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jshint multistr:true\n\n(function (w, d) {\n    'use strict';\n\n    var TABLE_NAME = 'hljs-ln',\n        LINE_NAME = 'hljs-ln-line',\n        CODE_BLOCK_NAME = 'hljs-ln-code',\n        NUMBERS_BLOCK_NAME = 'hljs-ln-numbers',\n        NUMBER_LINE_NAME = 'hljs-ln-n',\n        DATA_ATTR_NAME = 'data-line-number',\n        BREAK_LINE_REGEXP = /\\r\\n|\\r|\\n/g;\n\n    if (w.hljs) {\n        w.hljs.initLineNumbersOnLoad = initLineNumbersOnLoad;\n        w.hljs.lineNumbersBlock = lineNumbersBlock;\n        w.hljs.lineNumbersValue = lineNumbersValue;\n\n        addStyles();\n    } else {\n        w.console.error('highlight.js not detected!');\n    }\n\n    function isHljsLnCodeDescendant(domElt) {\n        var curElt = domElt;\n        while (curElt) {\n            if (curElt.className && curElt.className.indexOf('hljs-ln-code') !== -1) {\n                return true;\n            }\n            curElt = curElt.parentNode;\n        }\n        return false;\n    }\n\n    function getHljsLnTable(hljsLnDomElt) {\n        var curElt = hljsLnDomElt;\n        while (curElt.nodeName !== 'TABLE') {\n            curElt = curElt.parentNode;\n        }\n        return curElt;\n    }\n\n    // Function to workaround a copy issue with Microsoft Edge.\n    // Due to hljs-ln wrapping the lines of code inside a <table> element,\n    // itself wrapped inside a <pre> element, window.getSelection().toString()\n    // does not contain any line breaks. 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i < lastLineNumber ; ++i) {\n                var codeLineSel = format('.{0}[{1}=\"{2}\"]', [CODE_BLOCK_NAME, DATA_ATTR_NAME, i]);\n                var codeLineElt = hljsLnTable.querySelector(codeLineSel);\n                selectedText += '\\n' + codeLineElt.textContent;\n            }\n            selectedText += '\\n' + lastLineText;\n            return selectedText;\n        // single copied line case\n        } else {\n            return selectionText;\n        }\n    }\n\n    // ensure consistent code copy/paste behavior across all browsers\n    // (see https://github.com/wcoder/highlightjs-line-numbers.js/issues/51)\n    document.addEventListener('copy', function(e) {\n        // get current selection\n        var selection = window.getSelection();\n        // override behavior when one wants to copy line of codes\n        if (isHljsLnCodeDescendant(selection.anchorNode)) {\n            var selectionText;\n            // workaround an issue with Microsoft Edge as copied line breaks\n            // are removed otherwise from the selection string\n            if (window.navigator.userAgent.indexOf('Edge') !== -1) {\n                selectionText = edgeGetSelectedCodeLines(selection);\n            } else {\n                // other browsers can directly use the selection string\n                selectionText = selection.toString();\n            }\n            e.clipboardData.setData('text/plain', selectionText);\n            e.preventDefault();\n        }\n    });\n\n    function addStyles () {\n        var css = d.createElement('style');\n        css.type = 'text/css';\n        css.innerHTML = format(\n            '.{0}{border-collapse:collapse}' +\n            '.{0} td{padding:0}' +\n            '.{1}:before{content:attr({2})}',\n        [\n            TABLE_NAME,\n            NUMBER_LINE_NAME,\n            DATA_ATTR_NAME\n        ]);\n        d.getElementsByTagName('head')[0].appendChild(css);\n    }\n\n    function initLineNumbersOnLoad (options) {\n        if (d.readyState === 'interactive' || d.readyState === 'complete') {\n            documentReady(options);\n        } else {\n            w.addEventListener('DOMContentLoaded', function () {\n                documentReady(options);\n            });\n        }\n    }\n\n    function documentReady (options) {\n        try {\n            var blocks = d.querySelectorAll('code.hljs,code.nohighlight');\n\n            for (var i in blocks) {\n                if (blocks.hasOwnProperty(i)) {\n                    if (!isPluginDisabledForBlock(blocks[i])) {\n                        lineNumbersBlock(blocks[i], options);\n                    }\n                }\n            }\n        } catch (e) {\n            w.console.error('LineNumbers error: ', e);\n        }\n    }\n\n    function isPluginDisabledForBlock(element) {\n        return element.classList.contains('nohljsln');\n    }\n\n    function lineNumbersBlock (element, options) {\n        if (typeof element !== 'object') return;\n\n        async(function () {\n            element.innerHTML = lineNumbersInternal(element, options);\n        });\n    }\n\n    function lineNumbersValue (value, options) {\n        if (typeof value !== 'string') return;\n\n        var element = document.createElement('code')\n        element.innerHTML = value\n\n        return lineNumbersInternal(element, options);\n    }\n\n    function lineNumbersInternal (element, options) {\n\n        var internalOptions = mapOptions(element, options);\n\n        duplicateMultilineNodes(element);\n\n        return addLineNumbersBlockFor(element.innerHTML, internalOptions);\n    }\n\n    function addLineNumbersBlockFor (inputHtml, options) {\n        var lines = getLines(inputHtml);\n\n        // if last line contains only carriage return remove it\n        if (lines[lines.length-1].trim() === '') {\n            lines.pop();\n        }\n\n        if (lines.length > 1 || options.singleLine) {\n            var html = '';\n\n            for (var i = 0, l = lines.length; i < l; i++) {\n                html += format(\n                    '<tr>' +\n                        '<td class=\"{0} {1}\" {3}=\"{5}\">' +\n                            '<div class=\"{2}\" {3}=\"{5}\"></div>' +\n                        '</td>' +\n                        '<td class=\"{0} {4}\" {3}=\"{5}\">' +\n                            '{6}' +\n                        '</td>' +\n                    '</tr>',\n                [\n                    LINE_NAME,\n                    NUMBERS_BLOCK_NAME,\n                    NUMBER_LINE_NAME,\n                    DATA_ATTR_NAME,\n                    CODE_BLOCK_NAME,\n                    i + options.startFrom,\n                    lines[i].length > 0 ? lines[i] : ' '\n                ]);\n            }\n\n            return format('<table class=\"{0}\">{1}</table>', [ TABLE_NAME, html ]);\n        }\n\n        return inputHtml;\n    }\n\n    /**\n     * @param {HTMLElement} element Code block.\n     * @param {Object} options External API options.\n     * @returns {Object} Internal API options.\n     */\n    function mapOptions (element, options) {\n        options = options || {};\n        return {\n            singleLine: getSingleLineOption(options),\n            startFrom: getStartFromOption(element, options)\n        };\n    }\n\n    function getSingleLineOption (options) {\n        var defaultValue = false;\n        if (!!options.singleLine) {\n            return options.singleLine;\n        }\n        return defaultValue;\n    }\n\n    function getStartFromOption (element, options) {\n        var defaultValue = 1;\n        var startFrom = defaultValue;\n\n        if (isFinite(options.startFrom)) {\n            startFrom = options.startFrom;\n        }\n\n        // can be overridden because local option is priority\n        var value = getAttribute(element, 'data-ln-start-from');\n        if (value !== null) {\n            startFrom = toNumber(value, defaultValue);\n        }\n\n        return startFrom;\n    }\n\n    /**\n     * Recursive method for fix multi-line elements implementation in highlight.js\n     * Doing deep passage on child nodes.\n     * @param {HTMLElement} element\n     */\n    function duplicateMultilineNodes (element) {\n        var nodes = element.childNodes;\n        for (var node in nodes) {\n            if (nodes.hasOwnProperty(node)) {\n                var child = nodes[node];\n                if (getLinesCount(child.textContent) > 0) {\n                    if (child.childNodes.length > 0) {\n                        duplicateMultilineNodes(child);\n                    } else {\n                        duplicateMultilineNode(child.parentNode);\n                    }\n                }\n            }\n        }\n    }\n\n    /**\n     * Method for fix multi-line elements implementation in highlight.js\n     * @param {HTMLElement} element\n     */\n    function duplicateMultilineNode (element) {\n        var className = element.className;\n\n        if ( ! /hljs-/.test(className)) return;\n\n        var lines = getLines(element.innerHTML);\n\n        for (var i = 0, result = ''; i < lines.length; i++) {\n            var lineText = lines[i].length > 0 ? lines[i] : ' ';\n            result += format('<span class=\"{0}\">{1}</span>\\n', [ className,  lineText ]);\n        }\n\n        element.innerHTML = result.trim();\n    }\n\n    function getLines (text) {\n        if (text.length === 0) return [];\n        return text.split(BREAK_LINE_REGEXP);\n    }\n\n    function getLinesCount (text) {\n        return (text.trim().match(BREAK_LINE_REGEXP) || []).length;\n    }\n\n    ///\n    /// HELPERS\n    ///\n\n    function async (func) {\n        w.setTimeout(func, 0);\n    }\n\n    /**\n     * {@link https://wcoder.github.io/notes/string-format-for-string-formating-in-javascript}\n     * @param {string} format\n     * @param {array} args\n     */\n    function format (format, args) {\n        return format.replace(/\\{(\\d+)\\}/g, function(m, n){\n            return args[n] !== undefined ? args[n] : m;\n        });\n    }\n\n    /**\n     * @param {HTMLElement} element Code block.\n     * @param {String} attrName Attribute name.\n     * @returns {String} Attribute value or empty.\n     */\n    function getAttribute (element, attrName) {\n        return element.hasAttribute(attrName) ? element.getAttribute(attrName) : null;\n    }\n\n    /**\n     * @param {String} str Source string.\n     * @param {Number} fallback Fallback value.\n     * @returns Parsed number or fallback value.\n     */\n    function toNumber (str, fallback) {\n        if (!str) return fallback;\n        var number = Number(str);\n        return isFinite(number) ? number : fallback;\n    }\n\n}(window, document));\n"],"names":["w","d","css","TABLE_NAME","LINE_NAME","CODE_BLOCK_NAME","NUMBERS_BLOCK_NAME","NUMBER_LINE_NAME","DATA_ATTR_NAME","BREAK_LINE_REGEXP","documentReady","options","blocks","querySelectorAll","i","hasOwnProperty","classList","contains","lineNumbersBlock","e","console","error","element","func","innerHTML","lineNumbersInternal","setTimeout","internalOptions","singleLine","getSingleLineOption","startFrom","getStartFromOption","mapOptions","duplicateMultilineNodes","inputHtml","lines","getLines","length","trim","pop","html","l","format","addLineNumbersBlockFor","isFinite","value","attrName","hasAttribute","getAttribute","str","fallback","number","Number","toNumber","nodes","childNodes","node","child","textContent","match","duplicateMultilineNode","parentNode","className","test","result","text","split","args","replace","m","n","undefined","hljs","initLineNumbersOnLoad","readyState","addEventListener","lineNumbersValue","document","createElement","type","getElementsByTagName","appendChild","selectionText","selection","window","getSelection","domElt","curElt","indexOf","isHljsLnCodeDescendant","anchorNode","navigator","userAgent","toString","tdAnchor","nodeName","tdFocus","focusNode","firstLineNumber","parseInt","dataset","lineNumber","lastLineNumber","firstLineText","lastLineText","tmp","slice","lastIndexOf","selectedText","hljsLnTable","hljsLnDomElt","getHljsLnTable","codeLineSel","querySelector","edgeGetSelectedCodeLines","clipboardData","setData","preventDefault"],"sourceRoot":""}