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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) 2003 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 "Ant" 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.util;
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import org.apache.tools.ant.Project;
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import org.apache.tools.ant.ProjectComponent;
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import org.apache.tools.ant.taskdefs.condition.Os;
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import org.apache.tools.ant.types.Resource;
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import org.apache.tools.ant.types.ResourceFactory;
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import java.io.File;
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import java.util.Vector;
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/**
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* this class provides utility methods to process resources
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*
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* @author <a href="mailto:levylambert@tiscali-dsl.de">Antoine Levy-Lambert</a>
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* @since Ant 1.5.2
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*/
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public class ResourceUtils {
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/** {
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* tells which source files should be reprocessed based on the
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* last modification date of target files
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* @param logTo where to send (more or less) interesting output
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* @param source array of resources bearing relative path and last
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* modification date
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* @param mapper filename mapper indicating how to find the target
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* files
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* @param targets object able to map as a resource a relative path
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* at <b>destination</b>
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* @return array containing the source files which need to be
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* copied or processed, because the targets are out of date or do
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* not exist
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*/
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public static Resource[] selectOutOfDateSources(ProjectComponent logTo,
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Resource[] source,
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FileNameMapper mapper,
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ResourceFactory targets) {
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long now = (new java.util.Date()).getTime();
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/*
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If we're on Windows, we have to munge the time up to 2 secs to
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be able to check file modification times.
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(Windows has a max resolution of two secs for modification times)
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Actually this is a feature of the FAT file system, NTFS does
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not have it, so if we could reliably passively test for an NTFS
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file systems we could turn this off...
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*/
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if (Os.isFamily("windows")) {
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now += 2000;
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}
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Vector vresult = new Vector();
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for (int counter = 0; counter < source.length; counter++) {
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if (source[counter].getLastModified() > now) {
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logTo.log("Warning: " + source[counter].getName()
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+ " modified in the future.",
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Project.MSG_WARN);
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}
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String[] targetnames =
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mapper.mapFileName(source[counter].getName()
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.replace('/', File.separatorChar));
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if (targetnames != null) {
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boolean added = false;
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StringBuffer targetList = new StringBuffer();
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for (int ctarget = 0; !added && ctarget < targetnames.length;
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ctarget++) {
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Resource atarget =
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targets.getResource(targetnames[ctarget]
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.replace(File.separatorChar, '/'));
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// if the target does not exist, or exists and
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// is older than the source, then we want to
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// add the resource to what needs to be copied
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if (!atarget.isExists()) {
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logTo.log(source[counter].getName() + " added as "
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+ atarget.getName()
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+ " doesn\'t exist.", Project.MSG_VERBOSE);
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vresult.addElement(source[counter]);
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added = true;
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} else if (atarget.getLastModified()
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< source[counter].getLastModified()) {
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logTo.log(source[counter].getName() + " added as "
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+ atarget.getName()
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+ " is outdated.", Project.MSG_VERBOSE);
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vresult.addElement(source[counter]);
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added = true;
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} else {
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if (targetList.length() > 0) {
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targetList.append(", ");
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}
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targetList.append(atarget.getName());
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}
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}
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if (!added) {
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logTo.log(source[counter].getName()
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+ " omitted as " + targetList.toString()
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+ (targetnames.length == 1 ? " is" : " are ")
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+ " up to date.", Project.MSG_VERBOSE);
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}
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} else {
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logTo.log(source[counter].getName()
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+ " skipped - don\'t know how to handle it",
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Project.MSG_VERBOSE);
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}
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}
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Resource[] result= new Resource[vresult.size()];
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vresult.copyInto(result);
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return result;
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}
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}
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