[Interest] QTextStream, QIODevice::Text and line endings convertation

[Igor Mironchik]

Hi,

Here is modified source:


#include <QCoreApplication>
#include <QTextStream>
#include <QDebug>
#include <QBuffer>

static const QChar c_n = QLatin1Char( '\n' );


QString readWord( QTextStream & stream )
{
     QChar ch;

     QString res;

     while( !stream.atEnd() )
     {
         stream >> ch;

         if( ch == c_n )
             break;
         else
             res.append( ch );
     }

     return res;
}


int main( int argc, char ** argv )
{
     QCoreApplication app( argc, argv );

     QString data = QLatin1String( "/*** Program Name ***/\r\n"
         "TEST PROGRAM TEST_00;\r\n"
         "BEGIN\r\n"
         "LOGIC\r\n"
         "NAME :\r"
         "ACTUAL_NAME\r\n"
         "OPTION ENABLE : " );

     QByteArray array = data.toLatin1();

     QBuffer buffer( &array );

     buffer.open( QIODevice::ReadOnly | QIODevice::Text );

     QTextStream stream( &buffer );

     while( !stream.atEnd() )
     {
         qDebug() << readWord( stream );
     }

     return 0;
}

And output is:

"/*** Program Name ***/"

"TEST PROGRAM TEST_00;"

"BEGIN"

"LOGIC"

"NAME :ACTUAL_NAME"

"OPTION ENABLE : "


Look here "NAME :ACTUAL_NAME" '\r' wasn't converted to '\n'...

Looks like a bug

On 17.11.2015 23:24, Thiago Macieira wrote:
> On Tuesday 17 November 2015 23:17:14 Igor Mironchik wrote:
>> Line endings doesn't convert to \n as should be. On Windows with MSVC
>> 2013 if read that data from file then "NAME :\r" even doesn't recognize
>> as line ending at all...
> Line ending conversion only applies when read from a QIODevice. It assumes
> you've already done the conversion by the time you got the data into a
> QString.
>

-- 
Best Regards,
Igor Mironchik.

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