A small utility script to generate LambdaBetterGrass data in bulk

lambdabettergrass_gen.bash

#!/usr/bin/env bash

modid='terrestria'
input_base='client/src/main/resources/'
output_base='run/resourcepacks/bettergrass/'

input_resources="$input_base/assets/$modid/"
output_resources="$output_base/assets/$modid/"

# params: search text, (optional) data override, (optional) variant
# If `-d` not passed, an empty data file is generated
# If `-v` not passed, no variants are listed
gen_files() {
  local OPTIND arg search data variant
  while getopts 's:d:v:' arg; do
    case ${arg} in
    s) search=${OPTARG} ;;
    d) data=${OPTARG} ;;
    v) variant=${OPTARG} ;;
    *) return 1 ;;
    esac
  done

  readarray -t BLOCK_NAMES < <(find "$input_resources/blockstates/" -type f -printf "%f\n" | grep -E "(^|_)$search(_|.json$)" | perl -ne "print if s/^(.*)\.json$/\1/")
  for block in "${BLOCK_NAMES[@]}"; do
    echo "$search $data $variant $block"

    if [ -z "$data" ]; then      # data missing
      if [ -z "$variant" ]; then # variant missing
        echo "\
{
  \"type\": \"layer\",
  \"data\": \"$modid:bettergrass/data/$block\"
}" >"$output_resources/bettergrass/states/$block.json"
      else # variant present
        echo "\
{
  \"type\": \"layer\",
  \"variants\":{
    \"$variant\": {
      \"data\": \"$modid:bettergrass/data/$block\"
    }
  }
}" >"$output_resources/bettergrass/states/$block.json"
      fi
      # data missing, make empty data file
      echo "\
{}" >"$output_resources/bettergrass/data/$block.json"
    else                         # data present
      if [ -z "$variant" ]; then # variant missing
        echo "\
{
  \"type\": \"layer\",
  \"data\": \"$data\"
}" >"$output_resources/bettergrass/states/$block.json"
      else # variant present
        echo "\
{
  \"type\": \"layer\",
  \"variants\":{
    \"$variant\": {
      \"data\": \"$data\"
    }
  }
}" >"$output_resources/bettergrass/states/$block.json"
      fi
    fi
  done
}

gen_files -s 'fence' -v 'waterlogged=false'
gen_files -s 'trapdoor' -v 'waterlogged=false'
gen_files -s 'door'
gen_files -s 'fence_gate'
gen_files -s 'sapling'
gen_files -s 'potted'
gen_files -s 'button' -d 'minecraft:bettergrass/data/button'
gen_files -s 'aloe'
gen_files -s 'agave'
gen_files -s 'dead_grass'
gen_files -s 'tiny_cactus'
gen_files -s 'monsteras'
gen_files -s 'indian_paintbrush'