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// Copyright 2016 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.windows.runfiles;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.Charset;
import java.util.HashMap;
import java.util.Map;
/** Utility class for getting runfiles in tests on Windows. */
public final class WindowsRunfiles {
private static Map<String, String> runfiles;
/**
* Returns the actual path on the system corresponding to a given runfiles path. On Unix-like with
* the symlink tree, this function could just returns the runfiles path and let the symlinks do
* the actual resolution.
*/
public static String getRunfile(String runfilesPath) throws IOException {
ensureRunfilesParsed();
return runfiles.get(runfilesPath);
}
private static synchronized void ensureRunfilesParsed() throws IOException {
if (runfiles != null) {
return;
}
runfiles = new HashMap<>();
InputStream fis = new FileInputStream(System.getenv("RUNFILES_MANIFEST_FILE"));
InputStreamReader isr = new InputStreamReader(fis, Charset.forName("UTF-8"));
try (BufferedReader br = new BufferedReader(isr)) {
String line;
while ((line = br.readLine()) != null) {
line = line.trim();
if (!line.isEmpty()) {
// TODO(bazel-team): This is buggy when the path contains spaces, we should fix the
// manifest format.
String[] splitLine = line.split(" ");
if (splitLine.length != 2) {
throw new IllegalStateException("Runfiles manifest entry contains more than one space");
}
runfiles.put(splitLine[0], splitLine[1]);
}
}
}
}
}
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