util-linux/scriptreplay.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * scriptreplay - play back typescripts, using timing information
   4  *
   5  * pascal.bellard@ads-lu.com
   6  *
   7  * Licensed under GPLv2 or later, see file License in this tarball for details.
   8  *
   9  */
  10 #include "libbb.h"
  11
  12 int scriptreplay_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
  13 int scriptreplay_main(int argc UNUSED_PARAM, char **argv)
  14 {
  15         const char *script = "typescript";
  16         double delay, factor = 1000000.0;
  17         int fd;
  18         unsigned long count;
  19         FILE *tfp;
  20
  21         if (argv[2]) {
  22                 script = argv[2];
  23                 if (argv[3])
  24                         factor /= atof(argv[3]);
  25         }
  26
  27         tfp = xfopen_for_read(argv[1]);
  28         fd = xopen(script, O_RDONLY);
  29         while (fscanf(tfp, "%lf %lu\n", &delay, &count) == 2) {
  30                 usleep(delay * factor);
  31                 bb_copyfd_exact_size(fd, STDOUT_FILENO, count);
  32         }
  33 #if ENABLE_FEATURE_CLEAN_UP
  34         close(fd);
  35         fclose(tfp);
  36 #endif
  37         return EXIT_SUCCESS;
  38 }