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69 lines
2.2 KiB
Ruby
69 lines
2.2 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 Example 2 javascripts/test.js %}
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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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@title = nil
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@file = nil
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if markup.strip =~ /(.*)?(\s+|^)(\/*\S+)/i
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@title = $1 || nil
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@file = $3
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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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file = code_path + @file
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if File.symlink?(code_path)
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return "Code directory '#{code_path}' cannot be a symlink"
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end
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unless file.file?
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return "File #{file} could not be found"
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end
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Dir.chdir(code_path) do
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code = file.read
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@filetype = file.extname.sub('.','')
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@filetype = 'objc' if @filetype == 'm'
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@filetype = 'perl' if @filetype == 'pl'
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title = @title ? "#{@title} (#{file.basename})" : file.basename
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url = "#{context.registers[:site].config['url']}/#{code_dir}/#{@file}"
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source = "<div><figure role=code><figcaption><span>#{title}</span> <a href='#{url}'>download</a></figcaption>\n"
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source += " #{highlight(code, @filetype)}</figure></div>"
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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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