Let's make (git) history!

utils.h

@@ -0,0 +1,97 @@
+#ifndef UTILS_H
+#define UTILS_H
+#include <string>
+#include <string_view>
+#include <vector>
+#include <optional>
+#include <functional>
+#include <map>
+#include <regex>
+#include <ctime>
+namespace utils
+{
+
+std::vector<std::string> splitByChar(const std::string &str, char delim);
+std::vector<std::string> splitByString(const std::string &str, const std::string &delim);
+std::vector<std::string> splitByRegex(const std::string &str, const std::string &regex);
+std::string urldecode(std::string_view str);
+std::string strreplace(const std::string &str, const std::string &search, const std::string &replace);
+
+std::string html_xss(std::string_view str);
+std::string getenv(const std::string &key);
+
+template <class T, class U> bool hasKey(const std::map<T, U> &map, T key)
+{
+	auto k = map.find(key);
+	return k != map.end();
+}
+
+template <class T, class U> U getKeyOrEmpty(const std::map<T, U> &map, T key)
+{
+	auto k = map.find(key);
+	if(k != map.end())
+	{
+		return k->second;
+	}
+	return U();
+}
+
+template <class T, class U> U getKeyOrEmpty(std::multimap<T, U> map, T key)
+{
+	auto k = map.find(key);
+	if(k != map.end())
+	{
+		return k->second;
+	}
+	return U();
+}
+
+template <class T, class U> std::vector<U> getAll(std::multimap<T, U> map, T key)
+{
+	std::vector<U> result;
+	auto range = map.equal_range(key);
+	for(auto it = range.first; it != range.second; it++)
+	{
+		result.push_back(it->second);
+	}
+	return result;
+}
+
+std::string regex_callback_replacer(std::regex regex, const std::string &input,
+									std::function<std::string(std::smatch &)> callback);
+
+std::string readCompleteFile(std::string_view filepath);
+
+inline std::string nz(const char *s)
+{
+	if(s == nullptr)
+	{
+		return std::string{};
+	}
+	return std::string{s};
+}
+
+// TODO: optional
+inline unsigned int toUInt(const std::string &str)
+{
+	if(str == "")
+	{
+		return 0;
+	}
+	auto result = std::stoul(str);
+	if(result > std::numeric_limits<unsigned int>::max())
+	{
+		throw std::out_of_range(str + " is too large for unsigned int ");
+	}
+	return result;
+}
+
+std::string toISODate(time_t t);
+
+template <class T> inline std::string toString(const T &v)
+{
+	return std::string(v.begin(), v.end());
+}
+
+} // namespace utils
+#endif