Add support for configuration file

1 files changed, 22 insertions, 0 deletions

diff --git a/nix-script b/nix-script
index 2fec7da..a28858e 100755
--- a/nix-script
+++ b/nix-script
@@ -4,6 +4,7 @@ usage() {
     cat <<EOS >&2
     $(help_synopsis "${BASE_SOURCE[0]}" "[options] <command> <commandoptions>")
 
+    --conf=<path>           Path for alternative nix-script.rc file. Default: ~/.nix-script.rc
     -l | --list-commands    List all available commands
     -v                      Be verbose
     -d                      Debugging output (enables -v)
@@ -13,6 +14,7 @@ $(help_end)
 EOS
 }
 
+RC=~/.nix-script.rc
 LIST_COMMANDS=0
 VERBOSE=0
 
@@ -61,6 +63,13 @@ all_commands() {
 for cmd
 do
     case $cmd in
+    --conf=*)
+        RC=$(echo $cmd | sed 's,^--conf\=,,')
+        dbg "RC = $RC"
+        [[ ! -e $RC ]] && stderr "RC file '$RC' does not exist" && exit 1
+        shift_one_more
+        ;;
+
     "--list-commands" )
         LIST_COMMANDS=1
         shift_one_more
@@ -106,6 +115,19 @@ do
     esac
 done
 
+if [[ ! -f "$RC" ]]
+then
+    dbg "No configuration file, setting up (empty) default values"
+
+    RC_CONFIG=""
+    RC_NIXPKGS=""
+else
+    source $RC
+fi
+
+dbg "RC_CONFIG = '$RC_CONFIG'"
+dbg "RC_NIXPKGS = '$RC_NIXPKGS'"
+
 if [ $LIST_COMMANDS -eq 1 ]
 then
     dbg "Listing commands"