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- // Copyright (c) 2012 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "net/base/upload_bytes_element_reader.h"
- #include "base/check_op.h"
- #include "net/base/io_buffer.h"
- #include "net/base/net_errors.h"
- namespace net {
- UploadBytesElementReader::UploadBytesElementReader(const char* bytes,
- uint64_t length)
- : bytes_(bytes), length_(length) {}
- UploadBytesElementReader::~UploadBytesElementReader() = default;
- const UploadBytesElementReader*
- UploadBytesElementReader::AsBytesReader() const {
- return this;
- }
- int UploadBytesElementReader::Init(CompletionOnceCallback callback) {
- offset_ = 0;
- return OK;
- }
- uint64_t UploadBytesElementReader::GetContentLength() const {
- return length_;
- }
- uint64_t UploadBytesElementReader::BytesRemaining() const {
- return length_ - offset_;
- }
- bool UploadBytesElementReader::IsInMemory() const {
- return true;
- }
- int UploadBytesElementReader::Read(IOBuffer* buf,
- int buf_length,
- CompletionOnceCallback callback) {
- DCHECK_LT(0, buf_length);
- const int num_bytes_to_read = static_cast<int>(
- std::min(BytesRemaining(), static_cast<uint64_t>(buf_length)));
- // Check if we have anything to copy first, because we are getting
- // the address of an element in |bytes_| and that will throw an
- // exception if |bytes_| is an empty vector.
- if (num_bytes_to_read > 0)
- memcpy(buf->data(), bytes_ + offset_, num_bytes_to_read);
- offset_ += num_bytes_to_read;
- return num_bytes_to_read;
- }
- UploadOwnedBytesElementReader::UploadOwnedBytesElementReader(
- std::vector<char>* data)
- : UploadBytesElementReader(data->data(), data->size()) {
- data_.swap(*data);
- }
- UploadOwnedBytesElementReader::~UploadOwnedBytesElementReader() = default;
- std::unique_ptr<UploadOwnedBytesElementReader>
- UploadOwnedBytesElementReader::CreateWithString(const std::string& string) {
- std::vector<char> data(string.begin(), string.end());
- return std::make_unique<UploadOwnedBytesElementReader>(&data);
- }
- } // namespace net
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