Split massive CModHandler class/file into multiple parts:

- IdentifierStorage is now a separate handler in VLC
- Renamed ModHandler::Incompatibility exception to ModIncompatibility
- Extracted ModScope namespace from ModHandler
- Extracted ModUtilities namespace from ModHandler
- Split CModHandler.cpp on per-class basis
- Replaced some direct members with unique_ptr to reduce header includes

lib/modding/ModUtility.cpp

@@ -0,0 +1,77 @@
+/*
+ * CModHandler.cpp, part of VCMI engine
+ *
+ * Authors: listed in file AUTHORS in main folder
+ *
+ * License: GNU General Public License v2.0 or later
+ * Full text of license available in license.txt file, in main folder
+ *
+ */
+#include "StdInc.h"
+#include "ModUtility.h"
+
+#include <vstd/StringUtils.h>
+
+VCMI_LIB_NAMESPACE_BEGIN
+
+std::string ModUtility::normalizeIdentifier(const std::string & scope, const std::string & remoteScope, const std::string & identifier)
+{
+	auto p = vstd::splitStringToPair(identifier, ':');
+
+	if(p.first.empty())
+		p.first = scope;
+
+	if(p.first == remoteScope)
+		p.first.clear();
+
+	return p.first.empty() ? p.second : p.first + ":" + p.second;
+}
+
+void ModUtility::parseIdentifier(const std::string & fullIdentifier, std::string & scope, std::string & type, std::string & identifier)
+{
+	auto p = vstd::splitStringToPair(fullIdentifier, ':');
+
+	scope = p.first;
+
+	auto p2 = vstd::splitStringToPair(p.second, '.');
+
+	if(!p2.first.empty())
+	{
+		type = p2.first;
+		identifier = p2.second;
+	}
+	else
+	{
+		type = p.second;
+		identifier.clear();
+	}
+}
+
+std::string ModUtility::makeFullIdentifier(const std::string & scope, const std::string & type, const std::string & identifier)
+{
+	if(type.empty())
+		logGlobal->error("Full identifier (%s %s) requires type name", scope, identifier);
+
+	std::string actualScope = scope;
+	std::string actualName = identifier;
+
+	//ignore scope if identifier is scoped
+	auto scopeAndName = vstd::splitStringToPair(identifier, ':');
+
+	if(!scopeAndName.first.empty())
+	{
+		actualScope = scopeAndName.first;
+		actualName = scopeAndName.second;
+	}
+
+	if(actualScope.empty())
+	{
+		return actualName.empty() ? type : type + "." + actualName;
+	}
+	else
+	{
+		return actualName.empty() ? actualScope+ ":" + type : actualScope + ":" + type + "." + actualName;
+	}
+}
+
+VCMI_LIB_NAMESPACE_END