secret self packager

shell/select-option.sh

@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 
+## Function start
 function select_option {
     local nformat
     local optcount=$#
@@ -142,6 +143,7 @@ function select_option {
 
     return $(( $returnvalue + 10 ))
 }
+## Function end
 
 [[ $_ == $0 ]] && {
 _help() {
@@ -190,6 +192,15 @@ _help() {
 "
   exit
 }
+_package_self() {
+  grep ^SELECT_ "$0"
+  printf "source <( echo '"
+  awk '/^## Function start/{flag=1;next}/^## Function end/{flag=0}flag' "$0" | \
+    base64 -w 0
+  printf "' | base64 -d )\n"
+  printf 'select_option one two three || choice=$(( $? - 9 ))\n'
+}
+
 
 SELECT_MONOCHROME=0
 SELECT_NUMBERS=0
@@ -206,6 +217,7 @@ for (( i=1; i<=$#; i++ )); do
   [[ "$value" = "-n" ]] && { SELECT_NUMBERS=1; continue; }
   [[ "$value" = "-_" ]] && { SELECT_UNDERSCORES=1; continue; }
   [[ "$value" = "-o" ]] && { SELECT_TOFILE="${!j}"; ((i++)); continue; }
+  [[ "$value" = "--package" ]] && { _package_self; exit; }
   opts+=( "$value" )
 done