--- a/src/bridge/bridge_constructor/bridge_contructor.py	Mon Jan 24 21:47:16 2011 +0100
+++ b/src/bridge/bridge_constructor/bridge_contructor.py	Mon Jan 24 21:48:09 2011 +0100
@@ -23,6 +23,7 @@
 #consts
 NAME = u"bridge_constructor"
 VERSION="0.1.0"
+DEST_DIR="generated"
 ABOUT = NAME+u""" v%s (c) Jérôme Poisson (aka Goffi) 2011
 
 ---
@@ -157,6 +158,32 @@
         """create the constructor in SàT core side (backend)"""
         raise NotImplementedError
 
+    def generateFrontendSide(self):
+        """create the constructor in SàT frontend side"""
+        raise NotImplementedError
+
+    def finalWrite(self, filename, file_buf):
+        """Write the final generated file in DEST_DIR/filename
+        @param filename: name of the file to generate
+        @param file_buf: list of lines (stings) of the file"""
+        if os.path.exists(DEST_DIR) and not os.path.isdir(DEST_DIR):
+            print ("The destination dir [%s] can't be created: a file with this name already exists !")
+            sys.exit(1)
+        try:
+            if not os.path.exists(DEST_DIR):
+                os.mkdir(DEST_DIR)
+            full_path=os.path.join(DEST_DIR,filename)
+            if os.path.exists(full_path) and not self.options.force:
+                print ("The destination file [%s] already exists ! Use --force to overwrite it" % full_path) 
+            try:
+                with open(full_path,'w') as dest_file:
+                    dest_file.write('\n'.join(file_buf))
+            except IOError:
+                print ("Can't open destination file [%s]" % full_path)
+        except OSError:
+            print("It's not possible to generate the file, check your permissions")
+            exit(1)
+
 class DbusConstructor(Constructor):
 
     def __init__(self, bridge_template, options):
@@ -226,13 +253,7 @@
             sys.exit(1) 
 
         #now we write to final file
-        if os.path.exists(self.core_dest) and not self.options.force:
-            print ("The destination file [%s] already exists ! Use --force to overwrite it" % self.core_dest) 
-        try:
-            with open(self.core_dest,'w') as dest_file:
-                dest_file.write('\n'.join(core_bridge))
-        except IOError:
-            print ("Can't open destination file [%s]" % self.core_dest)
+        self.finalWrite(self.core_dest, core_bridge)
 
     def generateFrontendSide(self):
         methods_part = []
@@ -274,13 +295,7 @@
             sys.exit(1) 
 
         #now we write to final file
-        if os.path.exists(self.frontend_dest) and not self.options.force:
-            print ("The destination file [%s] already exists ! Use --force to overwrite it" % self.frontend_dest) 
-        try:
-            with open(self.frontend_dest,'w') as dest_file:
-                dest_file.write('\n'.join(frontend_bridge))
-        except IOError:
-            print ("Can't open destination file [%s]" % self.frontend_dest)
+        self.finalWrite(self.frontend_dest, frontend_bridge)
 
 
 class ConstructorError(Exception):