1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
#include <seqan3/argument_parser/all.hpp>
#include <seqan3/core/debug_stream.hpp>
#include <seqan3/std/filesystem>
int main(int argc, const char ** argv)
{
seqan3::argument_parser myparser{"Test", argc, argv}; // initialize
//! [validator_call]
std::filesystem::path mydir{};
myparser.add_option(mydir, 'd', "dir", "The output directory for storing the files.",
seqan3::option_spec::DEFAULT, seqan3::output_directory_validator{});
//! [validator_call]
// an exception will be thrown if the user specifies a directory that cannot be created by the filesystem either
// because the parent path does not exists or the path has insufficient write permissions.
try
{
myparser.parse();
}
catch (seqan3::argument_parser_error const & ext) // the user did something wrong
{
std::cerr << "[PARSER ERROR] " << ext.what() << "\n"; // customize your error message
return -1;
}
seqan3::debug_stream << "directory given by user passed validation: " << mydir << "\n";
return 0;
}
|
