User:Subh83/JavaScriptTools/utilsCommunications.js

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Documentation for this user script can be added at User:Subh83/JavaScriptTools/utilsCommunications.

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 /****************************************************
 * Created by Subhrajit Bhattacharya [[User:Subh83]] *
 * Licensed under GNU-GPL v3.0 *
 *****************************************************/
 varUserSubh83_utilsCommunications=true;


 // ================================================================
 /*** URL encoding, special character encoding, URL reading, etc. utils ***/

 functionXEncodeURIComponent(str){
 varret=encodeURIComponent(str);
 ret=ret.replace(/;/g,"%3B");
 ret=ret.replace(/\\/g,"%22");
 ret=ret.replace(/'/g,"%27");

 returnret;
 }

 functionHTMLSpecialCharactersEncode(str){
 returnstr.replace(/&/g,"&amp;").replace(/>/g,"&gt;").replace(/</g,"&lt;").replace(/"/g,"&quot;");
 }

 functionGETparam(name){
 varregexS="[\\?&]"+name+"=([^&#]*)";
 varregex=newRegExp(regexS);
 varresults=regex.exec(window.location.href);
 if(results==null)returnfalse;
 elsereturnresults[1];
 }


 // ================================================================
 /*** XMLHttp request helper functions ***/

 // From User:Supadawg/util.js
 functioncreateXMLHTTP(method,uri,callback,options){
 varxmlhttp=window.XMLHttpRequest?newXMLHttpRequest()
 :window.ActiveXObject?newActiveXObject("Microsoft.XMLHTTP")
 :null;
 if(xmlhttp){
 xmlhttp.onreadystatechange=callback;
 xmlhttp.open(method,uri,true);

 if(options&&options.headers)
 for(varkeyinoptions.headers)
 xmlhttp.setRequestHeader(key,options.headers[key]);

 varbody=null;
 if(options&&options["body"])
 body=options["body"];
 xmlhttp.send(body);
 }
 returnxmlhttp;
 }


 // Wikipedia specific: Fetch the source text of a wiki page
 varxmlhttpWIKITEXT;
 varxmlhttpWIKITEXTSent=false;
 varxmlhttpWIKITEXTDone=false;

 varFetchWikiTextAndPerformAction_lastReturn=false;
 functionFetchWikiTextAndPerformAction(pagename,secNum,ActionFun,params,cycles){
 // 'ActionFun' needs to be handle to a function that takes 2 parameters.
 // The first is the wikitext, and the second is a structure containing other parameters.
 // That is, ActionFun(WikiText, params);
 // Set 'secNum' to -1 to get full page.
 cycles=(typeof(cycles)!='undefined')?cycles:50;
 if(cycles<=0)return;
 FetchWikiTextAndPerformAction_lastReturn=false;

 if(!xmlhttpWIKITEXTSent){
 varfetchURL=(wgServer+wgScript)+"?action=raw&title="+pagename;
 if(secNum>=0)fetchURL+="&section="+secNum;
 xmlhttpWIKITEXTSent=true;
 xmlhttpWIKITEXT=createXMLHTTP("GET",fetchURL,function(){xmlhttpWIKITEXTDone=true;});
 }

 if(!xmlhttpWIKITEXTDone||!xmlhttpWIKITEXT||xmlhttpWIKITEXT.readyState!=4)
 setTimeout(FetchWikiTextAndPerformAction,200,pagename,secNum,ActionFun,params,cycles-1);
 else{
 xmlhttpWIKITEXTSent=false;
 xmlhttpWIKITEXTDone=false;

 if(xmlhttpWIKITEXT.status==200){
 // Main actions
 FetchWikiTextAndPerformAction_lastReturn=ActionFun(xmlhttpWIKITEXT.responseText,params);
 returnret;
 }else
 alert("Problem retrieving data - status: "+xmlhttpWIKITEXT.status);
 }
 }

 // ================================================================
 /*** For handling cookies ***/

 functionsetCookie(name,value){
 document.cookie=name+"="+value+"; path=/";
 }

 functiongetCookie(name){
 varnameeq=name+"=";
 varcookies=document.cookie.split(';');
 for(vari=0;i<cookies.length;i++){
 nameval=cookies[i].split("=");
 if(nameval[0].replace(/^\s*/,"").replace(/\s*$/,"")==name)
 returnnameval[1];
 }
 returnnull;
 }

 functiondelCookie(name){
 setCookie(name,"",-1);
 }

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