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feat: Add for_each_section to MultiConfig #298

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Merged
steverough merged 1 commit into from
Sep 10, 2025
Merged

feat: Add for_each_section to MultiConfig #298

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19 changes: 17 additions & 2 deletions toolbox/util/Config.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -21,10 +21,12 @@
#include <toolbox/util/Utility.hpp>
#include <toolbox/util/String.hpp>

#include <algorithm>
#include <map>
#include <ranges>
#include <stdexcept>
#include <unordered_map>
#include <map>
#include <utility>

namespace toolbox {
inline namespace util {
Expand Down Expand Up @@ -246,10 +248,23 @@ class TOOLBOX_API MultiConfig {
return section(std::string{name});
}

template <typename F>
void for_each_section(F f) const
noexcept(noexcept(
f(std::declval<const MultiConfig::MapType::key_type&>(),
std::declval<const MultiConfig::MapType::mapped_type&>())
))
{
std::for_each(map_.begin(), map_.end(), [&f](const auto& kv) {
f(kv.first, kv.second);
});
}

private:
Config root_;
// Map of named sections.
std::map<std::string, Config> map_;
using MapType = std::map<std::string, Config>;
MapType map_;
};

} // namespace util
Expand Down
30 changes: 30 additions & 0 deletions toolbox/util/Config.ut.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -458,4 +458,34 @@ foo=101
BOOST_CHECK_EQUAL(foo_it == foo_rng.end(), true);
}

BOOST_AUTO_TEST_CASE(MultiConfig_for_each_section)
{
const string text{R"(
[First]
key_abc=value_abc

[Second]
key_xyz=value_xyz
)"};

std::map<std::string,util::Config> sections;

MultiConfig c;
istringstream is{text};
c.read(is);
c.for_each_section([&sections](const std::string& name, const util::Config& config) {
sections.emplace(name, config);
});
auto first{sections.find("First")};
auto second{sections.find("Second")};
if (first == sections.end()) {
BOOST_FAIL("Missing section 'First'");
}
if (second == sections.end()) {
BOOST_FAIL("Missing section 'Second'");
}
BOOST_CHECK_EQUAL(first->second.get<std::string_view>("key_abc"), "value_abc"sv);
BOOST_CHECK_EQUAL(second->second.get<std::string_view>("key_xyz"), "value_xyz"sv);
}

BOOST_AUTO_TEST_SUITE_END()