--- /dev/null
+/**
+ * @fileoverview CheckStyle XML reporter
+ * @author Ian Christian Myers
+ */
+"use strict";
+
+const xmlEscape = require("../xml-escape");
+
+//------------------------------------------------------------------------------
+// Helper Functions
+//------------------------------------------------------------------------------
+
+/**
+ * Returns the severity of warning or error
+ * @param {Object} message message object to examine
+ * @returns {string} severity level
+ * @private
+ */
+function getMessageType(message) {
+ if (message.fatal || message.severity === 2) {
+ return "error";
+ }
+ return "warning";
+
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+
+ let output = "";
+
+ output += "<?xml version=\"1.0\" encoding=\"utf-8\"?>";
+ output += "<checkstyle version=\"4.3\">";
+
+ results.forEach(result => {
+ const messages = result.messages;
+
+ output += `<file name="${xmlEscape(result.filePath)}">`;
+
+ messages.forEach(message => {
+ output += [
+ `<error line="${xmlEscape(message.line || 0)}"`,
+ `column="${xmlEscape(message.column || 0)}"`,
+ `severity="${xmlEscape(getMessageType(message))}"`,
+ `message="${xmlEscape(message.message)}${message.ruleId ? ` (${message.ruleId})` : ""}"`,
+ `source="${message.ruleId ? xmlEscape(`eslint.rules.${message.ruleId}`) : ""}" />`
+ ].join(" ");
+ });
+
+ output += "</file>";
+
+ });
+
+ output += "</checkstyle>";
+
+ return output;
+};