util/

util/wordlists.js

@@ -0,0 +1,61 @@
+/* istanbul ignore file */
+var fetch = require('node-fetch')
+var fs = require('fs')
+var path = require('path')
+
+var log = console.log
+var WORDLISTS = [
+  'chinese_simplified',
+  'chinese_traditional',
+  'czech',
+  'english',
+  'french',
+  'italian',
+  'japanese',
+  'korean',
+  'portuguese',
+  'spanish'
+]
+
+function update () {
+  download().then(function (wordlists) {
+    var promises = Object.keys(wordlists).map(function (name) { return save(name, wordlists[name]) })
+    return Promise.all(promises)
+  })
+}
+
+function download () {
+  var wordlists = {}
+
+  var promises = WORDLISTS.map(function (name) {
+    return fetchRaw(name).then(toJSON).then(function (wordlist) { wordlists[name] = wordlist })
+  })
+
+  return Promise.all(promises).then(function () { return wordlists })
+}
+
+function fetchRaw (name) {
+  var url = 'https://raw.githubusercontent.com/bitcoin/bips/master/bip-0039/' + name + '.txt'
+  log('download ' + url)
+
+  return fetch(url).then(function (response) { return response.text() })
+}
+
+function toJSON (content) {
+  return content.trim().split('\n').map(function (word) { return word.trim() })
+}
+
+function save (name, wordlist) {
+  var location = path.join(__dirname, '..', 'ts_src', 'wordlists', name + '.json')
+  var content = JSON.stringify(wordlist, null, 2) + '\n'
+  log('save ' + wordlist.length + ' words to ' + location)
+
+  return new Promise(function (resolve, reject) {
+    fs.writeFile(location, content, function (err) {
+      if (err) reject(err)
+      else resolve()
+    })
+  })
+}
+
+module.exports = { update: update, download: download }