to fix all head/tail syntax

1 files changed, 46 insertions, 0 deletions

diff --git a/eclass/fixheadtails.eclass b/eclass/fixheadtails.eclass
new file mode 100644
index 000000000000..d9518e45d0d5
--- /dev/null
+++ b/eclass/fixheadtails.eclass
@@ -0,0 +1,46 @@
+# Copyright 1999-2003 Gentoo Technologies, Inc.
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/eclass/fixheadtails.eclass,v 1.1 2003/09/17 21:15:18 johnm Exp $
+#
+# Author John Mylchreest <johnm@gentoo.org>
+
+ECLASS=fixheadtails
+INHERITED="$INHERITED $ECLASS"
+
+# ht_fix_all
+# This fixes all files within the current directory.
+# Do be used in src_unpack ; cd ${S}; ht_fix_all
+
+# ht_fix_file <param> [<param>] [<param>]..
+# This fixes the files passed by PARAM
+# to be used for specific files. ie: ht_fix_file "${FILESDIR}/mypatch.patch"
+
+ht_fix_all() {
+	local MATCHES
+
+	einfo "Replacing obsolete head/tail with posix compliant ones"
+	for MATCHES in $(grep -i -R -e "head -[ 0-9]" -e "tail [+-][ 0-9]" * | cut -f1 -d: | sort -u) ; do
+		cp -f ${MATCHES} ${MATCHES}.orig
+        	sed -e 's/head -\(.*\)/head -n \1/' -e 's/tail \([-+]\)\(.*\)/tail -n \1\2/' \
+			< ${MATCHES}.orig \
+        		> ${MATCHES}
+		rm ${MATCHES}.orig
+	done
+}
+
+ht_fix_file() {
+	local i
+
+	einfo "Replacing obsolete head/tail with posix compliant ones"
+	for i in "${@}"
+	do
+		if [ -n "$(grep -i -e "head -[ 0-9]" -e "tail [+-][ 0-9]" ${i})" ] ; then
+			cp -f ${i} ${i}.orig
+			sed -e 's/head -\(.*\)/head -n \1/' -e 's/tail \([-+]\)\(.*\)/tail -n \1\2/' \
+				< ${i}.orig \
+				> ${i}
+			rm ${i}.orig
+		fi
+	done
+eend
+}