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181 lines
6.8 KiB
C++
181 lines
6.8 KiB
C++
/* This file is part of the KDE project
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Copyright (C) 2004 David Faure <faure@kde.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef TRASHIMPL_H
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#define TRASHIMPL_H
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#include <kio/jobclasses.h>
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#include <kconfig.h>
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#include <QDateTime>
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#include <QMap>
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#include <assert.h>
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/**
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* Implementation of all low-level operations done by kio_trash
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* The structure of the trash directory follows the freedesktop.org standard <TODO URL>
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*/
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class TrashImpl : public QObject
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{
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Q_OBJECT
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public:
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TrashImpl();
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/// Check the "home" trash directory
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/// This MUST be called before doing anything else
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bool init();
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/// Create info for a file to be trashed
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/// Returns trashId and fileId
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/// The caller is then responsible for actually trashing the file
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bool createInfo( const QString& origPath, int& trashId, QString& fileId );
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/// Delete info file for a file to be trashed
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/// Usually used for undoing what createInfo did if trashing failed
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bool deleteInfo( int trashId, const QString& fileId );
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/// Moving a file or directory into the trash. The ids come from createInfo.
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bool moveToTrash( const QString& origPath, int trashId, const QString& fileId );
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/// Moving a file or directory out of the trash. The ids come from createInfo.
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bool moveFromTrash( const QString& origPath, int trashId, const QString& fileId, const QString& relativePath );
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/// Copying a file or directory into the trash. The ids come from createInfo.
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bool copyToTrash( const QString& origPath, int trashId, const QString& fileId );
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/// Copying a file or directory out of the trash. The ids come from createInfo.
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bool copyFromTrash( const QString& origPath, int trashId, const QString& fileId, const QString& relativePath );
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/// Create a top-level trashed directory
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//bool mkdir( int trashId, const QString& fileId, int permissions );
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/// Get rid of a trashed file
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bool del( int trashId, const QString& fileId );
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/// Empty trash, i.e. delete all trashed files
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bool emptyTrash();
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/// Return true if the trash is empty
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bool isEmpty() const;
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struct TrashedFileInfo {
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int trashId; // for the url
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QString fileId; // for the url
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QString physicalPath; // for stat'ing etc.
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QString origPath; // from info file
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QDateTime deletionDate; // from info file
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};
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/// List trashed files
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typedef QList<TrashedFileInfo> TrashedFileInfoList;
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TrashedFileInfoList list();
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/// Return the info for a given trashed file
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bool infoForFile( int trashId, const QString& fileId, TrashedFileInfo& info );
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/// Return the physicalPath for a given trashed file - helper method which
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/// encapsulates the call to infoForFile. Don't use if you need more info from TrashedFileInfo.
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QString physicalPath( int trashId, const QString& fileId, const QString& relativePath );
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/// KIO error code
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int lastErrorCode() const { return m_lastErrorCode; }
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QString lastErrorMessage() const { return m_lastErrorMessage; }
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QStringList listDir( const QString& physicalPath );
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static KUrl makeURL( int trashId, const QString& fileId, const QString& relativePath );
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static bool parseURL( const KUrl& url, int& trashId, QString& fileId, QString& relativePath );
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typedef QMap<int, QString> TrashDirMap;
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/// @internal This method is for TestTrash only. Home trash is included (id 0).
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TrashDirMap trashDirectories() const;
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/// @internal This method is for TestTrash only. No entry with id 0.
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TrashDirMap topDirectories() const;
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Q_SIGNALS:
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void leaveModality();
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private:
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/// Helper method. Moves a file or directory using the appropriate method.
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bool move( const QString& src, const QString& dest );
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bool copy( const QString& src, const QString& dest );
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/// Helper method. Tries to call ::rename(src,dest) and does error handling.
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bool directRename( const QString& src, const QString& dest );
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void fileAdded();
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void fileRemoved();
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bool adaptTrashSize( const QString& origPath, int trashId );
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// Warning, returns error code, not a bool
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int testDir( const QString& name ) const;
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void error( int e, const QString& s );
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bool readInfoFile( const QString& infoPath, TrashedFileInfo& info, int trashId );
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QString infoPath( int trashId, const QString& fileId ) const;
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QString filesPath( int trashId, const QString& fileId ) const;
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/// Find the trash dir to use for a given file to delete, based on original path
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int findTrashDirectory( const QString& origPath );
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QString trashDirectoryPath( int trashId ) const;
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QString topDirectoryPath( int trashId ) const;
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bool synchronousDel( const QString& path, bool setLastErrorCode, bool isDir );
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void scanTrashDirectories() const;
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int idForTrashDirectory( const QString& trashDir ) const;
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bool initTrashDirectory( const QByteArray& trashDir_c ) const;
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bool checkTrashSubdirs( const QByteArray& trashDir_c ) const;
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QString trashForMountPoint( const QString& topdir, bool createIfNeeded ) const;
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static QString makeRelativePath( const QString& topdir, const QString& path );
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void enterLoop();
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private Q_SLOTS:
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void jobFinished(KJob *job);
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private:
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/// Last error code stored in class to simplify API.
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/// Note that this means almost no method can be const.
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int m_lastErrorCode;
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QString m_lastErrorMessage;
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enum { InitToBeDone, InitOK, InitError } m_initStatus;
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// A "trash directory" is a physical directory on disk,
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// e.g. $HOME/.local/share/Trash/$uid or /mnt/foo/.Trash/$uid
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// It has an id (number) and a path.
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// The home trash has id 0.
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mutable TrashDirMap m_trashDirectories; // id -> path of trash directory
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mutable TrashDirMap m_topDirectories; // id -> $topdir of partition
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dev_t m_homeDevice;
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mutable bool m_trashDirectoriesScanned;
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KConfig m_config;
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// We don't cache any data related to the trashed files.
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// Another kioslave could change that behind our feet.
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// If we want to start caching data - and avoiding some race conditions -,
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// we should turn this class into a kded module and use DCOP to talk to it
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// from the kioslave.
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};
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#endif
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