Added support for phonetic key naming

Closes #7

README.md

@@ -38,6 +38,32 @@ which will output a URL to share containing the contents of `cat something`'s ST
 * `documents` - static documents to serve (ex: http://hastebin.com/about.com) in addition to static assets.  These will never expire.
 * `storage` - storage options (see below)
 * `logging` - logging preferences
+* `keyGenerator` - key generator options (see below)
+
+## Key Generation
+
+### Phonetic
+
+Attempts to generate phonetic keys, similar to `pwgen`
+
+``` json
+{
+	"type": "phonetic"
+}
+```
+
+### Random
+
+Generates a random key
+
+``` json
+{
+	"type": "random",
+  "keyspace": "abcdef"
+}
+```
+
+The _optional_ keySpace argument is a string of acceptable characters for the key.
 
 ## Storage
 

config.js

@@ -19,6 +19,10 @@
     }
   ],
 
+  "keyGenerator": {
+    "type": "phonetic"
+  },
+
   "storage": {
     "type": "redis",
     "host": "localhost",

lib/document_handler.js

@@ -9,6 +9,7 @@ var DocumentHandler = function(options) {
   this.keyLength = options.keyLength || DocumentHandler.defaultKeyLength;
   this.maxLength = options.maxLength; // none by default
   this.store = options.store;
+  this.keyGenerator = options.keyGenerator;
 };
 
 DocumentHandler.defaultKeyLength = 10;
@@ -87,7 +88,7 @@ DocumentHandler.prototype.handlePost = function(request, response) {
 
 // Get a random key that hasn't been already used
 DocumentHandler.prototype.chooseKey = function(callback) {
-  var key = this.randomKey();
+  var key = this.keyGenerator.createKey(this.keyLength);
   var _this = this;
   this.store.get(key, function(ret) {
     if (ret) {
@@ -98,14 +99,4 @@ DocumentHandler.prototype.chooseKey = function(callback) {
   }); 
 };
 
-// Generate a random key
-DocumentHandler.prototype.randomKey = function() {
-  var text = '';
-  var keyspace = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
-  for (var i = 0; i < this.keyLength; i++) {
-    text += keyspace.charAt(Math.floor(Math.random() * keyspace.length));
-  }
-  return text;
-};
-
 module.exports = DocumentHandler;

lib/key_generators/phonetic.js

@@ -0,0 +1,32 @@
+// Draws inspiration from pwgen and http://tools.arantius.com/password
+var PhoneticKeyGenerator = function(options) {
+  // No options
+};
+
+// Generate a phonetic key
+PhoneticKeyGenerator.prototype.createKey = function(keyLength) {
+  var text = '';
+  for (var i = 0; i < keyLength; i++) {
+    text += (i % 2 == 0) ? this.randConsonant() : this.randVowel();
+  }
+  return text;
+};
+
+PhoneticKeyGenerator.consonants = 'bcdfghjklmnpqrstvwxy';
+PhoneticKeyGenerator.vowels = 'aeiou';
+
+// Get an random vowel
+PhoneticKeyGenerator.prototype.randVowel = function() {
+  return PhoneticKeyGenerator.vowels[
+    Math.floor(Math.random() * PhoneticKeyGenerator.vowels.length)
+  ];
+};
+
+// Get an random consonant
+PhoneticKeyGenerator.prototype.randConsonant = function() {
+  return PhoneticKeyGenerator.consonants[
+    Math.floor(Math.random() * PhoneticKeyGenerator.consonants.length)
+  ];
+};
+
+module.exports = PhoneticKeyGenerator;

lib/key_generators/random.js

@@ -0,0 +1,14 @@
+var RandomKeyGenerator = function(options) {
+  this.keyspace = options.keyspace || 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
+};
+
+// Generate a random key
+RandomKeyGenerator.prototype.createKey = function(keyLength) {
+  var text = '';
+  for (var i = 0; i < keyLength; i++) {
+    text += this.keyspace.charAt(Math.floor(Math.random() * this.keyspace.length));
+  }
+  return text;
+};
+
+module.exports = RandomKeyGenerator;

server.js

@@ -72,11 +72,18 @@ for (var name in config.documents) {
   });
 }
 
+// Pick up a key generator
+var pwOptions = config.keyGenerator || {};
+pwOptions.type = pwOptions.type || 'random';
+var gen = require('./lib/key_generators/' + pwOptions.type);
+var keyGenerator = new gen(pwOptions);
+
 // Configure the document handler
 var documentHandler = new DocumentHandler({
   store: preferredStore,
   maxLength: config.maxLength,
-  keyLength: config.keyLength
+  keyLength: config.keyLength,
+  keyGenerator: keyGenerator
 });
 
 // Set the server up with a static cache