Class: Fresco::CLI::New

Inherits:
Object
  • Object
show all
Defined in:
lib/fresco/cli/new.rb

Constant Summary collapse

USAGE = 
<<~USAGE
  Usage: fresco new <app_name> [--fresco-path <dir>]

    --fresco-path <dir>   Generate a Gemfile pinned to a path-installed
                          fresco (instead of the rubygems version). Useful
                          during co-development of fresco itself.

  Example:
    fresco new bookshelf
    fresco new bookshelf --fresco-path ../fresco
USAGE

Instance Method Summary collapse

Instance Method Details

#run(argv) ⇒ Object 



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# File 'lib/fresco/cli/new.rb', line 21

def run(argv)
  app_name = nil
  fresco_path = nil
  i = 0
  while i < argv.length
    a = argv[i]
    if a == "--fresco-path"
      fresco_path = argv[i + 1]
      unless fresco_path
        warn "fresco: --fresco-path requires a directory argument"
        return 1
      end
      i += 2
    elsif a.start_with?("-")
      warn "fresco: unknown flag #{a.inspect}"
      warn USAGE
      return 1
    else
      if app_name
        warn "fresco: positional <app_name> already set to #{app_name.inspect}"
        return 1
      end
      app_name = a
      i += 1
    end
  end

  if app_name.nil? || app_name.empty?
    warn USAGE
    return 1
  end

  unless app_name.match?(/\A[a-z][a-z0-9_]*\z/)
    warn "fresco: app name #{app_name.inspect} must be lowercase letters/digits/underscores starting with a letter"
    return 1
  end

  target = File.expand_path(app_name)
  if File.exist?(target)
    warn "fresco: #{target} already exists"
    return 1
  end

  locals = {
    app_name:      app_name,
    module_name:   camelize(app_name),
    fresco_source: fresco_path ? ", path: #{File.expand_path(fresco_path).inspect}" : ", source: \"https://rubygems.org\"",
  }

  FileUtils.mkdir_p(target)
  scaffold_root = Fresco::Paths.generator_root

  copied = 0
  Dir.glob("#{scaffold_root}/**/*", File::FNM_DOTMATCH).sort.each do |src|
    next if src.end_with?("/.", "/..")
    rel = src.sub(/\A#{Regexp.escape(scaffold_root)}\/?/, "")
    next if rel.empty?
    dst = File.join(target, strip_template_suffix(rel))

    if File.directory?(src)
      FileUtils.mkdir_p(dst)
      next
    end

    FileUtils.mkdir_p(File.dirname(dst))
    if src.end_with?(".tt")
      File.write(dst, ERB.new(File.read(src), trim_mode: "-").result_with_hash(locals))
    else
      FileUtils.cp(src, dst)
    end

    # Preserve executable bit for bin/* scripts (cp doesn't strip it,
    # but ERB-rendered .tt files re-create with default 0644). The
    # generator tree doesn't currently put .tt files under bin/, but
    # chmod here makes the rule uniform.
    File.chmod(0o755, dst) if rel.start_with?("bin/")
    copied += 1
  end

  puts "Created #{app_name}/ (#{copied} files)"
  puts ""
  puts "    cd #{app_name}"
  puts "    bundle install"
  puts "    bin/dev"
  puts ""
  0
end