endeavr_marcel/Tarstats-pp
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this added a help and usage message

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Marcel Nowicki
2022-02-09 21:59:52 +01:00
parent 3c3306f395
commit e3d451edcc
1 changed files with 17 additions and 10 deletions
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27
main.cpp
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@@ -56,17 +56,27 @@ std::string getitemtype(char &n) {
int main(int argc, char** argv) { int main(int argc, char** argv) {
// set general variables // GENERAL VARIABLES
//count the types of all items
std::map <std::string, uint> typecount{ std::map <std::string, uint> typecount{
{"FILE", 0}, {"HARDLINK", 0}, {"SYMLINK", 0}, {"FILE", 0}, {"HARDLINK", 0}, {"SYMLINK", 0},
{"DIRECTORY", 0}, {"OTHER", 0} {"DIRECTORY", 0}, {"OTHER", 0}
}; // count the types of all items. };
uint64_t sizeof_allfiles{}; uint64_t sizeof_allfiles{}; // total size of all files in the archive
std::string helptext
{"usage: tarstats-pp [-h] [-j] [-f] tarfile.\n"
"A tool to calculate basics statistics on tarball. Shamelessly inspired by github.com/isotopp/tarstats!\n\n"
"mandatory argument:\n"
"tarfile a tarfile to calculate stats on\n\n"
"optional arguments\n"
"-h this helptext\n"
"-j stats in JSON format printed to stdout\n"
"-f print stats to file <tarfilename>.txt or .json if -j invoked"};
// Trivial check for arguments. Errorprone and has to be changed. // Trivial check for arguments. Errorprone and has to be changed.
if (argc < 2) { if (argc < 2) {
std::cout << "Please enter filename" << std::endl; std::cout << helptext << '\n';
return 9; return 9;
} }
// Getting name from argument lists on startup. Trivial and errorprone. Placeholder for now. // Getting name from argument lists on startup. Trivial and errorprone. Placeholder for now.
@@ -74,8 +84,10 @@ int main(int argc, char** argv) {
//Open tar File. //Open tar File.
std::ifstream file(archiveFilename, std::ios::binary); std::ifstream file(archiveFilename, std::ios::binary);
if(!file) if(!file) {
std::cout << "Error opening file" << std::endl; std::cout << "Error opening file" << std::endl;
std::cout << helptext << '\n';
}
// Tar spec is working with continous 512 byte size blocks. Header is 512 bytes. // Tar spec is working with continous 512 byte size blocks. Header is 512 bytes.
int buffersize = 512; int buffersize = 512;
@@ -109,10 +121,5 @@ int main(int argc, char** argv) {
std::cout << sizeof_allfiles << std::endl; std::cout << sizeof_allfiles << std::endl;
return 0; return 0;
} }