[Bug 264204] New: Existing XMP sidecar file gets overwritten by digiKam

[Milan Knizek]

https://bugs.kde.org/show_bug.cgi?id=264204

           Summary: Existing XMP sidecar file gets overwritten by digiKam
           Product: digikam
           Version: 2.0.0
          Platform: Compiled Sources
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Metadata
        AssignedTo: [hidden email]
        ReportedBy: [hidden email]


Version:           2.0.0 (using KDE 4.5.5)
OS:                Linux

If there is already an XMP sidecar created by other application, digiKam
rewrites it with its own content.

Reproducible: Always

Steps to Reproduce:
Use some other application to create a sidecar XMP file for image.cr2 (e.g.
darktable).
Open digiKam, make sure "writing to XMP files is allowed", add some tag to
image.cr2.


Actual Results:  
XMP sidecar image.xmp gets overwritten, information stored by darktable is
lost.

Expected Results:  
digiKam is friendly to existing XMP keys and does not remove them.

darktable creates image.cr2.xmp, while digikam (as of now) creates image.xmp.
For the test above, either rename the sidecar or create a symlink.
BTW, darktable does the same as digiKam (bug).

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[Milan Knizek]

https://bugs.kde.org/show_bug.cgi?id=264204





--- Comment #1 from Milan Knizek <knizek volny cz>  2011-01-24 20:31:04 ---
Created an attachment (id=56398)
 --> (http://bugs.kde.org/attachment.cgi?id=56398)
XMP sidecar after renaming to 0test.xmp and adding tag in digiKam.

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[Marcel Wiesweg]

https://bugs.kde.org/show_bug.cgi?id=264204





--- Comment #2 from Marcel Wiesweg <marcel wiesweg gmx de>  2011-04-18 21:51:56 ---
Milan, can you still reproduce with a current beta? I tried to reproduce and I
think the information was merged into the sidecar.

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[Milan Knizek]

https://bugs.kde.org/show_bug.cgi?id=264204





--- Comment #3 from Milan Knizek <knizek volny cz>  2011-04-19 19:31:55 ---
Marcel, digikam (current git) seems to handle the foreign xmp file correctly -
the tags of darktable survives and new ones are added correctly.

Another issue: when I re-read metadata from file (blabla.cr2.xmp), they are
also synced to IPTC (legacy) and no character conversion from UTF to printable
ASCII is carried out. (Not even the buggy conversion as described in # 195508.)

E.g. the UTF character "š" gets shown as "Åi" in Metadata tab / IPTC. However,
XMP metadata are correct.

I propose to use the current conversion through QString::toAscii() to have at
least the same behaviour like described in the above mentioned bug 195508.

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[Marcel Wiesweg]

https://bugs.kde.org/show_bug.cgi?id=264204





--- Comment #4 from Marcel Wiesweg <marcel wiesweg gmx de>  2011-04-24 15:14:45 ---
Gilles, any idea at which level this conversion must be done? When writing IPTC
I suppose?

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=264204


Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[hidden email]




--- Comment #5 from Gilles Caulier <caulier gilles gmail com>  2011-04-24 19:28:07 ---
Yes, at IPTC registration. But if i remeber, i already pass UTF8 QString to
Exiv2 as QString::toAscii(), which is converted to ASCII. Perhaps it's a
problem relevant of Exiv2 when data are recorded to IPTC...

Gilles Caulier

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[Gilles Caulier-4]

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Metadata                    |Sidecar Management




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lexo <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[hidden email]

--- Comment #6 from lexo <[hidden email]> ---
(In reply to comment #0)

> Version:           2.0.0 (using KDE 4.5.5)
> OS:                Linux
>
> If there is already an XMP sidecar created by other application, digiKam
> rewrites it with its own content.
>
> Reproducible: Always
>
> Steps to Reproduce:
> Use some other application to create a sidecar XMP file for image.cr2 (e.g.
> darktable).
> Open digiKam, make sure "writing to XMP files is allowed", add some tag to
> image.cr2.
>
>
> Actual Results:  
> XMP sidecar image.xmp gets overwritten, information stored by darktable is
> lost.
>
> Expected Results:  
> digiKam is friendly to existing XMP keys and does not remove them.
>
> darktable creates image.cr2.xmp, while digikam (as of now) creates
> image.xmp. For the test above, either rename the sidecar or create a symlink.
> BTW, darktable does the same as digiKam (bug).

I've the same issue with Aftershot pro and/or darktable :(
xmp sidecar is overwrite by digikam 2.5.0 if geoloc and/or tag is added :(
merging will be the top :)

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[Marcel Wiesweg]

https://bugs.kde.org/show_bug.cgi?id=264204

Marcel Wiesweg <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED

--- Comment #7 from Marcel Wiesweg <[hidden email]> ---
With the sidecar fixes applied for coming 2.6, XMP data should now be merged
properly.
I would ask Milan to amend the encoding problem which arose here to 195508

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[Gilles Caulier-4]

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Version Fixed In|                            |2.6.0

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