gulp-jshint-xml-file-reporter/lib/junit_emitter.js

A JSHint reporter to be used with gulp-jshint that will provide XML (i.e. checkstyle and junit), that can be used by CI tools such as jenkins

'use strict';

exports.getHeader = function (results) {
    var numberOfFailures = 0,
        out = [];

    results = results || [];
    results.forEach(function (item) {
        var numberOfErrors = item.length || 1;
        numberOfFailures += parseInt(numberOfErrors, 10);
    });

    out.push('<?xml version="1.0" encoding="utf-8"?>');
    out.push('<testsuite name="jshint" failures="' + numberOfFailures + '">');
    // we need at least 1 empty test case if there are no errors
    if (!results.length) {
        out.push('\t<testcase name="Empty"/>');
    }
    return out.join('\n');
};

exports.getFooter = function () {
    return '\n</testsuite>\n';
};

/**
 * Encode chars
 * @param  {String} s
 * @return {String}
 */
function encode(s) {
    var pairs = {
        '&': '&amp;',
        '"': '&quot;',
        '\'': '&apos;',
        '<': '&lt;',
        '>': '&gt;'
    };

    for (var r in pairs) {
        if (typeof s !== 'undefined') {
            s = s.replace(new RegExp(r, 'g'), pairs[r]);
        }
    }

    return s || '';
}

function failureMessage(failures) {
    var count = failures.length,
        message = '';

    if (count === 1) {
        message = '1 JSHINT Failure';
    } else {
        message = count + ' JSHint Failures';
    }

    return message;
}

function failureDetails(failures) {
    var msg = [],
        item;

    for (var i = 0; i < failures.length; i++) {
        item = failures[i];
        msg.push('\t\t\t' + (i + 1) + '. line ' + item.line + ', char ' + item.character + ': ' + encode(item.reason));
    }

    return msg.join('\n');
}

exports.formatContent = function (results) {
    var out = [],
        files = {};

    results.forEach(function (result) {
        result.file = result.file.replace(/^\.\//, '');
        if (!files[result.file]) {
            files[result.file] = [];
        }
        files[result.file].push(result.error);
    });

    for (var file in files) {
        out.push('\n\t<testcase name="' + file + '">');
        out.push('\t\t<failure message="' + failureMessage(files[file]) + '">');
        out.push(failureDetails(files[file]));
        out.push('\t\t</failure>');
        out.push('\t</testcase>');
    }

    return out.join('\n');
};