--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/make/tools/propertiesparser/parser/MessageFile.java	Thu Jan 08 14:43:05 2015 +0000
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2010, 2014, 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.
+ */
+package propertiesparser.parser;
+
+import java.io.*;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.*;
+
+/**
+ * Class to facilitate manipulating compiler.properties.
+ */
+public class MessageFile {
+
+    MessageLine firstLine;
+    public Map<String, Message> messages = new TreeMap<>();
+    public File file;
+    public String keyPrefix;
+
+    public MessageFile(File file, String keyPrefix) throws IOException {
+        this.file = file;
+        this.keyPrefix = keyPrefix;
+        read(file);
+    }
+
+    final void read(File in) throws IOException {
+        MessageLine currLine = null;
+        for (String line : Files.readAllLines(in.toPath())) {
+            if (currLine == null)
+                firstLine = currLine = new MessageLine(line);
+            else
+                currLine = currLine.append(line);
+            if (line.startsWith(keyPrefix + ".")) {
+                int eq = line.indexOf("=");
+                if (eq > 0)
+                    messages.put(line.substring(0, eq), new Message(currLine));
+            }
+        }
+    }
+}