865 lines
26 KiB
C++
865 lines
26 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the QtCore module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qsettings.h"
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#ifndef QT_NO_SETTINGS
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#include "qsettings_p.h"
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#include "qvector.h"
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#include "qmap.h"
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#include "qdebug.h"
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#include <qt_windows.h>
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QT_BEGIN_NAMESPACE
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/* Keys are stored in QStrings. If the variable name starts with 'u', this is a "user"
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key, ie. "foo/bar/alpha/beta". If the variable name starts with 'r', this is a "registry"
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key, ie. "\foo\bar\alpha\beta". */
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/*******************************************************************************
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** Some convenience functions
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*/
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/*
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We don't use KEY_ALL_ACCESS because it gives more rights than what we
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need. See task 199061.
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*/
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static const REGSAM registryPermissions = KEY_READ | KEY_WRITE;
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static QString keyPath(const QString &rKey)
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{
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int idx = rKey.lastIndexOf(QLatin1Char('\\'));
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if (idx == -1)
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return QString();
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return rKey.left(idx + 1);
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}
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static QString keyName(const QString &rKey)
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{
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int idx = rKey.lastIndexOf(QLatin1Char('\\'));
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QString res;
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if (idx == -1)
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res = rKey;
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else
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res = rKey.mid(idx + 1);
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if (res == QLatin1String("Default") || res == QLatin1String("."))
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res = QLatin1String("");
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return res;
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}
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static QString escapedKey(QString uKey)
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{
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QChar *data = uKey.data();
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int l = uKey.length();
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for (int i = 0; i < l; ++i) {
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ushort &ucs = data[i].unicode();
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if (ucs == '\\')
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ucs = '/';
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else if (ucs == '/')
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ucs = '\\';
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}
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return uKey;
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}
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static QString unescapedKey(QString rKey)
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{
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return escapedKey(rKey);
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}
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typedef QMap<QString, QString> NameSet;
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static void mergeKeySets(NameSet *dest, const NameSet &src)
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{
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NameSet::const_iterator it = src.constBegin();
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for (; it != src.constEnd(); ++it)
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dest->insert(unescapedKey(it.key()), QString());
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}
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static void mergeKeySets(NameSet *dest, const QStringList &src)
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{
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QStringList::const_iterator it = src.constBegin();
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for (; it != src.constEnd(); ++it)
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dest->insert(unescapedKey(*it), QString());
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}
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/*******************************************************************************
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** Wrappers for the insane windows registry API
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*/
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static QString errorCodeToString(DWORD errorCode)
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{
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wchar_t *data = 0;
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FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM, 0, errorCode, 0, data, 0, 0);
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QString result = QString::fromWCharArray(data);
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if (data != 0)
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LocalFree(data);
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if (result.endsWith(QLatin1Char('\n')))
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result.truncate(result.length() - 1);
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return result;
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}
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// Open a key with the specified perms
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static HKEY openKey(HKEY parentHandle, REGSAM perms, const QString &rSubKey)
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{
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HKEY resultHandle = 0;
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LONG res = RegOpenKeyEx(parentHandle, reinterpret_cast<const wchar_t *>(rSubKey.utf16()),
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0, perms, &resultHandle);
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if (res == ERROR_SUCCESS)
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return resultHandle;
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return 0;
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}
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// Open a key with the specified perms, create it if it does not exist
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static HKEY createOrOpenKey(HKEY parentHandle, REGSAM perms, const QString &rSubKey)
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{
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// try to open it
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HKEY resultHandle = openKey(parentHandle, perms, rSubKey);
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if (resultHandle != 0)
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return resultHandle;
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// try to create it
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LONG res = RegCreateKeyEx(parentHandle, reinterpret_cast<const wchar_t *>(rSubKey.utf16()), 0, 0,
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REG_OPTION_NON_VOLATILE, perms, 0, &resultHandle, 0);
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if (res == ERROR_SUCCESS)
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return resultHandle;
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//qWarning("QSettings: Failed to create subkey \"%s\": %s",
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// rSubKey.toLatin1().data(), errorCodeToString(res).toLatin1().data());
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return 0;
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}
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// Open or create a key in read-write mode if possible, otherwise read-only
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static HKEY createOrOpenKey(HKEY parentHandle, const QString &rSubKey, bool *readOnly)
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{
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// try to open or create it read/write
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HKEY resultHandle = createOrOpenKey(parentHandle, registryPermissions, rSubKey);
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if (resultHandle != 0) {
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if (readOnly != 0)
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*readOnly = false;
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return resultHandle;
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}
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// try to open or create it read/only
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resultHandle = createOrOpenKey(parentHandle, KEY_READ, rSubKey);
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if (resultHandle != 0) {
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if (readOnly != 0)
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*readOnly = true;
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return resultHandle;
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}
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return 0;
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}
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static QStringList childKeysOrGroups(HKEY parentHandle, QSettingsPrivate::ChildSpec spec)
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{
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QStringList result;
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DWORD numKeys;
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DWORD maxKeySize;
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DWORD numSubgroups;
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DWORD maxSubgroupSize;
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// Find the number of keys and subgroups, as well as the max of their lengths.
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LONG res = RegQueryInfoKey(parentHandle, 0, 0, 0, &numSubgroups, &maxSubgroupSize, 0,
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&numKeys, &maxKeySize, 0, 0, 0);
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if (res != ERROR_SUCCESS) {
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qWarning("QSettings: RegQueryInfoKey() failed: %s", errorCodeToString(res).toLatin1().data());
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return result;
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}
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++maxSubgroupSize;
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++maxKeySize;
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int n;
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int m;
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if (spec == QSettingsPrivate::ChildKeys) {
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n = numKeys;
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m = maxKeySize;
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} else {
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n = numSubgroups;
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m = maxSubgroupSize;
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}
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/* The size does not include the terminating null character. */
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++m;
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// Get the list
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QByteArray buff(m * sizeof(wchar_t), 0);
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for (int i = 0; i < n; ++i) {
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QString item;
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DWORD l = buff.size() / sizeof(wchar_t);
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if (spec == QSettingsPrivate::ChildKeys) {
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res = RegEnumValue(parentHandle, i, reinterpret_cast<wchar_t *>(buff.data()), &l, 0, 0, 0, 0);
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} else {
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res = RegEnumKeyEx(parentHandle, i, reinterpret_cast<wchar_t *>(buff.data()), &l, 0, 0, 0, 0);
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}
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if (res == ERROR_SUCCESS)
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item = QString::fromWCharArray((const wchar_t *)buff.constData(), l);
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if (res != ERROR_SUCCESS) {
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qWarning("QSettings: RegEnumValue failed: %s", errorCodeToString(res).toLatin1().data());
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continue;
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}
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if (item.isEmpty())
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item = QLatin1String(".");
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result.append(item);
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}
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return result;
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}
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static void allKeys(HKEY parentHandle, const QString &rSubKey, NameSet *result)
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{
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HKEY handle = openKey(parentHandle, KEY_READ, rSubKey);
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if (handle == 0)
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return;
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QStringList childKeys = childKeysOrGroups(handle, QSettingsPrivate::ChildKeys);
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QStringList childGroups = childKeysOrGroups(handle, QSettingsPrivate::ChildGroups);
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RegCloseKey(handle);
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for (int i = 0; i < childKeys.size(); ++i) {
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QString s = rSubKey;
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if (!s.isEmpty())
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s += QLatin1Char('\\');
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s += childKeys.at(i);
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result->insert(s, QString());
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}
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for (int i = 0; i < childGroups.size(); ++i) {
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QString s = rSubKey;
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if (!s.isEmpty())
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s += QLatin1Char('\\');
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s += childGroups.at(i);
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allKeys(parentHandle, s, result);
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}
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}
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static void deleteChildGroups(HKEY parentHandle)
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{
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QStringList childGroups = childKeysOrGroups(parentHandle, QSettingsPrivate::ChildGroups);
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for (int i = 0; i < childGroups.size(); ++i) {
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QString group = childGroups.at(i);
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// delete subgroups in group
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HKEY childGroupHandle = openKey(parentHandle, registryPermissions, group);
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if (childGroupHandle == 0)
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continue;
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deleteChildGroups(childGroupHandle);
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RegCloseKey(childGroupHandle);
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// delete group itself
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LONG res = RegDeleteKey(parentHandle, reinterpret_cast<const wchar_t *>(group.utf16()));
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if (res != ERROR_SUCCESS) {
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qWarning("QSettings: RegDeleteKey failed on subkey \"%s\": %s",
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group.toLatin1().data(), errorCodeToString(res).toLatin1().data());
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return;
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}
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}
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}
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/*******************************************************************************
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** class RegistryKey
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*/
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class RegistryKey
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{
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public:
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RegistryKey(HKEY parent_handle = 0, const QString &key = QString(), bool read_only = true);
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QString key() const;
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HKEY handle() const;
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HKEY parentHandle() const;
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bool readOnly() const;
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void close();
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private:
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HKEY m_parent_handle;
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mutable HKEY m_handle;
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QString m_key;
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mutable bool m_read_only;
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};
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RegistryKey::RegistryKey(HKEY parent_handle, const QString &key, bool read_only)
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{
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m_parent_handle = parent_handle;
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m_handle = 0;
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m_read_only = read_only;
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m_key = key;
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}
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QString RegistryKey::key() const
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{
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return m_key;
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}
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HKEY RegistryKey::handle() const
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{
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if (m_handle != 0)
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return m_handle;
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if (m_read_only)
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m_handle = openKey(m_parent_handle, KEY_READ, m_key);
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else
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m_handle = createOrOpenKey(m_parent_handle, m_key, &m_read_only);
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return m_handle;
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}
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HKEY RegistryKey::parentHandle() const
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{
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return m_parent_handle;
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}
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bool RegistryKey::readOnly() const
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{
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return m_read_only;
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}
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void RegistryKey::close()
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{
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if (m_handle != 0)
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RegCloseKey(m_handle);
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m_handle = 0;
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}
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typedef QVector<RegistryKey> RegistryKeyList;
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/*******************************************************************************
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** class QWinSettingsPrivate
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*/
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class QWinSettingsPrivate : public QSettingsPrivate
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{
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public:
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QWinSettingsPrivate(QSettings::Scope scope, const QString &organization,
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const QString &application);
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QWinSettingsPrivate(QString rKey);
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~QWinSettingsPrivate();
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void remove(const QString &uKey);
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void set(const QString &uKey, const QVariant &value);
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bool get(const QString &uKey, QVariant *value) const;
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QStringList children(const QString &uKey, ChildSpec spec) const;
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void clear();
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void sync();
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void flush();
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bool isWritable() const;
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HKEY writeHandle() const;
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bool readKey(HKEY parentHandle, const QString &rSubKey, QVariant *value) const;
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QString fileName() const;
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private:
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RegistryKeyList regList; // list of registry locations to search for keys
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bool deleteWriteHandleOnExit;
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};
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QWinSettingsPrivate::QWinSettingsPrivate(QSettings::Scope scope, const QString &organization,
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const QString &application)
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: QSettingsPrivate(QSettings::NativeFormat, scope, organization, application)
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{
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deleteWriteHandleOnExit = false;
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if (!organization.isEmpty()) {
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QString prefix = QLatin1String("Software\\") + organization;
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QString orgPrefix = prefix + QLatin1String("\\OrganizationDefaults");
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QString appPrefix = prefix + QLatin1Char('\\') + application;
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if (scope == QSettings::UserScope) {
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if (!application.isEmpty())
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regList.append(RegistryKey(HKEY_CURRENT_USER, appPrefix, !regList.isEmpty()));
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regList.append(RegistryKey(HKEY_CURRENT_USER, orgPrefix, !regList.isEmpty()));
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}
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if (!application.isEmpty())
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regList.append(RegistryKey(HKEY_LOCAL_MACHINE, appPrefix, !regList.isEmpty()));
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regList.append(RegistryKey(HKEY_LOCAL_MACHINE, orgPrefix, !regList.isEmpty()));
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}
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if (regList.isEmpty())
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setStatus(QSettings::AccessError);
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}
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QWinSettingsPrivate::QWinSettingsPrivate(QString rPath)
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: QSettingsPrivate(QSettings::NativeFormat)
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{
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deleteWriteHandleOnExit = false;
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if (rPath.startsWith(QLatin1Char('\\')))
|
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rPath.remove(0, 1);
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int keyLength;
|
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HKEY keyName;
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if (rPath.startsWith(QLatin1String("HKEY_CURRENT_USER"))) {
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keyLength = 17;
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keyName = HKEY_CURRENT_USER;
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} else if (rPath.startsWith(QLatin1String("HKCU"))) {
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keyLength = 4;
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keyName = HKEY_CURRENT_USER;
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} else if (rPath.startsWith(QLatin1String("HKEY_LOCAL_MACHINE"))) {
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keyLength = 18;
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keyName = HKEY_LOCAL_MACHINE;
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} else if (rPath.startsWith(QLatin1String("HKLM"))) {
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keyLength = 4;
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keyName = HKEY_LOCAL_MACHINE;
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} else if (rPath.startsWith(QLatin1String("HKEY_CLASSES_ROOT"))) {
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keyLength = 17;
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keyName = HKEY_CLASSES_ROOT;
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} else if (rPath.startsWith(QLatin1String("HKCR"))) {
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keyLength = 4;
|
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keyName = HKEY_CLASSES_ROOT;
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} else if (rPath.startsWith(QLatin1String("HKEY_USERS"))) {
|
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keyLength = 10;
|
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keyName = HKEY_USERS;
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} else if (rPath.startsWith(QLatin1String("HKU"))) {
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keyLength = 3;
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keyName = HKEY_USERS;
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} else {
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return;
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}
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|
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if (rPath.length() == keyLength)
|
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regList.append(RegistryKey(keyName, QString(), false));
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else if (rPath[keyLength] == QLatin1Char('\\'))
|
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regList.append(RegistryKey(keyName, rPath.mid(keyLength+1), false));
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}
|
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|
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bool QWinSettingsPrivate::readKey(HKEY parentHandle, const QString &rSubKey, QVariant *value) const
|
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{
|
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QString rSubkeyName = keyName(rSubKey);
|
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QString rSubkeyPath = keyPath(rSubKey);
|
|
|
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// open a handle on the subkey
|
|
HKEY handle = openKey(parentHandle, KEY_READ, rSubkeyPath);
|
|
if (handle == 0)
|
|
return false;
|
|
|
|
// get the size and type of the value
|
|
DWORD dataType;
|
|
DWORD dataSize;
|
|
LONG res = RegQueryValueEx(handle, reinterpret_cast<const wchar_t *>(rSubkeyName.utf16()), 0, &dataType, 0, &dataSize);
|
|
if (res != ERROR_SUCCESS) {
|
|
RegCloseKey(handle);
|
|
return false;
|
|
}
|
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|
|
// get the value
|
|
QByteArray data(dataSize, 0);
|
|
res = RegQueryValueEx(handle, reinterpret_cast<const wchar_t *>(rSubkeyName.utf16()), 0, 0,
|
|
reinterpret_cast<unsigned char*>(data.data()), &dataSize);
|
|
if (res != ERROR_SUCCESS) {
|
|
RegCloseKey(handle);
|
|
return false;
|
|
}
|
|
|
|
switch (dataType) {
|
|
case REG_EXPAND_SZ:
|
|
case REG_SZ: {
|
|
QString s;
|
|
if (dataSize) {
|
|
s = QString::fromWCharArray(((const wchar_t *)data.constData()));
|
|
}
|
|
if (value != 0)
|
|
*value = stringToVariant(s);
|
|
break;
|
|
}
|
|
|
|
case REG_MULTI_SZ: {
|
|
QStringList l;
|
|
if (dataSize) {
|
|
int i = 0;
|
|
for (;;) {
|
|
QString s = QString::fromWCharArray((const wchar_t *)data.constData() + i);
|
|
i += s.length() + 1;
|
|
|
|
if (s.isEmpty())
|
|
break;
|
|
l.append(s);
|
|
}
|
|
}
|
|
if (value != 0)
|
|
*value = stringListToVariantList(l);
|
|
break;
|
|
}
|
|
|
|
case REG_NONE:
|
|
case REG_BINARY: {
|
|
QString s;
|
|
if (dataSize) {
|
|
s = QString::fromWCharArray((const wchar_t *)data.constData(), data.size() / 2);
|
|
}
|
|
if (value != 0)
|
|
*value = stringToVariant(s);
|
|
break;
|
|
}
|
|
|
|
case REG_DWORD_BIG_ENDIAN:
|
|
case REG_DWORD: {
|
|
Q_ASSERT(data.size() == sizeof(int));
|
|
int i;
|
|
memcpy((char*)&i, data.constData(), sizeof(int));
|
|
if (value != 0)
|
|
*value = i;
|
|
break;
|
|
}
|
|
|
|
case REG_QWORD: {
|
|
Q_ASSERT(data.size() == sizeof(qint64));
|
|
qint64 i;
|
|
memcpy((char*)&i, data.constData(), sizeof(qint64));
|
|
if (value != 0)
|
|
*value = i;
|
|
break;
|
|
}
|
|
|
|
default:
|
|
qWarning("QSettings: Unknown data %d type in Windows registry", static_cast<int>(dataType));
|
|
if (value != 0)
|
|
*value = QVariant();
|
|
break;
|
|
}
|
|
|
|
RegCloseKey(handle);
|
|
return true;
|
|
}
|
|
|
|
HKEY QWinSettingsPrivate::writeHandle() const
|
|
{
|
|
if (regList.isEmpty())
|
|
return 0;
|
|
const RegistryKey &key = regList.at(0);
|
|
if (key.handle() == 0 || key.readOnly())
|
|
return 0;
|
|
return key.handle();
|
|
}
|
|
|
|
QWinSettingsPrivate::~QWinSettingsPrivate()
|
|
{
|
|
if (deleteWriteHandleOnExit && writeHandle() != 0) {
|
|
#if defined(Q_OS_WINCE)
|
|
remove(regList.at(0).key());
|
|
#else
|
|
QString emptyKey;
|
|
DWORD res = RegDeleteKey(writeHandle(), reinterpret_cast<const wchar_t *>(emptyKey.utf16()));
|
|
if (res != ERROR_SUCCESS) {
|
|
qWarning("QSettings: Failed to delete key \"%s\": %s",
|
|
regList.at(0).key().toLatin1().data(), errorCodeToString(res).toLatin1().data());
|
|
}
|
|
#endif
|
|
}
|
|
|
|
for (int i = 0; i < regList.size(); ++i)
|
|
regList[i].close();
|
|
}
|
|
|
|
void QWinSettingsPrivate::remove(const QString &uKey)
|
|
{
|
|
if (writeHandle() == 0) {
|
|
setStatus(QSettings::AccessError);
|
|
return;
|
|
}
|
|
|
|
QString rKey = escapedKey(uKey);
|
|
|
|
// try to delete value bar in key foo
|
|
LONG res;
|
|
HKEY handle = openKey(writeHandle(), registryPermissions, keyPath(rKey));
|
|
if (handle != 0) {
|
|
res = RegDeleteValue(handle, reinterpret_cast<const wchar_t *>(keyName(rKey).utf16()));
|
|
RegCloseKey(handle);
|
|
}
|
|
|
|
// try to delete key foo/bar and all subkeys
|
|
handle = openKey(writeHandle(), registryPermissions, rKey);
|
|
if (handle != 0) {
|
|
deleteChildGroups(handle);
|
|
|
|
if (rKey.isEmpty()) {
|
|
QStringList childKeys = childKeysOrGroups(handle, QSettingsPrivate::ChildKeys);
|
|
|
|
for (int i = 0; i < childKeys.size(); ++i) {
|
|
QString group = childKeys.at(i);
|
|
|
|
LONG res = RegDeleteValue(handle, reinterpret_cast<const wchar_t *>(group.utf16()));
|
|
if (res != ERROR_SUCCESS) {
|
|
qWarning("QSettings: RegDeleteValue failed on subkey \"%s\": %s",
|
|
group.toLatin1().data(), errorCodeToString(res).toLatin1().data());
|
|
}
|
|
}
|
|
} else {
|
|
#if defined(Q_OS_WINCE)
|
|
// For WinCE always Close the handle first.
|
|
RegCloseKey(handle);
|
|
#endif
|
|
res = RegDeleteKey(writeHandle(), reinterpret_cast<const wchar_t *>(rKey.utf16()));
|
|
|
|
if (res != ERROR_SUCCESS) {
|
|
qWarning("QSettings: RegDeleteKey failed on key \"%s\": %s",
|
|
rKey.toLatin1().data(), errorCodeToString(res).toLatin1().data());
|
|
}
|
|
}
|
|
RegCloseKey(handle);
|
|
}
|
|
}
|
|
|
|
static bool stringContainsNullChar(const QString &s)
|
|
{
|
|
for (int i = 0; i < s.length(); ++i) {
|
|
if (s.at(i).unicode() == 0)
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void QWinSettingsPrivate::set(const QString &uKey, const QVariant &value)
|
|
{
|
|
if (writeHandle() == 0) {
|
|
setStatus(QSettings::AccessError);
|
|
return;
|
|
}
|
|
|
|
QString rKey = escapedKey(uKey);
|
|
|
|
HKEY handle = createOrOpenKey(writeHandle(), registryPermissions, keyPath(rKey));
|
|
if (handle == 0) {
|
|
setStatus(QSettings::AccessError);
|
|
return;
|
|
}
|
|
|
|
DWORD type;
|
|
QByteArray regValueBuff;
|
|
|
|
// Determine the type
|
|
switch (value.type()) {
|
|
case QVariant::List:
|
|
case QVariant::StringList: {
|
|
// If none of the elements contains '\0', we can use REG_MULTI_SZ, the
|
|
// native registry string list type. Otherwise we use REG_BINARY.
|
|
type = REG_MULTI_SZ;
|
|
QStringList l = variantListToStringList(value.toList());
|
|
QStringList::const_iterator it = l.constBegin();
|
|
for (; it != l.constEnd(); ++it) {
|
|
if ((*it).length() == 0 || stringContainsNullChar(*it)) {
|
|
type = REG_BINARY;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (type == REG_BINARY) {
|
|
QString s = variantToString(value);
|
|
regValueBuff = QByteArray((const char*)s.utf16(), s.length() * 2);
|
|
} else {
|
|
QStringList::const_iterator it = l.constBegin();
|
|
for (; it != l.constEnd(); ++it) {
|
|
const QString &s = *it;
|
|
regValueBuff += QByteArray((const char*)s.utf16(), (s.length() + 1) * 2);
|
|
}
|
|
regValueBuff.append((char)0);
|
|
regValueBuff.append((char)0);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case QVariant::Int:
|
|
case QVariant::UInt: {
|
|
type = REG_DWORD;
|
|
qint32 i = value.toInt();
|
|
regValueBuff = QByteArray((const char*)&i, sizeof(qint32));
|
|
break;
|
|
}
|
|
|
|
case QVariant::LongLong:
|
|
case QVariant::ULongLong: {
|
|
type = REG_QWORD;
|
|
qint64 i = value.toLongLong();
|
|
regValueBuff = QByteArray((const char*)&i, sizeof(qint64));
|
|
break;
|
|
}
|
|
|
|
case QVariant::ByteArray:
|
|
// fallthrough intended
|
|
|
|
default: {
|
|
// If the string does not contain '\0', we can use REG_SZ, the native registry
|
|
// string type. Otherwise we use REG_BINARY.
|
|
QString s = variantToString(value);
|
|
type = stringContainsNullChar(s) ? REG_BINARY : REG_SZ;
|
|
if (type == REG_BINARY) {
|
|
regValueBuff = QByteArray((const char*)s.utf16(), s.length() * 2);
|
|
} else {
|
|
regValueBuff = QByteArray((const char*)s.utf16(), (s.length() + 1) * 2);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// set the value
|
|
LONG res = RegSetValueEx(handle, reinterpret_cast<const wchar_t *>(keyName(rKey).utf16()), 0, type,
|
|
reinterpret_cast<const unsigned char*>(regValueBuff.constData()),
|
|
regValueBuff.size());
|
|
|
|
if (res == ERROR_SUCCESS) {
|
|
deleteWriteHandleOnExit = false;
|
|
} else {
|
|
qWarning("QSettings: failed to set subkey \"%s\": %s",
|
|
rKey.toLatin1().data(), errorCodeToString(res).toLatin1().data());
|
|
setStatus(QSettings::AccessError);
|
|
}
|
|
|
|
RegCloseKey(handle);
|
|
}
|
|
|
|
bool QWinSettingsPrivate::get(const QString &uKey, QVariant *value) const
|
|
{
|
|
QString rKey = escapedKey(uKey);
|
|
|
|
for (int i = 0; i < regList.size(); ++i) {
|
|
HKEY handle = regList.at(i).handle();
|
|
if (handle != 0 && readKey(handle, rKey, value))
|
|
return true;
|
|
|
|
if (!fallbacks)
|
|
return false;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
QStringList QWinSettingsPrivate::children(const QString &uKey, ChildSpec spec) const
|
|
{
|
|
NameSet result;
|
|
QString rKey = escapedKey(uKey);
|
|
|
|
for (int i = 0; i < regList.size(); ++i) {
|
|
HKEY parent_handle = regList.at(i).handle();
|
|
if (parent_handle == 0)
|
|
continue;
|
|
HKEY handle = openKey(parent_handle, KEY_READ, rKey);
|
|
if (handle == 0)
|
|
continue;
|
|
|
|
if (spec == AllKeys) {
|
|
NameSet keys;
|
|
allKeys(handle, QLatin1String(""), &keys);
|
|
mergeKeySets(&result, keys);
|
|
} else { // ChildGroups or ChildKeys
|
|
QStringList names = childKeysOrGroups(handle, spec);
|
|
mergeKeySets(&result, names);
|
|
}
|
|
|
|
RegCloseKey(handle);
|
|
|
|
if (!fallbacks)
|
|
return result.keys();
|
|
}
|
|
|
|
return result.keys();
|
|
}
|
|
|
|
void QWinSettingsPrivate::clear()
|
|
{
|
|
remove(QString());
|
|
deleteWriteHandleOnExit = true;
|
|
}
|
|
|
|
void QWinSettingsPrivate::sync()
|
|
{
|
|
RegFlushKey(writeHandle());
|
|
}
|
|
|
|
void QWinSettingsPrivate::flush()
|
|
{
|
|
// Windows does this for us.
|
|
}
|
|
|
|
QString QWinSettingsPrivate::fileName() const
|
|
{
|
|
if (regList.isEmpty())
|
|
return QString();
|
|
|
|
const RegistryKey &key = regList.at(0);
|
|
QString result;
|
|
if (key.parentHandle() == HKEY_CURRENT_USER)
|
|
result = QLatin1String("\\HKEY_CURRENT_USER\\");
|
|
else
|
|
result = QLatin1String("\\HKEY_LOCAL_MACHINE\\");
|
|
|
|
return result + regList.at(0).key();
|
|
}
|
|
|
|
bool QWinSettingsPrivate::isWritable() const
|
|
{
|
|
return writeHandle() != 0;
|
|
}
|
|
|
|
QSettingsPrivate *QSettingsPrivate::create(QSettings::Format format, QSettings::Scope scope,
|
|
const QString &organization, const QString &application)
|
|
{
|
|
if (format == QSettings::NativeFormat) {
|
|
return new QWinSettingsPrivate(scope, organization, application);
|
|
} else {
|
|
return new QConfFileSettingsPrivate(format, scope, organization, application);
|
|
}
|
|
}
|
|
|
|
QSettingsPrivate *QSettingsPrivate::create(const QString &fileName, QSettings::Format format)
|
|
{
|
|
if (format == QSettings::NativeFormat) {
|
|
return new QWinSettingsPrivate(fileName);
|
|
} else {
|
|
return new QConfFileSettingsPrivate(fileName, format);
|
|
}
|
|
}
|
|
|
|
QT_END_NAMESPACE
|
|
#endif // QT_NO_SETTINGS
|