name : EnglishInflector.php <?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\String\Inflector; final class EnglishInflector implements InflectorInterface { /** * Map English plural to singular suffixes. * * @see http://english-zone.com/spelling/plurals.html */ private const PLURAL_MAP = [ // First entry: plural suffix, reversed // Second entry: length of plural suffix // Third entry: Whether the suffix may succeed a vowel // Fourth entry: Whether the suffix may succeed a consonant // Fifth entry: singular suffix, normal // bacteria (bacterium) ['airetcab', 8, true, true, 'bacterium'], // corpora (corpus) ['aroproc', 7, true, true, 'corpus'], // criteria (criterion) ['airetirc', 8, true, true, 'criterion'], // curricula (curriculum) ['alucirruc', 9, true, true, 'curriculum'], // genera (genus) ['areneg', 6, true, true, 'genus'], // media (medium) ['aidem', 5, true, true, 'medium'], // memoranda (memorandum) ['adnaromem', 9, true, true, 'memorandum'], // phenomena (phenomenon) ['anemonehp', 9, true, true, 'phenomenon'], // strata (stratum) ['atarts', 6, true, true, 'stratum'], // nebulae (nebula) ['ea', 2, true, true, 'a'], // services (service) ['secivres', 8, true, true, 'service'], // mice (mouse), lice (louse) ['eci', 3, false, true, 'ouse'], // geese (goose) ['esee', 4, false, true, 'oose'], // fungi (fungus), alumni (alumnus), syllabi (syllabus), radii (radius) ['i', 1, true, true, 'us'], // men (man), women (woman) ['nem', 3, true, true, 'man'], // children (child) ['nerdlihc', 8, true, true, 'child'], // oxen (ox) ['nexo', 4, false, false, 'ox'], // indices (index), appendices (appendix), prices (price) ['seci', 4, false, true, ['ex', 'ix', 'ice']], // codes (code) ['sedoc', 5, false, true, 'code'], // selfies (selfie) ['seifles', 7, true, true, 'selfie'], // zombies (zombie) ['seibmoz', 7, true, true, 'zombie'], // movies (movie) ['seivom', 6, true, true, 'movie'], // names (name) ['seman', 5, true, false, 'name'], // conspectuses (conspectus), prospectuses (prospectus) ['sesutcep', 8, true, true, 'pectus'], // feet (foot) ['teef', 4, true, true, 'foot'], // geese (goose) ['eseeg', 5, true, true, 'goose'], // teeth (tooth) ['hteet', 5, true, true, 'tooth'], // news (news) ['swen', 4, true, true, 'news'], // series (series) ['seires', 6, true, true, 'series'], // babies (baby) ['sei', 3, false, true, 'y'], // accesses (access), addresses (address), kisses (kiss) ['sess', 4, true, false, 'ss'], // statuses (status) ['sesutats', 8, true, true, 'status'], // analyses (analysis), ellipses (ellipsis), fungi (fungus), // neuroses (neurosis), theses (thesis), emphases (emphasis), // oases (oasis), crises (crisis), houses (house), bases (base), // atlases (atlas) ['ses', 3, true, true, ['s', 'se', 'sis']], // objectives (objective), alternative (alternatives) ['sevit', 5, true, true, 'tive'], // drives (drive) ['sevird', 6, false, true, 'drive'], // lives (life), wives (wife) ['sevi', 4, false, true, 'ife'], // moves (move) ['sevom', 5, true, true, 'move'], // hooves (hoof), dwarves (dwarf), elves (elf), leaves (leaf), caves (cave), staves (staff) ['sev', 3, true, true, ['f', 've', 'ff']], // axes (axis), axes (ax), axes (axe) ['sexa', 4, false, false, ['ax', 'axe', 'axis']], // indexes (index), matrixes (matrix) ['sex', 3, true, false, 'x'], // quizzes (quiz) ['sezz', 4, true, false, 'z'], // bureaus (bureau) ['suae', 4, false, true, 'eau'], // fees (fee), trees (tree), employees (employee) ['see', 3, true, true, 'ee'], // edges (edge) ['segd', 4, true, true, 'dge'], // roses (rose), garages (garage), cassettes (cassette), // waltzes (waltz), heroes (hero), bushes (bush), arches (arch), // shoes (shoe) ['se', 2, true, true, ['', 'e']], // status (status) ['sutats', 6, true, true, 'status'], // tags (tag) ['s', 1, true, true, ''], // chateaux (chateau) ['xuae', 4, false, true, 'eau'], // people (person) ['elpoep', 6, true, true, 'person'], ]; /** * Map English singular to plural suffixes. * * @see http://english-zone.com/spelling/plurals.html */ private const SINGULAR_MAP = [ // First entry: singular suffix, reversed // Second entry: length of singular suffix // Third entry: Whether the suffix may succeed a vowel // Fourth entry: Whether the suffix may succeed a consonant // Fifth entry: plural suffix, normal // axes (axis) ['sixa', 4, false, false, 'axes'], // criterion (criteria) ['airetirc', 8, false, false, 'criterion'], // nebulae (nebula) ['aluben', 6, false, false, 'nebulae'], // children (child) ['dlihc', 5, true, true, 'children'], // prices (price) ['eci', 3, false, true, 'ices'], // services (service) ['ecivres', 7, true, true, 'services'], // lives (life), wives (wife) ['efi', 3, false, true, 'ives'], // selfies (selfie) ['eifles', 6, true, true, 'selfies'], // movies (movie) ['eivom', 5, true, true, 'movies'], // lice (louse) ['esuol', 5, false, true, 'lice'], // mice (mouse) ['esuom', 5, false, true, 'mice'], // geese (goose) ['esoo', 4, false, true, 'eese'], // houses (house), bases (base) ['es', 2, true, true, 'ses'], // geese (goose) ['esoog', 5, true, true, 'geese'], // caves (cave) ['ev', 2, true, true, 'ves'], // drives (drive) ['evird', 5, false, true, 'drives'], // objectives (objective), alternative (alternatives) ['evit', 4, true, true, 'tives'], // moves (move) ['evom', 4, true, true, 'moves'], // staves (staff) ['ffats', 5, true, true, 'staves'], // hooves (hoof), dwarves (dwarf), elves (elf), leaves (leaf) ['ff', 2, true, true, 'ffs'], // hooves (hoof), dwarves (dwarf), elves (elf), leaves (leaf) ['f', 1, true, true, ['fs', 'ves']], // arches (arch) ['hc', 2, true, true, 'ches'], // bushes (bush) ['hs', 2, true, true, 'shes'], // teeth (tooth) ['htoot', 5, true, true, 'teeth'], // albums (album) ['mubla', 5, true, true, 'albums'], // bacteria (bacterium), curricula (curriculum), media (medium), memoranda (memorandum), phenomena (phenomenon), strata (stratum) ['mu', 2, true, true, 'a'], // men (man), women (woman) ['nam', 3, true, true, 'men'], // people (person) ['nosrep', 6, true, true, ['persons', 'people']], // criteria (criterion) ['noiretirc', 9, true, true, 'criteria'], // phenomena (phenomenon) ['nonemonehp', 10, true, true, 'phenomena'], // echoes (echo) ['ohce', 4, true, true, 'echoes'], // heroes (hero) ['oreh', 4, true, true, 'heroes'], // atlases (atlas) ['salta', 5, true, true, 'atlases'], // aliases (alias) ['saila', 5, true, true, 'aliases'], // irises (iris) ['siri', 4, true, true, 'irises'], // analyses (analysis), ellipses (ellipsis), neuroses (neurosis) // theses (thesis), emphases (emphasis), oases (oasis), // crises (crisis) ['sis', 3, true, true, 'ses'], // accesses (access), addresses (address), kisses (kiss) ['ss', 2, true, false, 'sses'], // syllabi (syllabus) ['suballys', 8, true, true, 'syllabi'], // buses (bus) ['sub', 3, true, true, 'buses'], // circuses (circus) ['suc', 3, true, true, 'cuses'], // hippocampi (hippocampus) ['supmacoppih', 11, false, false, 'hippocampi'], // campuses (campus) ['sup', 3, true, true, 'puses'], // status (status) ['sutats', 6, true, true, ['status', 'statuses']], // conspectuses (conspectus), prospectuses (prospectus) ['sutcep', 6, true, true, 'pectuses'], // fungi (fungus), alumni (alumnus), syllabi (syllabus), radii (radius) ['su', 2, true, true, 'i'], // news (news) ['swen', 4, true, true, 'news'], // feet (foot) ['toof', 4, true, true, 'feet'], // chateaux (chateau), bureaus (bureau) ['uae', 3, false, true, ['eaus', 'eaux']], // oxen (ox) ['xo', 2, false, false, 'oxen'], // hoaxes (hoax) ['xaoh', 4, true, false, 'hoaxes'], // indices (index) ['xedni', 5, false, true, ['indicies', 'indexes']], // boxes (box) ['xo', 2, false, true, 'oxes'], // indexes (index), matrixes (matrix) ['x', 1, true, false, ['cies', 'xes']], // appendices (appendix) ['xi', 2, false, true, 'ices'], // babies (baby) ['y', 1, false, true, 'ies'], // quizzes (quiz) ['ziuq', 4, true, false, 'quizzes'], // waltzes (waltz) ['z', 1, true, true, 'zes'], ]; /** * A list of words which should not be inflected, reversed. */ private const UNINFLECTED = [ '', // data 'atad', // deer 'reed', // equipment 'tnempiuqe', // feedback 'kcabdeef', // fish 'hsif', // health 'htlaeh', // history 'yrotsih', // info 'ofni', // information 'noitamrofni', // money 'yenom', // moose 'esoom', // series 'seires', // sheep 'peehs', // species 'seiceps', // traffic 'ciffart', // aircraft 'tfarcria', // hardware 'erawdrah', ]; public function singularize(string $plural): array { $pluralRev = strrev($plural); $lowerPluralRev = strtolower($pluralRev); $pluralLength = \strlen($lowerPluralRev); // Check if the word is one which is not inflected, return early if so if (\in_array($lowerPluralRev, self::UNINFLECTED, true)) { return [$plural]; } // The outer loop iterates over the entries of the plural table // The inner loop $j iterates over the characters of the plural suffix // in the plural table to compare them with the characters of the actual // given plural suffix foreach (self::PLURAL_MAP as $map) { $suffix = $map[0]; $suffixLength = $map[1]; $j = 0; // Compare characters in the plural table and of the suffix of the // given plural one by one while ($suffix[$j] === $lowerPluralRev[$j]) { // Let $j point to the next character ++$j; // Successfully compared the last character // Add an entry with the singular suffix to the singular array if ($j === $suffixLength) { // Is there any character preceding the suffix in the plural string? if ($j < $pluralLength) { $nextIsVowel = str_contains('aeiou', $lowerPluralRev[$j]); if (!$map[2] && $nextIsVowel) { // suffix may not succeed a vowel but next char is one break; } if (!$map[3] && !$nextIsVowel) { // suffix may not succeed a consonant but next char is one break; } } $newBase = substr($plural, 0, $pluralLength - $suffixLength); $newSuffix = $map[4]; // Check whether the first character in the plural suffix // is uppercased. If yes, uppercase the first character in // the singular suffix too $firstUpper = ctype_upper($pluralRev[$j - 1]); if (\is_array($newSuffix)) { $singulars = []; foreach ($newSuffix as $newSuffixEntry) { $singulars[] = $newBase.($firstUpper ? ucfirst($newSuffixEntry) : $newSuffixEntry); } return $singulars; } return [$newBase.($firstUpper ? ucfirst($newSuffix) : $newSuffix)]; } // Suffix is longer than word if ($j === $pluralLength) { break; } } } // Assume that plural and singular is identical return [$plural]; } public function pluralize(string $singular): array { $singularRev = strrev($singular); $lowerSingularRev = strtolower($singularRev); $singularLength = \strlen($lowerSingularRev); // Check if the word is one which is not inflected, return early if so if (\in_array($lowerSingularRev, self::UNINFLECTED, true)) { return [$singular]; } // The outer loop iterates over the entries of the singular table // The inner loop $j iterates over the characters of the singular suffix // in the singular table to compare them with the characters of the actual // given singular suffix foreach (self::SINGULAR_MAP as $map) { $suffix = $map[0]; $suffixLength = $map[1]; $j = 0; // Compare characters in the singular table and of the suffix of the // given plural one by one while ($suffix[$j] === $lowerSingularRev[$j]) { // Let $j point to the next character ++$j; // Successfully compared the last character // Add an entry with the plural suffix to the plural array if ($j === $suffixLength) { // Is there any character preceding the suffix in the plural string? if ($j < $singularLength) { $nextIsVowel = str_contains('aeiou', $lowerSingularRev[$j]); if (!$map[2] && $nextIsVowel) { // suffix may not succeed a vowel but next char is one break; } if (!$map[3] && !$nextIsVowel) { // suffix may not succeed a consonant but next char is one break; } } $newBase = substr($singular, 0, $singularLength - $suffixLength); $newSuffix = $map[4]; // Check whether the first character in the singular suffix // is uppercased. If yes, uppercase the first character in // the singular suffix too $firstUpper = ctype_upper($singularRev[$j - 1]); if (\is_array($newSuffix)) { $plurals = []; foreach ($newSuffix as $newSuffixEntry) { $plurals[] = $newBase.($firstUpper ? ucfirst($newSuffixEntry) : $newSuffixEntry); } return $plurals; } return [$newBase.($firstUpper ? ucfirst($newSuffix) : $newSuffix)]; } // Suffix is longer than word if ($j === $singularLength) { break; } } } // Assume that plural is singular with a trailing `s` return [$singular.'s']; } }