X-Git-Url: http://git.nikiroo.be/?p=jvcard.git;a=blobdiff_plain;f=src%2Fbe%2Fnikiroo%2Fjvcard%2Fresources%2FResourceList.java;fp=src%2Fbe%2Fnikiroo%2Fjvcard%2Fresources%2FResourceList.java;h=6f87c937d07488fb8f6c37e23f10f6ab25569a21;hp=0000000000000000000000000000000000000000;hb=e27d1404e9222796fb6097ab41cff873148b65c7;hpb=71ac69a01a1051b24386ac67124c0aee657f3225

diff --git a/src/be/nikiroo/jvcard/resources/ResourceList.java b/src/be/nikiroo/jvcard/resources/ResourceList.java
new file mode 100644
index 0000000..6f87c93
--- /dev/null
+++ b/src/be/nikiroo/jvcard/resources/ResourceList.java
@@ -0,0 +1,123 @@
+package be.nikiroo.jvcard.resources;
+
+// code copied from from:
+// 		http://forums.devx.com/showthread.php?t=153784,
+// via:
+// 		http://stackoverflow.com/questions/3923129/get-a-list-of-resources-from-classpath-directory
+
+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;
+
+/**
+ * list resources available from the classpath @ *
+ */
+public class ResourceList {
+
+	/**
+	 * 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<String> getResources(final Pattern pattern) {
+		final ArrayList<String> retval = new ArrayList<String>();
+		final String classPath = System.getProperty("java.class.path", ".");
+		final String[] classPathElements = classPath.split(System
+				.getProperty("path.separator"));
+		for (final String element : classPathElements) {
+			retval.addAll(getResources(element, pattern));
+		}
+		return retval;
+	}
+
+	private static Collection<String> getResources(final String element,
+			final Pattern pattern) {
+		final ArrayList<String> retval = new ArrayList<String>();
+		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<String> getResourcesFromJarFile(final File file,
+			final Pattern pattern) {
+		final ArrayList<String> retval = new ArrayList<String>();
+		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<? extends ZipEntry> 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<String> getResourcesFromDirectory(
+			final File directory, final Pattern pattern) {
+		final ArrayList<String> retval = new ArrayList<String>();
+		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<String> list = ResourceList.getResources(pattern);
+		for (final String name : list) {
+			System.out.println(name);
+		}
+	}
+}