Hi,
I use darktable-cli, the non-gui cmdline tool to develop or export the
images. I understand that is a read-only operation regarding the xmp files.
from the man-page: "darktable-cli is a command line variant to be used to
export images given the raw file and the accompanying xmp file."
regards
Joerg
2014-10-05 12:20 GMT+02:00 parafin <para...@paraf.in>:
> Are you sure nothing is changed in those .xmp files? Might be some
> module has been updated and params are converted to newer version and
> saved back. And looking at the size it's obvious there is some
> difference. Also can you check if the behaviour is the same when you
> export files from DT GUI (without opening them in DR)?
>
> On Sun, 5 Oct 2014 11:01:04 +0200
> Joerg Beyer <joerg.be...@gmail.com> wrote:
>
> > Hi,
> >
> > I am setting up some automation with darktable-cli to generate some foto
> > collections. I thought using good old make (the tool to automate
> > compilations etc) would be a good idea, but I found out, that
> darktable-cli
> > changes the modification time of the xmp sidecar files.
> >
> > for illustration:
> > joerg@dilbert:~/tmp$ date
> > So 5. Okt 10:57:10 CEST 2014
> > joerg@dilbert:~/tmp$ ls -la
> > insgesamt 19180
> > drwx------ 2 joerg joerg 4096 Okt 5 10:57 .
> > drwxrwxr-x 172 joerg joerg 20480 Okt 5 09:49 ..
> > -rw-rw-r-- 1 joerg joerg 19606386 Okt 5 10:56 IMG_6905.CR2
> > -rw-rw-r-- 1 joerg joerg 4656 Okt 5 10:56 IMG_6905.CR2.xmp
> > joerg@dilbert:~/tmp$ date
> > So 5. Okt 10:57:19 CEST 2014
> > joerg@dilbert:~/tmp$ darktable-cli IMG_6905.CR2 IMG_6905.CR2.xmp
> > IMG_6905.jpg --width 1000 --height 1000
> > [export_job] exported to `IMG_6905.jpg'
> > joerg@dilbert:~/tmp$ ls -la
> > insgesamt 19844
> > drwx------ 2 joerg joerg 4096 Okt 5 10:57 .
> > drwxrwxr-x 172 joerg joerg 20480 Okt 5 09:49 ..
> > -rw-rw-r-- 1 joerg joerg 19606386 Okt 5 10:56 IMG_6905.CR2
> > -rw-rw-r-- 1 joerg joerg 4674 Okt 5 10:57 IMG_6905.CR2.xmp
> > -rw-rw-r-- 1 joerg joerg 679573 Okt 5 10:57 IMG_6905.jpg
> >
> > you can see, that the modifiaction time for the xmp file was updated from
> > 10:56 to 10:57.
> >
> > It seems to be no problem, if DT can't write the xmp file, because file
> > permissions forbit it:
> >
> > joerg@dilbert:~/tmp$ chmod 440 IMG_6905.CR2.xmp
> > joerg@dilbert:~/tmp$ rm IMG_6905.jpg
> > joerg@dilbert:~/tmp$ darktable-cli IMG_6905.CR2 IMG_6905.CR2.xmp
> > IMG_6905.jpg --width 1000 --height 1000
> > [export_job] exported to `IMG_6905.jpg'
> > joerg@dilbert:~/tmp$ ls -la
> > insgesamt 19844
> > drwx------ 2 joerg joerg 4096 Okt 5 10:59 .
> > drwxrwxr-x 172 joerg joerg 20480 Okt 5 09:49 ..
> > -rw-rw-r-- 1 joerg joerg 19606386 Okt 5 10:56 IMG_6905.CR2
> > -r--r----- 1 joerg joerg 4674 Okt 5 10:57 IMG_6905.CR2.xmp
> > -rw-rw-r-- 1 joerg joerg 679573 Okt 5 10:59 IMG_6905.jpg
> >
> > the jpeg file is OK.
> >
> > Would a patch to write the sidecars back to disk, only if the have
> changes
> > be accepted?
> >
> > regards
> > Joerg
>
>
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