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#!/usr/bin/env bash
# lirefetch-install: (un)install librefetch to /etc/makepkg.conf
#
# Copyright (C) 2013-2015, 2017 Luke Shumaker <lukeshu@sbcglobal.net>
#
# License: GNU GPLv3+
#
# This file is part of Parabola.
#
# Parabola 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 3 of the License, or
# (at your option) any later version.
#
# Parabola 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 Parabola. If not, see <http://www.gnu.org/licenses/>.
set -ueE
. "$(librelib messages)"
# This line should be installed
new_code='. @pkgconfdir@/librefetch-makepkg.conf # This line was added by librefetch-install'
# These lines were installed by previous versions of this script
old_code=(
'# The following line is added by the libretools post_install script'
'[[ ! -x /usr/bin/librefetch ]] || DLAGENTS+=("libre::/usr/bin/librefetch -p \"\$BUILDFILE\" %u %o")'
'[[ ! -x /usr/bin/librefetch ]] || DLAGENTS+=({https,libre}"::/usr/bin/librefetch -p \"\$BUILDFILE\" -- %u %o")'
'DLAGENTS+=({https,libre}"::/usr/bin/librefetch -p $(printf "%q" "$BUILDFILE") -- %u %o")'
'DLAGENTS+=({https,libre}'\''::/usr/bin/librefetch -p "$BUILDFILE" -- %u %o'\'')'
)
# has_line $file $line
has_line() {
local file=$1
local line=$2
grep -Fxq -- "$line" "$file"
}
# del_line $file $line
del_line() {
local file=$1
local line=$2
local lineno=($(grep -Fxn -- "$line" "$file" | cut -d: -f1))
if [[ "${#lineno[@]}" -gt 0 ]]; then
sed -i "$(printf '%dd;' "${lineno[@]}")" "$file"
fi
}
# post_install $file
post_install() {
local file=$1
if grep -q 'librefetch' "$file"; then
print ":: %s: librefetch is already in %q" "${0##*/}" "$(realpath -s "$file")"
local line
for line in "${old_code[@]}"; do
if has_line "$file" "$line"; then
print ":: %s: ... but it's an old version" "${0##*/}"
pre_remove "$file"
post_install "$file"
return
fi
done
else
print ":: %s: adding librefetch to %q" "${0##*/}" "$(realpath -s "$file")"
printf '%s\n' "$new_code" >> "$file"
fi
}
# pre_remove $file
pre_remove() {
local file=$1
print ":: %s: removing librefetch from %q" "${0##*/}" "$(realpath -s "$file")"
# Check for the old stuff
sed -ri 's/^#(.*) # commented out by the libretools post_install script/\1/' "$file"
local line
for line in "${old_code[@]}"; do
del_line "$file" "$line"
done
# Check for the current stuff
del_line "$file" "$new_code"
}
usage() {
print "Usage: %s [install|remove] MAKEPKG_CONF_FILE" "${0##*/}"
print "Adds or removes librefetch to/from makepkg.conf:DLAGENTS"
}
main() {
if [[ $# != 2 ]]; then
usage >&2
return 1
fi
local file=$2
if [[ ! -f "$file" ]]; then
error "%s: does not exist: %q" "${0##*/}" "$(realpath -s "$file")"
fi
if [[ ! -w "$file" ]]; then
error "%s: cannot write to file: %q" "${0##*/}" "$(realpath -s "$file")"
fi
case "$1" in
install) post_install "$file";;
remove) pre_remove "$file";;
*) usage >&2; return 1;;
esac
}
main "$@"
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