r3240@asus: jeremy | 2005-11-20 23:22:34 -0800

 Introduce enable_warnings counterpart to silence_warnings.


git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@3134 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 25 insertions, 16 deletions

diff --git a/activesupport/lib/active_support/core_ext/kernel.rb b/activesupport/lib/active_support/core_ext/kernel.rb
index b687af03f6..d722c306cd 100644
--- a/activesupport/lib/active_support/core_ext/kernel.rb
+++ b/activesupport/lib/active_support/core_ext/kernel.rb
@@ -29,6 +29,14 @@ class Object
     $VERBOSE = old_verbose
   end
 
+  # Sets $VERBOSE to true for the duration of the block and back to its original value afterwards.
+  def enable_warnings
+    old_verbose, $VERBOSE = $VERBOSE, true
+    yield
+  ensure
+    $VERBOSE = old_verbose
+  end
+
   # Silences stderr for the duration of the block.
   #
   #   silence_stderr do
@@ -54,26 +62,27 @@ class Object
   rescue Errno::ENOENT => e
     STDERR.puts "#$0: #{e}"
   end
-  
-  # Method that requires a library, ensuring that rubygems is loaded
+
+  # Require a library with fallback to RubyGems.  Warnings during library
+  # loading are silenced to increase signal/noise for application warnings.
   def require_library_or_gem(library_name)
-    begin
-      require library_name
-    rescue LoadError => cannot_require
-      # 1. Requiring the module is unsuccessful, maybe it's a gem and nobody required rubygems yet. Try.
-      begin
-        require 'rubygems'
-      rescue LoadError => rubygems_not_installed
-        raise cannot_require
-      end
-      # 2. Rubygems is installed and loaded. Try to load the library again
+    silence_warnings do
       begin
         require library_name
-      rescue LoadError => gem_not_installed
-        raise cannot_require
+      rescue LoadError => cannot_require
+        # 1. Requiring the module is unsuccessful, maybe it's a gem and nobody required rubygems yet. Try.
+        begin
+          require 'rubygems'
+        rescue LoadError => rubygems_not_installed
+          raise cannot_require
+        end
+        # 2. Rubygems is installed and loaded. Try to load the library again
+        begin
+          require library_name
+        rescue LoadError => gem_not_installed
+          raise cannot_require
+        end
       end
     end
   end
-
-
 end