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39
40#include "qplatformdefs.h"
41#include "qfilesystemiterator_p.h"
42
43#include <private/qstringconverter_p.h>
44
45#ifndef QT_NO_FILESYSTEMITERATOR
46
47#include <memory>
48
49#include <stdlib.h>
50#include <errno.h>
51
52QT_BEGIN_NAMESPACE
53
54static bool checkNameDecodable(const char *d_name, qsizetype len)
55{
56 // This function is called in a loop from advance() below, but the loop is
57 // usually run only once.
58
59 return QUtf8::isValidUtf8(QByteArrayView(d_name, len)).isValidUtf8;
60}
61
62QFileSystemIterator::QFileSystemIterator(const QFileSystemEntry &entry, QDir::Filters filters,
63 const QStringList &nameFilters, QDirIterator::IteratorFlags flags)
64 : nativePath(entry.nativeFilePath())
65 , dir(nullptr)
66 , dirEntry(nullptr)
67 , lastError(0)
68{
69 Q_UNUSED(filters);
70 Q_UNUSED(nameFilters);
71 Q_UNUSED(flags);
72
73 if ((dir = QT_OPENDIR(nativePath.constData())) == nullptr) {
74 lastError = errno;
75 } else {
76 if (!nativePath.endsWith('/'))
77 nativePath.append('/');
78 }
79}
80
81QFileSystemIterator::~QFileSystemIterator()
82{
83 if (dir)
84 QT_CLOSEDIR(dir);
85}
86
87bool QFileSystemIterator::advance(QFileSystemEntry &fileEntry, QFileSystemMetaData &metaData)
88{
89 if (!dir)
90 return false;
91
92 for (;;) {
93 dirEntry = QT_READDIR(dir);
94
95 if (dirEntry) {
96 qsizetype len = strlen(dirEntry->d_name);
97 if (checkNameDecodable(dirEntry->d_name, len)) {
98 fileEntry = QFileSystemEntry(nativePath + QByteArray(dirEntry->d_name, len), QFileSystemEntry::FromNativePath());
99 metaData.fillFromDirEnt(*dirEntry);
100 return true;
101 }
102 } else {
103 break;
104 }
105 }
106
107 lastError = errno;
108 return false;
109}
110
111QT_END_NAMESPACE
112
113#endif // QT_NO_FILESYSTEMITERATOR
114