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Diffstat (limited to 'kioslave/trash/trashimpl.h')
-rw-r--r-- | kioslave/trash/trashimpl.h | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/kioslave/trash/trashimpl.h b/kioslave/trash/trashimpl.h new file mode 100644 index 000000000..2b16ec67e --- /dev/null +++ b/kioslave/trash/trashimpl.h @@ -0,0 +1,182 @@ +/* This file is part of the KDE project + Copyright (C) 2004 David Faure <faure@kde.org> + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. +*/ + +#ifndef TRASHIMPL_H +#define TRASHIMPL_H + +#include <kio/jobclasses.h> +#include <ksimpleconfig.h> + +#include <qstring.h> +#include <qdatetime.h> +#include <qmap.h> +#include <qvaluelist.h> +#include <qstrlist.h> +#include <assert.h> + +/** + * Implementation of all low-level operations done by kio_trash + * The structure of the trash directory follows the freedesktop.org standard <TODO URL> + */ +class TrashImpl : public QObject +{ + Q_OBJECT +public: + TrashImpl(); + + /// Check the "home" trash directory + /// This MUST be called before doing anything else + bool init(); + + /// Create info for a file to be trashed + /// Returns trashId and fileId + /// The caller is then responsible for actually trashing the file + bool createInfo( const QString& origPath, int& trashId, QString& fileId ); + + /// Delete info file for a file to be trashed + /// Usually used for undoing what createInfo did if trashing failed + bool deleteInfo( int trashId, const QString& fileId ); + + /// Moving a file or directory into the trash. The ids come from createInfo. + bool moveToTrash( const QString& origPath, int trashId, const QString& fileId ); + + /// Moving a file or directory out of the trash. The ids come from createInfo. + bool moveFromTrash( const QString& origPath, int trashId, const QString& fileId, const QString& relativePath ); + + /// Copying a file or directory into the trash. The ids come from createInfo. + bool copyToTrash( const QString& origPath, int trashId, const QString& fileId ); + + /// Copying a file or directory out of the trash. The ids come from createInfo. + bool copyFromTrash( const QString& origPath, int trashId, const QString& fileId, const QString& relativePath ); + + /// Create a top-level trashed directory + //bool mkdir( int trashId, const QString& fileId, int permissions ); + + /// Get rid of a trashed file + bool del( int trashId, const QString& fileId ); + + /// Empty trash, i.e. delete all trashed files + bool emptyTrash(); + + /// Return true if the trash is empty + bool isEmpty() const; + + struct TrashedFileInfo { + int trashId; // for the url + QString fileId; // for the url + QString physicalPath; // for stat'ing etc. + QString origPath; // from info file + QDateTime deletionDate; // from info file + }; + /// List trashed files + typedef QValueList<TrashedFileInfo> TrashedFileInfoList; + TrashedFileInfoList list(); + + /// Return the info for a given trashed file + bool infoForFile( int trashId, const QString& fileId, TrashedFileInfo& info ); + + /// Return the physicalPath for a given trashed file - helper method which + /// encapsulates the call to infoForFile. Don't use if you need more info from TrashedFileInfo. + QString physicalPath( int trashId, const QString& fileId, const QString& relativePath ); + + /// Move data from the old trash system to the new one + void migrateOldTrash(); + + /// KIO error code + int lastErrorCode() const { return m_lastErrorCode; } + QString lastErrorMessage() const { return m_lastErrorMessage; } + + QStrList listDir( const QString& physicalPath ); + + static KURL makeURL( int trashId, const QString& fileId, const QString& relativePath ); + static bool parseURL( const KURL& url, int& trashId, QString& fileId, QString& relativePath ); + + typedef QMap<int, QString> TrashDirMap; + /// @internal This method is for TestTrash only. Home trash is included (id 0). + TrashDirMap trashDirectories() const; + /// @internal This method is for TestTrash only. No entry with id 0. + TrashDirMap topDirectories() const; + +private: + /// Helper method. Moves a file or directory using the appropriate method. + bool move( const QString& src, const QString& dest ); + bool copy( const QString& src, const QString& dest ); + /// Helper method. Tries to call ::rename(src,dest) and does error handling. + bool directRename( const QString& src, const QString& dest ); + + void fileAdded(); + void fileRemoved(); + + // Warning, returns error code, not a bool + int testDir( const QString& name ) const; + void error( int e, const QString& s ); + + bool readInfoFile( const QString& infoPath, TrashedFileInfo& info, int trashId ); + + QString infoPath( int trashId, const QString& fileId ) const; + QString filesPath( int trashId, const QString& fileId ) const; + + /// Find the trash dir to use for a given file to delete, based on original path + int findTrashDirectory( const QString& origPath ); + + QString trashDirectoryPath( int trashId ) const; + QString topDirectoryPath( int trashId ) const; + + bool synchronousDel( const QString& path, bool setLastErrorCode, bool isDir ); + + void scanTrashDirectories() const; + + int idForTrashDirectory( const QString& trashDir ) const; + bool initTrashDirectory( const QCString& trashDir_c ) const; + bool checkTrashSubdirs( const QCString& trashDir_c ) const; + QString trashForMountPoint( const QString& topdir, bool createIfNeeded ) const; + static QString makeRelativePath( const QString& topdir, const QString& path ); + +private slots: + void jobFinished(KIO::Job *job); + +private: + /// Last error code stored in class to simplify API. + /// Note that this means almost no method can be const. + int m_lastErrorCode; + QString m_lastErrorMessage; + + enum { InitToBeDone, InitOK, InitError } m_initStatus; + + // A "trash directory" is a physical directory on disk, + // e.g. $HOME/.local/share/Trash/$uid or /mnt/foo/.Trash/$uid + // It has an id (number) and a path. + // The home trash has id 0. + mutable TrashDirMap m_trashDirectories; // id -> path of trash directory + mutable TrashDirMap m_topDirectories; // id -> $topdir of partition + mutable int m_lastId; + dev_t m_homeDevice; + mutable bool m_trashDirectoriesScanned; + int m_mibEnum; + + KSimpleConfig m_config; + + // We don't cache any data related to the trashed files. + // Another kioslave could change that behind our feet. + // If we want to start caching data - and avoiding some race conditions -, + // we should turn this class into a kded module and use DCOP to talk to it + // from the kioslave. +}; + +#endif |