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sqlstring.h

/*
Copyright 2009 Sun Microsystems, Inc.  All rights reserved.

The MySQL Connector/C++ is licensed under the terms of the GPL
<http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most
MySQL Connectors. There are special exceptions to the terms and
conditions of the GPL as it is applied to this software, see the
FLOSS License Exception
<http://www.mysql.com/about/legal/licensing/foss-exception.html>.
*/

#ifndef _SQL_STRING_H_
#define _SQL_STRING_H_

#include <string>
#include "build_config.h"
#include <iostream>

namespace sql
{
      class CPPCONN_PUBLIC_FUNC SQLString
      {
            std::string realStr;

      public:
#ifdef _WIN32
        //TODO something less dirty-hackish.
        static const size_t npos = static_cast<std::string::size_type>(-1);
#else
            static const size_t npos = std::string::npos;
#endif
      
            ~SQLString() {}

            SQLString() {}

            SQLString(const SQLString & other) : realStr(other.realStr) {}

            SQLString(const std::string & other) : realStr(other) {}

            SQLString(const char other[]) : realStr(other) {}

            SQLString(const char * s, size_t n) : realStr(s, n) {}

            // Needed for stuff like SQLString str= "char * string constant"
            const SQLString & operator=(const char * s)
            {
                  realStr = s;
                  return *this;
            }

            const SQLString & operator=(const std::string & rhs)
            {
                  realStr = rhs;
                  return *this;
            }

            const SQLString & operator=(const SQLString & rhs)
            {
                  realStr = rhs.realStr;
                  return *this;
            }

            // Conversion to st::string. Comes in play for stuff like std::string str= SQLString_var;
            operator std::string const&() const
            {
                  return realStr;
            }

            /** For access std::string methods. Not sure we need it. Makes it look like some smart ptr.
                  possibly operator* - will look even more like smart ptr */
            std::string * operator ->()
            {
                  return & realStr;
            }

            int compare(const SQLString& str) const
            {
                  return realStr.compare(str.realStr);
            }

            int compare(const char * s) const
            {
                  return realStr.compare(s);    
            }

            int compare(size_t pos1, size_t n1, const char * s) const
            {
                  return realStr.compare(pos1, n1, s);
            }

            const std::string & asStdString() const
            {
                  return realStr;
            }

            const char * c_str() const
            {
                  return realStr.c_str();
            }

            size_t length() const
            {
                  return realStr.length();            
            }

            SQLString & append(const std::string & str)
            {
                  realStr.append(str);
                  return *this;
            }

            SQLString & append(const char * s)
            {
                  realStr.append(s);
                  return *this;
            }

            const char& operator[](size_t pos) const
            {
                  return realStr[pos];
            }

            size_t find(char c, size_t pos = 0) const
            {
                  return realStr.find(c, pos);
            }

            size_t find(const SQLString & s, size_t pos = 0) const
            {
                  return realStr.find(s.realStr, pos);
            }

            SQLString substr(size_t pos = 0, size_t n = npos) const
            {
                  return realStr.substr(pos, n);
            }

            const SQLString& replace(size_t pos1, size_t n1, const SQLString & s)
            {
                  realStr.replace(pos1, n1, s.realStr);
                  return *this;
            }

            size_t find_first_of(char c, size_t pos = 0) const
            {
                  return realStr.find_first_of(c, pos);
            }

            size_t find_last_of(char c, size_t pos = npos) const
            {
                  return realStr.find_last_of(c, pos);
            }

            const SQLString & operator+=(const SQLString & op2)
            {
                  realStr += op2.realStr;
                  return *this;
            }
};


/*
  Operators that can and have to be not a member.
*/
inline const SQLString operator+(const SQLString & op1, const SQLString & op2)
{
      return sql::SQLString(op1.asStdString() + op2.asStdString());
}

inline bool operator ==(const SQLString & op1, const SQLString & op2)
{
      return (op1.asStdString() == op2.asStdString());
}

inline bool operator !=(const SQLString & op1, const SQLString & op2)
{
      return (op1.asStdString() != op2.asStdString());
}

inline bool operator <(const SQLString & op1, const SQLString & op2)
{
      return op1.asStdString() < op2.asStdString();
} 


}// namespace sql


namespace std
{
      // operator << for SQLString output
      inline ostream & operator << (ostream & os, const sql::SQLString & str )
      {
            return os << str.asStdString();
      }
}
#endif

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