new config manager. not everything is completed, and some things will still be changed, but it seems to work well enough to put it into CVS

svn-id: r10687

1 files changed, 127 insertions, 0 deletions

diff --git a/common/config-manager.h b/common/config-manager.h
new file mode 100644
index 0000000000..d4d368e761
--- /dev/null
+++ b/common/config-manager.h
@@ -0,0 +1,127 @@
+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2001  Ludvig Strigeus
+ * Copyright (C) 2001-2003 The ScummVM project
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * $Header$
+ *
+ */
+
+#ifndef COMMON_CONFIG_H
+#define COMMON_CONFIG_H
+
+#include "common/list.h"
+#include "common/map.h"
+#include "common/singleton.h"
+#include "common/str.h"
+#include "common/util.h"
+
+namespace Common {
+
+class File;
+
+
+/**
+ * The (singleton) configuration manager, used to query & set configuration
+ * values using string keys.
+ *
+ * @todo Implement the callback based notification system (outline below)
+ *       which sends out notifications to interested parties whenever the value
+ *       of some specific (or any) configuration key changes.
+ */
+class ConfigManager : public Singleton<ConfigManager> {
+public:
+	class Domain : public StringMap {
+//		friend class ConfigManager;
+	public:
+		const String &get(const String &key) const {
+			Node *node = findNode(_root, key);
+			return node ? node->_value : String::emptyString;
+		}
+/*
+		void	set(const String &key, const String &value);
+		void	set(const String &key, int value);
+		void	set(const String &key, bool value);
+*/
+	};
+
+	typedef Map<String, Domain> DomainMap;
+	
+	/** The name of the application domain (normally 'scummvm'). */
+	static const String kApplicationDomain;
+
+	bool				hasKey(const String &key) const;
+	bool				hasKey(const String &key, const String &dom) const;
+
+	const String &		get(const String &key) const;
+	const String &		get(const String &key, const String &dom) const;
+	int					getInt(const String &key, const String &dom = String::emptyString) const;
+	bool				getBool(const String &key, const String &dom = String::emptyString) const;
+
+	void				set(const String &key, const String &value);
+	void				set(const String &key, const String &value, const String &dom);
+	void				set(const String &key, const char *value, const String &dom = String::emptyString);
+	void				set(const String &key, int value, const String &dom = String::emptyString);
+	void				set(const String &key, bool value, const String &dom = String::emptyString);
+
+	void				registerDefault(const String &key, const String &value);
+	void				registerDefault(const String &key, const char *value);
+	void				registerDefault(const String &key, int value);
+	void				registerDefault(const String &key, bool value);
+//	...
+
+	void				flushToDisk();
+
+	void				setActiveDomain(const String &domain);
+
+//	void				addDomain(const String &name);
+	void				removeGameDomain(const String &name);
+	void				renameGameDomain(const String &oldName, const String &newName);
+	bool				hasGameDomain(const String &domain) const;
+	const DomainMap &	getGameDomains() const { return _gameDomains; }
+
+/*
+	TODO: Callback/change notification system
+	typedef void (*ConfigCallback)(const ConstString &key, void *refCon);
+
+	void   registerCallback(const ConstString &key, ConfigCallback cfgc, void *refCon)
+	void unregisterCallback(const ConstString &key, ConfigCallback cfgc)
+*/
+
+private:
+	friend class Singleton<ConfigManager>;
+	ConfigManager();
+
+	void			loadFile(const String &filename);
+	void			writeDomain(FILE *file, const String &name, const Domain &domain);
+	
+//	Domain			_runtimeDomain;
+	DomainMap		_gameDomains;
+	DomainMap		_globalDomains;
+	Domain			_defaultsDomain;
+	
+	List<Domain *>	_searchOrder;
+
+	String			_activeDomain;
+	String			_filename;
+};
+
+}	// End of namespace Common
+
+/** Shortcut for accessing the configuration manager. */
+#define ConfMan		Common::ConfigManager::instance()
+
+#endif