oprofile: stream_util.h Source File

00001 /**
00002  * @file stream_util.h
00003  * C++ stream utility
00004  *
00005  * @remark Copyright 2003 OProfile authors
00006  * @remark Read the file COPYING
00007  *
00008  * @author Philippe Elie
00009  * @author John Levon
00010  */
00011 
00012 #ifndef STREAM_UTIL_H
00013 #define STREAM_UTIL_H
00014 
00015 #include <iostream>
00016 
00017 /// class which save a stream state and restore it at dtor time
00018 class io_state {
00019 public:
00020         /**
00021          * save the stream flags, precision and fill char.
00022          *
00023          * width is restored at end of expression, there is no need to save it.
00024          * tie and locale are not saved currently
00025          *
00026          * error state shouldn't be saved.
00027          */
00028         io_state(std::ios & stream);
00029         /// restore the stream state
00030         ~io_state();
00031 private:
00032         std::ios & stream;
00033 
00034         std::ios::fmtflags format;
00035         std::streamsize precision;
00036         char fill;
00037 };
00038 
00039 #endif /* !STREAM_UTIL_H */