Move Qt profile setup into a dedicated library.

Otherwise all changes to the implementation will have to be duplicated
in IDEs.

Change-Id: I61e6d4fa1ee9b724eb5d9de9f233dc915a6c8bc3
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>

1 files changed, 115 insertions, 0 deletions

diff --git a/src/lib/corelib/tools/scannerpluginmanager.cpp b/src/lib/corelib/tools/scannerpluginmanager.cpp
new file mode 100644
index 000000000..3c5dad702
--- /dev/null
+++ b/src/lib/corelib/tools/scannerpluginmanager.cpp
@@ -0,0 +1,115 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt Build Suite.
+**
+** 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 "scannerpluginmanager.h"
+
+#include <logging/logger.h>
+#include <logging/translator.h>
+#include <tools/hostosinfo.h>
+
+#include <QCoreApplication>
+#include <QDirIterator>
+#include <QLibrary>
+
+namespace qbs {
+namespace Internal {
+
+ScannerPluginManager::~ScannerPluginManager()
+{
+    foreach (QLibrary * const lib, m_libs) {
+        lib->unload();
+        delete lib;
+    }
+}
+
+ScannerPluginManager *ScannerPluginManager::instance()
+{
+    static ScannerPluginManager scannerPlugin;
+    return &scannerPlugin;
+}
+
+ScannerPluginManager::ScannerPluginManager()
+{
+}
+
+QList<ScannerPlugin *> ScannerPluginManager::scannersForFileTag(const FileTag &fileTag)
+{
+    return instance()->m_scannerPlugins.value(fileTag);
+}
+
+void ScannerPluginManager::loadPlugins(const QStringList &pluginPaths, const Logger &logger)
+{
+    QStringList filters;
+
+    if (HostOsInfo::isWindowsHost())
+        filters << "*.dll";
+    else if (HostOsInfo::isOsxHost())
+        filters << "*.dylib";
+    else
+        filters << "*.so";
+
+    foreach (const QString &pluginPath, pluginPaths) {
+        logger.qbsTrace() << QString::fromLocal8Bit("pluginmanager: loading plugins from '%1'.")
+                             .arg(QDir::toNativeSeparators(pluginPath));
+        QDirIterator it(pluginPath, filters, QDir::Files);
+        while (it.hasNext()) {
+            const QString fileName = it.next();
+            QScopedPointer<QLibrary> lib(new QLibrary(fileName));
+            if (!lib->load()) {
+                logger.qbsWarning() << Tr::tr("pluginmanager: couldn't load plugin '%1': %2")
+                                       .arg(QDir::toNativeSeparators(fileName), lib->errorString());
+                continue;
+            }
+
+            getScanners_f getScanners = reinterpret_cast<getScanners_f>(lib->resolve("getScanners"));
+            if (!getScanners) {
+                logger.qbsWarning() << Tr::tr("pluginmanager: couldn't resolve "
+                        "symbol in '%1'.").arg(QDir::toNativeSeparators(fileName));
+                continue;
+            }
+
+            ScannerPlugin **plugins = getScanners();
+            if (plugins == 0) {
+                logger.qbsWarning() << Tr::tr("pluginmanager: no scanners "
+                        "returned from '%1'.").arg(QDir::toNativeSeparators(fileName));
+                continue;
+            }
+
+            logger.qbsTrace() << QString::fromLocal8Bit("pluginmanager: scanner plugin '%1' "
+                    "loaded.").arg(QDir::toNativeSeparators(fileName));
+
+            for (int i = 0; plugins[i] != 0; ++i)
+                m_scannerPlugins[FileTag(plugins[i]->fileTag)] += plugins[i];
+            m_libs.append(lib.take());
+        }
+    }
+}
+
+} // namespace Internal
+} // namespace qbs