## YAML parser [@bashly-upgrade yaml] ## This file is a part of Bashly standard library ## Does not support arrays, only hashes ## ## Source: stackoverflow.com/a/21189044/413924 ## ## Usage: ## ## yaml_load “settings.yml” # print variables ## yaml_load “settings.yml” “config_” # use prefix ## eval $(yaml_load “settings.yml”) # create variables in scope ## yaml_load() {

local prefix=$2
local s='[[:space:]]*' w='[a-zA-Z0-9_]*'
local fs

fs=$(echo @ | tr @ '\034')

sed -ne "s|^\($s\):|\1|" \
  -e "s|^\($s\)\($w\)$s:${s}[\"']\(.*\)[\"']$s\$|\1$fs\2$fs\3|p" \
  -e "s|^\($s\)\($w\)$s:$s\(.*\)$s\$|\1$fs\2$fs\3|p" "$1" |
  awk -F"$fs" '{
    indent = length($1)/2;
    vname[indent] = $2;
    for (i in vname) {if (i > indent) {delete vname[i]}}
    if (length($3) > 0) {
       vn=""; for (i=0; i<indent; i++) {vn=(vn)(vname[i])("_")}
       printf("%s%s%s=\"%s\"\n", "'"$prefix"'",vn, $2, $3);
    }
  }'

}