PropertySource.cpp

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 Technical University of Darmstadt.
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    or Technical University of Darmstadt, nor the names of its contributors may
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#include "PropertySource.h"
#include "PropertySink.h"

#include <fstream>

namespace Rcs
{

PropertySource::PropertySource()
{
    // nothing to do
}

PropertySource::~PropertySource()
{
    // nothing to do
}


class EmptyPropertySource : public PropertySource
{
public:
    virtual bool exists()
    {
        return false;
    }
    
    virtual bool getProperty(std::string& out, const char* property)
    {
        return false;
    }

    bool getProperty(std::vector<std::string> &out, const char *property) override {
        return false;
    }

    virtual bool getProperty(double& out, const char* property)
    {
        return false;
    }
    
    virtual bool getProperty(int& out, const char* property)
    {
        return false;
    }
    
    virtual bool getProperty(MatNd*& out, const char* property)
    {
        return false;
    }
    
    virtual bool getPropertyBool(const char* property, bool def = false)
    {
        return def;
    }
    
    virtual PropertySource* getChild(const char* prefix)
    {
        return empty();
    }
    
    virtual const std::vector<PropertySource*>& getChildList(const char* prefix)
    {
        static std::vector<PropertySource*> emptyList;
        return emptyList;
    }
    
    virtual PropertySource* clone() const
    {
        return empty();
    }
    
    virtual void saveXML(const char* fileName, const char* rootNodeName)
    {
        std::ofstream out;
        out.open(fileName);
        // no need to use libxml for writing an empty file
        out << "<?xml version=\"1.0\"?>" << std::endl;
        out << "<" << rootNodeName << " />" << std::endl;
    }
};


PropertySource* PropertySource::empty()
{
    static EmptyPropertySource emptySource;
    return &emptySource;
}

// These are just dummies, no extra file needed!

PropertySink::PropertySink()
{
    // Abstract base interface, it's empty!
}

PropertySink::~PropertySink()
{
    // Abstract base interface, it's empty!
}

} /* namespace Rcs */