pdf-npages.cc
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#include <cstdlib>
#include <cstring>
#include <iostream>
#include <qpdf/QPDF.hh>
#include <qpdf/QUtil.hh>
static char const* whoami = nullptr;
void
usage()
{
std::cerr << "Usage: " << whoami << " filename\n"
<< "Prints the number of pages in filename\n";
exit(2);
}
int
main(int argc, char* argv[])
{
whoami = QUtil::getWhoami(argv[0]);
if ((argc == 2) && (strcmp(argv[1], "--version") == 0)) {
std::cout << whoami << " version 1.3\n";
exit(0);
}
if (argc != 2) {
usage();
}
char const* filename = argv[1];
try {
QPDF pdf;
pdf.processFile(filename);
QPDFObjectHandle root = pdf.getRoot();
QPDFObjectHandle pages = root.getKey("/Pages");
QPDFObjectHandle count = pages.getKey("/Count");
std::cout << count.getIntValue() << '\n';
} catch (std::exception& e) {
std::cerr << whoami << ": " << e.what() << '\n';
exit(2);
}
return 0;
}