QFileSystemEntry QFileSystemEngine::currentPath()
{
    QFileSystemEntry result;
    QT_STATBUF st;
    if (QT_STAT(".", &st) == 0) {
#if defined(__GLIBC__) && !defined(PATH_MAX)
        char *currentName = ::get_current_dir_name();
        if (currentName) {
            result = QFileSystemEntry(QByteArray(currentName), QFileSystemEntry::FromNativePath());
            ::free(currentName);
        }
#else
        char currentName[PATH_MAX+1];
        if (::getcwd(currentName, PATH_MAX)) {
#if defined(Q_OS_VXWORKS) && defined(VXWORKS_VXSIM)
            QByteArray dir(currentName);
            if (dir.indexOf(':') < dir.indexOf('/'))
                dir.remove(0, dir.indexOf(':')+1);

            qstrncpy(currentName, dir.constData(), PATH_MAX);
#endif
            result = QFileSystemEntry(QByteArray(currentName), QFileSystemEntry::FromNativePath());
        }
# if defined(QT_DEBUG)
        if (result.isEmpty())
            qWarning("QFileSystemEngine::currentPath: getcwd() failed");
# endif
#endif
    } else {
# if defined(QT_DEBUG)
        qWarning("QFileSystemEngine::currentPath: stat(\".\") failed");
# endif
    }
    return result;
}
QString QFSFileEngine::fileName(FileName file) const
{
    Q_D(const QFSFileEngine);
    if (file == BundleName) {
        return QFileSystemEngine::bundleName(d->fileEntry);
    } else if (file == BaseName) {
        return d->fileEntry.fileName();
    } else if (file == PathName) {
        return d->fileEntry.path();
    } else if (file == AbsoluteName || file == AbsolutePathName) {
        QFileSystemEntry entry(QFileSystemEngine::absoluteName(d->fileEntry));
        if (file == AbsolutePathName) {
            return entry.path();
        }
        return entry.filePath();
    } else if (file == CanonicalName || file == CanonicalPathName) {
        QFileSystemEntry entry(QFileSystemEngine::canonicalName(d->fileEntry, d->metaData));
        if (file == CanonicalPathName)
            return entry.path();
        return entry.filePath();
    } else if (file == LinkName) {
        if (d->isSymlink()) {
            QFileSystemEntry entry = QFileSystemEngine::getLinkTarget(d->fileEntry, d->metaData);
            return entry.filePath();
        }
        return QString();
    }
    return d->fileEntry.filePath();
}
QFileSystemEntry QFileSystemEngine::currentPath()
{
    QFileSystemEntry result;
    QT_STATBUF st;
    if (QT_STAT(".", &st) == 0) {
#if defined(__GLIBC__) && !defined(PATH_MAX)
        char *currentName = ::get_current_dir_name();
        if (currentName) {
            result = QFileSystemEntry(QByteArray(currentName), QFileSystemEntry::FromNativePath());
            ::free(currentName);
        }
#else
        char currentName[PATH_MAX+1];
        if (::getcwd(currentName, PATH_MAX))
            result = QFileSystemEntry(QByteArray(currentName), QFileSystemEntry::FromNativePath());
# if defined(QT_DEBUG)
        if (result.isEmpty())
            qWarning("QFSFileEngine::currentPath: getcwd() failed");
# endif
#endif
    } else {
# if defined(QT_DEBUG)
        qWarning("QFSFileEngine::currentPath: stat(\".\") failed");
# endif
    }
    return result;
}
//static
QFileSystemEntry QFileSystemEngine::absoluteName(const QFileSystemEntry &entry)
{
    if (entry.isAbsolute() && entry.isClean())
        return entry;

    QByteArray orig = entry.nativeFilePath();
    QByteArray result;
    if (orig.isEmpty() || !orig.startsWith('/')) {
        QFileSystemEntry cur(currentPath());
        result = cur.nativeFilePath();
    }
    if (!orig.isEmpty() && !(orig.length() == 1 && orig[0] == '.')) {
        if (!result.isEmpty() && !result.endsWith('/'))
            result.append('/');
        result.append(orig);
    }

    if (result.length() == 1 && result[0] == '/')
        return QFileSystemEntry(result, QFileSystemEntry::FromNativePath());
    const bool isDir = result.endsWith('/');

    /* as long as QDir::cleanPath() operates on a QString we have to convert to a string here.
     * ideally we never convert to a string since that loses information. Please fix after
     * we get a QByteArray version of QDir::cleanPath()
     */
    QFileSystemEntry resultingEntry(result, QFileSystemEntry::FromNativePath());
    QString stringVersion = QDir::cleanPath(resultingEntry.filePath());
    if (isDir)
        stringVersion.append(QLatin1Char('/'));
    return QFileSystemEntry(stringVersion);
}
//static
bool QFileSystemEngine::renameFile(const QFileSystemEntry &source, const QFileSystemEntry &target, QSystemError &error)
{
    if (::rename(source.nativeFilePath().constData(), target.nativeFilePath().constData()) == 0)
        return true;
    error = QSystemError(errno, QSystemError::StandardLibraryError);
    return false;
}
static bool isPackage(const QFileSystemMetaData &data, const QFileSystemEntry &entry)
{
    if (!data.isDirectory())
        return false;

    QFileInfo info(entry.filePath());
    QString suffix = info.suffix();

    if (suffix.length() > 0) {
        // First step: is the extension known ?
        CFStringRef extensionRef = QCFString::toCFStringRef(suffix);
        CFStringRef uniformTypeIdentifier = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, extensionRef, NULL);
        if (UTTypeConformsTo(uniformTypeIdentifier, kUTTypeBundle))
            return true;

        // Second step: check if an application knows the package type
        CFStringRef path = QCFString::toCFStringRef(entry.filePath());
        QCFType<CFURLRef> url = CFURLCreateWithFileSystemPath(0, path, kCFURLPOSIXPathStyle, true);

        UInt32 type, creator;
        // Well created packages have the PkgInfo file
        if (CFBundleGetPackageInfoInDirectory(url, &type, &creator))
            return true;

        // Find if an application other than Finder claims to know how to handle the package
        QCFType<CFURLRef> application;
        LSGetApplicationForURL(url,
                               kLSRolesEditor|kLSRolesViewer|kLSRolesViewer,
                               NULL,
                               &application);

        if (application) {
            QCFType<CFBundleRef> bundle = CFBundleCreate(kCFAllocatorDefault, application);
            CFStringRef identifier = CFBundleGetIdentifier(bundle);
            QString applicationId = QCFString::toQString(identifier);
            if (applicationId != QLatin1String("com.apple.finder"))
                return true;
        }
    }

    // Third step: check if the directory has the package bit set
    FSRef packageRef;
    FSPathMakeRef((UInt8 *)entry.nativeFilePath().constData(), &packageRef, NULL);

    FSCatalogInfo catalogInfo;
    FSGetCatalogInfo(&packageRef,
                     kFSCatInfoFinderInfo,
                     &catalogInfo,
                     NULL,
                     NULL,
                     NULL);

    FolderInfo *folderInfo = reinterpret_cast<FolderInfo *>(catalogInfo.finderInfo);
    return folderInfo->finderFlags & kHasBundle;
}
Exemple #7
0
QT_BEGIN_NAMESPACE

QString QFileInfoPrivate::getFileName(QAbstractFileEngine::FileName name) const
{
    if (cache_enabled && !fileNames[(int)name].isNull())
        return fileNames[(int)name];

    QString ret;
    if (fileEngine == 0) { // local file; use the QFileSystemEngine directly
        switch (name) {
        case QAbstractFileEngine::CanonicalName:
        case QAbstractFileEngine::CanonicalPathName: {
            QFileSystemEntry entry = QFileSystemEngine::canonicalName(fileEntry, metaData);
            if (cache_enabled) { // be smart and store both
                fileNames[QAbstractFileEngine::CanonicalName] = entry.filePath();
                fileNames[QAbstractFileEngine::CanonicalPathName] = entry.path();
            }
            if (name == QAbstractFileEngine::CanonicalName)
                ret = entry.filePath();
            else
                ret = entry.path();
            break;
        }
        case QAbstractFileEngine::LinkName:
            ret = QFileSystemEngine::getLinkTarget(fileEntry, metaData).filePath();
            break;
        case QAbstractFileEngine::BundleName:
            ret = QFileSystemEngine::bundleName(fileEntry);
            break;
        case QAbstractFileEngine::AbsoluteName:
        case QAbstractFileEngine::AbsolutePathName: {
            QFileSystemEntry entry = QFileSystemEngine::absoluteName(fileEntry);
            if (cache_enabled) { // be smart and store both
                fileNames[QAbstractFileEngine::AbsoluteName] = entry.filePath();
                fileNames[QAbstractFileEngine::AbsolutePathName] = entry.path();
            }
            if (name == QAbstractFileEngine::AbsoluteName)
                ret = entry.filePath();
            else
                ret = entry.path();
            break;
        }
        default:
            break;
        }
    } else {
        ret = fileEngine->fileName(name);
    }
    if (ret.isNull())
        ret = QLatin1String("");
    if (cache_enabled)
        fileNames[(int)name] = ret;
    return ret;
}
//static
QByteArray QFileSystemEngine::id(const QFileSystemEntry &entry)
{
    struct stat statResult;
    if (stat(entry.nativeFilePath().constData(), &statResult)) {
        qErrnoWarning("stat() failed for '%s'", entry.nativeFilePath().constData());
        return QByteArray();
    }
    QByteArray result = QByteArray::number(quint64(statResult.st_dev), 16);
    result += ':';
    result += QByteArray::number(quint64(statResult.st_ino));
    return result;
}
//static
QFileSystemEntry QFileSystemEngine::canonicalName(const QFileSystemEntry &entry, QFileSystemMetaData &data)
{
    if (entry.isEmpty() || entry.isRoot())
        return entry;

    QFileSystemEntry result = absoluteName(entry);
    if (!data.hasFlags(QFileSystemMetaData::ExistsAttribute))
        fillMetaData(result, data, QFileSystemMetaData::ExistsAttribute);
    if (!data.exists()) {
        // file doesn't exist
        return QFileSystemEntry();
    } else {
        return result;
    }
}
QT_BEGIN_NAMESPACE

#if defined(Q_OS_DARWIN)
static inline bool hasResourcePropertyFlag(const QFileSystemMetaData &data,
                                           const QFileSystemEntry &entry,
                                           CFStringRef key)
{
    QCFString path = CFStringCreateWithFileSystemRepresentation(0,
        entry.nativeFilePath().constData());
    if (!path)
        return false;

    QCFType<CFURLRef> url = CFURLCreateWithFileSystemPath(0, path, kCFURLPOSIXPathStyle,
        data.hasFlags(QFileSystemMetaData::DirectoryType));
    if (!url)
        return false;

    CFBooleanRef value;
    if (CFURLCopyResourcePropertyForKey(url, key, &value, NULL)) {
        if (value == kCFBooleanTrue)
            return true;
    }

    return false;
}
//static
bool QFileSystemEngine::setPermissions(const QFileSystemEntry &entry, QFile::Permissions permissions, QSystemError &error, QFileSystemMetaData *data)
{
    mode_t mode = 0;
    if (permissions & (QFile::ReadOwner | QFile::ReadUser))
        mode |= S_IRUSR;
    if (permissions & (QFile::WriteOwner | QFile::WriteUser))
        mode |= S_IWUSR;
    if (permissions & (QFile::ExeOwner | QFile::ExeUser))
        mode |= S_IXUSR;
    if (permissions & QFile::ReadGroup)
        mode |= S_IRGRP;
    if (permissions & QFile::WriteGroup)
        mode |= S_IWGRP;
    if (permissions & QFile::ExeGroup)
        mode |= S_IXGRP;
    if (permissions & QFile::ReadOther)
        mode |= S_IROTH;
    if (permissions & QFile::WriteOther)
        mode |= S_IWOTH;
    if (permissions & QFile::ExeOther)
        mode |= S_IXOTH;

    bool success = ::chmod(entry.nativeFilePath().constData(), mode) == 0;
    if (success && data) {
        data->entryFlags &= ~QFileSystemMetaData::Permissions;
        data->entryFlags |= QFileSystemMetaData::MetaDataFlag(uint(permissions));
        data->knownFlagsMask |= QFileSystemMetaData::Permissions;
    }
    if (!success)
        error = QSystemError(errno, QSystemError::StandardLibraryError);
    return success;
}
//static
bool QFileSystemEngine::createDirectory(const QFileSystemEntry &entry, bool createParents)
{
    QString dirName = entry.filePath();
    if (createParents) {
        dirName = QDir::cleanPath(dirName);
        for (int oldslash = -1, slash=0; slash != -1; oldslash = slash) {
            slash = dirName.indexOf(QDir::separator(), oldslash+1);
            if (slash == -1) {
                if (oldslash == dirName.length())
                    break;
                slash = dirName.length();
            }
            if (slash) {
                QByteArray chunk = QFile::encodeName(dirName.left(slash));
                QT_STATBUF st;
                if (QT_STAT(chunk, &st) != -1) {
                    if ((st.st_mode & S_IFMT) != S_IFDIR)
                        return false;
                } else if (QT_MKDIR(chunk, 0777) != 0) {
                    return false;
                }
            }
        }
        return true;
    }
#if defined(Q_OS_DARWIN)  // Mac X doesn't support trailing /'s
    if (dirName.endsWith(QLatin1Char('/')))
        dirName.chop(1);
#endif
    return (QT_MKDIR(QFile::encodeName(dirName), 0777) == 0);
}
/*!
    \internal

    Returns the stdlib open string corresponding to a QIODevice::OpenMode.
*/
static inline QByteArray openModeToFopenMode(QIODevice::OpenMode flags, const QFileSystemEntry &fileEntry,
        QFileSystemMetaData &metaData)
{
    QByteArray mode;
    if ((flags & QIODevice::ReadOnly) && !(flags & QIODevice::Truncate)) {
        mode = "rb";
        if (flags & QIODevice::WriteOnly) {
            metaData.clearFlags(QFileSystemMetaData::FileType);
            if (!fileEntry.isEmpty()
                    && QFileSystemEngine::fillMetaData(fileEntry, metaData, QFileSystemMetaData::FileType)
                    && metaData.isFile()) {
                mode += '+';
            } else {
                mode = "wb+";
            }
        }
    } else if (flags & QIODevice::WriteOnly) {
        mode = "wb";
        if (flags & QIODevice::ReadOnly)
            mode += '+';
    }
    if (flags & QIODevice::Append) {
        mode = "ab";
        if (flags & QIODevice::ReadOnly)
            mode += '+';
    }

#if defined(__GLIBC__) && (__GLIBC__ * 0x100 + __GLIBC_MINOR__) >= 0x0207
    // must be glibc >= 2.7
    mode += 'e';
#endif

    return mode;
}
//static
QFileSystemEntry QFileSystemEngine::canonicalName(const QFileSystemEntry &entry, QFileSystemMetaData &data)
{
    if (entry.isEmpty() || entry.isRoot())
        return entry;

#if !defined(Q_OS_MAC) && _POSIX_VERSION < 200809L
    // realpath(X,0) is not supported
    Q_UNUSED(data);
    return QFileSystemEntry(slowCanonicalized(absoluteName(entry).filePath()));
#else
    char *ret = 0;
# if defined(Q_OS_MAC)
#  if !defined(QT_NO_CORESERVICES)
    // Mac OS X 10.5.x doesn't support the realpath(X,0) extension we use here.
    if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_6) {
        ret = realpath(entry.nativeFilePath().constData(), (char*)0);
    } else {
        // on 10.5 we can use FSRef to resolve the file path.
        QString path = QDir::cleanPath(entry.filePath());
        FSRef fsref;
        if (FSPathMakeRef((const UInt8 *)path.toUtf8().data(), &fsref, 0) == noErr) {
            CFURLRef urlref = CFURLCreateFromFSRef(NULL, &fsref);
            CFStringRef canonicalPath = CFURLCopyFileSystemPath(urlref, kCFURLPOSIXPathStyle);
            QString ret = QCFString::toQString(canonicalPath);
            CFRelease(canonicalPath);
            CFRelease(urlref);
            return QFileSystemEntry(ret);
        }
    }
#  else
    ret = (char*)malloc(PATH_MAX);
    realpath(entry.nativeFilePath().constData(), (char*)ret);
#  endif //!defined(QT_NO_CORESERVICES)
#  else
#ifdef Q_OS_ANDROID
    ret = (char*)malloc(PATH_MAX);
    memset(ret, 0, PATH_MAX);
    ret = realpath(entry.nativeFilePath().constData(), ret);
#else
    ret = realpath(entry.nativeFilePath().constData(), (char*)0);
#endif
    ret = realpath(entry.nativeFilePath().constData(), (char*)0);
# endif //defined(Q_OS_MAC)
    if (ret) {
        data.knownFlagsMask |= QFileSystemMetaData::ExistsAttribute;
        data.entryFlags |= QFileSystemMetaData::ExistsAttribute;
        QString canonicalPath = QDir::cleanPath(QString::fromLocal8Bit(ret));
        free(ret);
        return QFileSystemEntry(canonicalPath);
    } else if (errno == ENOENT) { // file doesn't exist
        data.knownFlagsMask |= QFileSystemMetaData::ExistsAttribute;
        data.entryFlags &= ~(QFileSystemMetaData::ExistsAttribute);
        return QFileSystemEntry();
    }
    return entry;
#endif
}
//static
bool QFileSystemEngine::removeFile(const QFileSystemEntry &entry, QSystemError &error)
{
    if (unlink(entry.nativeFilePath().constData()) == 0)
        return true;
    error = QSystemError(errno, QSystemError::StandardLibraryError);
    return false;

}
static bool isPackage(const QFileSystemMetaData &data, const QFileSystemEntry &entry)
{
    if (!data.isDirectory())
        return false;

    QFileInfo info(entry.filePath());
    QString suffix = info.suffix();

    if (suffix.length() > 0) {
        // First step: is the extension known ?
        QCFType<CFStringRef> extensionRef = QCFString::toCFStringRef(suffix);
        QCFType<CFStringRef> uniformTypeIdentifier = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, extensionRef, NULL);
        if (UTTypeConformsTo(uniformTypeIdentifier, kUTTypeBundle))
            return true;

        // Second step: check if an application knows the package type
        QCFType<CFStringRef> path = QCFString::toCFStringRef(entry.filePath());
        QCFType<CFURLRef> url = CFURLCreateWithFileSystemPath(0, path, kCFURLPOSIXPathStyle, true);

        UInt32 type, creator;
        // Well created packages have the PkgInfo file
        if (CFBundleGetPackageInfoInDirectory(url, &type, &creator))
            return true;

#ifdef Q_OS_OSX
        // Find if an application other than Finder claims to know how to handle the package
        QCFType<CFURLRef> application;
        LSGetApplicationForURL(url,
                               kLSRolesEditor|kLSRolesViewer|kLSRolesViewer,
                               NULL,
                               &application);

        if (application) {
            QCFType<CFBundleRef> bundle = CFBundleCreate(kCFAllocatorDefault, application);
            CFStringRef identifier = CFBundleGetIdentifier(bundle);
            QString applicationId = QCFString::toQString(identifier);
            if (applicationId != QLatin1String("com.apple.finder"))
                return true;
        }
#endif
    }

    // Third step: check if the directory has the package bit set
    return hasResourcePropertyFlag(data, entry, kCFURLIsPackageKey);
}
//static
bool QFileSystemEngine::removeDirectory(const QFileSystemEntry &entry, bool removeEmptyParents)
{
    if (removeEmptyParents) {
        QString dirName = QDir::cleanPath(entry.filePath());
        for (int oldslash = 0, slash=dirName.length(); slash > 0; oldslash = slash) {
            QByteArray chunk = QFile::encodeName(dirName.left(slash));
            QT_STATBUF st;
            if (QT_STAT(chunk, &st) != -1) {
                if ((st.st_mode & S_IFMT) != S_IFDIR)
                    return false;
                if (::rmdir(chunk) != 0)
                    return oldslash != 0;
            } else {
                return false;
            }
            slash = dirName.lastIndexOf(QDir::separator(), oldslash-1);
        }
        return true;
    }
    return rmdir(QFile::encodeName(entry.filePath())) == 0;
}
//static
QString QFileSystemEngine::bundleName(const QFileSystemEntry &entry)
{
    QCFType<CFURLRef> url = CFURLCreateWithFileSystemPath(0, QCFString(entry.filePath()),
            kCFURLPOSIXPathStyle, true);
    if (QCFType<CFDictionaryRef> dict = CFBundleCopyInfoDictionaryForURL(url)) {
        if (CFTypeRef name = (CFTypeRef)CFDictionaryGetValue(dict, kCFBundleNameKey)) {
            if (CFGetTypeID(name) == CFStringGetTypeID())
                return QCFString::toQString((CFStringRef)name);
        }
    }
    return QString();
}
Exemple #19
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/*!
    \internal
*/
void QDirIteratorPrivate::advance()
{
    if (engine) {
        while (!fileEngineIterators.isEmpty()) {
            // Find the next valid iterator that matches the filters.
            QAbstractFileEngineIterator *it;
            while (it = fileEngineIterators.top(), it->hasNext()) {
                it->next();
                if (entryMatches(it->currentFileName(), it->currentFileInfo()))
                    return;
            }

            fileEngineIterators.pop();
            delete it;
        }
    } else {
#ifndef QT_NO_FILESYSTEMITERATOR
        QFileSystemEntry nextEntry;
        QFileSystemMetaData nextMetaData;

        while (!nativeIterators.isEmpty()) {
            // Find the next valid iterator that matches the filters.
            QFileSystemIterator *it;
            while (it = nativeIterators.top(), it->advance(nextEntry, nextMetaData)) {
                QFileInfo info(new QFileInfoPrivate(nextEntry, nextMetaData));

                if (entryMatches(nextEntry.fileName(), info))
                    return;
            }

            nativeIterators.pop();
            delete it;
        }
#endif
    }

    currentFileInfo = nextFileInfo;
    nextFileInfo = QFileInfo();
}
QT_BEGIN_NAMESPACE

QFileSystemIterator::QFileSystemIterator(const QFileSystemEntry &path, QDir::Filters filters,
        const QStringList &nameFilters, QDirIterator::IteratorFlags iteratorFlags)
        : lastError(KErrNone), entryIndex(-1)
{
    RFs& fs = qt_s60GetRFs();

    nativePath = path.nativeFilePath();
    if (!nativePath.endsWith(QLatin1Char('\\')))
        nativePath.append(QLatin1Char('\\'));

    QString absPath = QFileSystemEngine::absoluteName(path).nativeFilePath();

    if (!absPath.endsWith(QLatin1Char('\\')))
        absPath.append(QLatin1Char('\\'));

    int pathLen = absPath.length();
    if (pathLen > KMaxFileName) {
        lastError = KErrBadName;
        return;
    }

    //set up server side filtering to reduce IPCs
    //RDir won't accept all valid name filters e.g. "*. bar"
    if (nameFilters.count() == 1 && !(filters & QDir::AllDirs) && iteratorFlags
        == QDirIterator::NoIteratorFlags && pathLen + nameFilters[0].length()
        <= KMaxFileName) {
        //server side supports one mask - skip this for recursive mode or if only files should be filtered
        absPath.append(nameFilters[0]);
    }

    TUint symbianMask = 0;
    if ((filters & QDir::Dirs) || (filters & QDir::AllDirs) || (iteratorFlags
        & QDirIterator::Subdirectories))
        symbianMask |= KEntryAttDir; //include directories
    if (filters & QDir::Hidden)
        symbianMask |= KEntryAttHidden;
    if (filters & QDir::System)
        symbianMask |= KEntryAttSystem;
    //Do not use KEntryAttMatchExclusive to optimise to return only
    //directories for QDir::Dirs. There may be a file which is actually
    //a "mount point" for a file engine and needs to be returned so it
    //can be overriden to be a directory, see QTBUG-23688
    if (symbianMask == 0
        && ((filters & QDir::PermissionMask) == QDir::Writable)) {
            symbianMask = KEntryAttMatchExclude | KEntryAttReadOnly;
    }

    lastError = dirHandle.Open(fs, qt_QString2TPtrC(absPath), symbianMask);
}
//static
QFileSystemEntry QFileSystemEngine::absoluteName(const QFileSystemEntry &entry)
{
    QString orig = entry.filePath();
    const bool isAbsolute = entry.isAbsolute();
    const bool isDirty = !entry.isClean();
    if (isAbsolute && !isDirty)
        return entry;

    const bool isRelative = entry.isRelative();
    const bool needsDrive = (!orig.isEmpty() && orig.at(0).unicode() == '/');
    const bool isDriveLetter = !needsDrive && !isAbsolute && !isRelative && orig.length() == 2;
    const bool isDriveRelative = !needsDrive && !isAbsolute && !isRelative && orig.length() > 2;

    QString result;
    if (needsDrive || isDriveLetter || isDriveRelative || !isAbsolute || orig.isEmpty()) {
        QFileSystemEntry cur(currentPath());
        if(needsDrive)
            result = cur.filePath().left(2);
        else if(isDriveRelative && cur.filePath().at(0) != orig.at(0))
            result = orig.left(2); // for BC, see tst_QFileInfo::absolutePath(<not current drive>:my.dll)
        else
            result = cur.filePath();
        if(isDriveLetter) {
            result[0] = orig.at(0); //copy drive letter
            orig.clear();
        }
        if(isDriveRelative) {
            orig = orig.mid(2); //discard the drive specifier from orig
        }
    }
    if (!orig.isEmpty() && !(orig.length() == 1 && orig.at(0).unicode() == '.')) {
        if (!result.isEmpty() && !result.endsWith(QLatin1Char('/')))
            result.append(QLatin1Char('/'));
        result.append(orig);
    }

    return QFileSystemEntry(symbianCleanAbsolutePath(result), QFileSystemEntry::FromInternalPath());
}
//static
bool QFileSystemEngine::setCurrentPath(const QFileSystemEntry &entry)
{
    QFileSystemMetaData meta;
    QFileSystemEntry absname = absoluteName(entry);
    fillMetaData(absname, meta, QFileSystemMetaData::ExistsAttribute | QFileSystemMetaData::DirectoryType);
    if(!(meta.exists() && meta.isDirectory()))
        return false;

    RFs& fs = qt_s60GetRFs();
    QString abspath = absname.nativeFilePath();
    if(!abspath.endsWith(QLatin1Char('\\')))
        abspath.append(QLatin1Char('\\'));
    TInt r = fs.SetSessionPath(qt_QString2TPtrC(abspath));
    //SetSessionPath succeeds for non existent directory, which is why it's checked above
    if (r == KErrNone) {
        __ASSERT_COMPILE(sizeof(wchar_t) == sizeof(unsigned short));
        //attempt to set open C to the same path
        r = ::wchdir(reinterpret_cast<const wchar_t *>(absname.filePath().utf16()));
        if (r < 0)
            qWarning("failed to sync path to open C");
        return true;
    }
    return false;
}
static bool _q_resolveEntryAndCreateLegacyEngine_recursive(QFileSystemEntry &entry, QFileSystemMetaData &data,
        QAbstractFileEngine *&engine, bool resolvingEntry = false)
{
    QString const &filePath = entry.filePath();
    if ((engine = qt_custom_file_engine_handler_create(filePath)))
        return _q_checkEntry(engine, resolvingEntry);

#if defined(QT_BUILD_CORE_LIB)
    for (int prefixSeparator = 0; prefixSeparator < filePath.size(); ++prefixSeparator) {
        QChar const ch = filePath[prefixSeparator];
        if (ch == QLatin1Char('/'))
            break;

        if (ch == QLatin1Char(':')) {
            if (prefixSeparator == 0) {
                engine = new QResourceFileEngine(filePath);
                return _q_checkEntry(engine, resolvingEntry);
            }

            if (prefixSeparator == 1)
                break;

            const QStringList &paths = QDir::searchPaths(filePath.left(prefixSeparator));
            for (int i = 0; i < paths.count(); i++) {
                entry = QFileSystemEntry(QDir::cleanPath(paths.at(i) % QLatin1Char('/') % filePath.mid(prefixSeparator + 1)));
                // Recurse!
                if (_q_resolveEntryAndCreateLegacyEngine_recursive(entry, data, engine, true))
                    return true;
            }

            // entry may have been clobbered at this point.
            return false;
        }

        //  There's no need to fully validate the prefix here. Consulting the
        //  unicode tables could be expensive and validation is already
        //  performed in QDir::setSearchPaths.
        //
        //  if (!ch.isLetterOrNumber())
        //      break;
    }
#endif // defined(QT_BUILD_CORE_LIB)

    return _q_checkEntry(entry, data, resolvingEntry);
}
//static
bool QFileSystemEngine::createDirectory(const QFileSystemEntry &entry, bool createParents)
{
    QString dirName = entry.filePath();
    if (createParents) {
        dirName = QDir::cleanPath(dirName);
        for (int oldslash = -1, slash=0; slash != -1; oldslash = slash) {
            slash = dirName.indexOf(QDir::separator(), oldslash+1);
            if (slash == -1) {
                if (oldslash == dirName.length())
                    break;
                slash = dirName.length();
            }
            if (slash) {
                const QByteArray chunk = QFile::encodeName(dirName.left(slash));
                if (QT_MKDIR(chunk.constData(), 0777) != 0) {
                    if (errno == EEXIST
#if defined(Q_OS_QNX)
                        // On QNX the QNet (VFS paths of other hosts mounted under a directory
                        // such as /net) mountpoint returns ENOENT, despite existing. stat()
                        // on the QNet mountpoint returns successfully and reports S_IFDIR.
                        || errno == ENOENT
#endif
                    ) {
                        QT_STATBUF st;
                        if (QT_STAT(chunk.constData(), &st) == 0 && (st.st_mode & S_IFMT) == S_IFDIR)
                            continue;
                    }
                    return false;
                }
            }
        }
        return true;
    }
#if defined(Q_OS_DARWIN)  // Mac X doesn't support trailing /'s
    if (dirName.endsWith(QLatin1Char('/')))
        dirName.chop(1);
#endif
    return (QT_MKDIR(QFile::encodeName(dirName).constData(), 0777) == 0);
}
//static
bool QFileSystemEngine::fillMetaData(const QFileSystemEntry &entry, QFileSystemMetaData &data, QFileSystemMetaData::MetaDataFlags what)
{
    if (what & QFileSystemMetaData::SymbianTEntryFlags) {
        RFs& fs(qt_s60GetRFs());
        TInt err;
        QFileSystemEntry absentry(absoluteName(entry));
        if (entry.isEmpty()) {
            err = KErrNotFound;
        } else if (absentry.isRoot()) {
            //Root directories don't have an entry, and Entry() returns KErrBadName.
            //Therefore get information about the volume instead.
            TInt drive;
            err = RFs::CharToDrive(TChar(absentry.nativeFilePath().at(0).unicode()), drive);
            if (!err) {
                TVolumeInfo info;
                err = fs.Volume(info, drive);
                if (!err)
                    data.fillFromVolumeInfo(info);
            }
        } else {
            TEntry ent;
            err = fs.Entry(qt_QString2TPtrC(absentry.nativeFilePath()), ent);
            if (!err)
                data.fillFromTEntry(ent);
        }
        if (err) {
            data.size_ = 0;
            data.modificationTime_ = TTime(0);
            data.entryFlags &= ~(QFileSystemMetaData::SymbianTEntryFlags);
        }
        //files in /sys/bin on any drive are executable, even though we don't normally have permission to check whether they exist or not
        if(absentry.filePath().midRef(1,10).compare(QLatin1String(":/sys/bin/"), Qt::CaseInsensitive) == 0)
            data.entryFlags |= QFileSystemMetaData::ExecutePermissions;
    }
    return data.hasFlags(what);
}
void tst_QFileSystemEntry::defaultCtor()
{
    QFileSystemEntry entry;

    QVERIFY(entry.filePath().isNull());
    QVERIFY(entry.nativeFilePath().isNull());

    QVERIFY(entry.fileName().isNull());
    QCOMPARE(entry.path(), QString("."));

    QVERIFY(entry.baseName().isNull());
    QVERIFY(entry.completeBaseName().isNull());
    QVERIFY(entry.suffix().isNull());
    QVERIFY(entry.completeSuffix().isNull());

    QVERIFY(!entry.isAbsolute());
    QVERIFY(entry.isRelative());

    QVERIFY(entry.isClean());

#if defined(Q_OS_WIN)
    QVERIFY(!entry.isDriveRoot());
#endif
    QVERIFY(!entry.isRoot());

    QVERIFY(entry.isEmpty());
}
//static
bool QFileSystemEngine::fillMetaData(const QFileSystemEntry &entry, QFileSystemMetaData &data,
        QFileSystemMetaData::MetaDataFlags what)
{
#if !defined(QWS) && !defined(Q_WS_QPA) && defined(Q_OS_MAC)
    if (what & QFileSystemMetaData::BundleType) {
        if (!data.hasFlags(QFileSystemMetaData::DirectoryType))
            what |= QFileSystemMetaData::DirectoryType;
    }
#endif

#if !defined(QWS) && !defined(Q_WS_QPA) && defined(Q_OS_MAC) \
        && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
    if (what & QFileSystemMetaData::HiddenAttribute) {
        // Mac OS >= 10.5: st_flags & UF_HIDDEN
        what |= QFileSystemMetaData::PosixStatFlags;
    }
#endif

    if (what & QFileSystemMetaData::PosixStatFlags)
        what |= QFileSystemMetaData::PosixStatFlags;

    if (what & QFileSystemMetaData::ExistsAttribute) {
        //  FIXME:  Would other queries being performed provide this bit?
        what |= QFileSystemMetaData::PosixStatFlags;
    }

    data.entryFlags &= ~what;

    const char * nativeFilePath;
    int nativeFilePathLength;
    {
        const QByteArray &path = entry.nativeFilePath();
        nativeFilePath = path.constData();
        nativeFilePathLength = path.size();
        Q_UNUSED(nativeFilePathLength);
    }

    bool entryExists = true; // innocent until proven otherwise

    QT_STATBUF statBuffer;
    bool statBufferValid = false;
    if (what & QFileSystemMetaData::LinkType) {
        if (QT_LSTAT(nativeFilePath, &statBuffer) == 0) {
            if (S_ISLNK(statBuffer.st_mode)) {
                data.entryFlags |= QFileSystemMetaData::LinkType;
            } else {
                statBufferValid = true;
                data.entryFlags &= ~QFileSystemMetaData::PosixStatFlags;
            }
        } else {
            entryExists = false;
        }

        data.knownFlagsMask |= QFileSystemMetaData::LinkType;
    }

    if (statBufferValid || (what & QFileSystemMetaData::PosixStatFlags)) {
        if (entryExists && !statBufferValid)
            statBufferValid = (QT_STAT(nativeFilePath, &statBuffer) == 0);

        if (statBufferValid)
            data.fillFromStatBuf(statBuffer);
        else {
            entryExists = false;
            data.creationTime_ = 0;
            data.modificationTime_ = 0;
            data.accessTime_ = 0;
            data.size_ = 0;
            data.userId_ = (uint) -2;
            data.groupId_ = (uint) -2;
        }

        // reset the mask
        data.knownFlagsMask |= QFileSystemMetaData::PosixStatFlags
            | QFileSystemMetaData::ExistsAttribute;
    }

#if !defined(QWS) && !defined(Q_WS_QPA) && defined(Q_OS_MAC)
    if (what & QFileSystemMetaData::AliasType)
    {
        if (entryExists) {
            FSRef fref;
            if (FSPathMakeRef((const UInt8 *)nativeFilePath, &fref, NULL) == noErr) {
                Boolean isAlias, isFolder;
                if (FSIsAliasFile(&fref, &isAlias, &isFolder) == noErr) {
                    if (isAlias)
                        data.entryFlags |= QFileSystemMetaData::AliasType;
                }
            }
        }
        data.knownFlagsMask |= QFileSystemMetaData::AliasType;
    }
#endif

    if (what & QFileSystemMetaData::UserPermissions) {
        // calculate user permissions

        if (entryExists) {
            if (what & QFileSystemMetaData::UserReadPermission) {
                if (QT_ACCESS(nativeFilePath, R_OK) == 0)
                    data.entryFlags |= QFileSystemMetaData::UserReadPermission;
            }
            if (what & QFileSystemMetaData::UserWritePermission) {
                if (QT_ACCESS(nativeFilePath, W_OK) == 0)
                    data.entryFlags |= QFileSystemMetaData::UserWritePermission;
            }
            if (what & QFileSystemMetaData::UserExecutePermission) {
                if (QT_ACCESS(nativeFilePath, X_OK) == 0)
                    data.entryFlags |= QFileSystemMetaData::UserExecutePermission;
            }
        }
        data.knownFlagsMask |= (what & QFileSystemMetaData::UserPermissions);
    }

    if (what & QFileSystemMetaData::HiddenAttribute
            && !data.isHidden()) {
        QString fileName = entry.fileName();
        if ((fileName.size() > 0 && fileName.at(0) == QLatin1Char('.'))
                || (entryExists && _q_isMacHidden(nativeFilePath)))
            data.entryFlags |= QFileSystemMetaData::HiddenAttribute;
        data.knownFlagsMask |= QFileSystemMetaData::HiddenAttribute;
    }

#if !defined(QWS) && !defined(Q_WS_QPA) && defined(Q_OS_MAC)
    if (what & QFileSystemMetaData::BundleType) {
        if (entryExists && data.isDirectory()) {
            QCFType<CFStringRef> path = CFStringCreateWithBytes(0,
                    (const UInt8*)nativeFilePath, nativeFilePathLength,
                    kCFStringEncodingUTF8, false);
            QCFType<CFURLRef> url = CFURLCreateWithFileSystemPath(0, path,
                    kCFURLPOSIXPathStyle, true);

            UInt32 type, creator;
            if (CFBundleGetPackageInfoInDirectory(url, &type, &creator))
                data.entryFlags |= QFileSystemMetaData::BundleType;
        }

        data.knownFlagsMask |= QFileSystemMetaData::BundleType;
    }
#endif

    return data.hasFlags(what);
}
bool QFileSystemEngine::setCurrentPath(const QFileSystemEntry &path)
{
    int r;
    r = QT_CHDIR(path.nativeFilePath());
    return r >= 0;
}
//static
bool QFileSystemEngine::fillMetaData(const QFileSystemEntry &entry, QFileSystemMetaData &data,
        QFileSystemMetaData::MetaDataFlags what)
{
#if defined(Q_OS_MACX)
    if (what & QFileSystemMetaData::BundleType) {
        if (!data.hasFlags(QFileSystemMetaData::DirectoryType))
            what |= QFileSystemMetaData::DirectoryType;
    }
    if (what & QFileSystemMetaData::HiddenAttribute) {
        // Mac OS >= 10.5: st_flags & UF_HIDDEN
        what |= QFileSystemMetaData::PosixStatFlags;
    }
#endif // defined(Q_OS_MACX)

    if (what & QFileSystemMetaData::PosixStatFlags)
        what |= QFileSystemMetaData::PosixStatFlags;

    if (what & QFileSystemMetaData::ExistsAttribute) {
        //  FIXME:  Would other queries being performed provide this bit?
        what |= QFileSystemMetaData::PosixStatFlags;
    }

    data.entryFlags &= ~what;

    const char * nativeFilePath;
    int nativeFilePathLength;
    {
        const QByteArray &path = entry.nativeFilePath();
        nativeFilePath = path.constData();
        nativeFilePathLength = path.size();
        Q_UNUSED(nativeFilePathLength);
    }

    bool entryExists = true; // innocent until proven otherwise

    QT_STATBUF statBuffer;
    bool statBufferValid = false;
    if (what & QFileSystemMetaData::LinkType) {
        if (QT_LSTAT(nativeFilePath, &statBuffer) == 0) {
            if (S_ISLNK(statBuffer.st_mode)) {
                data.entryFlags |= QFileSystemMetaData::LinkType;
            } else {
                statBufferValid = true;
                data.entryFlags &= ~QFileSystemMetaData::PosixStatFlags;
            }
        } else {
            entryExists = false;
        }

        data.knownFlagsMask |= QFileSystemMetaData::LinkType;
    }

    if (statBufferValid || (what & QFileSystemMetaData::PosixStatFlags)) {
        if (entryExists && !statBufferValid)
            statBufferValid = (QT_STAT(nativeFilePath, &statBuffer) == 0);

        if (statBufferValid)
            data.fillFromStatBuf(statBuffer);
        else {
            entryExists = false;
            data.creationTime_ = 0;
            data.modificationTime_ = 0;
            data.accessTime_ = 0;
            data.size_ = 0;
            data.userId_ = (uint) -2;
            data.groupId_ = (uint) -2;
        }

        // reset the mask
        data.knownFlagsMask |= QFileSystemMetaData::PosixStatFlags
            | QFileSystemMetaData::ExistsAttribute;
    }

#if defined(Q_OS_MACX)
    if (what & QFileSystemMetaData::AliasType)
    {
        if (entryExists) {
            FSRef fref;
            if (FSPathMakeRef((const UInt8 *)nativeFilePath, &fref, NULL) == noErr) {
                Boolean isAlias, isFolder;
                if (FSIsAliasFile(&fref, &isAlias, &isFolder) == noErr) {
                    if (isAlias)
                        data.entryFlags |= QFileSystemMetaData::AliasType;
                }
            }
        }
        data.knownFlagsMask |= QFileSystemMetaData::AliasType;
    }
#endif

    if (what & QFileSystemMetaData::UserPermissions) {
        // calculate user permissions

        if (entryExists) {
            if (what & QFileSystemMetaData::UserReadPermission) {
                if (QT_ACCESS(nativeFilePath, R_OK) == 0)
                    data.entryFlags |= QFileSystemMetaData::UserReadPermission;
            }
            if (what & QFileSystemMetaData::UserWritePermission) {
                if (QT_ACCESS(nativeFilePath, W_OK) == 0)
                    data.entryFlags |= QFileSystemMetaData::UserWritePermission;
            }
            if (what & QFileSystemMetaData::UserExecutePermission) {
                if (QT_ACCESS(nativeFilePath, X_OK) == 0)
                    data.entryFlags |= QFileSystemMetaData::UserExecutePermission;
            }
        }
        data.knownFlagsMask |= (what & QFileSystemMetaData::UserPermissions);
    }

    if (what & QFileSystemMetaData::HiddenAttribute
            && !data.isHidden()) {
        QString fileName = entry.fileName();
        if ((fileName.size() > 0 && fileName.at(0) == QLatin1Char('.'))
                || (entryExists && _q_isMacHidden(nativeFilePath)))
            data.entryFlags |= QFileSystemMetaData::HiddenAttribute;
        data.knownFlagsMask |= QFileSystemMetaData::HiddenAttribute;
    }

#if defined(Q_OS_MACX)
    if (what & QFileSystemMetaData::BundleType) {
        if (entryExists && isPackage(data, entry))
            data.entryFlags |= QFileSystemMetaData::BundleType;

        data.knownFlagsMask |= QFileSystemMetaData::BundleType;
    }
#endif
    if (!entryExists) {
        data.clearFlags(what);
        return false;
    }
    return data.hasFlags(what);
}
//static
QFileSystemEntry QFileSystemEngine::getLinkTarget(const QFileSystemEntry &link, QFileSystemMetaData &data)
{
#if defined(__GLIBC__) && !defined(PATH_MAX)
#define PATH_CHUNK_SIZE 256
    char *s = 0;
    int len = -1;
    int size = PATH_CHUNK_SIZE;

    while (1) {
        s = (char *) ::realloc(s, size);
        Q_CHECK_PTR(s);
        len = ::readlink(link.nativeFilePath().constData(), s, size);
        if (len < 0) {
            ::free(s);
            break;
        }
        if (len < size) {
            break;
        }
        size *= 2;
    }
#else
    char s[PATH_MAX+1];
    int len = readlink(link.nativeFilePath().constData(), s, PATH_MAX);
#endif
    if (len > 0) {
        QString ret;
        if (!data.hasFlags(QFileSystemMetaData::DirectoryType))
            fillMetaData(link, data, QFileSystemMetaData::DirectoryType);
        if (data.isDirectory() && s[0] != '/') {
            QDir parent(link.filePath());
            parent.cdUp();
            ret = parent.path();
            if (!ret.isEmpty() && !ret.endsWith(QLatin1Char('/')))
                ret += QLatin1Char('/');
        }
        s[len] = '\0';
        ret += QFile::decodeName(QByteArray(s));
#if defined(__GLIBC__) && !defined(PATH_MAX)
        ::free(s);
#endif

        if (!ret.startsWith(QLatin1Char('/'))) {
            if (link.filePath().startsWith(QLatin1Char('/'))) {
                ret.prepend(link.filePath().left(link.filePath().lastIndexOf(QLatin1Char('/')))
                            + QLatin1Char('/'));
            } else {
                ret.prepend(QDir::currentPath() + QLatin1Char('/'));
            }
        }
        ret = QDir::cleanPath(ret);
        if (ret.size() > 1 && ret.endsWith(QLatin1Char('/')))
            ret.chop(1);
        return QFileSystemEntry(ret);
    }
#if !defined(QWS) && !defined(Q_WS_QPA) && defined(Q_OS_MAC)
    {
        FSRef fref;
        if (FSPathMakeRef((const UInt8 *)QFile::encodeName(QDir::cleanPath(link.filePath())).data(), &fref, 0) == noErr) {
            // TODO get the meta data info from the QFileSystemMetaData object
            Boolean isAlias, isFolder;
            if (FSResolveAliasFile(&fref, true, &isFolder, &isAlias) == noErr && isAlias) {
                AliasHandle alias;
                if (FSNewAlias(0, &fref, &alias) == noErr && alias) {
                    QCFString cfstr;
                    if (FSCopyAliasInfo(alias, 0, 0, &cfstr, 0, 0) == noErr)
                        return QFileSystemEntry(QCFString::toQString(cfstr));
                }
            }
        }
    }
#endif
    return QFileSystemEntry();
}