dart:io | Add "followLinks" optional parameter to Directory.list, let it return Link objects when f…

runtime/bin/directory.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef BIN_DIRECTORY_H_
 #define BIN_DIRECTORY_H_
 
 #include "bin/builtin.h"
 #include "bin/dartutils.h"
 #include "bin/native_service.h"
 #include "platform/globals.h"
 #include "platform/thread.h"
 
 class DirectoryListing {
  public:
   virtual ~DirectoryListing() {}
   virtual bool HandleDirectory(char* dir_name) = 0;
   virtual bool HandleFile(char* file_name) = 0;
+  virtual bool HandleLink(char* file_name) = 0;
   virtual bool HandleError(const char* dir_name) = 0;
 };
 
 
 class AsyncDirectoryListing : public DirectoryListing {
  public:
   enum Response {
     kListFile = 0,
     kListDirectory = 1,
-    kListError = 2,
-    kListDone = 3
+    kListLink = 2,
+    kListError = 3,
+    kListDone = 4
   };
 
   explicit AsyncDirectoryListing(Dart_Port response_port)
       : response_port_(response_port) {}
   virtual ~AsyncDirectoryListing() {}
   virtual bool HandleDirectory(char* dir_name);
   virtual bool HandleFile(char* file_name);
+  virtual bool HandleLink(char* file_name);
   virtual bool HandleError(const char* dir_name);
 
  private:
   CObjectArray* NewResponse(Response response, char* arg);
   Dart_Port response_port_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(AsyncDirectoryListing);
 };
 
 
 class SyncDirectoryListing: public DirectoryListing {
  public:
   explicit SyncDirectoryListing(Dart_Handle results)
       : results_(results) {
     add_string_ = DartUtils::NewString("add");
     directory_class_ =
         DartUtils::GetDartClass(DartUtils::kIOLibURL, "Directory");
     file_class_ =
         DartUtils::GetDartClass(DartUtils::kIOLibURL, "File");
+    link_class_ =
+        DartUtils::GetDartClass(DartUtils::kIOLibURL, "Link");
   }
   virtual ~SyncDirectoryListing() {}
   virtual bool HandleDirectory(char* dir_name);
   virtual bool HandleFile(char* file_name);
+  virtual bool HandleLink(char* file_name);
   virtual bool HandleError(const char* dir_name);
 
  private:
   Dart_Handle results_;
   Dart_Handle add_string_;
   Dart_Handle directory_class_;
   Dart_Handle file_class_;
+  Dart_Handle link_class_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(SyncDirectoryListing);
 };
 
 
 class Directory {
  public:
   enum ExistsResult {
     UNKNOWN,
     EXISTS,
     DOES_NOT_EXIST
   };
 
   // This enum must be kept in sync with the request values in
   // directory_impl.dart.
   enum DirectoryRequest {
     kCreateRequest = 0,
     kDeleteRequest = 1,
     kExistsRequest = 2,
     kCreateTempRequest = 3,
     kListRequest = 4,
     kRenameRequest = 5
   };
 
   static bool List(const char* path,
                    bool recursive,
+                   bool follow_links,
                    DirectoryListing* listing);
   static ExistsResult Exists(const char* path);
   static char* Current();
   static bool Create(const char* path);
   static char* CreateTemp(const char* const_template);
   static bool Delete(const char* path, bool recursive);
   static bool Rename(const char* path, const char* new_path);
   static Dart_Port GetServicePort();
 
  private:
   static NativeService directory_service_;
 
   DISALLOW_ALLOCATION();
   DISALLOW_IMPLICIT_CONSTRUCTORS(Directory);
 };
 
 
 #endif  // BIN_DIRECTORY_H_