Imported BSD-licensed rev(1) from FreeBSD (uses brand new getopt())

diff --git a/commands/simple/Makefile b/commands/simple/Makefile
index 4e67ecd6e74612921459846c0024df5cd9c95eed..9321b563ccbfe0861aed1bd816924eae19ef2472 100755 (executable)
--- a/commands/simple/Makefile
+++ b/commands/simple/Makefile
@@ -140,6 +140,7 @@ ALL = \
        rcp \
        rdate \
        readall \
+       rev \
        readfs \
        remsync \
        rget \
@@ -601,6 +602,10 @@ rdate:     rdate.c
        $(CCLD) -o $@ rdate.c
        @install -S 8kw $@
 
+rev:   rev.c
+       $(CCLD) -o $@ rev.c
+       @install -S 8kw $@
+
 readall:       readall.c
        $(CCLD) -o $@ $?
        @install -S 4kw $@
@@ -820,7 +825,8 @@ install:    \
                /usr/bin/del_route \
        /usr/bin/at \
        /usr/bin/backup \
-               /usr/bin/restore \
+       /usr/bin/restore \
+       /usr/bin/rev \
        /usr/bin/badblocks \
        /usr/bin/banner \
        /usr/bin/basename \
@@ -1364,6 +1370,9 @@ install:  \
 /usr/bin/remsync:      remsync
        install -cs -o bin $? $@
 
+/usr/bin/rev:  rev
+       install -cs -o bin $? $@
+
 /usr/bin/rget: rget
        install -cs -o bin $? $@
 

diff --git a/commands/simple/rev.c b/commands/simple/rev.c
new file mode 100644 (file)
index 0000000..b6948ff
--- /dev/null
+++ b/commands/simple/rev.c
@@ -0,0 +1,108 @@
+/*-
+ * Copyright (c) 1987, 1992, 1993
+ *     The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static const char copyright[] =
+"@(#) Copyright (c) 1987, 1992, 1993\n\
+       The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+void usage(void);
+
+int
+main(int argc, char *argv[])
+{
+       const char *filename;
+       char p[2000], *t;
+       FILE *fp;
+       size_t len;
+       int ch, rval;
+
+       setlocale(LC_ALL, "");
+
+       while ((ch = getopt(argc, argv, "")) != -1)
+               switch(ch) {
+               case '?':
+               default:
+                       usage();
+               }
+
+       argc -= optind;
+       argv += optind;
+
+       fp = stdin;
+       filename = "stdin";
+       rval = 0;
+       do {
+               if (*argv) {
+                       if ((fp = fopen(*argv, "r")) == NULL) {
+                               perror(*argv);
+                               rval = 1;
+                               ++argv;
+                               continue;
+                       }
+                       filename = *argv++;
+               }
+               while ((fgets(p, sizeof(p)-1, fp)) != NULL) {
+                       len = strlen(p);
+                       if (p[len - 1] == '\n')
+                               --len;
+                       t = p + len - 1;
+                       for (t = p + len - 1; t >= p; --t)
+                               putchar(*t);
+                       putchar('\n');
+               }
+               if (ferror(fp)) {
+                       perror(filename);
+                       rval = 1;
+               }
+               (void)fclose(fp);
+       } while(*argv);
+       exit(rval);
+}
+
+void
+usage(void)
+{
+       (void)fprintf(stderr, "usage: rev [file ...]\n");
+       exit(1);
+}