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, |
5df4f04c | 4 | 2006, 2007, 2008, 2009, 2010, 2011 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 | 22 | #include <config.h> |
042c85b8 | 23 | #include <stdio.h> |
f0e8db05 | 24 | #include <fcntl.h> |
f0e8db05 | 25 | |
9ee8cf9e AS |
26 | #ifdef HAVE_UNISTD_H |
27 | #include <unistd.h> | |
28 | #endif | |
29 | ||
042c85b8 JB |
30 | /* Break string in two parts to avoid buggy C compilers that ignore characters |
31 | after nulls in strings. */ | |
32 | ||
33 | char string1[] = "Testing distribution of nonprinting chars:\n\ | |
34 | Should be 0177: \177 Should be 0377: \377 Should be 0212: \212.\n\ | |
35 | Should be 0000: "; | |
36 | ||
37 | char string2[] = ".\n\ | |
38 | This file is read by the `test-distribution' program.\n\ | |
39 | If you change it, you will make that program fail.\n"; | |
40 | ||
41 | char buf[300]; | |
80b2cbf2 | 42 | |
042c85b8 JB |
43 | /* Like `read' but keeps trying until it gets SIZE bytes or reaches eof. */ |
44 | int | |
728a982d | 45 | cool_read (int fd, char *buf, size_t size) |
042c85b8 | 46 | { |
728a982d | 47 | ssize_t num; |
f16cafe3 | 48 | ssize_t sofar = 0; |
042c85b8 JB |
49 | |
50 | while (1) | |
51 | { | |
52 | if ((num = read (fd, buf + sofar, size - sofar)) == 0) | |
53 | return sofar; | |
54 | else if (num < 0) | |
55 | return num; | |
56 | sofar += num; | |
57 | } | |
58 | } | |
59 | ||
340ff9de | 60 | int |
b8463cbf | 61 | main (int argc, char **argv) |
042c85b8 | 62 | { |
d2d92f7a | 63 | int fd; |
042c85b8 | 64 | |
d2d92f7a JB |
65 | if (argc != 2) |
66 | { | |
67 | fprintf (stderr, "Usage: %s testfile\n", argv[0]); | |
80e26b66 | 68 | exit (EXIT_FAILURE); |
d2d92f7a | 69 | } |
33b78bd6 | 70 | fd = open (argv[1], O_RDONLY); |
042c85b8 JB |
71 | if (fd < 0) |
72 | { | |
d2d92f7a | 73 | perror (argv[1]); |
80e26b66 | 74 | exit (EXIT_FAILURE); |
042c85b8 JB |
75 | } |
76 | if (cool_read (fd, buf, sizeof string1) != sizeof string1 || | |
77 | strcmp (buf, string1) || | |
78 | cool_read (fd, buf, sizeof string2) != sizeof string2 - 1 || | |
79 | strncmp (buf, string2, sizeof string2 - 1)) | |
80 | { | |
d2d92f7a | 81 | fprintf (stderr, "Data in file `%s' has been damaged.\n\ |
042c85b8 | 82 | Most likely this means that many nonprinting characters\n\ |
d2d92f7a JB |
83 | have been corrupted in the files of Emacs, and it will not work.\n", |
84 | argv[1]); | |
80e26b66 | 85 | exit (EXIT_FAILURE); |
042c85b8 JB |
86 | } |
87 | close (fd); | |
65396510 | 88 | return EXIT_SUCCESS; |
042c85b8 | 89 | } |
ab5796a9 MB |
90 | |
91 | /* arch-tag: 3a89005d-df98-4c32-aa9f-33570e16a26a | |
92 | (do not change this comment) */ | |
65396510 TTN |
93 | |
94 | /* test-distrib.c ends here */ |