| /** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 <cstdint> |
| #include <algorithm> |
| #include "io/BufferStream.h" |
| namespace org { |
| namespace apache { |
| namespace nifi { |
| namespace minifi { |
| namespace io { |
| |
| int BufferStream::write(const uint8_t *value, int size) { |
| gsl_Expects(size >= 0); |
| buffer_.reserve(buffer_.size() + size); |
| std::copy(value, value + size, std::back_inserter(buffer_)); |
| return size; |
| } |
| |
| int BufferStream::read(uint8_t *buf, int len) { |
| gsl_Expects(len >= 0); |
| len = (std::min<uint64_t>)(len, buffer_.size() - readOffset_); |
| auto begin = buffer_.begin() + readOffset_; |
| std::copy(begin, begin + len, buf); |
| |
| // increase offset for the next read |
| readOffset_ += len; |
| |
| return len; |
| } |
| |
| } /* namespace io */ |
| } /* namespace minifi */ |
| } /* namespace nifi */ |
| } /* namespace apache */ |
| } /* namespace org */ |