updated based on date2 3.9.7.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@11279 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Sun Nov  5 19:52:19 2006  Tadayoshi Funaba  <tadf@dotrb.org>
+
+	* lib/date.rb: updated based on date2 3.9.7.
+
 Sat Nov  4 13:09:31 2006  Shugo Maeda  <shugo@ruby-lang.org>
 
 	* lib/net/imap.rb: accept NOMODSEQ. [ruby-core:9002]

lib/date.rb

@@ -6,7 +6,7 @@
 # Documentation: William Webber <william@williamwebber.com>
 #
 #--
-# $Id: date.rb,v 2.28 2006-10-13 22:04:07+09 tadf Exp $
+# $Id: date.rb,v 2.29 2006-11-05 18:21:29+09 tadf Exp $
 #++
 #
 # == Overview
@@ -1124,7 +1124,13 @@ class Date
   def gregorian() new_start(self.class::GREGORIAN) end
 
   def offset() @of end
-  def new_offset(of=0) self.class.new0(@ajd, of, @sg) end
+
+  def new_offset(of=0)
+    if String === of
+      of = (self.class.zone_to_diff(of) || 0).to_r/86400
+    end
+    self.class.new0(@ajd, of, @sg)
+  end
 
   private :offset, :new_offset
 
@@ -1229,11 +1235,16 @@ class Date
   def next_year(n=1) self >> n * 12 end
   def prev_year(n=1) self << n * 12 end
 
+  require 'enumerator'
+
   # Step the current date forward +step+ days at a
   # time (or backward, if +step+ is negative) until
   # we reach +limit+ (inclusive), yielding the resultant
   # date at each step.
   def step(limit, step=1) # :yield: date
+    unless block_given?
+      return to_enum(:step, limit, step)
+    end
     da = self
     op = %w(- <= >=)[step <=> 0]
     while da.__send__(op, limit)
@@ -1388,6 +1399,9 @@ class DateTime < Date
 	   (fr = valid_time?(h, min, s))
       raise ArgumentError, 'invalid date'
     end
+    if String === of
+      of = (zone_to_diff(of) || 0).to_r/86400
+    end
     new0(jd_to_ajd(jd, fr, of), of, sg)
   end
 
@@ -1410,6 +1424,9 @@ class DateTime < Date
 	   (fr = valid_time?(h, min, s))
       raise ArgumentError, 'invalid date'
     end
+    if String === of
+      of = (zone_to_diff(of) || 0).to_r/86400
+    end
     new0(jd_to_ajd(jd, fr, of), of, sg)
   end
 
@@ -1432,6 +1449,9 @@ class DateTime < Date
 	   (fr = valid_time?(h, min, s))
       raise ArgumentError, 'invalid date'
     end
+    if String === of
+      of = (zone_to_diff(of) || 0).to_r/86400
+    end
     new0(jd_to_ajd(jd, fr, of), of, sg)
   end
 
@@ -1457,6 +1477,9 @@ class DateTime < Date
 	   (fr = valid_time?(h, min, s))
       raise ArgumentError, 'invalid date'
     end
+    if String === of
+      of = (zone_to_diff(of) || 0).to_r/86400
+    end
     new0(jd_to_ajd(jd, fr, of), of, sg)
   end
 
@@ -1549,6 +1572,13 @@ class Date
   # +sg+ specifies the Day of Calendar Reform.
   def self.today(sg=ITALY) Time.now.to_date    .new_start(sg) end
 
+  # Create a new DateTime object representing the current time.
+  #
+  # +sg+ specifies the Day of Calendar Reform.
+  def self.now  (sg=ITALY) Time.now.to_datetime.new_start(sg) end
+
+  private_class_method :now
+
 end
 
 class DateTime < Date
@@ -1565,12 +1595,8 @@ class DateTime < Date
   def to_date() Date.new0(self.class.jd_to_ajd(jd, 0, 0), 0, @sg) end
   def to_datetime() self end
 
-  class << self; undef_method :today end
-
-  # Create a new DateTime object representing the current time.
-  #
-  # +sg+ specifies the Day of Calendar Reform.
-  def self.now(sg=ITALY) Time.now.to_datetime.new_start(sg) end
+  private_class_method :today
+  public_class_method  :now
 
 end