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Code Issues Releases Wiki Activity

Merge pull request #1179 from m-holger/null

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In FUTURE, treat uninitialized object handles as null
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m-holger 2024-09-18 10:22:04 +01:00 committed by GitHub
commit 8f54319f7a
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17 changed files with 119 additions and 105 deletions
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2
examples/pdf-mod-info.cc
View File

@ -131,7 +131,7 @@ main(int argc, char* argv[])
QPDFObjectHandle fileinfo;
for (auto const& it: Keys) {
if (!fileinfo.isInitialized()) {
if (!fileinfo) {
if (filetrailer.hasKey("/Info")) {
QTC::TC("examples", "pdf-mod-info has info");
fileinfo = filetrailer.getKey("/Info");

11
include/qpdf/QPDFObjectHandle.hh
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@ -295,8 +295,12 @@ class QPDFObjectHandle
QPDF_DLL
QPDFObjectHandle& operator=(QPDFObjectHandle const&) = default;
// Return true if the QPDFObjectHandle is initialized. This allows object handles to be used in
// if statements with initializer.
QPDF_DLL
inline bool isInitialized() const;
explicit inline operator bool() const noexcept;
[[deprecated("use operator bool()")]] QPDF_DLL inline bool isInitialized() const;
// This method returns true if the QPDFObjectHandle objects point to exactly the same underlying
// object, meaning that changes to one are reflected in the other, or "if you paint one, the
@ -1634,5 +1638,10 @@ QPDFObjectHandle::isInitialized() const
return obj != nullptr;
}
inline QPDFObjectHandle::operator bool() const noexcept
{
return static_cast<bool>(obj);
}
#endif // QPDF_FUTURE
#endif // QPDFOBJECTHANDLE_HH

11
include/qpdf/QPDFObjectHandle_future.hh
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@ -295,8 +295,12 @@ class QPDFObjectHandle
QPDF_DLL
QPDFObjectHandle& operator=(QPDFObjectHandle&&) = default;
// Return true if the QPDFObjectHandle is initialized. This allows object handles to be used in
// if statements with initializer.
QPDF_DLL
inline bool isInitialized() const noexcept;
explicit inline operator bool() const noexcept;
[[deprecated("use operator bool()")]] QPDF_DLL inline bool isInitialized() const noexcept;
// This method returns true if the QPDFObjectHandle objects point to exactly the same underlying
// object, meaning that changes to one are reflected in the other, or "if you paint one, the
@ -1634,4 +1638,9 @@ QPDFObjectHandle::isInitialized() const noexcept
return obj != nullptr;
}
inline QPDFObjectHandle::operator bool() const noexcept
{
return static_cast<bool>(obj);
}
#endif // QPDFOBJECTHANDLE_FUTURE_HH

2
libqpdf/NNTree.cc
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@ -188,7 +188,7 @@ NNTreeIterator::resetLimits(QPDFObjectHandle node, std::list<PathElement>::itera
}
}
}
if (first.isInitialized() && last.isInitialized()) {
if (first && last) {
auto limits = QPDFObjectHandle::newArray();
limits.appendItem(first);
limits.appendItem(last);

18
libqpdf/QPDF.cc
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@ -526,7 +526,7 @@ QPDF::warn(
void
QPDF::setTrailer(QPDFObjectHandle obj)
{
if (m->trailer.isInitialized()) {
if (m->trailer) {
return;
}
m->trailer = obj;
@ -591,7 +591,7 @@ QPDF::reconstruct_xref(QPDFExc& e)
}
}
m->file->seek(pos, SEEK_SET);
} else if (!m->trailer.isInitialized() && t1.isWord("trailer")) {
} else if (!m->trailer && t1.isWord("trailer")) {
auto pos = m->file->tell();
QPDFObjectHandle t = readTrailer();
if (!t.isDictionary()) {
@ -606,7 +606,7 @@ QPDF::reconstruct_xref(QPDFExc& e)
}
m->deleted_objects.clear();
if (!m->trailer.isInitialized()) {
if (!m->trailer) {
qpdf_offset_t max_offset{0};
// If there are any xref streams, take the last one to appear.
for (auto const& iter: m->xref_table) {
@ -640,7 +640,7 @@ QPDF::reconstruct_xref(QPDFExc& e)
}
}
if (!m->trailer.isInitialized()) {
if (!m->trailer) {
// We could check the last encountered object to see if it was an xref stream. If so, we
// could try to get the trailer from there. This may make it possible to recover files with
// bad startxref pointers even when they have object streams.
@ -730,7 +730,7 @@ QPDF::read_xref(qpdf_offset_t xref_offset)
}
}
if (!m->trailer.isInitialized()) {
if (!m->trailer) {
throw damagedPDF("", 0, "unable to find trailer while reading xref");
}
int size = m->trailer.getKey("/Size").getIntValueAsInt();
@ -1000,7 +1000,7 @@ QPDF::read_xrefTable(qpdf_offset_t xref_offset)
throw damagedPDF("", "expected trailer dictionary");
}
if (!m->trailer.isInitialized()) {
if (!m->trailer) {
setTrailer(cur_trailer);
if (!m->trailer.hasKey("/Size")) {
@ -1258,7 +1258,7 @@ QPDF::processXRefStream(qpdf_offset_t xref_offset, QPDFObjectHandle& xref_obj)
}
}
if (!m->trailer.isInitialized()) {
if (!m->trailer) {
setTrailer(dict);
}
@ -2052,7 +2052,7 @@ QPDF::makeIndirectFromQPDFObject(std::shared_ptr<QPDFObject> const& obj)
QPDFObjectHandle
QPDF::makeIndirectObject(QPDFObjectHandle oh)
{
if (!oh.isInitialized()) {
if (!oh) {
throw std::logic_error("attempted to make an uninitialized QPDFObjectHandle indirect");
}
return makeIndirectFromQPDFObject(oh.getObj());
@ -2163,7 +2163,7 @@ QPDF::replaceObject(int objid, int generation, QPDFObjectHandle oh)
void
QPDF::replaceObject(QPDFObjGen const& og, QPDFObjectHandle oh)
{
if (!oh.isInitialized() || (oh.isIndirect() && !(oh.isStream() && oh.getObjGen() == og))) {
if (!oh || (oh.isIndirect() && !(oh.isStream() && oh.getObjGen() == og))) {
QTC::TC("qpdf", "QPDF replaceObject called with indirect object");
throw std::logic_error("QPDF::replaceObject called with indirect object handle");
}

6
libqpdf/QPDFFormFieldObjectHelper.cc
View File

@ -396,7 +396,7 @@ QPDFFormFieldObjectHelper::setRadioButtonValue(QPDFObjectHandle name)
} else {
annot = kid;
}
if (!annot.isInitialized()) {
if (!annot) {
QTC::TC("qpdf", "QPDFObjectHandle broken radio button");
this->oh.warnIfPossible("unable to set the value of this radio button");
continue;
@ -459,7 +459,7 @@ QPDFFormFieldObjectHelper::setCheckBoxValue(bool value)
// Set /AS to the on value or /Off in addition to setting /V.
QPDFObjectHandle name = QPDFObjectHandle::newName(value ? on_value : "/Off");
setFieldAttribute("/V", name);
if (!annot.isInitialized()) {
if (!annot) {
QTC::TC("qpdf", "QPDFObjectHandle broken checkbox");
this->oh.warnIfPossible("unable to set the value of this checkbox");
return;
@ -815,7 +815,7 @@ QPDFFormFieldObjectHelper::generateTextAppearance(QPDFAnnotationObjectHelper& ao
QPDFObjectHandle resources = AS.getDict().getKey("/Resources");
QPDFObjectHandle font = getFontFromResource(resources, font_name);
bool found_font_in_dr = false;
if (!font.isInitialized()) {
if (!font) {
QPDFObjectHandle dr = getDefaultResources();
font = getFontFromResource(dr, font_name);
found_font_in_dr = font.isDictionary();

41
libqpdf/QPDFObjectHandle.cc
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@ -1021,8 +1021,9 @@ QPDFObjectHandle::getArrayItem(int n) const
#endif
{
if (auto array = asArray()) {
if (auto result = array->at(n); result.obj != nullptr) {
return result;
auto result = array->at(n);
if (result.first) {
return result.second;
} else {
objectWarning("returning null for out of bounds array access");
QTC::TC("qpdf", "QPDFObjectHandle array bounds");
@ -1045,7 +1046,7 @@ QPDFObjectHandle::isRectangle() const
{
if (auto array = asArray()) {
for (int i = 0; i < 4; ++i) {
if (auto item = array->at(i); !(item.obj && item.isNumber())) {
if (auto item = array->at(i).second; !item.isNumber()) {
return false;
}
}
@ -1064,7 +1065,7 @@ QPDFObjectHandle::isMatrix() const
{
if (auto array = asArray()) {
for (int i = 0; i < 6; ++i) {
if (auto item = array->at(i); !(item.obj && item.isNumber())) {
if (auto item = array->at(i).second; !item.isNumber()) {
return false;
}
}
@ -1087,7 +1088,7 @@ QPDFObjectHandle::getArrayAsRectangle() const
}
double items[4];
for (int i = 0; i < 4; ++i) {
if (!array->at(i).getValueAsNumber(items[i])) {
if (auto item = array->at(i).second; !item.getValueAsNumber(items[i])) {
return {};
}
}
@ -1114,7 +1115,7 @@ QPDFObjectHandle::getArrayAsMatrix() const
}
double items[6];
for (int i = 0; i < 6; ++i) {
if (!array->at(i).getValueAsNumber(items[i])) {
if (auto item = array->at(i).second; !item.getValueAsNumber(items[i])) {
return {};
}
}
@ -1224,7 +1225,7 @@ QPDFObjectHandle
QPDFObjectHandle::eraseItemAndGetOld(int at)
{
auto array = asArray();
auto result = (array && at < array->size() && at >= 0) ? array->at(at) : newNull();
auto result = (array && at < array->size() && at >= 0) ? array->at(at).second : newNull();
eraseItem(at);
return result;
}
@ -1764,7 +1765,7 @@ QPDFObjectHandle::arrayOrStreamToStreamArray(
if (auto array = asArray()) {
int n_items = array->size();
for (int i = 0; i < n_items; ++i) {
QPDFObjectHandle item = array->at(i);
QPDFObjectHandle item = array->at(i).second;
if (item.isStream()) {
result.push_back(item);
} else {
@ -2165,7 +2166,7 @@ QPDFObjectHandle::parseContentStream_data(
input->seek(offset, SEEK_SET);
auto obj =
QPDFParser(*input, "content", tokenizer, nullptr, context, false).parse(empty, true);
if (!obj.isInitialized()) {
if (!obj) {
// EOF
break;
}
@ -2465,7 +2466,7 @@ QPDFObjectHandle::makeDirect(QPDFObjGen::set& visited, bool stop_at_streams)
auto array = asArray();
int n = array->size();
for (int i = 0; i < n; ++i) {
items.push_back(array->at(i));
items.push_back(array->at(i).second);
items.back().makeDirect(visited, stop_at_streams);
}
this->obj = QPDF_Array::create(items);
@ -2520,7 +2521,7 @@ QPDFObjectHandle::makeDirect(bool allow_streams)
void
QPDFObjectHandle::assertInitialized() const
{
if (!isInitialized()) {
if (!obj) {
throw std::logic_error("operation attempted on uninitialized QPDFObjectHandle");
}
}
@ -3018,34 +3019,30 @@ QPDFObjectHandle::QPDFArrayItems::end()
QPDFObjGen
QPDFObjectHandle::getObjGen() const
{
return isInitialized() ? obj->getObjGen() : QPDFObjGen();
return obj ? obj->getObjGen() : QPDFObjGen();
}
// Indirect object accessors
QPDF*
QPDFObjectHandle::getOwningQPDF() const
{
return isInitialized() ? this->obj->getQPDF() : nullptr;
return obj ? obj->getQPDF() : nullptr;
}
QPDF&
QPDFObjectHandle::getQPDF(std::string const& error_msg) const
{
auto result = isInitialized() ? this->obj->getQPDF() : nullptr;
if (result == nullptr) {
throw std::runtime_error(
error_msg.empty() ? "attempt to use a null qpdf object" : error_msg);
if (auto result = obj ? obj->getQPDF() : nullptr) {
return *result;
}
return *result;
throw std::runtime_error(error_msg.empty() ? "attempt to use a null qpdf object" : error_msg);
}
void
QPDFObjectHandle::setParsedOffset(qpdf_offset_t offset)
{
// This is called during parsing on newly created direct objects,
// so we can't call dereference() here.
if (isInitialized()) {
this->obj->setParsedOffset(offset);
if (obj) {
obj->setParsedOffset(offset);
}
}

4
libqpdf/QPDFOutlineDocumentHelper.cc
View File

@ -67,7 +67,7 @@ QPDFOutlineDocumentHelper::resolveNamedDest(QPDFObjectHandle name)
{
QPDFObjectHandle result;
if (name.isName()) {
if (!m->dest_dict.isInitialized()) {
if (!m->dest_dict) {
m->dest_dict = qpdf.getRoot().getKey("/Dests");
}
QTC::TC("qpdf", "QPDFOutlineDocumentHelper name named dest");
@ -85,7 +85,7 @@ QPDFOutlineDocumentHelper::resolveNamedDest(QPDFObjectHandle name)
}
}
}
if (!result.isInitialized()) {
if (!result) {
return QPDFObjectHandle::newNull();
}
if (result.isDictionary()) {

4
libqpdf/QPDFOutlineObjectHelper.cc
View File

@ -59,8 +59,8 @@ QPDFOutlineObjectHelper::getDest()
QTC::TC("qpdf", "QPDFOutlineObjectHelper action dest");
dest = A.getKey("/D");
}
if (!dest.isInitialized()) {
dest = QPDFObjectHandle::newNull();
if (!dest) {
return QPDFObjectHandle::newNull();
}
if (dest.isName() || dest.isString()) {

4
libqpdf/QPDFWriter.cc
View File

@ -1381,7 +1381,7 @@ QPDFWriter::unparseObject(
}
}
if (extensions.isInitialized()) {
if (extensions) {
std::set<std::string> keys = extensions.getKeys();
if (keys.count("/ADBE") > 0) {
have_extensions_adbe = true;
@ -1412,7 +1412,7 @@ QPDFWriter::unparseObject(
}
}
if (extensions.isInitialized()) {
if (extensions) {
QTC::TC("qpdf", "QPDFWriter preserve Extensions");
QPDFObjectHandle adbe = extensions.getKey("/ADBE");
if (adbe.isDictionary() &&

8
libqpdf/QPDF_Array.cc
View File

@ -184,16 +184,16 @@ QPDF_Array::writeJSON(int json_version, JSON::Writer& p)
p.writeEnd(']');
}
QPDFObjectHandle
std::pair<bool, QPDFObjectHandle>
QPDF_Array::at(int n) const noexcept
{
if (n < 0 || n >= size()) {
return {};
return {false, {}};
} else if (sp) {
auto const& iter = sp->elements.find(n);
return iter == sp->elements.end() ? null_oh : (*iter).second;
return {true, iter == sp->elements.end() ? null_oh : (*iter).second};
} else {
return elements[size_t(n)];
return {true, elements[size_t(n)]};
}
}

13
libqpdf/QPDF_Stream.cc
View File

@ -661,18 +661,17 @@ void
QPDF_Stream::replaceFilterData(
QPDFObjectHandle const& filter, QPDFObjectHandle const& decode_parms, size_t length)
{
if (filter.isInitialized()) {
this->stream_dict.replaceKey("/Filter", filter);
if (filter) {
stream_dict.replaceKey("/Filter", filter);
}
if (decode_parms.isInitialized()) {
this->stream_dict.replaceKey("/DecodeParms", decode_parms);
if (decode_parms) {
stream_dict.replaceKey("/DecodeParms", decode_parms);
}
if (length == 0) {
QTC::TC("qpdf", "QPDF_Stream unknown stream length");
this->stream_dict.removeKey("/Length");
stream_dict.removeKey("/Length");
} else {
this->stream_dict.replaceKey(
"/Length", QPDFObjectHandle::newInteger(QIntC::to_longlong(length)));
stream_dict.replaceKey("/Length", QPDFObjectHandle::newInteger(QIntC::to_longlong(length)));
}
}

6
libqpdf/QPDF_json.cc
View File

@ -325,7 +325,7 @@ QPDF::JSONReactor::anyErrors() const
void
QPDF::JSONReactor::containerStart()
{
if (next_obj.isInitialized()) {
if (next_obj) {
stack.emplace_back(next_state, std::move(next_obj));
next_obj = QPDFObjectHandle();
} else {
@ -558,7 +558,7 @@ QPDF::JSONReactor::dictionaryItem(std::string const& key, JSON const& value)
throw std::logic_error("stack empty in st_object_top");
}
auto& tos = stack.back();
if (!tos.object.isInitialized()) {
if (!tos.object) {
throw std::logic_error("current object uninitialized in st_object_top");
}
if (key == "value") {
@ -767,7 +767,7 @@ QPDF::JSONReactor::makeObject(JSON const& value)
result = QPDFObjectHandle::newNull();
}
}
if (!result.isInitialized()) {
if (!result) {
throw std::logic_error("JSONReactor::makeObject didn't initialize the object");
}

2
libqpdf/qpdf-c.cc
View File

@ -955,7 +955,7 @@ qpdf_oh_is_initialized(qpdf_data qpdf, qpdf_oh oh)
{
QTC::TC("qpdf", "qpdf-c called qpdf_oh_is_initialized");
return do_with_oh<QPDF_BOOL>(
qpdf, oh, return_false, [](QPDFObjectHandle& o) { return o.isInitialized(); });
qpdf, oh, return_false, [](QPDFObjectHandle& o) { return static_cast<bool>(o); });
}
QPDF_BOOL

2
libqpdf/qpdf/QPDF_Array.hh
View File

@ -30,7 +30,7 @@ class QPDF_Array: public QPDFValue
{
return sp ? sp->size : int(elements.size());
}
QPDFObjectHandle at(int n) const noexcept;
std::pair<bool, QPDFObjectHandle> at(int n) const noexcept;
bool setAt(int n, QPDFObjectHandle const& oh);
std::vector<QPDFObjectHandle> getAsVector() const;
void setFromVector(std::vector<QPDFObjectHandle> const& items);

80
libtests/sparse_array.cc
View File

@ -21,69 +21,69 @@ main()
a.push_back(QPDFObjectHandle::parse("null"));
a.push_back(QPDFObjectHandle::parse("/Quack"));
assert(a.size() == 5);
assert(a.at(0).isInteger() && (a.at(0).getIntValue() == 1));
assert(a.at(1).isString() && (a.at(1).getStringValue() == "potato"));
assert(a.at(2).isNull());
assert(a.at(3).isNull());
assert(a.at(4).isName() && (a.at(4).getName() == "/Quack"));
assert(a.at(0).second.isInteger() && (a.at(0).second.getIntValue() == 1));
assert(a.at(1).second.isString() && (a.at(1).second.getStringValue() == "potato"));
assert(a.at(2).second.isNull());
assert(a.at(3).second.isNull());
assert(a.at(4).second.isName() && (a.at(4).second.getName() == "/Quack"));
a.insert(4, QPDFObjectHandle::parse("/BeforeQuack"));
assert(a.size() == 6);
assert(a.at(0).isInteger() && (a.at(0).getIntValue() == 1));
assert(a.at(4).isName() && (a.at(4).getName() == "/BeforeQuack"));
assert(a.at(5).isName() && (a.at(5).getName() == "/Quack"));
assert(a.at(0).second.isInteger() && (a.at(0).second.getIntValue() == 1));
assert(a.at(4).second.isName() && (a.at(4).second.getName() == "/BeforeQuack"));
assert(a.at(5).second.isName() && (a.at(5).second.getName() == "/Quack"));
a.insert(2, QPDFObjectHandle::parse("/Third"));
assert(a.size() == 7);
assert(a.at(1).isString() && (a.at(1).getStringValue() == "potato"));
assert(a.at(2).isName() && (a.at(2).getName() == "/Third"));
assert(a.at(3).isNull());
assert(a.at(6).isName() && (a.at(6).getName() == "/Quack"));
assert(a.at(1).second.isString() && (a.at(1).second.getStringValue() == "potato"));
assert(a.at(2).second.isName() && (a.at(2).second.getName() == "/Third"));
assert(a.at(3).second.isNull());
assert(a.at(6).second.isName() && (a.at(6).second.getName() == "/Quack"));
a.insert(0, QPDFObjectHandle::parse("/First"));
assert(a.size() == 8);
assert(a.at(0).isName() && (a.at(0).getName() == "/First"));
assert(a.at(1).isInteger() && (a.at(1).getIntValue() == 1));
assert(a.at(7).isName() && (a.at(7).getName() == "/Quack"));
assert(a.at(0).second.isName() && (a.at(0).second.getName() == "/First"));
assert(a.at(1).second.isInteger() && (a.at(1).second.getIntValue() == 1));
assert(a.at(7).second.isName() && (a.at(7).second.getName() == "/Quack"));
a.erase(6);
assert(a.size() == 7);
assert(a.at(0).isName() && (a.at(0).getName() == "/First"));
assert(a.at(1).isInteger() && (a.at(1).getIntValue() == 1));
assert(a.at(5).isNull());
assert(a.at(6).isName() && (a.at(6).getName() == "/Quack"));
assert(a.at(0).second.isName() && (a.at(0).second.getName() == "/First"));
assert(a.at(1).second.isInteger() && (a.at(1).second.getIntValue() == 1));
assert(a.at(5).second.isNull());
assert(a.at(6).second.isName() && (a.at(6).second.getName() == "/Quack"));
a.erase(6);
assert(a.size() == 6);
assert(a.at(0).isName() && (a.at(0).getName() == "/First"));
assert(a.at(1).isInteger() && (a.at(1).getIntValue() == 1));
assert(a.at(3).isName() && (a.at(3).getName() == "/Third"));
assert(a.at(4).isNull());
assert(a.at(5).isNull());
assert(a.at(0).second.isName() && (a.at(0).second.getName() == "/First"));
assert(a.at(1).second.isInteger() && (a.at(1).second.getIntValue() == 1));
assert(a.at(3).second.isName() && (a.at(3).second.getName() == "/Third"));
assert(a.at(4).second.isNull());
assert(a.at(5).second.isNull());
a.setAt(4, QPDFObjectHandle::parse("12"));
assert(a.at(4).isInteger() && (a.at(4).getIntValue() == 12));
assert(a.at(4).second.isInteger() && (a.at(4).second.getIntValue() == 12));
a.setAt(4, QPDFObjectHandle::newNull());
assert(a.at(4).isNull());
assert(a.at(4).second.isNull());
a.erase(a.size() - 1);
assert(a.size() == 5);
assert(a.at(0).isName() && (a.at(0).getName() == "/First"));
assert(a.at(1).isInteger() && (a.at(1).getIntValue() == 1));
assert(a.at(3).isName() && (a.at(3).getName() == "/Third"));
assert(a.at(4).isNull());
assert(a.at(0).second.isName() && (a.at(0).second.getName() == "/First"));
assert(a.at(1).second.isInteger() && (a.at(1).second.getIntValue() == 1));
assert(a.at(3).second.isName() && (a.at(3).second.getName() == "/Third"));
assert(a.at(4).second.isNull());
a.erase(a.size() - 1);
assert(a.size() == 4);
assert(a.at(0).isName() && (a.at(0).getName() == "/First"));
assert(a.at(1).isInteger() && (a.at(1).getIntValue() == 1));
assert(a.at(3).isName() && (a.at(3).getName() == "/Third"));
assert(a.at(0).second.isName() && (a.at(0).second.getName() == "/First"));
assert(a.at(1).second.isInteger() && (a.at(1).second.getIntValue() == 1));
assert(a.at(3).second.isName() && (a.at(3).second.getName() == "/Third"));
a.erase(a.size() - 1);
assert(a.size() == 3);
assert(a.at(0).isName() && (a.at(0).getName() == "/First"));
assert(a.at(1).isInteger() && (a.at(1).getIntValue() == 1));
assert(a.at(2).isString() && (a.at(2).getStringValue() == "potato"));
assert(a.at(0).second.isName() && (a.at(0).second.getName() == "/First"));
assert(a.at(1).second.isInteger() && (a.at(1).second.getIntValue() == 1));
assert(a.at(2).second.isString() && (a.at(2).second.getStringValue() == "potato"));
QPDF pdf;
pdf.emptyPDF();
@ -92,13 +92,13 @@ main()
QPDF_Array& b = *obj->as<QPDF_Array>();
b.setAt(5, pdf.newIndirectNull());
b.setAt(7, "[0 1 2 3]"_qpdf);
assert(b.at(3).isNull());
assert(b.at(8).isNull());
assert(b.at(5).isIndirect());
assert(b.at(3).second.isNull());
assert(b.at(8).second.isNull());
assert(b.at(5).second.isIndirect());
assert(b.unparse() == "[ null null null null null 3 0 R null [ 0 1 2 3 ] null null ]");
auto c = b.copy(true);
auto d = b.copy(false);
b.at(7).setArrayItem(2, "42"_qpdf);
b.at(7).second.setArrayItem(2, "42"_qpdf);
assert(c->unparse() == "[ null null null null null 3 0 R null [ 0 1 42 3 ] null null ]");
assert(d->unparse() == "[ null null null null null 3 0 R null [ 0 1 2 3 ] null null ]");

10
qpdf/test_driver.cc
View File

@ -1428,7 +1428,7 @@ test_42(QPDF& pdf, char const* arg2)
assert(i == ai.end());
++i;
assert(i == ai.end());
assert(!i_value.isInitialized());
assert(!i_value);
--i;
assert(i_value.getName() == "/Item2");
assert(i->getName() == "/Item2");
@ -1444,7 +1444,7 @@ test_42(QPDF& pdf, char const* arg2)
++i;
++i;
assert(i == di.end());
assert(!i_value.second.isInitialized());
assert(!i_value.second);
}
assert("" == qtest.getStringValue());
array.getArrayItem(-1).assertNull();
@ -1542,7 +1542,7 @@ test_42(QPDF& pdf, char const* arg2)
assert(m1.a == 0 && m1.b == 0 && m1.c == 0 && m1.d == 0 && m1.e == 0 && m1.f == 0);
// Uninitialized
QPDFObjectHandle uninitialized;
assert(!uninitialized.isInitialized());
assert(!uninitialized);
assert(!uninitialized.isInteger());
assert(!uninitialized.isDictionary());
assert(!uninitialized.isScalar());
@ -1692,7 +1692,7 @@ test_46(QPDF& pdf, char const* arg2)
assert(iter1_val.first == 2);
++iter1;
assert(iter1 == new1.end());
assert(!iter1_val.second.isInitialized());
assert(!iter1_val.second);
++iter1;
assert(iter1->first == 1);
--iter1;
@ -1842,7 +1842,7 @@ test_48(QPDF& pdf, char const* arg2)
assert(iter1_val.first == "2");
++iter1;
assert(iter1 == new1.end());
assert(!iter1_val.second.isInitialized());
assert(!iter1_val.second);
++iter1;
assert(iter1->first == "1");
--iter1;