Introduce mbox support

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

diff --git a/ext/javax.mail.mbox/src/com/sun/mail/mbox/ContentLengthCounter.java b/ext/javax.mail.mbox/src/com/sun/mail/mbox/ContentLengthCounter.java
new file mode 100644 (file)
index 0000000..f01aa59
--- /dev/null
+++ b/ext/javax.mail.mbox/src/com/sun/mail/mbox/ContentLengthCounter.java
@@ -0,0 +1,75 @@
+/*
+ * 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 the number of bytes in the body of the message written to the stream.
+ */
+class ContentLengthCounter extends OutputStream {
+    private long size = 0;
+    private boolean inHeader = true;
+    private int lastb1 = -1, lastb2 = -1;
+
+    public void write(int b) throws IOException {
+       if (inHeader) {
+           // if line terminator is CR
+           if (b == '\r' && lastb1 == '\r')
+               inHeader = false;
+           else if (b == '\n') {
+               // if line terminator is \n
+               if (lastb1 == '\n')
+                   inHeader = false;
+               // if line terminator is CRLF
+               else if (lastb1 == '\r' && lastb2 == '\n')
+                   inHeader = false;
+           }
+           lastb2 = lastb1;
+           lastb1 = b;
+       } else
+           size++;
+    }
+
+    public void write(byte[] b) throws IOException {
+       if (inHeader)
+           super.write(b);
+       else
+           size += b.length;
+    }
+
+    public void write(byte[] b, int off, int len) throws IOException {
+       if (inHeader)
+           super.write(b, off, len);
+       else
+           size += len;
+    }
+
+    public long getSize() {
+       return size;
+    }
+
+    /*
+    public static void main(String argv[]) throws Exception {
+       int b;
+       ContentLengthCounter os = new ContentLengthCounter();
+       while ((b = System.in.read()) >= 0)
+           os.write(b);
+       System.out.println("size " + os.getSize());
+    }
+    */
+}