From 32dfd436d0b1682a62fdd0ee4eb789925e513575 Mon Sep 17 00:00:00 2001
From: Hugo ter Doest <hwl.ter.doest@gmail.com>
Date: Thu, 25 Mar 2021 09:52:32 +0100
Subject: [PATCH] Added some cases to the noun inflector (issue #500) (#593)

* Added some cases to the noun inflector (issue #500)

* Some spaces in comments

* Whitespace
---
 lib/natural/inflectors/noun_inflector.js |  50 ++
 package-lock.json                        | 846 ++---------------------
 spec/noun_inflector_spec.js              |  63 ++
 3 files changed, 156 insertions(+), 803 deletions(-)

diff --git a/lib/natural/inflectors/noun_inflector.js b/lib/natural/inflectors/noun_inflector.js
index 7b38c13b7..1b01e49cb 100644
--- a/lib/natural/inflectors/noun_inflector.js
+++ b/lib/natural/inflectors/noun_inflector.js
@@ -87,6 +87,56 @@ const NounInflector = function () {
   this.pluralForms.regularForms.push([/^(?!talis|.*hu)(.*)man$/i, '$1men'])
   this.pluralForms.regularForms.push([/(.*)/i, '$1s'])
 
+  // Words ending in -ff or -ffe you just add s to make the plural.
+  // Sheriffs | Giraffes
+  // this.pluralForms.regularForms.push([/(.+ffe?)$/i, '$1s'])
+
+  // words ending in f that just add s:
+  // roof - roofs
+  // chief - chiefs
+  // oaf -oafs
+  // this.pluralForms.regularForms.push([/([^f]+f)$/i, '$1s'])
+
+  // Example of words using the -f / -fe to -ves rule
+  // leaf - leaves
+  // wolf - wolves
+  // calf - calves
+  // half - halves
+  // knife - knives
+  // loaf - loaves
+  // life - lives
+  // wife - wives
+  // shelf - shelves
+  // thief - thieves
+  // yourself - yourselves
+  this.addIrregular('leaf', 'leaves')
+  this.addIrregular('wolf', 'wolves')
+  this.addIrregular('calf', 'calves')
+  this.addIrregular('half', 'halves')
+  this.addIrregular('knife', 'knives')
+  this.addIrregular('loaf', 'loaves')
+  this.addIrregular('life', 'lives')
+  this.addIrregular('wife', 'wives')
+  this.addIrregular('shelf', 'shelves')
+  this.addIrregular('thief', 'thieves')
+  this.addIrregular('yourself', 'yourselves')
+
+  // Some words have multiple valid plural forms endings with -ves or -s:
+  // scarf - scarfs/scarves
+  // dwarf - dwarfs / dwarves
+  // wharf - wharfs / wharves
+  // handkerchief - handkerchiefs / handkerchieves
+  // this.pluralForms.regularForms.push([/(.*r)f/i, '$1ves'])
+
+  // Singular inflections
+
+  // Some words have multiple valid plural forms endings with -ves or -s:
+  // scarf - scarfs/scarves
+  // dwarf - dwarfs / dwarves
+  // wharf - wharfs / wharves
+  // handkerchief - handkerchiefs / handkerchieves
+  this.singularForms.regularForms.push([/(.*)ves$/i, '$1f'])
+
   this.singularForms.regularForms.push([/([^v])ies$/i, '$1y'])
   this.singularForms.regularForms.push([/ives$/i, 'ife'])
   this.singularForms.regularForms.push([/(antenn|formul|nebul|vertebr|vit)ae$/i, '$1a'])
diff --git a/package-lock.json b/package-lock.json
index 87702c53a..46c2a8186 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -552,86 +552,6 @@
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-      "integrity": "sha512-xH2e58elpj1X4ynnKp9qSnWlsRTIs6n3tgLGNfwAGHwePw0mulHQllV34n0T25uYSu1k0hRKkWXF890B1yS47w==",
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@@ -844,21 +764,6 @@
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@@ -912,16 +817,6 @@
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@@ -1250,11 +1140,6 @@
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+      "dev": true,
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@@ -1284,26 +1170,11 @@
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+          "integrity": "sha512-MguG95oij0fC3QV3URf4V2SDYGJhJnJGqvIIgdECeODCT98wSWDAJ94SSuVpYQUoTcGUIL6L4yNB7j1DFFHSBg==",
+          "dev": true
         }
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-    "babel-types": {
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@@ -1643,7 +1494,8 @@
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+      "integrity": "sha512-zauLjrfCG+xvoyaqLoV8bLVXXNGC4JqlxFCutSDWA6fJrTo2ZuvLYTqZ7aHBLZSMOopbzwv8f+wZcVzfVTI2Dg==",
+      "dev": true
     },
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@@ -1766,15 +1618,6 @@
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@@ -1826,14 +1669,6 @@
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       "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.3.tgz",
-      "integrity": "sha512-VUJ49FC8U1OxwZLxIbTTrDvLnf/6TDgxZcK8wxR8zs13xpx7xbG60ndBlhNrFi2EMuFRoeDoJO7wthSLq42EjA=="
+      "integrity": "sha512-VUJ49FC8U1OxwZLxIbTTrDvLnf/6TDgxZcK8wxR8zs13xpx7xbG60ndBlhNrFi2EMuFRoeDoJO7wthSLq42EjA==",
+      "dev": true
     },
     "sinon": {
       "version": "1.17.7",
@@ -8755,7 +8108,8 @@
     "source-map": {
       "version": "0.5.7",
       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
-      "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w="
+      "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=",
+      "dev": true
     },
     "source-map-resolve": {
       "version": "0.5.2",
@@ -8811,11 +8165,6 @@
         }
       }
     },
-    "spark-md5": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/spark-md5/-/spark-md5-3.0.1.tgz",
-      "integrity": "sha512-0tF3AGSD1ppQeuffsLDIOWlKUd3lS92tFxcsrh5Pe3ZphhnoK+oXIBTzOAThZCiuINZLvpiLH/1VS1/ANEJVig=="
-    },
     "sparkles": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/sparkles/-/sparkles-1.0.1.tgz",
@@ -9123,11 +8472,6 @@
         "is-utf8": "^0.2.0"
       }
     },
-    "strip-final-newline": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/strip-final-newline/-/strip-final-newline-2.0.0.tgz",
-      "integrity": "sha512-BrpvfNAE3dcvq7ll3xVumzjKjZQ5tI1sEUIKr3Uoks0XUl45St3FlatVqef9prk4jRDzhW6WZg+3bk93y6pLjA=="
-    },
     "strip-json-comments": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-1.0.4.tgz",
@@ -9402,11 +8746,6 @@
       "integrity": "sha1-fSKbH8xjfkZsoIEYCDanqr/4P0M=",
       "dev": true
     },
-    "to-fast-properties": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/to-fast-properties/-/to-fast-properties-1.0.3.tgz",
-      "integrity": "sha1-uDVx+k2MJbguIxsG46MFXeTKGkc="
-    },
     "to-object-path": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/to-object-path/-/to-object-path-0.3.0.tgz",
@@ -9464,11 +8803,6 @@
       "integrity": "sha512-yaOH/Pk/VEhBWWTlhI+qXxDFXlejDGcQipMlyxda9nthulaxLZUNcUqFxokp0vcYnvteJln5FNQDRrxj3YcbVw==",
       "dev": true
     },
-    "token-stream": {
-      "version": "0.0.1",
-      "resolved": "https://registry.npmjs.org/token-stream/-/token-stream-0.0.1.tgz",
-      "integrity": "sha1-zu78cXp2xDFvEm0LnbqlXX598Bo="
-    },
     "tsconfig-paths": {
       "version": "3.9.0",
       "resolved": "https://registry.npmjs.org/tsconfig-paths/-/tsconfig-paths-3.9.0.tgz",
@@ -9553,50 +8887,6 @@
         "is-typedarray": "^1.0.0"
       }
     },
-    "uglify-js": {
-      "version": "2.8.29",
-      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-2.8.29.tgz",
-      "integrity": "sha1-KcVzMUgFe7Th913zW3qcty5qWd0=",
-      "requires": {
-        "source-map": "~0.5.1",
-        "uglify-to-browserify": "~1.0.0",
-        "yargs": "~3.10.0"
-      },
-      "dependencies": {
-        "camelcase": {
-          "version": "1.2.1",
-          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-1.2.1.tgz",
-          "integrity": "sha1-m7UwTS4LVmmLLHWLCKPqqdqlijk="
-        },
-        "cliui": {
-          "version": "2.1.0",
-          "resolved": "https://registry.npmjs.org/cliui/-/cliui-2.1.0.tgz",
-          "integrity": "sha1-S0dXYP+AJkx2LDoXGQMukcf+oNE=",
-          "requires": {
-            "center-align": "^0.1.1",
-            "right-align": "^0.1.1",
-            "wordwrap": "0.0.2"
-          }
-        },
-        "yargs": {
-          "version": "3.10.0",
-          "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz",
-          "integrity": "sha1-9+572FfdfB0tOMDnTvvWgdFDH9E=",
-          "requires": {
-            "camelcase": "^1.0.2",
-            "cliui": "^2.1.0",
-            "decamelize": "^1.0.0",
-            "window-size": "0.1.0"
-          }
-        }
-      }
-    },
-    "uglify-to-browserify": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/uglify-to-browserify/-/uglify-to-browserify-1.0.2.tgz",
-      "integrity": "sha1-bgkk1r2mta/jSeOabWMoUKD4grc=",
-      "optional": true
-    },
     "ultron": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ultron/-/ultron-1.1.1.tgz",
@@ -9701,11 +8991,6 @@
         "through2-filter": "^3.0.0"
       }
     },
-    "universalify": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/universalify/-/universalify-2.0.0.tgz",
-      "integrity": "sha512-hAZsKq7Yy11Zu1DE0OzWjw7nnLZmJZYTDZZyEFHZdUhV8FkH5MCfoU1XMaxXovpyW5nq5scPqq0ZDP9Zyl04oQ=="
-    },
     "unpipe": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
@@ -9944,11 +9229,6 @@
         "indexof": "0.0.1"
       }
     },
-    "void-elements": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/void-elements/-/void-elements-2.0.1.tgz",
-      "integrity": "sha1-wGavtYK7HLQSjWDqkjkulNXp2+w="
-    },
     "watchpack": {
       "version": "1.6.0",
       "resolved": "https://registry.npmjs.org/watchpack/-/watchpack-1.6.0.tgz",
@@ -10042,27 +9322,6 @@
       "integrity": "sha1-u6Y8qGGUiZT/MHc2CJ47lgJsKk8=",
       "dev": true
     },
-    "window-size": {
-      "version": "0.1.0",
-      "resolved": "https://registry.npmjs.org/window-size/-/window-size-0.1.0.tgz",
-      "integrity": "sha1-VDjNLqk7IC76Ohn+iIeu58lPnJ0="
-    },
-    "with": {
-      "version": "5.1.1",
-      "resolved": "https://registry.npmjs.org/with/-/with-5.1.1.tgz",
-      "integrity": "sha1-+k2qktrzLE6pTtRTyB8EaGtXXf4=",
-      "requires": {
-        "acorn": "^3.1.0",
-        "acorn-globals": "^3.0.0"
-      },
-      "dependencies": {
-        "acorn": {
-          "version": "3.3.0",
-          "resolved": "https://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
-          "integrity": "sha1-ReN/s56No/JbruP/U2niu18iAXo="
-        }
-      }
-    },
     "word-wrap": {
       "version": "1.2.3",
       "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.3.tgz",
@@ -10074,11 +9333,6 @@
       "resolved": "https://registry.npmjs.org/wordnet-db/-/wordnet-db-3.1.11.tgz",
       "integrity": "sha512-gU1pmI6SaXA38fA62OoJz1LAYo2B9vnT0lIw6ZCiCel2dlIP8gJ/4EutnkVzenR5QH6X57n/TmWyXPNfiD0uMA=="
     },
-    "wordwrap": {
-      "version": "0.0.2",
-      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.2.tgz",
-      "integrity": "sha1-t5Zpu0LstAn4PVg8rVLKF+qhZD8="
-    },
     "worker-farm": {
       "version": "1.6.0",
       "resolved": "https://registry.npmjs.org/worker-farm/-/worker-farm-1.6.0.tgz",
@@ -10141,20 +9395,6 @@
       "integrity": "sha512-PSNhEJDejZYV7h50BohL09Er9VaIefr2LMAf3OEmpCkjOi34eYyQYAXUTjEQtZJTKcF0E2UKTh+osDLsgNim9Q==",
       "dev": true
     },
-    "xml2js": {
-      "version": "0.4.23",
-      "resolved": "https://registry.npmjs.org/xml2js/-/xml2js-0.4.23.tgz",
-      "integrity": "sha512-ySPiMjM0+pLDftHgXY4By0uswI3SPKLDw/i3UXbnO8M/p28zqexCUoPmQFrYD+/1BzhGJSs2i1ERWKJAtiLrug==",
-      "requires": {
-        "sax": ">=0.6.0",
-        "xmlbuilder": "~11.0.0"
-      }
-    },
-    "xmlbuilder": {
-      "version": "11.0.1",
-      "resolved": "https://registry.npmjs.org/xmlbuilder/-/xmlbuilder-11.0.1.tgz",
-      "integrity": "sha512-fDlsI/kFEx7gLvbecc0/ohLG50fugQp8ryHzMTuW9vSa1GJ0XYWKnhsUx7oie3G98+r56aTQIUB4kht42R3JvA=="
-    },
     "xtend": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
diff --git a/spec/noun_inflector_spec.js b/spec/noun_inflector_spec.js
index a0beb8955..26203dcfc 100644
--- a/spec/noun_inflector_spec.js
+++ b/spec/noun_inflector_spec.js
@@ -295,4 +295,67 @@ describe('noun inflector', function () {
       expect(myInflector.singularize('buses')).toBe('bus')
     })
   })
+
+  describe('should handle words ending in f, ff, ffe', function () {
+    it('should handle words ending in ff and ffe', function () {
+      const myInflector = new NounInflector()
+      expect(myInflector.pluralize('sherriff')).toBe('sherriffs')
+      expect(myInflector.pluralize('giraffe')).toBe('giraffes')
+      expect(myInflector.singularize('sherriffs')).toBe('sherriff')
+      expect(myInflector.singularize('giraffes')).toBe('giraffe')
+    })
+
+    it('should handle words ending in f', function () {
+      const myInflector = new NounInflector()
+      expect(myInflector.pluralize('roof')).toBe('roofs')
+      expect(myInflector.pluralize('chief')).toBe('chiefs')
+      expect(myInflector.pluralize('oaf')).toBe('oafs')
+      expect(myInflector.singularize('roofs')).toBe('roof')
+      expect(myInflector.singularize('chiefs')).toBe('chief')
+      expect(myInflector.singularize('oafs')).toBe('oaf')
+    })
+
+    it('should handle words ending in f or fe', function () {
+      const myInflector = new NounInflector()
+      expect(myInflector.pluralize('leaf')).toBe('leaves')
+      expect(myInflector.pluralize('wolf')).toBe('wolves')
+      expect(myInflector.pluralize('calf')).toBe('calves')
+      expect(myInflector.pluralize('half')).toBe('halves')
+      expect(myInflector.pluralize('knife')).toBe('knives')
+      expect(myInflector.pluralize('loaf')).toBe('loaves')
+      expect(myInflector.pluralize('life')).toBe('lives')
+      expect(myInflector.pluralize('wife')).toBe('wives')
+      expect(myInflector.pluralize('shelf')).toBe('shelves')
+      expect(myInflector.pluralize('thief')).toBe('thieves')
+      expect(myInflector.pluralize('yourself')).toBe('yourselves')
+
+      expect(myInflector.singularize('leaves')).toBe('leaf')
+      expect(myInflector.singularize('wolves')).toBe('wolf')
+      expect(myInflector.singularize('calves')).toBe('calf')
+      expect(myInflector.singularize('halves')).toBe('half')
+      expect(myInflector.singularize('knives')).toBe('knife')
+      expect(myInflector.singularize('loaves')).toBe('loaf')
+      expect(myInflector.singularize('lives')).toBe('life')
+      expect(myInflector.singularize('wives')).toBe('wife')
+      expect(myInflector.singularize('shelves')).toBe('shelf')
+      expect(myInflector.singularize('thieves')).toBe('thief')
+      expect(myInflector.singularize('yourselves')).toBe('yourself')
+    })
+
+    it('should handle words ending in rf', function () {
+      const myInflector = new NounInflector()
+      expect(myInflector.pluralize('scarf')).toBe('scarfs')
+      expect(myInflector.pluralize('dwarf')).toBe('dwarfs')
+      expect(myInflector.pluralize('handkerchief')).toBe('handkerchiefs')
+      expect(myInflector.pluralize('wharf')).toBe('wharfs')
+      expect(myInflector.singularize('scarfs')).toBe('scarf')
+      expect(myInflector.singularize('dwarfs')).toBe('dwarf')
+      expect(myInflector.singularize('wharfs')).toBe('wharf')
+      expect(myInflector.singularize('handkerchiefs')).toBe('handkerchief')
+      expect(myInflector.singularize('scarves')).toBe('scarf')
+      expect(myInflector.singularize('dwarves')).toBe('dwarf')
+      expect(myInflector.singularize('wharves')).toBe('wharf')
+      expect(myInflector.singularize('handkerchieves')).toBe('handkerchief')
+    })
+  })
 })