# — # YAML parser # 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);
   }
}'

}