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+# format.rb: Written by Tadayoshi Funaba 1999-2010
+# $Id: format.rb,v 2.43 2008-01-17 20:16:31+09 tadf Exp $
+
+class Date
+
+ module Format # :nodoc:
+
+ MONTHS = {
+ 'january' => 1, 'february' => 2, 'march' => 3, 'april' => 4,
+ 'may' => 5, 'june' => 6, 'july' => 7, 'august' => 8,
+ 'september'=> 9, 'october' =>10, 'november' =>11, 'december' =>12
+ }
+
+ DAYS = {
+ 'sunday' => 0, 'monday' => 1, 'tuesday' => 2, 'wednesday'=> 3,
+ 'thursday' => 4, 'friday' => 5, 'saturday' => 6
+ }
+
+ ABBR_MONTHS = {
+ 'jan' => 1, 'feb' => 2, 'mar' => 3, 'apr' => 4,
+ 'may' => 5, 'jun' => 6, 'jul' => 7, 'aug' => 8,
+ 'sep' => 9, 'oct' =>10, 'nov' =>11, 'dec' =>12
+ }
+
+ ABBR_DAYS = {
+ 'sun' => 0, 'mon' => 1, 'tue' => 2, 'wed' => 3,
+ 'thu' => 4, 'fri' => 5, 'sat' => 6
+ }
+
+ ZONES = {
+ 'ut' => 0*3600, 'gmt' => 0*3600, 'est' => -5*3600, 'edt' => -4*3600,
+ 'cst' => -6*3600, 'cdt' => -5*3600, 'mst' => -7*3600, 'mdt' => -6*3600,
+ 'pst' => -8*3600, 'pdt' => -7*3600,
+ 'a' => 1*3600, 'b' => 2*3600, 'c' => 3*3600, 'd' => 4*3600,
+ 'e' => 5*3600, 'f' => 6*3600, 'g' => 7*3600, 'h' => 8*3600,
+ 'i' => 9*3600, 'k' => 10*3600, 'l' => 11*3600, 'm' => 12*3600,
+ 'n' => -1*3600, 'o' => -2*3600, 'p' => -3*3600, 'q' => -4*3600,
+ 'r' => -5*3600, 's' => -6*3600, 't' => -7*3600, 'u' => -8*3600,
+ 'v' => -9*3600, 'w' =>-10*3600, 'x' =>-11*3600, 'y' =>-12*3600,
+ 'z' => 0*3600,
+
+ 'utc' => 0*3600, 'wet' => 0*3600,
+ 'at' => -2*3600, 'brst'=> -2*3600, 'ndt' => -(2*3600+1800),
+ 'art' => -3*3600, 'adt' => -3*3600, 'brt' => -3*3600, 'clst'=> -3*3600,
+ 'nst' => -(3*3600+1800),
+ 'ast' => -4*3600, 'clt' => -4*3600,
+ 'akdt'=> -8*3600, 'ydt' => -8*3600,
+ 'akst'=> -9*3600, 'hadt'=> -9*3600, 'hdt' => -9*3600, 'yst' => -9*3600,
+ 'ahst'=>-10*3600, 'cat' =>-10*3600, 'hast'=>-10*3600, 'hst' =>-10*3600,
+ 'nt' =>-11*3600,
+ 'idlw'=>-12*3600,
+ 'bst' => 1*3600, 'cet' => 1*3600, 'fwt' => 1*3600, 'met' => 1*3600,
+ 'mewt'=> 1*3600, 'mez' => 1*3600, 'swt' => 1*3600, 'wat' => 1*3600,
+ 'west'=> 1*3600,
+ 'cest'=> 2*3600, 'eet' => 2*3600, 'fst' => 2*3600, 'mest'=> 2*3600,
+ 'mesz'=> 2*3600, 'sast'=> 2*3600, 'sst' => 2*3600,
+ 'bt' => 3*3600, 'eat' => 3*3600, 'eest'=> 3*3600, 'msk' => 3*3600,
+ 'msd' => 4*3600, 'zp4' => 4*3600,
+ 'zp5' => 5*3600, 'ist' => (5*3600+1800),
+ 'zp6' => 6*3600,
+ 'wast'=> 7*3600,
+ 'cct' => 8*3600, 'sgt' => 8*3600, 'wadt'=> 8*3600,
+ 'jst' => 9*3600, 'kst' => 9*3600,
+ 'east'=> 10*3600, 'gst' => 10*3600,
+ 'eadt'=> 11*3600,
+ 'idle'=> 12*3600, 'nzst'=> 12*3600, 'nzt' => 12*3600,
+ 'nzdt'=> 13*3600,
+
+ 'afghanistan' => 16200, 'alaskan' => -32400,
+ 'arab' => 10800, 'arabian' => 14400,
+ 'arabic' => 10800, 'atlantic' => -14400,
+ 'aus central' => 34200, 'aus eastern' => 36000,
+ 'azores' => -3600, 'canada central' => -21600,
+ 'cape verde' => -3600, 'caucasus' => 14400,
+ 'cen. australia' => 34200, 'central america' => -21600,
+ 'central asia' => 21600, 'central europe' => 3600,
+ 'central european' => 3600, 'central pacific' => 39600,
+ 'central' => -21600, 'china' => 28800,
+ 'dateline' => -43200, 'e. africa' => 10800,
+ 'e. australia' => 36000, 'e. europe' => 7200,
+ 'e. south america' => -10800, 'eastern' => -18000,
+ 'egypt' => 7200, 'ekaterinburg' => 18000,
+ 'fiji' => 43200, 'fle' => 7200,
+ 'greenland' => -10800, 'greenwich' => 0,
+ 'gtb' => 7200, 'hawaiian' => -36000,
+ 'india' => 19800, 'iran' => 12600,
+ 'jerusalem' => 7200, 'korea' => 32400,
+ 'mexico' => -21600, 'mid-atlantic' => -7200,
+ 'mountain' => -25200, 'myanmar' => 23400,
+ 'n. central asia' => 21600, 'nepal' => 20700,
+ 'new zealand' => 43200, 'newfoundland' => -12600,
+ 'north asia east' => 28800, 'north asia' => 25200,
+ 'pacific sa' => -14400, 'pacific' => -28800,
+ 'romance' => 3600, 'russian' => 10800,
+ 'sa eastern' => -10800, 'sa pacific' => -18000,
+ 'sa western' => -14400, 'samoa' => -39600,
+ 'se asia' => 25200, 'malay peninsula' => 28800,
+ 'south africa' => 7200, 'sri lanka' => 21600,
+ 'taipei' => 28800, 'tasmania' => 36000,
+ 'tokyo' => 32400, 'tonga' => 46800,
+ 'us eastern' => -18000, 'us mountain' => -25200,
+ 'vladivostok' => 36000, 'w. australia' => 28800,
+ 'w. central africa' => 3600, 'w. europe' => 3600,
+ 'west asia' => 18000, 'west pacific' => 36000,
+ 'yakutsk' => 32400
+ }
+
+ [MONTHS, DAYS, ABBR_MONTHS, ABBR_DAYS, ZONES].each do |x|
+ x.freeze
+ end
+
+ class BagStruct < Struct # :nodoc:
+
+ def to_hash
+ h = {}
+ members.each do |k|
+ unless /\A_/ =~ k.to_s || self[k].nil?
+ h[k] = self[k]
+ end
+ end
+ h
+ end
+
+ end
+
+ Bag = BagStruct.new(:year, :mon, :yday, :mday, :wday,
+ :cwyear, :cweek, :cwday,
+ :hour, :min, :sec, :sec_fraction,
+ :wnum0, :wnum1, :seconds,
+ :zone, :offset, :leftover,
+ :_cent, :_merid, :_comp)
+
+ end
+
+ def emit(e, f) # :nodoc:
+ case e
+ when Numeric
+ sign = %w(+ + -)[e <=> 0]
+ e = e.abs
+ end
+
+ s = e.to_s
+
+ if f[:s] && f[:p] == '0'
+ f[:w] -= 1
+ end
+
+ if f[:s] && f[:p] == "\s"
+ s[0,0] = sign
+ end
+
+ if f[:p] != '-'
+ s = s.rjust(f[:w], f[:p])
+ end
+
+ if f[:s] && f[:p] != "\s"
+ s[0,0] = sign
+ end
+
+ s = s.upcase if f[:u]
+ s = s.downcase if f[:d]
+ s
+ end
+
+ def emit_w(e, w, f) # :nodoc:
+ f[:w] = [f[:w], w].compact.max
+ emit(e, f)
+ end
+
+ def emit_n(e, w, f) # :nodoc:
+ f[:p] ||= '0'
+ emit_w(e, w, f)
+ end
+
+ def emit_sn(e, w, f) # :nodoc:
+ if e < 0
+ w += 1
+ f[:s] = true
+ end
+ emit_n(e, w, f)
+ end
+
+ def emit_z(e, w, f) # :nodoc:
+ w += 1
+ f[:s] = true
+ emit_n(e, w, f)
+ end
+
+ def emit_a(e, w, f) # :nodoc:
+ f[:p] ||= "\s"
+ emit_w(e, w, f)
+ end
+
+ def emit_ad(e, w, f) # :nodoc:
+ if f[:x]
+ f[:u] = true
+ f[:d] = false
+ end
+ emit_a(e, w, f)
+ end
+
+ def emit_au(e, w, f) # :nodoc:
+ if f[:x]
+ f[:u] = false
+ f[:d] = true
+ end
+ emit_a(e, w, f)
+ end
+
+ private :emit, :emit_w, :emit_n, :emit_sn, :emit_z,
+ :emit_a, :emit_ad, :emit_au
+
+ def strftime(fmt='%F')
+ fmt.gsub(/%([-_0^#]+)?(\d+)?([EO]?(?::{1,3}z|.))/m) do
+ f = {}
+ m = $&
+ s, w, c = $1, $2, $3
+ if s
+ s.scan(/./) do |k|
+ case k
+ when '-'; f[:p] = '-'
+ when '_'; f[:p] = "\s"
+ when '0'; f[:p] = '0'
+ when '^'; f[:u] = true
+ when '#'; f[:x] = true
+ end
+ end
+ end
+ if w
+ f[:w] = w.to_i
+ end
+ case c
+ when 'A'; emit_ad(DAYNAMES[wday], 0, f)
+ when 'a'; emit_ad(ABBR_DAYNAMES[wday], 0, f)
+ when 'B'; emit_ad(MONTHNAMES[mon], 0, f)
+ when 'b'; emit_ad(ABBR_MONTHNAMES[mon], 0, f)
+ when 'C', 'EC'; emit_sn((year / 100).floor, 2, f)
+ when 'c', 'Ec'; emit_a(strftime('%a %b %e %H:%M:%S %Y'), 0, f)
+ when 'D'; emit_a(strftime('%m/%d/%y'), 0, f)
+ when 'd', 'Od'; emit_n(mday, 2, f)
+ when 'e', 'Oe'; emit_a(mday, 2, f)
+ when 'F'
+ if m == '%F'
+ format('%.4d-%02d-%02d', year, mon, mday) # 4p
+ else
+ emit_a(strftime('%Y-%m-%d'), 0, f)
+ end
+ when 'G'; emit_sn(cwyear, 4, f)
+ when 'g'; emit_n(cwyear % 100, 2, f)
+ when 'H', 'OH'; emit_n(hour, 2, f)
+ when 'h'; emit_ad(strftime('%b'), 0, f)
+ when 'I', 'OI'; emit_n((hour % 12).nonzero? || 12, 2, f)
+ when 'j'; emit_n(yday, 3, f)
+ when 'k'; emit_a(hour, 2, f)
+ when 'L'
+ f[:p] = nil
+ w = f[:w] || 3
+ u = 10**w
+ emit_n((sec_fraction * u).floor, w, f)
+ when 'l'; emit_a((hour % 12).nonzero? || 12, 2, f)
+ when 'M', 'OM'; emit_n(min, 2, f)
+ when 'm', 'Om'; emit_n(mon, 2, f)
+ when 'N'
+ f[:p] = nil
+ w = f[:w] || 9
+ u = 10**w
+ emit_n((sec_fraction * u).floor, w, f)
+ when 'n'; emit_a("\n", 0, f)
+ when 'P'; emit_ad(strftime('%p').downcase, 0, f)
+ when 'p'; emit_au(if hour < 12 then 'AM' else 'PM' end, 0, f)
+ when 'Q'
+ s = ((ajd - UNIX_EPOCH_IN_AJD) / MILLISECONDS_IN_DAY).round
+ emit_sn(s, 1, f)
+ when 'R'; emit_a(strftime('%H:%M'), 0, f)
+ when 'r'; emit_a(strftime('%I:%M:%S %p'), 0, f)
+ when 'S', 'OS'; emit_n(sec, 2, f)
+ when 's'
+ s = ((ajd - UNIX_EPOCH_IN_AJD) / SECONDS_IN_DAY).round
+ emit_sn(s, 1, f)
+ when 'T'
+ if m == '%T'
+ format('%02d:%02d:%02d', hour, min, sec) # 4p
+ else
+ emit_a(strftime('%H:%M:%S'), 0, f)
+ end
+ when 't'; emit_a("\t", 0, f)
+ when 'U', 'W', 'OU', 'OW'
+ emit_n(if c[-1,1] == 'U' then wnum0 else wnum1 end, 2, f)
+ when 'u', 'Ou'; emit_n(cwday, 1, f)
+ when 'V', 'OV'; emit_n(cweek, 2, f)
+ when 'v'; emit_a(strftime('%e-%b-%Y'), 0, f)
+ when 'w', 'Ow'; emit_n(wday, 1, f)
+ when 'X', 'EX'; emit_a(strftime('%H:%M:%S'), 0, f)
+ when 'x', 'Ex'; emit_a(strftime('%m/%d/%y'), 0, f)
+ when 'Y', 'EY'; emit_sn(year, 4, f)
+ when 'y', 'Ey', 'Oy'; emit_n(year % 100, 2, f)
+ when 'Z'; emit_au(strftime('%:z'), 0, f)
+ when /\A(:{0,3})z/
+ t = $1.size
+ sign = if offset < 0 then -1 else +1 end
+ fr = offset.abs
+ ss = fr.div(SECONDS_IN_DAY) # 4p
+ hh, ss = ss.divmod(3600)
+ mm, ss = ss.divmod(60)
+ if t == 3
+ if ss.nonzero? then t = 2
+ elsif mm.nonzero? then t = 1
+ else t = -1
+ end
+ end
+ case t
+ when -1
+ tail = []
+ sep = ''
+ when 0
+ f[:w] -= 2 if f[:w]
+ tail = ['%02d' % mm]
+ sep = ''
+ when 1
+ f[:w] -= 3 if f[:w]
+ tail = ['%02d' % mm]
+ sep = ':'
+ when 2
+ f[:w] -= 6 if f[:w]
+ tail = ['%02d' % mm, '%02d' % ss]
+ sep = ':'
+ end
+ ([emit_z(sign * hh, 2, f)] + tail).join(sep)
+ when '%'; emit_a('%', 0, f)
+ when '+'; emit_a(strftime('%a %b %e %H:%M:%S %Z %Y'), 0, f)
+ else
+ m
+ end
+ end
+ end
+
+# alias_method :format, :strftime
+
+ def asctime() strftime('%c') end
+
+ alias_method :ctime, :asctime
+
+ def iso8601() strftime('%F') end
+
+ def rfc3339() strftime('%FT%T%:z') end
+
+ def xmlschema() iso8601 end # :nodoc:
+
+ def rfc2822() strftime('%a, %-d %b %Y %T %z') end
+
+ alias_method :rfc822, :rfc2822
+
+ def httpdate() new_offset(0).strftime('%a, %d %b %Y %T GMT') end # :nodoc:
+
+ def jisx0301
+ if jd < 2405160
+ strftime('%F')
+ else
+ case jd
+ when 2405160...2419614
+ g = 'M%02d' % (year - 1867)
+ when 2419614...2424875
+ g = 'T%02d' % (year - 1911)
+ when 2424875...2447535
+ g = 'S%02d' % (year - 1925)
+ else
+ g = 'H%02d' % (year - 1988)
+ end
+ g + strftime('.%m.%d')
+ end
+ end
+
+=begin
+ def beat(n=0)
+ i, f = (new_offset(HOURS_IN_DAY).day_fraction * 1000).divmod(1)
+ ('@%03d' % i) +
+ if n < 1
+ ''
+ else
+ '.%0*d' % [n, (f / Rational(1, 10**n)).round]
+ end
+ end
+=end
+
+ def self.num_pattern? (s) # :nodoc:
+ /\A%[EO]?[CDdeFGgHIjkLlMmNQRrSsTUuVvWwXxYy\d]/ =~ s || /\A\d/ =~ s
+ end
+
+ private_class_method :num_pattern?
+
+ def self._strptime_i(str, fmt, e) # :nodoc:
+ fmt.scan(/%([EO]?(?::{1,3}z|.))|(.)/m) do |s, c|
+ a = $&
+ if s
+ case s
+ when 'A', 'a'
+ return unless str.sub!(/\A(#{Format::DAYS.keys.join('|')})/io, '') ||
+ str.sub!(/\A(#{Format::ABBR_DAYS.keys.join('|')})/io, '')
+ val = Format::DAYS[$1.downcase] || Format::ABBR_DAYS[$1.downcase]
+ return unless val
+ e.wday = val
+ when 'B', 'b', 'h'
+ return unless str.sub!(/\A(#{Format::MONTHS.keys.join('|')})/io, '') ||
+ str.sub!(/\A(#{Format::ABBR_MONTHS.keys.join('|')})/io, '')
+ val = Format::MONTHS[$1.downcase] || Format::ABBR_MONTHS[$1.downcase]
+ return unless val
+ e.mon = val
+ when 'C', 'EC'
+ return unless str.sub!(if num_pattern?($')
+ then /\A([-+]?\d{1,2})/
+ else /\A([-+]?\d{1,})/
+ end, '')
+ val = $1.to_i
+ e._cent = val
+ when 'c', 'Ec'
+ return unless _strptime_i(str, '%a %b %e %H:%M:%S %Y', e)
+ when 'D'
+ return unless _strptime_i(str, '%m/%d/%y', e)
+ when 'd', 'e', 'Od', 'Oe'
+ return unless str.sub!(/\A( \d|\d{1,2})/, '')
+ val = $1.to_i
+ return unless (1..31) === val
+ e.mday = val
+ when 'F'
+ return unless _strptime_i(str, '%Y-%m-%d', e)
+ when 'G'
+ return unless str.sub!(if num_pattern?($')
+ then /\A([-+]?\d{1,4})/
+ else /\A([-+]?\d{1,})/
+ end, '')
+ val = $1.to_i
+ e.cwyear = val
+ when 'g'
+ return unless str.sub!(/\A(\d{1,2})/, '')
+ val = $1.to_i
+ return unless (0..99) === val
+ e.cwyear = val
+ e._cent ||= if val >= 69 then 19 else 20 end
+ when 'H', 'k', 'OH'
+ return unless str.sub!(/\A( \d|\d{1,2})/, '')
+ val = $1.to_i
+ return unless (0..24) === val
+ e.hour = val
+ when 'I', 'l', 'OI'
+ return unless str.sub!(/\A( \d|\d{1,2})/, '')
+ val = $1.to_i
+ return unless (1..12) === val
+ e.hour = val
+ when 'j'
+ return unless str.sub!(/\A(\d{1,3})/, '')
+ val = $1.to_i
+ return unless (1..366) === val
+ e.yday = val
+ when 'L'
+ return unless str.sub!(if num_pattern?($')
+ then /\A([-+]?\d{1,3})/
+ else /\A([-+]?\d{1,})/
+ end, '')
+# val = Rational($1.to_i, 10**3)
+ val = Rational($1.to_i, 10**$1.size)
+ e.sec_fraction = val
+ when 'M', 'OM'
+ return unless str.sub!(/\A(\d{1,2})/, '')
+ val = $1.to_i
+ return unless (0..59) === val
+ e.min = val
+ when 'm', 'Om'
+ return unless str.sub!(/\A(\d{1,2})/, '')
+ val = $1.to_i
+ return unless (1..12) === val
+ e.mon = val
+ when 'N'
+ return unless str.sub!(if num_pattern?($')
+ then /\A([-+]?\d{1,9})/
+ else /\A([-+]?\d{1,})/
+ end, '')
+# val = Rational($1.to_i, 10**9)
+ val = Rational($1.to_i, 10**$1.size)
+ e.sec_fraction = val
+ when 'n', 't'
+ return unless _strptime_i(str, "\s", e)
+ when 'P', 'p'
+ return unless str.sub!(/\A([ap])(?:m\b|\.m\.)/i, '')
+ e._merid = if $1.downcase == 'a' then 0 else 12 end
+ when 'Q'
+ return unless str.sub!(/\A(-?\d{1,})/, '')
+ val = Rational($1.to_i, 10**3)
+ e.seconds = val
+ when 'R'
+ return unless _strptime_i(str, '%H:%M', e)
+ when 'r'
+ return unless _strptime_i(str, '%I:%M:%S %p', e)
+ when 'S', 'OS'
+ return unless str.sub!(/\A(\d{1,2})/, '')
+ val = $1.to_i
+ return unless (0..60) === val
+ e.sec = val
+ when 's'
+ return unless str.sub!(/\A(-?\d{1,})/, '')
+ val = $1.to_i
+ e.seconds = val
+ when 'T'
+ return unless _strptime_i(str, '%H:%M:%S', e)
+ when 'U', 'W', 'OU', 'OW'
+ return unless str.sub!(/\A(\d{1,2})/, '')
+ val = $1.to_i
+ return unless (0..53) === val
+ e.__send__(if s[-1,1] == 'U' then :wnum0= else :wnum1= end, val)
+ when 'u', 'Ou'
+ return unless str.sub!(/\A(\d{1})/, '')
+ val = $1.to_i
+ return unless (1..7) === val
+ e.cwday = val
+ when 'V', 'OV'
+ return unless str.sub!(/\A(\d{1,2})/, '')
+ val = $1.to_i
+ return unless (1..53) === val
+ e.cweek = val
+ when 'v'
+ return unless _strptime_i(str, '%e-%b-%Y', e)
+ when 'w'
+ return unless str.sub!(/\A(\d{1})/, '')
+ val = $1.to_i
+ return unless (0..6) === val
+ e.wday = val
+ when 'X', 'EX'
+ return unless _strptime_i(str, '%H:%M:%S', e)
+ when 'x', 'Ex'
+ return unless _strptime_i(str, '%m/%d/%y', e)
+ when 'Y', 'EY'
+ return unless str.sub!(if num_pattern?($')
+ then /\A([-+]?\d{1,4})/
+ else /\A([-+]?\d{1,})/
+ end, '')
+ val = $1.to_i
+ e.year = val
+ when 'y', 'Ey', 'Oy'
+ return unless str.sub!(/\A(\d{1,2})/, '')
+ val = $1.to_i
+ return unless (0..99) === val
+ e.year = val
+ e._cent ||= if val >= 69 then 19 else 20 end
+ when 'Z', /\A:{0,3}z/
+ return unless str.sub!(/\A((?:gmt|utc?)?[-+]\d+(?:[,.:]\d+(?::\d+)?)?
+ |[[:alpha:].\s]+(?:standard|daylight)\s+time\b
+ |[[:alpha:]]+(?:\s+dst)?\b
+ )/ix, '')
+ val = $1
+ e.zone = val
+ offset = zone_to_diff(val)
+ e.offset = offset
+ when '%'
+ return unless str.sub!(/\A%/, '')
+ when '+'
+ return unless _strptime_i(str, '%a %b %e %H:%M:%S %Z %Y', e)
+ else
+ return unless str.sub!(Regexp.new('\\A' + Regexp.quote(a)), '')
+ end
+ else
+ case c
+ when /\A\s/
+ str.sub!(/\A\s+/, '')
+ else
+ return unless str.sub!(Regexp.new('\\A' + Regexp.quote(a)), '')
+ end
+ end
+ end
+ end
+
+ private_class_method :_strptime_i
+
+ def self._strptime(str, fmt='%F')
+ str = str.dup
+ e = Format::Bag.new
+ return unless _strptime_i(str, fmt, e)
+
+ if e._cent
+ if e.cwyear
+ e.cwyear += e._cent * 100
+ end
+ if e.year
+ e. year += e._cent * 100
+ end
+ end
+
+ if e._merid
+ if e.hour
+ e.hour %= 12
+ e.hour += e._merid
+ end
+ end
+
+ unless str.empty?
+ e.leftover = str
+ end
+
+ e.to_hash
+ end
+
+ def self.s3e(e, y, m, d, bc=false)
+ unless String === m
+ m = m.to_s
+ end
+
+ if y && m && !d
+ y, m, d = d, y, m
+ end
+
+ if y == nil
+ if d && d.size > 2
+ y = d
+ d = nil
+ end
+ if d && d[0,1] == "'"
+ y = d
+ d = nil
+ end
+ end
+
+ if y
+ y.scan(/(\d+)(.+)?/)
+ if $2
+ y, d = d, $1
+ end
+ end
+
+ if m
+ if m[0,1] == "'" || m.size > 2
+ y, m, d = m, d, y # us -> be
+ end
+ end
+
+ if d
+ if d[0,1] == "'" || d.size > 2
+ y, d = d, y
+ end
+ end
+
+ if y
+ y =~ /([-+])?(\d+)/
+ if $1 || $2.size > 2
+ c = false
+ end
+ iy = $&.to_i
+ if bc
+ iy = -iy + 1
+ end
+ e.year = iy
+ end
+
+ if m
+ m =~ /\d+/
+ e.mon = $&.to_i
+ end
+
+ if d
+ d =~ /\d+/
+ e.mday = $&.to_i
+ end
+
+ if c != nil
+ e._comp = c
+ end
+
+ end
+
+ private_class_method :s3e
+
+ def self._parse_day(str, e) # :nodoc:
+ if str.sub!(/\b(#{Format::ABBR_DAYS.keys.join('|')})[^-\d\s]*/io, ' ')
+ e.wday = Format::ABBR_DAYS[$1.downcase]
+ true
+=begin
+ elsif str.sub!(/\b(?!\dth)(su|mo|tu|we|th|fr|sa)\b/i, ' ')
+ e.wday = %w(su mo tu we th fr sa).index($1.downcase)
+ true
+=end
+ end
+ end
+
+ def self._parse_time(str, e) # :nodoc:
+ if str.sub!(
+ /(
+ (?:
+ \d+\s*:\s*\d+
+ (?:
+ \s*:\s*\d+(?:[,.]\d*)?
+ )?
+ |
+ \d+\s*h(?:\s*\d+m?(?:\s*\d+s?)?)?
+ )
+ (?:
+ \s*
+ [ap](?:m\b|\.m\.)
+ )?
+ |
+ \d+\s*[ap](?:m\b|\.m\.)
+ )
+ (?:
+ \s*
+ (
+ (?:gmt|utc?)?[-+]\d+(?:[,.:]\d+(?::\d+)?)?
+ |
+ [[:alpha:].\s]+(?:standard|daylight)\stime\b
+ |
+ [[:alpha:]]+(?:\sdst)?\b
+ )
+ )?
+ /ix,
+ ' ')
+
+ t = $1
+ e.zone = $2 if $2
+
+ t =~ /\A(\d+)h?
+ (?:\s*:?\s*(\d+)m?
+ (?:
+ \s*:?\s*(\d+)(?:[,.](\d+))?s?
+ )?
+ )?
+ (?:\s*([ap])(?:m\b|\.m\.))?/ix
+
+ e.hour = $1.to_i
+ e.min = $2.to_i if $2
+ e.sec = $3.to_i if $3
+ e.sec_fraction = Rational($4.to_i, 10**$4.size) if $4
+
+ if $5
+ e.hour %= 12
+ if $5.downcase == 'p'
+ e.hour += 12
+ end
+ end
+ true
+ end
+ end
+
+=begin
+ def self._parse_beat(str, e) # :nodoc:
+ if str.sub!(/@\s*(\d+)(?:[,.](\d*))?/, ' ')
+ beat = Rational($1.to_i)
+ beat += Rational($2.to_i, 10**$2.size) if $2
+ secs = Rational(beat, 1000)
+ h, min, s, fr = self.day_fraction_to_time(secs)
+ e.hour = h
+ e.min = min
+ e.sec = s
+ e.sec_fraction = fr * 86400
+ e.zone = '+01:00'
+ true
+ end
+ end
+=end
+
+ def self._parse_eu(str, e) # :nodoc:
+ if str.sub!(
+ /'?(\d+)[^-\d\s]*
+ \s*
+ (#{Format::ABBR_MONTHS.keys.join('|')})[^-\d\s']*
+ (?:
+ \s*
+ (c(?:e|\.e\.)|b(?:ce|\.c\.e\.)|a(?:d|\.d\.)|b(?:c|\.c\.))?
+ \s*
+ ('?-?\d+(?:(?:st|nd|rd|th)\b)?)
+ )?
+ /iox,
+ ' ') # '
+ s3e(e, $4, Format::ABBR_MONTHS[$2.downcase], $1,
+ $3 && $3[0,1].downcase == 'b')
+ true
+ end
+ end
+
+ def self._parse_us(str, e) # :nodoc:
+ if str.sub!(
+ /\b(#{Format::ABBR_MONTHS.keys.join('|')})[^-\d\s']*
+ \s*
+ ('?\d+)[^-\d\s']*
+ (?:
+ \s*
+ (c(?:e|\.e\.)|b(?:ce|\.c\.e\.)|a(?:d|\.d\.)|b(?:c|\.c\.))?
+ \s*
+ ('?-?\d+)
+ )?
+ /iox,
+ ' ') # '
+ s3e(e, $4, Format::ABBR_MONTHS[$1.downcase], $2,
+ $3 && $3[0,1].downcase == 'b')
+ true
+ end
+ end
+
+ def self._parse_iso(str, e) # :nodoc:
+ if str.sub!(/('?[-+]?\d+)-(\d+)-('?-?\d+)/, ' ')
+ s3e(e, $1, $2, $3)
+ true
+ end
+ end
+
+ def self._parse_iso2(str, e) # :nodoc:
+ if str.sub!(/\b(\d{2}|\d{4})?-?w(\d{2})(?:-?(\d))?\b/i, ' ')
+ e.cwyear = $1.to_i if $1
+ e.cweek = $2.to_i
+ e.cwday = $3.to_i if $3
+ true
+ elsif str.sub!(/-w-(\d)\b/i, ' ')
+ e.cwday = $1.to_i
+ true
+ elsif str.sub!(/--(\d{2})?-(\d{2})\b/, ' ')
+ e.mon = $1.to_i if $1
+ e.mday = $2.to_i
+ true
+ elsif str.sub!(/--(\d{2})(\d{2})?\b/, ' ')
+ e.mon = $1.to_i
+ e.mday = $2.to_i if $2
+ true
+ elsif /[,.](\d{2}|\d{4})-\d{3}\b/ !~ str &&
+ str.sub!(/\b(\d{2}|\d{4})-(\d{3})\b/, ' ')
+ e.year = $1.to_i
+ e.yday = $2.to_i
+ true
+ elsif /\d-\d{3}\b/ !~ str &&
+ str.sub!(/\b-(\d{3})\b/, ' ')
+ e.yday = $1.to_i
+ true
+ end
+ end
+
+ def self._parse_jis(str, e) # :nodoc:
+ if str.sub!(/\b([mtsh])(\d+)\.(\d+)\.(\d+)/i, ' ')
+ era = { 'm'=>1867,
+ 't'=>1911,
+ 's'=>1925,
+ 'h'=>1988
+ }[$1.downcase]
+ e.year = $2.to_i + era
+ e.mon = $3.to_i
+ e.mday = $4.to_i
+ true
+ end
+ end
+
+ def self._parse_vms(str, e) # :nodoc:
+ if str.sub!(/('?-?\d+)-(#{Format::ABBR_MONTHS.keys.join('|')})[^-]*
+ -('?-?\d+)/iox, ' ')
+ s3e(e, $3, Format::ABBR_MONTHS[$2.downcase], $1)
+ true
+ elsif str.sub!(/\b(#{Format::ABBR_MONTHS.keys.join('|')})[^-]*
+ -('?-?\d+)(?:-('?-?\d+))?/iox, ' ')
+ s3e(e, $3, Format::ABBR_MONTHS[$1.downcase], $2)
+ true
+ end
+ end
+
+ def self._parse_sla(str, e) # :nodoc:
+ if str.sub!(%r|('?-?\d+)/\s*('?\d+)(?:\D\s*('?-?\d+))?|, ' ') # '
+ s3e(e, $1, $2, $3)
+ true
+ end
+ end
+
+ def self._parse_dot(str, e) # :nodoc:
+ if str.sub!(%r|('?-?\d+)\.\s*('?\d+)\.\s*('?-?\d+)|, ' ') # '
+ s3e(e, $1, $2, $3)
+ true
+ end
+ end
+
+ def self._parse_year(str, e) # :nodoc:
+ if str.sub!(/'(\d+)\b/, ' ')
+ e.year = $1.to_i
+ true
+ end
+ end
+
+ def self._parse_mon(str, e) # :nodoc:
+ if str.sub!(/\b(#{Format::ABBR_MONTHS.keys.join('|')})\S*/io, ' ')
+ e.mon = Format::ABBR_MONTHS[$1.downcase]
+ true
+ end
+ end
+
+ def self._parse_mday(str, e) # :nodoc:
+ if str.sub!(/(\d+)(st|nd|rd|th)\b/i, ' ')
+ e.mday = $1.to_i
+ true
+ end
+ end
+
+ def self._parse_ddd(str, e) # :nodoc:
+ if str.sub!(
+ /([-+]?)(\d{2,14})
+ (?:
+ \s*
+ t?
+ \s*
+ (\d{2,6})?(?:[,.](\d*))?
+ )?
+ (?:
+ \s*
+ (
+ z\b
+ |
+ [-+]\d{1,4}\b
+ |
+ \[[-+]?\d[^\]]*\]
+ )
+ )?
+ /ix,
+ ' ')
+ case $2.size
+ when 2
+ if $3.nil? && $4
+ e.sec = $2[-2, 2].to_i
+ else
+ e.mday = $2[ 0, 2].to_i
+ end
+ when 4
+ if $3.nil? && $4
+ e.sec = $2[-2, 2].to_i
+ e.min = $2[-4, 2].to_i
+ else
+ e.mon = $2[ 0, 2].to_i
+ e.mday = $2[ 2, 2].to_i
+ end
+ when 6
+ if $3.nil? && $4
+ e.sec = $2[-2, 2].to_i
+ e.min = $2[-4, 2].to_i
+ e.hour = $2[-6, 2].to_i
+ else
+ e.year = ($1 + $2[ 0, 2]).to_i
+ e.mon = $2[ 2, 2].to_i
+ e.mday = $2[ 4, 2].to_i
+ end
+ when 8, 10, 12, 14
+ if $3.nil? && $4
+ e.sec = $2[-2, 2].to_i
+ e.min = $2[-4, 2].to_i
+ e.hour = $2[-6, 2].to_i
+ e.mday = $2[-8, 2].to_i
+ if $2.size >= 10
+ e.mon = $2[-10, 2].to_i
+ end
+ if $2.size == 12
+ e.year = ($1 + $2[-12, 2]).to_i
+ end
+ if $2.size == 14
+ e.year = ($1 + $2[-14, 4]).to_i
+ e._comp = false
+ end
+ else
+ e.year = ($1 + $2[ 0, 4]).to_i
+ e.mon = $2[ 4, 2].to_i
+ e.mday = $2[ 6, 2].to_i
+ e.hour = $2[ 8, 2].to_i if $2.size >= 10
+ e.min = $2[10, 2].to_i if $2.size >= 12
+ e.sec = $2[12, 2].to_i if $2.size >= 14
+ e._comp = false
+ end
+ when 3
+ if $3.nil? && $4
+ e.sec = $2[-2, 2].to_i
+ e.min = $2[-3, 1].to_i
+ else
+ e.yday = $2[ 0, 3].to_i
+ end
+ when 5
+ if $3.nil? && $4
+ e.sec = $2[-2, 2].to_i
+ e.min = $2[-4, 2].to_i
+ e.hour = $2[-5, 1].to_i
+ else
+ e.year = ($1 + $2[ 0, 2]).to_i
+ e.yday = $2[ 2, 3].to_i
+ end
+ when 7
+ if $3.nil? && $4
+ e.sec = $2[-2, 2].to_i
+ e.min = $2[-4, 2].to_i
+ e.hour = $2[-6, 2].to_i
+ e.mday = $2[-7, 1].to_i
+ else
+ e.year = ($1 + $2[ 0, 4]).to_i
+ e.yday = $2[ 4, 3].to_i
+ end
+ end
+ if $3
+ if $4
+ case $3.size
+ when 2, 4, 6
+ e.sec = $3[-2, 2].to_i
+ e.min = $3[-4, 2].to_i if $3.size >= 4
+ e.hour = $3[-6, 2].to_i if $3.size >= 6
+ end
+ else
+ case $3.size
+ when 2, 4, 6
+ e.hour = $3[ 0, 2].to_i
+ e.min = $3[ 2, 2].to_i if $3.size >= 4
+ e.sec = $3[ 4, 2].to_i if $3.size >= 6
+ end
+ end
+ end
+ if $4
+ e.sec_fraction = Rational($4.to_i, 10**$4.size)
+ end
+ if $5
+ e.zone = $5
+ if e.zone[0,1] == '['
+ o, n, = e.zone[1..-2].split(':')
+ e.zone = n || o
+ if /\A\d/ =~ o
+ o = format('+%s', o)
+ end
+ e.offset = zone_to_diff(o)
+ end
+ end
+ true
+ end
+ end
+
+ private_class_method :_parse_day, :_parse_time, # :_parse_beat,
+ :_parse_eu, :_parse_us, :_parse_iso, :_parse_iso2,
+ :_parse_jis, :_parse_vms, :_parse_sla, :_parse_dot,
+ :_parse_year, :_parse_mon, :_parse_mday, :_parse_ddd
+
+ def self._parse(str, comp=true)
+ str = str.dup
+
+ e = Format::Bag.new
+
+ e._comp = comp
+
+ str.gsub!(/[^-+',.\/:@[:alnum:]\[\]]+/, ' ')
+
+ _parse_time(str, e) # || _parse_beat(str, e)
+ _parse_day(str, e)
+
+ _parse_eu(str, e) ||
+ _parse_us(str, e) ||
+ _parse_iso(str, e) ||
+ _parse_jis(str, e) ||
+ _parse_vms(str, e) ||
+ _parse_sla(str, e) ||
+ _parse_dot(str, e) ||
+ _parse_iso2(str, e) ||
+ _parse_year(str, e) ||
+ _parse_mon(str, e) ||
+ _parse_mday(str, e) ||
+ _parse_ddd(str, e)
+
+ if str.sub!(/\b(bc\b|bce\b|b\.c\.|b\.c\.e\.)/i, ' ')
+ if e.year
+ e.year = -e.year + 1
+ end
+ end
+
+ if str.sub!(/\A\s*(\d{1,2})\s*\z/, ' ')
+ if e.hour && !e.mday
+ v = $1.to_i
+ if (1..31) === v
+ e.mday = v
+ end
+ end
+ if e.mday && !e.hour
+ v = $1.to_i
+ if (0..24) === v
+ e.hour = v
+ end
+ end
+ end
+
+ if e._comp
+ if e.cwyear
+ if e.cwyear >= 0 && e.cwyear <= 99
+ e.cwyear += if e.cwyear >= 69
+ then 1900 else 2000 end
+ end
+ end
+ if e.year
+ if e.year >= 0 && e.year <= 99
+ e.year += if e.year >= 69
+ then 1900 else 2000 end
+ end
+ end
+ end
+
+ e.offset ||= zone_to_diff(e.zone) if e.zone
+
+ e.to_hash
+ end
+
+ def self._iso8601(str) # :nodoc:
+ if /\A\s*(([-+]?\d{2,}|-)-\d{2}-\d{2}|
+ ([-+]?\d{2,})?-\d{3}|
+ (\d{2}|\d{4})?-w\d{2}-\d|
+ -w-\d)
+ (t
+ \d{2}:\d{2}(:\d{2}([,.]\d+)?)?
+ (z|[-+]\d{2}(:?\d{2})?)?)?\s*\z/ix =~ str
+ _parse(str)
+ elsif /\A\s*(([-+]?(\d{2}|\d{4})|--)\d{2}\d{2}|
+ ([-+]?(\d{2}|\d{4}))?\d{3}|-\d{3}|
+ (\d{2}|\d{4})?w\d{2}\d)
+ (t?
+ \d{2}\d{2}(\d{2}([,.]\d+)?)?
+ (z|[-+]\d{2}(\d{2})?)?)?\s*\z/ix =~ str
+ _parse(str)
+ elsif /\A\s*(\d{2}:\d{2}(:\d{2}([,.]\d+)?)?
+ (z|[-+]\d{2}(:?\d{2})?)?)?\s*\z/ix =~ str
+ _parse(str)
+ elsif /\A\s*(\d{2}\d{2}(\d{2}([,.]\d+)?)?
+ (z|[-+]\d{2}(\d{2})?)?)?\s*\z/ix =~ str
+ _parse(str)
+ end
+ end
+
+ def self._rfc3339(str) # :nodoc:
+ if /\A\s*-?\d{4}-\d{2}-\d{2} # allow minus, anyway
+ (t|\s)
+ \d{2}:\d{2}:\d{2}(\.\d+)?
+ (z|[-+]\d{2}:\d{2})\s*\z/ix =~ str
+ _parse(str)
+ end
+ end
+
+ def self._xmlschema(str) # :nodoc:
+ if /\A\s*(-?\d{4,})(?:-(\d{2})(?:-(\d{2}))?)?
+ (?:t
+ (\d{2}):(\d{2}):(\d{2})(?:\.(\d+))?)?
+ (z|[-+]\d{2}:\d{2})?\s*\z/ix =~ str
+ e = Format::Bag.new
+ e.year = $1.to_i
+ e.mon = $2.to_i if $2
+ e.mday = $3.to_i if $3
+ e.hour = $4.to_i if $4
+ e.min = $5.to_i if $5
+ e.sec = $6.to_i if $6
+ e.sec_fraction = Rational($7.to_i, 10**$7.size) if $7
+ if $8
+ e.zone = $8
+ e.offset = zone_to_diff($8)
+ end
+ e.to_hash
+ elsif /\A\s*(\d{2}):(\d{2}):(\d{2})(?:\.(\d+))?
+ (z|[-+]\d{2}:\d{2})?\s*\z/ix =~ str
+ e = Format::Bag.new
+ e.hour = $1.to_i if $1
+ e.min = $2.to_i if $2
+ e.sec = $3.to_i if $3
+ e.sec_fraction = Rational($4.to_i, 10**$4.size) if $4
+ if $5
+ e.zone = $5
+ e.offset = zone_to_diff($5)
+ end
+ e.to_hash
+ elsif /\A\s*(?:--(\d{2})(?:-(\d{2}))?|---(\d{2}))
+ (z|[-+]\d{2}:\d{2})?\s*\z/ix =~ str
+ e = Format::Bag.new
+ e.mon = $1.to_i if $1
+ e.mday = $2.to_i if $2
+ e.mday = $3.to_i if $3
+ if $4
+ e.zone = $4
+ e.offset = zone_to_diff($4)
+ end
+ e.to_hash
+ end
+ end
+
+ def self._rfc2822(str) # :nodoc:
+ if /\A\s*(?:(?:#{Format::ABBR_DAYS.keys.join('|')})\s*,\s+)?
+ \d{1,2}\s+
+ (?:#{Format::ABBR_MONTHS.keys.join('|')})\s+
+ -?(\d{2,})\s+ # allow minus, anyway
+ \d{2}:\d{2}(:\d{2})?\s*
+ (?:[-+]\d{4}|ut|gmt|e[sd]t|c[sd]t|m[sd]t|p[sd]t|[a-ik-z])\s*\z/iox =~ str
+ e = _parse(str, false)
+ if $1.size < 4
+ if e[:year] < 50
+ e[:year] += 2000
+ elsif e[:year] < 1000
+ e[:year] += 1900
+ end
+ end
+ e
+ end
+ end
+
+ class << self; alias_method :_rfc822, :_rfc2822 end
+
+ def self._httpdate(str) # :nodoc:
+ if /\A\s*(#{Format::ABBR_DAYS.keys.join('|')})\s*,\s+
+ \d{2}\s+
+ (#{Format::ABBR_MONTHS.keys.join('|')})\s+
+ -?\d{4}\s+ # allow minus, anyway
+ \d{2}:\d{2}:\d{2}\s+
+ gmt\s*\z/iox =~ str
+ _rfc2822(str)
+ elsif /\A\s*(#{Format::DAYS.keys.join('|')})\s*,\s+
+ \d{2}\s*-\s*
+ (#{Format::ABBR_MONTHS.keys.join('|')})\s*-\s*
+ \d{2}\s+
+ \d{2}:\d{2}:\d{2}\s+
+ gmt\s*\z/iox =~ str
+ _parse(str)
+ elsif /\A\s*(#{Format::ABBR_DAYS.keys.join('|')})\s+
+ (#{Format::ABBR_MONTHS.keys.join('|')})\s+
+ \d{1,2}\s+
+ \d{2}:\d{2}:\d{2}\s+
+ \d{4}\s*\z/iox =~ str
+ _parse(str)
+ end
+ end
+
+ def self._jisx0301(str) # :nodoc:
+ if /\A\s*[mtsh]?\d{2}\.\d{2}\.\d{2}
+ (t
+ (\d{2}:\d{2}(:\d{2}([,.]\d*)?)?
+ (z|[-+]\d{2}(:?\d{2})?)?)?)?\s*\z/ix =~ str
+ if /\A\s*\d/ =~ str
+ _parse(str.sub(/\A\s*(\d)/, 'h\1'))
+ else
+ _parse(str)
+ end
+ else
+ _iso8601(str)
+ end
+ end
+
+ t = Module.new do
+
+ private
+
+ def zone_to_diff(zone) # :nodoc:
+ zone = zone.downcase
+ if zone.sub!(/\s+(standard|daylight)\s+time\z/, '')
+ dst = $1 == 'daylight'
+ else
+ dst = zone.sub!(/\s+dst\z/, '')
+ end
+ if Format::ZONES.include?(zone)
+ offset = Format::ZONES[zone]
+ offset += 3600 if dst
+ elsif zone.sub!(/\A(?:gmt|utc?)?([-+])/, '')
+ sign = $1
+ if zone.include?(':')
+ hour, min, sec, = zone.split(':')
+ elsif zone.include?(',') || zone.include?('.')
+ hour, fr, = zone.split(/[,.]/)
+ min = Rational(fr.to_i, 10**fr.size) * 60
+ else
+ case zone.size
+ when 3
+ hour = zone[0,1]
+ min = zone[1,2]
+ else
+ hour = zone[0,2]
+ min = zone[2,2]
+ sec = zone[4,2]
+ end
+ end
+ offset = hour.to_i * 3600 + min.to_i * 60 + sec.to_i
+ offset *= -1 if sign == '-'
+ end
+ offset
+ end
+
+ end
+
+ extend t
+ include t
+
+end
+
+class DateTime < Date
+
+ def strftime(fmt='%FT%T%:z')
+ super(fmt)
+ end
+
+ def self._strptime(str, fmt='%FT%T%z')
+ super(str, fmt)
+ end
+
+ def iso8601_timediv(n) # :nodoc:
+ strftime('T%T' +
+ if n < 1
+ ''
+ else
+ '.%0*d' % [n, (sec_fraction / Rational(1, 10**n)).round]
+ end +
+ '%:z')
+ end
+
+ private :iso8601_timediv
+
+ def iso8601(n=0)
+ super() + iso8601_timediv(n)
+ end
+
+ def rfc3339(n=0) iso8601(n) end
+
+ def xmlschema(n=0) iso8601(n) end # :nodoc:
+
+ def jisx0301(n=0)
+ super() + iso8601_timediv(n)
+ end
+
+end