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// Copyright 2012 The Chromium Authors
// 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 "base/numerics/safe_conversions.h"
#include "net/base/io_buffer.h"
#include "net/base/net_errors.h"
namespace net {
UploadBytesElementReader::UploadBytesElementReader(
base::span<const uint8_t> bytes)
: bytes_(bytes) {}
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 bytes_.size();
}
uint64_t UploadBytesElementReader::BytesRemaining() const {
return bytes_.size() - offset_;
}
bool UploadBytesElementReader::IsInMemory() const {
return true;
}
int UploadBytesElementReader::Read(IOBuffer* buf,
int buf_length,
CompletionOnceCallback callback) {
base::span<const uint8_t> bytes_to_read =
bytes_.subspan(offset_, std::min(static_cast<size_t>(BytesRemaining()),
base::checked_cast<size_t>(buf_length)));
if (!bytes_to_read.empty()) {
buf->span().copy_prefix_from(bytes_to_read);
}
offset_ += bytes_to_read.size();
return bytes_to_read.size();
}
UploadOwnedBytesElementReader::UploadOwnedBytesElementReader(
std::vector<char>* data)
: UploadBytesElementReader(base::as_byte_span(*data)) {
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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