Class: Jekyll::WikiLinks::Parser

Inherits:
Object
  • Object
show all
Includes:
Filters::URLFilters
Defined in:
lib/jekyll-wikilinks/util/parser.rb

Overview

more of a “parser” than a parser

Constant Summary collapse

CONVERTER_CLASS = 
Jekyll::Converters::Markdown

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(site) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/jekyll-wikilinks/util/parser.rb', line 17

def initialize(site)
  @context ||= Jekyll::WikiLinks::Context.new(site)
  # do not use @dm in parser -- it is only meant to be passed down into wikilink classes. 
  @doc_manager ||= site.doc_mngr
  @markdown_converter ||= site.find_converter_instance(CONVERTER_CLASS)
  @wikilink_blocks, @wikilink_inlines = [], []
end

Instance Attribute Details

#doc_manager ⇒ Object

Returns the value of attribute doc_manager.



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# File 'lib/jekyll-wikilinks/util/parser.rb', line 10

def doc_manager
  @doc_manager
end

#markdown_converter ⇒ Object

Returns the value of attribute markdown_converter.



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# File 'lib/jekyll-wikilinks/util/parser.rb', line 10

def markdown_converter
  @markdown_converter
end

#wikilink_blocks ⇒ Object

Returns the value of attribute wikilink_blocks.



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# File 'lib/jekyll-wikilinks/util/parser.rb', line 10

def wikilink_blocks
  @wikilink_blocks
end

#wikilink_inlines ⇒ Object

Returns the value of attribute wikilink_inlines.



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# File 'lib/jekyll-wikilinks/util/parser.rb', line 10

def wikilink_inlines
  @wikilink_inlines
end

Instance Method Details

#build_html(wikilink) ⇒ Object 



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# File 'lib/jekyll-wikilinks/util/parser.rb', line 119

def build_html(wikilink)
    if !wikilink.is_valid?
      return '<span class="' + $wiki_conf.css_name("invalid_wiki") + '">' + wikilink.md_str + '</span>'
    end
    # image processing
    if wikilink.embedded? && wikilink.is_img?
      return build_html_img_embed(wikilink.linked_img, is_svg=wikilink.is_img_svg?)
    end
    # markdown file processing
    linked_doc = wikilink.linked_doc
    link_type_txt = wikilink.is_typed? ? " #{$wiki_conf.css_name("typed")} #{wikilink.link_type}" : ""
    lnk_doc_rel_url = relative_url(linked_doc.url)
    if wikilink.labelled?
      inner_txt = wikilink.label_txt
    elsif linked_doc.data.keys.include?('title')
      inner_txt = linked_doc.data['title'].downcase
    # in case there is no 'title' frontmatter attribute 
    # (i'm seeing deprecation warnings, but there might 
    #  be bugs caused by not using this...)
    elsif linked_doc.respond_to?(:title)
      inner_txt = linked_doc.title.downcase
    # pages don't have automatically generated titles
    else
      inner_txt = Jekyll::Utils.slugify(linked_doc.basename)
    end
    # level-specific
    if (wikilink.level == "file_path" || wikilink.level == "filename")
      return build_html_embed(
        linked_doc.title,
        linked_doc.content,
        lnk_doc_rel_url
      ) if wikilink.embedded?
    elsif (wikilink.level == "header")
      # from: https://github.com/jekyll/jekyll/blob/6855200ebda6c0e33f487da69e4e02ec3d8286b7/Rakefile#L74
      lnk_doc_rel_url += "\#" + Jekyll::Utils.slugify(wikilink.header_txt)
      inner_txt += " > #{wikilink.header_txt.downcase}" if !wikilink.labelled?
    elsif (wikilink.level == "block")
      lnk_doc_rel_url += "\#" + wikilink.block_id
      inner_txt += " > ^#{wikilink.block_id}" if !wikilink.labelled?
    else
      Jekyll.logger.error("Jekyll-Wikilinks: Invalid wikilink level")
    end
    return '<a class="' + $wiki_conf.css_name("wiki") + link_type_txt + '" href="' + lnk_doc_rel_url + '">' + inner_txt + '</a>'
end

#build_html_embed(title, content, url) ⇒ Object

building/converting



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# File 'lib/jekyll-wikilinks/util/parser.rb', line 92

def build_html_embed(title, content, url)
  # multi-line for readability
  return [
    "<div class=\"#{$wiki_conf.css_name("embed_wrapper")}\">",
      "<div class=\"#{$wiki_conf.css_name("embed_title")}\">",
        "#{title}",
      "</div>",
      "<div class=\"#{$wiki_conf.css_name("embed_content")}\">",
        "#{@markdown_converter.convert(content)}",
      "</div>",
      "<a class=\"#{$wiki_conf.css_name("embed_wiki_link")}\" href=\"#{url}\"></a>",
    "</div>",
  ].join("\n").gsub!("\n", "")
end

#build_html_img_embed(static_doc, is_svg = false) ⇒ Object 



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# File 'lib/jekyll-wikilinks/util/parser.rb', line 107

def build_html_img_embed(static_doc, is_svg=false)
  svg_content = ""
  if is_svg
    File.open(static_doc.path, "r") do |svg_img|
      svg_content = svg_img.read
    end
    return "<p><span class=\"#{$wiki_conf.css_name("embed_image_wrapper")}\">#{svg_content}</span></p>"
  else
    return "<p><span class=\"#{$wiki_conf.css_name("embed_image_wrapper")}\"><img class=\"#{$wiki_conf.css_name("embed_image")}\" src=\"#{relative_url(static_doc.relative_path)}\"></span></p>"
  end
end

#parse(doc_filename, doc_content) ⇒ Object

parsing



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# File 'lib/jekyll-wikilinks/util/parser.rb', line 27

def parse(doc_filename, doc_content)
  @wikilink_blocks, @wikilink_inlines = [], []
  if !$wiki_conf.disabled_attributes?
    self.parse_blocks(doc_filename, doc_content)
  end
  self.parse_inlines(doc_filename, doc_content)
end

#parse_blocks(doc_filename, doc_content) ⇒ Object 



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# File 'lib/jekyll-wikilinks/util/parser.rb', line 35

def parse_blocks(doc_filename, doc_content)
  block_matches = doc_content.scan(REGEX_WIKI_LINK_BLOCKS)
  if !block_matches.nil? && block_matches.size != 0
    block_matches.each do |wl_match|
      # init block wikilink
      wikilink_block = WikiLinkBlock.new(
        @doc_manager,
        doc_filename,
        wl_match[0], # link_type
        wl_match[2], # bullet_type
      )
      # extract + add filenames
      items = wl_match[1]
      filename_matches = items.scan(/#{REGEX_LINK_LEFT}#{REGEX_FILENAME}#{REGEX_LINK_RIGHT}/i)
      filename_matches.each do |match|
        match.each do |fname|
          wikilink_block.add_item(fname)
        end
      end
      # replace text
      doc_content.gsub!(wikilink_block.md_regex, "\n")
      @wikilink_blocks << wikilink_block
    end
  end
end

#parse_inlines(doc_filename, doc_content) ⇒ Object 



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# File 'lib/jekyll-wikilinks/util/parser.rb', line 61

def parse_inlines(doc_filename, doc_content)
  inline_matches = doc_content.scan(REGEX_WIKI_LINK_INLINES)
  if !inline_matches.nil? && inline_matches.size != 0
    inline_matches.each do |wl_match|
      @wikilink_inlines << WikiLinkInline.new(
        @doc_manager,
        doc_filename,
        wl_match[0],
        wl_match[1],
        wl_match[2],
        wl_match[3],
        wl_match[4],
        wl_match[5],
      )
    end
  end
  # replace text
  return if @wikilink_inlines.nil?
  # process typed wikilinks first so we don't accidentally 
  # overwrite them when handling untyped wikilinks
  self.sort_typed_first
  @wikilink_inlines.each do |wikilink|
    doc_content.gsub!(
      wikilink.md_regex,
      self.build_html(wikilink)
    )
  end
end

#sort_typed_first ⇒ Object

helpers



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# File 'lib/jekyll-wikilinks/util/parser.rb', line 166

def sort_typed_first
  # sorting inline wikilinks is necessary so when wikilinks are replaced,
  # longer strings are replaced first so as not to accidentally overwrite 
  # substrings
  # (this is especially likely if there is a matching wikilink that 
  #  appears as both untyped and typed in a document)
  temp = @wikilink_inlines.dup
  @wikilink_inlines.clear()
  typed_wikilinks = temp.select { |wl| wl.is_typed? }
  untyped_wikilinks = temp.select { |wl| !wl.is_typed? }
  @wikilink_inlines = typed_wikilinks.concat(untyped_wikilinks)
end