Issue 5183 - Provide async interface for FileSystem

test/FileSystemJsObject.cpp

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2017 eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 32 matching lines @@
 
     std::shared_ptr<std::istream> Read(const std::string& path) const
     {
       if (!success)
         throw std::runtime_error("Unable to read " + path);
       std::stringstream* const stream = new std::stringstream;
       *stream << contentToRead;
       return std::shared_ptr<std::istream>(stream);
     }
 
+    void Read(const std::string& path,
+              const ReadCallback& callback) const
+    {
+      try
+      {
+        auto result = Read(path);
+        callback(result);
+      }
+      catch (...)
+      {
+      }
+    }
+
     void Write(const std::string& path, std::istream& data)
     {
       if (!success)
         throw std::runtime_error("Unable to write to " + path);
       lastWrittenPath = path;
 
       std::stringstream content;
       content << data.rdbuf();
       lastWrittenContent = content.str();
     }
 
+    void Write(const std::string& path,
+               std::istream& data,
+               const Callback& callback)
+    {
+      try
+      {
+        Write(path, data);
+        callback();
+      }
+      catch (...)
+      {
+      }
+    }
+
     void Move(const std::string& fromPath, const std::string& toPath)
     {
       if (!success)
         throw std::runtime_error("Unable to move " + fromPath + " to "
                                  + toPath);
       movedFrom = fromPath;
       movedTo = toPath;
     }
 
+    void Move(const std::string& fromPath,
+              const std::string& toPath,
+              const Callback& callback)
+    {
+      try
+      {
+        Move(fromPath, toPath);
+        callback();
+      }
+      catch (...)
+      {
+      }
+    }
+
     void Remove(const std::string& path)
     {
       if (!success)
         throw std::runtime_error("Unable to remove " + path);
       removedPath = path;
     }
 
+    void Remove(const std::string& path, const Callback& callback)
+    {
+      try
+      {
+        Remove(path);
+        callback();
+      }
+      catch (...)
+      {
+      }
+    }
+
     StatResult Stat(const std::string& path) const
     {
       if (!success)
         throw std::runtime_error("Unable to stat " + path);
       statPath = path;
       StatResult result;
       result.exists = statExists;
       result.isDirectory = statIsDirectory;
       result.isFile = statIsFile;
       result.lastModified = statLastModified;
       return result;
     }
 
+    void Stat(const std::string& path,
+              const StatCallback& callback) const
+    {
+      try
+      {
+        auto result = Stat(path);
+        callback(result);
+      }
+      catch (...)
+      {
+      }
+    }
+
     std::string Resolve(const std::string& path) const
     {
       if (!success)
         throw std::runtime_error("Unable to stat " + path);
       return path;
     }
+
+    void Resolve(const std::string& path,
+                 const ResolveCallback& callback) const
+    {
+      try
+      {
+        auto result = Resolve(path);
+        callback(result);
+      }
+      catch (...)
+      {
+      }
+    }
   };
 
   void ReadFile(AdblockPlus::JsEnginePtr jsEngine, std::string& content,
                 std::string& error)
   {
     jsEngine->Evaluate("_fileSystem.read('', function(r) {result = r})");
     AdblockPlus::Sleep(50);
     content = jsEngine->Evaluate("result.content").AsString();
     error = jsEngine->Evaluate("result.error").AsString();
   }
@@ skipping 130 matching lines @@
   ASSERT_ANY_THROW(jsEngine->Evaluate("_fileSystem.stat('', '')"));
 }
 
 TEST_F(FileSystemJsObjectTest, StatError)
 {
   mockFileSystem->success = false;
   jsEngine->Evaluate("_fileSystem.stat('foo', function(r) {result = r})");
   AdblockPlus::Sleep(50);
   ASSERT_NE("", jsEngine->Evaluate("result.error").AsString());
 }