1 files changed, 54 insertions, 0 deletions
diff --git a/libs/litehtml/src/string_id.cpp b/libs/litehtml/src/string_id.cpp
new file mode 100644
index 0000000000..9f8390303e
--- /dev/null
+++ b/libs/litehtml/src/string_id.cpp
@@ -0,0 +1,54 @@
+#include "html.h"
+#include "string_id.h"
+#include <assert.h>
+
+#ifndef LITEHTML_NO_THREADS
+	#include <mutex>
+	static std::mutex mutex;
+	#define lock_guard std::lock_guard<std::mutex> lock(mutex)
+#else
+	#define lock_guard
+#endif
+
+namespace litehtml
+{
+
+static std::map<string, string_id> map;
+static std::vector<string> array;
+
+static int init()
+{
+	string_vector names;
+	split_string(initial_string_ids, names, ",");
+	for (auto& name : names)
+	{
+		trim(name);
+		assert(name[0] == '_' && name.back() == '_');
+		name = name.substr(1, name.size() - 2);				// _border_color_ -> border_color
+		std::replace(name.begin(), name.end(), '_', '-');	// border_color   -> border-color
+		_id(name);  // this will create association _border_color_ <-> "border-color"
+	}
+	return 0;
+}
+static int dummy = init();
+
+const string_id empty_id = _id("");
+const string_id star_id = _id("*");
+
+string_id _id(const string& str)
+{
+	lock_guard;
+	auto it = map.find(str);
+	if (it != map.end()) return it->second;
+	// else: str not found, add it to the array and the map
+	array.push_back(str);
+	return map[str] = (string_id)(array.size() - 1);
+}
+
+const string& _s(string_id id)
+{
+	lock_guard;
+	return array[id];
+}
+
+} // namespace litehtml
+\ No newline at end of file