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#include <qpdf/QPDFObject_private.hh>
std::string
QPDFObject::getDescription()
{
qpdf_offset_t shift = (getTypeCode() == ::ot_dictionary) ? 2
: (getTypeCode() == ::ot_array) ? 1
: 0;
if (object_description) {
switch (object_description->index()) {
case 0:
{
// Simple template string
auto description = std::get<0>(*object_description);
if (auto pos = description.find("$OG"); pos != std::string::npos) {
description.replace(pos, 3, og.unparse(' '));
}
if (auto pos = description.find("$PO"); pos != std::string::npos) {
description.replace(pos, 3, std::to_string(parsed_offset + shift));
}
return description;
}
case 1:
{
// QPDF::JSONReactor generated description
auto j_descr = std::get<1>(*object_description);
return (
*j_descr.input + (j_descr.object.empty() ? "" : ", " + j_descr.object) +
" at offset " + std::to_string(parsed_offset));
}
case 2:
{
// Child object description
auto j_descr = std::get<2>(*object_description);
std::string result;
if (auto p = j_descr.parent.lock()) {
result = p->getDescription();
}
result += j_descr.static_descr;
if (auto pos = result.find("$VD"); pos != std::string::npos) {
result.replace(pos, 3, j_descr.var_descr);
}
return result;
}
case 3:
auto [stream_id, obj_id] = std::get<3>(*object_description);
std::string result = qpdf ? qpdf->getFilename() : "";
result += " object stream " + std::to_string(stream_id) + ", object " +
std::to_string(obj_id) + " 0 at offset " + std::to_string(parsed_offset + shift);
return result;
}
} else if (og.isIndirect()) {
return "object " + og.unparse(' ');
}
return {};
}
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