From 4f2d7949f03e1c198bc888f2d05f421d35c57e21 Mon Sep 17 00:00:00 2001
From: V3n3RiX <venerix@redcorelinux.org>
Date: Mon, 9 Oct 2017 18:53:29 +0100
Subject: reinit the tree, so we can have metadata

---
 eclass/fixheadtails.eclass | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 eclass/fixheadtails.eclass

(limited to 'eclass/fixheadtails.eclass')

diff --git a/eclass/fixheadtails.eclass b/eclass/fixheadtails.eclass
new file mode 100644
index 000000000000..c19d33924aab
--- /dev/null
+++ b/eclass/fixheadtails.eclass
@@ -0,0 +1,43 @@
+# Copyright 1999-2014 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+# @ECLASS: fixheadtails.eclass
+# @MAINTAINER:
+# base-system@gentoo.org
+# @AUTHOR:
+# Original author John Mylchreest <johnm@gentoo.org>
+# @BLURB: functions to replace obsolete head/tail with POSIX compliant ones
+
+DEPEND=">=sys-apps/sed-4"
+
+_do_sed_fix() {
+	einfo " - fixed $1"
+	sed -i \
+		-e 's/head \+-\([0-9]\)/head -n \1/g' \
+		-e 's/tail \+\([-+][0-9]\+\)c/tail -c \1/g' \
+		-e 's/tail \+\([-+][0-9]\)/tail -n \1/g' ${1} || \
+			die "sed ${1} failed"
+}
+
+# @FUNCTION: ht_fix_file
+# @USAGE: <files>
+# @DESCRIPTION:
+# Fix all the specified files.
+ht_fix_file() {
+	local i
+	einfo "Replacing obsolete head/tail with POSIX compliant ones"
+	for i in "$@" ; do
+		_do_sed_fix "$i"
+	done
+}
+
+# @FUNCTION: ht_fix_all
+# @DESCRIPTION:
+# Find and fix all files in the current directory as needed.
+ht_fix_all() {
+	local MATCHES
+	MATCHES=$(grep -l -s -i -R -e "head -[ 0-9]" -e "tail [+-][ 0-9]" * | sort -u)
+	[[ -n ${MATCHES} ]] \
+		&& ht_fix_file ${MATCHES} \
+		|| einfo "No need for ht_fix_all anymore !"
+}
-- 
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