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