// De.linque.nt BlogDecrypt 
// version 0.1 BETA!
// 2005-06-20
// Copyright (c) 2005, James Britt
// Released under the GPL license
// http://www.gnu.org/copyleft/gpl.html
//
// --------------------------------------------------------------------
//
// This is a Greasemonkey user script.  To install it, you need
// Greasemonkey 0.3 or later: http://greasemonkey.mozdev.org/
// Then restart Firefox and revisit this script.
// Under Tools, there will be a new menu item to "Install User Script".
// Accept the default configuration and install.
//
// To uninstall, go to Tools/Manage User Scripts,
// select "Blog Decrypt", and click Uninstall.
//
// Big thanks to Mark Pilgrim for writing Dive Into Greasemonkey!
// http://diveintogreasemonkey.org/
//
// --------------------------------------------------------------------
//
// ==UserScript==
// @name          Del.icio.us Post Reformer
// @namespace     http://neurogami.com/greasemonkey/
// @description   Script to locate specific posts on Del.icio.us and reform them
// Items page
// @include       http://del.icio.us/*
// ==/UserScript==


( function() {

// rot13 origin: 2000-01-08 nospam@geht.net http://tools.geht.net/rot13.html
// Use at own risk.

 var last="";
 var rot13map;

// The problem is that JavaScript 1.0
// does not provide a Char to Numeric value conversion
// Thus we define a map.
// Because there are 64K UniCode characters, this map does not cover all characters.
function rot13init() {
  var map = new Array();
  var s   = "abcdefghijklmnopqrstuvwxyz";
  
  for (i=0; i<s.length; i++)
    map[s.charAt(i)]			= s.charAt((i+13)%26);
  for (i=0; i<s.length; i++)
    map[s.charAt(i).toUpperCase()]	= s.charAt((i+13)%26).toUpperCase();
  return map;
}

function rot13(a) {
  if (!rot13map)
    rot13map=rot13init();
  s = "";
  for (i=0; i<a.length; i++)     {
      var b = a.charAt(i);

      s	+= (b>='A' && b<='Z' || b>='a' && b<='z' ? rot13map[b] : b);
    }
  return s;
}

 function reform_title( el ) {
    el.innerHTML =  rot13( el.innerHTML )
  }

  function reform_content( el ) {
    el.innerHTML =  rot13(  el.innerHTML )
  }

  function xpath(query) {
    return document.evaluate(query, document, null,  XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
  }

  function sub_xpath( query, node ) {
    return document.evaluate(query, node, null,  XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
  }
  
  function is_delinquent( node ) {
    var re = /De\.linque\.nt\d\d/
    var links = sub_xpath( "h3/a[@href]", node )
    if ( re.test(   links.snapshotItem( 0 ).href  ) ) 
      return true
    return false
  }


  function process_posts() {
    var re = /De\.linque\.nt\d\d/
    var post_ary = xpath( "//div[@class='post']");

    
    for ( var i=0; i < post_ary.snapshotLength; i++) {
      var n = post_ary.snapshotItem( i )
      if ( is_delinquent( n ) )   {

        reform_title(  sub_xpath( 'h3/a', n ).snapshotItem( 0 )  )  
        reform_content(  sub_xpath( 'div[@class]', n ).snapshotItem( 0 )  )  
      }
    }
  }
  process_posts();

} )();