Commits typos checker hook

commit-msg

#!/usr/bin/env ruby

# 1. Install hunspell
# $ brew install hunspell

# 2. Download a dictionary and install it in a path listed by `hunspell -D`
# $ open http://wiki.services.openoffice.org/wiki/Dictionaries

# 3. Move this file into your repository
# $ mv commit-msg /path/to/repo/.git/hooks
# $ chmod +x /path/to/repo/.git/hooks/commit-msg

# 4. Get mad each time you try to commit
# $ git commit -m "Fix some spelling erorrs in the layout"

class GitSpellCheckeCommit
  def self.locale=(locale)
    @@locale = locale
  end

  def initialize(file)
    @file = file
  end

  def validate!
    @check = `cat #{@file} | LC_ALL=#{@@locale} hunspell`
  end

  def valid?
    validate! =~ /&/ ? false : true
  end

  def spelling_errors
    @check.split("\n").select{ |line| line =~ /^&/ }.map do |line|
      matches = line.match(/^&\s([^\s]+)\s\d+\s\d+:\s(.+)$/)
      "- You used “#{matches[1]}” and hunspell suggested instead “#{matches[2]}”"
    end
  end
end

class String
  def black;          "\033[30m#{self}\033[0m" end
  def red;            "\033[31m#{self}\033[0m" end
  def green;          "\033[32m#{self}\033[0m" end
  def brown;          "\033[33m#{self}\033[0m" end
  def blue;           "\033[34m#{self}\033[0m" end
  def magenta;        "\033[35m#{self}\033[0m" end
  def cyan;           "\033[36m#{self}\033[0m" end
  def gray;           "\033[37m#{self}\033[0m" end
  def bg_black;       "\033[40m#{self}\033[0m" end
  def bg_red;         "\033[41m#{self}\033[0m" end
  def bg_green;       "\033[42m#{self}\033[0m" end
  def bg_brown;       "\033[43m#{self}\033[0m" end
  def bg_blue;        "\033[44m#{self}\033[0m" end
  def bg_magenta;     "\033[45m#{self}\033[0m" end
  def bg_cyan;        "\033[46m#{self}\033[0m" end
  def bg_gray;        "\033[47m#{self}\033[0m" end
  def bold;           "\033[1m#{self}\033[22m" end
  def reverse_color;  "\033[7m#{self}\033[27m" end
end

GitSpellCheckeCommit.locale = :en_US
commit = GitSpellCheckeCommit.new(ARGV.first)

unless commit.valid?
   puts "---------------------------------------------------------------------".red
   puts "It looks like you have spell checking errors in your commit message:".red
   puts commit.spelling_errors.join("\n").green
   puts "---------------------------------------------------------------------".red
   # exit 1 # uncomment this line if you want block this commit
end

exit 0