BlockBench File Reader

bbenchreader.js

const fs = require('fs');

function makeId (length) {
    var result           = '';
    var characters       = 'abcdefghijklmnopqrstuvwxyz';
    var charactersLength = characters.length;
    for ( var i = 0; i < length; i++ ) {
      result += characters.charAt(Math.floor(Math.random() * 
 charactersLength));
   }
   return result;
}

const fileName = './ASDF_my_texture.bbmodel'
const folderName = fileName.split('.')[fileName.split('.').length-2].replace(/\.|\//, '').toLowerCase()

let rawdata = fs.readFileSync(fileName);
let bbench = JSON.parse(rawdata);

const elements = bbench.elements.map(el => {
  inflate = 0

  if (el.inflate != undefined)
    inflate = el.inflate

  inflate *= 100
  inflate = Math.round(inflate) / 100

  objRes = {
    from: el.from.map(el => el-inflate),
    to: el.to.map(el => el+inflate),
    faces: Object.keys(el.faces).map(face => {
      if (el.faces[face].texture == undefined)
        el.faces[face].texture = '#missing'
      else
        el.faces[face].texture = '#' + el.faces[face]['texture']

      obj = {
        ...el.faces[face],
        texture: el.faces[face].texture
      }

      em = {}
      em[face] = obj
      return em
    })
  }

  if (el.rotation != undefined) {
    axis = ''
    angle = 0

    if (el.rotation[0] != 0) {
      axis = 'x'
      angle = el.rotation[0]
    } else if (el.rotation[1] != 0) {
      axis = 'y'
      angle = el.rotation[1]
    } else {
      axis = 'z'
      angle = el.rotation[2]
    }

    objRes.rotation = {
      angle: angle,
      axis: axis,
      origin: el.origin
    }
  } else {
    objRes.rotation = {
      angle: 0,
      axis: 'y',
      origin: el.origin
    }
  }

  return objRes
})

textureList = {}

for (textureIndex in bbench.textures) {
  const texture = bbench.textures[textureIndex]

  if (!fs.existsSync(folderName)){
      fs.mkdirSync(folderName);
  } else {
      fs.rmdirSync(folderName, { recursive: true });
      fs.mkdirSync(folderName);
  }

  var base64Data = texture.source.replace(/^data:image\/png;base64,/, "");
  const id = makeId(20)

  fs.writeFile(folderName + "/" + id + ".png", base64Data, 'base64', function(err) {
    if (err != null)
      console.log(err);
  });

  textureList[texture.id] = folderName + "/" + id
  textureList['particle'] = folderName + "/" + id
}

const parsed = {
	"textures": textureList,
  elements: elements,
  display: bbench.display
}


fs.writeFile(folderName + "/" + "data", JSON.stringify(parsed), function(err) {
  if (err != null)
    console.log(err);
});