[Interest] QTextStream problem

[Turtle Creek Software]

The data files may have any of 3 possible line endings, depending on
whether they were made on Windows or old/new Macs.  The one we tested with
must have been created on an older Mac with just CR.

Seems to me that QTextStream::readAll should read all the text, like the
name says. Let the user process line endings.  Ditto for
QTextStream::read.  Actually readLine also breaks, because CRs are stripped
before it parses lines.

If existing users rely on CR-zapping, then at least add a mention in the
docs and/or a way to control it.

Best, Casey McD

On Wed, Jul 31, 2024 at 6:00 AM <interest-request at qt-project.org> wrote:

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>    1. QTextStream problem (Turtle Creek Software)
>    2. Re: QTextStream problem (Thiago Macieira)
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> ---------- Forwarded message ----------
> From: Turtle Creek Software <support at turtlesoft.com>
> To: interest at qt-project.org
> Cc:
> Bcc:
> Date: Tue, 30 Jul 2024 11:30:27 -0400
> Subject: [Interest] QTextStream problem
> We ran into a weird error with QTextStream.  When using it to read a text
> file, it removes all the line endings. That happens with readAll, read and
> readLine.
>
> Getting a QString direct from a QFile via readAll works properly.
>
> Is this expected behavior in QTextStream? It's not documented anywhere.
>
> Casey McDermott
> TurtleSoft.com
>
>
>
>
>
> ---------- Forwarded message ----------
> From: Thiago Macieira <thiago.macieira at intel.com>
> To: interest at qt-project.org
> Cc:
> Bcc:
> Date: Tue, 30 Jul 2024 08:57:48 -0700
> Subject: Re: [Interest] QTextStream problem
> On Tuesday 30 July 2024 08:30:27 GMT-7 Turtle Creek Software wrote:
> > We ran into a weird error with QTextStream.  When using it to read a text
> > file, it removes all the line endings. That happens with readAll, read
> and
> > readLine.
> >
> > Getting a QString direct from a QFile via readAll works properly.
> >
> > Is this expected behavior in QTextStream? It's not documented anywhere.
>
> No, it's not.
>
> Looking at the code, it looks like it implements the translation from CRLF
> to
> newlines by simple removal of the CR. It doesn't check that it's followed
> by
> an LF.
>
> Is your text file using CRs alone for line breaks?
>
> --
> Thiago Macieira - thiago.macieira (AT) intel.com
>   Principal Engineer - Intel DCAI Platform & System Engineering
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