tag-rename

#!/usr/bin/env node
const fs = require('fs')
const forEach = require('async-foreach').forEach
const ArgumentParser = require('argparse').ArgumentParser
var parser = new ArgumentParser({
  addHelp: true,
  description: 'Add a tag to all language files'
})

let all = {}
let allData = {}

parser.addArgument('from', {
  help: 'Tag, e.g. amenity=retaurant'
})

parser.addArgument('to', {
  help: 'Tag, e.g. amenity=restaurant'
})

parser.addArgument([ '-d', '--description' ], {
  help: 'Change description'
})

let args = parser.parseArgs()

fs.readdir('tags/', function (err, files) {
  forEach(files, function (file) {
    let m = file.match(/^(.*)\.json$/)
    if (!m) {
      return
    }

    let done = this.async()

    fs.readFile('tags/' + file, (err, contents) => {
      let data

      try {
        data = JSON.parse(contents)
      } catch (e) {
        return done()
      }

      if (!data) {
        return done()
      }

      if ('tag:' + args.from in data) {
        data['tag:' + args.to] = data['tag:' + args.from]
        delete data['tag:' + args.from]

        if (args.description) {
          data['tag:' + args.to].description = args.description
        }
      }

      var ret = {}
      var keys = Object.keys(data)
      keys.sort()

      for (var i = 0; i < keys.length; i++) {
        ret[keys[i]] = data[keys[i]]
      }

      fs.writeFile('tags/' + file, JSON.stringify(ret, null, '    ') + '\n', done)
    })
  },
  allDone)
})

function allDone () {
}