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// SPDX-License-Identifier: GPL-2.0-or-later
// First and very simple TIFF write test.
#include <enforce.hpp>
#include <exiv2/exiv2.hpp>
#include <iomanip>
#include <iostream>
#include <string>
using namespace Exiv2;
void print(const ExifData& exifData);
void mini1(const char* path);
void mini9(const char* path);
int main(int argc, char* const argv[]) {
try {
Exiv2::XmpParser::initialize();
::atexit(Exiv2::XmpParser::terminate);
if (argc != 2) {
std::cout << "Usage: " << argv[0] << " file\n";
return EXIT_FAILURE;
}
const char* path = argv[1];
mini1(path);
mini9(path);
return EXIT_SUCCESS;
} catch (const Error& e) {
std::cout << e << "\n";
return EXIT_FAILURE;
}
}
void mini1(const char* path) {
ExifData exifData;
Blob blob;
WriteMethod wm;
// Write nothing to a new structure, without a previous binary image
wm = ExifParser::encode(blob, nullptr, 0, bigEndian, exifData);
Internal::enforce(wm == wmIntrusive, Exiv2::ErrorCode::kerErrorMessage, "encode returned an unexpected value");
std::cout << "Test 1: Writing empty Exif data without original binary data: ok.\n";
// Write nothing, this time with a previous binary image
DataBuf buf = readFile(path);
wm = ExifParser::encode(blob, buf.c_data(), buf.size(), bigEndian, exifData);
Internal::enforce(wm == wmIntrusive, Exiv2::ErrorCode::kerErrorMessage, "encode returned an unexpected value");
std::cout << "Test 2: Writing empty Exif data with original binary data: ok.\n";
// Write something to a new structure, without a previous binary image
exifData["Exif.Photo.DateTimeOriginal"] = "Yesterday at noon";
wm = ExifParser::encode(blob, nullptr, 0, bigEndian, exifData);
Internal::enforce(wm == wmIntrusive, Exiv2::ErrorCode::kerErrorMessage, "encode returned an unexpected value");
std::cout << "Test 3: Wrote non-empty Exif data without original binary data:\n";
exifData.clear();
ByteOrder bo = ExifParser::decode(exifData, blob.data(), blob.size());
Internal::enforce(bo == bigEndian, Exiv2::ErrorCode::kerErrorMessage, "decode returned an unexpected value");
print(exifData);
}
void mini9(const char* path) {
TiffImage tiffImage(std::make_unique<FileIo>(path), false);
tiffImage.readMetadata();
std::cout << "MIME type: " << tiffImage.mimeType() << "\n";
std::cout << "Image size: " << tiffImage.pixelWidth() << " x " << tiffImage.pixelHeight() << "\n";
ExifData& exifData = tiffImage.exifData();
std::cout << "Before\n";
print(exifData);
std::cout << "======\n";
exifData["Exif.Photo.DateTimeOriginal"] = "Yesterday at noon";
std::cout << "After\n";
print(exifData);
tiffImage.writeMetadata();
}
void print(const ExifData& exifData) {
if (exifData.empty()) {
std::string error("No Exif data found in the file");
throw Exiv2::Error(ErrorCode::kerErrorMessage, error);
}
auto end = exifData.end();
for (auto i = exifData.begin(); i != end; ++i) {
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 << i->typeName() << " " << std::dec << std::setw(3) << std::setfill(' ')
<< std::right << i->count() << " " << std::dec << i->value() << "\n";
}
}
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