diff options
Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/KeepAliveInputStream.java')
-rw-r--r-- | framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/KeepAliveInputStream.java | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/KeepAliveInputStream.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/KeepAliveInputStream.java new file mode 100644 index 00000000..debde59a --- /dev/null +++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/KeepAliveInputStream.java @@ -0,0 +1,66 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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.apache.tools.ant.util; + +import java.io.FilterInputStream; +import java.io.IOException; +import java.io.InputStream; + +/** + * Class that can be used to wrap <tt>System.in</tt> + * without getting anxious about any client closing the stream. + * + * <p> + * In code-language it means that it is not necessary to do: + * <pre> + * if (out != System.in) { + * in.close(); + * } + * </pre> + * + * @since Ant 1.6 + */ +public class KeepAliveInputStream extends FilterInputStream { + + /** + * Constructor of KeepAliveInputStream. + * + * @param in an InputStream value, it should be standard input. + */ + public KeepAliveInputStream(InputStream in) { + super(in); + } + + /** + * This method does nothing. + * @throws IOException as we are overriding FilterInputStream. + */ + public void close() throws IOException { + // do not close the stream + } + + /** + * Convenience factory method that returns a non-closing + * InputStream around System.in. + * + * @since Ant 1.8.0 + */ + public static InputStream wrapSystemIn() { + return new KeepAliveInputStream(System.in); + } +} |