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101 lines
3.4 KiB
Ruby
101 lines
3.4 KiB
Ruby
# Title: Include Code Tag for Jekyll
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# Author: Brandon Mathis http://brandonmathis.com
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# Description: Import files on your filesystem into any blog post as embedded code snippets with syntax highlighting and a download link.
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# Configuration: You can set default import path in _config.yml (defaults to code_dir: downloads/code)
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#
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# Syntax {% include_code path/to/file %}
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#
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# Example 1:
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# {% include_code javascripts/test.js %}
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#
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# This will import test.js from source/downloads/code/javascripts/test.js
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# and output the contents in a syntax highlighted code block inside a figure,
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# with a figcaption listing the file name and download link
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#
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# Example 2:
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# You can also include an optional title for the <figcaption>
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#
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# {% include_code javascripts/test.js Example 2 %}
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#
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# will output a figcaption with the title: Example 2 (test.js)
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#
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require './plugins/pygments_code'
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require 'pathname'
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module Jekyll
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class IncludeCodeTag < Liquid::Tag
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include HighlightCode
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def initialize(tag_name, markup, tokens)
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@file = nil
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@title_old = nil
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@original_markup = markup
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opts = parse_markup(markup)
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@options = {
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lang: opts[:lang],
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title: opts[:title],
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lineos: opts[:lineos],
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marks: opts[:marks],
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url: opts[:url],
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link_text: opts[:link_text] || 'view raw',
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start: opts[:start] || 1,
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end: opts[:end]
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}
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markup = clean_markup(markup)
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if markup.strip =~ /(^\S*\.\S+) *(.+)?/i
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@file = $1
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@options[:title] ||= $2
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elsif markup.strip =~ /(.*?)(\S*\.\S+)\Z/i # Title before file is deprecated in 2.1
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@title_old = $1
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@file = $2
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end
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super
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end
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def render(context)
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code_dir = (context.registers[:site].config['code_dir'].sub(/^\//,'') || 'downloads/code')
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code_path = (Pathname.new(context.registers[:site].source) + code_dir).expand_path
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filepath = code_path + @file
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unless @title_old.nil?
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@options[:title] ||= @title_old
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puts "### ------------ WARNING ------------ ###"
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puts "This include_code syntax is deprecated "
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puts "Correct syntax: path/to/file.ext [title]"
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puts "Update include for #{filepath}"
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puts "### --------------------------------- ###"
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end
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if File.symlink?(code_path)
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puts "Code directory '#{code_path}' cannot be a symlink"
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return "Code directory '#{code_path}' cannot be a symlink"
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end
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unless filepath.file?
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puts "File #{filepath} could not be found"
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return "File #{filepath} could not be found"
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end
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Dir.chdir(code_path) do
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@options[:lang] ||= filepath.extname.sub('.','')
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@options[:title] = @options[:title] ? "#{@options[:title]} (#{filepath.basename})" : filepath.basename
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@options[:url] ||= "/#{code_dir}/#{@file}"
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code = filepath.read
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code = get_range(code, @options[:start], @options[:end])
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begin
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highlight(code, @options)
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rescue MentosError => e
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markup = "{% include_code #{@original_markup} %}"
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highlight_failed(e, "{% include_code [title] [lang:language] path/to/file [start:#] [end:#] [range:#-#] [mark:#,#-#] [linenos:false] %}", markup, code, filepath)
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end
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end
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end
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end
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end
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Liquid::Template.register_tag('include_code', Jekyll::IncludeCodeTag)
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