Diffed

This is a library for creating HTML from a unified diff string. Currently the only use-case I am building is for retrieving diffs from p4 describe -du 123456 and sending the HTML in an e-mail. Hopefully I can generalise the problem to add other use-cases.

Add this line to your application's Gemfile:

gem 'diffed'

And then execute:

$ bundle

Or install it yourself as:

$ gem install diffed

Assuming you have a unified diff output in a string called diff_output, you can format it like this:

require 'diffed'

html = Diffed::Diff.new(diff_output).as_html_table

By default, this will print the HTML table with inline CSS styles (e.g., style="color: #FDD"), for maximum compatibility when sending HTML e-mails and for inclusion in other HTML documents without having to load separate stylesheets.

If you'd like to style the HTML yourself, you can have the table render with CSS classes instead of inline styles, like so:

html = Diffed::Diff.new(diff_output).as_html_table(false)

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request