add func to path manager. fix bitmap handler. add general bitmap handler getter

LibCmo/CK2/MgrImpls/CKPathManager.cpp

@@ -10,7 +10,7 @@ namespace LibCmo::CK2::MgrImpls {
 
 	CKPathManager::CKPathManager(CKContext* ctx) :
 		CKBaseManager(ctx, PATH_MANAGER_GUID, "Path Manager"),
-		m_TempFolder() {
+		m_TempFolder(), m_ExtraPathes() {
 		// preset for temp folder
 		// todo: add current CKContext pointer as the part of temp path.
 		// thus multiple CKContext can work.
@@ -21,8 +21,15 @@ namespace LibCmo::CK2::MgrImpls {
 	}
 	CKPathManager::~CKPathManager() {}
 
-	void CKPathManager::SetTempFolder(CKSTRING u8_temp) {
-		EncodingHelper::U8PathToStdPath(this->m_TempFolder, u8_temp);
+	bool CKPathManager::SetTempFolder(CKSTRING u8_temp) {
+		std::filesystem::path cache;
+		EncodingHelper::U8PathToStdPath(cache, u8_temp);
+		if (std::filesystem::is_directory(cache)) {
+			m_TempFolder = cache;
+			return true;
+		} else {
+			return false;
+		}
 	}
 
 	std::string CKPathManager::GetTempFolder() {
@@ -41,8 +48,49 @@ namespace LibCmo::CK2::MgrImpls {
 		return result;
 	}
 
+	bool CKPathManager::AddPath(CKSTRING u8path) {
+		if (u8path == nullptr) return;
+		std::filesystem::path newpath;
+		EncodingHelper::U8PathToStdPath(newpath, u8path);
+		if (std::filesystem::is_directory(newpath)) {
+			m_ExtraPathes.emplace_back(std::move(newpath));
+			return true;
+		} else {
+			return false;
+		}
+	}
+
+	void CKPathManager::ClearPath() {
+		m_ExtraPathes.clear();
+	}
+
 	bool CKPathManager::ResolveFileName(std::string& u8_filename) {
-		// todo: finish resolve file name
+		std::filesystem::path filepath;
+		EncodingHelper::U8PathToStdPath(filepath, u8_filename.c_str());
+
+		// if it is absolute path, return it directly
+		if (filepath.is_absolute()) {
+			return true;
+		}
+
+		// otherwise check it in extra path
+		for (const auto& extrapath : m_ExtraPathes) {
+			auto combinedpath = extrapath / filepath;
+			if (std::filesystem::is_regular_file(combinedpath)) {
+				// this is correct
+				EncodingHelper::StdPathToU8Path(u8_filename, combinedpath);
+				return true;
+			}
+		}
+
+		// test in temp folder
+		auto tempfile = m_TempFolder / filepath;
+		if (std::filesystem::is_regular_file(tempfile)) {
+			EncodingHelper::StdPathToU8Path(u8_filename, combinedpath);
+			return true;
+		}
+
+		// failed
 		return false;
 	}