Formatting ruby hashes in VIM
I’ve been meaning to write this script for a while. If you’re anal about your whitespace (like I), you’ll often pretty up your ruby hashes to make them easy to read by adding a bit of whitespace to the keys before the =>. I wrote a ruby script to do this automatically!
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#!/usr/bin/env ruby # format_hash.rb # # Formats ruby hashes # a => 1 # ab => 2 # abc => 3 # # becomes # a => 1 # ab => 2 # abc => 3 # # http://rhnh.net lines = [] while line = gets lines << line end indent = lines.first.index(/[^\s]/) # Massage into an array of [key, value] lines.collect! {|line| line.split('=>').collect {|line| line.gsub(/^\s*/, '').gsub(/\s*$/, '') } } max_key_length = lines.collect {|line| line[0].length}.max # Pad each key with whitespace to match length of longest key lines.collect! {|line| line[0] = "%#{indent}s%-#{max_key_length}s" % ['', line[0]] line.join(' => ') } print lines.join("\n") |
Put that in your path, then in VIM you can run the following command to format the current selection:
:‘<,’>!format_hash.rb
- Or map F2 to do it for you…
:vmap <F2> !format_hash.rb<CR>
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