QPDF_Dictionary.cc
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#include <qpdf/QPDF_Dictionary.hh>
#include <qpdf/QPDF_Name.hh>
#include <qpdf/QPDF_Null.hh>
QPDF_Dictionary::QPDF_Dictionary(
std::map<std::string, QPDFObjectHandle> const& items) :
items(items)
{
}
std::shared_ptr<QPDFObject>
QPDF_Dictionary::create(std::map<std::string, QPDFObjectHandle> const& items)
{
return do_create(new QPDF_Dictionary(items));
}
std::shared_ptr<QPDFObject>
QPDF_Dictionary::shallowCopy()
{
return create(items);
}
void
QPDF_Dictionary::releaseResolved()
{
for (auto& iter: this->items) {
QPDFObjectHandle::ReleaseResolver::releaseResolved(iter.second);
}
}
std::string
QPDF_Dictionary::unparse()
{
std::string result = "<< ";
for (auto& iter: this->items) {
if (!iter.second.isNull()) {
result += QPDF_Name::normalizeName(iter.first) + " " +
iter.second.unparse() + " ";
}
}
result += ">>";
return result;
}
JSON
QPDF_Dictionary::getJSON(int json_version)
{
JSON j = JSON::makeDictionary();
for (auto& iter: this->items) {
if (!iter.second.isNull()) {
std::string key =
(json_version == 1 ? QPDF_Name::normalizeName(iter.first)
: iter.first);
j.addDictionaryMember(key, iter.second.getJSON(json_version));
}
}
return j;
}
QPDFObject::object_type_e
QPDF_Dictionary::getTypeCode() const
{
return QPDFObject::ot_dictionary;
}
char const*
QPDF_Dictionary::getTypeName() const
{
return "dictionary";
}
bool
QPDF_Dictionary::hasKey(std::string const& key)
{
return ((this->items.count(key) > 0) && (!this->items[key].isNull()));
}
QPDFObjectHandle
QPDF_Dictionary::getKey(std::string const& key)
{
// PDF spec says fetching a non-existent key from a dictionary
// returns the null object.
auto item = this->items.find(key);
if (item != this->items.end()) {
// May be a null object
return item->second;
} else {
QPDFObjectHandle null = QPDFObjectHandle::newNull();
QPDF* qpdf = 0;
std::string description;
if (getDescription(qpdf, description)) {
null.setObjectDescription(
qpdf, description + " -> dictionary key " + key);
}
return null;
}
}
std::set<std::string>
QPDF_Dictionary::getKeys()
{
std::set<std::string> result;
for (auto& iter: this->items) {
if (!iter.second.isNull()) {
result.insert(iter.first);
}
}
return result;
}
std::map<std::string, QPDFObjectHandle> const&
QPDF_Dictionary::getAsMap() const
{
return this->items;
}
void
QPDF_Dictionary::replaceKey(std::string const& key, QPDFObjectHandle value)
{
if (value.isNull()) {
// The PDF spec doesn't distinguish between keys with null
// values and missing keys.
removeKey(key);
} else {
// add or replace value
this->items[key] = value;
}
}
void
QPDF_Dictionary::removeKey(std::string const& key)
{
// no-op if key does not exist
this->items.erase(key);
}