Re: Re: Qt 4.8 QUrl.toLocalFile behavior change, impacts to KUrl (and friends)
A Divendres, 28 d'octubre de 2011, Thiago Macieira vàreu escriure: On Friday, 28 de October de 2011 10:41:36 Sebastian Trüg wrote: So, to be honest, the bug already existed in your code if you're finding these problems now. I just made it blatantly clear, and it's been there for a year for people to see. I'm also calling right now KUrl's fromPathOrUrl a fatally flawed design. Be that as it may but the fact remains that KDE potentially does not work with Qt 4.8. Is that really a risk worth taking? I am all for fixed semantics in the methods but this seems like a problematic case. Let me repeat: the problem already existed. This just made the broken code more evident. You should fix it ANYWAY. Right, it was wrong if it had to accept user input but for internal hardcoded paths, it worked and now it does not. Albert If you had a file path of: /tmp/Who let the dogs out?.mp3 or/tmp/Mambo #5.mp3 In Qt 4.7, toLocalFile on those URLs above would return: /tmp/Who let the dogs out and /tmp/Mambo Which is quite wrong already. From Qt 4.8 on, this returns empty in all cases, showing that you parsed the URL wrongly. It should be easier to spot where you made the mistake because you don't have to use specially-crafted filenames. -- Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org Software Architect - Intel Open Source Technology Center PGP/GPG: 0x6EF45358; fingerprint: E067 918B B660 DBD1 105C 966C 33F5 F005 6EF4 5358
Re: Re: Qt 4.8 QUrl.toLocalFile behavior change, impacts to KUrl (and friends)
Albert Astals Cid wrote: Personally i find it another joke in the history of Qt, saying you maintain API and ABI (that you do) but then making functions behave totally different from one version to another is just plain useless. +1 You just CANNOT change the behavior of an existing function in such a way. Kevin Kofler
Re: Re: Qt 4.8 QUrl.toLocalFile behavior change, impacts to KUrl (and friends)
A Dijous, 27 d'octubre de 2011, Thiago Macieira vàreu escriure: On Thursday, 27 de October de 2011 13:32:51 Rex Dieter wrote: See also, http://bugs.kde.org/285028 ( and https://bugreports.qt.nokia.com/browse/QTBUG-22382 ) In Qt 4.8, QUrl.toLocalFile now seems, by design, to return NULL for urls lacking any scheme. Discovered this the hard way figuring out why all my audio knotifications were quiet. Since audio event sources are simple filenames, e.g. KDE-K3B-Finish-Success.ogg, and QString soundFile = soundFileURL.toLocalFile(); no longer works. Any suggestions or advice on how best to deal with this? As we discussed on IRC, any string source must be properly labelled whether they are a URL or they are a local file. They cannot be both. Personally i find it another joke in the history of Qt, saying you maintain API and ABI (that you do) but then making functions behave totally different from one version to another is just plain useless. Albert -- Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org Software Architect - Intel Open Source Technology Center PGP/GPG: 0x6EF45358; fingerprint: E067 918B B660 DBD1 105C 966C 33F5 F005 6EF4 5358
Re: Re: Qt 4.8 QUrl.toLocalFile behavior change, impacts to KUrl (and friends)
A Dijous, 27 d'octubre de 2011, Thiago Macieira vàreu escriure: On Thursday, 27 de October de 2011 22:31:15 Albert Astals Cid wrote: Personally i find it another joke in the history of Qt, saying you maintain API and ABI (that you do) but then making functions behave totally different from one version to another is just plain useless. Right. So we should just not release updates, because fixing bugs changes behaviour. This is not what i meant, and you know it. But as it is obvious you do not want to have a constructive discussion, let's end it here. Albert Good thinking. Call me when you get to make such decisions. -- Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org Software Architect - Intel Open Source Technology Center PGP/GPG: 0x6EF45358; fingerprint: E067 918B B660 DBD1 105C 966C 33F5 F005 6EF4 5358
