Video Download Button

This script adds a download button on many video sites.
当前为 2016-06-22 提交的版本，查看最新版本。
换行
// ==UserScript==
// @name        Video Download Button
// @namespace   VDBMB
// @author      MegaByte
// @description This script adds a download button on many video sites.
// @require     http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js
// @run-at 		document-end
// @noframes
// @include     http*://*streamcloud.eu/*
// @include     http*://*powerwatch.pw/*
// @include     http*://*vivo.sx/*
// @include     http*://*shared.sx/*
// @version     1.0
// @grant       GM_addStyle
// ==/UserScript==


var site = window.location.href || document.URL;

if(site.includes("streamcloud.eu")) streamcloud();
else if(site.includes("powerwatch.pw")) powerwatch();
else if(site.includes("vivo.sx")) vivo();
else if(site.includes("shared.sx")) shared();

function streamcloud() {
  if($("#player_code").length === 0) return;
	var url = searchInScripts("file:\\s?\"https?:\\/\\/.+?\\.mp4\"", "http", ".mp4");
	if(url !== null) 
		$(".container-fluid ul.nav").prepend("<li>" + button(url) + "</li>");
}

function powerwatch() {
  if($("#vplayer").length === 0) return;
	var url = searchInScripts("file:\\s?\"https?:\\/\\/.+?\\.mp4\"", "http", ".mp4");
	if(url !== null) {
		$("h5.h4-fine").html("<span class='head'>"+$("h5.h4-fine").html()+"</span><span class='down'>" + button(url) + "</span>")
		GM_addStyle("h5.h4-fine { display: flex; } h5.h4-fine .head { flex-grow: 1; } h5.h4-fine .down { flex-grow: 0; }");
	}
}

function vivo() {
  var e = $(".stream-content");
  if(e.length === 0) return;
  var url = e.attr("data-url");
  if(typeof url === "undefined") return;
  $(".light-switch.btn").parent().prepend("<div class='light-switch btn btn-info download'>" + button(url) + "</div>");
  GM_addStyle(".download.light-switch { margin-right: 15px; }  .download.light-switch a { text-decoration: none; color: white; }");
}

function shared() {
  var e = $(".stream-content");
  if(e.length === 0) return;
  var url = e.attr("data-url");
  if(typeof url === "undefined") return;
  $(".light-switch").parent().prepend("<div class='download'>" + button(url) + "</div>");
  GM_addStyle(".addthis_toolbox { width: unset !important; }  .download { position: relative; background-color: #FF6550; color: #FFF; float: right; font-size: 13px; font-weight: 700; height: 32px; line-height: 32px; margin: 0 0 0 10px; padding: 0 15px; width: auto; cursor: pointer; -webkit-transition: all .35s ease-in; -moz-transition: all .35s ease-in; -o-transition: all .35s ease-in; transition: all .35s ease-in; opacity: 1; z-index: 300; }  .download a { text-decoration: none; color: white;}");
}

function searchInScripts(patt, start, end) {
  var url = null;
	$("body script").each(function() {
    var regex = new RegExp(patt);
		var out = regex.exec($(this).html());
		if(typeof out !== "undefined" && out !== "" && out !== null) {
      if(typeof out !== "string") out = out[0];
      var s = out.indexOf(start);
      var e = out.lastIndexOf(end);
      if( s!==-1 && e!==-1 ) url = out.substring(s, e);
      return false;
    }
	});
  return url;
}

function button(url) {
  return "<a href='" + url + "' download target='_blank'>Download</a>";
}