87 lines
2.9 KiB
Bash
87 lines
2.9 KiB
Bash
#! /usr/bin/env bash
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# Helper function
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is_sourced() {
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if [ -n "$ZSH_VERSION" ]; then
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case $ZSH_EVAL_CONTEXT in *:file:*) return 0;; esac
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else # Add additional POSIX-compatible shell names here, if needed.
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case ${0##*/} in dash|-dash|bash|-bash|ksh|-ksh|sh|-sh) return 0;; esac
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fi
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return 1; # NOT sourced.
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}
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BASE_0=${BASE_0:-$0}
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BASE_SHELL=$(basename "$SHELL")
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is_cmd() {
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type -- "${@}" 2> /dev/null 1> /dev/null
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}
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if is_sourced; then
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# shellcheck disable=SC2139 # This expands when defined, not when used.
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alias _r="unset DBG; exec $SHELL -l "
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# shellcheck disable=SC2139 # This expands when defined, not when used.
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alias _rdbg="exec sh -c 'DBG=1 $SHELL -l '"
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SZ_ENV_ROOT=$( cd -- "$( dirname -- "${BASE_0}" )" &> /dev/null && pwd )
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USER_HOME=$HOME
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[[ -n "${SUDO_USER}" ]] && USER_HOME="$(eval "echo ~${SUDO_USER}")"
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load_next() {
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[ "$LOAD_EXIT" != "0" ] && return 1
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if [[ -n "${DBG}" ]]; then
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echo "Loading ${1}..." 1>&2
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#shellcheck disable=SC2086
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${DBG/%1/:} 1>&2
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fi
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#shellcheck source=/dev/null
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. "${1}"
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}
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load_all() {
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local ALL_ENV_FILES
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if [ -z "$SZ_ENV_LOADED" ]; then
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SZ_ENV_LOADED=1
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LOAD_EXIT=0
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# The following constructs a list of load_next ... commands
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ALL_ENV_FILES="$(
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find ~/.config/sz.env -xdev -type d -not -name '*.off' \
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-exec sh -c '
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find "$1" -xdev -maxdepth 1 -type f -name "ID_*.env" | sort
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' shell '{}' ';' \
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-exec sh -c '
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find "$1" -xdev -maxdepth 1 -type f -name "PATH_*.env" | sort
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' shell '{}' ';' \
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-exec sh -c '
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find "$1" -xdev -maxdepth 1 -type f -name "*.env" -not -name "ID_*" -not -name "PATH_*" -print | sort
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' shell '{}' ';' \
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| sed -e 's/^/load_next "/; s/$/";/'
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)"
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if [ -n "$DBG_NO_SZ_LOAD" ]; then
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ALL_ENV_FILES=$(<<<"$ALL_ENV_FILES" sed -Ee '
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/PATH_/!s/^(load_next )/# \1/
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')
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printf 'Loading limited environment...\n'
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fi
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# Run the constructed (see above) list
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eval "$ALL_ENV_FILES"
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fi
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}
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load_all
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elif [[ "$1" == '-' ]]; then
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echo "BASE_0=${BASE_0}"
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cat "${0}"
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else
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is_cmd "${BASE_0##*/}" && SCRIPT_NAME="${BASE_0##*/}" || SCRIPT_NAME="${BASE_0/$HOME/\~}"
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printf '%s\n' \
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"It seems '$SCRIPT_NAME' was invoked as a standalone script." \
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'This script is designed to produce output that is sourced.' \
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'' \
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'The recommended way is to use calling pattern below:' \
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" $ . <( $SCRIPT_NAME - ) # Note the '-' after the script's name" \
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''
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fi
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