Moved code for accessing Windows Registry to src/shared.

src/shared/registryaccess/registryaccess.cpp

@@ -0,0 +1,143 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** Commercial Usage
+**
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** GNU Lesser General Public License Usage
+**
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+**
+**************************************************************************/
+
+#include "registryaccess.h"
+
+#include <QtGui/QApplication>
+
+#include <QtCore/QDir>
+#include <QtCore/QTextStream>
+
+namespace RegistryAccess {
+
+static QString winErrorMessage(unsigned long error)
+{
+    QString rc = QString::fromLatin1("#%1: ").arg(error);
+    ushort *lpMsgBuf;
+
+    const int len = FormatMessage(
+            FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
+            NULL, error, 0, (LPTSTR)&lpMsgBuf, 0, NULL);
+    if (len) {
+       rc = QString::fromUtf16(lpMsgBuf, len);
+        LocalFree(lpMsgBuf);
+    } else {
+        rc += QString::fromLatin1("<unknown error>");
+    }
+    return rc;
+}
+
+QString msgFunctionFailed(const char *f, unsigned long error)
+{
+    return QString::fromLatin1("'%1' failed: %2").arg(QLatin1String(f), winErrorMessage(error));
+}
+
+static bool registryReadBinaryKey(HKEY handle, // HKEY_LOCAL_MACHINE, etc.
+                                  const WCHAR *valueName,
+                                  QByteArray *data,
+                                  QString *errorMessage)
+{
+    data->clear();
+    DWORD type;
+    DWORD size;
+    // get size and retrieve
+    LONG rc = RegQueryValueEx(handle, valueName, 0, &type, 0, &size);
+    if (rc != ERROR_SUCCESS) {
+        *errorMessage = msgRegistryOperationFailed("read", valueName, msgFunctionFailed("RegQueryValueEx1", rc));
+        return false;
+    }
+    BYTE *dataC = new BYTE[size + 1];
+    // Will be Utf16 in case of a string
+    rc = RegQueryValueEx(handle, valueName, 0, &type, dataC, &size);
+    if (rc != ERROR_SUCCESS) {
+        *errorMessage = msgRegistryOperationFailed("read", valueName, msgFunctionFailed("RegQueryValueEx2", rc));
+        return false;
+    }
+    *data = QByteArray(reinterpret_cast<const char*>(dataC), size);
+    delete [] dataC;
+    return true;
+}
+
+bool registryReadStringKey(HKEY handle, // HKEY_LOCAL_MACHINE, etc.
+                           const WCHAR *valueName,
+                           QString *s,
+                           QString *errorMessage)
+{
+    QByteArray data;
+    if (!registryReadBinaryKey(handle, valueName, &data, errorMessage))
+        return false;
+    data += '\0';
+    data += '\0';
+    *s = QString::fromUtf16(reinterpret_cast<const unsigned short*>(data.data()));
+    return true;
+}
+
+bool openRegistryKey(HKEY category, // HKEY_LOCAL_MACHINE, etc.
+                     const WCHAR *key,
+                     bool readWrite,
+                     HKEY *keyHandle,
+                     QString *errorMessage)
+{
+
+    REGSAM accessRights = KEY_READ;
+    if (readWrite)
+         accessRights |= KEY_SET_VALUE;
+    const LONG rc = RegOpenKeyEx(category, key, 0, accessRights, keyHandle);
+    if (rc != ERROR_SUCCESS) {
+        *errorMessage = msgFunctionFailed("RegOpenKeyEx", rc);
+        return false;
+    }
+    return true;
+}
+
+// Installation helpers: Format the debugger call with placeholders for PID and event
+// '"[path]\qtcdebugger" [-wow] %ld %ld'.
+
+QString debuggerCall(const QString &additionalOption)
+{
+    QString rc;
+    QTextStream str(&rc);
+    str << '"' << QDir::toNativeSeparators(QApplication::applicationDirPath() + QLatin1Char('/')
+                                           + debuggerApplicationFileC + QLatin1String(".exe")) << '"';
+    if (!additionalOption.isEmpty())
+        str << ' ' << additionalOption;
+    str << " %ld %ld";
+    return rc;
+}
+
+bool isRegistered(HKEY handle, const QString &call, QString *errorMessage, QString *oldDebugger)
+{
+    QString registeredDebugger;
+    registryReadStringKey(handle, debuggerRegistryValueNameC, &registeredDebugger, errorMessage);
+    if (oldDebugger)
+        *oldDebugger = registeredDebugger;
+    return !registeredDebugger.compare(call, Qt::CaseInsensitive);
+}
+
+} // namespace RegistryAccess