okw.ResourceList Maven / Gradle / Ivy
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This is the core-module of OpenKeyWord. This module is automatically integrated by the adapters. In GUI automation, the core module is automatically integrated by the GUI modules (dependencies).
package okw;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Enumeration;
import java.util.regex.Pattern;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;
import java.util.zip.ZipFile;
import okw.log.Logger_Sngltn;
/**
* list resources available from the classpath @ *
*/
public class ResourceList
{
/**
* \copydoc Logger_Sngltn::getInstance()
*/
private static Logger_Sngltn Log = Logger_Sngltn.getInstance();
/**
* for all elements of java.class.path get a Collection of resources Pattern
* pattern = Pattern.compile(".*"); gets all resources
*
* @param pattern
* the pattern to match
* @return the resources in the order they are found
*/
public static Collection getResources(final Pattern pattern)
{
final ArrayList retval = new ArrayList();
final String classPath = System.getProperty("java.class.path", ".");
final String[] classPathElements = classPath.split(System.getProperty("path.separator"));
Log.ResOpenListDebug( "Class Path..." );
for (final String element : classPathElements)
{
Log.LogPrintDebug( element );
retval.addAll(getResources(element, pattern));
}
Log.ResCloseListDebug();
return retval;
}
private static Collection getResources(final String element, final Pattern pattern)
{
final ArrayList retval = new ArrayList();
final File file = new File(element);
if (file.isDirectory())
{
retval.addAll(getResourcesFromDirectory(file, pattern));
}
else
{
retval.addAll(getResourcesFromJarFile(file, pattern));
}
return retval;
}
private static Collection getResourcesFromJarFile(final File file, final Pattern pattern) {
final ArrayList retval = new ArrayList();
ZipFile zf;
try {
zf = new ZipFile(file);
} catch (final ZipException e) {
throw new Error(e);
} catch (final IOException e) {
throw new Error(e);
}
final Enumeration> e = zf.entries();
while (e.hasMoreElements()) {
final ZipEntry ze = (ZipEntry) e.nextElement();
final String fileName = ze.getName();
final boolean accept = pattern.matcher(fileName).matches();
if (accept) {
retval.add(fileName);
}
}
try {
zf.close();
} catch (final IOException e1) {
throw new Error(e1);
}
return retval;
}
private static Collection getResourcesFromDirectory(final File directory, final Pattern pattern) {
final ArrayList retval = new ArrayList();
final File[] fileList = directory.listFiles();
for (final File file : fileList) {
if (file.isDirectory()) {
retval.addAll(getResourcesFromDirectory(file, pattern));
} else {
try {
final String fileName = file.getCanonicalPath();
final boolean accept = pattern.matcher(fileName).matches();
if (accept) {
retval.add(fileName);
}
} catch (final IOException e) {
throw new Error(e);
}
}
}
return retval;
}
/**
* list the resources that match args[0]
*
* @param args
* args[0] is the pattern to match, or list all resources if there
* are no args
*/
public static void main(final String[] args) {
Pattern pattern;
if (args.length < 1) {
pattern = Pattern.compile(".*");
} else {
pattern = Pattern.compile(args[0]);
}
final Collection list = ResourceList.getResources(pattern);
for (final String name : list) {
System.out.println(name);
}
}
}