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Use QPDFObjGen::set in QPDFAcroFormDocumentHelper::transformAnnotations

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This commit is contained in:
m-holger 2023-01-05 14:04:41 +00:00
parent c12a6d06fc
commit e37ce44186
1 changed files with 58 additions and 64 deletions
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24
libqpdf/QPDFAcroFormDocumentHelper.cc
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@ -882,7 +882,7 @@ QPDFAcroFormDocumentHelper::transformAnnotations(
// Now do the actual copies.
std::set<QPDFObjGen> added_new_fields;
QPDFObjGen::set added_new_fields;
for (auto annot: old_annots.aitems()) {
if (annot.isStream()) {
annot.warnIfPossible("ignoring annotation that's a stream");
@ -964,19 +964,13 @@ QPDFAcroFormDocumentHelper::transformAnnotations(
// Traverse the field, copying kids, and preserving
// integrity.
std::list<QPDFObjectHandle> queue;
QPDFObjGen::set seen;
if (maybe_copy_object(top_field)) {
queue.push_back(top_field);
}
std::set<QPDFObjGen> seen;
while (!queue.empty()) {
QPDFObjectHandle obj = queue.front();
queue.pop_front();
auto orig_og = obj.getObjGen();
if (seen.count(orig_og)) {
// loop
break;
}
seen.insert(orig_og);
for (; !queue.empty(); queue.pop_front()) {
auto& obj = queue.front();
if (seen.add(obj)) {
auto parent = obj.getKey("/Parent");
if (parent.isIndirect()) {
auto parent_og = parent.getObjGen();
@ -985,8 +979,8 @@ QPDFAcroFormDocumentHelper::transformAnnotations(
} else {
parent.warnIfPossible(
"while traversing field " +
obj.getObjGen().unparse(',') + ", found parent (" +
parent_og.unparse(',') +
obj.getObjGen().unparse(',') +
", found parent (" + parent_og.unparse(',') +
") that had not been seen, indicating likely"
" invalid field structure");
}
@ -1033,6 +1027,7 @@ QPDFAcroFormDocumentHelper::transformAnnotations(
adjustDefaultAppearances(obj, dr_map);
}
}
}
// Now switch to copies. We already switched for top_field
maybe_copy_object(ffield_oh);
@ -1058,9 +1053,8 @@ QPDFAcroFormDocumentHelper::transformAnnotations(
maybe_copy_object(annot);
// Now we have copies, so we can safely mutate.
if (have_field && !added_new_fields.count(top_field.getObjGen())) {
if (have_field && added_new_fields.add(top_field)) {
new_fields.push_back(top_field);
added_new_fields.insert(top_field.getObjGen());
}
new_annots.push_back(annot);