shell_cmds-53.tar.gz

[apple/shell_cmds.git] / dirname / dirname.c

diff --git a/dirname/dirname.c b/dirname/dirname.c
index 19f5b37a692caa28404b08adac0ede1574a1d1e2..11b19b25e0e5c2ec729a3eaa43785b6359e5d822 100644 (file)
--- a/dirname/dirname.c
+++ b/dirname/dirname.c
@@ -1,5 +1,3 @@
-/*     $NetBSD: dirname.c,v 1.7 1997/10/18 13:21:41 lukem Exp $        */
-
 /*-
  * Copyright (c) 1991, 1993, 1994
  *     The Regents of the University of California.  All rights reserved.
@@ -33,37 +31,32 @@
  * SUCH DAMAGE.
  */
 
-#include <sys/cdefs.h>
 #ifndef lint
-__COPYRIGHT("@(#) Copyright (c) 1991, 1993, 1994\n\
-       The Regents of the University of California.  All rights reserved.\n");
+static const char copyright[] =
+"@(#) Copyright (c) 1991, 1993, 1994\n\
+       The Regents of the University of California.  All rights reserved.\n";
 #endif /* not lint */
 
 #ifndef lint
-#if 0
-static char sccsid[] = "@(#)dirname.c  8.4 (Berkeley) 5/4/95";
-#endif
-__RCSID("$NetBSD: dirname.c,v 1.7 1997/10/18 13:21:41 lukem Exp $");
+static const char sccsid[] = "@(#)dirname.c    8.4 (Berkeley) 5/4/95";
 #endif /* not lint */
+#include <sys/cdefs.h>
+__RCSID("$FreeBSD: src/usr.bin/dirname/dirname.c,v 1.11 2002/07/28 15:43:56 dwmalone Exp $");
 
+#include <err.h>
+#include <libgen.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <locale.h>
 #include <unistd.h>
 
-int    main __P((int, char **));
-static void usage __P((void));
+void usage(void);
 
 int
-main(argc, argv)
-       int argc;
-       char **argv;
+main(int argc, char **argv)
 {
-       register char *p;
+       char *p;
        int ch;
 
-       setlocale(LC_ALL, "");
-
        while ((ch = getopt(argc, argv, "")) != -1)
                switch(ch) {
                case '?':
@@ -76,80 +69,16 @@ main(argc, argv)
        if (argc != 1)
                usage();
 
-       /*
-        * (1) If string is //, skip steps (2) through (5).
-        * (2) If string consists entirely of slash characters, string
-        *     shall be set to a single slash character.  In this case,
-        *     skip steps (3) through (8).
-        */
-       for (p = *argv;; ++p) {
-               if (!*p) {
-                       if (p > *argv)
-                               (void)printf("/\n");
-                       else
-                               (void)printf(".\n");
-                       exit(0);
-               }
-               if (*p != '/')
-                       break;
-       }
-
-       /*
-        * (3) If there are any trailing slash characters in string, they
-        *     shall be removed.
-        */
-       for (; *p; ++p);
-       while (*--p == '/')
-               continue;
-       *++p = '\0';
-
-       /*
-        * (4) If there are no slash characters remaining in string,
-        *     string shall be set to a single period character.  In this
-        *     case skip steps (5) through (8).
-        *
-        * (5) If there are any trailing nonslash characters in string,
-        *     they shall be removed.
-        */
-       while (--p >= *argv)
-               if (*p == '/')
-                       break;
-       ++p;
-       if (p == *argv) {
-               (void)printf(".\n");
-               exit(0);
-       }
-
-       /*
-        * (6) If the remaining string is //, it is implementation defined
-        *     whether steps (7) and (8) are skipped or processed.
-        *
-        * This case has already been handled, as part of steps (1) and (2).
-        */
-       
-       /*
-        * (7) If there are any trailing slash characters in string, they
-        *     shall be removed.
-        */
-       while (--p >= *argv)
-               if (*p != '/')
-                       break;
-       ++p;
-
-       /*
-        * (8) If the remaining string is empty, string shall be set to
-        *     a single slash character.
-        */
-       *p = '\0';
-       (void)printf("%s\n", p == *argv ? "/" : *argv);
+       if ((p = dirname(*argv)) == NULL)
+               err(1, "%s", *argv);
+       (void)printf("%s\n", p);
        exit(0);
 }
 
-static void
-usage()
+void
+usage(void)
 {
 
        (void)fprintf(stderr, "usage: dirname path\n");
        exit(1);
 }
-