Created
August 30, 2020 16:14
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Github styled markdown preview
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| #!/usr/bin/ruby | |
| # Place this file in /usr/local/bin/ | |
| # It uses Github API to generate the HTML from the Markdown | |
| # It includes the Primer CSS stylesheet | |
| # It adds the body class needed and some spacing for the body | |
| # It opens Chrome with the HTML generated | |
| # It deletes the file when you interrupt the process | |
| require 'bundler/inline' | |
| gemfile do | |
| source 'https://rubygems.org' | |
| gem 'httparty' | |
| end | |
| require 'tempfile' | |
| require 'json' | |
| if ARGV[0] == '-h' | |
| puts "Github styled markdown preview.\n\tUsage: `md-preview PATH`.\n\tExample: `md-preview ./README.md`.\nSend a system interrupt CTRL + C to delete the preview file." | |
| return | |
| end | |
| raise 'Missing file path argument. Usage: `md-preview PATH`' unless ARGV[0] | |
| text = File.read(ARGV[0]) | |
| options = { | |
| headers: { | |
| 'Accept' => 'application/vnd.github.v3+json', | |
| 'User-Agent' => 'HTTParty' | |
| }, | |
| body: { text: text }.to_json | |
| } | |
| response = HTTParty.post('https://api.github.com/markdown', options) | |
| raise response.body if response.code != 200 | |
| body = ['<body class="markdown-body" style="width:980px;padding:45px;margin:auto;">', response.body, '</body>'].join | |
| html = ['<head><link href="https://unpkg.com/@primer/css/dist/primer.css" rel="stylesheet"></head>', body].join | |
| Tempfile.open(['readme', '.html']) do |file| | |
| file.write(html) | |
| file.rewind | |
| `open -a 'Google Chrome' #{file.path}` | |
| loop do | |
| end | |
| end |
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