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comparison kpathsea/kpsestat.c @ 3172:1f0b06020e36

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[project @ 1998-04-24 04:24:34 by jwe]
author jwe
date Fri, 24 Apr 1998 04:24:48 +0000
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3171:c925de13bb22 3172:1f0b06020e36
1 /* kpsestat -- show file permissions of a file in octal form.
2 Copyright (C) 1997 Olaf Weber.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
7 any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
17
18 #include <kpathsea/config.h>
19 #include <kpathsea/c-stat.h>
20 #include <stdio.h>
21 #include <stdlib.h>
22
23 #ifdef WIN32
24 #include <string.h>
25 #endif
26
27 /*
28 * kpsestat mode x
29 * Print stat bits of file x on stdout, as modified by mode.
30 */
31
32 int main (argc, argv)
33 int argc;
34 char *argv[];
35 {
36 char * mode_string;
37 int to_set, to_keep, to_clear;
38 int result;
39 struct stat f;
40
41 if (argc > 1 && strcmp (argv[1], "--help") == 0) {
42 printf ("Usage: %s MODE FILE\n\
43 Print octal permissions of FILE as modified by MODE on standard output.\n\
44 MODE is a subset of the symbolic permissions accepted by chmod.\n\
45 Use MODE = to obtain the unchanged permissions.\n\
46 \n\
47 --help display this help and exit\n\
48 --version output version information and exit\n\n", argv[0]);
49 fputs ("Email bug reports to tex-k@mail.tug.org.\n", stdout);
50 exit(0);
51 } else if (argc > 1 && strcmp (argv[1], "--version") == 0) {
52 printf ("%s (%s)\n\
53 Copyright (C) 1997 Olaf Weber.\n\
54 There is NO warranty. You may redistribute this software\n\
55 under the terms of the GNU General Public License.\n\
56 For more information about these matters, see the file named COPYING.\n\
57 Primary author of %s: Olaf Weber.\n",
58 argv[0], KPSEVERSION, argv[0]);
59 exit (0);
60 }
61
62 /* insist on exactly two args */
63 if (argc != 3) {
64 fprintf (stderr, "%s: Need exactly two arguments.\n\
65 Try `%s --help' for more information.\n", argv[0], argv[0]);
66 exit(1);
67 }
68
69 mode_string = argv[1];
70 to_set = to_keep = to_clear = 0;
71 for (;;++mode_string) {
72 int affected = 0;
73 int action = 0;
74 int value = 0;
75
76 for (;;++mode_string)
77 switch (*mode_string) {
78 case 'u': affected |= 04700; break;
79 case 'g': affected |= 02070; break;
80 case 'o': affected |= 01007; break;
81 case 'a': affected |= 07777; break;
82 default: goto no_more_affected;
83 }
84 no_more_affected:
85 if (affected == 0)
86 affected = 07777;
87 action = *mode_string;
88 ++mode_string;
89 for (;;++mode_string)
90 switch (*mode_string) {
91 case 'r': value |= 00444 & affected; break;
92 case 'w': value |= 00222 & affected; break;
93 case 'x': value |= 00111 & affected; break;
94 case 's': value |= 06000 & affected; break;
95 case 't': value |= 01000 & affected; break;
96 default: goto no_more_values;
97 }
98 no_more_values:
99 switch (action) {
100 case '-': to_clear |= value; break;
101 case '=': to_keep |= value; break;
102 case '+': to_set |= value; break;
103 default:
104 fprintf(stderr, "%s: Invalid mode\n", argv[0]);
105 exit(1);
106 }
107 if (*mode_string != ',')
108 break;
109 }
110 if (*mode_string != 0) {
111 fprintf(stderr, "%s: Invalid mode.\n", argv[0]);
112 exit(1);
113 }
114
115 /* does the file exist? */
116 if (stat (argv[2], &f) < 0) {
117 perror(argv[0]);
118 return 1;
119 }
120
121 result = f.st_mode & ~S_IFMT;
122 result |= to_set;
123 result |= to_keep & result;
124 result &= ~to_clear;
125
126 printf("%o\n", result);
127
128 return 0;
129 }