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/*
SPDX-FileCopyrightText: 2021 Igor Kushnir <igorkuo@gmail.com>
SPDX-License-Identifier: LGPL-2.0-or-later
*/
#ifndef KDEVPLATFORM_SOURCEFORMATTERCONFIG_H
#define KDEVPLATFORM_SOURCEFORMATTERCONFIG_H
#include "debug.h"
#include <KConfigGroup>
#include <QMimeType>
#include <QString>
#include <QStringView>
#include <utility>
namespace KDevelop {
namespace SourceFormatter {
class ConfigForMimeType
{
public:
explicit ConfigForMimeType(const KConfigGroup& sourceFormatterConfig, const QMimeType& mimeType)
: ConfigForMimeType(sourceFormatterConfig, mimeType.name())
{
}
explicit ConfigForMimeType(const KConfigGroup& sourceFormatterConfig, const QString& mimeTypeName);
bool isValid() const
{
return m_formatterEndPos != 0;
}
QStringView formatterName() const
{
Q_ASSERT(isValid());
return QStringView{m_entry.constData(), m_formatterEndPos};
}
QStringView styleName() const
{
Q_ASSERT(isValid());
return QStringView{m_entry}.sliced(stylePos());
}
QString takeStyleName() &&
{
Q_ASSERT(isValid());
// the order of the following statements is important
m_entry.remove(0, stylePos());
m_formatterEndPos = 0;
Q_ASSERT(!isValid());
return std::move(m_entry);
}
template<class Style>
static void writeEntry(KConfigGroup& sourceFormatterConfig, const QMimeType& mimeType, const QString& formatterName,
const Style* style)
{
if (style) {
QString entry = formatterName + delimiter + style->name();
sourceFormatterConfig.writeEntry(mimeType.name(), std::move(entry));
} else {
sourceFormatterConfig.deleteEntry(mimeType.name());
}
}
private:
static constexpr QLatin1String delimiter{"||", 2};
qsizetype stylePos() const
{
return m_formatterEndPos + delimiter.size();
}
QString m_entry;
qsizetype m_formatterEndPos = 0;
};
inline ConfigForMimeType::ConfigForMimeType(const KConfigGroup& sourceFormatterConfig, const QString& mimeTypeName)
{
m_entry = sourceFormatterConfig.readEntry(mimeTypeName, QString{});
if (m_entry.isEmpty()) {
Q_ASSERT(!isValid());
return;
}
m_formatterEndPos = m_entry.indexOf(delimiter);
if (m_formatterEndPos <= 0 || stylePos() >= m_entry.size()) {
qCWarning(SHELL) << "Broken formatting entry for mime type" << mimeTypeName << ":" << m_entry;
m_formatterEndPos = 0;
Q_ASSERT(!isValid());
return;
}
Q_ASSERT(isValid());
}
}
}
#endif // KDEVPLATFORM_SOURCEFORMATTERCONFIG_H
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