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// Copyright (C) 2019 Volker Krause <vkrause@kde.org>
// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "androidcontentfileengine.h"
#include <QtCore/qcoreapplication.h>
#include <QtCore/qjnienvironment.h>
#include <QtCore/qjniobject.h>
#include <QDebug>
using namespace QNativeInterface;
using namespace Qt::StringLiterals;
AndroidContentFileEngine::AndroidContentFileEngine(const QString &f)
: m_file(f)
{
setFileName(f);
}
bool AndroidContentFileEngine::open(QIODevice::OpenMode openMode,
std::optional<QFile::Permissions> permissions)
{
Q_UNUSED(permissions);
QString openModeStr;
if (openMode & QFileDevice::ReadOnly) {
openModeStr += u'r';
}
if (openMode & QFileDevice::WriteOnly) {
openModeStr += u'w';
}
if (openMode & QFileDevice::Truncate) {
openModeStr += u't';
} else if (openMode & QFileDevice::Append) {
openModeStr += u'a';
}
m_pfd = QJniObject::callStaticObjectMethod("org/qtproject/qt/android/QtNative",
"openParcelFdForContentUrl",
"(Landroid/content/Context;Ljava/lang/String;Ljava/lang/String;)Landroid/os/ParcelFileDescriptor;",
QAndroidApplication::context(),
QJniObject::fromString(fileName(DefaultName)).object(),
QJniObject::fromString(openModeStr).object());
if (!m_pfd.isValid())
return false;
const auto fd = m_pfd.callMethod<jint>("getFd", "()I");
if (fd < 0) {
m_pfd.callMethod<void>("close", "()V");
m_pfd = QJniObject();
return false;
}
return QFSFileEngine::open(openMode, fd, QFile::DontCloseHandle);
}
bool AndroidContentFileEngine::close()
{
if (m_pfd.isValid()) {
m_pfd.callMethod<void>("close", "()V");
m_pfd = QJniObject();
}
return QFSFileEngine::close();
}
qint64 AndroidContentFileEngine::size() const
{
const jlong size = QJniObject::callStaticMethod<jlong>(
"org/qtproject/qt/android/QtNative", "getSize",
"(Landroid/content/Context;Ljava/lang/String;)J", QAndroidApplication::context(),
QJniObject::fromString(fileName(DefaultName)).object());
return (qint64)size;
}
AndroidContentFileEngine::FileFlags AndroidContentFileEngine::fileFlags(FileFlags type) const
{
FileFlags commonFlags(ReadOwnerPerm|ReadUserPerm|ReadGroupPerm|ReadOtherPerm|ExistsFlag);
FileFlags flags;
const bool isDir = QJniObject::callStaticMethod<jboolean>(
"org/qtproject/qt/android/QtNative", "checkIfDir",
"(Landroid/content/Context;Ljava/lang/String;)Z", QAndroidApplication::context(),
QJniObject::fromString(fileName(DefaultName)).object());
// If it is a directory then we know it exists so there is no reason to explicitly check
const bool exists = isDir ? true : QJniObject::callStaticMethod<jboolean>(
"org/qtproject/qt/android/QtNative", "checkFileExists",
"(Landroid/content/Context;Ljava/lang/String;)Z", QAndroidApplication::context(),
QJniObject::fromString(fileName(DefaultName)).object());
if (!exists && !isDir)
return flags;
if (isDir) {
flags = DirectoryType | commonFlags;
} else {
flags = FileType | commonFlags;
const bool writable = QJniObject::callStaticMethod<jboolean>(
"org/qtproject/qt/android/QtNative", "checkIfWritable",
"(Landroid/content/Context;Ljava/lang/String;)Z", QAndroidApplication::context(),
QJniObject::fromString(fileName(DefaultName)).object());
if (writable)
flags |= WriteOwnerPerm|WriteUserPerm|WriteGroupPerm|WriteOtherPerm;
}
return type & flags;
}
QString AndroidContentFileEngine::fileName(FileName f) const
{
switch (f) {
case PathName:
case AbsolutePathName:
case CanonicalPathName:
case DefaultName:
case AbsoluteName:
case CanonicalName:
return m_file;
case BaseName:
{
const qsizetype pos = m_file.lastIndexOf(u'/');
return m_file.mid(pos);
}
default:
return QString();
}
}
QAbstractFileEngine::Iterator *AndroidContentFileEngine::beginEntryList(QDir::Filters filters, const QStringList &filterNames)
{
return new AndroidContentFileEngineIterator(filters, filterNames);
}
QAbstractFileEngine::Iterator *AndroidContentFileEngine::endEntryList()
{
return nullptr;
}
AndroidContentFileEngineHandler::AndroidContentFileEngineHandler() = default;
AndroidContentFileEngineHandler::~AndroidContentFileEngineHandler() = default;
QAbstractFileEngine* AndroidContentFileEngineHandler::create(const QString &fileName) const
{
if (!fileName.startsWith("content"_L1))
return nullptr;
return new AndroidContentFileEngine(fileName);
}
AndroidContentFileEngineIterator::AndroidContentFileEngineIterator(QDir::Filters filters,
const QStringList &filterNames)
: QAbstractFileEngineIterator(filters, filterNames)
{
}
AndroidContentFileEngineIterator::~AndroidContentFileEngineIterator()
{
}
QString AndroidContentFileEngineIterator::next()
{
if (!hasNext())
return QString();
++m_index;
return currentFilePath();
}
bool AndroidContentFileEngineIterator::hasNext() const
{
if (m_index == -1) {
if (path().isEmpty())
return false;
const bool isDir = QJniObject::callStaticMethod<jboolean>(
"org/qtproject/qt/android/QtNative", "checkIfDir",
"(Landroid/content/Context;Ljava/lang/String;)Z",
QAndroidApplication::context(),
QJniObject::fromString(path()).object());
if (isDir) {
QJniObject objArray = QJniObject::callStaticObjectMethod("org/qtproject/qt/android/QtNative",
"listContentsFromTreeUri",
"(Landroid/content/Context;Ljava/lang/String;)[Ljava/lang/String;",
QAndroidApplication::context(),
QJniObject::fromString(path()).object());
if (objArray.isValid()) {
QJniEnvironment env;
const jsize length = env->GetArrayLength(objArray.object<jarray>());
for (int i = 0; i != length; ++i) {
m_entries << QJniObject(env->GetObjectArrayElement(
objArray.object<jobjectArray>(), i)).toString();
}
}
}
m_index = 0;
}
return m_index < m_entries.size();
}
QString AndroidContentFileEngineIterator::currentFileName() const
{
if (m_index <= 0 || m_index > m_entries.size())
return QString();
return m_entries.at(m_index - 1);
}
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