#!/bin/bash # # updpkgsums - update source checksums in-place in PKGBUILDs # # Copyright (C) 2012-2013 Dave Reisner <dreisner@archlinux.org> # # 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 this program. If not, see <http://www.gnu.org/licenses/>. shopt -s extglob declare -r myname='updpkgsums' declare -r myver='@PACKAGE_VERSION@' usage() { printf "%s (pacman) v%s\n" "${myname}" "${myver}" echo printf "%s will perform an in place update of the checksums in the\n" "${myname}" echo "path specified by [build file], defaulting to PKGBUILD in the current" echo "working directory." echo printf "Usage: %s [build file]\n" "${myname}" echo echo " -h, --help display this help message and exit" echo " -V, --version display version information and exit" } version() { printf "%s %s\n" "$myname" "$myver" echo 'Copyright (C) 2012-2013 Dave Reisner <dreisner@archlinux.org>' } case $1 in -h|--help) usage; exit ;; -V|--version) version; exit ;; esac buildfile=${1:-PKGBUILD} if [[ ! -f $buildfile ]]; then printf "==> ERROR: %s not found or is not a file\n" "$buildfile" exit 1 fi # Resolve any symlinks to avoid replacing the symlink with a file. But, we # have to do this portably -- readlink's flags are inconsistent across OSes. while [[ -L $buildfile ]]; do buildfile=$(readlink "$buildfile") if [[ $buildfile = */* ]]; then cd "${buildfile%/*}" buildfile=${buildfile##*/} fi done # cd into the directory with the build file. This avoids creating random src/ # directories scattered about the filesystem, and avoids cases where we might # not be able to write in the $PWD. if [[ $buildfile = */* ]]; then cd "${buildfile%/*}" buildfile=${buildfile##*/} fi # Check $PWD/ for permission to unlink the $buildfile and write a new one if [[ ! -w . ]]; then printf "==> ERROR: No write permission in '%s'\n" "$PWD" exit 1 fi { # Generate the new sums and try to unlink the file before writing stdin back # into it. This final precaution shouldn't fail based on the previous checks, # but it's better to be extra careful before unlinking files. export BUILDDIR=$(mktemp -d --tmpdir updpkgsums.XXXXXX) trap "rm -rf '$BUILDDIR'" EXIT newsums=$(makepkg -g -p "$buildfile") && rm -f "$buildfile" && exec awk -v newsums="$newsums" ' /^[[:blank:]]*(md|sha)[[:digit:]]+sums=/,/\)[[:blank:]]*(#.*)?$/ { if (!w) { print newsums w++ } next } 1 END { if (!w) print newsums } ' > "$buildfile" } < "$buildfile" # vim: set noet: