bytic / inflector

src/Traits/InflectionSingularizeTrait.php

<?php

namespace Nip\Inflector\Traits;

/**
 * Trait InflectionSingularizeTrait
 * @package Nip\Inflector\Traits
 *
 * @method singularize($string)
 */
trait InflectionSingularizeTrait
{

    protected $singular = [
        'rules' => [
            '/(s)tatuses$/i' => '\1\2tatus',
            '/^(.*)(menu)s$/i' => '\1\2',
            '/(quiz)zes$/i' => '\\1',
            '/(matr)ices$/i' => '\1ix',
            '/(vert|ind)ices$/i' => '\1ex',
            '/^(ox)en/i' => '\1',
            '/(alias)(es)*$/i' => '\1',
            '/(alumn|bacill|cact|foc|fung|nucle|radi|stimul|syllab|termin|viri?)i$/i' => '\1us',
            '/([ftw]ax)es/i' => '\1',
            '/(cris|ax|test)es$/i' => '\1is',
            '/(shoe)s$/i' => '\1',
            '/(o)es$/i' => '\1',
            '/ouses$/' => 'ouse',
            '/([^a])uses$/' => '\1us',
            '/([m|l])ice$/i' => '\1ouse',
            '/(x|ch|ss|sh)es$/i' => '\1',
            '/(m)ovies$/i' => '\1\2ovie',
            '/(s)eries$/i' => '\1\2eries',
            '/([^aeiouy]|qu)ies$/i' => '\1y',
            '/(tive)s$/i' => '\1',
            '/(hive)s$/i' => '\1',
            '/(drive)s$/i' => '\1',
            '/([le])ves$/i' => '\1f',
            '/([^rfoa])ves$/i' => '\1fe',
            '/(^analy)ses$/i' => '\1sis',
            '/(analy|diagno|^ba|(p)arenthe|(p)rogno|(s)ynop|(t)he)ses$/i' => '\1\2sis',
            '/([ti])a$/i' => '\1um',
            '/(p)eople$/i' => '\1\2erson',
            '/(m)en$/i' => '\1an',
            '/(c)hildren$/i' => '\1\2hild',
            '/(n)ews$/i' => '\1\2ews',
            '/eaus$/' => 'eau',
            '/^(.*us)$/' => '\\1',
            '/s$/i' => ''
        ],
        'uncountable' => [
            '.*[nrlm]ese',
            '.*data',
            '.*deer',
            '.*fish',
            '.*measles',
            '.*ois',
            '.*pox',
            '.*sheep',
            'people',
            'feedback',
            'stadia',
            '.*?media',
            'chassis',
            'clippers',
            'debris',
            'diabetes',
            'equipment',
            'gallows',
            'graffiti',
            'headquarters',
            'information',
            'innings',
            'news',
            'nexus',
            'pokemon',
            'proceedings',
            'research',
            'sea[- ]bass',
            'series',
            'species',
            'weather'
        ],
        'irregular' => [
            'atlas' => 'atlases',
            'beef' => 'beefs',
            'brief' => 'briefs',
            'brother' => 'brothers',
            'cafe' => 'cafes',
            'child' => 'children',
            'cookie' => 'cookies',
            'corpus' => 'corpuses',
            'cow' => 'cows',
            'criterion' => 'criteria',
            'ganglion' => 'ganglions',
            'genie' => 'genies',
            'genus' => 'genera',
            'graffito' => 'graffiti',
            'hoof' => 'hoofs',
            'loaf' => 'loaves',
            'man' => 'men',
            'money' => 'monies',
            'mongoose' => 'mongooses',
            'move' => 'moves',
            'mythos' => 'mythoi',
            'niche' => 'niches',
            'numen' => 'numina',
            'occiput' => 'occiputs',
            'octopus' => 'octopuses',
            'opus' => 'opuses',
            'ox' => 'oxen',
            'penis' => 'penises',
            'person' => 'people',
            'sex' => 'sexes',
            'soliloquy' => 'soliloquies',
            'testis' => 'testes',
            'trilby' => 'trilbys',
            'turf' => 'turfs',
            'potato' => 'potatoes',
            'hero' => 'heroes',
            'tooth' => 'teeth',
            'goose' => 'geese',
            'foot' => 'feet',
            'foe' => 'foes',
            'sieve' => 'sieves'
        ]
    ];

    /**
     * @param $word
     * @return mixed
     */
    protected function doSingularize($word)
    {
        $lowercased_word = strtolower($word);
        foreach ($this->singular['uncountable'] as $_uncountable) {
            if (substr($lowercased_word, (-1 * strlen($_uncountable))) == $_uncountable) {
                return $word;
            }
        }

        foreach ($this->singular['irregular'] as $_plural => $_singular) {

This code seems to be duplicated across your project.

            if (preg_match('/(' . $_singular . ')$/i', $word, $arr)) {
                return preg_replace('/(' . $_singular . ')$/i', substr($arr[0], 0, 1) . substr($_plural, 1), $word);
            }
        }

        foreach ($this->singular['rules'] as $rule => $replacement) {
            if (preg_match($rule, $word)) {
                return preg_replace($rule, $replacement, $word);
            }
        }

        return $word;
    }
}