1 files changed, 52 insertions, 0 deletions
diff --git a/tools/release/utils.py b/tools/release/utils.py
new file mode 100644
index 0000000000..c72ab2d91f
--- /dev/null
+++ b/tools/release/utils.py
@@ -0,0 +1,52 @@
+import string
+
+import os
+
+class failure_exception:
+    def __init__( self, rc ):
+        self.rc_ = rc
+
+    def __str__( self ):
+        return "rc: %d" % self.rc_
+
+def system( commands ):
+    if os.path.exists( "tmp.cmd" ):
+        os.chmod( "tmp.cmd", 0777 )
+        os.unlink( "tmp.cmd" )
+
+    f = open( "tmp.cmd", "w" )
+    f.write( string.join( commands, "\n" ) )
+    f.close()
+    rc = os.system( "tmp.cmd" )
+    os.chmod( "tmp.cmd", 0777 )
+    os.unlink( "tmp.cmd" )
+    return rc
+
+def checked_system( commands, valid_return_codes = [ 0 ] ):
+    rc = system( commands ) 
+    if rc not in [ 0 ] + valid_return_codes: raise failure_exception( rc )
+    return rc
+
+class step_controller:
+    def __init__( self, start_step ):
+        self.current_step_ = None;
+        self.skip_to_step_ = start_step
+
+    def start_step( self, step_name, start_message ):
+        self.current_step_ = step_name
+        if self.is_skipping( step_name ):
+            print "[%s] Skipping." % step_name
+            return 0
+        else:
+            self.skip_to_step_ = ""
+            print "[%s] %s" % ( step_name, start_message )
+            return 1
+
+    def finish_step( self, step_name ):
+        print "[%s] Finished" % step_name
+
+    def is_skipping( self, step_name = None ):
+        if step_name is None: step_name = self.current_step_
+        return self.skip_to_step_ != "" and self.skip_to_step_ != step_name
+
+