release/src-rt-6.x.4708/tools/misc/xz/debug/repeat.c

   1 ///////////////////////////////////////////////////////////////////////////////
   2 //
   3 /// \file       repeat.c
   4 /// \brief      Repeats given string given times
   5 ///
   6 /// This program can be useful when debugging run-length encoder in
   7 /// the Subblock filter, especially the condition when repeat count
   8 /// doesn't fit into 28-bit integer.
   9 //
  10 //  Author:     Lasse Collin
  11 //
  12 //  This file has been put into the public domain.
  13 //  You can do whatever you want with this file.
  14 //
  15 ///////////////////////////////////////////////////////////////////////////////
  16
  17 #include "sysdefs.h"
  18 #include <stdio.h>
  19
  20
  21 int
  22 main(int argc, char **argv)
  23 {
  24         if (argc != 3) {
  25                 fprintf(stderr, "Usage: %s COUNT STRING\n", argv[0]);
  26                 exit(1);
  27         }
  28
  29         unsigned long long count = strtoull(argv[1], NULL, 10);
  30         const size_t size = strlen(argv[2]);
  31
  32         while (count-- != 0)
  33                 fwrite(argv[2], 1, size, stdout);
  34
  35         return !!(ferror(stdout) || fclose(stdout));
  36 }