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zen-browser-snap/snap/hooks/post-refresh

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#!/bin/sh
# Copyright (C) 2022 Canonical Ltd.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3, as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
host_hunspell=/var/lib/snapd/hostfs/usr/share/hunspell
if [ ! -d $host_hunspell ]; then
echo "No host hunspell, skipping"
exit 0
fi
DICPATH=$SNAP_COMMON/snap-hunspell
if [ -d $DICPATH ]; then
# Clean up on each refresh to ensure we have an up-to-date list
# of host dictionaries.
find $DICPATH -type l -name "*.dic" -or -name "*.aff" | xargs rm
else
mkdir -p $DICPATH
fi
# We deliberately don't directly use the host dictionary files.
# Instead, we use their names to know which ones the user has
# installed on their system, and we use the corresponding ones
# we primed in '$SNAP/usr/share/hunspell' in our 'hunspell' part.
#
# - We don't set DICPATH=/var/lib/snapd/hostfs/usr/share/hunspell
# to avoid potential incompatibility due to different hunspell
# versions inside the snap and outside on the host. See:
# https://github.com/snapcore/snapd/pull/11025
#
# - We don't set DICPATH="$SNAP/usr/share/hunspell" because that
# would result in all available dictionaries we primed in our
# 'hunspell' part being displayed in Firefox's interface,
# presenting an overwhelming number of options to the user.
# So instead we only use those that were installed on the host.
# This way, the user could affect the dictionaries available to
# Firefox snap similarly to how they could for non-snap Firefox.
for dic in $(find $host_hunspell/ -name "*.dic"); do
dic_file=$(basename $dic)
aff_file="${dic_file%%.dic}.aff"
# Some dic,aff files in hunspell are themselves symlinks to other files,
# e.g. /usr/share/hunspell/fr_CH.dic -> fr.dic.
# That extra level of indirection somehow breaks spell checking.
# We therefore use readlink to link to the "real" file, not to a symlink.
if [ -e "$SNAP/usr/share/hunspell/${dic_file}" ]; then
ln -s "$(readlink -e $SNAP/usr/share/hunspell/${dic_file})" $DICPATH/${dic_file}
fi
if [ -e "$SNAP/usr/share/hunspell/${aff_file}" ]; then
ln -s "$(readlink -e $SNAP/usr/share/hunspell/${aff_file})" $DICPATH/${aff_file}
fi
done