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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#ifndef __PAR1REPAIRER_H__
#define __PAR1REPAIRER_H__
class Par1Repairer
{
public:
Par1Repairer(void);
~Par1Repairer(void);
Result Process(const CommandLine &commandline, bool dorepair);
protected:
// Load the main PAR file
bool LoadRecoveryFile(string filename);
// Load other PAR files related to the main PAR file
bool LoadOtherRecoveryFiles(string filename);
// Load any extra PAR files specified on the command line
bool LoadExtraRecoveryFiles(const list<CommandLine::ExtraFile> &extrafiles);
// Check for the existence of and verify each of the source files
bool VerifySourceFiles(void);
// Check any other files specified on the command line to see if they are
// actually copies of the source files that have the wrong filename
bool VerifyExtraFiles(const list<CommandLine::ExtraFile> &extrafiles);
// Attempt to match the data in the DiskFile with the source file
bool VerifyDataFile(DiskFile *diskfile, Par1RepairerSourceFile *sourcefile);
// Determine how many files are missing, damaged etc.
void UpdateVerificationResults(void);
// Check the verification results and report the details
bool CheckVerificationResults(void);
// Rename any damaged or missnamed target files.
bool RenameTargetFiles(void);
// Work out which files are being repaired, create them, and allocate
// target DataBlocks to them, and remember them for later verification.
bool CreateTargetFiles(void);
// Work out which data blocks are available, which need to be recreated,
// and compute the appropriate Reed Solomon matrix.
bool ComputeRSmatrix(void);
// Allocate memory buffers for reading and writing data to disk.
bool AllocateBuffers(size_t memorylimit);
// Read source data, process it through the RS matrix and write it to disk.
bool ProcessData(u64 blockoffset, size_t blocklength);
// Verify that all of the reconstructed target files are now correct
bool VerifyTargetFiles(void);
// Delete all of the partly reconstructed files
bool DeleteIncompleteTargetFiles(void);
protected:
CommandLine::NoiseLevel noiselevel; // How noisy we should be
string searchpath; // Where to find files on disk
DiskFileMap diskfilemap; // Map from filename to DiskFile
map<u32, DataBlock*> recoveryblocks; // The recovery data (mapped by exponent)
unsigned char *filelist;
u32 filelistsize;
u64 blocksize; // The size of recovery and data blocks
u64 chunksize; // How much of a block can be processed.
vector<Par1RepairerSourceFile*> sourcefiles;
vector<Par1RepairerSourceFile*> extrafiles;
u32 completefilecount;
u32 renamedfilecount;
u32 damagedfilecount;
u32 missingfilecount;
list<Par1RepairerSourceFile*> verifylist;
vector<DataBlock*> inputblocks; // Which DataBlocks will be read from disk
vector<DataBlock*> outputblocks; // Which DataBlocks have to calculated using RS
ReedSolomon<Galois8> rs; // The Reed Solomon matrix.
u64 progress; // How much data has been processed.
u64 totaldata; // Total amount of data to be processed.
size_t inputbuffersize;
u8 *inputbuffer; // Buffer for reading DataBlocks (chunksize)
size_t outputbufferalignment;
size_t outputbuffersize;
u8 *outputbuffer; // Buffer for writing DataBlocks (chunksize * missingblockcount)
bool ignore16kfilehash; // The 16k file hash values may be invalid
};
#endif // __PAR1REPAIRER_H__
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