/*
* Copyright 2010 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.logging.internal;
import org.fusesource.jansi.WindowsAnsiOutputStream;
import org.gradle.api.specs.Spec;
import org.gradle.util.OperatingSystem;
import org.gradle.util.PosixUtil;
import java.io.ByteArrayOutputStream;
import java.io.FileDescriptor;
import java.io.IOException;
public class TerminalDetector implements Spec<FileDescriptor> {
public boolean isSatisfiedBy(FileDescriptor element) {
if (OperatingSystem.current().isWindows()) {
// Use Jansi's detection mechanism
try {
new WindowsAnsiOutputStream(new ByteArrayOutputStream());
} catch (IOException ignore) {
// Not attached to a console
return false;
}
}
// Use jna-posix to determine if we're connected to a terminal
if (!PosixUtil.current().isatty(element)) {
return false;
}
// Dumb terminal doesn't support control codes. Should really be using termcap database.
String term = System.getenv("TERM");
if (term != null && term.equals("dumb")) {
return false;
}
// Assume a terminal
return true;
}
}