This centralizes the code that handles templates, and allows the empty
files to use default templates.
This partially reverts commits:
ada07f303e
Author Miklos Vajna <vmiklos@collabora.com>
Date Wed Oct 28 14:54:52 2020 +0100
tdf#123476 filter: try to detect 0-byte files based on extension
2854362f42
Author Mike Kaganski <mike.kaganski@collabora.com>
Date Wed Jan 27 16:05:54 2021 +0100
tdf#123476 filter: Also handle empty ODF
dff586735b
Author Mike Kaganski <mike.kaganski@collabora.com>
Date Mon May 03 17:04:04 2021 +0200
tdf#123476: also use filter by extension when its service is the same
The unit tests from these commits are retained and extended for templates.
Change-Id: I755738d2d5a6d6955d84d6e12f3accc017e0391f
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/132938
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
064f4fe82c