hush/util-linux/scriptreplay.c
Denys Vlasenko 997538ab58 scriptreplay: show help text if run with no arguments
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2009-07-19 23:11:45 +02:00

42 lines
886 B
C

/* vi: set sw=4 ts=4: */
/*
* scriptreplay - play back typescripts, using timing information
*
* pascal.bellard@ads-lu.com
*
* Licensed under GPLv2 or later, see file License in this tarball for details.
*
*/
#include "libbb.h"
int scriptreplay_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int scriptreplay_main(int argc UNUSED_PARAM, char **argv)
{
const char *script = "typescript";
double delay, factor = 1000000.0;
int fd;
unsigned long count;
FILE *tfp;
if (!argv[1])
bb_show_usage();
if (argv[2]) {
script = argv[2];
if (argv[3])
factor /= atof(argv[3]);
}
tfp = xfopen_for_read(argv[1]);
fd = xopen(script, O_RDONLY);
while (fscanf(tfp, "%lf %lu\n", &delay, &count) == 2) {
usleep(delay * factor);
bb_copyfd_exact_size(fd, STDOUT_FILENO, count);
}
if (ENABLE_FEATURE_CLEAN_UP) {
close(fd);
fclose(tfp);
}
return EXIT_SUCCESS;
}