整理代码

util/Configuration.h

@@ -0,0 +1,140 @@
+#ifndef __CONFIG_CONFIGURATION_H__
+#define __CONFIG_CONFIGURATION_H__
+/*
+ *******************************************************************************
+ *                                   INCLUDE
+ *******************************************************************************
+ */
+#include <iostream>
+#include <map>
+#include <unordered_set>
+#include "Poco/Any.h"
+#include "Poco/Exception.h"
+#include "Poco/Format.h"
+
+
+namespace Util
+{
+/*
+ *******************************************************************************
+ *                                CLASS DECLARE
+ *******************************************************************************
+ */
+class Configuration
+{
+private:
+    class Parameter
+    {
+    public:
+        template <class T> T getValue()
+        {
+            return Poco::AnyCast<T>(_value);
+        }
+
+        void setValue(const Poco::Any& value)
+        {
+            this->_value = value;
+        }
+
+        void setChanged(bool changed)
+        {
+            this->_changed = changed;
+        }
+
+        bool getChanged()
+        {
+            return _changed;
+        }
+
+        bool empty()
+        {
+            return _value.empty();
+        }
+
+        Poco::Any& value()
+        {
+            return _value;
+        }
+
+    private:
+        Poco::Any _value;
+        bool      _changed;
+    };
+
+public:
+    class ParameterNames: public std::unordered_set<std::string>
+    {
+    public:
+        bool exists(std::string name) const;
+    };
+
+public:
+    virtual ~Configuration();
+
+    template <class T> Configuration& setParameter(const std::string& name, const T& value)
+    {
+        Parameter& parameter = _parameters[name];
+        if (parameter.empty() || parameter.getValue<T>() != value)
+        {
+            parameter.setChanged(true);
+            parameter.setValue(value);
+        }
+
+        return *this;
+    }
+
+    template <class T> T getParameter(const std::string& name)
+    {
+        return findParameter(name).getValue<T>();
+    }
+
+    bool isParameterChanged(const std::string& name)
+    {
+        return findParameter(name).getChanged();
+    }
+
+    void confirmParameterChanged(const std::string& name)
+    {
+        findParameter(name).setChanged(false);
+    }
+
+    void getChangedParameters(ParameterNames& names)
+    {
+        names.clear();
+        for (auto& p : _parameters)
+        {
+            if (p.second.getChanged())
+                names.insert(p.first);
+        }
+    }
+
+    const std::string& name() const
+    {
+        return _name;
+    }
+
+    void copyTo(Configuration& other);
+
+protected:
+    void setName(std::string& name)
+    {
+        _name = name;
+    }
+
+    Parameter& findParameter(const std::string& name)
+    {
+        if (_parameters.find(name) == _parameters.end())
+            throw Poco::NotFoundException(Poco::format("Can't find parameter: %s", name), -ENODATA);
+
+        return _parameters[name];
+    }
+
+private:
+    using Parameters = std::map<std::string, Parameter>;
+
+    Parameters  _parameters;
+    std::string _name;
+};
+
+}
+#endif