From 87599e519f4484344178df54e787d0872deb5869 Mon Sep 17 00:00:00 2001
From: cignoni <paolo.cignoni@isti.cnr.it>
Date: Thu, 18 Feb 2010 23:33:56 +0000
Subject: [PATCH] added a minimal support for failing and reporting errors

---
 wrap/io_trimesh/export_vmi.h | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/wrap/io_trimesh/export_vmi.h b/wrap/io_trimesh/export_vmi.h
index 4ca070ce..d31b2f9f 100644
--- a/wrap/io_trimesh/export_vmi.h
+++ b/wrap/io_trimesh/export_vmi.h
@@ -231,11 +231,12 @@ namespace io {
 
 
 	public:
-		static void Save(const SaveMeshType &m,const char * filename){
+        static int Save(const SaveMeshType &m,const char * filename){
 			unsigned int i;
 			unsigned int vertSize,faceSize;
 			F() = fopen(filename,"wb");
-			std::vector<std::string> nameF,nameV;
+            if(F()==NULL)	return 1; // 1 is the error code for cant'open, see the ErrorMsg function
+            std::vector<std::string> nameF,nameV;
 			SaveMeshType::FaceType::Name(nameF);
 			SaveMeshType::VertexType::Name(nameV);
 			vertSize = m.vert.size();
@@ -375,8 +376,21 @@ namespace io {
 
 			//	fflush(F());
 			fclose(F());
+            return 0;
 		}
+        static const char *ErrorMsg(int error)
+        {
+          static std::vector<std::string> off_error_msg;
+          if(off_error_msg.empty())
+          {
+            off_error_msg.resize(2 );
+            off_error_msg[0]="No errors";
+              off_error_msg[1]="Can't open file";
+            }
 
+          if(error>1 || error<0) return "Unknown error";
+          else return off_error_msg[error].c_str();
+        }
 	}; // end class
 
 } // end Namespace tri