diff -r 7e527fdf0fa8 -r c404a87db5b7 src/org/sonews/storage/ArticleHead.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/org/sonews/storage/ArticleHead.java	Sun Aug 29 17:43:58 2010 +0200
@@ -0,0 +1,161 @@
+/*
+ *   SONEWS News Server
+ *   see AUTHORS for the list of contributors
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sonews.storage;
+
+import java.io.ByteArrayInputStream;
+import java.util.Enumeration;
+import javax.mail.Header;
+import javax.mail.MessagingException;
+import javax.mail.internet.InternetHeaders;
+import javax.mail.internet.MimeUtility;
+import org.sonews.config.Config;
+
+/**
+ * An article with no body only headers.
+ * @author Christian Lins
+ * @since sonews/0.5.0
+ */
+public class ArticleHead 
+{
+
+  protected InternetHeaders headers   = null;
+  protected String          headerSrc = null;
+  
+  protected ArticleHead()
+  {
+  }
+  
+  public ArticleHead(String headers)
+  {
+    try
+    {
+      // Parse the header
+      this.headers = new InternetHeaders(
+          new ByteArrayInputStream(headers.getBytes()));
+    }
+    catch(MessagingException ex)
+    {
+      ex.printStackTrace();
+    }
+  }
+  
+  /**
+   * Returns the header field with given name.
+   * @param name Name of the header field(s).
+   * @param returnNull If set to true, this method will return null instead
+   *                   of an empty array if there is no header field found.
+   * @return Header values or empty string.
+   */
+  public String[] getHeader(String name, boolean returnNull)
+  {
+    String[] ret = this.headers.getHeader(name);
+    if(ret == null && !returnNull)
+    {
+      ret = new String[]{""};
+    }
+    return ret;
+  }
+
+  public String[] getHeader(String name)
+  {
+    return getHeader(name, false);
+  }
+  
+  /**
+   * Sets the header value identified through the header name.
+   * @param name
+   * @param value
+   */
+  public void setHeader(String name, String value)
+  {
+    this.headers.setHeader(name, value);
+    this.headerSrc = null;
+  }
+
+    public Enumeration getAllHeaders()
+  {
+    return this.headers.getAllHeaders();
+  }
+
+  /**
+   * @return Header source code of this Article.
+   */
+  public String getHeaderSource()
+  {
+    if(this.headerSrc != null)
+    {
+      return this.headerSrc;
+    }
+
+    StringBuffer buf = new StringBuffer();
+
+    for(Enumeration en = this.headers.getAllHeaders(); en.hasMoreElements();)
+    {
+      Header entry = (Header)en.nextElement();
+
+      String value = entry.getValue().replaceAll("[\r\n]", " ");
+      buf.append(entry.getName());
+      buf.append(": ");
+      buf.append(MimeUtility.fold(entry.getName().length() + 2, value));
+
+      if(en.hasMoreElements())
+      {
+        buf.append("\r\n");
+      }
+    }
+
+    this.headerSrc = buf.toString();
+    return this.headerSrc;
+  }
+
+  /**
+   * Sets the headers of this Article. If headers contain no
+   * Message-Id a new one is created.
+   * @param headers
+   */
+  public void setHeaders(InternetHeaders headers)
+  {
+    this.headers   = headers;
+    this.headerSrc = null;
+    validateHeaders();
+  }
+
+  /**
+   * Checks some headers for their validity and generates an
+   * appropriate Path-header for this host if not yet existing.
+   * This method is called by some Article constructors and the
+   * method setHeaders().
+   * @return true if something on the headers was changed.
+   */
+  protected void validateHeaders()
+  {
+    // Check for valid Path-header
+    final String path = getHeader(Headers.PATH)[0];
+    final String host = Config.inst().get(Config.HOSTNAME, "localhost");
+    if(!path.startsWith(host))
+    {
+      StringBuffer pathBuf = new StringBuffer();
+      pathBuf.append(host);
+      pathBuf.append('!');
+      pathBuf.append(path);
+      this.headers.setHeader(Headers.PATH, pathBuf.toString());
+    }
+  }
+  
+}