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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qplatformdefs.h"
#include "qfilesystemiterator_p.h"
#ifndef QT_NO_FILESYSTEMITERATOR
#include <stdlib.h>
#include <errno.h>
QT_BEGIN_NAMESPACE
QFileSystemIterator::QFileSystemIterator(const QFileSystemEntry &entry, QDir::Filters filters,
const QStringList &nameFilters, QDirIterator::IteratorFlags flags)
: nativePath(entry.nativeFilePath())
, dir(0)
, dirEntry(0)
#if defined(Q_OS_QNX) && defined(__EXT_QNX__READDIR_R)
, direntSize(0)
#endif
, lastError(0)
{
Q_UNUSED(filters)
Q_UNUSED(nameFilters)
Q_UNUSED(flags)
if ((dir = QT_OPENDIR(nativePath.constData())) == 0) {
lastError = errno;
} else {
if (!nativePath.endsWith('/'))
nativePath.append('/');
#if defined(_POSIX_THREAD_SAFE_FUNCTIONS) && !defined(Q_OS_CYGWIN) || defined(QT_EXT_QNX_READDIR_R)
// ### Race condition; we should use fpathconf and dirfd().
size_t maxPathName = ::pathconf(nativePath.constData(), _PC_NAME_MAX);
if (maxPathName == size_t(-1))
maxPathName = FILENAME_MAX;
maxPathName += sizeof(QT_DIRENT) + 1;
QT_DIRENT *p = reinterpret_cast<QT_DIRENT*>(::malloc(maxPathName));
Q_CHECK_PTR(p);
mt_file.reset(p);
#if defined(QT_EXT_QNX_READDIR_R)
direntSize = maxPathName;
// Include extra stat information in the readdir() call (d_stat member of
// dirent_extra_stat). This is used in QFileSystemMetaData::fillFromDirEnt() to
// avoid extra stat() calls when iterating over directories
int flags = dircntl(dir, D_GETFLAG) | D_FLAG_STAT | D_FLAG_FILTER;
if (dircntl(dir, D_SETFLAG, flags) == -1)
lastError = errno;
#endif
#endif
}
}
QFileSystemIterator::~QFileSystemIterator()
{
if (dir)
QT_CLOSEDIR(dir);
}
bool QFileSystemIterator::advance(QFileSystemEntry &fileEntry, QFileSystemMetaData &metaData)
{
if (!dir)
return false;
#if defined(QT_EXT_QNX_READDIR_R)
lastError = QT_EXT_QNX_READDIR_R(dir, mt_file.data(), &dirEntry, direntSize);
if (lastError)
return false;
#elif defined(_POSIX_THREAD_SAFE_FUNCTIONS) && !defined(Q_OS_CYGWIN)
lastError = QT_READDIR_R(dir, mt_file.data(), &dirEntry);
if (lastError)
return false;
#else
// ### add local lock to prevent breaking reentrancy
dirEntry = QT_READDIR(dir);
#endif // _POSIX_THREAD_SAFE_FUNCTIONS
if (dirEntry) {
fileEntry = QFileSystemEntry(nativePath + QByteArray(dirEntry->d_name), QFileSystemEntry::FromNativePath());
metaData.fillFromDirEnt(*dirEntry);
return true;
}
lastError = errno;
return false;
}
QT_END_NAMESPACE
#endif // QT_NO_FILESYSTEMITERATOR
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