1 files changed, 219 insertions, 0 deletions
diff --git a/libmultimc/include/library.h b/libmultimc/include/library.h
new file mode 100644
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+++ b/libmultimc/include/library.h
@@ -0,0 +1,219 @@
+/* Copyright 2013 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <QtCore>
+
+class Library;
+
+enum OpSys
+{
+	Os_Windows,
+	Os_Linux,
+	Os_OSX,
+	Os_Other
+};
+
+OpSys OpSys_fromString(QString);
+
+#ifdef Q_OS_MAC
+	#define currentSystem Os_OSX
+#endif
+
+#ifdef Q_OS_LINUX
+	#define currentSystem Os_Linux
+#endif
+
+#ifdef Q_OS_WIN32
+	#define currentSystem Os_Windows
+#endif
+
+#ifndef currentSystem
+	#define currentSystem Os_Other
+#endif
+
+
+enum RuleAction
+{
+	Allow,
+	Disallow,
+	Defer
+};
+
+RuleAction RuleAction_fromString(QString);
+
+class Rule
+{
+protected:
+	RuleAction m_result;
+	virtual bool applies(Library * parent) = 0;
+public:
+	Rule(RuleAction result)
+		:m_result(result) {}
+	virtual ~Rule(){};
+	RuleAction apply(Library * parent)
+	{
+		if(applies(parent))
+			return m_result;
+		else
+			return Defer;
+	};
+};
+
+class OsRule : public Rule
+{
+private:
+	// the OS
+	OpSys m_system;
+	// the OS version regexp
+	QString m_version_regexp;
+protected:
+	virtual bool applies ( Library* )
+	{
+		return (m_system == currentSystem);
+	}
+	OsRule(RuleAction result, OpSys system, QString version_regexp)
+		: Rule(result), m_system(system), m_version_regexp(version_regexp) {}
+public:
+	static QSharedPointer<OsRule> create(RuleAction result, OpSys system, QString version_regexp)
+	{
+		return QSharedPointer<OsRule> (new OsRule(result, system, version_regexp));
+	}
+};
+
+class ImplicitRule : public Rule
+{
+protected:
+	virtual bool applies ( Library* )
+	{
+		return true;
+	}
+	ImplicitRule(RuleAction result)
+		: Rule(result) {}
+public:
+	static QSharedPointer<ImplicitRule> create(RuleAction result)
+	{
+		return QSharedPointer<ImplicitRule> (new ImplicitRule(result));
+	}
+};
+
+class Library
+{
+private:
+	// basic values used internally (so far)
+	QString m_name;
+	QString m_base_url;
+	QList<QSharedPointer<Rule> > m_rules;
+	
+	// derived values used for real things
+	/// where to store the lib locally
+	QString m_storage_path;
+	/// where to download the lib from
+	QString m_download_path;
+	/// is this lib actuall active on the current OS?
+	bool m_is_active;
+	
+	// native lib?
+	bool m_is_native;
+	QMap<OpSys, QString> m_native_suffixes;
+public:
+	QStringList extract_excludes;
+	
+public:
+	/// finalize the library, processing the input values into derived values and state
+	void finalize()
+	{
+		QStringList parts = m_name.split(':');
+		QString relative = parts[0];
+		relative.replace('.','/');
+		relative += '/' + parts[1] + '/' + parts[2] + '/' + parts[1] + '-' + parts[2];
+		if(!m_is_native)
+			relative += ".jar";
+		else
+		{
+			if(m_native_suffixes.contains(currentSystem))
+			{
+				relative += "-" + m_native_suffixes[currentSystem] + ".jar";
+			}
+			else
+			{
+				// really, bad.
+				relative += ".jar";
+			}
+		}
+		m_storage_path = relative;
+		m_download_path = m_base_url + relative;
+		
+		if(m_rules.empty())
+		{
+			m_is_active = true;
+		}
+		else
+		{
+			RuleAction result = Disallow;
+			for(auto rule: m_rules)
+			{
+				RuleAction temp = rule->apply( this );
+				if(temp != Defer)
+					result = temp;
+			}
+			m_is_active = (result == Allow);
+		}
+		if(m_is_native)
+		{
+			m_is_active = m_is_active && m_native_suffixes.contains(currentSystem);
+		}
+	};
+	
+	Library(QString name)
+	{
+		m_is_native = false;
+		m_is_native = false;
+		m_name = name;
+		m_base_url = "https://s3.amazonaws.com/Minecraft.Download/libraries/";
+	}
+	
+	void setName(QString name)
+	{
+		m_name = name;
+	}
+	
+	void setBaseUrl(QString base_url)
+	{
+		m_base_url = base_url;
+	}
+	
+	void setIsNative()
+	{
+		m_is_native = true;
+	}
+	
+	void addNative(OpSys os, QString suffix)
+	{
+		m_is_native = true;
+		m_native_suffixes[os] = suffix;
+	}
+	
+	void setRules(QList<QSharedPointer<Rule> > rules)
+	{
+		m_rules = rules;
+	}
+
+	bool applies()
+	{
+		return m_is_active;
+	}
+};