huge longrun improvements

profile.d/fun.sh

@@ -36,35 +36,73 @@
 
 # ------------------------------------------------------------------------------
 # Make non-IT peoples think you're busy doing something hard
-# ------------------------------------------------------------------------------
+# Usage: busy [options] [pattern]
+# Options:
+#   --delay=<ms> : add a delay between each line output (milliseconds)
+#   pattern : the string to search for in the hexdump output (default is "ca fe")
 busy()
 {
-    local pattern="ca fe"
-    for arg in "$@"; do
-        case "$arg" in
-            --delay=*)
-                delay_ms="${arg#*=}"
-                if ! [[ $delay_ms =~ ^[0-9]+$ ]]; then
-                    disp E "Invalid delay value, must be an integer (milliseconds)."
+    local pattern="ca fe" delay_ms=0
+
+    local PARSED
+    # Short: h, p:, d:
+    # Long: help, pattern:, delay:
+    PARSED=$(getopt -o hp:d: --long help,pattern:,delay: -n 'busy' -- "$@")
+    if [[ $? -ne 0 ]]; then
+        disp E "Invalid options, use \"busy --help\" to display usage."
+        return 1
+    fi
+    eval set -- "$PARSED"
+
+    while true; do
+        case "$1" in
+            -h|--help)
+                printf "busy: Monitor /dev/urandom for a specific pattern.\n\n"
+                printf "Usage: busy [options] [pattern]\n\n"
+                printf "Options:\n"
+                printf "\t-h, --help\t\tDisplay this help screen\n"
+                printf "\t-p, --pattern PATTERN\tHex pattern to search (default: \"ca fe\")\n"
+                printf "\t-d, --delay MS\t\tDelay between matches in milliseconds\n"
+                return 0
+                ;;
+            -p|--pattern)
+                pattern="$2"
+                shift 2
+                ;;
+            -d|--delay)
+                delay_ms="$2"
+                if ! [[ "$delay_ms" =~ ^[0-9]+$ ]]; then
+                    disp E "Invalid delay: must be an integer (milliseconds)."
                     return 1
                 fi
+                shift 2
+                ;;
+            --)
+                shift
+                break
                 ;;
             *)
-                pattern="$arg"
+                disp E "Invalid option: $1"
+                return 1
                 ;;
         esac
     done
 
+    # If a pattern was provided as a positional argument (e.g., 'busy "ff 00"'),
+    # it is captured here.
+    [[ -n "$1" ]] && pattern="$1"
+
     # Convert milliseconds to seconds for 'sleep'
     local delay_s=$(awk "BEGIN { printf \"%.3f\", $delay_ms / 1000 }")
 
+    # Monitor /dev/urandom
     cat /dev/urandom | hexdump -C | grep --line-buffered "$pattern" | \
         while read -r line; do
-        echo $line
-        [[ $delay_ms -gt 0 ]] && sleep "$delay_s"
-    done
-    unset pattern
+            echo "$line"
+            [[ $delay_ms -gt 0 ]] && sleep "$delay_s"
+        done
 }
-
 # ------------------------------------------------------------------------------
+
+
 # EOF