File indexing completed on 2024-04-21 04:01:01

 /*
     This file is part of the syndication library
     SPDX-FileCopyrightText: 2006 Frank Osterfeld <osterfeld@kde.org>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #include "document.h"
 #include "dublincore.h"
 #include "image.h"
 #include "item.h"
 #include "model.h"
 #include "model_p.h"
 #include "resource.h"
 #include "rssvocab.h"
 #include "sequence.h"
 #include "statement.h"
 #include "syndicationinfo.h"
 #include "textinput.h"
 
 #include <documentvisitor.h>
 #include <tools.h>
 
 #include <QList>
 #include <QString>
 #include <QStringList>
 #include <QVector>
 
 #include <algorithm>
 
 namespace Syndication
 {
 namespace RDF
 {
 class SYNDICATION_NO_EXPORT Document::Private
 {
 public:
     Private()
         : itemTitleContainsMarkup(false)
         , itemTitlesGuessed(false)
         , itemDescriptionContainsMarkup(false)
         , itemDescGuessed(false)
     {
     }
     mutable bool itemTitleContainsMarkup;
     mutable bool itemTitlesGuessed;
     mutable bool itemDescriptionContainsMarkup;
     mutable bool itemDescGuessed;
     QSharedPointer<Model::ModelPrivate> modelPrivate;
 };
 
 Document::Document()
     : Syndication::SpecificDocument()
     , ResourceWrapper()
     , d(new Private)
 {
     d->modelPrivate = resource()->model().d;
 }
 
 Document::Document(ResourcePtr resource)
     : Syndication::SpecificDocument()
     , ResourceWrapper(resource)
     , d(new Private)
 {
     d->modelPrivate = resource->model().d;
 }
 
 Document::Document(const Document &other)
     : SpecificDocument(other)
     , ResourceWrapper(other)
     , d(new Private)
 {
     *d = *(other.d);
 }
 
 Document::~Document() = default;
 
 bool Document::operator==(const Document &other) const
 {
     return ResourceWrapper::operator==(other);
 }
 
 Document &Document::operator=(const Document &other)
 {
     ResourceWrapper::operator=(other);
     *d = *(other.d);
 
     return *this;
 }
 
 bool Document::accept(DocumentVisitor *visitor)
 {
     return visitor->visitRDFDocument(this);
 }
 
 bool Document::isValid() const
 {
     return !isNull();
 }
 
 QString Document::title() const
 {
     const QString str = resource()->property(RSSVocab::self()->title())->asString();
     return normalize(str);
 }
 
 QString Document::description() const
 {
     const QString str = resource()->property(RSSVocab::self()->description())->asString();
     return normalize(str);
 }
 
 QString Document::link() const
 {
     return resource()->property(RSSVocab::self()->link())->asString();
 }
 
 DublinCore Document::dc() const
 {
     return DublinCore(resource());
 }
 
 SyndicationInfo Document::syn() const
 {
     return SyndicationInfo(resource());
 }
 
 struct SortItem {
     Item item;
     int index;
 };
 
 struct LessThanByIndex {
     bool operator()(const SortItem &lhs, const SortItem &rhs) const
     {
         return lhs.index < rhs.index;
     }
 };
 
 static QList<Item> sortListToMatchSequence(QList<Item> items, const QStringList &uriSequence)
 {
     QVector<SortItem> toSort;
     toSort.reserve(items.size());
     for (const Item &i : items) {
         SortItem item;
         item.item = i;
         item.index = uriSequence.indexOf(i.resource()->uri());
         toSort.append(item);
     }
     std::sort(toSort.begin(), toSort.end(), LessThanByIndex());
 
     int i = 0;
     for (const SortItem &sortItem : std::as_const(toSort)) {
         items[i] = sortItem.item;
         i++;
     }
 
     return items;
 }
 
 struct UriLessThan {
     bool operator()(const RDF::ResourcePtr &lhs, const RDF::ResourcePtr &rhs) const
     {
         return lhs->uri() < rhs->uri();
     }
 };
 
 QList<Item> Document::items() const
 {
     QList<ResourcePtr> items = resource()->model().resourcesWithType(RSSVocab::self()->item());
     // if there is no sequence, ensure sorting by URI to have a defined and deterministic order
     // important for unit tests
     std::sort(items.begin(), items.end(), UriLessThan());
 
     DocumentPtr doccpy(new Document(*this));
 
     QList<Item> list;
     list.reserve(items.count());
 
     for (const ResourcePtr &i : std::as_const(items)) {
         list.append(Item(i, doccpy));
     }
 
     if (resource()->hasProperty(RSSVocab::self()->items())) {
         NodePtr n = resource()->property(RSSVocab::self()->items())->object();
         if (n->isSequence()) {
             const SequencePtr seq = n.staticCast<Sequence>();
 
             const QList<NodePtr> seqItems = seq->items();
 
             QStringList uriSequence;
             uriSequence.reserve(seqItems.size());
 
             for (const NodePtr &i : seqItems) {
                 if (i->isResource()) {
                     uriSequence.append(i.staticCast<Resource>()->uri());
                 }
             }
             list = sortListToMatchSequence(list, uriSequence);
         }
     }
 
     return list;
 }
 
 Image Document::image() const
 {
     ResourcePtr img = resource()->property(RSSVocab::self()->image())->asResource();
 
     return img ? Image(img) : Image();
 }
 
 TextInput Document::textInput() const
 {
     ResourcePtr ti = resource()->property(RSSVocab::self()->textinput())->asResource();
 
     return ti ? TextInput(ti) : TextInput();
 }
 
 void Document::getItemTitleFormatInfo(bool *containsMarkup) const
 {
     if (!d->itemTitlesGuessed) {
         QString titles;
         QList<Item> litems = items();
 
         if (litems.isEmpty()) {
             d->itemTitlesGuessed = true;
             return;
         }
 
         const int nmax = std::min<int>(litems.size(), 10); // we check a maximum of 10 items
         int i = 0;
 
         for (const auto &item : litems) {
             if (i++ >= nmax) {
                 break;
             }
             titles += item.originalTitle();
         }
 
         d->itemTitleContainsMarkup = stringContainsMarkup(titles);
         d->itemTitlesGuessed = true;
     }
     if (containsMarkup != nullptr) {
         *containsMarkup = d->itemTitleContainsMarkup;
     }
 }
 
 void Document::getItemDescriptionFormatInfo(bool *containsMarkup) const
 {
     if (!d->itemDescGuessed) {
         QString desc;
         QList<Item> litems = items();
 
         if (litems.isEmpty()) {
             d->itemDescGuessed = true;
             return;
         }
 
         const int nmax = std::min<int>(litems.size(), 10); // we check a maximum of 10 items
         int i = 0;
 
         for (const auto &item : litems) {
             if (i++ >= nmax) {
                 break;
             }
             desc += item.originalDescription();
         }
 
         d->itemDescriptionContainsMarkup = stringContainsMarkup(desc);
         d->itemDescGuessed = true;
     }
 
     if (containsMarkup != nullptr) {
         *containsMarkup = d->itemDescriptionContainsMarkup;
     }
 }
 
 QString Document::debugInfo() const
 {
     QString info;
     info += QLatin1String("### Document: ###################\n");
     info += QLatin1String("title: #") + title() + QLatin1String("#\n");
     info += QLatin1String("link: #") + link() + QLatin1String("#\n");
     info += QLatin1String("description: #") + description() + QLatin1String("#\n");
     info += dc().debugInfo();
     info += syn().debugInfo();
     Image img = image();
     if (!img.resource() == 0L) {
         info += img.debugInfo();
     }
     TextInput input = textInput();
     if (!input.isNull()) {
         info += input.debugInfo();
     }
 
     const QList<Item> itlist = items();
     for (const auto &item : itlist) {
         info += item.debugInfo();
     }
 
     info += QLatin1String("### Document end ################\n");
     return info;
 }
 
 } // namespace RDF
 } // namespace Syndication