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/**
* @file llvfile.h
* @brief Definition of virtual file
*
* $LicenseInfo:firstyear=2002&license=viewerlgpl$
* 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_LLVFILE_H
#define LL_LLVFILE_H
#include "lluuid.h"
#include "llassettype.h"
#include "llvfs.h"
#include "llvfsthread.h"
class LLVFile
{
public:
LLVFile(LLVFS *vfs, const LLUUID &file_id, const LLAssetType::EType file_type, S32 mode = LLVFile::READ);
~LLVFile();
BOOL read(U8 *buffer, S32 bytes, BOOL async = FALSE, F32 priority = 128.f); /* Flawfinder: ignore */
static U8* readFile(LLVFS *vfs, const LLUUID &uuid, LLAssetType::EType type, S32* bytes_read = 0);
void setReadPriority(const F32 priority);
BOOL isReadComplete();
S32 getLastBytesRead();
BOOL eof();
BOOL write(const U8 *buffer, S32 bytes);
static BOOL writeFile(const U8 *buffer, S32 bytes, LLVFS *vfs, 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(EVFSLock lock);
void waitForLock(EVFSLock lock);
static void initClass(LLVFSThread* vfsthread = NULL);
static void cleanupClass();
static LLVFSThread* getVFSThread() { return sVFSThread; }
protected:
static LLVFSThread* sVFSThread;
static BOOL sAllocdVFSThread;
U32 threadPri() { return LLVFSThread::PRIORITY_NORMAL + llmin((U32)mPriority,(U32)0xfff); }
public:
static const S32 READ;
static const S32 WRITE;
static const S32 READ_WRITE;
static const S32 APPEND;
protected:
LLAssetType::EType mFileType;
LLUUID mFileID;
S32 mPosition;
S32 mMode;
LLVFS *mVFS;
F32 mPriority;
S32 mBytesRead;
LLVFSThread::handle_t mHandle;
};
#endif
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