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Commit | Line | Data |
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3185942a JA |
1 | /* xcase - change uppercase characters to lowercase or vice versa. */ |
2 | ||
3 | /* Copyright (C) 2008,2009 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GNU Bash. | |
6 | ||
7 | Bash is free software: you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation, either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | Bash is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with Bash. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
21 | #ifdef HAVE_CONFIG_H | |
22 | #include "config.h" | |
23 | #endif | |
24 | ||
25 | #include <stdio.h> | |
26 | #include <ctype.h> | |
27 | ||
28 | #if HAVE_UNISTD_H | |
29 | #include <unistd.h> | |
30 | #endif | |
31 | ||
32 | #include "bashansi.h" | |
33 | #include <errno.h> | |
34 | ||
35 | #ifndef errno | |
36 | extern int errno; | |
37 | #endif | |
38 | ||
a0c0a00f CR |
39 | extern int optind; |
40 | ||
3185942a JA |
41 | #define LOWER 1 |
42 | #define UPPER 2 | |
43 | ||
ac50fbac | 44 | int |
3185942a JA |
45 | main(ac, av) |
46 | int ac; | |
47 | char **av; | |
48 | { | |
49 | int c, x; | |
50 | int op; | |
51 | FILE *inf; | |
52 | ||
53 | op = 0; | |
54 | while ((c = getopt(ac, av, "lnu")) != EOF) { | |
55 | switch (c) { | |
56 | case 'n': | |
57 | setbuf (stdout, (char *)NULL); | |
58 | break; | |
59 | case 'u': | |
60 | op = UPPER; | |
61 | break; | |
62 | case 'l': | |
63 | op = LOWER; | |
64 | break; | |
65 | default: | |
66 | fprintf(stderr, "casemod: usage: casemod [-lnu] [file]\n"); | |
67 | exit(2); | |
68 | } | |
69 | } | |
70 | av += optind; | |
71 | ac -= optind; | |
72 | ||
73 | if (av[0] && (av[0][0] != '-' || av[0][1])) { | |
74 | inf = fopen(av[0], "r"); | |
75 | if (inf == 0) { | |
76 | fprintf(stderr, "casemod: %s: cannot open: %s\n", av[0], strerror(errno)); | |
77 | exit(1); | |
78 | } | |
79 | } else | |
80 | inf = stdin; | |
81 | ||
82 | while ((c = getc(inf)) != EOF) { | |
83 | switch (op) { | |
84 | case UPPER: | |
85 | x = islower(c) ? toupper(c) : c; | |
86 | break; | |
87 | case LOWER: | |
88 | x = isupper(c) ? tolower(c) : c; | |
89 | break; | |
90 | default: | |
91 | x = c; | |
92 | break; | |
93 | } | |
94 | putchar(x); | |
95 | } | |
96 | ||
97 | exit(0); | |
98 | } |