dsf

#!/bin/bash

# dsf -- directory specific functions
#
# TL;DR
#   -   add a file called ".__" containing shell functions in some directory
#   -   those functions are now available only in that directory and below
#
# for more, see "dsf.mkd" in the same place you found this file, probably https://github.com/sitaramc/notes/blob/master/dsf.mkd

shopt -s inherit_errexit
set -euo pipefail
IFS=$'\n\t'
# set -x
# export PS4=':.$LINENO:'

__files() (
    set +e
    while [[ $PWD == $HOME/* ]]; do
        [[ -f $PWD/.__ ]] && echo $PWD/.__
        cd ..
    done
    [[ -f $HOME/.__ ]] && echo $HOME/.__
    [[ -f /etc/.__  ]] && echo /etc/.__
)

# deal with help
[[ -z "${1:-}" ]] && set -- help
help() {
    cat `__files` |
        grep -E '^## ' | cut -c4-
}
die() { echo >&2 "$@"; exit 1; }

# actual functions get pulled in here
for __f in `__files`; do source $__f; done

[[ -n "${D:-}" ]] && set -x
"$@"