1  ///////////////////////////////////////////////////////////////////////////////
       2  //
       3  /// \file       tuklib_exit.c
       4  /// \brief      Close stdout and stderr, and exit
       5  //
       6  //  Author:     Lasse Collin
       7  //
       8  //  This file has been put into the public domain.
       9  //  You can do whatever you want with this file.
      10  //
      11  ///////////////////////////////////////////////////////////////////////////////
      12  
      13  #include "tuklib_common.h"
      14  
      15  #include <stdlib.h>
      16  #include <stdio.h>
      17  #include <string.h>
      18  
      19  #include "tuklib_gettext.h"
      20  #include "tuklib_progname.h"
      21  #include "tuklib_exit.h"
      22  
      23  
      24  extern void
      25  tuklib_exit(int status, int err_status, int show_error)
      26  {
      27  	if (status != err_status) {
      28  		// Close stdout. If something goes wrong,
      29  		// print an error message to stderr.
      30  		const int ferror_err = ferror(stdout);
      31  		const int fclose_err = fclose(stdout);
      32  		if (ferror_err || fclose_err) {
      33  			status = err_status;
      34  
      35  			// If it was fclose() that failed, we have the reason
      36  			// in errno. If only ferror() indicated an error,
      37  			// we have no idea what the reason was.
      38  			if (show_error)
      39  				fprintf(stderr, "%s: %s: %s\n", progname,
      40  						_("Writing to standard "
      41  							"output failed"),
      42  						fclose_err ? strerror(errno)
      43  							: _("Unknown error"));
      44  		}
      45  	}
      46  
      47  	if (status != err_status) {
      48  		// Close stderr. If something goes wrong, there's
      49  		// nothing where we could print an error message.
      50  		// Just set the exit status.
      51  		const int ferror_err = ferror(stderr);
      52  		const int fclose_err = fclose(stderr);
      53  		if (fclose_err || ferror_err)
      54  			status = err_status;
      55  	}
      56  
      57  	exit(status);
      58  }