Integrate last part of Python code from Vasiliy Chernov

1 files changed, 270 insertions, 0 deletions

diff --git a/pyserver/static/FileSaver.js b/pyserver/static/FileSaver.js
new file mode 100644
index 0000000..55193a5
--- /dev/null
+++ b/pyserver/static/FileSaver.js
@@ -0,0 +1,270 @@
+/* FileSaver.js
+ * A saveAs() FileSaver implementation.
+ * 1.1.20151003
+ *
+ * By Eli Grey, http://eligrey.com
+ * License: MIT
+ *   See https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md
+ */
+
+/*global self */
+/*jslint bitwise: true, indent: 4, laxbreak: true, laxcomma: true, smarttabs: true, plusplus: true */
+
+/*! @source http://purl.eligrey.com/github/FileSaver.js/blob/master/FileSaver.js */
+
+var saveAs = saveAs || (function(view) {
+	"use strict";
+	// IE <10 is explicitly unsupported
+	if (typeof navigator !== "undefined" && /MSIE [1-9]\./.test(navigator.userAgent)) {
+		return;
+	}
+	var
+		  doc = view.document
+		  // only get URL when necessary in case Blob.js hasn't overridden it yet
+		, get_URL = function() {
+			return view.URL || view.webkitURL || view;
+		}
+		, save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a")
+		, can_use_save_link = "download" in save_link
+		, click = function(node) {
+			var event = new MouseEvent("click");
+			node.dispatchEvent(event);
+		}
+		, is_safari = /Version\/[\d\.]+.*Safari/.test(navigator.userAgent)
+		, 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
+		// See https://code.google.com/p/chromium/issues/detail?id=375297#c7 and
+		// https://github.com/eligrey/FileSaver.js/commit/485930a#commitcomment-8768047
+		// for the reasoning behind the timeout and revocation flow
+		, arbitrary_revoke_timeout = 500 // in ms
+		, revoke = function(file) {
+			var revoker = function() {
+				if (typeof file === "string") { // file is an object URL
+					get_URL().revokeObjectURL(file);
+				} else { // file is a File
+					file.remove();
+				}
+			};
+			if (view.chrome) {
+				revoker();
+			} else {
+				setTimeout(revoker, arbitrary_revoke_timeout);
+			}
+		}
+		, 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);
+					}
+				}
+			}
+		}
+		, auto_bom = function(blob) {
+			// prepend BOM for UTF-8 XML and text/* types (including HTML)
+			if (/^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) {
+				return new Blob(["\ufeff", blob], {type: blob.type});
+			}
+			return blob;
+		}
+		, FileSaver = function(blob, name, no_auto_bom) {
+			if (!no_auto_bom) {
+				blob = auto_bom(blob);
+			}
+			// First try a.download, then web filesystem, then object URLs
+			var
+				  filesaver = this
+				, type = blob.type
+				, blob_changed = false
+				, object_url
+				, target_view
+				, dispatch_all = function() {
+					dispatch(filesaver, "writestart progress write writeend".split(" "));
+				}
+				// on any filesys errors revert to saving with object URLs
+				, fs_error = function() {
+					if (target_view && is_safari && typeof FileReader !== "undefined") {
+						// Safari doesn't allow downloading of blob urls
+						var reader = new FileReader();
+						reader.onloadend = function() {
+							var base64Data = reader.result;
+							target_view.location.href = "data:attachment/file" + base64Data.slice(base64Data.search(/[,;]/));
+							filesaver.readyState = filesaver.DONE;
+							dispatch_all();
+						};
+						reader.readAsDataURL(blob);
+						filesaver.readyState = filesaver.INIT;
+						return;
+					}
+					// don't create more object URLs than needed
+					if (blob_changed || !object_url) {
+						object_url = get_URL().createObjectURL(blob);
+					}
+					if (target_view) {
+						target_view.location.href = object_url;
+					} else {
+						var new_tab = view.open(object_url, "_blank");
+						if (new_tab == undefined && is_safari) {
+							//Apple do not allow window.open, see http://bit.ly/1kZffRI
+							view.location.href = object_url
+						}
+					}
+					filesaver.readyState = filesaver.DONE;
+					dispatch_all();
+					revoke(object_url);
+				}
+				, 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_URL().createObjectURL(blob);
+				setTimeout(function() {
+					save_link.href = object_url;
+					save_link.download = name;
+					click(save_link);
+					dispatch_all();
+					revoke(object_url);
+					filesaver.readyState = filesaver.DONE;
+				});
+				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
+			// Update: Google errantly closed 91158, I submitted it again:
+			// https://code.google.com/p/chromium/issues/detail?id=389642
+			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();
+									filesaver.readyState = filesaver.DONE;
+									dispatch(filesaver, "writeend", event);
+									revoke(file);
+								};
+								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, no_auto_bom) {
+			return new FileSaver(blob, name, no_auto_bom);
+		}
+	;
+	// IE 10+ (native saveAs)
+	if (typeof navigator !== "undefined" && navigator.msSaveOrOpenBlob) {
+		return function(blob, name, no_auto_bom) {
+			if (!no_auto_bom) {
+				blob = auto_bom(blob);
+			}
+			return navigator.msSaveOrOpenBlob(blob, name || "download");
+		};
+	}
+
+	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;
+
+	return saveAs;
+}(
+	   typeof self !== "undefined" && self
+	|| typeof window !== "undefined" && 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) {
+  module.exports.saveAs = saveAs;
+} else if ((typeof define !== "undefined" && define !== null) && (define.amd != null)) {
+  define([], function() {
+    return saveAs;
+  });
+}