Mark active preset when listing.

wled

@@ -8,7 +8,7 @@
 
 NAME="wled.sh"
 COMMAND="wled"
-VERSION="0.1.0"
+VERSION="0.1.1"
 
 print_usage() {
     echo "\
@@ -35,6 +35,15 @@ curl_cmd() {
     curl --silent --show-error --fail --ipv4 --max-filesize 32K "$@"
 }
 
+active_preset() {
+    # Find number of active preset. API returns -1 if none is active, we return
+    # an empty string.
+    preset="$(curl_cmd "http://$1/json" | \
+        # -1 will be a no-match.
+        sed -n 's/.*"ps"[[:space:]]*:[[:space:]]*\(1\?[0-9]\).*/\1/p')"
+    printf '%u' "$preset"
+}
+
 # Parse host argument.
 case "$1" in
     ""|-h|--help) # Missing host parameter.
@@ -87,13 +96,19 @@ case "$2" in
     ;;
     l|list) # List presets.
         printf "loading ...\r"
+        active_ps=$(active_preset "$wled_host")
         curl_cmd "http://$wled_host/presets.json" | \
             # Split into lines - one line per preset. Append final newline.
             sed --sandbox 's/"\(1\?[0-9]\)"[[:space:]]*:/\n&/g; $a\ ' | \
-            # Extract number and name of every preset. Prepend description.
+            # Prepend description, extract number and name of every preset,
+            # match active preset, right-align numbers and finally select
+            # lines to print.
             sed --sandbox -n \
-                -e 's/^"\(1\?[0-9]\)"[[:space:]]*:.*"n"[[:space:]]*:[[:space:]]*"\([[:print:]]*\)".*$/\1: \2/p' \
-                -e "1i\\Presets on $wled_host:"
+                -e "1i\\Presets on $wled_host:" \
+                -e 's/^"\(1\?[0-9]\)"[[:space:]]*:.*"n"[[:space:]]*:[[:space:]]*"\([[:print:]]*\)".*$/\1: \2/' \
+                -e "s/^$active_ps:.*/& */" \
+                -e 's/^[0-9]:/ &/' \
+                -e '/^[1 ]\?[0-9]: [[:print:]]\+/p'
         exit $?
     ;;
     dump) # Dump JSON response from API.