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-rwxr-xr-xcontrib/paccache.in319
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diff --git a/contrib/paccache.in b/contrib/paccache.in
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-#!/bin/bash
-#
-# pacache - flexible pacman cache cleaning
-#
-# Copyright (C) 2011 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='paccache'
-declare -r myver='@PACKAGE_VERSION@'
-
-declare -a candidates=() cmdopts=() whitelist=() blacklist=()
-declare -i delete=0 dryrun=0 filecount=0 move=0 needsroot=0 totalsaved=0 verbose=0
-declare cachedir=@localstatedir@/cache/pacman/pkg delim=$'\n' keep=3 movedir= scanarch=
-
-msg() {
- local mesg=$1; shift
- printf "==> $mesg\n" "$@"
-} >&2
-
-error() {
- local mesg=$1; shift
- printf "==> ERROR: $mesg\n" "$@"
-} >&2
-
-die() {
- error "$@"
- exit 1
-}
-
-# reads a list of files on stdin and prints out deletion candidates
-pkgfilter() {
- # there's whitelist and blacklist parameters passed to this
- # script after the block of awk.
-
- awk -v keep="$1" -v scanarch="$2" '
- function parse_filename(filename, parts, count, i, pkgname, arch) {
-
- count = split(filename, parts, "-")
-
- i = 1
- pkgname = parts[i++]
- while (i <= count - 3) {
- pkgname = pkgname "-" parts[i++]
- }
-
- arch = substr(parts[count], 1, index(parts[count], ".") - 1)
-
- # filter on whitelist or blacklist
- if (wlen && !whitelist[pkgname]) return
- if (blen && blacklist[pkgname]) return
-
- if ("" == packages[pkgname,arch]) {
- packages[pkgname,arch] = filename
- } else {
- packages[pkgname,arch] = packages[pkgname,arch] SUBSEP filename
- }
- }
-
- BEGIN {
- # create whitelist
- wlen = ARGV[1]; delete ARGV[1]
- for (i = 2; i < 2 + wlen; i++) {
- whitelist[ARGV[i]] = 1
- delete ARGV[i]
- }
-
- # create blacklist
- blen = ARGV[i]; delete ARGV[i]
- while (i++ < ARGC) {
- blacklist[ARGV[i]] = 1
- delete ARGV[i]
- }
-
- # read package filenames
- while (getline < "/dev/stdin") {
- parse_filename($0)
- }
-
- for (pkglist in packages) {
- # idx[1,2] = idx[pkgname,arch]
- split(pkglist, idx, SUBSEP)
-
- # enforce architecture match if specified
- if (!scanarch || scanarch == idx[2]) {
- count = split(packages[idx[1], idx[2]], pkgs, SUBSEP)
- for(i = 1; i <= count - keep; i++) {
- print pkgs[i]
- }
- }
- }
- }' "${@:3}"
-}
-
-size_to_human() {
- awk -v size="$1" '
- BEGIN {
- suffix[1] = "B"
- suffix[2] = "KiB"
- suffix[3] = "MiB"
- suffix[4] = "GiB"
- suffix[5] = "TiB"
- count = 1
-
- while (size > 1024) {
- size /= 1024
- count++
- }
-
- sizestr = sprintf("%.2f", size)
- sub(/\.?0+$/, "", sizestr)
- printf("%s %s", sizestr, suffix[count])
- }'
-}
-
-runcmd() {
- if (( needsroot )); then
- msg "Privilege escalation required"
- if sudo -v &>/dev/null && sudo -l &>/dev/null; then
- sudo "$@"
- else
- printf '%s ' 'root'
- su -c "$(printf '%q ' "$@")"
- fi
- else
- "$@"
- fi
-}
-
-summarize() {
- local -i filecount=$1; shift
- local seenarch= seen= arch= name=
- local -r pkg_re='(.+)-[^-]+-[0-9]+-([^.]+)\.pkg.*'
-
- if (( delete )); then
- printf -v output 'finished: %d packages removed' "$filecount"
- elif (( move )); then
- printf -v output "finished: %d packages moved to \`%s'" "$filecount" "$movedir"
- elif (( dryrun )); then
- if (( verbose )); then
- msg "Candidate packages:"
- while read -r pkg; do
- if (( verbose >= 3 )); then
- [[ $pkg =~ $pkg_re ]] && name=${BASH_REMATCH[1]} arch=${BASH_REMATCH[2]}
- if [[ -z $seen || $seenarch != "$arch" || $seen != "$name" ]]; then
- seen=$name seenarch=$arch
- printf '%s (%s):\n' "$name" "$arch"
- fi
- printf ' %s\n' "$pkg"
- elif (( verbose >= 2 )); then
- printf "$PWD/%s$delim" "$pkg"
- else
- printf "%s$delim" "$pkg"
- fi
- done < <(printf '%s\n' "$@" | pacsort)
- fi
- printf -v output 'finished dry run: %d candidates' "$filecount"
- fi
-
- printf '\n' >&2
- msg "$output (diskspace saved: %s)" "$(size_to_human "$totalsaved")"
-}
-
-usage() {
- cat <<EOF
-usage: $myname <operation> [options] [targets...]
-
-$myname is a flexible pacman cache cleaning utility, which has numerous
-options to help control how much, and what, is deleted from any directory
-containing pacman package tarballs.
-
- Operations:
- -d perform a dry run, only finding candidate packages.
- -m <movedir> move candidate packages to 'movedir'.
- -r remove candidate packages.
-
- Options:
- -a <arch> scan for 'arch' (default: all architectures).
- -c <cachedir> scan 'cachedir' for packages (default: @localstatedir@/cache/pacman/pkg).
- -f apply force to mv(1) and rm(1) operations.
- -h display this help message.
- -i <pkgs> ignore 'pkgs', which is a comma separated. Alternatively,
- specify '-' to read package names from stdin, newline delimited.
- -k <num> keep 'num' of each package in 'cachedir' (default: 3).
- -u target uninstalled packages.
- -v increase verbosity. specify up to 3 times.
- -z use null delimiters for candidate names (only with -v and -vv)
-
-EOF
-}
-
-version() {
- printf "%s %s\n" "$myname" "$myver"
- echo 'Copyright (C) 2011 Dave Reisner <dreisner@archlinux.org>'
-}
-
-if (( ! UID )); then
- error "Do not run this script as root. You will be prompted for privilege escalation."
- exit 42
-fi
-
-# TODO: remove this workaround and use a sane command line parser (like the
-# parse_options library from scripts/) here
-if [[ $1 = -@(h|-help) ]]; then
- usage
- exit 0
-elif [[ $1 = -@(V|-version) ]]; then
- version
- exit 0
-fi
-
-while getopts ':a:c:dfi:k:m:rsuvz' opt; do
- case $opt in
- a) scanarch=$OPTARG ;;
- c) cachedir=$OPTARG ;;
- d) dryrun=1 ;;
- f) cmdopts=(-f) ;;
- i) if [[ $OPTARG = '-' ]]; then
- [[ ! -t 0 ]] && IFS=$'\n' read -r -d '' -a ign
- else
- IFS=',' read -r -a ign <<< "$OPTARG"
- fi
- blacklist+=("${ign[@]}")
- unset i ign ;;
- k) keep=$OPTARG
- if [[ -z $keep || -n ${keep//[0-9]/} ]]; then
- die 'argument to option -k must be a non-negative integer'
- else
- keep=$(( 10#$keep ))
- fi ;;
- m) move=1 movedir=$OPTARG ;;
- r) delete=1 ;;
- u) IFS=$'\n' read -r -d '' -a ign < <(pacman -Qq)
- blacklist+=("${ign[@]}")
- unset ign ;;
- v) (( ++verbose )) ;;
- z) delim='\0' ;;
- :) die "option '--%s' requires an argument" "$OPTARG" ;;
- ?) die "invalid option -- '%s'" "$OPTARG" ;;
- esac
-done
-shift $(( OPTIND - 1 ))
-
-# remaining args are a whitelist
-whitelist=("$@")
-
-# sanity checks
-case $(( dryrun+delete+move )) in
- 0) die "no operation specified (use -h for help)" ;;
- [^1]) die "only one operation may be used at a time" ;;
-esac
-
-[[ -d $cachedir ]] ||
- die "cachedir \`%s' does not exist or is not a directory" "$cachedir"
-
-[[ $movedir && ! -d $movedir ]] &&
- die "move-to directory \`%s' does not exist or is not a directory" "$movedir"
-
-if (( move || delete )); then
- # make it an absolute path since we're about to chdir
- [[ ${movedir:0:1} != '/' ]] && movedir=$PWD/$movedir
- [[ ! -w $cachedir || ( $movedir && ! -w $movedir ) ]] && needsroot=1
-fi
-
-# unlikely that this will fail, but better make sure
-cd "$cachedir" >/dev/null || die "failed to chdir to \`%s'" "$cachedir"
-
-# note that these results are returned in an arbitrary order from awk, but
-# they'll be resorted (in summarize) iff we have a verbosity level set.
-IFS=$'\n' read -r -d '' -a candidates < \
- <(printf '%s\n' *.pkg.tar?(.+([^.])) | pacsort |
- pkgfilter "$keep" "$scanarch" \
- "${#whitelist[*]}" "${whitelist[@]}" \
- "${#blacklist[*]}" "${blacklist[@]}")
-
-if (( ! ${#candidates[*]} )); then
- msg 'no candidate packages found for pruning'
- exit 1
-fi
-
-# grab this prior to signature scavenging
-pkgcount=${#candidates[*]}
-
-# copy the list, merging in any found sigs
-for cand in "${candidates[@]}"; do
- candtemp+=("$cand")
- [[ -f $cand.sig ]] && candtemp+=("$cand.sig")
-done
-candidates=("${candtemp[@]}")
-unset candtemp
-
-# do this before we destroy anything
-totalsaved=$(@SIZECMD@ "${candidates[@]}" | awk '{ sum += $1 } END { print sum }')
-
-# crush. kill. destroy.
-(( verbose )) && cmdopts+=(-v)
-if (( delete )); then
- runcmd rm "${cmdopts[@]}" "${candidates[@]}"
-elif (( move )); then
- runcmd mv "${cmdopts[@]}" "${candidates[@]}" "$movedir"
-fi
-
-summarize "$pkgcount" "${candidates[@]}"
-
-# vim: set ts=2 sw=2 noet:
generated by cgit v1.2.3-24-g4f1b (git 2.32.0) at 2024-10-30 22:55:57 +0100