| /* |
| * Copyright (C) 2015, The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| #include "code_writer.h" |
| |
| #include <iostream> |
| #include <stdarg.h> |
| |
| #include <android-base/stringprintf.h> |
| |
| using std::cerr; |
| using std::endl; |
| |
| namespace android { |
| namespace aidl { |
| |
| namespace { |
| |
| class StringCodeWriter : public CodeWriter { |
| public: |
| StringCodeWriter(std::string* output_buffer) : output_(output_buffer) {} |
| virtual ~StringCodeWriter() = default; |
| |
| bool Write(const char* format, ...) override { |
| va_list ap; |
| va_start(ap, format); |
| android::base::StringAppendV(output_, format, ap); |
| va_end(ap); |
| return true; |
| } |
| |
| bool Close() override { return true; } |
| |
| private: |
| std::string* output_; |
| }; // class StringCodeWriter |
| |
| class FileCodeWriter : public CodeWriter { |
| public: |
| FileCodeWriter(FILE* output_file, bool close_on_destruction) |
| : output_(output_file), |
| close_on_destruction_(close_on_destruction) {} |
| virtual ~FileCodeWriter() { |
| if (close_on_destruction_ && output_ != nullptr) { |
| fclose(output_); |
| } |
| } |
| |
| bool Write(const char* format, ...) override { |
| bool success; |
| va_list ap; |
| va_start(ap, format); |
| success = vfprintf(output_, format, ap) >= 0; |
| va_end(ap); |
| no_error_ = no_error_ && success; |
| return success; |
| } |
| |
| bool Close() override { |
| if (output_ != nullptr) { |
| no_error_ = fclose(output_) == 0 && no_error_; |
| output_ = nullptr; |
| } |
| return no_error_; |
| } |
| |
| private: |
| bool no_error_ = true; |
| FILE* output_; |
| bool close_on_destruction_; |
| }; // class StringCodeWriter |
| |
| } // namespace |
| |
| CodeWriterPtr GetFileWriter(const std::string& output_file) { |
| CodeWriterPtr result; |
| FILE* to = nullptr; |
| bool close_on_destruction = true; |
| if (output_file == "-") { |
| to = stdout; |
| close_on_destruction = false; |
| } else { |
| // open file in binary mode to ensure that the tool produces the |
| // same output on all platforms !! |
| to = fopen(output_file.c_str(), "wb"); |
| } |
| |
| if (to != nullptr) { |
| result.reset(new FileCodeWriter(to, close_on_destruction)); |
| } else { |
| cerr << "unable to open " << output_file << " for write" << endl; |
| } |
| |
| return result; |
| } |
| |
| CodeWriterPtr GetStringWriter(std::string* output_buffer) { |
| return CodeWriterPtr(new StringCodeWriter(output_buffer)); |
| } |
| |
| } // namespace aidl |
| } // namespace android |