1 | // Copyright (C) 2016 The Qt Company Ltd. |
2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
3 | |
4 | #include "qplatformdefs.h" |
5 | #include "qfilesystemiterator_p.h" |
6 | |
7 | #include <private/qstringconverter_p.h> |
8 | |
9 | #ifndef QT_NO_FILESYSTEMITERATOR |
10 | |
11 | #include <memory> |
12 | |
13 | #include <stdlib.h> |
14 | #include <errno.h> |
15 | |
16 | QT_BEGIN_NAMESPACE |
17 | |
18 | static bool checkNameDecodable(const char *d_name, qsizetype len) |
19 | { |
20 | // This function is called in a loop from advance() below, but the loop is |
21 | // usually run only once. |
22 | |
23 | return QUtf8::isValidUtf8(in: QByteArrayView(d_name, len)).isValidUtf8; |
24 | } |
25 | |
26 | QFileSystemIterator::QFileSystemIterator(const QFileSystemEntry &entry, QDir::Filters filters, |
27 | const QStringList &nameFilters, QDirIterator::IteratorFlags flags) |
28 | : nativePath(entry.nativeFilePath()) |
29 | , dir(nullptr) |
30 | , dirEntry(nullptr) |
31 | , lastError(0) |
32 | { |
33 | Q_UNUSED(filters); |
34 | Q_UNUSED(nameFilters); |
35 | Q_UNUSED(flags); |
36 | |
37 | if ((dir = QT_OPENDIR(name: nativePath.constData())) == nullptr) { |
38 | lastError = errno; |
39 | } else { |
40 | if (!nativePath.endsWith(c: '/')) |
41 | nativePath.append(c: '/'); |
42 | } |
43 | } |
44 | |
45 | QFileSystemIterator::~QFileSystemIterator() |
46 | { |
47 | if (dir) |
48 | QT_CLOSEDIR(dirp: dir); |
49 | } |
50 | |
51 | bool QFileSystemIterator::advance(QFileSystemEntry &fileEntry, QFileSystemMetaData &metaData) |
52 | { |
53 | if (!dir) |
54 | return false; |
55 | |
56 | for (;;) { |
57 | dirEntry = QT_READDIR(dirp: dir); |
58 | |
59 | if (dirEntry) { |
60 | qsizetype len = strlen(s: dirEntry->d_name); |
61 | if (checkNameDecodable(d_name: dirEntry->d_name, len)) { |
62 | fileEntry = QFileSystemEntry(nativePath + QByteArray(dirEntry->d_name, len), QFileSystemEntry::FromNativePath()); |
63 | metaData.fillFromDirEnt(statBuffer: *dirEntry); |
64 | return true; |
65 | } |
66 | } else { |
67 | break; |
68 | } |
69 | } |
70 | |
71 | lastError = errno; |
72 | return false; |
73 | } |
74 | |
75 | QT_END_NAMESPACE |
76 | |
77 | #endif // QT_NO_FILESYSTEMITERATOR |
78 | |