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45 lines
1.2 KiB
45 lines
1.2 KiB
# Copyright 1999-2014 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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# $Header: /var/cvsroot/gentoo-x86/eclass/fixheadtails.eclass,v 1.13 2014/07/11 08:21:58 ulm Exp $
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# @ECLASS: fixheadtails.eclass
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# @MAINTAINER:
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# base-system@gentoo.org
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# @AUTHOR:
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# Original author John Mylchreest <johnm@gentoo.org>
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# @BLURB: functions to replace obsolete head/tail with POSIX compliant ones
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DEPEND=">=sys-apps/sed-4"
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_do_sed_fix() {
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einfo " - fixed $1"
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sed -i \
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-e 's/head \+-\([0-9]\)/head -n \1/g' \
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-e 's/tail \+\([-+][0-9]\+\)c/tail -c \1/g' \
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-e 's/tail \+\([-+][0-9]\)/tail -n \1/g' ${1} || \
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die "sed ${1} failed"
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}
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# @FUNCTION: ht_fix_file
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# @USAGE: <files>
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# @DESCRIPTION:
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# Fix all the specified files.
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ht_fix_file() {
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local i
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einfo "Replacing obsolete head/tail with POSIX compliant ones"
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for i in "$@" ; do
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_do_sed_fix "$i"
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done
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}
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# @FUNCTION: ht_fix_all
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# @DESCRIPTION:
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# Find and fix all files in the current directory as needed.
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ht_fix_all() {
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local MATCHES
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MATCHES=$(grep -l -s -i -R -e "head -[ 0-9]" -e "tail [+-][ 0-9]" * | sort -u)
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[[ -n ${MATCHES} ]] \
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&& ht_fix_file ${MATCHES} \
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|| einfo "No need for ht_fix_all anymore !"
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}
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