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// SPDX-License-Identifier: GPL-2.0-or-later
// ***************************************************************** -*- C++ -*-
// Test for large (>65535 bytes) IPTC buffer
// ***************************************************************** -*- C++ -*-
#include <exiv2/exiv2.hpp>
#include <iostream>
int main(int argc, char* const argv[]) {
try {
Exiv2::XmpParser::initialize();
::atexit(Exiv2::XmpParser::terminate);
if (argc != 3) {
std::cout << "Usage: " << argv[0] << " image datafile\n";
return EXIT_FAILURE;
}
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::ErrorCode::kerDataSourceOpenFailed, io.path(), Exiv2::strError());
}
Exiv2::DataBuf buf(io.size());
std::cout << "Reading " << buf.size() << " bytes from " << data << "\n";
const size_t readBytes = io.read(buf.data(), buf.size());
if (readBytes != buf.size() || io.error() || io.eof()) {
throw Exiv2::Error(Exiv2::ErrorCode::kerFailedToReadImageData);
}
// Read metadata from file
auto image = Exiv2::ImageFactory::open(file);
image->readMetadata();
// Set Preview field to the content of the data file
Exiv2::DataValue value;
value.read(buf.data(), 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(nullptr, 0, iptcData);
std::cout << "IRB buffer : " << irb.size() << "\n";
const Exiv2::byte* record;
uint32_t sizeHdr = 0;
uint32_t sizeData = 0;
Exiv2::Photoshop::locateIptcIrb(irb.data(), 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 != rawIptc.cmpBytes(0, record + sizeHdr, sizeData)) {
std::cout << "not ";
}
std::cout << "ok\n";
// Set Iptc data and write it to the file
image->writeMetadata();
return EXIT_SUCCESS;
} catch (Exiv2::Error& e) {
std::cout << "Caught Exiv2 exception '" << e << "'\n";
return EXIT_FAILURE;
}
}
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