utils upgrade

utils/.local/bin/serve

@@ -1,23 +1,36 @@
 #!/usr/bin/env bash
 set -eo pipefail
 
-port='8888'
-if [ $# -eq 1 ]; then
-  port="$1"
+if [[ "$1" == "-h" || "$1" == "--help" ]]; then
+    cat <<EOF
+Usage: $(basename "$0") [-h] [port]
+
+Start a simple HTTP server in current directory.
+
+Options:
+    -h, --help    Show this help message
+
+Arguments:
+    port          Port number (default: 8888)
+
+EOF
+    exit 0
 fi
 
+port="${1:-8888}"
+
 if hash php 2>/dev/null; then
-  exec php -S "localhost:$port"
+    exec php -S "localhost:$port"
 elif hash python3 2>/dev/null; then
-  exec python3 -m http.server "$port"
+    exec python3 -m http.server "$port"
 elif hash python 2>/dev/null; then
-  major_version="$(python -c 'import platform as p;print(p.python_version_tuple()[0])')"
-  if [[ "$major_version" == '3' ]]; then
-    exec python -m http.server "$port"
-  else
-    exec python -m SimpleHTTPServer "$port"
-  fi
+    major_version="$(python -c 'import platform as p;print(p.python_version_tuple()[0])')"
+    if [[ "$major_version" == '3' ]]; then
+        exec python -m http.server "$port"
+    else
+        exec python -m SimpleHTTPServer "$port"
+    fi
 else
-  echo 'unable to start HTTP server' 1>&2
-  exit 1
+    echo 'unable to start HTTP server' 1>&2
+    exit 1
 fi