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#include "client/settings.hh"
namespace {
const std::string home_dir = getenv("HOME");
const char* const config_dir = "/.config/blockgame_linux/";
const char* const config_name = "blockgame_linux.conf";
} // namespace
namespace client {
namespace settings {
static std::string get_settings_file() {
std::filesystem::create_directories(home_dir + ::config_dir);
std::ifstream in{home_dir + ::config_dir + config_name,
std::fstream::in | std::fstream::app};
// this must end with a newline, IT IS NOT UP FOR NEGOTIATION
const std::string file{std::istreambuf_iterator<char>(in),
std::istreambuf_iterator<char>()};
return file.ends_with('\n') ? file : file + '\n';
}
static void set_settings_file(const std::string_view contents) {
std::filesystem::create_directories(home_dir + ::config_dir);
std::ofstream out{home_dir + ::config_dir + ::config_name,
std::fstream::out | std::fstream::trunc};
out << contents;
}
// Settings maps subkeys to std::string values (ie, "fov" -> "100.0"f).
// Heading maps setting to headings (ie, "camera -> {map with fov, 100.0f}).
using value_map = std::unordered_map<std::string, std::string>;
using setting_map = std::unordered_map<std::string, value_map>;
static setting_map& get_settings() {
static setting_map ret = []() -> setting_map {
setting_map settings{};
std::stringstream ss{get_settings_file()};
std::string heading = "default";
for (std::string line; std::getline(ss, line);) {
if (line.empty()) {
continue;
}
if (line.starts_with('[') && line.ends_with(']')) {
heading = std::string{std::begin(line) + 1, std::end(line) - 1};
continue;
}
const size_t split_pos = line.find_first_of(':');
if (split_pos == std::string::npos) {
shared::print::warn
<< "client: failed to parse line in settings file, "
"consider manual intervention\n";
continue;
}
const std::string key{std::begin(line),
std::begin(line) +
static_cast<long>(split_pos)};
const std::string value{std::begin(line) +
static_cast<long>(split_pos) + 1,
std::end(line)};
value_map& values = settings[heading];
values.emplace(key, value);
}
return settings;
}();
return ret;
}
std::optional<std::string> maybe_get_setting_str(const setting_pair_t& loc) {
const auto& [heading, name] = loc;
setting_map& settings = get_settings();
value_map& values = settings[heading];
const auto it = values.find(name);
if (it == std::end(values)) {
return std::nullopt;
}
return it->second;
}
std::string get_setting_str(const setting_pair_t& loc,
const std::string default_value) {
const auto& [heading, name] = loc;
setting_map& settings = get_settings();
value_map& values = settings[heading];
const auto find_it = values.find(name);
if (find_it == std::end(values)) {
values.emplace(name, default_value);
return default_value;
}
return find_it->second;
}
void set_setting_str(const setting_pair_t& loc, const std::string& value) {
const auto& [heading, name] = loc;
setting_map& settings = get_settings();
value_map& values = settings[heading];
const auto find_it = values.find(name);
if (find_it == std::end(values)) {
values.emplace(name, value);
return;
}
find_it->second = value;
}
void save() {
std::string contents;
const setting_map& settings = get_settings();
// We alphabetically order the headings, and the key:values between them.
std::vector<std::string> headings;
std::ranges::transform(std::begin(settings), std::end(settings),
std::back_inserter(headings),
[](const auto& map) { return map.first; });
std::ranges::sort(headings);
for (const auto& heading : headings) {
contents.append('[' + heading + "]\n");
const value_map& values = settings.find(heading)->second;
std::vector<std::string> keys;
std::ranges::transform(
std::begin(values), std::end(values), std::back_inserter(keys),
[](const auto& key_val) { return key_val.first; });
std::ranges::sort(keys);
for (const auto& key : keys) {
contents.append(key + ':' + values.find(key)->second + '\n');
}
}
set_settings_file(contents);
}
} // namespace settings
} // namespace client
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