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/**
* @file filesystem.h
* @brief Simulate local file system operations.
* @Note The initial implementation does actually use standard C++
* file operations but eventually, there will be another
* layer that caches and manages file meta data too.
*
* $LicenseInfo:firstyear=2002&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef LL_FILESYSTEM_H
#define LL_FILESYSTEM_H
#include "lluuid.h"
#include "llassettype.h"
class LLFileSystem
{
public:
LLFileSystem(const LLUUID &file_id, const LLAssetType::EType file_type, S32 mode = LLFileSystem::READ);
~LLFileSystem();
BOOL read(U8 *buffer, S32 bytes, BOOL async = FALSE, F32 priority = 128.f); /* Flawfinder: ignore */
BOOL isReadComplete();
S32 getLastBytesRead();
BOOL eof();
BOOL write(const U8 *buffer, S32 bytes);
static BOOL writeFile(const U8 *buffer, S32 bytes, const LLUUID &uuid, LLAssetType::EType type);
BOOL seek(S32 offset, S32 origin = -1);
S32 tell() const;
S32 getSize();
S32 getMaxSize();
BOOL setMaxSize(S32 size);
BOOL rename(const LLUUID &new_id, const LLAssetType::EType new_type);
BOOL remove();
bool isLocked();
void waitForLock();
static bool getExists(const LLUUID &file_id, const LLAssetType::EType file_type);
static bool removeFile(const LLUUID &file_id, const LLAssetType::EType file_type);
static bool renameFile(const LLUUID &old_file_id, const LLAssetType::EType old_file_type,
const LLUUID &new_file_id, const LLAssetType::EType new_file_type);
static S32 getFileSize(const LLUUID &file_id, const LLAssetType::EType file_type);
static void initClass();
static void cleanupClass();
public:
static const S32 READ;
static const S32 WRITE;
static const S32 READ_WRITE;
static const S32 APPEND;
protected:
LLAssetType::EType mFileType;
BOOL mReadComplete;
LLUUID mFileID;
S32 mPosition;
S32 mMode;
S32 mBytesRead;
};
#endif // LL_FILESYSTEM_H
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