mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-11 10:33:33 +08:00
130 lines
2.9 KiB
C
130 lines
2.9 KiB
C
/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
#include <ansidecl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
|
|
int
|
|
DEFUN(main, (argc, argv), int argc AND char **argv)
|
|
{
|
|
static CONST char hello[] = "Hello, world.\n";
|
|
static CONST char replace[] = "Hewwo, world.\n";
|
|
static CONST size_t replace_from = 2, replace_to = 4;
|
|
char filename[FILENAME_MAX];
|
|
char *name = strrchr(*argv, '/');
|
|
char buf[BUFSIZ];
|
|
FILE *f;
|
|
int lose = 0;
|
|
|
|
if (name != NULL)
|
|
++name;
|
|
else
|
|
name = *argv;
|
|
|
|
(void) sprintf(filename, "/tmp/%s.test", name);
|
|
|
|
f = fopen(filename, "w+");
|
|
if (f == NULL)
|
|
{
|
|
perror(filename);
|
|
exit(1);
|
|
}
|
|
|
|
(void) fputs(hello, f);
|
|
rewind(f);
|
|
(void) fgets(buf, sizeof(buf), f);
|
|
rewind(f);
|
|
(void) fputs(buf, f);
|
|
rewind(f);
|
|
{
|
|
register size_t i;
|
|
for (i = 0; i < replace_from; ++i)
|
|
{
|
|
int c = getc(f);
|
|
if (c == EOF)
|
|
{
|
|
printf("EOF at %u.\n", i);
|
|
lose = 1;
|
|
break;
|
|
}
|
|
else if (c != hello[i])
|
|
{
|
|
printf("Got '%c' instead of '%c' at %u.\n",
|
|
(unsigned char) c, hello[i], i);
|
|
lose = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
{
|
|
long int where = ftell(f);
|
|
if (where == replace_from)
|
|
{
|
|
register size_t i;
|
|
for (i = replace_from; i < replace_to; ++i)
|
|
if (putc(replace[i], f) == EOF)
|
|
{
|
|
printf("putc('%c') got %s at %u.\n",
|
|
replace[i], strerror(errno), i);
|
|
lose = 1;
|
|
break;
|
|
}
|
|
}
|
|
else if (where == -1L)
|
|
{
|
|
printf("ftell got %s (should be at %u).\n",
|
|
strerror(errno), replace_from);
|
|
lose = 1;
|
|
}
|
|
else
|
|
{
|
|
printf("ftell returns %u; should be %u.\n", where, replace_from);
|
|
lose = 1;
|
|
}
|
|
}
|
|
|
|
if (!lose)
|
|
{
|
|
rewind(f);
|
|
if (fgets(buf, sizeof(buf), f) == NULL)
|
|
{
|
|
printf("fgets got %s.\n", strerror(errno));
|
|
lose = 1;
|
|
}
|
|
else if (strcmp(buf, replace))
|
|
{
|
|
printf("Read \"%s\" instead of \"%s\".\n", buf, replace);
|
|
lose = 1;
|
|
}
|
|
}
|
|
|
|
if (lose)
|
|
printf("Test FAILED! Losing file is \"%s\".\n", filename);
|
|
else
|
|
{
|
|
(void) remove(filename);
|
|
puts("Test succeeded.");
|
|
}
|
|
|
|
exit(lose ? EXIT_FAILURE : EXIT_SUCCESS);
|
|
}
|