Split apart debugger options pages, allow specifying a path to CDB.

Modify engine creation funcs to populate a list of option pages
to be able to handle engine enabling independently of the
actual engine creation.

src/plugins/debugger/cdb/cdboptions.cpp

@@ -0,0 +1,113 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact:  Qt Software Information (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 qt-sales@nokia.com.
+**
+**************************************************************************/
+
+#include "cdboptions.h"
+#include <QtCore/QSettings>
+#include <QtCore/QDir>
+#include <QtCore/QFileInfo>
+
+static const char *settingsGroupC = "CDB";
+static const char *enabledKeyC = "enabled";
+static const char *pathKeyC = "path";
+
+namespace Debugger {
+namespace Internal {
+
+CdbOptions::CdbOptions() :
+    enabled(false)
+{
+}
+
+void CdbOptions::clear()
+{
+    enabled = false;
+    path.clear();
+}
+
+void CdbOptions::fromSettings(const QSettings *s)
+{
+    clear();
+    // Is this the first time we are called ->
+    // try to find automatically
+    const QString keyRoot = QLatin1String(settingsGroupC) + QLatin1Char('/');
+    const QString enabledKey = keyRoot + QLatin1String(enabledKeyC);
+    const bool firstTime = !s->contains(enabledKey);
+    if (firstTime) {
+        enabled = autoDetectPath(&path);
+        return;
+    }
+    enabled = s->value(enabledKey, false).toBool();
+    path = s->value(keyRoot + QLatin1String(pathKeyC), QString()).toString();
+}
+
+void CdbOptions::toSettings(QSettings *s) const
+{
+    s->beginGroup(QLatin1String(settingsGroupC));
+    s->setValue(QLatin1String(enabledKeyC), enabled);
+    s->setValue(QLatin1String(pathKeyC), path);
+    s->endGroup();
+}
+
+bool CdbOptions::autoDetectPath(QString *outPath)
+{
+    // Look for $ProgramFiles/"Debugging Tools For Windows" and its
+    // :" (x86)", " (x64)" variations
+    static const char *postFixes[] = { " (x86)", " (x64)" };
+
+    outPath->clear();
+    const QByteArray programDirB = qgetenv("ProgramFiles");
+    if (programDirB.isEmpty())
+        return false;
+
+    const QString programDir = QString::fromLocal8Bit(programDirB) + QDir::separator();
+    const QString installDir = QLatin1String("Debugging Tools For Windows");
+    QString path = programDir + installDir;
+    if (QFileInfo(path).isDir()) {
+        *outPath = QDir::toNativeSeparators(path);
+        return true;
+    }
+    const int rootLength = path.size();
+    for (int i = 0; i < sizeof(postFixes)/sizeof(const char*); i++) {
+        path.truncate(rootLength);
+        path += QLatin1String(postFixes[i]);
+        if (QFileInfo(path).isDir()) {
+            *outPath = QDir::toNativeSeparators(path);
+            return true;
+        }
+    }
+    return false;
+}
+
+bool CdbOptions::equals(const CdbOptions &rhs) const
+{
+    return enabled == rhs.enabled && path == rhs.path;
+}
+
+} // namespace Internal
+} // namespace Debugger