From c6163da5e4f0cc6587e218944641eb6d9a5faacd Mon Sep 17 00:00:00 2001
From: redxef <federanko.manuel@gmail.com>
Date: Thu, 8 Jun 2023 16:47:31 +0200
Subject: [PATCH] Add config parsing.

---
 tarback.sh | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/tarback.sh b/tarback.sh
index b187d0a..e529a72 100755
--- a/tarback.sh
+++ b/tarback.sh
@@ -2,8 +2,10 @@
 
 set -eu
 
-XDG_DATA_HOME="${XDG_DATA_HOME:-$HOME/.local/share}"
-XDG_DATA_DIRS="${XDG_DATA_DIRS:-/usr/local/share:/usr/share}"
+_="${XDG_DATA_HOME:=$HOME/.local/share}"
+_="${XDG_DATA_DIRS:=/usr/local/share:/usr/share}"
+_="${XDG_CONFIG_HOME:=$HOME/.config}"
+_="${XDG_CONFIG_DIRS:=/etc}"
 
 TARBACK_REMOTE_DEFAULT=
 TARBACK_TRANSFORM_REMOTE_COMMAND_DEFAULT=
@@ -22,7 +24,19 @@ TARBACK_COMPRESSION_DEFAULT='xz'
 TARBACK_SPLIT_DEFAULT="split -b $((128*1024*1024)) -"
 TARBACK_MERGE_DEFAULT='cat'
 TARBACK_PLUGIN_SEARCH_PATH_DEFAULT="$(dirname "$0"):$XDG_DATA_HOME:$XDG_DATA_DIRS"
+TARBACK_CONFIG_SEARCH_PATH_DEFAULT="$(dirname "$0"):$XDG_CONFIG_HOME:$XDG_CONFIG_DIRS"
 
+_="${TARBACK_PLUGIN_SEARCH_PATH:=$TARBACK_PLUGIN_SEARCH_PATH_DEFAULT}"
+_="${TARBACK_CONFIG_SEARCH_PATH:=$TARBACK_CONFIG_SEARCH_PATH_DEFAULT}"
+TARBACK_PLUGIN_SEARCH_PATH="$(echo "$TARBACK_PLUGIN_SEARCH_PATH" | tr ':'  '\n')"
+TARBACK_CONFIG_SEARCH_PATH="$(echo "$TARBACK_CONFIG_SEARCH_PATH" | tr ':'  '\n' | tac)"
+
+# load configs
+for config_dir in $TARBACK_CONFIG_SEARCH_PATH; do
+    config_file="$config_dir/tarback/config.sh"
+    [ ! -f "$config_file" ] && continue
+    . "$config_file"
+done
 
 # example: TARBACK_REMOTE="ssh myuser@myserver" ./tarback ...
 TARBACK_REMOTE="${TARBACK_REMOTE:-$TARBACK_REMOTE_DEFAULT}"
@@ -39,8 +53,6 @@ _="${TARBACK_TAR_EXTRACT_USE_ALT_COMMAND:=$TARBACK_TAR_EXTRACT_USE_ALT_COMMAND_D
 _="${TARBACK_COMPRESSION:=$TARBACK_COMPRESSION_DEFAULT}"
 _="${TARBACK_SPLIT:=$TARBACK_SPLIT_DEFAULT}"
 _="${TARBACK_MERGE:=$TARBACK_MERGE_DEFAULT}"
-_="${TARBACK_PLUGIN_SEARCH_PATH:=$TARBACK_PLUGIN_SEARCH_PATH_DEFAULT}"
-TARBACK_PLUGIN_SEARCH_PATH="$(echo "$TARBACK_PLUGIN_SEARCH_PATH" | tr ':'  '\n')"
 
 _transform_split_name() {
     command_name="$(echo "$TARBACK_SPLIT" | awk '{print $1}')"