notes.h

#ifndef WREPORT_NOTES_H
#define WREPORT_NOTES_H
 
#include <iosfwd>
 
#ifndef WREPORT_PRINTF_ATTRS
#define WREPORT_PRINTF_ATTRS(a, b) __attribute__ ((format(printf, a, b)))
#endif
 
namespace wreport {
 
namespace notes {
 
void set_target(std::ostream& out);
 
std::ostream* get_target();
 
bool logs() throw ();
 
std::ostream& log() throw ();
 
void logf(const char* fmt, ...) WREPORT_PRINTF_ATTRS(1, 2);
 
struct Collect
{
    std::ostream* old;
 
    Collect(std::ostream& out)
    {
        old = get_target();
        set_target(out);
    }
    ~Collect()
    {
        set_target(*old);
    }
};
 
}
}
 
#endif