kbd_mode: fix non-ASCII letters in comments

[oweals/busybox.git] / coreutils / touch.c

diff --git a/coreutils/touch.c b/coreutils/touch.c
index 7db6c6e3383ab2156d6c1569174a44b5cc28d3e3..92f20235cd7d1ab381d8cc17ff1cecde93f46769 100644 (file)
--- a/coreutils/touch.c
+++ b/coreutils/touch.c
@@ -2,73 +2,90 @@
 /*
  * Mini touch implementation for busybox
  *
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
  *
- * Copyright (C) 1999,2000 by Lineo, inc.
- * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
- *
- * This program 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 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+/* BB_AUDIT SUSv3 _NOT_ compliant -- options -a, -m, -r, -t not supported. */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/touch.html */
+
+/* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
  *
+ * Previous version called open() and then utime().  While this will be
+ * be necessary to implement -r and -t, it currently only makes things bigger.
+ * Also, exiting on a failure was a bug.  All args should be processed.
  */
 
-#include "busybox.h"
-#include <stdio.h>
-#include <sys/types.h>
-#include <fcntl.h>
-#include <utime.h>
-#include <errno.h>
+#include "libbb.h"
+
+/* This is a NOFORK applet. Be very careful! */
 
-extern int touch_main(int argc, char **argv)
+/* coreutils implements:
+ * -a   change only the access time
+ * -c, --no-create
+ *      do not create any files
+ * -d, --date=STRING
+ *      parse STRING and use it instead of current time
+ * -f   (ignored, BSD compat)
+ * -m   change only the modification time
+ * -r, --reference=FILE
+ *      use this file's times instead of current time
+ * -t STAMP
+ *      use [[CC]YY]MMDDhhmm[.ss] instead of current time
+ * --time=WORD
+ *      change the specified time: WORD is access, atime, or use
+ */
+
+int touch_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int touch_main(int argc UNUSED_PARAM, char **argv)
 {
+#if ENABLE_DESKTOP
+       struct utimbuf timebuf;
+       char *reference_file = NULL;
+#else
+#define reference_file NULL
+#define timebuf        (*(struct utimbuf*)NULL)
+#endif
        int fd;
-       int create = TRUE;
+       int status = EXIT_SUCCESS;
+       int flags = getopt32(argv, "c" USE_DESKTOP("r:")
+                               /*ignored:*/ "fma"
+                               USE_DESKTOP(, &reference_file));
 
-       /* Parse options */
-       while (--argc > 0 && **(++argv) == '-') {
-               while (*(++(*argv))) {
-                       switch (**argv) {
-                       case 'c':
-                               create = FALSE;
-                               break;
-                       default:
-                               usage(touch_usage);
-                               exit(FALSE);
-                       }
-               }
+       flags &= 1; /* only -c bit is left */
+       argv += optind;
+       if (!*argv) {
+               bb_show_usage();
        }
 
-       if (argc < 1) {
-               usage(touch_usage);
+       if (reference_file) {
+               struct stat stbuf;
+               xstat(reference_file, &stbuf);
+               timebuf.actime = stbuf.st_atime;
+               timebuf.modtime = stbuf.st_mtime;
        }
 
-       while (argc > 0) {
-               fd = open(*argv, (create == FALSE) ? O_RDWR : O_RDWR | O_CREAT,
-                               S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
-               if (fd < 0) {
-                       if (create == FALSE && errno == ENOENT)
-                               exit(TRUE);
-                       else {
-                               fatalError("%s", strerror(errno));
+       do {
+               if (utime(*argv, reference_file ? &timebuf : NULL)) {
+                       if (errno == ENOENT) { /* no such file */
+                               if (flags) { /* creation is disabled, so ignore */
+                                       continue;
+                               }
+                               /* Try to create the file. */
+                               fd = open(*argv, O_RDWR | O_CREAT,
+                                                 S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH
+                                                 );
+                               if ((fd >= 0) && !close(fd)) {
+                                       if (reference_file)
+                                               utime(*argv, &timebuf);
+                                       continue;
+                               }
                        }
+                       status = EXIT_FAILURE;
+                       bb_simple_perror_msg(*argv);
                }
-               close(fd);
-               if (utime(*argv, NULL)) {
-                       fatalError("%s", strerror(errno));
-               }
-               argc--;
-               argv++;
-       }
+       } while (*++argv);
 
-       return(TRUE);
+       return status;
 }