/* -*- C++ -*-
 *
 *  SarReader.h - Reader from a SAR archive
 *
 *  Copyright (c) 2001-2014 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 __SAR_READER_H__
#define __SAR_READER_H__

#include "DirectReader.h"

class SarReader : public DirectReader {
public:
    SarReader(const char* path = NULL, const unsigned char* key_table = NULL);
    ~SarReader();

    int open(const char* name = NULL);
    int close();
    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 writeHeader(FILE* fp);
    size_t putFile(FILE* fp, int no, size_t offset, size_t length, size_t original_length, bool modified_flag, unsigned char* buffer);

protected:
    ArchiveInfo archive_info;
    ArchiveInfo *root_archive_info, *last_archive_info;
    int num_of_sar_archives;

    void readArchive(ArchiveInfo* ai, int archive_type = ARCHIVE_TYPE_SAR, unsigned int offset = 0);
    int readArchiveSub(ArchiveInfo* ai, int archive_type = ARCHIVE_TYPE_SAR, bool check_size = true);
    int getIndexFromFile(ArchiveInfo* ai, const char* file_name);
    size_t getFileSub(ArchiveInfo* ai, const char* file_name, unsigned char* buf);

    int writeHeaderSub(ArchiveInfo* ai, FILE* fp, int archive_type = ARCHIVE_TYPE_SAR, int nsa_offset = 0);
    size_t putFileSub(ArchiveInfo* ai, FILE* fp, int no, size_t offset, size_t length, size_t original_length, int compression_type, bool modified_flag, unsigned char* buffer);
};

#endif // __SAR_READER_H__
