capistrano/capistrano

validate :application do |_key, value|
  changed_value = value.gsub(/[^A-Z0-9\.\-]/i, "_")
  if value != changed_value
    warn %Q(The :application value "#{value}" is invalid!)
    warn "Use only letters, numbers, hyphens, dots, and underscores. For example:"
    warn "  set :application, '#{changed_value}'"
    raise Capistrano::ValidationError
  end
end

%i(git_strategy hg_strategy svn_strategy).each do |strategy|
  validate(strategy) do |key, _value|
    warn(
      "[Deprecation Warning] #{key} is deprecated and will be removed in "\
      "Capistrano 3.7.0.\n"\
      "https://github.com/capistrano/capistrano/blob/master/UPGRADING-3.7.md"
    )
  end
end

# We use a special :_default_git value so that SCMResolver can tell whether the
# default has been replaced by the user via `set`.
set_if_empty :scm, Capistrano::Configuration::SCMResolver::DEFAULT_GIT
set_if_empty :branch, "master"
set_if_empty :deploy_to, -> { "/var/www/#{fetch(:application)}" }
set_if_empty :tmp_dir, "/tmp"

set_if_empty :default_env, {}
set_if_empty :keep_releases, 5

set_if_empty :format, :airbrussh
set_if_empty :log_level, :debug

set_if_empty :pty, false

set_if_empty :local_user, -> { ENV["USER"] || ENV["LOGNAME"] || ENV["USERNAME"] }