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-rw-r--r--lib/date/format.rb529
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diff --git a/lib/date/format.rb b/lib/date/format.rb
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+# format.rb: Written by Tadayoshi Funaba 1999-2002
+# $Id: format.rb,v 2.7 2002-05-17 21:20:28+09 tadf Exp $
+
+class Date
+
+ 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, 'bst' => 1*3600, 'wat' => -1*3600,
+ 'at' => -2*3600, 'ast' => -4*3600, 'adt' => -3*3600, 'yst' => -9*3600,
+ 'ydt' => -8*3600, 'hst' =>-10*3600, 'hdt' => -9*3600, 'cat' =>-10*3600,
+ 'ahst'=>-10*3600, 'nt' =>-11*3600, 'idlw'=>-12*3600, 'cet' => 1*3600,
+ 'met' => 1*3600, 'mewt'=> 1*3600, 'mest'=> 2*3600, 'mesz'=> 2*3600,
+ 'swt' => 1*3600, 'sst' => 2*3600, 'fwt' => 1*3600, 'fst' => 2*3600,
+ 'eet' => 2*3600, 'bt' => 3*3600, 'zp4' => 4*3600, 'zp5' => 5*3600,
+ 'zp6' => 6*3600, 'wast'=> 7*3600, 'wadt'=> 8*3600, 'cct' => 8*3600,
+ 'jst' => 9*3600, 'east'=> 10*3600, 'eadt'=> 11*3600, 'gst' => 10*3600,
+ 'nzt' => 12*3600, 'nzst'=> 12*3600, 'nzdt'=> 13*3600, 'idle'=> 12*3600
+ }
+
+ def self.__strptime(str, fmt, elem)
+ fmt.scan(/%[EO]?.|./o) do |c|
+ cc = c.sub(/\A%[EO]?(.)\Z/o, '%\\1')
+ case cc
+ when /\A\s/o
+ str.sub!(/\A[\s\v]+/o, '')
+ when '%A', '%a'
+ return unless str.sub!(/\A([a-z]+)\b/io, '')
+ val = DAYS[$1.downcase] || ABBR_DAYS[$1.downcase]
+ return unless val
+ elem[:wday] = val
+ when '%B', '%b', '%h'
+ return unless str.sub!(/\A([a-z]+)\b/io, '')
+ val = MONTHS[$1.downcase] || ABBR_MONTHS[$1.downcase]
+ return unless val
+ elem[:mon] = val
+ when '%C'
+ return unless str.sub!(/\A(\d+)/o, '')
+ val = $1.to_i
+ elem[:cent] = val
+ when '%c'
+ return unless __strptime(str, '%a %b %e %H:%M:%S %Y', elem)
+ when '%D'
+ return unless __strptime(str, '%m/%d/%y', elem)
+ when '%d', '%e'
+ return unless str.sub!(/\A ?(\d+)/o, '')
+ val = $1.to_i
+ return unless (1..31) === val
+ elem[:mday] = val
+ when '%F'
+ return unless __strptime(str, '%Y-%m-%d', elem)
+ when '%G'
+ return unless str.sub!(/\A([-+]?\d+)/o, '')
+ val = $1.to_i
+ elem[:cwyear] = val
+ when '%g'
+ return unless str.sub!(/\A(\d+)/o, '')
+ val = $1.to_i
+ return unless (0..99) === val
+ elem[:cwyear] = val
+ elem[:cent] ||= if val >= 69 then 19 else 20 end
+ when '%H', '%k'
+ return unless str.sub!(/\A ?(\d+)/o, '')
+ val = $1.to_i
+ return unless (0..24) === val
+ elem[:hour] = val
+ when '%I', '%l'
+ return unless str.sub!(/\A ?(\d+)/o, '')
+ val = $1.to_i
+ return unless (1..12) === val
+ elem[:hour] = val
+ when '%j'
+ return unless str.sub!(/\A(\d+)/o, '')
+ val = $1.to_i
+ return unless (1..366) === val
+ elem[:yday] = val
+ when '%M'
+ return unless str.sub!(/\A(\d+)/o, '')
+ val = $1.to_i
+ return unless (0..59) === val
+ elem[:min] = val
+ when '%m'
+ return unless str.sub!(/\A(\d+)/o, '')
+ val = $1.to_i
+ return unless (1..12) === val
+ elem[:mon] = val
+ when '%n'
+ return unless __strptime(str, ' ', elem)
+ when '%p', '%P'
+ return unless str.sub!(/\A([ap])(?:m\b|\.m\.)/io, '')
+ elem[:merid] = if $1.downcase == 'a' then 0 else 12 end
+ when '%R'
+ return unless __strptime(str, '%H:%M', elem)
+ when '%r'
+ return unless __strptime(str, '%I:%M:%S %p', elem)
+ when '%S'
+ return unless str.sub!(/\A(\d+)/o, '')
+ val = $1.to_i
+ return unless (0..60) === val
+ elem[:sec] = val
+ when '%s'
+ return unless str.sub!(/\A(\d+)/o, '')
+ val = $1.to_i
+ elem[:seconds] = val
+ when '%T'
+ return unless __strptime(str, '%H:%M:%S', elem)
+ when '%t'
+ return unless __strptime(str, ' ', elem)
+ when '%U', '%W'
+ return unless str.sub!(/\A(\d+)/o, '')
+ val = $1.to_i
+ return unless (0..53) === val
+ elem[if c == '%U' then :wnum0 else :wnum1 end] = val
+ when '%u'
+ return unless str.sub!(/\A(\d+)/o, '')
+ val = $1.to_i
+ return unless (1..7) === val
+ elem[:cwday] = val
+ when '%V'
+ return unless str.sub!(/\A(\d+)/o, '')
+ val = $1.to_i
+ return unless (1..53) === val
+ elem[:cweek] = val
+ when '%v'
+ return unless __strptime(str, '%e-%b-%Y', elem)
+ when '%w'
+ return unless str.sub!(/\A(\d+)/o, '')
+ val = $1.to_i
+ return unless (0..6) === val
+ elem[:wday] = val
+ when '%X'
+ return unless __strptime(str, '%H:%M:%S', elem)
+ when '%x'
+ return unless __strptime(str, '%m/%d/%y', elem)
+ when '%Y'
+ return unless str.sub!(/\A([-+]?\d+)/o, '')
+ val = $1.to_i
+ elem[:year] = val
+ when '%y'
+ return unless str.sub!(/\A(\d+)/o, '')
+ val = $1.to_i
+ return unless (0..99) === val
+ elem[:year] = val
+ elem[:cent] ||= if val >= 69 then 19 else 20 end
+ when '%Z', '%z'
+ return unless str.sub!(/\A([a-z0-9:+-]+(?:\s+dst\b)?)/io, '')
+ val = $1
+ elem[:zone] = val
+ offset = zone_to_diff(val)
+ elem[:offset] = offset
+ when '%%'
+ return unless str.sub!(/\A%/o, '')
+ when '%+'
+ return unless __strptime(str, '%a %b %e %H:%M:%S %Z %Y', elem)
+ when '%1'
+ return unless str.sub!(/\A(\d+)/o, '')
+ val = $1.to_i
+ elem[:jd] = val
+ when '%2'
+ return unless __strptime(str, '%Y-%j', elem)
+ when '%3'
+ return unless __strptime(str, '%F', elem)
+ else
+ return unless str.sub!(Regexp.new('\\A' + Regexp.quote(c)), '')
+ end
+ end
+
+ if cent = elem.delete(:cent)
+ if elem[:cwyear]
+ elem[:cwyear] += cent * 100
+ end
+ if elem[:year]
+ elem[:year] += cent * 100
+ end
+ end
+
+ if merid = elem.delete(:merid)
+ if elem[:hour]
+ elem[:hour] %= 12
+ elem[:hour] += merid
+ end
+ end
+
+ str
+ end
+
+ private_class_method :__strptime
+
+ def self._strptime(str, fmt='%F')
+ elem = {}
+ elem if __strptime(str.dup, fmt, elem)
+ end
+
+ PARSE_MONTHPAT = ABBR_MONTHS.keys.join('|')
+ PARSE_DAYPAT = ABBR_DAYS. keys.join('|')
+
+ def self._parse(str, comp=false)
+ str = str.dup
+
+ str.gsub!(/[^-+.\/:0-9a-z]+/ino, ' ')
+
+ # day
+ if str.sub!(/(#{PARSE_DAYPAT})\S*/ino, ' ')
+ wday = ABBR_DAYS[$1.downcase]
+ end
+
+ # time
+ if str.sub!(
+ /(\d+):(\d+)(?::(\d+))?
+ (?:
+ \s*
+ ([ap])(?:m\b|\.m\.)
+ )?
+ (?:
+ \s*
+ (
+ [a-z]+(?:\s+dst)?\b
+ |
+ [-+]\d+(?::?\d+)
+ )
+ )?
+ /inox,
+ ' ')
+ hour = $1.to_i
+ min = $2.to_i
+ sec = $3.to_i if $3
+
+ if $4
+ hour %= 12
+ if $4.downcase == 'p'
+ hour += 12
+ end
+ end
+
+ zone = $5
+ end
+
+ # eu
+ if str.sub!(
+ /(\d+)\S*
+ \s+
+ (#{PARSE_MONTHPAT})\S*
+ (?:
+ \s+
+ (-?\d+)
+ )?
+ /inox,
+ ' ')
+ mday = $1.to_i
+ mon = ABBR_MONTHS[$2.downcase]
+
+ if $3
+ year = $3.to_i
+ if $3.size > 2
+ comp = false
+ end
+ end
+
+ # us
+ elsif str.sub!(
+ /(#{PARSE_MONTHPAT})\S*
+ \s+
+ (\d+)\S*
+ (?:
+ \s+
+ (-?\d+)
+ )?
+ /inox,
+ ' ')
+ mon = ABBR_MONTHS[$1.downcase]
+ mday = $2.to_i
+
+ if $3
+ year = $3.to_i
+ if $3.size > 2
+ comp = false
+ end
+ end
+
+ # iso
+ elsif str.sub!(/([-+]?\d+)-(\d+)-(-?\d+)/no, ' ')
+ year = $1.to_i
+ mon = $2.to_i
+ mday = $3.to_i
+
+ if $1.size > 2
+ comp = false
+ elsif $3.size > 2
+ comp = false
+ mday, mon, year = year, mon, mday
+ end
+
+ # jis
+ elsif str.sub!(/([MTSH])(\d+)\.(\d+)\.(\d+)/no, ' ')
+ e = { 'M'=>1867,
+ 'T'=>1911,
+ 'S'=>1925,
+ 'H'=>1988
+ }[$1]
+ year = $2.to_i + e
+ mon = $3.to_i
+ mday = $4.to_i
+
+ # vms
+ elsif str.sub!(/(-?\d+)-(#{PARSE_MONTHPAT})[^-]*-(-?\d+)/ino, ' ')
+ mday = $1.to_i
+ mon = ABBR_MONTHS[$2.downcase]
+ year = $3.to_i
+
+ if $1.size > 2
+ comp = false
+ year, mon, mday = mday, mon, year
+ elsif $3.size > 2
+ comp = false
+ end
+
+ # sla
+ elsif str.sub!(%r|(-?\d+)/(\d+)(?:/(-?\d+))?|no, ' ')
+ mon = $1.to_i
+ mday = $2.to_i
+
+ if $3
+ year = $3.to_i
+ if $3.size > 2
+ comp = false
+ end
+ end
+
+ if $1.size > 2
+ comp = false
+ year, mon, mday = mon, mday, year
+ end
+
+ # ddd
+ elsif str.sub!(
+ /([-+]?)(\d{4,14})
+ (?:
+ \s*
+ T?
+ \s*
+ (\d{2,6})
+ )?
+ (?:
+ \s*
+ (
+ Z
+ |
+ [-+]\d{2,4}
+ )
+ \b
+ )?
+ /nox,
+ ' ')
+ case $2.size
+ when 4
+ mon = $2[ 0, 2].to_i
+ mday = $2[ 2, 2].to_i
+ when 6
+ year = ($1 + $2[ 0, 2]).to_i
+ mon = $2[ 2, 2].to_i
+ mday = $2[ 4, 2].to_i
+ when 8, 10, 12, 14
+ year = ($1 + $2[ 0, 4]).to_i
+ mon = $2[ 4, 2].to_i
+ mday = $2[ 6, 2].to_i
+ hour = $2[ 8, 2].to_i if $2.size >= 10
+ min = $2[10, 2].to_i if $2.size >= 12
+ sec = $2[12, 2].to_i if $2.size >= 14
+ comp = false
+ end
+ if $3
+ case $3.size
+ when 2, 4, 6
+ hour = $3[ 0, 2].to_i
+ min = $3[ 2, 2].to_i if $3.size >= 4
+ sec = $3[ 4, 2].to_i if $3.size >= 6
+ end
+ end
+ zone = $4
+ end
+
+ if comp and year
+ if year >= 0 and year <= 99
+ if year >= 69
+ year += 1900
+ else
+ year += 2000
+ end
+ end
+ end
+
+ elem = {}
+ elem[:year] = year if year
+ elem[:mon] = mon if mon
+ elem[:mday] = mday if mday
+ elem[:hour] = hour if hour
+ elem[:min] = min if min
+ elem[:sec] = sec if sec
+ elem[:zone] = zone if zone
+ offset = zone_to_diff(zone) if zone
+ elem[:offset] = offset if offset
+ elem[:wday] = wday if wday
+ elem
+ end
+
+ def self.zone_to_diff(str)
+ abb, dst = str.downcase.split(/\s+/o, 2)
+ if ZONES.include?(abb)
+ offset = ZONES[abb]
+ offset += 3600 if dst
+ elsif /\A([+-])(\d{2}):?(\d{2})?\Z/no =~ str
+ offset = $2.to_i * 3600 + $3.to_i * 60
+ offset *= -1 if $1 == '-'
+ end
+ offset
+ end
+
+ def strftime(fmt='%F')
+ o = ''
+ fmt.scan(/%[EO]?.|./o) do |c|
+ cc = c.sub(/^%[EO]?(.)$/o, '%\\1')
+ case cc
+ when '%A'; o << DAYNAMES[wday]
+ when '%a'; o << ABBR_DAYNAMES[wday]
+ when '%B'; o << MONTHNAMES[mon]
+ when '%b'; o << ABBR_MONTHNAMES[mon]
+ when '%C'; o << '%02d' % (year / 100.0).floor # P2,ID
+ when '%c'; o << strftime('%a %b %e %H:%M:%S %Y')
+ when '%D'; o << strftime('%m/%d/%y') # P2,ID
+ when '%d'; o << '%02d' % mday
+ when '%e'; o << '%2d' % mday
+ when '%F'; o << strftime('%Y-%m-%d') # ID
+ when '%G'; o << '%.4d' % cwyear # ID
+ when '%g'; o << '%02d' % (cwyear % 100) # ID
+ when '%H'; o << '%02d' % hour
+ when '%h'; o << strftime('%b') # P2,ID
+ when '%I'; o << '%02d' % ((hour % 12).nonzero? or 12)
+ when '%j'; o << '%03d' % yday
+ when '%k'; o << '%2d' % hour # AR,TZ,GL
+ when '%l'; o << '%2d' % ((hour % 12).nonzero? or 12) # AR,TZ,GL
+ when '%M'; o << '%02d' % min
+ when '%m'; o << '%02d' % mon
+ when '%n'; o << "\n" # P2,ID
+ when '%P'; o << if hour < 12 then 'am' else 'pm' end # GL
+ when '%p'; o << if hour < 12 then 'AM' else 'PM' end
+ when '%R'; o << strftime('%H:%M') # ID
+ when '%r'; o << strftime('%I:%M:%S %p') # P2,ID
+ when '%S'; o << '%02d' % sec
+ when '%s' # TZ,GL
+ d = rjd - type.jd_to_rjd(type.civil_to_jd(1970,1,1), 0)
+ s = (d * 86400).to_i
+ o << '%d' % s
+ when '%T'; o << strftime('%H:%M:%S') # P2,ID
+ when '%t'; o << "\t" # P2,ID
+ when '%U', '%W'
+ a = type.civil_to_jd(year, 1, 1, ns?) + 6
+ k = if c == '%U' then 0 else 1 end
+ w = (jd - (a - ((a - k) + 1) % 7) + 7) / 7
+ o << '%02d' % w
+ when '%u'; o << '%d' % cwday # P2,ID
+ when '%V'; o << '%02d' % cweek # P2,ID
+ when '%v'; o << strftime('%e-%b-%Y') # AR,TZ
+ when '%w'; o << '%d' % wday
+ when '%X'; o << strftime('%H:%M:%S')
+ when '%x'; o << strftime('%m/%d/%y')
+ when '%Y'; o << '%.4d' % year
+ when '%y'; o << '%02d' % (year % 100)
+ when '%Z'; o << zone
+ when '%z'; o << zone # ID
+ when '%%'; o << '%'
+ when '%+'; o << strftime('%a %b %e %H:%M:%S %Z %Y') # TZ
+ when '%1'; o << '%d' % jd
+ when '%2'; o << strftime('%Y-%j')
+ when '%3'; o << strftime('%Y-%m-%d')
+ else; o << c
+ end
+ end
+ o
+ end
+
+# alias_method :format, :strftime
+
+ def asctime() strftime('%c') end
+
+ alias_method :ctime, :asctime
+
+end
+
+class DateTime < Date
+
+ def self._strptime(str, fmt='%FT%T%Z')
+ super(str, fmt)
+ end
+
+ def strftime(fmt='%FT%T%Z')
+ super(fmt)
+ end
+
+end