| 1 | /* test-distrib.c --- testing distribution of nonprinting chars |
| 2 | |
| 3 | Copyright (C) 1987, 1993, 1994, 1995, 1999, 2001, 2002, 2003, 2004, 2005, |
| 4 | 2006, 2007, 2008 Free Software Foundation, Inc. |
| 5 | |
| 6 | This file is part of GNU Emacs. |
| 7 | |
| 8 | GNU Emacs is free software: you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation, either version 3 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | GNU Emacs is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 20 | |
| 21 | |
| 22 | #ifdef HAVE_CONFIG_H |
| 23 | #include <config.h> |
| 24 | #endif |
| 25 | |
| 26 | #include <stdio.h> |
| 27 | |
| 28 | #ifdef HAVE_FCNTL_H |
| 29 | #include <fcntl.h> |
| 30 | #endif |
| 31 | |
| 32 | #ifdef HAVE_UNISTD_H |
| 33 | #include <unistd.h> |
| 34 | #endif |
| 35 | |
| 36 | #ifndef O_RDONLY |
| 37 | #define O_RDONLY 0 |
| 38 | #endif |
| 39 | |
| 40 | /* Break string in two parts to avoid buggy C compilers that ignore characters |
| 41 | after nulls in strings. */ |
| 42 | |
| 43 | char string1[] = "Testing distribution of nonprinting chars:\n\ |
| 44 | Should be 0177: \177 Should be 0377: \377 Should be 0212: \212.\n\ |
| 45 | Should be 0000: "; |
| 46 | |
| 47 | char string2[] = ".\n\ |
| 48 | This file is read by the `test-distribution' program.\n\ |
| 49 | If you change it, you will make that program fail.\n"; |
| 50 | |
| 51 | char buf[300]; |
| 52 | |
| 53 | /* Like `read' but keeps trying until it gets SIZE bytes or reaches eof. */ |
| 54 | int |
| 55 | cool_read (fd, buf, size) |
| 56 | int fd; |
| 57 | char *buf; |
| 58 | int size; |
| 59 | { |
| 60 | int num, sofar = 0; |
| 61 | |
| 62 | while (1) |
| 63 | { |
| 64 | if ((num = read (fd, buf + sofar, size - sofar)) == 0) |
| 65 | return sofar; |
| 66 | else if (num < 0) |
| 67 | return num; |
| 68 | sofar += num; |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | int |
| 73 | main (argc, argv) |
| 74 | int argc; |
| 75 | char **argv; |
| 76 | { |
| 77 | int fd; |
| 78 | |
| 79 | if (argc != 2) |
| 80 | { |
| 81 | fprintf (stderr, "Usage: %s testfile\n", argv[0]); |
| 82 | exit (EXIT_FAILURE); |
| 83 | } |
| 84 | fd = open (argv[1], O_RDONLY); |
| 85 | if (fd < 0) |
| 86 | { |
| 87 | perror (argv[1]); |
| 88 | exit (EXIT_FAILURE); |
| 89 | } |
| 90 | if (cool_read (fd, buf, sizeof string1) != sizeof string1 || |
| 91 | strcmp (buf, string1) || |
| 92 | cool_read (fd, buf, sizeof string2) != sizeof string2 - 1 || |
| 93 | strncmp (buf, string2, sizeof string2 - 1)) |
| 94 | { |
| 95 | fprintf (stderr, "Data in file `%s' has been damaged.\n\ |
| 96 | Most likely this means that many nonprinting characters\n\ |
| 97 | have been corrupted in the files of Emacs, and it will not work.\n", |
| 98 | argv[1]); |
| 99 | exit (EXIT_FAILURE); |
| 100 | } |
| 101 | close (fd); |
| 102 | return EXIT_SUCCESS; |
| 103 | } |
| 104 | |
| 105 | /* arch-tag: 3a89005d-df98-4c32-aa9f-33570e16a26a |
| 106 | (do not change this comment) */ |
| 107 | |
| 108 | /* test-distrib.c ends here */ |