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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include <QDirListing>
using namespace Qt::StringLiterals;
[[maybe_unused]] static void func() {
{
//! [0]
using ItFlag = QDirListing::IteratorFlag;
for (const auto &dirEntry : QDirListing(u"/etc"_s, ItFlag::Recursive)) {
qDebug() << dirEntry.filePath();
// /etc/.
// /etc/..
// /etc/X11
// /etc/X11/fs
// ...
}
//! [0]
}
{
//! [1]
using ItFlag = QDirListing::IteratorFlag;
QDirListing dirList(u"/sys"_s, QStringList{u"scaling_cur_freq"_s},
QDir::NoFilter, ItFlag::Recursive);
for (const auto &dirEntry : dirList) {
QFile f(dirEntry.filePath());
f.open(QIODevice::ReadOnly);
qDebug() << f.fileName() << f.readAll().trimmed().toDouble() / 1000 << "MHz";
}
//! [1]
}
{
//! [2]
QDirListing audioFileIt(u"/home/johndoe/"_s, {"*.mp3", "*.wav"}, QDir::Files);
//! [2]
}
{
//! [3]
using ItFlag = QDirListing::IteratorFlag;
for (const auto &dirEntry : QDirListing(u"/etc"_s, ItFlag::Recursive)) {
// Faster
if (dirEntry.fileName().endsWith(u".conf")) { /* ... */ }
// This works, but might be potentially slower, since it has to construct a
// QFileInfo, whereas (depending on the implemnetation) the fileName could
// be known already
if (dirEntry.fileInfo().fileName().endsWith(u".conf")) { /* ... */ }
}
//! [3]
}
{
//! [4]
using ItFlag = QDirListing::IteratorFlag;
for (const auto &dirEntry : QDirListing(u"/etc"_s, ItFlag::Recursive)) {
// Both approaches are the same, because DirEntry will have to construct
// a QFileInfo to get this info (for example, by calling system stat())
if (dirEntry.size() >= 4'000 /* 4KB */) { /* ...*/ }
if (dirEntry.fileInfo().size() >= 4'000 /* 4KB */) { /* ... */ }
}
//! [4]
}
}
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