Add support for ARFF (Fix #653) (#1327)

components.js

@@ -95,6 +95,10 @@ var components = {
 			"require": "cpp",
 			"owner": "eisbehr-"
 		},
+		"arff": {
+			"title": "ARFF",
+			"owner": "Golmote"
+		},
 		"asciidoc": {
 			"title": "AsciiDoc",
 			"owner": "Golmote"

components/prism-arff.js

@@ -0,0 +1,10 @@
+Prism.languages.arff = {
+	'comment': /%.*/,
+	'string': {
+		pattern: /(["'])(?:\\.|(?!\1)[^\\\r\n])*\1/,
+		greedy: true
+	},
+	'keyword': /@(?:attribute|data|end|relation)\b/i,
+	'number': /\b\d+(?:\.\d+)?\b/,
+	'punctuation': /[{},]/
+};

examples/prism-arff.html

@@ -0,0 +1,49 @@
+<h1>ARFF</h1>
+<p>To use this language, use the class "language-arff".</p>
+
+<h2>Comments</h2>
+<pre><code>%
+% Some comments
+%
+%</code></pre>
+
+<h2>Keywords</h2>
+<pre><code>@attribute
+@data
+@relation</code></pre>
+
+<h2>Numbers</h2>
+<pre><code>42
+0.14</code></pre>
+
+<h2>Strings</h2>
+<pre><code>'Single \'quoted\' string'
+"Double \"quoted\" string"</code></pre>
+
+<h2>Full example</h2>
+<pre><code>% 1. Title: Iris Plants Database
+%
+% 2. Sources:
+%      (a) Creator: R.A. Fisher
+%      (b) Donor: Michael Marshall (MARSHALL%PLU@io.arc.nasa.gov)
+%      (c) Date: July, 1988
+%
+@RELATION iris
+
+@ATTRIBUTE sepallength  NUMERIC
+@ATTRIBUTE sepalwidth   NUMERIC
+@ATTRIBUTE petallength  NUMERIC
+@ATTRIBUTE petalwidth   NUMERIC
+@ATTRIBUTE class        {Iris-setosa,Iris-versicolor,Iris-virginica}
+
+@DATA
+5.1,3.5,1.4,0.2,Iris-setosa
+4.9,3.0,1.4,0.2,Iris-setosa
+4.7,3.2,1.3,0.2,Iris-setosa
+4.6,3.1,1.5,0.2,Iris-setosa
+5.0,3.6,1.4,0.2,Iris-setosa
+5.4,3.9,1.7,0.4,Iris-setosa
+4.6,3.4,1.4,0.3,Iris-setosa
+5.0,3.4,1.5,0.2,Iris-setosa
+4.4,2.9,1.4,0.2,Iris-setosa
+4.9,3.1,1.5,0.1,Iris-setosa</code></pre>

plugins/show-language/prism-show-language.js

@@ -11,7 +11,7 @@ if (!Prism.plugins.toolbar) {
 }
 
 // The languages map is built automatically with gulp
-var Languages = /*languages_placeholder[*/{"html":"HTML","xml":"XML","svg":"SVG","mathml":"MathML","css":"CSS","clike":"C-like","javascript":"JavaScript","abap":"ABAP","actionscript":"ActionScript","apacheconf":"Apache Configuration","apl":"APL","applescript":"AppleScript","asciidoc":"AsciiDoc","asm6502":"6502 Assembly","aspnet":"ASP.NET (C#)","autohotkey":"AutoHotkey","autoit":"AutoIt","basic":"BASIC","csharp":"C#","cpp":"C++","coffeescript":"CoffeeScript","csp":"Content-Security-Policy","css-extras":"CSS Extras","django":"Django/Jinja2","fsharp":"F#","glsl":"GLSL","graphql":"GraphQL","http":"HTTP","hpkp":"HTTP Public-Key-Pins","hsts":"HTTP Strict-Transport-Security","ichigojam":"IchigoJam","inform7":"Inform 7","json":"JSON","latex":"LaTeX","livescript":"LiveScript","lolcode":"LOLCODE","matlab":"MATLAB","mel":"MEL","n4js":"N4JS","nasm":"NASM","nginx":"nginx","nsis":"NSIS","objectivec":"Objective-C","ocaml":"OCaml","opencl":"OpenCL","parigp":"PARI/GP","php":"PHP","php-extras":"PHP Extras","powershell":"PowerShell","properties":".properties","protobuf":"Protocol Buffers","jsx":"React JSX","tsx":"React TSX","renpy":"Ren'py","rest":"reST (reStructuredText)","sas":"SAS","sass":"Sass (Sass)","scss":"Sass (Scss)","sql":"SQL","typescript":"TypeScript","vbnet":"VB.Net","vhdl":"VHDL","vim":"vim","wiki":"Wiki markup","xojo":"Xojo (REALbasic)","yaml":"YAML"}/*]*/;
+var Languages = /*languages_placeholder[*/{"html":"HTML","xml":"XML","svg":"SVG","mathml":"MathML","css":"CSS","clike":"C-like","javascript":"JavaScript","abap":"ABAP","actionscript":"ActionScript","apacheconf":"Apache Configuration","apl":"APL","applescript":"AppleScript","arff":"ARFF","asciidoc":"AsciiDoc","asm6502":"6502 Assembly","aspnet":"ASP.NET (C#)","autohotkey":"AutoHotkey","autoit":"AutoIt","basic":"BASIC","csharp":"C#","cpp":"C++","coffeescript":"CoffeeScript","csp":"Content-Security-Policy","css-extras":"CSS Extras","django":"Django/Jinja2","fsharp":"F#","glsl":"GLSL","graphql":"GraphQL","http":"HTTP","hpkp":"HTTP Public-Key-Pins","hsts":"HTTP Strict-Transport-Security","ichigojam":"IchigoJam","inform7":"Inform 7","json":"JSON","latex":"LaTeX","livescript":"LiveScript","lolcode":"LOLCODE","matlab":"MATLAB","mel":"MEL","n4js":"N4JS","nasm":"NASM","nginx":"nginx","nsis":"NSIS","objectivec":"Objective-C","ocaml":"OCaml","opencl":"OpenCL","parigp":"PARI/GP","php":"PHP","php-extras":"PHP Extras","powershell":"PowerShell","properties":".properties","protobuf":"Protocol Buffers","jsx":"React JSX","tsx":"React TSX","renpy":"Ren'py","rest":"reST (reStructuredText)","sas":"SAS","sass":"Sass (Sass)","scss":"Sass (Scss)","sql":"SQL","typescript":"TypeScript","vbnet":"VB.Net","vhdl":"VHDL","vim":"vim","wiki":"Wiki markup","xojo":"Xojo (REALbasic)","yaml":"YAML"}/*]*/;
 Prism.plugins.toolbar.registerButton('show-language', function(env) {
 	var pre = env.element.parentNode;
 	if (!pre || !/pre/i.test(pre.nodeName)) {

tests/languages/arff/comment_feature.test

@@ -0,0 +1,15 @@
+%
+% Some comment
+% Comment " with ' quotes
+
+----------------------------------------------------
+
+[
+	["comment", "%"],
+	["comment", "% Some comment"],
+	["comment", "% Comment \" with ' quotes"]
+]
+
+----------------------------------------------------
+
+Checks for comments.

tests/languages/arff/keyword_feature.test

@@ -0,0 +1,17 @@
+@attribute
+@data
+@end
+@relation
+
+----------------------------------------------------
+
+[
+	["keyword", "@attribute"],
+	["keyword", "@data"],
+	["keyword", "@end"],
+	["keyword", "@relation"]
+]
+
+----------------------------------------------------
+
+Checks for all keywords.

tests/languages/arff/number_feature.test

@@ -0,0 +1,13 @@
+42
+0.14
+
+----------------------------------------------------
+
+[
+	["number", "42"],
+	["number", "0.14"]
+]
+
+----------------------------------------------------
+
+Checks for numbers.

tests/languages/arff/string_feature.test

@@ -0,0 +1,13 @@
+"double quoted\"' % string"
+'single quoted"\' % string'
+
+----------------------------------------------------
+
+[
+	["string", "\"double quoted\\\"' % string\""],
+	["string", "'single quoted\"\\' % string'"]
+]
+
+----------------------------------------------------
+
+Checks for strings.