added command line parsing

update_psa

@@ -1,6 +1,7 @@
 #!/bin/bash
 # set -x
 
+source ./general_utils
 source ./log_helpers
 source ./git_helpers
 
@@ -162,18 +163,53 @@ update() {
 
 ###############################################################################
 
-if [ $# -ne 1 ] ; then
-    echo "Usage: $0 filename"  
-    exit 1 
-else
 if [ -z $IFS ]; then
     IFS=$'\n'
 fi
 
-    if read_config "$1" ; then
+readonly PROGRAM=`basename $0`
+readonly VERSION="0.8.0"
+
+config_filename=""
+
+while test $# -gt 0; do
+    case $1 in
+        --file | --fil | --fi | --f | -file | -fil | -fi | -f )
+            __conf_file=yes
+            ;;
+        --help | -hel | --he | --h | '--?' | -help | -hel | -he | -h | '-?' )
+            usage_and_exit 0
+            ;;
+        --version | --versio | --versi | --vers | --ver | --ve | --v | \
+        -version | -versio | -versi | -vers | -ver | -ve | -v )
+            version
+            ;;
+        --dbg | --db | --d | -dbg | -db | -d )
+            set_dbg_level $DEBUG
+            ;; 
+        -*)
+            error "Unrecognized option: $1"
+            ;;
+        *)
+            if [ "$__conf_file" = "yes" ]; then
+                config_filename="$1"
+                __conf_file=""
+            else
+                error "Unrecognized parameter string: $1"
+            fi
+            break
+            ;;
+    esac
+    shift
+done
+
+if ! [ -z "$config_filename" ]; then
+    if read_config "$config_filename" ; then
         # set -x
         if clone_customer_repository $customer_repository_path ; then 
             update 
         fi
     fi
+else
+    error "config-file missing"
 fi