[Qt-interest] Problem using URL with special characters

[Thiago Macieira]

On Friday, 26 de August de 2011 16:07:26 kent williams wrote:
> 'https://predict-hd.net/xnat/REST/projects/FMRI_HD_024/subjects/0252/experim
> ents/45602/scans/2?xnat:mrScanData/parameters/addParam[name%3DReviewed]/addf
> ield=Yes'

> So I'm guessing the problem is that that the QUrl encoding is garbling
> my URL.  If I call toEncoded() I get this:
> 
> https://predict-hd.net/xnat/REST/projects/FMRI_HD_024/subjects/0252/experime
> nts/45602/scans/2?xnat:mrScanData/parameters/addParam%5Bname%253DReviewed%5D
> /addfield=Yes
> 
> In particular it's replacing my square brackets, and garbling the %3D
> (encoded '=')
> 
> I'm new to using Qt in this way and I'm baffled as to how to get to
> NOT screw up my URL.  Any ideas?

Note that the encoding of the brackets as %5B and %5D is perfectly correct. 
Focus on what's wrong: your original URL had %3D and the encoded form you 
produced says %253D.

My guess is that you made the same mistake that everyone does: due to a flaw in 
QUrl's design, it's constructor is unusable. Please add this to your code:

#define QT_NO_URL_CAST_FROM_STRING

And make sure you never call the QUrl constructor.

You want to use QUrl::formEncoded.

-- 
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
   Software Architect - Intel Open Source Technology Center
      PGP/GPG: 0x6EF45358; fingerprint:
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