Shorten the ybcon shell command script.

scripts/ybcon

@@ -23,11 +23,10 @@ usage() {
 usageExit() {
   usage false
   exit 0
-}
+}; helpExit() { usage true; exit 0; }
 
 args="";
 run=false;
-skipArgsIteration=false;
 
 newArgs() {
   if [ "$args" = "" ]; then
@@ -39,35 +38,33 @@ newArgs() {
 
 if [ "$#" != 0 ]; then
   if [ "$#" = 1 ]; then
-    if [ "$1" = "--version" ]; then
+    case "$1" in
-      run=true
+      -h | --help )
-      args="$1"
+        helpExit ;;
-      skipArgsIteration=true;
+      --version )
-    fi
+        run=true; args="$1" ;;
-  fi
+      *.ybcon )
-  if [ "$skipArgsIteration" = false ]; then
+        newArgs "$1"; run=true ;;
+      * )
+        usageExit ;;
+    esac
+  else
     for it in "$@"
-    do
+      do
-      case "$it" in
+        case "$it" in
-        -h | --help | --version )
+          -p | --printresult | --target=* )
-          if [ "$#" = 1 ]; then usageExit; else
+            if test "${args#*$it}" = "$args"; then
-            usage true; exit 0;
-          fi ;;
-        -p | --printresult | --target=* )
-          if test "${args#*$it}" = "$args"; then
-            if [ "$#" = 1 ]; then usage false; exit 0; else
               newArgs "$it"
-            fi
+            else
-          else
+              usageExit
-            usageExit
+            fi ;;
-          fi ;;
+          *.ybcon )
-        *.ybcon )
+            newArgs "$it"
-          newArgs "$it"
+            run=true ;;
-          run=true ;;
+          * )
-        * )
+            usageExit ;;
-          usageExit ;;
+        esac
-      esac
+      done
-    done
   fi
 else
   usage false
@@ -76,7 +73,7 @@ fi
 runIt() { eval "$1" " $args"; }
 
 if [ "$run" = true ]; then
-  if [ -f $defaultBinLocation ]; then
+  if [ -f "$defaultBinLocation" ]; then
     runIt "$defaultBinLocation"
   elif [ -f ybcon ]; then
     runIt "./ybcon"