synchronized with date2 3.5.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5494 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/date.rb

@@ -1,12 +1,12 @@
 #
 # date.rb - date and time library
 #
-# Author: Tadayoshi Funaba 1998-2002
+# Author: Tadayoshi Funaba 1998-2004
 #
 # Documentation: William Webber <william@williamwebber.com>
 #
 #--
-# $Id: date.rb,v 2.8 2002-06-08 00:39:51+09 tadf Exp $
+# $Id: date.rb,v 2.11 2004-01-19 04:56:12+09 tadf Exp $
 #++
 #
 # == Overview
@@ -817,13 +817,7 @@ class Date
 
   private :hour, :min, :sec, :sec_fraction
 
-  def zone
-    ['Z',
-      format('%+.2d%02d',
-	     (@of     / (1.to_r/24)).to_i,
-	     (@of.abs % (1.to_r/24) / (1.to_r/1440)).to_i)
-    ][@of<=>0]
-  end
+  def zone() strftime('%Z') end
 
   private :zone
 
@@ -1266,9 +1260,7 @@ class DateTime < Date
     a = i.to_a[0..5].reverse
     jd = civil_to_jd(*(a[0,3] << sg))
     fr = time_to_day_fraction(*(a[3,3])) + i.usec.to_r/86400000000
-    d = Time.gm(*i.to_a).to_i - i.to_i
-    d += d / d.abs if d.nonzero?
-    of = (d / 60).to_r/1440
+    of = i.utc_offset.to_r/86400
     new0(jd_to_ajd(jd, fr, of), of, sg)
   end
 

lib/date/format.rb

@@ -1,5 +1,5 @@
-# format.rb: Written by Tadayoshi Funaba 1999-2003
-# $Id: format.rb,v 2.9 2003-04-19 19:19:35+09 tadf Exp $
+# format.rb: Written by Tadayoshi Funaba 1999-2004
+# $Id: format.rb,v 2.12 2004-01-19 05:43:28+09 tadf Exp $
 
 class Date
 
@@ -501,8 +501,14 @@ class Date
       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 '%Z'; o << (if offset.zero? then 'Z' else strftime('%z') end)
+      when '%z'							# ID
+	o << if offset < 0 then '-' else '+' end
+	of = offset.abs
+	hh, fr = of.divmod(1.to_r/24)
+	mm = fr / (1.to_r/1440)
+	o << '%02d' % hh
+	o << '%02d' % mm
       when '%%'; o << '%'
       when '%+'; o << strftime('%a %b %e %H:%M:%S %Z %Y')	# TZ
       when '%1'; o <<   '%d' % jd

sample/cal.rb

@@ -1,12 +1,13 @@
 #! /usr/bin/env ruby
 
-# cal.rb: Written by Tadayoshi Funaba 1998-2002
-# $Id: cal.rb,v 2.4 2002-06-08 00:40:29+09 tadf Exp $
+# cal.rb: Written by Tadayoshi Funaba 1998-2004
+# $Id: cal.rb,v 2.7 2004-01-10 23:52:51+09 tadf Exp $
 
 require 'date'
-require 'getopts'
 
-$tab =
+class Cal
+
+  START =
     {
     'cn' => true,    # China
     'de' => 2342032, # Germany (protestant states)
@@ -29,35 +30,50 @@ $tab =
     'ns' => true     # (new style)
   }
 
-$cc = 'gb'
+  DEFAULT_START = 'gb'
 
-def usage
-  warn 'usage: cal [-c iso3166] [-jmty] [[month] year]'
-  exit 1
+  def initialize
+    opt_j; opt_m; opt_t; opt_y; opt_c
   end
 
-def pict(y, m, sg)
-  d = (1..31).detect{|d| Date.valid_date?(y, m, d, sg)}
-  fi = Date.new(y, m, d, sg)
-  fi -= (fi.jd - $k + 1) % 7
+  def opt_j(flag=false) @opt_j = flag end
+  def opt_m(flag=false) @opt_m = flag end
+  def opt_t(flag=false) @opt_t = flag end
+  def opt_y(flag=false) @opt_y = flag end
+
+  def opt_c(arg=DEFAULT_START) @start = START[arg] end
+
+  def set_params
+    @dw = if @opt_j then 3 else 2 end
+    @mw = (@dw + 1) * 7 - 1
+    @mn = if @opt_j then 2 else 3 end
+    @tw = (@mw + 2) * @mn - 2
+    @k  = if @opt_m then 1 else 0 end
+    @da = if @opt_j then :yday else :mday end
+  end
+
+  def pict(y, m)
+    d = (1..31).detect{|d| Date.valid_date?(y, m, d, @start)}
+    fi = Date.new(y, m, d, @start)
+    fi -= (fi.jd - @k + 1) % 7
 
     ve  = (fi..fi +  6).collect{|cu|
       %w(S M Tu W Th F S)[cu.wday]
     }
     ve += (fi..fi + 41).collect{|cu|
-    if cu.mon == m then cu.send($da) end.to_s
+      if cu.mon == m then cu.send(@da) end.to_s
     }
 
-  ve = ve.collect{|e| e.rjust($dw)}
+    ve = ve.collect{|e| e.rjust(@dw)}
 
     gr = group(ve, 7)
-  gr = trans(gr) if $OPT_t
+    gr = trans(gr) if @opt_t
     ta = gr.collect{|xs| xs.join(' ')}
 
     ca = %w(January February March April May June July
 	    August September October November December)[m - 1]
-  ca = ca + ' ' + y.to_s if not $OPT_y
-  ca = ca.center($mw)
+    ca = ca + ' ' + y.to_s if not @opt_y
+    ca = ca.center(@mw)
 
     ta.unshift(ca)
   end
@@ -70,19 +86,49 @@ def trans(xs)
     (0..xs[0].size - 1).collect{|i| xs.collect{|x| x[i]}}
   end
 
-def unite(xs)
-  if xs.empty? then [] else xs[0] + unite(xs[1..-1]) end
+  def stack(xs)
+    if xs.empty? then [] else xs[0] + stack(xs[1..-1]) end
   end
 
   def block(xs, n)
-  unite(group(xs, n).collect{|ys| trans(ys).collect{|zs| zs.join('  ')}})
+    stack(group(xs, n).collect{|ys| trans(ys).collect{|zs| zs.join('  ')}})
   end
 
   def unlines(xs)
     xs.collect{|x| x + "\n"}.join
   end
 
-usage unless getopts('jmty', "c:#{$cc}")
+  def monthly(y, m)
+    unlines(pict(y, m))
+  end
+
+  def addmon(y, m, n)
+    y, m = (y * 12 + (m - 1) + n).divmod(12)
+    return y, m + 1
+  end
+
+  def yearly(y)
+    y.to_s.center(@tw) + "\n\n" +
+      unlines(block((0..11).collect{|n| pict(*addmon(y, 1, n))}, @mn)) + "\n"
+  end
+
+  def print(y, m)
+    set_params
+    if @opt_y then yearly(y) else monthly(y, m) end
+  end
+
+end
+
+if __FILE__ == $0
+
+  require 'getopts'
+
+  def usage
+    warn 'usage: cal [-c iso3166] [-jmty] [[month] year]'
+    exit 1
+  end
+
+  usage unless getopts('jmty', "c:#{Cal::DEFAULT_START}")
 
   y, m = ARGV.values_at(1, 0).compact.collect{|x| x.to_i}
   $OPT_y ||= (y and not m)
@@ -93,19 +139,16 @@ m ||= to.mon
 
   usage unless m >= 1 and m <= 12
   usage unless y >= -4712
-usage if (sg = $tab[$OPT_c]).nil?
+  usage if Cal::START[$OPT_c].nil?
 
-$dw = if $OPT_j then 3 else 2 end
-$mw = ($dw + 1) * 7 - 1
-$mn = if $OPT_j then 2 else 3 end
-$tw = ($mw + 2) * $mn - 2
+  cal = Cal.new
 
-$k  = if $OPT_m then 1 else 0 end
-$da = if $OPT_j then :yday else :mday end
+  cal.opt_j($OPT_j)
+  cal.opt_m($OPT_m)
+  cal.opt_t($OPT_t)
+  cal.opt_y($OPT_y)
+  cal.opt_c($OPT_c)
 
-print(if not $OPT_y
-	unlines(pict(y, m, sg))
-      else
-	y.to_s.center($tw) + "\n\n" +
-	  unlines(block((1..12).collect{|m| pict(y, m, sg)}, $mn)) + "\n"
-      end)
+  print cal.print(y, m)
+
+end