[XML] TDOMNode.NodeValue is empty
lazarus / 21-General

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CC · 2022-03-28 08:55

Hi,

this is quite strange:

VER:
FPC 3.2 up to date fixes branch
document: xml version="1.0" encoding="UTF-8"

The first few levels are only categories. Here is where reading the
actual data begins:

After    iNode:= CategoryNode .FirstChild is  executed
    1. iNode.NodeName has the right value;
    2. but iNode.NodeValue is always empty even though it always has a
value in the file.

Debugging uncovered  that this function is called to get the value:

Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i function
TDOMNode.GetNodeValue: DOMString;begin  Result := '';end;  

Which explains why NodeValue is always empty, but I would expect some
overridden function to be called instead with access to the actual
value.
iNode.NodeType = ELEMENT_NODE. But after checking the DOM unit's
source neither TDOMElement nor it's ancestors have any overridden
GetNodeValue.  The only such overridden function is

Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i function
TDOMCharacterData.GetNodeValue: DOMString;begin  Result :=
FNodeValue;end; 
So it seems iNode.NodeType should be a TEXT_NODE instead of
ELEMENT_NODE. Why is it not?


This should be so simple. Where am I going wrong?

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CC · 2022-03-28 10:13

The answer to my question is so trivial:

iNode.TextContent should be used instead of iNode.NodeValue