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https://github.com/moparisthebest/pacman
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ca5a2771ae
This could have been easy with something like chown's --reference flag, but this is GNU specific. Instead, just truncate and rewrite the file. Our exit trap cleans up after us. Fixes: https://bugs.archlinux.org/task/43272 Signed-off-by: Allan McRae <allan@archlinux.org>
107 lines
3.1 KiB
Bash
107 lines
3.1 KiB
Bash
#!/bin/bash
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#
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# updpkgsums - update source checksums in-place in PKGBUILDs
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#
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# Copyright (C) 2012-2013 Dave Reisner <dreisner@archlinux.org>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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shopt -s extglob
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declare -r myname='updpkgsums'
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declare -r myver='@PACKAGE_VERSION@'
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usage() {
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printf "%s (pacman) v%s\n" "${myname}" "${myver}"
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echo
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printf "%s will perform an in place update of the checksums in the\n" "${myname}"
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echo "path specified by [build file], defaulting to PKGBUILD in the current"
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echo "working directory."
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echo
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printf "Usage: %s [build file]\n" "${myname}"
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echo
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echo " -h, --help display this help message and exit"
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echo " -V, --version display version information and exit"
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}
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version() {
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printf "%s %s\n" "$myname" "$myver"
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echo 'Copyright (C) 2012-2013 Dave Reisner <dreisner@archlinux.org>'
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}
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die() {
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printf "==> ERROR: $1\n" "${@:2}" >&2
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exit 1
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}
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case $1 in
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-h|--help) usage; exit ;;
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-V|--version) version; exit ;;
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esac
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buildfile=${1:-PKGBUILD}
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if [[ ! -f $buildfile ]]; then
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die "%s not found or is not a file" "$buildfile"
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fi
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# Resolve any symlinks to avoid replacing the symlink with a file. But, we
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# have to do this portably -- readlink's flags are inconsistent across OSes.
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while [[ -L $buildfile ]]; do
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buildfile=$(readlink "$buildfile")
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if [[ $buildfile = */* ]]; then
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cd "${buildfile%/*}"
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buildfile=${buildfile##*/}
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fi
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done
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# cd into the directory with the build file. This avoids creating random src/
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# directories scattered about the filesystem, and avoids cases where we might
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# not be able to write in the $PWD.
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if [[ $buildfile = */* ]]; then
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cd "${buildfile%/*}"
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buildfile=${buildfile##*/}
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fi
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# Check $PWD/ for permission to unlink the $buildfile and write a new one
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if [[ ! -w . ]]; then
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die "No write permission in '%s'" "$PWD"
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fi
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# Generate the new sums
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export BUILDDIR=$(mktemp -d --tmpdir updpkgsums.XXXXXX)
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newbuildfile=$(mktemp --tmpdir updpkgsums.XXXXXX)
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trap "rm -rf '$BUILDDIR' '$newbuildfile'" EXIT
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newsums=$(makepkg -g -p "$buildfile") || die 'Failed to generate new checksums'
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awk -v newsums="$newsums" '
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/^[[:blank:]]*(md|sha)[[:digit:]]+sums(_[^=]+)?=/,/\)[[:blank:]]*(#.*)?$/ {
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if (!w) {
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print newsums
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w++
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}
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next
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}
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1
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END { if (!w) print newsums }
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' "$buildfile" > "$newbuildfile" || die 'Failed to write new PKGBUILD'
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# Rewrite the original buildfile. Use cat instead of mv/cp to preserve
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# permissions implicitly.
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if ! cat -- "$newbuildfile" >"$buildfile"; then
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die "Failed to update %s. The file has not been modified." "$buildfile"
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fi
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# vim: set noet:
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