/*  MeCab -- Yet Another Part-of-Speech and Morphological Analyzer  $Id: stream_wrapper.h 1528 2006-08-07 02:39:50Z taku $;  Copyright(C) 2001-2005 Taku Kudo <taku@chasen.org>  Copyright(C) 2004-2005 Nippon Telegraph and Telephone Corporation  This is free software with ABSOLUTELY NO WARRANTY.  This library is free software; you can redistribute it and/or  modify it under the terms of the GNU Lesser General Public  License as published by the Free Software Foundation; either  version 2.1 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  Lesser General Public License for more details.  You should have received a copy of the GNU Lesser 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*/#ifndef _CRFPP_STREAM_WRAPPER_H#define _CRFPP_STREAM_WRAPPER_H#include <iostream>#include <fstream>#include <cstring>namespace CRFPP {  class istream_wrapper {  private:    std::istream* is;  public:    std::istream &operator*() const  { return *is; }    std::istream *operator->() const { return is;  }    istream_wrapper(const char* filename): is(0) {      if (std::strcmp(filename, "-") == 0)        is = &std::cin;      else        is = new std::ifstream(filename);    }    ~istream_wrapper() {      if (is != &std::cin) delete is;    }  };  class ostream_wrapper {  private:    std::ostream* os;  public:    std::ostream &operator*() const  { return *os; }    std::ostream *operator->() const { return os;  }    ostream_wrapper(const char* filename): os(0) {      if (std::strcmp(filename, "-") == 0)        os = &std::cout;      else        os = new std::ofstream(filename);    }    ~ostream_wrapper() {      if (os != &std::cout) delete os;    }  };}#endif