Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

235 lines (201 sloc) 5.412 kb
/*
* Copyright (C) 2008, Karel Zak <kzak@redhat.com>
* Copyright (C) 2008, James Youngman <jay@gnu.org>
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This file is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*
* Based on scriptreplay.pl by Joey Hess <joey@kitenet.net>
*/
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include <limits.h>
#include <math.h>
#include <sys/select.h>
#include <unistd.h>
#include <getopt.h>
#include "closestream.h"
#include "nls.h"
#include "c.h"
#define SCRIPT_MIN_DELAY 0.0001 /* from original sripreplay.pl */
static void __attribute__((__noreturn__))
usage(FILE *out)
{
fputs(_("\nUsage:\n"), out);
fprintf(out,
_(" %s [-t] timingfile [typescript] [divisor]\n"),
program_invocation_short_name);
fputs(_("\nOptions:\n"), out);
fputs(_(" -t, --timing <file> script timing output file\n"
" -s, --typescript <file> script terminal session output file\n"
" -d, --divisor <num> speed up or slow down execution with time divisor\n"
" -V, --version output version information and exit\n"
" -h, --help display this help and exit\n\n"), out);
exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
}
static double
getnum(const char *s)
{
double d;
char *end;
errno = 0;
d = strtod(s, &end);
if (end && *end != '\0')
errx(EXIT_FAILURE, _("expected a number, but got '%s'"), s);
if ((d == HUGE_VAL || d == -HUGE_VAL) && ERANGE == errno)
err(EXIT_FAILURE, _("divisor '%s'"), s);
if (!(d==d)) { /* did they specify "nan"? */
errno = EINVAL;
err(EXIT_FAILURE, _("divisor '%s'"), s);
}
return d;
}
static void
delay_for(double delay)
{
#ifdef HAVE_NANOSLEEP
struct timespec ts, remainder;
ts.tv_sec = (time_t) delay;
ts.tv_nsec = (delay - ts.tv_sec) * 1.0e9;
while (-1 == nanosleep(&ts, &remainder)) {
if (EINTR == errno)
ts = remainder;
else
break;
}
#else
struct timeval tv;
tv.tv_sec = (long) delay;
tv.tv_usec = (delay - tv.tv_sec) * 1.0e6;
select(0, NULL, NULL, NULL, &tv);
#endif
}
static void
emit(FILE *fd, const char *filename, size_t ct)
{
char buf[BUFSIZ];
while(ct) {
size_t len, cc;
cc = ct > sizeof(buf) ? sizeof(buf) : ct;
len = fread(buf, 1, cc, fd);
if (!len)
break;
ct -= len;
cc = write(STDOUT_FILENO, buf, len);
if (cc != len)
err(EXIT_FAILURE, _("write to stdout failed"));
}
if (!ct)
return;
if (feof(fd))
errx(EXIT_FAILURE, _("unexpected end of file on %s"), filename);
err(EXIT_FAILURE, _("failed to read typescript file %s"), filename);
}
int
main(int argc, char *argv[])
{
FILE *tfile, *sfile;
const char *sname = NULL, *tname = NULL;
double divi = 1;
int c, diviopt = FALSE, idx;
unsigned long line;
size_t oldblk = 0;
char ch;
static const struct option longopts[] = {
{ "timing", required_argument, 0, 't' },
{ "typescript", required_argument, 0, 's' },
{ "divisor", required_argument, 0, 'd' },
{ "version", no_argument, 0, 'V' },
{ "help", no_argument, 0, 'h' },
{ NULL, 0, 0, 0 }
};
/* Because we use space as a separator, we can't afford to use any
* locale which tolerates a space in a number. In any case, script.c
* sets the LC_NUMERIC locale to C, anyway.
*/
setlocale(LC_ALL, "");
setlocale(LC_NUMERIC, "C");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
atexit(close_stdout);
while ((ch = getopt_long(argc, argv, "t:s:d:Vh", longopts, NULL)) != -1)
switch(ch) {
case 't':
tname = optarg;
break;
case 's':
sname = optarg;
break;
case 'd':
diviopt = TRUE;
divi = getnum(optarg);
break;
case 'V':
printf(_("%s from %s\n"), program_invocation_short_name,
PACKAGE_STRING);
exit(EXIT_SUCCESS);
case 'h':
usage(stdout);
default:
usage(stderr);
}
argc -= optind;
argv += optind;
idx = 0;
if ((argc < 1 && !tname) || argc > 3) {
warnx(_("wrong number of arguments"));
usage(stderr);
}
if (!tname)
tname = argv[idx++];
if (!sname)
sname = idx < argc ? argv[idx++] : "typescript";
if (!diviopt)
divi = idx < argc ? getnum(argv[idx]) : 1;
tfile = fopen(tname, "r");
if (!tfile)
err(EXIT_FAILURE, _("cannot open %s"), tname);
sfile = fopen(sname, "r");
if (!sfile)
err(EXIT_FAILURE, _("cannot open %s"), sname);
/* ignore the first typescript line */
while((c = fgetc(sfile)) != EOF && c != '\n');
for(line = 0; ; line++) {
double delay;
size_t blk;
char nl;
if (fscanf(tfile, "%lf %zu%c\n", &delay, &blk, &nl) != 3 ||
nl != '\n') {
if (feof(tfile))
break;
if (ferror(tfile))
err(EXIT_FAILURE,
_("failed to read timing file %s"), tname);
errx(EXIT_FAILURE,
_("timings file %s: %lu: unexpected format"),
tname, line);
}
delay /= divi;
if (delay > SCRIPT_MIN_DELAY)
delay_for(delay);
if (oldblk)
emit(sfile, sname, oldblk);
oldblk = blk;
}
fclose(sfile);
fclose(tfile);
printf("\n");
exit(EXIT_SUCCESS);
}
Jump to Line
Something went wrong with that request. Please try again.