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/**
* @file llvfile.h
* @brief Definition of virtual file
*
* $LicenseInfo:firstyear=2002&license=viewergpl$
*
* Copyright (c) 2002-2009, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at
* http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#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;
BOOL mOnReadQueue;
S32 mBytesRead;
LLVFSThread::handle_t mHandle;
};
#endif
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