/*
* Copyright 2014 the original author or authors.
*
* 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 org.gradle.integtests.fixtures.jvm;
import org.gradle.api.GradleException;
import org.gradle.process.internal.ExecHandleBuilder;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.InputStreamReader;
import java.util.Collection;
/**
* Uses `java_home -V` to find JVM installations
*/
class OsXInstalledJvmLocator {
public Collection<JvmInstallation> findJvms() {
try {
ExecHandleBuilder execHandleBuilder = new ExecHandleBuilder();
execHandleBuilder.workingDir(new File(".").getAbsoluteFile());
execHandleBuilder.commandLine("/usr/libexec/java_home", "-V");
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
// verbose output is written to stderr for some reason
execHandleBuilder.setErrorOutput(outputStream);
execHandleBuilder.setStandardOutput(new ByteArrayOutputStream());
execHandleBuilder.build().start().waitForFinish().assertNormalExitValue();
return new OsXJavaHomeParser().parse(new InputStreamReader(new ByteArrayInputStream(outputStream.toByteArray())));
} catch (Exception e) {
throw new GradleException("Could not locate installed JVMs.", e);
}
}
}