--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/doclint/DocLintTester.java	Mon Dec 17 07:47:05 2012 -0800
@@ -0,0 +1,135 @@
+/*
+ * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+
+import com.sun.tools.doclint.DocLint;
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.io.Reader;
+import java.io.StringWriter;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+
+public class DocLintTester {
+
+    public static void main(String... args) throws Exception {
+        new DocLintTester().run(args);
+    }
+
+    public void run(String... args) throws Exception {
+        String testSrc = System.getProperty("test.src");
+
+        File refFile = null;
+        List<String> opts = new ArrayList<String>();
+        List<File> files = new ArrayList<File>();
+        for (int i = 0; i < args.length; i++) {
+            String arg = args[i];
+            if (arg.equals("-ref")) {
+                refFile = new File(testSrc, args[++i]);
+            } else if (arg.startsWith("-Xmsgs")) {
+                opts.add(arg);
+            } else
+                files.add(new File(testSrc, arg));
+        }
+
+        check(opts, files, refFile);
+
+        if (errors > 0)
+            throw new Exception(errors + " errors occurred");
+    }
+
+    void check(List<String> opts, List<File> files, File refFile) throws Exception {
+        List<String> args = new ArrayList<String>();
+        args.addAll(opts);
+        for (File file: files)
+            args.add(file.getPath());
+
+        StringWriter sw = new StringWriter();
+        PrintWriter pw = new PrintWriter(sw);
+        new DocLint().run(pw, args.toArray(new String[args.size()]));
+        pw.flush();
+        String out = normalizeNewlines(removeFileNames(sw.toString())).trim();
+        if (out != null)
+            System.err.println("Output:\n" + out);
+
+        if (refFile == null) {
+            if (!out.isEmpty())
+                error("unexpected output");
+        } else {
+            String expect = readFile(refFile);
+            if (!expect.equals(out)) {
+                error("expected output not found");
+                System.err.println("EXPECT>>" + expect + "<<");
+                System.err.println(" FOUND>>" + out    + "<<");
+            }
+        }
+    }
+
+    String readFile(File file) throws IOException {
+        StringBuilder sb = new StringBuilder();
+        Reader in = new BufferedReader(new FileReader(file));
+        try {
+            char[] buf = new char[1024];
+            int n;
+            while ((n = in.read(buf)) != -1)
+                sb.append(buf, 0, n);
+        } finally {
+            in.close();
+        }
+        return sb.toString().trim();
+    }
+
+    private static final Pattern dirFileLine = Pattern.compile(
+            "(?m)"                          // multi-line mode
+            + "^([^: ]+?)"                  // directory part of file name
+            + "([A-Za-z0-9.]+:[0-9]+:)");   // file name and line number
+
+    String removeFileNames(String s) {
+        Matcher m = dirFileLine.matcher(s);
+        StringBuffer sb = new StringBuffer();
+        while (m.find()) {
+            m.appendReplacement(sb, "$2");
+        }
+        m.appendTail(sb);
+        return sb.toString();
+    }
+
+    private static final String nl = System.getProperty("line.separator");
+    String normalizeNewlines(String s) {
+        return (nl.equals("\n") ? s : s.replace(nl, "\n"));
+    }
+
+
+    void error(String msg) {
+        System.err.println("Error: " + msg);
+        errors++;
+    }
+
+    int errors;
+}