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file saver

library for save various data into file

Dieses Skript sollte nicht direkt installiert werden. Es handelt sich hier um eine Bibliothek für andere Skripte, welche über folgenden Befehl in den Metadaten eines Skriptes eingebunden wird // @require https://update.greasyfork.org/scripts/39714/259782/file%20saver.js 

// ==UserScript==
// @name        file saver
// @namespace   https://greasyfork.org/users/174399
// @description library for save various data into file
// @version     0.1.0
// ==/UserScript==

function saveFile(name, source)
{
	var a = document.createElement('a');
	a.download = name;
	a.href = source;
	document.body.appendChild(a);
	a.click();
	a.parentNode.removeChild(a);
}
function createFile(data, type){return createResource(new Blob([data], {type: type}));}
function createResource(blob)
{
	var wurl = window.URL || window.webkitURL,
		resource = wurl.createObjectURL(blob);
	setTimeout(function(){wurl.revokeObjectURL(resource);}, 1e4);
	return resource;
}
function createBlob(base64, type, len)
{
	len = len || 1024;
	var bytes = [];
	for(var offset = 0, charString = atob(base64), chunk, chunkBytes; offset < charString.length; offset += len)
	{
		chunk = charString.slice(offset, offset + len);
		chunkBytes = new Array(chunk.length);
		for(var i = 0; i < chunk.length; ++i)
			chunkBytes[i] = chunk.charCodeAt(i);
		bytes.push(new Uint8Array(chunkBytes));
	}
	return new Blob(bytes, {type: type});
}
function saveData(name, data, type){saveFile(name, createFile(data, type));}
function saveBlob(name, blob){saveFile(name, createResource(blob));}
function saveBase64(name, base64, type){saveBlob(name, createBlob(base64, type));}