75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
/*
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* Copyright (C) 2008 Patrick Ohly
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*/
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#ifndef INCL_EVOLUTION_FILTER_CONFIG_NODE
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# define INCL_EVOLUTION_FILTER_CONFIG_NODE
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#include <ConfigNode.h>
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#include <boost/shared_ptr.hpp>
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#include <boost/algorithm/string/case_conv.hpp>
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#include <boost/algorithm/string.hpp>
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#include "SyncEvolutionUtil.h"
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#include <map>
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#include <utility>
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#include <vector>
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#include <string>
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using namespace std;
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/**
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* This class acts as filter between a real config node and its user:
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* reads which match properties which are set in the filter will
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* return the value set in the filter. Writes will go to the underlying
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* node and future reads will return the written value.
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*
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* The purpose of this class is temporarily overriding saved values
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* during one run without having to modify the saved values.
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*/
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class FilterConfigNode : public ConfigNode {
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public:
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/** a case-insensitive string to string mapping */
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class ConfigFilter : public map<string, string, Nocase<string> > {
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public:
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/** format as <key> = <value> lines */
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operator string () const;
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};
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/** read-write access to underlying node */
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FilterConfigNode(const boost::shared_ptr<ConfigNode> &node,
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const ConfigFilter &filter = ConfigFilter());
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/** read-only access to underlying node */
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FilterConfigNode(const boost::shared_ptr<const ConfigNode> &node,
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const ConfigFilter &filter = ConfigFilter());
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virtual string getName() const { return m_readOnlyNode->getName(); }
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/** add another entry to the list of filter properties */
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void addFilter(const string &property,
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const string &value);
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/** replace current filter list with new one */
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void setFilter(const ConfigFilter &filter);
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const ConfigFilter &getFilter() const { return m_filter; }
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/* ConfigNode API */
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virtual void flush();
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virtual string readProperty(const string &property) const;
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virtual void setProperty(const string &property,
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const string &value,
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const string &comment = "",
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const string *defValue = NULL);
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virtual void readProperties(map<string, string> &props) const;
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virtual void removeProperty(const string &property);
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virtual bool exists() const { return m_readOnlyNode->exists(); }
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private:
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ConfigFilter m_filter;
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boost::shared_ptr<ConfigNode> m_node;
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boost::shared_ptr<const ConfigNode> m_readOnlyNode;
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};
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#endif
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