As-gui Sources / file comparison
comparison: as_sfile.cpp
as_sfile.cpp
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| 1 // | |
| 2 // OSSP asgui - Accounting system graphical user interface | |
| 3 // Copyright (c) 2002-2004 The OSSP Project (http://www.ossp.org/) | |
| 4 // Copyright (c) 2002-2004 Ralf S. Engelschall <rse@engelschall.com> | |
| 5 // Copyright (c) 2002-2004 Michael Schloh von Bennewitz <michael@schloh.com> | |
| 6 // Copyright (c) 2002-2004 Cable & Wireless Telecommunications Services GmbH | |
| 7 // | |
| 8 // This file is part of OSSP asgui, an accounting system graphical user | |
| 9 // interface which can be found at http://www.ossp.org/pkg/tool/asgui/. | |
| 10 // | |
| 11 // Permission to use, copy, modify, and distribute this software for | |
| 12 // any purpose with or without fee is hereby granted, provided that | |
| 13 // the above copyright notice and this permission notice appear in all | |
| 14 // copies. | |
| 15 // | |
| 16 // THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED | |
| 17 // WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
| 18 // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
| 19 // IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR | |
| 20 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF | |
| 23 // USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
| 24 // ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | |
| 25 // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT | |
| 26 // OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 27 // SUCH DAMAGE. | |
| 28 // | |
| 29 // as_sfile.cpp: ISO C++ implementation | |
| 30 // | |
| 31 | |
| 32 #include "as_sfile.h" | |
| 33 #include "as_except.h" | |
| 34 | |
| 35 | |
| 36 // | |
| 37 // Serialize a backup of an incoming file object | |
| 38 // | |
| 39 void Simplefile::makeBackup(void) | |
| 40 { | |
| 41 QFile Filein; // Input readonly file | |
| 42 QFile Filebak; // Backup writeonly file | |
| 43 QString Fname; // Filename of input file | |
| 44 QTextStream Streamin; // Stream to read from (Filein) | |
| 45 QTextStream Streambak; // Stream to write to (Filebak) | |
| 46 | |
| 47 try { | |
| 48 if(!this->exists()) // Conditionally short circuit if | |
| 49 return; // file to backup does not exist | |
| 50 Fname = this->name(); // Copy filename from original | |
| 51 Filein.setName(Fname); // Set filename of original | |
| 52 Filein.open(IO_ReadOnly); // Open original read-only | |
| 53 Filebak.setName(Fname + ".bak"); // Set filename of backup | |
| 54 Filebak.open(IO_WriteOnly); // Open backup write-only | |
| 55 Streamin.setDevice(&Filein); // Set incoming stream | |
| 56 Streambak.setDevice(&Filebak); // Set outgoing stream | |
| 57 Streambak << Streamin.read(); // Do actual writing | |
| 58 Filein.close(); // Close original | |
| 59 Filebak.close(); // Close backup | |
| 60 } | |
| 61 catch (Genexcept& Genex) { | |
| 62 Genex.reportErr(); | |
| 63 } | |
| 64 } |
