diff options
Diffstat (limited to 'src/corelib/io/qfileinfo.cpp')
| -rw-r--r-- | src/corelib/io/qfileinfo.cpp | 341 |
1 files changed, 179 insertions, 162 deletions
diff --git a/src/corelib/io/qfileinfo.cpp b/src/corelib/io/qfileinfo.cpp index 907574b6dd..26078a6c71 100644 --- a/src/corelib/io/qfileinfo.cpp +++ b/src/corelib/io/qfileinfo.cpp @@ -42,6 +42,7 @@ #include "qglobal.h" #include "qdir.h" #include "qfileinfo_p.h" +#include "qdebug.h" QT_BEGIN_NAMESPACE @@ -185,17 +186,25 @@ uint QFileInfoPrivate::getFileFlags(QAbstractFileEngine::FileFlags request) cons QDateTime &QFileInfoPrivate::getFileTime(QAbstractFileEngine::FileTime request) const { Q_ASSERT(fileEngine); // should never be called when using the native FS - if (fileTimes.size() != 3) - fileTimes.resize(3); if (!cache_enabled) clearFlags(); - uint cf; - if (request == QAbstractFileEngine::CreationTime) - cf = CachedCTime; - else if (request == QAbstractFileEngine::ModificationTime) - cf = CachedMTime; - else + + uint cf = 0; + switch (request) { + case QAbstractFileEngine::AccessTime: cf = CachedATime; + break; + case QAbstractFileEngine::BirthTime: + cf = CachedBTime; + break; + case QAbstractFileEngine::MetadataChangeTime: + cf = CachedMCTime; + break; + case QAbstractFileEngine::ModificationTime: + cf = CachedMTime; + break; + } + if (!getCachedFlag(cf)) { fileTimes[request] = fileEngine->fileTime(request); setCachedFlag(cf); @@ -262,8 +271,8 @@ QDateTime &QFileInfoPrivate::getFileTime(QAbstractFileEngine::FileTime request) info objects, just append one to the file name given to the constructors or setFile(). - The file's dates are returned by created(), lastModified() and - lastRead(). Information about the file's access permissions is + The file's dates are returned by created(), lastModified(), lastRead() and + fileTime(). Information about the file's access permissions is obtained with isReadable(), isWritable() and isExecutable(). The file's ownership is available from owner(), ownerId(), group() and groupId(). You can examine a file's permissions and ownership in a @@ -582,9 +591,6 @@ QString QFileInfo::absolutePath() const if (d->isDefaultConstructed) { return QLatin1String(""); - } else if (d->fileEntry.isEmpty()) { - qWarning("QFileInfo::absolutePath: Constructed with empty filename"); - return QLatin1String(""); } return d->getFileName(QAbstractFileEngine::AbsolutePathName); } @@ -904,14 +910,10 @@ QDir QFileInfo::absoluteDir() const bool QFileInfo::isReadable() const { Q_D(const QFileInfo); - if (d->isDefaultConstructed) - return false; - if (d->fileEngine == 0) { - if (!d->cache_enabled || !d->metaData.hasFlags(QFileSystemMetaData::UserReadPermission)) - QFileSystemEngine::fillMetaData(d->fileEntry, d->metaData, QFileSystemMetaData::UserReadPermission); - return (d->metaData.permissions() & QFile::ReadUser) != 0; - } - return d->getFileFlags(QAbstractFileEngine::ReadUserPerm); + return d->checkAttribute<bool>( + QFileSystemMetaData::UserReadPermission, + [d]() { return (d->metaData.permissions() & QFile::ReadUser) != 0; }, + [d]() { return d->getFileFlags(QAbstractFileEngine::ReadUserPerm); }); } /*! @@ -925,14 +927,10 @@ bool QFileInfo::isReadable() const bool QFileInfo::isWritable() const { Q_D(const QFileInfo); - if (d->isDefaultConstructed) - return false; - if (d->fileEngine == 0) { - if (!d->cache_enabled || !d->metaData.hasFlags(QFileSystemMetaData::UserWritePermission)) - QFileSystemEngine::fillMetaData(d->fileEntry, d->metaData, QFileSystemMetaData::UserWritePermission); - return (d->metaData.permissions() & QFile::WriteUser) != 0; - } - return d->getFileFlags(QAbstractFileEngine::WriteUserPerm); + return d->checkAttribute<bool>( + QFileSystemMetaData::UserWritePermission, + [d]() { return (d->metaData.permissions() & QFile::WriteUser) != 0; }, + [d]() { return d->getFileFlags(QAbstractFileEngine::WriteUserPerm); }); } /*! @@ -943,14 +941,10 @@ bool QFileInfo::isWritable() const bool QFileInfo::isExecutable() const { Q_D(const QFileInfo); - if (d->isDefaultConstructed) - return false; - if (d->fileEngine == 0) { - if (!d->cache_enabled || !d->metaData.hasFlags(QFileSystemMetaData::UserExecutePermission)) - QFileSystemEngine::fillMetaData(d->fileEntry, d->metaData, QFileSystemMetaData::UserExecutePermission); - return (d->metaData.permissions() & QFile::ExeUser) != 0; - } - return d->getFileFlags(QAbstractFileEngine::ExeUserPerm); + return d->checkAttribute<bool>( + QFileSystemMetaData::UserExecutePermission, + [d]() { return (d->metaData.permissions() & QFile::ExeUser) != 0; }, + [d]() { return d->getFileFlags(QAbstractFileEngine::ExeUserPerm); }); } /*! @@ -962,14 +956,10 @@ bool QFileInfo::isExecutable() const bool QFileInfo::isHidden() const { Q_D(const QFileInfo); - if (d->isDefaultConstructed) - return false; - if (d->fileEngine == 0) { - if (!d->cache_enabled || !d->metaData.hasFlags(QFileSystemMetaData::HiddenAttribute)) - QFileSystemEngine::fillMetaData(d->fileEntry, d->metaData, QFileSystemMetaData::HiddenAttribute); - return d->metaData.isHidden(); - } - return d->getFileFlags(QAbstractFileEngine::HiddenFlag); + return d->checkAttribute<bool>( + QFileSystemMetaData::HiddenAttribute, + [d]() { return d->metaData.isHidden(); }, + [d]() { return d->getFileFlags(QAbstractFileEngine::HiddenFlag); }); } /*! @@ -1005,14 +995,10 @@ bool QFileInfo::isNativePath() const bool QFileInfo::isFile() const { Q_D(const QFileInfo); - if (d->isDefaultConstructed) - return false; - if (d->fileEngine == 0) { - if (!d->cache_enabled || !d->metaData.hasFlags(QFileSystemMetaData::FileType)) - QFileSystemEngine::fillMetaData(d->fileEntry, d->metaData, QFileSystemMetaData::FileType); - return d->metaData.isFile(); - } - return d->getFileFlags(QAbstractFileEngine::FileType); + return d->checkAttribute<bool>( + QFileSystemMetaData::FileType, + [d]() { return d->metaData.isFile(); }, + [d]() { return d->getFileFlags(QAbstractFileEngine::FileType); }); } /*! @@ -1024,14 +1010,10 @@ bool QFileInfo::isFile() const bool QFileInfo::isDir() const { Q_D(const QFileInfo); - if (d->isDefaultConstructed) - return false; - if (d->fileEngine == 0) { - if (!d->cache_enabled || !d->metaData.hasFlags(QFileSystemMetaData::DirectoryType)) - QFileSystemEngine::fillMetaData(d->fileEntry, d->metaData, QFileSystemMetaData::DirectoryType); - return d->metaData.isDirectory(); - } - return d->getFileFlags(QAbstractFileEngine::DirectoryType); + return d->checkAttribute<bool>( + QFileSystemMetaData::DirectoryType, + [d]() { return d->metaData.isDirectory(); }, + [d]() { return d->getFileFlags(QAbstractFileEngine::DirectoryType); }); } @@ -1045,14 +1027,10 @@ bool QFileInfo::isDir() const bool QFileInfo::isBundle() const { Q_D(const QFileInfo); - if (d->isDefaultConstructed) - return false; - if (d->fileEngine == 0) { - if (!d->cache_enabled || !d->metaData.hasFlags(QFileSystemMetaData::BundleType)) - QFileSystemEngine::fillMetaData(d->fileEntry, d->metaData, QFileSystemMetaData::BundleType); - return d->metaData.isBundle(); - } - return d->getFileFlags(QAbstractFileEngine::BundleType); + return d->checkAttribute<bool>( + QFileSystemMetaData::BundleType, + [d]() { return d->metaData.isBundle(); }, + [d]() { return d->getFileFlags(QAbstractFileEngine::BundleType); }); } /*! @@ -1079,14 +1057,10 @@ bool QFileInfo::isBundle() const bool QFileInfo::isSymLink() const { Q_D(const QFileInfo); - if (d->isDefaultConstructed) - return false; - if (d->fileEngine == 0) { - if (!d->cache_enabled || !d->metaData.hasFlags(QFileSystemMetaData::LegacyLinkType)) - QFileSystemEngine::fillMetaData(d->fileEntry, d->metaData, QFileSystemMetaData::LegacyLinkType); - return d->metaData.isLegacyLink(); - } - return d->getFileFlags(QAbstractFileEngine::LinkType); + return d->checkAttribute<bool>( + QFileSystemMetaData::LegacyLinkType, + [d]() { return d->metaData.isLegacyLink(); }, + [d]() { return d->getFileFlags(QAbstractFileEngine::LinkType); }); } /*! @@ -1098,7 +1072,7 @@ bool QFileInfo::isRoot() const { Q_D(const QFileInfo); if (d->isDefaultConstructed) - return true; + return false; if (d->fileEngine == 0) { if (d->fileEntry.isRoot()) { #if defined(Q_OS_WIN) && !defined(Q_OS_WINRT) @@ -1174,14 +1148,10 @@ QString QFileInfo::owner() const uint QFileInfo::ownerId() const { Q_D(const QFileInfo); - if (d->isDefaultConstructed) - return 0; - if (d->fileEngine == 0) { - if (!d->cache_enabled || !d->metaData.hasFlags(QFileSystemMetaData::UserId)) - QFileSystemEngine::fillMetaData(d->fileEntry, d->metaData, QFileSystemMetaData::UserId); - return d->metaData.userId(); - } - return d->fileEngine->ownerId(QAbstractFileEngine::OwnerUser); + return d->checkAttribute(uint(-2), + QFileSystemMetaData::UserId, + [d]() { return d->metaData.userId(); }, + [d]() { return d->fileEngine->ownerId(QAbstractFileEngine::OwnerUser); }); } /*! @@ -1213,14 +1183,10 @@ QString QFileInfo::group() const uint QFileInfo::groupId() const { Q_D(const QFileInfo); - if (d->isDefaultConstructed) - return 0; - if (d->fileEngine == 0) { - if (!d->cache_enabled || !d->metaData.hasFlags(QFileSystemMetaData::GroupId)) - QFileSystemEngine::fillMetaData(d->fileEntry, d->metaData, QFileSystemMetaData::GroupId); - return d->metaData.groupId(); - } - return d->fileEngine->ownerId(QAbstractFileEngine::OwnerGroup); + return d->checkAttribute(uint(-2), + QFileSystemMetaData::GroupId, + [d]() { return d->metaData.groupId(); }, + [d]() { return d->fileEngine->ownerId(QAbstractFileEngine::OwnerGroup); }); } /*! @@ -1242,16 +1208,15 @@ uint QFileInfo::groupId() const bool QFileInfo::permission(QFile::Permissions permissions) const { Q_D(const QFileInfo); - if (d->isDefaultConstructed) - return false; - if (d->fileEngine == 0) { - // the QFileSystemMetaData::MetaDataFlag and QFile::Permissions overlap, so just static cast. - QFileSystemMetaData::MetaDataFlag permissionFlags = static_cast<QFileSystemMetaData::MetaDataFlag>((int)permissions); - if (!d->cache_enabled || !d->metaData.hasFlags(permissionFlags)) - QFileSystemEngine::fillMetaData(d->fileEntry, d->metaData, permissionFlags); - return (d->metaData.permissions() & permissions) == permissions; - } - return d->getFileFlags(QAbstractFileEngine::FileFlags((int)permissions)) == (uint)permissions; + // the QFileSystemMetaData::MetaDataFlag and QFile::Permissions overlap, so just cast. + auto fseFlags = QFileSystemMetaData::MetaDataFlag(int(permissions)); + auto feFlags = QAbstractFileEngine::FileFlags(int(permissions)); + return d->checkAttribute<bool>( + fseFlags, + [=]() { return (d->metaData.permissions() & permissions) == permissions; }, + [=]() { + return d->getFileFlags(feFlags) == uint(permissions); + }); } /*! @@ -1264,14 +1229,12 @@ bool QFileInfo::permission(QFile::Permissions permissions) const QFile::Permissions QFileInfo::permissions() const { Q_D(const QFileInfo); - if (d->isDefaultConstructed) - return 0; - if (d->fileEngine == 0) { - if (!d->cache_enabled || !d->metaData.hasFlags(QFileSystemMetaData::Permissions)) - QFileSystemEngine::fillMetaData(d->fileEntry, d->metaData, QFileSystemMetaData::Permissions); - return d->metaData.permissions(); - } - return QFile::Permissions(d->getFileFlags(QAbstractFileEngine::PermsMask) & QAbstractFileEngine::PermsMask); + return d->checkAttribute<QFile::Permissions>( + QFileSystemMetaData::Permissions, + [d]() { return d->metaData.permissions(); }, + [d]() { + return QFile::Permissions(d->getFileFlags(QAbstractFileEngine::PermsMask) & QAbstractFileEngine::PermsMask); + }); } @@ -1284,64 +1247,77 @@ QFile::Permissions QFileInfo::permissions() const qint64 QFileInfo::size() const { Q_D(const QFileInfo); - if (d->isDefaultConstructed) - return 0; - if (d->fileEngine == 0) { - if (!d->cache_enabled || !d->metaData.hasFlags(QFileSystemMetaData::SizeAttribute)) - QFileSystemEngine::fillMetaData(d->fileEntry, d->metaData, QFileSystemMetaData::SizeAttribute); - return d->metaData.size(); - } - if (!d->getCachedFlag(QFileInfoPrivate::CachedSize)) { - d->setCachedFlag(QFileInfoPrivate::CachedSize); - d->fileSize = d->fileEngine->size(); - } - return d->fileSize; + return d->checkAttribute<qint64>( + QFileSystemMetaData::SizeAttribute, + [d]() { return d->metaData.size(); }, + [d]() { + if (!d->getCachedFlag(QFileInfoPrivate::CachedSize)) { + d->setCachedFlag(QFileInfoPrivate::CachedSize); + d->fileSize = d->fileEngine->size(); + } + return d->fileSize; + }); } +#if QT_DEPRECATED_SINCE(5, 10) /*! - Returns the date and local time when the file was created. + \deprecated - On most Unix systems, this function returns the time of the last - status change. A status change occurs when the file is created, - but it also occurs whenever the user writes or sets inode - information (for example, changing the file permissions). + Returns the date and time when the file was created, the time its metadata + was last changed or the time of last modification, whichever one of the + three is available (in that order). - If neither creation time nor "last status change" time are not - available, returns the same as lastModified(). + This function is deprecated. Instead, use the birthTime() function to get + the time the file was created, metadataChangeTime() to get the time its + metadata was last changed, or lastModified() to get the time it was last modified. - \sa lastModified(), lastRead() + \sa birthTime(), metadataChangeTime(), lastModified(), lastRead() */ QDateTime QFileInfo::created() const { - Q_D(const QFileInfo); - if (d->isDefaultConstructed) - return QDateTime(); - if (d->fileEngine == 0) { - if (!d->cache_enabled || !d->metaData.hasFlags(QFileSystemMetaData::CreationTime)) - if (!QFileSystemEngine::fillMetaData(d->fileEntry, d->metaData, QFileSystemMetaData::CreationTime)) - return QDateTime(); - return d->metaData.creationTime().toLocalTime(); - } - return d->getFileTime(QAbstractFileEngine::CreationTime).toLocalTime(); + QDateTime d = fileTime(QFile::FileBirthTime); + if (d.isValid()) + return d; + return fileTime(QFile::FileMetadataChangeTime); +} +#endif + +/*! + \since 5.10 + Returns the date and time when the file was created / born. + + If the file birth time is not available, this function returns an invalid + QDateTime. + + \sa lastModified(), lastRead(), metadataChangeTime() +*/ +QDateTime QFileInfo::birthTime() const +{ + return fileTime(QFile::FileBirthTime); +} + +/*! + \since 5.10 + Returns the date and time when the file metadata was changed. A metadata + change occurs when the file is created, but it also occurs whenever the + user writes or sets inode information (for example, changing the file + permissions). + + \sa lastModified(), lastRead() +*/ +QDateTime QFileInfo::metadataChangeTime() const +{ + return fileTime(QFile::FileMetadataChangeTime); } /*! Returns the date and local time when the file was last modified. - \sa created(), lastRead() + \sa birthTime(), lastRead(), metadataChangeTime(), fileTime() */ QDateTime QFileInfo::lastModified() const { - Q_D(const QFileInfo); - if (d->isDefaultConstructed) - return QDateTime(); - if (d->fileEngine == 0) { - if (!d->cache_enabled || !d->metaData.hasFlags(QFileSystemMetaData::ModificationTime)) - if (!QFileSystemEngine::fillMetaData(d->fileEntry, d->metaData, QFileSystemMetaData::ModificationTime)) - return QDateTime(); - return d->metaData.modificationTime().toLocalTime(); - } - return d->getFileTime(QAbstractFileEngine::ModificationTime).toLocalTime(); + return fileTime(QFile::FileModificationTime); } /*! @@ -1350,20 +1326,50 @@ QDateTime QFileInfo::lastModified() const On platforms where this information is not available, returns the same as lastModified(). - \sa created(), lastModified() + \sa birthTime(), lastModified(), metadataChangeTime(), fileTime() */ QDateTime QFileInfo::lastRead() const { + return fileTime(QFile::FileAccessTime); +} + +/*! + \since 5.10 + + Returns the file time specified by \a time. If the time cannot be + determined, an invalid date time is returned. + + \sa QFile::FileTime, QDateTime::isValid() +*/ +QDateTime QFileInfo::fileTime(QFile::FileTime time) const +{ + Q_STATIC_ASSERT(int(QFile::FileAccessTime) == int(QAbstractFileEngine::AccessTime)); + Q_STATIC_ASSERT(int(QFile::FileBirthTime) == int(QAbstractFileEngine::BirthTime)); + Q_STATIC_ASSERT(int(QFile::FileMetadataChangeTime) == int(QAbstractFileEngine::MetadataChangeTime)); + Q_STATIC_ASSERT(int(QFile::FileModificationTime) == int(QAbstractFileEngine::ModificationTime)); + Q_D(const QFileInfo); - if (d->isDefaultConstructed) - return QDateTime(); - if (d->fileEngine == 0) { - if (!d->cache_enabled || !d->metaData.hasFlags(QFileSystemMetaData::AccessTime)) - if (!QFileSystemEngine::fillMetaData(d->fileEntry, d->metaData, QFileSystemMetaData::AccessTime)) - return QDateTime(); - return d->metaData.accessTime().toLocalTime(); + auto fetime = QAbstractFileEngine::FileTime(time); + QFileSystemMetaData::MetaDataFlags flag; + switch (time) { + case QFile::FileAccessTime: + flag = QFileSystemMetaData::AccessTime; + break; + case QFile::FileBirthTime: + flag = QFileSystemMetaData::BirthTime; + break; + case QFile::FileMetadataChangeTime: + flag = QFileSystemMetaData::MetadataChangeTime; + break; + case QFile::FileModificationTime: + flag = QFileSystemMetaData::ModificationTime; + break; } - return d->getFileTime(QAbstractFileEngine::AccessTime).toLocalTime(); + + return d->checkAttribute<QDateTime>( + flag, + [=]() { return d->metaData.fileTime(fetime).toLocalTime(); }, + [=]() { return d->getFileTime(fetime).toLocalTime(); }); } /*! @@ -1410,4 +1416,15 @@ void QFileInfo::setCaching(bool enable) Synonym for QList<QFileInfo>. */ +#ifndef QT_NO_DEBUG_STREAM +QDebug operator<<(QDebug dbg, const QFileInfo &fi) +{ + QDebugStateSaver saver(dbg); + dbg.nospace(); + dbg.noquote(); + dbg << "QFileInfo(" << QDir::toNativeSeparators(fi.filePath()) << ')'; + return dbg; +} +#endif + QT_END_NAMESPACE |