From b9865ed4f1eaccad3063e726409ea221a7a67441 Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Sun, 13 Sep 2015 21:25:18 +0200
Subject: [PATCH] + fixes #0002209: Files that have a dot in name do not get
 the extension

---
 src/Gui/FileDialog.cpp | 21 +++++++++++++++++++--
 src/Gui/FileDialog.h   |  3 +++
 2 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/src/Gui/FileDialog.cpp b/src/Gui/FileDialog.cpp
index 2372dad2e..39aff4a0a 100644
--- a/src/Gui/FileDialog.cpp
+++ b/src/Gui/FileDialog.cpp
@@ -69,6 +69,21 @@ void FileDialog::onSelectedFilter(const QString& filter)
     }
 }
 
+bool FileDialog::hasSuffix(const QString& ext) const
+{
+    QRegExp rx(QString::fromLatin1("\\*.(%1)\\W").arg(ext));
+    rx.setCaseSensitivity(Qt::CaseInsensitive);
+    QStringList filters = nameFilters();
+    for (QStringList::iterator it = filters.begin(); it != filters.end(); ++it) {
+        QString str = *it;
+        if (rx.indexIn(str) != -1) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
 void FileDialog::accept()
 {
     // When saving to a file make sure that the entered filename ends with the selected
@@ -78,8 +93,10 @@ void FileDialog::accept()
         if (!files.isEmpty()) {
             QString ext = this->defaultSuffix();
             QString file = files.front();
-            QFileInfo fi(file);
-            if (!ext.isEmpty() && fi.suffix().isEmpty()) {
+            QString suffix = QFileInfo(file).suffix();
+            // #0001928: do not add a suffix if a file with suffix is entered
+            // #0002209: make sure that the entered suffix is part of one of the filters
+            if (!ext.isEmpty() && (suffix.isEmpty() || !hasSuffix(suffix))) {
                 file = QString::fromLatin1("%1.%2").arg(file).arg(ext);
                 // That's the built-in line edit
                 QLineEdit* fileNameEdit = this->findChild<QLineEdit*>(QString::fromLatin1("fileNameEdit"));
diff --git a/src/Gui/FileDialog.h b/src/Gui/FileDialog.h
index b03279d32..1ba5714e2 100644
--- a/src/Gui/FileDialog.h
+++ b/src/Gui/FileDialog.h
@@ -62,6 +62,9 @@ public:
 
     void accept();
 
+private:
+    bool hasSuffix(const QString&) const;
+
 private Q_SLOTS:
     void onSelectedFilter(const QString&);
 };