diff --git a/lib/linguist/repository.rb b/lib/linguist/repository.rb
new file mode 100644
index 00000000..b8a9c37f
--- /dev/null
+++ b/lib/linguist/repository.rb
@@ -0,0 +1,88 @@
+module Linguist
+  class Repository
+    IgnorePaths = %w(
+      yui
+      tiny_mce
+      ckeditor
+      redbox
+      active_scaffold
+      rico_corner
+      code_highlighter
+      vendor
+      bundle
+      node_modules
+      cache
+      assets
+      bookends
+      dojo
+      extjs
+      sencha
+      mochikit
+      prototype(.*)\.js
+      mootools\.js
+      jquery([^.]*)(\.min)?\.js
+      jquery\-\d\.\d\.\d(\.min)?\.js
+      effects\.js
+      controls\.js
+      dragdrop\.js
+      fabfile\.py
+      less([^.]*)(\.min)?\.js
+      less\-\d+\.\d+\.\d+(\.min)?\.js
+    )
+
+    IgnoreRegexp = Regexp.new(IgnorePaths.join('|'))
+
+    def initialize(paths)
+      @paths = paths
+
+      @stats     = nil
+      @languages = Hash.new { 0 }
+      @sizes     = Hash.new { 0 }
+    end
+
+    def [](path)
+      @paths[path]
+    end
+
+    def language
+      stats[:primary]
+    end
+
+    def stats
+      @stats ||= compute_stats
+    end
+
+    def compute_stats
+      @paths.each do |path, blob|
+        next if path =~ IgnoreRegexp
+
+        language = blob.language
+
+        if language.popular?
+          @languages[language.name] += 1
+          @sizes[language.name]     += blob.size
+        end
+      end
+
+      total_size = @sizes.inject(0) { |s,(k,v)| s + v }
+
+      results = {
+        :total_size => total_size
+      }
+
+      @sizes.each do |language, size|
+        results[language] = size
+      end
+
+      primary = @sizes.max_by { |(language, size)|
+        size
+      }
+
+      if primary
+        results[:primary] = primary[0]
+      end
+
+      results
+    end
+  end
+end