- char *date_str = NULL;
- char *date_fmt = NULL;
- char *t_buff;
- int set_time = 0;
- int rfc822 = 0;
- int utc = 0;
- int use_arg = 0;
- int n_args;
- time_t tm;
- struct tm tm_time;
- char optc;
-
- /* Interpret command line args */
-
-
- while ((optc = getopt_long (argc, argv, "d:Rs:u", long_options, NULL))
- != EOF) {
- switch (optc) {
- case 0:
- break;
-
- case 'R':
- rfc822 = 1;
- break;
-
- case 's':
- set_time = 1;
- if(date_str != NULL) date_err();
- date_str = optarg;
- break;
-
- case 'u':
- utc = 1;
- if (putenv ("TZ=UTC0") != 0) {
- fprintf(stderr,"date: memory exhausted\n");
- return(1);
- }
-#if LOCALTIME_CACHE
- tzset ();
-#endif break;
-
- case 'd':
- use_arg = 1;
- if(date_str != NULL) date_err();
- date_str = optarg;
- break;
-
- default:
- usage(date_usage);
- break;
- }
- }
-
-
- n_args = argc - optind;
-
- while (n_args--){
- switch(argv[optind][0]) {
- case '+':
- /* Date format strings */
- if(date_fmt != NULL) {
- fprintf(stderr, "date: only one date format can be given.\n");
- return(1);
- }
- date_fmt = &argv[optind][1];
- break;
-
- case '\0':
- break;
-
- default:
- /* Anything left over must be a date string to set the time */
- set_time = 1;
- if(date_str != NULL) date_err();
- date_str = argv[optind];
- break;
- }
- optind++;
- }
-
-
- /* Now we have parsed all the information except the date format
- which depends on whether the clock is being set or read */
-
- time(&tm);
- memcpy(&tm_time, localtime(&tm), sizeof(tm_time));
- /* Zero out fields - take her back to midnight!*/
- if(date_str != NULL) {
- tm_time.tm_sec = 0;
- tm_time.tm_min = 0;
- tm_time.tm_hour = 0;
- }
-
- /* Process any date input to UNIX time since 1 Jan 1970 */
- if(date_str != NULL) {
-
- if(strchr(date_str, ':') != NULL) {
- date_conv_ftime(&tm_time, date_str);
- } else {
- date_conv_time(&tm_time, date_str);
- }
-
- /* Correct any day of week and day of year etc fields */
- tm = mktime(&tm_time);
- if (tm < 0 ) {
- fprintf(stderr, "date: invalid date `%s'\n", date_str);
- exit(1);
- }
-
- /* if setting time, set it */
- if(set_time) {
- if( stime(&tm) < 0) {
- fprintf(stderr, "date: can't set date.\n");
- exit(1);
- }
- }
- }
-
- /* Display output */
-
- /* Deal with format string */
- if(date_fmt == NULL) {
- date_fmt = (rfc822
- ? (utc
- ? "%a, %_d %b %Y %H:%M:%S GMT"
- : "%a, %_d %b %Y %H:%M:%S %z")
- : "%a %b %e %H:%M:%S %Z %Y");
-
- } else if ( *date_fmt == '\0' ) {
- /* Imitate what GNU 'date' does with NO format string! */
- printf ("\n");
- return(0);
- }
-
- /* Handle special conversions */
-
- if( strncmp( date_fmt, "%f", 2) == 0 ) {
- date_fmt = "%Y.%m.%d-%H:%M:%S";
- }
-
- /* Print OUTPUT (after ALL that!) */
- t_buff = malloc(201);
- strftime(t_buff, 200, date_fmt, &tm_time);
- printf("%s\n", t_buff);
-
- return(0);
-
+ struct tm tm_time;
+ time_t tm;
+ unsigned opt;
+ int ifmt = -1;
+ char *date_str;
+ char *fmt_dt2str;
+ char *fmt_str2dt;
+ char *filename;
+ char *isofmt_arg = NULL;
+
+ opt_complementary = "d--s:s--d"
+ IF_FEATURE_DATE_ISOFMT(":R--I:I--R");
+ opt = getopt32(argv, "Rs:ud:r:"
+ IF_FEATURE_DATE_ISOFMT("I::D:"),
+ &date_str, &date_str, &filename
+ IF_FEATURE_DATE_ISOFMT(, &isofmt_arg, &fmt_str2dt));
+ argv += optind;
+ maybe_set_utc(opt);
+
+ if (ENABLE_FEATURE_DATE_ISOFMT && (opt & OPT_TIMESPEC)) {
+ ifmt = 0; /* default is date */
+ if (isofmt_arg) {
+ static const char isoformats[] ALIGN1 =
+ "date\0""hours\0""minutes\0""seconds\0";
+ ifmt = index_in_strings(isoformats, isofmt_arg);
+ if (ifmt < 0)
+ bb_show_usage();
+ }
+ }
+
+ fmt_dt2str = NULL;
+ if (argv[0] && argv[0][0] == '+') {
+ fmt_dt2str = &argv[0][1]; /* Skip over the '+' */
+ argv++;
+ }
+ if (!(opt & (OPT_SET | OPT_DATE))) {
+ opt |= OPT_SET;
+ date_str = argv[0]; /* can be NULL */
+ if (date_str)
+ argv++;
+ }
+ if (*argv)
+ bb_show_usage();
+
+ /* Now we have parsed all the information except the date format
+ which depends on whether the clock is being set or read */
+
+ if (opt & OPT_REFERENCE) {
+ struct stat statbuf;
+ xstat(filename, &statbuf);
+ tm = statbuf.st_mtime;
+ } else {
+ time(&tm);
+ }
+ localtime_r(&tm, &tm_time);
+
+ /* If date string is given, update tm_time, and maybe set date */
+ if (date_str != NULL) {
+ /* Zero out fields - take her back to midnight! */
+ tm_time.tm_sec = 0;
+ tm_time.tm_min = 0;
+ tm_time.tm_hour = 0;
+
+ /* Process any date input to UNIX time since 1 Jan 1970 */
+ if (ENABLE_FEATURE_DATE_ISOFMT && (opt & OPT_HINT)) {
+ if (strptime(date_str, fmt_str2dt, &tm_time) == NULL)
+ bb_error_msg_and_die(bb_msg_invalid_date, date_str);
+ } 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 = validate_tm_time(date_str, &tm_time);
+
+ maybe_set_utc(opt);
+
+ /* if setting time, set it */
+ if ((opt & OPT_SET) && stime(&tm) < 0) {
+ bb_perror_msg("cannot set date");
+ }
+ }
+
+ /* Display output */
+
+ /* Deal with format string */
+ if (fmt_dt2str == NULL) {
+ int i;
+ fmt_dt2str = xzalloc(32);
+ if (ENABLE_FEATURE_DATE_ISOFMT && ifmt >= 0) {
+ strcpy(fmt_dt2str, "%Y-%m-%d");
+ if (ifmt > 0) {
+ i = 8;
+ fmt_dt2str[i++] = 'T';
+ fmt_dt2str[i++] = '%';
+ fmt_dt2str[i++] = 'H';
+ if (ifmt > 1) {
+ fmt_dt2str[i++] = ':';
+ fmt_dt2str[i++] = '%';
+ fmt_dt2str[i++] = 'M';
+ if (ifmt > 2) {
+ fmt_dt2str[i++] = ':';
+ fmt_dt2str[i++] = '%';
+ fmt_dt2str[i++] = 'S';
+ }
+ }
+ format_utc:
+ fmt_dt2str[i++] = '%';
+ fmt_dt2str[i] = (opt & OPT_UTC) ? 'Z' : 'z';
+ }
+ } else if (opt & OPT_RFC2822) {
+ /* Undo busybox.c for date -R */
+ if (ENABLE_LOCALE_SUPPORT)
+ setlocale(LC_TIME, "C");
+ strcpy(fmt_dt2str, "%a, %d %b %Y %H:%M:%S ");
+ i = 22;
+ goto format_utc;
+ } else /* default case */
+ fmt_dt2str = (char*)"%a %b %e %H:%M:%S %Z %Y";
+ }
+
+#define date_buf bb_common_bufsiz1
+ if (*fmt_dt2str == '\0') {
+ /* With no format string, just print a blank line */
+ date_buf[0] = '\0';
+ } else {
+ /* Handle special conversions */
+ if (strncmp(fmt_dt2str, "%f", 2) == 0) {
+ fmt_dt2str = (char*)"%Y.%m.%d-%H:%M:%S";
+ }
+
+ /* Generate output string */
+ strftime(date_buf, sizeof(date_buf), fmt_dt2str, &tm_time);
+ }
+ puts(date_buf);
+
+ return EXIT_SUCCESS;