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Updated help to print subcommands list

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This commit is contained in:
Pranav Srinivas Kumar 2022-09-20 20:09:42 -07:00
parent 2f2858a8a7
commit 6987a83ad5
1 changed files with 28 additions and 2 deletions
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30
include/argparse/argparse.hpp
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@ -1113,11 +1113,15 @@ public:
-> std::ostream & { -> std::ostream & {
stream.setf(std::ios_base::left); stream.setf(std::ios_base::left);
stream << "Usage: " << parser.m_program_name << " [options] "; stream << "Usage: " << parser.m_program_name << " [options] ";
std::size_t longest_arg_length = parser.get_length_of_longest_argument();
for (const auto &argument : parser.m_positional_arguments) { for (const auto &argument : parser.m_positional_arguments) {
stream << argument.m_names.front() << " "; stream << argument.m_names.front() << " ";
} }
if (!parser.m_subparser_map.empty()) {
stream << (parser.m_positional_arguments.empty() ? "" : " ")
<< "<command> [<args>]";
}
std::size_t longest_arg_length = parser.get_length_of_longest_argument();
stream << "\n\n"; stream << "\n\n";
if (!parser.m_description.empty()) { if (!parser.m_description.empty()) {
@ -1143,6 +1147,25 @@ public:
stream << argument; stream << argument;
} }
if (!parser.m_subparser_map.empty()) {
stream << (parser.m_positional_arguments.empty() ?
(parser.m_optional_arguments.empty() ? "" : "\n") :
"\n")
<< "Subcommands:\n";
stream << "{";
std::size_t i = 0;
for (const auto &[argument, unused] : parser.m_subparser_map) {
if (i == 0) {
stream << argument;
}
else {
stream << ", " << argument;
}
++i;
}
stream << "}\n";
}
if (!parser.m_epilog.empty()) { if (!parser.m_epilog.empty()) {
stream << '\n'; stream << '\n';
stream << parser.m_epilog << "\n\n"; stream << parser.m_epilog << "\n\n";
@ -1243,6 +1266,9 @@ private:
for ([[maybe_unused]] const auto& [unused, argument] : m_argument_map) { for ([[maybe_unused]] const auto& [unused, argument] : m_argument_map) {
max_size = std::max(max_size, argument->get_arguments_length()); max_size = std::max(max_size, argument->get_arguments_length());
} }
for ([[maybe_unused]] const auto& [command, unused] : m_subparser_map) {
max_size = std::max(max_size, command.size());
}
return max_size; return max_size;
} }