* iso-format handling added by Robert Griebl <griebl@gmx.de>
* bugfixes and cleanup by Bernhard Reutner-Fischer
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
/* This 'date' command supports only 2 time setting formats,
/* Input parsing code is always bulky - used heavy duty libc stuff as
much as possible, missed out a lot of bounds checking */
-/* 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
- */
+//applet:IF_DATE(APPLET(date, BB_DIR_BIN, BB_SUID_DROP))
//kbuild:lib-$(CONFIG_DATE) += date.o
//config: Enable option (-I) to output an ISO-8601 compliant
//config: date/time string.
//config:
+//config:# defaults to "no": stat's nanosecond field is a bit non-portable
//config:config FEATURE_DATE_NANO
//config: bool "Support %[num]N nanosecond format specifier"
//config: default n
-//config: depends on DATE
+//config: depends on DATE # syscall(__NR_clock_gettime)
+//config: select PLATFORM_LINUX
//config: help
//config: Support %[num]N format specifier. Adds ~250 bytes of code.
//config:
//config: the same format. With it on, 'date DATE' additionally supports
//config: MMDDhhmm[[YY]YY][.ss] format.
+/* 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
+ */
+
+//usage:#define date_trivial_usage
+//usage: "[OPTIONS] [+FMT] [TIME]"
+//usage:#define date_full_usage "\n\n"
+//usage: "Display time (using +FMT), or set time\n"
+//usage: IF_NOT_LONG_OPTS(
+//usage: "\n [-s] TIME Set time to TIME"
+//usage: "\n -u Work in UTC (don't convert to local time)"
+//usage: "\n -R Output RFC-2822 compliant date string"
+//usage: ) IF_LONG_OPTS(
+//usage: "\n [-s,--set] TIME Set time to TIME"
+//usage: "\n -u,--utc Work in UTC (don't convert to local time)"
+//usage: "\n -R,--rfc-2822 Output RFC-2822 compliant date string"
+//usage: )
+//usage: IF_FEATURE_DATE_ISOFMT(
+//usage: "\n -I[SPEC] Output ISO-8601 compliant date string"
+//usage: "\n SPEC='date' (default) for date only,"
+//usage: "\n 'hours', 'minutes', or 'seconds' for date and"
+//usage: "\n time to the indicated precision"
+//usage: )
+//usage: IF_NOT_LONG_OPTS(
+//usage: "\n -r FILE Display last modification time of FILE"
+//usage: "\n -d TIME Display TIME, not 'now'"
+//usage: ) IF_LONG_OPTS(
+//usage: "\n -r,--reference FILE Display last modification time of FILE"
+//usage: "\n -d,--date TIME Display TIME, not 'now'"
+//usage: )
+//usage: IF_FEATURE_DATE_ISOFMT(
+//usage: "\n -D FMT Use FMT for -d TIME conversion"
+//usage: )
+//usage: "\n"
+//usage: "\nRecognized TIME formats:"
+//usage: "\n hh:mm[:ss]"
+//usage: "\n [YYYY.]MM.DD-hh:mm[:ss]"
+//usage: "\n YYYY-MM-DD hh:mm[:ss]"
+//usage: "\n [[[[[YY]YY]MM]DD]hh]mm[.ss]"
+//usage: IF_FEATURE_DATE_COMPAT(
+//usage: "\n 'date TIME' form accepts MMDDhhmm[[YY]YY][.ss] instead"
+//usage: )
+//usage:
+//usage:#define date_example_usage
+//usage: "$ date\n"
+//usage: "Wed Apr 12 18:52:41 MDT 2000\n"
+
#include "libbb.h"
+#if ENABLE_FEATURE_DATE_NANO
+# include <sys/syscall.h>
+#endif
enum {
OPT_RFC2822 = (1 << 0), /* R */
ts.tv_sec = statbuf.st_mtime;
#if ENABLE_FEATURE_DATE_NANO
ts.tv_nsec = statbuf.st_mtim.tv_nsec;
+ /* Some toolchains use .st_mtimensec instead of st_mtim.tv_nsec.
+ * If you need #define _SVID_SOURCE 1 to enable st_mtim.tv_nsec,
+ * drop a mail to project mailing list please
+ */
#endif
} else {
#if ENABLE_FEATURE_DATE_NANO
- clock_gettime(CLOCK_REALTIME, &ts);
+ /* libc has incredibly messy way of doing this,
+ * typically requiring -lrt. We just skip all this mess */
+ syscall(__NR_clock_gettime, CLOCK_REALTIME, &ts);
#else
- time(&ts.tv_nsec);
+ time(&ts.tv_sec);
#endif
}
localtime_r(&ts.tv_sec, &tm_time);
}
/* Correct any day of week and day of year etc. fields */
- tm_time.tm_isdst = -1; /* Be sure to recheck dst */
+ /* Be sure to recheck dst (but not if date is time_t format) */
+ if (date_str[0] != '@')
+ tm_time.tm_isdst = -1;
ts.tv_sec = validate_tm_time(date_str, &tm_time);
maybe_set_utc(opt);
scale = 1;
pres = 9;
if (n) {
- pres = xatoi_u(p);
+ pres = xatoi_positive(p);
if (pres == 0)
pres = 9;
m = 9 - pres;
projects / oweals / busybox.git / blobdiff