Module: Lightning::Util

Extends:

Lightning::Util

Defined in:

lib/lightning/util.rb

Instance Method Summary

• - (String) find_home Cross-platform way to determine a user’s home.
• - (Object) load_plugins(base_dir, sub_dir) Loads *.rb plugins in given directory and sub directory under it.
• - (Boolean) shell_command_exists?(command) Determines if a shell command exists by searching for it in ENV[‘PATH’].
• - (Hash) symbolize_keys(hash) Symbolizes keys of given hash.

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# File 'lib/lightning/util.rb', line 33

def find_home
  ['HOME', 'USERPROFILE'].each {|e| return ENV[e] if ENV[e] }
  return "#{ENV['HOMEDRIVE']}#{ENV['HOMEPATH']}" if ENV['HOMEDRIVE'] && ENV['HOMEPATH']
  File.expand_path("~")
rescue
  File::ALT_SEPARATOR ? "C:/" : "/"
end

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# File 'lib/lightning/util.rb', line 55

def load_plugins(base_dir, sub_dir)
  if File.exists?(dir = File.join(base_dir, sub_dir))
    plugin_type = sub_dir.sub(/s$/, '')
    Dir[dir + '/*.rb'].each {|file| load_plugin(file, plugin_type) }
  end
end

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# File 'lib/lightning/util.rb', line 42

def shell_command_exists?(command)
  (@path ||= ENV['PATH'].split(File::PATH_SEPARATOR)).
    any? {|d| File.exists? File.join(d, command) }
end

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# File 'lib/lightning/util.rb', line 48

def symbolize_keys(hash)
  hash.inject({}) do |h, (key, value)|
    h[key.to_sym] = value; h
  end
end