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/**
 * @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.
 * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
 */

/**
 * @fileOverview Rich code snippets for CKEditor using GeSHi syntax highlighter (http://qbnz.com/highlighter/).
 */

'use strict';

( function() {
	CKEDITOR.plugins.add( 'codesnippetgeshi', {
		requires: 'ajax,codesnippet',

		init: function( editor ) {
			var writer = new CKEDITOR.htmlParser.basicWriter(),
				geSHiHighlighter = new CKEDITOR.plugins.codesnippet.highlighter( {
					languages: languages,
					highlighter: function( code, language, callback ) {
						// AJAX data to be sent in the request.
						var requestConfig = JSON.stringify( {
							lang: language,
							html: code
						} );

						// We need to pass an empty string if config.codesnippet is not defined,
						// because CKEDITOR#getUrl expects a String.
						CKEDITOR.ajax.post( CKEDITOR.getUrl( editor.config.codeSnippetGeshi_url || '' ), requestConfig, 'application/json', function( highlighted ) {
							// If no response is given it means that we have i.e. 404, so we'll set
							// empty content.
							if ( !highlighted ) {
								callback( '' );
								return;
							}

							var fragment = CKEDITOR.htmlParser.fragment.fromHtml( highlighted || '' );

							// GeSHi returns <pre> as a top-most element. Since <pre> is
							// already a part of the widget, consider children only.
							fragment.children[ 0 ].writeChildrenHtml( writer );

							// Return highlighted code.
							callback( writer.getHtml( true ) );
						} );
					}
				} );

			editor.plugins.codesnippet.setHighlighter( geSHiHighlighter );
		}
	} );

	// A list of default languages supported by GeSHi.
	var languages = {
		abap: 'ABAP',
		actionscript: 'ActionScript',
		ada: 'Ada',
		apache: 'Apache Configuration',
		applescript: 'AppleScript',
		asm: 'Assembly',
		asp: 'Active Server Pages (ASP)',
		autoit: 'AutoIt',
		bash: 'Bash',
		basic4gl: 'Basic4GL',
		bf: 'Brainfuck',
		blitzbasic: 'Blitz BASIC',
		bnf: 'Backus-Naur Form',
		c: 'C',
		c_mac: 'C (Mac)',
		caddcl: 'AutoCAD DCL',
		cadlisp: 'AutoLISP',
		cfdg: 'CFDG',
		cfm: 'ColdFusion Markup Language',
		cil: 'Common Intermediate Language (CIL)',
		cobol: 'COBOL',
		'cpp-qt': 'C++ (Qt toolkit)',
		cpp: 'C++',
		csharp: 'C#',
		css: 'Cascading Style Sheets (CSS)',
		d: 'D',
		delphi: 'Delphi',
		diff: 'Diff',
		div: 'DIV',
		dos: 'DOS batch file',
		dot: 'DOT',
		eiffel: 'Eiffel',
		fortran: 'Fortran',
		freebasic: 'FreeBASIC',
		gambas: 'Gambas',
		genero: 'Genero',
		gettext: 'GNU internationalization (i18n) library',
		glsl: 'OpenGL Shading Language (GLSL)',
		gml: 'Game Maker Language (GML)',
		gnuplot: 'gnuplot',
		groovy: 'Groovy',
		haskell: 'Haskell',
		hq9plus: 'HQ9+',
		html4strict: 'HTML',
		html5: 'HTML5',
		idl: 'Uno IDL',
		ini: 'INI',
		inno: 'Inno',
		intercal: 'INTERCAL',
		io: 'Io',
		java: 'Java',
		java5: 'Java(TM) 2 Platform Standard Edition 5.0',
		javascript: 'JavaScript',
		kixtart: 'KiXtart',
		klonec: 'Klone C',
		klonecpp: 'Klone C++',
		latex: 'LaTeX',
		lisp: 'Lisp',
		lolcode: 'LOLCODE',
		lotusscript: 'LotusScript',
		lua: 'Lua',
		Code: 'Language',
		m68k: 'Motorola 68000 Assembler',
		make: 'make',
		matlab: 'MATLAB M',
		mirc: 'mIRC scripting language',
		mxml: 'MXML',
		mpasm: 'Microchip Assembler',
		mysql: 'MySQL',
		nsis: 'Nullsoft Scriptable Install System (NSIS)',
		objc: 'Objective-C',
		'ocaml-brief': 'OCaml',
		ocaml: 'OCaml',
		oobas: 'OpenOffice.org Basic',
		oracle8: 'Oracle 8 SQL',
		oracle11: 'Oracle 11 SQL',
		pascal: 'Pascal',
		per: 'per',
		perl: 'Perl',
		'php-brief': 'PHP',
		php: 'PHP',
		pixelbender: 'Pixel Bender',
		plsql: 'PL/SQL',
		povray: 'Persistence of Vision Raytracer',
		powershell: 'Windows PowerShell',
		progress: 'OpenEdge Advanced Business Language',
		prolog: 'Prolog',
		providex: 'ProvideX',
		python: 'Python',
		qbasic: 'QBasic/QuickBASIC',
		rails: 'Rails',
		reg: 'Windows Registry',
		robots: 'robots.txt',
		rsplus: 'R',
		ruby: 'Ruby',
		sas: 'SAS',
		scala: 'Scala',
		scheme: 'Scheme',
		scilab: 'Scilab',
		sdlbasic: 'SdlBasic',
		smalltalk: 'Smalltalk',
		smarty: 'Smarty',
		sql: 'SQL',
		tcl: 'Tcl',
		teraterm: 'Tera Term',
		text: 'Plain text',
		thinbasic: 'thinBasic',
		tsql: 'Transact-SQL',
		typoscript: 'TypoScript',
		vala: 'Vala',
		vb: 'Visual Basic',
		vbnet: 'Visual Basic .NET',
		verilog: 'Verilog',
		vhdl: 'VHDL',
		vim: 'Vimscript',
		visualfoxpro: 'Visual FoxPro',
		visualprolog: 'Visual Prolog',
		whitespace: 'Whitespace',
		winbatch: 'Winbatch',
		xml: 'XML',
		xorg_conf: 'Xorg.conf',
		xpp: 'X++',
		z80: 'ZiLOG Z80 Assembler'
	};
} )();

/**
 * Sets GeSHi URL which, once queried with Ajax, will return highlighted code.
 *
 * Check the {@glink features/codesnippetgeshi Code Snippet GeSHi documentation} for
 * more information.
 *
 *		config.codeSnippetGeshi_url = 'http:\/\/example.com\/geshi\/colorize.php';
 *
 * @cfg {String} [codeSnippetGeshi_url=null]
 * @member CKEDITOR.config
 */