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// 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));
}
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