move sample examples out of config, show USAGE if no examples

1 files changed, 14 insertions, 3 deletions

diff --git a/ariketa.sh b/ariketa.sh
index 658588f..38ac242 100644
--- a/ariketa.sh
+++ b/ariketa.sh
@@ -27,6 +27,20 @@ _sourced? || {
 
 ARIKETA_DIR=$(_ariketa.dir)
 
+# load examples array
+source "${ARIKETA_DIR:?}/config/examples.sh"
+
+# if examples array has no content, bail with USAGE text
+(( ${#_examples[@]} )) || {
+    >&2 printf "**  %s\n" \
+        "" ""\
+        "$(declare -p _examples)"\
+        "_examples array needs content -- see 'configuration' below"\
+        "" ""
+    _ariketa.help
+    return $?
+}
+
 # preserve multiline commands as such in history
 shopt -s lithist
 
@@ -39,8 +53,5 @@ source "${ARIKETA_DIR:?}/lib/functions.sh"
 # set up bash macros to page through examples
 source "${ARIKETA_DIR:?}/lib/bindings.sh"
 
-# load examples array
-source "${ARIKETA_DIR:?}/config/examples.sh"
-
 # unset example index/directionality markers
 unset _I _D