File indexing completed on 2024-12-22 04:35:00

 /*
     SPDX-FileCopyrightText: 2009 Nokia Corporation and /or its subsidiary(-ies).
     Contact: Qt Software Information (qt-info@nokia.com)
 
     This file is part of the QtCore module of the Qt Toolkit.
 
     $QT_BEGIN_LICENSE:LGPL$
     Commercial Usage
     Licensees holding valid Qt Commercial licenses may use this file in
     accordance with the Qt Commercial License Agreement provided with the
     Software or, alternatively, in accordance with the terms contained in
     a written agreement between you and Nokia.
 
     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: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
 
     In addition, as a special exception, Nokia gives you certain
     additional rights. These rights are described in the Nokia Qt LGPL
     Exception version 1.0, 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: https://www.gnu.org/licenses/gpl-3.0.html.
 
     If you are unsure which license is appropriate for your use, please
     contact the sales department at qt-sales@nokia.com.
     $QT_END_LICENSE$
 
 */
 
 #include "qdebug.h"
 #include "qfsfileengine_iterator_p.h"
 #include "qfsfileengine_p.h"
 #include "qplatformdefs.h"
 
 #include <qvariant.h>
 #include <QMutex>
 #include <private/qmutexpool_p.h>
 
 QT_BEGIN_NAMESPACE
 
 class QFSFileEngineIteratorPlatformSpecificData
 {
 public:
     inline QFSFileEngineIteratorPlatformSpecificData()
         : uncShareIndex(-1), findFileHandle(INVALID_HANDLE_VALUE),
           done(false), uncFallback(false)
     { }
 
     QFSFileEngineIterator *it;
 
     QStringList uncShares;
     int uncShareIndex;
 
     HANDLE findFileHandle;
     WIN32_FIND_DATA findData;
     bool done;
     bool uncFallback;
 
     void advance();
     void saveCurrentFileName();
 };
 
 void QFSFileEngineIteratorPlatformSpecificData::saveCurrentFileName()
 {
     if (uncFallback) {
         // Windows share / UNC path
         it->currentEntry = uncShares.at(uncShareIndex - 1);
     } else {
         // Local directory
         QT_WA({
             it->currentEntry = QString::fromUtf16((unsigned short *)findData.cFileName);
         } , {
             it->currentEntry = QString::fromLocal8Bit((const char *)findData.cFileName);
         });
     }
 }
 
 void QFSFileEngineIterator::advance()
 {
     platform->saveCurrentFileName();
 
     if (platform->done)
         return;
 
     if (platform->uncFallback) {
         ++platform->uncShareIndex;
     } else if (platform->findFileHandle != INVALID_HANDLE_VALUE) {
         QT_WA({
             if (!FindNextFile(platform->findFileHandle, &platform->findData)) {
                 platform->done = true;        
                 FindClose(platform->findFileHandle);
             }
         } , {
             if (!FindNextFileA(platform->findFileHandle, (WIN32_FIND_DATAA *)&platform->findData)) {
                 platform->done = true;
                 FindClose(platform->findFileHandle);
             }
         });
     }
 }
 
 void QFSFileEngineIterator::newPlatformSpecifics()
 {
     platform = new QFSFileEngineIteratorPlatformSpecificData;
     platform->it = this;
 }
 
 void QFSFileEngineIterator::deletePlatformSpecifics()
 {
     delete platform;
     platform = 0;
 }
 
 bool QFSFileEngineIterator::hasNext() const
 {
     if (platform->done)
         return false;
     
     if (platform->uncFallback)
         return platform->uncShareIndex > 0 && platform->uncShareIndex <= platform->uncShares.size();
     
     if (platform->findFileHandle == INVALID_HANDLE_VALUE) {
         QString path = this->path();
         // Local directory
         if (path.endsWith(QLatin1String(".lnk")))
             path = QFileInfo(path).readLink();
 
         if (!path.endsWith(QLatin1Char('/')))
             path.append(QLatin1Char('/'));
         path.append(QLatin1String("*.*"));
 
         QT_WA({
             QString fileName = QFSFileEnginePrivate::longFileName(path);
             platform->findFileHandle = FindFirstFileW((TCHAR *)fileName.utf16(),
                                                       &platform->findData);
         }, {
             // Cast is safe, since char is at end of WIN32_FIND_DATA
             platform->findFileHandle = FindFirstFileA(QFSFileEnginePrivate::win95Name(path),
                                                       (WIN32_FIND_DATAA*)&platform->findData);
         });
 
         if (platform->findFileHandle == INVALID_HANDLE_VALUE) {
             if (path.startsWith(QLatin1String("//"))) {
                 path = this->path();
                 // UNC
                 QStringList parts = QDir::toNativeSeparators(path).split(QLatin1Char('\\'), QString::SkipEmptyParts);
 
                 if (parts.count() == 1 && QFSFileEnginePrivate::uncListSharesOnServer(QLatin1String("\\\\") + parts.at(0),
                                                                                       &platform->uncShares)) {
                     if (platform->uncShares.isEmpty()) {
                         platform->done = true;
                     } else {
                         platform->uncShareIndex = 1;
                     }
                     platform->uncFallback = true;
                 } else {
                     platform->done = true;
                 }
             } else {
                 platform->done = true;        
             }
         }
 
         if (!platform->done && (!platform->uncFallback || !platform->uncShares.isEmpty()))
             platform->saveCurrentFileName();
     }
 
     return !platform->done;
 }
 
 QT_END_NAMESPACE