base/SimpleXMLSerializer

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/****************************************************************************
  Copyright (C)2002 David Jung <opensim@pobox.com>

  This program/file is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.
  
  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details. (http://www.gnu.org)
  
  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  
  $Id: SimpleXMLSerializer 1029 2004-02-11 20:45:54Z jungd $
  $Revision: 1.6 $
  $Date: 2004-02-11 15:45:54 -0500 (Wed, 11 Feb 2004) $
  $Author: jungd $
 
****************************************************************************/

#ifndef _BASE_SIMPLEXMLSERIALIZER_
#define _BASE_SIMPLEXMLSERIALIZER_

#include <base/base>
#include <base/array>
#include <base/Serializer>


namespace base {


class SimpleXMLSerializer : public Serializer
{
public:
  SimpleXMLSerializer(SerializerType type, ref<VFile> archive);
  SimpleXMLSerializer(SerializerType type, std::ios& stream);
  virtual ~SimpleXMLSerializer();

  virtual String className() const { return String("SimpleXMLSerializer"); }

  virtual bool followReferences(bool follow);
  virtual void flush(); ///< flush output stream (no-op on input).  Should use this before closing an output file before Serializer goes out-of-scope.

  virtual Serializer& hint(Int h);

protected:
  SimpleXMLSerializer(const SimpleXMLSerializer& a) 
    : Serializer(a), istream(a.istream), ostream(a.ostream), indent(indent) {}

  virtual Serializer& serialize(char& c, const String& memberName);
  virtual Serializer& serialize(Byte& b, const String& memberName);
  virtual Serializer& serialize(bool& b, const String& memberName);
  virtual Serializer& serialize(SInt& i, const String& memberName);
  virtual Serializer& serialize(Int& i, const String& memberName);
  virtual Serializer& serialize(LInt& i, const String& memberName);
  virtual Serializer& serialize(String& s, const String& memberName);
  virtual Serializer& serialize(Real& r, const String& memberName);

  virtual TypeModifier preSerializeObject(String& typeName, TypeModifier typeModifier, const String& memberName, bool forceTypeSerialization = false);
  virtual void         postSerializeObject(const String& memberName);

  virtual void serializeComment(const String& comment);

  
  struct TagData {
    String name;
    array<String> attributeNames;
    array<String> attributeValues;

    String attribute(const String& name)
    {
      for(Int i=0; i<attributeNames.size(); i++)
        if (attributeNames[i] == name)
          return attributeValues[i];
      return "";
    }
  };

  bool serializeHeader(const String& target);

  char nextChar()
  {
    char c;
    try {
      (*istream) >> c;
    } catch (std::exception& e) {
      abort(e.what());
    }
    return c;
  }

  char nextNWSChar() 
  {
    char c; 
    try {
      do {
        (*istream) >> c; 
      } while ((c==' ') || (c=='\n') || (c=='\011'));
    } catch (std::exception& e) {
      abort(e.what());
    }
    return c;
  }

  bool readStartTag(TagData& tag);
  bool readEndTag(const String& tagName);

  std::istream* istream;
  std::ostream* ostream;
  Int indent;
};

} // base

#endif

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