Adds prompt to bootstrap steps

.config/yadm/bootstrap

@@ -12,21 +12,64 @@ _repeat() {
   for i in $range; do echo -n "${str}"; done
 }
 
-display() {
-  local value="$1"
+_header() {
+  local length="$1"
   echo -n "/="
-  _repeat ${#value} "="
+  _repeat ${length} "="
   echo "=\\"
-
+}
+_value() {
+  local value="$1"
   echo -n "| "
   echo -n ${value}
   echo " |"
-
+}
+_footer() {
+  local length="$1"
   echo -n "\\="
-  _repeat ${#value} "="
+  _repeat ${length} "="
   echo "=/"
 }
 
+display() {
+  local value="$1"
+  _header ${#value}
+  _value ${value}
+  _footer ${#value}
+}
+
+runfile() {
+  local command="$1"
+  local prompt="Do you wish to run $command? [Yn] "
+  local display="Executing $command"
+
+  local promptLength=$((${#prompt} + 1))
+  local displayLength=${#display}
+
+  local maxWidth=$((promptLength > displayLength ? promptLength : displayLength))
+
+  _header ${maxWidth}
+
+  read -p "| $prompt" -n 1 -r
+  echo " |"
+
+  if [[ $REPLY =~ ^[Nn]$ ]]; then
+    _footer ${maxWidth}
+    return
+  fi
+
+  echo -n "| $display"
+  _repeat $((maxWidth - displayLength)) " "
+  echo " |"
+
+  _footer ${maxWidth}
+
+  if ! "$command"; then
+    echo "Error: bootstrap '$command' failed" >&2
+    exit 1
+  fi
+}
+
 set -eu
 
 # Directory to look for bootstrap executables in
@@ -45,11 +88,6 @@ while IFS= read -r bootstrap; do
 done < <(find -L "$BOOTSTRAP_D" -type f | sort)
 
 for bootstrap in "${bootstraps[@]}"; do
-  display "Executing $bootstrap"
-
-  if ! "$bootstrap"; then
-    echo "Error: bootstrap '$bootstrap' failed" >&2
-    exit 1
-  fi
+  runfile "$bootstrap"
 done
 display "Bootstrap completed"