Skynet

function trim(str){ return str.replace(/(^\s*)|(\s*$)/g,""); }

function recursiveNodes(array,dom,layer){
  if( layer==0 ) return ;
  if(layer>0){
     --layer;
     if( dom.hasChildNodes && dom.hasChildNodes() ){
       for(var i=0;i<dom.childNodes.length;i++ ){
      array.push(dom.childNodes.item(i));
          recursiveNodes(array, dom.childNodes.item(i),layer ) ;
       }
     }else return  ;
  }else if(layer<0){
     ++layer;
     if( dom.parentNode ){
           array.push( dom.parentNode );
           recursiveNodes( array,dom.parentNode,layer)
     }else return ;
  }
}

/*
[@name || && > < >= <= != @location='UK']
*/
function singleStep(dom,stepAction,stepStr){
  var allArrData = [] ;
  var arrData = [] ;
  var num = stepAction.split(/\//).length ;
  recursiveNodes(allArrData,dom,num==2?1:999);
 
  stepStr = trim(stepStr) ;
  var nodeName  ;
  var nodeNum ;
  var conds = true ;
     //判断单匹配 是否有 属性对比  [@..=..]
  if( /\[(.*?)\]/.test(stepStr) ){
      nodeName = trim( /.*?(?=\[{1})/g.exec(stepStr)[0]   ).replace(/\*/g,".*") ;
      conds = /\[(.*?)\]/.exec(stepStr)[1].replace(/\*/g,".*") ;
      if(! isNaN(conds) ){
    nodeNum = parseInt(conds)-1;

      }else{
      //属性 替换为
        conds = conds.replace(/(@)(.*?)(?=\W)/g," allArrData[i].getAttribute('$2') ") ;
        conds = conds.replace( /([\W]+)(.*?)::\'(.*?)\'/g," $1 /$3/g.test($2) " ) ;
        conds = conds.replace( /(text\(\))/g ," allArrData[i].innerHTML ") ;
        conds = conds.replace( /([\w\s])(=)/g ,"$2=") ;

      }
  }else{
      nodeName = stepStr ;
  }

  for(var j=i=0;i<allArrData.length;i++){
     if(  eval('/'+nodeName+'/i.test( allArrData[i].nodeName ) ')   ){
    if(typeof nodeNum=="number"){
      if(j==nodeNum){ arrData.push( allArrData[i] );  return arrData; }
      else     ++j;
    }else if( eval(' allArrData[i].getAttribute && '+conds) ){
          arrData.push( allArrData[i] );
        }
     }
  }
  return arrData ;
}


function getXpath(dom,xpathStr){
   var xpaths = xpathStr.split(/(\/{1,2})/g);
    var arrDom = [dom] ;
   for(var i=1;i<xpaths.length;i=i+2){
        var arrData = [];
        for(var j=0;j<arrDom.length;j++)
          arrData = arrData.concat( singleStep(arrDom[j],xpaths[i],xpaths[i+1]) );
        arrDom = arrData ;
   }
   return arrDom ;
}

















******************************************************************************************************
function trim(str){ return str.replace(/(^\s*)|(\s*$)/g,""); }

function recursiveNodes(array,dom,layer){
  if( layer==0 ) return ;
  if(layer>0){
     --layer;
     if( dom.hasChildNodes && dom.hasChildNodes() ){
       for(var i=0;i<dom.childNodes.length;i++ ){
      array.push(dom.childNodes.item(i));
          recursiveNodes(array, dom.childNodes.item(i),layer ) ;
       }
     }else return  ;
  }else if(layer<0){
     ++layer;
     if( dom.parentNode ){
           array.push( dom.parentNode );
           recursiveNodes( array,dom.parentNode,layer)
     }else return ;
  }

}



/*
  [@name || && > < >= <= != @location='UK']
*/
function singleStep(dom,stepAction,stepStr){
  var allArrData = [] ;
  var arrData = [] ;
  var num = stepAction.split(/\//).length ;
  recursiveNodes(allArrData,dom,num==2?1:999);
 
  stepStr = trim(stepStr) ;
  var nodeName  ;
  var conds = true ;
     //判断单匹配 是否有 属性对比  [@..=..]
  if( /\[(.*?)\]/.test(stepStr) ){
      nodeName = trim( /^(.*?)\[{1}/.exec(stepStr)[1] ) ;
               //属性 替换为
      conds = /\[(.*?)\]/.exec(stepStr)[1].replace(/(@)(.*?)(?=\W)/g," allArrData[i].getAttribute('$2').toString() ") ;
      conds = conds.replace( /([\W]+)(.*?)::\'(.*?)\'/g," $1 /$3/g.test($2) " ) ;
        conds = conds.replace( /(text\(\))/g ," allArrData[i].innerHTML ") ;
      conds = conds.replace( /([\w\s])(=)/g ,"$2=") ;
  }else{
      nodeName = stepStr ;
     }

  for(var i=0;i<allArrData.length;i++){
     if(  new RegExp(nodeName, 'i').test( allArrData[i].nodeName ) && eval(conds) ){
         arrData.push( allArrData[i] );
             }
  }
  return arrData ;
}


function getXpath(dom,xpathStr){
   var xpaths = xpathStr.split(/(\/{1,2})/g);
    var arrDom = [dom] ;
   for(var i=1;i<xpaths.length;i=i+2){
        var arrData = [];
        for(var j=0;j<arrDom.length;j++)
          arrData = arrData.concat( singleStep(arrDom[j],xpaths[i],xpaths[i+1]) );
        arrDom = arrData ;
   }
   return arrDom ;
}