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Commit 06920a7

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mbabkermbabker
committed
Support pluralization in the inflector
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‎src/Symfony/Component/Inflector/Inflector.php

Copy file name to clipboardExpand all lines: src/Symfony/Component/Inflector/Inflector.php
+268-3Lines changed: 268 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -82,9 +82,6 @@ final class Inflector
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// news (news)
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array('swen', 4, true, true, 'news'),
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85-
// series (series)
86-
array('seires', 6, true, true, 'series'),
87-
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// babies (baby)
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array('sei', 3, false, true, 'y'),
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@@ -139,6 +136,179 @@ final class Inflector
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array('elpoep', 6, true, true, 'person'),
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);
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/**
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* Map English singular to plural suffixes.
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*
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* @var array
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*
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* @see http://english-zone.com/spelling/plurals.html
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*/
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private static $singularMap = array(
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// First entry: singular suffix, reversed
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// Second entry: length of singular suffix
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// Third entry: Whether the suffix may succeed a vocal
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// Fourth entry: Whether the suffix may succeed a consonant
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// Fifth entry: plural suffix, normal
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// criterion (criteria)
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array('airetirc', 8, false, false, 'criterion'),
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// nebulae (nebula)
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array('aluben', 6, false, false, 'nebulae'),
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// children (child)
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array('dlihc', 5, true, true, 'children'),
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// prices (price)
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array('eci', 3, false, true, 'ices'),
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// services (service)
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array('ecivres', 7, true, true, 'services'),
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// lives (life), wives (wife)
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array('efi', 3, false, true, 'ives'),
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// selfies (selfie)
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array('eifles', 6, true, true, 'selfies'),
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// movies (movie)
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array('eivom', 5, true, true, 'movies'),
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// lice (louse)
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array('esuol', 5, false, true, 'lice'),
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// mice (mouse)
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array('esuom', 5, false, true, 'mice'),
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// geese (goose)
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array('esoo', 4, false, true, 'eese'),
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// houses (house), bases (base)
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array('es', 2, true, true, 'ses'),
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// geese (goose)
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array('esoog', 5, true, true, 'geese'),
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// caves (cave)
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array('ev', 2, true, true, 'ves'),
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// drives (drive)
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array('evird', 5, false, true, 'drives'),
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// objectives (objective), alternative (alternatives)
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array('evit', 4, true, true, 'tives'),
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// moves (move)
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array('evom', 4, true, true, 'moves'),
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// staves (staff)
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array('ffats', 5, true, true, 'staves'),
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// hooves (hoof), dwarves (dwarf), elves (elf), leaves (leaf)
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array('ff', 2, true, true, 'ffs'),
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// hooves (hoof), dwarves (dwarf), elves (elf), leaves (leaf)
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array('f', 1, true, true, array('fs', 'ves')),
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// arches (arch)
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array('hc', 2, true, true, 'ches'),
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// bushes (bush)
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array('hs', 2, true, true, 'shes'),
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// teeth (tooth)
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array('htoot', 5, true, true, 'teeth'),
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// bacteria (bacterium), criteria (criterion), phenomena (phenomenon)
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array('mu', 2, true, true, 'a'),
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// echoes (echo)
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array('ohce', 4, true, true, 'echoes'),
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// men (man), women (woman)
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array('nam', 3, true, true, 'men'),
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// people (person)
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array('nosrep', 6, true, true, array('persons', 'people')),
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// bacteria (bacterium), criteria (criterion), phenomena (phenomenon)
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array('noi', 3, true, true, 'ions'),
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// bacteria (bacterium), criteria (criterion), phenomena (phenomenon)
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array('no', 2, true, true, 'a'),
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// atlases (atlas)
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array('salta', 5, true, true, 'atlases'),
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// irises (iris)
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array('siri', 4, true, true, 'irises'),
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// analyses (analysis), ellipses (ellipsis), neuroses (neurosis)
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// theses (thesis), emphases (emphasis), oases (oasis),
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// crises (crisis)
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array('sis', 3, true, true, 'ses'),
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// accesses (access), addresses (address), kisses (kiss)
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array('ss', 2, true, false, 'sses'),
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// syllabi (syllabus)
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array('suballys', 8, true, true, 'syllabi'),
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// buses (bus)
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array('sub', 3, true, true, 'buses'),
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// fungi (fungus), alumni (alumnus), syllabi (syllabus), radii (radius)
261+
array('su', 2, true, true, 'i'),
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// news (news)
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array('swen', 4, true, true, 'news'),
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// feet (foot)
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array('toof', 4, true, true, 'feet'),
268+
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// chateaux (chateau), bureaus (bureau)
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array('uae', 3, false, true, array('eaus', 'eaux')),
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// oxen (ox)
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array('xo', 2, false, false, 'oxen'),
274+
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// hoaxes (hoax)
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array('xaoh', 4, true, false, 'hoaxes'),
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278+
// indices (index)
279+
array('xedni', 5, false, true, array('indicies', 'indexes')),
280+
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// indexes (index), matrixes (matrix)
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array('x', 1, true, false, array('cies', 'xes')),
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// appendices (appendix)
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array('xi', 2, false, true, 'ices'),
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// babies (baby)
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array('y', 1, false, true, 'ies'),
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// quizzes (quiz)
291+
array('ziuq', 4, true, false, 'quizzes'),
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// waltzes (waltz)
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array('z', 1, true, false, 'zes'),
295+
);
296+
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/**
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* A list of words which should not be inflected
299+
*
300+
* @var array
301+
*/
302+
private static $uninflected = array(
303+
'data',
304+
'deer',
305+
'feedback',
306+
'fish',
307+
'moose',
308+
'series',
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'sheep',
310+
);
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142312
/**
143313
* This class should not be instantiated.
144314
*/
@@ -165,6 +335,11 @@ public static function singularize(string $plural)
165335
$lowerPluralRev = strtolower($pluralRev);
166336
$pluralLength = strlen($lowerPluralRev);
167337

338+
// Check if the word is one which is not inflected, return early if so
339+
if (in_array(strtolower($plural), self::$uninflected, true)) {
340+
return $plural;
341+
}
342+
168343
// The outer loop iterates over the entries of the plural table
169344
// The inner loop $j iterates over the characters of the plural suffix
170345
// in the plural table to compare them with the characters of the actual
@@ -229,4 +404,94 @@ public static function singularize(string $plural)
229404
// Assume that plural and singular is identical
230405
return $plural;
231406
}
407+
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/**
409+
* Returns the plural form of a word.
410+
*
411+
* If the method can't determine the form with certainty, an array of the
412+
* possible plurals is returned.
413+
*
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* @param string $singular A word in plural form
415+
*
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* @return string|array The plural form or an array of possible plural
417+
* forms
418+
*
419+
* @internal
420+
*/
421+
public static function pluralize(string $singular)
422+
{
423+
$singularRev = strrev($singular);
424+
$lowerSingularRev = strtolower($singularRev);
425+
$singularLength = strlen($lowerSingularRev);
426+
427+
// Check if the word is one which is not inflected, return early if so
428+
if (in_array(strtolower($singular), self::$uninflected, true)) {
429+
return $singular;
430+
}
431+
432+
// The outer loop iterates over the entries of the singular table
433+
// The inner loop $j iterates over the characters of the singular suffix
434+
// in the singular table to compare them with the characters of the actual
435+
// given singular suffix
436+
foreach (self::$singularMap as $map) {
437+
$suffix = $map[0];
438+
$suffixLength = $map[1];
439+
$j = 0;
440+
441+
// Compare characters in the singular table and of the suffix of the
442+
// given plural one by one
443+
444+
while ($suffix[$j] === $lowerSingularRev[$j]) {
445+
// Let $j point to the next character
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++$j;
447+
448+
// Successfully compared the last character
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// Add an entry with the plural suffix to the plural array
450+
if ($j === $suffixLength) {
451+
// Is there any character preceding the suffix in the plural string?
452+
if ($j < $singularLength) {
453+
$nextIsVocal = false !== strpos('aeiou', $lowerSingularRev[$j]);
454+
455+
if (!$map[2] && $nextIsVocal) {
456+
// suffix may not succeed a vocal but next char is one
457+
break;
458+
}
459+
460+
if (!$map[3] && !$nextIsVocal) {
461+
// suffix may not succeed a consonant but next char is one
462+
break;
463+
}
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}
465+
466+
$newBase = substr($singular, 0, $singularLength - $suffixLength);
467+
$newSuffix = $map[4];
468+
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// Check whether the first character in the singular suffix
470+
// is uppercased. If yes, uppercase the first character in
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// the singular suffix too
472+
$firstUpper = ctype_upper($singularRev[$j - 1]);
473+
474+
if (is_array($newSuffix)) {
475+
$plurals = array();
476+
477+
foreach ($newSuffix as $newSuffixEntry) {
478+
$plurals[] = $newBase.($firstUpper ? ucfirst($newSuffixEntry) : $newSuffixEntry);
479+
}
480+
481+
return $plurals;
482+
}
483+
484+
return $newBase.($firstUpper ? ucfirst($newSuffix) : $newSuffix);
485+
}
486+
487+
// Suffix is longer than word
488+
if ($j === $singularLength) {
489+
break;
490+
}
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}
492+
}
493+
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// Assume that plural is singular with a trailing `s`
495+
return $singular.'s';
496+
}
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}

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