Fixed cppcheck-opensource#3192 (GUI: Allow opening project file without extra parameter from CLI)

Author: nemaakhilesh

gui/mainwindow.cpp

@@ -214,21 +214,26 @@ MainWindow::~MainWindow()
 
 void MainWindow::HandleCLIParams(const QStringList &params)
 {
+    int index;
     if (params.contains("-p")) {
-        const int ind = params.indexOf("-p");
-        if ((ind + 1) < params.length())
-            LoadProjectFile(params[ind + 1]);
+        index = params.indexOf("-p");
+        if ((index + 1) < params.length())
+            LoadProjectFile(params[index + 1]);
+    } else if ((index = params.indexOf(QRegExp(".*\\.cppcheck$", Qt::CaseInsensitive), 0)) >= 0 && index < params.length() && QFile(params[index]).exists()) {
+        LoadProjectFile(params[index]);
+    } else if ((index = params.indexOf(QRegExp(".*\\.xml$", Qt::CaseInsensitive), 0)) >= 0 && index < params.length() && QFile(params[index]).exists()) {
+        LoadResults(params[index]);
     } else if (params.contains("-l")) {
         QString logFile;
-        const int ind = params.indexOf("-l");
-        if ((ind + 1) < params.length())
-            logFile = params[ind + 1];
+        index = params.indexOf("-l");
+        if ((index + 1) < params.length())
+            logFile = params[index + 1];
 
         if (params.contains("-d")) {
             QString checkedDir;
-            const int ind = params.indexOf("-d");
-            if ((ind + 1) < params.length())
-                checkedDir = params[ind + 1];
+            index = params.indexOf("-d");
+            if ((index + 1) < params.length())
+                checkedDir = params[index + 1];
 
             LoadResults(logFile, checkedDir);
         } else {