Array of absolute file paths

files.rb

# Recursively get absolute paths of the files with specified extension in specified directory
#
# @param ext [String] extension of the files to look for (default - any extension)
# @param pwd [String] absolute or relative path where to look for the files (default - current directory)
# @param list [Array<String>] used to recursively store absolute paths (default - [])
# @return [Array<String>] Array array of absolute paths of files in the directory with specified extension
def files(ext = '.*', pwd = Dir.pwd, list = [])
  Dir[File.expand_path(File.join(pwd, '*'))].each do |path|
    if File.directory?(path)
      files(ext, path, list)
    else
      list << path if File.extname(path) =~ Regexp.new(ext, true)
    end
  end
  list
end