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xmltokenizer.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil c-basic-offset: 3 -*- */
// vim:cindent:ts=3:sw=3:et:tw=80:sta:
/*************************************************************** cppdom-cpr beg
 * 
 * cppdom was forked from the original xmlpp version 0.6 under the LGPL. This
 * new, branched xmlpp is under the same LGPL (of course) and is being
 * maintained by:
 *      Kevin Meinert   <subatomic@users.sourceforge.net>
 *      Allen Bierbaum  <allenb@users.sourceforge.net>
 *      Ben Scott       <nonchocoboy@users.sourceforge.net>
 *
 * -----------------------------------------------------------------
 *
 * xmlpp - an xml parser and validator written in C++
 * copyright (c) 2000-2001 Michael Fink
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * -----------------------------------------------------------------
 * File:          $RCSfile: xmltokenizer.h,v $
 * Date modified: $Date: 2003/01/03 02:37:47 $
 * Version:       $Revision: 1.12 $
 * -----------------------------------------------------------------
 *
 ************************************************************ cppdom-cpr-end */
// prevent multiple includes
#ifndef CPPDOM_XML_TOKENIZER_H
#define CPPDOM_XML_TOKENIZER_H

// needed includes
#include <string>
#include <stack>
#include <iosfwd>


// namespace declaration
namespace cppdom
{

   class XMLToken
   {
      friend class xmlstream_iterator;
   public:
      XMLToken();
      XMLToken(char ch);
      XMLToken(const std::string& str);

      bool isLiteral() const;

      bool isEndOfStream() const;

      char getLiteral() const;

      const std::string& getGeneric() const;

      // operators

      bool operator==(char ch) const;

      bool operator!=(char ch) const;

      bool operator==(const std::string& str) const;

      bool operator!=(const std::string& str) const;

      XMLToken& operator=(const std::string& str);

      XMLToken& operator=(char ch);

   protected:
      bool mIsLiteral;

      char mLiteral;

      std::string mGeneric;
   };



   class XMLTokenizer
   {
   public:
      XMLTokenizer(std::istream& in, XMLLocation& loc);
      virtual ~XMLTokenizer();

      XMLToken& operator*();

      const XMLToken* operator->();

      XMLTokenizer& operator++();

      XMLTokenizer& operator++(int);

      XMLToken& get();

      void putBack(XMLToken& token);

      void putBack();

   protected:
      virtual void getNext() = 0;

      // data members

      std::istream& mInput;

      XMLLocation& mLocation;

      XMLToken mCurToken;

      std::stack<XMLToken> mTokenStack;
   };

   class xmlstream_iterator : public XMLTokenizer
   {
   public:
      xmlstream_iterator(std::istream& in, XMLLocation& loc);

   protected:
      void getNext();

      // internally used to recognize chars in the stream
      bool isLiteral(char c);
      bool isWhiteSpace(char c);
      bool isNewLine(char c);
      bool isStringDelimiter(char c); // start-/endchar of a string

      bool mCdataMode;

      char mPutbackChar;
   };

   class xmldtd_iterator: public XMLTokenizer
   {
   public:
      xmldtd_iterator(std::istream& in, XMLLocation& loc);

   protected:
      void getNext(){}
   };
}

#endif

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