From 9389987264218639c0ceaff09779061fe551ad22 Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bvanassche@acm.org>
Date: Wed, 28 Oct 2009 10:43:22 +0000
Subject: [PATCH] Added to repository.

git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1286 d57e44dd-8a1f-0410-8b47-8ef2f437770f
---
 scripts/list-conditional-defines | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100755 scripts/list-conditional-defines

diff --git a/scripts/list-conditional-defines b/scripts/list-conditional-defines
new file mode 100755
index 000000000..87def60fd
--- /dev/null
+++ b/scripts/list-conditional-defines
@@ -0,0 +1,27 @@
+#!/bin/gawk -f
+
+# awk script that reads a patch from stdin and prints all #define statements
+# that match the following patttern:
+# +#ifndef <symbol>
+# +#define <symbol> <text>
+# +#endif
+
+BEGIN {
+  previous_is_ifndef = 0
+  symbol = ""
+}
+
+{
+  is_ifndef = match($0, "^+#ifndef (.*)$", a)
+  if (is_ifndef)
+    symbol = a[1]
+  is_define = previous_is_ifndef && match($0, "^+#define " + symbol)
+  if (is_define)
+    define = $0
+  is_endif = match($0, "^+#endif$")
+  if (before_previous_is_ifndef && previous_is_define && is_endif)
+    print define
+  before_previous_is_ifndef = previous_is_ifndef
+  previous_is_ifndef = is_ifndef
+  previous_is_define = is_define
+}