1 files changed, 46 insertions, 0 deletions
diff --git a/libs/uibase/src/strings.cpp b/libs/uibase/src/strings.cpp
new file mode 100644
index 0000000..11087f4
--- /dev/null
+++ b/libs/uibase/src/strings.cpp
@@ -0,0 +1,46 @@
+#include <uibase/strings.h>
+
+#include <algorithm>
+#include <locale>
+
+namespace MOBase
+{
+
+// this is strongly inspired from boost
+class is_iequal
+{
+  std::locale m_loc;
+
+public:
+  is_iequal(const std::locale& loc = std::locale()) : m_loc{loc} {}
+
+  template <typename T1, typename T2>
+  bool operator()(const T1& Arg1, const T2& Arg2) const
+  {
+    return std::toupper<T1>(Arg1, m_loc) == std::toupper<T2>(Arg2, m_loc);
+  }
+};
+
+bool iequals(std::string_view lhs, std::string_view rhs)
+{
+  return std::equal(lhs.begin(), lhs.end(), rhs.begin(), rhs.end(), is_iequal());
+}
+
+void ireplace_all(std::string& input, std::string_view search,
+                  std::string_view replace) noexcept
+{
+  const auto search_length  = static_cast<std::string::difference_type>(search.size());
+  const auto replace_length = replace.size();
+
+  std::size_t i = 0;
+  while (input.size() - i >= search_length) {
+    if (iequals(std::string_view(input).substr(i, search_length), search)) {
+      input.replace(i, search_length, replace);
+      i += replace_length;
+    } else {
+      ++i;
+    }
+  }
+}
+
+}  // namespace MOBase