lib/aur-repo-filter

   1 #!/bin/bash
   2 # aur-repo-filter - filter packages in the Arch Linux repositories
   3 [[ -v AUR_DEBUG ]] && set -o xtrace
   4 argv0='repo-filter'
   5 PS4='+(${BASH_SOURCE}:${LINENO}): ${FUNCNAME[0]:+${FUNCNAME[0]}(): }'
   6 arch_repo=(core extra testing community{,-testing} multilib{,-testing})
   7
   8 # default options
   9 sync_repo=0
  10
  11 args_csv() {
  12     # shellcheck disable=SC2155
  13     local str=$(printf '%s,' "$@")
  14     printf '%s' "${str%,}"
  15 }
  16
  17 # The command line will hit ARG_MAX on approximately 70k packages;
  18 # spread arguments with xargs (and printf, as a shell built-in).
  19 satisfies() {
  20     #global sift_args
  21     # Support `unbuffer` if redirecting from `/dev/tty` is insufficient (#1051)
  22     if command -v unbuffer >/dev/null; then
  23         unbuffer  xargs -a <(printf -- "--satisfies=%s\n" "$@") pacsift "${sift_args[@]}"
  24     else
  25         </dev/tty xargs -a <(printf -- "--satisfies=%s\n" "$@") pacsift "${sift_args[@]}"
  26     fi
  27 }
  28
  29 provides() {
  30     #global info_args
  31     pacinfo "${info_args[@]}" | awk -F'[:<=>]' '
  32         /Name:/       { pkgname=$2; }
  33         /Repository:/ { repo=$2
  34                         print repo, pkgname, pkgname; }
  35         /Provides:/   { print repo, pkgname, $2; }
  36         /Replaces:/   { print repo, pkgname, $2; }
  37     '
  38 }
  39
  40 usage() {
  41     plain >&2 'usage: %s [-d repo] [-S]' "$argv0"
  42     exit 1
  43 }
  44
  45 opt_short='d:a'
  46 opt_long=('all' 'sync' 'config:' 'database:' 'sysroot:')
  47 opt_hidden=('dump-options' 'repo:')
  48
  49 if opts=$(getopt -o "$opt_short" -l "$(args_csv "${opt_long[@]}" "${opt_hidden[@]}")" -n "$argv0" -- "$@"); then
  50     eval set -- "$opts"
  51 else
  52     usage
  53 fi
  54
  55 unset argv_repo sift_args info_args
  56 while true; do
  57     case "$1" in
  58         -a|--all|--sync)
  59             sync_repo=1 ;;
  60         -d|--database|--repo)
  61             shift; argv_repo+=("$1") ;;
  62         --config)
  63             shift; sift_args+=(--config="$1")
  64             info_args+=(--config="$1") ;;
  65         --sysroot)
  66             shift; sift_args+=(--sysroot="$1")
  67             info_args+=(--sysroot="$1") ;;
  68         --dump-options)
  69             printf -- '--%s\n' "${opt_long[@]}" ${AUR_DEBUG+"${opt_hidden[@]}"}
  70             printf -- '%s' "${opt_short}" | sed 's/.:\?/-&\n/g'
  71             exit ;;
  72         --) shift; break;;
  73     esac
  74     shift
  75 done
  76
  77 if (( sync_repo )); then
  78     sift_args+=(--sync)
  79 elif [[ -v argv_repo ]]; then
  80     sift_args+=(--exact "${argv_repo[@]/#/--repo=}")
  81 else
  82     sift_args+=(--exact "${arch_repo[@]/#/--repo=}")
  83 fi
  84
  85 # check for interactive terminal
  86 if [[ -t 0 ]]; then
  87     cat >&2 <<EOF
  88 Warning: Input is read from the terminal. You either know what you
  89 Warning: are doing, or you forgot to pipe data into $argv0.
  90 Warning: Press CTRL-D to exit.
  91 EOF
  92 fi
  93
  94 # associative array for input package names
  95 declare -A pkgset
  96 strset=()
  97
  98 while IFS= read -r str; do
  99     # store unversioned string as key
 100     name=${str%%[<>=]*}
 101
 102     # store version + operator as value (1 if unavailable)
 103     if (( ${#str} - ${#name} )); then
 104         pkgset[$name]=${str:${#name}}
 105     else
 106         pkgset[$name]=1
 107     fi
 108
 109     # store original versioned string
 110     strset+=("$str")
 111 done
 112
 113 # exit on empty stdin
 114 if ! (( ${#pkgset[@]} )); then
 115     exit 0
 116 fi
 117
 118 # Standard input is taken as "provides[<cmp><version>]", where pacsift
 119 # checks for a package satisfying this condition. Results are printed
 120 # as "repository/package", and piped to pacinfo to relate the names of
 121 # the original provides to its corresponding package(s).
 122 satisfies "${strset[@]}" | provides | while read -r repo package virtual; do
 123     if [[ ${pkgset[$package]} ]]; then
 124         printf '%s\n' "$package"
 125     fi
 126
 127     if [[ $virtual != "$package" ]]; then
 128         version=${pkgset[$virtual]:-1}
 129     else
 130         continue
 131     fi
 132
 133     case $version in
 134         1) printf >&2 'dependency %s satisfied by %s/%s\n' "$virtual" "$repo" "$package"
 135            printf '%s\n' "$virtual" ;;
 136         *) printf >&2 'dependency %s%s satisfied by %s/%s\n' "$virtual" "$version" "$repo" "$package"
 137            printf '%s\n' "$virtual" ;;
 138     esac
 139 done | sort | uniq
 140
 141 # vim: set et sw=4 sts=4 ft=sh: