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date: make help text more understandable; small shrink
text data bss dec hex filename 799025 641 7380 807046 c5086 busybox_old 799009 641 7380 807030 c5076 busybox_unstripped
This commit is contained in:
Denis Vlasenko
parent
92e13c2a11
commit
9ce4ae8142
104
coreutils/date.c
104
coreutils/date.c
@ -39,70 +39,70 @@ static void maybe_set_utc(int opt)
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}
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int date_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int date_main(int argc, char **argv)
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int date_main(int argc ATTRIBUTE_UNUSED, char **argv)
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{
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time_t tm;
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struct tm tm_time;
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time_t tm;
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unsigned opt;
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int ifmt = -1;
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char *date_str = NULL;
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char *date_fmt = NULL;
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char *filename = NULL;
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char *isofmt_arg;
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char *hintfmt_arg;
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char *date_str;
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char *fmt_dt2str;
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char *fmt_str2dt;
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char *filename;
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char *isofmt_arg = NULL;
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opt_complementary = "d--s:s--d"
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USE_FEATURE_DATE_ISOFMT(":R--I:I--R");
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opt = getopt32(argv, "Rs:ud:r:"
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USE_FEATURE_DATE_ISOFMT("I::D:"),
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&date_str, &date_str, &filename
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USE_FEATURE_DATE_ISOFMT(, &isofmt_arg, &hintfmt_arg));
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USE_FEATURE_DATE_ISOFMT(, &isofmt_arg, &fmt_str2dt));
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argv += optind;
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maybe_set_utc(opt);
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if (ENABLE_FEATURE_DATE_ISOFMT && (opt & DATE_OPT_TIMESPEC)) {
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if (!isofmt_arg) {
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ifmt = 0; /* default is date */
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} else {
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static const char *const isoformats[] = {
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"date", "hours", "minutes", "seconds"
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};
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for (ifmt = 0; ifmt < 4; ifmt++)
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if (!strcmp(isofmt_arg, isoformats[ifmt]))
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goto found;
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/* parse error */
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bb_show_usage();
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found: ;
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ifmt = 0; /* default is date */
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if (isofmt_arg) {
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static const char isoformats[] ALIGN1 =
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"date\0""hours\0""minutes\0""seconds\0";
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ifmt = index_in_strings(isoformats, isofmt_arg);
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if (ifmt < 0)
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bb_show_usage();
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}
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}
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/* XXX, date_fmt == NULL from this always */
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if ((date_fmt == NULL) && (optind < argc) && (argv[optind][0] == '+')) {
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date_fmt = &argv[optind][1]; /* Skip over the '+' */
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} else if (date_str == NULL) {
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fmt_dt2str = NULL;
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if (argv[0] && argv[0][0] == '+') {
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fmt_dt2str = &argv[0][1]; /* Skip over the '+' */
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argv++;
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}
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if (!(opt & (DATE_OPT_SET | DATE_OPT_DATE))) {
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opt |= DATE_OPT_SET;
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date_str = argv[optind];
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date_str = argv[0]; /* can be NULL */
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}
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/* Now we have parsed all the information except the date format
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which depends on whether the clock is being set or read */
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if (filename) {
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if (opt & DATE_OPT_REFERENCE) {
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struct stat statbuf;
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xstat(filename, &statbuf);
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tm = statbuf.st_mtime;
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} else
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time(&tm);
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memcpy(&tm_time, localtime(&tm), sizeof(tm_time));
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/* Zero out fields - take her back to midnight! */
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/* If date string is given, update tm_time, and maybe set date */
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if (date_str != NULL) {
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/* Zero out fields - take her back to midnight! */
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tm_time.tm_sec = 0;
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tm_time.tm_min = 0;
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tm_time.tm_hour = 0;
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/* Process any date input to UNIX time since 1 Jan 1970 */
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if (ENABLE_FEATURE_DATE_ISOFMT && (opt & DATE_OPT_HINT)) {
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strptime(date_str, hintfmt_arg, &tm_time);
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if (strptime(date_str, fmt_str2dt, &tm_time) == NULL)
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bb_error_msg_and_die(bb_msg_invalid_date, date_str);
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} else if (strchr(date_str, ':') != NULL) {
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/* Parse input and assign appropriately to tm_time */
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@ -181,55 +181,53 @@ int date_main(int argc, char **argv)
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/* Display output */
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/* Deal with format string */
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if (date_fmt == NULL) {
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if (fmt_dt2str == NULL) {
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int i;
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date_fmt = xzalloc(32);
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fmt_dt2str = xzalloc(32);
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if (ENABLE_FEATURE_DATE_ISOFMT && ifmt >= 0) {
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strcpy(date_fmt, "%Y-%m-%d");
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strcpy(fmt_dt2str, "%Y-%m-%d");
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if (ifmt > 0) {
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i = 8;
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date_fmt[i++] = 'T';
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date_fmt[i++] = '%';
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date_fmt[i++] = 'H';
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fmt_dt2str[i++] = 'T';
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fmt_dt2str[i++] = '%';
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fmt_dt2str[i++] = 'H';
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if (ifmt > 1) {
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date_fmt[i++] = ':';
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date_fmt[i++] = '%';
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date_fmt[i++] = 'M';
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}
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if (ifmt > 2) {
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date_fmt[i++] = ':';
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date_fmt[i++] = '%';
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date_fmt[i++] = 'S';
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fmt_dt2str[i++] = ':';
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fmt_dt2str[i++] = '%';
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fmt_dt2str[i++] = 'M';
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if (ifmt > 2) {
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fmt_dt2str[i++] = ':';
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fmt_dt2str[i++] = '%';
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fmt_dt2str[i++] = 'S';
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}
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}
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format_utc:
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date_fmt[i++] = '%';
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date_fmt[i] = (opt & DATE_OPT_UTC) ? 'Z' : 'z';
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fmt_dt2str[i++] = '%';
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fmt_dt2str[i] = (opt & DATE_OPT_UTC) ? 'Z' : 'z';
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}
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} else if (opt & DATE_OPT_RFC2822) {
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/* Undo busybox.c for date -R */
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if (ENABLE_LOCALE_SUPPORT)
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setlocale(LC_TIME, "C");
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strcpy(date_fmt, "%a, %d %b %Y %H:%M:%S ");
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strcpy(fmt_dt2str, "%a, %d %b %Y %H:%M:%S ");
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i = 22;
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goto format_utc;
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} else /* default case */
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date_fmt = (char*)"%a %b %e %H:%M:%S %Z %Y";
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fmt_dt2str = (char*)"%a %b %e %H:%M:%S %Z %Y";
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}
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#define date_buf bb_common_bufsiz1
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if (*date_fmt == '\0') {
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if (*fmt_dt2str == '\0') {
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/* With no format string, just print a blank line */
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date_buf[0] = '\0';
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} else {
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/* Handle special conversions */
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if (strncmp(date_fmt, "%f", 2) == 0) {
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date_fmt = (char*)"%Y.%m.%d-%H:%M:%S";
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if (strncmp(fmt_dt2str, "%f", 2) == 0) {
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fmt_dt2str = (char*)"%Y.%m.%d-%H:%M:%S";
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}
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/* Generate output string */
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strftime(date_buf, sizeof(date_buf), date_fmt, &tm_time);
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strftime(date_buf, sizeof(date_buf), fmt_dt2str, &tm_time);
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}
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puts(date_buf);
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@ -558,22 +558,30 @@
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"world\n"
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#define date_trivial_usage \
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"[OPTION]... [MMDDhhmm[[CC]YY][.ss]] [+FORMAT]"
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"[OPTION]... [+FMT] [TIME]"
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#define date_full_usage \
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"Display current time in the given FORMAT, or set system date\n" \
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"Display time (using +FMT), or set time\n" \
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"\nOptions:" \
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"\n -u Work in UTC (don't convert to local time)" \
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"\n -R Output RFC-822 compliant date string" \
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"\n -d STRING Display time described by STRING, not 'now'" \
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USE_FEATURE_DATE_ISOFMT( \
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"\n -I[TIMESPEC] Output an ISO-8601 compliant date/time string" \
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"\n TIMESPEC='date' (or missing) for date only," \
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"\n -I[SPEC] Output ISO-8601 compliant date string" \
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"\n SPEC='date' (default) for date only," \
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"\n 'hours', 'minutes', or 'seconds' for date and" \
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"\n time to the indicated precision" \
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"\n -D hint Use 'hint' as date format, via strptime()" \
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) \
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"\n -s STRING Set time described by STRING" \
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"\n -r FILE Display the last modification time of FILE" \
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"\n -u Print or sets Coordinated Universal Time" \
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"\n -d TIME Display TIME, not 'now'" \
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"\n -r FILE Display last modification time of FILE" \
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"\n [-s] TIME Set time to TIME" \
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USE_FEATURE_DATE_ISOFMT( \
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"\n -D FMT Use FMT for str->date conversion" \
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) \
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"\n" \
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"\nRecognized formats for TIME:" \
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"\n [hh:]mm:ss" \
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"\n mon.day-hh:mm[:ss]" \
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"\n year.mon.day-hh:mm[:ss]" \
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"\n MMDDhhmm[[YY]YY][.ss]" \
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#define date_example_usage \
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"$ date\n" \
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