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/*
* 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.taskdefs.condition;
import java.io.File;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.util.JavaEnvUtils;
import org.apache.tools.ant.util.ReflectWrapper;
import org.apache.tools.ant.util.StringUtils;
/**
* <hasfreespace>
* <p>Condition returns true if selected partition
* has the requested space, false otherwise.</p>
* @since Ant 1.7
*/
public class HasFreeSpace implements Condition {
private String partition;
private String needed;
/**
* Evaluate the condition.
* @return true if there enough free space.
* @throws BuildException if there is a problem.
*/
public boolean eval() throws BuildException {
validate();
try {
if (JavaEnvUtils.isAtLeastJavaVersion("1.6")) {
//reflection to avoid bootstrap/build problems
File fs = new File(partition);
ReflectWrapper w = new ReflectWrapper(fs);
long free = ((Long) w.invoke("getFreeSpace")).longValue();
return free >= StringUtils.parseHumanSizes(needed);
} else {
throw new BuildException("HasFreeSpace condition not supported on Java5 or less.");
}
} catch (Exception e) {
throw new BuildException(e);
}
}
private void validate() throws BuildException {
if (null == partition) {
throw new BuildException("Please set the partition attribute.");
}
if (null == needed) {
throw new BuildException("Please set the needed attribute.");
}
}
/**
* The partition/device to check
* @return the partition.
*/
public String getPartition() {
return partition;
}
/**
* Set the partition name.
* @param partition the name to use.
*/
public void setPartition(String partition) {
this.partition = partition;
}
/**
* The amount of free space required
* @return the amount required
*/
public String getNeeded() {
return needed;
}
/**
* Set the amount of space required.
* @param needed the amount required.
*/
public void setNeeded(String needed) {
this.needed = needed;
}
}
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