| /** @file |
| |
| A brief file description |
| |
| @section license License |
| |
| 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. |
| */ |
| |
| /************************************************************************** |
| MIOBufferWriter.cc |
| |
| **************************************************************************/ |
| |
| #include "I_MIOBufferWriter.h" |
| |
| // |
| // MIOBufferWriter |
| // |
| MIOBufferWriter & |
| MIOBufferWriter::write(const void *data_, size_t length) |
| { |
| const char *data = static_cast<const char *>(data_); |
| |
| while (length) { |
| IOBufferBlock *iobbPtr = _miob->first_write_block(); |
| |
| if (!iobbPtr) { |
| addBlock(); |
| |
| iobbPtr = _miob->first_write_block(); |
| |
| ink_assert(iobbPtr); |
| } |
| |
| size_t writeSize = iobbPtr->write_avail(); |
| |
| if (length < writeSize) { |
| writeSize = length; |
| } |
| |
| std::memcpy(iobbPtr->end(), data, writeSize); |
| iobbPtr->fill(writeSize); |
| |
| data += writeSize; |
| length -= writeSize; |
| |
| _numWritten += writeSize; |
| } |
| |
| return *this; |
| } |
| |
| #if defined(UNIT_TEST_BUFFER_WRITER) |
| |
| // Dummys just for linkage (never called). |
| |
| std::ostream & |
| MIOBufferWriter::operator>>(std::ostream &stream) const |
| { |
| return stream; |
| } |
| |
| ssize_t |
| MIOBufferWriter::operator>>(int fd) const |
| { |
| return 0; |
| } |
| |
| #else |
| |
| std::ostream & |
| MIOBufferWriter::operator>>(std::ostream &stream) const |
| { |
| IOBufferReader *r = _miob->alloc_reader(); |
| if (r) { |
| IOBufferBlock *b; |
| while (nullptr != (b = r->get_current_block())) { |
| auto n = b->read_avail(); |
| stream.write(b->start(), n); |
| r->consume(n); |
| } |
| _miob->dealloc_reader(r); |
| } |
| return stream; |
| } |
| |
| ssize_t |
| MIOBufferWriter::operator>>(int fd) const |
| { |
| ssize_t zret = 0; |
| IOBufferReader *reader = _miob->alloc_reader(); |
| if (reader) { |
| IOBufferBlock *b; |
| while (nullptr != (b = reader->get_current_block())) { |
| auto n = b->read_avail(); |
| auto r = ::write(fd, b->start(), n); |
| if (r <= 0) { |
| break; |
| } else { |
| reader->consume(r); |
| zret += r; |
| } |
| } |
| _miob->dealloc_reader(reader); |
| } |
| return zret; |
| } |
| |
| #endif // defined(UNIT_TEST_BUFFER_WRITER) |