display images from the file yard

app/controllers/file_controller.rb

@@ -7,11 +7,8 @@ class FileController < ApplicationController
   layout 'default'
 
   def file
-    raise Instiki::ValidationError.new("Invalid path: no file name") unless @file_name
-    raise Instiki::ValidationError.new("Invalid path: no web name") unless @web_name
-    raise Instiki::ValidationError.new("Invalid path: unknown web name") unless @web
+    check_path
 
-    file_yard = @wiki.file_yard(@web)
     if @params['file']
       # form supplied
       file_yard.upload(@file_name, @params['file'])
@@ -29,4 +26,25 @@ class FileController < ApplicationController
     return_to_last_remembered
   end
   
+  def pic
+    check_path
+    if file_yard.has_file?(@file_name)
+      send_file(file_yard.file_path(@file_name))
+    else
+      render_text "Image not found: #{@file_name}", '404 Not Found'
+    end
+  end
+
+  private 
+  
+  def check_path
+    raise Instiki::ValidationError.new("Invalid path: no file name") unless @file_name
+    raise Instiki::ValidationError.new("Invalid path: no web name") unless @web_name
+    raise Instiki::ValidationError.new("Invalid path: unknown web name") unless @web
+  end
+  
+  def file_yard
+    @wiki.file_yard(@web)
+  end
+  
 end

test/functional/file_controller_test.rb

@@ -29,7 +29,7 @@ class FileControllerTest < Test::Unit::TestCase
   end
 
   def test_file_download_text_file
-    File.open(FILE_AREA + '/foo.txt', 'wb') { |f| f.write "aaa\nbbb\n" }
+    File.open("#{FILE_AREA}/foo.txt", 'wb') { |f| f.write "aaa\nbbb\n" }
   
     r = process 'file', 'web' => 'wiki1', 'id' => 'foo.txt'
     
@@ -39,7 +39,7 @@ class FileControllerTest < Test::Unit::TestCase
   end
 
   def test_file_download_pdf_file
-    File.open(FILE_AREA + '/foo.pdf', 'wb') { |f| f.write "aaa\nbbb\n" }
+    File.open("#{FILE_AREA}/foo.pdf", 'wb') { |f| f.write "aaa\nbbb\n" }
   
     r = process 'file', 'web' => 'wiki1', 'id' => 'foo.pdf'
     
@@ -48,4 +48,13 @@ class FileControllerTest < Test::Unit::TestCase
     assert_equal 'application/pdf', r.headers['Content-Type']
   end
 
+  def test_pic_download_gif
+    FileUtils.cp("#{RAILS_ROOT}/test/fixtures/rails.gif", FILE_AREA)
+    
+    r = process 'pic', 'web' => 'wiki1', 'id' => 'rails.gif'
+    
+    assert_success
+    assert_equal File.size("#{FILE_AREA}/rails.gif"), r.binary_content.size
+  end
+
 end