public:
explicit runtime_error_with_errno(const string& msg) throw()
: runtime_error(msg + string(": ") + strerror(errno)) {}
+ explicit runtime_error_with_errno(const string& msg, int e) throw()
+ : runtime_error(msg + string(": ") + strerror(e)) {}
};
// Utility functions
void assert_argument(char** argv, int argc, int index);
string itos(unsigned int value);
string mtos(mode_t mode);
-int unistd_gzopen(char* pathname, int flags, mode_t mode);
string trim_filename(const string& filename);
bool file_exists(const string& filename);
bool file_empty(const string& filename);