Commit | Line | Data |
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b3ae7a0a GM |
1 | /* test-distrib.c --- testing distribution of nonprinting chars |
2 | ||
294981c7 | 3 | Copyright (C) 1987, 1993, 1994, 1995, 1999, 2001, 2002, 2003, 2004, 2005, |
f5d0ac07 | 4 | 2006, 2007, 2008, 2009 Free Software Foundation, Inc. |
b3ae7a0a | 5 | |
294981c7 | 6 | This file is part of GNU Emacs. |
b3ae7a0a | 7 | |
294981c7 GM |
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. | |
b3ae7a0a | 12 | |
294981c7 GM |
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/>. */ | |
b3ae7a0a | 20 | |
b3ae7a0a | 21 | |
33b78bd6 RM |
22 | #ifdef HAVE_CONFIG_H |
23 | #include <config.h> | |
24 | #endif | |
25 | ||
042c85b8 JB |
26 | #include <stdio.h> |
27 | ||
af5cae05 | 28 | #ifdef HAVE_FCNTL_H |
f0e8db05 DL |
29 | #include <fcntl.h> |
30 | #endif | |
31 | ||
9ee8cf9e AS |
32 | #ifdef HAVE_UNISTD_H |
33 | #include <unistd.h> | |
34 | #endif | |
35 | ||
33b78bd6 RM |
36 | #ifndef O_RDONLY |
37 | #define O_RDONLY 0 | |
38 | #endif | |
39 | ||
042c85b8 JB |
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]; | |
80b2cbf2 | 52 | |
042c85b8 JB |
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 | ||
340ff9de | 72 | int |
d2d92f7a JB |
73 | main (argc, argv) |
74 | int argc; | |
75 | char **argv; | |
042c85b8 | 76 | { |
d2d92f7a | 77 | int fd; |
042c85b8 | 78 | |
d2d92f7a JB |
79 | if (argc != 2) |
80 | { | |
81 | fprintf (stderr, "Usage: %s testfile\n", argv[0]); | |
80e26b66 | 82 | exit (EXIT_FAILURE); |
d2d92f7a | 83 | } |
33b78bd6 | 84 | fd = open (argv[1], O_RDONLY); |
042c85b8 JB |
85 | if (fd < 0) |
86 | { | |
d2d92f7a | 87 | perror (argv[1]); |
80e26b66 | 88 | exit (EXIT_FAILURE); |
042c85b8 JB |
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 | { | |
d2d92f7a | 95 | fprintf (stderr, "Data in file `%s' has been damaged.\n\ |
042c85b8 | 96 | Most likely this means that many nonprinting characters\n\ |
d2d92f7a JB |
97 | have been corrupted in the files of Emacs, and it will not work.\n", |
98 | argv[1]); | |
80e26b66 | 99 | exit (EXIT_FAILURE); |
042c85b8 JB |
100 | } |
101 | close (fd); | |
65396510 | 102 | return EXIT_SUCCESS; |
042c85b8 | 103 | } |
ab5796a9 MB |
104 | |
105 | /* arch-tag: 3a89005d-df98-4c32-aa9f-33570e16a26a | |
106 | (do not change this comment) */ | |
65396510 TTN |
107 | |
108 | /* test-distrib.c ends here */ |