Core: Add a basic extension for the JsExpander

This adds a "Utils" object to the Js runtime offered by the
JsExpander that adds some useful functions.

Mostly file name mangling and finding preferred extension
from the MIME type database.

Change-Id: I907dae7f295167667ac2ae81461bbff16dc98ef4
Reviewed-by: Daniel Teske <daniel.teske@digia.com>

src/plugins/coreplugin/corejsextensions.cpp

@@ -0,0 +1,121 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#include "corejsextensions.h"
+
+#include "mimedatabase.h"
+
+#include <utils/fileutils.h>
+#include <utils/qtcassert.h>
+
+#include <QDir>
+#include <QTemporaryFile>
+#include <QVariant>
+
+namespace Core {
+namespace Internal {
+
+QString UtilsJsExtension::toNativeSeparators(const QString &in) const
+{
+    return QDir::toNativeSeparators(in);
+}
+
+QString UtilsJsExtension::fromNativeSeparators(const QString &in) const
+{
+    return QDir::fromNativeSeparators(in);
+}
+
+QString UtilsJsExtension::baseName(const QString &in) const
+{
+    QFileInfo fi(in);
+    return fi.baseName();
+}
+
+QString UtilsJsExtension::completeBaseName(const QString &in) const
+{
+    QFileInfo fi(in);
+    return fi.completeBaseName();
+}
+
+QString UtilsJsExtension::suffix(const QString &in) const
+{
+    QFileInfo fi(in);
+    return fi.suffix();
+}
+
+QString UtilsJsExtension::completeSuffix(const QString &in) const
+{
+    QFileInfo fi(in);
+    return fi.completeSuffix();
+}
+
+QString UtilsJsExtension::path(const QString &in) const
+{
+    QFileInfo fi(in);
+    return fi.path();
+}
+
+QString UtilsJsExtension::absoluteFilePath(const QString &in) const
+{
+    QFileInfo fi(in);
+    return fi.absoluteFilePath();
+}
+
+QString UtilsJsExtension::preferredSuffix(const QString &mimetype) const
+{
+    return Core::MimeDatabase::preferredSuffixByType(mimetype);
+}
+
+QString UtilsJsExtension::fileName(const QString &path, const QString &extension) const
+{
+    return Utils::FileName::fromString(path, extension).toString();
+}
+
+QString UtilsJsExtension::mktemp(const QString &pattern) const
+{
+    QString tmp = pattern;
+    if (tmp.isEmpty())
+        tmp = QStringLiteral("qt_temp.XXXXXX");
+    QFileInfo fi(tmp);
+    if (!fi.isAbsolute()) {
+        QString tempPattern = QDir::tempPath();
+        if (!tempPattern.endsWith(QLatin1Char('/')))
+            tempPattern += QLatin1Char('/');
+        tmp = tempPattern + tmp;
+    }
+
+    QTemporaryFile file(tmp);
+    file.setAutoRemove(false);
+    QTC_ASSERT(file.open(), return QString());
+    file.close();
+    return file.fileName();
+}
+
+} // namespace Internal
+} // namespace Core