68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
#include "parameters_parser.hh"
|
|
|
|
namespace Kakoune
|
|
{
|
|
|
|
String generate_switches_doc(const SwitchMap& switches)
|
|
{
|
|
String res;
|
|
for (auto& sw : switches)
|
|
res += format(" -{} {}: {}\n", sw.key,
|
|
sw.value.takes_arg ? "<arg>" : "",
|
|
sw.value.description);
|
|
return res;
|
|
}
|
|
|
|
ParametersParser::ParametersParser(ParameterList params,
|
|
const ParameterDesc& desc)
|
|
: m_params(params),
|
|
m_desc(desc)
|
|
{
|
|
bool only_pos = desc.flags & ParameterDesc::Flags::SwitchesAsPositional;
|
|
for (size_t i = 0; i < params.size(); ++i)
|
|
{
|
|
if (not only_pos and params[i] == "--")
|
|
only_pos = true;
|
|
else if (not only_pos and params[i][0_byte] == '-')
|
|
{
|
|
auto it = m_desc.switches.find(params[i].substr(1_byte));
|
|
if (it == m_desc.switches.end())
|
|
throw unknown_option(params[i]);
|
|
|
|
if (it->value.takes_arg)
|
|
{
|
|
++i;
|
|
if (i == params.size() or params[i][0_byte] == '-')
|
|
throw missing_option_value(it->key);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (desc.flags & ParameterDesc::Flags::SwitchesOnlyAtStart)
|
|
only_pos = true;
|
|
m_positional_indices.push_back(i);
|
|
}
|
|
}
|
|
size_t count = m_positional_indices.size();
|
|
if (count > desc.max_positionals or count < desc.min_positionals)
|
|
throw wrong_argument_count();
|
|
}
|
|
|
|
Optional<StringView> ParametersParser::get_switch(StringView name) const
|
|
{
|
|
auto it = m_desc.switches.find(name);
|
|
kak_assert(it != m_desc.switches.end());
|
|
for (size_t i = 0; i < m_params.size(); ++i)
|
|
{
|
|
const auto& param = m_params[i];
|
|
if (param[0_byte] == '-' and param.substr(1_byte) == name)
|
|
return it->value.takes_arg ? m_params[i+1] : StringView{};
|
|
|
|
if (param == "--")
|
|
break;
|
|
}
|
|
return {};
|
|
}
|
|
|
|
}
|