convert kotlin data class toString into json in terminal

convert_ktStr_to_json.sh

# motivation: it's not easy to look println(dataClass)
#
# example: 
#   input: Movie(title=Inception, year=2010, director=Person(firstName=Christopher, lastName=Nolan))
#   output: {
#     "title": "Inception",
#     "year": "2010",
#     "director": {
#       "firstName": "Christopher",
#       "lastName": "Nolan"
#     }
#   }
#
# note: I used gnu-sed (brew install gnu-sed) on macOS

echo "$DATA" \
    | sed -E 's/\w+\(/\(/g'  \
    | sed -E 's/=/"="/g'  \
    | sed -E 's/, /", "/g'  \
    | sed -E 's/\(/\{"/g'  \
    | sed -E 's/(\w)\)/\1"\)/g'  \
    | sed -E 's/\)/\}/g'  \
    | sed -E 's/="\{/:\{/g'  \
    | sed -E 's/\}"/\}/g'  \
    | sed -E 's/=/:/g'  \
    | jq

NOTE: this snippet has many caveats, so I don't use it anymore.