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****************************************************************************/

#ifndef XMLOUTPUT_H

#define XMLOUTPUT_H

#include <qtextstream.h>

#include <qstack.h>

QT_BEGIN_NAMESPACE

class XmlOutput

{

public:

    enum ConverstionType {

        NoConversion,       // No change

        EscapeConversion,   // Use '\"'

        XMLConversion       // Use "

    };

    enum XMLFormat {

        NoNewLine,          // No new lines, unless added manually

        NewLine             // All properties & tags indented on new lines

    };

    enum XMLState {

        Bare,               // Not in tag or attribute

        Tag,                // <tagname attribute1="value"

        Attribute           //  attribute2="value">

    };

    enum XMLType {

        tNothing,           // No XML output, and not state change

        tRaw,               // Raw text (no formating)

        tDeclaration,       // <?xml version="x.x" encoding="xxx"?>

        tTag,               // <tagname attribute1="value"

        tCloseTag,          // Closes an open tag

        tAttribute,         //  attribute2="value">

        tData,              // Tag data (formating done)

        tComment,           // <!-- Comment -->

        tCDATA              // <![CDATA[ ... ]]>

    };

    XmlOutput(QTextStream &file, ConverstionType type = XMLConversion);

    ~XmlOutput();

    // Settings

    void setIndentString(const QString &indentString);

    QString indentString();

    void setIndentLevel(int level);

    int indentLevel();

    void setState(XMLState state);

    XMLState state();

    struct xml_output {

        XMLType xo_type;    // Type of struct instance

        QString xo_text;    // Tag/Attribute name/xml version

        QString xo_value;   // Value of attributes/xml encoding

        xml_output(XMLType type, const QString &text, const QString &value)

            : xo_type(type), xo_text(text), xo_value(value) {}

        xml_output(const xml_output &xo)

            : xo_type(xo.xo_type), xo_text(xo.xo_text), xo_value(xo.xo_value) {}

    };

    // Streams

    XmlOutput& operator<<(const QString& o);

    XmlOutput& operator<<(const xml_output& o);

private:

    void increaseIndent();

    void decreaseIndent();

    void updateIndent();

    QString doConversion(const QString &text);

    // Output functions

    void newTag(const QString &tag);

    void newTagOpen(const QString &tag);

    void closeOpen();

    void closeTag();

    void closeTo(const QString &tag);

    void closeAll();

    void addDeclaration(const QString &version, const QString &encoding);

    void addRaw(const QString &rawText);

    void addAttribute(const QString &attribute, const QString &value);

    void addData(const QString &data);

    // Data

    QTextStream &xmlFile;

    QString indent;

    QString currentIndent;

    int currentLevel;

    XMLState currentState;

    XMLFormat format;

    ConverstionType conversion;

    QStack<QString> tagStack;

};

inline XmlOutput::xml_output noxml()

{

    return XmlOutput::xml_output(XmlOutput::tNothing, QString(), QString());

}

inline XmlOutput::xml_output raw(const QString &rawText)

{

    return XmlOutput::xml_output(XmlOutput::tRaw, rawText, QString());

}

inline XmlOutput::xml_output declaration(const QString &version = QString("1.0"),

                                         const QString &encoding = QString())

{

    return XmlOutput::xml_output(XmlOutput::tDeclaration, version, encoding);

}

inline XmlOutput::xml_output decl(const QString &version = QString("1.0"),

                                  const QString &encoding = QString())

{

    return declaration(version, encoding);

}

inline XmlOutput::xml_output tag(const QString &name)

{

    return XmlOutput::xml_output(XmlOutput::tTag, name, QString());

}

inline XmlOutput::xml_output closetag()

{

    return XmlOutput::xml_output(XmlOutput::tCloseTag, QString(), QString());

}

inline XmlOutput::xml_output closetag(const QString &toTag)

{

    return XmlOutput::xml_output(XmlOutput::tCloseTag, toTag, QString());

}

inline XmlOutput::xml_output closeall()

{

    return XmlOutput::xml_output(XmlOutput::tCloseTag, QString(), QString("all"));

}

inline XmlOutput::xml_output attribute(const QString &name,

                                       const QString &value)

{

    return XmlOutput::xml_output(XmlOutput::tAttribute, name, value);

}

inline XmlOutput::xml_output attr(const QString &name,

                                  const QString &value)

{

    return attribute(name, value);

}

inline XmlOutput::xml_output data(const QString &text = QString())

{

    return XmlOutput::xml_output(XmlOutput::tData, text, QString());

}

inline XmlOutput::xml_output comment(const QString &text)

{

    return XmlOutput::xml_output(XmlOutput::tComment, text, QString());

}

inline XmlOutput::xml_output cdata(const QString &text)

{

    return XmlOutput::xml_output(XmlOutput::tCDATA, text, QString());

}

QT_END_NAMESPACE

#endif // XMLOUTPUT_H