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Add private method QPDFObjectHandle::getObjGenAsStr

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Also, use methods to access objid and generation.
This commit is contained in:
m-holger 2022-06-23 19:53:05 +01:00 committed by Jay Berkenbilt
parent 97f737a562
commit e9c1637353
2 changed files with 23 additions and 33 deletions
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1
include/qpdf/QPDFObjectHandle.hh
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@ -1581,6 +1581,7 @@ class QPDFObjectHandle
bool stop_at_streams);
void shallowCopyInternal(QPDFObjectHandle& oh, bool first_level_only);
void releaseResolved();
std::string getObjGenAsStr() const;
static void setObjectDescriptionFromInput(
QPDFObjectHandle,
QPDF*,

55
libqpdf/QPDFObjectHandle.cc
View File

@ -338,7 +338,7 @@ QPDFObjectHandle::isDirectNull() const
// Don't call dereference() -- this is a const method, and we know
// objid == 0, so there's nothing to resolve.
return (
this->initialized && (this->objid == 0) &&
this->initialized && (getObjectID() == 0) &&
QPDFObjectTypeAccessor<QPDF_Null>::check(obj.get()));
}
@ -490,7 +490,7 @@ QPDFObjectHandle::isIndirect()
if (!this->initialized) {
return false;
}
return (this->objid != 0);
return (getObjectID() != 0);
}
bool
@ -1549,6 +1549,13 @@ QPDFObjectHandle::getObjGen() const
return QPDFObjGen(this->objid, this->generation);
}
std::string
QPDFObjectHandle::getObjGenAsStr() const
{
return QUtil::int_to_string(this->objid) + " " +
QUtil::int_to_string(this->generation);
}
int
QPDFObjectHandle::getObjectID() const
{
@ -1608,14 +1615,12 @@ QPDFObjectHandle::arrayOrStreamToStreamArray(
bool first = true;
for (auto const& item: result) {
std::string og = QUtil::int_to_string(item.getObjectID()) + " " +
QUtil::int_to_string(item.getGeneration());
if (first) {
first = false;
} else {
all_description += ",";
}
all_description += " stream " + og;
all_description += " stream " + item.getObjGenAsStr();
}
return result;
@ -1624,9 +1629,7 @@ QPDFObjectHandle::arrayOrStreamToStreamArray(
std::vector<QPDFObjectHandle>
QPDFObjectHandle::getPageContents()
{
std::string description = "page object " +
QUtil::int_to_string(this->objid) + " " +
QUtil::int_to_string(this->generation);
std::string description = "page object " + getObjGenAsStr();
std::string all_description;
return this->getKey("/Contents")
.arrayOrStreamToStreamArray(description, all_description);
@ -1735,8 +1738,7 @@ QPDFObjectHandle::unparse()
{
std::string result;
if (this->isIndirect()) {
result = QUtil::int_to_string(this->objid) + " " +
QUtil::int_to_string(this->generation) + " R";
result = getObjGenAsStr() + " R";
} else {
result = unparseResolved();
}
@ -1848,9 +1850,7 @@ QPDFObjectHandle::parse(
void
QPDFObjectHandle::pipePageContents(Pipeline* p)
{
std::string description = "page object " +
QUtil::int_to_string(this->objid) + " " +
QUtil::int_to_string(this->generation);
std::string description = "page object " + getObjGenAsStr();
std::string all_description;
this->getKey("/Contents")
.pipeContentStreams(p, description, all_description);
@ -1869,15 +1869,12 @@ QPDFObjectHandle::pipeContentStreams(
buf.writeCStr("\n");
}
LastChar lc(&buf);
std::string og = QUtil::int_to_string(stream.getObjectID()) + " " +
QUtil::int_to_string(stream.getGeneration());
std::string w_description = "content stream object " + og;
if (!stream.pipeStreamData(&lc, 0, qpdf_dl_specialized)) {
QTC::TC("qpdf", "QPDFObjectHandle errors in parsecontent");
throw QPDFExc(
qpdf_e_damaged_pdf,
"content stream",
w_description,
"content stream object " + stream.getObjGenAsStr(),
0,
"errors while decoding content stream");
}
@ -1893,9 +1890,7 @@ QPDFObjectHandle::pipeContentStreams(
void
QPDFObjectHandle::parsePageContents(ParserCallbacks* callbacks)
{
std::string description = "page object " +
QUtil::int_to_string(this->objid) + " " +
QUtil::int_to_string(this->generation);
std::string description = "page object " + getObjGenAsStr();
this->getKey("/Contents")
.parseContentStream_internal(description, callbacks);
}
@ -1903,17 +1898,14 @@ QPDFObjectHandle::parsePageContents(ParserCallbacks* callbacks)
void
QPDFObjectHandle::parseAsContents(ParserCallbacks* callbacks)
{
std::string description = "object " + QUtil::int_to_string(this->objid) +
" " + QUtil::int_to_string(this->generation);
std::string description = "object " + getObjGenAsStr();
this->parseContentStream_internal(description, callbacks);
}
void
QPDFObjectHandle::filterPageContents(TokenFilter* filter, Pipeline* next)
{
std::string description = "token filter for page object " +
QUtil::int_to_string(this->objid) + " " +
QUtil::int_to_string(this->generation);
auto description = "token filter for page object " + getObjGenAsStr();
Pl_QPDFTokenizer token_pipeline(description.c_str(), filter, next);
this->pipePageContents(&token_pipeline);
}
@ -1921,9 +1913,7 @@ QPDFObjectHandle::filterPageContents(TokenFilter* filter, Pipeline* next)
void
QPDFObjectHandle::filterAsContents(TokenFilter* filter, Pipeline* next)
{
std::string description = "token filter for object " +
QUtil::int_to_string(this->objid) + " " +
QUtil::int_to_string(this->generation);
auto description = "token filter for object " + getObjGenAsStr();
Pl_QPDFTokenizer token_pipeline(description.c_str(), filter, next);
this->pipeStreamData(&token_pipeline, 0, qpdf_dl_specialized);
}
@ -2862,7 +2852,7 @@ QPDFObjectHandle::copyObject(
"attempt to make a stream into a direct object");
}
QPDFObjGen cur_og(this->objid, this->generation);
auto cur_og = getObjGen();
if (cur_og.getObj() != 0) {
if (visited.count(cur_og)) {
QTC::TC("qpdf", "QPDFObjectHandle makeDirect loop");
@ -3204,14 +3194,13 @@ QPDFObjectHandle::dereference()
throw std::logic_error(
"attempted to dereference an uninitialized QPDFObjectHandle");
}
if (this->obj.get() && this->objid &&
QPDF::Resolver::objectChanged(
this->qpdf, QPDFObjGen(this->objid, this->generation), this->obj)) {
if (this->obj.get() && getObjectID() &&
QPDF::Resolver::objectChanged(this->qpdf, getObjGen(), this->obj)) {
this->obj = nullptr;
}
if (this->obj.get() == 0) {
std::shared_ptr<QPDFObject> obj =
QPDF::Resolver::resolve(this->qpdf, this->objid, this->generation);
QPDF::Resolver::resolve(this->qpdf, getObjectID(), getGeneration());
if (obj.get() == 0) {
// QPDF::resolve never returns an uninitialized object, but
// check just in case.