1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:FDL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Free Documentation License
** Alternatively, this file may be used under the terms of the GNU Free
** Documentation License version 1.3 as published by the Free Software
** Foundation and appearing in the file included in the packaging of this
** file.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
/*!
\example xml/xmlstreamlint
\title XML Stream Lint Example
The XML Stream Lint example provides a simple command line utility that
accepts a file name as its single argument and writes it to the standard
output file.
The specified file is parsed using an QXmlStreamReader object and written
to the standard output file using an QXmlStreamWriter object. If the file
does not contain a well-formed XML document or the use of namespaces in
the document is incorrect, a description of the error is printed to
the standard error file and will appear in the console.
\section1 Basic Operation
The main function of the example opens the file specified by the user
for input (\c inputFile), and it uses QFile to access the standard output
file.
Reading XML is handled by an instance of the QXmlStreamReader class, which
operates on the input file object; writing is handled by an instance of
QXmlStreamWriter operating on the output file object:
\snippet examples/xml/xmlstreamlint/main.cpp 0
The work of parsing and rewriting the XML is done in a while loop, and is
driven by input from the reader:
\snippet examples/xml/xmlstreamlint/main.cpp 1
If more input is available, the next token from the input file is read
and parsed. If an error occurred, information is written to the standard
error file via a stream, and the example exits by returning a non-zero
value from the main function.
\snippet examples/xml/xmlstreamlint/main.cpp 2
For valid input, the writer is fed the current token from the reader,
and this is written to the output file that was specified when it was
constructed.
When there is no more input, the loop terminates, and the example can
exit successfully.
*/
|
