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This comment expands all tabs using an 8-character tab-width. You should ignore this commit when using git blame or use git blame -w. In the early days, I used to use tabs where possible for indentation, since emacs did this automatically. In recent years, I have switched to only using spaces, which means qpdf source code has been a mixture of spaces and tabs. I have avoided cleaning this up because of not wanting gratuitous whitespaces change to cloud the output of git blame, but I changed my mind after discussing with users who view qpdf source code in editors/IDEs that have other tab widths by default and in light of the fact that I am planning to start applying automatic code formatting soon.
90 lines
2.2 KiB
C++
90 lines
2.2 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/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 <qpdf/QIntC.hh>
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#include <iostream>
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#include <stdlib.h>
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#include <string>
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#include <cstring>
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static bool static_id = false;
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static void process(char const* whoami,
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char const* infile,
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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 (std::vector<QPDFPageObjectHelper>::iterator iter = pages.begin();
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iter != pages.end(); ++iter)
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{
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QPDFPageObjectHelper& page(*iter);
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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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{
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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 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 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 libtool's sake....
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if (strncmp(whoami, "lt-", 3) == 0)
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{
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whoami += 3;
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}
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// For test suite
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if ((argc > 1) && (strcmp(argv[1], " --static-id") == 0))
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{
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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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{
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usage(whoami);
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}
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try
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{
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process(whoami, argv[1], argv[2]);
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}
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catch (std::exception const& e)
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{
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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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