Cleaned up the source. Renamed the file. Ready for release.

.gitignore

 node_modules
 .DS_Store
-secret.txt
+secret.salt
 codes.json
\ No newline at end of file

h2c2

+#!/bin/bash
+
+set -e
+
+node_modules/coffee-script/bin/coffee h2c2.coffee $1

generate-codes.coffee → h2c2.coffee

+################################################################################
+#
+# Hitchhiker’s Codes to the Galaxy
+#
+# Creates unique codes that include two random words from the
+# Hitchhiker’s Guide to the Galaxy and a hashid.
+#
+# See readme.md for usage details.
+#
+# Copyright © 2015 Aral Balkan. Released with ♥ by Ind.ie under the MIT License.
+#
+################################################################################
+
 assert = require 'assert'
 fs = require 'fs'
 path = require 'path'
 Picker = (require 'RandomSelection').Picker
 Hashids = require 'hashids'
 
-secret = 'M&dGJ=Vv%H7gV@6Giv(pk7v38aMQ7G;vUNm2^Vb@$Ep9i7P9}r'
+secret = fs.readFileSync path.join process.cwd(), 'secret.salt'
+
 hashids = new Hashids secret
 
 #
 # Load all the unique words from The Hitchhiker’s Guide to the Galaxy
 #
-hhgttg = JSON.parse(fs.readFileSync('all-unique-words-in-the-hitchhikers-guide.json'))
+hhgttg = JSON.parse fs.readFileSync 'all-unique-words-in-the-hitchhikers-guide.json'
 
-hhgttgPicker = new Picker(hhgttg)
+hhgttgPicker = new Picker hhgttg 
 
 #
 # Implementation of hash sieve algorithm that I read
@@ -44,31 +58,33 @@ generateCodes = (fromId, toId) ->
 
     for i in [fromId..toId]
         count++
-        process.stdout.write 'Generating code #' + count + ' (ID: '+i+')          \r'
+        process.stdout.write "Generating code ##{count} (ID: #{i})          \r"
         code = hashids.encode i
-        code = hhgttgPicker.pick().toLowerCase() + '-' + hhgttgPicker.pick().toLowerCase() + '-' + code
+        code = "#{hhgttgPicker.pick().toLowerCase()}-#{hhgttgPicker.pick().toLowerCase()}-#{code}"
         codes.push code
 
     codes = codes.unique()
     assert.equal numCodes, codes.length, 'All codes should be unique.'
-    console.log 'Generated ' + numCodes + ' codes (from ID ' + fromId + ' to ID ' + toId + ')'
+    console.log "Generated #{numCodes} codes (from ID #{fromId} to ID #{toId})."
 
     return codes
 
 
 generateCodesAndSaveToFile = (fromId, toId, fileName) =>
     codes = generateCodes fromId, toId
-    filePath = path.join process.cwd(), fileName + '.json'
+    filePath = path.join process.cwd(), fileName
     fs.writeFileSync filePath, JSON.stringify codes
 
 #
 # Generate waystone codes
 #
 
-tenThousandCodes = generateCodesAndSaveToFile 1, 1000000, 'codes.json'
-
-
-
+args = process.argv
 
+if args.count != 3
+    console.log 'Usage: ./h2c2 <number of codes to generate>'
+    process.exit
 
+numberOfCodesToGenerate = args[2]
 
+generateCodesAndSaveToFile 0, numberOfCodesToGenerate-1, 'codes.json'

package.json

 {
   "name": "waystone-codes",
   "version": "1.0.0",
-  "description": "Generates codes for Waystone",
+  "description": "Generates unique codes using words from HHGTTG and hashids.",
   "main": "generate-codes.coffee",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"
@@ -10,13 +10,16 @@
     "]"
   ],
   "author": "Aral Balkan",
-  "license": "Closed Source (this needs to be private)",
+  "license": "MIT",
   "dependencies": {
-    "RandomSelection": "^1.0.1",
-    "assert": "^1.1.2",
+    "RandomSelection": "1.0.1",
+    "assert": "1.1.2",
     "hashids": "1.0.1",
-    "random-word": "^1.0.0",
+    "random-word": "1.0.0",
     "shorthash": "0.0.2",
-    "uuid": "^2.0.1"
+    "uuid": "2.0.1"
+  },
+  "devDependencies": {
+    "coffee-script": "1.9.3"
   }
 }

readme.md

+# Hitchhiker’s Codes to the Galaxy
+
+Creates unique codes that include two random words from the [Hitchhiker’s Guide to the Galaxy][1] and a [hashid][2].
+
+Why not just hashids? 42.
+
+## Usage
+
+0. `npm install` to install the Node.js dependencies.
+
+1. Create a file called `secret.salt`.
+
+2. Put your secret salt in there (this can be any string).
+
+		h2c2 <numberOfCodesYouWantToGenerate>
+
+Codes will be saved in a file called `codes.json`.
+
+## License
+
+Copyright © 2015, Aral Balkan. Released with ♥ by Ind.ie under the MIT License.
+
+[1]:https://en.wikipedia.org/wiki/The_Hitchhiker%27s_Guide_to_the_Galaxy
+[2]:http://hashids.org
\ No newline at end of file

test-array-performance.coffee

-#
-# Just a quick test to make sure there are no performance overheads from reading in a large JSON array.
-# (There aren’t.)
-#
-randomWord = require 'random-word'
-fs = require 'fs'
-
-a = []
-s = Date.now()
-for i in [1..64000]
-	a.push randomWord()
-e = Date.now()
-
-fs.writeFileSync 'test.json', JSON.stringify(a)
-
-console.log('Generate + write took: ' + (e-s) + ' ms')
-
-s = Date.now()
-b = JSON.parse(fs.readFileSync 'test.json')
-e = Date.now()
-
-console.log('Read + parse took: ' + (e-s) + ' ms')
-