* lib/time.rb (Time#xmlschema): use strftime specifiers instead of

  fractional exponential calcuation which yields undesirable
  result.  [ruby-core:42997][Bug #6100]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34845 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 13 deletions

diff --git a/lib/time.rb b/lib/time.rb
index c8aa3b12b2..977010087e 100644
--- a/lib/time.rb
+++ b/lib/time.rb
@@ -620,20 +620,12 @@ class Time
   # You must require 'time' to use this method.
   #
   def xmlschema(fraction_digits=0)
-    sprintf('%0*d-%02d-%02dT%02d:%02d:%02d',
-      year < 0 ? 5 : 4, year, mon, day, hour, min, sec) +
-    if fraction_digits <= 0
-      ''
-    else
-      '.' + sprintf('%0*d', fraction_digits, (subsec * 10**fraction_digits).floor)
-    end +
-    if utc?
-      'Z'
-    else
-      off = utc_offset
-      sign = off < 0 ? '-' : '+'
-      sprintf('%s%02d:%02d', sign, *(off.abs / 60).divmod(60))
+    fraction_digits = fraction_digits.to_i
+    s = strftime("%FT%T")
+    if fraction_digits > 0
+      s << strftime(".%#{fraction_digits}N")
     end
+    s << (utc? ? 'Z' : strftime("%:z"))
   end
   alias iso8601 xmlschema
 end