add basic GitAccess class

lib/gollum.rb

@@ -11,6 +11,7 @@ require 'sanitize'
 require 'gollum/ruby1.8'
 
 # internal
+require 'gollum/git_access'
 require 'gollum/pagination'
 require 'gollum/blob_entry'
 require 'gollum/wiki'

lib/gollum/git_access.rb

@@ -0,0 +1,19 @@
+module Gollum
+  class GitAccess
+    attr_reader :path
+    attr_reader :repo
+    attr_reader :ref_map
+    attr_reader :tree_map
+
+    def initialize(path)
+      @path     = path
+      @repo     = Grit::Repo.new(path)
+      @ref_map  = {}
+      @tree_map = {}
+    end
+
+    def exist?
+      @repo.git.exist?
+    end
+  end
+end

lib/gollum/wiki.rb

@@ -59,7 +59,8 @@ module Gollum
     # Returns a fresh Gollum::Repo.
     def initialize(path, options = {})
       @path       = path
-      @repo       = Grit::Repo.new(path)
+      @access     = options[:access] || GitAccess.new(path)
+      @repo       = @access.repo
       @base_path  = options[:base_path]  || "/"
       @page_class = options[:page_class] || self.class.page_class
       @file_class = options[:file_class] || self.class.file_class
@@ -70,7 +71,7 @@ module Gollum
     #
     # Returns true if the repo exists, and false if it does not.
     def exist?
-      @repo.git.exist?
+      @access.exist?
     end
 
     # Public: Get the formatted page for a given page name.
@@ -520,7 +521,7 @@ module Gollum
       data, name = line.split("\t")
       mode, type, sha = data.split(' ')
       name = decode_git_path(name)
-      BlobEntry.new sha, name
+      BlobEntry.new(sha, name)
     end
 
     # Decode octal sequences (\NNN) in tree path names.