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/usr/include/bobcat/readlinestream is in libbobcat-dev 2.20.01-1.

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#ifndef INCLUDED_BOBCAT_READLINESTREAM_
#define INCLUDED_BOBCAT_READLINESTREAM_

#include <istream>
#include <bobcat/readlinebuf>

namespace FBB
{

class ReadLineStream: public HistoryExpansion, 
                      public std::istream
{
    ReadLineBuf &d_readLineBuf;

    public:
        explicit ReadLineStream(std::string const &prompt,
                                Type type = DONT_EXPAND_HISTORY);
        explicit ReadLineStream(std::string const &prompt, 
                                size_t historySize, 
                                Type type = DONT_EXPAND_HISTORY);

        void setPrompt(std::string const &prompt = "");
        bool setExpansion(Type type);

        Expansion expansion() const;
        std::string const &expansionError() const;

        bool useTimestamps(std::string (*timestamp)());
};

inline ReadLineStream::ReadLineStream(std::string const &prompt, Type type)
:
    std::istream(&ReadLineBuf::initialize(prompt, type)),
    d_readLineBuf(ReadLineBuf::instance())
{}

inline ReadLineStream::ReadLineStream(std::string const &prompt, 
                                      size_t historySize, Type type)
:
    std::istream(&ReadLineBuf::initialize(prompt, historySize, type)),
    d_readLineBuf(ReadLineBuf::instance())
{}

inline void ReadLineStream::setPrompt(std::string const &prompt)
{
    d_readLineBuf.setPrompt(prompt);
}

inline bool ReadLineStream::setExpansion(Type type)
{
    return d_readLineBuf.setExpansion(type);
}

inline ReadLineStream::Expansion ReadLineStream::expansion() const
{
    return d_readLineBuf.expansion();
}
        
inline std::string const &ReadLineStream::expansionError() const
{
    return d_readLineBuf.expansionError();
}

inline bool ReadLineStream::useTimestamps(std::string (*timestamp)())
{
    return d_readLineBuf.useTimestamps(timestamp);
}

} // FBB        
#endif