1 files changed, 68 insertions, 0 deletions
diff --git a/tools/eslint/lib/formatters/checkstyle.js b/tools/eslint/lib/formatters/checkstyle.js
new file mode 100644
index 0000000000..5e98c8b131
--- /dev/null
+++ b/tools/eslint/lib/formatters/checkstyle.js
@@ -0,0 +1,68 @@
+/**
+ * @fileoverview CheckStyle XML reporter
+ * @author Ian Christian Myers
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helper Functions
+//------------------------------------------------------------------------------
+
+function getMessageType(message) {
+    if (message.fatal || message.severity === 2) {
+        return "error";
+    } else {
+        return "warning";
+    }
+}
+
+function xmlEscape(s) {
+    return ("" + s).replace(/[<>&"']/g, function(c) {
+        switch (c) {
+            case "<":
+                return "&lt;";
+            case ">":
+                return "&gt;";
+            case "&":
+                return "&amp;";
+            case "\"":
+                return "&quot;";
+            case "'":
+                return "&apos;";
+            // no default
+        }
+    });
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+
+    var output = "";
+
+    output += "<?xml version=\"1.0\" encoding=\"utf-8\"?>";
+    output += "<checkstyle version=\"4.3\">";
+
+    results.forEach(function(result) {
+        var messages = result.messages;
+
+        output += "<file name=\"" + xmlEscape(result.filePath) + "\">";
+
+        messages.forEach(function(message) {
+            output += "<error line=\"" + xmlEscape(message.line) + "\" " +
+                "column=\"" + xmlEscape(message.column) + "\" " +
+                "severity=\"" + xmlEscape(getMessageType(message)) + "\" " +
+                "message=\"" + xmlEscape(message.message) +
+                (message.ruleId ? " (" + message.ruleId + ")" : "") + "\" />";
+        });
+
+        output += "</file>";
+
+    });
+
+    output += "</checkstyle>";
+
+    return output;
+};