Class: Playgroundbook::MarkdownWrapper

Inherits:
Object
  • Object
show all
Defined in:
lib/wrapper/markdown_wrapper.rb

Overview

Converts a Markdown file into a Swift Playground Needs to:

- Switch out code from being in  a block to being a root element
- Comment out non-code comments
- Embed images inside the Resources Dir

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(source, name) ⇒ MarkdownWrapper

Returns a new instance of MarkdownWrapper.



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# File 'lib/wrapper/markdown_wrapper.rb', line 14

def initialize(source, name)
  self.source = source
  self.name = name
  self.playground_contents = File.read(source)
end

Instance Attribute Details

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/wrapper/markdown_wrapper.rb', line 12

def name
  @name
end

#playground_contents ⇒ Object

Returns the value of attribute playground_contents.



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# File 'lib/wrapper/markdown_wrapper.rb', line 12

def playground_contents
  @playground_contents
end

#source ⇒ Object

Returns the value of attribute source.



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# File 'lib/wrapper/markdown_wrapper.rb', line 12

def source
  @source
end

Instance Method Details

#create_a_playground_wrapper(file_content, images) ⇒ Object 



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# File 'lib/wrapper/markdown_wrapper.rb', line 37

def create_a_playground_wrapper(file_content, images)
  folder = File.dirname(source)
  playground = File.join(folder, name + ".playground")

  FileUtils.rm_r(playground) if Dir.exist?(playground)
  Dir.mkdir(playground)

  xcplayground = <<-XML
<?xml version='1.0' encoding='UTF-8' standalone='yes'?>
<playground version='5.0' target-platform='osx' display-mode='rendered'>
<timeline fileName='timeline.xctimeline'/>
</playground>
XML

  timeline = <<-XML
<?xml version="1.0" encoding="UTF-8"?>
<Timeline
   version = "3.0">
   <TimelineItems>
   </TimelineItems>
</Timeline>
XML
  File.write(File.join(playground, "contents.xcplayground"), xcplayground)
  File.write(File.join(playground, "timeline.xctimeline"), timeline)

  resources = File.join(playground, "Resources")
  Dir.mkdir(resources)

  images.each do |image|
    outer_image_path = File.join(folder, image)
    local = File.exist? outer_image_path
    remote = image.include? "http"

    if local
      basedir = File.dirname(image)
      inner_basedir = File.join(resources, basedir)
      Dir.mkdir(inner_basedir) unless Dir.exist?(inner_basedir)
      FileUtils.cp(outer_image_path, inner_basedir)

    elsif remote
      file = File.open(File.join(resources, File.basename(image)), "wb")
      file.write(open(image, "rb").read)
      file_content.gsub!(image, File.basename(image))
    end
  end

  File.write(File.join(playground, "Contents.swift"), file_content)
end

#generate ⇒ Object 



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# File 'lib/wrapper/markdown_wrapper.rb', line 20

def generate
  contents = swap_code_context(playground_contents)
  images = get_list_of_images(contents)
  create_a_playground_wrapper(contents, images)
end

#get_list_of_images(file_content) ⇒ Object 



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# File 'lib/wrapper/markdown_wrapper.rb', line 33

def get_list_of_images(file_content)
  file_content.scan(/\!\[.*\]\((.*?)\)/).flatten
end

#swap_code_context(file_content) ⇒ Object 



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# File 'lib/wrapper/markdown_wrapper.rb', line 26

def swap_code_context(file_content)
  prefix = "import Foundation\n/*:\n"
  suffix = "*/"
  content = file_content.gsub("```swift", "*/\n").gsub("```", "/*:")
  prefix + content + suffix
end