touch: implement -d --date (our own testsuite needs that)

function                                             old     new   delta
static.uname_longopts                                  -     137    +137
touch_main                                           231     360    +129
static.touch_longopts                                  -      32     +32
validate_tm_time                                       -      28     +28
packed_usage                                       26616   26624      +8
date_main                                            687     686      -1
static.longopts                                      162       -    -162
------------------------------------------------------------------------------
(add/remove: 3/1 grow/shrink: 2/1 up/down: 334/-163)          Total: 171 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

3 files changed, 36 insertions, 17 deletions

diff --git a/coreutils/date.c b/coreutils/date.c
index 7f2a5b3..09ced0e 100644
--- a/coreutils/date.c
+++ b/coreutils/date.c
@@ -142,12 +142,11 @@ int date_main(int argc UNUSED_PARAM, char **argv)
 		} else {
 			parse_datestr(date_str, &tm_time);
 		}
+
 		/* Correct any day of week and day of year etc. fields */
 		tm_time.tm_isdst = -1;	/* Be sure to recheck dst */
-		tm = mktime(&tm_time);
-		if (tm < 0) {
-			bb_error_msg_and_die(bb_msg_invalid_date, date_str);
-		}
+		tm = validate_tm_time(date_str, &tm_time);
+
 		maybe_set_utc(opt);
 
 		/* if setting time, set it */
diff --git a/coreutils/touch.c b/coreutils/touch.c
index 7d434a2..1b4a5f0 100644
--- a/coreutils/touch.c
+++ b/coreutils/touch.c
@@ -41,31 +41,34 @@ int touch_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int touch_main(int argc UNUSED_PARAM, char **argv)
 {
 #if ENABLE_DESKTOP
-#if ENABLE_LONG_OPTS
-	static const char longopts[] ALIGN1 =
+# if ENABLE_LONG_OPTS
+	static const char touch_longopts[] ALIGN1 =
 		/* name, has_arg, val */
 		"no-create\0"         No_argument       "c"
 		"reference\0"         Required_argument "r"
+		"date\0"              Required_argument "d"
 	;
-#endif
+# endif
 	struct utimbuf timebuf;
 	char *reference_file = NULL;
+	char *date_str = NULL;
 #else
-#define reference_file NULL
-#define timebuf        (*(struct utimbuf*)NULL)
+# define reference_file NULL
+# define date_str       NULL
+# define timebuf        (*(struct utimbuf*)NULL)
 #endif
 	int fd;
 	int status = EXIT_SUCCESS;
 	int opts;
 
-#if ENABLE_DESKTOP
-#if ENABLE_LONG_OPTS
-	applet_long_options = longopts;
+#if ENABLE_DESKTOP && ENABLE_LONG_OPTS
+	applet_long_options = touch_longopts;
 #endif
-#endif
-	opts = getopt32(argv, "c" IF_DESKTOP("r:")
+	opts = getopt32(argv, "c" IF_DESKTOP("r:d:")
 				/*ignored:*/ "fma"
-				IF_DESKTOP(, &reference_file));
+				IF_DESKTOP(, &reference_file)
+				IF_DESKTOP(, &date_str)
+	);
 
 	opts &= 1; /* only -c bit is left */
 	argv += optind;
@@ -80,6 +83,23 @@ int touch_main(int argc UNUSED_PARAM, char **argv)
 		timebuf.modtime = stbuf.st_mtime;
 	}
 
+	if (date_str) {
+		struct tm tm_time;
+		time_t t;
+
+		//time(&t);
+		//localtime_r(&t, &tm_time);
+		memset(&tm_time, 0, sizeof(tm_time));
+		parse_datestr(date_str, &tm_time);
+
+		/* Correct any day of week and day of year etc. fields */
+		tm_time.tm_isdst = -1;	/* Be sure to recheck dst */
+		t = validate_tm_time(date_str, &tm_time);
+
+		timebuf.actime = t;
+		timebuf.modtime = t;
+	}
+
 	do {
 		if (utime(*argv, reference_file ? &timebuf : NULL)) {
 			if (errno == ENOENT) { /* no such file */
diff --git a/coreutils/uname.c b/coreutils/uname.c
index df45660..8453bcc 100644
--- a/coreutils/uname.c
+++ b/coreutils/uname.c
@@ -74,7 +74,7 @@ int uname_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int uname_main(int argc UNUSED_PARAM, char **argv)
 {
 #if ENABLE_LONG_OPTS
-	static const char longopts[] ALIGN1 =
+	static const char uname_longopts[] ALIGN1 =
 		/* name, has_arg, val */
 		"all\0"               No_argument       "a"
 		"kernel-name\0"       No_argument       "s"
@@ -97,7 +97,7 @@ int uname_main(int argc UNUSED_PARAM, char **argv)
 	const unsigned short *delta;
 	unsigned toprint;
 
-	IF_LONG_OPTS(applet_long_options = longopts);
+	IF_LONG_OPTS(applet_long_options = uname_longopts);
 	toprint = getopt32(argv, options);
 
 	if (argv[optind]) { /* coreutils-6.9 compat */