MediaWiki:Bibtex2template.js

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/* customized hook */

String.prototype.trim = function() { return this.replace(/^\s+|\s+$/g, ''); }

function fn_b2f_main(){
   // constants
   var allowedEntryTypes= new Array( 
	'article','book','booklet','confernce','inbook',
	'incollection','inproceedings','manual',
	'masterthesis','misc','phdthesis',
	'proceedings','techreport','unpublished');

   var txtBibBegin= new String('\n<!-- Bibtex commented by bibtex2template (begin) \n\n');
   var txtBibEnd= new String('\n\n Bibtex commented by bibtex2template (end)-->');
   var txtTpBegin= new String('');
   var txtTpEnd= new String('<!--\n This template is generated by bibtex2template \n-->');
   var txtTpName = new String('i.publication');

   // get wiki text from editing area
   var text=document.getElementById("wpTextbox1").value;

   // Stop if the template is already in wiki text.
   if (text.search(txtTpName)!=-1){
     return false;
   }

   //try bibtex type, some of which are not yet supported
   for (x in allowedEntryTypes)
   {
	// use a simple regular expression format for bibtex (not allow '{','}' inside title)
       var pattern =new RegExp( "@" + allowedEntryTypes[x] + '[^{]*{(?:[^{}]|{[^{}]*})*}', 'i');
        
       temp = text.match(pattern);
       if (null != temp){

          text = text.replace(pattern, txtBibBegin+temp+txtBibEnd);
		
	  temp = new String(temp);

          // trim bibtype 
	  temp = temp.substring(temp.indexOf('\{')+1, temp.length-1);

          // add key field
	  temp = '\n  key       = ' + temp +'\n';

          // TODO: correct wrong bibtex  (missing ',' at the end of a bibtex entry)
          // this can be detected by temp.match(/=[^=\n,]*\n[^=]*=/g,',');

          document.getElementById("wpTextbox1").value +=  temp ;
		
          var bib_data= new Array();       
          var counter  = new Number(100); // avoid infinit loop
          while(counter >0) {
             counter   = counter  -1;

             var entry= new Array();

		// extract key
             var index1 = new Number(0);
             index1 = temp.search(/=/)+1; 
             if (index1==0)
		 break;
             var key = new String();
             key =  temp.substring(0,index1-2);
             key = key.trim();
             entry.push( key );

		// extract value
             var index2 = new Number(0);
             index2 = temp.search(/,[^,=]+=/)+1 ; 
             var value = new String();
             if (index2==0){
               index2 =   temp.length;
             } 
             value = temp.substring(index1,index2) ;

             // trim borders
 	      value= value.trim();
	      value= value.replace(/,$/ ,'');
	      value= value.replace(/\n/g ,'');
	      value= value.replace(/\s+/g ,' ');  // should be careful
 	      value= value.trim();
	      value= value.replace(/^{|}$|^"|"$|^'|'$/g ,'');
             if (key == 'author')
               value = value.replace (/\s*and/g,';');
             entry.push( value );

		// save key,value
             bib_data.push( entry);

		// update temp
             temp = temp.substring(index2);
          };
          

	  //render key value pairs to template

          var tp = new String();
          tp += '{{'+txtTpName+'.'+ allowedEntryTypes[x] ;
          tp += '\n';
          tp += ' |bibtype = ' + allowedEntryTypes[x] ; 
          tp += '\n';
          for ( kv in  bib_data){
              tp += ' |'+ bib_data[kv][0] +' = ' +bib_data[kv][1] ;
              tp += '\n';
          }
          tp += '}}';

	  //update wiki text in editing area
          document.getElementById("wpTextbox1").value =  txtTpBegin+ tp + txtTpEnd + text;

	  break; // if we found a match, we don't need to work anymore
	}// if
   }//for

   return false;
}


function fn_b2f_add_button() {

	// try to check if toolbar exists (it only show up in edit mode
	var toolbar = document.getElementById('toolbar');
	if (!toolbar) { return false; }

	// create image button
	var image = document.createElement("img");
	image.width = 23;
	image.height = 22;
	image.className = "mw-toolbar-editbutton";

	//image.src = "http://tw.rpi.edu/images/smwbp/icon_property.png";
	image.border = 0;
	image.alt = "b2t";
	image.title = "convert bibtex to template (i.publication)";
	image.style.cursor = "pointer";
	image.onclick = fn_b2f_main;

	// add image to toolbar
	toolbar.appendChild(image);
	
}

addOnloadHook(fn_b2f_add_button);