Qt-interest Archive, July 2007
QByteArray to QString in hex format
Message 1 in thread
Dear community,
1. I'm getting mad... I just would like to convert an integer variable to a
formatted hex string.
With "uint myUInt = 24645;" I would like to have a QString containing 0x6045
(with or without leading 0).
Here what I've done, but I think it's too complicated and endianess is
wrong...
uint myUInt = 24645;
QString(QByteArray((char *) &myUInt, 4).toHex()).prepend("0x");
Does anyone has a better solution?
2. Is there a simple way to convert a QByteArray into that kind of hex
QString?
3. Does Qt provides a way to swap endianess ?
Thank you,
Christophe
--
[ signature omitted ]
Message 2 in thread
1a.)
What about "0x" + QString::number(myUInt , 16); ???
1b.)
QString myQString;
QTextStream myStream(&myQString);
myStream << "0x" << hex << myUInt;
2.)
Only the "do-it-yourself-way" - see 1b.) :-(
3.)
If you use QDataStream, it does. It depends on what you want to do.
Regards,
Malte
"Christophe Bismuth" <christophe.bismuth@xxxxxxxxx> schrieb am 27.07.2007
10:38:14:
> Dear community,
>
> 1. I'm getting mad... I just would like to convert an integer variable
to a
> formatted hex string.
> With "uint myUInt = 24645;" I would like to have a QString containing
0x6045
> (with or without leading 0).
>
> Here what I've done, but I think it's too complicated and endianess is
> wrong...
> uint myUInt = 24645;
> QString(QByteArray((char *) &myUInt, 4).toHex()).prepend("0x");
>
> Does anyone has a better solution?
>
> 2. Is there a simple way to convert a QByteArray into that kind of hex
> QString?
>
> 3. Does Qt provides a way to swap endianess ?
>
> Thank you,
> Christophe
>
>
> --
> To unsubscribe - send a mail to qt-interest-request@xxxxxxxxxxxxx
> with "unsubscribe" in the subject or the body.
> List archive and information: http://lists.trolltech.com/qt-interest/
>
--
[ signature omitted ]
Message 3 in thread
You should implement the convert function by yourself.
The following code is for your reference.
QString bytes2String(unsigned char* bytes, int len)
{
QString rt;
for(int i=0; i<len; i++)
{
char l = (bytes[i]>>4)&0x0F;
char r= bytes[i]&0x0F;
QChar c[2] = { c2a(l),c2a(r)};
rt += QString(c,2);
}
return QString("0x") + rt;
}
unsigned char c2a(unsigned char c)
{
if(c<=9)
{
return c+0x30;
}
return c-0x0A+'A';
}
-----Original Message-----
From: Christophe Bismuth [mailto:christophe.bismuth@xxxxxxxxx]
Sent: 2007年7月27日 4:38 PM
To: qt-interest@xxxxxxxxxxxxx
Subject: QByteArray to QString in hex format
Dear community,
1. I'm getting mad... I just would like to convert an integer variable to a
formatted hex string.
With "uint myUInt = 24645;" I would like to have a QString containing 0x6045
(with or without leading 0).
Here what I've done, but I think it's too complicated and endianess is
wrong...
uint myUInt = 24645;
QString(QByteArray((char *) &myUInt, 4).toHex()).prepend("0x");
Does anyone has a better solution?
2. Is there a simple way to convert a QByteArray into that kind of hex
QString?
3. Does Qt provides a way to swap endianess ?
Thank you,
Christophe
--
[ signature omitted ]
Message 4 in thread
... or you could use the more readable:
QString bytes2String(const QByteArray & arcArray)
{
QString myQString;
QTextStream myStream(&myQString);
myStream << "0x"
<< hex << qSetFieldWidth(2) << qSetPadChar('0') << left
for (int i = 0; i < arcArray.size(); ++i)
{
myQString << static_cast<unsigned char>(arcArray.at(i));
}
return myQString;
}
Regards,
Malte
"brian li" <lxgbrian@xxxxxxxxx> schrieb am 27.07.2007 11:32:42:
>
> You should implement the convert function by yourself.
>
> The following code is for your reference.
>
> QString bytes2String(unsigned char* bytes, int len)
> {
> QString rt;
> for(int i=0; i<len; i++)
> {
> char l = (bytes[i]>>4)&0x0F;
> char r= bytes[i]&0x0F;
> QChar c[2] = { c2a(l),c2a(r)};
> rt += QString(c,2);
> }
> return QString("0x") + rt;
> }
>
> unsigned char c2a(unsigned char c)
> {
> if(c<=9)
> {
> return c+0x30;
> }
> return c-0x0A+'A';
> }
> -----Original Message-----
> From: Christophe Bismuth [mailto:christophe.bismuth@xxxxxxxxx]
> Sent: 2007年7月27日 4:38 PM
> To: qt-interest@xxxxxxxxxxxxx
> Subject: QByteArray to QString in hex format
>
> Dear community,
>
> 1. I'm getting mad... I just would like to convert an integer variable
to a
> formatted hex string.
> With "uint myUInt = 24645;" I would like to have a QString containing
0x6045
>
> (with or without leading 0).
>
> Here what I've done, but I think it's too complicated and endianess is
> wrong...
> uint myUInt = 24645;
> QString(QByteArray((char *) &myUInt, 4).toHex()).prepend("0x");
>
> Does anyone has a better solution?
>
> 2. Is there a simple way to convert a QByteArray into that kind of hex
> QString?
>
> 3. Does Qt provides a way to swap endianess ?
>
> Thank you,
> Christophe
>
>
> --
> To unsubscribe - send a mail to qt-interest-request@xxxxxxxxxxxxx with
> "unsubscribe" in the subject or the body.
> List archive and information: http://lists.trolltech.com/qt-interest/
>
> --
> To unsubscribe - send a mail to qt-interest-request@xxxxxxxxxxxxx
> with "unsubscribe" in the subject or the body.
> List archive and information: http://lists.trolltech.com/qt-interest/
>
--
[ signature omitted ]
Message 5 in thread
On 27.07.07 17:32:42, brian li wrote:
>
> You should implement the convert function by yourself.
Why do people always re-invent the wheel when there's already a solution
available? Instead of writing down all this code a short look into
QString's API docs reveals:
number(int, int base)
which gives you (or the OP) everything thats needed.
Andreas
--
[ signature omitted ]
Message 6 in thread
Thank you all, it works fine now with your solutions :o)
"Andreas Pakulat" <apaku@xxxxxx> a écrit dans le message de news:
20070727105709.GD24887@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> On 27.07.07 17:32:42, brian li wrote:
>>
>> You should implement the convert function by yourself.
>
> Why do people always re-invent the wheel when there's already a solution
> available? Instead of writing down all this code a short look into
> QString's API docs reveals:
>
> number(int, int base)
>
> which gives you (or the OP) everything thats needed.
>
> Andreas
>
> --
> Cheer Up! Things are getting worse at a slower rate.
>
> --
> To unsubscribe - send a mail to qt-interest-request@xxxxxxxxxxxxx with
> "unsubscribe" in the subject or the body.
> List archive and information: http://lists.trolltech.com/qt-interest/
--
[ signature omitted ]
Message 7 in thread
> -----Original Message-----
> From: Andreas Pakulat [mailto:apaku@xxxxxx]
> Sent: Friday, July 27, 2007 3:57 AM
> To: qt-interest@xxxxxxxxxxxxx
> Subject: Re: QByteArray to QString in hex format
>
> On 27.07.07 17:32:42, brian li wrote:
> >
> > You should implement the convert function by yourself.
>
> Why do people always re-invent the wheel when there's already a
solution
> available? Instead of writing down all this code a short look into
> QString's API docs reveals:
>
> number(int, int base)
>
> which gives you (or the OP) everything thats needed.
>
> Andreas
Because We are much smarter then everyone else :)
So if I can I would much rather prefer to re-write everything for every
project..
Infact... I just was able to drop using outlook and my ISPs SMTP server.
Instead Im using my new email client and a custom SMTP server...
Dang... looks like it just got hacked... I guess back to the drawing
board...
--
[ signature omitted ]
