plugins/homebrew/homebrew.zshrc

   1 # AX-ZSH: Alex' Modular ZSH Configuration
   2 # homebrew.zshrc -- Setup Homebrew Package Manager
   3
   4 # Make sure that "brew(1)" is installed
   5 (( $+commands[brew] )) || return 1
   6
   7 if [[ -n "$AXZSH_PLUGIN_CHECK" ]]; then
   8         # Make sure brew command is working
   9         brew --version >/dev/null 2>&1 || return 1
  10 fi
  11
  12 function brew() {
  13         # This wrapper function for the brew(1) command does the following:
  14         # - Detect the location of the "real" brew(1) command.
  15         # - Change user and group when the Homebrew installation is owned by a
  16         #   different user (to preserve sane file permissions).
  17         # - Set a relaxed umask(1) so that other users can use software
  18         #   installed by Homebrew.
  19         # - Call the "real" brew(1) command.
  20
  21         if [ -x /home/linuxbrew/.linuxbrew/bin/brew ]; then
  22                 real_brew_cmd="/home/linuxbrew/.linuxbrew/bin/brew"
  23         elif [ -x /opt/homebrew/bin/brew ]; then
  24                 real_brew_cmd="/opt/homebrew/bin/brew"
  25         elif [ -x /usr/local/bin/brew ]; then
  26                 real_brew_cmd="/usr/local/bin/brew"
  27         else
  28                 if [ "$1" != "shellenv" ] && [ "$1" != "--prefix" ]; then
  29                         echo "Oops, real \"brew\" command not found!? [for \"$1\"]" >&2
  30                 fi
  31                 return 101
  32         fi
  33
  34         brew_prefix=$("$real_brew_cmd" --prefix) || return 102
  35
  36         if [[ $(stat -c %u "$brew_prefix") -eq $UID ]]; then
  37                 # We are the owner of the Homebrew installation.
  38                 (
  39                         [[ $# -eq 0 && -t 1 ]] \
  40                                 && echo "Running \"$real_brew_cmd\" ..."
  41                         umask 0022 || return 103
  42                         "$real_brew_cmd" "$@"
  43                 )
  44         else
  45                 # We are a different user than the owner of the Homebew
  46                 # installation. So we need to change the user when running the
  47                 # real "brew" command!
  48                 priv_exec="umask 0022 || exit 103; \"$real_brew_cmd\" $*"
  49                 (
  50                         cd /tmp
  51                         user="$(stat -c %U "$brew_prefix")"
  52                         group="$(stat -c %G "$brew_prefix")"
  53                         [[ $# -eq 0 && -t 1 ]] \
  54                                 && echo "Running \"$real_brew_cmd\" as user \"$user:$group\" ..."
  55                         sudo -u "$user" -g "$group" -- sh -c "$priv_exec"
  56                 )
  57         fi
  58         return $?
  59 }