text: /*
   * Copyright 2015 WebAssembly Community Group participants
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  //
  // FIle helpers.
  //
  
  #ifndef wasm_support_file_h
  #define wasm_support_file_h
  
  #include <fstream>
  #include <string>
  #include <utility>
  #include <vector>
  
  namespace wasm {
  
  namespace Flags {
    enum BinaryOption {
      Binary,
      Text
    };
    enum DebugOption {
      Debug,
      Release
    };
  }
  
  template <typename T>
  T read_file(const std::string &filename, Flags::BinaryOption binary, Flags::DebugOption debug);
  // Declare the valid explicit specializations.
  extern template std::string read_file<>(const std::string &, Flags::BinaryOption, Flags::DebugOption);
  extern template std::vector<char> read_file<>(const std::string &, Flags::BinaryOption, Flags::DebugOption);
  
  class Output {
   public:
    // An empty filename will open stdout instead.
    Output(const std::string &filename, Flags::BinaryOption binary, Flags::DebugOption debug);
    ~Output() = default;
    template <typename T>
    std::ostream &operator<<(const T &v) {
      return out << v;
    }
  
    std::ostream& getStream() {
      return out;
    }
  
   private:
    Output() = delete;
    Output(const Output &) = delete;
    Output &operator=(const Output &) = delete;
    std::ofstream outfile;
    std::ostream out;
  };
  }
  
  #endif  // wasm_support_file_h
  