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paulopatto/rubocop_pre_commit_hook

Forked from mpeteuil/rubocop_pre_commit_hook
Last active April 19, 2017 07:49
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Ruby style guide git pre-commit hook using Rubocop as the style guide checker. Only runs on staged ruby files that have been added and/or modified.
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rubocop_pre_commit_hook
#!/usr/bin/env ruby
# http://ruby-doc.org/stdlib-2.0.0/libdoc/English/rdoc/English.html
require 'English'
require 'rubocop'
ADDED_OR_MODIFIED = /^\s*(A|AM|M)\s*/
GIT_COMMAND = "git status --porcelain".freeze
modified_files = `#{GIT_COMMAND}`.split(/\n/)
changed_files = modified_files
.select { |file| file =~ ADDED_OR_MODIFIED } # Check monitored files
.map { |file| file.gsub(ADDED_OR_MODIFIED, '') } # collect modified files names
.select { |file| File.extname(file) == '.rb' } # Check to ruby files (.rb)
.join(' ') # joins files in string
system("rubocop --color #{changed_files}") unless changed_files.empty?
exit $CHILD_STATUS.to_s[-1].to_i
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See https://gist.github.com/mpeteuil/6147292#gistcomment-1733607

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