1 files changed, 111 insertions, 0 deletions
diff --git a/java/com/android/voicemailomtp/src/org/apache/james/mime4j/RootInputStream.java b/java/com/android/voicemailomtp/src/org/apache/james/mime4j/RootInputStream.java
new file mode 100644
index 000000000..cc8b2411c
--- /dev/null
+++ b/java/com/android/voicemailomtp/src/org/apache/james/mime4j/RootInputStream.java
@@ -0,0 +1,111 @@
+/****************************************************************
+ * Licensed to the Apache Software Foundation (ASF) under one   *
+ * or more contributor license agreements.  See the NOTICE file *
+ * distributed with this work for additional information        *
+ * regarding copyright ownership.  The ASF licenses this file   *
+ * to you under the Apache License, Version 2.0 (the            *
+ * "License"); you may not use this file except in compliance   *
+ * with the License.  You may obtain a copy of the License at   *
+ *                                                              *
+ *   http://www.apache.org/licenses/LICENSE-2.0                 *
+ *                                                              *
+ * Unless required by applicable law or agreed to in writing,   *
+ * software distributed under the License is distributed on an  *
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
+ * KIND, either express or implied.  See the License for the    *
+ * specific language governing permissions and limitations      *
+ * under the License.                                           *
+ ****************************************************************/
+
+package org.apache.james.mime4j;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * <code>InputStream</code> used by the parser to wrap the original user
+ * supplied stream. This stream keeps track of the current line number and
+ * can also be truncated. When truncated the stream will appear to have
+ * reached end of file. This is used by the parser's
+ * {@link org.apache.james.mime4j.MimeStreamParser#stop()} method.
+ *
+ *
+ * @version $Id: RootInputStream.java,v 1.2 2004/10/02 12:41:10 ntherning Exp $
+ */
+class RootInputStream extends InputStream {
+    private InputStream is = null;
+    private int lineNumber = 1;
+    private int prev = -1;
+    private boolean truncated = false;
+
+    /**
+     * Creates a new <code>RootInputStream</code>.
+     *
+     * @param in the stream to read from.
+     */
+    public RootInputStream(InputStream is) {
+        this.is = is;
+    }
+
+    /**
+     * Gets the current line number starting at 1
+     * (the number of <code>\r\n</code> read so far plus 1).
+     *
+     * @return the current line number.
+     */
+    public int getLineNumber() {
+        return lineNumber;
+    }
+
+    /**
+     * Truncates this <code>InputStream</code>. After this call any
+     * call to {@link #read()}, {@link #read(byte[]) or
+     * {@link #read(byte[], int, int)} will return
+     * -1 as if end-of-file had been reached.
+     */
+    public void truncate() {
+        this.truncated = true;
+    }
+
+    /**
+     * @see java.io.InputStream#read()
+     */
+    public int read() throws IOException {
+        if (truncated) {
+            return -1;
+        }
+
+        int b = is.read();
+        if (prev == '\r' && b == '\n') {
+            lineNumber++;
+        }
+        prev = b;
+        return b;
+    }
+
+    /**
+     *
+     * @see java.io.InputStream#read(byte[], int, int)
+     */
+    public int read(byte[] b, int off, int len) throws IOException {
+        if (truncated) {
+            return -1;
+        }
+
+        int n = is.read(b, off, len);
+        for (int i = off; i < off + n; i++) {
+            if (prev == '\r' && b[i] == '\n') {
+                lineNumber++;
+            }
+            prev = b[i];
+        }
+        return n;
+    }
+
+    /**
+     * @see java.io.InputStream#read(byte[])
+     */
+    public int read(byte[] b) throws IOException {
+        return read(b, 0, b.length);
+    }
+}
+\ No newline at end of file