diff -r 27e940e8e5f3 -r d64aaa7d146f as_sfile.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/as_sfile.cpp	Fri Nov 28 11:21:08 2008 +0100
@@ -0,0 +1,64 @@
+//
+//  OSSP asgui - Accounting system graphical user interface
+//  Copyright (c) 2002-2004 The OSSP Project (http://www.ossp.org/)
+//  Copyright (c) 2002-2004 Ralf S. Engelschall <rse@engelschall.com>
+//  Copyright (c) 2002-2004 Michael Schloh von Bennewitz <michael@schloh.com>
+//  Copyright (c) 2002-2004 Cable & Wireless Telecommunications Services GmbH
+//
+//  This file is part of OSSP asgui, an accounting system graphical user
+//  interface which can be found at http://www.ossp.org/pkg/tool/asgui/.
+//
+//  Permission to use, copy, modify, and distribute this software for
+//  any purpose with or without fee is hereby granted, provided that
+//  the above copyright notice and this permission notice appear in all
+//  copies.
+//
+//  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+//  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+//  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+//  IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
+//  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+//  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+//  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+//  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+//  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+//  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+//  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+//  SUCH DAMAGE.
+//
+//  as_sfile.cpp: ISO C++ implementation
+//
+
+#include "as_sfile.h"
+#include "as_except.h"
+
+
+//
+// Serialize a backup of an incoming file object
+//
+void Simplefile::makeBackup(void)
+{
+    QFile Filein;           // Input readonly file
+    QFile Filebak;          // Backup writeonly file
+    QString Fname;          // Filename of input file
+    QTextStream Streamin;   // Stream to read from (Filein)
+    QTextStream Streambak;  // Stream to write to (Filebak)
+
+    try {
+        if(!this->exists())                 // Conditionally short circuit if
+            return;                         // file to backup does not exist
+        Fname = this->name();               // Copy filename from original
+        Filein.setName(Fname);              // Set filename of original
+        Filein.open(IO_ReadOnly);           // Open original read-only
+        Filebak.setName(Fname + ".bak");    // Set filename of backup
+        Filebak.open(IO_WriteOnly);         // Open backup write-only
+        Streamin.setDevice(&Filein);        // Set incoming stream
+        Streambak.setDevice(&Filebak);      // Set outgoing stream
+        Streambak << Streamin.read();       // Do actual writing
+        Filein.close();                     // Close original
+        Filebak.close();                    // Close backup
+    }
+    catch (Genexcept& Genex) {
+        Genex.reportErr();
+    }
+}