jcommon.extract.processors.WorkingDirectoryProcessor Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of init Show documentation

Java library for simple extracting and processing of embedded resources at runtime.

The newest version!


package jcommon.extract.processors;

import jcommon.core.StringUtil;
import jcommon.extract.*;
import org.w3c.dom.Document;
import org.w3c.dom.Node;

import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathException;
import java.io.File;

/**
 * Changes the process' working directory (cwd).
 * 
 * @author David Hoyt 
 */
@ResourceProcessor(
	tagName = "WorkingDirectory",
	supportsSize = false
)
public class WorkingDirectoryProcessor extends DefaultResourceProcessor {
	//
	public static final String
		  ATTRIBUTE_PATH	= "path"
	;
	//

	//
	private String path = StringUtil.empty;
	//

	//
	public WorkingDirectoryProcessor() {
	}

	public WorkingDirectoryProcessor(File path) {
		this(path.getAbsolutePath(), StringUtil.empty, StringUtil.empty);
	}

	public WorkingDirectoryProcessor(String path) {
		this(path, StringUtil.empty, StringUtil.empty);
	}

	public WorkingDirectoryProcessor(String path, String Title, String Description) {
		super(false, StringUtil.empty, StringUtil.empty, StringUtil.empty, Title, Description);

		this.path = path;
	}
	//
	
	@Override
	protected boolean loadSettings(final String fullResourceName, final IResourcePackage pkg, final XPath xpath, final Node node, final Document document, final IVariableProcessor varproc, final ResourceProcessorFactory factory) throws XPathException {
		this.path = stringAttributeValue(varproc, StringUtil.empty, node, ATTRIBUTE_PATH);
		
		return true;
	}

	@Override
	protected boolean processResource(final String fullResourceName, final IResourcePackage pkg, final IResourceFilter filter, final IResourceProgressListener progress) {
		final String dir = StringUtil.isNullOrEmpty(path) || ".".equalsIgnoreCase(path) ? jcommon.core.Process.queryWorkingDirectory() : path;
		if (StringUtil.isNullOrEmpty(dir))
			return true;

		final File d = new File(dir);
		if (!d.exists())
			return false;

		try {
			return jcommon.core.Process.changeWorkingDirectory(d);
		} catch(Throwable t) {
			return false;
		}
	}
}