[windev] Problem reading text files

[truckleaj-windev@yahoo.co.uk]

Serge

My task here is very simple:

I am using CStdioFile and ReadString to read a ".CSS" file line by line and=
 .WriteString it into the header section of a HTML file.

In principle it works, but because of the BOM that appears in the CSS file =
(if it is encoded) I get the BOM displaying as a few strange characters in =
the HTML browser control.

All I need is a robust way of reading the CSS text file, irrespective of th=
e presence of the BOM. Otherwise I will simply force users to use ANSI form=
at.

The thing is, if I edit the CSS with expression web 2 it becomes encoded as=
 utf-8, so that is why I wanted to somehow atleast cater for it.

My app is unicode so I should eb able to read the strings into CString and =
carry on. Although, now I think about it, if the CSS isUTF-8 then I guess t=
he HTML file should have had a UTF-8 BOM too.=A0 Hhmm.

Andrew




________________________________
From: Serge Wautier <serge at wautier.net>
To: WinDev <windev at windev.org>
Sent: Tuesday, 31 March, 2009 16:46:25
Subject: Re: [windev] Problem reading text files

"There ain't no such thing as plain text".

CStdioFile::ReadString() (I guess that's what you use. You don't tell us.
You don't show us any code) is based on fgets() which in turn is
character-oriented, which means it expects text in one given codepage.

If you don't know the codepage and have to preserve encoding and all you
want is to look for specific HTML tags and modify them, your only chance is
to use byte buffers instead of strings.
Use CFile::Read() to fill a binary buffer and cast bytes to chars: The
substrings you're looking are 7-bit ASCII. You'll find them easily and
replacing them won't be difficult. A bit more coding for a lot less
problems.
Anyway, forget about strings: Since you don't know how they are encoded,
you'll never know if you broke them. =


Serge.
http://www.apptranslator.com



> -----Original Message-----
> From: windev-bounces at windev.org [mailto:windev-bounces at windev.org] On
> Behalf Of truckleaj-windev at yahoo.co.uk
> Sent: samedi 28 mars 2009 16:06
> To: windev at windev.org
> Subject: [windev] Problem reading text files
> =

> Hello
> =

> I am using CStdioFile to read a text file, line by line, doing some
> processing on each line, and then adding the resulting CString into a
> new CStdioFile.
> =

> In all respects it is very basic coding.=A0 The problem lies in the fact
> that if the file is unicode and not ANSI, that the CStdioFile reads in
> the byteorder mark. This ends up as gibberish in my resulting file
> which is a HTML file.
> =

> The file being merged into the HTML is essentially CSS content
> information. However it is possible that the usre might put some
> language specific detail in there in one or two of the javascript
> methods. So they *might* end up changing the file to unicode. In which
> case I'll get the same problem again.
> =

> What can I do? Ideally I want to be able to use CStsioFile with any of
> these files and read in all the lines a CString objects. My application
> is unicode so it should be able to deal with it.
> =

> Please advise. Thanks.
> =

> Andrew
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