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Optional content - first part

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Jakub Melka
2019-06-23 18:35:32 +02:00
parent a429052002
commit 48f4a24923
9 changed files with 454 additions and 4 deletions
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94
PdfForQtLib/sources/pdfdocument.cpp
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@ -411,6 +411,26 @@ PDFInteger PDFDocumentDataLoaderDecorator::readIntegerFromDictionary(const PDFDi
return defaultValue;
}
QString PDFDocumentDataLoaderDecorator::readTextStringFromDictionary(const PDFDictionary* dictionary, const char* key, const QString& defaultValue) const
{
if (dictionary->hasKey(key))
{
return readTextString(dictionary->get(key), defaultValue);
}
return defaultValue;
}
std::vector<PDFObjectReference> PDFDocumentDataLoaderDecorator::readReferenceArrayFromDictionary(const PDFDictionary* dictionary, const char* key)
{
if (dictionary->hasKey(key))
{
return readReferenceArray(dictionary->get(key));
}
return std::vector<PDFObjectReference>();
}
std::vector<PDFReal> PDFDocumentDataLoaderDecorator::readNumberArray(const PDFObject& object) const
{
const PDFObject& dereferencedObject = m_document->getObject(object);
@ -470,6 +490,80 @@ std::vector<PDFInteger> PDFDocumentDataLoaderDecorator::readIntegerArray(const P
return std::vector<PDFInteger>();
}
std::vector<PDFObjectReference> PDFDocumentDataLoaderDecorator::readReferenceArray(const PDFObject& object) const
{
const PDFObject& dereferencedObject = m_document->getObject(object);
if (dereferencedObject.isArray())
{
const PDFArray* array = dereferencedObject.getArray();
std::vector<PDFObjectReference> result;
const size_t count = array->getCount();
result.reserve(count);
for (size_t i = 0; i < count; ++i)
{
const PDFObject& referenceObject = array->getItem(i);
if (referenceObject.isReference())
{
result.push_back(referenceObject.getReference());
}
else
{
result.clear();
break;
}
}
// We assume, that RVO (return value optimization) will not work for this function
// (multiple return points).
return std::move(result);
}
return std::vector<PDFObjectReference>();
}
std::vector<QByteArray> PDFDocumentDataLoaderDecorator::readNameArray(const PDFObject& object) const
{
const PDFObject& dereferencedObject = m_document->getObject(object);
if (dereferencedObject.isArray())
{
const PDFArray* array = dereferencedObject.getArray();
std::vector<QByteArray> result;
const size_t count = array->getCount();
result.reserve(count);
for (size_t i = 0; i < count; ++i)
{
const PDFObject& nameObject = array->getItem(i);
if (nameObject.isName())
{
result.push_back(nameObject.getString());
}
else
{
result.clear();
break;
}
}
// We assume, that RVO (return value optimization) will not work for this function
// (multiple return points).
return std::move(result);
}
return std::vector<QByteArray>();
}
std::vector<QByteArray> PDFDocumentDataLoaderDecorator::readNameArrayFromDictionary(const PDFDictionary* dictionary, const char* key) const
{
if (dictionary->hasKey(key))
{
return readNameArray(dictionary->get(key));
}
return std::vector<QByteArray>();
}
bool PDFDocumentDataLoaderDecorator::readBooleanFromDictionary(const PDFDictionary* dictionary, const char* key, bool defaultValue) const
{
if (dictionary->hasKey(key))