added a bunch of good stuff to the commit object

3 files changed, 106 insertions, 1 deletions

diff --git a/lib/git/author.rb b/lib/git/author.rb
new file mode 100644
index 0000000..545abb9
--- /dev/null
+++ b/lib/git/author.rb
@@ -0,0 +1,14 @@
+module Git
+  class Author
+    attr_accessor :name, :email, :date
+    
+    def initialize(author_string)
+      if m = /(.*?) <(.*?)> (\d+) (.*)/.match(author_string)
+        @name = m[1]
+        @email = m[2]
+        @date = Time.at(m[3].to_i)
+      end
+    end
+    
+  end
+end
\ No newline at end of file
diff --git a/lib/git/lib.rb b/lib/git/lib.rb
index 575f0d7..13a3b4c 100644
--- a/lib/git/lib.rb
+++ b/lib/git/lib.rb
@@ -79,6 +79,32 @@ module Git
       command('cat-file', ['-s', sha]).to_i
     end
     
+    # returns useful array of raw commit object data
+    def commit_data(sha)
+      in_message = false
+      
+      hsh = {'message' => '', 'parent' => []}
+      command_lines('cat-file', ['commit', sha.to_s]).each do |line|
+        if in_message
+          hsh['message'] += line + "\n"
+        end
+        
+        if (line != '') && !in_message
+          data = line.split
+          key = data.shift
+          value = data.join(' ')
+          if key == 'parent'
+            hsh[key] << value
+          else
+            hsh[key] = value
+          end
+        else
+          in_message = true
+        end
+      end
+      hsh
+    end
+    
     def object_contents(sha)
       command('cat-file', ['-p', sha])
     end
diff --git a/lib/git/object.rb b/lib/git/object.rb
index a7d7c17..58ea7ab 100644
--- a/lib/git/object.rb
+++ b/lib/git/object.rb
@@ -12,7 +12,7 @@ module Git
     
       def initialize(base, sha)
         @base = base
-        @sha = sha
+        @sha = sha.to_s
         @size = @base.lib.object_size(@sha)
         setup
       end
@@ -63,9 +63,74 @@ module Git
     end
   
     class Commit < AbstractObject
+      
+      @tree = nil
+      @parents = nil
+      @author = nil
+      @committer = nil
+      @message = nil
+      
       def setup
         @type = 'commit'
       end
+      
+      def message
+        check_commit
+        @message
+      end
+      
+      def gtree
+        check_commit
+        Tree.new(@base, @tree)
+      end
+      
+      def parent
+        parents.first
+      end
+      
+      # array of all parent commits
+      def parents
+        check_commit
+        @parents        
+      end
+      
+      # git author
+      def author     
+        check_commit
+        @author
+      end
+      
+      def author_date
+        author.date
+      end
+      
+      # git author
+      def committer
+        check_commit
+        @committer
+      end
+      
+      def committer_date 
+        committer.date
+      end
+      alias_method :date, :committer_date
+
+      def diff_parent
+        diff(parent)
+      end
+      
+      private
+      
+        # see if this object has been initialized and do so if not
+        def check_commit
+          data = @base.lib.commit_data(@sha)
+          @committer = Git::Author.new(data['committer'])
+          @author = Git::Author.new(data['author'])
+          @tree = Tree.new(@base, data['tree'])
+          @parents = data['parent'].map{ |sha| Commit.new(@base, sha) }
+          @message = data['message'].chomp
+        end
+      
     end
   
     class Tag < AbstractObject