Added the -I (isofmt) options to date, which comes in handy for scripts

(this is a confiureable option)

diff --git a/coreutils/date.c b/coreutils/date.c
index 41ceee2..4bd308b 100644 (file)
--- a/coreutils/date.c
+++ b/coreutils/date.c
@@ -138,8 +138,15 @@ int date_main(int argc, char **argv)
        time_t tm;
        struct tm tm_time;
 
+#ifdef CONFIG_FEATURE_DATE_ISOFMT
+       int ifmt = 0;
+#define GETOPT_ISOFMT  "I::"
+#else
+#define GETOPT_ISOFMT
+#endif
+
        /* Interpret command line args */
-       while ((c = getopt(argc, argv, "Rs:ud:")) != EOF) {
+       while ((c = getopt(argc, argv, "Rs:ud:" GETOPT_ISOFMT )) != EOF) {
                switch (c) {
                        case 'R':
                                rfc822 = 1;
@@ -160,11 +167,31 @@ int date_main(int argc, char **argv)
                                if ((date_str != NULL) || ((date_str = optarg) == NULL))
                                        show_usage();
                                break;
+#ifdef CONFIG_FEATURE_DATE_ISOFMT
+                       case 'I': 
+                               if ( !optarg ) 
+                                       ifmt = 1;
+                               else {
+                                       int ifmt_len = xstrlen ( optarg );
+                       
+                                       if (( ifmt_len <= 4 ) && ( strncmp ( optarg, "date", ifmt_len ) == 0 ))
+                                               ifmt = 1;
+                                       else if (( ifmt_len <= 5 ) && ( strncmp ( optarg, "hours", ifmt_len ) == 0 ))
+                                               ifmt = 2;
+                                       else if (( ifmt_len <= 7 ) && ( strncmp ( optarg, "minutes", ifmt_len ) == 0 ))
+                                               ifmt = 3;
+                                       else if (( ifmt_len <= 7 ) && ( strncmp ( optarg, "seconds", ifmt_len ) == 0 ))
+                                               ifmt = 4;
+                               }                        
+                               if ( ifmt )
+                                       break; // else show_usage();
+#endif
                        default:
                                show_usage();
                }
        }
 
+
        if ((date_fmt == NULL) && (optind < argc) && (argv[optind][0] == '+'))
                date_fmt = &argv[optind][1];   /* Skip over the '+' */
        else if (date_str == NULL) {
@@ -220,12 +247,33 @@ int date_main(int argc, char **argv)
 
        /* Deal with format string */
        if (date_fmt == NULL) {
-               date_fmt = (rfc822
-                                       ? (utc
-                                          ? "%a, %e %b %Y %H:%M:%S GMT"
-                                          : "%a, %e %b %Y %H:%M:%S %z")
-                                       : "%a %b %e %H:%M:%S %Z %Y");
-
+#ifdef CONFIG_FEATURE_DATE_ISOFMT
+               switch ( ifmt ) {
+                       case  4: 
+                               date_fmt = utc ? "%Y-%m-%dT%H:%M:%SZ" : "%Y-%m-%dT%H:%M:%S%z";
+                               break;
+                       case  3: 
+                               date_fmt = utc ? "%Y-%m-%dT%H:%MZ" : "%Y-%m-%dT%H:%M%z";
+                               break;
+                       case  2: 
+                               date_fmt = utc ? "%Y-%m-%dT%HZ" : "%Y-%m-%dT%H%z";
+                               break;
+                       case  1: 
+                               date_fmt = "%Y-%m-%d";  
+                               break;
+                       case  0:
+                       default: 
+#endif
+                               date_fmt = (rfc822
+                                           ? (utc
+                                              ? "%a, %e %b %Y %H:%M:%S GMT"
+                                              : "%a, %e %b %Y %H:%M:%S %z")
+                                           : "%a %b %e %H:%M:%S %Z %Y");
+                                           
+#ifdef CONFIG_FEATURE_DATE_ISOFMT
+                               break;
+               }
+#endif
        } else if (*date_fmt == '\0') {
                /* Imitate what GNU 'date' does with NO format string! */
                printf("\n");