Greg Minshall (2020-Jan-21, excerpt):
> now: i'd like to have a command line lua script that quickly (i have 32K
> images) lists all the images with a given, e.g., tag, or date, or ...
> i.e., the things one can specify when creating a collection.
Note: I'm *not* a developer!
AFAIK, Darktable heavily relies on an an SQLite database
$ cd ~/.config/darktable
$ file library.db
library.db: SQLite 3.x database, last written using SQLite version 3030001
Which you may query (and mess up) using appropriate tools, e.g.,
`sqlite3`, see its man page. You will need to use SQL for that, and
understand Darktable's internal database schema. It's easy to get the
images with ISO > 1600
$ sqlite3 library.db
sqlite> select filename from images where iso > 1600;
but tags probably involve a join and a deeper understanding of the
schema. Which may, and probably will, change between Database
versions. So be prepared for your script to break.
Note that you probably cannot run Darktable and `sqlite3` at the same
time.
Cheers,
Stefan
PS: Post here when you find out how tags are stored in the DB...
--
Dr. Stefan Klinger -- Informatiker, Mathematiker o/X
https://stefan-klinger.de /\/
I prefer receiving plain text messages, not exceeding 32kB. \
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