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date: make it accept ISO date format. Fix help text.

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make testsuite actually test something useful.

function                                             old     new   delta
date_main                                           1094    1149     +55
This commit is contained in:
Denis Vlasenko
2008-04-25 02:14:07 +00:00
parent ad6cab1834
commit 4d89a8bd1d
3 changed files with 98 additions and 54 deletions
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104
coreutils/date.c
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@ -103,67 +103,67 @@ int date_main(int argc ATTRIBUTE_UNUSED, char **argv)
if (ENABLE_FEATURE_DATE_ISOFMT && (opt & DATE_OPT_HINT)) {
if (strptime(date_str, fmt_str2dt, &tm_time) == NULL)
bb_error_msg_and_die(bb_msg_invalid_date, date_str);
} else if (strchr(date_str, ':') != NULL) {
/* Parse input and assign appropriately to tm_time */
} else {
char end = '\0';
const char *last_colon = strrchr(date_str, ':');
if (sscanf(date_str, "%d:%d:%d", &tm_time.tm_hour, &tm_time.tm_min,
&tm_time.tm_sec) == 3) {
/* no adjustments needed */
} else if (sscanf(date_str, "%d:%d", &tm_time.tm_hour,
&tm_time.tm_min) == 2) {
/* no adjustments needed */
} else if (sscanf(date_str, "%d.%d-%d:%d:%d", &tm_time.tm_mon,
&tm_time.tm_mday, &tm_time.tm_hour,
&tm_time.tm_min, &tm_time.tm_sec) == 5) {
/* Adjust dates from 1-12 to 0-11 */
tm_time.tm_mon -= 1;
} else if (sscanf(date_str, "%d.%d-%d:%d", &tm_time.tm_mon,
&tm_time.tm_mday,
&tm_time.tm_hour, &tm_time.tm_min) == 4) {
/* Adjust dates from 1-12 to 0-11 */
tm_time.tm_mon -= 1;
} else if (sscanf(date_str, "%d.%d.%d-%d:%d:%d", &tm_time.tm_year,
if (last_colon != NULL) {
/* Parse input and assign appropriately to tm_time */
if (sscanf(date_str, "%u:%u%c",
&tm_time.tm_hour,
&tm_time.tm_min,
&end) >= 2) {
/* no adjustments needed */
} else if (sscanf(date_str, "%u.%u-%u:%u%c",
&tm_time.tm_mon, &tm_time.tm_mday,
&tm_time.tm_hour, &tm_time.tm_min,
&tm_time.tm_sec) == 6) {
tm_time.tm_year -= 1900; /* Adjust years */
tm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
} else if (sscanf(date_str, "%d.%d.%d-%d:%d", &tm_time.tm_year,
&end) >= 4) {
/* Adjust dates from 1-12 to 0-11 */
tm_time.tm_mon -= 1;
} else if (sscanf(date_str, "%u.%u.%u-%u:%u%c", &tm_time.tm_year,
&tm_time.tm_mon, &tm_time.tm_mday,
&tm_time.tm_hour, &tm_time.tm_min) == 5) {
tm_time.tm_year -= 1900; /* Adjust years */
tm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
} else {
bb_error_msg_and_die(bb_msg_invalid_date, date_str);
}
} else {
int nr;
char *cp;
nr = sscanf(date_str, "%2d%2d%2d%2d%d", &tm_time.tm_mon,
&tm_time.tm_mday, &tm_time.tm_hour, &tm_time.tm_min,
&tm_time.tm_year);
if (nr < 4 || nr > 5) {
bb_error_msg_and_die(bb_msg_invalid_date, date_str);
}
cp = strchr(date_str, '.');
if (cp) {
nr = sscanf(cp + 1, "%2d", &tm_time.tm_sec);
if (nr != 1) {
&tm_time.tm_hour, &tm_time.tm_min,
&end) >= 5) {
tm_time.tm_year -= 1900; /* Adjust years */
tm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
} else if (sscanf(date_str, "%u-%u-%u %u:%u%c", &tm_time.tm_year,
&tm_time.tm_mon, &tm_time.tm_mday,
&tm_time.tm_hour, &tm_time.tm_min,
&end) >= 5) {
tm_time.tm_year -= 1900; /* Adjust years */
tm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
//TODO: coreutils 6.9 also accepts "YYYY-MM-DD HH" (no minutes)
} else {
bb_error_msg_and_die(bb_msg_invalid_date, date_str);
}
if (end == ':') {
if (sscanf(last_colon + 1, "%u%c", &tm_time.tm_sec, &end) == 1)
end = '\0';
/* else end != NUL and we error out */
}
} else {
if (sscanf(date_str, "%2u%2u%2u%2u%u%c", &tm_time.tm_mon,
&tm_time.tm_mday, &tm_time.tm_hour, &tm_time.tm_min,
&tm_time.tm_year, &end) < 4)
bb_error_msg_and_die(bb_msg_invalid_date, date_str);
/* correct for century - minor Y2K problem here? */
if (tm_time.tm_year >= 1900) {
tm_time.tm_year -= 1900;
}
/* adjust date */
tm_time.tm_mon -= 1;
if (end == '.') {
if (sscanf(strchr(date_str, '.') + 1, "%u%c",
&tm_time.tm_sec, &end) == 1)
end = '\0';
/* else end != NUL and we error out */
}
}
/* correct for century - minor Y2K problem here? */
if (tm_time.tm_year >= 1900) {
tm_time.tm_year -= 1900;
if (end != '\0') {
bb_error_msg_and_die(bb_msg_invalid_date, date_str);
}
/* adjust date */
tm_time.tm_mon -= 1;
}
/* 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);