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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qplatformdefs.h"
#include "qfilesystemiterator_p.h"
#include <private/qstringconverter_p.h>
#ifndef QT_NO_FILESYSTEMITERATOR
#include <memory>
#include <stdlib.h>
#include <errno.h>
QT_BEGIN_NAMESPACE
static bool checkNameDecodable(const char *d_name, qsizetype len)
{
// This function is called in a loop from advance() below, but the loop is
// usually run only once.
return QUtf8::isValidUtf8(QByteArrayView(d_name, len)).isValidUtf8;
}
QFileSystemIterator::QFileSystemIterator(const QFileSystemEntry &entry, QDir::Filters filters,
const QStringList &nameFilters, QDirIterator::IteratorFlags flags)
: nativePath(entry.nativeFilePath())
, dir(nullptr)
, dirEntry(nullptr)
, lastError(0)
{
Q_UNUSED(filters);
Q_UNUSED(nameFilters);
Q_UNUSED(flags);
if ((dir = QT_OPENDIR(nativePath.constData())) == nullptr) {
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;
for (;;) {
dirEntry = QT_READDIR(dir);
if (dirEntry) {
qsizetype len = strlen(dirEntry->d_name);
if (checkNameDecodable(dirEntry->d_name, len)) {
fileEntry = QFileSystemEntry(nativePath + QByteArray(dirEntry->d_name, len), QFileSystemEntry::FromNativePath());
metaData.fillFromDirEnt(*dirEntry);
return true;
}
} else {
break;
}
}
lastError = errno;
return false;
}
QT_END_NAMESPACE
#endif // QT_NO_FILESYSTEMITERATOR
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