--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/com/go/trove/io/LinePositionReader.java	Sat Mar 21 11:00:06 2009 +0000
@@ -0,0 +1,165 @@
+/* ====================================================================
+ * Trove - Copyright (c) 1997-2000 Walt Disney Internet Group
+ * ====================================================================
+ * The Tea Software License, Version 1.1
+ *
+ * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. The end-user documentation included with the redistribution,
+ *    if any, must include the following acknowledgment:
+ *       "This product includes software developed by the
+ *        Walt Disney Internet Group (http://opensource.go.com/)."
+ *    Alternately, this acknowledgment may appear in the software itself,
+ *    if and wherever such third-party acknowledgments normally appear.
+ *
+ * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must
+ *    not be used to endorse or promote products derived from this
+ *    software without prior written permission. For written
+ *    permission, please contact opensource@dig.com.
+ *
+ * 5. Products derived from this software may not be called "Tea",
+ *    "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet",
+ *    "Kettle", "Trove" or "BeanDoc" appear in their name, without prior
+ *    written permission of the Walt Disney Internet Group.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE WALT DISNEY INTERNET GROUP OR ITS
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * For more information about Tea, please see http://opensource.go.com/.
+ */
+
+package com.go.trove.io;
+
+import java.io.*;
+
+/******************************************************************************
+ * LinePositionReader aids in printing line numbers for error reporting. 
+ *
+ * @author Brian S O'Neill
+ * @version
+ * <!--$$Revision: 1.1 $-->, <!--$$JustDate:--> 12/11/00 <!-- $-->
+ */
+public class LinePositionReader extends PositionReader {
+    private int mLineNumber = 1;
+    private int mPushback = -1;
+
+    public LinePositionReader(Reader reader) {
+        super(reader);
+    }
+
+    public int read() throws IOException {
+        int c;
+
+        if (mPushback >= 0) {
+            c = mPushback;
+            mPushback = -1;
+        }
+        else {
+            c = super.read();
+        }
+
+        if (c == '\n') {
+            mLineNumber++;
+        }
+        else if (c == '\r') {
+            int peek = super.read();
+            if (peek != '\n') {
+                mLineNumber++;
+            }
+            mPushback = peek;
+        }
+
+        return c;
+    }
+
+    /**
+     * After calling readLine, calling getLineNumber returns the next line
+     * number.
+     */
+    public String readLine() throws IOException {
+        StringBuffer buf = new StringBuffer(80);
+        int line = mLineNumber;
+        int c;
+        while (line == mLineNumber && (c = read()) >= 0) {
+            buf.append((char)c);
+        }
+        return buf.toString();
+    }
+
+    /**
+     * Skips forward into the stream to the line number specified. The line
+     * can then be read by calling readLine. Calling getPosition
+     * returns the position that the line begins.
+     *
+     * @return the line number reached
+     */
+    public int skipForwardToLine(int line) throws IOException {
+        while (mLineNumber < line && read() >= 0) {}
+        return mLineNumber;
+    }
+
+    /**
+     * @return the number of the line currently being read or the next one
+     * available.
+     */
+    public int getLineNumber() {
+        return mLineNumber;
+    }
+
+    /**
+     * Converts all whitespace characters in a String to space characters
+     * (\u0020).
+     */
+    public static String cleanWhitespace(String str) {
+        int length = str.length();
+
+        StringBuffer buf = new StringBuffer(length);
+        for (int i=0; i<length; i++) {
+            char c = str.charAt(i);
+            if (Character.isWhitespace(c)) {
+                buf.append(' ');
+            }
+            else {
+                buf.append(c);
+            }
+        }
+
+        return buf.toString();
+    }
+
+    /**
+     * Creates and returns a String containing a sequence of the specified
+     * length, repeating the given character.
+     */
+    public static String createSequence(char c, int length) {
+        if (length < 0) length = 1;
+
+        StringBuffer buf = new StringBuffer(length);
+        for (; length > 0; length--) {
+            buf.append(c);
+        }
+        return buf.toString();
+    }
+}