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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.
#ifndef NET_BASE_UPLOAD_BYTES_ELEMENT_READER_H_
#define NET_BASE_UPLOAD_BYTES_ELEMENT_READER_H_
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "net/base/upload_element_reader.h"
namespace net {
// An UploadElementReader implementation for bytes.
// |data| should outlive this class because this class does not take the
// ownership of the data.
class NET_EXPORT UploadBytesElementReader : public UploadElementReader {
public:
UploadBytesElementReader(const char* bytes, uint64 length);
virtual ~UploadBytesElementReader();
const char* bytes() const { return bytes_; }
uint64 length() const { return length_; }
// UploadElementReader overrides:
virtual const UploadBytesElementReader* AsBytesReader() const OVERRIDE;
virtual int Init(const CompletionCallback& callback) OVERRIDE;
virtual int InitSync() OVERRIDE;
virtual uint64 GetContentLength() const OVERRIDE;
virtual uint64 BytesRemaining() const OVERRIDE;
virtual bool IsInMemory() const OVERRIDE;
virtual int Read(IOBuffer* buf,
int buf_length,
const CompletionCallback& callback) OVERRIDE;
virtual int ReadSync(IOBuffer* buf, int buf_length) OVERRIDE;
private:
const char* const bytes_;
const uint64 length_;
uint64 offset_;
DISALLOW_COPY_AND_ASSIGN(UploadBytesElementReader);
};
// 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);
virtual ~UploadOwnedBytesElementReader();
// Creates UploadOwnedBytesElementReader with a string.
static UploadOwnedBytesElementReader* CreateWithString(
const std::string& string);
private:
std::vector<char> data_;
DISALLOW_COPY_AND_ASSIGN(UploadOwnedBytesElementReader);
};
} // namespace net
#endif // NET_BASE_UPLOAD_BYTES_ELEMENT_READER_H_
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