Newb Question about Parsing

[Leeor Dicker]

I hate having to post here and ask because I can usually figure things out using examples... I don't know why but the provided examples in the documents confuse me...

Anyway, to the point, I am trying to parse the following XML file:

<?xml version="1.0" ?>
<tileset name="demo">
    <page filename="demo.bmp">
        <tile name="Grass">
            <rectangle x="0" y="0" w="64" h="32"/>
            <anchor x="31" y="15"/>
            <colorkey r="255" g="0" b="255"/>
        </tile>
        <tile name="Rocky Path">
            <rectangle x="64" y="0" w="64" h="32"/>
            <anchor x="31" y="15"/>
            <colorkey r="255" g="0" b="255"/>
        </tile>
    </page>
    <page filename="tree01.bmp">
        <tile name="Tree Thing 1">
            <rectangle x="0" y="0" w="74" h="79"/>
            <anchor x="35" y="77"/>
            <colorkey r="255" g="0" b="255"/>
        </tile>
    </page>
</tileset>

This should be pretty straight forward. Yet, I can't seem to get anything to parse properly... and it's mostly because I don't quite understand the classes behind TinyXML.

Also, I'm not using STL so therein might lie the problem of why I don't understand the examples.

I'm not so much looking for exact code rather than a decent explanation of the objects I need to create and which functions to use to get the information stored in the various nodes.

Thanks again for any help that anybody can provide!

- Leeor

[Leeor Dicker]

Ok, I think I figured out part of the problem I was having. I changed the XML document to this instead:

<tileset>
    <name>Demo</name>
    <page>
        <image>demo.bmp</image>
        <tile>
            <description>Grass 1</description>
            <rectangle x="0" y="0" w="64" h="32"/>
            <anchor x="31" y="15"/>
            <colorkey r="255" g="0" b="255"/>
        </tile>
        <tile>
            <description>Rocky Path</description>
            <rectangle x="64" y="0" w="64" h="32"/>
            <anchor x="31" y="15"/>
            <colorkey r="255" g="0" b="255"/>
        </tile>
    </page>
    <page>
        <image>tree01.bmp</image>
        <tile>
            <description>Tree Thing 1</description>
            <rectangle x="0" y="0" w="74" h="79"/>
            <anchor x="35" y="77"/>
            <colorkey r="255" g="0" b="255"/>
        </tile>
    </page>
</tileset>

I also have the following code:

TiXmlDocument doc( tset1.xml" );

if( doc.LoadFile() )
{
    MessageBox( NULL, "Couldn't load XML file!", NULL, MB_OK | MB_ICONERROR | MB_TASKMODAL );
    exit(-1);
}
    
TiXmlNode* tileSet = 0;
while( tileSet = doc.IterateChildren( "tileset", tileSet ) )
{
    MessageBox( NULL, "Found first Node", NULL, MB_OK | MB_TASKMODAL );
}

This seems to be pretty straight forward... but the 'while' is never entered. I'm sure that if I can just get it into the 'while' loop I can iterate through the whole document and be able to get all the information I need.

<sigh>

Thanks for any help!

[Leeor Dicker]

Ok -- I figured it out.

I had a logic error in this line:

if( doc.LoadFile() )

It should instead be:

if( !doc.LoadFile() )

Everything is all squared away now... ^_^