Loading...

XML

Word

Printable

Details

Type: Bug
Resolution: Done
Priority: P2: Important
Fix Version/s: 5.14.0 RC1, 5.14.1, 5.15.0 Alpha
Affects Version/s: 5.12.3
Component/s: XML: DOM
Labels:
None

Platform/s:

All
Commits:
d7cb21ac085117f879a8aa1d7727b2ca52d3353d (qt/qtbase/5.14)

Description

I have tried to write down float and double numbers to xml file. But there is a problem:
float numbers always writing with dot decimal separator and double numbers wtiteing with comma seperator even if programm locale set to QLocale::C.

Thera two variables:
float floatVal = 0.1234f;
double doubleVal = 0.1234;

When I wtite them to QDomDocument the output file looks like this:

<Root doubleVal="0,1234" floatVal="0.1234"/>

System locale settings are:

// 
user@paefimov:~$ locale
LANG=en_US.UTF-8
LANGUAGE=en_US
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC=ru_RU.UTF-8
LC_TIME=en_US.UTF-8
LC_COLLATE="en_US.UTF-8"
LC_MONETARY=ru_RU.UTF-8
LC_MESSAGES="en_US.UTF-8"
LC_PAPER=ru_RU.UTF-8
LC_NAME=ru_RU.UTF-8
LC_ADDRESS=ru_RU.UTF-8
LC_TELEPHONE=ru_RU.UTF-8
LC_MEASUREMENT=ru_RU.UTF-8
LC_IDENTIFICATION=ru_RU.UTF-8
LC_ALL=

Example:

// 
#include <QCoreApplication>

#include <QDomDocument>
#include <QFile>
#include <QTextStream>
#include <QDebug>

int main(int argc, char* argv[])
{
    QCoreApplication a(argc, argv);

    QLocale locale(QLocale::C);

    QLocale::setDefault(locale);

    QFile xmlFile("data.xml");
    xmlFile.open(QIODevice::WriteOnly);

    QDomDocument xmlWriter;

    QDomElement rootNode = xmlWriter.createElement("Root");
    xmlWriter.appendChild(rootNode);

    float floatVal = 0.1234f;
    double doubleVal = 0.1234;

    rootNode.setAttribute("DecimalPoint", locale.decimalPoint());
    rootNode.setAttribute("floatVal", floatVal);
    rootNode.setAttribute("doubleVal", doubleVal);

    xmlFile.write(xmlWriter.toByteArray());
    xmlFile.close();

    return a.exec();
}