qpdf/qpdf/test_xref.cc

#include <qpdf/QPDF.hh>
#include <qpdf/QPDFObjGen.hh>
#include <qpdf/QPDFXRefEntry.hh>

#include <iostream>
#include <map>
#include <string>
#include <cstdlib>

int main(int argc, char *argv[])
{
    if (argc != 2)
    {
        std::cerr << "usage: test_xref INPUT.pdf" << std::endl;
        std::exit(2);
    }

    try
    {
        QPDF qpdf;
        qpdf.processFile(argv[1]);

        std::map<QPDFObjGen, QPDFXRefEntry> xref
            = qpdf.getXRefTable();

        for (std::map<QPDFObjGen, QPDFXRefEntry>::iterator iter = xref.begin();
             iter != xref.end(); ++iter)
        {
            std::cout
                << iter->first.getObj() << "/" << iter->first.getGen()
                << ", ";
            switch (iter->second.getType())
            {
              case 0:
                std::cout
                    << "free entry"
                    << std::endl;
                break;
              case 1:
                std::cout
                    << "uncompressed, offset = "
                    << iter->second.getOffset()
                    << " (0x"
                    << std::hex << iter->second.getOffset() << std::dec
                    << ")"
                    << std::endl;
                break;
              case 2:
                std::cout
                    << "compressed, stream number = "
                    << iter->second.getObjStreamNumber()
                    << ", stream index = "
                    << iter->second.getObjStreamIndex()
                    << std::endl;
                break;
              default:
                std::cerr
                    << "unknown"
                    << std::endl;
                std::exit(2);
            }
        }
    }
    catch (std::exception& e)
    {
        std::cerr << e.what() << std::endl;
        std::exit(2);
    }

    return 0;
}