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argparse: use replace raw char* strings with string views

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a dinosaur
2024-04-08 02:22:23 +10:00
parent d69eec8dcf
commit f9928df187
3 changed files with 12 additions and 11 deletions
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11
src/argparse.cpp
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@@ -23,7 +23,7 @@ void ArgParse::Options::ShowShortUsage(const std::string_view name, std::ostream
out << "Usage: " << name;
for (const auto& it : options)
{
if (it.argumentName)
if (!it.argumentName.empty())
{
// Option with argument
it.required
@@ -55,8 +55,8 @@ void ArgParse::Options::ShowHelpUsage(const std::string_view name, std::ostream&
out << ">" << std::endl;
// Determine the alignment width from the longest argument
auto paramLength = [](const Option& p) -> int { return p.argumentName
? static_cast<int>(std::strlen(p.argumentName) + 3)
auto paramLength = [](const Option& p) -> int { return !p.argumentName.empty()
? static_cast<int>(p.argumentName.length() + 3)
: 1; };
auto longestParam = std::max_element(options.begin(), options.end(),
[=](auto a, auto b) -> bool { return paramLength(a) < paramLength(b); });
@@ -67,7 +67,8 @@ void ArgParse::Options::ShowHelpUsage(const std::string_view name, std::ostream&
{
auto decorateArgument = [=] { return " <" + std::string(it.argumentName) + "> "; };
out << " -" << it.flag
<< std::left << std::setw(alignWidth) << std::setfill('-') << (it.argumentName ? decorateArgument() : " ")
<< std::left << std::setw(alignWidth) << std::setfill('-')
<< (!it.argumentName.empty() ? decorateArgument() : " ")
<< " " << it.helpString << std::endl;
}
out << std::flush;
@@ -99,7 +100,7 @@ ArgParse::ParseCtrl ArgParse::ParserState::Next(const std::string_view token)
const auto opt = getOption(flagChar);
if (opt.has_value())
{
bool expect = opt.value().get().argumentName != nullptr;
bool expect = !opt.value().get().argumentName.empty();
if (token.length() <= 2)
{
expectArg = expect;