Class: Html2erb

Inherits:
Object
  • Object
show all
Defined in:
lib/html2erb.rb,
lib/html2erb/version.rb

Constant Summary collapse

VERSION = 
"0.0.1"

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opt = {}) ⇒ Html2erb

Returns a new instance of Html2erb.



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# File 'lib/html2erb.rb', line 9

def initialize(opt = {})
  opt.each do|k, v|
    self.send("#{k}=", v)
  end
end

Instance Attribute Details

#file_suffix ⇒ Object

Returns the value of attribute file_suffix.



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# File 'lib/html2erb.rb', line 7

def file_suffix
  @file_suffix
end

#replace_map ⇒ Object

Returns the value of attribute replace_map.



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# File 'lib/html2erb.rb', line 7

def replace_map
  @replace_map
end

#url_path_map ⇒ Object

Returns the value of attribute url_path_map.



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# File 'lib/html2erb.rb', line 7

def url_path_map
  @url_path_map
end

Instance Method Details

#a_tag(html) ⇒ Object 



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# File 'lib/html2erb.rb', line 62

def a_tag(html)
  html.gsub!(/<a .*?<\/a>/m) do |link|
    tag = Nokogiri::HTML.parse(link, nil, 'utf-8').xpath("//a")[0]
    href, opt = dom_variables('a', tag)

    # <a> タグの中身
    label = inner_html tag
    href  = '""' if href == ''
    case href
    when '"how-to.html"'  then href = 'howto_path'
    when '"psychic.html"' then href = 'fortuneteller_index_path'
    when '"about.html"'   then href = 'about_path'
    when '"index.html"'   then href = 'root_path'
    end
    variables = [label.join(" + "), href, opt]
    variables.delete ''
    "<%= link_to(#{variables.join(", ").strip}) %>"
  end
  html
end

#dom_variables(key, dom) ⇒ Object 



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# File 'lib/html2erb.rb', line 83

def dom_variables(key, dom)
  case key 
  when 'img' then key = 'src'
  when 'a'   then key = 'href'
  end

  opt = {}
  target = ''
  dom.each do|k,v|
    if k == key
      # ここは、html の <img> のパスにあわせて変更しなければいけない
      if key == 'src'
        v = v.sub('/m/img/', 'mobile/')
          .sub(/\Aimg\//, 'mobile/')
          .sub("images/site/", "pc/")
      end

      target = '"' + v + '"'
    else
      opt[k.to_sym] = v if v != ''
    end
  end
  [target, opt.to_pretty_s]
end

#erb_file_path(org_path) ⇒ Object 



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# File 'lib/html2erb.rb', line 30

def erb_file_path(org_path)
  file_name = File.basename(org_path)
  org_file_name = file_name.sub('.html', "#{@file_suffix}.html.erb")
  org_path.sub(file_name, org_file_name)
end

#img_tag(html) ⇒ Object 



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# File 'lib/html2erb.rb', line 53

def img_tag(html)
  html.gsub!(/<img .*?\/>/m) do |link|
    tag = Nokogiri::HTML.parse(link, nil, 'utf-8').xpath("//img")[0]
    variables = dom_variables('img', tag).join(", ")
    "<%= image_tag(#{variables}) %>"
  end
  html
end

#inner_html(dom) ⇒ Object 



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# File 'lib/html2erb.rb', line 108

def inner_html(dom)
  label = []
  dom.children.each do|child|
    case child.name 
    when 'img', 'span', 'text' then label << to_content_tag(child)
    when 'br'                  then label << 'raw("<br>")'
    else
      raise "undefined tag: #{child.name}"
    end
  end

  label.delete ""
  label.length == 0 ? ['""'] : label
end

#replace_tags(html) ⇒ Object 



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# File 'lib/html2erb.rb', line 36

def replace_tags(html)
  src_encoding = NKF.guess(html).to_s
  unless src_encoding == 'UTF-8'
    html.encode!('UTF-8', src_encoding, invalid: :replace, undef: :replace, replace: '?')
    html.gsub! "\r\n", "\n"
  end

  @replace_map.each do |regex, replacement|
    html.sub! regex, replacement 
  end

  a_tag html 
  img_tag html 

  html
end

#run(file_name) ⇒ Object 



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# File 'lib/html2erb.rb', line 15

def run(file_name)
  Dir.glob(file_name).each do |path|
    f = open(path, "r+") 
    html = f.read
    f.close

    erb_file_path = erb_file_path(path)
    f = open(erb_file_path, "w")
    f.write replace_tags(html)
    f.close

    replace_tags(erb_file_path)
  end
end

#to_content_tag(dom) ⇒ Object 



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# File 'lib/html2erb.rb', line 123

def to_content_tag(dom)
  if dom.name == 'text'
    if(dom.to_s =~ /\A\n +\z/)
      return '' 
    else
      return '"' + dom.to_s + '"' 
    end
  end

  if(dom.name == 'img')
    src, opt = dom_variables('img', dom)
    return "image_tag(#{src}, #{opt})"
  end

  opt = {}
  value = ''
  dom.each do|k, v|
    opt[k.to_sym] = v
  end

  if dom.children 
    dom.children.each do |child|
      value << to_content_tag(child)
    end
  end

  variables = [":#{dom.name}", value, opt.to_pretty_s]
  "content_tag(#{variables.join(", ").strip})"
end