Contents

require "simple-service"
require_relative "./rack"

module Simple::Httpd::Mount
  extend self

  def build(arg, at:)
    if at
      entity, mount_point = arg, at
    else
      # The regexp below uses negative lookbehind and negative lookahead to
      # only match single colons, but not double (or more) colons. See
      # `ri Regexp` for details.
      entity, mount_point = *arg.split(/(?<!:):(?!:)/, 2)
    end

    mount_point = normalize_and_verify_mount_point(mount_point)

    PathMount.build(mount_point, path: entity) ||
      raise(ArgumentError, "#{mount_point}: don't know how to mount #{entity.inspect}")
  end

  private

  def normalize_and_verify_mount_point(mount_point)
    mount_point ||= "/"                           # fall back to "/"
    mount_point = File.join("/", mount_point)     # make sure we start at "/"

    canary_url = "http://0.0.0.0#{mount_point}"   # verify mount_point: can it be used to build a URL?
    URI.parse canary_url

    mount_point
  end

  class PathMount
    Rack = ::Simple::Httpd::Rack

    attr_reader :path, :mount_point

    def self.build(mount_point, path:)
      mount_point = mount_point.gsub(/\/.$/, "/") # shorting trailing "/." to "/"
      path        = path.gsub(/\/$/, "")          # remove trailing "/"

      raise ArgumentError, "You probably don't want to mount your root directory, check mount" if path == ""
      return unless Dir.exist?(path)

      new(mount_point, path)
    end

    def initialize(mount_point, path)
      @mount_point, @path = mount_point, path
    end

    def route_descriptions
      build_rack_apps.inject([]) do |ary, app|
        ary.concat app.route_descriptions
      end
    end

    def build_rack_apps
      return @build_rack_apps if @build_rack_apps

      dynamic_mount = Rack::DynamicMount.build(mount_point, path)
      static_mount = Rack::StaticMount.build(mount_point, path)

      @build_rack_apps = [dynamic_mount, static_mount].compact
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
simple-httpd-0.4.3	lib/simple/httpd/mount.rb
simple-httpd-0.4.2	lib/simple/httpd/mount.rb