touch: implement -t TIME (needed for testsuite)
This changes date -d TIME format a bit, makes it more compatible function old new delta parse_datestr 391 618 +227 touch_main 360 361 +1 packed_usage 26624 26615 -9 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
parent
7aca89a7a3
commit
38dd8aa657
@ -64,10 +64,14 @@ int touch_main(int argc UNUSED_PARAM, char **argv)
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#if ENABLE_DESKTOP && ENABLE_LONG_OPTS
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applet_long_options = touch_longopts;
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#endif
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opts = getopt32(argv, "c" IF_DESKTOP("r:d:")
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/* -d and -t both set time. In coreutils,
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* accepted data format differs a bit between -d and -t.
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* We accept the same formats for both */
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opts = getopt32(argv, "c" IF_DESKTOP("r:d:t:")
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/*ignored:*/ "fma"
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IF_DESKTOP(, &reference_file)
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IF_DESKTOP(, &date_str)
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IF_DESKTOP(, &date_str)
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);
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opts &= 1; /* only -c bit is left */
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@ -668,6 +668,7 @@
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#define date_full_usage "\n\n" \
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"Display time (using +FMT), or set time\n" \
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"\nOptions:" \
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"\n [-s] TIME Set time to TIME" \
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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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IF_FEATURE_DATE_ISOFMT( \
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@ -676,18 +677,17 @@
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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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) \
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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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"\n -d TIME Display TIME, not 'now'" \
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IF_FEATURE_DATE_ISOFMT( \
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"\n -D FMT Use FMT for str->date conversion" \
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"\n -D FMT Use FMT for -d TIME 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 [YYYY.]MM.DD-hh:mm[:ss]" \
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"\n YYYY-MM-DD hh:mm[:ss]" \
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"\n MMDDhhmm[[YY]YY][.ss]" \
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"\n [[[[[YY]YY]MM]DD]hh]mm[.ss]" \
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#define date_example_usage \
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"$ date\n" \
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97
libbb/time.c
97
libbb/time.c
@ -16,50 +16,117 @@ void FAST_FUNC parse_datestr(const char *date_str, struct tm *tm_time)
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if (last_colon != NULL) {
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/* Parse input and assign appropriately to tm_time */
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/* HH:MM */
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if (sscanf(date_str, "%u:%u%c",
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&tm_time->tm_hour,
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&tm_time->tm_min,
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&end) >= 2) {
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/* no adjustments needed */
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} else if (sscanf(date_str, "%u.%u-%u:%u%c",
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} else
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/* mm.dd-HH:MM */
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if (sscanf(date_str, "%u.%u-%u:%u%c",
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&tm_time->tm_mon, &tm_time->tm_mday,
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&tm_time->tm_hour, &tm_time->tm_min,
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&end) >= 4) {
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/* Adjust dates from 1-12 to 0-11 */
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/* Adjust month from 1-12 to 0-11 */
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tm_time->tm_mon -= 1;
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} else if (sscanf(date_str, "%u.%u.%u-%u:%u%c", &tm_time->tm_year,
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} else
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/* yyyy.mm.dd-HH:MM */
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if (sscanf(date_str, "%u.%u.%u-%u:%u%c", &tm_time->tm_year,
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&tm_time->tm_mon, &tm_time->tm_mday,
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&tm_time->tm_hour, &tm_time->tm_min,
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&end) >= 5) {
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tm_time->tm_year -= 1900; /* Adjust years */
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tm_time->tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
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} else if (sscanf(date_str, "%u-%u-%u %u:%u%c", &tm_time->tm_year,
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tm_time->tm_mon -= 1; /* Adjust month from 1-12 to 0-11 */
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} else
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/* yyyy-mm-dd HH:MM */
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if (sscanf(date_str, "%u-%u-%u %u:%u%c", &tm_time->tm_year,
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&tm_time->tm_mon, &tm_time->tm_mday,
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&tm_time->tm_hour, &tm_time->tm_min,
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&end) >= 5) {
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tm_time->tm_year -= 1900; /* Adjust years */
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tm_time->tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
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//TODO: coreutils 6.9 also accepts "YYYY-MM-DD HH" (no minutes)
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tm_time->tm_mon -= 1; /* Adjust month from 1-12 to 0-11 */
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//TODO: coreutils 6.9 also accepts "yyyy-mm-dd HH" (no minutes)
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} else {
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bb_error_msg_and_die(bb_msg_invalid_date, date_str);
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}
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if (end == ':') {
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/* xxx:SS */
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if (sscanf(last_colon + 1, "%u%c", &tm_time->tm_sec, &end) == 1)
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end = '\0';
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/* else end != NUL and we error out */
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}
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} else {
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if (sscanf(date_str, "%2u%2u%2u%2u%u%c", &tm_time->tm_mon,
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&tm_time->tm_mday, &tm_time->tm_hour, &tm_time->tm_min,
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&tm_time->tm_year, &end) < 4)
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/* Googled the following on an old date manpage:
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*
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* The canonical representation for setting the date/time is:
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* cc Century (either 19 or 20)
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* yy Year in abbreviated form (e.g. 89, 06)
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* mm Numeric month, a number from 1 to 12
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* dd Day, a number from 1 to 31
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* HH Hour, a number from 0 to 23
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* MM Minutes, a number from 0 to 59
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* ss Seconds, a number from 0 to 61 (with leap seconds)
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* Everything but the minutes is optional
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*
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* This coincides with the format of "touch -t TIME"
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*/
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int len = strchrnul(date_str, '.') - date_str;
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/* MM[.SS] */
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if (len == 2 && sscanf(date_str, "%2u%2u%2u%2u%2u%c" + 12,
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&tm_time->tm_min,
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&end) >= 1) {
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} else
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/* HHMM[.SS] */
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if (len == 4 && sscanf(date_str, "%2u%2u%2u%2u%2u%c" + 9,
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&tm_time->tm_hour,
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&tm_time->tm_min,
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&end) >= 2) {
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} else
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/* ddHHMM[.SS] */
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if (len == 6 && sscanf(date_str, "%2u%2u%2u%2u%2u%c" + 6,
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&tm_time->tm_mday,
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&tm_time->tm_hour,
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&tm_time->tm_min,
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&end) >= 3) {
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} else
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/* mmddHHMM[.SS] */
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if (len == 8 && sscanf(date_str, "%2u%2u%2u%2u%2u%c" + 3,
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&tm_time->tm_mon,
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&tm_time->tm_mday,
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&tm_time->tm_hour,
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&tm_time->tm_min,
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&end) >= 4) {
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/* Adjust month from 1-12 to 0-11 */
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tm_time->tm_mon -= 1;
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} else
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/* yymmddHHMM[.SS] */
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if (len == 10 && sscanf(date_str, "%2u%2u%2u%2u%2u%c",
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&tm_time->tm_year,
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&tm_time->tm_mon,
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&tm_time->tm_mday,
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&tm_time->tm_hour,
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&tm_time->tm_min,
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&end) >= 5) {
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/* Adjust month from 1-12 to 0-11 */
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tm_time->tm_mon -= 1;
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} else
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/* yyyymmddHHMM[.SS] */
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if (len == 12 && sscanf(date_str, "%4u%2u%2u%2u%2u%c",
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&tm_time->tm_year,
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&tm_time->tm_mon,
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&tm_time->tm_mday,
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&tm_time->tm_hour,
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&tm_time->tm_min,
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&end) >= 5) {
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tm_time->tm_year -= 1900; /* Adjust years */
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tm_time->tm_mon -= 1; /* Adjust month from 1-12 to 0-11 */
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} else {
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bb_error_msg_and_die(bb_msg_invalid_date, date_str);
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/* correct for century - minor Y2K problem here? */
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if (tm_time->tm_year >= 1900) {
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tm_time->tm_year -= 1900;
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}
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/* adjust date */
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tm_time->tm_mon -= 1;
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if (end == '.') {
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/* xxx.SS */
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if (sscanf(strchr(date_str, '.') + 1, "%u%c",
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&tm_time->tm_sec, &end) == 1)
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end = '\0';
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