/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
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** This file is part of the QtCore module of the Qt Toolkit.
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** ensure the GNU Lesser General Public License version 3 requirements
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** Alternatively, this file may be used under the terms of the GNU
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****************************************************************************/

#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)
    , 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('/');
    }
}

QFileSystemIterator::~QFileSystemIterator()
{
    if (dir)
        QT_CLOSEDIR(dir);
}

bool QFileSystemIterator::advance(QFileSystemEntry &fileEntry, QFileSystemMetaData &metaData)
{
    if (!dir)
        return false;

    dirEntry = QT_READDIR(dir);

    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