Refactor

Signed-off-by: Oliver Davies <oliver@oliverdavies.uk>

zet

@@ -122,6 +122,10 @@ generate_links() {
   done | sort
 }
 
+get_zet_id_from_filename() {
+  basename "$(dirname "$file")"
+}
+
 main() {
   [[ $# -eq 0 ]] && show_titles && exit
 
@@ -159,10 +163,10 @@ run_git_command() {
 
 search_zets() {
   grep --recursive --ignore-case --files-with-matches "$*" "$ZET_DIR" | while read -r file; do
-    date=$(basename "$(dirname "$file")")
+    id="$(get_zet_id_from_filename "$file")"
     title=$(head -1 "$file" | sed 's/^= //' | sed 's/# //')
 
-    echo "$date $title"
+    echo "$id $title"
   done | sort
 }
 
@@ -184,7 +188,7 @@ show_zet() {
 
 update_zet_list() {
   find "$ZET_DIR" -type f -name 'index.adoc' | while read -r filename; do
-    id=$(basename "$(dirname "$filename")")
+    id="$(get_zet_id_from_filename "$file")"
     title=$(head -n 1 "$filename" | sed 's/^= //' | sed 's/^# //')
 
     echo "$id $title"