Initial revisionv1_0_r2

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 42 insertions, 0 deletions

diff --git a/lib/parsedate.rb b/lib/parsedate.rb
new file mode 100644
index 0000000000..1c1dda76bc
--- /dev/null
+++ b/lib/parsedate.rb
@@ -0,0 +1,42 @@
+module ParseDate
+  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 }
+  MONTHPAT = MONTHS.keys.join('|')
+  DAYPAT = 'mon|tue|wed|thu|fri|sat|sun'
+  
+  def parsedate(date) 
+    if date.sub!(/(#{DAYPAT})/i, ' ')
+      dayofweek = $1
+    end
+    if date.sub!(/\s+(\d+:\d+(:\d+)?)/, ' ')
+      time = $1
+    end
+    if date =~ /19(\d\d)/
+      year = Integer($1)
+    end
+    if date.sub!(/\s*(\d+)\s+(#{MONTHPAT})\S*\s+/i, ' ')
+      dayofmonth = $1.to_i
+      monthname  = $2
+    elsif date.sub!(/\s*(#{MONTHPAT})\S*\s+(\d+)\s+/i, ' ')
+      monthname  = $1
+      dayofmonth = $2.to_i
+    elsif date.sub!(/\s*(#{MONTHPAT})\S*\s+(\d+)\D+/i, ' ')
+      monthname  = $1
+      dayofmonth = $2.to_i
+    elsif date.sub!(/\s*(\d\d?)\/(\d\d?)/, ' ')
+      month  = $1
+      dayofmonth = $2.to_i
+    end
+    if monthname
+      month = MONTHS[monthname.downcase]
+    end
+    if ! year && date =~ /\d\d/
+      year = Integer($&)
+    end
+    return year, month, dayofmonth
+  end
+
+  module_function :parsedate
+end