Add basic support for symbolic links.

lib/gollum.rb

@@ -6,6 +6,7 @@ require 'ostruct'
 
 # external
 require 'grit'
+require File.expand_path('../gollum/grit_ext', __FILE__)
 require 'github/markup'
 require 'sanitize'
 

lib/gollum/blob_entry.rb

@@ -10,10 +10,14 @@ module Gollum
     # Gets the Fixnum size of this blob.
     attr_reader :size
 
-    def initialize(sha, path, size = nil)
+    # Gets the Fixnum mode of this blob.
+    attr_reader :mode
+
+    def initialize(sha, path, size = nil, mode = nil)
       @sha  = sha
       @path = path
       @size = size
+      @mode = mode
       @dir  = @name = @blob = nil
     end
 
@@ -34,7 +38,7 @@ module Gollum
     # Returns an unbaked Grit::Blob instance.
     def blob(repo)
       @blob ||= Grit::Blob.create(repo,
-        :id => @sha, :name => name, :size => @size)
+        :id => @sha, :name => name, :size => @size, :mode => @mode)
     end
 
     # Gets a Page instance for this blob.

lib/gollum/file.rb

@@ -42,7 +42,14 @@ module Gollum
     #
     # Returns the String data.
     def raw_data
-      @blob && @blob.data
+      return nil unless @blob
+
+      if @blob.is_symlink
+        new_path = @blob.symlink_target(self.path)
+        return IO.read(new_path) if new_path
+      end
+
+      @blob.data
     end
 
     # Public: The Grit::Commit version of the file.

lib/gollum/git_access.rb

@@ -229,7 +229,7 @@ module Gollum
     # Returns an Array of BlobEntry instances.
     def parse_tree_line(line)
       mode, type, sha, size, *name = line.split(/\s+/)
-      BlobEntry.new(sha, name.join(' '), size.to_i)
+      BlobEntry.new(sha, name.join(' '), size.to_i, mode.to_i(8))
     end
 
     # Decode octal sequences (\NNN) in tree path names.

lib/gollum/grit_ext.rb

@@ -0,0 +1,20 @@
+# ~*~ encoding: utf-8 ~*~
+
+module Grit
+  class Blob
+    def is_symlink
+      self.mode == 0120000
+    end
+
+    def symlink_target(base_path = nil)
+      target = self.data
+      new_path = File.expand_path(File.join('..', target), base_path)
+
+      if File.file? new_path
+        return new_path
+      end
+    end
+
+    nil
+  end
+end

lib/gollum/page.rb

@@ -180,7 +180,14 @@ module Gollum
     #
     # Returns the String data.
     def raw_data
-      @blob && @blob.data
+      return nil unless @blob
+
+      if @blob.is_symlink
+        new_path = @blob.symlink_target(::File.join(@wiki.repo.path, self.path))
+        return IO.read(new_path) if new_path
+      end
+
+      @blob.data
     end
 
     # Public: A text data encoded in specified encoding.

lib/gollum/wiki.rb

@@ -276,7 +276,7 @@ module Gollum
       page = @page_class.new(self)
       ext  = @page_class.format_to_ext(format.to_sym)
       name = @page_class.cname(name) + '.' + ext
-      blob = OpenStruct.new(:name => name, :data => data)
+      blob = OpenStruct.new(:name => name, :data => data, :is_symlink => false)
       page.populate(blob)
       page.version = @access.commit('master')
       page