Contents

require 'yaml'

module Trackler
  # Problem is a language-independent definition of an exercise.
  class Problem
    attr_reader :slug, :root
    def initialize(slug, root)
      @slug = slug
      @root = root
    end

    def exists?
      !!md && !!yaml
    end

    def name
      @name ||= slug.split('-').map(&:capitalize).join(' ')
    end

    def description
      @description ||= File.read(filepath(md))
    end

    def source_markdown
      body = source.empty? ? "" : "%s" % source
      url = source_url.empty? ? "" : "[%s](%s)" % [source_url, source_url]
      if url.empty? && body.empty?
        ""
      else
        "## Source\n\n" + [body, url].reject(&:empty?).join(" ")
      end
    end

    def md_url
      repo_url(md)
    end

    def json_url
      repo_url(json) if !!json
    end

    def yaml_url
      repo_url(yaml)
    end

    %w(blurb source source_url).each do |name|
      define_method name do
        metadata[name].to_s.strip
      end
    end

    private

    def json
      [
        "exercises/%s/canonical-data.json" % slug,
        "%s.json" % slug,
      ].find { |path| File.exist?(filepath(path)) }
    end

    def yaml
      [
        "exercises/%s/metadata.yml" % slug,
        "%s.yml" % slug,
      ].find { |path| File.exist?(filepath(path)) }
    end

    def md
      [
        "exercises/%s/description.md" % slug,
        "%s.md" % slug,
      ].find { |path| File.exist?(filepath(path)) }
    end

    def repo_url(path)
      "https://github.com/exercism/x-common/blob/master/%s" % path
    end

    def filepath(f)
      File.join(root, "common", f)
    end

    def metadata
      @metadata ||= YAML.load(File.read(filepath(yaml)))
    end
  end
end

Version data entries

23 entries across 23 versions & 1 rubygems

Version	Path
trackler-2.0.1.1	lib/trackler/problem.rb
trackler-2.0.1.0	lib/trackler/problem.rb
trackler-2.0.0.10	lib/trackler/problem.rb
trackler-2.0.0.9	lib/trackler/problem.rb
trackler-2.0.0.8	lib/trackler/problem.rb
trackler-2.0.0.7	lib/trackler/problem.rb
trackler-2.0.0.6	lib/trackler/problem.rb
trackler-2.0.0.5	lib/trackler/problem.rb
trackler-2.0.0.4	lib/trackler/problem.rb
trackler-2.0.0.3	lib/trackler/problem.rb
trackler-2.0.0.2	lib/trackler/problem.rb
trackler-2.0.0.1	lib/trackler/problem.rb
trackler-2.0.0.0	lib/trackler/problem.rb
trackler-1.0.4.1	lib/trackler/problem.rb
trackler-1.0.4.0	lib/trackler/problem.rb
trackler-1.0.3.0	lib/trackler/problem.rb
trackler-1.0.2.1	lib/trackler/problem.rb
trackler-1.0.2.0	lib/trackler/problem.rb
trackler-1.0.1.2	lib/trackler/problem.rb
trackler-1.0.1.1	lib/trackler/problem.rb