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

/*

  Abstract : ExifData assignment and copy construction unit tests

  File     : exifdata-test.cpp

  Author(s): Andreas Huggel (ahu) <ahuggel@gmx.net>

  History  : 20-Feb-05, ahu: created

 */

// *****************************************************************************

// included header files

#include <exiv2/exiv2.hpp>

#include <iostream>

#include <iomanip>

#include <string>

#include <cassert>

void write(const std::string& file, Exiv2::ExifData& ed);

void print(const std::string& file);

// *****************************************************************************

// Main

int main(int argc, char* const argv[])

{

try {

    if (argc != 2) {

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

        return 1;

    }

    std::string file(argv[1]);

    Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(file);

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

    image->readMetadata();

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

    if (ed.empty()) {

        std::string error = file + ": No Exif data found in the file";

        throw Exiv2::Error(Exiv2::kerErrorMessage, error);

    }

    std::cout << "Copy construction, non-intrusive changes\n";

    Exiv2::ExifData ed1(ed);

    ed1["Exif.Image.DateTime"] = "Sunday, 11am";

    ed1["Exif.Image.Orientation"] = uint16_t(2);

    ed1["Exif.Photo.DateTimeOriginal"] = "Sunday, 11am";

    ed1["Exif.Photo.MeteringMode"] = uint16_t(1);

    ed1["Exif.Iop.InteroperabilityIndex"] = "123";

//    ed1["Exif.Thumbnail.Orientation"] = uint16_t(2);

    write(file, ed1);

    print(file);

    std::cout << "----------------------------------------------\n";

    std::cout << "Copy construction, intrusive changes\n";

    Exiv2::ExifData ed2(ed);

    ed2["Exif.Image.DateTime"] = "Sunday, 11am and ten minutes";

    ed2["Exif.Image.Orientation"] = "2 3 4 5";

    ed2["Exif.Photo.DateTimeOriginal"] = "Sunday, 11am and ten minutes";

    ed2["Exif.Photo.MeteringMode"] = "1 2 3 4 5 6";

    ed2["Exif.Iop.InteroperabilityIndex"] = "1234";

    ed2["Exif.Thumbnail.Orientation"] = "2 3 4 5 6";

    write(file, ed2);

    print(file);

    std::cout << "----------------------------------------------\n";

    std::cout << "Assignment, non-intrusive changes\n";

    Exiv2::ExifData ed3;

    ed3["Exif.Iop.InteroperabilityVersion"] = "Test 6 Iop tag";

    ed3["Exif.Thumbnail.Artist"] = "Test 6 Ifd1 tag";

    ed3 = ed;

    ed3["Exif.Image.DateTime"] = "Sunday, 11am";

    ed3["Exif.Image.Orientation"] = uint16_t(2);

    ed3["Exif.Photo.DateTimeOriginal"] = "Sunday, 11am";

    ed3["Exif.Photo.MeteringMode"] = uint16_t(1);

    ed3["Exif.Iop.InteroperabilityIndex"] = "123";

    ed3["Exif.Thumbnail.Orientation"] = uint16_t(2);

    write(file, ed3);

    print(file);

    std::cout << "----------------------------------------------\n";

    std::cout << "Assignment, intrusive changes\n";

    Exiv2::ExifData ed4;

    ed4["Exif.Iop.InteroperabilityVersion"] = "Test 6 Iop tag";

    ed4["Exif.Thumbnail.Artist"] = "Test 6 Ifd1 tag";

    ed4 = ed;

    ed4["Exif.Image.DateTime"] = "Sunday, 11am and ten minutes";

    ed4["Exif.Image.Orientation"] = "2 3 4 5";

    ed4["Exif.Photo.DateTimeOriginal"] = "Sunday, 11am and ten minutes";

    ed4["Exif.Photo.MeteringMode"] = uint16_t(1);

    ed4["Exif.Iop.InteroperabilityIndex"] = "123";

    ed4["Exif.Thumbnail.Orientation"] = uint16_t(2);

    write(file, ed4);

    print(file);

    return 0;

}

catch (Exiv2::AnyError& e) {

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

    return -1;

}

}

void write(const std::string& file, Exiv2::ExifData& ed)

{

    Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(file);

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

    image->setExifData(ed);

    image->writeMetadata();

}

void print(const std::string& file)

{

    Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(file);

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

    image->readMetadata();

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

    Exiv2::ExifData::const_iterator end = ed.end();

    for (Exiv2::ExifData::const_iterator i = ed.begin(); i != end; ++i) {

        std::cout << std::setw(45) << std::setfill(' ') << std::left

                  << i->key() << " "

                  << "0x" << std::setw(4) << std::setfill('0') << std::right

                  << std::hex << i->tag() << " "

                  << std::setw(12) << std::setfill(' ') << std::left

                  << i->ifdName() << " "

                  << std::setw(9) << std::setfill(' ') << std::left

                  << i->typeName() << " "

                  << std::dec << std::setw(3)

                  << std::setfill(' ') << std::right

                  << i->count() << " "

                  << std::dec << i->value()

                  << "\n";

    }

}