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-rw-r--r--src/jogl/classes/com/sun/opengl/impl/io/Locator.java106
1 files changed, 106 insertions, 0 deletions
diff --git a/src/jogl/classes/com/sun/opengl/impl/io/Locator.java b/src/jogl/classes/com/sun/opengl/impl/io/Locator.java
new file mode 100644
index 0000000..8638299
--- /dev/null
+++ b/src/jogl/classes/com/sun/opengl/impl/io/Locator.java
@@ -0,0 +1,106 @@
+package com.sun.opengl.impl.io;
+
+import javax.media.opengl.util.*;
+
+import java.util.*;
+import java.nio.*;
+import java.io.*;
+import java.net.*;
+
+/** Utilities for dealing with streams. */
+
+public class Locator {
+ private Locator() {}
+
+ /**
+ * Locates the resource using 'getResource(String path, ClassLoader cl)',
+ * with this context ClassLoader and the path as is,
+ * as well with the context's package name path plus the path.
+ *
+ * @see #getResource(String, ClassLoader)
+ */
+ public static URL getResource(Class context, String path) {
+ ClassLoader contextCL = (null!=context)?context.getClassLoader():null;
+ URL url = getResource(path, contextCL);
+ if (url == null && null!=context) {
+ // Try again by scoping the path within the class's package
+ String className = context.getName().replace('.', '/');
+ int lastSlash = className.lastIndexOf('/');
+ if (lastSlash >= 0) {
+ String tmpPath = className.substring(0, lastSlash + 1) + path;
+ url = getResource(tmpPath, contextCL);
+ }
+ }
+ return url;
+ }
+
+ /**
+ * Locates the resource using the ClassLoader's facility,
+ * the absolute URL and absolute file.
+ *
+ * @see ClassLoader#getResource(String)
+ * @see ClassLoader#getSystemResource(String)
+ * @see URL#URL(String)
+ * @see File#File(String)
+ */
+ public static URL getResource(String path, ClassLoader cl) {
+ URL url = null;
+ if (cl != null) {
+ url = cl.getResource(path);
+ } else {
+ url = ClassLoader.getSystemResource(path);
+ }
+ if(!urlExists(url)) {
+ url = null;
+ try {
+ url = new URL(path);
+ } catch (MalformedURLException e) { }
+ }
+ if(!urlExists(url)) {
+ url = null;
+ try {
+ File file = new File(path);
+ if(file.exists()) {
+ url = file.toURL();
+ }
+ } catch (MalformedURLException e) {}
+ }
+ return url;
+ }
+
+ /**
+ * Generates a path for the 'relativeFile' relative to the 'absoluteFileLocation'
+ */
+ public static String getRelativeOf(String absoluteFileLocation, String relativeFile) {
+ File file = new File(absoluteFileLocation);
+ file = file.getParentFile();
+ while (file != null && relativeFile.startsWith("../")) {
+ file = file.getParentFile();
+ relativeFile = relativeFile.substring(3);
+ }
+ if (file != null) {
+ String res = new File(file, relativeFile).getPath();
+ // Handle things on Windows
+ return res.replace('\\', '/');
+ } else {
+ return relativeFile;
+ }
+ }
+
+ /**
+ * Returns true, if the url exists,
+ * trying to open a connection.
+ */
+ public static boolean urlExists(URL url) {
+ boolean v = false;
+ if(null!=url) {
+ try {
+ URLConnection uc = url.openConnection();
+ v = true;
+ } catch (IOException ioe) { }
+ }
+ return v;
+ }
+
+}
+