From 73b71f381d24218cf6368364be723a7b5c9aeda9 Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Sat, 18 Jul 2009 03:40:35 +0200 Subject: [PATCH] date: factor out date parsing (in preparation for touch -d) function old new delta parse_datestr - 391 +391 sha512_process_block128 1283 1310 +27 buffer_fill_and_print 179 196 +17 nexpr 826 840 +14 unzip_main 1931 1939 +8 popstring 134 140 +6 qrealloc 33 36 +3 builtin_umask 121 123 +2 evalvar 1365 1363 -2 changepath 194 192 -2 do_compress 1698 1688 -10 hwclock_main 340 329 -11 cmdputs 414 402 -12 identify 4343 4329 -14 date_main 1186 687 -499 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 7/7 up/down: 468/-550) Total: -82 bytes Signed-off-by: Denys Vlasenko --- coreutils/date.c | 134 ++++++++++++++++------------------------ include/libbb.h | 3 + libbb/time.c | 64 ++++++++++++++++++- testsuite/bunzip2.tests | 4 +- util-linux/hwclock.c | 5 +- 5 files changed, 126 insertions(+), 84 deletions(-) diff --git a/coreutils/date.c b/coreutils/date.c index 3a536dbe5..7f2a5b351 100644 --- a/coreutils/date.c +++ b/coreutils/date.c @@ -10,8 +10,6 @@ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. */ -#include "libbb.h" - /* This 'date' command supports only 2 time setting formats, all the GNU strftime stuff (its in libc, lets use it), setting time using UTC and displaying it, as well as @@ -23,18 +21,51 @@ /* Default input handling to save surprising some people */ +/* GNU coreutils 6.9 man page: + * date [OPTION]... [+FORMAT] + * date [-u|--utc|--universal] [MMDDhhmm[[CC]YY][.ss]] + * -d, --date=STRING + * display time described by STRING, not `now' + * -f, --file=DATEFILE + * like --date once for each line of DATEFILE + * -r, --reference=FILE + * display the last modification time of FILE + * -R, --rfc-2822 + * output date and time in RFC 2822 format. + * Example: Mon, 07 Aug 2006 12:34:56 -0600 + * --rfc-3339=TIMESPEC + * output date and time in RFC 3339 format. + * TIMESPEC='date', 'seconds', or 'ns' + * Date and time components are separated by a single space: + * 2006-08-07 12:34:56-06:00 + * -s, --set=STRING + * set time described by STRING + * -u, --utc, --universal + * print or set Coordinated Universal Time + * + * Busybox: + * long options are not supported + * -f is not supported + * -I seems to roughly match --rfc-3339, but -I has _optional_ param + * (thus "-I seconds" doesn't work, only "-Iseconds"), + * and does not support -Ins + * -D FMT is a bbox extension for _input_ conversion of -d DATE + */ +#include "libbb.h" -#define DATE_OPT_RFC2822 0x01 -#define DATE_OPT_SET 0x02 -#define DATE_OPT_UTC 0x04 -#define DATE_OPT_DATE 0x08 -#define DATE_OPT_REFERENCE 0x10 -#define DATE_OPT_TIMESPEC 0x20 -#define DATE_OPT_HINT 0x40 +enum { + OPT_RFC2822 = (1 << 0), /* R */ + OPT_SET = (1 << 1), /* s */ + OPT_UTC = (1 << 2), /* u */ + OPT_DATE = (1 << 3), /* d */ + OPT_REFERENCE = (1 << 4), /* r */ + OPT_TIMESPEC = (1 << 5) * ENABLE_FEATURE_DATE_ISOFMT, /* I */ + OPT_HINT = (1 << 6) * ENABLE_FEATURE_DATE_ISOFMT, /* D */ +}; static void maybe_set_utc(int opt) { - if (opt & DATE_OPT_UTC) + if (opt & OPT_UTC) putenv((char*)"TZ=UTC0"); } @@ -60,7 +91,7 @@ int date_main(int argc UNUSED_PARAM, char **argv) argv += optind; maybe_set_utc(opt); - if (ENABLE_FEATURE_DATE_ISOFMT && (opt & DATE_OPT_TIMESPEC)) { + if (ENABLE_FEATURE_DATE_ISOFMT && (opt & OPT_TIMESPEC)) { ifmt = 0; /* default is date */ if (isofmt_arg) { static const char isoformats[] ALIGN1 = @@ -76,8 +107,8 @@ int date_main(int argc UNUSED_PARAM, char **argv) fmt_dt2str = &argv[0][1]; /* Skip over the '+' */ argv++; } - if (!(opt & (DATE_OPT_SET | DATE_OPT_DATE))) { - opt |= DATE_OPT_SET; + if (!(opt & (OPT_SET | OPT_DATE))) { + opt |= OPT_SET; date_str = argv[0]; /* can be NULL */ if (date_str) argv++; @@ -88,13 +119,14 @@ int date_main(int argc UNUSED_PARAM, char **argv) /* Now we have parsed all the information except the date format which depends on whether the clock is being set or read */ - if (opt & DATE_OPT_REFERENCE) { + if (opt & OPT_REFERENCE) { struct stat statbuf; xstat(filename, &statbuf); tm = statbuf.st_mtime; - } else + } else { time(&tm); - memcpy(&tm_time, localtime(&tm), sizeof(tm_time)); + } + localtime_r(&tm, &tm_time); /* If date string is given, update tm_time, and maybe set date */ if (date_str != NULL) { @@ -104,72 +136,14 @@ int date_main(int argc UNUSED_PARAM, char **argv) tm_time.tm_hour = 0; /* Process any date input to UNIX time since 1 Jan 1970 */ - if (ENABLE_FEATURE_DATE_ISOFMT && (opt & DATE_OPT_HINT)) { + 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 { - char end = '\0'; - const char *last_colon = strrchr(date_str, ':'); - - 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, - &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, - &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 */ - } - } - if (end != '\0') { - bb_error_msg_and_die(bb_msg_invalid_date, date_str); - } + 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_time.tm_isdst = -1; /* Be sure to recheck dst */ tm = mktime(&tm_time); if (tm < 0) { bb_error_msg_and_die(bb_msg_invalid_date, date_str); @@ -177,7 +151,7 @@ int date_main(int argc UNUSED_PARAM, char **argv) maybe_set_utc(opt); /* if setting time, set it */ - if ((opt & DATE_OPT_SET) && stime(&tm) < 0) { + if ((opt & OPT_SET) && stime(&tm) < 0) { bb_perror_msg("cannot set date"); } } @@ -207,9 +181,9 @@ int date_main(int argc UNUSED_PARAM, char **argv) } format_utc: fmt_dt2str[i++] = '%'; - fmt_dt2str[i] = (opt & DATE_OPT_UTC) ? 'Z' : 'z'; + fmt_dt2str[i] = (opt & OPT_UTC) ? 'Z' : 'z'; } - } else if (opt & DATE_OPT_RFC2822) { + } else if (opt & OPT_RFC2822) { /* Undo busybox.c for date -R */ if (ENABLE_LOCALE_SUPPORT) setlocale(LC_TIME, "C"); diff --git a/include/libbb.h b/include/libbb.h index 50b884188..9de52331b 100644 --- a/include/libbb.h +++ b/include/libbb.h @@ -437,6 +437,9 @@ struct BUG_too_small { }; +void parse_datestr(const char *date_str, struct tm *tm_time) FAST_FUNC; + + int xsocket(int domain, int type, int protocol) FAST_FUNC; void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen) FAST_FUNC; void xlisten(int s, int backlog) FAST_FUNC; diff --git a/libbb/time.c b/libbb/time.c index 850ac1542..30b760f71 100644 --- a/libbb/time.c +++ b/libbb/time.c @@ -6,9 +6,71 @@ * * Licensed under GPL version 2, see file LICENSE in this tarball for details. */ - #include "libbb.h" +void FAST_FUNC parse_datestr(const char *date_str, struct tm *tm_time) +{ + char end = '\0'; + const char *last_colon = strrchr(date_str, ':'); + + 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, + &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, + &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 */ + } + } + if (end != '\0') { + bb_error_msg_and_die(bb_msg_invalid_date, date_str); + } +} + #if ENABLE_MONOTONIC_SYSCALL #include diff --git a/testsuite/bunzip2.tests b/testsuite/bunzip2.tests index 3105ba4ac..a7555aca9 100755 --- a/testsuite/bunzip2.tests +++ b/testsuite/bunzip2.tests @@ -470,9 +470,9 @@ prep() { check() { eval $2 >t_actual 2>&1 if $ECHO -ne "$expected" | cmp - t_actual; then - echo "$1: PASS" + echo "PASS: $1" else - echo "$1: FAIL" + echo "FAIL: $1" fi } diff --git a/util-linux/hwclock.c b/util-linux/hwclock.c index 3d28364e9..2cdb186c5 100644 --- a/util-linux/hwclock.c +++ b/util-linux/hwclock.c @@ -36,7 +36,10 @@ static void write_rtc(time_t t, int utc) struct tm tm; int rtc = rtc_xopen(&rtcname, O_WRONLY); - tm = *(utc ? gmtime(&t) : localtime(&t)); + if (utc) + gmtime_r(&t, &tm); + else + localtime_r(&t, &tm); tm.tm_isdst = 0; xioctl(rtc, RTC_SET_TIME, &tm); -- 2.25.1