From 079ff69ca0bb5fc71e2de009829ad7410f374c26 Mon Sep 17 00:00:00 2001
From: tenderlove <tenderlove@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 26 Nov 2013 21:41:48 +0000
Subject: * ext/psych/lib/psych/scalar_scanner.rb: fix support for negative  
 years. * ext/psych/lib/psych/visitors/yaml_tree.rb: ditto *
 test/psych/test_date_time.rb: test for change.   Fixes:
 https://github.com/tenderlove/psych/issues/168

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43864 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/psych/lib/psych/scalar_scanner.rb     | 4 ++--
 ext/psych/lib/psych/visitors/yaml_tree.rb | 6 +++++-
 2 files changed, 7 insertions(+), 3 deletions(-)

(limited to 'ext/psych/lib/psych')

diff --git a/ext/psych/lib/psych/scalar_scanner.rb b/ext/psych/lib/psych/scalar_scanner.rb
index 5a805981b1..3fc9edd25d 100644
--- a/ext/psych/lib/psych/scalar_scanner.rb
+++ b/ext/psych/lib/psych/scalar_scanner.rb
@@ -5,7 +5,7 @@ module Psych
   # Scan scalars for built in types
   class ScalarScanner
     # Taken from http://yaml.org/type/timestamp.html
-    TIME = /^\d{4}-\d{1,2}-\d{1,2}(?:[Tt]|\s+)\d{1,2}:\d\d:\d\d(?:\.\d*)?(?:\s*(?:Z|[-+]\d{1,2}:?(?:\d\d)?))?$/
+    TIME = /^-?\d{4}-\d{1,2}-\d{1,2}(?:[Tt]|\s+)\d{1,2}:\d\d:\d\d(?:\.\d*)?(?:\s*(?:Z|[-+]\d{1,2}:?(?:\d\d)?))?$/
 
     # Taken from http://yaml.org/type/float.html
     FLOAT = /^(?:[-+]?([0-9][0-9_,]*)?\.[0-9]*([eE][-+][0-9]+)?(?# base 10)
@@ -123,7 +123,7 @@ module Psych
       klass = class_loader.load 'Time'
 
       date, time = *(string.split(/[ tT]/, 2))
-      (yy, m, dd) = date.split('-').map { |x| x.to_i }
+      (yy, m, dd) = date.match(/^(-?\d{4})-(\d{1,2})-(\d{1,2})/).captures.map { |x| x.to_i }
       md = time.match(/(\d+:\d+:\d+)(?:\.(\d*))?\s*(Z|[-+]\d+(:\d\d)?)?/)
 
       (hh, mm, ss) = md[1].split(':').map { |x| x.to_i }
diff --git a/ext/psych/lib/psych/visitors/yaml_tree.rb b/ext/psych/lib/psych/visitors/yaml_tree.rb
index b469e2ddc3..1cb2137693 100644
--- a/ext/psych/lib/psych/visitors/yaml_tree.rb
+++ b/ext/psych/lib/psych/visitors/yaml_tree.rb
@@ -209,7 +209,11 @@ module Psych
       end
 
       def visit_DateTime o
-        formatted = format_time o.to_time
+        formatted = if o.offset.zero?
+                      o.strftime("%Y-%m-%d %H:%M:%S.%9N Z".freeze)
+                    else
+                      o.strftime("%Y-%m-%d %H:%M:%S.%9N %:z".freeze)
+                    end
         tag = '!ruby/object:DateTime'
         register o, @emitter.scalar(formatted, nil, tag, false, false, Nodes::Scalar::ANY)
       end
-- 
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