143 lines
4.6 KiB
C++
143 lines
4.6 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the QtCore module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL3 included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or (at your option) the GNU General
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** Public license version 3 or any later version approved by the KDE Free
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** Qt Foundation. The licenses are as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-2.0.html and
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** https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qplatformdefs.h"
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#include "qfilesystemiterator_p.h"
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#if QT_CONFIG(textcodec)
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# include <qtextcodec.h>
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# include <private/qutfcodec_p.h>
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#endif
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#ifndef QT_NO_FILESYSTEMITERATOR
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#include <memory>
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#include <stdlib.h>
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#include <errno.h>
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QT_BEGIN_NAMESPACE
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static bool checkNameDecodable(const char *d_name, qsizetype len)
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{
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// This function is called in a loop from advance() below, but the loop is
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// usually run only once.
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#if QT_CONFIG(textcodec)
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// We identify the codecs by their RFC 2978 MIBenum values. In this
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// function:
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// 3 US-ASCII (ANSI X3.4-1986)
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// 4 Latin1 (ISO-8859-1)
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// 106 UTF-8
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QTextCodec *codec = QTextCodec::codecForLocale();
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# ifdef QT_LOCALE_IS_UTF8
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int mibEnum = 106;
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# else
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int mibEnum = codec->mibEnum();
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# endif
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if (Q_LIKELY(mibEnum == 106)) // UTF-8
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return QUtf8::isValidUtf8(d_name, len).isValidUtf8;
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if (mibEnum == 3) // US-ASCII
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return QtPrivate::isAscii(QLatin1String(d_name, len));
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if (mibEnum == 4) // Latin 1
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return true;
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// fall back to generic QTextCodec
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QTextCodec::ConverterState cs(QTextCodec::IgnoreHeader);
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codec->toUnicode(d_name, len, &cs);
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return cs.invalidChars == 0 && cs.remainingChars == 0;
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#else
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// if we have no text codecs, then QString::fromLocal8Bit is fromLatin1
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return true;
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#endif
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}
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QFileSystemIterator::QFileSystemIterator(const QFileSystemEntry &entry, QDir::Filters filters,
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const QStringList &nameFilters, QDirIterator::IteratorFlags flags)
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: nativePath(entry.nativeFilePath())
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, dir(nullptr)
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, dirEntry(nullptr)
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, lastError(0)
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{
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Q_UNUSED(filters)
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Q_UNUSED(nameFilters)
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Q_UNUSED(flags)
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if ((dir = QT_OPENDIR(nativePath.constData())) == nullptr) {
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lastError = errno;
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} else {
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if (!nativePath.endsWith('/'))
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nativePath.append('/');
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}
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}
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QFileSystemIterator::~QFileSystemIterator()
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{
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if (dir)
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QT_CLOSEDIR(dir);
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}
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bool QFileSystemIterator::advance(QFileSystemEntry &fileEntry, QFileSystemMetaData &metaData)
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{
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if (!dir)
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return false;
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for (;;) {
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dirEntry = QT_READDIR(dir);
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if (dirEntry) {
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qsizetype len = strlen(dirEntry->d_name);
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if (checkNameDecodable(dirEntry->d_name, len)) {
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fileEntry = QFileSystemEntry(nativePath + QByteArray(dirEntry->d_name, len), QFileSystemEntry::FromNativePath());
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metaData.fillFromDirEnt(*dirEntry);
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return true;
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}
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} else {
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break;
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}
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}
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lastError = errno;
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return false;
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}
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QT_END_NAMESPACE
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#endif // QT_NO_FILESYSTEMITERATOR
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