Rake tab completion with caching and namespace support
UPDATE: It now invalidates the cache if you touch lib/tasks/*.rake, for those using it with rails (like me)
There’s a few articles on the net regarding rake tab completion, I had to combine a few of them to get what I wanted:
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#!/usr/bin/env ruby # Complete rake tasks script for bash # Save it somewhere and then add # complete -C path/to/script -o default rake # to your ~/.bashrc # Xavier Shay (http://rhnh.net), combining work from # Francis Hwang ( http://fhwang.net/ ) - http://fhwang.net/rb/rake-complete.rb # Nicholas Seckar <nseckar@gmail.com> - http://www.webtypes.com/2006/03/31/rake-completion-script-that-handles-namespaces # Saimon Moore <saimon@webtypes.com> require 'fileutils' RAKEFILES = ['rakefile', 'Rakefile', 'rakefile.rb', 'Rakefile.rb'] exit 0 unless RAKEFILES.any? { |rf| File.file?(File.join(Dir.pwd, rf)) } exit 0 unless /^rake\b/ =~ ENV["COMP_LINE"] after_match = $' task_match = (after_match.empty? || after_match =~ /\s$/) ? nil : after_match.split.last cache_dir = File.join( ENV['HOME'], '.rake', 'tc_cache' ) FileUtils.mkdir_p cache_dir rakefile = RAKEFILES.detect { |rf| File.file?(File.join(Dir.pwd, rf)) } rakefile_path = File.join( Dir.pwd, rakefile ) cache_file = File.join( cache_dir, rakefile_path.gsub( %r{/}, '_' ) ) if File.exist?( cache_file ) && File.mtime( cache_file ) >= (Dir['lib/tasks/*.rake'] << rakefile).collect {|x| File.mtime(x) }.max task_lines = File.read( cache_file ) else task_lines = `rake --silent --tasks` File.open( cache_file, 'w' ) do |f| f << task_lines; end end tasks = task_lines.split("\n")[1..-1].collect {|line| line.split[1]} tasks = tasks.select {|t| /^#{Regexp.escape task_match}/ =~ t} if task_match # handle namespaces if task_match =~ /^([-\w:]+:)/ upto_last_colon = $1 after_match = $' tasks = tasks.collect { |t| (t =~ /^#{Regexp.escape upto_last_colon}([-\w:]+)$/) ? "#{$1}" : t } end puts tasks exit 0 |
