new pack system

src/PackLib/PackManager.cpp

@@ -0,0 +1,40 @@
+#include "PackManager.h"
+
+bool CPackManager::AddPack(const std::string& path)
+{
+	std::shared_ptr<CPack> pack = std::make_shared<CPack>();
+	return pack->Open(path, m_entries);
+}
+
+bool CPackManager::GetFile(std::string_view path, TPackFile& result)
+{
+	thread_local std::string buf;
+	NormalizePath(path, buf);
+
+	auto it = m_entries.find(buf);
+	if (it != m_entries.end()) {
+		return it->second.first->GetFile(it->second.second, result);
+	}
+
+	return false;
+}
+
+bool CPackManager::IsExist(std::string_view path) const
+{
+	thread_local std::string buf;
+	NormalizePath(path, buf);
+
+	auto it = m_entries.find(buf);
+	return it != m_entries.end();
+}
+
+void CPackManager::NormalizePath(std::string_view in, std::string& out) const
+{
+	out.resize(in.size());
+	for (std::size_t i = 0; i < out.size(); ++i) {
+		if (in[i] == '\\')
+			out[i] = '/';
+		else
+			out[i] = static_cast<char>(std::tolower(in[i]));
+	}
+}