Time

Time._load(string) → time Link

Unmarshal a dumped Time object.

Source: show

static VALUE
time_load(VALUE klass, VALUE str)
{
    VALUE time = time_s_alloc(klass);

    time_mload(time, str);
    return time;
}

Time.at(time) → time Time.at(seconds_with_frac) → time Time.at(seconds, microseconds_with_frac) → time Link

Creates a new time object with the value given by time, the given number of seconds_with_frac, or seconds and microseconds_with_frac from the Epoch. seconds_with_frac and microseconds_with_frac can be Integer, Float, Rational, or other Numeric. non-portable feature allows the offset to be negative on some systems.

Time.at(0)            #=> 1969-12-31 18:00:00 -0600
Time.at(Time.at(0))   #=> 1969-12-31 18:00:00 -0600
Time.at(946702800)    #=> 1999-12-31 23:00:00 -0600
Time.at(-284061600)   #=> 1960-12-31 00:00:00 -0600
Time.at(946684800.2).usec #=> 200000
Time.at(946684800, 123456.789).nsec #=> 123456789

Source: show

static VALUE
time_s_at(int argc, VALUE *argv, VALUE klass)
{
    VALUE time, t;
    wideval_t timew;

    if (rb_scan_args(argc, argv, "11", &time, &t) == 2) {
        time = num_exact(time);
        t = num_exact(t);
        timew = wadd(rb_time_magnify(v2w(time)), wmulquoll(v2w(t), TIME_SCALE, 1000000));
        t = time_new_timew(klass, timew);
    }
    else if (IsTimeval(time)) {
        struct time_object *tobj, *tobj2;
        GetTimeval(time, tobj);
        t = time_new_timew(klass, tobj->timew);
        GetTimeval(t, tobj2);
        TIME_COPY_GMT(tobj2, tobj);
    }
    else {
        timew = rb_time_magnify(v2w(num_exact(time)));
        t = time_new_timew(klass, timew);
    }

    return t;
}

Time.gm(year) → time Time.gm(year, month) → time Time.gm(year, month, day) → time Time.gm(year, month, day, hour) → time Time.gm(year, month, day, hour, min) → time Time.gm(year, month, day, hour, min, sec_with_frac) → time Time.gm(year, month, day, hour, min, sec, usec_with_frac) → time Time.gm(sec, min, hour, day, month, year, wday, yday, isdst, tz) → time Link

Creates a time based on given values, interpreted as UTC (GMT). The year must be specified. Other values default to the minimum value for that field (and may be nil or omitted). Months may be specified by numbers from 1 to 12, or by the three-letter English month names. Hours are specified on a 24-hour clock (0..23). Raises an ArgumentError if any values are out of range. Will also accept ten arguments in the order output by Time#to_a. sec_with_frac and usec_with_frac can have a fractional part.

Time.utc(2000,"jan",1,20,15,1)  #=> 2000-01-01 20:15:01 UTC
Time.gm(2000,"jan",1,20,15,1)   #=> 2000-01-01 20:15:01 UTC

Source: show

static VALUE
time_s_mkutc(int argc, VALUE *argv, VALUE klass)
{
    return time_utc_or_local(argc, argv, TRUE, klass);
}

json_create(object) Link

Deserializes JSON string by converting time since epoch to Time

Source: show | on GitHub

# File ../ruby/ext/json/lib/json/add/core.rb, line 35
def self.json_create(object)
  if usec = object.delete('u') # used to be tv_usec -> tv_nsec
    object['n'] = usec * 1000
  end
  if instance_methods.include?(:tv_nsec)
    at(object['s'], Rational(object['n'], 1000))
  else
    at(object['s'], object['n'] / 1000)
  end
end

Time.local(year) → time Time.local(year, month) → time Time.local(year, month, day) → time Time.local(year, month, day, hour) → time Time.local(year, month, day, hour, min) → time Time.local(year, month, day, hour, min, sec_with_frac) → time Time.local(year, month, day, hour, min, sec, usec_with_frac) → time Time.local(sec, min, hour, day, month, year, wday, yday, isdst, tz) → time Link

Same as Time::gm, but interprets the values in the local time zone.

Time.local(2000,"jan",1,20,15,1)   #=> 2000-01-01 20:15:01 -0600

Source: show

static VALUE
time_s_mktime(int argc, VALUE *argv, VALUE klass)
{
    return time_utc_or_local(argc, argv, FALSE, klass);
}

Time.mktime(year) → time Time.mktime(year, month) → time Time.mktime(year, month, day) → time Time.mktime(year, month, day, hour) → time Time.mktime(year, month, day, hour, min) → time Time.mktime(year, month, day, hour, min, sec_with_frac) → time Time.mktime(year, month, day, hour, min, sec, usec_with_frac) → time Time.mktime(sec, min, hour, day, month, year, wday, yday, isdst, tz) → time Link

Same as Time::gm, but interprets the values in the local time zone.

Time.local(2000,"jan",1,20,15,1)   #=> 2000-01-01 20:15:01 -0600

Source: show

static VALUE
time_s_mktime(int argc, VALUE *argv, VALUE klass)
{
    return time_utc_or_local(argc, argv, FALSE, klass);
}

Time.new → time Time.new(year, month=nil, day=nil, hour=nil, min=nil, sec=nil, utc_offset=nil) → time Link

Returns a Time object.

It is initialized to the current system time if no argument. Note: The object created will be created using the resolution available on your system clock, and so may include fractional seconds.

If one or more arguments specified, the time is initialized to the specified time. sec may have fraction if it is a rational.

utc_offset is the offset from UTC. It is a string such as “+09:00” or a number of seconds such as 32400.

a = Time.new      #=> 2007-11-19 07:50:02 -0600
b = Time.new      #=> 2007-11-19 07:50:02 -0600
a == b            #=> false
"%.6f" % a.to_f   #=> "1195480202.282373"
"%.6f" % b.to_f   #=> "1195480202.283415"

Time.new(2008,6,21, 13,30,0, "+09:00") #=> 2008-06-21 13:30:00 +0900

# A trip for RubyConf 2007
t1 = Time.new(2007,11,1,15,25,0, "+09:00") # JST (Narita)
t2 = Time.new(2007,11,1,12, 5,0, "-05:00") # CDT (Minneapolis)
t3 = Time.new(2007,11,1,13,25,0, "-05:00") # CDT (Minneapolis)
t4 = Time.new(2007,11,1,16,53,0, "-04:00") # EDT (Charlotte)
t5 = Time.new(2007,11,5, 9,24,0, "-05:00") # EST (Charlotte)
t6 = Time.new(2007,11,5,11,21,0, "-05:00") # EST (Detroit)
t7 = Time.new(2007,11,5,13,45,0, "-05:00") # EST (Detroit)
t8 = Time.new(2007,11,6,17,10,0, "+09:00") # JST (Narita)
p((t2-t1)/3600.0)                          #=> 10.666666666666666
p((t4-t3)/3600.0)                          #=> 2.466666666666667
p((t6-t5)/3600.0)                          #=> 1.95
p((t8-t7)/3600.0)                          #=> 13.416666666666666

Source: show

static VALUE
time_init(int argc, VALUE *argv, VALUE time)
{
    if (argc == 0)
        return time_init_0(time);
    else
        return time_init_1(argc, argv, time);
}

now() Link

Synonym for Time.new. Returns a Time object initialized to the current system time.

Source: show

static VALUE
time_s_now(VALUE klass)
{
    return rb_class_new_instance(0, NULL, klass);
}

Time.utc(year) → time Time.utc(year, month) → time Time.utc(year, month, day) → time Time.utc(year, month, day, hour) → time Time.utc(year, month, day, hour, min) → time Time.utc(year, month, day, hour, min, sec_with_frac) → time Time.utc(year, month, day, hour, min, sec, usec_with_frac) → time Time.utc(sec, min, hour, day, month, year, wday, yday, isdst, tz) → time Link

Creates a time based on given values, interpreted as UTC (GMT). The year must be specified. Other values default to the minimum value for that field (and may be nil or omitted). Months may be specified by numbers from 1 to 12, or by the three-letter English month names. Hours are specified on a 24-hour clock (0..23). Raises an ArgumentError if any values are out of range. Will also accept ten arguments in the order output by Time#to_a. sec_with_frac and usec_with_frac can have a fractional part.

Time.utc(2000,"jan",1,20,15,1)  #=> 2000-01-01 20:15:01 UTC
Time.gm(2000,"jan",1,20,15,1)   #=> 2000-01-01 20:15:01 UTC

Source: show

static VALUE
time_s_mkutc(int argc, VALUE *argv, VALUE klass)
{
    return time_utc_or_local(argc, argv, TRUE, klass);
}

time + numeric → time Link

Addition—Adds some number of seconds (possibly fractional) to time and returns that value as a new time.

t = Time.now         #=> 2007-11-19 08:22:21 -0600
t + (60 * 60 * 24)   #=> 2007-11-20 08:22:21 -0600

Source: show

static VALUE
time_plus(VALUE time1, VALUE time2)
{
    struct time_object *tobj;
    GetTimeval(time1, tobj);

    if (IsTimeval(time2)) {
        rb_raise(rb_eTypeError, "time + time?");
    }
    return time_add(tobj, time2, 1);
}

time - other_time → float time - numeric → time Link

Difference—Returns a new time that represents the difference between two times, or subtracts the given number of seconds in numeric from time.

t = Time.now       #=> 2007-11-19 08:23:10 -0600
t2 = t + 2592000   #=> 2007-12-19 08:23:10 -0600
t2 - t             #=> 2592000.0
t2 - 2592000       #=> 2007-11-19 08:23:10 -0600

Source: show

static VALUE
time_minus(VALUE time1, VALUE time2)
{
    struct time_object *tobj;

    GetTimeval(time1, tobj);
    if (IsTimeval(time2)) {
        struct time_object *tobj2;

        GetTimeval(time2, tobj2);
        return rb_Float(rb_time_unmagnify_to_float(wsub(tobj->timew, tobj2->timew)));
    }
    return time_add(tobj, time2, -1);
}

<=>(other) Link

Comparison—Compares time with other_time.

t = Time.now       #=> 2007-11-19 08:12:12 -0600
t2 = t + 2592000   #=> 2007-12-19 08:12:12 -0600
t <=> t2           #=> -1
t2 <=> t           #=> 1

t = Time.now       #=> 2007-11-19 08:13:38 -0600
t2 = t + 0.1       #=> 2007-11-19 08:13:38 -0600
t.nsec             #=> 98222999
t2.nsec            #=> 198222999
t <=> t2           #=> -1
t2 <=> t           #=> 1
t <=> t            #=> 0

Also aliased as: rake_original_time_compare

Source: show | on GitHub

# File ../ruby/lib/rake/ext/time.rb, line 6
def <=>(other)
  if Rake::EarlyTime === other
    - other.<=>(self)
  else
    rake_original_time_compare(other)
  end
end

time._dump → string Link

Dump time for marshaling.

Source: show

static VALUE
time_dump(int argc, VALUE *argv, VALUE time)
{
    VALUE str;

    rb_scan_args(argc, argv, "01", 0);
    str = time_mdump(time);

    return str;
}

as_json(*) Link

Returns a hash, that will be turned into a JSON object and represent this object.

Source: show | on GitHub

# File ../ruby/ext/json/lib/json/add/core.rb, line 48
def as_json(*)
  nanoseconds = [ tv_usec * 1000 ]
  respond_to?(:tv_nsec) and nanoseconds << tv_nsec
  nanoseconds = nanoseconds.max
  {
    JSON.create_id => self.class.name,
    's'            => tv_sec,
    'n'            => nanoseconds,
  }
end

time.asctime → string Link

Returns a canonical string representation of time.

Time.now.asctime   #=> "Wed Apr  9 08:56:03 2003"

Source: show

static VALUE
time_asctime(VALUE time)
{
    return strftimev("%a %b %e %T %Y", time);
}

time.ctime → string Link

Returns a canonical string representation of time.

Time.now.asctime   #=> "Wed Apr  9 08:56:03 2003"

Source: show

static VALUE
time_asctime(VALUE time)
{
    return strftimev("%a %b %e %T %Y", time);
}

time.day → fixnum Link

Returns the day of the month (1..n) for time.

t = Time.now   #=> 2007-11-19 08:27:03 -0600
t.day          #=> 19
t.mday         #=> 19

Source: show

static VALUE
time_mday(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    MAKE_TM(time, tobj);
    return INT2FIX(tobj->vtm.mday);
}

time.dst? → true or false Link

Returns true if time occurs during Daylight Saving Time in its time zone.

# CST6CDT:
  Time.local(2000, 1, 1).zone    #=> "CST"
  Time.local(2000, 1, 1).isdst   #=> false
  Time.local(2000, 1, 1).dst?    #=> false
  Time.local(2000, 7, 1).zone    #=> "CDT"
  Time.local(2000, 7, 1).isdst   #=> true
  Time.local(2000, 7, 1).dst?    #=> true

# Asia/Tokyo:
  Time.local(2000, 1, 1).zone    #=> "JST"
  Time.local(2000, 1, 1).isdst   #=> false
  Time.local(2000, 1, 1).dst?    #=> false
  Time.local(2000, 7, 1).zone    #=> "JST"
  Time.local(2000, 7, 1).isdst   #=> false
  Time.local(2000, 7, 1).dst?    #=> false

Source: show

static VALUE
time_isdst(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    MAKE_TM(time, tobj);
    return tobj->vtm.isdst ? Qtrue : Qfalse;
}

time.eql?(other_time) Link

Return true if time and other_time are both Time objects with the same seconds and fractional seconds.

Source: show

static VALUE
time_eql(VALUE time1, VALUE time2)
{
    struct time_object *tobj1, *tobj2;

    GetTimeval(time1, tobj1);
    if (IsTimeval(time2)) {
        GetTimeval(time2, tobj2);
        return rb_equal(w2v(tobj1->timew), w2v(tobj2->timew));
    }
    return Qfalse;
}

time.friday? → true or false Link

Returns true if time represents Friday.

t = Time.local(1987, 12, 18)     #=> 1987-12-18 00:00:00 -0600
t.friday?                        #=> true

Source: show

static VALUE
time_friday(VALUE time)
{
    wday_p(5);
}

time.getgm → new_time Link

Returns a new new_time object representing time in UTC.

t = Time.local(2000,1,1,20,15,1)   #=> 2000-01-01 20:15:01 -0600
t.gmt?                             #=> false
y = t.getgm                        #=> 2000-01-02 02:15:01 UTC
y.gmt?                             #=> true
t == y                             #=> true

Source: show

static VALUE
time_getgmtime(VALUE time)
{
    return time_gmtime(time_dup(time));
}

time.getlocal → new_time time.getlocal(utc_offset) → new_time Link

Returns a new new_time object representing time in local time (using the local time zone in effect for this process).

If utc_offset is given, it is used instead of the local time.

t = Time.utc(2000,1,1,20,15,1)  #=> 2000-01-01 20:15:01 UTC
t.utc?                          #=> true

l = t.getlocal                  #=> 2000-01-01 14:15:01 -0600
l.utc?                          #=> false
t == l                          #=> true

j = t.getlocal("+09:00")        #=> 2000-01-02 05:15:01 +0900
j.utc?                          #=> false
t == j                          #=> true

Source: show

static VALUE
time_getlocaltime(int argc, VALUE *argv, VALUE time)
{
    VALUE off;
    rb_scan_args(argc, argv, "01", &off);

    if (!NIL_P(off)) {
        off = utc_offset_arg(off);
        validate_utc_offset(off);

        time = time_dup(time);
        time_set_utc_offset(time, off);
        return time_fixoff(time);
    }

    return time_localtime(time_dup(time));
}

time.getutc → new_time Link

Returns a new new_time object representing time in UTC.

t = Time.local(2000,1,1,20,15,1)   #=> 2000-01-01 20:15:01 -0600
t.gmt?                             #=> false
y = t.getgm                        #=> 2000-01-02 02:15:01 UTC
y.gmt?                             #=> true
t == y                             #=> true

Source: show

static VALUE
time_getgmtime(VALUE time)
{
    return time_gmtime(time_dup(time));
}

time.gmt? → true or false Link

Returns true if time represents a time in UTC (GMT).

t = Time.now                        #=> 2007-11-19 08:15:23 -0600
t.utc?                              #=> false
t = Time.gm(2000,"jan",1,20,15,1)   #=> 2000-01-01 20:15:01 UTC
t.utc?                              #=> true

t = Time.now                        #=> 2007-11-19 08:16:03 -0600
t.gmt?                              #=> false
t = Time.gm(2000,1,1,20,15,1)       #=> 2000-01-01 20:15:01 UTC
t.gmt?                              #=> true

Source: show

static VALUE
time_utc_p(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    if (TIME_UTC_P(tobj)) return Qtrue;
    return Qfalse;
}

time.gmt_offset → fixnum Link

Returns the offset in seconds between the timezone of time and UTC.

t = Time.gm(2000,1,1,20,15,1)   #=> 2000-01-01 20:15:01 UTC
t.gmt_offset                    #=> 0
l = t.getlocal                  #=> 2000-01-01 14:15:01 -0600
l.gmt_offset                    #=> -21600

Source: show

static VALUE
time_utc_offset(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    MAKE_TM(time, tobj);

    if (TIME_UTC_P(tobj)) {
        return INT2FIX(0);
    }
    else {
        return tobj->vtm.utc_offset;
    }
}

time.gmtime → time Link

Converts time to UTC (GMT), modifying the receiver.

t = Time.now   #=> 2007-11-19 08:18:31 -0600
t.gmt?         #=> false
t.gmtime       #=> 2007-11-19 14:18:31 UTC
t.gmt?         #=> true

t = Time.now   #=> 2007-11-19 08:18:51 -0600
t.utc?         #=> false
t.utc          #=> 2007-11-19 14:18:51 UTC
t.utc?         #=> true

Source: show

static VALUE
time_gmtime(VALUE time)
{
    struct time_object *tobj;
    struct vtm vtm;

    GetTimeval(time, tobj);
    if (TIME_UTC_P(tobj)) {
        if (tobj->tm_got)
            return time;
    }
    else {
        time_modify(time);
    }

    if (!gmtimew(tobj->timew, &vtm))
        rb_raise(rb_eArgError, "gmtime error");
    tobj->vtm = vtm;

    tobj->tm_got = 1;
    TIME_SET_UTC(tobj);
    return time;
}

time.gmtoff → fixnum Link

Returns the offset in seconds between the timezone of time and UTC.

t = Time.gm(2000,1,1,20,15,1)   #=> 2000-01-01 20:15:01 UTC
t.gmt_offset                    #=> 0
l = t.getlocal                  #=> 2000-01-01 14:15:01 -0600
l.gmt_offset                    #=> -21600

Source: show

static VALUE
time_utc_offset(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    MAKE_TM(time, tobj);

    if (TIME_UTC_P(tobj)) {
        return INT2FIX(0);
    }
    else {
        return tobj->vtm.utc_offset;
    }
}

time.hash → fixnum Link

Return a hash code for this time object.

Source: show

static VALUE
time_hash(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    return rb_hash(w2v(tobj->timew));
}

time.hour → fixnum Link

Returns the hour of the day (0..23) for time.

t = Time.now   #=> 2007-11-19 08:26:20 -0600
t.hour         #=> 8

Source: show

static VALUE
time_hour(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    MAKE_TM(time, tobj);
    return INT2FIX(tobj->vtm.hour);
}

httpdate(date) Link

Parses date as HTTP-date defined by RFC 2616 and converts it to a Time object.

ArgumentError is raised if date is not compliant with RFC 2616 or Time class cannot represent specified date.

See httpdate for more information on this format.

time library should be required to use this method as follows.

require 'time'

Source: show | on GitHub

# File ../ruby/lib/time.rb, line 369
def httpdate(date)
  if /\A\s*
      (?:Mon|Tue|Wed|Thu|Fri|Sat|Sun),\x20
      (\d{2})\x20
      (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\x20
      (\d{4})\x20
      (\d{2}):(\d{2}):(\d{2})\x20
      GMT
      \s*\z/ix =~ date
    self.rfc2822(date)
  elsif /\A\s*
         (?:Monday|Tuesday|Wednesday|Thursday|Friday|Saturday|Sunday),\x20
         (\d\d)-(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)-(\d\d)\x20
         (\d\d):(\d\d):(\d\d)\x20
         GMT
         \s*\z/ix =~ date
    year = $3.to_i
    if year < 50
      year += 2000
    else
      year += 1900
    end
    self.utc(year, $2, $1.to_i, $4.to_i, $5.to_i, $6.to_i)
  elsif /\A\s*
         (?:Mon|Tue|Wed|Thu|Fri|Sat|Sun)\x20
         (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\x20
         (\d\d|\x20\d)\x20
         (\d\d):(\d\d):(\d\d)\x20
         (\d{4})
         \s*\z/ix =~ date
    self.utc($6.to_i, MonthValue[$1.upcase], $2.to_i,
             $3.to_i, $4.to_i, $5.to_i)
  else
    raise ArgumentError.new("not RFC 2616 compliant date: #{date.inspect}")
  end
end

time.inspect → string Link

Returns a string representing time. Equivalent to calling Time#strftime with a format string of “%Y-%m-%d %H:%M:%S %z'' for a local time and “%Y-%m-%d %H:%M:%S UTC'' for a UTC time.

Time.now.to_s       #=> "2007-10-05 16:09:51 +0900"
Time.now.utc.to_s   #=> "2007-10-05 07:09:51 UTC"

Source: show

static VALUE
time_to_s(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    if (TIME_UTC_P(tobj))
        return strftimev("%Y-%m-%d %H:%M:%S UTC", time);
    else
        return strftimev("%Y-%m-%d %H:%M:%S %z", time);
}

time.isdst → true or false Link

Returns true if time occurs during Daylight Saving Time in its time zone.

# CST6CDT:
  Time.local(2000, 1, 1).zone    #=> "CST"
  Time.local(2000, 1, 1).isdst   #=> false
  Time.local(2000, 1, 1).dst?    #=> false
  Time.local(2000, 7, 1).zone    #=> "CDT"
  Time.local(2000, 7, 1).isdst   #=> true
  Time.local(2000, 7, 1).dst?    #=> true

# Asia/Tokyo:
  Time.local(2000, 1, 1).zone    #=> "JST"
  Time.local(2000, 1, 1).isdst   #=> false
  Time.local(2000, 1, 1).dst?    #=> false
  Time.local(2000, 7, 1).zone    #=> "JST"
  Time.local(2000, 7, 1).isdst   #=> false
  Time.local(2000, 7, 1).dst?    #=> false

Source: show

static VALUE
time_isdst(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    MAKE_TM(time, tobj);
    return tobj->vtm.isdst ? Qtrue : Qfalse;
}

iso8601(date) Link

Alias for: xmlschema

time.localtime → time time.localtime(utc_offset) → time Link

Converts time to local time (using the local time zone in effect for this process) modifying the receiver.

If utc_offset is given, it is used instead of the local time.

t = Time.utc(2000, "jan", 1, 20, 15, 1) #=> 2000-01-01 20:15:01 UTC
t.utc?                                  #=> true

t.localtime                             #=> 2000-01-01 14:15:01 -0600
t.utc?                                  #=> false

t.localtime("+09:00")                   #=> 2000-01-02 05:15:01 +0900
t.utc?                                  #=> false

Source: show

static VALUE
time_localtime_m(int argc, VALUE *argv, VALUE time)
{
    VALUE off;
    rb_scan_args(argc, argv, "01", &off);

    if (!NIL_P(off)) {
        off = utc_offset_arg(off);
        validate_utc_offset(off);

        time_set_utc_offset(time, off);
        return time_fixoff(time);
    }

    return time_localtime(time);
}

marshal_dump() Link

undocumented

Source: show

static VALUE
time_mdump(VALUE time)
{
    struct time_object *tobj;
    unsigned long p, s;
    char buf[8];
    int i;
    VALUE str;

    struct vtm vtm;
    long year;
    long usec, nsec;
    VALUE subsecx, nano, subnano, v;

    GetTimeval(time, tobj);

    gmtimew(tobj->timew, &vtm);

    if (FIXNUM_P(vtm.year)) {
        year = FIX2LONG(vtm.year);
        if (year < 1900 || 1900+0xffff < year)
            rb_raise(rb_eArgError, "year too big to marshal: %ld UTC", year);
    }
    else {
        rb_raise(rb_eArgError, "year too big to marshal");
    }

    subsecx = vtm.subsecx;

    nano = mulquo(subsecx, INT2FIX(1000000000), INT2FIX(TIME_SCALE));
    divmodv(nano, INT2FIX(1), &v, &subnano);
    nsec = FIX2LONG(v);
    usec = nsec / 1000;
    nsec = nsec % 1000;

    nano = add(LONG2FIX(nsec), subnano);

    p = 0x1UL            << 31 | /*  1 */
        TIME_UTC_P(tobj) << 30 | /*  1 */
        (year-1900)      << 14 | /* 16 */
        (vtm.mon-1)      << 10 | /*  4 */
        vtm.mday         <<  5 | /*  5 */
        vtm.hour;                /*  5 */
    s = vtm.min          << 26 | /*  6 */
        vtm.sec          << 20 | /*  6 */
        usec;    /* 20 */

    for (i=0; i<4; i++) {
        buf[i] = (unsigned char)p;
        p = RSHIFT(p, 8);
    }
    for (i=4; i<8; i++) {
        buf[i] = (unsigned char)s;
        s = RSHIFT(s, 8);
    }

    str = rb_str_new(buf, 8);
    rb_copy_generic_ivar(str, time);
    if (!rb_equal(nano, INT2FIX(0))) {
        if (TYPE(nano) == T_RATIONAL) {
            rb_ivar_set(str, id_nano_num, RRATIONAL(nano)->num);
            rb_ivar_set(str, id_nano_den, RRATIONAL(nano)->den);
        }
        else {
            rb_ivar_set(str, id_nano_num, nano);
            rb_ivar_set(str, id_nano_den, INT2FIX(1));
        }
    }
    if (nsec) { /* submicro is only for Ruby 1.9.1 compatibility */
        /*
         * submicro is formatted in fixed-point packed BCD (without sign).
         * It represent digits under microsecond.
         * For nanosecond resolution, 3 digits (2 bytes) are used.
         * However it can be longer.
         * Extra digits are ignored for loading.
         */
        char buf[2];
        int len = (int)sizeof(buf);
        buf[1] = (char)((nsec % 10) << 4);
        nsec /= 10;
        buf[0] = (char)(nsec % 10);
        nsec /= 10;
        buf[0] |= (char)((nsec % 10) << 4);
        if (buf[1] == 0)
            len = 1;
        rb_ivar_set(str, id_submicro, rb_str_new(buf, len));
    }
    if (!TIME_UTC_P(tobj)) {
        VALUE off = time_utc_offset(time), div, mod;
        divmodv(off, INT2FIX(1), &div, &mod);
        if (rb_equal(mod, INT2FIX(0)))
            off = rb_Integer(div);
        rb_ivar_set(str, id_offset, off);
    }
    return str;
}

marshal_load(p1) Link

undocumented

Source: show

static VALUE
time_mload(VALUE time, VALUE str)
{
    struct time_object *tobj;
    unsigned long p, s;
    time_t sec;
    long usec;
    unsigned char *buf;
    struct vtm vtm;
    int i, gmt;
    long nsec;
    VALUE submicro, nano_num, nano_den, offset;
    wideval_t timew;
    st_data_t data;

    time_modify(time);

#define get_attr(attr, iffound) \
    attr = rb_attr_get(str, id_##attr); \
    if (!NIL_P(attr)) { \
        data = id_##attr; \
        iffound; \
        st_delete(rb_generic_ivar_table(str), &data, 0); \
    }

    get_attr(nano_num, {});
    get_attr(nano_den, {});
    get_attr(submicro, {});
    get_attr(offset, validate_utc_offset(offset));
#undef get_attr

    rb_copy_generic_ivar(time, str);

    StringValue(str);
    buf = (unsigned char *)RSTRING_PTR(str);
    if (RSTRING_LEN(str) != 8) {
        rb_raise(rb_eTypeError, "marshaled time format differ");
    }

    p = s = 0;
    for (i=0; i<4; i++) {
        p |= buf[i]<<(8*i);
    }
    for (i=4; i<8; i++) {
        s |= buf[i]<<(8*(i-4));
    }

    if ((p & (1UL<<31)) == 0) {
        gmt = 0;
        offset = Qnil;
        sec = p;
        usec = s;
        nsec = usec * 1000;
        timew = wadd(rb_time_magnify(TIMET2WV(sec)), wmulquoll(WINT2FIXWV(usec), TIME_SCALE, 1000000));
    }
    else {
        p &= ~(1UL<<31);
        gmt        = (int)((p >> 30) & 0x1);

        vtm.year = INT2FIX(((int)(p >> 14) & 0xffff) + 1900);
        vtm.mon  = ((int)(p >> 10) & 0xf) + 1;
        vtm.mday = (int)(p >>  5) & 0x1f;
        vtm.hour = (int) p        & 0x1f;
        vtm.min  = (int)(s >> 26) & 0x3f;
        vtm.sec  = (int)(s >> 20) & 0x3f;
        vtm.utc_offset = INT2FIX(0);
        vtm.yday = vtm.wday = 0;
        vtm.isdst = 0;
        vtm.zone = "";

        usec = (long)(s & 0xfffff);
        nsec = usec * 1000;


        vtm.subsecx = mulquo(LONG2FIX(nsec), INT2FIX(TIME_SCALE), LONG2FIX(1000000000));
        if (nano_num != Qnil) {
            VALUE nano = quo(num_exact(nano_num), num_exact(nano_den));
            vtm.subsecx = add(vtm.subsecx, mulquo(nano, INT2FIX(TIME_SCALE), LONG2FIX(1000000000)));
        }
        else if (submicro != Qnil) { /* for Ruby 1.9.1 compatibility */
            unsigned char *ptr;
            long len;
            int digit;
            ptr = (unsigned char*)StringValuePtr(submicro);
            len = RSTRING_LEN(submicro);
            nsec = 0;
            if (0 < len) {
                if (10 <= (digit = ptr[0] >> 4)) goto end_submicro;
                nsec += digit * 100;
                if (10 <= (digit = ptr[0] & 0xf)) goto end_submicro;
                nsec += digit * 10;
            }
            if (1 < len) {
                if (10 <= (digit = ptr[1] >> 4)) goto end_submicro;
                nsec += digit;
            }
            vtm.subsecx = add(vtm.subsecx, mulquo(LONG2FIX(nsec), INT2FIX(TIME_SCALE), LONG2FIX(1000000000)));
end_submicro: ;
        }
        timew = timegmw(&vtm);
    }

    GetNewTimeval(time, tobj);
    tobj->gmt = 0;
    tobj->tm_got = 0;
    tobj->timew = timew;
    if (gmt) {
        TIME_SET_UTC(tobj);
    }
    else if (!NIL_P(offset)) {
        time_set_utc_offset(time, offset);
        time_fixoff(time);
    }

    return time;
}

time.mday → fixnum Link

Returns the day of the month (1..n) for time.

t = Time.now   #=> 2007-11-19 08:27:03 -0600
t.day          #=> 19
t.mday         #=> 19

Source: show

static VALUE
time_mday(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    MAKE_TM(time, tobj);
    return INT2FIX(tobj->vtm.mday);
}

time.min → fixnum Link

Returns the minute of the hour (0..59) for time.

t = Time.now   #=> 2007-11-19 08:25:51 -0600
t.min          #=> 25

Source: show

static VALUE
time_min(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    MAKE_TM(time, tobj);
    return INT2FIX(tobj->vtm.min);
}

time.mon → fixnum time.month → fixnum Link

Returns the month of the year (1..12) for time.

t = Time.now   #=> 2007-11-19 08:27:30 -0600
t.mon          #=> 11
t.month        #=> 11

Source: show

static VALUE
time_mon(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    MAKE_TM(time, tobj);
    return INT2FIX(tobj->vtm.mon);
}

time.monday? → true or false Link

Returns true if time represents Monday.

t = Time.local(2003, 8, 4)       #=> 2003-08-04 00:00:00 -0500
p t.monday?                      #=> true

Source: show

static VALUE
time_monday(VALUE time)
{
    wday_p(1);
}

time.month → fixnum Link

Returns the month of the year (1..12) for time.

t = Time.now   #=> 2007-11-19 08:27:30 -0600
t.mon          #=> 11
t.month        #=> 11

Source: show

static VALUE
time_mon(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    MAKE_TM(time, tobj);
    return INT2FIX(tobj->vtm.mon);
}

time.nsec → int Link

Returns just the number of nanoseconds for time.

t = Time.now        #=> 2007-11-17 15:18:03 +0900
"%10.9f" % t.to_f   #=> "1195280283.536151409"
t.nsec              #=> 536151406

The lowest digit of #to_f and nsec is different because IEEE 754 double is not accurate enough to represent nanoseconds from the Epoch. The accurate value is returned by nsec.

Source: show

static VALUE
time_nsec(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    return rb_to_int(w2v(wmulquoll(wmod(tobj->timew, WINT2WV(TIME_SCALE)), 1000000000, TIME_SCALE)));
}

parse(date, now=self.now) Link

Parses date using Date._parse and converts it to a Time object.

If a block is given, the year described in date is converted by the block. For example:

Time.parse(...) {|y| 0 <= y && y < 100 ? (y >= 69 ? y + 1900 : y + 2000) : y}

If the upper components of the given time are broken or missing, they are supplied with those of now. For the lower components, the minimum values (1 or 0) are assumed if broken or missing. For example:

# Suppose it is "Thu Nov 29 14:33:20 GMT 2001" now and
# your timezone is GMT:
now = Time.parse("Thu Nov 29 14:33:20 GMT 2001")
Time.parse("16:30", now)     #=> 2001-11-29 16:30:00 +0900
Time.parse("7/23", now)      #=> 2001-07-23 00:00:00 +0900
Time.parse("Aug 31", now)    #=> 2001-08-31 00:00:00 +0900
Time.parse("Aug 2000", now)  #=> 2000-08-01 00:00:00 +0900

Since there are numerous conflicts among locally defined timezone abbreviations all over the world, this method is not made to understand all of them. For example, the abbreviation “CST” is used variously as:

-06:00 in America/Chicago,
-05:00 in America/Havana,
+08:00 in Asia/Harbin,
+09:30 in Australia/Darwin,
+10:30 in Australia/Adelaide,
etc.

Based on the fact, this method only understands the timezone abbreviations described in RFC 822 and the system timezone, in the order named. (i.e. a definition in RFC 822 overrides the system timezone definition.) The system timezone is taken from Time.local(year, 1, 1).zone and Time.local(year, 7, 1).zone. If the extracted timezone abbreviation does not match any of them, it is ignored and the given time is regarded as a local time.

ArgumentError is raised if Date._parse cannot extract information from date or Time class cannot represent specified date.

This method can be used as fail-safe for other parsing methods as:

Time.rfc2822(date) rescue Time.parse(date)
Time.httpdate(date) rescue Time.parse(date)
Time.xmlschema(date) rescue Time.parse(date)

A failure for #parse should be checked, though.

time library should be required to use this method as follows.

require 'time'

Source: show | on GitHub

# File ../ruby/lib/time.rb, line 263
def parse(date, now=self.now)
  comp = !block_given?
  d = Date._parse(date, comp)
  if !d[:year] && !d[:mon] && !d[:mday] && !d[:hour] && !d[:min] && !d[:sec] && !d[:sec_fraction]
    raise ArgumentError, "no time information in #{date.inspect}"
  end
  year = d[:year]
  year = yield(year) if year && !comp
  make_time(year, d[:mon], d[:mday], d[:hour], d[:min], d[:sec], d[:sec_fraction], d[:zone], now)
end

rake_original_time_compare(other) Link

Alias for: <=>

rfc2822(date) Link

Parses date as date-time defined by RFC 2822 and converts it to a Time object. The format is identical to the date format defined by RFC 822 and updated by RFC 1123.

ArgumentError is raised if date is not compliant with RFC 2822 or Time class cannot represent specified date.

See rfc2822 for more information on this format.

time library should be required to use this method as follows.

require 'time'

Also aliased as: rfc822

Source: show | on GitHub

# File ../ruby/lib/time.rb, line 316
def rfc2822(date)
  if /\A\s*
      (?:(?:Mon|Tue|Wed|Thu|Fri|Sat|Sun)\s*,\s*)?
      (\d{1,2})\s+
      (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\s+
      (\d{2,})\s+
      (\d{2})\s*
      :\s*(\d{2})\s*
      (?::\s*(\d{2}))?\s+
      ([+-]\d{4}|
       UT|GMT|EST|EDT|CST|CDT|MST|MDT|PST|PDT|[A-IK-Z])/ix =~ date
    # Since RFC 2822 permit comments, the regexp has no right anchor.
    day = $1.to_i
    mon = MonthValue[$2.upcase]
    year = $3.to_i
    hour = $4.to_i
    min = $5.to_i
    sec = $6 ? $6.to_i : 0
    zone = $7

    # following year completion is compliant with RFC 2822.
    year = if year < 50
             2000 + year
           elsif year < 1000
             1900 + year
           else
             year
           end

    year, mon, day, hour, min, sec =
      apply_offset(year, mon, day, hour, min, sec, zone_offset(zone))
    t = self.utc(year, mon, day, hour, min, sec)
    t.localtime if !zone_utc?(zone)
    t
  else
    raise ArgumentError.new("not RFC 2822 compliant date: #{date.inspect}")
  end
end

rfc822(date) Link

Alias for: rfc2822

time.round([ndigits]) → new_time Link

Rounds sub seconds to a given precision in decimal digits (0 digits by default). It returns a new time object. ndigits should be zero or positive integer.

require 'time'

t = Time.utc(2010,3,30, 5,43,"25.123456789".to_r)
p t.iso8601(10)           #=> "2010-03-30T05:43:25.1234567890Z"
p t.round.iso8601(10)     #=> "2010-03-30T05:43:25.0000000000Z"
p t.round(0).iso8601(10)  #=> "2010-03-30T05:43:25.0000000000Z"
p t.round(1).iso8601(10)  #=> "2010-03-30T05:43:25.1000000000Z"
p t.round(2).iso8601(10)  #=> "2010-03-30T05:43:25.1200000000Z"
p t.round(3).iso8601(10)  #=> "2010-03-30T05:43:25.1230000000Z"
p t.round(4).iso8601(10)  #=> "2010-03-30T05:43:25.1235000000Z"
p t.round(5).iso8601(10)  #=> "2010-03-30T05:43:25.1234600000Z"
p t.round(6).iso8601(10)  #=> "2010-03-30T05:43:25.1234570000Z"
p t.round(7).iso8601(10)  #=> "2010-03-30T05:43:25.1234568000Z"
p t.round(8).iso8601(10)  #=> "2010-03-30T05:43:25.1234567900Z"
p t.round(9).iso8601(10)  #=> "2010-03-30T05:43:25.1234567890Z"
p t.round(10).iso8601(10) #=> "2010-03-30T05:43:25.1234567890Z"

t = Time.utc(1999,12,31, 23,59,59)
p((t + 0.4).round.iso8601(3))    #=> "1999-12-31T23:59:59.000Z"
p((t + 0.49).round.iso8601(3))   #=> "1999-12-31T23:59:59.000Z"
p((t + 0.5).round.iso8601(3))    #=> "2000-01-01T00:00:00.000Z"
p((t + 1.4).round.iso8601(3))    #=> "2000-01-01T00:00:00.000Z"
p((t + 1.49).round.iso8601(3))   #=> "2000-01-01T00:00:00.000Z"
p((t + 1.5).round.iso8601(3))    #=> "2000-01-01T00:00:01.000Z"

t = Time.utc(1999,12,31, 23,59,59)
p (t + 0.123456789).round(4).iso8601(6)  #=> "1999-12-31T23:59:59.123500Z"

Source: show

static VALUE
time_round(int argc, VALUE *argv, VALUE time)
{
    VALUE ndigits, v, a, b, den;
    long nd;
    struct time_object *tobj;

    rb_scan_args(argc, argv, "01", &ndigits);

    if (NIL_P(ndigits))
        ndigits = INT2FIX(0);
    else
        ndigits = rb_to_int(ndigits);

    nd = NUM2LONG(ndigits);
    if (nd < 0)
        rb_raise(rb_eArgError, "negative ndigits given");

    GetTimeval(time, tobj);
    v = w2v(rb_time_unmagnify(tobj->timew));

    a = INT2FIX(1);
    b = INT2FIX(10);
    while (0 < nd) {
        if (nd & 1)
            a = mul(a, b);
        b = mul(b, b);
        nd = nd >> 1;
    }
    den = quo(INT2FIX(1), a);
    v = mod(v, den);
    if (lt(v, quo(den, INT2FIX(2))))
        return time_add(tobj, v, -1);
    else
        return time_add(tobj, sub(den, v), 1);
}

time.saturday? → true or false Link

Returns true if time represents Saturday.

t = Time.local(2006, 6, 10)      #=> 2006-06-10 00:00:00 -0500
t.saturday?                      #=> true

Source: show

static VALUE
time_saturday(VALUE time)
{
    wday_p(6);
}

time.sec → fixnum Link

Returns the second of the minute (0..60)[Yes, seconds really can range from zero to 60. This allows the system to inject leap seconds every now and then to correct for the fact that years are not really a convenient number of hours long.] for time.

t = Time.now   #=> 2007-11-19 08:25:02 -0600
t.sec          #=> 2

Source: show

static VALUE
time_sec(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    MAKE_TM(time, tobj);
    return INT2FIX(tobj->vtm.sec);
}

time.strftime( string ) → string Link

Formats time according to the directives in the given format string. The directives begins with a percent (%) character. Any text not listed as a directive will be passed through to the output string.

The directive consists of a percent (%) character, zero or more flags, optional minimum field width, optional modifier and a conversion specifier as follows.

%<flags><width><modifier><conversion>

Flags:

-  don't pad a numerical output.
_  use spaces for padding.
0  use zeros for padding.
^  upcase the result string.
#  change case.
:  use colons for %z.

The minimum field width specifies the minimum width.

The modifier is “E” and “O”. They are ignored.

Format directives:

Date (Year, Month, Day):
  %Y - Year with century (can be negative, 4 digits at least)
          -0001, 0000, 1995, 2009, 14292, etc.
  %C - year / 100 (round down.  20 in 2009)
  %y - year % 100 (00..99)

  %m - Month of the year, zero-padded (01..12)
          %_m  blank-padded ( 1..12)
          %-m  no-padded (1..12)
  %B - The full month name (``January'')
          %^B  uppercased (``JANUARY'')
  %b - The abbreviated month name (``Jan'')
          %^b  uppercased (``JAN'')
  %h - Equivalent to %b

  %d - Day of the month, zero-padded (01..31)
          %-d  no-padded (1..31)
  %e - Day of the month, blank-padded ( 1..31)

  %j - Day of the year (001..366)

Time (Hour, Minute, Second, Subsecond):
  %H - Hour of the day, 24-hour clock, zero-padded (00..23)
  %k - Hour of the day, 24-hour clock, blank-padded ( 0..23)
  %I - Hour of the day, 12-hour clock, zero-padded (01..12)
  %l - Hour of the day, 12-hour clock, blank-padded ( 1..12)
  %P - Meridian indicator, lowercase (``am'' or ``pm'')
  %p - Meridian indicator, uppercase (``AM'' or ``PM'')

  %M - Minute of the hour (00..59)

  %S - Second of the minute (00..60)

  %L - Millisecond of the second (000..999)
  %N - Fractional seconds digits, default is 9 digits (nanosecond)
          %3N  millisecond (3 digits)
          %6N  microsecond (6 digits)
          %9N  nanosecond (9 digits)
          %12N picosecond (12 digits)

Time zone:
  %z - Time zone as hour and minute offset from UTC (e.g. +0900)
          %:z - hour and minute offset from UTC with a colon (e.g. +09:00)
          %::z - hour, minute and second offset from UTC (e.g. +09:00:00)
  %Z - Time zone abbreviation name

Weekday:
  %A - The full weekday name (``Sunday'')
          %^A  uppercased (``SUNDAY'')
  %a - The abbreviated name (``Sun'')
          %^a  uppercased (``SUN'')
  %u - Day of the week (Monday is 1, 1..7)
  %w - Day of the week (Sunday is 0, 0..6)

ISO 8601 week-based year and week number:
The week 1 of YYYY starts with a Monday and includes YYYY-01-04.
The days in the year before the first week are in the last week of
the previous year.
  %G - The week-based year
  %g - The last 2 digits of the week-based year (00..99)
  %V - Week number of the week-based year (01..53)

Week number:
The week 1 of YYYY starts with a Sunday or Monday (according to %U
or %W).  The days in the year before the first week are in week 0.
  %U - Week number of the year.  The week starts with Sunday.  (00..53)
  %W - Week number of the year.  The week starts with Monday.  (00..53)

Seconds since the Epoch:
  %s - Number of seconds since 1970-01-01 00:00:00 UTC.

Literal string:
  %n - Newline character (\n)
  %t - Tab character (\t)
  %% - Literal ``%'' character

Combination:
  %c - date and time (%a %b %e %T %Y)
  %D - Date (%m/%d/%y)
  %F - The ISO 8601 date format (%Y-%m-%d)
  %v - VMS date (%e-%^b-%4Y)
  %x - Same as %D
  %X - Same as %T
  %r - 12-hour time (%I:%M:%S %p)
  %R - 24-hour time (%H:%M)
  %T - 24-hour time (%H:%M:%S)

This method is similar to strftime() function defined in ISO C and POSIX. Several directives (%a, %A, %b, %B, %c, %p, %r, %x, %X, %E*, %O* and %Z) are locale dependent in the function. However this method is locale independent since Ruby 1.9. So, the result may differ even if a same format string is used in other systems such as C. It is good practice to avoid %x and %X because there are corresponding locale independent representations, %D and %T.

Examples:

t = Time.new(2007,11,19,8,37,48,"-06:00") #=> 2007-11-19 08:37:48 -0600
t.strftime("Printed on %m/%d/%Y")   #=> "Printed on 11/19/2007"
t.strftime("at %I:%M%p")            #=> "at 08:37AM"

Various ISO 8601 formats:

%Y%m%d           => 20071119                  Calendar date (basic)
%F               => 2007-11-19                Calendar date (extended)
%Y-%m            => 2007-11                   Calendar date, reduced accuracy, specific month
%Y               => 2007                      Calendar date, reduced accuracy, specific year
%C               => 20                        Calendar date, reduced accuracy, specific century
%Y%j             => 2007323                   Ordinal date (basic)
%Y-%j            => 2007-323                  Ordinal date (extended)
%GW%V%u          => 2007W471                  Week date (basic)
%G-W%V-%u        => 2007-W47-1                Week date (extended)
%GW%V            => 2007W47                   Week date, reduced accuracy, specific week (basic)
%G-W%V           => 2007-W47                  Week date, reduced accuracy, specific week (extended)
%H%M%S           => 083748                    Local time (basic)
%T               => 08:37:48                  Local time (extended)
%H%M             => 0837                      Local time, reduced accuracy, specific minute (basic)
%H:%M            => 08:37                     Local time, reduced accuracy, specific minute (extended)
%H               => 08                        Local time, reduced accuracy, specific hour
%H%M%S,%L        => 083748,000                Local time with decimal fraction, comma as decimal sign (basic)
%T,%L            => 08:37:48,000              Local time with decimal fraction, comma as decimal sign (extended)
%H%M%S.%L        => 083748.000                Local time with decimal fraction, full stop as decimal sign (basic)
%T.%L            => 08:37:48.000              Local time with decimal fraction, full stop as decimal sign (extended)
%H%M%S%z         => 083748-0600               Local time and the difference from UTC (basic)
%T%:z            => 08:37:48-06:00            Local time and the difference from UTC (extended)
%Y%m%dT%H%M%S%z  => 20071119T083748-0600      Date and time of day for calendar date (basic)
%FT%T%:z         => 2007-11-19T08:37:48-06:00 Date and time of day for calendar date (extended)
%Y%jT%H%M%S%z    => 2007323T083748-0600       Date and time of day for ordinal date (basic)
%Y-%jT%T%:z      => 2007-323T08:37:48-06:00   Date and time of day for ordinal date (extended)
%GW%V%uT%H%M%S%z => 2007W471T083748-0600      Date and time of day for week date (basic)
%G-W%V-%uT%T%:z  => 2007-W47-1T08:37:48-06:00 Date and time of day for week date (extended)
%Y%m%dT%H%M      => 20071119T0837             Calendar date and local time (basic)
%FT%R            => 2007-11-19T08:37          Calendar date and local time (extended)
%Y%jT%H%MZ       => 2007323T0837Z             Ordinal date and UTC of day (basic)
%Y-%jT%RZ        => 2007-323T08:37Z           Ordinal date and UTC of day (extended)
%GW%V%uT%H%M%z   => 2007W471T0837-0600        Week date and local time and difference from UTC (basic)
%G-W%V-%uT%R%:z  => 2007-W47-1T08:37-06:00    Week date and local time and difference from UTC (extended)

Source: show

static VALUE
time_strftime(VALUE time, VALUE format)
{
    struct time_object *tobj;
    char buffer[SMALLBUF], *buf = buffer;
    const char *fmt;
    long len;
    VALUE str;

    GetTimeval(time, tobj);
    MAKE_TM(time, tobj);
    StringValue(format);
    if (!rb_enc_str_asciicompat_p(format)) {
        rb_raise(rb_eArgError, "format should have ASCII compatible encoding");
    }
    format = rb_str_new4(format);
    fmt = RSTRING_PTR(format);
    len = RSTRING_LEN(format);
    if (len == 0) {
        rb_warning("strftime called with empty format string");
    }
    else if (memchr(fmt, '\0', len)) {
        /* Ruby string may contain \0's. */
        const char *p = fmt, *pe = fmt + len;

        str = rb_str_new(0, 0);
        while (p < pe) {
            len = rb_strftime_alloc(&buf, p, &tobj->vtm, tobj->timew, TIME_UTC_P(tobj));
            rb_str_cat(str, buf, len);
            p += strlen(p);
            if (buf != buffer) {
                xfree(buf);
                buf = buffer;
            }
            for (fmt = p; p < pe && !*p; ++p);
            if (p > fmt) rb_str_cat(str, fmt, p - fmt);
        }
        return str;
    }
    else {
        len = rb_strftime_alloc(&buf, RSTRING_PTR(format),
                                &tobj->vtm, tobj->timew, TIME_UTC_P(tobj));
    }
    str = rb_str_new(buf, len);
    if (buf != buffer) xfree(buf);
    rb_enc_copy(str, format);
    return str;
}

strptime(date, format, now=self.now) Link

Parses date using Date._strptime and converts it to a Time object.

If a block is given, the year described in date is converted by the block. For example:

Time.strptime(...) {|y| y < 100 ? (y >= 69 ? y + 1900 : y + 2000) : y}

Source: show | on GitHub

# File ../ruby/lib/time.rb, line 281
def strptime(date, format, now=self.now)
  d = Date._strptime(date, format)
  raise ArgumentError, "invalid strptime format - `#{format}'" unless d
  if seconds = d[:seconds]
    if offset = d[:offset]
      Time.at(seconds).localtime(offset)
    else
      Time.at(seconds)
    end
  else
    year = d[:year]
    year = yield(year) if year && block_given?
    make_time(year, d[:mon], d[:mday], d[:hour], d[:min], d[:sec], d[:sec_fraction], d[:zone], now)
  end
end

time.subsec → number Link

Returns just the fraction for time.

The result is possibly rational.

t = Time.now        #=> 2009-03-26 22:33:12 +0900
"%10.9f" % t.to_f   #=> "1238074392.940563917"
t.subsec            #=> (94056401/100000000)

The lowest digit of #to_f and subsec is different because IEEE 754 double is not accurate enough to represent the rational. The accurate value is returned by subsec.

Source: show

static VALUE
time_subsec(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    return quo(w2v(wmod(tobj->timew, WINT2FIXWV(TIME_SCALE))), INT2FIX(TIME_SCALE));
}

time.succ → new_time Link

Return a new time object, one second later than time. #succ is obsolete since 1.9.2 for time is not a discrete value.

t = Time.now       #=> 2007-11-19 08:23:57 -0600
t.succ             #=> 2007-11-19 08:23:58 -0600

Source: show

VALUE
rb_time_succ(VALUE time)
{
    struct time_object *tobj;
    struct time_object *tobj2;

    rb_warn("Time#succ is obsolete; use time + 1");
    GetTimeval(time, tobj);
    time = time_new_timew(rb_cTime, wadd(tobj->timew, WINT2FIXWV(TIME_SCALE)));
    GetTimeval(time, tobj2);
    TIME_COPY_GMT(tobj2, tobj);
    return time;
}

time.sunday? → true or false Link

Returns true if time represents Sunday.

t = Time.local(1990, 4, 1)       #=> 1990-04-01 00:00:00 -0600
t.sunday?                        #=> true

Source: show

static VALUE
time_sunday(VALUE time)
{
    wday_p(0);
}

time.thursday? → true or false Link

Returns true if time represents Thursday.

t = Time.local(1995, 12, 21)     #=> 1995-12-21 00:00:00 -0600
p t.thursday?                    #=> true

Source: show

static VALUE
time_thursday(VALUE time)
{
    wday_p(4);
}

time.to_a → array Link

Returns a ten-element array of values for time: {[ sec, min, hour, day, month, year, wday, yday, isdst, zone ]}. See the individual methods for an explanation of the valid ranges of each value. The ten elements can be passed directly to Time::utc or Time::local to create a new Time.

t = Time.now     #=> 2007-11-19 08:36:01 -0600
now = t.to_a     #=> [1, 36, 8, 19, 11, 2007, 1, 323, false, "CST"]

Source: show

static VALUE
time_to_a(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    MAKE_TM(time, tobj);
    return rb_ary_new3(10,
                    INT2FIX(tobj->vtm.sec),
                    INT2FIX(tobj->vtm.min),
                    INT2FIX(tobj->vtm.hour),
                    INT2FIX(tobj->vtm.mday),
                    INT2FIX(tobj->vtm.mon),
                    tobj->vtm.year,
                    INT2FIX(tobj->vtm.wday),
                    INT2FIX(tobj->vtm.yday),
                    tobj->vtm.isdst?Qtrue:Qfalse,
                    time_zone(time));
}

t.to_date → date Link

Returns a Date object which denotes self.

Source: show

static VALUE
time_to_date(VALUE self)
{
    VALUE y, nth, ret;
    int ry, m, d;

    y = f_year(self);
    m = FIX2INT(f_mon(self));
    d = FIX2INT(f_mday(self));

    decode_year(y, -1, &nth, &ry);

    ret = d_simple_new_internal(cDate,
                                nth, 0,
                                GREGORIAN,
                                ry, m, d,
                                HAVE_CIVIL);
    {
        get_d1(ret);
        set_sg(dat, DEFAULT_SG);
    }
    return ret;
}

t.to_datetime → datetime Link

Returns a DateTime object which denotes self.

Source: show

static VALUE
time_to_datetime(VALUE self)
{
    VALUE y, sf, nth, ret;
    int ry, m, d, h, min, s, of;

    y = f_year(self);
    m = FIX2INT(f_mon(self));
    d = FIX2INT(f_mday(self));

    h = FIX2INT(f_hour(self));
    min = FIX2INT(f_min(self));
    s = FIX2INT(f_sec(self));
    if (s == 60)
        s = 59;

    sf = sec_to_ns(f_subsec(self));
    of = FIX2INT(f_utc_offset(self));

    decode_year(y, -1, &nth, &ry);

    ret = d_complex_new_internal(cDateTime,
                                 nth, 0,
                                 0, sf,
                                 of, DEFAULT_SG,
                                 ry, m, d,
                                 h, min, s,
                                 HAVE_CIVIL | HAVE_TIME);
    {
        get_d1(ret);
        set_sg(dat, DEFAULT_SG);
    }
    return ret;
}

time.to_f → float Link

Returns the value of time as a floating point number of seconds since the Epoch.

t = Time.now
"%10.5f" % t.to_f   #=> "1270968744.77658"
t.to_i              #=> 1270968744

Note that IEEE 754 double is not accurate enough to represent number of nanoseconds from the Epoch.

Source: show

static VALUE
time_to_f(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    return rb_Float(rb_time_unmagnify_to_float(tobj->timew));
}

time.to_i → int Link

Returns the value of time as an integer number of seconds since the Epoch.

t = Time.now
"%10.5f" % t.to_f   #=> "1270968656.89607"
t.to_i              #=> 1270968656

Source: show

static VALUE
time_to_i(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    return w2v(wdiv(tobj->timew, WINT2FIXWV(TIME_SCALE)));
}

to_json(*args) Link

Stores class name (Time) with number of seconds since epoch and number of microseconds for Time as JSON string

Source: show | on GitHub

# File ../ruby/ext/json/lib/json/add/core.rb, line 61
def to_json(*args)
  as_json.to_json(*args)
end

time.to_r → a_rational Link

Returns the value of time as a rational number of seconds since the Epoch.

t = Time.now
p t.to_r            #=> (1270968792716287611/1000000000)

This methods is intended to be used to get an accurate value representing nanoseconds from the Epoch. You can use this to convert time to another Epoch.

Source: show

static VALUE
time_to_r(VALUE time)
{
    struct time_object *tobj;
    VALUE v;

    GetTimeval(time, tobj);
    v = w2v(rb_time_unmagnify(tobj->timew));
    if (TYPE(v) != T_RATIONAL) {
        v = rb_Rational1(v);
    }
    return v;
}

time.to_s → string Link

Returns a string representing time. Equivalent to calling Time#strftime with a format string of “%Y-%m-%d %H:%M:%S %z'' for a local time and “%Y-%m-%d %H:%M:%S UTC'' for a UTC time.

Time.now.to_s       #=> "2007-10-05 16:09:51 +0900"
Time.now.utc.to_s   #=> "2007-10-05 07:09:51 UTC"

Source: show

static VALUE
time_to_s(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    if (TIME_UTC_P(tobj))
        return strftimev("%Y-%m-%d %H:%M:%S UTC", time);
    else
        return strftimev("%Y-%m-%d %H:%M:%S %z", time);
}

t.to_time → time Link

Returns a copy of self as local mode.

Source: show

static VALUE
time_to_time(VALUE self)
{
    return rb_funcall(self, rb_intern("getlocal"), 0);
}

time.tuesday? → true or false Link

Returns true if time represents Tuesday.

t = Time.local(1991, 2, 19)      #=> 1991-02-19 00:00:00 -0600
p t.tuesday?                     #=> true

Source: show

static VALUE
time_tuesday(VALUE time)
{
    wday_p(2);
}

time.tv_nsec → int Link

Returns just the number of nanoseconds for time.

t = Time.now        #=> 2007-11-17 15:18:03 +0900
"%10.9f" % t.to_f   #=> "1195280283.536151409"
t.nsec              #=> 536151406

The lowest digit of #to_f and nsec is different because IEEE 754 double is not accurate enough to represent nanoseconds from the Epoch. The accurate value is returned by nsec.

Source: show

static VALUE
time_nsec(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    return rb_to_int(w2v(wmulquoll(wmod(tobj->timew, WINT2WV(TIME_SCALE)), 1000000000, TIME_SCALE)));
}

time.tv_sec → int Link

Returns the value of time as an integer number of seconds since the Epoch.

t = Time.now
"%10.5f" % t.to_f   #=> "1270968656.89607"
t.to_i              #=> 1270968656

Source: show

static VALUE
time_to_i(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    return w2v(wdiv(tobj->timew, WINT2FIXWV(TIME_SCALE)));
}

time.tv_usec → int Link

Returns just the number of microseconds for time.

t = Time.now        #=> 2007-11-19 08:03:26 -0600
"%10.6f" % t.to_f   #=> "1195481006.775195"
t.usec              #=> 775195

Source: show

static VALUE
time_usec(VALUE time)
{
    struct time_object *tobj;
    wideval_t w, q, r;

    GetTimeval(time, tobj);

    w = wmod(tobj->timew, WINT2WV(TIME_SCALE));
    wmuldivmod(w, WINT2FIXWV(1000000), WINT2FIXWV(TIME_SCALE), &q, &r);
    return rb_to_int(w2v(q));
}

time.usec → int Link

Returns just the number of microseconds for time.

t = Time.now        #=> 2007-11-19 08:03:26 -0600
"%10.6f" % t.to_f   #=> "1195481006.775195"
t.usec              #=> 775195

Source: show

static VALUE
time_usec(VALUE time)
{
    struct time_object *tobj;
    wideval_t w, q, r;

    GetTimeval(time, tobj);

    w = wmod(tobj->timew, WINT2WV(TIME_SCALE));
    wmuldivmod(w, WINT2FIXWV(1000000), WINT2FIXWV(TIME_SCALE), &q, &r);
    return rb_to_int(w2v(q));
}

time.gmtime → time time.utc → time Link

Converts time to UTC (GMT), modifying the receiver.

t = Time.now   #=> 2007-11-19 08:18:31 -0600
t.gmt?         #=> false
t.gmtime       #=> 2007-11-19 14:18:31 UTC
t.gmt?         #=> true

t = Time.now   #=> 2007-11-19 08:18:51 -0600
t.utc?         #=> false
t.utc          #=> 2007-11-19 14:18:51 UTC
t.utc?         #=> true

Source: show

static VALUE
time_gmtime(VALUE time)
{
    struct time_object *tobj;
    struct vtm vtm;

    GetTimeval(time, tobj);
    if (TIME_UTC_P(tobj)) {
        if (tobj->tm_got)
            return time;
    }
    else {
        time_modify(time);
    }

    if (!gmtimew(tobj->timew, &vtm))
        rb_raise(rb_eArgError, "gmtime error");
    tobj->vtm = vtm;

    tobj->tm_got = 1;
    TIME_SET_UTC(tobj);
    return time;
}

time.utc? → true or false Link

Returns true if time represents a time in UTC (GMT).

t = Time.now                        #=> 2007-11-19 08:15:23 -0600
t.utc?                              #=> false
t = Time.gm(2000,"jan",1,20,15,1)   #=> 2000-01-01 20:15:01 UTC
t.utc?                              #=> true

t = Time.now                        #=> 2007-11-19 08:16:03 -0600
t.gmt?                              #=> false
t = Time.gm(2000,1,1,20,15,1)       #=> 2000-01-01 20:15:01 UTC
t.gmt?                              #=> true

Source: show

static VALUE
time_utc_p(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    if (TIME_UTC_P(tobj)) return Qtrue;
    return Qfalse;
}

time.utc_offset → fixnum Link

Returns the offset in seconds between the timezone of time and UTC.

t = Time.gm(2000,1,1,20,15,1)   #=> 2000-01-01 20:15:01 UTC
t.gmt_offset                    #=> 0
l = t.getlocal                  #=> 2000-01-01 14:15:01 -0600
l.gmt_offset                    #=> -21600

Source: show

static VALUE
time_utc_offset(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    MAKE_TM(time, tobj);

    if (TIME_UTC_P(tobj)) {
        return INT2FIX(0);
    }
    else {
        return tobj->vtm.utc_offset;
    }
}

w3cdtf(date) Link

Source: show | on GitHub

# File ../ruby/lib/rss/rss.rb, line 6
def w3cdtf(date)
  if /\A\s*
      (-?\d+)-(\d\d)-(\d\d)
      (?:T
      (\d\d):(\d\d)(?::(\d\d))?
      (\.\d+)?
      (Z|[+-]\d\d:\d\d)?)?
      \s*\z/ix =~ date and (($5 and $8) or (!$5 and !$8))
    datetime = [$1.to_i, $2.to_i, $3.to_i, $4.to_i, $5.to_i, $6.to_i]
    usec = 0
    usec = $7.to_f * 1000000 if $7
    zone = $8
    if zone
      off = zone_offset(zone, datetime[0])
      datetime = apply_offset(*(datetime + [off]))
      datetime << usec
      time = Time.utc(*datetime)
      time.localtime unless zone_utc?(zone)
      time
    else
      datetime << usec
      Time.local(*datetime)
    end
  else
    raise ArgumentError.new("invalid date: #{date.inspect}")
  end
end

time.wday → fixnum Link

Returns an integer representing the day of the week, 0..6, with Sunday == 0.

t = Time.now   #=> 2007-11-20 02:35:35 -0600
t.wday         #=> 2
t.sunday?      #=> false
t.monday?      #=> false
t.tuesday?     #=> true
t.wednesday?   #=> false
t.thursday?    #=> false
t.friday?      #=> false
t.saturday?    #=> false

Source: show

static VALUE
time_wday(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    MAKE_TM(time, tobj);
    return INT2FIX(tobj->vtm.wday);
}

time.wednesday? → true or false Link

Returns true if time represents Wednesday.

t = Time.local(1993, 2, 24)      #=> 1993-02-24 00:00:00 -0600
p t.wednesday?                   #=> true

Source: show

static VALUE
time_wednesday(VALUE time)
{
    wday_p(3);
}

xmlschema(date) Link

Parses date as dateTime defined by XML Schema and converts it to a Time object. The format is restricted version of the format defined by ISO 8601.

ArgumentError is raised if date is not compliant with the format or Time class cannot represent specified date.

See xmlschema for more information on this format.

time library should be required to use this method as follows.

require 'time'

Also aliased as: iso8601

Source: show | on GitHub

# File ../ruby/lib/time.rb, line 420
def xmlschema(date)
  if /\A\s*
      (-?\d+)-(\d\d)-(\d\d)
      T
      (\d\d):(\d\d):(\d\d)
      (\.\d+)?
      (Z|[+-]\d\d:\d\d)?
      \s*\z/ix =~ date
    year = $1.to_i
    mon = $2.to_i
    day = $3.to_i
    hour = $4.to_i
    min = $5.to_i
    sec = $6.to_i
    usec = 0
    if $7
      usec = Rational($7) * 1000000
    end
    if $8
      zone = $8
      year, mon, day, hour, min, sec =
        apply_offset(year, mon, day, hour, min, sec, zone_offset(zone))
      self.utc(year, mon, day, hour, min, sec, usec)
    else
      self.local(year, mon, day, hour, min, sec, usec)
    end
  else
    raise ArgumentError.new("invalid date: #{date.inspect}")
  end
end

time.yday → fixnum Link

Returns an integer representing the day of the year, 1..366.

t = Time.now   #=> 2007-11-19 08:32:31 -0600
t.yday         #=> 323

Source: show

static VALUE
time_yday(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    MAKE_TM(time, tobj);
    return INT2FIX(tobj->vtm.yday);
}

time.year → fixnum Link

Returns the year for time (including the century).

t = Time.now   #=> 2007-11-19 08:27:51 -0600
t.year         #=> 2007

Source: show

static VALUE
time_year(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    MAKE_TM(time, tobj);
    return tobj->vtm.year;
}

time.zone → string Link

Returns the name of the time zone used for time. As of Ruby 1.8, returns “UTC'' rather than “GMT'' for UTC times.

t = Time.gm(2000, "jan", 1, 20, 15, 1)
t.zone   #=> "UTC"
t = Time.local(2000, "jan", 1, 20, 15, 1)
t.zone   #=> "CST"

Source: show

static VALUE
time_zone(VALUE time)
{
    struct time_object *tobj;

    GetTimeval(time, tobj);
    MAKE_TM(time, tobj);

    if (TIME_UTC_P(tobj)) {
        return rb_obj_untaint(rb_locale_str_new_cstr("UTC"));
    }
    if (tobj->vtm.zone == NULL)
        return Qnil;
    return rb_obj_untaint(rb_locale_str_new_cstr(tobj->vtm.zone));
}

zone_offset(zone, year=self.now.year) Link

Source: show | on GitHub

# File ../ruby/lib/time.rb, line 69
def zone_offset(zone, year=self.now.year)
  off = nil
  zone = zone.upcase
  if /\A([+-])(\d\d):?(\d\d)\z/ =~ zone
    off = ($1 == '-' ? -1 : 1) * ($2.to_i * 60 + $3.to_i) * 60
  elsif /\A[+-]\d\d\z/ =~ zone
    off = zone.to_i * 3600
  elsif ZoneOffset.include?(zone)
    off = ZoneOffset[zone] * 3600
  elsif ((t = self.local(year, 1, 1)).zone.upcase == zone rescue false)
    off = t.utc_offset
  elsif ((t = self.local(year, 7, 1)).zone.upcase == zone rescue false)
    off = t.utc_offset
  end
  off
end

apply_offset(year, mon, day, hour, min, sec, off) Link

Source: show | on GitHub

# File ../ruby/lib/time.rb, line 126
def apply_offset(year, mon, day, hour, min, sec, off)
  if off < 0
    off = -off
    off, o = off.divmod(60)
    if o != 0 then sec += o; o, sec = sec.divmod(60); off += o end
    off, o = off.divmod(60)
    if o != 0 then min += o; o, min = min.divmod(60); off += o end
    off, o = off.divmod(24)
    if o != 0 then hour += o; o, hour = hour.divmod(24); off += o end
    if off != 0
      day += off
      if month_days(year, mon) < day
        mon += 1
        if 12 < mon
          mon = 1
          year += 1
        end
        day = 1
      end
    end
  elsif 0 < off
    off, o = off.divmod(60)
    if o != 0 then sec -= o; o, sec = sec.divmod(60); off -= o end
    off, o = off.divmod(60)
    if o != 0 then min -= o; o, min = min.divmod(60); off -= o end
    off, o = off.divmod(24)
    if o != 0 then hour -= o; o, hour = hour.divmod(24); off -= o end
    if off != 0 then
      day -= off
      if day < 1
        mon -= 1
        if mon < 1
          year -= 1
          mon = 12
        end
        day = month_days(year, mon)
      end
    end
  end
  return year, mon, day, hour, min, sec
end

make_time(year, mon, day, hour, min, sec, sec_fraction, zone, now) Link

Source: show | on GitHub

# File ../ruby/lib/time.rb, line 169
def make_time(year, mon, day, hour, min, sec, sec_fraction, zone, now)
  usec = nil
  usec = sec_fraction * 1000000 if sec_fraction
  if now
    begin
      break if year; year = now.year
      break if mon; mon = now.mon
      break if day; day = now.day
      break if hour; hour = now.hour
      break if min; min = now.min
      break if sec; sec = now.sec
      break if sec_fraction; usec = now.tv_usec
    end until true
  end

  year ||= 1970
  mon ||= 1
  day ||= 1
  hour ||= 0
  min ||= 0
  sec ||= 0
  usec ||= 0

  off = nil
  off = zone_offset(zone, year) if zone

  if off
    year, mon, day, hour, min, sec =
      apply_offset(year, mon, day, hour, min, sec, off)
    t = self.utc(year, mon, day, hour, min, sec, usec)
    t.localtime if !zone_utc?(zone)
    t
  else
    self.local(year, mon, day, hour, min, sec, usec)
  end
end

month_days(y, m) Link

Source: show | on GitHub

# File ../ruby/lib/time.rb, line 117
def month_days(y, m)
  if ((y % 4 == 0) && (y % 100 != 0)) || (y % 400 == 0)
    LeapYearMonthDays[m-1]
  else
    CommonYearMonthDays[m-1]
  end
end

zone_utc?(zone) Link

Source: show | on GitHub

# File ../ruby/lib/time.rb, line 86
def zone_utc?(zone)
  # * +0000
  #   In RFC 2822, +0000 indicate a time zone at Universal Time.
  #   Europe/London is "a time zone at Universal Time" in Winter.
  #   Europe/Lisbon is "a time zone at Universal Time" in Winter.
  #   Atlantic/Reykjavik is "a time zone at Universal Time".
  #   Africa/Dakar is "a time zone at Universal Time".
  #   So +0000 is a local time such as Europe/London, etc.
  # * GMT
  #   GMT is used as a time zone abbreviation in Europe/London,
  #   Africa/Dakar, etc.
  #   So it is a local time.
  #
  # * -0000, -00:00
  #   In RFC 2822, -0000 the date-time contains no information about the
  #   local time zone.
  #   In RFC 3339, -00:00 is used for the time in UTC is known,
  #   but the offset to local time is unknown.
  #   They are not appropriate for specific time zone such as
  #   Europe/London because time zone neutral,
  #   So -00:00 and -0000 are treated as UTC.
  if /\A(?:-00:00|-0000|-00|UTC|Z|UT)\z/i =~ zone
    true
  else
    false
  end
end

ZoneOffset	=	{ 'UTC' => 0, # ISO 8601 'Z' => 0, # RFC 822 'UT' => 0, 'GMT' => 0, 'EST' => -5, 'EDT' => -4, 'CST' => -6, 'CDT' => -5, 'MST' => -7, 'MDT' => -6, 'PST' => -8, 'PDT' => -7, # Following definition of military zones is original one. # See RFC 1123 and RFC 2822 for the error in RFC 822. 'A' => +1, 'B' => +2, 'C' => +3, 'D' => +4, 'E' => +5, 'F' => +6, 'G' => +7, 'H' => +8, 'I' => +9, 'K' => +10, 'L' => +11, 'M' => +12, 'N' => -1, 'O' => -2, 'P' => -3, 'Q' => -4, 'R' => -5, 'S' => -6, 'T' => -7, 'U' => -8, 'V' => -9, 'W' => -10, 'X' => -11, 'Y' => -12, }

LeapYearMonthDays	=	[31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]

CommonYearMonthDays	=	[31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]

MonthValue	=	{ 'JAN' => 1, 'FEB' => 2, 'MAR' => 3, 'APR' => 4, 'MAY' => 5, 'JUN' => 6, 'JUL' => 7, 'AUG' => 8, 'SEP' => 9, 'OCT' =>10, 'NOV' =>11, 'DEC' =>12 }

RFC2822_DAY_NAME	=	[ 'Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat' ]

RFC2822_MONTH_NAME	=	[ 'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec' ]

Class Time < Object