MIAOU-BASH is a collection of settings and helpers for leveraging BASH. Developer-friendly, it may be used as solo package with or without the miaou project.
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#!/usr/bin/env miaou-bash
function array_new {
ref_name="$1"
shift
[[ -v nested_count ]] && ((nested_count++)) || nested_count=1
nested_name="nested_$nested_count"
declare -ga "$nested_name"
declare -gn "$ref_name"="$nested_name"
local -n internal="$nested_name"
internal+=("$@")
}
function array_inspect {
local ref prefix i
declare -n ref="$1"
prefix="${2:-}"
echo "${prefix}array '$1' contains ${#ref[@]} elements"
for i in "${ref[@]}"; do
if [[ -R $i ]]; then
array_inspect "$i" "${prefix} => "
else
echo "${prefix}-> $i"
fi
done
echo "${prefix}----"
}
# initialization
array_new mine1 'Albert' 20
array_new mine2 'Bob' 24
array_new mine3 'Conrad' 31 true
array_new nested mine1 mine2 mine3
array_inspect nested
# change values
mine1+=(false)
: "$mine3" # pseudo use fix shellcheck issue
mine3[1]=$((mine3[1] + 8))
mine3[2]=false
array_inspect nested
# nested twice
declare -n other="${nested[1]:?}" # ':?' fix shellcheck issue
: "${other}" # pseudo use fix shellcheck issue
array_inspect other
array_new mine4 'Darryl' 30
other+=(mine4)
array_inspect nested
# nested_new nested1 mine1 mine2 mine3
# nested_inspect nested1
#
# # change nested values
# declare -n first="${nested1[0]:?}" # ':?' fix shellcheck issue
# first+=("nope")
# first[1]=$((first[1] + 5))
# nested_inspect nested1