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pdf-npages.cc

#include <iostream>
#include <string.h>
#include <stdlib.h>

#include <qpdf/QPDF.hh>

static char const* whoami = 0;

void usage()
{
    std::cerr << "Usage: " << whoami << " filename" << std::endl
            << "Prints the number of pages in filename" << std::endl;
    exit(2);
}

int main(int argc, char* argv[])
{
    if ((whoami = strrchr(argv[0], '/')) == NULL)
    {
      whoami = argv[0];
    }
    else
    {
      ++whoami;
    }
    // For libtool's sake....
    if (strncmp(whoami, "lt-", 3) == 0)
    {
      whoami += 3;
    }

    if ((argc == 2) && (strcmp(argv[1], "--version") == 0))
    {
      std::cout << whoami << " version 1.3" << std::endl;
      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() << std::endl;
    }
    catch (std::exception& e)
    {
      std::cerr << whoami << ": " << e.what() << std::endl;
      exit(2);
    }

    return 0;
}

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