1 /* 2 * Copyright (C) 2015, The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include <android-base/macros.h> 20 21 #include <memory> 22 #include <string> 23 #include <vector> 24 25 #include "code_writer.h" 26 #include "line_reader.h" 27 28 namespace android { 29 namespace aidl { 30 31 class IoDelegate { 32 public: 33 IoDelegate() = default; 34 virtual ~IoDelegate() = default; 35 36 // Stores an absolute version of |path| to |*absolute_path|, 37 // possibly prefixing it with the current working directory. 38 // Returns false and does not set |*absolute_path| on error. 39 static bool GetAbsolutePath(const std::string& path, 40 std::string* absolute_path); 41 42 // Returns a unique_ptr to the contents of |filename|. 43 // Will append the optional |content_suffix| to the returned contents. 44 virtual std::unique_ptr<std::string> GetFileContents( 45 const std::string& filename, 46 const std::string& content_suffix = "") const; 47 48 virtual std::unique_ptr<LineReader> GetLineReader( 49 const std::string& file_path) const; 50 51 virtual bool FileIsReadable(const std::string& path) const; 52 53 virtual std::unique_ptr<CodeWriter> GetCodeWriter( 54 const std::string& file_path) const; 55 56 virtual void RemovePath(const std::string& file_path) const; 57 58 virtual std::vector<std::string> ListFiles(const std::string& dir) const; 59 60 private: 61 // Create the directory when path is a dir or the parent directory when 62 // path is a file. Path is a dir if it ends with the path separator. 63 bool CreateDirForPath(const std::string& path) const; 64 65 DISALLOW_COPY_AND_ASSIGN(IoDelegate); 66 }; // class IoDelegate 67 68 } // namespace aidl 69 } // namespace android 70