# Copyright 1999-2008 Gentoo Foundation # Distributed under the terms of the GNU General Public License v2 # $Header: /var/cvsroot/gentoo-x86/eclass/fixheadtails.eclass,v 1.11 2008/02/19 05:27:25 vapier Exp $ # # Original author John Mylchreest <johnm@gentoo.org> # @ECLASS: fixheadtails.eclass # @MAINTAINER: # base-system@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 !" }