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authorAndrei Karas <akaras@inbox.ru>2011-01-02 01:48:38 +0200
committerAndrei Karas <akaras@inbox.ru>2011-01-02 02:41:24 +0200
commit3eeae12c498d1a4dbe969462d2ba841f77ee3ccb (patch)
treeff8eab35e732bc0749fc11677c8873a7b3a58704 /src/configuration.h
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Initial commit.
This code based on mana client http://www.gitorious.org/mana/mana and my private repository.
Diffstat (limited to 'src/configuration.h')
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+/*
+ * The Mana Client
+ * Copyright (C) 2004-2009 The Mana World Development Team
+ * Copyright (C) 2009-2010 The Mana Developers
+ *
+ * This file is part of The Mana Client.
+ *
+ * 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
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef CONFIGURATION_H
+#define CONFIGURATION_H
+
+#include "utils/stringutils.h"
+#include "defaults.h"
+
+#include <libxml/xmlwriter.h>
+
+#include <cassert>
+#include <list>
+#include <map>
+#include <string>
+
+class ConfigListener;
+class ConfigurationObject;
+
+/**
+ * Configuration list manager interface; responsible for
+ * serializing/deserializing configuration choices in containers.
+ *
+ * \param T Type of the container elements to serialise
+ * \param CONT Type of the container we (de)serialise
+ */
+template <class T, class CONT>
+class ConfigurationListManager
+{
+ public:
+ /**
+ * Writes a value into a configuration object
+ *
+ * \param value The value to write out
+ * \param obj The configuation object to write to
+ * \return obj, or otherwise NULL to indicate that this option should
+ * be skipped
+ */
+ virtual ConfigurationObject
+ *writeConfigItem(T value, ConfigurationObject *obj) = 0;
+
+ /**
+ * Reads a value from a configuration object
+ *
+ * \param obj The configuration object to read from
+ * \param container The container to insert the object to
+ */
+ virtual CONT readConfigItem(ConfigurationObject *obj,
+ CONT container) = 0;
+
+ virtual ~ConfigurationListManager() {}
+};
+
+/**
+ * Configuration object, mapping values to names and possibly containing
+ * lists of further configuration objects
+ *
+ * \ingroup CORE
+ */
+class ConfigurationObject
+{
+ friend class Configuration;
+
+ public:
+ virtual ~ConfigurationObject();
+
+ /**
+ * Sets an option using a string value.
+ *
+ * \param key Option identifier.
+ * \param value Value.
+ */
+ virtual void setValue(const std::string &key,
+ const std::string &value);
+
+ void deleteKey(const std::string &key);
+
+ /**
+ * Gets a value as string.
+ *
+ * \param key Option identifier.
+ * \param deflt Default option if not there or error.
+ */
+ std::string getValue(const std::string &key,
+ const std::string &deflt) const;
+
+ int getValue(const std::string &key, int deflt) const;
+
+ int getValueInt(const std::string &key, int deflt) const;
+
+ bool getValueBool(const std::string &key, bool deflt) const;
+
+ unsigned getValue(const std::string &key, unsigned deflt) const;
+
+ double getValue(const std::string &key, double deflt) const;
+
+ /**
+ * Re-sets all data in the configuration
+ */
+ virtual void clear();
+
+ /**
+ * Serialises a container into a list of configuration options
+ *
+ * \param IT Iterator type over CONT
+ * \param T Elements that IT iterates over
+ * \param CONT The associated container type
+ *
+ * \param name Name of the list the elements should be stored under
+ * \param begin Iterator start
+ * \param end Iterator end
+ * \param manager An object capable of serialising T items
+ */
+ template <class IT, class T, class CONT>
+ void setList(const std::string &name, IT begin, IT end,
+ ConfigurationListManager<T, CONT> *manager)
+ {
+ if (!manager)
+ return;
+
+ ConfigurationObject *nextobj = new ConfigurationObject;
+ deleteList(name);
+ ConfigurationList *list = &(mContainerOptions[name]);
+
+ for (IT it = begin; it != end; it++)
+ {
+ ConfigurationObject *wrobj
+ = manager->writeConfigItem(*it, nextobj);
+ if (wrobj)
+ { // wrote something
+ assert (wrobj == nextobj);
+ nextobj = new ConfigurationObject;
+ list->push_back(wrobj);
+ }
+ else
+ {
+ nextobj->clear(); // you never know...
+ }
+ }
+
+ delete nextobj;
+ nextobj = 0;
+ }
+
+ /**
+ * Serialises a container into a list of configuration options
+ *
+ * \param IT Iterator type over CONT
+ * \param T Elements that IT iterates over
+ * \param CONT The associated container type
+ *
+ * \param name Name of the list the elements should be read from under
+ * \param empty Initial (empty) container to write to
+ * \param manager An object capable of deserialising items into CONT
+ */
+ template<class T, class CONT>
+ CONT getList(const std::string &name, CONT empty,
+ ConfigurationListManager<T, CONT> *manager)
+ {
+ ConfigurationList *list = &(mContainerOptions[name]);
+ CONT container = empty;
+
+ for (ConfigurationList::const_iterator it = list->begin();
+ it != list->end(); it++)
+ {
+ container = manager->readConfigItem(*it, container);
+ }
+
+ return container;
+ }
+
+ protected:
+ virtual void initFromXML(xmlNodePtr node);
+ virtual void writeToXML(xmlTextWriterPtr writer);
+
+ void deleteList(const std::string &name);
+
+ typedef std::map<std::string, std::string> Options;
+ Options mOptions;
+
+ typedef std::list<ConfigurationObject *> ConfigurationList;
+ std::map<std::string, ConfigurationList> mContainerOptions;
+};
+
+/**
+ * Configuration handler for reading (and writing).
+ *
+ * \ingroup CORE
+ */
+class Configuration : public ConfigurationObject
+{
+ public:
+ ~Configuration();
+
+ /**
+ * Reads config file and parse all options into memory.
+ *
+ * @param filename path to config file
+ * @param useResManager Make use of the resource manager.
+ */
+ void init(const std::string &filename, bool useResManager = false);
+
+ /**
+ * Set the default values for each keys.
+ *
+ * @param defaultsData data used as defaults.
+ */
+ void setDefaultValues(DefaultsData *defaultsData);
+
+ /**
+ * Writes the current settings back to the config file.
+ */
+ void write();
+
+ /**
+ * Adds a listener to the listen list of the specified config option.
+ */
+ void addListener(const std::string &key, ConfigListener *listener);
+
+ /**
+ * Removes a listener from the listen list of the specified config
+ * option.
+ */
+ void removeListener(const std::string &key, ConfigListener *listener);
+
+ void setValue(const std::string &key, const std::string &value);
+
+ inline void setValue(const std::string &key, const char *value)
+ { setValue(key, std::string(value)); }
+
+ inline void setValue(const std::string &key, float value)
+ { setValue(key, toString(value)); }
+
+ inline void setValue(const std::string &key, double value)
+ { setValue(key, toString(value)); }
+
+ inline void setValue(const std::string &key, int value)
+ { setValue(key, toString(value)); }
+
+ inline void setValueInt(const std::string &key, int value)
+ { setValue(key, toString(value)); }
+
+ inline void setValue(const std::string &key, unsigned value)
+ { setValue(key, toString(value)); }
+
+ inline void setValue(const std::string &key, bool value)
+ { setValue(key, value ? "1" : "0"); }
+
+ const std::string getConfigPath() const
+ { return mConfigPath; }
+
+ /**
+ * returns a value corresponding to the given key.
+ * The default value returned in based on fallbacks registry.
+ * @see defaults.h
+ */
+ int getIntValue(const std::string &key) const;
+ float getFloatValue(const std::string &key) const;
+ std::string getStringValue(const std::string &key) const;
+ bool getBoolValue(const std::string &key) const;
+
+ private:
+ /**
+ * Clean up the default values member.
+ */
+ void cleanDefaults();
+
+ typedef std::list<ConfigListener*> Listeners;
+ typedef Listeners::iterator ListenerIterator;
+ typedef std::map<std::string, Listeners> ListenerMap;
+ typedef ListenerMap::iterator ListenerMapIterator;
+ ListenerMap mListenerMap;
+
+ std::string mConfigPath; /**< Location of config file */
+ DefaultsData *mDefaultsData; /**< Defaults of value
+ for a given key */
+};
+
+extern Configuration branding;
+extern Configuration config;
+extern Configuration serverConfig;
+extern Configuration paths;
+
+#endif