Chip 2003 November/Chip_2003-11_cd1.bin/software/dave/dqsd.exe/searches/jsenc.xml

Text File | 2002-12-13 | 5KB | 145 lines

<search function="jsenc">
  <name>Javascript String URL encoder/decoder</name>
  <description>
    Converts to/from url encoded strings<br/>
    <div class="helpboxDescLabels">Switches:</div>
    <table class="helpboxDescTable">
          <tr><td>/all</td><td> - </td><td>encode all characters</td></tr>
          <tr><td>/mailto</td><td> - </td><td>generates a javascript encoded mailto string that can be pasted into your webpage to hide it from email address harvesters</td></tr>
      </table>
    <div class="helpboxDescLabels">Examples:</div>
    <table class="helpboxDescTable">
          <tr><td>jsenc %78%20%79%20%7A</td><td> - </td><td>Returns x y z</td></tr>
          <tr><td>jsenc x%20y%20z</td><td> - </td><td>Returns x y z</td></tr>
          <tr><td>jsenc x y z</td><td> - </td><td>Returns x%20y%20z</td></tr>
          <tr><td>jsenc /all x y z</td><td> - </td><td>Returns %78%20%79%20%7A</td></tr>
        <tr><td>jsenc /mailto [e-mail]</td><td> - </td><td>link name and email address are both [e-mail]</td></tr>
        <tr><td>jsenc /mailto [e-mail] Microsoft Information</td><td> - </td><td>link name is Microsoft Information and email address is [e-mail]</td></tr>
      </table>
  </description>
  <category>Functions</category>
  <contributor>Brent Beardsley</contributor>

  <script><![CDATA[
    function jsenc(q)
    {
      if (nullArgs("jsenc",q))
        return false;

      var all_chars = false;
      var args = parseArgs(q, "all, mailto");
      var str = args.q;
      if (args.switches.length > 0) {
        if (args.switches[0].name == 'all') {
          all_chars = true;
        } else if (args.switches[0].name == 'mailto') {
          var r = jsenc_mailto(args.q);
          if (r == false) {
            // failed to encode mailto
            nullArgs("jsenc", "?");
          } else {
            // successfully encoded mailto
            setSearchWindowText(r, true);
          }
          return false;
        } else {
          nullArgs("jsenc", "?");
          return false;
        }
      }

      var ret_value = "";
      if (str.match(/(%[0-9A-Fa-f]{2}|%u[0-9A-Fa-f]{4})+/)) {
        // decode
        ret_value = jsenc_decode(str);
      } else {
        // encode
        ret_value = jsenc_encode(str, all_chars);
      }
      setSearchWindowText(ret_value, true);
    }

    function jsenc_mailto(q)
    {
      var r = q.match(/(\S+@\S+\.\S+)(\s+(.*))?/);
      if (r == null)
        return false;

      var email_address = r[1];
      var email_name = r[3];
      if (email_name == '') {
        email_name = email_address;
      }
      email_address = "mailto:"+email_address;

      var should_swap_name = (email_name.match(/@.*?\./) != null) ? true : false;

      var swapped_email_address = jsenc_email_swap(email_address);
      var swapped_email_name = should_swap_name ? jsenc_email_swap(email_name) : email_name;

      var encstr = "";
      encstr += "var s='"+swapped_email_address+"';var r='';for(var i=0;i<s.length;i++,i++){r=r+s.substring(i+1,i+2)+s.substring(i,i+1)}";
      if (should_swap_name) {
        // encrypt the name too if it's an email address
        encstr += "var u='"+swapped_email_name+"';var t='';for(var j=0;j<u.length;j++,j++){t=t+u.substring(j+1,j+2)+u.substring(j,j+1)}";
        encstr += ("document.write('<a href=\"'+r+'\">'+t+'</a>')");
      } else {
        // name isn't an email address - don't waste the space swapping it
        encstr += ("document.write('<a href=\"'+r+'\">"+email_name+"</a>')");
      }
      var outstr = "";
      outstr += "<SCRIPT language=\"javascript\">eval(unescape('";
      outstr += jsenc_encode(encstr, true);
      outstr += "'))</SCRIPT>";
      return outstr;
    }

    function jsenc_email_swap(str)
    {
        var r = '';
        for(var i=0;i<str.length;i++,i++)
        {
            r=r+str.substring(i+1,i+2)+str.substring(i,i+1);
        }
        return r;
    }

    function jsenc_encode(str, all_chars)
    {
      var myall_chars = (typeof all_chars != "undefined") ? all_chars : true;
      var outstr = '';
      if (myall_chars != true) {
        // encode all spaces, punctuation, accented characters, and any other non-ASCII characters
        outstr = escape(str);
      } else {
        // encode all characters
        for (var i=0; i < str.length; i++) {
          var code = str.charCodeAt(i);
          if (code > 255)    {
            // unicode
            var enc_str = "%u"+code.toString(16).toUpperCase();
            while (enc_str.length < 6)
              enc_str = "0" + enc_str;
            outstr += enc_str;
          } else {
            // ascii
            outstr += "%";
            outstr += ((code < 16) ? "0" : "") + code.toString(16).toUpperCase();
          }
        }
      }
      return outstr;
    }

    function jsenc_decode(str)
    {
      return unescape(str);
    }
  ]]></script>
  <copyright>
    Copyright (c) 2002 David Bau
    Distributed under the terms of the
    GNU Public License, Version 2 (http://www.gnu.org/copyleft/gpl.txt)
  </copyright>
</search>