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https://github.com/qpdf/qpdf.git
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203 lines
4.8 KiB
C++
203 lines
4.8 KiB
C++
#include <qpdf/QPDFNameTreeObjectHelper.hh>
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#include <qpdf/NNTree.hh>
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namespace
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{
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class NameTreeDetails: public NNTreeDetails
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{
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public:
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std::string const&
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itemsKey() const override
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{
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static std::string k("/Names");
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return k;
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}
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bool
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keyValid(QPDFObjectHandle oh) const override
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{
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return oh.isString();
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}
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int
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compareKeys(QPDFObjectHandle a, QPDFObjectHandle b) const override
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{
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if (!(keyValid(a) && keyValid(b))) {
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// We don't call this without calling keyValid first
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throw std::logic_error("comparing invalid keys");
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}
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auto as = a.getUTF8Value();
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auto bs = b.getUTF8Value();
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return ((as < bs) ? -1 : (as > bs) ? 1 : 0);
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}
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};
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} // namespace
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static NameTreeDetails name_tree_details;
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QPDFNameTreeObjectHelper::~QPDFNameTreeObjectHelper() // NOLINT (modernize-use-equals-default)
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{
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// Must be explicit and not inline -- see QPDF_DLL_CLASS in README-maintainer. For this specific
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// class, see github issue #745.
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}
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QPDFNameTreeObjectHelper::Members::Members(QPDFObjectHandle& oh, QPDF& q, bool auto_repair) :
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impl(std::make_shared<NNTreeImpl>(name_tree_details, q, oh, auto_repair))
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{
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}
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QPDFNameTreeObjectHelper::QPDFNameTreeObjectHelper(QPDFObjectHandle oh, QPDF& q, bool auto_repair) :
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QPDFObjectHelper(oh),
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m(new Members(oh, q, auto_repair))
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{
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}
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QPDFNameTreeObjectHelper
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QPDFNameTreeObjectHelper::newEmpty(QPDF& qpdf, bool auto_repair)
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{
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return {qpdf.makeIndirectObject("<< /Names [] >>"_qpdf), qpdf, auto_repair};
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}
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QPDFNameTreeObjectHelper::iterator::iterator(std::shared_ptr<NNTreeIterator> const& i) :
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impl(i)
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{
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}
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bool
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QPDFNameTreeObjectHelper::iterator::valid() const
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{
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return impl->valid();
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}
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QPDFNameTreeObjectHelper::iterator&
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QPDFNameTreeObjectHelper::iterator::operator++()
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{
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++(*impl);
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updateIValue();
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return *this;
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}
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QPDFNameTreeObjectHelper::iterator&
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QPDFNameTreeObjectHelper::iterator::operator--()
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{
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--(*impl);
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updateIValue();
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return *this;
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}
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void
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QPDFNameTreeObjectHelper::iterator::updateIValue()
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{
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if (impl->valid()) {
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auto p = *impl;
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this->ivalue.first = p->first.getUTF8Value();
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this->ivalue.second = p->second;
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} else {
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this->ivalue.first = "";
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this->ivalue.second = QPDFObjectHandle();
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}
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}
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QPDFNameTreeObjectHelper::iterator::reference
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QPDFNameTreeObjectHelper::iterator::operator*()
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{
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updateIValue();
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return this->ivalue;
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}
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QPDFNameTreeObjectHelper::iterator::pointer
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QPDFNameTreeObjectHelper::iterator::operator->()
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{
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updateIValue();
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return &this->ivalue;
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}
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bool
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QPDFNameTreeObjectHelper::iterator::operator==(iterator const& other) const
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{
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return *(impl) == *(other.impl);
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}
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void
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QPDFNameTreeObjectHelper::iterator::insertAfter(std::string const& key, QPDFObjectHandle value)
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{
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impl->insertAfter(QPDFObjectHandle::newUnicodeString(key), value);
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updateIValue();
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}
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void
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QPDFNameTreeObjectHelper::iterator::remove()
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{
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impl->remove();
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updateIValue();
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}
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QPDFNameTreeObjectHelper::iterator
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QPDFNameTreeObjectHelper::begin() const
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{
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return {std::make_shared<NNTreeIterator>(m->impl->begin())};
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}
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QPDFNameTreeObjectHelper::iterator
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QPDFNameTreeObjectHelper::end() const
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{
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return {std::make_shared<NNTreeIterator>(m->impl->end())};
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}
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QPDFNameTreeObjectHelper::iterator
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QPDFNameTreeObjectHelper::last() const
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{
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return {std::make_shared<NNTreeIterator>(m->impl->last())};
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}
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QPDFNameTreeObjectHelper::iterator
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QPDFNameTreeObjectHelper::find(std::string const& key, bool return_prev_if_not_found)
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{
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auto i = m->impl->find(QPDFObjectHandle::newUnicodeString(key), return_prev_if_not_found);
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return {std::make_shared<NNTreeIterator>(i)};
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}
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QPDFNameTreeObjectHelper::iterator
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QPDFNameTreeObjectHelper::insert(std::string const& key, QPDFObjectHandle value)
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{
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auto i = m->impl->insert(QPDFObjectHandle::newUnicodeString(key), value);
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return {std::make_shared<NNTreeIterator>(i)};
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}
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bool
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QPDFNameTreeObjectHelper::remove(std::string const& key, QPDFObjectHandle* value)
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{
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return m->impl->remove(QPDFObjectHandle::newUnicodeString(key), value);
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}
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bool
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QPDFNameTreeObjectHelper::hasName(std::string const& name)
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{
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auto i = find(name);
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return (i != end());
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}
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bool
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QPDFNameTreeObjectHelper::findObject(std::string const& name, QPDFObjectHandle& oh)
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{
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auto i = find(name);
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if (i == end()) {
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return false;
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}
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oh = i->second;
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return true;
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}
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void
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QPDFNameTreeObjectHelper::setSplitThreshold(int t)
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{
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m->impl->setSplitThreshold(t);
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}
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std::map<std::string, QPDFObjectHandle>
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QPDFNameTreeObjectHelper::getAsMap() const
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{
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std::map<std::string, QPDFObjectHandle> result;
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result.insert(begin(), end());
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return result;
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}
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