Re: [Interest] Detecting subdirectories in QDir
Does it work properly if 'b' is root?
On 11.07.2018 17:59, Oleg Yadrov wrote:
Ha. I hope I didn't screw up this time.
#include
#include
#include
//returnstrueif'a'isasubdirectoryof'b'
boolisSubdirectory(QDira,QDirb)
{
while(!a.isRoot()){
if(a.absolutePath()==b.absolutePath())
returntrue;
a.cdUp();
}
returnfalse;
}
intmain(intargc,char*argv[])
{
QCoreApplicationapp(argc,argv);
QDira("/Users/olegyadrov/one/two/three");
QDirb("/Users/olegyadrov/one/two");
QDirc("/Users/olegyadrov/one/four");
qDebug()> wrote:
On Wednesday, 11 July 2018 07:44:46 PDT Oleg Yadrov wrote:
qDebug() << a.absolutePath().startsWith(b.absolutePath());
qDebug() << a.absolutePath().startsWith(c.absolutePath());
Except that this has a bug (which we had in Qt too): these two
directories are
considered to be parent-child, when they're not
C:\One\TwoAndTwenty
C:\One\Two
And since we're talking about Windows, you also need to use
case-insensitive
comparison.
--
Thiago Macieira - thiago.macieira (AT) intel.com
Software Architect - Intel Open Source Technology Center
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Re: [Interest] Detecting subdirectories in QDir
On Wednesday, 11 July 2018 07:59:28 PDT Thiago Macieira wrote: > On Wednesday, 11 July 2018 07:44:46 PDT Oleg Yadrov wrote: > > qDebug() << a.absolutePath().startsWith(b.absolutePath()); > > > > qDebug() << a.absolutePath().startsWith(c.absolutePath()); > > Except that this has a bug (which we had in Qt too): these two directories > are considered to be parent-child, when they're not > > C:\One\TwoAndTwenty > C:\One\Two > > And since we're talking about Windows, you also need to use case-insensitive > comparison. Because of these gotchas, it's probably worth having a QDir::isParentOf() function. -- Thiago Macieira - thiago.macieira (AT) intel.com Software Architect - Intel Open Source Technology Center ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] Detecting subdirectories in QDir
Ha. I hope I didn't screw up this time.
#include
#include
#include
// returns true if 'a' is a subdirectory of 'b'
bool isSubdirectory(QDir a, QDir b)
{
while (!a.isRoot()) {
if (a.absolutePath() == b.absolutePath())
return true;
a.cdUp();
}
return false;
}
int main(int argc, char *argv[])
{
QCoreApplication app(argc, argv);
QDir a("/Users/olegyadrov/one/two/three");
QDir b("/Users/olegyadrov/one/two");
QDir c("/Users/olegyadrov/one/four");
qDebug() << isSubdirectory(a, b);
qDebug() << isSubdirectory(a, c);
return app.exec();
}
On Jul 11, 2018, at 10:59 AM, Thiago Macieira
mailto:thiago.macie...@intel.com>> wrote:
On Wednesday, 11 July 2018 07:44:46 PDT Oleg Yadrov wrote:
qDebug() << a.absolutePath().startsWith(b.absolutePath());
qDebug() << a.absolutePath().startsWith(c.absolutePath());
Except that this has a bug (which we had in Qt too): these two directories are
considered to be parent-child, when they're not
C:\One\TwoAndTwenty
C:\One\Two
And since we're talking about Windows, you also need to use case-insensitive
comparison.
--
Thiago Macieira - thiago.macieira (AT) intel.com
Software Architect - Intel Open Source Technology Center
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Re: [Interest] Detecting subdirectories in QDir
On Wednesday, 11 July 2018 07:44:46 PDT Oleg Yadrov wrote: > qDebug() << a.absolutePath().startsWith(b.absolutePath()); > > qDebug() << a.absolutePath().startsWith(c.absolutePath()); Except that this has a bug (which we had in Qt too): these two directories are considered to be parent-child, when they're not C:\One\TwoAndTwenty C:\One\Two And since we're talking about Windows, you also need to use case-insensitive comparison. -- Thiago Macieira - thiago.macieira (AT) intel.com Software Architect - Intel Open Source Technology Center ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] Detecting subdirectories in QDir
Hi there,
You can compare their absolute paths.
#include
#include
#include
int main(int argc, char *argv[])
{
QCoreApplication app(argc, argv);
QDir a("/Users/olegyadrov/one/two/three");
QDir b("/Users/olegyadrov/one/two");
QDir c("/Users/olegyadrov/one/four");
qDebug() << a.absolutePath().startsWith(b.absolutePath());
qDebug() << a.absolutePath().startsWith(c.absolutePath());
return app.exec();
}
outputs
true
false
Best regards,
Oleg Yadrov - oleg.yad...@qt.io
On Jul 11, 2018, at 5:04 AM, Tom Isaacson via Interest
mailto:interest@qt-project.org>> wrote:
Is there any way of finding if one QDir is a subdirectory of another? So for
instance:
C:\One\Two\Three
is a subdirectory of:
C:\One\Two
but not of:
C:\One\Four
Thanks.
Tom Isaacson
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