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<?php namespace Illuminate\Support;
class Pluralizer {
/**
* Plural word form rules.
*
* @var array
*/
public static $plural = array(
'/(quiz)$/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",
);
/**
* Singular word form rules.
*
* @var array
*/
public static $singular = array(
'/(quiz)zes$/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 word forms.
*
* @var array
*/
public static $irregular = array(
'child' => 'children',
'foot' => 'feet',
'freshman' => 'freshmen',
'goose' => 'geese',
'human' => 'humans',
'man' => 'men',
'move' => 'moves',
'person' => 'people',
'sex' => 'sexes',
'tooth' => 'teeth',
);
/**
* Uncountable word forms.
*
* @var array
*/
public static $uncountable = array(
'audio',
'equipment',
'deer',
'fish',
'gold',
'information',
'money',
'rice',
'police',
'series',
'sheep',
'species',
'moose',
'chassis',
'traffic',
'coreopsis',
);
/**
* The cached copies of the plural inflections.
*
* @var array
*/
protected static $pluralCache = array();
/**
* The cached copies of the singular inflections.
*
* @var array
*/
protected static $singularCache = array();
/**
* Get the singular form of the given word.
*
* @param string $value
* @return string
*/
public static function singular($value)
{
if (isset(static::$singularCache[$value]))
{
return static::$singularCache[$value];
}
$result = static::inflect($value, static::$singular, static::$irregular);
return static::$singularCache[$value] = $result ?: $value;
}
/**
* Get the plural form of the given word.
*
* @param string $value
* @param int $count
* @return string
*/
public static function plural($value, $count = 2)
{
if ($count == 1) return $value;
// First we'll check the cache of inflected values. We cache each word that
// is inflected so we don't have to spin through the regular expressions
// on each subsequent method calls for this word by the app developer.
if (isset(static::$pluralCache[$value]))
{
return static::$pluralCache[$value];
}
$irregular = array_flip(static::$irregular);
// When doing the singular to plural transformation, we'll flip the irregular
// array since we need to swap sides on the keys and values. After we have
// the transformed value we will cache it in memory for faster look-ups.
$plural = static::$plural;
$result = static::inflect($value, $plural, $irregular);
return static::$pluralCache[$value] = $result;
}
/**
* Perform auto inflection on an English word.
*
* @param string $value
* @param array $source
* @param array $irregular
* @return string
*/
protected static function inflect($value, $source, $irregular)
{
if (static::uncountable($value)) return $value;
// Next, we will check the "irregular" patterns which contain words that are
// not easily summarized in regular expression rules, like "children" and
// "teeth", both of which cannot get inflected using our typical rules.
foreach ($irregular as $irregular => $pattern)
{
if (preg_match($pattern = '/'.$pattern.'$/i', $value))
{
$irregular = static::matchCase($irregular, $value);
return preg_replace($pattern, $irregular, $value);
}
}
// Finally, we'll spin through the array of regular expressions and look for
// matches for the word. If we find a match, we will cache and return the
// transformed value so we will quickly look it up on subsequent calls.
foreach ($source as $pattern => $inflected)
{
if (preg_match($pattern, $value))
{
$inflected = preg_replace($pattern, $inflected, $value);
return static::matchCase($inflected, $value);
}
}
}
/**
* Determine if the given value is uncountable.
*
* @param string $value
* @return bool
*/
protected static function uncountable($value)
{
return in_array(strtolower($value), static::$uncountable);
}
/**
* Attempt to match the case on two strings.
*
* @param string $value
* @param string $comparison
* @return string
*/
protected static function matchCase($value, $comparison)
{
$functions = array('mb_strtolower', 'mb_strtoupper', 'ucfirst', 'ucwords');
foreach ($functions as $function)
{
if (call_user_func($function, $comparison) === $comparison)
{
return call_user_func($function, $value);
}
}
return $value;
}
}
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