Fancy YAML parser

fancy_yaml.sh

# YAML Parser
# This function parse a simple YAML file and pass it to individual variables
# Usage: parse_yaml <FILE> [PREFIX]
# Thanks to: https://stackoverflow.com/questions/5014632/how-can-i-parse-a-yaml-file-from-a-linux-shell-script
parse_yaml() {
    local prefix=$2
    local ys='[[:space:]]*' yw='[a-zA-Z0-9_]*'
    
    local fs
    fs=$(echo @|tr @ '\034')

    sed -ne "s|^\($ys\):|\1|" \
            -e "s|^\($ys\)\($yw\)$ys:${ys}[\"']\(.*\)[\"']$ys\$|\1$fs\2$fs\3|p" \
            -e "s|^\($ys\)\($yw\)$ys:$ys\(.*\)$ys\$|\1$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);
        }
    }'
}