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// **************************************************************************
// * This file is part of the FreeFileSync project. It is distributed under *
// * GNU General Public License: http://www.gnu.org/licenses/gpl.html *
// * Copyright (C) Zenju (zenju AT gmx DOT de) - All Rights Reserved *
// **************************************************************************
#ifndef FILEIO_H_INCLUDED
#define FILEIO_H_INCLUDED
#include "file_io_base.h"
#include "file_error.h"
#ifdef FFS_WIN
#include "win.h" //includes "windows.h"
#elif defined FFS_LINUX || defined FFS_MAC
#include <cstdio>
#include <sys/stat.h>
#endif
namespace zen
{
#ifdef FFS_WIN
static const char LINE_BREAK[] = "\r\n";
#elif defined FFS_LINUX
static const char LINE_BREAK[] = "\n";
#elif defined FFS_MAC
static const char LINE_BREAK[] = "\r";
#endif
//buffered file IO optimized for sequential read/write accesses + better error reporting + long path support (following symlinks)
#ifdef FFS_WIN
typedef HANDLE FileHandle;
#elif defined FFS_LINUX || defined FFS_MAC
typedef FILE* FileHandle;
#endif
class FileInput : public FileInputBase
{
public:
FileInput(const Zstring& filename); //throw FileError, ErrorNotExisting
FileInput(FileHandle handle, const Zstring& filename); //takes ownership!
~FileInput();
virtual size_t read(void* buffer, size_t bytesToRead); //throw FileError; returns actual number of bytes read
//expected to fill buffer completely unless "end of file"
private:
FileHandle fileHandle;
};
class FileOutput : public FileOutputBase
{
public:
FileOutput(const Zstring& filename, AccessFlag access); //throw FileError, ErrorTargetPathMissing, ErrorTargetExisting
FileOutput(FileHandle handle, const Zstring& filename); //takes ownership!
~FileOutput();
virtual void write(const void* buffer, size_t bytesToWrite); //throw FileError
private:
FileHandle fileHandle;
};
#if defined FFS_LINUX || defined FFS_MAC
class FileInputUnbuffered : public FileInputBase
{
public:
FileInputUnbuffered(const Zstring& filename); //throw FileError, ErrorNotExisting
~FileInputUnbuffered();
//considering safe-read.c it seems buffer size should be a multiple of 8192
virtual size_t read(void* buffer, size_t bytesToRead); //throw FileError; returns actual number of bytes read
//we should not rely on buffer being filled completely!
int getDescriptor() { return fdFile;}
private:
int fdFile;
};
class FileOutputUnbuffered : public FileOutputBase
{
public:
//creates a new file (no overwrite allowed!)
FileOutputUnbuffered(const Zstring& filename, mode_t mode); //throw FileError, ErrorTargetPathMissing, ErrorTargetExisting
~FileOutputUnbuffered();
virtual void write(const void* buffer, size_t bytesToWrite); //throw FileError
int getDescriptor() { return fdFile;}
private:
int fdFile;
};
#endif
}
#endif // FILEIO_H_INCLUDED
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