src/nobug_rbdump.c

   1 /*
   2  This file is part of the NoBug debugging library.
   3
   4  Copyright (C) 2008,    Simeon Voelkel <simeon_voelkel@arcor.de>
   5
   6  This program is free software; you can redistribute it and/or modify
   7  it under the terms of the GNU General Public License as published by
   8  the Free Software Foundation; either version 2 of the License, or
   9  (at your option) any later version.
  10
  11  This program is distributed in the hope that it will be useful,
  12  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  GNU General Public License for more details.
  15
  16  You should have received a copy of the GNU General Public License
  17  along with this program; if not, contact Christian Thaeter <ct@pipapo.org>.
  18 */
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22 #include <sys/types.h>
  23 #include <sys/stat.h>
  24 #include <unistd.h>
  25
  26
  27 #define NOBUG_LIBNOBUG_C
  28 #include "nobug.h"
  29
  30 /*
  31 //rbdump HEAD~ Dumping Persistent Ringbuffers; rbdump; dumping persistent ringbuffers
  32 //rbdump
  33 //rbdump NoBug installs the `nobug_rbdump` tool for dumping the content of a persistent
  34 //rbdump ringbuffer. It is invoked with the filename of the ringbuffer, the content is then
  35 //rbdump printed to stdout.
  36 //rbdump
  37 */
  38 int
  39 main(int argc, char* argv[])
  40 {
  41   struct stat filestat;
  42
  43   if (argc < 2)
  44     {
  45       printf( "usage: %s file\n\n"
  46               "  nobug ringbuffer dump\n\n"
  47               "  Copyright (C)\n"
  48               "    2008,               Simeon Voelkel <simeon_voelkel@arcor.de>\n\n"
  49               "  This is free software.  You may redistribute copies of it under the terms of\n"
  50               "  the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.\n"
  51               "  There is NO WARRANTY, to the extent permitted by law.\n\n",
  52               argv[0]
  53               );
  54       return 1;
  55     }
  56   if (argv[1] != NULL)
  57     {
  58       if (stat(argv[1], &filestat))
  59         {
  60           fprintf (stderr, "Can't stat file %s\n", argv[1]);
  61           return 2;
  62         }
  63
  64       struct nobug_ringbuffer rb;
  65
  66       if (!nobug_ringbuffer_init (&rb, filestat.st_size, argv[1], NOBUG_RINGBUFFER_KEEP|NOBUG_RINGBUFFER_APPEND))
  67         {
  68           fprintf (stderr, "Error opening ringbuffer %s\n", argv[1]);
  69           return 3;
  70         }
  71
  72       nobug_ringbuffer_save (&rb, stdout);
  73     }
  74
  75   return 0;
  76 }