[Qt-interest] Symbolic link real value?

[Lukas Lipavsky]

On 28.07. 13:57, Pau Garcia i Quiles wrote:
> On Tue, Jul 28, 2009 at 1:52 PM, Lukas Lipavsky<llipavsky at suse.cz> wrote:
> > On 28.07. 13:47, Pau Garcia i Quiles wrote:
> >> On Tue, Jul 28, 2009 at 1:40 PM, Lukas Lipavsky<llipavsky at suse.cz> wrote:
> >> > Hi,
> >> >
> >> > is there any way to get the path symlink (in linux) is pointing to? But
> >> > I need the real value - e.g. '../../dir/file'
> >> >
> >> > All I found so far was QFileInfo::symLinkTarget() but it returns
> >> > *absolute* path, which is useless for me.
> >> >
> >> > Is there any way to get this information from the Qt library (better
> >> > than calling ls)?
> >>
> >> Use QDir::relativeFilePath with the current directory (QDir::current() )
> >>
> >> http://doc.trolltech.com/4.5/qdir.html#relativeFilePath
> >> http://doc.trolltech.com/4.5/qdir.html#current
> >
> > thanks,
> >
> > but unfortunatelly, this won't help me either. To make it more clean, I
> > am writing a synchronization app that would synchronize the content of
> > two directories (on different hosts). For this I need to be able to
> > synchronize the symbolic link to the same state as it is, so if it's
> > absolute, keep it absolute, if it's relative, keep it relative...
> >
> > Is there any way to do this?
> 
> Match the result of QFile::symLinkTarget() against "..":
> - It it contains "..", it's a relative symlink and you should then use
> QDir::relativeFilePath() and Qdir::current() to get in the destination
> machine the same path as in the origin machine.
> - It it does not contain "..", it's an absolute symlink and the output
> of QFile::symLinkTarget() is what you want.

No, it does not:
1. relative path does not need to contain '..'
2. even if it worked, symLinkTarget() never returns path with '..',
because it always return absolute path. If it would return relative
path, that would be exactly what I need.


Best regards,
-- 
Lukas Lipavsky, QA Developer

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