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/*
* This file is part of nzbget. See <http://nzbget.net>.
*
* Copyright (C) 2007-2017 Andrey Prygunkov <hugbug@users.sourceforge.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef FILESYSTEM_H
#define FILESYSTEM_H
#include "NString.h"
class FileSystem
{
public:
static CString GetLastErrorMessage();
static char* BaseFileName(const char* filename);
static bool SameFilename(const char* filename1, const char* filename2);
static void NormalizePathSeparators(char* path);
static bool LoadFileIntoBuffer(const char* filename, CharBuffer& buffer, bool addTrailingNull);
static bool SaveBufferIntoFile(const char* filename, const char* buffer, int bufLen);
static bool AllocateFile(const char* filename, int64 size, bool sparse, CString& errmsg);
static bool TruncateFile(const char* filename, int size);
static CString MakeValidFilename(const char* filename, bool allowSlashes = false);
static bool ReservedChar(char ch);
static CString MakeUniqueFilename(const char* destDir, const char* basename);
static bool MoveFile(const char* srcFilename, const char* dstFilename);
static bool CopyFile(const char* srcFilename, const char* dstFilename);
static bool DeleteFile(const char* filename);
static bool FileExists(const char* filename);
static bool DirectoryExists(const char* dirFilename);
static bool CreateDirectory(const char* dirFilename);
/* Delete empty directory */
static bool RemoveDirectory(const char* dirFilename);
/* Delete directory which is empty or contains only hidden files or directories */
static bool DeleteDirectory(const char* dirFilename);
static bool DeleteDirectoryWithContent(const char* dirFilename, CString& errmsg);
static bool ForceDirectories(const char* path, CString& errmsg);
static CString GetCurrentDirectory();
static bool SetCurrentDirectory(const char* dirFilename);
static int64 FileSize(const char* filename);
static int64 FreeDiskSize(const char* path);
static bool DirEmpty(const char* dirFilename);
static bool RenameBak(const char* filename, const char* bakPart, bool removeOldExtension, CString& newName);
#ifndef WIN32
static CString ExpandHomePath(const char* filename);
static void FixExecPermission(const char* filename);
#endif
static CString ExpandFileName(const char* filename);
static CString GetExeFileName(const char* argv0);
/* Flush disk buffers for file with given descriptor */
static bool FlushFileBuffers(int fileDescriptor, CString& errmsg);
/* Flush disk buffers for file metadata (after file renaming) */
static bool FlushDirBuffers(const char* filename, CString& errmsg);
static CString MakeExtendedPath(const char* path, bool force);
#ifdef WIN32
static WString UtfPathToWidePath(const char* utfpath);
static CString WidePathToUtfPath(const wchar_t* wpath);
static CString MakeCanonicalPath(const char* filename);
static bool NeedLongPath(const char* path);
#endif
};
class DirBrowser
{
public:
#ifdef DIRBROWSER_SNAPSHOT
DirBrowser(const char* path, bool snapshot = true);
#else
DirBrowser(const char* path);
#endif
~DirBrowser();
const char* Next();
private:
#ifdef WIN32
WIN32_FIND_DATAW m_findData;
HANDLE m_file;
bool m_first;
CString m_filename;
#else
DIR* m_dir = nullptr;
struct dirent* m_findData;
#endif
#ifdef DIRBROWSER_SNAPSHOT
bool m_snapshot;
typedef std::deque<CString> FileList;
FileList m_snapshotFiles;
FileList::iterator m_snapshotIter;
#endif
const char* InternNext();
};
class DiskFile
{
public:
enum EOpenMode
{
omRead, // file must exist
omReadWrite, // file must exist
omWrite, // create new or overwrite existing
omAppend // create new or append to existing
};
enum ESeekOrigin
{
soSet,
soCur,
soEnd
};
DiskFile() = default;
DiskFile(const DiskFile&) = delete;
~DiskFile();
bool Open(const char* filename, EOpenMode mode);
bool Close();
bool Active() { return m_file != nullptr; }
int64 Read(void* buffer, int64 size);
int64 Write(const void* buffer, int64 size);
int64 Position();
bool Seek(int64 position, ESeekOrigin origin = soSet);
bool Eof();
bool Error();
int64 Print(const char* format, ...) PRINTF_SYNTAX(2);
char* ReadLine(char* buffer, int64 size);
bool SetWriteBuffer(int size);
bool Flush();
bool Sync(CString& errmsg);
private:
FILE* m_file = nullptr;
};
#endif
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