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