Big refactor, shuffling a lot of files around

src/util/string_.cpp

@@ -0,0 +1,38 @@
+#include "string_.h"
+
+#include <algorithm>
+
+namespace anm2ed::util::string
+{
+  std::string to_lower(const std::string& string)
+  {
+    std::string transformed = string;
+    std::ranges::transform(transformed, transformed.begin(), [](const unsigned char c) { return std::tolower(c); });
+    return transformed;
+  }
+
+  std::string backslash_replace(const std::string& string)
+  {
+    std::string transformed = string;
+    for (char& character : transformed)
+      if (character == '\\') character = '/';
+    return transformed;
+  }
+
+  std::string backslash_replace_to_lower(const std::string& string)
+  {
+    std::string transformed = string;
+    transformed = backslash_replace(transformed);
+    return to_lower(transformed);
+  }
+
+  std::string quote(const std::string& string)
+  {
+    return "\"" + string + "\"";
+  }
+
+  bool to_bool(const std::string& string)
+  {
+    return to_lower(string) == "true";
+  }
+}