Mod management rework, part 1

- Replaced CModInfo class with constant ModDescription class
- Simplified mod loading logic
- Extracted some functionality from ModHandler into separate classes for
future reuse by Launcher

lib/modding/ModDescription.cpp

@@ -0,0 +1,114 @@
+/*
+ * ModDescription.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 "ModDescription.h"
+
+#include "CModVersion.h"
+#include "ModVerificationInfo.h"
+
+#include "../json/JsonNode.h"
+
+VCMI_LIB_NAMESPACE_BEGIN
+
+ModDescription::ModDescription(const TModID & fullID, const JsonNode & config)
+	: identifier(fullID)
+	, config(std::make_unique<JsonNode>(config))
+	, dependencies(loadModList(config["depends"]))
+	, softDependencies(loadModList(config["softDepends"]))
+	, conflicts(loadModList(config["conflicts"]))
+{
+	if(getID() != "core")
+		dependencies.insert("core");
+}
+
+ModDescription::~ModDescription() = default;
+
+TModSet ModDescription::loadModList(const JsonNode & configNode) const
+{
+	TModSet result;
+	for(const auto & entry : configNode.Vector())
+		result.insert(boost::algorithm::to_lower_copy(entry.String()));
+	return result;
+}
+
+const TModID & ModDescription::getID() const
+{
+	return identifier;
+}
+
+TModID ModDescription::getParentID() const
+{
+	size_t dotPos = identifier.find_last_of('.');
+
+	if(dotPos == std::string::npos)
+		return {};
+
+	return identifier.substr(0, dotPos);
+}
+
+const TModSet & ModDescription::getDependencies() const
+{
+	return dependencies;
+}
+
+const TModSet & ModDescription::getSoftDependencies() const
+{
+	return softDependencies;
+}
+
+const TModSet & ModDescription::getConflicts() const
+{
+	return conflicts;
+}
+
+const std::string & ModDescription::getBaseLanguage() const
+{
+	static const std::string defaultLanguage = "english";
+
+	return getConfig()["language"].isString() ? getConfig()["language"].String() : defaultLanguage;
+}
+
+const std::string & ModDescription::getName() const
+{
+	return getConfig()["name"].String();
+}
+
+const JsonNode & ModDescription::getFilesystemConfig() const
+{
+	return getConfig()["filesystem"];
+}
+
+const JsonNode & ModDescription::getConfig() const
+{
+	return *config;
+}
+
+CModVersion ModDescription::getVersion() const
+{
+	return CModVersion::fromString(getConfig()["version"].String());
+}
+
+ModVerificationInfo ModDescription::getVerificationInfo() const
+{
+	ModVerificationInfo result;
+	result.name = getName();
+	result.version = getVersion();
+	result.impactsGameplay = affectsGameplay();
+	result.parent = getParentID();
+
+	return result;
+}
+
+bool ModDescription::affectsGameplay() const
+{
+	return false; // TODO
+}
+
+VCMI_LIB_NAMESPACE_END