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| #!/usr/bin/env ruby | |
| # Bonus: place in PATH and use from the command line. | |
| # Usage: | |
| # find path -type f | xargs ruby highlight.rb | |
| # gem contents metric_fu | grep lib | xargs ruby highlight.rb | |
| # The highlighted code will be output to 'output.html' in the working directory | |
| require 'coderay' | |
| class Highlighter | |
| def initialize | |
| # import css classes from alpha style | |
| @css = CodeRay::Styles::Alpha::CSS_MAIN_STYLES << "\n" << CodeRay::Styles::Alpha::TOKEN_COLORS | |
| end | |
| def highlight_file(filename) | |
| text = File.binread(filename) | |
| highlight(text) | |
| end | |
| def highlight(text) | |
| CodeRay.scan(text, :ruby).div(css: :class, style: :alpha, line_numbers: :table, line_number_start: 0) | |
| end | |
| def highlight_files(filenames) | |
| filenames.map do |filename| | |
| "<br>#{filename}<br>" << highlight_file(filename) | |
| end.join("\n<br>") | |
| end | |
| def write_html(inner_html, output_filename) | |
| File.open(output_filename, 'w') do |output| | |
| output.write "<html><head><style>#{@css}</style></head><body>" | |
| output.write inner_html | |
| output.write "</body></html>" | |
| end | |
| end | |
| end | |
| if $0 == __FILE__ | |
| hl = Highlighter.new | |
| inner_html = hl.highlight_files(ARGV.to_a) | |
| hl.write_html(inner_html, 'output.html') | |
| end |
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