From fb49e0da893f043c7b153b248763d5e13fa4c3af Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Sat, 30 Jul 2022 12:11:14 +0200
Subject: [PATCH] App: fixes #7277: Write to network drive fails on Windows

---
 src/App/Document.cpp | 38 ++++++++++++++++++++++++++++----------
 1 file changed, 28 insertions(+), 10 deletions(-)

diff --git a/src/App/Document.cpp b/src/App/Document.cpp
index f963ba961c..b881a00888 100644
--- a/src/App/Document.cpp
+++ b/src/App/Document.cpp
@@ -2614,15 +2614,37 @@ bool Document::saveToFile(const char* filename) const
     bool policy = App::GetApplication().GetParameterGroupByPath
                 ("User parameter:BaseApp/Preferences/Document")->GetBool("BackupPolicy",true);
 
-    //realpath is canonical filename i.e. without symlink
+    auto canonical_path = [](const char* filename) {
+        try {
 #ifdef FC_OS_WIN32
-    QString utf8Name = QString::fromUtf8(filename);
-    auto realpath = fs::weakly_canonical(fs::absolute(fs::path(utf8Name.toStdWString())));
-    std::string nativePath = QString::fromStdWString(realpath.native()).toStdString();
+            QString utf8Name = QString::fromUtf8(filename);
+            auto realpath = fs::weakly_canonical(fs::absolute(fs::path(utf8Name.toStdWString())));
+            std::string nativePath = QString::fromStdWString(realpath.native()).toStdString();
 #else
-    auto realpath = fs::weakly_canonical(fs::absolute(fs::path(filename)));
-    std::string nativePath = realpath.native();
+            auto realpath = fs::weakly_canonical(fs::absolute(fs::path(filename)));
+            std::string nativePath = realpath.native();
 #endif
+            // In case some folders in the path do not exist
+            auto parentPath = realpath.parent_path();
+            fs::create_directories(parentPath);
+
+            return nativePath;
+        }
+        catch (const std::exception&) {
+#ifdef FC_OS_WIN32
+            QString utf8Name = QString::fromUtf8(filename);
+            auto parentPath = fs::absolute(fs::path(utf8Name.toStdWString())).parent_path();
+#else
+            auto parentPath = fs::absolute(fs::path(filename)).parent_path();
+#endif
+            fs::create_directories(parentPath);
+
+            return std::string(filename);
+        }
+    };
+
+    //realpath is canonical filename i.e. without symlink
+    std::string nativePath = canonical_path(filename);
 
     // make a tmp. file where to save the project data first and then rename to
     // the actual file name. This may be useful if overwriting an existing file
@@ -2636,10 +2658,6 @@ bool Document::saveToFile(const char* filename) const
     Base::FileInfo tmp(fn);
 
 
-    // In case some folders in the path do not exist
-    auto parentPath = realpath.parent_path();
-    fs::create_directories(parentPath);
-
     // open extra scope to close ZipWriter properly
     {
         Base::ofstream file(tmp, std::ios::out | std::ios::binary);