replace QFile::copy with customed one

RedPandaIDE/project.cpp

@@ -864,9 +864,7 @@ bool Project::saveAsTemplate(const QString &templateFolder,
     ini->SetValue("Template", "Description", description.toUtf8());
     if (fileExists(mOptions.icon)) {
         QString iconName = extractFileName(mOptions.icon);
-        if (dir.exists(iconName))
-            dir.remove(iconName);
-        QFile::copy(mOptions.icon, dir.absoluteFilePath(iconName));
+        copyFile(mOptions.icon, dir.absoluteFilePath(iconName),true);
         if (dir.exists(iconName))
             ini->SetValue("Template", "Icon", iconName.toUtf8());
     }
@@ -915,9 +913,7 @@ bool Project::saveAsTemplate(const QString &templateFolder,
         const PProjectUnit& unit=mUnits[i];
         QString unitName = extractFileName(unit->fileName());
         QByteArray section = toByteArray(QString("Unit%1").arg(i));
-        if (dir.exists(unitName))
-            dir.remove(unitName);
-        if (!QFile::copy(unit->fileName(), dir.absoluteFilePath(unitName))) {
+        if (!copyFile(unit->fileName(), dir.absoluteFilePath(unitName),true)) {
             QMessageBox::warning(nullptr,
                                   tr("Warning"),
                                   tr("Can't save file %1").arg(dir.absoluteFilePath(unitName)),

RedPandaIDE/utils.cpp

@@ -1198,3 +1198,33 @@ int countLeadingWhitespaceChars(const QString &line)
     }
     return n;
 }
+
+bool copyFile(const QString &fromPath, const QString &toPath, bool overwrite)
+{
+    QFile  fromFile(fromPath);
+    QFile toFile(toPath);
+    if (!fromFile.exists())
+        return false;
+    if (toFile.exists()) {
+        if (!overwrite)
+            return false;
+        if (!toFile.remove())
+            return false;
+    }
+
+    if (!fromFile.open(QFile::ReadOnly))
+        return false;
+    if (!toFile.open(QFile::WriteOnly | QFile::Truncate))
+        return false;
+
+    int bufferSize=64*1024;
+    char buffer[bufferSize];
+
+    while (!fromFile.atEnd()) {
+        int readed = fromFile.read(buffer,bufferSize);
+        toFile.write(buffer,readed);
+    }
+    toFile.close();
+    fromFile.close();
+    return true;
+}

RedPandaIDE/utils.h

@@ -246,6 +246,7 @@ float pointToPixel(float point, float dpi);
 float pixelToPoint(float pixel);
 
 void copyFolder(const QString &fromDir, const QString& toDir);
+bool copyFile(const QString &fromFile, const QString& toFile, bool overwrite);
 
 
 /**