/*
* Copyright 2017-present Facebook, Inc.
*
* 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.facebook.buck.jvm.java.abi;
import com.facebook.buck.io.MorePaths;
import com.facebook.buck.util.function.ThrowingSupplier;
import com.google.common.base.Preconditions;
import com.google.common.io.ByteStreams;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.file.Path;
import javax.tools.JavaFileManager;
import javax.tools.JavaFileObject;
import javax.tools.StandardLocation;
public class JavaFileManagerStubJarWriter implements StubJarWriter {
private final JavaFileManager fileManager;
public JavaFileManagerStubJarWriter(JavaFileManager fileManager) throws IOException {
this.fileManager = fileManager;
}
@Override
public void writeEntry(
Path relativePath, ThrowingSupplier<InputStream, IOException> streamSupplier)
throws IOException {
String relativePathString = MorePaths.pathWithUnixSeparators(relativePath);
Preconditions.checkArgument(relativePathString.endsWith(".class"));
String className =
relativePathString
.replace('/', '.')
.substring(0, relativePathString.length() - 6); // Strip .class off the end
try (InputStream inputStream = streamSupplier.throwingGet();
OutputStream outputStream =
fileManager
.getJavaFileForOutput(
StandardLocation.CLASS_OUTPUT, className, JavaFileObject.Kind.CLASS, null)
.openOutputStream()) {
ByteStreams.copy(inputStream, outputStream);
}
}
@Override
public void close() throws IOException {}
}