From a9ddd42c2844aebd19263b57411d6fe4c831edeb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Mayer?= <jmayer@loplof.de>
Date: Mon, 24 Sep 2012 05:59:56 +0000
Subject: make-dissector-reg 	Only update outfile if it differs from newly
 created outfile make-dissector-reg.py 	Add a comment that we should do the
 same here (probably a small 	task for python knowledeable people).

svn path=/trunk/; revision=45083
---
 tools/make-dissector-reg    | 5 ++++-
 tools/make-dissector-reg.py | 1 +
 2 files changed, 5 insertions(+), 1 deletion(-)

(limited to 'tools')

diff --git a/tools/make-dissector-reg b/tools/make-dissector-reg
index de486de3e2..62bee69432 100755
--- a/tools/make-dissector-reg
+++ b/tools/make-dissector-reg
@@ -181,4 +181,7 @@ EOF
 	echo "  return $proto_regs + $handoff_regs;" >>${outfile}-tmp
 	echo '}' >>${outfile}-tmp
 fi
-mv ${outfile}-tmp ${outfile}
+
+# Only overwrite outfile if it differs from newly generated file
+diff ${outfile}-tmp ${outfile} >/dev/null || mv ${outfile}-tmp ${outfile}
+
diff --git a/tools/make-dissector-reg.py b/tools/make-dissector-reg.py
index 531a63ddbe..b20e052f5d 100755
--- a/tools/make-dissector-reg.py
+++ b/tools/make-dissector-reg.py
@@ -302,4 +302,5 @@ except OSError:
 	pass
 
 # Move from tmp file to final file
+# FIXME: only overwrite final_filename if it differes from tmp_filename
 os.rename(tmp_filename, final_filename)
-- 
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