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- #include <stdio.h>
-
- /* 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;
- }
- }
-
- main ()
- {
- int fd = open ("testfile", 0);
-
- if (fd < 0)
- {
- perror ("opening `testfile'");
- 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 `testfile' 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");
- exit (2);
- }
- close (fd);
- #ifdef VMS
- exit (1); /* On VMS, success is 1. */
- #else
- exit (0);
- #endif
- }
-