class Namer

# File lib/namer.rb, line 7
def initialize(args)
  path = Dir.pwd
  args.each do |arg|
    next unless arg.include?(':')
    @from, @to  = arg.split(':')
    rename         unless args.include?('--no-rename')
    replace        unless args.include?('--no-replace')
    rename_remote  unless args.include?('--no-remote')
  end
end

# File lib/namer.rb, line 18
def dir(pattern)
  files =  Dir.glob(pattern, File::FNM_DOTMATCH)
  files -= %w[. ..]
  files.reject { |f| f =~ /^.git/ }
end

# File lib/namer.rb, line 24
def from_regex
  /([^a-zA-Z]|^)#{@from}([^a-zA-Z]|$)/
end

# File lib/namer.rb, line 28
def gsub(str)
  str.gsub(from_regex, "\\1#{@to}\\2")
end

# File lib/namer.rb, line 32
def inline_gsub(str)
  return str unless split_str = str.split(/# -- replace\n/)[1]
  split_str.gsub(/^\s*#\s?/, '')
end

# File lib/namer.rb, line 56
def remote
  `git remote show -n origin`.match(/Push\s+URL:\s+(\S+)/)[1] rescue nil
end

# File lib/namer.rb, line 45
def rename
  files = dir("**/#{@from}*")
  begin
    if a = files.pop
      b = a.split('/')
      b[-1] = gsub(b[-1])
      FileUtils.mv(a, b.join('/'))
    end
  end while files.length > 0
end

# File lib/namer.rb, line 37
def rename_remote
  url = remote
  new_url = gsub(url)
  return if url == new_url
  `git remote rm origin`
  `git remote add origin #{new_url}`
end

# File lib/namer.rb, line 60
def replace
  dir("**/*").each do |path|
    next unless File.file?(path)
    text = File.read(path)
    begin
      text = gsub(text)
      text = inline_gsub(text)
    rescue Exception => e
    ensure
      File.open(path, 'w') { |f| f.write(text) }
    end
  end
end