inflector.php 13.6 KB
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461
<?php
/**
 * @package     FrameworkOnFramework
 * @subpackage  inflector
 * @copyright   Copyright (C) 2010-2016 Nicholas K. Dionysopoulos / Akeeba Ltd. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */
defined('FOF_INCLUDED') or die;

/**
 * The FOFInflector is an adaptation of the Akelos PHP Inflector which is a PHP
 * port from a Ruby on Rails project.
 */

/**
 * FOFInflector to pluralize and singularize English nouns.
 *
 * @package  FrameworkOnFramework
 * @since    1.0
 */
class FOFInflector
{
	/**
	 * Rules for pluralizing and singularizing of nouns.
	 *
	 * @var array
	 */
	protected static $_rules = array
	(
		'pluralization'   => array(
			'/move$/i'                      => 'moves',
			'/sex$/i'                       => 'sexes',
			'/child$/i'                     => 'children',
			'/children$/i'                  => 'children',
			'/man$/i'                       => 'men',
			'/men$/i'                       => 'men',
			'/foot$/i'                      => 'feet',
			'/feet$/i'                      => 'feet',
			'/person$/i'                    => 'people',
			'/people$/i'                    => 'people',
			'/taxon$/i'                     => 'taxa',
			'/taxa$/i'                      => 'taxa',
			'/(quiz)$/i'                    => '$1zes',
			'/^(ox)$/i'                     => '$1en',
			'/oxen$/i'                      => 'oxen',
			'/(m|l)ouse$/i'                 => '$1ice',
			'/(m|l)ice$/i'                  => '$1ice',
			'/(matr|vert|ind|suff)ix|ex$/i' => '$1ices',
			'/(x|ch|ss|sh)$/i'              => '$1es',
			'/([^aeiouy]|qu)y$/i'           => '$1ies',
			'/(?:([^f])fe|([lr])f)$/i'      => '$1$2ves',
			'/sis$/i'                       => 'ses',
			'/([ti]|addend)um$/i'           => '$1a',
			'/([ti]|addend)a$/i'            => '$1a',
			'/(alumn|formul)a$/i'           => '$1ae',
			'/(alumn|formul)ae$/i'          => '$1ae',
			'/(buffal|tomat|her)o$/i'       => '$1oes',
			'/(bu)s$/i'                     => '$1ses',
			'/(alias|status)$/i'            => '$1es',
			'/(octop|vir)us$/i'             => '$1i',
			'/(octop|vir)i$/i'              => '$1i',
			'/(gen)us$/i'                   => '$1era',
			'/(gen)era$/i'                  => '$1era',
			'/(ax|test)is$/i'               => '$1es',
			'/s$/i'                         => 's',
			'/$/'                           => 's',
		),
		'singularization' => array(
			'/cookies$/i'                                                      => 'cookie',
			'/moves$/i'                                                        => 'move',
			'/sexes$/i'                                                        => 'sex',
			'/children$/i'                                                     => 'child',
			'/men$/i'                                                          => 'man',
			'/feet$/i'                                                         => 'foot',
			'/people$/i'                                                       => 'person',
			'/taxa$/i'                                                         => 'taxon',
			'/databases$/i'                                                    => 'database',
      '/menus$/i'                                                        => 'menu',
			'/(quiz)zes$/i'                                                    => '\1',
			'/(matr|suff)ices$/i'                                              => '\1ix',
			'/(vert|ind|cod)ices$/i'                                           => '\1ex',
			'/^(ox)en/i'                                                       => '\1',
			'/(alias|status)es$/i'                                             => '\1',
			'/(tomato|hero|buffalo)es$/i'                                      => '\1',
			'/([octop|vir])i$/i'                                               => '\1us',
			'/(gen)era$/i'                                                     => '\1us',
			'/(cris|^ax|test)es$/i'                                            => '\1is',
			'/is$/i'                                                           => 'is',
			'/us$/i'                                                           => 'us',
			'/ias$/i'                                                          => 'ias',
			'/(shoe)s$/i'                                                      => '\1',
			'/(o)es$/i'                                                        => '\1e',
			'/(bus)es$/i'                                                      => '\1',
			'/([m|l])ice$/i'                                                   => '\1ouse',
			'/(x|ch|ss|sh)es$/i'                                               => '\1',
			'/(m)ovies$/i'                                                     => '\1ovie',
			'/(s)eries$/i'                                                     => '\1eries',
			'/(v)ies$/i'                                                       => '\1ie',
			'/([^aeiouy]|qu)ies$/i'                                            => '\1y',
			'/([lr])ves$/i'                                                    => '\1f',
			'/(tive)s$/i'                                                      => '\1',
			'/(hive)s$/i'                                                      => '\1',
			'/([^f])ves$/i'                                                    => '\1fe',
			'/(^analy)ses$/i'                                                  => '\1sis',
			'/((a)naly|(b)a|(d)iagno|(p)arenthe|(p)rogno|(s)ynop|(t)he)ses$/i' => '\1\2sis',
			'/([ti]|addend)a$/i'                                               => '\1um',
			'/(alumn|formul)ae$/i'                                             => '$1a',
			'/(n)ews$/i'                                                       => '\1ews',
			'/(.*)ss$/i'                                                       => '\1ss',
			'/(.*)s$/i'                                                        => '\1',
		),
		'countable'       => array(
			'aircraft',
			'cannon',
			'deer',
			'equipment',
			'fish',
			'information',
			'money',
			'moose',
			'rice',
			'series',
			'sheep',
			'species',
			'swine',
		)
	);

	/**
	 * Cache of pluralized and singularized nouns.
	 *
	 * @var array
	 */
	protected static $_cache = array(
		'singularized' => array(),
		'pluralized'   => array()
	);

	/**
	 * Constructor
	 *
	 * Prevent creating instances of this class by making the constructor private
	 */
	private function __construct()
	{
	}

	public static function deleteCache()
	{
		static::$_cache['pluralized'] = array();
		static::$_cache['singularized'] = array();
	}

	/**
	 * Add a word to the cache, useful to make exceptions or to add words in other languages.
	 *
	 * @param   string  $singular  word.
	 * @param   string  $plural    word.
	 *
	 * @return  void
	 */
	public static function addWord($singular, $plural)
	{
		static::$_cache['pluralized'][$singular] = $plural;
		static::$_cache['singularized'][$plural] = $singular;
	}

	/**
	 * Singular English word to plural.
	 *
	 * @param   string  $word  word to pluralize.
	 *
	 * @return  string Plural noun.
	 */
	public static function pluralize($word)
	{
		// Get the cached noun of it exists
		if (isset(static::$_cache['pluralized'][$word]))
		{
			return static::$_cache['pluralized'][$word];
		}

		// Create the plural noun
		if (in_array($word, self::$_rules['countable']))
		{
			static::$_cache['pluralized'][$word] = $word;

			return $word;
		}

		foreach (self::$_rules['pluralization'] as $regexp => $replacement)
		{
			$matches = null;
			$plural  = preg_replace($regexp, $replacement, $word, -1, $matches);

			if ($matches > 0)
			{
				static::$_cache['pluralized'][$word] = $plural;

				return $plural;
			}
		}

		static::$_cache['pluralized'][$word] = $word;

		return static::$_cache['pluralized'][$word];
	}

	/**
	 * Plural English word to singular.
	 *
	 * @param   string  $word  Word to singularize.
	 *
	 * @return  string Singular noun.
	 */
	public static function singularize($word)
	{
		// Get the cached noun of it exists
		if (isset(static::$_cache['singularized'][$word]))
		{
			return static::$_cache['singularized'][$word];
		}

		// Create the singular noun
		if (in_array($word, self::$_rules['countable']))
		{
			static::$_cache['singularized'][$word] = $word;

			return $word;
		}

		foreach (self::$_rules['singularization'] as $regexp => $replacement)
		{
			$matches  = null;
			$singular = preg_replace($regexp, $replacement, $word, -1, $matches);

			if ($matches > 0)
			{
				static::$_cache['singularized'][$word] = $singular;

				return $singular;
			}
		}

		static::$_cache['singularized'][$word] = $word;

		return static::$_cache['singularized'][$word];
	}

	/**
	 * Returns given word as CamelCased.
	 *
	 * Converts a word like "foo_bar" or "foo bar" to "FooBar". It
	 * will remove non alphanumeric characters from the word, so
	 * "who's online" will be converted to "WhoSOnline"
	 *
	 * @param   string  $word  Word to convert to camel case.
	 *
	 * @return  string  UpperCamelCasedWord
	 */
	public static function camelize($word)
	{
		$word = preg_replace('/[^a-zA-Z0-9\s]/', ' ', $word);
		$word = str_replace(' ', '', ucwords(strtolower(str_replace('_', ' ', $word))));

		return $word;
	}

	/**
	 * Converts a word "into_it_s_underscored_version"
	 *
	 * Convert any "CamelCased" or "ordinary Word" into an "underscored_word".
	 *
	 * @param   string  $word  Word to underscore
	 *
	 * @return string Underscored word
	 */
	public static function underscore($word)
	{
		$word = preg_replace('/(\s)+/', '_', $word);
		$word = strtolower(preg_replace('/(?<=\\w)([A-Z])/', '_\\1', $word));

		return $word;
	}

	/**
	 * Convert any "CamelCased" word into an array of strings
	 *
	 * Returns an array of strings each of which is a substring of string formed
	 * by splitting it at the camelcased letters.
	 *
	 * @param   string  $word  Word to explode
	 *
	 * @return  array   Array of strings
	 */
	public static function explode($word)
	{
		$result = explode('_', self::underscore($word));

		return $result;
	}

	/**
	 * Convert  an array of strings into a "CamelCased" word.
	 *
	 * @param   array  $words  Array to implode
	 *
	 * @return  string UpperCamelCasedWord
	 */
	public static function implode($words)
	{
		$result = self::camelize(implode('_', $words));

		return $result;
	}

	/**
	 * Returns a human-readable string from $word.
	 *
	 * Returns a human-readable string from $word, by replacing
	 * underscores with a space, and by upper-casing the initial
	 * character by default.
	 *
	 * @param   string  $word  String to "humanize"
	 *
	 * @return string Human-readable word
	 */
	public static function humanize($word)
	{
		$result = ucwords(strtolower(str_replace("_", " ", $word)));

		return $result;
	}

	/**
	 * Converts a class name to its table name according to Koowa
	 * naming conventions.
	 *
	 * Converts "Person" to "people"
	 *
	 * @param   string  $className  Class name for getting related table_name.
	 *
	 * @return  string  plural_table_name
	 *
	 * @see classify
	 */
	public static function tableize($className)
	{
		$result = self::underscore($className);

		if (!self::isPlural($className))
		{
			$result = self::pluralize($result);
		}

		return $result;
	}

	/**
	 * Converts a table name to its class name according to Koowa naming conventions.
	 *
	 * @param   string  $tableName  Table name for getting related ClassName.
	 *
	 * @return string SingularClassName
	 *
	 * @example  Converts "people" to "Person"
	 * @see tableize
	 */
	public static function classify($tableName)
	{
		$result = self::camelize(self::singularize($tableName));

		return $result;
	}

	/**
	 * Returns camelBacked version of a string. Same as camelize but first char is lowercased.
	 *
	 * @param   string  $string  String to be camelBacked.
	 *
	 * @return string
	 *
	 * @see camelize
	 */
	public static function variablize($string)
	{
		$string   = self::camelize(self::underscore($string));
		$result   = strtolower(substr($string, 0, 1));
		$variable = preg_replace('/\\w/', $result, $string, 1);

		return $variable;
	}

	/**
	 * Check to see if an English word is singular
	 *
	 * @param   string  $string  The word to check
	 *
	 * @return boolean
	 */
	public static function isSingular($string)
	{
		// Check cache assuming the string is plural.
		$singular = isset(static::$_cache['singularized'][$string]) ? static::$_cache['singularized'][$string] : null;
		$plural   = $singular && isset(static::$_cache['pluralized'][$singular]) ? static::$_cache['pluralized'][$singular] : null;

		if ($singular && $plural)
		{
			return $plural != $string;
		}

		// If string is not in the cache, try to pluralize and singularize it.
		return self::singularize(self::pluralize($string)) == $string;
	}

	/**
	 * Check to see if an Enlish word is plural.
	 *
	 * @param   string  $string  String to be checked.
	 *
	 * @return boolean
	 */
	public static function isPlural($string)
	{
		// Check cache assuming the string is singular.
		$plural   = isset(static::$_cache['pluralized'][$string]) ? static::$_cache['pluralized'][$string] : null;
		$singular = $plural && isset(static::$_cache['singularized'][$plural]) ? static::$_cache['singularized'][$plural] : null;

		if ($plural && $singular)
		{
			return $singular != $string;
		}

		// If string is not in the cache, try to singularize and pluralize it.
		return self::pluralize(self::singularize($string)) == $string;
	}

	/**
	 * Gets a part of a CamelCased word by index.
	 *
	 * Use a negative index to start at the last part of the word (-1 is the
	 * last part)
	 *
	 * @param   string   $string   Word
	 * @param   integer  $index    Index of the part
	 * @param   string   $default  Default value
	 *
	 * @return string
	 */
	public static function getPart($string, $index, $default = null)
	{
		$parts = self::explode($string);

		if ($index < 0)
		{
			$index = count($parts) + $index;
		}

		return isset($parts[$index]) ? $parts[$index] : $default;
	}
}