NsaReader.h

/* -*- C++ -*-
 *
 *  NsaReader.h - Reader from a NSA archive
 *
 *  Copyright (c) 2001-2019 Ogapee. All rights reserved.
 *
 *  ogapee@aqua.dti2.ne.jp
 *
 *  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, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef __NSA_READER_H__
#define __NSA_READER_H__

#include "SarReader.h"
#define MAX_EXTRA_ARCHIVE 9
#define MAX_NS2_ARCHIVE 100

class NsaReader : public SarReader
{
public:
    NsaReader( unsigned int nsa_offset=0, char *path=NULL, int archive_type=ARCHIVE_TYPE_NSA, const unsigned char *key_table=NULL );
    ~NsaReader();

    int open( const char *nsa_path=NULL );
    const char *getArchiveName() const;
    int getNumFiles();
    
    size_t getFileLength( const char *file_name );
    size_t getFile( const char *file_name, unsigned char *buf, int *location=NULL );
    FileInfo getFileByIndex( unsigned int index );

    int openForConvert( char *nsa_name, int archive_type=ARCHIVE_TYPE_NSA, unsigned int nsa_offset=0 );
    int writeHeader( FILE *fp, int archive_type=ARCHIVE_TYPE_NSA, int nsa_offset=0 );
    size_t putFile( FILE *fp, int no, size_t offset, size_t length, size_t original_length, int compression_type, bool modified_flag, unsigned char *buffer );
    
private:
    bool sar_flag;
    int nsa_offset;
    int archive_type;
    int num_of_nsa_archives[2];
    int num_of_ns2_archives;
    const char *nsa_archive_ext;
    const char *ns2_archive_ext;
    ArchiveInfo archive_info_patch;
    ArchiveInfo archive_info2[2][MAX_EXTRA_ARCHIVE];
    ArchiveInfo archive_info_ns2[MAX_NS2_ARCHIVE];

    size_t getFileLengthSub( ArchiveInfo *ai, const char *file_name );
};

#endif // __NSA_READER_H__