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Message-ID: <1250031061-16327-1-git-send-email-lrodriguez@atheros.com>
Date:	Tue, 11 Aug 2009 15:51:01 -0700
From:	"Luis R. Rodriguez" <lrodriguez@...eros.com>
To:	<akpm@...ux-foundation.org>
CC:	<linux-kernel@...r.kernel.org>, <devel@...uxdriverproject.org>,
	<joe@...ches.com>, "Luis R. Rodriguez" <lrodriguez@...eros.com>
Subject: [PATCH] scripts: add typdef removal tool

If you are porting drivers and need to remove tydpefs you can use
this to help you port the driver quicker.

Cc: Joe Perches <joe@...ches.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@...eros.com>
---
 scripts/remove-typedefs |   65 +++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 65 insertions(+), 0 deletions(-)
 create mode 100755 scripts/remove-typedefs

diff --git a/scripts/remove-typedefs b/scripts/remove-typedefs
new file mode 100755
index 0000000..ae6952c
--- /dev/null
+++ b/scripts/remove-typedefs
@@ -0,0 +1,65 @@
+#!/bin/bash
+#
+# Copyright 2009 Joe Perches <joe@...ches.com>
+# Copyright 2009 Luis R. Rodriguez <mcgrof@...il.com>
+#
+# Lets you remove typdefs from C/header files.
+#
+# We do simple sed substituation for logical places where you would use the typdef,
+# and also replace the typdef declaration to a simple struct declaration.
+
+function usage()
+{
+	echo "Usage $0 <typdef-name> <struct-name> <paths>"
+	exit 1
+}
+
+function remove_typedef()
+{
+	if [ ! -f $1 ]; then
+		return;
+	fi
+
+	# This replaces the typdef declaration for a simple struct declaration - style 1
+	perl -i -e "local $/; while(<>) { s/\btypedef\s+struct\s+_$from\s*\{([\d\D]+?)\}\s*struct\s+$to\b[^;]*;/struct $to \{\1\};/g; print; }" $1
+
+	# This replaces the typdef declaration for a simple struct declaration - style 2
+	perl -i -e "local $/; while(<>) { s/\btypedef\s+struct\s+$to\s*\{([\d\D]+?)\}\s*$from\b[^;]*;/struct $to \{\1\};/g; print; }" $1
+
+	# This replaces the typdef usages with simple structs
+	sed -r -i -e "s/\b$from\b/struct $to/g" $1
+	sed -r -i -e "s/\bP$from\b/struct $to \*/g" $1
+	sed -r -i -e "s/struct $to\s*\*\s*\b/struct $to \*/g" $1
+	sed -r -i -e "s/\(struct $to\s*\*\)\s*/\(struct $to \*\)/g" $1
+}
+
+if [[ $# -lt 3 ]]; then
+	usage
+fi
+
+from=$1
+to=$2
+shift
+
+echo "Converting typedef $from to struct $to"
+
+while shift; do
+	REM_PATH=$1
+
+	if [ -z $REM_PATH ]; then
+		continue;
+	fi
+
+	if [ ! -d $REM_PATH ]; then
+		echo "No directory $REM_PATH";
+		continue;
+	fi
+
+	for i in $(find $REM_PATH -type f -name *.c); do
+		remove_typedef $i
+	done
+
+	for i in $(find $REM_PATH -type f -name *.h); do
+		remove_typedef $i
+	done
+done
-- 
1.6.3.3

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