Read YAML file from Bash script

config.yml

development:
  path: ~/www

parse_yaml.sh

#!/bin/sh
# https://gist.githubusercontent.com/pkuczynski/8665367/raw/f81e1c9a2e23b302e9246a0820c0210bfe82ee81/parse_yaml.sh

parse_yaml() {
   local prefix=$2
   local s='[[:space:]]*' w='[a-zA-Z0-9_]*' fs=$(echo @|tr @ '\034')
   sed -ne "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);
      }
   }'
}

eval "$(parse_yaml $1 $2 | sed 's/~/$HOME/g')"

test.sh

#!/bin/sh

# include parse_yaml function
. parse_yaml.sh config.yml "config_"

# access yaml content
echo $config_development_path # will echo /home/YOURUSERNAME/www