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lib/utilities: Use variable indirection 

Don't use `local -n var` so that we can support v3.2...

Note: function names and variable names are different namespaces, so we can have a variable named the same as the function...which makes it really easy to predict default names for results when returning this way.
pull/1999/head
John D Pell 2021-12-28 22:53:26 -08:00
parent 2b5e531396
commit 7430a06ec2
1 changed files with 26 additions and 30 deletions
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56
lib/utilities.bash
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@ -79,49 +79,46 @@ function _bash-it-egrep() {
function _bash-it-component-help() {
local component file func
_bash-it-component-pluralize "${1}"
component="${_bash_it_component_pluralized_name?}"
_bash-it-component-cache-file "${component}"
file="${_bash_it_component_cache_filename?}"
if [[ ! -s "${file}" || -z "$(find "${file}" -mmin -300)" ]]; then
func="_bash-it-${component}"
_bash-it-component-pluralize "${1}" component
_bash-it-component-cache-file "${component}" file
if [[ ! -s "${file?}" || -z "$(find "${file}" -mmin -300)" ]]; then
func="_bash-it-${component?}"
"${func}" | _bash-it-egrep '\[[x ]\]' >| "${file}"
fi
cat "${file}"
}
function _bash-it-component-cache-file() {
local component file
_bash-it-component-pluralize "${1?${FUNCNAME[0]}: component name required}"
component="${_bash_it_component_pluralized_name?}"
file="${XDG_CACHE_HOME:-${BASH_IT?}/tmp/cache}${XDG_CACHE_HOME:+/bash_it}/${component}"
[[ -f "${file}" ]] || mkdir -p "${file%/*}"
printf -v _bash_it_component_cache_filename '%s' "${file}"
local _component_to_cache _file_path _result="${2:-${FUNCNAME[0]//-/_}}"
_bash-it-component-pluralize "${1?${FUNCNAME[0]}: component name required}" _component_to_cache
_file_path="${XDG_CACHE_HOME:-${BASH_IT?}/tmp/cache}${XDG_CACHE_HOME:+/bash_it}/${_component_to_cache?}"
[[ -f "${_file_path}" ]] || mkdir -p "${_file_path%/*}"
printf -v "${_result?}" '%s' "${_file_path}"
}
function _bash-it-component-singularize() {
[[ -n "${2:-}" ]] && local -n _bash_it_component_singularized_name="${2?}"
local component="${1?${FUNCNAME[0]}: component name required}"
local -i len="$((${#component} - 2))"
if [[ "${component:${len}:2}" == 'ns' ]]; then
component="${component%s}"
elif [[ "${component}" == "aliases" ]]; then
component="${component%es}"
local _result="${2:-${FUNCNAME[0]//-/_}}"
local _component_to_single="${1?${FUNCNAME[0]}: component name required}"
local -i len="$((${#_component_to_single} - 2))"
if [[ "${_component_to_single:${len}:2}" == 'ns' ]]; then
_component_to_single="${_component_to_single%s}"
elif [[ "${_component_to_single}" == "aliases" ]]; then
_component_to_single="${_component_to_single%es}"
fi
printf -v _bash_it_component_singularized_name '%s' "${component}"
printf -v "${_result?}" '%s' "${_component_to_single}"
}
function _bash-it-component-pluralize() {
[[ -n "${2:-}" ]] && local -n _bash_it_component_pluralized_name="${2?}"
local component="${1?${FUNCNAME[0]}: component name required}"
local -i len="$((${#component} - 1))"
local _result="${2:-${FUNCNAME[0]//-/_}}"
local _component_to_plural="${1?${FUNCNAME[0]}: component name required}"
local -i len="$((${#_component_to_plural} - 1))"
# pluralize component name for consistency
if [[ "${component:${len}:1}" != 's' ]]; then
component="${component}s"
elif [[ "${component}" == "alias" ]]; then
component="${component}es"
if [[ "${_component_to_plural:${len}:1}" != 's' ]]; then
_component_to_plural="${_component_to_plural}s"
elif [[ "${_component_to_plural}" == "alias" ]]; then
_component_to_plural="${_component_to_plural}es"
fi
printf -v _bash_it_component_pluralized_name '%s' "${component}"
printf -v "${_result?}" '%s' "${_component_to_plural}"
}
function _bash-it-clean-component-cache() {
@ -133,8 +130,7 @@ function _bash-it-clean-component-cache() {
_bash-it-clean-component-cache "${component}"
done
else
_bash-it-component-cache-file "${component}"
cache="${_bash_it_component_cache_filename?}"
_bash-it-component-cache-file "${component}" cache
if [[ -f "${cache}" ]]; then
rm -f "${cache}"
fi