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39 | |
40 | #include "qplatformdefs.h" |
41 | #include "qfilesystemiterator_p.h" |
42 | |
43 | #if QT_CONFIG(textcodec) |
44 | # include <qtextcodec.h> |
45 | # include <private/qutfcodec_p.h> |
46 | #endif |
47 | |
48 | #ifndef QT_NO_FILESYSTEMITERATOR |
49 | |
50 | #include <memory> |
51 | |
52 | #include <stdlib.h> |
53 | #include <errno.h> |
54 | |
55 | QT_BEGIN_NAMESPACE |
56 | |
57 | static bool checkNameDecodable(const char *d_name, qsizetype len) |
58 | { |
59 | // This function is called in a loop from advance() below, but the loop is |
60 | // usually run only once. |
61 | |
62 | #if QT_CONFIG(textcodec) |
63 | // We identify the codecs by their RFC 2978 MIBenum values. In this |
64 | // function: |
65 | // 3 US-ASCII (ANSI X3.4-1986) |
66 | // 4 Latin1 (ISO-8859-1) |
67 | // 106 UTF-8 |
68 | QTextCodec *codec = QTextCodec::codecForLocale(); |
69 | # ifdef QT_LOCALE_IS_UTF8 |
70 | int mibEnum = 106; |
71 | # else |
72 | int mibEnum = codec->mibEnum(); |
73 | # endif |
74 | if (Q_LIKELY(mibEnum == 106)) // UTF-8 |
75 | return QUtf8::isValidUtf8(d_name, len).isValidUtf8; |
76 | if (mibEnum == 3) // US-ASCII |
77 | return QtPrivate::isAscii(QLatin1String(d_name, len)); |
78 | if (mibEnum == 4) // Latin 1 |
79 | return true; |
80 | |
81 | // fall back to generic QTextCodec |
82 | QTextCodec::ConverterState cs(QTextCodec::IgnoreHeader); |
83 | codec->toUnicode(d_name, len, &cs); |
84 | return cs.invalidChars == 0 && cs.remainingChars == 0; |
85 | #else |
86 | // if we have no text codecs, then QString::fromLocal8Bit is fromLatin1 |
87 | return true; |
88 | #endif |
89 | } |
90 | |
91 | QFileSystemIterator::QFileSystemIterator(const QFileSystemEntry &entry, QDir::Filters filters, |
92 | const QStringList &nameFilters, QDirIterator::IteratorFlags flags) |
93 | : nativePath(entry.nativeFilePath()) |
94 | , dir(nullptr) |
95 | , dirEntry(nullptr) |
96 | , lastError(0) |
97 | { |
98 | Q_UNUSED(filters) |
99 | Q_UNUSED(nameFilters) |
100 | Q_UNUSED(flags) |
101 | |
102 | if ((dir = QT_OPENDIR(nativePath.constData())) == nullptr) { |
103 | lastError = errno; |
104 | } else { |
105 | if (!nativePath.endsWith('/')) |
106 | nativePath.append('/'); |
107 | } |
108 | } |
109 | |
110 | QFileSystemIterator::~QFileSystemIterator() |
111 | { |
112 | if (dir) |
113 | QT_CLOSEDIR(dir); |
114 | } |
115 | |
116 | bool QFileSystemIterator::advance(QFileSystemEntry &fileEntry, QFileSystemMetaData &metaData) |
117 | { |
118 | if (!dir) |
119 | return false; |
120 | |
121 | for (;;) { |
122 | dirEntry = QT_READDIR(dir); |
123 | |
124 | if (dirEntry) { |
125 | qsizetype len = strlen(dirEntry->d_name); |
126 | if (checkNameDecodable(dirEntry->d_name, len)) { |
127 | fileEntry = QFileSystemEntry(nativePath + QByteArray(dirEntry->d_name, len), QFileSystemEntry::FromNativePath()); |
128 | metaData.fillFromDirEnt(*dirEntry); |
129 | return true; |
130 | } |
131 | } else { |
132 | break; |
133 | } |
134 | } |
135 | |
136 | lastError = errno; |
137 | return false; |
138 | } |
139 | |
140 | QT_END_NAMESPACE |
141 | |
142 | #endif // QT_NO_FILESYSTEMITERATOR |
143 | |