Introduce mbox support

[gpl/argeo-slc.git] / ext / javax.mail.mbox / src / com / sun / mail / mbox / LineCounter.java

diff --git a/ext/javax.mail.mbox/src/com/sun/mail/mbox/LineCounter.java b/ext/javax.mail.mbox/src/com/sun/mail/mbox/LineCounter.java
new file mode 100644 (file)
index 0000000..1ae4084
--- /dev/null
+++ b/ext/javax.mail.mbox/src/com/sun/mail/mbox/LineCounter.java
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0, which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * This Source Code may also be made available under the following Secondary
+ * Licenses when the conditions for such availability set forth in the
+ * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
+ * version 2 with the GNU Classpath Exception, which is available at
+ * https://www.gnu.org/software/classpath/license.html.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
+ */
+
+package com.sun.mail.mbox;
+
+import java.io.*;
+
+/**
+ * Count number of lines output.
+ */
+class LineCounter extends FilterOutputStream {
+    private int lastb = -1;
+    protected int lineCount;
+
+    public LineCounter(OutputStream os) {
+       super(os);
+    }
+
+    public void write(int b) throws IOException {
+       // If we have a full line, count it.
+       if (b == '\r' || (b == '\n' && lastb != '\r'))
+           lineCount++;
+       out.write(b);
+       lastb = b;
+    }
+
+    public void write(byte[] b) throws IOException {
+       write(b, 0, b.length);
+    }
+
+    public void write(byte[] b, int off, int len) throws IOException {
+       for (int i = 0 ; i < len ; i++) {
+           write(b[off + i]);
+       }
+    }
+
+    public int getLineCount() {
+       return lineCount;
+    }
+
+    // for testing
+    public static void main(String argv[]) throws Exception {
+       int b;
+       LineCounter os =
+           new LineCounter(System.out);
+       while ((b = System.in.read()) >= 0)
+           os.write(b);
+       os.flush();
+       System.out.println(os.getLineCount());
+    }
+}