├── test ├── test_helper.exs └── inflex_test.exs ├── .gitignore ├── .travis.yml ├── lib ├── inflex.ex └── inflex │ ├── parameterize.ex │ ├── underscore.ex │ ├── camelize.ex │ └── pluralize.ex ├── mix.exs ├── README.md └── LICENSE /test/test_helper.exs: -------------------------------------------------------------------------------- 1 | ExUnit.start 2 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | /_build 2 | /deps 3 | erl_crash.dump 4 | *.ez 5 | -------------------------------------------------------------------------------- /.travis.yml: -------------------------------------------------------------------------------- 1 | language: elixir 2 | elixir: 3 | - 1.0.0 4 | env: MIX_ENV=test 5 | otp_release: 6 | - 17.0 7 | -------------------------------------------------------------------------------- /lib/inflex.ex: -------------------------------------------------------------------------------- 1 | defmodule Inflex do 2 | use Inflex.Camelize 3 | use Inflex.Pluralize 4 | use Inflex.Parameterize 5 | use Inflex.Underscore 6 | 7 | defmacro __using__([]) do 8 | quote do 9 | use Inflex.Camelize 10 | use Inflex.Pluralize 11 | use Inflex.Parameterize 12 | use Inflex.Underscore 13 | end 14 | end 15 | end 16 | -------------------------------------------------------------------------------- /lib/inflex/parameterize.ex: -------------------------------------------------------------------------------- 1 | defmodule Inflex.Parameterize do 2 | 3 | defmacro __using__([]) do 4 | quote do 5 | import unquote __MODULE__ 6 | 7 | def parameterize(word, option\\"-") do 8 | Regex.split(~r/\s|\%20/, word) |> 9 | Enum.join(option) |> 10 | String.downcase 11 | end 12 | 13 | end 14 | end 15 | end 16 | -------------------------------------------------------------------------------- /lib/inflex/underscore.ex: -------------------------------------------------------------------------------- 1 | defmodule Inflex.Underscore do 2 | 3 | defmacro __using__([]) do 4 | quote do 5 | import unquote __MODULE__ 6 | 7 | def underscore(atom) when is_atom(atom) do 8 | case Atom.to_string(atom) do 9 | "Elixir." <> rest -> underscore(rest) 10 | word -> underscore(word) 11 | end 12 | end 13 | 14 | def underscore(word) when is_binary(word) do 15 | word 16 | |> String.replace(~r/([A-Z]+)([A-Z][a-z])/, "\\1_\\2") 17 | |> String.replace(~r/([a-z\d])([A-Z])/, "\\1_\\2") 18 | |> String.replace(~r/-/, "_") 19 | |> String.downcase 20 | end 21 | 22 | end 23 | end 24 | end 25 | -------------------------------------------------------------------------------- /mix.exs: -------------------------------------------------------------------------------- 1 | Code.ensure_loaded?(Hex) and Hex.start 2 | 3 | defmodule Inflex.Mixfile do 4 | use Mix.Project 5 | 6 | def project do 7 | [ 8 | app: :inflex, 9 | version: "1.3.0", 10 | elixir: ">= 1.0.0", 11 | deps: [], 12 | package: [ 13 | files: ["lib", "mix.exs", "README*", "LICENSE*"], 14 | contributors: ["Johnny Winn"], 15 | licenses: ["Apache 2.0"], 16 | links: %{ "GitHub" => "https://github.com/nurugger07/inflex" } 17 | ], 18 | description: """ 19 | An Elixir library for handling word inflections. 20 | """, 21 | ] 22 | end 23 | 24 | # Configuration for the OTP application 25 | def application do 26 | [] 27 | end 28 | end 29 | -------------------------------------------------------------------------------- /lib/inflex/camelize.ex: -------------------------------------------------------------------------------- 1 | defmodule Inflex.Camelize do 2 | 3 | defmacro __using__([]) do 4 | quote do 5 | import unquote __MODULE__ 6 | 7 | def camelize(word, option\\:upper) do 8 | case Regex.split(~r/(?:^|[-_])|(?=[A-Z])/, to_string(word)) do 9 | words -> words |> camelize_list(option) 10 | |> Enum.join 11 | end 12 | end 13 | 14 | defp camelize_list([], :upper), do: [] 15 | defp camelize_list([h|tail], :lower) do 16 | [lowercase(h)] ++ camelize_list(tail, :upper) 17 | end 18 | defp camelize_list([h|tail], :upper) do 19 | [capitalize(h)] ++ camelize_list(tail, :upper) 20 | end 21 | 22 | def capitalize(word), do: String.capitalize(word) 23 | def lowercase(word), do: String.downcase(word) 24 | end 25 | end 26 | end 27 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Inflex[![Build Status](https://travis-ci.org/nurugger07/inflex.png?branch=master)](https://travis-ci.org/nurugger07/inflex) 2 | 3 | An Elixir library for handling word inflections. 4 | 5 | ## Getting Started 6 | 7 | You can add Inflex as a dependency in your `mix.exs` file. Since it only requires Elixir and Erlang there are no other dependencies. 8 | 9 | ```elixir 10 | def deps do 11 | [ { :inflex, "~> 1.3.0" } ] 12 | end 13 | ``` 14 | 15 | If you are not using [hex](http://hex.pm) you can add the dependency using the github repo. 16 | 17 | ``` elixir 18 | 19 | def deps do 20 | [ { :inflex, github: "nurugger07/inflex" } ] 21 | end 22 | 23 | ``` 24 | 25 | Then run `mix deps.get` in the shell to fetch and compile the dependencies. 26 | 27 | To incorporate Inflex in your modules, use `import`. 28 | 29 | ``` elixir 30 | 31 | defmodule YourModule do 32 | import Inflex 33 | 34 | def make_singular(word), do: singularize(word) 35 | 36 | end 37 | 38 | ``` 39 | 40 | ## Examples 41 | 42 | ### Singularize & Pluralize 43 | 44 | Here are some basic examples from `iex`: 45 | 46 | ``` elixir 47 | 48 | iex(1)> Inflex.singularize("dogs") 49 | "dog" 50 | 51 | iex(2)> Inflex.pluralize("dog") 52 | "dogs" 53 | 54 | iex(3)> Inflex.singularize("people") 55 | "person" 56 | 57 | iex(4)> Inflex.pluralize("person") 58 | "people" 59 | 60 | ``` 61 | 62 | Some other special cases are handled for nouns ending in -o and -y 63 | 64 | ```elixir 65 | 66 | 67 | iex(1)> Inflex.pluralize("piano") 68 | "pianos" 69 | 70 | iex(2)> Inflex.pluralize("hero") 71 | "heroes" 72 | 73 | iex(3)> Inflex.pluralize("butterfly") 74 | "butterflies" 75 | 76 | iex(4)> Inflex.pluralize("monkey") 77 | "monkeys" 78 | 79 | ``` 80 | 81 | ### Inflect 82 | 83 | ``` elixir 84 | iex(1)> Inflex.inflect("child", 1) 85 | "child" 86 | 87 | iex(2)> Inflex.inflect("child", 2) 88 | "children" 89 | ``` 90 | 91 | ### Camelize & Pascalize 92 | 93 | Inflex also camelizes or pascalizes strings and atoms. 94 | 95 | ``` 96 | 97 | iex(1)> Inflex.camelize(:upper_camel_case) 98 | "UpperCamelCase" 99 | 100 | iex(2)> Inflex.camelize("pascal-case", :lower) 101 | "pascalCase" 102 | 103 | ``` 104 | 105 | ### Parameterize 106 | 107 | Strings can be parameterized easily. 108 | 109 | ``` 110 | 111 | iex(1)> Inflex.parameterize("String for parameter") 112 | "string-for-parameter" 113 | 114 | iex(2)> Inflex.parameterize("String with underscore", "_") 115 | "string_with_underscore" 116 | 117 | ``` 118 | 119 | ### Underscore 120 | 121 | Makes an underscored, lowercase form from a string or atom. 122 | 123 | ``` 124 | 125 | iex(1)> Inflex.underscore("UpperCamelCase") 126 | "upper_camel_case" 127 | 128 | iex(2)> Inflex.underscore("pascalCase") 129 | "pascal_case" 130 | 131 | iex(3)> Inflex.underscore(UpperCamelCase) 132 | "upper_camel_case" 133 | 134 | iex(4)> Inflex.underscore(:pascalCase) 135 | "pascal_case" 136 | 137 | ``` 138 | 139 | ## Contributing 140 | 141 | All pull requests will be reviewed for inclusion but must include tests. 142 | -------------------------------------------------------------------------------- /lib/inflex/pluralize.ex: -------------------------------------------------------------------------------- 1 | defmodule Inflex.Pluralize do 2 | 3 | defmacro __using__([]) do 4 | quote do 5 | @default true 6 | 7 | @uncountable [ 8 | "equipment", 9 | "fish", 10 | "information", 11 | "jeans", 12 | "money", 13 | "police", 14 | "rice", 15 | "series", 16 | "sheep", 17 | "species" 18 | ] 19 | 20 | @irregular [ 21 | { ~r/people/i, "person" }, 22 | { ~r/^(zombie)s$/i, "\\1" }, 23 | { ~r/geese/i, "goose" }, 24 | { ~r/criteria/i, "criterion" }, 25 | { ~r/radii/i, "radius" }, 26 | { ~r/^men/i, "man"}, 27 | { ~r/^echoes/i, "echo"}, 28 | { ~r/^heroes/i, "hero"}, 29 | { ~r/^potatoes/i, "potato"}, 30 | { ~r/^tomatoes/i, "tomato"}, 31 | { ~r/^teeth/i, "tooth"}, 32 | { ~r/^lice$/i, "louse"}, 33 | { ~r/^quanta/i, "quantum"}, 34 | { ~r/^dice/i, "die"}, 35 | { ~r/^feet/i, "foot"}, 36 | { ~r/^phenomena/i, "phenomenon"}, 37 | ] 38 | 39 | @plural_irregular [ 40 | { ~r/person/i, "people" }, 41 | { ~r/^zombies$/i, "zombie" }, 42 | { ~r/goose/i, "geese" }, 43 | { ~r/criterion/i, "criteria" }, 44 | { ~r/radius/i, "radii" }, 45 | { ~r/man/i, "men"}, 46 | { ~r/^men/i, "men"}, 47 | { ~r/^women/i, "women"}, 48 | { ~r/^echo/i, "echoes"}, 49 | { ~r/^hero/i, "heroes"}, 50 | { ~r/^potato/i, "potatoes"}, 51 | { ~r/^tomato/i, "tomatoes"}, 52 | { ~r/^tooth/i, "teeth"}, 53 | { ~r/^louse/i, "lice"}, 54 | { ~r/^quantum/i, "quanta"}, 55 | { ~r/^die/i, "dice"}, 56 | { ~r/^foot/i, "feet"}, 57 | { ~r/^phenomenon/i, "phenomena"}, 58 | ] 59 | 60 | @singular @irregular ++ [ 61 | { ~r/(child)ren/i, "\\1" }, 62 | { ~r/(wo|sea)men$/i, "\\1man" }, 63 | { ~r/(m|l)ice$/i, "\\1ouse" }, 64 | { ~r/(bus)(es)?$/i, "\\1" }, 65 | { ~r/(ss)$/i, "\\1" }, 66 | { ~r/(database)s$/i, "\\1" }, 67 | { ~r/(n)ews$/i, "\\1ews" }, 68 | { ~r/([ti])a$/i, "\1um" }, 69 | { ~r/((a)naly|(b)a|(d)iagno|(p)arenthe|(p)rogno|(s)ynop|(t)he)(sis|ses)$/i, "\\1sis" }, 70 | { ~r/(analy)(sis|ses)$/i, "\\1sis" }, 71 | { ~r/(octop|vir)i$/i, "\\1us" }, 72 | { ~r/([^f])ves$/i, "\\1fe" }, 73 | { ~r/(hive)s$/i, "\\1" }, 74 | { ~r/(tive)s$/i, '\\1' }, 75 | { ~r/([lr])ves$/i, "\\1f" }, 76 | { ~r/([^aeiouy]|qu)ies$/i, "\\1y" }, 77 | { ~r/(m)ovies$/i, "\\1ovie" }, 78 | { ~r/(x|ch|ss|sh)es$/i, "\\1" }, 79 | { ~r/(shoe)s$/i, "\\1" }, 80 | { ~r/(o)es$/i, "\\1" }, 81 | { ~r/s$/i, "" }, 82 | ] 83 | 84 | @plural @plural_irregular ++ [ 85 | { ~r/(child)$/i, "\\1ren" }, 86 | { ~r/(wo)?man$/i, "\\1men" }, 87 | { ~r/(m|l)ouse/i, "\\1ice" }, 88 | { ~r/(database)s$/i, "\\1" }, 89 | { ~r/(quiz)$/i, "\\1zes" }, 90 | { ~r/^(ox)$/i, "\\1en" }, 91 | { ~r/(matr|vert|ind)ix|ex$/i, "\\1ices" }, 92 | { ~r/(x|ch|ss|sh)$/i, "\\1es" }, 93 | { ~r/([^aeiouy]|qu)y$/i, "\\1ies" }, 94 | { ~r/(hive)$/i, "\\1s" }, 95 | { ~r/(?:([^f])fe|([lr])f)$/i, "\\1\\1ves" }, 96 | { ~r/sis$/i, "ses" }, 97 | { ~r/([ti])um$/i, "\\1a" }, 98 | { ~r/(buffal|tomat)o$/i, "\\1oes" }, 99 | { ~r/(octop|vir)us$/i, "\\1i" }, 100 | { ~r/(alias|status)$/i, "\\1es" }, 101 | { ~r/(ax|test)is$/i, "\\1es" }, 102 | { ~r/(bus)$/i, "\\1es" }, 103 | { ~r/s$/i, "s" }, 104 | { ~r/$/i, "s" }, 105 | ] 106 | 107 | 108 | def singularize(word), do: find_match(@singular, word) 109 | 110 | def pluralize(word), do: find_match(@plural, word) 111 | 112 | def inflect(word, 1), do: singularize word 113 | def inflect(word, n) when is_number(n), do: pluralize word 114 | 115 | defp find_match(set, word) do 116 | cond do 117 | uncountable?(word) -> word 118 | @default -> replace_match(set, word) 119 | end 120 | end 121 | 122 | defp replace_match(set, word) do 123 | find_in_set(set, word) |> replace(word) 124 | end 125 | 126 | defp find_in_set(set, word) do 127 | Enum.find(set, fn({ reg, _ }) -> Regex.match?(reg, word) end) 128 | end 129 | 130 | defp replace({regex, replacement}, word) do 131 | Regex.replace(regex, word, replacement) 132 | end 133 | defp replace(_, word), do: word 134 | 135 | defp uncountable?(word), do: Enum.member?(@uncountable, word) 136 | end 137 | end 138 | 139 | end 140 | -------------------------------------------------------------------------------- /test/inflex_test.exs: -------------------------------------------------------------------------------- 1 | defmodule InflexTest do 2 | use ExUnit.Case 3 | 4 | use Inflex 5 | 6 | test :singularize do 7 | assert "user" == singularize("users") 8 | assert "sheep" == singularize("sheep") 9 | assert "mouse" == singularize("mice") 10 | assert "child" == singularize("children") 11 | 12 | assert "bus" == singularize("buses") 13 | assert "database" == singularize("databases") 14 | assert "shoe" == singularize("shoes") 15 | assert "zombie" == singularize("zombies") 16 | assert "virus" == singularize("viri") 17 | assert "goose" == singularize("geese") 18 | assert "criterion" == singularize("criteria") 19 | assert "radius" == singularize("radii") 20 | assert "class" == singularize("classes") 21 | assert "woman" == singularize("women") 22 | assert "seaman" == singularize("seamen") 23 | assert "man" == singularize("men") 24 | assert "abdomen" == singularize("abdomens") 25 | assert "abdomen" == singularize("abdomen") 26 | assert "specimen" == singularize("specimens") 27 | assert "specimen" == singularize("specimen") 28 | assert "louse" == singularize("lice") 29 | assert "quantum" == singularize("quanta") 30 | assert "foot" == singularize("feet") 31 | assert "die" == singularize("dice") 32 | assert "phenomenon" == singularize("phenomena") 33 | assert "license" == singularize("licenses") 34 | end 35 | 36 | test :pluralize do 37 | assert "users" == pluralize("user") 38 | assert "sheep" == pluralize("sheep") 39 | assert "mice" == pluralize("mouse") 40 | assert "children" == pluralize("child") 41 | 42 | assert "buses" == pluralize("bus") 43 | assert "databases" == pluralize("database") 44 | assert "shoes" == pluralize("shoe") 45 | assert "viri" == pluralize("virus") 46 | assert "geese" == pluralize("goose") 47 | assert "criteria" == pluralize("criterion") 48 | assert "radii" == pluralize("radius") 49 | assert "classes" == pluralize("class") 50 | assert "women" == pluralize("woman") 51 | assert "seamen" == pluralize("seaman") 52 | assert "men" == pluralize("men") 53 | assert "women" == pluralize("women") 54 | assert "abdomens" == pluralize("abdomen") 55 | assert "specimens" == pluralize("specimen") 56 | assert "lice" == pluralize("louse") 57 | assert "quanta" == pluralize("quantum") 58 | assert "feet" == pluralize("foot") 59 | assert "dice" == pluralize("die") 60 | assert "phenomena" == pluralize("phenomenon") 61 | end 62 | 63 | test :special_case_nouns_ending_in_o do 64 | assert "echo" == singularize("echoes") 65 | assert "hero" == singularize("heroes") 66 | assert "potato" == singularize("potatoes") 67 | assert "tomato" == singularize("tomatoes") 68 | assert "tooth" == singularize("teeth") 69 | 70 | assert "echoes" == pluralize("echo") 71 | assert "heroes" == pluralize("hero") 72 | assert "potatoes" == pluralize("potato") 73 | assert "tomatoes" == pluralize("tomato") 74 | assert "teeth" == pluralize("tooth") 75 | end 76 | 77 | test :skip_singularize do 78 | assert "dog" == singularize("dog") 79 | end 80 | 81 | test :skip_pluralize do 82 | assert "dogs" == pluralize("dogs") 83 | end 84 | 85 | test :camelize_upper do 86 | assert "Upper" == camelize("upper") 87 | assert "UpperCamelCase" == camelize("upper_camel_case") 88 | assert "UpperCamelCase" == camelize("UpperCamelCase") 89 | refute "UpperCamelCase" == camelize("upper_camel_case", :lower) 90 | end 91 | 92 | test :camelize_lower do 93 | assert "lower" == camelize("lower", :lower) 94 | assert "lowerCamelCase" == camelize("lower_camel_case", :lower) 95 | assert "lowerCamelCase" == camelize("Lower_camel_case", :lower) 96 | assert "lowerCamelCase" == camelize("lowerCamelCase", :lower) 97 | refute "lowerCamelCase" == camelize("lower_camel_case") 98 | end 99 | 100 | test :parameterize do 101 | assert "elixir-inflex" == parameterize("elixir inflex") 102 | assert "elixir-inflex" == parameterize("Elixir Inflex") 103 | assert "elixir_inflex" == parameterize("elixir inflex", "_") 104 | assert "elixir-inflex" == parameterize("elixir%20inflex") 105 | end 106 | 107 | test :underscore do 108 | assert "upper_camel_case" == underscore("UpperCamelCase") 109 | assert "lower_camel_case" == underscore("lowerCamelCase") 110 | assert "upper_camel_case" == underscore(UpperCamelCase) 111 | assert "lower_camel_case" == underscore(:lowerCamelCase) 112 | assert "elixir_inflex" == underscore("elixir-inflex") 113 | assert "elixir_inflex" == underscore("Elixir-Inflex") 114 | end 115 | 116 | test :inflect do 117 | assert "child" == inflect("children", 1) 118 | assert "people" == inflect("person", 2) 119 | assert "dogs" == inflect("dog", 3.2) 120 | end 121 | 122 | end 123 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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