First render.

src/dawn/util/CMakeLists.txt

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+# Copyright (c) 2023 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    String.cpp
+)

src/dawn/util/String.cpp

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+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "String.hpp"
+
+using namespace Dawn;
+
+std::string String::toLowercase(const std::string &str) {
+  std::string result = str;
+  std::transform(result.begin(), result.end(), result.begin(), ::tolower);
+  return result;
+}
+
+bool_t String::includes(const std::string &str, const std::string &needle) {
+  return str.find(needle) != std::string::npos;
+}
+
+std::vector<std::string> String::split(
+  const std::string &s,
+  const std::string &delim
+) {
+  size_t posStart = 0, posEnd, delimLength = delim.length();
+  std::string token;
+  std::vector<std::string> res;
+
+  while((posEnd = s.find(delim, posStart)) != std::string::npos) {
+    token = s.substr(posStart, posEnd - posStart);
+    posStart = posEnd + delimLength;
+    res.push_back (token);
+  }
+
+  res.push_back(s.substr(posStart));
+  return res;
+}

src/dawn/util/String.hpp

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+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "dawnlibs.hpp"
+
+namespace Dawn {
+  class String {
+    public:
+      /**
+       * Converts the given string to lowercase.
+       * 
+       * @param str String to convert.
+       * @return The lowercase string.
+       */
+      static std::string toLowercase(const std::string &str);
+
+      /**
+       * Checks if the given string includes the given needle.
+       * 
+       * @param str String to check.
+       * @param needle String to check for.
+       * @return True if the string includes the needle.
+       */
+      static bool_t includes(const std::string &str, const std::string &needle);
+
+      /**
+       * Splits the given string by the given delimiter.
+       * 
+       * @param str String to split.
+       * @param delim Delimiter to split by.
+       * @return The split string.
+       */
+      static std::vector<std::string> split(
+        const std::string &str,
+        const std::string &delim
+      );
+  };
+}