1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
// SPDX-License-Identifier: GPL-2.0-or-later
// Read an XMP packet from a file, parse and re-serialize it.
#include <exiv2/exiv2.hpp>
#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\n";
return EXIT_FAILURE;
}
std::string filename(argv[1]);
Exiv2::DataBuf buf = Exiv2::readFile(filename);
std::string xmpPacket;
xmpPacket.assign(buf.c_str(), buf.size());
std::cerr << "-----> Decoding XMP data read from " << filename << " <-----\n";
Exiv2::XmpData xmpData;
if (0 != Exiv2::XmpParser::decode(xmpData, xmpPacket)) {
std::string error(argv[1]);
error += ": Failed to parse file contents (XMP packet)";
throw Exiv2::Error(Exiv2::ErrorCode::kerErrorMessage, error);
}
if (xmpData.empty()) {
std::string error(argv[1]);
error += ": No XMP properties found in the XMP packet";
throw Exiv2::Error(Exiv2::ErrorCode::kerErrorMessage, error);
}
for (auto&& md : xmpData) {
std::cout << std::setfill(' ') << std::left << std::setw(44) << md.key() << " " << std::setw(9) << std::setfill(' ')
<< std::left << md.typeName() << " " << std::dec << std::setw(3) << std::setfill(' ') << std::right
<< md.count() << " " << std::dec << md.toString() << std::endl;
}
filename += "-new";
std::cerr << "-----> Encoding XMP data to write to " << filename << " <-----\n";
if (0 != Exiv2::XmpParser::encode(xmpPacket, xmpData)) {
std::string error(argv[1]);
error += ": Failed to encode the XMP data";
throw Exiv2::Error(Exiv2::ErrorCode::kerErrorMessage, error);
}
Exiv2::FileIo file(filename);
if (file.open("wb") != 0) {
throw Exiv2::Error(Exiv2::ErrorCode::kerFileOpenFailed, filename, "wb", Exiv2::strError());
}
if (file.write(reinterpret_cast<const Exiv2::byte*>(xmpPacket.data()), xmpPacket.size()) == 0) {
throw Exiv2::Error(Exiv2::ErrorCode::kerCallFailed, filename, Exiv2::strError(), "FileIo::write");
}
Exiv2::XmpParser::terminate();
return EXIT_SUCCESS;
} catch (Exiv2::Error& e) {
std::cout << "Caught Exiv2 exception '" << e << "'\n";
return EXIT_FAILURE;
}
|
