Ruby four-liner for uploading web site from Hugo to FTP

upload.rb

# upload.rb URL [SINCE]
#
# Uploads website generated by Hugo (or other static web site generator) to the URL using wput.
#
# URL       URL of ftp server, including user name and password
#           (e.g. ftp://USER:PASSWORD@site.com/public_html/)
#
# SINCE     upload files changed since this git revision
#           if not specified, HEAD^ is used, i.e. the latest changes are uploaded
#
# Assumes that generated web pages are checked into git (you probably want to do that
# anyway so you can track changes when you update the Hugo version, change layouts, etc).
#
# Assumes that generated web pages are found in the "public/" directory.

URL = ARGV[0] or raise "URL needed (ftp://USER:PASSWORD@site.com/public_html/)"
SINCE = ARGV[1] || "HEAD^"
MODIFIED = `git diff --name-only #{SINCE}`.lines.map {|x| x.strip}.select{|x| x[/^public/]}.join(" ")
system("wput -u --basename=public/ #{MODIFIED} #{URL}")