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This commit is contained in:
Jakub Melka
2020-03-21 16:36:27 +01:00
parent 96d2e33692
commit bc6ca3fc46
15 changed files with 966 additions and 9 deletions
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79
PdfForQtLib/sources/pdfobject.cpp
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@ -204,6 +204,25 @@ const PDFObject& PDFDictionary::get(const char* key) const
}
}
void PDFDictionary::setEntry(const QByteArray& key, PDFObject&& value)
{
auto it = find(key);
if (it != m_dictionary.end())
{
it->second = qMove(value);
}
else
{
addEntry(QByteArray(key), qMove(value));
}
}
void PDFDictionary::removeNullObjects()
{
m_dictionary.erase(std::remove_if(m_dictionary.begin(), m_dictionary.end(), [](const DictionaryEntry& entry) { return entry.second.isNull(); }), m_dictionary.end());
m_dictionary.shrink_to_fit();
}
void PDFDictionary::optimize()
{
m_dictionary.shrink_to_fit();
@ -219,6 +238,11 @@ std::vector<PDFDictionary::DictionaryEntry>::const_iterator PDFDictionary::find(
return std::find_if(m_dictionary.cbegin(), m_dictionary.cend(), [&key](const DictionaryEntry& entry) { return entry.first == key; });
}
std::vector<PDFDictionary::DictionaryEntry>::iterator PDFDictionary::find(const QByteArray& key)
{
return std::find_if(m_dictionary.begin(), m_dictionary.end(), [&key](const DictionaryEntry& entry) { return entry.first == key; });
}
std::vector<PDFDictionary::DictionaryEntry>::const_iterator PDFDictionary::find(const char* key) const
{
return std::find_if(m_dictionary.cbegin(), m_dictionary.cend(), [&key](const DictionaryEntry& entry) { return entry.first == key; });
@ -231,4 +255,59 @@ bool PDFStream::equals(const PDFObjectContent* other) const
return m_dictionary.equals(&otherStream->m_dictionary) && m_content == otherStream->m_content;
}
PDFObject PDFObjectManipulator::merge(PDFObject left, PDFObject right, MergeFlags flags)
{
if (left.getType() != right.getType())
{
return right;
}
if (left.isDictionary())
{
Q_ASSERT(right.isDictionary());
PDFDictionary targetDictionary = *left.getDictionary();
const PDFDictionary& sourceDictionary = *right.getDictionary();
for (size_t i = 0, count = sourceDictionary.getCount(); i < count; ++i)
{
const QByteArray& key = sourceDictionary.getKey(i);
PDFObject value = merge(targetDictionary.get(key), sourceDictionary.getValue(i), flags);
targetDictionary.setEntry(key, qMove(value));
}
if (flags.testFlag(RemoveNullObjects))
{
targetDictionary.removeNullObjects();
}
return PDFObject::createDictionary(std::make_shared<PDFDictionary>(qMove(targetDictionary)));
}
else if (left.isArray() && flags.testFlag(ConcatenateArrays))
{
// Concatenate arrays
const PDFArray* leftArray = left.getArray();
const PDFArray* rightArray = right.getArray();
std::vector<PDFObject> objects;
objects.reserve(leftArray->getCount() + rightArray->getCount());
for (size_t i = 0, count = leftArray->getCount(); i < count; ++i)
{
objects.emplace_back(leftArray->getItem(i));
}
for (size_t i = 0, count = rightArray->getCount(); i < count; ++i)
{
objects.emplace_back(rightArray->getItem(i));
}
return PDFObject::createArray(std::make_shared<PDFArray>(qMove(objects)));
}
return right;
}
PDFObject PDFObjectManipulator::removeNullObjects(PDFObject object)
{
return merge(object, object, RemoveNullObjects);
}
} // namespace pdf