Simple XML outputter

[ssigala]

This class simplifies the work when generating XML documents: no more need to take care of XML indentation and closing the right section.

Example of application:

Code: Select all

wxFileOutputStream stream("test.xml");

XMLOutput xmlout(stream);
xmlout.OpenSection("document");

xmlout.OpenSection("info");
xmlout.OpenSection("items");

xmlout.WriteItem("<foo x=\"1\" />");
xmlout.WriteItem("<foo x=\"2\" />");
xmlout.WriteItem("<foo x=\"3\" />");

xmlout.CloseSection(); // items
xmlout.CloseSection(); // info

xmlout.CloseSection(); // document

stream.Close();

Generates the following file:

Code: Select all

<?xml version="1.0" standalone="no"?>
<document>
    <info>
        <items>
            <foo x="1" />
            <foo x="2" />
            <foo x="3" />
        </items>
    </info>
</document>

Code: Select all

class XMLOutput {
public:
	XMLOutput(wxOutputStream& stream) : m_stream(stream), m_text(stream) {
		m_depth = 0;
		m_text.SetMode(wxEOL_UNIX);
		m_text << "<?xml version=\"1.0\" standalone=\"no\"?>\n";
	}
	~XMLOutput() { wxASSERT(m_depth == 0); }

	void OpenSection(const wxString& section) {
		m_sections.Add(section);
		Indent();
		m_text << "<" << section << ">\n";
		++m_depth;
	}
	void CloseSection() {
		wxString section = m_sections.Last();
		m_sections.RemoveAt(m_sections.GetCount() - 1);
		--m_depth;
		Indent();
		m_text << "</" << section << ">\n";
	}
	void WriteItem(const wxString& item) {
		Indent();
		m_text << item << '\n';
	}

private:
	wxOutputStream& m_stream;
	wxTextOutputStream m_text;
	int m_depth;
	wxArrayString m_sections;

	void Indent() {
		for (int i = 0; i < m_depth; ++i)
			m_text << "    ";
	}
};

[daddydave]

Fantastic!

[Jorg]

Very slick!
- Jorgen