/* this header file contains function declarations used parsing a tar file
 *
 * by Marcel Nowicki (github@epenis.de | github.com/blindi0815)
 */

#include <fstream>
#include <map>
#include <string>
#include "tarconst.h"
#include <vector>


#ifndef TARSTATS___TARFUNC_H
#define TARSTATS___TARFUNC_H
namespace tar {
// checks if a valid modern tar file - ustar
    bool validTar(std::istream &file);

// check if tar in gzfile is valid
    bool gzValidTar(std::string filename);

// checks if a 512byte block consist only of 0 or \0
    bool eof(const char *buf);

// gets size of an item in bytes. assumes octal encoding.
    uint64_t getitemsize(const char *buf);

// gets type of an item
    std::string getitemtype(char &n);

// to write stats to console in default style
    void consolestats(std::map<std::string, uintmax_t> &typecount, uintmax_t tarfilesize, uintmax_t sizeofall);

// to write global stats to stdout
    void consoleglobalstats (std::map<std::string, uintmax_t> &typecount, uintmax_t itemfilesize,
                             uintmax_t szfiles, std::vector<std::string> &files);

// to write default console output to txt file
    void txtfilestats(std::map<std::string, uintmax_t> &typecount, uintmax_t tarfilesize, uintmax_t sizeofall,
                      std::string archiveName);

// print out helpertext
    void printhelp();

// check if valid GNU ZIP file via magic byte.
    bool validGzip(std::string &filename);
// check if file can be opened
    bool fileOpen(std::string &filename);
}


#endif //TARSTATS___TARFUNC_H