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

// Test for large (>65535 bytes) IPTC buffer

#include <exiv2/exiv2.hpp>

#include <iostream>

#include <cassert>

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

try {

    if (argc != 3) {

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

        return 1;

    }

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

    std::string data(argv[2]);

    // Read data file into data buffer

    Exiv2::FileIo io(data);

    if (io.open() != 0) {

      throw Exiv2::Error(Exiv2::kerDataSourceOpenFailed, io.path(), Exiv2::strError());

    }

    Exiv2::DataBuf buf((long)io.size());

    std::cout << "Reading " << buf.size_ << " bytes from " << data << "\n";

    io.read(buf.pData_, buf.size_);

    if (io.error() || !io.eof()) throw Exiv2::Error(Exiv2::kerFailedToReadImageData);

    // Read metadata from file

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

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

    image->readMetadata();

    // Set Preview field to the content of the data file

    Exiv2::DataValue value;

    value.read(buf.pData_, buf.size_);

    Exiv2::IptcData& iptcData = image->iptcData();

    std::cout << "IPTC fields: " << iptcData.size() << "\n";

    iptcData["Iptc.Application2.Preview"] = value;

    std::cout << "IPTC fields: " << iptcData.size() << "\n";

    // Set IRB, compare with IPTC raw data

    Exiv2::DataBuf irb = Exiv2::Photoshop::setIptcIrb(0, 0, iptcData);

    std::cout << "IRB buffer : " << irb.size_ << "\n";

    const Exiv2::byte* record;

    uint32_t sizeHdr;

    uint32_t sizeData;

    Exiv2::Photoshop::locateIptcIrb(irb.pData_, irb.size_, &record, &sizeHdr, &sizeData);

    Exiv2::DataBuf rawIptc = Exiv2::IptcParser::encode(iptcData);

    std::cout << "Comparing IPTC and IRB size... ";

    if (static_cast<uint32_t>(rawIptc.size_) != sizeData) {

        std::cout << "not ";

    }

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

    std::cout << "Comparing IPTC and IRB data... ";

    if (0 != memcmp(rawIptc.pData_, record + sizeHdr, sizeData)) {

        std::cout << "not ";

    }

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

    // Set Iptc data and write it to the file

    image->writeMetadata();

    return 0;

}

catch (Exiv2::AnyError& e) {

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

    return -1;

}