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64ce0cd7a2
Based on Oliviers suggestions the file read routine now reuses one buffer to read the entire file. Other cleanups.
133 lines
4.1 KiB
C++
133 lines
4.1 KiB
C++
/*
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* Copyright (C) by Olivier Goffart <ogoffart@owncloud.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#pragma once
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#include "config.h"
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#include <QString>
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#include <ctime>
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#include <QCryptographicHash>
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#include <owncloudlib.h>
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class QFile;
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class QFileInfo;
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namespace OCC {
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/**
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* This file contains file system helper.
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*/
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namespace FileSystem {
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/** compare two files with given filename and return true if they have the same content */
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bool fileEquals(const QString &fn1, const QString &fn2);
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/** Mark the file as hidden (only has effects on windows) */
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void OWNCLOUDSYNC_EXPORT setFileHidden(const QString& filename, bool hidden);
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/** Get the mtime for a filepath.
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*
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* Use this over QFileInfo::lastModified() to avoid timezone related bugs. See
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* owncloud/core#9781 for details.
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*/
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time_t OWNCLOUDSYNC_EXPORT getModTime(const QString& filename);
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bool setModTime(const QString &filename, time_t modTime);
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/** Get the size for a file.
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*
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* Use this over QFileInfo::size() to avoid bugs with lnk files on Windows.
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* See https://bugreports.qt.io/browse/QTBUG-24831.
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*/
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qint64 OWNCLOUDSYNC_EXPORT getSize(const QString& filename);
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/** Checks whether a file exists.
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*
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* Use this over QFileInfo::exists() and QFile::exists() to avoid bugs with lnk
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* files, see above.
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*/
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bool OWNCLOUDSYNC_EXPORT fileExists(const QString& filename);
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/**
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* Rename the file \a originFileName to \a destinationFileName.
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*
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* It behaves as QFile::rename() but handles .lnk files correctly on Windows.
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*/
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bool OWNCLOUDSYNC_EXPORT rename(const QString& originFileName,
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const QString& destinationFileName,
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QString* errorString = NULL);
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/**
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* Returns true if the file's mtime or size are not what is expected.
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* Nonexisting files are covered through mtime: they have an mtime of -1.
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*/
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bool fileChanged(const QString& fileName,
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qint64 previousSize,
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time_t previousMtime);
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/**
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* Like !fileChanged() but with verbose logging if the file *did* change.
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*/
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bool verifyFileUnchanged(const QString& fileName,
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qint64 previousSize,
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time_t previousMtime);
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/**
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* Rename the file \a originFileName to \a destinationFileName, and
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* overwrite the destination if it already exists - as long as the
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* destination file has the expected \a destinationSize and
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* \a destinationMtime.
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* If the destination file does not exist, the given size and mtime are
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* ignored.
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*/
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bool renameReplace(const QString &originFileName,
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const QString &destinationFileName,
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qint64 destinationSize,
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time_t destinationMtime,
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QString *errorString);
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/**
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* Rename the file \a originFileName to \a destinationFileName, and
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* overwrite the destination if it already exists - without extra checks.
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*/
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bool uncheckedRenameReplace(const QString &originFileName,
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const QString &destinationFileName,
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QString *errorString);
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/**
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* Replacement for QFile::open(ReadOnly) followed by a seek().
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* This version sets a more permissive sharing mode on Windows.
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*
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* Warning: The resuting file may have an empty fileName and be unsuitable for use
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* with QFileInfo! Calling seek() on the QFile with >32bit signed values will fail!
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*/
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bool openAndSeekFileSharedRead(QFile* file, QString* error, qint64 seek);
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#ifdef Q_OS_WIN
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/**
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* Returns the file system used at the given path.
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*/
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QString fileSystemForPath(const QString & path);
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#endif
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QByteArray calcMd5( const QString& fileName );
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QByteArray calcSha1( const QString& fileName );
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#ifdef ZLIB_FOUND
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QByteArray calcAdler32( const QString& fileName );
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#endif
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}}
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