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qpdf/examples/qpdfjob-save-attachment.cc
2022-06-19 08:46:58 -04:00

52 lines
1.4 KiB
C++

#include <qpdf/Pl_StdioFile.hh>
#include <qpdf/QPDFJob.hh>
#include <qpdf/QPDFLogger.hh>
#include <qpdf/QUtil.hh>
// This example demonstrates how we can redirect where saved output
// goes by calling the default logger's setSave method before running
// something with QPDFJob. See qpdfjob-c-save-attachment.c for an
// implementation that uses the C API.
int
main(int argc, char* argv[])
{
auto whoami = QUtil::getWhoami(argv[0]);
if (argc != 4) {
std::cerr << "Usage: " << whoami << " file attachment-key outfile"
<< std::endl;
exit(2);
}
char const* filename = argv[1];
char const* key = argv[2];
char const* outfilename = argv[3];
std::string attachment_arg = "--show-attachment=";
attachment_arg += key;
char const* j_argv[] = {
whoami,
filename,
attachment_arg.c_str(),
"--",
nullptr,
};
QUtil::FileCloser fc(QUtil::safe_fopen(outfilename, "wb"));
auto save = std::make_shared<Pl_StdioFile>("capture", fc.f);
QPDFLogger::defaultLogger()->setSave(save, false);
try {
QPDFJob j;
j.initializeFromArgv(j_argv);
j.run();
} catch (std::exception& e) {
std::cerr << whoami << ": " << e.what() << std::endl;
exit(2);
}
std::cout << whoami << ": wrote attachment to " << outfilename << std::endl;
return 0;
}