Handle invalid byte sequences

.gitignore

@@ -2,3 +2,4 @@ Gemfile.lock
 pkg
 .bundle
 xcuserdata
+!._*

lib/fui/finder.rb

@@ -50,6 +50,10 @@ def unused_references(&block)
 
     private
 
+    def fix_encoding(file_contents)
+      file_contents.encode!('UTF-8', 'binary', invalid: :replace, undef: :replace, replace: '')
+    end
+
     # Find all files for which the block yields.
     def find(path)
       results = []
@@ -89,6 +93,10 @@ def process_code(references, path)
         headers.each do |header|
           filename_without_extension = File.basename(path, File.extname(path))
           file_contents = File.read(file)
+          unless file_contents.valid_encoding?
+            puts "Invalid encoding for #{filename_without_extension}" if options[:verbose]
+            file_contents = fix_encoding(file_contents)
+          end
           global_import_exists = global_imported(file_contents, header)
           local_import_exists = local_imported(file_contents, header)
           references[header] << path if filename_without_extension != header.filename_without_extension && (local_import_exists || global_import_exists)

lib/fui/project.rb

@@ -22,7 +22,7 @@ def bridging_headers(verbose)
 
           path_tokens = tokens[1].split('/')
           bridging_header = path_tokens[path_tokens.length - 1]
-          puts "Bridging Header Found: #{bridging_header} in #{project_path}." if verbose
+          puts "Bridging Header Found: #{bridging_header} in #{path}." if verbose
           bridging_headers << bridging_header
         end
         bridging_headers.uniq

spec/fixtures/m/unused_class.h

@@ -3,6 +3,6 @@
 //  FUI
 //
 
-@interface UnusedClass
+@interface UnusedClass\xAD
 
 @end