FormatRestorer.h

#ifndef ROSE_FormatRestorer_H
#define ROSE_FormatRestorer_H
 
#include <iostream>
 
class FormatRestorer {
protected:
    std::ostream &stream;
    std::ios_base::fmtflags fmt;
 
public:
    FormatRestorer(std::ostream &o): stream(o) {
        save(o);
    }
 
    ~FormatRestorer() {
        restore();
    }
 
    void save(std::ostream &o) {
        fmt = o.flags();
    }
 
    void restore() {
        stream.flags(fmt);
    }
};
    
#endif