[Digikam-devel] [Bug 286611] Tags are losts (randomly) when converting Tiff to Png

[Ananta Palani]

https://bugs.kde.org/show_bug.cgi?id=286611

--- Comment #30 from Ananta Palani <anantapalani at gmail.com> ---
(In reply to comment #26)
> Gilles, using a dot-prefix for the filename is certainly also a possibility
> (at least on UNIX, would have to investigate if that's feasible on Windows).

As Gilles mentioned, it is feasible on Windows. Windows Explorer won't let you
create a file that starts with a period, but it is definitely allowed by the
Windows API (see the end of this section):

  
http://msdn.microsoft.com/en-us/library/windows/desktop/aa365247%28v=vs.85%29.aspx

AFIAK these files are not considered special in any way. 

> But before we change anything I'd like to understand how the Exiv2
> writeMetadata function can get interrupted so that it leaves the temporary
> file behind? Does Exiv2 output any error message to the console when this
> happens? 

I haven't run it while capturing debug output, so I'll have to check this (I'm
assuming this is what you mean by the console? On windows, there is no
'console' per say).

> Ananta, can you reproduce this issue so that you could debug it? It seems
> that the Exiv2 function FileIo::transfer (basicio.cpp) somehow fails. You
> might be able to find out where and why by adding some debug output or I can
> provide a patch for that if you like.

I'll definitely try to reproduce it. The error was happening with 0.21, but I
have 0.22 now. If you have time, a patch against 0.22 would be great (unless I
need some changes that have been made since).

-Ananta

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