more classpath progress

classpath/java/io/LineNumberReader.java

@@ -0,0 +1,31 @@
+package java.io;
+
+public class LineNumberReader extends BufferedReader {
+  private int line;
+
+  public LineNumberReader(Reader in, int bufferSize) {
+    super(in, bufferSize);
+  }
+
+  protected LineNumberReader(Reader in) {
+    super(in);
+  }
+
+  public int getLineNumber() {
+    return line;
+  }
+
+  public void setLineNumber(int v) {
+    line = v;
+  }
+  
+  public int read(char[] b, int offset, int length) throws IOException {
+    int c = super.read(b, offset, length);
+    for (int i = 0; i < c; ++i) {
+      if (b[i] == '\n') {
+        ++ line;
+      }
+    }
+    return c;
+  }
+}