Revision control
++ // Copyright (C) 2018 Intel Corporation.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include "jsonconverter.h"
++
++ #include <QFile>
++ #include <QJsonArray>
++ #include <QJsonDocument>
++ #include <QJsonObject>
++ #include <QJsonValue>
++
++ using namespace Qt::StringLiterals;
++
++ static JsonConverter jsonConverter;
++
++ static const char jsonOptionHelp[] = "compact=no|yes Use compact JSON form.\n";
++
++ static QJsonDocument convertFromVariant(const QVariant &v)
++ {
++ QJsonDocument doc = QJsonDocument::fromVariant(v);
++ if (!doc.isObject() && !doc.isArray())
++ qFatal("Could not convert contents to JSON.");
++ return doc;
++ }
++
++ QString JsonConverter::name() const
++ {
++ return "json"_L1;
++ }
++
++ Converter::Directions JsonConverter::directions() const
++ {
++ return Direction::InOut;
++ }
++
++ const char *JsonConverter::optionsHelp() const
++ {
++ return jsonOptionHelp;
++ }
++
++ bool JsonConverter::probeFile(QIODevice *f) const
++ {
++ if (QFile *file = qobject_cast<QFile *>(f)) {
++ if (file->fileName().endsWith(".json"_L1))
++ return true;
++ }
++
++ if (f->isReadable()) {
++ QByteArray ba = f->peek(1);
++ return ba == "{" || ba == "[";
++ }
++ return false;
++ }
++
++ QVariant JsonConverter::loadFile(QIODevice *f, const Converter *&outputConverter) const
++ {
++ if (!outputConverter)
++ outputConverter = this;
++
++ QJsonParseError error;
++ QJsonDocument doc;
++ if (auto file = qobject_cast<QFile *>(f)) {
++ const char *ptr = reinterpret_cast<char *>(file->map(0, file->size()));
++ if (ptr)
++ doc = QJsonDocument::fromJson(QByteArray::fromRawData(ptr, file->size()), &error);
++ }
++
++ if (doc.isNull())
++ doc = QJsonDocument::fromJson(f->readAll(), &error);
++ if (error.error) {
++ qFatal("Could not parse JSON content: offset %d: %s",
++ error.offset, qPrintable(error.errorString()));
++ }
++ if (isNull(outputConverter))
++ return QVariant();
++ return doc.toVariant();
++ }
++
++ void JsonConverter::saveFile(QIODevice *f, const QVariant &contents,
++ const QStringList &options) const
++ {
++ QJsonDocument::JsonFormat format = QJsonDocument::Indented;
++ for (const QString &s : options) {
++ if (s == "compact=no"_L1) {
++ format = QJsonDocument::Indented;
++ } else if (s == "compact=yes"_L1) {
++ format = QJsonDocument::Compact;
++ } else {
++ qFatal("Unknown option '%s' to JSON output. Valid options are:\n%s",
++ qPrintable(s), jsonOptionHelp);
++ }
++ }
++
++ f->write(convertFromVariant(contents).toJson(format));
++ }