/usr/include/bobcat/digestbuf is in libbobcat-dev 3.19.01-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36  | #ifndef INCLUDED_BOBCAT_DIGESTBUF_
#define INCLUDED_BOBCAT_DIGESTBUF_
#include <iosfwd>
#include <streambuf>
namespace FBB
{
struct DigestBufImp;
class DigestBuf: public std::streambuf
{
    friend std::ostream &operator<<(std::ostream &out, 
                                    DigestBuf const &digestbuf);
    DigestBufImp *d_pimpl;
    public:
        explicit DigestBuf(char const *type, size_t bufsize = 1024);
        virtual ~DigestBuf();
        void open();
        void close();
        std::string const &hash() const;
    private:
        virtual int overflow(int c);
};
std::ostream &operator<<(std::ostream &out, DigestBuf const &digestbuf);
}   // FBB
        
#endif
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