Class: Time
- Includes:
- Comparable
- Defined in:
- lib/time.rb,
lib/date.rb,
lib/dateME.rb,
lib/builtinME.rb
Overview
Implements the extensions to the Time class that are described in the documentation for the time.rb library.
Constant Summary collapse
- 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 Method Summary collapse
- .apply_offset(year, mon, day, hour, min, sec, off) ⇒ Object
-
.httpdate(date) ⇒ Object
Parses
date
as HTTP-date defined by RFC 2616 and converts it to a Time object. -
.iso8601 ⇒ Object
Parses
date
as dateTime defined by XML Schema and converts it to a Time object. - .make_time(year, mon, day, hour, min, sec, sec_fraction, zone, now) ⇒ Object
- .month_days(y, m) ⇒ Object
-
.parse(date, now = self.now) ⇒ Object
Parses
date
using Date._parse and converts it to a Time object. -
.rfc2822(date) ⇒ Object
Parses
date
as date-time defined by RFC 2822 and converts it to a Time object. -
.rfc822 ⇒ Object
Parses
date
as date-time defined by RFC 2822 and converts it to a Time object. -
.strptime(date, format, now = self.now) ⇒ Object
Parses
date
using Date._strptime and converts it to a Time object. -
.xmlschema(date) ⇒ Object
Parses
date
as dateTime defined by XML Schema and converts it to a Time object. - .zone_offset(zone, year = self.now.year) ⇒ Object
- .zone_utc?(zone) ⇒ Boolean
Instance Method Summary collapse
-
#httpdate ⇒ Object
Returns a string which represents the time as rfc1123-date of HTTP-date defined by RFC 2616:.
-
#rfc2822 ⇒ Object
(also: #rfc822)
Returns a string which represents the time as date-time defined by RFC 2822:.
- #strftime(fmt = '%F') ⇒ Object
- #to_date ⇒ Object
- #to_datetime ⇒ Object
- #to_time ⇒ Object
-
#xmlschema(fraction_digits = 0) ⇒ Object
(also: #iso8601)
Returns a string which represents the time as dateTime defined by XML Schema:.
Methods included from Comparable
#<, #<=, #==, #>, #>=, #between?
Class Method Details
.apply_offset(year, mon, day, hour, min, sec, off) ⇒ Object
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# File 'lib/time.rb', line 111 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 |
.httpdate(date) ⇒ Object
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.
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# File 'lib/time.rb', line 328 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 |
.iso8601 ⇒ Object
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.
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# File 'lib/time.rb', line 405 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 |
.make_time(year, mon, day, hour, min, sec, sec_fraction, zone, now) ⇒ Object
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# File 'lib/time.rb', line 154 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) ⇒ Object
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# File 'lib/time.rb', line 102 def month_days(y, m) if ((y % 4 == 0) && (y % 100 != 0)) || (y % 400 == 0) LeapYearMonthDays[m-1] else CommonYearMonthDays[m-1] end end |
.parse(date, now = self.now) ⇒ Object
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| 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:
Time.parse("16:30") #=> Thu Nov 29 16:30:00 GMT 2001
Time.parse("7/23") #=> Mon Jul 23 00:00:00 GMT 2001
Time.parse("Aug 31") #=> Fri Aug 31 00:00:00 GMT 2001
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 Time.parse should be checked, though.
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# File 'lib/time.rb', line 242 def parse(date, now=self.now) d = Date._parse(date, false) 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 |
.rfc2822(date) ⇒ Object
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.
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# File 'lib/time.rb', line 279 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 ⇒ Object
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.
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# File 'lib/time.rb', line 317 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 |
.strptime(date, format, now = self.now) ⇒ Object
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}
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# File 'lib/time.rb', line 256 def strptime(date, format, now=self.now) d = Date._strptime(date, format) raise ArgumentError, "invalid strptime format - `#{format}'" unless d 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 |
.xmlschema(date) ⇒ Object
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.
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# File 'lib/time.rb', line 375 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 |
.zone_offset(zone, year = self.now.year) ⇒ Object
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# File 'lib/time.rb', line 72 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 |
.zone_utc?(zone) ⇒ Boolean
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# File 'lib/time.rb', line 89 def zone_utc?(zone) # * +0000 means localtime. [RFC 2822] # * GMT is a localtime abbreviation in Europe/London, etc. if /\A(?:-00:00|-0000|-00|UTC|Z|UT)\z/i =~ zone true else false end end |
Instance Method Details
#httpdate ⇒ Object
Returns a string which represents the time as rfc1123-date of HTTP-date defined by RFC 2616:
day-of-week, DD month-name CCYY hh:mm:ss GMT
Note that the result is always UTC (GMT).
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# File 'lib/time.rb', line 448 def httpdate t = dup.utc sprintf('%s, %02d %s %d %02d:%02d:%02d GMT', RFC2822_DAY_NAME[t.wday], t.day, RFC2822_MONTH_NAME[t.mon-1], t.year, t.hour, t.min, t.sec) end |
#rfc2822 ⇒ Object Also known as: rfc822
Returns a string which represents the time as date-time defined by RFC 2822:
day-of-week, DD month-name CCYY hh:mm:ss zone
where zone is [+-]hhmm.
If self
is a UTC time, -0000 is used as zone.
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# File 'lib/time.rb', line 417 def rfc2822 sprintf('%s, %02d %s %d %02d:%02d:%02d ', RFC2822_DAY_NAME[wday()], day(), RFC2822_MONTH_NAME[mon()-1], year(), hour(), min(), sec() ) + if utc? '-0000' else off = utc_offset sign = off < 0 ? '-' : '+' sprintf('%s%02d%02d', sign, *(off.abs / 60).divmod(60)) end end |
#strftime(fmt = '%F') ⇒ Object
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# File 'lib/dateME.rb', line 5 def strftime(fmt='%F') DateTimeME.new(self).strftime(fmt); end |
#to_date ⇒ Object
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# File 'lib/date.rb', line 1740 def to_date jd = Date.__send__(:civil_to_jd, year(), mon(), mday(), Date::ITALY) Date.new!(Date.__send__(:jd_to_ajd, jd, 0, 0), 0, Date::ITALY) end |
#to_datetime ⇒ Object
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# File 'lib/date.rb', line 1745 def to_datetime jd = DateTime.__send__(:civil_to_jd, year(), mon(), mday(), DateTime::ITALY) fr = DateTime.__send__(:time_to_day_fraction, hour(), min(), [sec, 59].min) + nsec.to_r/86400_000_000_000 of = utc_offset.to_r/86400 DateTime.new!(DateTime.__send__(:jd_to_ajd, jd, fr, of), of, DateTime::ITALY) end |
#to_time ⇒ Object
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# File 'lib/date.rb', line 1738 def to_time() getlocal end |
#xmlschema(fraction_digits = 0) ⇒ Object Also known as: iso8601
Returns a string which represents the time as dateTime defined by XML Schema:
CCYY-MM-DDThh:mm:ssTZD
CCYY-MM-DDThh:mm:ss.sssTZD
where TZD is Z or [+-]hh:mm.
If self is a UTC time, Z is used as TZD. [+-]hh:mm is used otherwise.
fractional_seconds
specifies a number of digits of fractional seconds. Its default value is 0.
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# File 'lib/time.rb', line 470 def xmlschema(fraction_digits=0) sprintf('%d-%02d-%02dT%02d:%02d:%02d', year, mon, day, hour, min, sec) + if fraction_digits == 0 '' elsif fraction_digits <= 9 '.' + sprintf('%09d', nsec)[0, fraction_digits] else '.' + sprintf('%09d', nsec) + '0' * (fraction_digits - 9) end + if utc? 'Z' else off = utc_offset sign = off < 0 ? '-' : '+' sprintf('%s%02d:%02d', sign, *(off.abs / 60).divmod(60)) end end |