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#!/bin/bash
set +o posix
quiet_cd() {
cd "$@" >/dev/null
}
symlink_target_directory() {
local target="$(readlink "$1")"
local target_dirname="$(dirname "$target")"
local directory="$2"
quiet_cd "$directory" && quiet_cd "$target_dirname" && pwd -P
}
BREW_FILE_DIRECTORY="$(quiet_cd "${0%/*}/" && pwd -P)"
HOMEBREW_BREW_FILE="${BREW_FILE_DIRECTORY%/}/${0##*/}"
HOMEBREW_PREFIX="${HOMEBREW_BREW_FILE%/*/*}"
# Default to / prefix if unset or the bin/brew file.
if [[ -z "$HOMEBREW_PREFIX" || "$HOMEBREW_PREFIX" = "$HOMEBREW_BREW_FILE" ]]
then
HOMEBREW_PREFIX="/"
fi
HOMEBREW_REPOSITORY="$HOMEBREW_PREFIX"
# Resolve the bin/brew symlink to find Homebrew's repository
if [[ -L "$HOMEBREW_BREW_FILE" ]]
then
BREW_FILE_DIRECTORY="$(symlink_target_directory "$HOMEBREW_BREW_FILE" "$BREW_FILE_DIRECTORY")"
HOMEBREW_REPOSITORY="${BREW_FILE_DIRECTORY%/*}"
fi
HOMEBREW_LIBRARY="$HOMEBREW_REPOSITORY/Library"
source "$HOMEBREW_LIBRARY/Homebrew/brew.sh"
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