cef/libcef/stream_impl.h

165 lines
3.8 KiB
C++

// Copyright (c) 2008 The Chromium Embedded Framework 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 _STREAM_IMPL_H
#define _STREAM_IMPL_H
#include "include/cef_stream.h"
#include <stdio.h>
// Implementation of CefStreamReader for files.
class CefFileReader : public CefStreamReader
{
public:
CefFileReader(FILE* file, bool close);
virtual ~CefFileReader();
virtual size_t Read(void* ptr, size_t size, size_t n) OVERRIDE;
virtual int Seek(long offset, int whence) OVERRIDE;
virtual long Tell() OVERRIDE;
virtual int Eof() OVERRIDE;
protected:
bool close_;
FILE *file_;
IMPLEMENT_REFCOUNTING(CefFileReader);
IMPLEMENT_LOCKING(CefFileReader);
};
// Implementation of CefStreamWriter for files.
class CefFileWriter : public CefStreamWriter
{
public:
CefFileWriter(FILE* file, bool close);
virtual ~CefFileWriter();
virtual size_t Write(const void* ptr, size_t size, size_t n) OVERRIDE;
virtual int Seek(long offset, int whence) OVERRIDE;
virtual long Tell() OVERRIDE;
virtual int Flush() OVERRIDE;
protected:
FILE *file_;
bool close_;
IMPLEMENT_REFCOUNTING(CefFileWriter);
IMPLEMENT_LOCKING(CefFileWriter);
};
// Implementation of CefStreamReader for byte buffers.
class CefBytesReader : public CefStreamReader
{
public:
CefBytesReader(void* data, long datasize, bool copy);
virtual ~CefBytesReader();
virtual size_t Read(void* ptr, size_t size, size_t n) OVERRIDE;
virtual int Seek(long offset, int whence) OVERRIDE;
virtual long Tell() OVERRIDE;
virtual int Eof() OVERRIDE;
void SetData(void* data, long datasize, bool copy);
void* GetData() { return data_; }
size_t GetDataSize() { return offset_; }
protected:
void* data_;
size_t datasize_;
bool copy_;
size_t offset_;
IMPLEMENT_REFCOUNTING(CefBytesReader);
IMPLEMENT_LOCKING(CefBytesReader);
};
// Implementation of CefStreamWriter for byte buffers.
class CefBytesWriter : public CefStreamWriter
{
public:
CefBytesWriter(size_t grow);
virtual ~CefBytesWriter();
virtual size_t Write(const void* ptr, size_t size, size_t n) OVERRIDE;
virtual int Seek(long offset, int whence) OVERRIDE;
virtual long Tell() OVERRIDE;
virtual int Flush() OVERRIDE;
void* GetData() { return data_; }
size_t GetDataSize() { return offset_; }
std::string GetDataString();
protected:
size_t Grow(size_t size);
size_t grow_;
void* data_;
size_t datasize_;
size_t offset_;
IMPLEMENT_REFCOUNTING(CefBytesWriter);
IMPLEMENT_LOCKING(CefBytesWriter);
};
// Implementation of CefStreamReader for handlers.
class CefHandlerReader : public CefStreamReader
{
public:
CefHandlerReader(CefRefPtr<CefReadHandler> handler) : handler_(handler) {}
virtual size_t Read(void* ptr, size_t size, size_t n) OVERRIDE
{
return handler_->Read(ptr, size, n);
}
virtual int Seek(long offset, int whence) OVERRIDE
{
return handler_->Seek(offset, whence);
}
virtual long Tell() OVERRIDE
{
return handler_->Tell();
}
virtual int Eof() OVERRIDE
{
return handler_->Eof();
}
protected:
CefRefPtr<CefReadHandler> handler_;
IMPLEMENT_REFCOUNTING(CefHandlerReader);
};
// Implementation of CefStreamWriter for handlers.
class CefHandlerWriter : public CefStreamWriter
{
public:
CefHandlerWriter(CefRefPtr<CefWriteHandler> handler) : handler_(handler) {}
virtual size_t Write(const void* ptr, size_t size, size_t n) OVERRIDE
{
return handler_->Write(ptr, size, n);
}
virtual int Seek(long offset, int whence) OVERRIDE
{
return handler_->Seek(offset, whence);
}
virtual long Tell() OVERRIDE
{
return handler_->Tell();
}
virtual int Flush() OVERRIDE
{
return handler_->Flush();
}
protected:
CefRefPtr<CefWriteHandler> handler_;
IMPLEMENT_REFCOUNTING(CefHandlerWriter);
};
#endif // _STREAM_IMPL_H