From c7e7014b148d9a5c667a3bb3c04b95a7c8161a38 Mon Sep 17 00:00:00 2001
From: dickelbeck <Unknown>
Date: Thu, 14 Feb 2008 15:34:40 +0000
Subject: [PATCH] module flip reverting on exception

---
 pcbnew/specctra.h          | 16 ++++++++++++--
 pcbnew/specctra_export.cpp | 44 +++++++++++++++++++++++++++++---------
 2 files changed, 48 insertions(+), 12 deletions(-)

diff --git a/pcbnew/specctra.h b/pcbnew/specctra.h
index 8a0bef086b..81eba79858 100644
--- a/pcbnew/specctra.h
+++ b/pcbnew/specctra.h
@@ -3578,6 +3578,8 @@ class SPECCTRA_DB : public OUTPUTFORMATTER
 
     std::string     quote_char;
 
+    bool            modulesAreFlipped;
+
     STRINGFORMATTER sf;
 
     STRINGS         layerIds;       ///< indexed by PCB layer number
@@ -3822,6 +3824,11 @@ class SPECCTRA_DB : public OUTPUTFORMATTER
         nets.clear();
     }
 
+    /**
+     * Function flipMODULEs
+     * flips the modules which are on the back side of the board to the front.
+     */
+    void flipMODULEs( BOARD* aBoard );
 
     //-----<FromSESSION>-----------------------------------------------------
 
@@ -3850,6 +3857,7 @@ public:
         session = 0;
         fp    = 0;
         quote_char += '"';
+        modulesAreFlipped = false;
     }
 
     virtual ~SPECCTRA_DB()
@@ -3957,7 +3965,6 @@ public:
      */
     void FromBOARD( BOARD* aBoard ) throw( IOError );
 
-
     /**
      * Function FromSESSION
      * adds the entire SESSION info to a BOARD but does not write it out.  The
@@ -3968,7 +3975,6 @@ public:
      */
     void FromSESSION( BOARD* aBoard ) throw( IOError );
 
-
     /**
      * Function ExportSESSION
      * writes the internal SESSION instance out as a SPECTRA DSN format file.
@@ -3976,6 +3982,12 @@ public:
      * @param aFilename The file to save to.
      */
     void ExportSESSION( wxString aFilename );
+
+    /**
+     * Function RevertMODULEs
+     * flips the modules which were on the back side of the board back to the back.
+     */
+    void RevertMODULEs( BOARD* aBoard );
 };
 
 
diff --git a/pcbnew/specctra_export.cpp b/pcbnew/specctra_export.cpp
index 330c503ba9..ffc101d0ce 100644
--- a/pcbnew/specctra_export.cpp
+++ b/pcbnew/specctra_export.cpp
@@ -97,6 +97,11 @@ void WinEDA_PcbFrame::ExportToSpecctra( wxCommandEvent& event )
 
     setlocale( LC_NUMERIC, "" );      // revert to the current locale
 
+    // this is called in FromBOARD() too, but if it throws an exception, that call
+    // does not happen, so call it again just in case here.
+    db.RevertMODULEs( m_Pcb );
+
+
     // The two calls below to BOARD::Change_Side_Module(), both set the
     // modified flag, yet their actions cancel each other out, so it should
     // be ok to clear the modify flag.
@@ -727,15 +732,7 @@ void SPECCTRA_DB::FromBOARD( BOARD* aBoard ) throw( IOError )
     //  DSN Images (=Kicad MODULES and pads) must be presented from the
     //  top view.  So we temporarily flip any modules which are on the back
     //  side of the board to the front, and record this in the MODULE's flag field.
-    for( MODULE* module = aBoard->m_Modules;  module;  module = module->Next() )
-    {
-        module->flag = 0;
-        if( module->GetLayer() == COPPER_LAYER_N )
-        {
-            aBoard->Change_Side_Module( module, NULL );
-            module->flag = 1;
-        }
-    }
+    flipMODULEs( aBoard );
 
     //-----<layer_descriptor>-----------------------------------------------
     {
@@ -1220,7 +1217,32 @@ void SPECCTRA_DB::FromBOARD( BOARD* aBoard ) throw( IOError )
     }
 
 
-    //-----<restore MODULEs>------------------------------------------------
+    //-----<flip modules back>----------------------------------------------
+
+    RevertMODULEs( aBoard );
+}
+
+
+void SPECCTRA_DB::flipMODULEs( BOARD* aBoard )
+{
+    for( MODULE* module = aBoard->m_Modules;  module;  module = module->Next() )
+    {
+        module->flag = 0;
+        if( module->GetLayer() == COPPER_LAYER_N )
+        {
+            aBoard->Change_Side_Module( module, NULL );
+            module->flag = 1;
+        }
+    }
+
+    modulesAreFlipped = true;
+}
+
+
+void SPECCTRA_DB::RevertMODULEs( BOARD* aBoard )
+{
+    if( !modulesAreFlipped )
+        return;
 
     //  DSN Images (=Kicad MODULES and pads) must be presented from the
     //  top view.  Restore those that were flipped.
@@ -1232,6 +1254,8 @@ void SPECCTRA_DB::FromBOARD( BOARD* aBoard ) throw( IOError )
             module->flag = 0;
         }
     }
+
+    modulesAreFlipped = false;
 }