Initial Commit

options.cpp

@@ -0,0 +1,63 @@
+
+#include "options.h"
+
+using namespace OptionLib;
+
+bool isValidKeyChar(char c) {
+	return (c >= 'a' && c <= 'z') ||
+		(c >= '0' && c <= '9') ||
+		(c == '_' || c == '-');
+}
+
+const std::string validateKey(const std::string &key) {
+	for (char c : key) {
+		if (!isValidKeyChar(c)) {
+			throw std::invalid_argument("Options key contains invalid characters, must match [a-z0-9\\_\\-]");
+		}
+	}
+	return key;
+}
+
+__OptionBase::__OptionBase(const std::string &key) : key(validateKey(key)) {}
+
+void OptionsBase::registerOption(__OptionBase* opt) {
+	options.push_back(opt);
+}
+
+const std::vector<__OptionBase*>& OptionsBase::getOptions() const {
+	return options;
+}
+
+void OptionsBase::store(const std::string& filename, std::string) {
+	std::ofstream file(filename);
+	if(!comment.empty()) {
+		file << "# " << comment << std::endl;
+	}
+	for (auto* opt : getOptions()) {
+		file << opt->key << "=";
+		opt->store(file);
+		file << std::endl;
+	}
+}
+
+void OptionsBase::read(const std::string& filename) {
+	std::ifstream file(filename);
+	std::unordered_map<std::string, std::string> kv;
+
+	std::string key, value, line;
+
+	while (std::getline(file, line)) {
+		if (line.size() < 1 || line[0] == '#') continue; // skip comment lines TODO make better
+		auto pos = line.find('=');
+		if (pos == std::string::npos) continue; // skip invalid lines
+		std::string key = line.substr(0, pos);
+		std::string value = line.substr(pos + 1);
+		kv[key] = value;
+	}
+
+	for (auto* opt : getOptions()) {
+		if (kv.count(opt->key)) {
+			opt->setFromString(kv[opt->key]);
+		}
+	}
+}