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