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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.
#ifndef NET_BASE_UPLOAD_BYTES_ELEMENT_READER_H_
#define NET_BASE_UPLOAD_BYTES_ELEMENT_READER_H_
#include <stddef.h>
#include <stdint.h>
#include <string>
#include <vector>
#include "base/compiler_specific.h"
#include "base/containers/span.h"
#include "base/memory/raw_span.h"
#include "net/base/net_export.h"
#include "net/base/upload_element_reader.h"
namespace net {
// An UploadElementReader implementation for bytes. The caller owns |bytes|,
// and is responsible for ensuring it outlives the UploadBytesElementReader.
class NET_EXPORT UploadBytesElementReader : public UploadElementReader {
public:
explicit UploadBytesElementReader(base::span<const uint8_t> bytes);
UploadBytesElementReader(const UploadBytesElementReader&) = delete;
UploadBytesElementReader& operator=(const UploadBytesElementReader&) = delete;
~UploadBytesElementReader() override;
base::span<const uint8_t> bytes() const { return bytes_; }
// UploadElementReader overrides:
const UploadBytesElementReader* AsBytesReader() const override;
int Init(CompletionOnceCallback callback) override;
uint64_t GetContentLength() const override;
uint64_t BytesRemaining() const override;
bool IsInMemory() const override;
int Read(IOBuffer* buf,
int buf_length,
CompletionOnceCallback callback) override;
private:
const base::raw_span<const uint8_t, DanglingUntriaged> bytes_;
size_t offset_ = 0;
};
// A subclass of UplodBytesElementReader which owns the data given as a vector.
class NET_EXPORT UploadOwnedBytesElementReader
: public UploadBytesElementReader {
public:
// |data| is cleared by this ctor.
explicit UploadOwnedBytesElementReader(std::vector<char>* data);
UploadOwnedBytesElementReader(const UploadOwnedBytesElementReader&) = delete;
UploadOwnedBytesElementReader& operator=(
const UploadOwnedBytesElementReader&) = delete;
~UploadOwnedBytesElementReader() override;
// Creates UploadOwnedBytesElementReader with a string.
static std::unique_ptr<UploadOwnedBytesElementReader> CreateWithString(
const std::string& string);
private:
std::vector<char> data_;
};
} // namespace net
#endif // NET_BASE_UPLOAD_BYTES_ELEMENT_READER_H_
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