/* URL class for JavaScript
 * Copyright (C) 2003 Johan Känngård, <johan AT kanngard DOT net>
 * http://dev.kanngard.net/
 * The GPL is located at: http://www.gnu.org/licenses/gpl.txt
 */

/* Creates a new URL object with the specified url String. */
function URL(url){
        if(url.length==0) eval('throw "Invalid URL ['+url+'];');
        this.url=url;
        this.port=-1;
        this.query=(this.url.indexOf('?')>=0)?this.url.substring(this.url.indexOf('?')+1):'';
        if(this.query.indexOf('#')>=0) this.query=this.query.substring(0,this.query.indexOf('#'));
        this.protocol='';
        this.host='';
        var protocolSepIndex=this.url.indexOf('://');
        if(protocolSepIndex>=0){
                this.protocol=this.url.substring(0,protocolSepIndex).toLowerCase();
                this.host=this.url.substring(protocolSepIndex+3);
                if(this.host.indexOf('/')>=0) this.host=this.host.substring(0,this.host.indexOf('/'));
                var atIndex=this.host.indexOf('@');
                if(atIndex>=0){
                        var credentials=this.host.substring(0,atIndex);
                        var colonIndex=credentials.indexOf(':');
                        if(colonIndex>=0){
                                this.username=credentials.substring(0,colonIndex);
                                this.password=credentials.substring(colonIndex);
                        }else{
                                this.username=credentials;
                        }
                        this.host=this.host.substring(atIndex+1);
                }
                var portColonIndex=this.host.indexOf(':');
                if(portColonIndex>=0){
                        this.port=this.host.substring(portColonIndex);
                        this.host=this.host.substring(0,portColonIndex);
                }
                this.file=this.url.substring(protocolSepIndex+3);
                this.file=this.file.substring(this.file.indexOf('/'));
        }else{
                this.file=this.url;
        }
        if(this.file.indexOf('?')>=0) this.file=this.file.substring(0, this.file.indexOf('?'));
        var refSepIndex=url.indexOf('#');
        if(refSepIndex>=0){
                this.file=this.file.substring(0,refSepIndex);
                this.reference=this.url.substring(this.url.indexOf('#'));
        }else{
                this.reference='';
        }
        this.path=this.file;
        if(this.query.length>0) this.file+='?'+this.query;
        if(this.reference.length>0) this.file+='#'+this.reference;

        this.getPort=getPort;
        this.getQuery=getQuery;
        this.getProtocol=getProtocol;
        this.getHost=getHost;
        this.getUserName=getUserName;
        this.getPassword=getPassword;
        this.getFile=getFile;
        this.getReference=getReference;
        this.getPath=getPath;
        this.getArgumentValue=getArgumentValue;
        this.getArgumentValues=getArgumentValues;
        this.toString=toString;

        /* Returns the port part of this URL, i.e. '8080' in the url 'http://server:8080/' */
        function getPort(){
                return this.port;
        }

        /* Returns the query part of this URL, i.e. 'Open' in the url 'http://server/?Open' */
        function getQuery(){
                return this.query;
        }

        /* Returns the protocol of this URL, i.e. 'http' in the url 'http://server/' */
        function getProtocol(){
                return this.protocol;
        }

        /* Returns the host name of this URL, i.e. 'server.com' in the url 'http://server.com/' */
        function getHost(){
                return this.host;
        }

        /* Returns the user name part of this URL, i.e. 'joe' in the url 'http://joe@server.com/' */
        function getUserName(){
                return this.username;
        }

        /* Returns the password part of this url, i.e. 'secret' in the url 'http://joe:secret@server.com/' */
        function getPassword(){
                return this.password;
        }

        /* Returns the file part of this url, i.e. everything after the host name. */
        function getFile(){
                return this.file;
        }

        /* Returns the reference of this url, i.e. 'bookmark' in the url 'http://server/file.html#bookmark' */
        function getReference(){
                return this.reference;
        }

        /* Returns the file path of this url, i.e. '/dir/file.html' in the url 'http://server/dir/file.html' */
        function getPath(){
                return this.path;
        }

        /* Returns the FIRST matching value to the specified key in the query.
           If the url has a non-value argument, like 'Open' in '?Open&bla=12', this method
           returns the same as the key: 'Open'...
           The url must be correctly encoded, ampersands must encoded as &amp;
           I.e. returns 'value' if the key is 'key' in the url 'http://server/?Open&amp;key=value' */
        function getArgumentValue(key){
                var a=this.getArgumentValues();
                if(a.length<1) return '';
                for(i=0;i<a.length;i++){
                        if(a[i][0]==key) return a[i][1];
                }
                return '';
        }

        /* Returns all key / value pairs in the query as a two dimensional array */
        function getArgumentValues(){
                var a=new Array();
                var b=this.query.split('&amp;');
                var c='';
                if(b.length<1) return a;
                for(i=0;i<b.length;i++){
                        c=b[i].split('=');
                        a[i]=new Array(c[0],((c.length==1)?c[0]:c[1]));
                }
                return a;
        }

        /* Returns a String representation of this url */
        function toString(){
                return this.url;
        }
}


/* function showRelated
 * call showRelated( 'query query query');
 * displays related google links
 */

function showRelated( Related) {

  var QueryPreString = "<span style='background:#EEEECC; padding-top:4px; line-heigt:140%;'>[";
  var QueryPostString = " ]</span>&nbsp;&nbsp;";

  var GoogleQueryString
    = ' <a href="http://www.google.com/search?&sitesearch={url_host}&q={query}">{query}</a>';

  var RelatedString = new String;
  var RelatedArray = new Array;
  RelatedArray = Related.split( " ");


  /* parse url */
  var location_href = location.href;
  var url = new URL( location_href);

  var url_host_this_domain = url.getHost();

  for ( var i=0; i < RelatedArray.length; i++)
  {
    SubRelatedString = GoogleQueryString;
    SubRelatedString =
      SubRelatedString.replace( /{query}/, RelatedArray[ i]);
    SubRelatedString =
      SubRelatedString.replace( /{query}/, RelatedArray[ i]);

    /* url parse */
    SubRelatedString = SubRelatedString.replace( /{url_host}/, url_host_this_domain);

    RelatedString += SubRelatedString;
  }
  RelatedString = QueryPreString + RelatedString + QueryPostString;
  document.write( RelatedString);
}


function showRelatedSites( RelatedUrl) {

  var GoogleQueryString
    = ' - <a href="http://www.google.com/search&q=related:{url}">Similar pages</a><br/>';

  SubRelatedString = GoogleQueryString;
  SubRelatedString =
    SubRelatedString.replace( /{url}/, RelatedUrl);

  document.write( SubRelatedString);
}