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cb769c62e5
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.
102 lines
2.2 KiB
C++
102 lines
2.2 KiB
C++
#include <iostream>
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#include <string.h>
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#include <stdlib.h>
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#include <qpdf/QPDF.hh>
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#include <qpdf/QPDFPageDocumentHelper.hh>
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#include <qpdf/QPDFPageObjectHelper.hh>
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#include <qpdf/QUtil.hh>
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#include <qpdf/QIntC.hh>
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static char const* whoami = 0;
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void usage()
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{
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std::cerr << "Usage: " << whoami << " filename page-number" << std::endl
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<< "Prints a dump of the objects in the content streams"
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<< " of the given page." << std::endl
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<< "Pages are numbered from 1." << std::endl;
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exit(2);
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}
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class ParserCallbacks: public QPDFObjectHandle::ParserCallbacks
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{
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public:
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virtual ~ParserCallbacks()
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{
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}
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virtual void contentSize(size_t);
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virtual void handleObject(QPDFObjectHandle, size_t offset, size_t length);
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virtual void handleEOF();
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};
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void
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ParserCallbacks::contentSize(size_t size)
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{
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std::cout << "content size: " << size << std::endl;
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}
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void
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ParserCallbacks::handleObject(QPDFObjectHandle obj,
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size_t offset, size_t length)
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{
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std::cout << obj.getTypeName() << ", offset=" << offset
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<< ", length=" << length << ": ";
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if (obj.isInlineImage())
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{
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std::cout << QUtil::hex_encode(obj.getInlineImageValue()) << std::endl;
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}
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else
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{
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std::cout << obj.unparse() << std::endl;
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}
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}
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void
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ParserCallbacks::handleEOF()
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{
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std::cout << "-EOF-" << std::endl;
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}
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int main(int argc, char* argv[])
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{
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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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if (argc != 3)
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{
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usage();
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}
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char const* filename = argv[1];
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int pageno = QUtil::string_to_int(argv[2]);
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try
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{
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QPDF pdf;
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pdf.processFile(filename);
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std::vector<QPDFPageObjectHelper> pages =
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QPDFPageDocumentHelper(pdf).getAllPages();
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if ((pageno < 1) || (QIntC::to_size(pageno) > pages.size()))
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{
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usage();
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}
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QPDFPageObjectHelper& page = pages.at(QIntC::to_size(pageno-1));
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ParserCallbacks cb;
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page.parseContents(&cb);
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}
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catch (std::exception& e)
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{
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std::cerr << whoami << ": " << e.what() << std::endl;
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exit(2);
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}
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return 0;
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}
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