Added in automatic inflection on english strings. Non-english strings may be added to the "irregular" array.

application/config/strings.php

@@ -11,22 +11,90 @@
 	| the "singular" and "plural" methods on the Str class to convert a given
 	| word from singular to plural and vice versa.
 	|
-	| This simple array is in constrast to the complicated regular expression
+	| Note that the regular expressions are only for inflecting English words.
-	| patterns used by other frameworks. We think you'll enjoy the speed and
+	| To inflect a non-English string, simply add its singular and plural
-	| simplicity of this solution.
+	| form to the array of "irregular" word forms.
-	|
-	| When adding a word to the array, the key should be the singular form,
-	| while the array value should be the plural form. We've included an
-	| example to get you started!
 	|
 	*/
 
-	'inflection' => array(
+	'plural' => array(
+		'/(quiz)$/i' => "$1zes",
+		'/^(ox)$/i' => "$1en",
+		'/([m|l])ouse$/i' => "$1ice",
+		'/(matr|vert|ind)ix|ex$/i' => "$1ices",
+		'/(x|ch|ss|sh)$/i' => "$1es",
+		'/([^aeiouy]|qu)y$/i' => "$1ies",
+		'/(hive)$/i' => "$1s",
+		'/(?:([^f])fe|([lr])f)$/i' => "$1$2ves",
+		'/(shea|lea|loa|thie)f$/i' => "$1ves",
+		'/sis$/i' => "ses",
+		'/([ti])um$/i' => "$1a",
+		'/(tomat|potat|ech|her|vet)o$/i' => "$1oes",
+		'/(bu)s$/i' => "$1ses",
+		'/(alias)$/i' => "$1es",
+		'/(octop)us$/i' => "$1i",
+		'/(ax|test)is$/i' => "$1es",
+		'/(us)$/i' => "$1es",
+		'/s$/i' => "s",
+		'/$/' => "s"
+	),
 
-		'user'    => 'users',
+	'singular' => array(
+		'/(quiz)zes$/i' => "$1",
+		'/(matr)ices$/i' => "$1ix",
+		'/(vert|ind)ices$/i' => "$1ex",
+		'/^(ox)en$/i' => "$1",
+		'/(alias)es$/i' => "$1",
+		'/(octop|vir)i$/i' => "$1us",
+		'/(cris|ax|test)es$/i' => "$1is",
+		'/(shoe)s$/i' => "$1",
+		'/(o)es$/i' => "$1",
+		'/(bus)es$/i' => "$1",
+		'/([m|l])ice$/i' => "$1ouse",
+		'/(x|ch|ss|sh)es$/i' => "$1",
+		'/(m)ovies$/i' => "$1ovie",
+		'/(s)eries$/i' => "$1eries",
+		'/([^aeiouy]|qu)ies$/i' => "$1y",
+		'/([lr])ves$/i' => "$1f",
+		'/(tive)s$/i' => "$1",
+		'/(hive)s$/i' => "$1",
+		'/(li|wi|kni)ves$/i' => "$1fe",
+		'/(shea|loa|lea|thie)ves$/i' => "$1f",
+		'/(^analy)ses$/i' => "$1sis",
+		'/((a)naly|(b)a|(d)iagno|(p)arenthe|(p)rogno|(s)ynop|(t)he)ses$/i' => "$1$2sis",
+		'/([ti])a$/i' => "$1um",
+		'/(n)ews$/i' => "$1ews",
+		'/(h|bl)ouses$/i' => "$1ouse",
+		'/(corpse)s$/i' => "$1",
+		'/(us)es$/i' => "$1",
+		'/(us|ss)$/i' => "$1",
+		'/s$/i' => "",
+	),
+
+	'irregular' => array(
+		'child' => 'children',
+		'foot' => 'feet',
+		'goose' => 'geese',
+		'man' => 'men',
+		'move' => 'moves',
 		'person' => 'people',
-		'comment' => 'comments',
+		'sex' => 'sexes',
+		'tooth' => 'teeth',
+	),
 
+	'uncountable' => array(
+		'audio',
+		'equipment',
+		'deer',
+		'fish',
+		'gold',
+		'information',
+		'money',
+		'rice',
+		'police',
+		'series',
+		'sheep',
+		'species',
 	),
 
 	/*

laravel/pluralizer.php

@@ -0,0 +1,130 @@
+<?php namespace Laravel;
+
+class Pluralizer {
+
+	/**
+	 * The "strings" configuration array.
+	 *
+	 * @var array
+	 */
+	protected $config;
+
+	/**
+	 * The cached copies of the plural inflections.
+	 */
+	protected $plural = array();
+
+	/**
+	 * The cached copies of the singular inflections.
+	 *
+	 * @var array
+	 */
+	protected $singular = array();
+
+	/**
+	 * Create a new pluralizer instance.
+	 *
+	 * @return void
+	 */
+	public function __construct($config)
+	{
+		$this->config = $config;
+	}
+
+	/**
+	 * Get the singular form of the given word.
+	 *
+	 * @param  string  $value
+	 * @return string
+	 */
+	public function singular($value)
+	{
+		// First we'll check the cache of inflected values. We cache each word that
+		// is inflected so we don't have to spin through the regular expressions
+		// each time we need to inflect a given value for the developer.
+		if (isset($this->singular[$value]))
+		{
+			return $this->singular[$value];
+		}
+
+		// English words may be automatically inflected using regular expressions.
+		// If the word is english, we'll just pass off the word to the automatic
+		// inflection method and return the result, which is cached.
+		$irregular = $this->config['irregular'];
+
+		$result = $this->auto($value, $this->config['singular'], $irregular);
+
+		return $this->singular[$value] = $result ?: $value;
+	}
+
+	/**
+	 * Get the plural form of the given word.
+	 *
+	 * @param  string  $value
+	 * @param  int     $count
+	 * @return string
+	 */
+	public function plural($value, $count = 2)
+	{
+		if ((int) $count == 1) return $value;
+
+		// First we'll check the cache of inflected values. We cache each word that
+		// is inflected so we don't have to spin through the regular expressions
+		// each time we need to inflect a given value for the developer.
+		if (isset($this->plural[$value]))
+		{
+			return $this->plural[$value];
+		}
+
+		// English words may be automatically inflected using regular expressions.
+		// If the word is english, we'll just pass off the word to the automatic
+		// inflection method and return the result, which is cached.
+		$irregular = array_flip($this->config['irregular']);
+
+		$result = $this->auto($value, $this->config['plural'], $irregular);
+
+		return $this->plural[$value] = $result;
+	}
+
+	/**
+	 * Perform auto inflection on an English word.
+	 *
+	 * @param  string  $value
+	 * @param  array   $source
+	 * @param  array   $irregular
+	 * @return string
+	 */
+	protected function auto($value, $source, $irregular)
+	{
+		// If the word hasn't been cached, we'll check the list of words that
+		// that are "uncountable". This should be a quick look up since we
+		// can just hit the array directly for the value.
+		if (in_array(strtolower($value), $this->config['uncountable']))
+		{
+			return $value;
+		}
+
+		// Next we will check the "irregular" patterns, which contains words
+		// like "children" and "teeth" which can not be inflected using the
+		// typically used regular expression matching approach.
+		foreach ($irregular as $irregular => $pattern)
+		{
+			if (preg_match($pattern = '/'.$pattern.'$/i', $value))
+			{
+				return preg_replace($pattern, $irregular, $value);
+			}
+		}
+
+		// Finally we'll spin through the array of regular expressions and
+		// and look for matches for the word. If we find a match we will
+		// cache and return the inflected value for quick look up.
+		foreach ($source as $pattern => $inflected)
+		{
+			if (preg_match($pattern, $value))
+			{
+				return preg_replace($pattern, $inflected, $value);
+			}
+		}
+	}
+
+}

laravel/str.php

@@ -2,6 +2,13 @@
 
 class Str {
 
+	/**
+	 * The pluralizer instance.
+	 *
+	 * @var Pluralizer
+	 */
+	public static $pluralizer;
+
 	/**
 	 * Get the default string encoding for the application.
 	 *
@@ -154,25 +161,17 @@ public static function words($value, $words = 100, $end = '...')
 	/**
 	 * Get the singular form of the given word.
 	 *
-	 * The word should be defined in the "strings" configuration file.
-	 *
 	 * @param  string  $value
 	 * @return string
 	 */
 	public static function singular($value)
 	{
-		$inflection = Config::get('strings.inflection');
+		return static::pluralizer()->singular($value);
-
-		$singular = array_get(array_flip($inflection), strtolower($value), $value);
-
-		return (ctype_upper($value[0])) ? static::title($singular) : $singular;
 	}
 
 	/**
 	 * Get the plural form of the given word.
 	 *
-	 * The word should be defined in the "strings" configuration file.
-	 *
 	 * <code>
 	 *		// Returns the plural form of "child"
 	 *		$plural = Str::plural('child', 10);
@@ -187,11 +186,19 @@ public static function singular($value)
 	 */
 	public static function plural($value, $count = 2)
 	{
-		if ((int) $count == 1) return $value;
+		return static::pluralizer()->plural($value, $count);
+	}
 
-		$plural = array_get(Config::get('strings.inflection'), strtolower($value), $value);
+	/**
+	 * Get the pluralizer instance.
+	 *
+	 * @return Pluralizer
+	 */
+	protected static function pluralizer()
+	{
+		$config = Config::get('strings');
 
-		return (ctype_upper($value[0])) ? static::title($plural) : $plural;
+		return static::$pluralizer ?: static::$pluralizer = new Pluralizer($config);
 	}
 
 	/**