1 files changed, 39 insertions, 0 deletions
diff --git a/lib/overwrite.rb b/lib/overwrite.rb
new file mode 100644
index 0000000..e883d45
--- /dev/null
+++ b/lib/overwrite.rb
@@ -0,0 +1,39 @@
+class String
+  def underscore
+    self.gsub(/::/, '/').
+    gsub(/([A-Z]+)([A-Z][a-z])/,'\1_\2').
+    gsub(/([a-z\d])([A-Z])/,'\1_\2').
+    tr("-", "_").
+    downcase
+  end
+end
+
+module URI
+
+  def self.task? uri
+    uri =~ /task/ and URI.valid? uri
+  end
+  
+  def self.dataset? uri, subjectid=nil
+    uri =~ /dataset/ and URI.accessible? uri, subjectid=nil
+  end
+ 
+  def self.model? uri, subjectid=nil
+    uri =~ /model/ and URI.accessible? uri, subjectid=nil
+  end
+
+  def self.accessible? uri, subjectid=nil
+    Net::HTTP.get_response(URI.parse(uri))
+    true
+  rescue
+    false
+  end
+
+  def self.valid? uri
+    u = URI::parse(uri)
+    u.scheme!=nil and u.host!=nil
+  rescue URI::InvalidURIError
+    false
+  end
+end
+