mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-27 07:37:33 +00:00
108 lines
2.6 KiB
C
108 lines
2.6 KiB
C
/* test-distrib.c --- testing distribution of nonprinting chars
|
|
|
|
Copyright (C) 1987, 1993, 1994, 1995, 1999, 2001
|
|
Free Software Foundation Inc.
|
|
|
|
This file is part of GNU Emacs.
|
|
|
|
GNU Emacs 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, or (at your option)
|
|
any later version.
|
|
|
|
GNU Emacs 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.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GNU Emacs; see the file COPYING. If not, write to the
|
|
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <config.h>
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
|
|
#ifdef HAVE_FCNTL_H
|
|
#include <fcntl.h>
|
|
#endif
|
|
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#ifndef O_RDONLY
|
|
#define O_RDONLY 0
|
|
#endif
|
|
|
|
/* Break string in two parts to avoid buggy C compilers that ignore characters
|
|
after nulls in strings. */
|
|
|
|
char string1[] = "Testing distribution of nonprinting chars:\n\
|
|
Should be 0177: \177 Should be 0377: \377 Should be 0212: \212.\n\
|
|
Should be 0000: ";
|
|
|
|
char string2[] = ".\n\
|
|
This file is read by the `test-distribution' program.\n\
|
|
If you change it, you will make that program fail.\n";
|
|
|
|
char buf[300];
|
|
|
|
/* Like `read' but keeps trying until it gets SIZE bytes or reaches eof. */
|
|
int
|
|
cool_read (fd, buf, size)
|
|
int fd;
|
|
char *buf;
|
|
int size;
|
|
{
|
|
int num, sofar = 0;
|
|
|
|
while (1)
|
|
{
|
|
if ((num = read (fd, buf + sofar, size - sofar)) == 0)
|
|
return sofar;
|
|
else if (num < 0)
|
|
return num;
|
|
sofar += num;
|
|
}
|
|
}
|
|
|
|
int
|
|
main (argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
int fd;
|
|
|
|
if (argc != 2)
|
|
{
|
|
fprintf (stderr, "Usage: %s testfile\n", argv[0]);
|
|
exit (2);
|
|
}
|
|
fd = open (argv[1], O_RDONLY);
|
|
if (fd < 0)
|
|
{
|
|
perror (argv[1]);
|
|
exit (2);
|
|
}
|
|
if (cool_read (fd, buf, sizeof string1) != sizeof string1 ||
|
|
strcmp (buf, string1) ||
|
|
cool_read (fd, buf, sizeof string2) != sizeof string2 - 1 ||
|
|
strncmp (buf, string2, sizeof string2 - 1))
|
|
{
|
|
fprintf (stderr, "Data in file `%s' has been damaged.\n\
|
|
Most likely this means that many nonprinting characters\n\
|
|
have been corrupted in the files of Emacs, and it will not work.\n",
|
|
argv[1]);
|
|
exit (2);
|
|
}
|
|
close (fd);
|
|
#ifdef VMS
|
|
exit (1); /* On VMS, success is 1. */
|
|
#endif
|
|
return (0);
|
|
}
|