class BBS::Renderer

Renders the ERB screens of a flow: <name>.erb files in a screens directory, evaluated in a Renderer::Context that offers colour and banner helpers.

Public Class Methods

render (name, vars = {}, dir: BBS.config.screens_dir)

Source

# File lib/bbs/renderer.rb, line 22
def self.render(name, vars = {}, dir: BBS.config.screens_dir)
  raise 'No screens_dir: set BBS.config.screens_dir or the flow\'s screens_dir' unless dir
  path = File.join(dir, "#{name}.erb")
  ctx  = Context.new(vars)
  ERB.new(File.read(path), trim_mode: '-').result(ctx.ctx_binding).gsub("\n", Ansi::CRLF)
end

Reads <name>.erb from dir, evaluates it with vars as instance variables ({ user: 'x' } becomes +@user+) and returns the result with every LF turned into CRLF. ERB trim mode '-' is on.

name: the screen name, without the .erb extension
vars: Hash of values the template sees as instance variables
dir: the screens directory; default BBS.config.screens_dir

Raises RuntimeError when dir is nil, and Errno::ENOENT when the file does not exist.