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utils.h

@@ -0,0 +1,105 @@
+#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());
+   }
+
+
+
+}
+#endif