// ***************************************************************** -*- C++ -*-

// easyaccess-test.cpp

// Sample program using high-level metadata access functions

// included header files

#include <exiv2/exiv2.hpp>

#include <iostream>

#include <iomanip>

#include <cassert>

typedef Exiv2::ExifData::const_iterator (*EasyAccessFct)(const Exiv2::ExifData& ed);

struct EasyAccess {

    const char*   label_;

    EasyAccessFct findFct_;

};

static const EasyAccess easyAccess[] = {

    { "Orientation",          Exiv2::orientation      },

    { "ISO speed",            Exiv2::isoSpeed         },

    { "Flash bias",           Exiv2::flashBias        },

    { "Exposure mode",        Exiv2::exposureMode     },

    { "Scene mode",           Exiv2::sceneMode        },

    { "Macro mode",           Exiv2::macroMode        },

    { "Image quality",        Exiv2::imageQuality     },

    { "White balance",        Exiv2::whiteBalance     },

    { "Lens name",            Exiv2::lensName         },

    { "Saturation",           Exiv2::saturation       },

    { "Sharpness",            Exiv2::sharpness        },

    { "Contrast",             Exiv2::contrast         },

    { "Scene capture type",   Exiv2::sceneCaptureType },

    { "Metering mode",        Exiv2::meteringMode     },

    { "Camera make",          Exiv2::make             },

    { "Camera model",         Exiv2::model            },

    { "Exposure time",        Exiv2::exposureTime     },

    { "FNumber",              Exiv2::fNumber          },

    { "Subject distance",     Exiv2::subjectDistance  },

    { "Camera serial number", Exiv2::serialNumber     },

    { "Focal length",         Exiv2::focalLength      },

    { "AF point",             Exiv2::afPoint          }

};

int main(int argc, char **argv)

try {

    Exiv2::XmpParser::initialize();

    ::atexit(Exiv2::XmpParser::terminate);

    if (argc != 2) {

        std::cout << "Usage: " << argv[0] << " file\n";

        return 1;

    }

    Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(argv[1]);

    assert (image.get() != 0);

    image->readMetadata();

    Exiv2::ExifData& ed = image->exifData();

    for (unsigned int i = 0; i < EXV_COUNTOF(easyAccess); ++i) {

        Exiv2::ExifData::const_iterator pos = easyAccess[i].findFct_(ed);

        std::cout << std::setw(20) << std::left << easyAccess[i].label_;

        if (pos != ed.end()) {

            std::cout << " (" << std::setw(35) << pos->key() << ") : "

                      << pos->print(&ed) << "\n";

        }

        else {

            std::cout << " (" << std::setw(35) << " " << ") : \n";

        }

    }

    return 0;

}

catch (Exiv2::AnyError& e) {

    std::cout << "Caught Exiv2 exception '" << e << "'\n";

    return -1;

}