath); |
| } |
| |
| private static Map<String, String> loadRunfiles(String path) throws IOException { |
| HashMap<String, String> result = new HashMap<>(); |
| try (BufferedReader r = |
| new BufferedReader( |
| new InputStreamReader(new FileInputStream(path), StandardCharsets.UTF_8))) { |
| String line = null; |
| while ((line = r.readLine()) != null) { |
| int index = line.indexOf(' '); |
| String runfile = (index == -1) ? line : line.substring(0, index); |
| String realPath = (index == -1) ? line : line.substring(index + 1); |
| result.put(runfile, realPath); |
| } |
| } |
| return Collections.unmodifiableMap(result); |
| } |
| |
| @Override |
| public String rlocationChecked(String path) { |
| return runfiles.get(path); |
| } |
| } |