void go() override
{
const std::string comp_type = get_arg("type");
const size_t buf_size = get_arg_sz("buf-size");
const size_t comp_level = get_arg_sz("level");
std::unique_ptr<Botan::Compression_Algorithm> compress;
compress.reset(Botan::make_compressor(comp_type));
if(!compress)
{
throw CLI_Error_Unsupported("Compression", comp_type);
}
const std::string in_file = get_arg("file");
std::ifstream in(in_file, std::ios::binary);
if(!in.good())
{
throw CLI_IO_Error("reading", in_file);
}
const std::string out_file = output_filename(in_file, comp_type);
std::ofstream out(out_file, std::ios::binary);
if(!in.good())
{
throw CLI_IO_Error("writing", out_file);
}
Botan::secure_vector<uint8_t> buf;
compress->start(comp_level);
while(in.good())
{
buf.resize(buf_size);
in.read(reinterpret_cast<char*>(&buf[0]), buf.size());
buf.resize(in.gcount());
compress->update(buf);
out.write(reinterpret_cast<const char*>(&buf[0]), buf.size());
}
buf.clear();
compress->finish(buf);
out.write(reinterpret_cast<const char*>(&buf[0]), buf.size());
out.close();
}
void go() override
{
const size_t buf_size = get_arg_sz("buf-size");
const std::string in_file = get_arg("file");
std::string out_file, suffix;
parse_extension(in_file, out_file, suffix);
std::ifstream in(in_file, std::ios::binary);
if(!in.good())
{
throw CLI_IO_Error("reading", in_file);
}
std::unique_ptr<Botan::Decompression_Algorithm> decompress;
decompress.reset(Botan::make_decompressor(suffix));
if(!decompress)
{
throw CLI_Error_Unsupported("Decompression", suffix);
}
std::ofstream out(out_file, std::ios::binary);
if(!out.good())
{
throw CLI_IO_Error("writing", out_file);
}
Botan::secure_vector<uint8_t> buf;
decompress->start();
while(in.good())
{
buf.resize(buf_size);
in.read(reinterpret_cast<char*>(&buf[0]), buf.size());
buf.resize(in.gcount());
decompress->update(buf);
out.write(reinterpret_cast<const char*>(&buf[0]), buf.size());
}
buf.clear();
decompress->finish(buf);
out.write(reinterpret_cast<const char*>(&buf[0]), buf.size());
out.close();
}