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# autoepatch - Automatic patch scripting
# Copyright (C) 2006 Gentoo Foundation
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with autoepatch; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# Check for gpatch present and use that if available; if not
# and patch is not GNU patch, warn that autoepatch might not
# work as intended
gpatch() {
if [[ -n ${GNU_PATCH} ]]; then
"${GNU_PATCH}" "$@"
return $?
fi
GNU_PATCH=$(type -p gpatch)
if [[ -z ${GNU_PATCH} ]]; then
if ! type -p patch; then
eerror "Unable to find a patch command to use"
return 1
fi
GNU_PATCH=$(type -p patch)
if ! "${GNU_PATCH}" --version </dev/null | grep -q "Free Software Foundation" &>/dev/null; then
ewarn "The ${GNU_PATCH} binary is not a GNU patch version, autoepatch might misbehave"
fi
fi
gpatch "${@}"
return $?
}
# Alias a working find(1), so that we can make sure the -exec {} + works.
# OpenBSD find(1) is stone age.
find() {
local findcmd="@findcmd@"
# We assume that if no find is specified, then we're using a decent
# version of find(1).
[[ "${findcmd//@/|}" == "|findcmd|" ]] && findcmd="$(type -P find)"
"${findcmd}" "$@"
return $?
}
# Simple wrapper around debianutils mktemp and BSD mktemp,
# based on the emktemp function in eutils.eclass by
# Mike Frysinger (vapier@gentoo.org)
#
# Takes just 1 optional parameter (the directory to create tmpfile in)
emktemp() {
local exe="touch"
if [[ $1 == -d ]]; then
exe="mkdir"
shift
fi
local topdir=$1
if [[ -z ${topdir} ]] ; then
# ${T} is an ebuild variable, respect it
[[ -z ${T} ]] \
&& topdir="/tmp" \
|| topdir=${T}
fi
if [[ -z $(type -p mktemp) ]] ; then
local tmp=/
while [[ -e ${tmp} ]] ; do
tmp=${topdir}/tmp.${RANDOM}.${RANDOM}.${RANDOM}
done
${exe} "${tmp}" || ${exe} -p "${tmp}"
echo "${tmp}"
else
local mktemptype
mktemp -V &>/dev/null && \
mktemptype="debianutils" || \
mktemptype="bsd"
if [[ ${exe} == "touch" ]] ; then
[[ ${mktemptype} == "debianutils" ]] \
&& mktemp -p "${topdir}" \
|| TMPDIR="${topdir}" mktemp -t tmp
else
[[ ${mktemptype} == "debianutils" ]] \
&& mktemp -d "${topdir}" \
|| TMPDIR="${topdir}" mktemp -dt tmp
fi
fi
}
#
# See if we can apply $2 on $1, and if so, do it
#
try_patch() {
local target=$1
local patch=$2
local ret
local patchname="$(basename "$(dirname "${patch}")")-${patch##*/}"
if [[ -d "${target}" ]]; then
pushd "${target}" &>/dev/null
gpatch -g0 -p0 --dry-run <"${patch}" &> "${T}/autoepatch.$$.${patchname}.log" || \
return 1
ebegin " Applying ${patchname} ..."
patch -g0 -p0 --no-backup-if-mismatch "${patch}" &> "${T}/autoepatch.$$.${patchname}.log"
ret=$?
eend ${ret}
popd &>/dev/null
return ${ret}
else
gpatch -g0 --dry-run "${target}" "${patch}" &> "${T}/autoepatch.$$.${patchname}.log" || \
return 1
ebegin " Applying ${patchname} ..."
patch -g0 --no-backup-if-mismatch "${target}" "${patch}" &> "${T}/autoepatch.$$.${patchname}.log"
ret=$?
eend ${ret}
popd &>/dev/null
return ${ret}
fi
# Should never happen
return 1
}
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