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diff --git a/src/bufstr.h b/src/bufstr.h
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+/******************************************************************************
+ *
+ * $Id: bufstr.h,v 1.85 2000/11/18 12:58:19 root Exp $
+ *
+ *
+ * Copyright (C) 1997-2012 by Dimitri van Heesch.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation under the terms of the GNU General Public License is hereby 
+ * granted. No representations are made about the suitability of this software 
+ * for any purpose. It is provided "as is" without express or implied warranty.
+ * See the GNU General Public License for more details.
+ *
+ * Documents produced by Doxygen are derivative works derived from the
+ * input used in their production; they are not affected by this license.
+ *
+ */
+#ifndef _BUFSTR_H
+#define _BUFSTR_H
+
+#include "qtbc.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+/*! @brief Buffer used to store strings
+ *  
+ *  This buffer is used append characters and strings. It will automatically
+ *  resize itself, yet provide efficient random access to the content.
+ */
+class BufStr 
+{
+  public:
+    BufStr(int size) 
+      : m_size(size), m_writeOffset(0), m_spareRoom(10240), m_buf(0) 
+    {
+      m_buf = (char *)malloc(size);
+    }
+    ~BufStr()
+    {
+      free(m_buf);
+    }
+    void addChar(char c)
+    {
+      makeRoomFor(1);
+      m_buf[m_writeOffset++]=c;
+    }
+    void addArray(const char *a,int len)
+    {
+      makeRoomFor(len);
+      memcpy(m_buf+m_writeOffset,a,len);
+      m_writeOffset+=len;
+    }
+    void skip(uint s)
+    {
+      makeRoomFor(s);
+      m_writeOffset+=s;
+    }
+    void shrink( uint newlen )
+    {
+      m_writeOffset=newlen;
+      resize(newlen);
+    }
+    void resize( uint newlen )
+    {
+      m_size=newlen;
+      if (m_writeOffset>=m_size) // offset out of range -> enlarge
+      {
+        m_size=m_writeOffset+m_spareRoom;
+      }
+      m_buf = (char *)realloc(m_buf,m_size);
+    }
+    int size() const
+    {
+      return m_size;
+    }
+    char *data() const
+    {
+      return m_buf;
+    }
+    char &at(uint i) const
+    {
+      return m_buf[i];
+    }
+    bool isEmpty() const
+    {
+      return m_writeOffset==0;
+    }
+    operator const char *() const
+    {
+      return m_buf;
+    }
+    uint curPos() const
+    { 
+      return m_writeOffset; 
+    }
+    void dropFromStart(uint bytes)
+    {
+      if (bytes>m_size) bytes=m_size;
+      if (bytes>0) qmemmove(m_buf,m_buf+bytes,m_size-bytes);
+      m_size-=bytes;
+      m_writeOffset-=bytes;
+    }
+  private:
+    void makeRoomFor(uint size)
+    {
+      if (m_writeOffset+size>=m_size) 
+      {
+        resize(m_size+size+m_spareRoom);
+      }
+    }
+    uint m_size;
+    uint m_writeOffset;
+    const int m_spareRoom; // 10Kb extra room to avoid frequent resizing
+    char *m_buf;
+};
+
+
+#endif