examples/sync-list

   1 #!/bin/bash
   2 set -e
   3 argv0=sync-list
   4
   5 # Targets are taken from a file or the command-line, to avoid
   6 # redirecting stdin to aur-view or aur-build.
   7 if [[ -s $1 ]]; then
   8     list=$(realpath -- "$1")
   9 else
  10     printf >&2 '%s: %s: file is empty or does not exist\n' "$argv0" "$1"
  11     exit 1
  12 fi
  13
  14 # Create a scratch space. /var/tmp ensures sufficient space for built
  15 # packages (not on tmpfs by default)
  16 var_tmp=$(mktemp -d --tmpdir="${TMPDIR:-/var/tmp/}")
  17 tmp=$(mktemp -d)
  18 trap 'rm -rf "$tmp" "$var_tmp"' EXIT # comment this if inspecting the contents
  19
  20 # 1. Avoid concurrent use
  21 ( flock -n 200 || exit 1
  22   cd "$tmp"
  23
  24   # Retrieve repository location
  25   { IFS=: read -r _ db_name
  26     IFS=: read -r _ db_root
  27     IFS=: read -r _ db_path
  28   } < <(aur repo --status "$@")
  29   wait "$!"
  30
  31   # 2. Retrieve targets and their dependencies from the local repository.
  32   aur repo-parse -p "$db_path" --table | tee db_table | \
  33       cut -f1,2 | grep -Fwf "$list" | tsort >db_deps
  34
  35   # 3. Remove entries that are not in the dependency tree.
  36   cut -f1 db_table | grep -Fxvf db_deps | sort -u >db_removals
  37
  38   files_path=$(realpath "$db_root/$db_name".files)
  39
  40   # Create copy of local repository database
  41   cp -Pv "$db_path" "$db_root/$db_name".db "$var_tmp"
  42   cp -Pv "$files_path" "$db_root/$db_name".files "$var_tmp"
  43
  44   # 4. Remove entries that are not in the dependency tree.
  45   cd "$var_tmp"
  46   xargs -a "$tmp"/db_removals -r repo-remove "${db_path##*/}"
  47
  48   # 5. Add symlinks to built packages.
  49   aur repo-parse -p "$db_path" --attr FileName | \
  50       xargs env -C "$db_root" realpath -z | xargs -0r ln -t "$var_tmp" -s --
  51
  52   # 6. Point the repository root in pacman.conf to the temporary directory.
  53   { printf '[options]\n'
  54     pacconf --raw --options
  55
  56     while IFS= read -r; do
  57         # section header
  58         printf '[%s]\n' "$REPLY"
  59
  60         if [[ $REPLY == "$db_name" ]]; then
  61             pacconf --raw --repo="$REPLY" --verbose Usage SigLevel
  62             printf '%s\n' "Server = file://$var_tmp"
  63         else
  64             pacconf --raw --repo="$REPLY" --verbose Usage SigLevel Server
  65         fi
  66     done < <(pacconf --repo-list)
  67   } >"$tmp"/pacman.conf
  68
  69   # 7. Run aur-sync(1) with the new pacman configuration.
  70   # Adjust options to preference.
  71   aur sync -d "$db_name" --pacman-conf="$tmp"/pacman.conf -Rrn $(<"$list")
  72
  73   # 8. Synchronize the new repository state to the original location.
  74   # Remove --dry-run if the output is as desired.
  75   set -x
  76   rsync -avh "$var_tmp"/ "$db_root"/ --delete \
  77         --copy-links --exclude={"$db_name".db,"$db_name".files} --dry-run
  78
  79   # 9. Save list with new dependency tree
  80   cp -v "$list" "$list".old
  81   aur repo-parse -p "$db_path" --list | cut -f1 >"$list"
  82
  83 ) 200> /tmp/lockfile