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// SPDX-License-Identifier: GPL-2.0-or-later
// Tester application for testing remote i/o.
// It makes some modifications on the metadata of remote file, reads new metadata from that file
// and reset the metadata back to the original status.
#include <exiv2/exiv2.hpp>
#include <iomanip>
#include <iostream>
int main(int argc, char* const argv[]) {
try {
Exiv2::XmpParser::initialize();
::atexit(Exiv2::XmpParser::terminate);
if (argc < 2) {
std::cout << "Usage: " << argv[0] << " file {--nocurl | --curl}\n\n";
return EXIT_FAILURE;
}
bool useCurlFromExiv2TestApps = true;
for (int a = 1; a < argc; a++) {
std::string arg(argv[a]);
if (arg == "--nocurl")
useCurlFromExiv2TestApps = false;
else if (arg == "--curl")
useCurlFromExiv2TestApps = true;
}
std::string file(argv[1]);
// set/add metadata
std::cout << "Modify the metadata ...\n";
Exiv2::ExifData exifData;
exifData["Exif.Photo.UserComment"] = "Hello World"; // AsciiValue
exifData["Exif.Image.Software"] = "Exiv2"; // AsciiValue
exifData["Exif.Image.Copyright"] = "Exiv2"; // AsciiValue
exifData["Exif.Image.Make"] = "Canon"; // AsciiValue
exifData["Exif.Canon.OwnerName"] = "Tuan"; // UShortValue
exifData["Exif.CanonCs.LensType"] = static_cast<uint16_t>(65535); // LongValue
Exiv2::Value::UniquePtr v = Exiv2::Value::create(Exiv2::asciiString);
v->read("2013:06:09 14:30:30");
Exiv2::ExifKey key("Exif.Image.DateTime");
exifData.add(key, v.get());
auto writeTest = Exiv2::ImageFactory::open(file, useCurlFromExiv2TestApps);
writeTest->setExifData(exifData);
writeTest->writeMetadata();
// read the result to make sure everything fine
std::cout << "Print out the new metadata ...\n";
auto readTest = Exiv2::ImageFactory::open(file, useCurlFromExiv2TestApps);
readTest->readMetadata();
Exiv2::ExifData& exifReadData = readTest->exifData();
if (exifReadData.empty()) {
std::string error(argv[1]);
error += ": No Exif data found in the file";
throw Exiv2::Error(Exiv2::ErrorCode::kerErrorMessage, error);
}
auto end = exifReadData.end();
for (auto i = exifReadData.begin(); i != end; ++i) {
const char* tn = i->typeName();
std::cout << std::setw(44) << std::setfill(' ') << std::left << i->key() << " "
<< "0x" << std::setw(4) << std::setfill('0') << std::right << std::hex << i->tag() << " "
<< std::setw(9) << std::setfill(' ') << std::left << (tn ? tn : "Unknown") << " " << std::dec
<< std::setw(3) << std::setfill(' ') << std::right << i->count() << " " << std::dec << i->value()
<< "\n";
}
// del, reset the metadata
std::cout << "Reset ...\n";
exifReadData["Exif.Photo.UserComment"] = "Have a nice day"; // AsciiValue
exifReadData["Exif.Image.Software"] = "Exiv2.org"; // AsciiValue
exifReadData["Exif.Image.Copyright"] = "Exiv2.org"; // AsciiValue
key = Exiv2::ExifKey("Exif.Image.Make");
auto pos = exifReadData.findKey(key);
if (pos == exifReadData.end())
throw Exiv2::Error(Exiv2::ErrorCode::kerErrorMessage, "Exif.Image.Make not found");
exifReadData.erase(pos);
key = Exiv2::ExifKey("Exif.Image.DateTime");
pos = exifReadData.findKey(key);
if (pos == exifReadData.end())
throw Exiv2::Error(Exiv2::ErrorCode::kerErrorMessage, "Exif.Image.DateTime not found");
exifReadData.erase(pos);
key = Exiv2::ExifKey("Exif.Canon.OwnerName");
pos = exifReadData.findKey(key);
if (pos == exifReadData.end())
throw Exiv2::Error(Exiv2::ErrorCode::kerErrorMessage, "Exif.Canon.OwnerName not found");
exifReadData.erase(pos);
key = Exiv2::ExifKey("Exif.CanonCs.LensType");
pos = exifReadData.findKey(key);
if (pos == exifReadData.end())
throw Exiv2::Error(Exiv2::ErrorCode::kerErrorMessage, "Exif.CanonCs.LensType not found");
exifReadData.erase(pos);
readTest->setExifData(exifReadData);
readTest->writeMetadata();
return EXIT_SUCCESS;
} catch (Exiv2::Error& e) {
std::cout << "Caught Exiv2 exception '" << e << "'\n";
return EXIT_FAILURE;
}
}
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