libfrif_io.cpp

Go to the documentation of this file.

/*
 * This software was developed at the National Institute of Standards and
 * Technology (NIST) by employees of the Federal Government in the course
 * of their official duties. Pursuant to title 17 Section 105 of the
 * United States Code, this software is not subject to copyright protection
 * and is in the public domain. NIST assumes no responsibility whatsoever for
 * its use by other parties, and makes no guarantees, expressed or implied,
 * about its quality, reliability, or any other characteristic.
 */
 
#include <frif/io.h>
 
FRIF::Candidate::Candidate(
    const std::string &identifier_,
    const EFS::FrictionRidgeGeneralizedPosition fgp_) :
    identifier{identifier_},
    fgp{fgp_}
{
 
}
 
auto
FRIF::Candidate::operator<=>(const FRIF::Candidate&)
    const = default;
 
bool
FRIF::Candidate::operator==(const FRIF::Candidate&)
    const = default;
 
std::size_t
FRIF::CandidateListKeyHash::operator()(
    const FRIF::Candidate &c)
    const
    noexcept
{
        /*
         * Keys are guaranteed to not contain spaces (per
         * FRIF::TemplateArchive), so combining a unique identifier
         * with a finger position delimited by a space results in a unique
         * string for that identifier + position combination.
         */
        return (std::hash<std::string>{}(c.identifier + ' ' +
            std::to_string(std::underlying_type_t<
            EFS::FrictionRidgeGeneralizedPosition>(c.fgp))));
}