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/*
* Modified from http://svn.apache.org/viewvc/ant/core/trunk/src/main/org/apache/tools/ant/taskdefs/UpToDate.java?view=markup
*
* 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 lombok.website;
import java.io.File;
import java.util.Vector;
import java.util.Enumeration;
import java.util.Iterator;
import java.net.MalformedURLException;
import java.net.URL;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.Task;
import org.apache.tools.ant.taskdefs.condition.Condition;
import org.apache.tools.ant.types.Resource;
import org.apache.tools.ant.types.FileSet;
import org.apache.tools.ant.types.resources.Union;
import org.apache.tools.ant.types.resources.FileResource;
import org.apache.tools.ant.types.resources.URLResource;
import org.apache.tools.ant.types.selectors.SelectorUtils;
public class WebUpToDate extends Task implements Condition {
private String property;
private String value;
private String urlbase;
private File sourceFile;
private Vector sourceFileSets = new Vector();
private Union sourceResources = new Union();
/**
* The property to set if the target file is more up-to-date than
* (each of) the source file(s).
*
* @param property the name of the property to set if Target is up-to-date.
*/
public void setProperty(String property) {
this.property = property;
}
/**
* The value to set the named property to if the target file is more
* up-to-date than (each of) the source file(s). Defaults to 'true'.
*
* @param value the value to set the property to if Target is up-to-date
*/
public void setValue(String value) {
this.value = value;
}
/**
* Returns the value, or "true" if a specific value wasn't provided.
*/
private String getValue() {
return (value != null) ? value : "true";
}
/**
* The file that must be older than the target file
* if the property is to be set.
*
* @param file the file we are checking against the target file.
*/
public void setSrcfile(File file) {
this.sourceFile = file;
}
/**
* Nested <srcfiles> element.
* @param fs the source files
*/
public void addSrcfiles(FileSet fs) {
sourceFileSets.addElement(fs);
}
/**
* Nested resource collections as sources.
* @return the source resources to configure.
* @since Ant 1.7
*/
public Union createSrcResources() {
return sourceResources;
}
public void setUrlbase(String base) {
if (base.charAt(base.length()-1) != '/') this.urlbase = base + "/";
else this.urlbase = base;
}
/**
* Evaluate (all) target and source file(s) to
* see if the target(s) is/are up-to-date.
* @return true if the target(s) is/are up-to-date
*/
public boolean eval() {
if (sourceFileSets.size() == 0 && sourceResources.size() == 0 && sourceFile == null) {
throw new BuildException("At least one srcfile or a nested <srcfiles> or <srcresources> element must be set.");
}
if ((sourceFileSets.size() > 0 || sourceResources.size() > 0) && sourceFile != null) {
throw new BuildException("Cannot specify both the srcfile attribute and a nested <srcfiles> or <srcresources> element.");
}
if (urlbase == null) {
throw new BuildException("The urlbase attribute must be set.");
}
// if the source file isn't there, throw an exception
if (sourceFile != null && !sourceFile.exists()) {
throw new BuildException(sourceFile.getAbsolutePath() + " not found.");
}
boolean upToDate = true;
if (sourceFile != null) {
Resource fileResource = new FileResource(sourceFile);
upToDate = isUpToDate(fileResource);
}
if (upToDate) {
Enumeration e = sourceFileSets.elements();
while (upToDate && e.hasMoreElements()) {
FileSet fs = (FileSet)e.nextElement();
Iterator it = fs.iterator();
while (upToDate && it.hasNext()) {
Resource r = (Resource)it.next();
upToDate = isUpToDate(r);
}
}
}
if (upToDate) {
Resource[] r = sourceResources.listResources();
for (int i = 0; upToDate && i < r.length; i++) {
upToDate = isUpToDate(r[i]);
}
}
return upToDate;
}
private boolean isUpToDate(Resource r) throws BuildException {
String url = urlbase + r.getName();
Resource urlResource;
try {
urlResource = new URLResource(new URL(url));
} catch (MalformedURLException e) {
throw new BuildException("url is malformed: " + url, e);
}
if (SelectorUtils.isOutOfDate(r, urlResource, 20)) {
log(r.getName() + " is newer than " + url, Project.MSG_VERBOSE);
return false;
} else {
return true;
}
}
/**
* Sets property to true if target file(s) have a more recent timestamp
* than (each of) the corresponding source file(s).
* @throws BuildException on error
*/
public void execute() throws BuildException {
if (property == null) {
throw new BuildException("property attribute is required.", getLocation());
}
boolean upToDate = eval();
if (upToDate) {
getProject().setNewProperty(property, getValue());
log("Website is up to date.");
}
}
}
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