jsonlddocumentprocessor.cpp

/*
   SPDX-FileCopyrightText: 2017-2021 Volker Krause <vkrause@kde.org>
 
   SPDX-License-Identifier: LGPL-2.0-or-later
*/
 
#include "jsonlddocumentprocessor.h"
#include "logging.h"
#include "stringutil.h"
 
#include <KItinerary/ExtractorResult>
 
#include <QJsonArray>
#include <QJsonDocument>
#include <QJsonObject>
 
using namespace KItinerary;
 
bool JsonLdDocumentProcessor::canHandleData(const QByteArray &encodedData, QStringView fileName) const
{
  return StringUtil::startsWithIgnoreSpace(encodedData, "[") ||
         StringUtil::startsWithIgnoreSpace(encodedData, "{") ||
         fileName.endsWith(QLatin1StringView(".json"), Qt::CaseInsensitive) ||
         fileName.endsWith(QLatin1StringView(".jsonld"), Qt::CaseInsensitive);
}
 
ExtractorDocumentNode JsonLdDocumentProcessor::createNodeFromData(const QByteArray &encodedData) const
{
    QJsonParseError error;
    const auto doc = QJsonDocument::fromJson(encodedData, &error);
    if (error.error != QJsonParseError::NoError) {
        qCDebug(Log) << error.errorString() << error.offset;
        return {};
    }
 
    QJsonArray data;
    if (doc.isObject()) {
        data.push_back(doc.object());
    } else if (doc.isArray()) {
        data = doc.array();
    } else {
        return {};
    }
 
    ExtractorDocumentNode node;
    node.setContent(data);
    return node;
}
 
void JsonLdDocumentProcessor::preExtract(ExtractorDocumentNode &node, [[maybe_unused]] const ExtractorEngine *engine) const
{
    // pass through JSON data, so the using code can apply post-processing to that
    node.addResult(node.content<QJsonArray>());
}