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//
// Zinnia: Online hand recognition system with machine learning
//
// $Id: stream_wrapper.h 17 2009-04-05 11:40:32Z taku-ku $;
//
// Copyright(C) 2008 Taku Kudo <taku@chasen.org>
//
//
// CRF++ -- Yet Another CRF toolkit
//
// $Id: stream_wrapper.h 17 2009-04-05 11:40:32Z taku-ku $;
//
// Copyright(C) 2005-2007 Taku Kudo <taku@chasen.org>
//
#ifndef zinnia_STREAM_WRAPPER_H_
#define zinnia_STREAM_WRAPPER_H_
#include <iostream>
#include <fstream>
#include <cstring>
namespace zinnia {
class istream_wrapper {
private:
std::istream* is;
public:
std::istream &operator*() const { return *is; }
std::istream *operator->() const { return is; }
std::istream *get() { return is; }
explicit 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; }
std::ostream *get() { return os; }
explicit 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
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