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https://github.com/qpdf/qpdf.git
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72 lines
1.9 KiB
C++
72 lines
1.9 KiB
C++
#include <qpdf/QPDFJob.hh>
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#include <qpdf/QPDFUsage.hh>
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#include <qpdf/QUtil.hh>
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#include <cstdio>
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#include <cstdlib>
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#include <iostream>
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// This example demonstrates how we can use the QPDFJob createQPDF and writeQPDF methods to add
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// custom transformations to the output produced by QPDFJob runs. The example is a full copy of the
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// qpdf program modified to always remove all annotations from the final output.
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static char const* whoami = nullptr;
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static void
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usageExit(std::string const& msg)
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{
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std::cerr << std::endl
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<< whoami << ": " << msg << std::endl
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<< std::endl
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<< "For help:" << std::endl
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<< " " << whoami << " --help=usage usage information" << std::endl
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<< " " << whoami << " --help=topic help on a topic" << std::endl
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<< " " << whoami << " --help=--option help on an option" << std::endl
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<< " " << whoami << " --help general help and a topic list" << std::endl
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<< std::endl;
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exit(QPDFJob::EXIT_ERROR);
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}
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int
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realmain(int argc, char* argv[])
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{
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whoami = QUtil::getWhoami(argv[0]);
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QUtil::setLineBuf(stdout);
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QPDFJob j;
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try {
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// See "HOW TO ADD A COMMAND-LINE ARGUMENT" in README-maintainer.
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j.initializeFromArgv(argv);
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auto qpdf_sp = j.createQPDF();
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auto& pdf = *qpdf_sp;
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for (auto page: pdf.getAllPages()) {
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page.replaceKey("/Annots", "null"_qpdf);
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}
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j.writeQPDF(pdf);
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} catch (QPDFUsage& e) {
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usageExit(e.what());
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} catch (std::exception& e) {
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std::cerr << whoami << ": " << e.what() << std::endl;
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return QPDFJob::EXIT_ERROR;
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}
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return j.getExitCode();
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}
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#ifdef WINDOWS_WMAIN
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extern "C" int
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wmain(int argc, wchar_t* argv[])
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{
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return QUtil::call_main_from_wmain(argc, argv, realmain);
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}
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#else
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int
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main(int argc, char* argv[])
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{
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return realmain(argc, argv);
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}
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#endif
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