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/* |
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* The Apache Software License, Version 1.1 |
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* |
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* Copyright (c) 1999 The Apache Software Foundation. All rights |
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* reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. The end-user documentation included with the redistribution, if |
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* any, must include the following acknowlegement: |
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* "This product includes software developed by the |
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* Apache Software Foundation (http://www.apache.org/)." |
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* Alternately, this acknowlegement may appear in the software itself, |
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* if and wherever such third-party acknowlegements normally appear. |
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* |
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* 4. The names "The Jakarta Project", "Tomcat", and "Apache Software |
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* Foundation" must not be used to endorse or promote products derived |
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* from this software without prior written permission. For written |
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* permission, please contact apache@apache.org. |
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* |
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* 5. Products derived from this software may not be called "Apache" |
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* nor may "Apache" appear in their names without prior written |
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* permission of the Apache Group. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This software consists of voluntary contributions made by many |
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* individuals on behalf of the Apache Software Foundation. For more |
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* information on the Apache Software Foundation, please see |
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* <http://www.apache.org/>. |
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*/ |
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package org.apache.tools.ant.taskdefs; |
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import org.apache.tools.ant.*; |
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import java.io.File; |
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import java.io.FileOutputStream; |
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import java.io.IOException; |
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import java.lang.reflect.InvocationTargetException; |
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import java.lang.reflect.Method; |
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import java.text.DateFormat; |
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import java.text.ParseException; |
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import java.util.Date; |
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import java.util.Locale; |
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/** |
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* Touch a file - corresponds to the Unix touch command. |
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* |
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* <p>If the file to touch doesn't exist, an empty one is |
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* created. Setting the modification time of files is not supported in |
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* JDK 1.1. |
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* |
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* @author Stefan Bodewig <a href="mailto:stefan.bodewig@megabit.net">stefan.bodewig@megabit.net</a> |
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*/ |
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public class Touch extends Task { |
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private File file; // required |
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private long millis = -1; |
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private String dateTime; |
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private static Method setLastModified = null; |
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private static Object lockReflection = new Object(); |
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/** |
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* The name of the file to touch. |
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*/ |
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public void setFile(String name) { |
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file = project.resolveFile(name); |
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} |
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/** |
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* Milliseconds since 01/01/1970 00:00 am. |
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*/ |
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public void setMillis(long millis) { |
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this.millis = millis; |
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} |
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/** |
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* Date in the format DD/MM/YYYY HH:MM AM_PM. |
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*/ |
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public void setDatetime(String dateTime) { |
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this.dateTime = dateTime; |
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} |
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/** |
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* Do the work. |
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* |
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* @exception BuildException Thrown in unrecoverable error. |
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*/ |
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public void execute() throws BuildException { |
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if (file.exists() && project.getJavaVersion() == Project.JAVA_1_1) { |
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project.log("Cannot change the modification time of " |
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+ file + " in JDK 1.1", |
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Project.MSG_WARN); |
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return; |
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} |
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if (dateTime != null) { |
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DateFormat df = DateFormat.getDateTimeInstance(DateFormat.SHORT, |
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DateFormat.SHORT, |
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Locale.US); |
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try { |
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setMillis(df.parse(dateTime).getTime()); |
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} catch (ParseException pe) { |
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throw new BuildException(pe.getMessage(), pe, location); |
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} |
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} |
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if (millis >= 0 && project.getJavaVersion() == Project.JAVA_1_1) { |
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project.log(file + |
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" will be created but its modification time cannot be set in JDK 1.1", |
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Project.MSG_WARN); |
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} |
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touch(); |
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} |
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/** |
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* Does the actual work. Entry point for Untar and Expand as well. |
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*/ |
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void touch() throws BuildException { |
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if (!file.exists()) { |
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project.log("Creating "+file, Project.MSG_INFO); |
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try { |
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FileOutputStream fos = new FileOutputStream(file); |
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fos.write(new byte[0]); |
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fos.close(); |
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} catch (IOException ioe) { |
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throw new BuildException("Could not create "+file, ioe, |
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location); |
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} |
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} |
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if (project.getJavaVersion() == Project.JAVA_1_1) { |
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return; |
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} |
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if (setLastModified == null) { |
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synchronized (lockReflection) { |
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if (setLastModified == null) { |
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try { |
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setLastModified = |
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java.io.File.class.getMethod("setLastModified", |
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new Class[] {Long.TYPE}); |
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} catch (NoSuchMethodException nse) { |
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throw new BuildException("File.setlastModified not in JDK > 1.1?", |
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nse, location); |
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} |
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} |
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} |
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} |
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Long[] times = new Long[1]; |
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if (millis < 0) { |
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times[0] = new Long(System.currentTimeMillis()); |
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} else { |
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times[0] = new Long(millis); |
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} |
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try { |
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project.log("Setting modification time for "+file, |
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Project.MSG_VERBOSE); |
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setLastModified.invoke(file, times); |
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} catch (InvocationTargetException ite) { |
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Throwable nested = ite.getTargetException(); |
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throw new BuildException("Exception setting the modification time of " |
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+ file, nested, location); |
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} catch (Throwable other) { |
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throw new BuildException("Exception setting the modification time of " |
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+ file, other, location); |
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} |
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} |
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} |
Stefan Bodewig