/usr/include/dune/common/ios_state.hh is in libdune-common-dev 2.5.1-1.
This file is owned by root:root, with mode 0o644.
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#ifndef DUNE_COMMON_IOS_STATE_HH
#define DUNE_COMMON_IOS_STATE_HH
#include <ios>
namespace Dune {
/** @addtogroup Common
*
* @{
*/
/**
* @file
* @brief Utility class for storing and resetting stream attributes.
* @author Markus Blatt
*/
/**
* @brief Utility class for storing and resetting stream attributes.
*
* The constructor saves the attributes currently set in the ios_base
* object and the destructor restores these attributes again. The
* attributes can also be restores at any time by calling the method
* restore().
*
* The saved attributes are the format flags, precision, and width.
*
* @note The interface of this class is meant to be drop-in compatible the
* the class of the same name from <boost/io/ios_state.hpp>.
*/
class ios_base_all_saver
{
public:
/** @brief Export type of object we save the state for */
typedef std::ios_base state_type;
/**
* @brief Constructor that stores the currently used flags.
* @param ios_ The ios_base object whose flags are to be saved and
* restored. Any stream object should work here.
*
* @note A reference to the ios_base object is store in this object. Thus
* the ios_base object must remain valid until the destructor of
* this object has been called.
*/
ios_base_all_saver(state_type& ios_);
/**
* @brief Destructor that restores the flags stored by the constructor.
*/
~ios_base_all_saver();
/**
* @brief Restore flags now
*
* The flags will also be restored at destruction time even if this method
* was used.
*/
void restore();
private:
/** @brief the ios object to restore the flags to. */
state_type& ios;
/** @brief The flags used when the constructor was called. */
state_type::fmtflags oldflags;
/** @brief The precision in use when the constructor was called. */
std::streamsize oldprec;
/** @brief The width in use when the constructor was called. */
std::streamsize oldwidth;
};
/** }@ */
}
#endif // DUNE_COMMON_IOS_STATE_HH
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