#ifndef XMLWRITER_H
#define XMLWRITER_H
///////////////////////////////////////////////////////////////////////
// XmlWriter.h - Create XML Strings                                  //
// ver 4                                                             //
// Language:    Visual C++, Visual Studio 2010, SP1                  //
// platform:    Toshiba Portege R705, Windows 7, Home Premium, SP1   //
// Application: Summer 2011 Projects                                 //
// Author:      Jim Fawcett, Syracuse University, CST 4-187          //
//              www.lcs.syr.edu/faculty/fawcett, (315) 443-3948      //
///////////////////////////////////////////////////////////////////////
/*
 * Package Operations:
 * ===================
 * This package contains a single class, XmlWriter.  It provides a
 * simple interface to build XML strings.  The package does not
 * support editing XML strings.  For that, you can write a graph
 * editor - fairly easy to do with the support of graph - reading 
 * the original from an XML file with XmlReader, modifying with the
 * editor, and saving using this XmlWriter.  You can also use the
 * XmlDocument package.
 *
 * XmlWriter does not keep track of the current XML element scope.
 * You have to do that.  Essentially when creating an element you
 * must build its body before closing.  You can do that by creating
 * a new instance of XmlWriter for the body part.  See the test
 * stub for an illustration of how to do that.
 *
 * XmlReader and XmlWriter supercede both XmlTran and XmlParser.
 *
 * Required Files:
 * ===============
 * XmlWriter.h, XmlWriter.cpp
 *
 * Build Process:
 * ==============
 * cl /Eha XmlWriter.cpp
 *
 * Maintenance History:
 * ====================
 * ver 4 : 11 Feb 13
 * - added tag stack so writer is tag scope aware
 * - added indenting option
 * ver 4 : 04 Jul 11
 * - added composite operations by returning XmlWriter& to 
 *   support chaining methods.  Also added element(tag,body).
 * ver 3 : 02 Jul 11
 * - made cosmetic changes to the manual page information
 * ver 2 : 27 Jun 11
 * - added verbose output to illustrate how XmlWriter works
 * ver 1 : 26 Jun 11
 * - first release
 */
#include <string>
#include <stack>

class XmlWriter
{
public:
  typedef std::pair<std::string,std::string> attribElem;
  XmlWriter();
  XmlWriter& start(const std::string& tag);
  XmlWriter& addBody(const std::string& body);
  XmlWriter& addAttribute(const std::string& name, const std::string& value);
  XmlWriter& end();
  XmlWriter& element(const std::string& tag, const std::string& body);
  XmlWriter& addDeclaration();
  XmlWriter& addComment(const std::string& comment);
  std::string xml();
  XmlWriter& clear();
  XmlWriter& indent(bool ind=true);
private:
  void indentIt();
  bool _indented;
  size_t _level;
  std::string _tag;
  std::string _xml;
  size_t position;
  std::stack<std::string> tagStack;
};

inline XmlWriter::XmlWriter() : _indented(false), _level(0) {}

inline std::string XmlWriter::xml() { return _xml; }

inline XmlWriter& XmlWriter::clear() 
{ 
  _xml = _tag = "";
  position = 0;
  return *this;
}

inline XmlWriter& XmlWriter::indent(bool ind) { _indented = ind; return *this; }

#endif