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#!/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" "${myname}"
echo "path specified by [build file], defaulting to PKGBUILD in the current"
echo "working directory."
echo
printf "Usage: %s [options] [build file]\n" "${myname}"
echo
echo " -h, --help display this help message and exit"
echo " -V, --version display version information and exit"
echo
echo "These options can be passed to makepkg:"
echo " -m, --nocolor disable colorized output messages"
}
version() {
printf "%s %s\n" "$myname" "$myver"
echo 'Copyright (C) 2012-2013 Dave Reisner <dreisner@archlinux.org>'
}
die() {
printf "==> ERROR: $1\n" "${@:2}" >&2
exit 1
}
MAKEPKG_OPTS=()
buildfile='PKGBUILD'
while (( "$#" )); do
case "$1" in
-h|--help) usage; exit ;;
-m|--nocolor) MAKEPKG_OPTS+=("$1"); shift ;;
-V|--version) version; exit ;;
*) buildfile="$1"; break 2 ;;
esac
done
if [[ ! -f $buildfile ]]; then
die "%s not found or is not a file" "$buildfile"
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 $buildfile and write a new one
if [[ ! -w . ]]; then
die "No write permission in '%s'" "$PWD"
fi
# Generate the new sums
export BUILDDIR=$(mktemp -d "${TMPDIR:-/tmp}/updpkgsums.XXXXXX")
newbuildfile=$(mktemp "${TMPDIR:-/tmp}/updpkgsums.XXXXXX")
trap "rm -rf '$BUILDDIR' '$newbuildfile'" EXIT
newsums=$(makepkg -g -p "$buildfile" "${MAKEPKG_OPTS[@]}") || die 'Failed to generate new checksums'
awk -v newsums="$newsums" '
/^[[:blank:]]*(md|sha)[[:digit:]]+sums(_[^=]+)?=/,/\)[[:blank:]]*(#.*)?$/ {
if (!w) {
print newsums
w++
}
next
}
1
END { if (!w) print newsums }
' "$buildfile" > "$newbuildfile" || die 'Failed to write new PKGBUILD'
# Rewrite the original buildfile. Use cat instead of mv/cp to preserve
# permissions implicitly.
if ! cat -- "$newbuildfile" >"$buildfile"; then
die "Failed to update %s. The file has not been modified." "$buildfile"
fi
# vim: set noet:
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