142 lines
2.4 KiB
Bash
142 lines
2.4 KiB
Bash
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#!/usr/bin/env bash
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# shebang for syntax detection, not a command
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# do *not* set executable!
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declare -Ag _modules_
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shopt -s expand_aliases
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alias _args_='(( $# ))'
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alias _to_args_='set --'
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module.already_loaded () {
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declare -Ag _modules_
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[[ -v _modules_[${BASH_SOURCE[1]}] ]]
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}
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_blank_ () {
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[[ -z ${1:-} ]]
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}
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_defined_ () {
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[[ -v $1 ]]
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}
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_eq_ () {
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[[ $1 == "${2:-}" ]]
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}
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_functions_ () {
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env -i bash <<END
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shopt -s expand_aliases
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alias source=:
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\\source $1 &>/dev/null
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compgen -A function;:
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END
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}
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_in_ () {
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[[ $IFS$1$IFS == *"$IFS$2$IFS"* ]]
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}
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_pop_ () {
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local -n ref1=$1
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local ref2=${2:-}
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_present_ $ref2 && printf -v $ref2 %s "${ref1[-1]}"
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unset -v $1[-1]
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}
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_present_ () {
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[[ -n ${1:-} ]]
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}
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_push_ () {
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local -n ref=$1
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ref+=( "$2" )
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}
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_parent_=${BASH_SOURCE[1]:-}
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[[ ${1:-} != module ]] && return
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set -- ${*:2}
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_numargs_+=( $# )
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{ ! _args_ && _present_ ${_file_:-} && _eq_ $_parent_ $_file_ ;} && return
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{ ! _args_ && _present_ $_parent_ && ! _eq_ ${_parent_##*/} module ;} && {
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_in_ "${_ancestors_[*]:-}" $_parent_ && return
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_push_ _ancestors_ $_parent_
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}
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! _args_ && _to_args_ $_parent_
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for _file_; do
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_module_=${_file_%%=*}
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_file_=${_file_#*=}
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_defined_ _modules_[$_file_] && continue
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_eq_ $_module_ $_file_ && {
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_module_=${_module_##*/}
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_module_=${_module_%.*}
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}
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_prefixes_+=( $_module_ )
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_push_ _aliases_ "$(alias)"
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unalias -a
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_functions_=$(_functions_ $_file_)
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for _function_ in $_functions_; do
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printf -v _prefix_ %s. ${_prefixes_[*]}
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alias $_function_=$_prefix_$_function_
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done
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_push_ _files_ $_file_
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_push_ _funcs_ "$_functions_"
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set --
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source $_file_
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unset -v _prefixes_[-1]
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_pop_ _files_ _file_
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_pop_ _funcs_ _functions_
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_modules_[$_file_]=''
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for _function_ in $_functions_; do
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unalias $_function_
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done
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eval "${_aliases_[-1]}"
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_pop_ _aliases_
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done
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! (( ${#_files_[*]} )) && {
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unalias _args_
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unalias _to_args_
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unset -f _blank_
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unset -f _defined_
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unset -f _eq_
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unset -f _in_
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unset -f _pop_
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unset -f _present_
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unset -f _push_
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unset -v _file_
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unset -v _funcs_
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unset -v _function_
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unset -v _functions_
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unset -v _module_
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unset -v _name_
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unset -v _parent_
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unset -v _prefix_
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unset -v _prefixes_
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}
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{ ! (( _numargs_[-1] )) && [[ -n ${BASH_SOURCE[1]} && ${BASH_SOURCE[1]##*/} != module ]] ;} && unset -v _ancestors_[-1]
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unset -v _numargs_[-1]
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