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2 | ** |
3 | ** Copyright (C) 2016 The Qt Company Ltd. |
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26 | ** Alternatively, this file may be used under the terms of the GNU |
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38 | ****************************************************************************/ |
39 | |
40 | #include "qfilesystemiterator_p.h" |
41 | #include "qfilesystemengine_p.h" |
42 | #include "qoperatingsystemversion.h" |
43 | #include "qplatformdefs.h" |
44 | #include "qvector.h" |
45 | |
46 | #include <QtCore/qt_windows.h> |
47 | |
48 | QT_BEGIN_NAMESPACE |
49 | |
50 | bool done = true; |
51 | |
52 | QFileSystemIterator::QFileSystemIterator(const QFileSystemEntry &entry, QDir::Filters filters, |
53 | const QStringList &nameFilters, QDirIterator::IteratorFlags flags) |
54 | : nativePath(entry.nativeFilePath()) |
55 | , dirPath(entry.filePath()) |
56 | , findFileHandle(INVALID_HANDLE_VALUE) |
57 | , uncFallback(false) |
58 | , uncShareIndex(0) |
59 | , onlyDirs(false) |
60 | { |
61 | Q_UNUSED(nameFilters) |
62 | Q_UNUSED(flags) |
63 | if (nativePath.endsWith(QLatin1String(".lnk"))) { |
64 | QFileSystemMetaData metaData; |
65 | QFileSystemEntry link = QFileSystemEngine::getLinkTarget(entry, metaData); |
66 | nativePath = link.nativeFilePath(); |
67 | } |
68 | if (!nativePath.endsWith(QLatin1Char('\\'))) |
69 | nativePath.append(QLatin1Char('\\')); |
70 | nativePath.append(QLatin1Char('*')); |
71 | // In MSVC2015+ case we prepend //?/ for longer file-name support |
72 | if (!dirPath.endsWith(QLatin1Char('/'))) |
73 | dirPath.append(QLatin1Char('/')); |
74 | if ((filters & (QDir::Dirs|QDir::Drives)) && (!(filters & (QDir::Files)))) |
75 | onlyDirs = true; |
76 | } |
77 | |
78 | QFileSystemIterator::~QFileSystemIterator() |
79 | { |
80 | if (findFileHandle != INVALID_HANDLE_VALUE) |
81 | FindClose(findFileHandle); |
82 | } |
83 | |
84 | bool QFileSystemIterator::advance(QFileSystemEntry &fileEntry, QFileSystemMetaData &metaData) |
85 | { |
86 | bool haveData = false; |
87 | WIN32_FIND_DATA findData; |
88 | |
89 | if (findFileHandle == INVALID_HANDLE_VALUE && !uncFallback) { |
90 | haveData = true; |
91 | int infoLevel = 0 ; // FindExInfoStandard; |
92 | DWORD dwAdditionalFlags = 0; |
93 | if (QOperatingSystemVersion::current() >= QOperatingSystemVersion::Windows7) { |
94 | dwAdditionalFlags = 2; // FIND_FIRST_EX_LARGE_FETCH |
95 | infoLevel = 1 ; // FindExInfoBasic; |
96 | } |
97 | int searchOps = 0; // FindExSearchNameMatch |
98 | if (onlyDirs) |
99 | searchOps = 1 ; // FindExSearchLimitToDirectories |
100 | findFileHandle = FindFirstFileEx((const wchar_t *)nativePath.utf16(), FINDEX_INFO_LEVELS(infoLevel), &findData, |
101 | FINDEX_SEARCH_OPS(searchOps), 0, dwAdditionalFlags); |
102 | if (findFileHandle == INVALID_HANDLE_VALUE) { |
103 | if (nativePath.startsWith(QLatin1String("\\\\?\\UNC\\"))) { |
104 | const QVector<QStringRef> parts = nativePath.splitRef(QLatin1Char('\\'), QString::SkipEmptyParts); |
105 | if (parts.count() == 4 && QFileSystemEngine::uncListSharesOnServer( |
106 | QLatin1String("\\\\") + parts.at(2), &uncShares)) { |
107 | if (uncShares.isEmpty()) |
108 | return false; // No shares found in the server |
109 | uncFallback = true; |
110 | } |
111 | } |
112 | } |
113 | } |
114 | if (findFileHandle == INVALID_HANDLE_VALUE && !uncFallback) |
115 | return false; |
116 | // Retrieve the new file information. |
117 | if (!haveData) { |
118 | if (uncFallback) { |
119 | if (++uncShareIndex >= uncShares.count()) |
120 | return false; |
121 | } else { |
122 | if (!FindNextFile(findFileHandle, &findData)) |
123 | return false; |
124 | } |
125 | } |
126 | // Create the new file system entry & meta data. |
127 | if (uncFallback) { |
128 | fileEntry = QFileSystemEntry(dirPath + uncShares.at(uncShareIndex)); |
129 | metaData.fillFromFileAttribute(FILE_ATTRIBUTE_DIRECTORY); |
130 | return true; |
131 | } else { |
132 | QString fileName = QString::fromWCharArray(findData.cFileName); |
133 | fileEntry = QFileSystemEntry(dirPath + fileName); |
134 | metaData = QFileSystemMetaData(); |
135 | if (!fileName.endsWith(QLatin1String(".lnk"))) { |
136 | metaData.fillFromFindData(findData, true); |
137 | } |
138 | return true; |
139 | } |
140 | return false; |
141 | } |
142 | |
143 | QT_END_NAMESPACE |
144 |
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