NOISSUE make new Mojang version format pass through MultiMC structures

Not yet used effectively, but it is read and written properly

logic/minecraft/Library.cpp

@@ -0,0 +1,130 @@
+#include "Library.h"
+#include <FileSystem.h>
+
+QStringList Library::files() const
+{
+	QStringList retval;
+	QString storage = storageSuffix();
+	if (storage.contains("${arch}"))
+	{
+		QString cooked_storage = storage;
+		cooked_storage.replace("${arch}", "32");
+		retval.append(cooked_storage);
+		cooked_storage = storage;
+		cooked_storage.replace("${arch}", "64");
+		retval.append(cooked_storage);
+	}
+	else
+		retval.append(storage);
+	return retval;
+}
+
+bool Library::filesExist(const QDir &base) const
+{
+	auto libFiles = files();
+	for(auto file: libFiles)
+	{
+		QFileInfo info(base, file);
+		qWarning() << info.absoluteFilePath() << "doesn't exist";
+		if (!info.exists())
+			return false;
+	}
+	return true;
+}
+
+QString Library::url() const
+{
+	if (!m_absolute_url.isEmpty())
+	{
+		return m_absolute_url;
+	}
+
+	if (m_base_url.isEmpty())
+	{
+		return QString("https://" + URLConstants::LIBRARY_BASE) + storageSuffix();
+	}
+
+	if(m_base_url.endsWith('/'))
+	{
+		return m_base_url + storageSuffix();
+	}
+	else
+	{
+		return m_base_url + QChar('/') + storageSuffix();
+	}
+}
+
+bool Library::isActive() const
+{
+	bool result = true;
+	if (m_rules.empty())
+	{
+		result = true;
+	}
+	else
+	{
+		RuleAction ruleResult = Disallow;
+		for (auto rule : m_rules)
+		{
+			RuleAction temp = rule->apply(this);
+			if (temp != Defer)
+				ruleResult = temp;
+		}
+		result = result && (ruleResult == Allow);
+	}
+	if (isNative())
+	{
+		result = result && m_native_classifiers.contains(currentSystem);
+	}
+	return result;
+}
+
+void Library::setStoragePrefix(QString prefix)
+{
+	m_storagePrefix = prefix;
+}
+
+QString Library::defaultStoragePrefix()
+{
+	return "libraries/";
+}
+
+QString Library::storagePrefix() const
+{
+	if(m_storagePrefix.isEmpty())
+	{
+		return defaultStoragePrefix();
+	}
+	return m_storagePrefix;
+}
+
+QString Library::storageSuffix() const
+{
+	// non-native? use only the gradle specifier
+	if (!isNative())
+	{
+		return m_name.toPath();
+	}
+
+	// otherwise native, override classifiers. Mojang HACK!
+	GradleSpecifier nativeSpec = m_name;
+	if (m_native_classifiers.contains(currentSystem))
+	{
+		nativeSpec.setClassifier(m_native_classifiers[currentSystem]);
+	}
+	else
+	{
+		nativeSpec.setClassifier("INVALID");
+	}
+	return nativeSpec.toPath();
+}
+
+QString Library::storagePath() const
+{
+	return FS::PathCombine(storagePrefix(), storageSuffix());
+}
+
+bool Library::storagePathIsDefault() const
+{
+	return m_storagePrefix.isEmpty();
+}