XML firstChild issue

Posted: 02/18/09 05:46:38

How do you obtain the initial node? Better yet, do you have a tiny example that shows this, please?

Thanks much :)

Posted: 02/18/09 07:50:01

Posted: 02/18/09 18:55:50

Here is the example in my code that is causing the issue. if the .deb package hasn't been updated to 0.99.7 then I don't have the newest version and this error might be fixed already, but someone may want to try it just to make sure since the updates were mostly syntax...

//open up the file

auto file = new File(filename);

//make sure the file opened properly

if(file is null)

return false;

//initialize and fill a buffer

char[] xml = cast(char[])file.read(); //define a document and parse the file

auto doc = new Document!(char);

doc.parse(xml); auto root = doc.root.firstChild; foreach(texture; root.query.child("texture")) {

if(!texture.hasChildren())

continue;

//this is were the problem is, if i were to leave off .nextSibling, it would give me a mystery element...

auto element = texture.firstChild().nextSibling();

}

Posted: 02/18/09 21:31:04

Same issue occurs with that change (either using doc.root.firstChild or doc.root.lastChild)

My file is as such:

<graphics>

<texture>

<src>font.bmp</src>

<id>font</id>

</texture>

<texture>

<src>test.bmp</src>

<id>test</id>

</texture>

</graphics>

Here is a loop I put in to further test:

auto root = doc.root.lastChild;

foreach(child; root.query.child("texture"))
		{
			if(!child.hasChildren())
				continue;
			auto element = child.firstChild();
			Stdout.format("Value: {}\n", element.value());
			if(element is null || element.name() != "src")
			    Stdout("Found no src...\n");
		}

When run, I get ouput:

Value:

Found no source...

Value:

Found no source...

When I use child.firstChild().nextSibling() I get the following (which is the correct output):

Value: font.bmp

Value: test.bmp

Doing child.lastChild also doesn't work...

Posted: 02/19/09 01:39:06

That gives the same output as with root.query.child()...

auto root = doc.root.firstChild;
		
foreach(texture; root.query.descendant("texture"))
{
  if(!texture.hasChildren())
     Stdout("Invalid Texture\n");
  auto element = texture.firstChild();
  Stdout("Found a texture\n");
  Stdout.format("Value: {}\n", element.value());
}

It is hard to format the output it gives in this forum for some reason... but it does:

Found a texture
Value:

Found a texture
Value:

Notice that it isn't printing nothing as the value, it is printing an extra newline at the very least (can't tell if there are spaces in my console...)

The query is finding the right number of textures, but each element the query gives me no matter how many child elements it has, has a "blank" element as it's first child element for some reason. Beyond that "blank" first texture everything is working fine as I've worked around it since it is a consistent case.

I don't really want to use descendant because I don't want texture objects if they are embedded in other objects, they need to be direct children of the root to be valid for me.