gentoo-x86/eclass/fixheadtails.eclass

# Copyright 1999-2011 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 $

# @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 !"
}
1	vapier	1.12	# Copyright 1999-2011 Gentoo Foundation
2	johnm	1.1	# Distributed under the terms of the GNU General Public License v2
3	vapier	1.12	# $Header: /var/cvsroot/gentoo-x86/eclass/fixheadtails.eclass,v 1.11 2008/02/19 05:27:25 vapier Exp $
4	vapier	1.11
5			# @ECLASS: fixheadtails.eclass
6			# @MAINTAINER:
7			# base-system@gentoo.org
8	vapier	1.12	# @AUTHOR:
9			# Original author John Mylchreest <johnm@gentoo.org>
10	vapier	1.11	# @BLURB: functions to replace obsolete head/tail with POSIX compliant ones
11	johnm	1.1
12	swegener	1.9	DEPEND=">=sys-apps/sed-4"
13	johnm	1.1
14	vapier	1.11	__do_sed_fix() {
15	vapier	1.6	einfo " - fixed $1"
16	mr_bones_	1.2	sed -i \
17	langthang	1.5	-e 's/head \+-\([0-9]\)/head -n \1/g' \
18			-e 's/tail \+\([-+][0-9]\+\)c/tail -c \1/g' \
19			-e 's/tail \+\([-+][0-9]\)/tail -n \1/g' ${1} \|\| \
20	mr_bones_	1.2	die "sed ${1} failed"
21	johnm	1.1	}
22
23	vapier	1.11	# @FUNCTION: ht_fix_file
24			# @USAGE: <files>
25			# @DESCRIPTION:
26			# Fix all the specified files.
27	johnm	1.1	ht_fix_file() {
28			local i
29	mr_bones_	1.2	einfo "Replacing obsolete head/tail with POSIX compliant ones"
30	vapier	1.11	for i in "$@" ; do
31			__do_sed_fix "$i"
32	johnm	1.1	done
33	mr_bones_	1.2	}
34
35	vapier	1.11	# @FUNCTION: ht_fix_all
36			# @DESCRIPTION:
37			# Find and fix all files in the current directory as needed.
38	mr_bones_	1.2	ht_fix_all() {
39			local MATCHES
40	vapier	1.10	MATCHES=$(grep -l -s -i -R -e "head -[ 0-9]" -e "tail [+-][ 0-9]" * \| sort -u)
41	vapier	1.6	[[ -n ${MATCHES} ]] \
42			&& ht_fix_file ${MATCHES} \
43			\|\| einfo "No need for ht_fix_all anymore !"
44	johnm	1.1	}