HTML5 FIle Fun

ft.js

function testFileWriting () {
    window.webkitRequestFileSystem(
        window.PERSISTENT, 
        1024*1024, 
        function(fs) {
            console.log("requestFileSystem", arguments);
            var xhr = new XMLHttpRequest();
            xhr.open('GET', "http://cordova.apache.org/images/cordova_bot.png", true);
            xhr.responseType = 'blob';
            
            xhr.onerror = function () {
                console.log("xhr.onError", arguments);
            };
    
            xhr.onload = function(e) {
                console.log("xhr.onLoad", arguments);
                if (this.status === 200) {
                    fs.root.getFile(
                        "cordova_bot.png", 
                        {create: true}, 
                        function (fileEntry) {
                            console.log("getFile", arguments);
        
                            fileEntry.createWriter(function(writer) {
                                console.log("createWriter", arguments);
                                writer.onwriteend = function(e) {
                                    console.log("onWriteEnd", arguments);
                                    var img = document.createElement("img");
                                    img.src = blackberry.io.home + "data/webviews/webfs/persistent/local__0/cordova_bot.png";
                                    document.body.appendChild(img);
                                };
        
                                var blob = new Blob([xhr.response], {type: 'image/png'});
                                writer.write(blob);
                            });
                        },
                        function () {
                            console.log("getFileError", arguments);
                        }
                    );
                }
            };
    
            xhr.send();
        }
    );
}