Synnefo

/*!

    FileReader.js - v0.9

    A lightweight wrapper for common FileReader usage.

    Copyright 2012 Brian Grinstead - MIT License.

    See http://github.com/bgrins/filereader.js for documentation.

*/

(function(window, document) {

    var FileReader = window.FileReader;

    var FileReaderSyncSupport = false;

    var workerScript = "self.addEventListener('message', function(e) { var data=e.data; try { var reader = new FileReaderSync; postMessage({ result: reader[data.readAs](data.file), extra: data.extra, file: data.file})} catch(e){ postMessage({ result:'error', extra:data.extra, file:data.file}); } }, false);";

    var syncDetectionScript = "self.addEventListener('message', function(e) { postMessage(!!FileReaderSync); }, false);";

    var fileReaderEvents = ['loadstart', 'progress', 'load', 'abort', 'error', 'loadend'];

    var FileReaderJS = window.FileReaderJS = {

        enabled: false,

        setupInput: setupInput,

        setupDrop: setupDrop,

        setupClipboard: setupClipboard,

        sync: false,

        output: [],

        opts: {

            dragClass: "drag",

            accept: false,

            readAsDefault: 'BinaryString',

            readAsMap: {

                'image/*': 'DataURL',

                'text/*' : 'Text'

            },

            on: {

                loadstart: noop,

                progress: noop,

                load: noop,

                abort: noop,

                error: noop,

                loadend: noop,

                skip: noop,

                groupstart: noop,

                groupend: noop,

                beforestart: noop

            }

        }

    };

    // Setup jQuery plugin (if available)

    if (typeof(jQuery) !== "undefined") {

        jQuery.fn.fileReaderJS = function(opts) {

            return this.each(function() {

                if (jQuery(this).is("input")) {

                    setupInput(this, opts);

                }

                else {

                    setupDrop(this, opts);

                }

            });

        };

        jQuery.fn.fileClipboard = function(opts) {

            return this.each(function() {

                setupClipboard(this, opts);

            });

        };

    }

    // Not all browsers support the FileReader interface.  Return with the enabled bit = false.

    if (!FileReader) {

        return;

    }

    // WorkerHelper is a little wrapper for generating web workers from strings

    var WorkerHelper = (function() {

        var URL = window.URL || window.webkitURL;

        var BlobBuilder = window.BlobBuilder || window.WebKitBlobBuilder || window.MozBlobBuilder;

        // May need to get just the URL in case it is needed for things beyond just creating a worker.

        function getURL (script) {

            if (window.Worker && BlobBuilder && URL) {

                var bb = new BlobBuilder();

                bb.append(script);

                return URL.createObjectURL(bb.getBlob());

            }

            return null;

        }

        // If there is no need to revoke a URL later, or do anything fancy then just return the worker.

        function getWorker (script, onmessage) {

            var url = getURL(script);

            if (url) {

                var worker = new Worker(url);

                worker.onmessage = onmessage;

                return worker;

            }

            return null;

        }

        return {

            getURL: getURL,

            getWorker: getWorker

        };

    })();

    // setupClipboard: bind to clipboard events (intended for document.body)

    function setupClipboard(element, opts) {

        if (!FileReaderJS.enabled) {

            return;

        }

        var instanceOptions = extend(extend({}, FileReaderJS.opts), opts);

        element.addEventListener("paste", onpaste, false);

        function onpaste(e) {

            var files = [];

            var clipboardData = e.clipboardData || {};

            var items = clipboardData.items || [];

            for (var i = 0; i < items.length; i++) {

                var file = items[i].getAsFile();

                if (file) {

                    // Create a fake file name for images from clipboard, since this data doesn't get sent

                    var matches = new RegExp("/\(.*\)").exec(file.type);

                    if (!file.name && matches) {

                        var extension = matches[1];

                        file.name = "clipboard" + i + "." + extension;

                    }

                    files.push(file);

                }

            }

            if (files.length) {

                processFileList(e, files, instanceOptions);

                e.preventDefault();

                e.stopPropagation();

            }

        }

    }

    // setupInput: bind the 'change' event to an input[type=file]

    function setupInput(input, opts) {

        if (!FileReaderJS.enabled) {

            return;

        }

        var instanceOptions = extend(extend({}, FileReaderJS.opts), opts);

        input.addEventListener("change", inputChange, false);

        input.addEventListener("drop", inputDrop, false);

        function inputChange(e) {

            processFileList(e, input.files, instanceOptions);

        }

        function inputDrop(e) {

            e.stopPropagation();

            e.preventDefault();

            processFileList(e, e.dataTransfer.files, instanceOptions);

        }

    }

    // setupDrop: bind the 'drop' event for a DOM element

    function setupDrop(dropbox, opts) {

        if (!FileReaderJS.enabled) {

            return;

        }

        var instanceOptions = extend(extend({}, FileReaderJS.opts), opts);

        var dragClass = instanceOptions.dragClass;

        var initializedOnBody = false;

        // Bind drag events to the dropbox to add the class while dragging, and accept the drop data transfer.

        dropbox.addEventListener("dragenter", onlyWithFiles(dragenter), false);

        dropbox.addEventListener("dragleave", onlyWithFiles(dragleave), false);

        dropbox.addEventListener("dragover", onlyWithFiles(dragover), false);

        dropbox.addEventListener("drop", onlyWithFiles(drop), false);

        // Bind to body to prevent the dropbox events from firing when it was initialized on the page.

        document.body.addEventListener("dragstart", bodydragstart, true);

        document.body.addEventListener("dragend", bodydragend, true);

        document.body.addEventListener("drop", bodydrop, false);

        function bodydragend(e) {

            initializedOnBody = false;

        }

        function bodydragstart(e) {

            initializedOnBody = true;

        }

        function bodydrop(e) {

            if (e.dataTransfer.files && e.dataTransfer.files.length ){

                e.stopPropagation();

                e.preventDefault();

            }

        }

        function onlyWithFiles(fn) {

            return function() {

                if (!initializedOnBody) {

                    fn.apply(this, arguments);

                }

            };

        }

        function drop(e) {

            e.stopPropagation();

            e.preventDefault();

            if (dragClass) {

                removeClass(dropbox, dragClass);

            }

            processFileList(e, e.dataTransfer.files, instanceOptions);

        }

        function dragenter(e) {

            e.stopPropagation();

            e.preventDefault();

            if (dragClass) {

                addClass(dropbox, dragClass);

            }

        }

        function dragleave(e) {

            if (dragClass) {

                removeClass(dropbox, dragClass);

            }

        }

        function dragover(e) {

            e.stopPropagation();

            e.preventDefault();

            if (dragClass) {

                addClass(dropbox, dragClass);

            }

        }

    }

    // setupCustomFileProperties: modify the file object with extra properties

    function setupCustomFileProperties(files, groupID) {

        for (var i = 0; i < files.length; i++) {

            var file = files[i];

            file.extra = {

                nameNoExtension: file.name.substring(0, file.name.lastIndexOf('.')),

                extension: file.name.substring(file.name.lastIndexOf('.') + 1),

                fileID: i,

                uniqueID: getUniqueID(),

                groupID: groupID,

                prettySize: prettySize(file.size)

            };

        }

    }

    // getReadAsMethod: return method name for 'readAs*' - http://www.w3.org/TR/FileAPI/#reading-a-file

    function getReadAsMethod(type, readAsMap, readAsDefault) {

        for (var r in readAsMap) {

            if (type.match(new RegExp(r))) {

                return 'readAs' + readAsMap[r];

            }

        }

        return 'readAs' + readAsDefault;

    }

    // processFileList: read the files with FileReader, send off custom events.

    function processFileList(e, files, opts) {

        var filesLeft = files.length;

        var group = {

            groupID: getGroupID(),

            files: files,

            started: new Date()

        };

        function groupEnd() {

            group.ended = new Date();

            opts.on.groupend(group);

        }

        function groupFileDone() {

            if (--filesLeft === 0) {

                groupEnd();

            }

        }

        FileReaderJS.output.push(group);

        setupCustomFileProperties(files, group.groupID);

        opts.on.groupstart(group);

        // No files in group - end immediately

        if (!files.length) {

            groupEnd();

            return;

        }

        var sync = FileReaderJS.sync && FileReaderSyncSupport;

        var syncWorker;

        // Only initialize the synchronous worker if the option is enabled - to prevent the overhead

        if (sync) {

            syncWorker = WorkerHelper.getWorker(workerScript, function(e) {

                var file = e.data.file;

                var result = e.data.result;

                // Workers seem to lose the custom property on the file object.

                if (!file.extra) {

                    file.extra = e.data.extra;

                }

                file.extra.ended = new Date();

                // Call error or load event depending on success of the read from the worker.

                opts.on[result === "error" ? "error" : "load"]({ target: { result: result } }, file);

                groupFileDone();

            });

        }

        Array.prototype.forEach.call(files, function(file) {

            file.extra.started = new Date();

            if (opts.accept && !file.type.match(new RegExp(opts.accept))) {

                opts.on.skip(file);

                groupFileDone();

                return;

            }

            if (opts.on.beforestart(file) === false) {

                opts.on.skip(file);

                groupFileDone();

                return;

            }

            var readAs = getReadAsMethod(file.type, opts.readAsMap, opts.readAsDefault);

            if (sync && syncWorker) {

                syncWorker.postMessage({

                    file: file,

                    extra: file.extra,

                    readAs: readAs

                });

            }

            else {

                var reader = new FileReader();

                reader.originalEvent = e;

                fileReaderEvents.forEach(function(eventName) {

                    reader['on' + eventName] = function(e) {

                        if (eventName == 'load' || eventName == 'error') {

                            file.extra.ended = new Date();

                        }

                        opts.on[eventName](e, file);

                        if (eventName == 'loadend') {

                            groupFileDone();

                        }

                    };

                });

                reader[readAs](file);

            }

        });

    }

    // checkFileReaderSyncSupport: Create a temporary worker and see if FileReaderSync exists

    function checkFileReaderSyncSupport() {

        var worker = WorkerHelper.getWorker(syncDetectionScript, function(e) {

            FileReaderSyncSupport = e.data;

        });

        if (worker) {

            worker.postMessage({});

        }

    }

    // noop: do nothing

    function noop() {

    }

    // extend: used to make deep copies of options object

    function extend(destination, source) {

        for (var property in source) {

            if (source[property] && source[property].constructor &&

                source[property].constructor === Object) {

                destination[property] = destination[property] || {};

                arguments.callee(destination[property], source[property]);

            }

            else {

                destination[property] = source[property];

            }

        }

        return destination;

    }

    // hasClass: does an element have the css class?

    function hasClass(el, name) {

        return new RegExp("(?:^|\\s+)" + name + "(?:\\s+|$)").test(el.className);

    }

    // addClass: add the css class for the element.

    function addClass(el, name) {

        if (!hasClass(el, name)) {

          el.className = el.className ? [el.className, name].join(' ') : name;

        }

    }

    // removeClass: remove the css class from the element.

    function removeClass(el, name) {

        if (hasClass(el, name)) {

          var c = el.className;

          el.className = c.replace(new RegExp("(?:^|\\s+)" + name + "(?:\\s+|$)", "g"), " ").replace(/^\s\s*/, '').replace(/\s\s*$/, '');

        }

    }

    // prettySize: convert bytes to a more readable string.

    function prettySize(bytes) {

        var s = ['bytes', 'kb', 'MB', 'GB', 'TB', 'PB'];

        var e = Math.floor(Math.log(bytes)/Math.log(1024));

        return (bytes/Math.pow(1024, Math.floor(e))).toFixed(2)+" "+s[e];

    }

    // getGroupID: generate a unique int ID for groups.

    var getGroupID = (function(id) {

        return function() {

            return id++;

        };

    })(0);

    // getUniqueID: generate a unique int ID for files

    var getUniqueID = (function(id) {

        return function() {

            return id++;

        };

    })(0);

    // The interface is supported, bind the FileReaderJS callbacks

    FileReaderJS.enabled = true;

})(this, document);

/* FileSaver.js

 * A saveAs() FileSaver implementation.

 * 2013-10-21

 *

 * By Eli Grey, http://eligrey.com

 * License: X11/MIT

 *   See LICENSE.md

 */

/*global self */

/*jslint bitwise: true, regexp: true, confusion: true, es5: true, vars: true, white: true,

  plusplus: true */

/*! @source http://purl.eligrey.com/github/FileSaver.js/blob/master/FileSaver.js */

var saveAs = saveAs

  || (typeof navigator !== 'undefined' && navigator.msSaveOrOpenBlob && navigator.msSaveOrOpenBlob.bind(navigator))

  || (function(view) {

	"use strict";

	var

		  doc = view.document

		  // only get URL when necessary in case BlobBuilder.js hasn't overridden it yet

		, get_URL = function() {

			return view.URL || view.webkitURL || view;

		}

		, URL = view.URL || view.webkitURL || view

		, save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a")

		, can_use_save_link =  !view.externalHost && "download" in save_link

		, click = function(node) {

			var event = doc.createEvent("MouseEvents");

			event.initMouseEvent(

				"click", true, false, view, 0, 0, 0, 0, 0

				, false, false, false, false, 0, null

			);

			node.dispatchEvent(event);

		}

		, webkit_req_fs = view.webkitRequestFileSystem

		, req_fs = view.requestFileSystem || webkit_req_fs || view.mozRequestFileSystem

		, throw_outside = function (ex) {

			(view.setImmediate || view.setTimeout)(function() {

				throw ex;

			}, 0);

		}

		, force_saveable_type = "application/octet-stream"

		, fs_min_size = 0

		, deletion_queue = []

		, process_deletion_queue = function() {

			var i = deletion_queue.length;

			while (i--) {

				var file = deletion_queue[i];

				if (typeof file === "string") { // file is an object URL

					URL.revokeObjectURL(file);

				} else { // file is a File

					file.remove();

				}

			}

			deletion_queue.length = 0; // clear queue

		}

		, dispatch = function(filesaver, event_types, event) {

			event_types = [].concat(event_types);

			var i = event_types.length;

			while (i--) {

				var listener = filesaver["on" + event_types[i]];

				if (typeof listener === "function") {

					try {

						listener.call(filesaver, event || filesaver);

					} catch (ex) {

						throw_outside(ex);

					}

				}

			}

		}

		, FileSaver = function(blob, name) {

			// First try a.download, then web filesystem, then object URLs

			var

				  filesaver = this

				, type = blob.type

				, blob_changed = false

				, object_url

				, target_view

				, get_object_url = function() {

					var object_url = get_URL().createObjectURL(blob);

					deletion_queue.push(object_url);

					return object_url;

				}

				, dispatch_all = function() {

					dispatch(filesaver, "writestart progress write writeend".split(" "));

				}

				// on any filesys errors revert to saving with object URLs

				, fs_error = function() {

					// don't create more object URLs than needed

					if (blob_changed || !object_url) {

						object_url = get_object_url(blob);

					}

					if (target_view) {

						target_view.location.href = object_url;

					} else {

                        window.open(object_url, "_blank");

                    }

					filesaver.readyState = filesaver.DONE;

					dispatch_all();

				}

				, abortable = function(func) {

					return function() {

						if (filesaver.readyState !== filesaver.DONE) {

							return func.apply(this, arguments);

						}

					};

				}

				, create_if_not_found = {create: true, exclusive: false}

				, slice

			;

			filesaver.readyState = filesaver.INIT;

			if (!name) {

				name = "download";

			}

			if (can_use_save_link) {

				object_url = get_object_url(blob);

				// FF for Android has a nasty garbage collection mechanism

				// that turns all objects that are not pure javascript into 'deadObject'

				// this means `doc` and `save_link` are unusable and need to be recreated

				// `view` is usable though:

				doc = view.document;

				save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a");

				save_link.href = object_url;

				save_link.download = name;

				var event = doc.createEvent("MouseEvents");

				event.initMouseEvent(

					"click", true, false, view, 0, 0, 0, 0, 0

					, false, false, false, false, 0, null

				);

				save_link.dispatchEvent(event);

				filesaver.readyState = filesaver.DONE;

				dispatch_all();

				return;

			}

			// Object and web filesystem URLs have a problem saving in Google Chrome when

			// viewed in a tab, so I force save with application/octet-stream

			// http://code.google.com/p/chromium/issues/detail?id=91158

			if (view.chrome && type && type !== force_saveable_type) {

				slice = blob.slice || blob.webkitSlice;

				blob = slice.call(blob, 0, blob.size, force_saveable_type);

				blob_changed = true;

			}

			// Since I can't be sure that the guessed media type will trigger a download

			// in WebKit, I append .download to the filename.

			// https://bugs.webkit.org/show_bug.cgi?id=65440

			if (webkit_req_fs && name !== "download") {

				name += ".download";

			}

			if (type === force_saveable_type || webkit_req_fs) {

				target_view = view;

			}

			if (!req_fs) {

				fs_error();

				return;

			}

			fs_min_size += blob.size;

			req_fs(view.TEMPORARY, fs_min_size, abortable(function(fs) {

				fs.root.getDirectory("saved", create_if_not_found, abortable(function(dir) {

					var save = function() {

						dir.getFile(name, create_if_not_found, abortable(function(file) {

							file.createWriter(abortable(function(writer) {

								writer.onwriteend = function(event) {

									target_view.location.href = file.toURL();

									deletion_queue.push(file);

									filesaver.readyState = filesaver.DONE;

									dispatch(filesaver, "writeend", event);

								};

								writer.onerror = function() {

									var error = writer.error;

									if (error.code !== error.ABORT_ERR) {

										fs_error();

									}

								};

								"writestart progress write abort".split(" ").forEach(function(event) {

									writer["on" + event] = filesaver["on" + event];

								});

								writer.write(blob);

								filesaver.abort = function() {

									writer.abort();

									filesaver.readyState = filesaver.DONE;

								};

								filesaver.readyState = filesaver.WRITING;

							}), fs_error);

						}), fs_error);

					};

					dir.getFile(name, {create: false}, abortable(function(file) {

						// delete file if it already exists

						file.remove();

						save();

					}), abortable(function(ex) {

						if (ex.code === ex.NOT_FOUND_ERR) {

							save();

						} else {

							fs_error();

						}

					}));

				}), fs_error);

			}), fs_error);

		}

		, FS_proto = FileSaver.prototype

		, saveAs = function(blob, name) {

			return new FileSaver(blob, name);

		}

	;

	FS_proto.abort = function() {

		var filesaver = this;

		filesaver.readyState = filesaver.DONE;

		dispatch(filesaver, "abort");

	};

	FS_proto.readyState = FS_proto.INIT = 0;

	FS_proto.WRITING = 1;

	FS_proto.DONE = 2;

	FS_proto.error =

	FS_proto.onwritestart =

	FS_proto.onprogress =

	FS_proto.onwrite =

	FS_proto.onabort =

	FS_proto.onerror =

	FS_proto.onwriteend =

		null;

	view.addEventListener("unload", process_deletion_queue, false);

	return saveAs;

}(this.self || this.window || this.content));

// `self` is undefined in Firefox for Android content script context

// while `this` is nsIContentFrameMessageManager

// with an attribute `content` that corresponds to the window

if (typeof module !== 'undefined') module.exports = saveAs;