-# Stolen from
+# Initially based on
# https://github.com/joshuaclayton/dotfiles/blob/master/zsh_profile.d/autoenv.zsh
-export ENV_AUTHORIZATION_FILE=$HOME/.env_auth
+export AUTOENV_ENV_FILENAME=$HOME/.env_auth
+
+# Name of file to look for when entering directories.
+: ${DOTENV_FILE_ENTER:=.env}
+
+# Name of file to look for when leaving directories.
+# Requires DOTENV_HANDLE_LEAVE=1.
+: ${DOTENV_FILE_LEAVE:=.env.leave}
+
+# Look for .env in parent dirs?
+: ${DOTENV_LOOK_UPWARDS:=1}
+
+# Handle leave events when changing away from a subtree, where an "enter"
+# event was handled?
+: ${DOTENV_HANDLE_LEAVE:=1}
+
+
+# Internal: stack of entered (and handled) directories.
+_dotenv_stack_entered=()
+
_dotenv_hash_pair() {
- env_file=$1
- env_shasum=$(shasum $env_file | cut -d' ' -f1)
- echo "$env_file:$env_shasum"
+ local env_file=$1
+ echo "$env_file:$env_shasum:1"
}
_dotenv_authorized_env_file() {
- env_file=$1
- pair=$(_dotenv_hash_pair $env_file)
- touch $ENV_AUTHORIZATION_FILE
- \grep -Gq $pair $ENV_AUTHORIZATION_FILE
+ local env_file=$1
+ local pair=$(_dotenv_hash_pair $env_file)
+ test -f $AUTOENV_ENV_FILENAME \
+ && \grep -qF $pair $AUTOENV_ENV_FILENAME
}
_dotenv_authorize() {
- env_file=$1
+ local env_file=$1
_dotenv_deauthorize $env_file
- _dotenv_hash_pair $env_file >> $ENV_AUTHORIZATION_FILE
+ _dotenv_hash_pair $env_file >> $AUTOENV_ENV_FILENAME
}
_dotenv_deauthorize() {
- env_file=$1
- echo $(grep -Gv $env_file $ENV_AUTHORIZATION_FILE) > $ENV_AUTHORIZATION_FILE
+ local env_file=$1
+ if [[ -f $AUTOENV_ENV_FILENAME ]]; then
+ echo $(\grep -vF $env_file $AUTOENV_ENV_FILENAME) > $AUTOENV_ENV_FILENAME
+ fi
}
-_dotenv_print_unauthorized_message() {
- echo "Attempting to load unauthorized env: $1"
- echo ""
- echo "**********************************************"
- echo ""
- cat $1
- echo ""
- echo "**********************************************"
- echo ""
- echo "Would you like to authorize it? (y/n)"
+# This function can be mocked in tests
+_dotenv_read_answer() {
+ local answer
+ read $=_AUTOENV_TEST_READ_ARGS -q answer
+ echo $answer
}
-_dotenv_source_env() {
- local env_file="$PWD/.env"
+# Args: 1: absolute path to env file (resolved symlinks).
+_dotenv_check_authorized_env_file() {
+ if ! [[ -f $1 ]]; then
+ return 1
+ fi
+ if ! _dotenv_authorized_env_file $1; then
+ echo "Attempting to load unauthorized env file: $1"
+ echo ""
+ echo "**********************************************"
+ echo ""
+ cat $1
+ echo ""
+ echo "**********************************************"
+ echo ""
+ echo -n "Would you like to authorize it? [y/N] "
- if [[ -f $env_file ]]
- then
- if _dotenv_authorized_env_file $env_file
- then
- source $env_file
- return 0
+ local answer=$(_dotenv_read_answer)
+ echo
+ if [[ $answer != 'y' ]]; then
+ return 1
fi
- _dotenv_print_unauthorized_message $env_file
+ _dotenv_authorize $1
+ fi
+ return 0
+}
+
+# Initialize $_dotenv_sourced_varstash, but do not overwrite an existing one
+# from e.g. `exec zsh` (to reload your shell config).
+: ${_dotenv_sourced_varstash:=0}
+
+# Get directory of this file (absolute, with resolved symlinks).
+_dotenv_this_dir=${0:A:h}
+
+_dotenv_source() {
+ local env_file=$1
+ _dotenv_event=$2
+ _dotenv_cwd=$3
- read answer
+ # Source varstash library once.
+ if [[ $_dotenv_sourced_varstash == 0 ]]; then
+ source $_dotenv_this_dir/lib/varstash
+ export _dotenv_sourced_varstash=1
+ # NOTE: Varstash uses $PWD as default for varstash_dir, we might set it to
+ # ${env_file:h}.
+ fi
+
+ # Change to directory of env file, source it and cd back.
+ local new_dir=$PWD
+ builtin cd -q $_dotenv_cwd
+ source $env_file
+ builtin cd -q $new_dir
+
+ unset _dotenv_event _dotenv_cwd
+}
+
+_dotenv_chpwd_handler() {
+ local env_file="$PWD/$DOTENV_FILE_ENTER"
+
+ # Handle leave event for previously sourced env files.
+ if [[ $DOTENV_HANDLE_LEAVE == 1 ]] && (( $#_dotenv_stack_entered )); then
+ for prev_dir in ${_dotenv_stack_entered}; do
+ if ! [[ ${PWD}/ == ${prev_dir}/* ]]; then
+ local env_file_leave=$prev_dir/$DOTENV_FILE_LEAVE
+ if _dotenv_check_authorized_env_file $env_file_leave; then
+ _dotenv_source $env_file_leave leave $prev_dir
+ fi
+ # Remove this entry from the stack.
+ _dotenv_stack_entered=(${_dotenv_stack_entered#$prev_dir})
+ fi
+ done
+ fi
- if [[ $answer == 'y' ]]
- then
- _dotenv_authorize $env_file
- source $env_file
+ if ! [[ -f $env_file ]] && [[ $DOTENV_LOOK_UPWARDS == 1 ]]; then
+ # Look for files in parent dirs, using an extended Zsh glob.
+ setopt localoptions extendedglob
+ local m
+ m=((../)#${DOTENV_FILE_ENTER}(N))
+ if (( $#m )); then
+ env_file=${${m[1]}:A}
+ else
+ return
fi
fi
+
+ if ! _dotenv_check_authorized_env_file $env_file; then
+ return
+ fi
+
+ # Load the env file only once: check if $env_file's parent
+ # is in $_dotenv_stack_entered.
+ local env_file_dir=${env_file:A:h}
+ if (( ${+_dotenv_stack_entered[(r)${env_file_dir}]} )); then
+ return
+ fi
+
+ _dotenv_stack_entered+=(${env_file_dir})
+
+ _dotenv_source $env_file enter $PWD
}
-chpwd_functions=($chpwd_functions _dotenv_source_env)
+autoload -U add-zsh-hook
+add-zsh-hook chpwd _dotenv_chpwd_handler
+
+# Look in current directory already.
+_dotenv_chpwd_handler