Add library support

Author: Wes Dean

shell_script_template.bash

@@ -17,13 +17,16 @@
 
 set -euo pipefail
 
-
 ## @var SCRIPT_PATH
 ## @brief path to where the script lives
 declare SCRIPT_PATH
 # shellcheck disable=SC2034
 SCRIPT_PATH="$(cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd -P)"
 
+## @var LIBRARY_PATH
+## @brief location where libraries to be included reside
+declare LIBRARY_PATH
+LIBRARY_PATH="${SCRIPT_PATH}/lib/"
 
 ## @var DEFAULT_WORD
 ## @brief default value for the 'word' CLI parameter
@@ -127,6 +130,24 @@ main() {
   trap die ERR
 
 
+  ###
+  ### If there is a library directory (lib/) relative to the
+  ### script's location by default), then attempt to source
+  ### the *.bash files located there.
+  ###
+
+
+  if [ -n "${LIBRARY_PATH}" ] \
+  && [ -d "${LIBRARY_PATH}" ] ; then
+    for library in "${LIBRARY_PATH}"*.bash ; do
+      if [ -e "${library}" ] ; then
+        # shellcheck disable=SC1090
+        . "${library}"
+      fi
+    done
+  fi
+
+
   ###
   ### set values from their defaults here
   ###