nativegrep.h

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// SPDX-FileCopyrightText: 2026 Anne Jan Brouwer
// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef SRC_NATIVEGREP_H_
#define SRC_NATIVEGREP_H_
 
#include <QList>
#include <QObject>
#include <QPair>
#include <QProcessEnvironment>
#include <QString>
#include <QStringList>
#include <atomic>
#include <memory>
 
class QRegularExpression;
class QThread;

class NativeGrep : public QObject {
  Q_OBJECT
 
public:
  explicit NativeGrep(QObject *parent = nullptr);

  static constexpr int kMaxMatchesPerEntry = 100;

  static constexpr int kMaxMatches = 10000;

  static constexpr qsizetype kMaxPreviewLength = 200;

  [[nodiscard]] static auto isMoreMarker(const QString &line) -> bool {
    return line.isEmpty();
  }

  [[nodiscard]] static auto
  isStoppedMarker(const QPair<QString, QStringList> &result) -> bool {
    return result.first.isEmpty();
  }

  ~NativeGrep() override;

  void search(const QString &pattern, bool caseInsensitive,
              const QString &gpgExe, const QString &storeDir,
              const QProcessEnvironment &env);

  void cancel();

  static auto matchFile(const QProcessEnvironment &env, const QString &gpgExe,
                        const QString &filePath, const QRegularExpression &rx,
                        const std::atomic_bool *cancel = nullptr)
      -> QStringList;
  static auto scanStore(const QProcessEnvironment &env, const QString &gpgExe,
                        const QString &storeDir, const QRegularExpression &rx,
                        const std::atomic_bool *cancel = nullptr)
      -> QList<QPair<QString, QStringList>>;
 
signals:
  void finished(const QList<QPair<QString, QStringList>> &results);
 
private:
  struct Worker {
    QThread *thread;
    std::shared_ptr<std::atomic_bool> cancel;
  };

  int m_seq = 0;
  QList<Worker> m_workers;
};
 
#endif // SRC_NATIVEGREP_H_