michael@0: var DEBUG = false;
michael@0: 
michael@0: var clientID = "javascript";
michael@0: var key = "theme:button";
michael@0: var nsICache = Components.interfaces.nsICache;
michael@0: 
michael@0: function getCacheService()
michael@0: {
michael@0:     var nsCacheService = Components.classes["@mozilla.org/network/cache-service;1"];
michael@0:     var service = nsCacheService.getService(Components.interfaces.nsICacheService);
michael@0:     return service;
michael@0: }
michael@0: 
michael@0: function createCacheSession(clientID, storagePolicy, streamable)
michael@0: {
michael@0:     var service = getCacheService();
michael@0:     var session = service.createSession(clientID, storagePolicy, streamable);
michael@0:     return session;
michael@0: }
michael@0: 
michael@0: function openCacheEntry(mode)
michael@0: {
michael@0:     var session = createCacheSession(clientID, nsICache.STORE_ON_DISK, true);
michael@0:     var entry = session.openCacheEntry(key, mode);
michael@0:     return entry;
michael@0: }
michael@0: 
michael@0: function wrapInputStream(input)
michael@0: {
michael@0:     var nsIScriptableInputStream = Components.interfaces.nsIScriptableInputStream;
michael@0:     var factory = Components.classes["@mozilla.org/scriptableinputstream;1"];
michael@0:     var wrapper = factory.createInstance(nsIScriptableInputStream);
michael@0:     wrapper.init(input);
michael@0:     return wrapper;
michael@0: }
michael@0: 
michael@0: function test()
michael@0: {
michael@0:     var outputEntry = openCacheEntry(nsICache.ACCESS_WRITE);
michael@0:     var output = outputEntry.transport.openOutputStream(0, -1, 0);
michael@0:     if (output.write("foo", 3) == 3)
michael@0:         print("disk cache write works!");
michael@0:     else
michael@0:         print("disk cache write broken!");
michael@0: 
michael@0:     // store some metadata.
michael@0:     outputEntry.setMetaDataElement("size", "3");
michael@0: 
michael@0:     output.close();
michael@0:     outputEntry.markValid();
michael@0:     outputEntry.close();
michael@0: 
michael@0:     var inputEntry = openCacheEntry(nsICache.ACCESS_READ);
michael@0:     var input = wrapInputStream(inputEntry.transport.openInputStream(0, -1, 0));
michael@0: 
michael@0:     if (input.read(input.available()) == "foo")
michael@0:         print("disk cache read works!");
michael@0:     else
michael@0:         print("disk cache read broken!");
michael@0: 
michael@0:     if (inputEntry.getMetaDataElement("size") == "3")
michael@0:         print("disk cache metadata works!");
michael@0:     else
michael@0:         print("disk cache metadata broken!");
michael@0: 
michael@0:     input.close();
michael@0:     inputEntry.close();
michael@0: }
michael@0: 
michael@0: function doom()
michael@0: {
michael@0:     var doomedEntry = openCacheEntry(nsICache.ACCESS_READ_WRITE);
michael@0:     doomedEntry.doom();
michael@0:     doomedEntry.close();
michael@0: }
michael@0: 
michael@0: if (DEBUG) {
michael@0:     getCacheService();
michael@0:     print("cache service loaded.");
michael@0: } else {
michael@0:     print("running disk cache test.");
michael@0:     test();
michael@0:     print("disk cache test complete.");
michael@0: }