Introduce new Beautifier plug-in

Beautifier is a plug-in for source code beautifiers.
Currently Artistic Style, Clang-format and Uncrustify are supported.

Task-number: QTCREATORBUG-7489
Change-Id: I8dde9a8ba6a6a55537bfd450ec82ef966ed283c0
Reviewed-by: David Schulz <david.schulz@digia.com>

src/plugins/beautifier/clangformat/clangformat.cpp

@@ -0,0 +1,149 @@
+/**************************************************************************
+**
+** Copyright (c) 2014 Lorenz Haas
+** 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 "clangformat.h"
+
+#include "clangformatconstants.h"
+#include "clangformatoptionspage.h"
+#include "clangformatsettings.h"
+
+#include "../beautifierconstants.h"
+#include "../beautifierplugin.h"
+
+#include <coreplugin/actionmanager/actioncontainer.h>
+#include <coreplugin/actionmanager/actionmanager.h>
+#include <coreplugin/actionmanager/command.h>
+#include <coreplugin/coreconstants.h>
+#include <coreplugin/editormanager/ieditor.h>
+#include <coreplugin/icontext.h>
+#include <coreplugin/icore.h>
+#include <cppeditor/cppeditorconstants.h>
+#include <texteditor/basetexteditor.h>
+
+#include <QAction>
+#include <QMenu>
+
+namespace Beautifier {
+namespace Internal {
+namespace ClangFormat {
+
+ClangFormat::ClangFormat(QObject *parent) :
+    BeautifierAbstractTool(parent),
+    m_settings(new ClangFormatSettings)
+{
+}
+
+ClangFormat::~ClangFormat()
+{
+    delete m_settings;
+}
+
+bool ClangFormat::initialize()
+{
+    Core::ActionContainer *menu = Core::ActionManager::createMenu(Constants::ClangFormat::MENU_ID);
+    menu->menu()->setTitle(QLatin1String("ClangFormat"));
+
+    m_formatFile = new QAction(tr("Format Current File"), this);
+    Core::Command *cmd
+            = Core::ActionManager::registerAction(m_formatFile,
+                                                  Constants::ClangFormat::ACTION_FORMATFILE,
+                                                  Core::Context(Core::Constants::C_GLOBAL));
+    menu->addAction(cmd);
+    connect(m_formatFile, SIGNAL(triggered()), this, SLOT(formatFile()));
+
+    m_formatRange = new QAction(tr("Format Selected Text"), this);
+    cmd = Core::ActionManager::registerAction(m_formatRange,
+                                              Constants::ClangFormat::ACTION_FORMATSELECTED,
+                                              Core::Context(Core::Constants::C_GLOBAL));
+    menu->addAction(cmd);
+    connect(m_formatRange, SIGNAL(triggered()), this, SLOT(formatSelectedText()));
+
+    Core::ActionManager::actionContainer(Constants::MENU_ID)->addMenu(menu);
+
+    return true;
+}
+
+void ClangFormat::updateActions(Core::IEditor *editor)
+{
+    const bool enabled = (editor && editor->id() == CppEditor::Constants::CPPEDITOR_ID);
+    m_formatFile->setEnabled(enabled);
+    m_formatRange->setEnabled(enabled);
+}
+
+QList<QObject *> ClangFormat::autoReleaseObjects()
+{
+    ClangFormatOptionsPage *optionsPage = new ClangFormatOptionsPage(m_settings, this);
+    return QList<QObject *>() << optionsPage;
+}
+
+void ClangFormat::formatFile()
+{
+    BeautifierPlugin::formatCurrentFile(command());
+}
+
+void ClangFormat::formatSelectedText()
+{
+    TextEditor::BaseTextEditor *editor
+            = qobject_cast<TextEditor::BaseTextEditor *>(Core::EditorManager::currentEditor());
+    if (!editor)
+        return;
+
+    QTextCursor tc = editor->editorWidget()->textCursor();
+    if (tc.hasSelection()) {
+        const int offset = tc.selectionStart();
+        const int length = tc.selectionEnd() - offset;
+        BeautifierPlugin::formatCurrentFile(command(offset, length));
+    } else if (m_settings->formatEntireFileFallback()) {
+        formatFile();
+    }
+}
+
+QStringList ClangFormat::command(int offset, int length) const
+{
+    QStringList command;
+    command << m_settings->command();
+    command << QLatin1String("-i");
+    if (m_settings->usePredefinedStyle()) {
+        command << QLatin1String("-style=") + m_settings->predefinedStyle();
+    } else {
+        command << QLatin1String("-style={") + m_settings->style(
+                       m_settings->customStyle()).remove(QLatin1Char('\n')) + QLatin1String("}");
+    }
+    if (offset != -1) {
+        command << QLatin1String("-offset=") + QString::number(offset);
+        command << QLatin1String("-length=") + QString::number(length);
+    }
+    command << QLatin1String("%file");
+
+    return command;
+}
+
+} // namespace ClangFormat
+} // namespace Internal
+} // namespace Beautifier