georender-pack examples for files

decode-file.js

var xhr = require('xhr')
var decode = require('../decode.js')

var buffers = []
xhr.get('./alexbufarr', function(err, resp) { //input filename is hardcoded here
  resp.body.split('\n').forEach(function(line){
    if (line.length != 0){
      buffers.push(Buffer.from(line, 'base64'))
    }
    else return
  })
  console.log(decode(buffers))
})

encode-file.js

//sample usage: node encode-file.js alexandria.pbf > alexlabelbuf3

var fs = require('fs')
var through = require('through2')
var parseOSM = require('osm-pbf-parser')
var georenderPack = require('../encode.js')
 
var osm = parseOSM()
var allItems = {}
var itemsRefsObject = {}

fs.createReadStream(process.argv[2])
  .pipe(osm)
  .pipe(through.obj(write, end))

function write (items, enc, next) {
  items.forEach(function (item) {
    if (item.type === 'node') {
      allItems[item.id] = item
    }
    else if (item.type === 'way') {
      allItems[item.id] = item
      item.refs.forEach(function (ref) {
        if (!itemsRefsObject[ref]) itemsRefsObject[ref] = allItems[ref]
        else return
      })
    }
  })
  next()
}
function end (next) {
  Object.values(allItems).forEach(function (item) {
    //console.log(georenderPack(item, itemsRefsObject).toString('hex'))
    console.log(georenderPack(item, itemsRefsObject).toString('base64'))
  })
}