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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qplatformdefs.h"
#include "qfsfileengine_iterator_p.h"
#include <QtCore/qvariant.h>
#ifndef QT_NO_FSFILEENGINE
QT_BEGIN_NAMESPACE
class QFSFileEngineIteratorPlatformSpecificData
{
public:
inline QFSFileEngineIteratorPlatformSpecificData()
: dir(0), dirEntry(0), done(false)
#if defined(_POSIX_THREAD_SAFE_FUNCTIONS) && !defined(Q_OS_CYGWIN)
, mt_file(0)
#endif
{ }
DIR *dir;
dirent *dirEntry;
bool done;
#if defined(_POSIX_THREAD_SAFE_FUNCTIONS) && !defined(Q_OS_CYGWIN)
// for readdir_r
dirent *mt_file;
#endif
};
void QFSFileEngineIterator::advance()
{
currentEntry = platform->dirEntry ? QFile::decodeName(QByteArray(platform->dirEntry->d_name)) : QString();
if (!platform->dir)
return;
#if defined(_POSIX_THREAD_SAFE_FUNCTIONS) && !defined(Q_OS_CYGWIN)
if (::readdir_r(platform->dir, platform->mt_file, &platform->dirEntry) != 0)
platform->done = true;
#else
// ### add local lock to prevent breaking reentrancy
platform->dirEntry = ::readdir(platform->dir);
#endif // _POSIX_THREAD_SAFE_FUNCTIONS
if (!platform->dirEntry) {
::closedir(platform->dir);
platform->dir = 0;
platform->done = true;
#if defined(_POSIX_THREAD_SAFE_FUNCTIONS) && !defined(Q_OS_CYGWIN)
delete [] platform->mt_file;
platform->mt_file = 0;
#endif
}
}
void QFSFileEngineIterator::newPlatformSpecifics()
{
platform = new QFSFileEngineIteratorPlatformSpecificData;
}
void QFSFileEngineIterator::deletePlatformSpecifics()
{
if (platform->dir) {
::closedir(platform->dir);
#if defined(_POSIX_THREAD_SAFE_FUNCTIONS) && !defined(Q_OS_CYGWIN)
delete [] platform->mt_file;
platform->mt_file = 0;
#endif
}
delete platform;
platform = 0;
}
bool QFSFileEngineIterator::hasNext() const
{
if (!platform->done && !platform->dir) {
QFSFileEngineIterator *that = const_cast<QFSFileEngineIterator *>(this);
if ((that->platform->dir = ::opendir(QFile::encodeName(path()).data())) == 0) {
that->platform->done = true;
} else {
// ### Race condition; we should use fpathconf and dirfd().
long maxPathName = ::pathconf(QFile::encodeName(path()).data(), _PC_NAME_MAX);
if ((int) maxPathName == -1)
maxPathName = FILENAME_MAX;
maxPathName += sizeof(dirent) + 1;
#if defined(_POSIX_THREAD_SAFE_FUNCTIONS) && !defined(Q_OS_CYGWIN)
if (that->platform->mt_file)
delete [] that->platform->mt_file;
that->platform->mt_file = (dirent *)new char[maxPathName];
#endif
that->advance();
}
}
return !platform->done;
}
QT_END_NAMESPACE
#endif // QT_NO_FSFILEENGINE
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