class Sysenv

Public Instance Methods

apply(hash, prefix=[]) click to toggle source

Override Project Specific Environment variables with system specific

Example:

>> sysenv = Sysenv.new
>> sysenv.parse({api:{secret:{key: 'value',cert:'certificate'}}})
=> {api:{secret:{key: 'value',cert:'certificate'}}}

Arguments:

apply: (Hash)

# File lib/sysenv/sysenv.rb, line 15
def apply(hash, prefix=[])
  envs = {} # hash of { underscorized env keys : normal env keys }
  ENV.keys.collect { |e| envs[ActiveSupport::Inflector.underscore(e)] = e }
  override_nested_hash(hash, envs, prefix)
end

override_nested_hash(hash, envs={}, prefix=[]) click to toggle source

# File lib/sysenv/sysenv.rb, line 21
def override_nested_hash(hash, envs={}, prefix=[])
  hash.each do |key, value|
    if value.class == Hash
      hash[key] = override_nested_hash(value, envs, prefix.clone << key)
    end
    exp_key = (prefix.clone << key).join('_')
    index = envs.keys.index(exp_key) || envs.keys.index(exp_key.to_sym)
    hash[key] = ENV[envs.values[index]] if index
  end
  hash
end