prism-show-language.js

(function(){

if (typeof self === 'undefined' || !self.Prism || !self.document) {
	return;
}

if (!Prism.plugins.toolbar) {
	console.warn('Show Languages plugin loaded before Toolbar plugin.');

	return;
}

// 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","js":"JavaScript","abap":"ABAP","abnf":"Augmented Backus–Naur form","apacheconf":"Apache Configuration","apl":"APL","arff":"ARFF","asciidoc":"AsciiDoc","adoc":"AsciiDoc","asm6502":"6502 Assembly","aspnet":"ASP.NET (C#)","autohotkey":"AutoHotkey","autoit":"AutoIt","shell":"Bash","basic":"BASIC","bnf":"Backus–Naur form","rbnf":"Routing Backus–Naur form","csharp":"C#","dotnet":"C#","cpp":"C++","cil":"CIL","coffee":"CoffeeScript","cmake":"CMake","csp":"Content-Security-Policy","css-extras":"CSS Extras","django":"Django/Jinja2","jinja2":"Django/Jinja2","dockerfile":"Docker","ebnf":"Extended Backus–Naur form","ejs":"EJS","erb":"ERB","fsharp":"F#","gcode":"G-code","gedcom":"GEDCOM","glsl":"GLSL","gml":"GameMaker Language","gamemakerlanguage":"GameMaker Language","graphql":"GraphQL","hs":"Haskell","hcl":"HCL","http":"HTTP","hpkp":"HTTP Public-Key-Pins","hsts":"HTTP Strict-Transport-Security","ichigojam":"IchigoJam","iecst":"Structured Text (IEC 61131-3)","inform7":"Inform 7","javadoc":"JavaDoc","javadoclike":"JavaDoc-like","javastacktrace":"Java stack trace","jsdoc":"JSDoc","js-extras":"JS Extras","json":"JSON","jsonp":"JSONP","json5":"JSON5","latex":"LaTeX","tex":"TeX","context":"ConTeXt","emacs":"Lisp","elisp":"Lisp","emacs-lisp":"Lisp","lolcode":"LOLCODE","md":"Markdown","markup-templating":"Markup templating","matlab":"MATLAB","mel":"MEL","n1ql":"N1QL","n4js":"N4JS","n4jsd":"N4JS","nand2tetris-hdl":"Nand To Tetris HDL","nasm":"NASM","nginx":"nginx","nsis":"NSIS","objectivec":"Objective-C","ocaml":"OCaml","opencl":"OpenCL","parigp":"PARI/GP","objectpascal":"Object Pascal","php":"PHP","phpdoc":"PHPDoc","php-extras":"PHP Extras","plsql":"PL/SQL","powershell":"PowerShell","properties":".properties","protobuf":"Protocol Buffers","py":"Python","q":"Q (kdb+ database)","jsx":"React JSX","tsx":"React TSX","renpy":"Ren'py","rest":"reST (reStructuredText)","rb":"Ruby","sas":"SAS","sass":"Sass (Sass)","scss":"Sass (Scss)","sql":"SQL","soy":"Soy (Closure Template)","tap":"TAP","toml":"TOML","tt2":"Template Toolkit 2","ts":"TypeScript","t4-cs":"T4 Text Templates (C#)","t4":"T4 Text Templates (C#)","t4-vb":"T4 Text Templates (VB)","t4-templating":"T4 templating","vbnet":"VB.Net","vhdl":"VHDL","vim":"vim","visual-basic":"Visual Basic","vb":"Visual Basic","wasm":"WebAssembly","wiki":"Wiki markup","xeoracube":"XeoraCube","xojo":"Xojo (REALbasic)","xquery":"XQuery","yaml":"YAML","yml":"YAML"}/*]*/;

Prism.plugins.toolbar.registerButton('show-language', function(env) {
	var pre = env.element.parentNode;
	if (!pre || !/pre/i.test(pre.nodeName)) {
		return;
	}

	/**
	 * Tries to guess the name of a language given its id.
	 *
	 * @param {string} id The language id.
	 * @returns {string}
	 */
	function guessTitle(id) {
		if (!id) {
			return id;
		}
		return (id.substring(0, 1).toUpperCase() + id.substring(1)).replace(/s(?=cript)/, 'S');
	}

	var language = pre.getAttribute('data-language') || Languages[env.language] || guessTitle(env.language);

	if(!language) {
		return;
	}
	var element = document.createElement('span');
	element.textContent = language;

	return element;
});

})();