+// Copyright 2003 Adam Megacz, see the COPYING file for licensing [GPL]
+package org.xwt;
+
+import java.io.*;
+import java.util.*;
+import java.util.zip.*;
+import org.xwt.js.*;
+import org.xwt.util.*;
+import org.bouncycastle.util.encoders.Base64;
+
+/** Manages access to ~/.xwt */
+public class LocalStorage {
+
+ static String xwtDirName = System.getProperty("user.home") + java.io.File.separatorChar + ".xwt";
+
+ static File xwtDir = null;
+ static File cacheDir = null;
+
+ static {
+ try {
+ xwtDir = new File(xwtDirName);
+ if (!xwtDir.mkdirs()) xwtDir = null;
+ } catch (Exception e) {
+ Log.log(LocalStorage.class, "unable to create xwt directory " + xwtDirName);
+ }
+ try {
+ cacheDir = new File(xwtDirName + java.io.File.separatorChar + "cache");
+ if (!cacheDir.mkdirs()) cacheDir = null;
+ } catch (Exception e) {
+ Log.log(LocalStorage.class, "unable to create cache directory " + xwtDirName + java.io.File.separatorChar + "cache");
+ }
+ }
+
+
+ // FEATURE: we ought to be able to do stuff like sha1-checking and date checking on cached resources
+ public static class Cache {
+
+ private static void delTree(File f) throws IOException {
+ if (f.isDirectory()) {
+ String[] s = f.list();
+ for(int i=0; i<s.length; i++)
+ delTree(new File(f.getPath() + File.separatorChar + s[i]));
+ }
+ f.delete();
+ }
+
+ public static void flush() throws IOException {
+ delTree(cacheDir);
+ cacheDir.mkdirs();
+ }
+
+ public static File getCacheFileForKey(String key) {
+ // FEATURE: be smarter here
+ return new File(cacheDir.getPath() + File.separatorChar + new String(Base64.encode(key.getBytes())));
+ }
+
+ }
+}