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4f24617e1e
Where not possible, use "auto" to get the iterator type. Editorial note: I have avoid this change for a long time because of not wanting to make gratuitous changes to version history, which can obscure when certain changes were made, but with having recently touched every single file to apply automatic code formatting and with making several broad changes to the API, I decided it was time to take the plunge and get rid of the older (pre-C++11) verbose iterator syntax. The new code is just easier to read and understand, and in many cases, it will be more effecient as fewer temporary copies are being made. m-holger, if you're reading, you can see that I've finally come around. :-)
77 lines
1.9 KiB
C++
77 lines
1.9 KiB
C++
//
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// This is a stand-alone example of splitting a PDF into individual
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// pages. It does essentially the same thing that qpdf --split-pages
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// does.
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//
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#include <qpdf/QIntC.hh>
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#include <qpdf/QPDF.hh>
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#include <qpdf/QPDFPageDocumentHelper.hh>
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#include <qpdf/QPDFWriter.hh>
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#include <qpdf/QUtil.hh>
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#include <cstring>
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#include <iostream>
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#include <stdlib.h>
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#include <string>
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static bool static_id = false;
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static void
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process(char const* whoami, char const* infile, std::string outprefix)
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{
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QPDF inpdf;
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inpdf.processFile(infile);
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std::vector<QPDFPageObjectHelper> pages =
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QPDFPageDocumentHelper(inpdf).getAllPages();
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int pageno_len =
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QIntC::to_int(QUtil::uint_to_string(pages.size()).length());
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int pageno = 0;
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for (auto& page: pages) {
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std::string outfile =
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outprefix + QUtil::int_to_string(++pageno, pageno_len) + ".pdf";
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QPDF outpdf;
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outpdf.emptyPDF();
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QPDFPageDocumentHelper(outpdf).addPage(page, false);
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QPDFWriter outpdfw(outpdf, outfile.c_str());
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if (static_id) {
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// For the test suite, uncompress streams and use static
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// IDs.
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outpdfw.setStaticID(true); // for testing only
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outpdfw.setStreamDataMode(qpdf_s_uncompress);
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}
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outpdfw.write();
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}
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}
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void
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usage(char const* whoami)
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{
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std::cerr << "Usage: " << whoami << " infile outprefix" << 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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char const* whoami = QUtil::getWhoami(argv[0]);
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// For test suite
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if ((argc > 1) && (strcmp(argv[1], " --static-id") == 0)) {
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static_id = true;
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--argc;
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++argv;
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}
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if (argc != 3) {
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usage(whoami);
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}
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try {
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process(whoami, argv[1], argv[2]);
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} catch (std::exception const& e) {
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std::cerr << whoami << ": 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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