factor out deps. formatting code.

lib/mongoid-grid_fs.rb

@@ -1,16 +1,61 @@
-require "mongoid"
-require "mime/types"
-require "digest/md5"
-require "cgi"
-
-class GridFS
 ##
 #
+  class GridFS
+    const_set :Version, '1.1.0'
+
     class << GridFS
       def version
-      "1.0.0"
+        const_get :Version
       end
 
+      def dependencies
+        {
+          'mongoid'         => [ 'mongoid'         , ' >= 3.0.1' ] ,
+          'mime/types'      => [ 'mime-types'      , ' >= 1.19'  ] ,
+        }
+      end
+
+      def libdir(*args, &block)
+        @libdir ||= File.expand_path(__FILE__).sub(/\.rb$/,'')
+        args.empty? ? @libdir : File.join(@libdir, *args)
+      ensure
+        if block
+          begin
+            $LOAD_PATH.unshift(@libdir)
+            block.call()
+          ensure
+            $LOAD_PATH.shift()
+          end
+        end
+      end
+
+      def load(*libs)
+        libs = libs.join(' ').scan(/[^\s+]+/)
+        libdir{ libs.each{|lib| Kernel.load(lib) } }
+      end
+    end
+
+    begin
+      require 'rubygems'
+    rescue LoadError
+      nil
+    end
+
+    if defined?(gem)
+      dependencies.each do |lib, dependency|
+        gem(*dependency)
+        require(lib)
+      end
+    end
+
+    require "digest/md5"
+    require "cgi"
+  end
+
+##
+#
+  class GridFS
+    class << GridFS
       attr_accessor :namespace
       attr_accessor :file_model
       attr_accessor :chunk_model
@@ -44,8 +89,8 @@ class GridFS
       end
     end
 
-##
+  ##
-#
+  #
     def GridFS.namespace_for(prefix)
       prefix = prefix.to_s.downcase
       const = "::GridFS::#{ prefix.to_s.camelize }"
@@ -53,8 +98,8 @@ class GridFS
       const_defined?(namespace) ? const_get(namespace) : build_namespace_for(namespace)
     end
 
-##
+  ##
-#
+  #
     def GridFS.build_namespace_for(prefix)
       prefix = prefix.to_s.downcase
       const = prefix.camelize
@@ -216,8 +261,8 @@ class GridFS
       end
     end
 
-##
+  ##
-#
+  #
     def GridFS.build_file_model_for(namespace)
       prefix = namespace.name.split(/::/).last.downcase
       file_model_name = "#{ namespace.name }::File"
@@ -319,8 +364,8 @@ class GridFS
       end
     end
 
-##
+  ##
-#
+  #
     def GridFS.build_chunk_model_for(namespace)
       prefix = namespace.name.split(/::/).last.downcase
       file_model_name = "#{ namespace.name }::File"
@@ -358,8 +403,8 @@ class GridFS
       end
     end
 
-##
+  ##
-#
+  #
     def GridFS.reading(arg, &block)
       if arg.respond_to?(:read)
         rewind(arg) do |io|
@@ -412,8 +457,10 @@ class GridFS
       basename = ::File.basename(pathname.to_s)
       CGI.unescape(basename).gsub(%r/[^0-9a-zA-Z_@)(~.-]/, '_').gsub(%r/_+/,'_')
     end
-end
+  end
 
-GridFs = GridFS
+##
+#
+  GridFs = GridFS
 
-GridFS.init!
+  GridFS.init!

mongoid-grid_fs.gemspec

@@ -3,7 +3,7 @@
 
 Gem::Specification::new do |spec|
   spec.name = "mongoid-grid_fs"
-  spec.version = "1.0.0"
+  spec.version = "1.1.0"
   spec.platform = Gem::Platform::RUBY
   spec.summary = "mongoid-grid_fs"
   spec.description = "a mongoid 3/moped compatible implementation of the grid_fs specification"
@@ -26,6 +26,10 @@ Gem::Specification::new do |spec|
   spec.test_files = nil
 
   
+    spec.add_dependency(*["mongoid", " >= 3.0.1"])
+  
+    spec.add_dependency(*["mime-types", " >= 1.19"])
+  
 
   spec.extensions.push(*[])
 

test/mongoid-grid_fs_test.rb

@@ -142,6 +142,8 @@ Testing GridFs do
 
 protected
   def object_id_re
-    %r| \w{#{ BSON::ObjectId.new.to_s.size }} |iomx
+    object_id = defined?(Moped) ? Moped::BSON::ObjectId.new : BSON::ObjectId.new
+
+    %r| \w{#{ object_id.to_s.size }} |iomx
   end
 end