scm: replace invalid utf-8 sequences instead of stripping in displaying repository contents on Ruby 1.8.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@5427 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/helpers/repositories_helper.rb

@@ -156,12 +156,18 @@ module RepositoriesHelper
               :undef => :replace, :replace => '?').encode("UTF-8")
       end
     else
-      # removes invalid UTF8 sequences
+      ic = Iconv.new('UTF-8', 'UTF-8')
+      txtar = ""
       begin
-        str = Iconv.conv('UTF-8//IGNORE', 'UTF-8', str + '  ')[0..-3]
-      rescue Iconv::InvalidEncoding
-        # "UTF-8//IGNORE" is not supported on some OS
+        txtar += ic.iconv(str)
+      rescue Iconv::IllegalSequence
+        txtar += $!.success
+        str = '?' + $!.failed[1,$!.failed.length]
+        retry
+      rescue
+        txtar += $!.success
       end
+      str = txtar
     end
     str
   end