twiteaks.user.js

// ==UserScript==
// @name           Twiteaks
// @namespace      http://d.hatena.ne.jp/murky-satyr
// @include        http://twitter.com/*
// @include        https://twitter.com/*
// ==/UserScript==

// LongURLize => http://gist.github.com/103277

var [, user, sid] =
/^https?:\/\/twitter\.com\/(\w+)(?:\/status(?:es)?\/(\d+))?$/.exec(location) || 0

// Sidebar Replies
user && !sid && xget(
  'http://search.twitter.com/search.json?q=%40'+ user,
  function(xhr){
    var {results} = JSON.parse(xhr.responseText);
    var rf = document.getElementById('rssfeed');
    if(!rf) return;
    rf.parentNode.appendChild(document.createElement('div')).innerHTML =
      [let(uurl = 'http://twitter.com/'+ r.from_user)
       '<p>'+ r.from_user.link(uurl) +': '+ r.text +'<br/>'+
       new Date(r.created_at).toString().link(uurl +'/status/'+ r.id) +'</p>'
       for each(r in results)].join('');
  });

if(sid){
  // Status Thread
  let [em] = document.getElementsByClassName('entry-meta');
  if(em &&
     Array.some(
       em.getElementsByTagName('a'),
       function(a) /\bin reply to\b/.test(a.textContent))){
    let dv = em.parentNode.appendChild(clmn('div'));
    xget(
      'http://search.twitter.com/search/thread/'+ sid,
      function(xhr){
        dv.innerHTML = xhr.responseText +'<style>'+ <![CDATA[
          .thread div {display:inline}
          .avatar img {width:24px; height:24px}
          .inthread:not(.result) {display:none}
          ]]> +'</style>';
      },
      function({status, statusText}){
        dv.innerHTML = <><b>{status}</b> {statusText}</>;
      });
  }
  // Favstar
  const FFU = 'http://favstar.fm/users/';
  xget(FFU + user +'/status/'+ sid, function({responseText: htm}){
    if(!/<div[^>]*ss="avatarList"[^]+?(?=<div class="clear")/.exec(htm)) return
    document.getElementById('permalink').appendChild(clmn(
      'div',
      ('<style>.favs{font:bold 333% monospace}</style>'+
       RegExp.lastMatch.replace(/[/]users[/]/g, FFU))));
  });
  // Preceding/Following Tweets
  xget(
    'http://twitter.com/'+ user +'?max_id='+
    sid.replace(/^(.+)([2-9].*)$/, function(_, a, b) a + ~-b),
    function(x){
      var [, ls] = /<ol id='timeline'[^>]*>([^]+?)<\/ol>/.exec(x.responseText) || 0
      if(!ls) return;
      document.getElementById('container').insertBefore(
        clmn('ul', ls),
        document.getElementById('footer'));
    });
  let gft = document.getElementById('container').insertBefore(
    clmn('button', 'get following tweets'),
    document.querySelector('#header + *'));
  gft.addEventListener('click', function(){
    gft.innerHTML = '<img src="http://a1.twimg.com/images/spinner.gif"/>';
    xget(
      'http://search.twitter.com/search?from='+ user +'&since_id='+ sid,
      function(x){
        var lis = x.responseText.match(/<li class=\"result[^]+?<\/li>/g);
        var lmn = lis ?
          clmn('ul', lis.join('')) : clmn('em', 'No following tweets.');
        for each(let a in qsa(lmn, '.avatar')) a.parentNode.removeChild(a);
        for each(let i in qsa(lmn, '.info')) i.className = 'meta';
        for each(let m in qsa(lmn, '.msgtxt')){
          let p = m.parentNode;
          p.parentNode.replaceChild(m, p);
          m.classList.add('entry-content');
        }
        gft.parentNode.replaceChild(lmn, gft);
      });
  }, false);
}

function xget(url, ok, ng){
  GM_xmlhttpRequest({method: 'GET', url: url, onload: ok, onerror: ng});
}
function clmn(name, htm){
  var lmn = document.createElement(name);
  if(htm) lmn.innerHTML = htm;
  return lmn;
}
function qsa(lm, sl) Array.slice(lm.querySelectorAll(sl));