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#include <qpdf/QPDFJob.hh>
#include <qpdf/QUtil.hh>
#include <iostream>
// This program is a simple demonstration of different ways to use the QPDFJob API.
static char const* whoami = nullptr;
static void
usage()
{
std::cerr << "Usage: " << whoami << std::endl
<< "This program linearizes the first page of in.pdf to out1.pdf, out2.pdf, and"
<< std::endl
<< " out3.pdf, each demonstrating a different way to use the QPDFJob API"
<< std::endl;
exit(2);
}
int
main(int argc, char* argv[])
{
whoami = QUtil::getWhoami(argv[0]);
if (argc != 1) {
usage();
}
// The examples below all catch std::exception. Note that QPDFUsage can be caught separately to
// report on errors in using the API itself. For CLI, this is command-line usage. For JSON or
// the API, it would be errors from the equivalent invocation.
// Note that staticId is used for testing only.
try {
// Use the config API
QPDFJob j;
j.config()
->inputFile("in.pdf")
->outputFile("out1.pdf")
->pages()
// Prior to qpdf 11.9.0, call ->pageSpec(file, range, password)
->file(".")
->range("1")
->endPages()
->linearize()
->staticId() // for testing only
->compressStreams("n") // avoid dependency on zlib output
->checkConfiguration();
j.run();
std::cout << "out1 status: " << j.getExitCode() << std::endl;
} catch (std::exception& e) {
std::cerr << "exception: " << e.what() << std::endl;
return 2;
}
try {
char const* new_argv[] = {
whoami,
"in.pdf",
"out2.pdf",
"--linearize",
"--pages",
".",
"1",
"--",
"--static-id",
"--compress-streams=n", // avoid dependency on zlib output
nullptr};
QPDFJob j;
j.initializeFromArgv(new_argv);
j.run();
std::cout << "out2 status: " << j.getExitCode() << std::endl;
} catch (std::exception& e) {
std::cerr << "exception: " << e.what() << std::endl;
return 2;
}
try {
// Use the JSON API
QPDFJob j;
j.initializeFromJson(R"({
"inputFile": "in.pdf",
"outputFile": "out3.pdf",
"staticId": "",
"linearize": "",
"compressStreams": "n",
"pages": [
{
"file": ".",
"range": "1"
}
]
}
)");
j.run();
std::cout << "out3 status: " << j.getExitCode() << std::endl;
} catch (std::exception& e) {
std::cerr << "exception: " << e.what() << std::endl;
return 2;
}
return 0;
}
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