├── .travis.yml ├── LICENSE ├── README.md └── verbal_expressions ├── .gitignore ├── README.md ├── lib └── verbal_expressions.ex ├── mix.exs ├── package.verbal_expressions.exs └── test ├── test_helper.exs ├── verbal_expressions_examples_test.exs └── verbal_expressions_test.exs /.travis.yml: -------------------------------------------------------------------------------- 1 | language: erlang 2 | notifications: 3 | recipients: 4 | - github@maxsz.de 5 | otp_release: 6 | - R16B 7 | before_install: 8 | - git clone https://github.com/elixir-lang/elixir 9 | - cd elixir && make && cd .. 10 | before_script: "export PATH=`pwd`/elixir/bin:$PATH" 11 | script: "cd verbal_expressions && MIX_ENV=test mix test" 12 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. {http://fsf.org/} 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see {http://www.gnu.org/licenses/}. 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | ElixirVerbalExpressions Copyright (C) 2013 Max 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | {http://www.gnu.org/licenses/}. 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | {http://www.gnu.org/philosophy/why-not-lgpl.html}. 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | ElixirVerbalExpressions 2 | ======================= 3 | 4 | Elixir Regular Expressions made easy. Ported from the JavaScript version [VerbalExpressions](https://github.com/jehna/VerbalExpressions). 5 | 6 | [![Build Status](https://travis-ci.org/maxsz/ElixirVerbalExpressions.png)](https://travis-ci.org/maxsz/ElixirVerbalExpressions) 7 | 8 | ## How to get started 9 | 10 | Include the VerbalExpressions module (and alias it, if you want). Then simply check out the Examples and documentation to get started. It's easy :) 11 | 12 | ## Examples 13 | 14 | Here's a couple of simple examples to give an idea of how VerbalExpressions works: 15 | 16 | ### Testing if we have a valid URL 17 | 18 | ```elixir 19 | # Create an example of how to test for correctly formed URLs 20 | alias VerbalExpressions, as: VerEx 21 | tester = VerEx.startOfLine() 22 | |> VerEx.then("http") 23 | |> VerEx.maybe("s") 24 | |> VerEx.then("://") 25 | |> VerEx.maybe("www") 26 | |> VerEx.anythingBut(" ") 27 | |> VerEx.endOfLine() 28 | 29 | testMe = "https://www.google.com" 30 | 31 | result = tester |> VerEx.match?(testMe) 32 | 33 | if result do 34 | IO.puts "Valid URL :)" 35 | else 36 | IO.puts "Invalid URL :(" 37 | end 38 | 39 | ``` 40 | 41 | ### Replacing strings 42 | 43 | ```elixir 44 | # Create a test string 45 | replaceMe = "Replace bird with a duck" 46 | 47 | # Create an expression that seeks for word "bird" 48 | expression = VerEx.find "bird" 49 | 50 | # Execute the expression like a normal RegExp object 51 | result = expression |> VerEx.replace replaceMe, "duck" 52 | 53 | IO.puts result # Outputs "Replace duck with a duck" 54 | ``` 55 | 56 | ### Shorthand for string replace: 57 | 58 | ```elixir 59 | result = VerEx.find("red") |> VerEx.replace "We have a red house", "blue" 60 | 61 | IO.puts result # Outputs "We have a blue house" 62 | ``` 63 | 64 | ### Method chaining 65 | 66 | The original version of VerbalExpressions uses method chaining. This version of 67 | verbal expressions in Elixir does not only support the (nicer) `|>`-based 68 | chaining, but also has a record-based version for method-chaining support. 69 | 70 | Here is the above string replace example using method chaining: 71 | 72 | ```elixir 73 | v = VerbalExpressionRecord.new 74 | result = v.find("red").replace("We have a red house", "blue") 75 | 76 | IO.puts result # Outputs "We have a blue house" 77 | ``` 78 | 79 | ## API documentation 80 | 81 | You can find the API documentation on it's [own page](http://maxsz.github.io/ElixirVerbalExpressions/docs/index.html). 82 | 83 | ## Contributions 84 | Pull requests are welcome. 85 | 86 | ## Issues 87 | Please report any issues to the GitHub issuetracker. 88 | 89 | ## Thanks 90 | Thank you to @jehna for coming up with the awesome original idea! 91 | 92 | -------------------------------------------------------------------------------- /verbal_expressions/.gitignore: -------------------------------------------------------------------------------- 1 | /ebin 2 | /deps 3 | erl_crash.dump 4 | *.ez 5 | -------------------------------------------------------------------------------- /verbal_expressions/README.md: -------------------------------------------------------------------------------- 1 | # VerbalExpressions 2 | 3 | Use VerbalExpressions, as the name suggests, to express Regular Expressions in a 4 | more verbal way. Instead of a rather cryptic regular expressions like: 5 | 6 | Regex.match?(%r/^te?.*s[^t]*$/, "test") 7 | 8 | you can use VerbalExpressions to write: 9 | 10 | startOfLine() 11 | |> then("t") 12 | |> maybe("e") 13 | |> anything() 14 | |> then("s") 15 | |> anythingBut("t") 16 | |> endOfLine() 17 | |> match?("test") 18 | 19 | -------------------------------------------------------------------------------- /verbal_expressions/lib/verbal_expressions.ex: -------------------------------------------------------------------------------- 1 | defmodule VerbalExpressions do 2 | @moduledoc """ 3 | Use VerbalExpressions, as the name suggests, to express Regular Expressions in 4 | a more verbal way. Instead of a rather cryptic regular expressions like: 5 | 6 | iex>Regex.match?(%r/^te?.*s.+$/, "test") 7 | true 8 | 9 | you can use VerbalExpressions to write: 10 | 11 | iex> VerbalExpressions.startOfLine() 12 | iex> |> VerbalExpressions.then("t") 13 | iex> |> VerbalExpressions.maybe("e") 14 | iex> |> VerbalExpressions.anything() 15 | iex> |> VerbalExpressions.then("s") 16 | iex> |> VerbalExpressions.something() 17 | iex> |> VerbalExpressions.endOfLine() 18 | iex> |> VerbalExpressions.match?("test") 19 | true 20 | """ 21 | 22 | @doc """ 23 | Match a given string with a given regex string. 24 | 25 | ## Examples 26 | iex> VE.find("@") |> VE.match?("some@email.com") 27 | true 28 | 29 | """ 30 | def match?(regex, string) do 31 | Regex.match?(Regex.compile!(regex), string) 32 | end 33 | 34 | @doc """ 35 | Replace the occurences of regex in the given string with the given replacement 36 | text. 37 | 38 | ## Examples 39 | iex> VE.find("x") |> VE.replace("xyz", "") 40 | "yz" 41 | 42 | """ 43 | def replace(regex, string, replacement) do 44 | Regex.compile!(regex) |> Regex.replace string, replacement 45 | end 46 | 47 | @doc """ 48 | Express the start of a line regex anchor. This translates to '^'. 49 | """ 50 | def startOfLine() do 51 | "^" 52 | end 53 | 54 | @doc """ 55 | Express the end of a line regex anchor. This translates to '$'. 56 | """ 57 | def endOfLine(before // "") do 58 | before <> "$" 59 | end 60 | 61 | @doc """ 62 | Express an exact string match. 63 | 64 | ## Examples 65 | 66 | iex> VE.then("x") |> VE.match?("x") 67 | true 68 | 69 | iex> VE.then("hello") |> VE.match?("holla") 70 | false 71 | 72 | """ 73 | def then(before // "", string) do 74 | before <> "(?:" <> Regex.escape(string) <> ")" 75 | end 76 | 77 | @doc """ 78 | See then/1. Defined for API compatibility with the Javascript version. The 79 | Elixir matching can be started with then/1, as well. 80 | """ 81 | def find(before // "", string) do 82 | then(before, string) 83 | end 84 | 85 | @doc """ 86 | Express an optional string match. This translates to (string)?. 87 | 88 | ## Examples 89 | 90 | iex> VE.find("12") |> VE.maybe("h") |> VE.maybe("m") |> VE.match?("12h") 91 | true 92 | 93 | """ 94 | def maybe(before // "", string) do 95 | before <> "(?:" <> Regex.escape(string) <> ")?" 96 | end 97 | 98 | @doc """ 99 | Match any number of any characters. Translates to '.*'. 100 | 101 | ## Examples 102 | 103 | iex> VE.anything() |> VE.then("hours") |> VE.match?("12 hours") 104 | true 105 | 106 | iex> VE.anything() |> VE.then("hours") |> VE.match?("24 hours") 107 | true 108 | 109 | iex> VE.anything() |> VE.then("hours") |> VE.match?("10 minutes") 110 | false 111 | 112 | """ 113 | def anything(before // "") do 114 | before <> "(?:.*)" 115 | end 116 | 117 | @doc """ 118 | Match anything but the given string. Translates to "[^string]*". 119 | 120 | ## Examples 121 | 122 | iex> VE.anythingBut("www.google.com") |> VE.match?("www.elixir-lang.org") 123 | true 124 | 125 | iex> VE.find("W") |> VE.anythingBut("O") |> VE.then("W") |> VE.match?("WOW") 126 | false 127 | """ 128 | def anythingBut(before // "", string) do 129 | before <> "(?:[^" <> Regex.escape(string) <> "]*)" 130 | end 131 | 132 | @doc """ 133 | Match any string but the empty one. Translates to ".+". 134 | 135 | ## Examples 136 | 137 | iex> VE.something() |> VE.match?("") 138 | false 139 | 140 | iex> VE.something() |> VE.match?("foo") 141 | true 142 | 143 | """ 144 | def something(before // "") do 145 | before <> "(?:.+)" 146 | end 147 | 148 | @doc """ 149 | Match anything except the given string and the empty string. Translates to 150 | "[^string]+". 151 | 152 | ## Examples 153 | 154 | iex> VE.somethingBut("www.") |> VE.match?("ftp.google.com") 155 | true 156 | 157 | iex> VE.startOfLine() |> VE.somethingBut("www.") |> VE.match?("www.google.com") 158 | false 159 | 160 | """ 161 | def somethingBut(before // "", string) do 162 | before <> "(?:[^" <> Regex.escape(string) <> "]+)" 163 | end 164 | 165 | @doc """ 166 | Matches any line break. 167 | 168 | ## Examples 169 | iex> VE.lineBreak() |> VE.match?("Hi") 170 | false 171 | 172 | iex> VE.find("Hi") |> VE.lineBreak() |> VE.match?("Hi\\n") 173 | true 174 | """ 175 | def lineBreak(before // "") do 176 | before <> "(?:(?:\n)|(?:\r\n))" 177 | end 178 | 179 | @doc "Alias for linebreak/1" 180 | def br(before // "") do 181 | lineBreak(before) 182 | end 183 | 184 | @doc "Match the character." 185 | def tab(before // "") do 186 | before <> "\t" 187 | end 188 | 189 | @doc "Match at least one word" 190 | def word(before // "") do 191 | before <> "\w+" 192 | end 193 | 194 | @doc """ 195 | Match any character in the given string. 196 | 197 | ## Examples 198 | 199 | iex> VE.anyOf("abcd") |> VE.match?("e") 200 | false 201 | 202 | iex> VE.anyOf("abcd") |> VE.match?("a") 203 | true 204 | """ 205 | def anyOf(before // "", string) do 206 | before <> "(?:[" <> string <> "])" 207 | end 208 | 209 | @doc "Alias for anyOf/2" 210 | def any(before // "", string) do 211 | anyOf(before, string) 212 | end 213 | 214 | def range(_before // "", _string) do 215 | raise "Not yet implemented" 216 | end 217 | end 218 | 219 | 220 | defrecord VerbalExpressionRecord, regex: "" do 221 | @docmodule """ 222 | Verbal Expressions as Records, to allow chaining of function calls. 223 | 224 | Verbal Expressions can also be used with records, which add a syntax very much 225 | like the Javascript original. Records allow you to chain function calls, 226 | instead of using the |> operator. See the following examples to get the idea. 227 | 228 | ### Examples 229 | 230 | iex>v = VerbalExpressionRecord.new 231 | iex>v.startOfLine().then("hello").match?("world") 232 | false 233 | 234 | """ 235 | 236 | def match?(string, record) do 237 | Regex.match?(Regex.compile!(record.regex), string) 238 | end 239 | 240 | def replace(string, replacement, record) do 241 | Regex.compile!(record.regex) |> Regex.replace(string, replacement) 242 | end 243 | 244 | def startOfLine(record) do 245 | record.update_regex fn _ -> "^" end 246 | end 247 | 248 | def endOfLine(record) do 249 | record.update_regex fn before -> before <> "$" end 250 | end 251 | 252 | def then(string, record) do 253 | record.update_regex fn before -> 254 | before <> "(?:" <> Regex.escape(string) <> ")" 255 | end 256 | end 257 | 258 | def find(string, record) do 259 | then(string, record) 260 | end 261 | 262 | def maybe(string, record) do 263 | record.update_regex fn before -> 264 | before <> "(?:" <> Regex.escape(string) <> ")?" 265 | end 266 | end 267 | 268 | def anything(record) do 269 | record.update_regex fn before -> before <> "(?:.*)" end 270 | end 271 | 272 | def anythingBut(string, record) do 273 | record.update_regex fn before -> 274 | before <> "?:[^" <> Regex.escape(string) <> "]*)" 275 | end 276 | end 277 | 278 | def something(record) do 279 | record.update_regex fn before -> before <> "(?:.+)" end 280 | end 281 | 282 | def somethingBut(string, record) do 283 | record.update_regex fn before -> 284 | before <> "(?:[^" <> Regex.escape(string) <> "]+" 285 | end 286 | end 287 | 288 | def lineBreak(record) do 289 | record.update_regex fn before -> 290 | before <> "(?:(?:\n)|(?:\r\n))" 291 | end 292 | end 293 | 294 | def br(record) do 295 | lineBreak(record) 296 | end 297 | 298 | def tab(record) do 299 | record.update_regex fn before -> 300 | before <> "\t" 301 | end 302 | end 303 | 304 | def word(record) do 305 | record.update_regex fn before -> 306 | before <> "\w+" 307 | end 308 | end 309 | 310 | def anyOf(string, record) do 311 | record.update_regex fn before -> 312 | before <> "(?:[" <> string <> "])" 313 | end 314 | end 315 | 316 | def any(string, record) do 317 | anyOf(string, record) 318 | end 319 | 320 | def range(_string, _record) do 321 | raise "Not yet implemented" 322 | end 323 | end 324 | -------------------------------------------------------------------------------- /verbal_expressions/mix.exs: -------------------------------------------------------------------------------- 1 | defmodule VerbalExpressions.Mixfile do 2 | use Mix.Project 3 | 4 | def project do 5 | [ app: :verbal_expressions, 6 | version: "0.2", 7 | name: "ElixirVerbalExpressions", 8 | source_url: "https://github.com/maxsz/ElixirVerbalExpressions", 9 | elixir: "~> 0.10.1", 10 | deps: deps, 11 | env: [test: [deps: deps_test]]] 12 | end 13 | 14 | # Configuration for the OTP application 15 | def application do 16 | [] 17 | end 18 | 19 | defp deps do 20 | [ { :ex_doc, github: "elixir-lang/ex_doc" } ] 21 | end 22 | 23 | defp deps_test do 24 | [] 25 | end 26 | end 27 | -------------------------------------------------------------------------------- /verbal_expressions/package.verbal_expressions.exs: -------------------------------------------------------------------------------- 1 | Expm.Package.new(name: "verbal_expressions", 2 | description: "Express Regular Expressions more verbally.", 3 | version: "0.2", 4 | keywords: ["Elixir","Regex","Regular Expressions"], 5 | maintainers: [[name: "Maximilian Szengel", email: "maximilian.szengel@gmail.com"]], 6 | repositories: [[github: "maxsz/ElixirVerbalExpressions", tag: "v0.2"]]) 7 | -------------------------------------------------------------------------------- /verbal_expressions/test/test_helper.exs: -------------------------------------------------------------------------------- 1 | ExUnit.start 2 | -------------------------------------------------------------------------------- /verbal_expressions/test/verbal_expressions_examples_test.exs: -------------------------------------------------------------------------------- 1 | defmodule VerbalExpressionsExamplesTest do 2 | use ExUnit.Case 3 | alias VerbalExpressions, as: VerEx 4 | 5 | @moduledoc """ 6 | Testcases for the examples shown in the readme file. Directly ported from the 7 | Jacascript version. 8 | """ 9 | 10 | test "valid url" do 11 | # Create an example of how to test for correctly formed URLs 12 | tester = VerEx.startOfLine() 13 | |> VerEx.then("http") 14 | |> VerEx.maybe("s") 15 | |> VerEx.then("://") 16 | |> VerEx.maybe("www") 17 | |> VerEx.anythingBut(" ") 18 | |> VerEx.endOfLine() 19 | 20 | testMe = "https://www.google.com" 21 | result = tester |> VerEx.match?(testMe) 22 | 23 | assert result 24 | end 25 | 26 | test "replacing strings" do 27 | # Create a test string 28 | replaceMe = "Replace bird with a duck" 29 | 30 | # Create an expression that seeks for word "bird" 31 | expression = VerEx.find "bird" 32 | 33 | # Execute the expression like a normal RegExp object 34 | result = expression |> VerEx.replace replaceMe, "duck" 35 | 36 | assert result == "Replace duck with a duck" 37 | end 38 | 39 | test "replacing strings shorthand" do 40 | result = VerEx.find("red") |> VerEx.replace "We have a red house", "blue" 41 | 42 | assert result == "We have a blue house" 43 | end 44 | 45 | test "replacing strings shorthand chaining" do 46 | v = VerbalExpressionRecord.new 47 | result = v.find("red").replace("We have a red house", "blue") 48 | 49 | assert result == "We have a blue house" 50 | end 51 | end 52 | -------------------------------------------------------------------------------- /verbal_expressions/test/verbal_expressions_test.exs: -------------------------------------------------------------------------------- 1 | defmodule VerbalExpressionsTest do 2 | use ExUnit.Case 3 | alias VerbalExpressions, as: VE 4 | doctest VerbalExpressions 5 | 6 | test "record" do 7 | v = VerbalExpressionRecord.new 8 | 9 | assert v.startOfLine().then("xyz").match?("xyz") 10 | assert !v.startOfLine().then("xyz").match?("zyx") 11 | assert v.find(".").replace("Hello World.", "!") == "Hello World!" 12 | end 13 | 14 | test "concatenation" do 15 | assert "^(?:x)(?:x)?$" == VE.startOfLine() 16 | |> VE.then("x") 17 | |> VE.maybe("x") 18 | |> VE.endOfLine() 19 | end 20 | 21 | test "matching" do 22 | assert VE.startOfLine() 23 | |> VE.then("x") 24 | |> VE.maybe("y") 25 | |> VE.match?("xy") 26 | 27 | assert !(VE.then("x") |> VE.match?("y")) 28 | end 29 | 30 | test "replacing" do 31 | assert VE.find("a") |> VE.replace("abcd", "") == "bcd" 32 | end 33 | end 34 | --------------------------------------------------------------------------------