diff options
Diffstat (limited to 'toys/posix/date.c')
| -rw-r--r-- | toys/posix/date.c | 62 |
1 files changed, 41 insertions, 21 deletions
diff --git a/toys/posix/date.c b/toys/posix/date.c index 5cf8591a..293947d0 100644 --- a/toys/posix/date.c +++ b/toys/posix/date.c @@ -7,18 +7,19 @@ * Note: setting a 2 year date is 50 years back/forward from today, * not posix's hardwired magic dates. -USE_DATE(NEWTOY(date, "d:D:r:u(utc)[!dr]", TOYFLAG_BIN)) +USE_DATE(NEWTOY(date, "d:D:I(iso)(iso-8601):;r:u(utc)[!dr]", TOYFLAG_BIN)) config DATE bool "date" default y help - usage: date [-u] [-r FILE] [-d DATE] [+DISPLAY_FORMAT] [-D SET_FORMAT] [SET] + usage: date [-u] [-I RES] [-r FILE] [-d DATE] [+DISPLAY_FORMAT] [-D SET_FORMAT] [SET] Set/get the current date/time. With no SET shows the current date. -d Show DATE instead of current time (convert date format) -D +FORMAT for SET or -d (instead of MMDDhhmm[[CC]YY][.ss]) + -I RES ISO 8601 with RESolution d=date/h=hours/m=minutes/s=seconds/n=ns -r Use modification time of FILE instead of current date -u Use UTC instead of current timezone @@ -49,16 +50,16 @@ config DATE %U Week of year (0-53 start Sunday) %W Week of year (0-53 start Monday) %V Week of year (1-53 start Monday, week < 4 days not part of this year) - %F "%Y-%m-%d" %R "%H:%M" %T "%H:%M:%S" %z numeric timezone - %D "%m/%d/%y" %r "%I:%M:%S %p" %h "%b" %s unix epoch time - %x locale date %X locale time %c locale date/time + %F "%Y-%m-%d" %R "%H:%M" %T "%H:%M:%S" %z timezone (-0800) + %D "%m/%d/%y" %r "%I:%M:%S %p" %h "%b" %:z timezone (-08:00) + %x locale date %X locale time %c locale date/time %s unix epoch time */ #define FOR_date #include "toys.h" GLOBALS( - char *r, *D, *d; + char *r, *I, *D, *d; unsigned nano; ) @@ -88,28 +89,40 @@ static void parse_date(char *str, time_t *t) } } -// Print strftime plus %N escape(s). note: modifies fmt for %N +// Print strftime plus %N and %:z escape(s). Note: modifies fmt in those cases. static void puts_time(char *fmt, struct tm *tm) { - char *s, *snap; - long width = width; + char *s, *snap, *out; for (s = fmt;;s++) { + long n = 0; - // Find next %N or end + // Find next %N/%:z or end of format string. if (*(snap = s) == '%') { - width = isdigit(*++s) ? *(s++)-'0' : 9; - if (*s && *s != 'N') continue; + ++s; + if (*s == 'N') n = 9; + else if (isdigit(*s) && *(s+1) == 'N') n = *(s++)-'0'; + else if (*s == ':' && *(s+1) == 'z') s++, n++; + if (*s && *s != 'N' && (*s != 'z' || n == 0)) continue; } else if (*s) continue; - // Don't modify input string if no %N (default format is constant string). + // Only modify input string if needed (default format is constant string). if (*s) *snap = 0; - if (!strftime(toybuf, sizeof(toybuf)-10, fmt, tm)) - perror_exit("bad format '%s'", fmt); - if (*s) { - snap = toybuf+strlen(toybuf); - sprintf(snap, "%09u", TT.nano); - snap[width] = 0; + // Do we have any regular work for strftime to do? + if (!*fmt) out = toybuf; + else { + if (!strftime(toybuf, sizeof(toybuf)-10, fmt, tm)) + perror_exit("bad format '%s'", fmt); + out = toybuf+strlen(toybuf); + } + // Do we have any custom formatting to append to that? + if (*s == 'N') { + sprintf(out, "%09u", TT.nano); + out[n] = 0; + } else if (*s == 'z') { + strftime(out, 10, "%z", tm); + strcpy(out+4, out+3); + out[3] = ':'; } fputs(toybuf, stdout); if (!*s || !*(fmt = s+1)) break; @@ -123,6 +136,14 @@ void date_main(void) *tz = NULL; time_t t; + if (FLAG(I)) { + char *iso_formats[] = {"%F","%FT%H%:z","%FT%R%:z","%FT%T%:z","%FT%T,%N%:z"}; + int i = stridx("dhmsn", *TT.I ? *TT.I : 'd'); + + if (i<0) help_exit("bad -I: %s", TT.I); + format_string = xstrdup(iso_formats[i]); + } + if (FLAG(u)) { tz = getenv("TZ"); setenv("TZ", "UTC", 1); @@ -173,6 +194,5 @@ void date_main(void) else unsetenv("TZ"); tzset(); } - - return; + if (CFG_TOYBOX_FREE && FLAG(I)) free(format_string); } |