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// This file is part of par2cmdline (a PAR 2.0 compatible file verification and
// repair tool). See http://parchive.sourceforge.net for details of PAR 2.0.
//
// Copyright (c) 2003 Peter Brian Clements
//
// par2cmdline 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.
//
// par2cmdline 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, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
#ifndef __DISKFILE_H__
#define __DISKFILE_H__
// A disk file can be any type of file that par2cmdline needs
// to read or write data from or to.
class DiskFile
{
public:
DiskFile(void);
~DiskFile(void);
// Create a file and set its length
bool Create(string filename, u64 filesize);
// Write some data to the file
bool Write(u64 offset, const void *buffer, size_t length);
// Open the file
bool Open(void);
bool Open(string filename);
bool Open(string filename, u64 filesize);
// Check to see if the file is open
#ifdef WIN32
bool IsOpen(void) const {return hFile != INVALID_HANDLE_VALUE;}
#else
bool IsOpen(void) const {return file != 0;}
#endif
// Read some data from the file
bool Read(u64 offset, void *buffer, size_t length);
// Close the file
void Close(void);
// Get the size of the file
u64 FileSize(void) const {return filesize;}
// Get the name of the file
string FileName(void) const {return filename;}
// Does the file exist
bool Exists(void) const {return exists;}
// Rename the file
bool Rename(void); // Pick a filename automatically
bool Rename(string filename);
// Delete the file
bool Delete(void);
public:
static string GetCanonicalPathname(string filename);
static void SplitFilename(string filename, string &path, string &name);
static string TranslateFilename(string filename);
static bool FileExists(string filename);
static u64 GetFileSize(string filename);
// Search the specified path for files which match the specified wildcard
// and return their names in a list.
static list<string>* FindFiles(string path, string wildcard);
protected:
string filename;
u64 filesize;
// OS file handle
#ifdef WIN32
HANDLE hFile;
#else
FILE *file;
#endif
// Current offset within the file
u64 offset;
// Does the file exist
bool exists;
protected:
#ifdef WIN32
static string ErrorMessage(DWORD error);
#endif
};
// This class keeps track of which DiskFile objects exist
// and which file on disk they are associated with.
// It is used to avoid a file being processed twice.
class DiskFileMap
{
public:
DiskFileMap(void);
~DiskFileMap(void);
bool Insert(DiskFile *diskfile);
void Remove(DiskFile *diskfile);
DiskFile* Find(string filename) const;
protected:
map<string, DiskFile*> diskfilemap; // Map from filename to DiskFile
};
#endif // __DISKFILE_H__
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