ord: Redirect writeDb file opening exception to ORD.

Also add open method to strean handler so it can be instanciated outside the try
block where file opening is done.

Signed-off-by: Christian Costa <[email protected]>

src/OpenRoad.cc

@@ -507,8 +507,12 @@ void OpenRoad::writeDb(std::ostream& stream)
 
 void OpenRoad::writeDb(const char* filename)
 {
-  utl::StreamHandler stream_handler(filename, true);
-
+  utl::StreamHandler stream_handler;
+  try {
+    stream_handler.open(filename, true);
+  } catch (const std::ios_base::failure& f) {
+    logger_->error(ORD, 56, "{}", f.what());
+  }
   db_->write(stream_handler.getStream());
 }
 

src/utl/include/utl/ScopedTemporaryFile.h

@@ -70,10 +70,13 @@ class ScopedTemporaryFile
 class StreamHandler
 {
  public:
+  StreamHandler() = default;
   // Set binary to true to open in binary mode
   StreamHandler(const char* filename, bool binary = false);
   ~StreamHandler();
   std::ofstream& getStream();
+  // Set binary to true to open in binary mode
+  void open(const char* filename, bool binary = false);
 
  private:
   std::string filename_;

src/utl/src/ScopedTemporaryFile.cpp

@@ -50,9 +50,25 @@ ScopedTemporaryFile::~ScopedTemporaryFile()
 }
 
 StreamHandler::StreamHandler(const char* filename, bool binary)
-    : filename_(filename)
 {
-  tmp_filename_ = generate_unused_filename(filename_);
+  open(filename, binary);
+}
+
+StreamHandler::~StreamHandler()
+{
+  if (!filename_.empty()) {
+    if (os_.is_open()) {
+      // Any pending output sequence is written to the file.
+      os_.close();
+    }
+    // If filename_ exists it will be overwritten
+    fs::rename(tmp_filename_, filename_);
+  }
+}
+
+void StreamHandler::open(const char* filename, bool binary)
+{
+  tmp_filename_ = generate_unused_filename(filename);
 
   os_.exceptions(std::ofstream::failbit | std::ofstream::badbit);
   std::ios_base::openmode mode = std::ios_base::out | std::ios::trunc;
@@ -66,16 +82,7 @@ StreamHandler::StreamHandler(const char* filename, bool binary)
     std::throw_with_nested(std::ios_base::failure(error + " (failed to open '"
                                                   + tmp_filename_ + "')"));
   }
-}
-
-StreamHandler::~StreamHandler()
-{
-  if (os_.is_open()) {
-    // Any pending output sequence is written to the file.
-    os_.close();
-  }
-  // If filename_ exists it will be overwritten
-  fs::rename(tmp_filename_, filename_);
+  filename_ = filename;
 }
 
 std::ofstream& StreamHandler::getStream()