From d26972aaac0fa0ec67b9958a79eff90e09d3df30 Mon Sep 17 00:00:00 2001
From: trialuser02 <trialuser02@90c681e8-e032-0410-971d-27865f9a5e38>
Date: Mon, 13 May 2013 14:27:34 +0000
Subject: added cache for general plugins

git-svn-id: http://svn.code.sf.net/p/qmmp-dev/code/trunk/qmmp@3464 90c681e8-e032-0410-971d-27865f9a5e38
---
 src/qmmpui/qmmpuiplugincache.cpp | 155 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 155 insertions(+)
 create mode 100644 src/qmmpui/qmmpuiplugincache.cpp

(limited to 'src/qmmpui/qmmpuiplugincache.cpp')

diff --git a/src/qmmpui/qmmpuiplugincache.cpp b/src/qmmpui/qmmpuiplugincache.cpp
new file mode 100644
index 000000000..ff804c131
--- /dev/null
+++ b/src/qmmpui/qmmpuiplugincache.cpp
@@ -0,0 +1,155 @@
+/***************************************************************************
+ *   Copyright (C) 2013 by Ilya Kotov                                      *
+ *   forkotov02@hotmail.ru                                                 *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
+ ***************************************************************************/
+
+#include <QStringList>
+#include <QDateTime>
+#include <QFileInfo>
+#include <QPluginLoader>
+#include <QApplication>
+#include <QTranslator>
+#include "generalfactory.h"
+#include "qmmpuiplugincache_p.h"
+
+QmmpUiPluginCache::QmmpUiPluginCache(const QString &file, QSettings *settings)
+{
+    m_error = false;
+    m_instance = 0;
+    m_generalFactory = 0;
+    m_priority = 0;
+    bool update = false;
+    QFileInfo info(file);
+    m_path = info.QFileInfo::canonicalFilePath();
+
+    settings->beginGroup("PluginCache");
+    QString key = m_path;
+#ifndef Q_OS_WIN
+    key.remove(0,1);
+#endif
+    if(settings->allKeys().contains(key))
+
+    {
+        QStringList values = settings->value(m_path).toStringList();
+        if(values.count() != 3)
+            update = true;
+        else
+        {
+            m_shortName = values.at(0);
+            m_priority = values.at(1).toInt();
+            update = (info.lastModified().toString(Qt::ISODate) != values.at(2));
+        }
+    }
+    else
+        update = true;
+
+
+    if(update)
+    {
+        if(GeneralFactory *factory = generalFactory())
+        {
+            m_shortName = factory->properties().shortName;
+            m_priority = 0;
+        }
+        else
+        {
+            qWarning("QmmpUiPluginCache: unknown plugin type: %s", qPrintable(m_path));
+            m_error = true;
+        }
+
+        if (!m_error)
+        {
+            QStringList values;
+            values << m_shortName;
+            values << QString::number(m_priority);
+            values << info.lastModified().toString(Qt::ISODate);
+            settings->setValue(m_path, values);
+            qDebug("QmmpUiPluginCache: added cache item \"%s=%s\"",
+                   qPrintable(info.fileName()), qPrintable(values.join(",")));
+        }
+    }
+    settings->endGroup();
+}
+
+const QString QmmpUiPluginCache::shortName() const
+{
+    return m_shortName;
+}
+
+const QString QmmpUiPluginCache::file() const
+{
+    return m_path;
+}
+
+int QmmpUiPluginCache::priority() const
+{
+    return m_priority;
+}
+
+bool QmmpUiPluginCache::hasError() const
+{
+    return m_error;
+}
+
+GeneralFactory *QmmpUiPluginCache::generalFactory()
+{
+    if(!m_generalFactory)
+    {
+        m_generalFactory = qobject_cast<GeneralFactory *> (instance());
+        if(m_generalFactory)
+            qApp->installTranslator(m_generalFactory->createTranslator(qApp));
+    }
+    return m_generalFactory;
+}
+
+QObject *QmmpUiPluginCache::instance()
+{
+    if(m_error)
+        return 0;
+    if(m_instance)
+        return m_instance;
+    QPluginLoader loader(m_path);
+    m_instance = loader.instance();
+    if (loader.isLoaded())
+        qDebug("QmmpUiPluginCache: loaded plugin %s", qPrintable(QFileInfo(m_path).fileName()));
+    else
+    {
+        m_error = true;
+        qWarning("QmmpUiPluginCache: error: %s", qPrintable(loader.errorString ()));
+    }
+    return m_instance;
+}
+
+void QmmpUiPluginCache::cleanup(QSettings *settings)
+{
+    settings->beginGroup("PluginCache");
+
+    foreach (QString key, settings->allKeys())
+    {
+#ifdef Q_OS_WIN
+        if(!QFile::exists(key))
+#else
+        if(!QFile::exists("/" + key))
+#endif
+        {
+            settings->remove(key);
+            qDebug("QmmpUiPluginCache: removed key %s", qPrintable(key));
+        }
+    }
+    settings->endGroup();
+}
-- 
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