summaryrefslogtreecommitdiffstats
path: root/support/xcase.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--support/xcase.c98
1 files changed, 98 insertions, 0 deletions
diff --git a/support/xcase.c b/support/xcase.c
new file mode 100644
index 0000000..527840d
--- /dev/null
+++ b/support/xcase.c
@@ -0,0 +1,98 @@
+/* xcase - change uppercase characters to lowercase or vice versa. */
+
+/* Copyright (C) 2008,2009 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash.
+
+ Bash is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Bash is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Bash. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <ctype.h>
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include "bashansi.h"
+#include <errno.h>
+
+#ifndef errno
+extern int errno;
+#endif
+
+extern int optind;
+
+#define LOWER 1
+#define UPPER 2
+
+int
+main(ac, av)
+int ac;
+char **av;
+{
+ int c, x;
+ int op;
+ FILE *inf;
+
+ op = 0;
+ while ((c = getopt(ac, av, "lnu")) != EOF) {
+ switch (c) {
+ case 'n':
+ setbuf (stdout, (char *)NULL);
+ break;
+ case 'u':
+ op = UPPER;
+ break;
+ case 'l':
+ op = LOWER;
+ break;
+ default:
+ fprintf(stderr, "casemod: usage: casemod [-lnu] [file]\n");
+ exit(2);
+ }
+ }
+ av += optind;
+ ac -= optind;
+
+ if (av[0] && (av[0][0] != '-' || av[0][1])) {
+ inf = fopen(av[0], "r");
+ if (inf == 0) {
+ fprintf(stderr, "casemod: %s: cannot open: %s\n", av[0], strerror(errno));
+ exit(1);
+ }
+ } else
+ inf = stdin;
+
+ while ((c = getc(inf)) != EOF) {
+ switch (op) {
+ case UPPER:
+ x = islower(c) ? toupper(c) : c;
+ break;
+ case LOWER:
+ x = isupper(c) ? tolower(c) : c;
+ break;
+ default:
+ x = c;
+ break;
+ }
+ putchar(x);
+ }
+
+ exit(0);
+}