/** Convenience function for easy access to the text inside an element. Although easy
* and concise, GetText() is limited compared to getting the TiXmlText child
* and accessing it directly.
*
* If the first child of 'this' is a TiXmlText, the GetText()
* returns the character string of the Text node, else null is returned.
*
* This is a convenient method for getting the text of simple contained text:
* @verbatim
* <foo>This is text</foo>
* const char* str = fooElement.GetText();
* @endverbatim
*
* 'str' will be a pointer to "This is text".
*
* Note that this function can be misleading. If the element foo was created from
* this XML:
* @verbatim
* <foo><b>This is text</b></foo>
* @endverbatim
*
* then the value of str would be null. The first child node isn't a text node, it is
* another element. From this XML:
* @verbatim
* <foo>This is <b>text</b></foo>
* @endverbatim
* GetText() will return "This is ".
*
* WARNING: GetText() accesses a child node - don't become confused with the
* similarly named TiXmlHandle::Text() and TiXmlNode::ToText() which are
* safe type casts on the referenced node.
*/
public string GetText()
{
TiXmlNode child = this.FirstChild();
if (child != null)
{
TiXmlText childText = child.ToText();
if (childText != null)
{
return(childText.Value());
}
}
return(null);
}
/// <summary>
/// Print the Element to a FILE stream.
/// </summary>
public override void Print(StringBuilder cfile, int depth)
{
//assert( cfile );
for (int i = 0; i < depth; i++)
{
//fprintf( cfile, " " );
cfile.Append(" ");
}
cfile.Append("<"); cfile.Append(value);
//fprintf( cfile, "<%s", value.c_str() );
for (TiXmlAttribute attrib = attributeSet.First(); attrib != null; attrib = attrib.Next())
{
cfile.Append(" ");
//fprintf(cfile, " ");
attrib.Print(cfile, depth);
}
// There are 3 different formatting approaches:
// 1) An element without children is printed as a <foo /> node
// 2) An element with only a text child is printed as <foo> text </foo>
// 3) An element with children is printed on multiple lines.
if (firstChild == null)
{
//fprintf(cfile, " />");
cfile.Append(" />");
}
else if (firstChild == lastChild && firstChild.ToText() != null)
{
//fprintf(cfile, ">");
cfile.Append(">");
firstChild.Print(cfile, depth + 1);
//fprintf(cfile, "</%s>", value.c_str());
cfile.Append("</"); cfile.Append(value); cfile.Append(">");
}
else
{
//fprintf(cfile, ">");
cfile.Append(">");
for (TiXmlNode node = firstChild; node != null; node = node.NextSibling())
{
if (node.ToText() == null)
{
//fprintf(cfile, "\n");
cfile.Append("\n");
}
node.Print(cfile, depth + 1);
}
//fprintf(cfile, "\n");
cfile.Append("\n");
for (int i = 0; i < depth; ++i)
{
//fprintf(cfile, " ");
cfile.Append(" ");
}
//fprintf(cfile, "</%s>", value.c_str());
cfile.Append("</"); cfile.Append(value); cfile.Append(">");
}
}
/// <summary>
/// Return the handle as a TiXmlText. This may return null.
/// </summary>
TiXmlText ToText()
{
return((node != null && node.ToText() != null) ? node.ToText() : null);
}