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#!/bin/sh
# This script migrates Naev's data from the deprecated ~/.naev directory
# into a number of XDG-compliant directories. It aims to avoid data loss
# by only migrating explicitly Naev-owned files.
# Set defaults if XDG variables aren't defined.
test -z "$XDG_DATA_HOME" && XDG_DATA_HOME=$HOME/.local/share
test -z "$XDG_CONFIG_HOME" && XDG_CONFIG_HOME=$HOME/.config
test -z "$XDG_CACHE_HOME" && XDG_CACHE_HOME=$HOME/.cache
# ~/.naev must exist.
test -d "$HOME/.naev" || exit
# Handle weird cases where ~/.naev isn't readable/executable.
cd "$HOME/.naev" || exit
if mkdir -p "$XDG_DATA_HOME/naev"; then
# Attempt to migrate each save, but don't overwrite existing ones.
if test -d saves/ && mkdir -p "$XDG_DATA_HOME/naev/saves"; then
mv -n saves/*.ns "$XDG_DATA_HOME/naev/saves/"
stat *.ns.backup >/dev/null 2>&1 && mv -n saves/*.ns.backup "$XDG_DATA_HOME/naev/saves"
fi
# Screenshots are numbered from zero, so old screenshots cannot coexist with new ones.
test -d screenshots/ && mv -n screenshots/ "$XDG_DATA_HOME/naev/"
fi
# Naev writes the config on exit. Clobber if necessary.
if mkdir -p "$XDG_CONFIG_HOME/naev"; then
test -r conf.lua && mv conf.lua "$XDG_CONFIG_HOME/naev/"
test -r conf.lua.backup && mv conf.lua.backup "$XDG_CONFIG_HOME/naev/"
fi
# Nebula images are generated on first-run if absent; we'll clobber the new ones if necessary.
if test -d gen/ && mkdir -p "$XDG_CACHE_HOME/naev/nebula"; then
mv gen/nebu_bg_*.png "$XDG_CACHE_HOME/naev/nebula/"
fi
# Clean up if nothing remains.
for dir in saves screenshots gen; do
test -d "$dir" && rmdir --ignore-fail-on-non-empty "$dir/"
done
rmdir --ignore-fail-on-non-empty "$HOME/.naev/"