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InstaSynchP Library

Basic function that are needed by several scripts use with @require

As of 03/01/2015. See the latest version.

This script should not be not be installed directly. It is a library for other scripts to include with the meta directive // @require https://update.greatest.deepsurf.us/scripts/5647/30464/InstaSynchP%20Library.js 

// ==UserScript==
// @name        InstaSynchP Library
// @namespace   InstaSynchP
// @description Basic function that are needed by several scripts use with @require

// @version     1.1.4
// @author      Zod-
// @source      https://github.com/Zod-/InstaSynchP-Library
// @license     MIT

// @include     http://*.instasynch.com/*
// @include     http://instasynch.com/*
// @include     http://*.instasync.com/*
// @include     http://instasync.com/*
// @grant       none
// @run-at      document-start
// ==/UserScript==

//http://joquery.com/2012/string-format-for-javascript
if (typeof String.prototype.format !== 'function') {
  String.prototype.format = function () {
    // The string containing the format items (e.g. "{0}")
    // will and always has to be the first argument.
    var theString = this,
      i,
      regEx;

    // start with the second argument (i = 1)
    for (i = 0; i < arguments.length; i += 1) {
      // "gm" = RegEx options for Global search (more than one instance)
      // and for Multiline search
      regEx = new RegExp("\\{" + (i) + "\\}", "gm");
      theString = theString.replace(regEx, arguments[i]);
    }
    return theString;
  };
}
//http://stackoverflow.com/a/646643
if (typeof String.prototype.startsWith !== 'function') {
  String.prototype.startsWith = function (str) {
    return this.slice(0, str.length) == str;
  };
}
if (typeof String.prototype.endsWith != 'function') {
  String.prototype.endsWith = function (str) {
    return this.slice(-str.length) == str;
  };
}

//http://stackoverflow.com/a/1978419
if (typeof String.prototype.contains !== 'function') {
  String.prototype.contains = function (it) {
    return this.indexOf(it) !== -1;
  };
}

function isUdef(obj) {
  return typeof obj === 'undefined';
}

function commonPrefix(array) {
  if (typeof array === 'undefined' || array.length === 0) {
    return;
  }
  var sorted = array.slice(0).sort(function (a, b) {
      return a.toLowerCase().localeCompare(b.toLowerCase());
    }),
    first = sorted[0],
    firstLower = first.toLowerCase(),
    last = sorted[sorted.length - 1].toLowerCase(),
    L = first.length,
    i = 0;
  while (i < L && firstLower.charAt(i) === last.charAt(i)) i++;
  return first.substring(0, i);
}

function isBlackname(username) {
  "use strict";
  if (typeof username !== 'string') {
    return false;
  }
  return username.match(/^(?:[A-Za-z0-9]|(?:[\-_](?![\-_]))){5,16}$/) !== null;
}

function isGreyname(username) {
  "use strict";
  if (typeof username !== 'string') {
    return false;
  }
  return username.match(/^(?:[A-Za-z0-9]|(?:[\-_](?![\-_]))){1,16}$/) !== null;
}

function htmlDecode(value) {
  "use strict";
  return $('<div/>').html(value).text();
}

function activeVideoIndex() {
  "use strict";
  return $('#playlist .active').index();
}

function findUserId(id) {
  "use strict";
  var i;
  for (i = 0; i < window.users.length; i += 1) {
    if (id === window.users[i].id) {
      return window.users[i];
    }
  }
  return undefined;
}

function findUserUsername(name) {
  "use strict";
  var i;
  for (i = 0; i < window.users.length; i += 1) {
    if (name === window.users[i].name) {
      return window.users[i];
    }
  }
  return undefined;
}

function videojs() {
  "use strict";
  return $('.video-js')[0];
}

function reloadPlayer() {
  "use strict";
  if (window.video) {
    window.video.destroy();
  }
  window.global.sendcmd('reload', null);
}

function addSystemMessage(message) {
  "use strict";
  window.addMessage({
    username: ""
  }, message, 'system');
}

function addErrorMessage(message) {
  "use strict";
  window.addMessage({
    username: ""
  }, message, 'errortext');
}

function videoInfoEquals(a, b) {
  "use strict";
  if (!a || !b) {
    return false;
  }
  if (a.provider && a.provider === b.provider &&
    a.mediaType && a.mediaType === b.mediaType &&
    a.id && a.id === b.id) {
    return true;
  }
  return false;
}

function scrollDown(){
  "use strict";
  $('#chat-messages').scrollTop($('#chat-messages')[0].scrollHeight);
}