public TextElements GetElementsByPath(List <XPathBlock> block)
{
TextElements elements = new TextElements();
for (int i = 0; i < this.SubElementsCount; i++)
{
var subelem = this.SubElements[i];
if (subelem.ElementType != TextElementType.ElementNode)
{
continue;
}
for (int j = 0; j < block.Count; j++)
{
var curblock = block[j];
if (curblock.IsAttributeSelector)
{
if (curblock.BlockName == "*")
{
if (subelem.ElemAttr.Count == 0)
{
continue;
}
}
else
{
if (!subelem.ElemAttr.HasAttribute(curblock.BlockName))
{
continue;
}
}
}
else
{
if (curblock.BlockName != "*" && curblock.BlockName != subelem.ElemName)
{
continue;
}
}
if (elements.Contains(subelem) || (curblock.XPathExpressions.Count == 0 || XPathActions.XExpressionSuccess(subelem, curblock.XPathExpressions)))
{
elements.Add(subelem);
XPathActions.Eliminate(elements, curblock);
}
break;
}
}
return(elements);
}
public bool XPathSuccessSingle(XPathBlock block)
{
if (this.ElementType != TextElementType.ElementNode || (block.BlockName != "*" && block.BlockName != this.ElemName))
{
return(false);
}
if (block.XPathExpressions.Count > 0)
{
int myIndex = this.Index;
for (int i = 0; i < block.XPathExpressions.Count; i++)
{
if (!XPathActions.XExpressionSuccess(this, block.XPathExpressions[i], null, myIndex))
{
return(false);
}
}
}
return(true);
}
public TextElements FindByXPath(XPathBlock block)
{
TextElements foundedElems = new TextElements();
if (block.IsAttributeSelector)
{
foundedElems = this.GetElementsHasAttributes(block.BlockName, block.BlockType == XPathBlockType.XPathBlockScanAllElem);
}
else
{
if (!string.IsNullOrEmpty(block.BlockName))
{
if (block.BlockName == ".")
{
foundedElems.Add(this);
return(foundedElems);
}
else if (block.BlockName == "..")
{
foundedElems.Add(this.Parent);
return(foundedElems);
}
else
{
foundedElems = this.GetElementsByTagName(block.BlockName, block.BlockType == XPathBlockType.XPathBlockScanAllElem);
}
}
}
if (block.XPathExpressions.Count > 0 && foundedElems.Count > 0)
{
for (int i = 0; i < block.XPathExpressions.Count; i++)
{
var exp = block.XPathExpressions[i];
foundedElems = XPathActions.Eliminate(foundedElems, exp);
if (foundedElems.Count == 0)
{
break;
}
}
}
return(foundedElems);
}
public TextElements FindByXPathPar(XPathPar xpar, TextElements senderitems = null)
{
var elements = new TextElements();
elements = this.FindByXPathByBlockContainer(xpar.XPathBlockList, senderitems);
if (xpar.XPathExpressions.Count > 0 && elements.Count > 0)
{
elements.SortItems();
for (int j = 0; j < xpar.XPathExpressions.Count; j++)
{
var exp = xpar.XPathExpressions[j];
elements = XPathActions.Eliminate(elements, exp);
if (elements.Count == 0)
{
break;
}
}
}
return(elements);
}
public TextElements FindByXPathOld(string xpath)
{
var elements = new TextElements();
XPathFunctions fn = new XPathFunctions();
var xpathblock = XPathItem.Parse(xpath);
XPathActions actions = new XPathActions();
actions.XPathFunctions = new XPathFunctions();
for (int i = 0; i < xpathblock.XPathBlocks.Count; i++)
{
var xblock = xpathblock.XPathBlocks[i];
if (i == 0)
{
elements = FindByXPath(xblock);
}
else
{
TextElements newelements = new TextElements();
for (int j = 0; j < elements.Count; j++)
{
var elem = elements[j];
var nextelems = elem.FindByXPath(xblock);
for (int k = 0; k < nextelems.Count; k++)
{
if (newelements.Contains(nextelems[k]))
{
continue;
}
newelements.Add(nextelems[k]);
}
}
elements = newelements;
}
}
return(elements);
}
