mirror of
https://github.com/qpdf/qpdf.git
synced 2024-09-27 12:39:06 +00:00
366 lines
9.5 KiB
C++
366 lines
9.5 KiB
C++
#include <qpdf/Buffer.hh>
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#include <qpdf/PointerHolder.hh>
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#include <qpdf/QPDF.hh>
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#include <qpdf/QPDFObject.hh>
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#include <qpdf/QPDFObjectHandle.hh>
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#include <qpdf/QPDFObjGen.hh>
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#include <qpdf/QPDFWriter.hh>
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#include <qpdf/QPDFXRefEntry.hh>
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#include <algorithm>
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#include <iostream>
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#include <set>
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#include <string>
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#include <vector>
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#include <cstdlib>
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void usage()
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{
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std::cerr
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<< "Usage: test_renumber [OPTION] INPUT.pdf"
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<< std::endl
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<< "Option:"
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<< std::endl
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<< " --object-streams=preserve|disable|generate"
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<< std::endl
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<< " --linearize"
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<< std::endl
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<< " --preserve-unreferenced"
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<< std::endl;
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}
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bool compare(QPDFObjectHandle a, QPDFObjectHandle b)
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{
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static std::set<QPDFObjGen> visited;
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if (a.isIndirect())
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{
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if (visited.count(a.getObjGen()))
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{
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return true;
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}
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visited.insert(a.getObjGen());
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}
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if (a.getTypeCode() != b.getTypeCode())
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{
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std::cerr
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<< "different type code"
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<< std::endl;
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return false;
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}
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switch (a.getTypeCode())
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{
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case QPDFObject::ot_boolean:
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if (a.getBoolValue() != b.getBoolValue())
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{
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std::cerr
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<< "different boolean"
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<< std::endl;
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return false;
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}
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break;
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case QPDFObject::ot_integer:
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if (a.getIntValue() != b.getIntValue())
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{
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std::cerr
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<< "different integer"
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<< std::endl;
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return false;
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}
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break;
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case QPDFObject::ot_real:
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if (a.getRealValue() != b.getRealValue())
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{
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std::cerr
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<< "different real"
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<< std::endl;
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return false;
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}
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break;
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case QPDFObject::ot_string:
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if (a.getStringValue() != b.getStringValue())
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{
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std::cerr
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<< "different string"
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<< std::endl;
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return false;
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}
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break;
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case QPDFObject::ot_name:
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if (a.getName() != b.getName())
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{
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std::cerr
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<< "different name"
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<< std::endl;
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return false;
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}
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break;
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case QPDFObject::ot_array:
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{
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std::vector<QPDFObjectHandle> objs_a = a.getArrayAsVector();
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std::vector<QPDFObjectHandle> objs_b = b.getArrayAsVector();
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size_t items = objs_a.size();
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if (items != objs_b.size())
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{
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std::cerr
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<< "different array size"
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<< std::endl;
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return false;
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}
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for (size_t i = 0; i < items; ++i)
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{
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if (!compare(objs_a[i], objs_b[i]))
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{
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std::cerr
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<< "different array item"
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<< std::endl;
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return false;
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}
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}
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}
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break;
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case QPDFObject::ot_dictionary:
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{
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std::set<std::string> keys_a = a.getKeys();
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std::set<std::string> keys_b = b.getKeys();
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if (keys_a != keys_b)
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{
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std::cerr
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<< "different dictionary keys"
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<< std::endl;
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return false;
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}
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for(std::set<std::string>::iterator iter = keys_a.begin();
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iter != keys_a.end(); ++iter)
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{
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if (!compare(a.getKey(*iter), b.getKey(*iter)))
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{
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std::cerr
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<< "different dictionary item"
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<< std::endl;
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return false;
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}
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}
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}
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break;
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case QPDFObject::ot_null:
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break;
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case QPDFObject::ot_stream:
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std::cout << "stream objects are not compared" << std::endl;
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break;
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default:
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std::cerr << "unknown object type" << std::endl;
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std::exit(2);
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}
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return true;
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}
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bool compare_xref_table(std::map<QPDFObjGen, QPDFXRefEntry> a,
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std::map<QPDFObjGen, QPDFXRefEntry> b)
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{
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if (a.size() != b.size())
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{
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std::cerr
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<< "different size"
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<< std::endl;
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return false;
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}
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for (std::map<QPDFObjGen, QPDFXRefEntry>::iterator iter = a.begin();
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iter != a.end(); ++iter)
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{
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std::cout
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<< "xref entry for "
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<< iter->first.getObj() << "/" << iter->first.getGen()
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<< std::endl;
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if (b.count(iter->first) == 0)
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{
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std::cerr
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<< "not found"
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<< std::endl;
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return false;
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}
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QPDFXRefEntry xref_a = iter->second;
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QPDFXRefEntry xref_b = b[iter->first];
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if (xref_a.getType() != xref_b.getType())
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{
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std::cerr
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<< "different xref entry type"
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<< std::endl;
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return false;
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}
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switch (xref_a.getType())
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{
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case 0:
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break;
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case 1:
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if (xref_a.getOffset() != xref_a.getOffset())
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{
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std::cerr
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<< "different offset"
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<< std::endl;
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return false;
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}
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break;
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case 2:
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if (xref_a.getObjStreamNumber() != xref_a.getObjStreamNumber() ||
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xref_a.getObjStreamIndex() != xref_a.getObjStreamIndex())
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{
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std::cerr
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<< "different stream number or index"
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<< std::endl;
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return false;
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}
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break;
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default:
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std::cerr
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<< "unknown xref entry type"
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<< std::endl;
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std::exit(2);
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}
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}
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return true;
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}
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int main(int argc, char *argv[])
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{
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if (argc < 2)
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{
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usage();
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std::exit(2);
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}
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qpdf_object_stream_e mode = qpdf_o_preserve;
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bool blinearize = false;
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bool bpreserve_unreferenced = false;
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std::string filename_input;
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for (int i = 1; i < argc; ++i)
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{
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if (argv[i][0] == '-')
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{
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std::string opt = argv[i];
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if (opt == "--object-streams=preserve")
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{
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mode = qpdf_o_preserve;
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}
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else if (opt == "--object-streams=disable")
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{
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mode = qpdf_o_disable;
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}
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else if (opt == "--object-streams=generate")
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{
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mode = qpdf_o_generate;
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}
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else if (opt == "--linearize")
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{
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blinearize = true;
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}
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else if (opt == "--preserve-unreferenced")
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{
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bpreserve_unreferenced = true;
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}
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else
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{
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usage();
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std::exit(2);
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}
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}
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else if (argc == i + 1)
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{
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filename_input = argv[i];
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break;
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}
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else
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{
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usage();
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std::exit(2);
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}
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}
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try
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{
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QPDF qpdf_in;
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qpdf_in.processFile(filename_input.c_str ());
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std::vector<QPDFObjectHandle> objs_in = qpdf_in.getAllObjects();
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QPDFWriter w(qpdf_in);
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w.setOutputMemory();
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w.setObjectStreamMode(mode);
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w.setLinearization(blinearize);
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w.setPreserveUnreferencedObjects(bpreserve_unreferenced);
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w.write();
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std::map<QPDFObjGen, QPDFXRefEntry> xrefs_w
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= w.getWrittenXRefTable();
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PointerHolder<Buffer> buf = w.getBuffer();
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QPDF qpdf_ren;
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qpdf_ren.processMemoryFile("renumbered",
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reinterpret_cast<char*>(buf->getBuffer()),
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buf->getSize());
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std::map<QPDFObjGen, QPDFXRefEntry> xrefs_ren
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= qpdf_ren.getXRefTable();
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std::cout
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<< "--- compare between input and renumbered objects ---"
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<< std::endl;
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for (std::vector<QPDFObjectHandle>::iterator iter = objs_in.begin();
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iter != objs_in.end(); ++iter)
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{
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QPDFObjGen og_in = iter->getObjGen();
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QPDFObjGen og_ren = w.getRenumberedObjGen(og_in);
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std::cout
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<< "input "
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<< og_in.getObj() << "/" << og_in.getGen()
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<< " -> renumbered "
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<< og_ren.getObj() << "/" << og_ren.getGen()
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<< std::endl;
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if (og_ren.getObj() == 0)
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{
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std::cout << "deleted" << std::endl;
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continue;
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}
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if (!compare(*iter, qpdf_ren.getObjectByObjGen(og_ren)))
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{
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std::cerr
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<< "different"
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<< std::endl;
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std::exit(2);
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}
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}
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std::cout << "complete" << std::endl;
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std::cout
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<< "--- compare between written and reloaded xref tables ---"
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<< std::endl;
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if (!compare_xref_table(xrefs_w, xrefs_ren))
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{
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std::cerr
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<< "different"
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<< std::endl;
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std::exit(2);
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}
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std::cout << "complete" << std::endl;
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std::cout << "succeeded" << std::endl;
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}
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catch (std::exception& e)
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{
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std::cerr << e.what() << std::endl;
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std::exit(2);
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}
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return 0;
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}
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