1 files changed, 145 insertions, 0 deletions
diff --git a/src/lib/corelib/tools/qbspluginmanager.cpp b/src/lib/corelib/tools/qbspluginmanager.cpp
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+++ b/src/lib/corelib/tools/qbspluginmanager.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qbs.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qbspluginmanager.h"
+
+#include <logging/logger.h>
+#include <logging/translator.h>
+#include <tools/hostosinfo.h>
+#include <tools/qbsassert.h>
+#include <tools/qttools.h>
+
+#include <QtCore/qdiriterator.h>
+#include <QtCore/qlibrary.h>
+
+#include <mutex>
+
+namespace qbs {
+namespace Internal {
+
+QbsPluginManager::QbsPluginManager()
+{
+}
+
+QbsPluginManager::~QbsPluginManager()
+{
+    unloadStaticPlugins();
+
+    for (QLibrary * const lib : qAsConst(m_libs)) {
+        QbsPluginUnloadFunction unload = reinterpret_cast<QbsPluginUnloadFunction>(
+                    lib->resolve("QbsPluginUnload"));
+        if (unload)
+            unload();
+        lib->unload();
+        delete lib;
+    }
+}
+
+QbsPluginManager *QbsPluginManager::instance()
+{
+    static QbsPluginManager instance;
+    return &instance;
+}
+
+void QbsPluginManager::registerStaticPlugin(QbsPluginLoadFunction load,
+                                            QbsPluginUnloadFunction unload)
+{
+    auto begin = m_staticPlugins.cbegin(), end = m_staticPlugins.cend();
+    if (std::find_if(begin, end, [&load](const QbsPlugin &p) { return p.load == load; }) == end)
+        m_staticPlugins.push_back(QbsPlugin { load, unload, false });
+}
+
+void QbsPluginManager::loadStaticPlugins()
+{
+    for (const auto &plugin : m_staticPlugins) {
+        if (!plugin.loaded && plugin.load)
+            plugin.load();
+    }
+}
+
+void QbsPluginManager::unloadStaticPlugins()
+{
+    for (auto &plugin : m_staticPlugins) {
+        if (plugin.loaded && plugin.unload)
+            plugin.unload();
+    }
+
+    m_staticPlugins.clear();
+}
+
+void QbsPluginManager::loadPlugins(const QStringList &pluginPaths, const Logger &logger)
+{
+    QStringList filters;
+
+    if (HostOsInfo::isWindowsHost())
+        filters << QLatin1String("*.dll");
+    else if (HostOsInfo::isMacosHost())
+        filters << QLatin1String("*.dylib");
+    else
+        filters << QLatin1String("*.so");
+
+    for (const QString &pluginPath : pluginPaths) {
+        logger.qbsTrace() << QString::fromLatin1("plugin manager: 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("plugin manager: Cannot load plugin '%1': %2")
+                                       .arg(QDir::toNativeSeparators(fileName), lib->errorString());
+                continue;
+            }
+
+            QbsPluginLoadFunction load = reinterpret_cast<QbsPluginLoadFunction>(
+                        lib->resolve("QbsPluginLoad"));
+            if (load) {
+                load();
+                logger.qbsTrace() << QString::fromLatin1("pluginmanager: plugin '%1' loaded.")
+                                     .arg(QDir::toNativeSeparators(fileName));
+                m_libs.push_back(lib.take());
+            } else {
+                logger.qbsWarning() << Tr::tr("plugin manager: not a qbs plugin");
+            }
+        }
+    }
+}
+
+} // namespace Internal
+} // namespace qbs